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c19618adc6fed2cd160b32a79e0eaa4879cb25e7
psxrecomp/runtime/src/main.cpp
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Alex Vanderveen c19618adc6 BIOS handling
2026-08-03 14:44:17 -04:00

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/* main.cpp — Phase 3 runtime entry point.
*
* Loads BIOS ROM, initializes CPU state + SDL display, calls into
* the recompiled reset vector. BIOS drives execution; SDL presents
* VRAM at each vblank via callback from gpu_vblank_tick().
*/
#include "cpu_state.h"
#include "psx_scheduler.h" /* psx_scheduler_run — deterministic TCB scheduler */
#include "parity_trace.h" /* general two-process control-flow parity ring */
#include "device_trace.h" /* general two-process device-event cycle ring */
#include "psx_interpreter.h"
#include "cdrom.h"
#include "fntrace.h"
#include "text_xlate.h"
#include "boot_state.h"
#include "bios_hle.h"
#include "psx_bios_backend.h"
#include "psx_cycles.h"
#include "starvation_ring.h"
#include "load_accel.h"
#include "savestate.h"
#include "overlay_capture.h"
#include "overlay_loader.h"
#include "autocompile.h"
#include "code_provider.h"
extern "C" void psx_event_step_conservative_env_init(void);
#include "overlay_backend.h"
#include "gpu.h"
#include "interrupts.h"
#include "present_ring.h"
#include "load_transition_ring.h"
#include "gpu_sw_renderer.h"
#include "gpu_render.h"
#include "gpu_gl_renderer.h"
#include "gpu_vk_renderer.h"
#include "frame_pacing.h"
#include "latency_ring.h"
#include "sio.h"
#ifndef PSX_MAX_PLAYERS
#define PSX_MAX_PLAYERS 2
#endif
#include "psx_netplay.h"
#include "psx_stick.h" /* radial SDL-stick -> DualShock response transform */
#include "psx_netplay_rb.h"
#include "psx_selfcheck.h"
#include "psx_lobby_client.h"
#include "spu.h"
#include "audio_trace.h"
#include "spu_shadow.h"
/* Shared clock-domain bridge: band-limited polyphase resampler + P-only DRC.
* The SPU renders at a fixed 44100/60 per wall-clock frame while the host
* consumes on its own crystal; with no resampling/DRC the queue slowly drifts
* to underrun (silence gaps). The bridge resamples ~1:1 with a <=+/-0.5% ratio
* trim to hold the ring near target -- no gaps. See recomp_audio_drc.h. */
#define RECOMP_AUDIO_DRC_IMPL
#include "recomp_audio_drc.h"
#include "memcard.h"
#include "debug_server.h"
#include "crash_trace.h"
#include "freeze_heartbeat.h"
#include "config_loader.h"
#include "game_options.h"
#include "crc32.h"
#include "disc_identity.h"
#include "iso_reader.h" /* text-image guard: extract the boot EXE from the disc */
#include "psx_keybinds.h" /* configurable keyboard->DualShock keybinds (keybinds.ini) */
#if defined(RECOMP_LAUNCHER)
#include "recomp_launcher.h" /* shared recomp-ui Dear ImGui launcher */
#include "launcher_profile.h" /* per-system variant profile (theme/caps bundle) */
#include "launcher_boot_timing.h" /* PSX_LAUNCHER_BOOT_TIMING stamps */
#if defined(PSX_HAS_GAME_CODEGEN)
extern "C" void psx_game_codegen_setup_apply(RecompLauncherCGameInfo* gi);
extern "C" void psx_game_codegen_relaunch_or_exit(const char* disc_path);
#endif
#endif
#include "psx_sdl.h"
#include "psx_sdl_audio.h"
#if defined(PSX_WEB)
#include <emscripten/emscripten.h>
#endif
#include <algorithm>
#include <atomic>
#include <thread>
#include <cctype>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <exception>
#include <array>
#include <filesystem>
#include <fstream>
#include <sstream>
#include <string>
#include <unordered_map>
#include <vector>
#ifdef _WIN32
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <winsock2.h>
#include <ws2tcpip.h>
#include <iphlpapi.h>
#include <windows.h>
#include <commdlg.h>
#else
#include <arpa/inet.h>
#include <fcntl.h>
#include <ifaddrs.h>
#include <netdb.h>
#include <net/if.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#endif
#ifndef PSX_DEFAULT_BIOS_PATH
/* Compile-time fallback name only — not an implicit player choice.
* Runtime default with no explicit pick is bios/openbios.bin (see
* resolve_bios_for_runtime / docs/BIOS_SELECTION.md). */
#define PSX_DEFAULT_BIOS_PATH "bios/SCPH1001.BIN"
#endif
#ifndef PSX_BUNDLED_BIOS_PATH
#define PSX_BUNDLED_BIOS_PATH "bios/openbios.bin"
#endif
#ifndef PSX_DEFAULT_GAME_CONFIG_PATH
#define PSX_DEFAULT_GAME_CONFIG_PATH ""
#endif
#ifndef PSX_WINDOW_TITLE
#define PSX_WINDOW_TITLE "psxrecomp"
#endif
#ifndef DEFAULT_DEBUG_PORT
#error DEFAULT_DEBUG_PORT must be defined by the runtime target.
#endif
extern "C" uint64_t gte_get_exec_count(void);
/* Cross-language globals defined in C translation units. Declared extern "C" at
* file scope so MSVC gives them C linkage (matching the C definitions); without
* this MSVC name-mangles the C++ references and they fail to link. GCC/Clang do
* not mangle namespace-scope variables, so this is a no-op there. The existing
* block-scope `extern` redeclarations inside functions inherit this C linkage. */
extern "C" {
extern uint64_t psx_cycle_count;
extern uint64_t s_frame_count;
extern uint32_t g_overlay_region_floor;
extern int g_psx_cps_mode;
extern uint64_t g_slice_fired, g_slice_irq_taken, g_dirty_ram_insns_run;
extern uint64_t g_dirty_window_dispatches;
extern uint32_t g_slice_exit_pc, g_slice_exit_reason, g_slice_exit_iter;
extern uint32_t g_slice_exit_dispatchable, g_slice_exit_dirty, g_slice_exit_in_text, g_slice_exit_want;
}
/* memory.c */
extern "C" void memory_init(const char* bios_path);
extern "C" void memory_set_sr_ptr(const uint32_t *p);
extern "C" uint32_t memory_get_bios_checksum(void);
extern "C" void dirty_ram_register_text_image(uint32_t phys_lo,
const uint8_t *bytes,
uint32_t len);
/* Arm the dirty-RAM text-image guard with the boot EXE bytes. The guard is
* load-bearing: dispatch native-safety (dirty_ram_text_native_ok) and the
* fntrace alternate game-start latch both key off the registered image, so
* every install must arm it — not just repo checkouts that happen to carry a
* loose EXE copy next to game.toml. Source order:
* 1. The local EXE file from game.toml (dev checkouts; recompiler input).
* 2. The boot EXE extracted from the mounted disc image (end-user installs
* — the disc is the same bytes the BIOS loads, i.e. the true reference).
* Registration passes ownership of the malloc'd buffer to memory.c. */
static void arm_text_image_guard(const std::string &exe_path,
uint32_t load_address,
const std::string &disc_path) {
const uint32_t phys_lo = load_address & 0x1FFFFFFFu;
/* 1. Local EXE file (skip the 2048-byte PS-X EXE header). */
if (!exe_path.empty()) {
std::ifstream ef(exe_path, std::ios::binary | std::ios::ate);
if (ef) {
std::streamsize sz = ef.tellg();
if (sz > 2048) {
uint32_t img_len = (uint32_t)(sz - 2048);
uint8_t *img = (uint8_t *)std::malloc(img_len);
if (img) {
ef.seekg(2048, std::ios::beg);
if (ef.read((char *)img, img_len)) {
dirty_ram_register_text_image(phys_lo, img, img_len);
std::fprintf(stdout,
"psxrecomp: text image guard armed (0x%08X..0x%08X, local EXE)\n",
load_address, load_address + img_len);
return;
}
std::free(img);
}
}
}
}
/* 2. Extract the boot EXE from the disc image. */
if (!disc_path.empty()) {
PS1::ISOReader iso;
if (iso.Open(disc_path)) {
/* The boot filename: basename of the game.toml exe field (it names
* the same file the recompiler consumed, which came off this disc);
* fall back to the SYSTEM.CNF BOOT token for configs whose local
* name differs from the disc name. */
std::string boot_name;
if (!exe_path.empty()) {
const size_t slash = exe_path.find_last_of("/\\");
boot_name = (slash == std::string::npos)
? exe_path : exe_path.substr(slash + 1);
}
PS1::ISOFileEntry ent;
if (boot_name.empty() || !iso.FindFile(boot_name, ent)) {
/* SYSTEM.CNF: `BOOT = cdrom:\SCUS_944.23;1` */
uint8_t cnf[2048] = {0};
size_t n = iso.ReadFile("SYSTEM.CNF", cnf, sizeof(cnf) - 1);
if (n > 0) {
std::string text((const char *)cnf, n);
std::string lower = text;
for (char &c : lower) c = (char)std::tolower((unsigned char)c);
const size_t key = lower.find("cdrom:");
if (key != std::string::npos) {
size_t j = key + 6;
while (j < text.size() && (text[j] == '\\' || text[j] == '/')) j++;
std::string tok;
while (j < text.size()) {
char c = text[j];
if (c == ';' || c == '\r' || c == '\n' || c == ' ' ||
c == '\t' || c == '\0') break;
tok += c; j++;
if (tok.size() > 64) break;
}
const size_t s2 = tok.find_last_of("\\/");
if (s2 != std::string::npos) tok = tok.substr(s2 + 1);
if (!tok.empty() && iso.FindFile(tok, ent)) boot_name = tok;
}
}
}
if (!boot_name.empty() && iso.FindFile(boot_name, ent) &&
ent.size > 2048) {
uint8_t *file = (uint8_t *)std::malloc(ent.size);
if (file) {
size_t got = iso.ReadFile(boot_name, file, ent.size);
if (got > 2048) {
uint32_t img_len = (uint32_t)(got - 2048);
uint8_t *img = (uint8_t *)std::malloc(img_len);
if (img) {
memcpy(img, file + 2048, img_len);
std::free(file);
dirty_ram_register_text_image(phys_lo, img, img_len);
std::fprintf(stdout,
"psxrecomp: text image guard armed (0x%08X..0x%08X, disc %s)\n",
load_address, load_address + img_len,
boot_name.c_str());
return;
}
}
std::free(file);
}
}
}
}
std::fprintf(stdout,
"psxrecomp: WARNING: text image guard NOT armed (no local EXE, no disc "
"boot EXE) — native text dispatch will be conservative\n");
}
/* dma.c */
extern "C" void dma_init(void);
/* mdec.c */
extern "C" void mdec_init(void);
extern "C" int mdec_recently_active(uint32_t within_frames);
/* timers.c */
extern "C" void timers_init(void);
/* interrupts.c */
extern "C" void interrupts_init(void);
#ifdef PSX_COSIM
extern "C" void cosim_init(void); /* first-divergence oracle server (cosim.c) */
#endif
extern "C" uint32_t psx_read_word(uint32_t addr);
extern "C" void psx_write_word(uint32_t addr, uint32_t val);
extern "C" uint16_t psx_read_half(uint32_t addr);
extern "C" void psx_write_half(uint32_t addr, uint16_t val);
extern "C" uint8_t psx_read_byte(uint32_t addr);
extern "C" void psx_write_byte(uint32_t addr, uint8_t val);
/* Guest-side data-read wrappers: same as psx_read_* but charge PS1 main-RAM
* read wait states (R3000A has no D-cache). Wired to cpu->read_* below so the
* timing applies to recompiled + interpreted guest loads, not debug/device reads. */
extern "C" uint32_t psx_guest_read_word(uint32_t addr);
extern "C" uint16_t psx_guest_read_half(uint32_t addr);
extern "C" uint8_t psx_guest_read_byte(uint32_t addr);
/* ---- SDL state ---- */
extern "C" {
SDL_Window* sdl_window = nullptr;
}
static SDL_Renderer* sdl_renderer;
static SDL_Texture* sdl_texture;
/* Per-player input device routing (PSX ports 1 & 2). Seeded from the
* [controller] settings the launcher writes; the runtime opens the matching
* SDL controller (or uses the keyboard) and feeds each PSX pad slot. */
struct PlayerInput {
int kind = 0; /* 0=none, 1=keyboard, 2=controller */
char guid[40] = {0}; /* SDL joystick GUID string when kind==controller */
/* Pad input mode (PSXRecompV4::PadMode): 0=hybrid (default), 1=analog,
* 2=digital. hybrid_analog is the per-frame auto-switch latch used only in
* hybrid mode: true => currently presenting DualShock (stick was the last
* input), false => currently presenting a digital pad (D-pad was last). */
int mode = PSXRecompV4::PAD_MODE_HYBRID;
bool hybrid_analog = false;
int deadzone = 3277; /* raw SDL axis units, ~10% default */
SDL_GameController* handle = nullptr;
SDL_JoystickID instance = -1;
};
static PlayerInput g_players[PSX_MAX_PLAYERS];
/* Offline SIO sample loop bound (from game.toml players; clamped). */
static int g_offline_pad_count = 2;
/* ARGB8888 staging buffer. Sized for the active internal resolution:
* 640*scale x 512*scale. Allocated once the supersampling scale is known
* (sized for the native 640x512 when supersampling is off). */
static uint32_t* sdl_pixel_buf = nullptr;
typedef void (*ModFrameHook)(void);
static std::vector<ModFrameHook>& mod_frame_hooks() {
static std::vector<ModFrameHook> hooks;
return hooks;
}
/* Statically linked mod code can register per-frame callbacks here. Hooks run
* after normal input sampling and before presentation/widescreen frame work. */
extern "C" void mod_register_frame_hook(ModFrameHook hook) {
if (hook) mod_frame_hooks().push_back(hook);
}
static void mod_call_frame_hooks() {
auto& hooks = mod_frame_hooks();
const size_t count = hooks.size();
for (size_t i = 0; i < count; i++) hooks[i]();
}
/* Presentation-only interpolation for software-rendered content that repeats
* each guest image for two vblanks. This never changes guest or audio timing. */
static std::atomic<int> g_smooth_60fps{0};
struct Smooth60State {
std::vector<uint32_t> previous_source;
uint64_t source_hash = 0;
uint32_t width = 0;
uint32_t height = 0;
bool have_source = false;
bool previous_was_duplicate = false;
bool announced = false;
};
static Smooth60State g_smooth_60_state;
/* Present-path session state — must reset on rematch (function-local statics
* survive soft-return and poison FMV/FPS after session_reboot). */
static bool s_disabled_frame_presented = false;
static bool s_force_present_after_load = false;
/* §33 SW hold-last: sdl_texture is 640x512; Live only uploads the active
* display rect. Resim must reuse that src/dst — RenderCopy(NULL,NULL) sticks
* the image in the upper-left corner (user-confirmed). */
static int s_sw_hold_valid = 0;
static SDL_Rect s_sw_hold_src;
static SDL_Rect s_sw_hold_dst;
/* After LOADED: optional freeze probe (PSX_POST_LOAD_PROBE=1). Off by default. */
static int s_post_load_probe_enabled = -1; /* -1 = unread env */
static int s_post_load_probe_left = 0;
static int s_post_load_probe_i = 0;
static uint64_t s_post_load_probe_gp00 = 0;
static uint64_t s_post_load_probe_skip_tot = 0;
static uint64_t s_post_load_probe_swap_tot = 0;
static uint64_t s_post_load_probe_dirty_tot = 0;
static uint64_t s_post_load_probe_gp0_tot = 0;
static uint64_t s_post_load_probe_vb_raise0 = 0;
static uint64_t s_post_load_probe_vb_deliv0 = 0;
static uint64_t s_post_load_probe_vb_ack0 = 0;
static uint64_t s_post_load_probe_dirty_blks0 = 0;
static uint64_t s_post_load_probe_chk_entry0 = 0;
static uint64_t s_post_load_probe_chk_fsr0 = 0;
static uint64_t s_post_load_probe_chk_fnone0 = 0;
static uint64_t s_post_load_probe_chk_mid0 = 0;
static uint64_t s_post_load_probe_chk_eval0 = 0;
static uint64_t s_post_load_probe_chk_deliv0 = 0;
static uint64_t s_post_load_probe_cyc0 = 0;
static uint64_t s_post_load_probe_ci_unit0 = 0;
static uint64_t s_post_load_probe_ci_supp0 = 0;
static uint64_t s_post_load_probe_ci_none0 = 0;
static uint64_t s_post_load_probe_ci_sr0 = 0;
static uint64_t s_post_load_probe_ci_deliv0 = 0;
static uint64_t s_post_load_probe_ci_enter0 = 0;
static uint64_t s_post_load_probe_adv_calls0 = 0;
static uint64_t s_post_load_probe_adv_sum0 = 0;
static uint64_t s_post_load_probe_svc0 = 0;
static uint64_t s_post_load_probe_dirty_insns0 = 0;
static uint64_t s_post_load_probe_dirty_pump0 = 0;
static uint64_t s_post_load_probe_stores0 = 0;
static uint64_t s_post_load_probe_idle_n0 = 0;
static uint64_t s_post_load_probe_idle_cyc0 = 0;
static uint64_t s_post_load_probe_hz_hits0 = 0;
static uint64_t s_post_load_probe_hz_cyc0 = 0;
static Uint64 s_post_load_probe_host_t0 = 0;
static int s_post_load_probe_stall_run = 0;
static int s_post_load_probe_in_stall = 0;
#define POST_LOAD_STALL_PC_CAP 8
static uint32_t s_stall_pc[POST_LOAD_STALL_PC_CAP];
static uint32_t s_stall_pc_n[POST_LOAD_STALL_PC_CAP];
static int s_stall_pc_used = 0;
#define POST_LOAD_LIVE_PC_CAP 8
static uint32_t s_live_pc[POST_LOAD_LIVE_PC_CAP];
static uint32_t s_live_pc_n[POST_LOAD_LIVE_PC_CAP];
static int s_live_pc_used = 0;
static int post_load_probe_env_on(void) {
if (s_post_load_probe_enabled < 0) {
const char *e = std::getenv("PSX_POST_LOAD_PROBE");
s_post_load_probe_enabled = (e && e[0] == '1') ? 1 : 0;
}
return s_post_load_probe_enabled;
}
static Uint64 s_fps_last_time = 0;
static uint64_t s_fps_last_frame = 0;
static std::string s_fps_base_title;
static FramePacer s_frame_pacer = { 0 };
static int s_turbo_present_skip = 0;
static int s_fmv_skip_present_skip = 0;
/* Netplay + depth24: present every other vblank (admit still every tick). */
static int s_netplay_depth24_present_skip = 0;
static uint32_t s_fmv_skip_last_mdec = 0;
static int s_fmv_skip_hold = 0;
/* MotK FMV cutover: after an idle gap, blank the first depth24+MDEC presents
* so one-frame RGB888 junk (stale VRAM) never reaches the window. */
static int s_d24_prev_mdec = 0;
static int s_d24_saw_gap = 0;
static int s_d24_cutover_blank = 0;
/* Savestate restore → audio pump: re-anchor last_cycles (declared early so
* psx_frontend_on_savestate_loaded can set it). */
static int g_audio_cycle_resync = 0;
static void smooth_60_reset(void) {
g_smooth_60_state.previous_source.clear();
g_smooth_60_state.source_hash = 0;
g_smooth_60_state.width = 0;
g_smooth_60_state.height = 0;
g_smooth_60_state.have_source = false;
g_smooth_60_state.previous_was_duplicate = false;
}
static void present_session_reset(void) {
s_disabled_frame_presented = false;
s_force_present_after_load = false;
s_sw_hold_valid = 0;
s_fps_last_time = 0;
s_fps_last_frame = 0;
s_fps_base_title.clear();
s_frame_pacer = FramePacer{ 0 };
s_turbo_present_skip = 0;
s_fmv_skip_present_skip = 0;
s_netplay_depth24_present_skip = 0;
s_fmv_skip_last_mdec = 0;
s_fmv_skip_hold = 0;
s_d24_prev_mdec = 0;
s_d24_saw_gap = 0;
s_d24_cutover_blank = 0;
/* Soft-exit can leave deferred present / flush reentrancy armed; gpu_init
* does not clear them. Rematch then no-ops every flush → black window. */
gpu_vblank_clear_deferred_present();
smooth_60_reset();
}
static void post_load_probe_stall_pc_note(uint32_t pc) {
if (!pc) return;
for (int i = 0; i < s_stall_pc_used; i++) {
if (s_stall_pc[i] == pc) {
if (s_stall_pc_n[i] < 0xffffffffu) s_stall_pc_n[i]++;
return;
}
}
if (s_stall_pc_used >= POST_LOAD_STALL_PC_CAP) return;
s_stall_pc[s_stall_pc_used] = pc;
s_stall_pc_n[s_stall_pc_used] = 1;
s_stall_pc_used++;
}
static void post_load_probe_stall_pc_dump(const char *why) {
if (s_stall_pc_used <= 0) return;
std::fprintf(stderr, "post_load_probe stall_pcs (%s):", why);
for (int i = 0; i < s_stall_pc_used; i++) {
std::fprintf(stderr, " 0x%08X×%u",
(unsigned)s_stall_pc[i], (unsigned)s_stall_pc_n[i]);
}
std::fprintf(stderr, "\n");
}
static void post_load_probe_live_pc_note(uint32_t pc) {
if (!pc) return;
for (int i = 0; i < s_live_pc_used; i++) {
if (s_live_pc[i] == pc) {
if (s_live_pc_n[i] < 0xffffffffu) s_live_pc_n[i]++;
return;
}
}
if (s_live_pc_used >= POST_LOAD_LIVE_PC_CAP) return;
s_live_pc[s_live_pc_used] = pc;
s_live_pc_n[s_live_pc_used] = 1;
s_live_pc_used++;
}
static void post_load_probe_live_pc_dump(const char *why) {
if (s_live_pc_used <= 0) return;
std::fprintf(stderr, "post_load_probe live_pcs (%s):", why);
for (int i = 0; i < s_live_pc_used; i++) {
std::fprintf(stderr, " 0x%08X×%u",
(unsigned)s_live_pc[i], (unsigned)s_live_pc_n[i]);
}
std::fprintf(stderr, "\n");
}
static void post_load_probe_arm(void) {
if (!post_load_probe_env_on()) {
s_post_load_probe_left = 0;
g_plp_cycle_diag = 0;
return;
}
extern uint64_t g_vblank_raise_count, g_vblank_deliver_count, g_vblank_ack_count;
extern uint64_t g_dirty_ram_blocks_run;
extern uint64_t g_dirty_ram_insns_run;
extern uint64_t g_dirty_pump_count;
extern uint64_t g_guest_store_count;
uint64_t e = 0, fsr = 0, fn = 0, mid = 0, ev = 0, id = 0;
psx_interrupt_check_path_diag(&e, &fsr, &fn, &mid, &ev, &id);
uint64_t ci_u = 0, ci_s = 0, ci_n = 0, ci_sr = 0, ci_d = 0, ci_e = 0;
overlay_loader_get_ci_skip_diag(&ci_u, &ci_s, &ci_n, &ci_sr, &ci_d, &ci_e);
uint64_t hz_h = 0, hz_c = 0;
psx_vsync_query_hle_horizon_totals(&hz_h, &hz_c);
g_plp_cycle_diag = 1;
g_plp_adv_calls = 0;
g_plp_adv_max_chunk = 0;
g_plp_adv_sum = 0;
g_plp_svc_calls = 0;
s_post_load_probe_left = 300;
s_post_load_probe_i = 0;
s_post_load_probe_gp00 = gpu_get_gp0_count();
s_post_load_probe_skip_tot = 0;
s_post_load_probe_swap_tot = 0;
s_post_load_probe_dirty_tot = 0;
s_post_load_probe_gp0_tot = 0;
s_post_load_probe_vb_raise0 = g_vblank_raise_count;
s_post_load_probe_vb_deliv0 = g_vblank_deliver_count;
s_post_load_probe_vb_ack0 = g_vblank_ack_count;
s_post_load_probe_dirty_blks0 = g_dirty_ram_blocks_run;
s_post_load_probe_chk_entry0 = e;
s_post_load_probe_chk_fsr0 = fsr;
s_post_load_probe_chk_fnone0 = fn;
s_post_load_probe_chk_mid0 = mid;
s_post_load_probe_chk_eval0 = ev;
s_post_load_probe_chk_deliv0 = id;
s_post_load_probe_cyc0 = psx_get_cycle_count();
s_post_load_probe_ci_unit0 = ci_u;
s_post_load_probe_ci_supp0 = ci_s;
s_post_load_probe_ci_none0 = ci_n;
s_post_load_probe_ci_sr0 = ci_sr;
s_post_load_probe_ci_deliv0 = ci_d;
s_post_load_probe_ci_enter0 = ci_e;
s_post_load_probe_adv_calls0 = 0;
s_post_load_probe_adv_sum0 = 0;
s_post_load_probe_svc0 = 0;
s_post_load_probe_dirty_insns0 = g_dirty_ram_insns_run;
s_post_load_probe_dirty_pump0 = g_dirty_pump_count;
s_post_load_probe_stores0 = g_guest_store_count;
s_post_load_probe_idle_n0 = g_idle_skip_count;
s_post_load_probe_idle_cyc0 = g_idle_skip_cycles;
s_post_load_probe_hz_hits0 = hz_h;
s_post_load_probe_hz_cyc0 = hz_c;
s_post_load_probe_host_t0 = SDL_GetPerformanceCounter();
s_post_load_probe_stall_run = 0;
s_post_load_probe_in_stall = 0;
s_stall_pc_used = 0;
s_live_pc_used = 0;
gl_renderer_present_probe_reset();
std::fprintf(stderr,
"savestate: post_load_probe armed (300 vblanks; "
"PSX_POST_LOAD_PROBE=1; live_pc/ci/adv diag on)\n");
}
static void post_load_probe_on_vblank(int turbo_active, int present_reached) {
if (s_post_load_probe_left <= 0) return;
s_post_load_probe_i++;
s_post_load_probe_left--;
uint64_t skip = 0, swap = 0, dirty_marks = 0;
int force_left = 0;
gl_renderer_present_probe_take(&skip, &swap, &dirty_marks, &force_left);
s_post_load_probe_skip_tot += skip;
s_post_load_probe_swap_tot += swap;
s_post_load_probe_dirty_tot += dirty_marks;
const uint64_t gp0_now = gpu_get_gp0_count();
const uint64_t gp0_delta = gp0_now - s_post_load_probe_gp00;
s_post_load_probe_gp00 = gp0_now;
s_post_load_probe_gp0_tot += gp0_delta;
extern uint64_t g_vblank_raise_count, g_vblank_deliver_count, g_vblank_ack_count;
extern uint64_t g_dirty_ram_blocks_run;
extern uint32_t i_stat, i_mask;
extern CPUState *debug_cpu_ptr;
const uint64_t vb_r = g_vblank_raise_count - s_post_load_probe_vb_raise0;
const uint64_t vb_d = g_vblank_deliver_count - s_post_load_probe_vb_deliv0;
const uint64_t vb_a = g_vblank_ack_count - s_post_load_probe_vb_ack0;
s_post_load_probe_vb_raise0 = g_vblank_raise_count;
s_post_load_probe_vb_deliv0 = g_vblank_deliver_count;
s_post_load_probe_vb_ack0 = g_vblank_ack_count;
const uint64_t dirty_blks = g_dirty_ram_blocks_run - s_post_load_probe_dirty_blks0;
s_post_load_probe_dirty_blks0 = g_dirty_ram_blocks_run;
uint32_t tcb = 0, gp_a = 0, gp_b = 0, gp_reg = 0;
uint32_t sr = 0, cause = 0;
int iec = 0, im2 = 0;
if (debug_cpu_ptr) {
gp_reg = debug_cpu_ptr->gpr[28];
tcb = psx_sched_current_tcb(debug_cpu_ptr);
sr = debug_cpu_ptr->cop0[12]; /* COP0 Status */
cause = debug_cpu_ptr->cop0[13]; /* COP0 Cause */
iec = (sr & 0x1u) ? 1 : 0;
im2 = (sr & (1u << 10)) ? 1 : 0;
/* func_8004FD14 frame-counter compare at 0x800501E8. */
if (debug_cpu_ptr->read_word) {
gp_a = debug_cpu_ptr->read_word(gp_reg + 2552u);
gp_b = debug_cpu_ptr->read_word(gp_reg + 2632u);
}
}
/* Hot-path check_interrupts attribution (not delivery_needed — that only
* samples at present time and was misleading). */
uint64_t chk_e = 0, chk_fsr = 0, chk_fn = 0, chk_mid = 0, chk_ev = 0, chk_id = 0;
psx_interrupt_check_path_diag(&chk_e, &chk_fsr, &chk_fn, &chk_mid, &chk_ev, &chk_id);
const uint64_t d_entry = chk_e - s_post_load_probe_chk_entry0;
const uint64_t d_fsr = chk_fsr - s_post_load_probe_chk_fsr0;
const uint64_t d_fnone = chk_fn - s_post_load_probe_chk_fnone0;
const uint64_t d_mid = chk_mid - s_post_load_probe_chk_mid0;
const uint64_t d_eval = chk_ev - s_post_load_probe_chk_eval0;
const uint64_t d_irqd = chk_id - s_post_load_probe_chk_deliv0;
s_post_load_probe_chk_entry0 = chk_e;
s_post_load_probe_chk_fsr0 = chk_fsr;
s_post_load_probe_chk_fnone0 = chk_fn;
s_post_load_probe_chk_mid0 = chk_mid;
s_post_load_probe_chk_eval0 = chk_ev;
s_post_load_probe_chk_deliv0 = chk_id;
const uint64_t cyc_now = psx_get_cycle_count();
const uint64_t d_cyc = cyc_now - s_post_load_probe_cyc0;
s_post_load_probe_cyc0 = cyc_now;
uint64_t ci_u = 0, ci_s = 0, ci_n = 0, ci_sr = 0, ci_d = 0, ci_e = 0;
overlay_loader_get_ci_skip_diag(&ci_u, &ci_s, &ci_n, &ci_sr, &ci_d, &ci_e);
const uint64_t d_ci_unit = ci_u - s_post_load_probe_ci_unit0;
const uint64_t d_ci_supp = ci_s - s_post_load_probe_ci_supp0;
const uint64_t d_ci_none = ci_n - s_post_load_probe_ci_none0;
const uint64_t d_ci_sr = ci_sr - s_post_load_probe_ci_sr0;
const uint64_t d_ci_deliv = ci_d - s_post_load_probe_ci_deliv0;
const uint64_t d_ci_enter = ci_e - s_post_load_probe_ci_enter0;
s_post_load_probe_ci_unit0 = ci_u;
s_post_load_probe_ci_supp0 = ci_s;
s_post_load_probe_ci_none0 = ci_n;
s_post_load_probe_ci_sr0 = ci_sr;
s_post_load_probe_ci_deliv0 = ci_d;
s_post_load_probe_ci_enter0 = ci_e;
const uint64_t adv_calls = g_plp_adv_calls;
const uint64_t adv_sum = g_plp_adv_sum;
const uint32_t adv_max = g_plp_adv_max_chunk;
const uint64_t svc_calls = g_plp_svc_calls;
const uint64_t d_adv_calls = adv_calls - s_post_load_probe_adv_calls0;
const uint64_t d_adv_sum = adv_sum - s_post_load_probe_adv_sum0;
const uint64_t d_svc = svc_calls - s_post_load_probe_svc0;
s_post_load_probe_adv_calls0 = adv_calls;
s_post_load_probe_adv_sum0 = adv_sum;
s_post_load_probe_svc0 = svc_calls;
g_plp_adv_max_chunk = 0; /* per-frame max */
extern uint64_t g_dirty_ram_insns_run;
extern uint64_t g_dirty_pump_count;
extern uint64_t g_guest_store_count;
const uint64_t d_dirty_insns = g_dirty_ram_insns_run - s_post_load_probe_dirty_insns0;
const uint64_t d_dirty_pump = g_dirty_pump_count - s_post_load_probe_dirty_pump0;
const uint64_t d_stores = g_guest_store_count - s_post_load_probe_stores0;
s_post_load_probe_dirty_insns0 = g_dirty_ram_insns_run;
s_post_load_probe_dirty_pump0 = g_dirty_pump_count;
s_post_load_probe_stores0 = g_guest_store_count;
const uint64_t d_idle_n = g_idle_skip_count - s_post_load_probe_idle_n0;
const uint64_t d_idle_cyc = g_idle_skip_cycles - s_post_load_probe_idle_cyc0;
s_post_load_probe_idle_n0 = g_idle_skip_count;
s_post_load_probe_idle_cyc0 = g_idle_skip_cycles;
uint64_t hz_h = 0, hz_c = 0;
psx_vsync_query_hle_horizon_totals(&hz_h, &hz_c);
const uint64_t d_hz_hits = hz_h - s_post_load_probe_hz_hits0;
const uint64_t d_hz_cyc = hz_c - s_post_load_probe_hz_cyc0;
s_post_load_probe_hz_hits0 = hz_h;
s_post_load_probe_hz_cyc0 = hz_c;
const Uint64 host_now = SDL_GetPerformanceCounter();
const Uint64 host_freq = SDL_GetPerformanceFrequency();
const double host_ms = (host_freq > 0)
? (1000.0 * (double)(host_now - s_post_load_probe_host_t0) /
(double)host_freq)
: 0.0;
s_post_load_probe_host_t0 = host_now;
GpuDisplayInfo di;
gpu_get_display_info(&di);
const int rect_dirty = (di.width > 0 && di.height > 0)
? gl_renderer_present_rect_dirty((int)di.display_x, (int)di.display_y,
(int)di.width, (int)di.height)
: 0;
CDROMDebugState cd;
cdrom_debug_snapshot(&cd);
const int cd_wait = cdrom_savestate_cd_wait_active();
const int boost_left = cdrom_savestate_boost_vblanks_remaining();
const int xa = cdrom_xa_stream_active();
const uint32_t irq_pc = psx_last_irq_check_pc();
const uint32_t resume_pc = psx_compiled_irq_resume_pc();
extern uint32_t g_debug_current_func_addr;
extern uint32_t g_debug_last_store_pc;
extern int g_psx_dispatch_depth;
const uint32_t func = g_debug_current_func_addr;
const uint32_t store_pc = g_debug_last_store_pc;
const uint32_t live_pc = debug_cpu_ptr ? debug_cpu_ptr->pc : 0u;
const uint32_t live_ra = debug_cpu_ptr ? debug_cpu_ptr->gpr[31] : 0u;
const int unit_depth = overlay_loader_call_unit_depth();
const int disp_depth = g_psx_dispatch_depth;
int cooldown_left = 0;
int in_exc = 0;
psx_get_freeze_diag(NULL, NULL, &in_exc, &cooldown_left, NULL, NULL);
const int stalled = (gp0_delta == 0);
if (stalled) {
s_post_load_probe_stall_run++;
s_post_load_probe_in_stall = 1;
post_load_probe_stall_pc_note(irq_pc ? irq_pc : resume_pc);
post_load_probe_stall_pc_note(func);
post_load_probe_live_pc_note(live_pc);
} else if (s_post_load_probe_in_stall) {
std::fprintf(stderr,
"post_load_probe STALL_END at #%d after %d vblanks "
"(irq_pc=0x%08X resume=0x%08X func=0x%08X "
"live=0x%08X ra=0x%08X unit=%d disp=%d)\n",
s_post_load_probe_i, s_post_load_probe_stall_run,
(unsigned)irq_pc, (unsigned)resume_pc, (unsigned)func,
(unsigned)live_pc, (unsigned)live_ra,
unit_depth, disp_depth);
post_load_probe_stall_pc_dump("end");
post_load_probe_live_pc_dump("end");
s_post_load_probe_in_stall = 0;
s_post_load_probe_stall_run = 0;
s_stall_pc_used = 0;
s_live_pc_used = 0;
}
/* Dense samples during soft-stall; otherwise first 32 + every 15. */
const int log_line =
stalled ||
(s_post_load_probe_i <= 32) ||
(s_post_load_probe_i % 15 == 0) ||
(s_post_load_probe_left == 0);
if (log_line) {
std::fprintf(stderr,
"post_load_probe #%d: live=0x%08X ra=0x%08X "
"irq_pc=0x%08X resume=0x%08X func=0x%08X "
"store=0x%08X idle=0x%08X unit=%d disp=%d turbo=%d reached=%d "
"swap=%llu skip=%llu dirty_marks=%llu force=%d rect_dirty=%d "
"fb=%ux%u@(%u,%u) dis=%d d24=%d gp0=%llu "
"cd(pend=%d cmd=0x%02X dly=%d read=%d rdly=%d xa=%d wait=%d boost=%d) "
"exc=%d cool=%d istat=0x%X imask=0x%X "
"vb(r=%llu d=%llu a=%llu) tcb=0x%08X "
"gp9f8=%d gpA48=%d dirty_blks=%llu dins=%llu dpump=%llu stores=%llu "
"sr=0x%08X iec=%d im2=%d cause=0x%08X cyc=%llu host_ms=%.2f "
"chk(e=%llu fsr=%llu fn=%llu mid=%llu eval=%llu irq=%llu) "
"ci(unit=%llu supp=%llu none=%llu sr=%llu deliv=%llu enter=%llu) "
"adv(n=%llu sum=%llu max=%u svc=%llu) "
"idle_skip(n=%llu cyc=%llu) hz(n=%llu cyc=%llu)\n",
s_post_load_probe_i,
(unsigned)live_pc, (unsigned)live_ra,
(unsigned)irq_pc, (unsigned)resume_pc, (unsigned)func,
(unsigned)store_pc, (unsigned)g_idle_skip_last_pc,
unit_depth, disp_depth,
turbo_active, present_reached,
(unsigned long long)swap, (unsigned long long)skip,
(unsigned long long)dirty_marks, force_left, rect_dirty,
(unsigned)di.width, (unsigned)di.height,
(unsigned)di.display_x, (unsigned)di.display_y,
di.disabled ? 1 : 0, di.depth24 ? 1 : 0,
(unsigned long long)gp0_delta,
cd.pending_pending, (unsigned)cd.pending_cmd, cd.pending_delay,
cd.reading, cd.read_delay, xa, cd_wait, boost_left,
in_exc, cooldown_left, (unsigned)i_stat, (unsigned)i_mask,
(unsigned long long)vb_r, (unsigned long long)vb_d,
(unsigned long long)vb_a, (unsigned)tcb,
(int)gp_a, (int)gp_b, (unsigned long long)dirty_blks,
(unsigned long long)d_dirty_insns, (unsigned long long)d_dirty_pump,
(unsigned long long)d_stores,
(unsigned)sr, iec, im2, (unsigned)cause,
(unsigned long long)d_cyc, host_ms,
(unsigned long long)d_entry, (unsigned long long)d_fsr,
(unsigned long long)d_fnone, (unsigned long long)d_mid,
(unsigned long long)d_eval, (unsigned long long)d_irqd,
(unsigned long long)d_ci_unit, (unsigned long long)d_ci_supp,
(unsigned long long)d_ci_none, (unsigned long long)d_ci_sr,
(unsigned long long)d_ci_deliv, (unsigned long long)d_ci_enter,
(unsigned long long)d_adv_calls, (unsigned long long)d_adv_sum,
(unsigned)adv_max, (unsigned long long)d_svc,
(unsigned long long)d_idle_n, (unsigned long long)d_idle_cyc,
(unsigned long long)d_hz_hits, (unsigned long long)d_hz_cyc);
}
if (s_post_load_probe_left == 0) {
if (s_post_load_probe_in_stall) {
post_load_probe_stall_pc_dump("done-still-stalled");
post_load_probe_live_pc_dump("done-still-stalled");
}
g_plp_cycle_diag = 0;
std::fprintf(stderr,
"post_load_probe DONE: n=%d swap_tot=%llu skip_tot=%llu "
"dirty_tot=%llu gp0_tot=%llu\n",
s_post_load_probe_i,
(unsigned long long)s_post_load_probe_swap_tot,
(unsigned long long)s_post_load_probe_skip_tot,
(unsigned long long)s_post_load_probe_dirty_tot,
(unsigned long long)s_post_load_probe_gp0_tot);
}
}
/* Called from savestate_poll after a successful restore (before scheduler
* longjmp). Clears present latches and forces the next vblank to show the
* restored VRAM — including a blank if display was disabled in the snapshot. */
extern "C" void psx_frontend_on_savestate_loaded(void) {
s_disabled_frame_presented = false;
s_force_present_after_load = true;
smooth_60_reset();
/* Re-anchor wall pacing + FPS baseline: admit may have blocked for seconds
* in the load barrier with next_deadline in the past. */
s_frame_pacer = FramePacer{ 0 };
s_fps_last_time = 0;
s_fps_last_frame = 0;
/* Re-anchor guest-cycle→sample budgeting (pump clears queued PCM too). */
g_audio_cycle_resync = 1;
/* Depth24 FMV: drop ephemeral present hold/cutover so restored VRAM shows.
* Upload span came back with the GPU snap; treat MDEC as already active if
* depth24 is on so we don't full-black the first post-load presents. */
gpu_depth24_on_savestate_loaded();
s_d24_cutover_blank = 0;
s_d24_saw_gap = 0;
s_d24_prev_mdec = gpu_display_is_depth24() ? 1 : 0;
/* Depth24 load skipped framebuffer-sized CPU→GPU uploads — including the
* full-VRAM boot_state blit — so restage the mirror into the FBO/image
* before present. Otherwise post-FMV menus miss texture pages. Safe
* no-ops when that backend was never brought up. */
gl_renderer_restage_vram_after_savestate();
vk_renderer_restage_vram_after_savestate();
/* GL present-dirty early-out can skip SwapWindow when the restored frame
* matches the last swap (typical on 2nd+ load of the same slot). Invalidate
* tiles + force several swaps so the window actually updates. Safe no-op
* when the GL pipeline was never brought up. */
gl_renderer_invalidate_present();
post_load_probe_arm();
}
/* Rollback snap apply / realign — keep depth24 hold clear + restage. Full
* savestate present thrash (post_load_probe) stays disk-only. When the tip
* is already in FMV/media, mirror the disk cutover reset so resume into
* FMV entry does not treat the tip as a fresh gap (permanent black blank). */
extern "C" void psx_frontend_on_rb_snap_loaded(void) {
const int media = gpu_display_is_depth24() || mdec_recently_active(8) ||
cdrom_fmv_stream_pending() || cdrom_xa_stream_active();
g_audio_cycle_resync = 1;
gpu_depth24_on_savestate_loaded();
s_d24_cutover_blank = 0;
if (media) {
s_d24_saw_gap = 0;
s_d24_prev_mdec = (gpu_display_is_depth24() || mdec_recently_active(8)) ? 1 : 0;
s_disabled_frame_presented = false;
s_force_present_after_load = true;
}
gl_renderer_restage_vram_after_savestate();
vk_renderer_restage_vram_after_savestate();
/* Dual-raster: restaged FBO must reach the window; drop hold-last. */
gl_renderer_invalidate_present();
/* §63: guest SIO came from the snap — drop Live pad-edge trackers. */
psx_netplay_on_rb_snap_loaded();
}
static uint64_t smooth_60_frame_hash(const uint32_t* pixels, size_t count) {
uint64_t hash = 1469598103934665603ull;
const size_t step = std::max<size_t>(1, count / 4096u);
for (size_t i = 0; i < count; i += step) {
hash ^= pixels[i];
hash *= 1099511628211ull;
}
hash ^= count;
return hash * 1099511628211ull;
}
static bool smooth_60_scene_cut(const uint32_t* current,
const uint32_t* previous,
size_t count) {
const size_t step = std::max<size_t>(1, count / 4096u);
uint64_t difference = 0;
size_t samples = 0;
size_t large_changes = 0;
for (size_t i = 0; i < count; i += step) {
const uint32_t a = current[i];
const uint32_t b = previous[i];
const unsigned dr = (unsigned)std::abs((int)((a >> 16) & 0xFFu) -
(int)((b >> 16) & 0xFFu));
const unsigned dg = (unsigned)std::abs((int)((a >> 8) & 0xFFu) -
(int)((b >> 8) & 0xFFu));
const unsigned db = (unsigned)std::abs((int)(a & 0xFFu) -
(int)(b & 0xFFu));
const unsigned pixel_difference = dr + dg + db;
difference += pixel_difference;
if (pixel_difference > 320u) large_changes++;
samples++;
}
return samples && large_changes * 4u > samples * 3u &&
difference > (uint64_t)samples * 360u;
}
static void smooth_60_present(uint32_t* pixels, uint32_t width, uint32_t height,
bool eligible) {
if (!eligible || !pixels || !g_smooth_60fps.load(std::memory_order_acquire)) {
if (g_smooth_60_state.have_source) smooth_60_reset();
return;
}
Smooth60State& state = g_smooth_60_state;
const size_t count = (size_t)width * height;
if (!count) { smooth_60_reset(); return; }
const uint64_t hash = smooth_60_frame_hash(pixels, count);
if (!state.have_source || state.width != width || state.height != height) {
state.previous_source.assign(pixels, pixels + count);
state.source_hash = hash;
state.width = width;
state.height = height;
state.have_source = true;
state.previous_was_duplicate = false;
return;
}
const bool duplicate = hash == state.source_hash &&
std::memcmp(pixels, state.previous_source.data(), count * sizeof(uint32_t)) == 0;
if (duplicate) { state.previous_was_duplicate = true; return; }
const bool interpolate = state.previous_was_duplicate &&
!smooth_60_scene_cut(pixels, state.previous_source.data(), count);
state.previous_was_duplicate = false;
state.source_hash = hash;
if (!interpolate) {
std::copy(pixels, pixels + count, state.previous_source.begin());
return;
}
if (!state.announced) {
std::fprintf(stdout,
"psxrecomp: 60 FPS smoothing active (guest timing preserved)\n");
state.announced = true;
}
for (size_t i = 0; i < count; i++) {
const uint32_t current = pixels[i];
const uint32_t previous = state.previous_source[i];
state.previous_source[i] = current;
pixels[i] = 0xFF000000u |
(((current & 0x00FEFEFEu) >> 1) + ((previous & 0x00FEFEFEu) >> 1));
}
}
extern "C" void psx_smooth_60fps_set(int enabled) {
g_smooth_60fps.store(enabled ? 1 : 0, std::memory_order_release);
}
#if defined(PSX_WEB)
extern "C" EMSCRIPTEN_KEEPALIVE void psx_web_set_smooth_60fps(int enabled) {
psx_smooth_60fps_set(enabled);
}
#endif
/* [video] options, resolved from the game config (defaults: native + AA). */
static int g_video_scale = 1; /* internal-resolution SSAA factor */
static bool g_video_aa = true; /* linear present filtering */
static int g_video_texfilter = 0; /* 0=nearest, 1=bilinear */
static int g_video_renderer = PSXRecompV4::DEFAULT_VIDEO_RENDERER;
static int g_fullscreen = 0; /* tri-state: 0 windowed, 1 borderless (desktop)
* fullscreen, 2 exclusive fullscreen */
static int g_video_screen = 0; /* 0=raw,1=crt,2=composite,3=trinitron */
static int g_video_win_w = 1280; /* window width (height follows aspect) */
static bool g_audio_spu_hq = false; /* SPU float-shadow (env overrides) */
static int g_auto_skip_fmv = 0; /* skip FMVs the instant they're detected */
static int g_headless = 0; /* debug/CI frontend: no SDL window/audio */
/* FMV instant-skip via the game's OWN end-of-movie path. Tomba's MDEC player
* (FUN_8001efe8) tears a movie down when the streamed frame number reaches that
* movie's per-movie total minus 3; writing the current movie's total down to
* g_fmv_skip_end_total makes the player end it on the next frame — a natural end
* that reaches EVERY movie. g_fmv_skip_total_table = base of the per-movie u16
* total table; g_fmv_skip_movie_id = guest addr of the current-movie-id byte.
* 0 table => fall back to START injection. See [video] fmv_skip_* in game.toml. */
static uint32_t g_fmv_skip_total_table = 0;
static uint32_t g_fmv_skip_movie_id = 0;
static int g_fmv_skip_end_total = 3;
/* fmv_skip_no_xa: detect FMVs on MDEC activity alone (silent RAM-preloaded
* movies never stream XA, so the default MDEC+XA detector misses them —
* Tomba2's Whoopee Camp logo). Presentation-side fast-forward only. */
static int g_fmv_skip_no_xa = 0;
static int g_fmv_skip_no_xa_hold = 4;
/* Low-latency present options (see [video] in config_loader). Measured on a
* 60Hz box the dominant input->photon cost is NOT vsync at the swap (that
* blocks ~tens of us) but that input is sampled ~one pacer-wait (~13.6ms)
* before the frame the CPU then renders from it. g_low_latency_input re-samples
* the pad AFTER the wall-clock pacer (just before present) so the next CPU frame
* reads near-fresh input. g_video_vsync controls the GL swap interval
* (1=vsync/tear-free, 0=immediate/lowest display latency+tearing, -1=adaptive);
* it trims the display-side scanout latency the CPU-side ring can't see. */
static int g_low_latency_input = 1;
static int g_video_vsync = 1;
static int g_frame_interpolation = 0;
static int g_frame_interpolation_fps = 0;
static double g_host_refresh_hz = 0.0;
/* Map the configured tri-state fullscreen mode (g_fullscreen) to the SDL
* window-fullscreen flag: used both to open the window in that mode and to
* pick the hotkey's fullscreen target. */
static Uint32 psx_fullscreen_flag_for_mode(int mode) {
if (mode == 2) return SDL_WINDOW_FULLSCREEN; /* exclusive */
if (mode == 1) return SDL_WINDOW_FULLSCREEN_DESKTOP; /* borderless */
return 0; /* windowed */
}
/* FMV auto-skip detection hooks (cdrom.c / mdec.c). */
extern "C" int cdrom_xa_stream_active(void);
extern "C" uint32_t mdec_get_decode_count(void);
/* Debug observability: expose the RESOLVED FMV-skip + config state so the TCP
* debug server can report the runtime truth (which game.toml path actually loaded,
* and what auto_skip_fmv / the frame-count-table params resolved to) instead of us
* inferring it from the .toml on disk. Set once in main() after the config path is
* resolved. */
const char *g_active_config_path = nullptr;
extern "C" void debug_get_fmv_config(int *auto_skip, uint32_t *total_table,
uint32_t *movie_id, int *no_xa_hold,
const char **cfg_path) {
if (auto_skip) *auto_skip = g_auto_skip_fmv;
if (total_table) *total_table = g_fmv_skip_total_table;
if (movie_id) *movie_id = g_fmv_skip_movie_id;
if (no_xa_hold) *no_xa_hold = g_fmv_skip_no_xa_hold;
if (cfg_path) *cfg_path = g_active_config_path ? g_active_config_path : "(null)";
}
/* Display aspect W:H (default 4:3 = native). Wider aspects enable the
* widescreen hack: GTE X-squash + stretched present (see [video] aspect_ratio
* in config_loader.h). */
static int g_video_aspect_num = 4;
static int g_video_aspect_den = 3;
/* [widescreen] per-game hooks (see config_loader.h): anchor scratch addr for
* tagged sprite prims + HUD SPRT center-squash. Inert at 0/false. */
static uint32_t g_ws_anchor_addr = 0;
static bool g_ws_hud_sprt = false;
/* Runtime-only transition cleanup; kept out of gpu.h because generated game
* units include that ABI header and do not need this frontend-only setter. */
extern "C" void gpu_ws_set_clear_reveal(int on);
extern "C" void gpu_ws_set_nw_textured_edges(int on, int scale_pct);
extern "C" void gpu_ws_set_signed_x_bound_sites(const uint32_t*, const uint32_t*, int);
/* Widescreen engages at game entry (fntrace_is_game_started): the BIOS boot
* — Sony logo, PS logo, shell — presents authentic 4:3 with no GTE squash.
* Starts true when the configured aspect is already 4:3 (nothing to engage). */
static bool g_ws_engaged = true;
/* Wide-aspect strategy: native-wide (render the wider FOV into a wider frame,
* present 1:1 — the GTE is NOT squashed) vs. the legacy squash hack. Default
* native-wide; toggle live via the ws_nw TCP command for A/B comparison. */
static int g_ws_native_wide = 1;
/* Logical present width for the SDL_Renderer (software) path; 640*scale at
* 4:3, wider for wide aspects. Height is always 480*scale. Set at window
* creation alongside SDL_RenderSetLogicalSize. */
static int g_logical_w = 640;
/* Clamp a requested window width to the primary display's usable area so an
* oversized choice (e.g. 1920 on a 1080p panel) still fits on screen. Keeps
* the given aspect: height = width*den/num. */
static void clamp_window_aspect(int* w, int* h, int num, int den) {
int width = *w;
if (width < 640) width = 640;
SDL_Rect bounds;
if (SDL_GetDisplayUsableBounds(0, &bounds) == 0 && bounds.w > 0 && bounds.h > 0) {
if (width > bounds.w) width = bounds.w;
if (width * den / num > bounds.h) width = bounds.h * num / den;
}
*w = width;
*h = width * den / num;
}
/* SDL GL attributes are global inputs to the next context creation. Set the
* runtime requirements immediately before every GL window, because launcher
* teardown resets them and macOS otherwise supplies a legacy 2.1 context. */
static void configure_core_gl_context_attributes() {
SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
SDL_GL_SetAttribute(SDL_GL_STENCIL_SIZE, 8);
}
/* Live native-wide vs squash toggle (ws_nw TCP command) for A/B comparison.
* Re-engages with the chosen mode in place if widescreen is already running. */
extern "C" void psx_ws_set_native_wide(int on) {
g_ws_native_wide = on ? 1 : 0;
if (g_ws_engaged && g_video_aspect_num * 3 != g_video_aspect_den * 4) {
int mode = g_ws_native_wide ? 2 : 1;
gte_set_display_aspect(mode == 1 ? g_video_aspect_num : 4,
mode == 1 ? g_video_aspect_den : 3);
gpu_ws_configure(g_video_aspect_num, g_video_aspect_den,
g_ws_anchor_addr, g_ws_hud_sprt ? 1 : 0, mode);
}
}
extern "C" int psx_ws_get_native_wide(void) { return g_ws_native_wide; }
static bool g_gl_active = false; /* GL context live -> GL present path */
static bool g_vk_active = false; /* Vulkan context live -> VK present path */
/* Present straight from the FBO (fast, no readback). Set PSX_GL_FORCE_CPU_PRESENT=1
* to force the software readout path instead — a diagnostic/fallback that also
* keeps CPU VRAM current every frame (so screenshots reflect the screen). */
static int g_gl_fbo_present = 1;
/* Cleared on lobby soft-return so rematch can re-arm CPU-auth GPU lock. */
static int s_netplay_sw_gpu_locked;
/* Netplay + user OpenGL: dual-raster (SW@1× authority + GL@Nx present) or
* fallback SW-only + CPU→GL present when dual could not arm. */
static int s_netplay_gl_present;
/* Netplay SW-only path: sim at scale 1 (no SW SSAA hi-res mirror).
* Dual-raster OpenGL uses g_video_scale for the hr FBO; SW stays 1 via
* glb_set_scale. Cleared on lobby soft-return. */
static int s_netplay_sim_native_scale;
/* True while netplay owns the GPU path: CPU VRAM is digest/snap authority. */
static int netplay_cpu_auth_gpu(void) {
return s_netplay_sw_gpu_locked || s_netplay_gl_present ||
s_netplay_sim_native_scale;
}
/* Dual-raster present quality: GL FBO at settings SSAA, SW@1× for snaps. */
static int netplay_gl_dual_quality(void) {
#ifndef PSX_SDL_NO_RENDER
return s_netplay_gl_present && g_gl_active && g_gl_fbo_present &&
gl_renderer_cpu_auth_dual();
#else
return 0;
#endif
}
#ifndef PSX_SDL_NO_RENDER
/* Create SDL_Renderer + streaming texture for software present. Used when
* netplay runs without a live GL context (software renderer selected, or GL
* init failed). CPU-auth + OpenGL present does not need this. */
static int ensure_sw_sdl_present(void) {
if (!sdl_window)
return -1;
if (!sdl_renderer) {
#ifdef _WIN32
SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengl");
#endif
Uint32 rflags = SDL_RENDERER_ACCELERATED |
(g_video_vsync != 0 ? SDL_RENDERER_PRESENTVSYNC : 0u);
sdl_renderer = SDL_CreateRenderer(sdl_window, -1, rflags);
if (!sdl_renderer)
sdl_renderer = SDL_CreateRenderer(sdl_window, -1, SDL_RENDERER_ACCELERATED);
if (!sdl_renderer) {
std::fprintf(stderr,
"psxrecomp: netplay SW present: SDL_CreateRenderer failed: %s\n",
SDL_GetError());
return -1;
}
/* Netplay CPU-auth: size logical/texture at 1× (sim has no hi-res
* mirror). Offline SSAA preference stays in g_video_scale. */
const int tex_scale = netplay_cpu_auth_gpu() ? 1 : g_video_scale;
g_logical_w = 480 * g_video_aspect_num * tex_scale / g_video_aspect_den;
if (g_logical_w < 1) g_logical_w = 640;
SDL_RenderSetLogicalSize(sdl_renderer, g_logical_w, 480 * tex_scale);
}
if (!sdl_texture) {
const int tex_scale = netplay_cpu_auth_gpu() ? 1 : g_video_scale;
sdl_texture = SDL_CreateTexture(
sdl_renderer,
SDL_PIXELFORMAT_ARGB8888,
SDL_TEXTUREACCESS_STREAMING,
640 * tex_scale, 512 * tex_scale);
if (!sdl_texture) {
std::fprintf(stderr,
"psxrecomp: netplay SW present: SDL_CreateTexture failed: %s\n",
SDL_GetError());
return -1;
}
SDL_SetTextureScaleMode(sdl_texture,
g_video_aa ? SDL_ScaleModeLinear : SDL_ScaleModeNearest);
}
if (!sdl_pixel_buf) {
const int tex_scale = netplay_cpu_auth_gpu() ? 1 : g_video_scale;
sdl_pixel_buf = (uint32_t*)std::malloc(
(size_t)640 * tex_scale * 512 * tex_scale * sizeof(uint32_t));
if (!sdl_pixel_buf) {
std::fprintf(stderr, "psxrecomp: netplay SW present: staging alloc failed\n");
return -1;
}
}
return 0;
}
#endif
/* Rollback/delay netplay: guest VRAM must be CPU-authoritative. Prefer
* dual-raster OpenGL: SW@1× writes snaps/digests/GPUREAD; GL@settings-scale
* hr FBO is present-only (g_gl_fbo_present=1, never glReadPixels). Fallback
* when no GL context: pure software SDL present at scale 1. */
extern "C" void psx_frontend_netplay_force_sw_gpu(void) {
#ifndef PSX_SDL_NO_RENDER
/* Already locked on dual-raster GL quality present. */
if (s_netplay_sw_gpu_locked && netplay_gl_dual_quality()) {
int want = g_video_scale < 1 ? 1 : g_video_scale;
if (want > SW_MAX_INTERNAL_SCALE) want = SW_MAX_INTERNAL_SCALE;
gr_set_backend(GR_BACKEND_OPENGL);
gl_renderer_set_cpu_auth_dual(1);
/* FBO scale is fixed at context init — keep request in sync. */
gr_set_scale(want);
s_netplay_sim_native_scale = 1;
return;
}
/* Already locked on legacy CPU→GL present (no dual). */
if (s_netplay_sw_gpu_locked && g_gl_active && !g_gl_fbo_present) {
gr_set_scale(1);
s_netplay_sim_native_scale = 1;
return;
}
/* Already locked on pure software SDL present. */
if (s_netplay_sw_gpu_locked && !g_gl_active && !g_vk_active &&
sdl_renderer && sdl_texture && sdl_pixel_buf) {
gr_set_scale(1);
s_netplay_sim_native_scale = 1;
return;
}
#endif
#ifndef PSX_SDL_NO_RENDER
/* If we were on FBO-auth GL (offline), pull VRAM to CPU once before
* arming dual. Caller must invoke this before g_np.active (ensure_cpu
* no-ops while netplay is active). */
if (g_gl_active && gr_backend() == GR_BACKEND_OPENGL &&
!gl_renderer_cpu_auth_dual())
gl_renderer_sync_cpu();
if (g_vk_active) {
/* Vulkan CPU-auth present not wired yet — tear down to SW SDL. */
vk_renderer_sync_cpu();
vk_renderer_shutdown();
g_vk_active = false;
s_netplay_gl_present = 0;
}
#endif
#ifndef PSX_SDL_NO_RENDER
if (g_gl_active) {
/* Dual-raster: OPENGL backend, SW@1× + GPU@Nx, FBO present. */
int want = g_video_scale < 1 ? 1 : g_video_scale;
if (want > SW_MAX_INTERNAL_SCALE) want = SW_MAX_INTERNAL_SCALE;
gr_set_backend(GR_BACKEND_OPENGL);
gl_renderer_set_cpu_auth_dual(1);
gr_set_scale(want);
g_gl_fbo_present = true;
s_netplay_gl_present = 1;
s_netplay_sim_native_scale = 1;
gl_renderer_restage_vram_after_savestate();
gl_renderer_invalidate_present();
s_netplay_sw_gpu_locked = 1;
latency_ring_set_backend("opengl");
fprintf(stderr,
"psxrecomp: netplay dual-raster "
"(SW@1x CPU-auth + OpenGL@%dx present; no FBO readback)\n",
want);
fflush(stderr);
return;
}
/* Software present (user picked software, GL init failed, or Vulkan).
* Do not clear g_video_renderer — that preference must survive rematch /
* first settings.toml write so OpenGL stays the user's default. */
g_gl_fbo_present = false;
gl_renderer_set_cpu_auth_dual(0);
gr_set_backend(GR_BACKEND_SOFTWARE);
gr_set_scale(1);
s_netplay_sim_native_scale = 1;
s_netplay_gl_present = 0;
if (ensure_sw_sdl_present() != 0) {
s_netplay_sw_gpu_locked = 0;
std::fprintf(stderr,
"psxrecomp: netplay SW GPU forced but present path failed "
"(expect black/empty window — will retry)\n");
fflush(stderr);
return;
}
s_netplay_sw_gpu_locked = 1;
#else
gr_set_backend(GR_BACKEND_SOFTWARE);
gr_set_scale(1);
s_netplay_sim_native_scale = 1;
s_netplay_sw_gpu_locked = 1;
#endif
latency_ring_set_backend("software");
fprintf(stderr,
"psxrecomp: netplay software GPU "
"(CPU-authoritative VRAM; sim scale 1)\n");
fflush(stderr);
}
/* Vsync self-heal state (see SDL_RenderPresent wrapper in
* sdl_vblank_present). C linkage: freeze_heartbeat.c includes both in
* the freeze dump so a slow-frames wedge can be attributed to driver
* present backpressure from the dump alone. */
extern "C" {
uint32_t g_present_slow_count = 0; /* presents that blocked >250ms */
int g_present_vsync_disabled = 0; /* 1 once self-heal tripped */
}
/* Turbo-through-loads (step 4). C linkage: debug_server.c reads/toggles the
* enable and reports the frame counter. Enabled by game.toml [runtime]
* turbo_loads (opt-in per game) or the turbo_loads TCP command. */
extern "C" {
int g_turbo_loads_enabled = 0;
uint64_t g_turbo_loads_frames = 0; /* vblanks run unpaced (observability) */
int g_turbo_audio_sink_enabled = 0;
int g_turbo_audio_sink_active = 0;
uint64_t g_turbo_audio_sink_frames = 0; /* guest SPU frames advanced, not queued */
}
/* The CD predicate already excludes XA and holds across ordinary inter-file
* gaps. A short engage debounce rejects a one-frame controller blip without
* leaving a visible authentic-paced prefix on every real load. Once engaged,
* a symmetric release debounce rides through tiny late-sector/IRQ gaps. This
* changes host presentation/pacing only; guest cycles and input sampling keep
* advancing normally. */
#define TURBO_LOADS_ENGAGE_FRAMES 4
#define TURBO_LOADS_RELEASE_FRAMES 6
static SDL_AudioDeviceID sdl_audio_device;
static int16_t sdl_audio_buf[2048 * 2];
/* DRC bridge. Producer (sdl_audio_pump) runs on the main loop thread under
* SDL_LockAudioDevice; consumer (sdl_drc_callback) runs on the SDL audio
* thread. */
static rab_bridge s_drc;
static bool s_drc_ready = false;
/* Observability + A/B. PSXRECOMP_AUDIO_LEGACY=1 keeps the historical push model
* (SDL_QueueAudio, no bridge) so the underrun baseline can be measured against
* the bridge from a single build; default (unset) = bridge/pull model. Output
* health is surfaced through the audio_stats TCP command (no stderr probe). */
static bool audio_legacy_mode(void) {
static int v = -1;
if (v < 0) { const char* e = getenv("PSXRECOMP_AUDIO_LEGACY"); v = (e && *e && *e != '0') ? 1 : 0; }
return v != 0;
}
/* Legacy-mode underrun counter: incremented when the SDL queue is found empty
* at pump time (the device was silence-filling = an audible gap). */
static uint64_t g_legacy_underruns = 0;
/* Set at unmute so the pump resyncs its bridge-underrun baseline past the
* intentional mute-drain instead of reporting it as gaps. */
int g_audio_unmute_resync = 0;
/* Actual device rate the host opened at (bridge mode may differ from 44100;
* the T3 tap ring runs at this rate and its WAV dump must say so). */
extern "C" {
int g_audio_host_rate = 44100;
}
static void sdl_drc_callback(void* /*user*/, Uint8* stream, int len) {
if (!s_drc_ready) { std::memset(stream, 0, (size_t)len); return; }
int frames = len / (int)(2 * sizeof(int16_t)); /* stereo S16 */
rab_pull(&s_drc, reinterpret_cast<int16_t*>(stream), frames);
/* T3 tap in bridge mode: the exact device-rate bytes the host consumes.
* This callback is the tap's single writer while the bridge is active. */
audio_trace_pcm(AUDIO_TAP_HOST, reinterpret_cast<const int16_t*>(stream),
frames);
}
static std::filesystem::path find_upward(std::filesystem::path start,
const std::filesystem::path& marker) {
std::error_code ec;
start = std::filesystem::absolute(start, ec);
if (ec) start = std::filesystem::current_path();
if (!std::filesystem::is_directory(start, ec)) start = start.parent_path();
for (;;) {
if (std::filesystem::exists(start / marker, ec)) return start;
if (!start.has_parent_path() || start.parent_path() == start) break;
start = start.parent_path();
}
return {};
}
// The directory the running executable lives in — the SINGLE anchor for every
// runtime file (game.toml, disc, BIOS, settings.toml, caches, memcards, sidecar
// .cfg). Deliberately NEVER the current working directory: a game must launch
// identically whether started from its own folder, a shortcut, a shell in some
// other directory, or a debugger. On Windows GetModuleFileNameW is the
// authoritative source (independent of argv[0], which can be relative/bare and
// would otherwise get resolved against cwd by fs::absolute). $APPIMAGE and
// argv[0] are non-Windows / fallback sources only.
static std::filesystem::path exe_dir_from_argv(const char* argv0) {
namespace fs = std::filesystem;
std::error_code ec;
fs::path exe_dir;
#ifdef _WIN32
// Authoritative: the real image path, regardless of how we were invoked.
{
wchar_t buf[MAX_PATH * 4];
DWORD n = GetModuleFileNameW(NULL, buf, (DWORD)(sizeof(buf) / sizeof(buf[0])));
if (n > 0 && n < (DWORD)(sizeof(buf) / sizeof(buf[0]))) {
exe_dir = fs::path(std::wstring(buf, buf + n)).parent_path();
}
}
#endif
// Inside an AppImage the binary lives in a read-only mount and argv[0] can
// be a bare name or symlink (launched via PATH / a .desktop file). $APPIMAGE
// is the .AppImage's own path, so settings.toml anchors next to it.
if (exe_dir.empty()) {
if (const char* appimg = std::getenv("APPIMAGE"); appimg && appimg[0]) {
exe_dir = fs::absolute(appimg, ec).parent_path();
if (ec) exe_dir.clear();
}
}
if (exe_dir.empty() && argv0 && argv0[0]) {
exe_dir = fs::absolute(argv0, ec).parent_path();
if (ec) exe_dir.clear();
}
// Last-ditch only (should be unreachable on a normal launch); a bare "." so
// we never silently resolve against an unrelated cwd deeper in the tree.
if (exe_dir.empty()) exe_dir = fs::path(".");
return exe_dir;
}
static std::filesystem::path resolve_existing_runtime_path(const char* requested,
const char* argv0) {
namespace fs = std::filesystem;
if (!requested || !requested[0]) return {};
std::error_code ec;
fs::path p(requested);
if (fs::exists(p, ec)) return fs::absolute(p, ec);
if (p.is_absolute()) return {};
// Anchor exclusively on the exe directory — never cwd (see exe_dir_from_argv).
const fs::path root = exe_dir_from_argv(argv0);
fs::path direct = root / p;
if (fs::exists(direct, ec)) return fs::absolute(direct, ec);
fs::path found = find_upward(root, p);
if (!found.empty()) return fs::absolute(found / p, ec);
return {};
}
static std::filesystem::path sidecar_cfg_path(const char* argv0, const char* filename) {
return exe_dir_from_argv(argv0) / filename;
}
static std::filesystem::path read_cached_path(const char* argv0, const char* filename) {
std::ifstream f(sidecar_cfg_path(argv0, filename));
if (!f.is_open()) return {};
std::string line;
std::getline(f, line);
while (!line.empty() && (line.back() == '\n' || line.back() == '\r')) {
line.pop_back();
}
return line.empty() ? std::filesystem::path{} : std::filesystem::path(line);
}
static void write_cached_path(const char* argv0, const char* filename,
const std::filesystem::path& path) {
std::ofstream f(sidecar_cfg_path(argv0, filename), std::ios::trunc);
if (f.is_open()) f << path.string() << "\n";
}
static void launcher_warning(const char* title, const std::string& msg) {
std::fprintf(stderr, "%s: %s\n", title, msg.c_str());
#ifdef _WIN32
// Headless (--headless / PSX_HEADLESS): NEVER pop a blocking modal — it would
// hang an unattended/CI/scripted run forever waiting for a click.
if (!g_headless) MessageBoxA(NULL, msg.c_str(), title, MB_OK | MB_ICONWARNING);
#endif
}
static void launcher_info(const char* title, const std::string& msg) {
std::fprintf(stderr, "%s: %s\n", title, msg.c_str());
#ifdef _WIN32
if (!g_headless) MessageBoxA(NULL, msg.c_str(), title, MB_OK | MB_ICONINFORMATION);
#endif
}
/* Game display name for picker dialogs ("Tomba!"); set after the game
* config loads, before any interactive file resolution. */
static std::string s_picker_game_name = "PSXRecomp";
static bool pick_runtime_file(const char* title, const char* filter,
std::filesystem::path& out) {
// Headless: never open an interactive file dialog (it blocks). Fail the
// resolve so boot aborts cleanly with the stderr message the caller printed.
if (g_headless) {
std::fprintf(stderr, "psxrecomp: headless — cannot prompt for '%s'; "
"supply it via game.toml / --disc / --bios.\n", title);
return false;
}
#ifdef _WIN32
char path_buf[4096];
std::memset(path_buf, 0, sizeof(path_buf));
OPENFILENAMEA ofn;
std::memset(&ofn, 0, sizeof(ofn));
ofn.lStructSize = sizeof(ofn);
ofn.hwndOwner = NULL;
ofn.lpstrFilter = filter;
ofn.lpstrFile = path_buf;
ofn.nMaxFile = (DWORD)sizeof(path_buf);
ofn.lpstrTitle = title;
ofn.Flags = OFN_FILEMUSTEXIST | OFN_PATHMUSTEXIST | OFN_HIDEREADONLY;
if (!GetOpenFileNameA(&ofn)) return false;
out = path_buf;
return true;
#else
(void)filter;
(void)out;
std::fprintf(stderr, "psxrecomp: %s requires a command-line path on this platform.\n", title);
return false;
#endif
}
static std::string uppercase_ascii(std::string s) {
for (char& c : s) {
c = (char)std::toupper((unsigned char)c);
}
return s;
}
// Region display label for the launcher, derived from the game-id serial
// prefix (e.g. "SCUS-94423" -> "(USA)"). Used only when game.toml [game]
// leaves `region` unset. Unknown/empty serials yield "" (no badge) rather
// than guessing.
static std::string region_label_from_serial(const std::string& serial) {
if (serial.size() < 3) return std::string();
const std::string up = uppercase_ascii(serial);
const std::string p4 = up.substr(0, std::min<size_t>(4, up.size()));
const std::string p3 = up.substr(0, 3);
if (p4 == "SCUS" || p4 == "SLUS" || p3 == "LSP") return "(USA)";
if (p4 == "SCES" || p4 == "SLES") return "(Europe)";
if (p4 == "SCPS" || p4 == "SLPS" || p4 == "SLPM") return "(Japan)";
return std::string();
}
static bool read_at(std::ifstream& f, uint64_t offset, uint8_t* out, size_t len) {
f.clear();
f.seekg((std::streamoff)offset, std::ios::beg);
if (!f.good()) return false;
f.read(reinterpret_cast<char*>(out), (std::streamsize)len);
return f.gcount() == (std::streamsize)len;
}
struct DiscValidation {
bool opened = false;
bool has_header = false;
bool id_matches = false;
std::string detail;
};
static DiscValidation validate_disc_image(const std::filesystem::path& selected_path,
const std::string& game_id) {
// Delegate to the shared disc-identity module so the launch-time check and
// the launcher badge can never drift apart. No CRC here — the launch check
// only cares about openability / header / serial; the launcher does the
// (slower) CRC pass when an expected CRC is configured.
const PSXRecompV4::DiscIdentity id =
PSXRecompV4::identify_disc(selected_path, game_id, /*expected_crc*/0,
/*has_expected_crc*/false, /*compute_crc*/false);
DiscValidation v;
v.opened = id.opened;
v.has_header = id.has_header;
v.id_matches = game_id.empty() ? true : id.serial_matches;
v.detail = id.detail;
if (id.opened && id.has_header && !v.id_matches && v.detail.empty()) {
v.detail = "The disc header is readable, but it does not contain the expected game ID " +
uppercase_ascii(game_id) + " in the early disc metadata.";
}
return v;
}
static bool validate_disc_for_launch(const std::filesystem::path& path,
const std::string& game_id) {
const DiscValidation v = validate_disc_image(path, game_id);
if (!v.opened) {
launcher_warning("Disc Image Not Found", v.detail + "\n\nSelected path:\n" + path.string());
return false;
}
if (!v.has_header || !v.id_matches) {
launcher_warning("Disc Image Warning",
v.detail + "\n\nThis may be the wrong game or a corrupt image. The runtime will try to run it anyway.");
}
return true;
}
static std::filesystem::path normalize_disc_path_for_launch(const std::filesystem::path& path) {
namespace fs = std::filesystem;
std::error_code ec;
fs::path p = fs::absolute(path, ec);
if (ec) p = path;
if (uppercase_ascii(p.extension().string()) == ".CUE") {
fs::path bin = p;
bin.replace_extension(".bin");
if (fs::exists(bin, ec)) {
fs::path abs = fs::absolute(bin, ec);
return ec ? bin : abs;
}
ec.clear();
bin.replace_extension(".BIN");
if (fs::exists(bin, ec)) {
fs::path abs = fs::absolute(bin, ec);
return ec ? bin : abs;
}
}
return p;
}
/* BIOS selection state (docs/BIOS_SELECTION.md). s_openbios_allowed is the
* game's [runtime] openbios; s_bundled_bios_rel is where the shipped
* redistributable image lives relative to the executable. */
static bool s_openbios_allowed = true;
static std::string s_bundled_bios_rel = PSX_BUNDLED_BIOS_PATH;
/* Identity-match a file against a linked backend. Size+CRC must agree —
* bytes is a guaranteed wild jump. Identity therefore decides WHICH backend
* may run, not merely whether to warn. Null = no linked image matches.
*/
static const PsxBiosBackend* bios_backend_for_file(const std::filesystem::path& path,
uint32_t* out_crc,
uint64_t* out_size) {
std::ifstream f(path, std::ios::binary | std::ios::ate);
if (!f.is_open()) return nullptr;
const std::streamoff size = f.tellg();
if (out_size) *out_size = (uint64_t)size;
if (size <= 0) return nullptr;
std::vector<uint8_t> data((size_t)size);
if (!read_at(f, 0, data.data(), data.size())) return nullptr;
const uint32_t crc = crc32_compute(data.data(), data.size());
if (out_crc) *out_crc = crc;
for (uint32_t i = 0; i < psx_bios_registry_count; i++) {
const PsxBiosBackend* b = psx_bios_registry[i];
if (!b || !b->image) continue;
if ((uint64_t)size == (uint64_t)b->image->image_size &&
crc == b->image->image_crc32)
return b;
}
return nullptr;
}
/* What a player may supply, for mismatch and picker copy. The bundled image is
* excluded: it is never something to go and find. */
static std::string bios_accepted_images() {
std::string s;
for (uint32_t i = 0; i < psx_bios_registry_count; i++) {
const PsxBiosBackend* b = psx_bios_registry[i];
if (!b || !b->image || b->image->image_bundled) continue;
if (!s.empty()) s += ", ";
s += b->image->image_id;
s += " (" + std::to_string(b->image->image_size / 1024u) + " KB)";
}
return s.empty() ? std::string("(this build ships its own BIOS)") : s;
}
/* Identity-gate a player-chosen BIOS and activate its backend on success. */
static bool validate_bios_for_launch(const std::filesystem::path& path) {
uint32_t crc = 0; uint64_t size = 0;
const PsxBiosBackend* b = bios_backend_for_file(path, &crc, &size);
if (b) return psx_bios_activate(b) != 0;
char buf[512];
std::snprintf(buf, sizeof(buf),
"That BIOS (%llu bytes, CRC32 %08X) is not an image this build was "
"compiled from.\n\nThis build accepts: %s\n\nThe compiled-in code "
"would execute against mismatched data and crash.",
(unsigned long long)size, crc, bios_accepted_images().c_str());
launcher_warning("BIOS Mismatch", buf);
return false;
}
static std::filesystem::path resolve_bios_path(const char* requested, const char* argv0);
/* Resolve which BIOS image file to load, and activate its backend.
*
* Policy (docs/BIOS_SELECTION.md):
* no explicit player choice -> bundled OpenBIOS, silently
* explicit choice, matching -> that image
* explicit choice, mismatched-> explained; falls back to OpenBIOS if allowed
* openbios disabled for this title -> a retail image is required
*
* "Explicit" means --bios or a remembered launcher/settings pick. Finding a
* file on disk deliberately does NOT count: discovery used to adopt whatever
* happened to sit near the executable, so two players with the same build
* could end up on different BIOSes.
*/
static std::filesystem::path resolve_bios_for_runtime(const char* requested,
const char* argv0,
bool requested_is_explicit) {
const bool openbios_allowed = s_openbios_allowed;
const PsxBiosBackend* bundled = psx_bios_bundled();
/* 1. An explicit choice: --bios, else a remembered pick. */
std::filesystem::path chosen;
if (requested_is_explicit && requested && requested[0]) {
chosen = resolve_bios_path(requested, argv0);
} else {
std::filesystem::path cached = read_cached_path(argv0, "bios.cfg");
if (!cached.empty() && std::filesystem::exists(cached)) chosen = cached;
}
if (!chosen.empty() && std::filesystem::exists(chosen)) {
if (validate_bios_for_launch(chosen)) return chosen; /* activates it */
if (!(openbios_allowed && bundled)) return {};
}
/* 2. No usable explicit choice -> bundled OpenBIOS, if this title allows it. */
if (openbios_allowed && bundled) {
std::filesystem::path img = resolve_bios_path(
s_bundled_bios_rel.empty() ? nullptr : s_bundled_bios_rel.c_str(), argv0);
if (!img.empty() && std::filesystem::exists(img) &&
bios_backend_for_file(img, nullptr, nullptr) == bundled &&
psx_bios_activate(bundled)) {
return img;
}
launcher_warning("Bundled BIOS Missing",
std::string("This build ships its own BIOS (") +
bundled->image->image_id + "), but the bundled image is missing "
"or does not match.\n\nExpected next to the executable:\n" +
(s_bundled_bios_rel.empty() ? "(default path)" : s_bundled_bios_rel) +
"\n\nReinstall or rebuild.");
return {};
}
/* 3. This title requires a retail BIOS: ask for one. */
const std::string accepted = bios_accepted_images();
launcher_info((s_picker_game_name + " — PlayStation BIOS needed").c_str(),
s_picker_game_name + " requires a PlayStation BIOS.\n\n"
"Step 1 of 2 — PlayStation BIOS\n\n"
"In the next window, select your PlayStation BIOS dump. This build "
"requires the exact image it was compiled from: " + accepted + ". "
"Usually named SCPH1001.BIN and exactly 512 KB. Dump from your own "
"console or otherwise legally obtain it.\n\n"
"(This is NOT the game disc — that is asked for next.)");
std::string bios_title =
s_picker_game_name + " — Step 1 of 2: select PlayStation BIOS (" +
accepted + ")";
for (;;) {
std::filesystem::path picked;
if (!pick_runtime_file(
bios_title.c_str(),
"PlayStation BIOS (*.bin)\0*.bin\0All Files (*.*)\0*.*\0",
picked)) {
return {};
}
if (validate_bios_for_launch(picked)) {
write_cached_path(argv0, "bios.cfg", picked);
return picked;
}
}
}
static std::filesystem::path resolve_disc_for_runtime(const std::filesystem::path& config_disc,
const char* disc_override,
const std::string& game_id,
const char* argv0) {
if (disc_override && disc_override[0]) {
std::filesystem::path p = normalize_disc_path_for_launch(disc_override);
return validate_disc_for_launch(p, game_id) ? p : std::filesystem::path{};
}
// A relative disc path in game.toml resolves against the exe dir (never cwd);
// resolve_existing_runtime_path also walks up from there (build/ -> game dir),
// so an out-of-tree build layout still finds the bundled disc.
if (!config_disc.empty()) {
std::filesystem::path cd = config_disc;
if (cd.is_relative()) {
std::filesystem::path r = resolve_existing_runtime_path(config_disc.string().c_str(), argv0);
if (!r.empty()) cd = r;
}
cd = normalize_disc_path_for_launch(cd);
if (std::filesystem::exists(cd) && validate_disc_for_launch(cd, game_id)) {
return cd;
}
}
std::filesystem::path cached = read_cached_path(argv0, "disc.cfg");
if (!cached.empty()) {
cached = normalize_disc_path_for_launch(cached);
}
if (!cached.empty() && std::filesystem::exists(cached) &&
validate_disc_for_launch(cached, game_id)) {
return cached;
}
launcher_info((s_picker_game_name + " — game disc image needed").c_str(),
"Step 2 of 2 — game disc image\n\n"
"In the next window, select your " + s_picker_game_name +
(game_id.empty() ? std::string() : " (" + game_id + ")") +
" disc image ripped from your own disc.\n\n"
"Accepted formats: .cue (preferred, with its .bin next to it), "
".bin, or .iso.\n\n"
"(This is NOT the BIOS — the BIOS was already chosen.)");
std::string disc_title =
s_picker_game_name + " — Step 2 of 2: select " + s_picker_game_name +
" disc image (.cue / .bin / .iso)";
for (;;) {
std::filesystem::path picked;
if (!pick_runtime_file(
disc_title.c_str(),
"PS1 Disc Images (*.cue;*.bin;*.iso)\0*.cue;*.bin;*.iso\0All Files (*.*)\0*.*\0",
picked)) {
return {};
}
picked = normalize_disc_path_for_launch(picked);
if (validate_disc_for_launch(picked, game_id)) {
write_cached_path(argv0, "disc.cfg", picked);
return picked;
}
}
}
static std::filesystem::path resolve_bios_path(const char* requested, const char* argv0) {
namespace fs = std::filesystem;
std::error_code ec;
if (!requested || !requested[0]) return {};
fs::path p(requested);
if (fs::exists(p, ec)) {
fs::path abs = fs::absolute(p, ec);
return ec ? p : abs;
}
if (p.is_absolute()) return p;
// Anchor on the exe directory — never cwd (see exe_dir_from_argv).
fs::path found = find_upward(exe_dir_from_argv(argv0), p);
if (!found.empty()) return found / p;
// Dev-checkout rung: game projects keep the framework at
// <game root>/psxrecomp-v4 (junction/worktree), so a relative default like
// "bios/SCPH1001.BIN" lives under that prefix rather than at the game root.
// A user install has no psxrecomp-v4 directory, so this rung cannot
// resolve a build-machine BIOS there — it falls through to bios.cfg or the
// interactive picker.
const fs::path dev_marker = fs::path("psxrecomp-v4") / p;
found = find_upward(exe_dir_from_argv(argv0), dev_marker);
if (!found.empty()) return found / dev_marker;
return p;
}
// Fallback memcard directory used when no game config (or its [runtime]
// block) specifies one: the executable's directory (authoritative, never cwd —
// see exe_dir_from_argv), so saves always live next to the binary.
static std::filesystem::path default_memcard_dir(const char* argv0) {
return exe_dir_from_argv(argv0);
}
static void close_controller(void);
static void shutdown_runtime(void);
/* Set when this process started netplay from the lobby room — soft-exit returns
* there instead of killing the process. */
static int g_netplay_from_lobby = 0;
static int g_netplay_vsync_forced_off = 0;
/* Host-only: lockstep already couples peers. Driver vsync on top of the
* wall-clock pacer double-blocks the vblank callback (present is before the
* guest resumes), which shows up as MotK FMV ~30–40 FPS in netplay vs ~50+
* offline. Force immediate swaps for the session; restore on soft-exit. */
static void netplay_host_present_uncap(void) {
#ifndef PSX_SDL_NO_RENDER
if (g_gl_active) gl_renderer_set_swap_interval(0);
if (g_vk_active) vk_renderer_set_present_mode(0);
#endif
g_netplay_vsync_forced_off = 1;
}
static void netplay_host_present_restore(void) {
if (!g_netplay_vsync_forced_off) return;
#ifndef PSX_SDL_NO_RENDER
if (g_gl_active) gl_renderer_set_swap_interval(g_video_vsync);
if (g_vk_active) vk_renderer_set_present_mode(g_video_vsync);
#endif
g_netplay_vsync_forced_off = 0;
}
static void netplay_soft_exit(const char *origin) {
psx_crash_trace_set_exit_origin(origin);
netplay_host_present_restore();
psx_netplay_shutdown(); /* sends BYE so the peer soft-exits too */
if (g_netplay_from_lobby) {
std::printf("psxrecomp: netplay ended (%s) — returning to lobby\n",
origin ? origin : "?");
std::fflush(stdout);
psx_request_return_to_lobby();
return;
}
shutdown_runtime();
std::exit(0);
}
static void shutdown_runtime(void) {
/* (sljit removed 2026-07-15: overlay_compile_worker_stop joined the
* off-thread JIT worker here; the worker no longer exists.) */
psx_netplay_shutdown();
memcard_flush_all();
overlay_autocapture_shutdown();
overlay_capture_wait_pending();
overlay_capture_write_json();
if (sdl_audio_device) {
psx_sdl_audio_clear(sdl_audio_device);
psx_sdl_audio_close(sdl_audio_device); /* stops the pull callback */
sdl_audio_device = 0;
}
if (s_drc_ready) { rab_free(&s_drc); s_drc_ready = false; }
close_controller();
debug_server_shutdown();
}
/* Tear down the game window/GL/audio after a lobby soft-return. Leaves SDL
* subsystems and the lobby WebSocket intact for the next launcher session. */
static void teardown_game_session_keep_lobby(void) {
netplay_host_present_restore();
psx_netplay_shutdown();
memcard_flush_all();
if (sdl_audio_device) {
psx_sdl_audio_clear(sdl_audio_device);
psx_sdl_audio_close(sdl_audio_device);
sdl_audio_device = 0;
}
if (s_drc_ready) { rab_free(&s_drc); s_drc_ready = false; }
close_controller();
if (g_vk_active) {
vk_renderer_shutdown();
g_vk_active = false;
}
if (g_gl_active) {
gl_renderer_shutdown();
g_gl_active = false;
}
if (sdl_texture) { SDL_DestroyTexture(sdl_texture); sdl_texture = nullptr; }
if (sdl_renderer) { SDL_DestroyRenderer(sdl_renderer); sdl_renderer = nullptr; }
if (sdl_window) { SDL_DestroyWindow(sdl_window); sdl_window = nullptr; }
if (sdl_pixel_buf) { std::free(sdl_pixel_buf); sdl_pixel_buf = nullptr; }
/* Rematch must re-run force_sw (and prefer CPU-auth GL present again). */
s_netplay_sw_gpu_locked = 0;
s_netplay_gl_present = 0;
s_netplay_sim_native_scale = 0;
gl_renderer_set_cpu_auth_dual(0);
psx_lobby_set_ready(0);
psx_lobby_clear_launch_pending();
#if defined(PSX_HAS_LOBBY_CLIENT)
/* Drop prior-match ICE SDP/candidates; ignore new ones until next launch. */
psx_lobby_clear_signals();
psx_lobby_set_ice_signal_accept(0);
#endif
psx_clear_return_to_lobby();
}
/* Linear gain ramp g0 -> g1 across a block of interleaved stereo frames. */
static void sdl_audio_gain_ramp(int16_t* buf, int frames, float g0, float g1) {
if (frames <= 0) return;
const float step = (g1 - g0) / (float)frames;
float g = g0;
for (int f = 0; f < frames; f++, g += step) {
buf[f * 2 + 0] = (int16_t)((float)buf[f * 2 + 0] * g);
buf[f * 2 + 1] = (int16_t)((float)buf[f * 2 + 1] * g);
}
}
/* Fade-in state: samples of rising ramp still to apply after an unmute.
* Consumed by sdl_audio_pump across however many pump calls it spans.
* MUST fit sdl_audio_buf (2048 frames): the fade-out tail renders this many
* frames in one spu_render call. 1764 frames = 40 ms. */
static const int sdl_audio_fade_samples = 44100 * 40 / 1000; /* 40 ms */
static int sdl_audio_fadein_left = 0;
static void sdl_audio_pump(bool discard_output = false) {
if (!sdl_audio_device) return;
const uint32_t bytes_per_frame = sizeof(int16_t) * 2u;
const bool legacy = audio_legacy_mode();
static int had_audio = 0;
uint32_t queued = 0; /* RENDER event b: bytes (legacy) / fill ms (bridge) */
if (discard_output) {
/* Host-only sink: skip all queue/bridge interaction, but continue to
* the guest-cycle sample budget and spu_render below. */
} else if (legacy) {
/* Historical push model + baseline measurement: a drained (==0) queue
* means the device was silence-filling since the last pump = a gap.
* Only meaningful after the first audio has been queued. */
const uint32_t max_queue_bytes = 44100u * bytes_per_frame / 5u;
queued = psx_sdl_audio_queued_size(sdl_audio_device);
if (queued == 0 && had_audio) {
g_legacy_underruns++;
audio_trace_event(AUDIO_EV_UNDERRUN, 0, 0);
}
if (queued > max_queue_bytes) {
audio_trace_event(AUDIO_EV_PUMP_SKIP, queued, 0);
return;
}
} else {
/* No host-queue backpressure check: the bridge's ring + DRC hold the
* fill near target, so we always render this frame and push it. */
if (!s_drc_ready) return;
/* Surface bridge underruns (counted on the SDL audio thread) into the
* event ring from this thread — the event ring is single-writer.
* Across a turbo mute the ring intentionally runs dry (the pump stops
* while the callback keeps pulling); those dry pulls are the mute,
* not gaps — resync past them instead of reporting them. */
rab_stats st;
rab_get_stats(&s_drc, &st);
static uint64_t prev_underruns = 0;
extern int g_audio_unmute_resync;
if (g_audio_unmute_resync) {
prev_underruns = st.underrun_events;
g_audio_unmute_resync = 0;
} else if (st.underrun_events > prev_underruns) {
audio_trace_event(AUDIO_EV_UNDERRUN,
(uint32_t)(st.underrun_events - prev_underruns), 1);
prev_underruns = st.underrun_events;
}
queued = (uint32_t)st.last_fill_ms;
}
/* Faithful sample budget: the SPU is clocked by the GUEST, not by host
* presents. 33.8688 MHz / 44100 Hz = exactly 768 guest cycles per output
* frame, so production tracks guest time precisely — including the real
* NTSC 59.94 Hz vblank — instead of assuming 60.00 Hz per present, which
* built in a systematic -0.1% production deficit (measured: 43950/s
* produced vs 44100/s consumed = recurring ring underruns no +/-0.5%
* DRC trim could absorb during jitter spikes). */
extern uint64_t psx_cycle_count;
static uint64_t last_cycles = 0;
static uint64_t cycle_carry = 0;
const uint64_t now_cycles = psx_cycle_count;
if (g_audio_cycle_resync) {
last_cycles = now_cycles;
cycle_carry = 0;
g_audio_cycle_resync = 0;
if (legacy)
psx_sdl_audio_clear(sdl_audio_device);
else
g_audio_unmute_resync = 1; /* skip mute-drain underrun reports */
return;
}
if (last_cycles == 0) last_cycles = now_cycles;
uint64_t delta = (now_cycles - last_cycles) + cycle_carry;
last_cycles = now_cycles;
int frames = (int)(delta / 768u);
cycle_carry = delta % 768u;
if (frames <= 0) return;
if (frames > 2048) {
/* A burst beyond one buffer (e.g. right after an unmute or a long
* stall): render one full buffer and DROP the remainder of the debt —
* same semantic as the mute model (voice positions freeze across the
* gap) rather than time-compressing a backlog into garble. */
frames = 2048;
cycle_carry = 0;
}
audio_trace_event(AUDIO_EV_RENDER, (uint32_t)frames, queued);
spu_render(sdl_audio_buf, frames);
if (discard_output) {
g_turbo_audio_sink_frames += (uint64_t)frames;
audio_trace_event(AUDIO_EV_SINK_DROP, (uint32_t)frames, 0);
return;
}
if (sdl_audio_fadein_left > 0) {
const float g0 = 1.0f - (float)sdl_audio_fadein_left
/ (float)sdl_audio_fade_samples;
int ramp = sdl_audio_fadein_left < frames ? sdl_audio_fadein_left : frames;
const float g1 = 1.0f - (float)(sdl_audio_fadein_left - ramp)
/ (float)sdl_audio_fade_samples;
sdl_audio_gain_ramp(sdl_audio_buf, ramp, g0, g1);
sdl_audio_fadein_left -= ramp;
}
if (legacy) {
/* T3 tap: the exact post-fade bytes handed to the host audio queue. */
audio_trace_pcm(AUDIO_TAP_HOST, sdl_audio_buf, frames);
psx_sdl_audio_queue(sdl_audio_device, sdl_audio_buf, (uint32_t)frames * bytes_per_frame);
had_audio = 1;
} else {
/* Hand to the bridge (band-limited resample + DRC) instead of
* SDL_QueueAudio. Lock guards the SPSC ring against the pull callback.
* The T3 tap moves to sdl_drc_callback: what the device actually
* receives is the bridge's device-rate output, not this buffer. */
psx_sdl_audio_lock(sdl_audio_device);
rab_push(&s_drc, sdl_audio_buf, frames);
psx_sdl_audio_unlock(sdl_audio_device);
}
}
/* Audio gating across turbo-loads transitions.
*
* The mute model stays: during turbo the guest runs at host speed, so
* rendered SPU audio is time-compressed garble — we stop pumping, the queue
* drains, voice positions freeze, and music resumes in place afterward.
* What changes is the EDGES:
* - entering turbo: render one short tail of the current voice state,
* ramp it to silence, and queue it — the drain ends in a fade instead
* of a hard cut;
* - leaving turbo: hold the mute for a short hangover first (loads often
* re-trigger within a few frames; without the debounce the mute would
* flicker audibly), then resume pumping with a rising ramp applied
* across the first ~50 ms of samples (sdl_audio_pump above). */
/* Bridge/legacy output health, surfaced through the audio_stats TCP command
* (debug_server.c) — no stderr probe; rule 3. */
extern "C" int psx_audio_out_stats(double *fill_ms, double *target_ms,
uint64_t *underruns,
uint64_t *overflow_drops, double *correction,
int *legacy, int *host_rate)
{
*legacy = audio_legacy_mode() ? 1 : 0;
*host_rate = g_audio_host_rate;
if (*legacy || !s_drc_ready) {
*fill_ms = sdl_audio_device
? (double)psx_sdl_audio_queued_size(sdl_audio_device)
/ (44100.0 * 4.0) * 1000.0
: 0.0;
*target_ms = 0.0; /* push queue — no DRC fill target */
*underruns = g_legacy_underruns;
*overflow_drops = 0;
*correction = 0.0;
return sdl_audio_device != 0;
}
rab_stats st;
rab_get_stats(&s_drc, &st);
*fill_ms = st.last_fill_ms;
*target_ms = s_drc.cfg.target_ms;
*underruns = st.underrun_events;
*overflow_drops = st.overflow_drops;
*correction = st.last_correction;
return 1;
}
/* Lightweight production-safe cadence probe. Unlike the TCP debug build this
* adds no per-block or per-instruction recording. All counter/timer work below
* is opt-in via PSX_RUNTIME_PERF_DIAG; the normal Release path pays only the
* existing once-per-vblank disabled checks. */
struct RuntimePerfSnapshot {
uint64_t counter = 0;
uint64_t frame = 0;
uint64_t guest_work_ticks = 0;
uint64_t pacer_ticks = 0;
uint64_t autocapture_ticks = 0;
uint64_t provider_poll_ticks = 0;
uint64_t dirty_insns = 0;
uint64_t dirty_dispatches = 0;
uint32_t overlay_loads = 0;
uint32_t overlay_invalidations = 0;
uint32_t overlay_unregistered = 0;
uint64_t overlay_native = 0;
uint64_t overlay_interp = 0;
uint64_t overlay_stale = 0;
uint32_t overlay_revalidations = 0;
uint32_t overlay_hot_native_pc = 0;
uint64_t overlay_hot_native_calls = 0;
uint64_t overlay_shadow_calls = 0;
uint64_t overlay_shadow_divergences = 0;
uint32_t overlay_first_divergence_pc = 0;
uint32_t capture_triggers = 0;
uint64_t capture_last_dispatch_delta = 0;
int capture_overlays = 0;
};
struct RuntimePerfState {
bool initialized = false;
bool enabled = false;
uint32_t interval_ms = 5000;
uint64_t frequency = 0;
uint64_t last_frame_exit_counter = 0;
uint64_t guest_work_ticks = 0;
uint64_t pacer_ticks = 0;
uint64_t autocapture_ticks = 0;
uint64_t provider_poll_ticks = 0;
bool bench_configured = false;
bool bench_started = false;
bool bench_reported = false;
uint64_t bench_start_frame = 0;
uint64_t bench_end_frame = 0;
RuntimePerfSnapshot bench_start;
};
static RuntimePerfState g_runtime_perf;
static bool runtime_perf_parse_window(const char *text, uint64_t *start,
uint64_t *end) {
if (!text || !text[0]) return false;
char *middle = nullptr;
unsigned long long first = std::strtoull(text, &middle, 10);
if (middle == text || *middle != ':') return false;
char *tail = nullptr;
unsigned long long last = std::strtoull(middle + 1, &tail, 10);
if (tail == middle + 1 || *tail != '\0' || first == 0 || last <= first)
return false;
*start = (uint64_t)first;
*end = (uint64_t)last;
return true;
}
static void runtime_perf_init() {
if (g_runtime_perf.initialized) return;
g_runtime_perf.initialized = true;
const char *enabled = std::getenv("PSX_RUNTIME_PERF_DIAG");
g_runtime_perf.enabled = enabled && enabled[0] && enabled[0] != '0';
if (!g_runtime_perf.enabled) return;
g_runtime_perf.frequency = SDL_GetPerformanceFrequency();
if (!g_runtime_perf.frequency) g_runtime_perf.frequency = 1;
if (const char *interval = std::getenv("PSX_RUNTIME_PERF_DIAG_MS")) {
char *tail = nullptr;
long requested = std::strtol(interval, &tail, 10);
if (tail != interval && *tail == '\0') {
if (requested < 250) requested = 250;
if (requested > 600000) requested = 600000;
g_runtime_perf.interval_ms = (uint32_t)requested;
} else {
std::fprintf(stderr,
"psxrecomp: ignoring invalid PSX_RUNTIME_PERF_DIAG_MS='%s'\n",
interval);
}
}
if (const char *window = std::getenv("PSX_BENCH_WINDOW")) {
if (runtime_perf_parse_window(window,
&g_runtime_perf.bench_start_frame,
&g_runtime_perf.bench_end_frame)) {
g_runtime_perf.bench_configured = true;
} else {
std::fprintf(stderr,
"psxrecomp: ignoring invalid PSX_BENCH_WINDOW='%s' "
"(expected start:end, start >= 1, end > start)\n", window);
}
}
std::fprintf(stdout, "psxrecomp: runtime perf diagnostics enabled: interval=%u ms",
g_runtime_perf.interval_ms);
if (g_runtime_perf.bench_configured)
std::fprintf(stdout, ", bench=%llu:%llu",
(unsigned long long)g_runtime_perf.bench_start_frame,
(unsigned long long)g_runtime_perf.bench_end_frame);
std::fprintf(stdout, "\n");
std::fflush(stdout);
}
static RuntimePerfSnapshot runtime_perf_snapshot(uint64_t now) {
RuntimePerfSnapshot s;
s.counter = now;
s.frame = s_frame_count;
s.guest_work_ticks = g_runtime_perf.guest_work_ticks;
s.pacer_ticks = g_runtime_perf.pacer_ticks;
s.autocapture_ticks = g_runtime_perf.autocapture_ticks;
s.provider_poll_ticks = g_runtime_perf.provider_poll_ticks;
s.dirty_insns = g_dirty_ram_insns_run;
s.dirty_dispatches = g_dirty_window_dispatches;
overlay_loader_get_counters(&s.overlay_loads, &s.overlay_invalidations,
&s.overlay_unregistered, &s.overlay_native,
&s.overlay_interp, &s.overlay_stale,
nullptr, nullptr, nullptr, nullptr,
&s.overlay_revalidations);
overlay_loader_take_hot_native(&s.overlay_hot_native_pc,
&s.overlay_hot_native_calls);
overlay_loader_get_shadow_summary(&s.overlay_shadow_calls,
&s.overlay_shadow_divergences,
&s.overlay_first_divergence_pc);
int capture_enabled = 0;
overlay_autocapture_get_status(&capture_enabled, &s.capture_triggers,
&s.capture_last_dispatch_delta);
s.capture_overlays = overlay_capture_count();
return s;
}
static double runtime_perf_ticks_ms(uint64_t ticks) {
return (double)ticks * 1000.0 / (double)g_runtime_perf.frequency;
}
static void runtime_perf_bench_tick(uint64_t now) {
if (!g_runtime_perf.bench_configured || g_runtime_perf.bench_reported) return;
if (!g_runtime_perf.bench_started) {
if (s_frame_count == g_runtime_perf.bench_start_frame) {
g_runtime_perf.bench_start = runtime_perf_snapshot(now);
g_runtime_perf.bench_started = true;
}
return;
}
if (s_frame_count != g_runtime_perf.bench_end_frame) return;
RuntimePerfSnapshot end = runtime_perf_snapshot(now);
const RuntimePerfSnapshot &start = g_runtime_perf.bench_start;
std::fprintf(stdout,
"[BENCH] window=%llu:%llu frames=%llu wall_ms=%.3f "
"guest_work_ms=%.3f pacer_ms=%.3f autocapture_main_ms=%.3f "
"provider_poll_ms=%.3f "
"dirty_insns=+%llu dirty_dispatches=+%llu "
"overlay_native=+%llu overlay_interp=+%llu overlay_loads=+%u "
"overlay_invalidations=+%u overlay_unregistered=+%u "
"overlay_stale=+%llu overlay_revalidations=+%u "
"capture_triggers=+%u capture_overlays=+%d "
"capture_last_dispatch_delta=%llu\n",
(unsigned long long)start.frame, (unsigned long long)end.frame,
(unsigned long long)(end.frame - start.frame),
runtime_perf_ticks_ms(end.counter - start.counter),
runtime_perf_ticks_ms(end.guest_work_ticks - start.guest_work_ticks),
runtime_perf_ticks_ms(end.pacer_ticks - start.pacer_ticks),
runtime_perf_ticks_ms(end.autocapture_ticks - start.autocapture_ticks),
runtime_perf_ticks_ms(end.provider_poll_ticks - start.provider_poll_ticks),
(unsigned long long)(end.dirty_insns - start.dirty_insns),
(unsigned long long)(end.dirty_dispatches - start.dirty_dispatches),
(unsigned long long)(end.overlay_native - start.overlay_native),
(unsigned long long)(end.overlay_interp - start.overlay_interp),
end.overlay_loads - start.overlay_loads,
end.overlay_invalidations - start.overlay_invalidations,
end.overlay_unregistered - start.overlay_unregistered,
(unsigned long long)(end.overlay_stale - start.overlay_stale),
end.overlay_revalidations - start.overlay_revalidations,
end.capture_triggers - start.capture_triggers,
end.capture_overlays - start.capture_overlays,
(unsigned long long)end.capture_last_dispatch_delta);
std::fflush(stdout);
g_runtime_perf.bench_reported = true;
}
static void runtime_perf_frame_begin() {
runtime_perf_init();
if (!g_runtime_perf.enabled) return;
uint64_t now = SDL_GetPerformanceCounter();
if (g_runtime_perf.last_frame_exit_counter &&
now >= g_runtime_perf.last_frame_exit_counter) {
g_runtime_perf.guest_work_ticks +=
now - g_runtime_perf.last_frame_exit_counter;
}
runtime_perf_bench_tick(now);
}
static void runtime_perf_frame_end() {
if (!g_runtime_perf.enabled) return;
g_runtime_perf.last_frame_exit_counter = SDL_GetPerformanceCounter();
}
class RuntimePerfFrameScope {
public:
~RuntimePerfFrameScope() { runtime_perf_frame_end(); }
};
static uint64_t runtime_perf_section_begin() {
return g_runtime_perf.enabled ? SDL_GetPerformanceCounter() : 0;
}
static void runtime_perf_section_end(uint64_t start, uint64_t *total) {
if (!start) return;
uint64_t end = SDL_GetPerformanceCounter();
if (end >= start) *total += end - start;
}
static void runtime_perf_diag_tick() {
static bool have_last = false;
static RuntimePerfSnapshot last;
static uint64_t last_spu = 0, last_underruns = 0, last_overflows = 0;
static uint64_t last_up[6] = {0};
static uint64_t last_overlay_load_us = 0;
if (!g_runtime_perf.enabled) return;
uint64_t now = SDL_GetPerformanceCounter();
const uint64_t interval_ticks =
g_runtime_perf.frequency * (uint64_t)g_runtime_perf.interval_ms / 1000u;
if (have_last && now - last.counter < interval_ticks) return;
RuntimePerfSnapshot current = runtime_perf_snapshot(now);
AudioTraceStats audio;
audio_trace_get_stats(&audio);
double fill_ms = 0.0, target_ms = 0.0, correction = 0.0;
uint64_t underruns = 0, overflows = 0;
int legacy = 0, host_rate = 0;
psx_audio_out_stats(&fill_ms, &target_ms, &underruns, &overflows, &correction,
&legacy, &host_rate);
(void)target_ms;
uint64_t up[6] = {0};
gl_renderer_runtime_diag(up);
uint64_t overlay_load_us = 0, overlay_load_max_us = 0, overlay_load_last_us = 0;
overlay_loader_get_load_timing(&overlay_load_us, &overlay_load_max_us,
&overlay_load_last_us);
if (!have_last) {
last = current;
last_spu = audio.tap_frames[AUDIO_TAP_SPU_OUT];
last_underruns = underruns;
last_overflows = overflows;
last_overlay_load_us = overlay_load_us;
for (int i = 0; i < 6; i++) last_up[i] = up[i];
have_last = true;
return;
}
const double dt = (double)(current.counter - last.counter) /
(double)g_runtime_perf.frequency;
std::fprintf(stdout,
"psxrecomp: runtime cadence: guest=%.2f Hz, spu=%.1f Hz, "
"audio_fill=%.1f ms, underruns=+%llu, overflows=+%llu, corr=%+.5f; "
"GL upload=%.1f calls/s %.1f rect/s %.2f Mpix/s, "
"cpu=%.1f tex=%.1f draw=%.1f ms/s; "
"work guest=%.1f pacer=%.1f autocapture=%.1f provider_poll=%.1f ms/s, "
"dirty=%.0f insn/s %.0f dispatch/s; "
"overlay native=+%llu interp=+%llu hot_native=0x%08X/+%llu "
"shadow=+%llu div=+%llu first_div=0x%08X "
"loads=+%u revalidations=+%u "
"load_wall=%.1f ms max=%.1f last=%.1f ms; "
"capture triggers=+%u overlays=+%d last_dispatch_delta=%llu\n",
(double)(current.frame - last.frame) / dt,
(double)(audio.tap_frames[AUDIO_TAP_SPU_OUT] - last_spu) / dt,
fill_ms, (unsigned long long)(underruns - last_underruns),
(unsigned long long)(overflows - last_overflows), correction,
(double)(up[0] - last_up[0]) / dt,
(double)(up[1] - last_up[1]) / dt,
(double)(up[2] - last_up[2]) / dt / 1.0e6,
(double)(up[3] - last_up[3]) * 1000.0 /
(double)g_runtime_perf.frequency / dt,
(double)(up[4] - last_up[4]) * 1000.0 /
(double)g_runtime_perf.frequency / dt,
(double)(up[5] - last_up[5]) * 1000.0 /
(double)g_runtime_perf.frequency / dt,
runtime_perf_ticks_ms(current.guest_work_ticks - last.guest_work_ticks) / dt,
runtime_perf_ticks_ms(current.pacer_ticks - last.pacer_ticks) / dt,
runtime_perf_ticks_ms(current.autocapture_ticks - last.autocapture_ticks) / dt,
runtime_perf_ticks_ms(current.provider_poll_ticks - last.provider_poll_ticks) / dt,
(double)(current.dirty_insns - last.dirty_insns) / dt,
(double)(current.dirty_dispatches - last.dirty_dispatches) / dt,
(unsigned long long)(current.overlay_native - last.overlay_native),
(unsigned long long)(current.overlay_interp - last.overlay_interp),
current.overlay_hot_native_pc,
(unsigned long long)current.overlay_hot_native_calls,
(unsigned long long)(current.overlay_shadow_calls - last.overlay_shadow_calls),
(unsigned long long)(current.overlay_shadow_divergences -
last.overlay_shadow_divergences),
current.overlay_first_divergence_pc,
current.overlay_loads - last.overlay_loads,
current.overlay_revalidations - last.overlay_revalidations,
(double)(overlay_load_us - last_overlay_load_us) / 1000.0,
(double)overlay_load_max_us / 1000.0,
(double)overlay_load_last_us / 1000.0,
current.capture_triggers - last.capture_triggers,
current.capture_overlays - last.capture_overlays,
(unsigned long long)current.capture_last_dispatch_delta);
std::fflush(stdout);
last = current;
last_spu = audio.tap_frames[AUDIO_TAP_SPU_OUT];
last_underruns = underruns;
last_overflows = overflows;
last_overlay_load_us = overlay_load_us;
for (int i = 0; i < 6; i++) last_up[i] = up[i];
}
static void sdl_audio_update(int hard_mute_active, int turbo_sink_active) {
if (!sdl_audio_device) return;
{ /* Tag audio events with the vblank frame counter. */
extern uint64_t s_frame_count;
audio_trace_note_frame((uint32_t)s_frame_count);
}
const int HANGOVER_FRAMES = 8; /* ~133 ms at 60 fps */
static int muted = 0;
static int hangover = 0;
static int sink_was_active = 0;
if (hard_mute_active) {
if (!muted) {
int tail = sdl_audio_fade_samples;
const int buf_cap = (int)(sizeof(sdl_audio_buf) / (2 * sizeof(int16_t)));
if (tail > buf_cap) tail = buf_cap;
/* An unmute ramp may still be in progress; start the down-ramp
* from its current gain so the edge stays continuous. */
const float g0 = 1.0f - (float)sdl_audio_fadein_left
/ (float)sdl_audio_fade_samples;
sdl_audio_fadein_left = 0;
spu_render(sdl_audio_buf, tail);
sdl_audio_gain_ramp(sdl_audio_buf, tail, g0, 0.0f);
audio_trace_event(AUDIO_EV_MUTE, (uint32_t)tail, 0);
if (audio_legacy_mode()) {
audio_trace_pcm(AUDIO_TAP_HOST, sdl_audio_buf, tail);
psx_sdl_audio_queue(sdl_audio_device, sdl_audio_buf, (uint32_t)tail * sizeof(int16_t) * 2u);
} else if (s_drc_ready) {
psx_sdl_audio_lock(sdl_audio_device);
rab_push(&s_drc, sdl_audio_buf, tail);
psx_sdl_audio_unlock(sdl_audio_device);
}
muted = 1;
}
hangover = HANGOVER_FRAMES;
return;
}
if (muted) {
if (hangover > 0) { hangover--; return; }
muted = 0;
sdl_audio_fadein_left = sdl_audio_fade_samples;
audio_trace_event(AUDIO_EV_UNMUTE, (uint32_t)sdl_audio_fadein_left, 0);
extern int g_audio_unmute_resync;
g_audio_unmute_resync = 1;
}
if (turbo_sink_active) {
if (!sink_was_active) {
sink_was_active = 1;
audio_trace_event(AUDIO_EV_MUTE, 0, 2); /* b=2: discard-only sink */
}
g_turbo_audio_sink_active = 1;
sdl_audio_pump(true);
return;
}
g_turbo_audio_sink_active = 0;
if (sink_was_active) {
sink_was_active = 0;
sdl_audio_fadein_left = sdl_audio_fade_samples;
audio_trace_event(AUDIO_EV_UNMUTE,
(uint32_t)sdl_audio_fadein_left, 2);
g_audio_unmute_resync = 1;
}
sdl_audio_pump(false);
}
/* PS1 digital pad button bits (active-low: 0=pressed, 1=released).
* Bit 0 = SELECT, Bit 1 = L3, Bit 2 = R3, Bit 3 = START,
* Bit 4 = UP, Bit 5 = RIGHT, Bit 6 = DOWN, Bit 7 = LEFT,
* Bit 8 = L2, Bit 9 = R2, Bit 10 = L1, Bit 11 = R1,
* Bit 12 = TRIANGLE, Bit 13 = CIRCLE, Bit 14 = CROSS, Bit 15 = SQUARE.
* L3/R3 (stick clicks) exist on a DualShock only; the wire reports them like
* Beetle's dualshock.cpp does — straight from the button word, no mode mask. */
#define PAD_SELECT (1 << 0)
#define PAD_L3 (1 << 1)
#define PAD_R3 (1 << 2)
#define PAD_START (1 << 3)
#define PAD_UP (1 << 4)
#define PAD_RIGHT (1 << 5)
#define PAD_DOWN (1 << 6)
#define PAD_LEFT (1 << 7)
#define PAD_L2 (1 << 8)
#define PAD_R2 (1 << 9)
#define PAD_L1 (1 << 10)
#define PAD_R1 (1 << 11)
#define PAD_TRIANGLE (1 << 12)
#define PAD_CIRCLE (1 << 13)
#define PAD_CROSS (1 << 14)
#define PAD_SQUARE (1 << 15)
struct ControllerSource {
enum class Kind {
None,
Button,
AxisPositive,
AxisNegative,
};
Kind kind = Kind::None;
int id = -1;
};
struct PsxButtonMap {
uint16_t bit; /* 0 = stick-direction slot (no digital bit alone) */
const char* ini_name;
std::vector<ControllerSource> sources;
/* When set, a pressed stick-direction source also contributes this d-pad
* bit in digital mode (ls_* -> Up/Down/Left/Right). */
uint16_t fold_bit = 0;
};
static int controller_device_index = 0;
/* Default ~10% of SDL axis range (32767). Overridden per-player via settings. */
static int controller_deadzone = 3277;
static constexpr int kDefaultDeadzoneRaw = 3277;
static constexpr int kControllerMapN = 24;
using ControllerMap = std::array<PsxButtonMap, kControllerMapN>;
static ControllerMap controller_map = {{
{ PAD_UP, "up", {}, 0 },
{ PAD_DOWN, "down", {}, 0 },
{ PAD_LEFT, "left", {}, 0 },
{ PAD_RIGHT, "right", {}, 0 },
{ PAD_CROSS, "cross", {}, 0 },
{ PAD_CIRCLE, "circle", {}, 0 },
{ PAD_SQUARE, "square", {}, 0 },
{ PAD_TRIANGLE, "triangle", {}, 0 },
{ PAD_L1, "l1", {}, 0 },
{ PAD_R1, "r1", {}, 0 },
{ PAD_L2, "l2", {}, 0 },
{ PAD_R2, "r2", {}, 0 },
{ PAD_L3, "l3", {}, 0 },
{ PAD_R3, "r3", {}, 0 },
{ PAD_START, "start", {}, 0 },
{ PAD_SELECT, "select", {}, 0 },
/* Stick directions (analog axes by default; fold onto d-pad digitally). */
{ 0, "ls_up", {}, PAD_UP },
{ 0, "ls_down", {}, PAD_DOWN },
{ 0, "ls_left", {}, PAD_LEFT },
{ 0, "ls_right", {}, PAD_RIGHT },
{ 0, "rs_up", {}, 0 },
{ 0, "rs_down", {}, 0 },
{ 0, "rs_left", {}, 0 },
{ 0, "rs_right", {}, 0 },
}};
/* Per-GUID overrides from input.ini [mapping.<guid>]. Absent GUID => global. */
static std::unordered_map<std::string, ControllerMap> controller_maps_by_guid;
static const ControllerMap& controller_map_for(const PlayerInput& p) {
if (p.guid[0]) {
auto it = controller_maps_by_guid.find(p.guid);
if (it != controller_maps_by_guid.end()) return it->second;
}
return controller_map;
}
static std::string trim_copy(const std::string& s) {
size_t first = 0;
while (first < s.size() && std::isspace((unsigned char)s[first])) first++;
size_t last = s.size();
while (last > first && std::isspace((unsigned char)s[last - 1])) last--;
return s.substr(first, last - first);
}
/* Resolve the durable additive overlay-capture store. Explicit process env is
* authoritative. For local development, parse only the two known capture keys
* from a gitignored root .psxrecomp.env (or .env); do not import unrelated
* variables/secrets into the game process. Relative paths are root-relative. */
static std::filesystem::path resolve_overlay_capture_path(
const std::filesystem::path& project_root,
const std::filesystem::path& exe_dir,
const std::string& game_id) {
std::string direct;
std::string store_root;
std::filesystem::path value_base = project_root;
if (const char* e = std::getenv("PSX_OVERLAY_CAPTURES")) direct = e;
if (const char* e = std::getenv("PSX_OVERLAY_CAPTURE_ROOT")) store_root = e;
if (direct.empty() && store_root.empty()) {
std::vector<std::filesystem::path> configs = {
project_root / ".psxrecomp.env", project_root / ".env"
};
/* Framework developers commonly build a game whose config root is a
* sibling repository. Walk upward from the executable as well so the
* framework worktree's private config remains the durable authority. */
std::filesystem::path cur = exe_dir;
for (int i = 0; i < 8; ++i) {
configs.push_back(cur / ".psxrecomp.env");
const auto parent = cur.parent_path();
if (parent == cur) break;
cur = parent;
}
for (const auto& config : configs) {
std::ifstream in(config);
if (!in) continue;
std::string line;
while (std::getline(in, line)) {
line = trim_copy(line);
if (line.empty() || line[0] == '#') continue;
const size_t eq = line.find('=');
if (eq == std::string::npos) continue;
std::string key = trim_copy(line.substr(0, eq));
std::string value = trim_copy(line.substr(eq + 1));
if (value.size() >= 2 &&
((value.front() == '"' && value.back() == '"') ||
(value.front() == '\'' && value.back() == '\'')))
value = value.substr(1, value.size() - 2);
if (key == "PSX_OVERLAY_CAPTURES") {
direct = value;
value_base = config.parent_path();
} else if (key == "PSX_OVERLAY_CAPTURE_ROOT") {
store_root = value;
value_base = config.parent_path();
}
}
if (!direct.empty() || !store_root.empty()) break;
}
}
auto root_relative = [&](const std::string& raw) {
std::filesystem::path p(raw);
return p.is_absolute() ? p : value_base / p;
};
std::filesystem::path result;
if (!direct.empty()) result = root_relative(direct);
else if (!store_root.empty())
result = root_relative(store_root) / game_id / "overlay_captures.json";
else result = exe_dir / "overlay_captures.json";
std::error_code ec;
std::filesystem::create_directories(result.parent_path(), ec);
if (ec) {
std::fprintf(stderr, "psxrecomp: cannot create overlay capture store %s: %s\n",
result.parent_path().string().c_str(), ec.message().c_str());
return exe_dir / "overlay_captures.json";
}
return result.lexically_normal();
}
static std::string lower_copy(std::string s) {
std::transform(s.begin(), s.end(), s.begin(),
[](unsigned char c) { return (char)std::tolower(c); });
return s;
}
static bool parse_bool_value(const std::string& value, bool fallback) {
std::string v = lower_copy(trim_copy(value));
if (v == "1" || v == "true" || v == "yes" || v == "on") return true;
if (v == "0" || v == "false" || v == "no" || v == "off") return false;
return fallback;
}
static ControllerSource parse_controller_source(const std::string& raw) {
std::string s = lower_copy(trim_copy(raw));
ControllerSource out;
if (s.empty() || s == "none" || s == "disabled") return out;
if (s == "a") { out.kind = ControllerSource::Kind::Button; out.id = SDL_CONTROLLER_BUTTON_A; return out; }
if (s == "b") { out.kind = ControllerSource::Kind::Button; out.id = SDL_CONTROLLER_BUTTON_B; return out; }
if (s == "x") { out.kind = ControllerSource::Kind::Button; out.id = SDL_CONTROLLER_BUTTON_X; return out; }
if (s == "y") { out.kind = ControllerSource::Kind::Button; out.id = SDL_CONTROLLER_BUTTON_Y; return out; }
if (s == "back" || s == "view" || s == "select") {
out.kind = ControllerSource::Kind::Button; out.id = SDL_CONTROLLER_BUTTON_BACK; return out;
}
if (s == "start" || s == "menu") {
out.kind = ControllerSource::Kind::Button; out.id = SDL_CONTROLLER_BUTTON_START; return out;
}
if (s == "guide") { out.kind = ControllerSource::Kind::Button; out.id = SDL_CONTROLLER_BUTTON_GUIDE; return out; }
if (s == "leftstick") { out.kind = ControllerSource::Kind::Button; out.id = SDL_CONTROLLER_BUTTON_LEFTSTICK; return out; }
if (s == "rightstick") { out.kind = ControllerSource::Kind::Button; out.id = SDL_CONTROLLER_BUTTON_RIGHTSTICK; return out; }
if (s == "leftshoulder" || s == "lb" || s == "l1") {
out.kind = ControllerSource::Kind::Button; out.id = SDL_CONTROLLER_BUTTON_LEFTSHOULDER; return out;
}
if (s == "rightshoulder" || s == "rb" || s == "r1") {
out.kind = ControllerSource::Kind::Button; out.id = SDL_CONTROLLER_BUTTON_RIGHTSHOULDER; return out;
}
if (s == "dpup" || s == "dpadup") {
out.kind = ControllerSource::Kind::Button; out.id = SDL_CONTROLLER_BUTTON_DPAD_UP; return out;
}
if (s == "dpdown" || s == "dpaddown") {
out.kind = ControllerSource::Kind::Button; out.id = SDL_CONTROLLER_BUTTON_DPAD_DOWN; return out;
}
if (s == "dpleft" || s == "dpadleft") {
out.kind = ControllerSource::Kind::Button; out.id = SDL_CONTROLLER_BUTTON_DPAD_LEFT; return out;
}
if (s == "dpright" || s == "dpadright") {
out.kind = ControllerSource::Kind::Button; out.id = SDL_CONTROLLER_BUTTON_DPAD_RIGHT; return out;
}
if (s == "lefttrigger" || s == "lt" || s == "l2") {
out.kind = ControllerSource::Kind::AxisPositive; out.id = SDL_CONTROLLER_AXIS_TRIGGERLEFT; return out;
}
if (s == "righttrigger" || s == "rt" || s == "r2") {
out.kind = ControllerSource::Kind::AxisPositive; out.id = SDL_CONTROLLER_AXIS_TRIGGERRIGHT; return out;
}
if (s == "leftx+" || s == "lsright") {
out.kind = ControllerSource::Kind::AxisPositive; out.id = SDL_CONTROLLER_AXIS_LEFTX; return out;
}
if (s == "leftx-" || s == "lsleft") {
out.kind = ControllerSource::Kind::AxisNegative; out.id = SDL_CONTROLLER_AXIS_LEFTX; return out;
}
if (s == "lefty+" || s == "lsdown") {
out.kind = ControllerSource::Kind::AxisPositive; out.id = SDL_CONTROLLER_AXIS_LEFTY; return out;
}
if (s == "lefty-" || s == "lsup") {
out.kind = ControllerSource::Kind::AxisNegative; out.id = SDL_CONTROLLER_AXIS_LEFTY; return out;
}
if (s == "rightx+" || s == "rsright") {
out.kind = ControllerSource::Kind::AxisPositive; out.id = SDL_CONTROLLER_AXIS_RIGHTX; return out;
}
if (s == "rightx-" || s == "rsleft") {
out.kind = ControllerSource::Kind::AxisNegative; out.id = SDL_CONTROLLER_AXIS_RIGHTX; return out;
}
if (s == "righty+" || s == "rsdown") {
out.kind = ControllerSource::Kind::AxisPositive; out.id = SDL_CONTROLLER_AXIS_RIGHTY; return out;
}
if (s == "righty-" || s == "rsup") {
out.kind = ControllerSource::Kind::AxisNegative; out.id = SDL_CONTROLLER_AXIS_RIGHTY; return out;
}
SDL_GameControllerButton button = SDL_GameControllerGetButtonFromString(s.c_str());
if (button != SDL_CONTROLLER_BUTTON_INVALID) {
out.kind = ControllerSource::Kind::Button;
out.id = button;
return out;
}
SDL_GameControllerAxis axis = SDL_GameControllerGetAxisFromString(s.c_str());
if (axis != SDL_CONTROLLER_AXIS_INVALID) {
out.kind = ControllerSource::Kind::AxisPositive;
out.id = axis;
return out;
}
return out;
}
static std::vector<ControllerSource> parse_source_list(const std::string& value) {
std::vector<ControllerSource> sources;
std::stringstream ss(value);
std::string item;
while (std::getline(ss, item, ',')) {
ControllerSource source = parse_controller_source(item);
if (source.kind != ControllerSource::Kind::None) {
sources.push_back(source);
}
}
return sources;
}
static void apply_sources_to_map(ControllerMap& map, const char* name,
const char* sources) {
for (auto& entry : map) {
if (std::strcmp(entry.ini_name, name) == 0) {
entry.sources = parse_source_list(sources);
return;
}
}
}
static void set_default_controller_mapping_into(ControllerMap& map) {
for (auto& entry : map) entry.sources.clear();
/* D-pad and sticks are separate (launcher Gamepad Bindings layout). Digital
* mode still folds ls_* onto d-pad bits via fold_bit. */
apply_sources_to_map(map, "up", "dpup");
apply_sources_to_map(map, "down", "dpdown");
apply_sources_to_map(map, "left", "dpleft");
apply_sources_to_map(map, "right", "dpright");
apply_sources_to_map(map, "cross", "a");
apply_sources_to_map(map, "circle", "b");
apply_sources_to_map(map, "square", "x");
apply_sources_to_map(map, "triangle", "y");
apply_sources_to_map(map, "l1", "leftshoulder");
apply_sources_to_map(map, "r1", "rightshoulder");
apply_sources_to_map(map, "l2", "lefttrigger");
apply_sources_to_map(map, "r2", "righttrigger");
apply_sources_to_map(map, "l3", "leftstick");
apply_sources_to_map(map, "r3", "rightstick");
apply_sources_to_map(map, "start", "start");
apply_sources_to_map(map, "select", "back");
apply_sources_to_map(map, "ls_up", "lefty-");
apply_sources_to_map(map, "ls_down", "lefty+");
apply_sources_to_map(map, "ls_left", "leftx-");
apply_sources_to_map(map, "ls_right", "leftx+");
apply_sources_to_map(map, "rs_up", "righty-");
apply_sources_to_map(map, "rs_down", "righty+");
apply_sources_to_map(map, "rs_left", "rightx-");
apply_sources_to_map(map, "rs_right", "rightx+");
}
static void set_default_controller_mapping(void) {
set_default_controller_mapping_into(controller_map);
controller_maps_by_guid.clear();
}
static std::string default_input_ini_text(void) {
return
"; PSXRecomp input mapping. PSX buttons are active when any listed source is pressed.\n"
"; Sources use SDL/Xbox names: a,b,x,y,back,start,leftshoulder,rightshoulder,\n"
"; lefttrigger,righttrigger,leftstick,rightstick (stick clicks -> L3/R3),\n"
"; dpup,dpdown,dpleft,dpright,leftx-/leftx+/lefty-/lefty+.\n"
"; Optional per-device overrides: [mapping.<sdl-guid>].\n"
"\n"
"[controller]\n"
"enabled = true\n"
"device = 0\n"
"deadzone = 3277\n"
"\n"
"[mapping]\n"
"up = dpup\n"
"down = dpdown\n"
"left = dpleft\n"
"right = dpright\n"
"cross = a\n"
"circle = b\n"
"square = x\n"
"triangle = y\n"
"l1 = leftshoulder\n"
"r1 = rightshoulder\n"
"l2 = lefttrigger\n"
"r2 = righttrigger\n"
"l3 = leftstick\n"
"r3 = rightstick\n"
"start = start\n"
"select = back\n"
"ls_up = lefty-\n"
"ls_down = lefty+\n"
"ls_left = leftx-\n"
"ls_right = leftx+\n"
"rs_up = righty-\n"
"rs_down = righty+\n"
"rs_left = rightx-\n"
"rs_right = rightx+\n";
}
static void load_input_config(const char* argv0) {
set_default_controller_mapping();
namespace fs = std::filesystem;
fs::path config_path = exe_dir_from_argv(argv0) / "input.ini";
std::error_code ec;
if (!fs::exists(config_path, ec)) {
std::ofstream out(config_path, std::ios::binary);
if (out) out << default_input_ini_text();
psx_keybinds_init(argv0);
return;
}
std::ifstream in(config_path);
if (!in) {
psx_keybinds_init(argv0);
return;
}
bool controller_enabled = true;
std::string section;
std::string line;
ControllerMap* guid_target = nullptr;
while (std::getline(in, line)) {
size_t comment = line.find_first_of(";#");
if (comment != std::string::npos) line.resize(comment);
line = trim_copy(line);
if (line.empty()) continue;
if (line.front() == '[' && line.back() == ']') {
section = lower_copy(trim_copy(line.substr(1, line.size() - 2)));
guid_target = nullptr;
if (section.rfind("mapping.", 0) == 0) {
const std::string guid = section.substr(8);
if (!guid.empty()) {
/* Seed from the current global map (defaults + any
* [mapping] keys already parsed), then overlay GUID keys. */
if (!controller_maps_by_guid.count(guid))
controller_maps_by_guid[guid] = controller_map;
guid_target = &controller_maps_by_guid[guid];
}
}
continue;
}
size_t eq = line.find('=');
if (eq == std::string::npos) continue;
std::string key = lower_copy(trim_copy(line.substr(0, eq)));
std::string value = trim_copy(line.substr(eq + 1));
if (section == "controller") {
if (key == "enabled") {
controller_enabled = parse_bool_value(value, controller_enabled);
} else if (key == "device") {
controller_device_index = std::max(0, std::atoi(value.c_str()));
} else if (key == "deadzone") {
controller_deadzone = std::max(0, std::min(32767, std::atoi(value.c_str())));
}
} else if (section == "mapping") {
for (auto& entry : controller_map) {
if (key == entry.ini_name) {
entry.sources = parse_source_list(value);
break;
}
}
} else if (guid_target) {
for (auto& entry : *guid_target) {
if (key == entry.ini_name) {
entry.sources = parse_source_list(value);
break;
}
}
}
}
if (!controller_enabled) {
for (auto& entry : controller_map) entry.sources.clear();
for (auto& kv : controller_maps_by_guid)
for (auto& entry : kv.second) entry.sources.clear();
}
/* Configurable KEYBOARD keybinds (keybinds.ini, next to the exe) — separate
* from input.ini's gamepad map. Loads the user's map (or writes defaults on
* first run). The launcher may have just edited+saved this file; we re-read
* it here so the runtime always reflects the current bindings. */
psx_keybinds_init(argv0);
}
static void close_player(PlayerInput& p) {
if (p.handle) {
SDL_GameControllerClose(p.handle);
p.handle = nullptr;
p.instance = -1;
}
}
static void close_controller(void) {
for (int s = 0; s < PSX_MAX_PLAYERS; s++)
close_player(g_players[s]);
}
static int device_claimed_by_other(int self_slot, SDL_JoystickID inst) {
for (int o = 0; o < PSX_MAX_PLAYERS; o++) {
if (o == self_slot) continue;
if (g_players[o].handle && g_players[o].instance == inst) return 1;
}
return 0;
}
/* Open the SDL controller whose GUID matches p.guid. If no exact GUID match
* exists (e.g. a different physical unit of the same model, or Steam's virtual
* pad at an unpredictable slot), fall back to the first controller not already
* claimed by another player. */
static void open_player(PlayerInput& p, int self_slot) {
if (p.kind != 2 || p.handle) return;
int chosen = -1, fallback = -1;
const int joysticks = SDL_NumJoysticks();
for (int i = 0; i < joysticks; i++) {
if (!SDL_IsGameController(i)) continue;
SDL_JoystickGUID g = SDL_JoystickGetDeviceGUID(i);
char buf[40] = {0};
SDL_JoystickGetGUIDString(g, buf, sizeof(buf));
/* Skip a device already opened by another player. */
SDL_JoystickID inst = SDL_JoystickGetDeviceInstanceID(i);
if (device_claimed_by_other(self_slot, inst)) continue;
if (p.guid[0] && std::strcmp(buf, p.guid) == 0) { chosen = i; break; }
if (fallback < 0) fallback = i;
}
if (chosen < 0) chosen = fallback;
if (chosen < 0) return;
p.handle = SDL_GameControllerOpen(chosen);
if (p.handle) {
SDL_Joystick* joy = SDL_GameControllerGetJoystick(p.handle);
p.instance = joy ? SDL_JoystickInstanceID(joy) : -1;
/* Persist the GUID of the pad we actually opened so per-device
* [mapping.<guid>] lookups match the live hardware (including the
* first-available fallback when the saved GUID is offline). */
{
SDL_JoystickGUID g = SDL_JoystickGetDeviceGUID(chosen);
SDL_JoystickGetGUIDString(g, p.guid, (int)sizeof(p.guid));
}
const char* name = SDL_GameControllerName(p.handle);
std::fprintf(stdout, "psxrecomp runtime: opened controller for slot: %s\n",
name ? name : "(unnamed)");
}
}
/* The pad type a mode reports before any input has been sampled (boot /
* hotplug). analog pins DualShock; digital and hybrid both start as a digital
* pad (hybrid only flips to DualShock once the player nudges the stick). */
static int pad_mode_boot_analog(int mode) {
/* Hybrid boots ANALOG-on (matches a DualShock powered up with the analog LED
* lit): the seamless auto-switch then drops to digital only if the player
* reaches for the d-pad. Pinned-analog also boots analog; digital boots off. */
return (mode == PSXRecompV4::PAD_MODE_ANALOG ||
mode == PSXRecompV4::PAD_MODE_HYBRID) ? 1 : 0;
}
/* Keyboard has no DualShock sticks/config handshake — always present as a
* plain digital pad (SCPH-1080). Leaving keyboard slots in ANALOG/HYBRID made
* P2–P5 show as connected while games that expect digital multitap pads never
* saw usable button input. */
static int effective_player_mode(const PlayerInput& p) {
if (p.kind == 1) return (int)PSXRecompV4::PAD_MODE_DIGITAL;
return p.mode;
}
/* Pad mode for the SIO seat this sample will drive. Multitap taps are always
* plain digital (0x41) — DualShock on a SCPH-1070 tap is not reliable. */
static int effective_player_mode_for_sio(const PlayerInput& p, int sio_slot) {
if (sio_pad_on_multitap(sio_slot))
return (int)PSXRecompV4::PAD_MODE_DIGITAL;
return effective_player_mode(p);
}
/* Open/close SDL handles so they match g_players, and (re)assert each slot's
* PSX connection + pad type. Safe to call repeatedly (hotplug, boot).
* While delay-sync netplay is active, SIO connection/type are owned by
* psx_netplay (session slots stay plugged); only refresh host SDL handles. */
static void refresh_player_devices(void) {
const int netplay = psx_netplay_active();
for (int s = 0; s < PSX_MAX_PLAYERS; s++) {
PlayerInput& p = g_players[s];
if (p.kind != 2) close_player(p); /* keyboard/none: no handle */
else open_player(p, s);
if (netplay) continue;
const int mode = effective_player_mode_for_sio(p, s);
sio_set_pad_connected(s, p.kind != 0 ? 1 : 0);
sio_set_pad_analog(s, pad_mode_boot_analog(mode), 0x80, 0x80, 0x80, 0x80);
/* DIGITAL mode == a plain digital controller that ignores the DualShock
* config-mode commands (real SCPH-1080 behaviour); ANALOG/HYBRID == a
* config-capable DualShock. A digital pad that wrongly answered 0x43
* sent Tomba 2's pad driver down the config path -> phantom 0x00 reads.
* Multitap taps are always digital (see sio_pad_on_multitap). */
sio_set_pad_config_capable(s, mode != PSXRecompV4::PAD_MODE_DIGITAL);
}
}
/* Parse a [controller] device string into a player slot:
* "none" -> no pad; "keyboard" -> keyboard map; otherwise an SDL GUID. */
static void set_player_device(PlayerInput& p, const std::string& dev, int mode) {
p.mode = mode;
/* Hybrid starts in ANALOG (analog LED on); the auto-switch drops to digital
* only when the player uses the d-pad. */
p.hybrid_analog = true;
p.guid[0] = '\0';
std::string d = lower_copy(trim_copy(dev));
if (d.empty() || d == "none") { p.kind = 0; }
else if (d == "keyboard") { p.kind = 1; }
else if (d == "auto" || d == "gamepad" || d == "controller") {
/* First available SDL game controller (guid empty -> open_player falls
* back to the first connected pad). Lets a user default to "my
* controller" without pinning a specific GUID. */
p.kind = 2; /* p.guid already cleared above */
}
else {
p.kind = 2;
std::snprintf(p.guid, sizeof(p.guid), "%s", trim_copy(dev).c_str());
}
}
/* Stick→button (Digital D-Pad fold): per-axis deadzone. A strong left/right
* push with a few units of Y drift must NOT fire Up/Down (jump/crouch). Pure
* radial+sign did that — once mag cleared the circle, every non-zero axis
* component became a D-Pad bit. Analog stick bytes still use radial rescale
* in axes_to_pad_pair; this path is digital buttons only. Triggers share the
* same per-axis threshold. */
static bool controller_source_pressed_h(SDL_GameController* h, const ControllerSource& source,
int deadzone_raw) {
if (!h) return false;
const int dz = deadzone_raw > 0 ? deadzone_raw : controller_deadzone;
switch (source.kind) {
case ControllerSource::Kind::Button:
return SDL_GameControllerGetButton(
h, (SDL_GameControllerButton)source.id) != 0;
case ControllerSource::Kind::AxisPositive:
case ControllerSource::Kind::AxisNegative: {
const int16_t v = SDL_GameControllerGetAxis(h, (SDL_GameControllerAxis)source.id);
if (source.kind == ControllerSource::Kind::AxisPositive)
return v > dz;
return v < -dz;
}
case ControllerSource::Kind::None:
default:
return false;
}
}
/* Keyboard -> PSX button word for `player` (1 or 2), via the configurable
* keybinds.ini map (psx_keybinds). Defaults reproduce the old hardcoded layout
* (arrows=d-pad, X/S/Z/A=Cross/Circle/Square/Triangle, Q/W/E/R=L1/R1/L2/R2,
* Return=Start, RShift=Select) plus T/Y=L3/R3 stick clicks. */
static uint16_t pad_from_keyboard(int player) {
const Uint8* keys = SDL_GetKeyboardState(NULL);
return psx_keybinds_pad_word(keys, player);
}
/* A left/right ANALOG-STICK axis source (LEFTX/LEFTY/RIGHTX/RIGHTY), as opposed
* to a trigger axis (L2/R2) or a button. The default map folds the left stick
* onto the D-pad bits (up=dpup,lefty- … right=dpright,leftx+) so the stick works
* as a D-pad for DIGITAL games. In ANALOG mode that fold is WRONG: the stick
* already drives the analog axes, and on a real DualShock the stick and D-pad
* are independent — so a dual-analog game that uses the D-pad as its own control
* (e.g. Ape Escape's camera rotate) would see phantom D-pad presses from every
* stick movement, and constant rotation from centre drift. controller_pad_buttons
* suppresses these sources when the pad presents as analog. Trigger axes and
* button sources are never suppressed. */
static bool source_is_stick_axis(const ControllerSource& s) {
if (s.kind != ControllerSource::Kind::AxisPositive &&
s.kind != ControllerSource::Kind::AxisNegative) return false;
return s.id == SDL_CONTROLLER_AXIS_LEFTX || s.id == SDL_CONTROLLER_AXIS_LEFTY ||
s.id == SDL_CONTROLLER_AXIS_RIGHTX || s.id == SDL_CONTROLLER_AXIS_RIGHTY;
}
/* Build the active-low PSX button word from a controller's input.ini map. When
* suppress_stick_axes is set (the pad is presenting as analog this frame), the
* left/right analog-stick axes do NOT contribute button bits — see
* source_is_stick_axis above. Digital mode passes false, so ls_* stick
* directions still fold onto the D-pad via fold_bit. */
static uint16_t controller_pad_buttons(const ControllerMap& map,
SDL_GameController* h,
bool suppress_stick_axes,
int deadzone_raw) {
uint16_t buttons = 0xFFFF; /* all released */
if (!h) return buttons;
for (const auto& entry : map) {
for (const auto& source : entry.sources) {
if (suppress_stick_axes && source_is_stick_axis(source)) continue;
if (!controller_source_pressed_h(h, source, deadzone_raw)) continue;
if (entry.bit)
buttons &= (uint16_t)~entry.bit;
if (entry.fold_bit && !suppress_stick_axes)
buttons &= (uint16_t)~entry.fold_bit;
break;
}
}
return buttons;
}
/* Radial deadzone: process a stick's X and Y together so the dead region is a
* small CIRCLE, not a per-axis square. Travel within controller_deadzone reads
* centred (0x80/0x80); beyond it the vector MAGNITUDE is rescaled to the full
* range along the stick's true direction, so diagonals are preserved (a
* per-axis deadzone snaps diagonals toward the cardinals and feels notchy —
* bad for directional analog like Ape Escape's net swing). The magnitude is
* capped at 32767 before rescale so a full-diagonal push (raw mag ~46341) maps
* to ~0x9E/0x9E per axis — the circular gate a real DualShock stick reports,
* not 0xFF/0xFF. At dz==0 it reduces to a plain magnitude-preserving map. */
static void axes_to_pad_pair(int16_t vx, int16_t vy, uint8_t* obx, uint8_t* oby,
int deadzone_raw) {
const double dz = (double)(deadzone_raw > 0 ? deadzone_raw : controller_deadzone);
double x = vx, y = vy;
double mag = std::sqrt(x * x + y * y); /* 0 .. ~46341 */
if (mag <= dz || mag <= 0.0) { *obx = 0x80; *oby = 0x80; return; }
double capped = mag > 32767.0 ? 32767.0 : mag;
double range = 32767.0 - dz;
if (range < 1.0) range = 1.0;
double newmag = (capped - dz) * 32767.0 / range; /* 0 .. 32767 */
double scale = newmag / mag; /* along true direction */
int sx = (int)std::lround(x * scale);
int sy = (int)std::lround(y * scale);
if (sx > 32767) sx = 32767; else if (sx < -32768) sx = -32768;
if (sy > 32767) sy = 32767; else if (sy < -32768) sy = -32768;
int bx = (sx + 32768) >> 8;
int by = (sy + 32768) >> 8;
*obx = (uint8_t)(bx < 0 ? 0 : (bx > 255 ? 255 : bx));
*oby = (uint8_t)(by < 0 ? 0 : (by > 255 ? 255 : by));
}
/* Buttons for a player's selected device (0xFFFF = none pressed). `player` is
* 1..5 — selects which keybinds.ini section drives a keyboard port. */
static uint16_t pad_buttons_for(const PlayerInput& p, int player, bool suppress_stick_axes) {
if (p.kind == 1) return pad_from_keyboard(player);
if (p.kind == 2)
return controller_pad_buttons(controller_map_for(p), p.handle,
suppress_stick_axes, p.deadzone);
return 0xFFFF;
}
/* Analog stick bytes (lx,ly,rx,ry) for a player; centred if no live source.
*
* The host left stick maps to the LEFT analog axes (variable). When fold_dpad
* is set, the physical D-pad (and, for a keyboard player, the arrow keys) is
* ALSO folded onto the left axes at full deflection, so an analog-mode game
* whose movement reads only the stick magnitude (e.g. Tomba) still responds to
* the D-pad/keyboard — the faithful "seamless" behaviour: the stick gives
* variable speed, the D-pad gives full speed, both at once. Only the PHYSICAL
* D-pad is folded in (not the stick->d-pad button mapping), so the stick keeps
* its true variable magnitude. fold_dpad is false in HYBRID mode (there the
* D-pad instead flips the pad to digital, so the game runs its own d-pad path)
* and true in pinned-ANALOG mode. The keyboard branch always folds the arrows
* — they are that player's only stick source. */
static void pad_sticks_for(const PlayerInput& p, int player, uint8_t out[4], bool fold_dpad) {
out[0] = out[1] = out[2] = out[3] = 0x80;
if (p.kind == 1) {
/* Keyboard analog: the configurable left/right stick-direction binds
* (default = arrow keys on the LEFT stick; RIGHT stick unbound), so the
* old keyboard analog behaviour is preserved unless the user rebinds. */
const Uint8* keys = SDL_GetKeyboardState(NULL);
psx_keybinds_sticks(keys, player, out);
return;
}
if (p.kind == 2 && p.handle) {
const ControllerMap& map = controller_map_for(p);
auto find_entry = [&](const char* name) -> const PsxButtonMap* {
for (const auto& e : map)
if (std::strcmp(e.ini_name, name) == 0) return &e;
return nullptr;
};
/* Default left/right stick axis layout → smooth radial deadzone path.
* Any remapped stick direction falls back to discrete full deflection. */
auto sticks_default_axes = [&](const char* up, const char* down,
const char* left, const char* right,
SDL_GameControllerAxis ax,
SDL_GameControllerAxis ay) -> bool {
auto is_axis = [&](const char* n, int axis_id, ControllerSource::Kind k) {
const PsxButtonMap* e = find_entry(n);
if (!e || e->sources.size() != 1) return false;
const auto& s = e->sources[0];
return s.kind == k && s.id == axis_id;
};
return is_axis(up, ay, ControllerSource::Kind::AxisNegative) &&
is_axis(down, ay, ControllerSource::Kind::AxisPositive) &&
is_axis(left, ax, ControllerSource::Kind::AxisNegative) &&
is_axis(right, ax, ControllerSource::Kind::AxisPositive);
};
auto apply_discrete_stick = [&](const char* up, const char* down,
const char* left, const char* right,
uint8_t* bx, uint8_t* by) {
*bx = *by = 0x80;
auto pressed = [&](const char* n) {
const PsxButtonMap* e = find_entry(n);
if (!e) return false;
for (const auto& s : e->sources)
if (controller_source_pressed_h(p.handle, s, p.deadzone))
return true;
return false;
};
if (pressed(left)) *bx = 0x00;
if (pressed(right)) *bx = 0xFF;
if (pressed(up)) *by = 0x00;
if (pressed(down)) *by = 0xFF;
};
if (sticks_default_axes("ls_up", "ls_down", "ls_left", "ls_right",
SDL_CONTROLLER_AXIS_LEFTX, SDL_CONTROLLER_AXIS_LEFTY)) {
axes_to_pad_pair(SDL_GameControllerGetAxis(p.handle, SDL_CONTROLLER_AXIS_LEFTX),
SDL_GameControllerGetAxis(p.handle, SDL_CONTROLLER_AXIS_LEFTY),
&out[0], &out[1], p.deadzone);
} else {
apply_discrete_stick("ls_up", "ls_down", "ls_left", "ls_right",
&out[0], &out[1]);
}
if (sticks_default_axes("rs_up", "rs_down", "rs_left", "rs_right",
SDL_CONTROLLER_AXIS_RIGHTX, SDL_CONTROLLER_AXIS_RIGHTY)) {
axes_to_pad_pair(SDL_GameControllerGetAxis(p.handle, SDL_CONTROLLER_AXIS_RIGHTX),
SDL_GameControllerGetAxis(p.handle, SDL_CONTROLLER_AXIS_RIGHTY),
&out[2], &out[3], p.deadzone);
} else {
apply_discrete_stick("rs_up", "rs_down", "rs_left", "rs_right",
&out[2], &out[3]);
}
if (fold_dpad) {
/* Fold physical D-pad (mapped "up"/etc. button sources that are
* d-pad buttons) — prefer the mapped sources over hardcoded buttons
* so a remapped d-pad still folds onto the left stick. */
auto dpad_pressed = [&](const char* n) {
const PsxButtonMap* e = find_entry(n);
if (!e) return false;
for (const auto& s : e->sources) {
if (source_is_stick_axis(s)) continue;
if (controller_source_pressed_h(p.handle, s, p.deadzone))
return true;
}
return false;
};
if (dpad_pressed("left")) out[0] = 0x00;
if (dpad_pressed("right")) out[0] = 0xFF;
if (dpad_pressed("up")) out[1] = 0x00;
if (dpad_pressed("down")) out[1] = 0xFF;
}
}
}
/* HYBRID-mode auto-switch detectors (mirror the DualShock analog LED toggling).
* hybrid_stick_active: the LEFT stick is outside the radial deadzone — the
* player has reached for analog. hybrid_dpad_active: any D-pad direction (or,
* for the keyboard, an arrow key) is held — the player wants classic digital.
* The keyboard has no analog stick, so a keyboard player stays digital. */
static bool hybrid_stick_active(const PlayerInput& p) {
if (p.kind != 2 || !p.handle) return false;
const double lx = SDL_GameControllerGetAxis(p.handle, SDL_CONTROLLER_AXIS_LEFTX);
const double ly = SDL_GameControllerGetAxis(p.handle, SDL_CONTROLLER_AXIS_LEFTY);
const double dz = (double)(p.deadzone > 0 ? p.deadzone : controller_deadzone);
return std::sqrt(lx * lx + ly * ly) > dz;
}
static bool hybrid_dpad_active(const PlayerInput& p, int player, bool kb_always) {
if (p.kind == 2 && p.handle) {
if (SDL_GameControllerGetButton(p.handle, SDL_CONTROLLER_BUTTON_DPAD_LEFT) ||
SDL_GameControllerGetButton(p.handle, SDL_CONTROLLER_BUTTON_DPAD_RIGHT) ||
SDL_GameControllerGetButton(p.handle, SDL_CONTROLLER_BUTTON_DPAD_UP) ||
SDL_GameControllerGetButton(p.handle, SDL_CONTROLLER_BUTTON_DPAD_DOWN))
return true;
}
if (p.kind == 1 || kb_always) {
const Uint8* keys = SDL_GetKeyboardState(NULL);
if (psx_keybinds_dpad_active(keys, player)) return true;
}
return false;
}
/* Sample each player's live device state into the matching SIO pad slot.
* override >= 0 forces port-1 buttons (debug-server input injection). Called
* once at cycle start (covers the turbo/FMV-skip paths that present nothing)
* and, when g_low_latency_input is set, AGAIN after the pacer wait so the next
* CPU frame reads near-fresh input instead of input ~one frame stale.
*
* HYBRID mode auto-switches DualShock<->digital from the most-recent input
* (stick -> analog, D-pad -> digital) so the game runs its own analog or
* digital input path exactly as on hardware (mirrors the inline block this
* helper was extracted from for the low-latency re-sample). */
/* Dev input mode: while enabled, Player 1 is driven by the keyboard AND EVERY
* connected game controller, all merged together (active-low AND) onto the P1 pad
* word — so a tester can navigate P1 from whatever is plugged in (keyboard, the
* launcher-assigned pad, or any other controller) with no reconfiguration. The P1
* pad TYPE is left unchanged: a launcher-assigned analog DualShock still presents
* as analog (so the game's analog input path / SIO handshake cadence is preserved
* exactly), and merged sources only contribute button/stick STATE, never a type
* downgrade.
*
* Default OFF: each player slot accepts input only from its launcher-assigned
* device (keyboard XOR that controller). Opt in with PSX_DEV_INPUT=1 for the
* old "any device drives P1" workflow. */
static bool dev_any_input_enabled() {
static int cached = -1;
if (cached < 0) {
const char* e = std::getenv("PSX_DEV_INPUT");
cached = (e && (e[0] == '1' || e[0] == 'y' || e[0] == 'Y' || e[0] == 't' || e[0] == 'T')) ? 1 : 0;
}
return cached != 0;
}
/* Merge (active-low AND) the button words of every connected game controller.
* Handles are resolved from SDL's already-open set when possible and opened once
* on first sight otherwise (kept open for the process lifetime; if a slot later
* closes a shared device this self-heals by reopening next frame). This does NOT
* disturb per-slot routing — SDL returns the same handle for an already-open
* device, so reads are shared and harmless. */
static uint16_t dev_all_controllers_buttons(bool suppress_stick_axes) {
uint16_t btn = 0xFFFF;
const int n = SDL_NumJoysticks();
for (int i = 0; i < n; i++) {
if (!SDL_IsGameController(i)) continue;
SDL_JoystickID inst = SDL_JoystickGetDeviceInstanceID(i);
SDL_GameController* h = SDL_GameControllerFromInstanceID(inst);
if (!h) h = SDL_GameControllerOpen(i); /* open once; SDL keeps it */
if (!h) continue;
PlayerInput tmp;
tmp.kind = 2;
{
SDL_JoystickGUID g = SDL_JoystickGetDeviceGUID(i);
SDL_JoystickGetGUIDString(g, tmp.guid, (int)sizeof(tmp.guid));
}
btn &= controller_pad_buttons(controller_map_for(tmp), h,
suppress_stick_axes, controller_deadzone);
}
return btn;
}
/* Fold the first live (non-neutral) left/right stick from ANY connected
* controller into st[] (lx,ly,rx,ry). Lets an analog-mode P1 steer from
* whatever pad is plugged in, not only the launcher-assigned one. Only axes
* that read past the deadzone override; a neutral pad leaves st[] untouched. */
static void dev_any_controller_sticks(uint8_t st[4]) {
const int n = SDL_NumJoysticks();
for (int i = 0; i < n; i++) {
if (!SDL_IsGameController(i)) continue;
SDL_JoystickID inst = SDL_JoystickGetDeviceInstanceID(i);
SDL_GameController* h = SDL_GameControllerFromInstanceID(inst);
if (!h) h = SDL_GameControllerOpen(i);
if (!h) continue;
uint8_t lx, ly, rx, ry;
axes_to_pad_pair(SDL_GameControllerGetAxis(h, SDL_CONTROLLER_AXIS_LEFTX),
SDL_GameControllerGetAxis(h, SDL_CONTROLLER_AXIS_LEFTY),
&lx, &ly, controller_deadzone);
axes_to_pad_pair(SDL_GameControllerGetAxis(h, SDL_CONTROLLER_AXIS_RIGHTX),
SDL_GameControllerGetAxis(h, SDL_CONTROLLER_AXIS_RIGHTY),
&rx, &ry, controller_deadzone);
if (lx != 0x80 || ly != 0x80) { st[0] = lx; st[1] = ly; }
if (rx != 0x80 || ry != 0x80) { st[2] = rx; st[3] = ry; }
}
}
/* Debug-server input injection: drive the SAME pad model as a physical
* device. The old path set only the button word and returned, which left the
* pad type/sticks at whatever the real device last was — a hybrid P1 stayed
* analog, so injected d-pad bits never moved games that read the stick in
* analog mode (menus reacted, walking didn't). Injected d-pad reads as d-pad
* activity (hybrid drops to digital), an injected stick override reads as
* stick activity (hybrid rises to analog), and the resolved type goes through
* the same coherent request channel as real sampling — never slammed mid-
* handshake (the v0.5.0 phantom-input lesson). */
static void apply_input_override_to_sio(int override_word) {
PlayerInput& p = g_players[0];
const uint16_t w = (uint16_t)override_word;
sio_set_pad_state_slot(0, w);
uint8_t st[4] = { 0x80, 0x80, 0x80, 0x80 };
int axes = 0;
#ifndef PSX_NO_DEBUG_TOOLS
axes = debug_server_get_axis_override(st);
#endif
const bool stick_live = axes != 0 && (st[0] != 0x80 || st[1] != 0x80 ||
st[2] != 0x80 || st[3] != 0x80);
const bool dpad_live = ((uint16_t)~w & 0x00F0u) != 0; /* up/right/down/left */
int mode;
if (p.kind != 0) mode = effective_player_mode(p);
else if (dev_any_input_enabled()) mode = (int)PSXRecompV4::PAD_MODE_HYBRID;
else mode = (int)PSXRecompV4::PAD_MODE_DIGITAL;
int eff_analog;
if (mode == (int)PSXRecompV4::PAD_MODE_DIGITAL) {
eff_analog = 0;
} else if (mode == (int)PSXRecompV4::PAD_MODE_ANALOG) {
eff_analog = 1;
} else { /* HYBRID: most-recent input source wins, like the real sampler */
if (stick_live) p.hybrid_analog = true;
else if (dpad_live) p.hybrid_analog = false;
eff_analog = p.hybrid_analog ? 1 : 0;
}
if (!eff_analog) { st[0] = st[1] = st[2] = st[3] = 0x80; }
sio_set_pad_sticks(0, st[0], st[1], st[2], st[3]);
sio_request_pad_type(0, eff_analog);
psx_selfcheck_note_pad(0, w, st[0], st[1], st[2], st[3],
(uint8_t)(eff_analog ? 1 : 0));
}
/* Capture one SIO slot's host pad into a netplay/local blob. Returns 1 if a
* device (or dev-any P1) is present; 0 leaves *out as released/disconnected. */
static int capture_pad_slot(int s, PsxNetPad* out) {
if (!out) return 0;
out->buttons = 0xFFFFu;
out->lx = out->ly = out->rx = out->ry = 0x80u;
out->analog = 0;
out->connected = 0;
PlayerInput& p = g_players[s];
const int player = s + 1; /* keybinds.ini section (1..5) */
/* Opt-in dev merge: P1 is driven by the keyboard AND every connected
* controller (PSX_DEV_INPUT=1). Default is strict per-slot routing. */
const bool dev_here = (dev_any_input_enabled() && s == 0);
if (p.kind == 0 && !dev_here) return 0; /* no device in this port */
/* Resolve the pad type this frame FIRST — the effective analog/digital
* state gates how the left stick is read for BOTH the button word and the
* analog axes below. An assigned device keeps its configured mode (a
* launcher-selected analog DualShock stays analog, so its input path / SIO
* handshake cadence is preserved exactly). Keyboard is always digital.
* Multitap taps are forced digital. A P1 with no assigned device but
* dev-any-input on presents as HYBRID. */
int mode;
if (sio_pad_on_multitap(s))
mode = (int)PSXRecompV4::PAD_MODE_DIGITAL;
else if (p.kind != 0) mode = effective_player_mode(p);
else if (dev_here) mode = (int)PSXRecompV4::PAD_MODE_HYBRID;
else mode = (int)PSXRecompV4::PAD_MODE_DIGITAL;
int eff_analog;
if (mode == PSXRecompV4::PAD_MODE_DIGITAL) {
eff_analog = 0;
} else if (mode == PSXRecompV4::PAD_MODE_ANALOG) {
eff_analog = 1;
} else { /* HYBRID */
if (hybrid_stick_active(p)) p.hybrid_analog = true;
else if (hybrid_dpad_active(p, player, dev_here)) p.hybrid_analog = false;
eff_analog = p.hybrid_analog ? 1 : 0;
}
/* Buttons: merge the assigned device with the keyboard (PSX pad word is
* active-low, so AND combines "pressed on either source"). In dev mode P1
* also folds in the keyboard binds and EVERY connected controller. When the
* pad presents as ANALOG this frame (eff_analog), the left/right analog-
* stick axes are suppressed as button sources so the stick drives ONLY the
* analog axes — the D-pad bits then come solely from the physical D-pad,
* exactly as on a real DualShock. This is what stops a dual-analog game's
* D-pad control (Ape Escape's camera rotate) from being spun by stick
* movement or centre drift. Digital mode keeps the stick->D-pad fold. */
const bool suppress_stick = (eff_analog != 0);
uint16_t btn = (p.kind != 0) ? pad_buttons_for(p, player, suppress_stick)
: (uint16_t)0xFFFF;
if (dev_here) {
btn &= pad_from_keyboard(1); /* keyboard P1 binds */
btn &= dev_all_controllers_buttons(suppress_stick); /* any plugged-in pad */
}
/* Analog axes. Pinned-ANALOG folds the physical D-pad onto the left axes
* (fold_dpad) so the D-pad still moves stick-only games; HYBRID feeds the
* raw stick when currently analog (no fold — the D-pad drives its own
* digital path there); DIGITAL leaves the axes centred. */
uint8_t st[4] = { 0x80, 0x80, 0x80, 0x80 };
if (mode == PSXRecompV4::PAD_MODE_ANALOG) {
pad_sticks_for(p, player, st, /*fold_dpad=*/true);
} else if (eff_analog) { /* HYBRID, currently presenting analog */
pad_sticks_for(p, player, st, /*fold_dpad=*/false);
}
/* Dev mode: fold the keyboard's stick binds AND any connected controller's
* sticks onto the analog stick, so an analog-mode P1 steers from whatever
* is plugged in (P1 binds). */
if (dev_here && eff_analog) {
const Uint8* keys = SDL_GetKeyboardState(NULL);
psx_keybinds_sticks(keys, 1, st);
dev_any_controller_sticks(st);
}
out->buttons = btn;
out->lx = st[0]; out->ly = st[1]; out->rx = st[2]; out->ry = st[3];
out->analog = eff_analog ? 1u : 0u;
out->connected = 1;
return 1;
}
/* Netplay-only capture: assigned PlayerInput for this slot only. Never merges
* keyboard-all / all-controllers (dev_any_input). Same pad-mode / stick rules
* as capture_pad_slot otherwise. present_sio_slot is the delay-sync seat this
* blob will publish to (may differ from host card `s` on guests). */
static int capture_pad_slot_exclusive(int s, PsxNetPad* out, int present_sio_slot) {
if (!out) return 0;
out->buttons = 0xFFFFu;
out->lx = out->ly = out->rx = out->ry = 0x80u;
out->analog = 0;
out->connected = 0;
PlayerInput& p = g_players[s];
const int player = s + 1; /* keybinds.ini section (1..5) */
const bool dev_here = false;
if (p.kind == 0) return 0; /* no device in this port */
const int sio_slot = (present_sio_slot >= 0) ? present_sio_slot : s;
int mode = effective_player_mode_for_sio(p, sio_slot);
int eff_analog;
if (mode == PSXRecompV4::PAD_MODE_DIGITAL) {
eff_analog = 0;
} else if (mode == PSXRecompV4::PAD_MODE_ANALOG) {
eff_analog = 1;
} else { /* HYBRID */
if (hybrid_stick_active(p)) p.hybrid_analog = true;
else if (hybrid_dpad_active(p, player, dev_here)) p.hybrid_analog = false;
eff_analog = p.hybrid_analog ? 1 : 0;
}
const bool suppress_stick = (eff_analog != 0);
uint16_t btn = pad_buttons_for(p, player, suppress_stick);
uint8_t st[4] = { 0x80, 0x80, 0x80, 0x80 };
if (mode == PSXRecompV4::PAD_MODE_ANALOG) {
pad_sticks_for(p, player, st, /*fold_dpad=*/true);
} else if (eff_analog) { /* HYBRID, currently presenting analog */
pad_sticks_for(p, player, st, /*fold_dpad=*/false);
}
out->buttons = btn;
out->lx = st[0]; out->ly = st[1]; out->rx = st[2]; out->ry = st[3];
out->analog = eff_analog ? 1u : 0u;
out->connected = 1;
return 1;
}
static void apply_pad_slot_to_sio(int s, const PsxNetPad& pad) {
if (sio_pad_on_multitap(s))
sio_set_pad_config_capable(s, 0);
sio_set_pad_state_slot(s, pad.buttons);
sio_set_pad_sticks(s, pad.lx, pad.ly, pad.rx, pad.ry);
sio_request_pad_type(s, pad.analog ? 1 : 0);
/* Solo resim self-check records exactly what was applied this boundary. */
psx_selfcheck_note_pad(s, pad.buttons, pad.lx, pad.ly, pad.rx, pad.ry,
pad.analog);
}
/* Raw SDL Start face-button (ignores remaps) — pad-trace only. */
static int netplay_sdl_start_held(int card) {
if (card < 0 || card >= PSX_MAX_PLAYERS) return 0;
const PlayerInput& p = g_players[card];
if (p.kind == 2 && p.handle)
return SDL_GameControllerGetButton(p.handle, SDL_CONTROLLER_BUTTON_START) != 0;
if (p.kind == 1) {
/* Keyboard: Start bit in keybinds pad word (active-low clear = pressed). */
return (pad_from_keyboard(card + 1) & 0x0008u) == 0;
}
return 0;
}
/* Local human pad for delay-sync: sample the host PlayerInput selected for
* this peer (see --net-input-player / auto), then recomp-net maps that blob
* onto local_slot (lobby seat → sim P1/P2/…). Never writes SIO. Exclusive
* capture — no keyboard-all / all-controllers merge — so peers hash-agree. */
static void capture_local_human_pad(PsxNetPad* out) {
int idx = psx_netplay_input_player();
if (idx < 0 || idx >= PSX_MAX_PLAYERS) idx = 0;
/* Present as the lobby seat (multitap taps → digital), not the host card. */
const int seat = psx_netplay_local_slot();
const int present = (seat >= 0) ? seat : idx;
int card = idx;
int fallback = 0;
auto bisect_cap = [&](int c, int fb) {
if (!psx_start_bisect_enabled()) return;
const int sdl = netplay_sdl_start_held(c);
const int cap = ((uint16_t)(~out->buttons) & 0x0008u) != 0;
psx_start_bisect_log("cap", psx_netplay_sim_tick(), sdl, cap, -1, -1,
0, psx_netplay_rb_tip_holding(),
psx_netplay_is_resimulating());
(void)fb;
};
if (capture_pad_slot_exclusive(idx, out, present)) {
out->connected = 1;
psx_netplay_normalize_pad(out);
psx_netplay_pad_trace_dev(card, fallback, netplay_sdl_start_held(card),
out->buttons);
bisect_cap(card, fallback);
return;
}
/* Fallbacks: NETPLAY/P1 card, lobby seat card, then any assigned device. */
if (idx != 0 && capture_pad_slot_exclusive(0, out, present)) {
out->connected = 1;
psx_netplay_normalize_pad(out);
card = 0;
fallback = 1;
psx_netplay_pad_trace_dev(card, fallback, netplay_sdl_start_held(card),
out->buttons);
bisect_cap(card, fallback);
return;
}
if (seat >= 0 && seat < PSX_MAX_PLAYERS && seat != idx && seat != 0 &&
capture_pad_slot_exclusive(seat, out, present)) {
out->connected = 1;
psx_netplay_normalize_pad(out);
card = seat;
fallback = 1;
psx_netplay_pad_trace_dev(card, fallback, netplay_sdl_start_held(card),
out->buttons);
bisect_cap(card, fallback);
return;
}
for (int s = 0; s < PSX_MAX_PLAYERS; ++s) {
if (s == idx || s == 0 || s == seat) continue;
if (capture_pad_slot_exclusive(s, out, present)) {
out->connected = 1;
psx_netplay_normalize_pad(out);
card = s;
fallback = 1;
psx_netplay_pad_trace_dev(card, fallback, netplay_sdl_start_held(card),
out->buttons);
bisect_cap(card, fallback);
return;
}
}
out->buttons = 0xFFFFu;
out->lx = out->ly = out->rx = out->ry = 0x80u;
out->analog = 1;
out->connected = 1;
psx_netplay_normalize_pad(out);
psx_netplay_pad_trace_dev(idx, 1, netplay_sdl_start_held(idx), out->buttons);
bisect_cap(idx, 1);
}
/* Build a netplay pad blob from a debug-server override without writing SIO. */
static void capture_override_pad(int override_word, PsxNetPad* out) {
PlayerInput& p = g_players[0];
const uint16_t w = (uint16_t)override_word;
uint8_t st[4] = { 0x80, 0x80, 0x80, 0x80 };
int axes = 0;
#ifndef PSX_NO_DEBUG_TOOLS
axes = debug_server_get_axis_override(st);
#endif
const bool stick_live = axes != 0 && (st[0] != 0x80 || st[1] != 0x80 ||
st[2] != 0x80 || st[3] != 0x80);
const bool dpad_live = ((uint16_t)~w & 0x00F0u) != 0;
int mode;
if (p.kind != 0) mode = effective_player_mode(p);
else if (dev_any_input_enabled()) mode = (int)PSXRecompV4::PAD_MODE_HYBRID;
else mode = (int)PSXRecompV4::PAD_MODE_DIGITAL;
int eff_analog;
if (mode == (int)PSXRecompV4::PAD_MODE_DIGITAL) {
eff_analog = 0;
} else if (mode == (int)PSXRecompV4::PAD_MODE_ANALOG) {
eff_analog = 1;
} else {
if (stick_live) p.hybrid_analog = true;
else if (dpad_live) p.hybrid_analog = false;
eff_analog = p.hybrid_analog ? 1 : 0;
}
if (!eff_analog) { st[0] = st[1] = st[2] = st[3] = 0x80; }
out->buttons = w;
out->lx = st[0]; out->ly = st[1]; out->rx = st[2]; out->ry = st[3];
out->analog = eff_analog ? 1u : 0u;
out->connected = 1;
}
/* Opt-in netplay barrier split: guest quantum vs admit wait (PSX_NETPLAY_TIMING=1).
* Printed on the existing [FPS] line — no separate log files. */
static int s_np_timing_enabled = -1;
static uint64_t s_np_admit_ticks = 0;
static uint64_t s_np_guest_ticks = 0;
static uint64_t s_np_last_admit_end = 0;
static uint64_t s_np_timing_frames = 0;
/* §27: wall-clock gaps between successful presents (player-visible starvation). */
static uint64_t s_present_last_ms = 0;
static uint32_t s_present_gaps_ms[128];
static unsigned s_present_gaps_n = 0;
/* §74: highest sim tick ever shown on screen. Resim frames above it are new
* forward progress (treadmill chain) and present live; at/below is a rewound
* re-play and keeps §63 hold-last. Reset when a netplay session starts. */
static uint32_t s_netplay_present_sim_watermark = 0;
static int netplay_timing_on(void) {
if (s_np_timing_enabled < 0) {
const char *e = std::getenv("PSX_NETPLAY_TIMING");
s_np_timing_enabled = (e && e[0] && e[0] != '0') ? 1 : 0;
}
return s_np_timing_enabled;
}
static void netplay_note_present(void);
static void netplay_hold_last_present_tick(void);
static void netplay_note_present(void) {
uint64_t now;
uint32_t gap;
if (!psx_netplay_active() || !netplay_timing_on())
return;
now = SDL_GetTicks64();
if (s_present_last_ms != 0ull && now >= s_present_last_ms) {
gap = (uint32_t)(now - s_present_last_ms);
if (s_present_gaps_n < (unsigned)(sizeof(s_present_gaps_ms) / sizeof(s_present_gaps_ms[0])))
s_present_gaps_ms[s_present_gaps_n++] = gap;
}
s_present_last_ms = now ? now : 1ull;
}
static void netplay_present_gap_stats(uint32_t *p95_out, uint32_t *max_out) {
unsigned n = s_present_gaps_n;
unsigned idx;
if (p95_out) *p95_out = 0;
if (max_out) *max_out = 0;
if (n == 0)
return;
std::sort(s_present_gaps_ms, s_present_gaps_ms + n);
idx = (n > 1u) ? (unsigned)((95u * (n - 1u)) / 100u) : 0u;
if (p95_out) *p95_out = s_present_gaps_ms[idx];
if (max_out) *max_out = s_present_gaps_ms[n - 1u];
s_present_gaps_n = 0;
}
/* Stage local pad + poll admit until published. Parks the guest fiber when
* called from the vblank callback (or before scheduler entry). Latches one
* sample per sim tick; stalls on INPUT_CONFIRM desync. */
static void netplay_barrier_admit(int override) {
if (!psx_netplay_active()) return;
/* Launcher/game window teardown can leave a queued SDL_QUIT; draining it
* prevents an instant soft-return before the first frame. */
SDL_PumpEvents();
SDL_FlushEvent(SDL_QUIT);
static int desync_logged = 0;
const Uint64 barrier_t0 = SDL_GetTicks64();
Uint64 last_stall_log_ms = barrier_t0;
const uint64_t admit_t0 =
netplay_timing_on() ? SDL_GetPerformanceCounter() : 0;
/* Guest quantum = time since previous admit returned (fiber ran). */
if (admit_t0 && s_np_last_admit_end && admit_t0 >= s_np_last_admit_end) {
s_np_guest_ticks += admit_t0 - s_np_last_admit_end;
s_np_timing_frames++;
}
for (;;) {
uint32_t dt = 0, lh = 0, rh = 0;
const Uint64 now_ms = SDL_GetTicks64();
/* Load apply/ready suppresses INPUT (and can sit silent for seconds on
* a hash-match .pst). timeout=0 still honors BYE (peer_gone) but does
* not treat rx silence as disconnect — that was kicking both peers to
* the lobby mid-load. */
if (psx_netplay_peer_disconnected(
psx_netplay_in_load_barrier() ? 0u : 1500u)) {
netplay_soft_exit("netplay_peer_disconnect");
if (psx_return_to_lobby_requested()) return;
}
/* Staged .pst rejected (stale codegen / BIOS / missing) — do not wait
* out the 90s load barrier with stall=load_apply_done. */
if (psx_netplay_consume_load_apply_failed()) {
netplay_soft_exit("netplay_load_failed");
if (psx_return_to_lobby_requested()) return;
}
/* Mutual INPUT/CONFIRM stall still refreshes last_peer_rx — detect
* "no sim progress" separately (common rematch + TURN loss mode).
* Save/load/memcard probe+chunk xfer uses a longer budget (TURN +
* ~1.4MB .pst). The old 20s admit timeout killed SAVE mid-transfer. */
if (psx_netplay_in_load_barrier() && now_ms - barrier_t0 >= 90000u) {
char stall[96];
uint32_t sim = 0;
int lead = 0;
psx_netplay_admit_wait_info(stall, sizeof(stall), &sim, &lead);
std::fprintf(stderr,
"psxrecomp: netplay state barrier timeout sim=%u "
"stall=%s lead=%d — returning to lobby\n",
(unsigned)sim, stall[0] ? stall : "?", lead);
netplay_soft_exit("netplay_load_stall");
if (psx_return_to_lobby_requested()) return;
} else if (!psx_netplay_in_load_barrier() &&
now_ms - barrier_t0 >= 20000u) {
char stall[64];
uint32_t sim = 0;
int lead = 0;
psx_netplay_admit_wait_info(stall, sizeof(stall), &sim, &lead);
std::fprintf(stderr,
"psxrecomp: netplay admit stall timeout sim=%u "
"stall=%s lead=%d — returning to lobby\n",
(unsigned)sim, stall[0] ? stall : "?", lead);
netplay_soft_exit("netplay_admit_stall");
if (psx_return_to_lobby_requested()) return;
} else if (now_ms - last_stall_log_ms >= 2000u) {
char stall[96];
uint32_t sim = 0;
int lead = 0;
psx_netplay_admit_wait_info(stall, sizeof(stall), &sim, &lead);
std::fprintf(stderr,
"psxrecomp: netplay admit waiting sim=%u stall=%s "
"lead=%d (%llums)\n",
(unsigned)sim, stall[0] ? stall : "?", lead,
(unsigned long long)(now_ms - barrier_t0));
last_stall_log_ms = now_ms;
}
psx_lobby_pump();
if (psx_netplay_input_desync(&dt, &lh, &rh)) {
if (!desync_logged) {
std::printf("psxrecomp: netplay INPUT desync tick=%u local=%08x remote=%08x — stalled\n",
(unsigned)dt, (unsigned)lh, (unsigned)rh);
std::fflush(stdout);
desync_logged = 1;
}
SDL_Delay(16);
#ifndef PSX_NO_DEBUG_TOOLS
debug_server_poll();
#endif
continue;
}
/* §36: TipHold parks sim, so needs_local_sample stays 0 after latch.
* Still capture every spin so live_pad_buttons can see a real release
* (SAFETY deferred must not ride ABSOLUTE 2000ms on a frozen peek).
* PSX_START_BISECT_NO_TIPHOLD_CAPTURE=1: only sample when latching a
* new sim tip (Stage-3 isolate TipHold refresh). */
const int tip_hold = psx_netplay_rb_tip_holding();
const int need_sample =
psx_netplay_needs_local_sample() ||
(tip_hold && !psx_start_bisect_no_tiphold_capture());
if (need_sample) {
PsxNetPad local{};
if (override >= 0 && !g_headless) {
capture_override_pad(override, &local);
} else if (g_headless) {
local.buttons = 0xFFFFu;
local.lx = local.ly = local.rx = local.ry = 0x80u;
local.analog = 1;
local.connected = 1;
} else {
capture_local_human_pad(&local);
}
psx_netplay_stage_local(&local);
} else if (psx_start_bisect_spin_log() && !g_headless) {
/* Dense SDL-only samples while admit waits without capture. */
const int card = psx_netplay_input_player();
const int sdl = netplay_sdl_start_held(card >= 0 ? card : 0);
psx_start_bisect_log("spin", psx_netplay_sim_tick(), sdl, -1, -1,
-1, tip_hold ? 0 : 1, tip_hold,
psx_netplay_is_resimulating());
}
if (psx_netplay_poll_admit()) {
desync_logged = 0;
if (admit_t0) {
const uint64_t t1 = SDL_GetPerformanceCounter();
if (t1 >= admit_t0) s_np_admit_ticks += t1 - admit_t0;
s_np_last_admit_end = t1;
}
return;
}
/* Episode snap may have been applied during pump/try_admit without
* longjmp — flush here (no present-body C++ RAII) before spinning.
* try_admit refuses to arm needs_advance while resume is pending. */
psx_netplay_rb_flush_resume();
#ifndef PSX_NO_DEBUG_TOOLS
debug_server_poll();
#endif
if (!g_headless) {
SDL_Event ev;
while (SDL_PollEvent(&ev)) {
if (ev.type == SDL_QUIT) {
netplay_soft_exit("sdl_window_close");
if (psx_return_to_lobby_requested()) return;
}
if (ev.type == SDL_KEYDOWN) {
#if defined(PSX_SDL3)
const SDL_Keycode key = ev.key.key;
#else
const SDL_Keycode key = ev.key.keysym.sym;
#endif
if (key == SDLK_ESCAPE) {
netplay_soft_exit("netplay_barrier_escape");
if (psx_return_to_lobby_requested()) return;
}
}
if (ev.type == SDL_CONTROLLERDEVICEADDED ||
ev.type == SDL_CONTROLLERDEVICEREMOVED) {
refresh_player_devices();
}
}
/* Stage-3: PSX_START_BISECT_NO_GC_UPDATE_IN_ADMIT skips the dense
* Update that advances SDL pad state between sim publishes. */
if (!psx_start_bisect_no_gc_update_in_admit())
SDL_GameControllerUpdate();
}
if (psx_return_to_lobby_requested()) return;
/* §35: TipHold invent-cap stall freezes guest (no vblank present).
* Keep Swap alive on the last Live frame so SAFETY/held waits do not
* open a ~250ms present gap. */
if (psx_netplay_rb_tip_holding())
netplay_hold_last_present_tick();
/* Wake on peer UDP (or 1ms timeout). SDL_Delay(1) under dual FMV load
* often stretches multi-ms and cut MotK netplay intro ~59→~36; Delay(0)
* busy-spins and can starve the peer (tick-0 hang). */
psx_netplay_wait_recv(1);
/* Admit barriers (save/load sync) can last seconds without guest cycles. */
starvation_watchdog_heartbeat();
}
}
static void sample_pad_into_sio(int override) {
/* Selfcheck fighter mash owns P1 when enabled (headless-safe). */
if (override < 0) {
uint16_t mash = 0xFFFFu;
if (psx_selfcheck_mash_override(&mash))
override = (int)mash;
}
if (override >= 0) {
apply_input_override_to_sio(override);
return;
}
int n = g_offline_pad_count;
if (n < 1) n = 1;
if (n > PSX_MAX_PLAYERS) n = PSX_MAX_PLAYERS;
const uint32_t consumer_sim =
psx_start_consumer_enabled() ? psx_start_consumer_offline_frame() : 0u;
for (int s = 0; s < n; s++) {
PsxNetPad pad;
if (!capture_pad_slot(s, &pad)) continue; /* no device in this port */
/* Push sticks every frame; request the pad type (digital/analog) through
* the coherent channel so a hybrid stick<->d-pad flip is applied only at
* an idle, non-config bus boundary (never mid-poll / mid-handshake). This
* is the fix for the v0.5.0 phantom-input regression: slamming the type
* each frame raced Tomba's DualShock config handshake -> garbage button
* reads. eff_analog still reflects this frame's mode (digital / analog /
* hybrid auto-switch). */
apply_pad_slot_to_sio(s, pad);
if (psx_start_consumer_enabled())
psx_start_consumer_note(s, consumer_sim, pad.buttons);
if (psx_start_bisect_enabled() && s == 0) {
const int sdl = netplay_sdl_start_held(s);
const int cap = ((uint16_t)(~pad.buttons) & 0x0008u) != 0;
const int sio =
((uint16_t)(~sio_get_pad_buttons_slot(s)) & 0x0008u) != 0;
psx_start_bisect_log("offline", consumer_sim, sdl, cap, cap, sio, 1,
0, 0);
}
}
}
static void sample_headless_pad_into_sio(int override) {
if (override < 0) {
uint16_t mash = 0xFFFFu;
if (psx_selfcheck_mash_override(&mash))
override = (int)mash;
}
if (override >= 0) {
apply_input_override_to_sio(override);
return;
}
#ifdef PSX_COSIM
/* Input-driven cosim (EXPERIMENTAL): the coordinator sets a HELD pad state via the
* `setpad` TCP command; the headless sampler applies it every frame so the same
* button input is fed to BOTH lockstep instances at the same guest cycle. If the
* two instances desync under input, this path is proven nondeterministic and gets
* stubbed out (see cosim.c). Default 0xFFFF = all released (PSX pad is active-low). */
{ extern volatile int g_cosim_pad_hold[2];
sio_set_pad_state_slot(0, (uint16_t)g_cosim_pad_hold[0]);
sio_set_pad_state_slot(1, (uint16_t)g_cosim_pad_hold[1]);
return; }
#endif
sio_set_pad_state_slot(0, 0xFFFFu);
sio_set_pad_state_slot(1, 0xFFFFu);
}
/* PSX native vblank cadence: NTSC ≈ 59.94 Hz. Wall-clock target keeps
* audio sample generation (735 samples/vblank * 60 = 44100/sec) matched
* to the SDL audio device drain rate, eliminating queue overflow drops
* and underruns. Uncapped, the host runs the simulation at whatever
* speed it can — typically several × realtime — and audio glitches.
*
* The wall-clock pacer target; nudged to the host display refresh at
* window-creation time (sync-to-host-refresh) so the pacer and SDL PRESENTVSYNC
* do not fight — a fixed 59.94 pacer against a 60.00 Hz panel makes rendered
* frames land on an uneven vblank count (a 2/3/1 beat) that reads as
* moving-object judder/flicker. See g_frame_period_ms. */
static constexpr double PSX_FRAME_PERIOD_MS = 1000.0 / 59.94;
/* Live pacer period (ms). Defaults to the PSX rate; set to the host refresh
* period when the panel is within ~2% of 60 Hz so 30fps content pads evenly to
* two host refreshes. Left at the PSX rate on non-~60Hz panels to avoid running
* the sim at the wrong speed. */
static double g_frame_period_ms = PSX_FRAME_PERIOD_MS;
/* §33/§35/§47: re-present last Live frame on a wall-clock cadence while guest
* sim is frozen (short resim) or TipHold invent-cap stall (admit spin). */
static void netplay_hold_last_present_tick(void) {
static uint64_t s_hold_last_ms;
uint64_t now = SDL_GetTicks64();
uint32_t period = (uint32_t)(g_frame_period_ms + 0.5);
int did = 0;
if (period < 8u)
period = 8u;
if (period > 33u)
period = 33u;
#ifndef PSX_SDL_NO_RENDER
if (g_gl_active)
gl_renderer_set_interpolation_suspended(1);
#endif
if (s_hold_last_ms != 0ull && now >= s_hold_last_ms &&
(uint32_t)(now - s_hold_last_ms) < period)
return;
#ifndef PSX_SDL_NO_RENDER
if (g_gl_active) {
did = gl_renderer_present_hold_last();
} else if (!g_vk_active && sdl_renderer && sdl_texture && s_sw_hold_valid) {
SDL_SetRenderDrawColor(sdl_renderer, 0, 0, 0, 255);
SDL_RenderClear(sdl_renderer);
SDL_RenderCopy(sdl_renderer, sdl_texture, &s_sw_hold_src, &s_sw_hold_dst);
SDL_RenderPresent(sdl_renderer);
did = 1;
}
#endif
if (did) {
netplay_note_present();
s_hold_last_ms = now ? now : 1ull;
}
}
/* §47/§51/§63 Layer 4: long Replay catch-up — wall-clock gate for a real VRAM
* present. Independent of SPAN chunk boundaries (those are bookkeeping, not
* present events). Returns 1 if this guest vblank should fall through.
*
* §63: tip episodes are ≤ tip_runway (24). Live-presenting those frames
* re-showed edge-trigger menu inputs that Live had already displayed before
* the rewind (pad-log DUP_SIO Start/dpad). Hold-last through a full SPAN;
* only ownership-chain catch-up deeper than that shows live progress. */
static int netplay_replay_catchup_should_live_present(uint32_t remaining) {
static uint64_t s_catchup_present_ms;
uint64_t now = SDL_GetTicks64();
/* ~6–7 Hz: enough to show progress without flashing every resim frame. */
uint32_t period = 150u;
if (remaining <= 24u)
return 0;
if (s_catchup_present_ms != 0ull && now >= s_catchup_present_ms &&
(uint32_t)(now - s_catchup_present_ms) < period)
return 0;
s_catchup_present_ms = now ? now : 1ull;
{
static uint32_t s_log_sim;
uint32_t sim = psx_netplay_sim_tick();
if (s_log_sim != sim) {
fprintf(stderr,
"psxrecomp: rb catchup frontier_rem=%u sim=%u target=%u "
"present=live\n",
(unsigned)remaining, (unsigned)sim,
(unsigned)psx_netplay_rb_episode_target());
fflush(stderr);
s_log_sim = sim;
}
}
return 1;
}
/* ── Host-stack-usage profile (RECURSION_BUG.md §17) ──────────────────────────
* The decisive instrument for the long-run freeze. The guest call graph mirrors
* onto the 1MB guest fiber stack (traps.c), and the native-stack guard trips at
* ~768KB used. The open question is the SHAPE of host-stack usage over frames:
* - LINEAR climb from gameplay start => a per-frame interp<->compiled boundary
* leak: every game tick leaks one un-unwound host call chain (~13 frames),
* overflowing the fiber after ~50k frames. 50k is a CAPACITY limit, not a
* trigger. (Model A — predicted.)
* - FLAT, then a cliff at one frame => a within-one-frame runaway re-entry at
* a real ~frame-50k trigger. (Model W — the old §15 premise.)
* (TEB StackBase - rsp), sampled on the guest fiber each vblank, IS the leaked
* depth. Sampled in sdl_vblank_present — a gpu_vblank_tick callback off
* psx_check_interrupts, i.e. ON the guest fiber, every vblank, in both builds.
* Decimated 1-per-STRIDE frames so the ring spans the whole run; "now" carries
* the exact latest sample. ALWAYS-ON: read live via the `stack_profile` TCP
* command while the game is still responsive (no need to reach the overflow),
* and dumped in the crash report. Query the ring; never arm-and-capture. */
#if defined(_WIN32)
#include <intrin.h> /* __readgsqword — fiber TEB StackBase */
static size_t host_stack_used(void) {
char probe;
uintptr_t base = (uintptr_t)__readgsqword(0x08); /* TEB StackBase (high) */
uintptr_t sp = (uintptr_t)&probe;
return (base > sp) ? (size_t)(base - sp) : 0;
}
#else
static size_t host_stack_used(void) { return 0; }
#endif
#define STACK_PROFILE_CAP 512u
#define STACK_PROFILE_STRIDE 128u /* 512 * 128 = 65536 frames of coverage */
typedef struct { uint32_t frame; uint32_t used_kb; } StackSample;
static StackSample g_stack_prof[STACK_PROFILE_CAP];
static uint32_t g_stack_prof_seq = 0;
static uint32_t g_stack_used_now_kb = 0;
static uint32_t g_stack_frame_now = 0;
static uint32_t g_stack_used_max_kb = 0;
static void stack_profile_sample(void) {
extern uint64_t s_frame_count;
uint32_t f = (uint32_t)s_frame_count;
uint32_t kb = (uint32_t)(host_stack_used() >> 10);
g_stack_frame_now = f;
g_stack_used_now_kb = kb;
if (kb > g_stack_used_max_kb) g_stack_used_max_kb = kb;
if ((f % STACK_PROFILE_STRIDE) == 0) {
StackSample *e = &g_stack_prof[g_stack_prof_seq++ & (STACK_PROFILE_CAP - 1u)];
e->frame = f; e->used_kb = kb;
}
}
/* JSON dump of the profile (callable from C: crash report + TCP command). */
extern "C" int stack_profile_json(char *out, int cap) {
uint32_t total = g_stack_prof_seq;
uint32_t avail = total < STACK_PROFILE_CAP ? total : STACK_PROFILE_CAP;
uint32_t start = total - avail;
int n = snprintf(out, cap,
"{\"now\":{\"f\":%u,\"kb\":%u},\"max_kb\":%u,\"stride\":%u,\"count\":%u,\"samples\":[",
g_stack_frame_now, g_stack_used_now_kb, g_stack_used_max_kb,
STACK_PROFILE_STRIDE, avail);
for (uint32_t i = 0; i < avail && n < cap - 48; i++) {
StackSample *e = &g_stack_prof[(start + i) & (STACK_PROFILE_CAP - 1u)];
n += snprintf(out + n, cap - n, "%s{\"f\":%u,\"kb\":%u}",
i ? "," : "", e->frame, e->used_kb);
}
n += snprintf(out + n, cap - n, "]}");
return n;
}
/* ---- Present-classification ring (see present_ring.h) -----------------
* Always-on record of how each present was classified, for every backend.
* A native-wide present that silently falls back to the canonical width is
* indistinguishable on screen from a deliberate stretch, so the decision
* has to live in a queryable ring rather than be re-derived after the fact. */
#define PRES_RING_CAP 4096u /* power of two; ~68 s at 60 Hz */
static PresRingEntry s_pres_ring[PRES_RING_CAP];
static uint64_t s_pres_ring_total = 0;
extern "C" uint64_t present_ring_total(void) { return s_pres_ring_total; }
extern "C" int present_ring_get(uint64_t seq, PresRingEntry* out) {
if (seq >= s_pres_ring_total) return 0;
if (s_pres_ring_total - seq > PRES_RING_CAP) return 0;
*out = s_pres_ring[seq & (PRES_RING_CAP - 1u)];
return 1;
}
/* Commit this present's classification. Returns the stored entry so the
* software wide-fallback (the only post-decision mutation) can amend it. */
static PresRingEntry* present_ring_commit(uint8_t path, uint16_t disp_w,
uint16_t disp_h, uint16_t present_w) {
GpuWsDebug ws;
gpu_ws_get_debug(&ws);
PresRingEntry* e = &s_pres_ring[s_pres_ring_total & (PRES_RING_CAP - 1u)];
s_pres_ring_total++;
e->frame = (uint32_t)ws.cur_frame;
e->disp_w = disp_w;
e->disp_h = disp_h;
e->present_w = present_w;
e->nw_extra = (uint16_t)(ws.nw_extra < 0 ? 0 : ws.nw_extra);
e->path = path;
e->wide_fellback = 0;
e->game_mode = (uint8_t)ws.game_mode;
e->native_43 = (uint8_t)ws.present_native_43;
int64_t d = (int64_t)ws.cur_frame - (int64_t)ws.last_tag_frame;
e->tag_delta = (d > INT32_MAX || d < INT32_MIN) ? INT32_MAX : (int32_t)d;
e->gte_verts = (uint16_t)(ws.gte_verts > 0xFFFF ? 0xFFFF : ws.gte_verts);
e->ovh_prims = (uint16_t)(ws.ovh_prims > 0xFFFF ? 0xFFFF : ws.ovh_prims);
return e;
}
/* ---- Load-transition ring ---------------------------------------------
* State edges only, rather than one record per frame. This makes the exact
* CD-read -> bridged-load -> turbo -> paced transitions cheap and queryable
* without changing any runtime behavior. */
#define LOAD_TRANSITION_CAP 512u
static LoadTransitionEntry s_load_transitions[LOAD_TRANSITION_CAP];
static uint64_t s_load_transition_total = 0;
extern "C" uint64_t load_transition_total(void) {
return s_load_transition_total;
}
extern "C" int load_transition_get(uint64_t seq, LoadTransitionEntry *out) {
if (seq >= s_load_transition_total) return 0;
if (s_load_transition_total - seq > LOAD_TRANSITION_CAP) return 0;
*out = s_load_transitions[seq & (LOAD_TRANSITION_CAP - 1u)];
return 1;
}
static void load_transition_note(int read_active, int load_active,
int turbo_active, int load_run) {
static int prev_read = -1, prev_load = -1, prev_turbo = -1;
if (read_active == prev_read && load_active == prev_load &&
turbo_active == prev_turbo) return;
extern uint64_t s_frame_count;
LoadTransitionEntry *e =
&s_load_transitions[s_load_transition_total & (LOAD_TRANSITION_CAP - 1u)];
s_load_transition_total++;
e->frame = (uint32_t)s_frame_count;
e->host_ms = (uint32_t)SDL_GetTicks();
e->load_run = (uint16_t)(load_run > 0xFFFF ? 0xFFFF : load_run);
e->read_active = (uint8_t)(read_active != 0);
e->load_active = (uint8_t)(load_active != 0);
e->turbo_active = (uint8_t)(turbo_active != 0);
prev_read = read_active;
prev_load = load_active;
prev_turbo = turbo_active;
}
/* Tick MotK-style depth24 cutover state once per present. Arm a short full-
* frame blank when MDEC returns after an idle gap (or after leaving depth24). */
static void depth24_cutover_tick(int depth24) {
const int mdec_on = depth24 && mdec_recently_active(3);
if (!depth24) {
s_d24_prev_mdec = 0;
s_d24_cutover_blank = 0;
s_d24_saw_gap = 1; /* next depth24+MDEC is a fresh movie cutover */
return;
}
if (!mdec_on)
s_d24_saw_gap = 1;
if (s_d24_saw_gap && mdec_on && !s_d24_prev_mdec) {
/* Hide the transitional present(s) that still show stale RGB888 junk. */
s_d24_cutover_blank = 2;
s_d24_saw_gap = 0;
}
s_d24_prev_mdec = mdec_on;
}
/* Depth24 FMV: CRTC width stays full (e.g. MotK 512) while MDEC uploads may
* not cover the right side yet — leftover VRAM read as RGB888 flashes junk.
* Present width is never shrunk; black-fill only the trailing uncovered cols.
*
* Match origin/master's span policy: when upload span is unknown (lim==0),
* only blank the last ~8 columns. Blanking [0..w) on lim==0 (an older tip
* path) turned MotK FMV into a permanent black screen after GP1(07h) hold
* reset the span — hold ticks skip Swap, then the next present saw lim=0
* and wiped the whole frame every vblank.
*
* Optional short cutover blank (tip): full-frame black for 1–2 presents when
* MDEC returns after an idle gap, hiding one-frame transitional junk. */
static void depth24_fix_trailing_margin(uint32_t *buf, uint32_t w, uint32_t h,
uint32_t display_x) {
if (!buf || w < 8u || h == 0u) return;
if (s_d24_cutover_blank > 0) {
s_d24_cutover_blank--;
const uint32_t n = w * h;
for (uint32_t i = 0; i < n; i++)
buf[i] = 0xFF000000u;
return;
}
/* Default: last 8 columns. If the upload span is known and ends earlier
* inside that margin, start blanking from the span edge instead. */
uint32_t start = w - 8u;
uint32_t lim = gpu_depth24_rgb_limit(display_x, w);
if (lim > 0u && lim < w && lim < start)
start = lim;
for (uint32_t y = 0; y < h; y++) {
for (uint32_t x = start; x < w; x++)
buf[y * w + x] = 0xFF000000u;
}
}
/* Epilogue for netplay admit/pace AFTER all C++ RAII in the present body
* is destroyed — episode snap load longjmps via psx_netplay_rb_flush_resume and
* must not cross non-trivial destructors (UB / guest crash). */
struct NetplayVblankEpilogue {
int do_epilogue = 0;
int skip_pace = 0;
int override = -1;
};
/* Called from gpu_vblank_tick() at each simulated vblank. */
static NetplayVblankEpilogue sdl_vblank_present_body(void) {
NetplayVblankEpilogue ep{};
/* Guest quantum for this vblank is complete. Drop top-level-resume armed
* by any resume_at (savestate / selfcheck / RB) during that quantum — the
* next tick has a live native chain under its dispatch again. */
psx_scheduler_top_level_resume_clear();
int probe_turbo = 0;
int probe_reached = 0;
struct PostLoadProbeScope {
int *turbo;
int *reached;
~PostLoadProbeScope() {
post_load_probe_on_vblank(*turbo, *reached);
}
} probe_scope{&probe_turbo, &probe_reached};
#ifndef PSX_NO_DEBUG_TOOLS
debug_server_set_fmv_quiet(mdec_recently_active(2));
/* Debug server: pause gate, poll commands, record frame, check watchpoints. */
debug_server_wait_if_paused();
debug_server_poll();
debug_server_record_frame();
debug_server_check_watchpoints();
/* Check debug server input override. */
int override = debug_server_get_input_override();
#else
/* Production: skip debug server. Still need to advance frame counter
* locally so anything else that reads it continues to work. */
extern uint64_t s_frame_count;
s_frame_count++;
int override = -1;
#endif
runtime_perf_frame_begin();
RuntimePerfFrameScope runtime_perf_frame_scope;
runtime_perf_diag_tick();
/* Lightweight frontend telemetry from PR #13. Count simulated vblanks rather
* than presents so turbo and skipped-frame modes still report game speed.
* Skip during netplay post-load barrier — admit is stalled and the window
* is not updating, so a climbing FPS line is misleading. */
if (!psx_netplay_in_load_barrier()) {
extern uint64_t s_frame_count;
const Uint64 now = SDL_GetPerformanceCounter();
const Uint64 frequency = SDL_GetPerformanceFrequency();
if (!s_fps_last_time) {
s_fps_last_time = now;
s_fps_last_frame = s_frame_count;
if (sdl_window) {
const char *title = SDL_GetWindowTitle(sdl_window);
if (title) s_fps_base_title = title;
}
} else if (frequency && now - s_fps_last_time >= frequency) {
const double seconds = (double)(now - s_fps_last_time) / (double)frequency;
const double fps = (double)(s_frame_count - s_fps_last_frame) / seconds;
const double speed = fps / 59.94;
if (!g_headless && sdl_window) {
char title[256];
snprintf(title, sizeof(title), "%s [%.0f fps %.2fx]",
s_fps_base_title.c_str(), fps, speed);
SDL_SetWindowTitle(sdl_window, title);
}
if (netplay_timing_on() && s_np_timing_frames > 0) {
const double invf = 1000.0 / (double)frequency;
const double admit_ms =
(double)s_np_admit_ticks * invf / (double)s_np_timing_frames;
const double guest_ms =
(double)s_np_guest_ticks * invf / (double)s_np_timing_frames;
/* Fraction of this window's ticks spent resimulating (Replay)
* vs running forward normally (Live). Lets a soak confirm
* "the game was chain-episoding almost the whole time" (near
* 100%) instead of inferring it from raw episode density in
* the log — see docs/ROLLBACK_MOTK_HOOKUP.md 2026-08-01. */
const uint64_t replay_ticks = psx_netplay_rb_take_replay_ticks();
const double replay_pct =
100.0 * (double)replay_ticks / (double)s_np_timing_frames;
uint32_t gap_p95 = 0, gap_max = 0;
/* §27: presentation starvation — eye cares about gaps more
* than replay%. Pass: post-settle present_gap_p95 ≤ 33ms. */
netplay_present_gap_stats(&gap_p95, &gap_max);
std::fprintf(stderr,
"[FPS] game: %.1f fps (%.2fx) | frames: %llu | "
"guest=%.2f ms/f admit=%.2f ms/f replay=%.0f%% "
"present_gap_p95=%u ms max=%u ms (n=%llu)\n",
fps, speed, (unsigned long long)s_frame_count,
guest_ms, admit_ms, replay_pct,
(unsigned)gap_p95, (unsigned)gap_max,
(unsigned long long)s_np_timing_frames);
s_np_admit_ticks = 0;
s_np_guest_ticks = 0;
s_np_timing_frames = 0;
} else {
std::fprintf(stderr, "[FPS] game: %.1f fps (%.2fx) | frames: %llu\n",
fps, speed, (unsigned long long)s_frame_count);
}
std::fflush(stderr);
s_fps_last_time = now;
s_fps_last_frame = s_frame_count;
}
}
/* Host-stack-usage profile sample — frame counter is now current, and we are
* on the guest fiber (see §17 block above). BEFORE the turbo/fast-boot early
* returns so the curve is captured even when presents are skipped. */
stack_profile_sample();
/* Step 2.8 automation ticks — BEFORE the turbo/fast-boot early returns
* below, so capture detection and compile pickup keep running while the
* frontend is skipping presents. Both are cheap and emu-thread-only. */
{
uint64_t perf_start = runtime_perf_section_begin();
overlay_autocapture_tick();
runtime_perf_section_end(perf_start,
&g_runtime_perf.autocapture_ticks);
}
{ /* Apply a finished batch compile via the active code provider (gcc:
* cache rescan on done). */
uint64_t perf_start = runtime_perf_section_begin();
const CodeProvider *cp = code_provider_active();
if (cp->poll_main) cp->poll_main();
runtime_perf_section_end(perf_start,
&g_runtime_perf.provider_poll_ticks);
}
if (!g_headless) {
/* Pump SDL events to prevent window freeze. */
SDL_Event ev;
while (SDL_PollEvent(&ev)) {
if (ev.type == SDL_QUIT) {
if (psx_netplay_active()) {
netplay_soft_exit("sdl_window_close");
return ep;
}
psx_crash_trace_set_exit_origin("sdl_window_close");
shutdown_runtime();
std::exit(0);
} else if (ev.type == SDL_CONTROLLERDEVICEADDED) {
refresh_player_devices();
} else if (ev.type == SDL_CONTROLLERDEVICEREMOVED) {
bool ours = false;
for (int s = 0; s < PSX_MAX_PLAYERS; s++) {
#if defined(PSX_SDL3)
if (ev.gdevice.which == g_players[s].instance) { ours = true; break; }
#else
if (ev.cdevice.which == g_players[s].instance) { ours = true; break; }
#endif
}
if (ours) {
close_controller();
refresh_player_devices();
}
} else if (ev.type == SDL_KEYDOWN) {
#if defined(PSX_SDL3)
const SDL_Keymod mod = ev.key.mod;
const SDL_Keycode key = ev.key.key;
#else
const Uint16 mod = ev.key.keysym.mod;
const SDL_Keycode key = ev.key.keysym.sym;
#endif
if (key == SDLK_ESCAPE && psx_netplay_active()) {
netplay_soft_exit("netplay_escape");
return ep;
}
/* Save states: Shift+F1-F12 = save slot 0-11, F1-F12 = load.
* (F11 is a save slot per the user's spec, so fullscreen is
* Alt+Enter / Cmd+Ctrl+F only — no F11.) */
if (key >= SDLK_F1 && key <= SDLK_F12) {
int slot = (int)(key - SDLK_F1); /* 0..11 */
if (psx_netplay_active()) {
/* Match host only — guest F-keys must not initiate. */
if (!psx_netplay_is_host()) {
/* ignore */
} else if (mod & KMOD_SHIFT) {
(void)psx_netplay_request_save(slot);
} else {
(void)psx_netplay_request_load(slot);
}
} else if (mod & KMOD_SHIFT) {
savestate_request_save(slot);
} else {
savestate_request_load(slot);
}
}
else if (key == SDLK_c && (mod & KMOD_CTRL)) {
std::fprintf(stdout, "[DEBUG] Forzando reinserción de CD...\n");
debug_force_cd_reinsert();
}
/* Fullscreen toggle: Alt+Enter or Cmd/Ctrl+F. Toggles between
* windowed and the CONFIGURED tri-state mode (g_fullscreen: 1
* borderless desktop fullscreen keeping the desktop resolution
* and letterboxing the image, or 2 exclusive fullscreen — a
* real display-mode change). SDL_WINDOW_FULLSCREEN's bit is
* set in both SDL_WINDOW_FULLSCREEN and
* SDL_WINDOW_FULLSCREEN_DESKTOP, so testing just that bit
* detects "currently fullscreen, either mode". */
else if ((key == SDLK_RETURN && (mod & KMOD_ALT)) ||
(key == SDLK_f && (mod & (KMOD_GUI | KMOD_CTRL)))) {
Uint32 is_fs = SDL_GetWindowFlags(sdl_window) &
SDL_WINDOW_FULLSCREEN;
if (is_fs) {
SDL_SetWindowFullscreen(sdl_window, 0);
} else {
/* If the configured mode is "off", the hotkey still
* needs a mode to switch INTO — default to borderless,
* matching the historical (pre-tri-state) behaviour. */
Uint32 target = psx_fullscreen_flag_for_mode(g_fullscreen);
if (target == 0) target = SDL_WINDOW_FULLSCREEN_DESKTOP;
SDL_SetWindowFullscreen(sdl_window, target);
}
}
}
}
}
/* Sample each player's device and feed the matching SIO pad slot.
* Debug server input override (when active) drives port 1 only. With
* g_low_latency_input this early sample is re-done after the pacer wait
* (below) for the interactive present path; it still covers the turbo /
* FMV-skip paths that early-return before pacing.
*
* Delay-sync netplay host FPS (MotK FMV): finish → present → admit/pace.
* Admit/pace run in sdl_vblank_present() AFTER this body returns so episode
* resume longjmp does not cross C++ destructors. Early returns still set
* ep.do_epilogue so admit runs every tick (including skip-present paths).
* Offline keeps pace-before-present. Barrier wait stays UDP poll — do
* not pair this order with SDL_Delay(0) busy-spin (tick-0 hang). */
ep.do_epilogue = psx_netplay_active() != 0 ? 1 : 0;
ep.override = override;
/* Turbo-active / multitap arming share game-started detection. */
extern int fntrace_is_game_started(void);
if (psx_netplay_active()) {
psx_netplay_finish_frame();
} else {
/* Offline N-pad: enable multitap only once the game EXE is running.
* Port comes from game.toml [controller] multitap_port (default Port 1;
* BPE uses Port 2). Empty tap slots are OK — P1 may be the standalone
* pad on the other port. */
if (g_offline_pad_count >= 3 && fntrace_is_game_started() &&
!sio_get_multitap()) {
sio_set_multitap(1);
/* Tap seats drop to plain digital as soon as the tap is live. */
for (int s = 0; s < PSX_MAX_PLAYERS; ++s) {
if (!sio_pad_on_multitap(s)) continue;
sio_set_pad_config_capable(s, 0);
sio_set_pad_analog(s, 0, 0x80, 0x80, 0x80, 0x80);
}
std::fprintf(stdout,
"psxrecomp: multitap armed (console Port %d; "
"tap pads forced digital)\n",
sio_get_multitap_port() + 1);
}
/* Solo resim self-check replay republishes the recorded rows itself —
* live sampling must not touch SIO during the replay window. */
if (!psx_selfcheck_replay_input()) {
if (g_headless)
sample_headless_pad_into_sio(override);
else
sample_pad_into_sio(override);
}
/* Offline vblank boundary: record/replay/compare (PSX_RB_SELFCHECK).
* Defer opening a window while multitap arming is still pending —
* the arm writes SIO once, host-latched, and would not replay. */
psx_selfcheck_finish_frame(
(g_offline_pad_count >= 3 && !sio_get_multitap()) ? 1 : 0);
}
/* Latency ring: open this present cycle's slot, stamping when input was
* sampled into SIO. Always-on; queried via the debug server "latency". */
latency_ring_frame_begin();
/* Post-savestate CD delay boost (ReadTOC/seek clamp window).
* Skip during rollback resim — boost is host-local and not in the CD snap. */
if (!psx_netplay_is_resimulating() && !psx_selfcheck_resim_active())
cdrom_savestate_boost_vblank();
/* Turbo-active test shared by the pacing/present gate below. */
int turbo_loads_active = 0;
int logical_load_active = fntrace_is_game_started() &&
(cdrom_load_in_progress() || cdrom_savestate_cd_wait_active());
int load_run_value = 0;
static int load_run = 0;
static int release_run = 0;
if (g_turbo_loads_enabled && !psx_netplay_active() &&
!psx_selfcheck_resim_active()) {
/* Require a short sustained predicate on entry, then retain turbo over
* a short false gap after it has engaged. Netplay / selfcheck keep
* wall-pacing off via their own gates; turbo engage hysteresis must
* not leak host ambient across resim passes. */
if (logical_load_active) {
if (load_run < (1 << 20)) load_run++;
if (load_run >= TURBO_LOADS_ENGAGE_FRAMES || release_run > 0) {
turbo_loads_active = 1;
release_run = TURBO_LOADS_RELEASE_FRAMES;
}
} else {
load_run = 0;
if (release_run > 0) {
turbo_loads_active = 1;
release_run--;
}
}
load_run_value = load_run;
} else {
load_run = 0;
release_run = 0;
}
/* HLE boot-skip window: from reset until the game entry PC first
* dispatches, run unpaced so the (shell-skipped) BIOS kernel init +
* SYSTEM.CNF + game EXE load compress to host speed. This replaces the
* old fast_boot snapshot restore; all guest timing is authentic. */
if (psx_bios_hle_boot_turbo_active())
turbo_loads_active = 1;
probe_turbo = turbo_loads_active;
load_transition_note(cdrom_data_read_active(), logical_load_active,
turbo_loads_active, load_run_value);
/* FMV auto-skip ([video] auto_skip_fmv). A streaming FMV is XA audio + MDEC
* video together. Detect "MDEC produced a frame since the last vblank AND XA
* is streaming"; a short hold rides out brief inter-frame gaps. The present/
* pacing safety-net + audio mute below hide the one or two transition frames.
*
* End the movie the GAME's own way, chosen per game:
* - fmv_skip_total_table set (Tomba): write the CURRENT movie's per-movie
* frame-total down to fmv_skip_end_total, so the player's MDEC loop
* (FUN_8001efe8: teardown when streamed frame# >= total - 3) terminates on
* its next frame — a NATURAL end that reaches EVERY movie, including ones
* whose caller never polls the skip button. Only the active movie's table
* entry is touched (via the movie-id byte), so nothing else is disturbed.
* - no table configured (generic): hold START so a movie whose handler polls
* the pad aborts itself (can't reach unskippable movies). */
int fmv_skip_active = 0;
/* Never inject START / poke movie totals under netplay — host-side skip
* forks peers (and stomps SIO after sealed publish during resim). */
if (g_auto_skip_fmv && !psx_netplay_active() &&
!psx_selfcheck_resim_active()) {
uint32_t mc = mdec_get_decode_count();
int mdec_decoding = (mc != s_fmv_skip_last_mdec);
s_fmv_skip_last_mdec = mc;
int xa = cdrom_xa_stream_active();
/* fmv_skip_no_xa: silent RAM-preloaded movies (no XA stream) never
* satisfy the MDEC+XA detector; with the per-game opt-in, MDEC
* activity alone qualifies. */
int detected = mdec_decoding && (xa || g_fmv_skip_no_xa);
if (detected) s_fmv_skip_hold = (!xa && g_fmv_skip_no_xa)
? g_fmv_skip_no_xa_hold : 4;
else if (s_fmv_skip_hold > 0) s_fmv_skip_hold--;
fmv_skip_active = (s_fmv_skip_hold > 0) && (xa || g_fmv_skip_no_xa);
if (fmv_skip_active) {
if (g_fmv_skip_total_table) {
/* End the active movie via its own frame-count teardown. */
uint8_t mid = psx_read_byte(g_fmv_skip_movie_id);
psx_write_half(g_fmv_skip_total_table + (uint32_t)mid * 2u,
(uint16_t)g_fmv_skip_end_total);
} else {
/* Generic fallback: hold START (PSX pad word is active-low; START
* is bit 3) so the game's FMV handler aborts the movie itself. */
sio_set_pad_state_slot(0, (uint16_t)~(1u << 3));
}
}
}
#ifndef PSX_SDL_NO_AUDIO
/* Optional turbo host sink advances the canonical SPU on the exact guest
* sample budget but drops accelerated output before SDL. This is distinct
* from the old mute/freeze model: voice and CD state never pause. FMV skip
* retains the hard mute because it deliberately fast-forwards a movie.
* Rollback resim: skip host audio pump (uncapped frames) so SPU/CD audio
* paths cannot fork peers during the episode window. */
if (!psx_netplay_is_resimulating() && !psx_selfcheck_resim_active()) {
sdl_audio_update(fmv_skip_active,
turbo_loads_active && g_turbo_audio_sink_enabled);
}
#endif
if (g_headless) {
ep.skip_pace = 1;
return ep;
}
/* TCP turbo is for automated validation and trace capture. It keeps the
* simulation advancing and the debug server polling, but removes frontend
* presentation and wall-clock pacing. */
#ifndef PSX_NO_DEBUG_TOOLS
if (debug_server_turbo_enabled()) {
ep.skip_pace = 1;
return ep;
}
#endif
/* Turbo mode: while TAB is held, skip both VRAM->ARGB conversion and
* SDL_RenderPresent. The recompiled BIOS still advances simulated
* cycles every vblank, so the BIOS proceeds at whatever rate the host
* CPU sustains without graphics-driver vsync overhead. Present once
* every TURBO_PRESENT_EVERY frames so the user sees visual progress. */
{
const Uint8* keys = SDL_GetKeyboardState(NULL);
static int turbo_skip = 0;
const int TURBO_PRESENT_EVERY = 30;
if (keys[SDL_SCANCODE_TAB]) {
turbo_skip = (turbo_skip + 1) % TURBO_PRESENT_EVERY;
if (turbo_skip != 0) {
ep.skip_pace = 1;
return ep; /* skip render this frame */
}
} else {
turbo_skip = 0;
}
}
/* Turbo-through-loads (step 4, OPT-IN via game.toml [runtime]
* turbo_loads): while the game is loading — CD data stream active,
* XA/FMV excluded, post-BIOS-handoff only — skip wall-clock pacing and
* most presents so the guest runs at host speed. Step-3 measurement
* showed loads are paced by the game's own per-sector processing at
* real time (2.2-4.8 sectors/frame against a 32-256 IRQ budget), so
* host-speed execution is the lever that compresses load wall-time.
* Presents 1-in-30 so visual progress stays visible. */
if (turbo_loads_active) {
g_turbo_loads_frames++;
const int TL_PRESENT_EVERY = 30;
s_turbo_present_skip = (s_turbo_present_skip + 1) % TL_PRESENT_EVERY;
if (s_turbo_present_skip != 0) {
ep.skip_pace = 1;
return ep;
}
}
/* FMV auto-skip: run uncapped (no wall-clock pacing) and suppress nearly all
* presents so the fast-forwarded movie is invisible. Present 1-in-30 only so
* the window keeps pumping and never looks hung during the brief skip. */
if (fmv_skip_active) {
const int FMV_PRESENT_EVERY = 30;
s_fmv_skip_present_skip = (s_fmv_skip_present_skip + 1) % FMV_PRESENT_EVERY;
if (s_fmv_skip_present_skip != 0) {
ep.skip_pace = 1;
return ep;
}
}
/* Netplay FMV: present 1 of every 4 depth24 vblanks while MDEC is hot.
* SW RGB888 scanout dominates guest ms; admit + wall pace still run every
* tick in the epilogue. Do NOT skip pace — MotK ran ~90fps when decode was
* fast and pace was skipped here. During MDEC-idle cutover (FMV1→FMV2)
* present every frame so the next stream can handshake (1/4 skip left the
* gap looking frozen with cheap guest + TURN admit wait). */
if (psx_netplay_active() && gpu_display_is_depth24() &&
mdec_recently_active(8)) {
if (s_netplay_depth24_present_skip > 0) {
s_netplay_depth24_present_skip--;
return ep;
}
s_netplay_depth24_present_skip = 3; /* skip next three presents */
} else {
s_netplay_depth24_present_skip = 0;
}
/* Offline wall-clock pacing before present. Netplay paces in the epilogue
* AFTER present so Swap overlaps the peer's guest quantum. Self-check
* replay runs uncapped like netplay resim. */
if (!psx_netplay_active() && !psx_selfcheck_resim_active()) {
uint64_t perf_start = runtime_perf_section_begin();
frame_pacer_wait(&s_frame_pacer, g_frame_period_ms);
runtime_perf_section_end(perf_start, &g_runtime_perf.pacer_ticks);
latency_ring_mark(LAT_PACED);
/* Low-latency input: the early sample above is now ~one pacer-wait old.
* Refresh the device state and re-sample right before present so the next
* CPU frame reads near-fresh input (the dominant input->photon cost on a
* vsync-light box). Re-stamp the ring's input mark to measure from here.
* Self-check record keeps pads boundary-latched (netplay tick
* semantics) — the mid-frame re-sample would fork the resim. */
if (g_low_latency_input && !psx_selfcheck_input_locked()) {
SDL_GameControllerUpdate(); /* refresh pad state after the wait */
SDL_PumpEvents(); /* refresh keyboard state */
sample_pad_into_sio(override);
latency_ring_restamp_input();
}
}
/* Mod hooks. Run after all normal input sampling. */
mod_call_frame_hooks();
/* Depth24 GP1(07h) retarget (MotK intro→crawl): keep the prior Swap for a
* few vblanks so stale trailing VRAM never flashes on the right edge.
* Must tick every present — gpu.c arms s_d24_present_hold and also
* freezes upload-span tracking while hold > 0; without this call the hold
* sticks and depth24_fix_trailing_margin blanks the whole FMV forever. */
if (gpu_depth24_present_hold_tick())
return ep;
/* Engage widescreen at game entry: BIOS boot stays authentic 4:3. */
if (!g_ws_engaged) {
extern int fntrace_is_game_started(void);
if (fntrace_is_game_started()) {
g_ws_engaged = true;
int mode = g_ws_native_wide ? 2 : 1;
/* Native-wide: GTE drawn un-squashed — feed it the 4:3 ratio
* (identity squash). Squash mode: feed the real wide aspect. */
gte_set_display_aspect(mode == 1 ? g_video_aspect_num : 4,
mode == 1 ? g_video_aspect_den : 3);
gpu_ws_configure(g_video_aspect_num, g_video_aspect_den,
g_ws_anchor_addr, g_ws_hud_sprt ? 1 : 0, mode);
}
}
/* Rollback resim (§33/§47): short catch-up keeps hold-last; long catch-up
* periodically presents live Replay VRAM so the display shows progress
* while sim stays uncapped. TipHold invent-cap stall uses hold-last from
* the admit spin (no guest vblank).
*
* §74: ownership-chain Replay treadmills at wire pace during fights
* (target extends per wire arrival, remaining ≤ 24 forever), so the
* blanket hold-last froze the display 135–212 ms per ~12-tick episode
* and then skipped ahead ("delay-sync burst" feel). Split by a display
* watermark: frames the user has NEVER seen (resim sim beyond the
* highest sim ever presented) are new forward progress — present them
* live every vblank. Frames at/below the watermark are a rewound
* re-play; hold-last exactly as before so §63 edge-input re-show
* (pad-log DUP_SIO) stays impossible. */
if (psx_netplay_is_resimulating()) {
uint32_t rem = psx_netplay_rb_confirmed_remaining();
uint32_t sim = psx_netplay_sim_tick();
int beyond_shown = sim != 0u && sim != 0xffffffffu &&
sim > s_netplay_present_sim_watermark;
if (!beyond_shown && !netplay_replay_catchup_should_live_present(rem)) {
netplay_hold_last_present_tick();
return ep;
}
/* Fall through to real VRAM present (new frame, or wall-clock gate). */
}
{
/* Raise the display watermark for any frame that falls through to a
* real present (live or Replay). Hold-last paths return above and
* never raise it. */
uint32_t sim = psx_netplay_sim_tick();
if (sim != 0u && sim != 0xffffffffu &&
sim > s_netplay_present_sim_watermark)
s_netplay_present_sim_watermark = sim;
}
/* ---- Display from our VRAM ---- */
probe_reached = 1;
uint32_t w = 0, h = 0;
uint32_t present_w = 0; /* display width actually presented (w + native-wide EXTRA) */
int active_scale = 1; /* hi-res mirror used only for 15-bit display */
bool fmv_frame = false; /* FMV/boot — present pillarboxed 4:3 in widescreen */
bool pin_43 = false; /* pillarbox this present (FMV, or a native-wide
game frame that could not present wide) */
bool depth24_frame = false;
if (s_force_present_after_load && g_gl_active)
gl_renderer_flush_cpu_uploads();
{
GpuDisplayInfo di;
gpu_get_display_info(&di);
depth24_frame = di.depth24 != 0;
depth24_cutover_tick(depth24_frame ? 1 : 0);
if (di.disabled || di.width == 0 || di.height == 0) {
smooth_60_present(nullptr, 0, 0, false);
present_ring_commit(PRES_PATH_BLANK, (uint16_t)di.width,
(uint16_t)di.height, 0);
#ifndef PSX_SDL_NO_RENDER
/* After savestate load, always restage once even if we blanked
* earlier in the session — otherwise the window keeps a stale
* pre-load frame while vblanks (and FPS) keep advancing. */
if (!s_disabled_frame_presented || s_force_present_after_load) {
s_disabled_frame_presented = true;
s_force_present_after_load = false;
if (g_gl_active) {
gl_renderer_present_blank();
} else if (g_vk_active) {
vk_renderer_present_blank();
} else {
if (!sdl_renderer && ensure_sw_sdl_present() != 0)
return ep;
if (sdl_renderer) {
SDL_SetRenderDrawColor(sdl_renderer, 0, 0, 0, 255);
SDL_RenderClear(sdl_renderer);
SDL_RenderPresent(sdl_renderer);
}
}
}
#endif
return ep;
}
s_disabled_frame_presented = false;
s_force_present_after_load = false;
w = di.width; h = di.height;
/* 4:3-pinned frames: the pre-game BIOS boot, plus (once engaged) every
* frame the widescreen layer presents native — FMV video and full-2D
* menu/title screens. gpu_ws_present_native_43() is the single source
* of truth, shared with the GTE/GPU squash so content and present stay
* locked: we squash IFF we stretch. depth24 always classifies as FMV
* even if the ws layer is not engaged yet (4:3 titles). */
fmv_frame = di.depth24 || !g_ws_engaged || gpu_ws_present_native_43() != 0;
/* MDEC movies are already decoded at their authored cadence and are
* CPU/upload heavy. High-refresh crossfades only contend with decoding
* and can starve audio, so present native-4:3/MDEC phases directly.
* The classification catches the transition frame before the first
* decode; the activity stamp also covers authentic 4:3 configurations. */
if (g_gl_active)
gl_renderer_set_interpolation_suspended(
fmv_frame || mdec_recently_active(2));
/* Canonical present width. Native-wide does NOT widen the canonical read
* (that bled across adjacent framebuffers); it composites into a separate
* wide surface and presents from there instead (see gpu wide compositor). */
present_w = w;
/* Native-wide present: on a game frame, if the active backend has the
* wide compositor, present the wider surface (canonical width + EXTRA)
* from the displayed buffer's surface. FMV/menu frames stay 4:3. */
bool wide_present = (!fmv_frame && !di.depth24 && g_ws_engaged &&
ws_native_wide_active() && gr_wide_supported());
if (wide_present) present_w = w + (uint32_t)ws_nw_extra();
/* Native-wide invariant: canonical (320-wide) content is NEVER
* stretched across the wide window — a game frame that cannot present
* wide (compositor unsupported, or the surface fallback below)
* pillarboxes 4:3 like FMV/menus instead. Only squash mode (1) may
* stretch: its canonical content is pre-squashed FOR the stretch. */
const bool nw_pin = g_ws_engaged && g_ws_native_wide;
/* Ring the classification now that it's final (only the software/CPU
* wide path below can still fall back — it amends this entry). A
* CANONICAL game frame on a widescreen window IS the stretch. */
PresRingEntry* pres_entry = present_ring_commit(
fmv_frame ? PRES_PATH_NATIVE_43
: (wide_present ? PRES_PATH_WIDE : PRES_PATH_CANONICAL),
(uint16_t)w, (uint16_t)h, (uint16_t)present_w);
/* OpenGL: 15-bit frames ALWAYS present straight from the authoritative
* VRAM FBO — one deterministic path (the old per-frame FBO-vs-CPU
* alternation caused the menu seam/jitter). 24-bit (FMV) frames and
* the PSX_GL_FORCE_CPU_PRESENT diagnostic use the CPU readout below.
* depth24: do NOT sync_cpu (FBO readback can clobber packed RGB888) and
* do NOT flush_cpu_uploads (MDEC already wrote the CPU mirror; forcing
* FBO uploads every frame cut MotK intro from ~50 to ~30 FPS). */
#ifndef PSX_SDL_NO_RENDER
if (g_gl_active && g_gl_fbo_present && !di.depth24) {
if (wide_present) {
/* GPU-direct native-wide present: blit the displayed buffer's
* wide FBO straight to the window (GPU-side, like the canonical
* present_vram). This avoids the glFinish + glReadPixels CPU
* round-trip the old path did EVERY frame — that readback was the
* GL-only slowdown (SW's wide path is pure CPU, no GPU sync, so
* SW stayed smooth). Falls through to the CPU readout path only if
* the wide surface for this buffer doesn't exist yet. */
if (gl_renderer_present_wide_fbo((int)di.display_x, (int)di.display_y,
(int)h, g_video_aa ? 1 : 0)) {
netplay_note_present();
return ep;
}
} else {
gl_renderer_present_vram((int)di.display_x, (int)di.display_y,
(int)present_w, (int)h, g_video_aa ? 1 : 0,
(fmv_frame || nw_pin) ? 1 : 0);
netplay_note_present();
return ep;
}
}
if (g_gl_active && !di.depth24) gl_renderer_sync_cpu();
/* Vulkan owns every frame: 15-bit frames present straight from the GPU
* VRAM image (deterministic blit, no readback), mirroring the GL path;
* 24-bit (FMV) frames go through the CPU present (Phase 3). The Vulkan
* window has no SDL_Renderer, so we must never fall through below. */
if (g_vk_active) {
if (di.depth24) {
/* 24-bit (FMV): packed RGB lives in the CPU mirror — do NOT
* sync_cpu (FBO readback clobbers RGB888). Batch per-scanline
* (see gpu_depth24_present_row) instead of a per-pixel call
* chain — this loop was the FMV present-side cost. */
for (uint32_t y = 0; y < h; y++)
gpu_depth24_present_row(&di, y, sdl_pixel_buf + (size_t)y * present_w,
present_w);
/* Trailing / cutover blank: black-fill uncovered RGB cols
* inside the full-width buffer — never shrink present width. */
depth24_fix_trailing_margin(sdl_pixel_buf, present_w, h,
di.display_x);
vk_renderer_present_cpu(sdl_pixel_buf, (int)present_w, (int)h,
0 /* nearest */, fmv_frame ? 1 : 0);
} else if (wide_present &&
vk_renderer_present_wide((int)di.display_x, (int)di.display_y,
(int)h, g_video_aa ? 1 : 0)) {
/* presented wide */
} else {
vk_renderer_present_vram((int)di.display_x, (int)di.display_y,
(int)present_w, (int)h, g_video_aa ? 1 : 0,
(fmv_frame || nw_pin) ? 1 : 0);
}
netplay_note_present();
return ep;
}
#endif
/* The hi-res mirror is a 15-bit copy of VRAM; 24-bit display (FMV)
* reads packed bytes the mirror can't represent, so fall back to the
* native path for those frames (the present filter still upscales).
* SW-only netplay present: native scanout. Dual-raster FBO present
* already returned above at GL SSAA. */
if (netplay_cpu_auth_gpu() && !netplay_gl_dual_quality())
active_scale = 1;
else
active_scale = (g_video_scale > 1 && !di.depth24) ? g_video_scale : 1;
if (wide_present) {
/* The wide compositor surface is at the renderer's REAL internal
* scale, which gr_render_wide_display uses for its readback pitch.
* Use gr_scale() (== that internal scale) rather than g_video_scale:
* on the GL backend g_video_scale can be stale (1) while the renderer
* supersamples at 2, and a mismatch makes the present read the wide
* buffer at the wrong width (a magnified top-left slice). gr_scale()
* is guaranteed to match the readback. Falls back to the canonical
* hires path if the displayed buffer has no surface yet. */
int s = gr_scale();
int sw = (int)present_w * s;
int n = gr_render_wide_display(sdl_pixel_buf, (int)(sw * sizeof(uint32_t)),
(int)di.display_x, (int)di.display_y, (int)h);
if (n > 0) {
active_scale = s;
} else {
wide_present = false;
present_w = w;
pres_entry->path = PRES_PATH_CANONICAL;
pres_entry->wide_fellback = 1;
pres_entry->present_w = (uint16_t)present_w;
}
}
/* depth24 (MotK crawl is 128 lines): pin short bands for letterbox even
* when fmv_frame is false on a plain 4:3 window (ws layer not engaged). */
pin_43 = fmv_frame || di.depth24 || (nw_pin && !wide_present);
if (!wide_present) {
/* Never hires-present under netplay CPU-auth (even if settings say
* 4× — that preference is offline-only). */
if (active_scale > 1 && !netplay_cpu_auth_gpu()) {
int sw = (int)present_w * active_scale;
gr_render_display_hires(sdl_pixel_buf, (int)(sw * sizeof(uint32_t)),
(int)di.display_x, (int)di.display_y,
(int)present_w, (int)h);
} else if (di.depth24) {
/* Batch per-scanline (see gpu_depth24_present_row) — the
* per-pixel call chain was the dominant FMV present cost
* (3x the VRAM touches of the 16-bit path below). */
for (uint32_t y = 0; y < h; y++)
gpu_depth24_present_row(&di, y, sdl_pixel_buf + (size_t)y * present_w,
present_w);
} else {
for (uint32_t y = 0; y < h; y++) {
for (uint32_t x = 0; x < present_w; x++) {
sdl_pixel_buf[y * present_w + x] = gpu_display_pixel_argb(&di, x, y);
}
}
}
}
/* Depth24 trailing / cutover blank: MotK CRTC is 512 RGB but uploads
* may not cover the right side yet (colorful junk flash). Fix pixels
* in-place at full present_w — never crop the GL/SDL draw width. */
if (di.depth24 && active_scale == 1 && !wide_present)
depth24_fix_trailing_margin(sdl_pixel_buf, present_w, h,
di.display_x);
smooth_60_present(sdl_pixel_buf,
present_w * (uint32_t)active_scale,
h * (uint32_t)active_scale,
!g_gl_active && !g_vk_active && !di.depth24 && !fmv_frame);
/* Frame blending (CRT-persistence masker for 30fps double-buffered
* content). Some games (e.g. Crash Bash menus/characters) leave a
* dynamic object in only one of the two display buffers per 30fps cycle,
* so it strobes on/off as the display alternates buffers — the static
* background, present in both, stays put. Real CRTs hid this via phosphor
* persistence; accurate emulators either time it away (cycle accuracy) or
* offer a "blend frames" option that averages the last two presented
* frames. This is the latter: presentation only, game logic untouched.
* Guarded to the plain software present path (no GL/VK/wide/hires/FMV) so
* the buffer is a simple present_w*h ARGB grid. PSX_FRAME_BLEND=0 off. */
{
static int blend_cfg = -1; /* -1 unresolved, 0 off, 1 on */
if (blend_cfg < 0) {
const char* e = getenv("PSX_FRAME_BLEND");
blend_cfg = (e && e[0] == '1') ? 1 : 0; /* default off (masker only) */
}
const bool simple_sw = !g_gl_active && !g_vk_active && !wide_present &&
!di.depth24 && active_scale == 1;
if (blend_cfg && simple_sw &&
!g_smooth_60fps.load(std::memory_order_acquire)) {
static uint32_t prev_buf[640 * 512];
static uint32_t prev_px = 0;
const uint32_t npx = present_w * h;
if (npx <= (uint32_t)(640 * 512)) {
if (prev_px == npx) {
for (uint32_t i = 0; i < npx; i++) {
const uint32_t a = sdl_pixel_buf[i];
const uint32_t b = prev_buf[i];
prev_buf[i] = a; /* store this frame (pre-blend) */
sdl_pixel_buf[i] =
0xFF000000u |
(((a & 0xFEFEFEu) >> 1) + ((b & 0xFEFEFEu) >> 1));
}
} else {
/* Resolution changed / first frame: seed, no blend. */
for (uint32_t i = 0; i < npx; i++) prev_buf[i] = sdl_pixel_buf[i];
prev_px = npx;
}
}
}
}
}
/* Update only the active display rectangle. The backing texture is sized
* 640x512 (times the supersampling factor), while games can switch to
* smaller modes such as 320x224 for FMV; presenting the full texture would
* leave the active image stuck in the upper-left portion of the window. */
#ifndef PSX_SDL_NO_RENDER
int src_w = (int)present_w * active_scale;
int src_h = (int)h * active_scale;
if (g_gl_active) {
/* OpenGL present: upload the active display rect and draw a full-screen
* quad. SDL_GL_SwapWindow handles vsync; the wall-clock pacer above
* still owns timing. 24-bit (FMV) frames pin to native 4:3. */
/* FMV: nearest present — linear filtering fringes the right edge of
* low-res 24-bit scanouts into adjacent (often garbage) texels. */
gl_renderer_present(sdl_pixel_buf, src_w, src_h,
(g_video_aa && !depth24_frame) ? 1 : 0,
pin_43 ? 1 : 0, 0 /* full width */);
netplay_note_present();
} else {
if ((!sdl_renderer || !sdl_texture) && ensure_sw_sdl_present() != 0)
return ep;
if (!sdl_renderer || !sdl_texture)
return ep;
SDL_Rect src = { 0, 0, src_w, src_h };
SDL_UpdateTexture(sdl_texture, &src, sdl_pixel_buf,
(int)(src_w * sizeof(uint32_t)));
/* Short FMV bands only update [0..src_h). Linear sampling at the bottom
* edge blends with uninitialized texels below (X11 SDL backends often
* show that as a thin white strip; Wayland may not). Pad one black row
* so any residual linear fringe is black, matching the letterbox. */
const int tex_scale = netplay_cpu_auth_gpu() ? 1 : g_video_scale;
const int tex_h = 512 * tex_scale;
if (src_w > 0 && src_h > 0 && src_h < tex_h) {
static uint32_t s_black_pad[640 * 4]; /* covers g_video_scale <= 4 */
const int pad_cap = (int)(sizeof(s_black_pad) / sizeof(s_black_pad[0]));
const int pad_w = (src_w <= pad_cap) ? src_w : pad_cap;
for (int i = 0; i < pad_w; i++)
s_black_pad[i] = 0xFF000000u;
SDL_Rect pad = { 0, src_h, pad_w, 1 };
SDL_UpdateTexture(sdl_texture, &pad, s_black_pad,
(int)(pad_w * sizeof(uint32_t)));
}
/* FMV (24-bit) frames are authored 4:3 with no GTE squash to compensate
* the widescreen stretch — pillarbox them at native 4:3 instead. Same for
* native-wide game frames that could not present wide (pin_43): canonical
* content is never stretched across the wide window. */
int dst_w = pin_43 ? 640 * tex_scale : g_logical_w;
int dst_h = 480 * tex_scale;
SDL_Rect dst = { (g_logical_w - dst_w) / 2, 0, dst_w, dst_h };
/* Match GL: short display bands letterbox inside the 4:3 rect. */
if (pin_43 && h > 0 && h < 240) {
int content_h = (dst_h * (int)h) / 240;
if (content_h < 1) content_h = 1;
dst.y = (dst_h - content_h) / 2;
dst.h = content_h;
}
/* Match GL depth24 nearest present — linear AA fringes short FMV bands
* into the pad/unwritten row. Restore AA scale mode for 15-bit frames. */
{
static int s_sw_scale_nearest = -1;
const int want_nearest = depth24_frame || !g_video_aa;
if (s_sw_scale_nearest != want_nearest) {
SDL_SetTextureScaleMode(sdl_texture,
want_nearest ? SDL_ScaleModeNearest
: SDL_ScaleModeLinear);
s_sw_scale_nearest = want_nearest;
}
}
/* Always clear black: hot-path RenderClear used to inherit the backend
* default draw color (often white), so letterbox margins under short FMV
* bands flashed as a bright strip on some X11 SDL drivers. */
SDL_SetRenderDrawColor(sdl_renderer, 0, 0, 0, 255);
SDL_RenderClear(sdl_renderer);
SDL_RenderCopy(sdl_renderer, sdl_texture, &src, &dst);
/* §33: remember active rect for resim hold-last (not full 640x512). */
s_sw_hold_src = src;
s_sw_hold_dst = dst;
s_sw_hold_valid = 1;
/* Vsync self-heal. The renderer is created with PRESENTVSYNC for
* tear-free output, but the wall-clock pacer above already holds
* 59.94 Hz, so driver vsync is redundant for timing. Under some
* driver states (observed: NVIDIA GL with the swap queue wedged)
* SwapBuffers blocks ~1.5 s per present, dragging the whole
* emulation to ~0.7 fps for minutes (freeze dump 1781045865:
* 8/8 main-thread samples inside wglSwapBuffers). If presents
* block pathologically several times in a row, drop driver vsync
* for the rest of the session; our own pacing keeps the rate. */
{
latency_ring_mark(LAT_SWAP_BEGIN);
const Uint64 t0 = SDL_GetPerformanceCounter();
SDL_RenderPresent(sdl_renderer);
const Uint64 t1 = SDL_GetPerformanceCounter();
latency_ring_mark(LAT_SWAP_END);
netplay_note_present();
const Uint64 freq = SDL_GetPerformanceFrequency();
const Uint64 present_ms = (t1 >= t0 && freq) ? ((t1 - t0) * 1000u) / freq : 0;
if (!g_present_vsync_disabled && present_ms > 250) {
g_present_slow_count++;
if (g_present_slow_count >= 3 &&
SDL_RenderSetVSync(sdl_renderer, 0) == 0) {
g_present_vsync_disabled = 1;
}
}
}
}
#endif
return ep;
}
static void sdl_vblank_present(void) {
NetplayVblankEpilogue ep = sdl_vblank_present_body();
/* Selfcheck span-end rewind: after present-body C++ RAII, before any
* further guest progress. Longjmps on success — keeps every resim load
* on the same VBlank boundary (BB fast-poll tails forked #2 vs #3). */
psx_selfcheck_flush_load();
if (!ep.do_epilogue)
return;
if (!psx_return_to_lobby_requested())
netplay_barrier_admit(ep.override);
/* Episode baseline applied during admit without longjmp — resume now that
* present-body C++ destructors have run (mirrors savestate BB-edge path). */
psx_netplay_rb_flush_resume();
if (ep.skip_pace || psx_return_to_lobby_requested())
return;
if (psx_netplay_is_resimulating() || psx_netplay_rb_tip_holding())
return;
if (!gpu_display_is_depth24() && psx_netplay_catchup_budget() > 0) {
psx_netplay_catchup_consume_frame();
return;
}
uint64_t perf_start = runtime_perf_section_begin();
frame_pacer_wait(&s_frame_pacer, g_frame_period_ms);
runtime_perf_section_end(perf_start, &g_runtime_perf.pacer_ticks);
latency_ring_mark(LAT_PACED);
}
#if defined(RECOMP_LAUNCHER)
// Host verification/inspection callbacks for the shared recomp-ui launcher.
// The launcher re-runs these on every disc/memory-card change so the "Disc
// verified" verdict + memcard block grids reflect the real images. The expected
// serial/CRC are passed via these file-scope statics (set just before
// recomp_launcher_run_window) because the C-ABI callback can't capture locals.
namespace {
std::string g_lnch_expected_serial;
uint32_t g_lnch_expected_crc = 0;
bool g_lnch_has_crc = false;
const char* g_lnch_argv0 = nullptr;
int ae_bios_verify(const char* bios_path, RecompLauncherCBiosVerify* out) {
if (!out) return 0;
std::memset(out, 0, sizeof(*out));
/* Empty path = use bundled OpenBIOS when this title allows it.
* Never needs_regen: switching to OpenBIOS is always a hot-swap. */
if (!bios_path || !bios_path[0]) {
out->needs_regen = 0;
if (s_openbios_allowed && psx_bios_bundled()) {
out->ok = 1;
std::snprintf(out->detail, sizeof(out->detail),
"Using bundled OpenBIOS.");
return 1;
}
/* Setup host: no BIOS backends linked yet — first Generate for
* game C will also emit OpenBIOS from redistributable openbios.bin.
* Selecting OpenBIOS itself still does not require a BIOS regen. */
if (s_openbios_allowed && psx_bios_registry_count == 0) {
out->ok = 1;
std::snprintf(out->detail, sizeof(out->detail),
"Using OpenBIOS (emitted on first Generate & "
"rebuild with game C; optional: pick SCPH1001).");
return 1;
}
std::snprintf(out->detail, sizeof(out->detail),
"PlayStation BIOS required (SCPH1001.BIN).");
return 1;
}
/* Match runtime resolve: relative picks like bios/SCPH1001.BIN must not
* depend on process cwd (build/ vs project root). Guard filesystem
* exceptions so a bad picker path cannot take down the setup wizard. */
try {
std::filesystem::path resolved =
resolve_bios_path(bios_path, g_lnch_argv0 ? g_lnch_argv0 : "");
const std::string open_path =
(!resolved.empty() ? resolved : std::filesystem::path(bios_path))
.string();
std::ifstream f(open_path, std::ios::binary | std::ios::ate);
if (!f.is_open()) {
std::snprintf(out->detail, sizeof(out->detail),
"BIOS file not found.");
return 1;
}
const std::streamoff size = f.tellg();
if (size != 512 * 1024) {
std::snprintf(out->detail, sizeof(out->detail),
"BIOS must be exactly 512 KiB (got %lld). Use "
"SCPH1001.BIN.",
(long long)size);
return 1;
}
std::vector<uint8_t> data((size_t)size);
if (!read_at(f, 0, data.data(), data.size())) {
std::snprintf(out->detail, sizeof(out->detail),
"Failed to read BIOS file.");
return 1;
}
const uint32_t crc = crc32_compute(data.data(), data.size());
if (crc != 0x37157331u) {
out->warn = 1;
std::snprintf(out->detail, sizeof(out->detail),
"CRC32 %08X (validated dump is SCPH1001 CRC32 "
"37157331).",
crc);
} else {
std::snprintf(out->detail, sizeof(out->detail),
"SCPH1001.BIN (CRC OK).");
}
/* Setup host (no backends yet): file is fine for first Generate. */
if (psx_bios_registry_count == 0) {
out->ok = 1;
return 1;
}
/* Built host: only accept images that have a linked backend.
* Otherwise Play would load mismatched dispatch and crash. */
uint32_t match_crc = 0;
uint64_t match_size = 0;
if (bios_backend_for_file(open_path, &match_crc, &match_size)) {
out->ok = 1;
return 1;
}
out->ok = 0;
out->needs_regen = 1;
std::snprintf(out->detail, sizeof(out->detail),
"This BIOS is not compiled into the current build. "
"Generate & rebuild to switch (or use OpenBIOS).");
return 1;
} catch (const std::exception& e) {
std::snprintf(out->detail, sizeof(out->detail),
"BIOS check failed: %s", e.what());
return 1;
} catch (...) {
std::snprintf(out->detail, sizeof(out->detail),
"BIOS check failed.");
return 1;
}
}
int ae_prepare_disc(const char* source_path, char* out_disc_path, size_t out_cap,
char* err_msg, size_t err_cap) {
if (!source_path || !source_path[0] || !out_disc_path || out_cap == 0) return 0;
out_disc_path[0] = '\0';
if (err_msg && err_cap) err_msg[0] = '\0';
namespace fs = std::filesystem;
std::error_code ec;
if (!fs::is_regular_file(source_path, ec)) {
if (err_msg && err_cap)
std::snprintf(err_msg, err_cap, "Source dump not found.");
return 0;
}
const fs::path exe_dir = exe_dir_from_argv(g_lnch_argv0 ? g_lnch_argv0 : "");
const fs::path root = find_upward(exe_dir, "tools/prepare_disc.py");
if (root.empty()) {
if (err_msg && err_cap)
std::snprintf(err_msg, err_cap,
"tools/prepare_disc.py not found near the executable.");
return 0;
}
const fs::path script = root / "tools" / "prepare_disc.py";
const fs::path out_dir = root / "motk";
fs::create_directories(out_dir, ec);
/* Prefer python3; fall back to python (Windows). */
const char* py = "python3";
#if defined(_WIN32)
/* On Windows `python` is the usual launcher; python3 may be absent. */
py = "python";
#endif
std::string cmd = std::string(py) + " \"" + script.string() + "\" \"" +
source_path + "\" --out-dir \"" + out_dir.string() + "\"";
#if !defined(_WIN32)
/* If python3 missing, retry with python. */
int rc = std::system(cmd.c_str());
if (rc != 0) {
cmd = std::string("python \"") + script.string() + "\" \"" + source_path +
"\" --out-dir \"" + out_dir.string() + "\"";
rc = std::system(cmd.c_str());
}
#else
int rc = std::system(cmd.c_str());
#endif
if (rc != 0) {
if (err_msg && err_cap)
std::snprintf(err_msg, err_cap,
"prepare_disc.py failed (exit %d). Check the dump is "
"2448 bytes/sector.",
rc);
return 0;
}
const fs::path cue =
out_dir / "Star Wars - Masters of Teras Kasi (USA).cue";
const fs::path bin =
out_dir / "Star Wars - Masters of Teras Kasi (USA).bin";
fs::path playable = fs::exists(cue, ec) ? cue : bin;
if (!fs::exists(playable, ec)) {
if (err_msg && err_cap)
std::snprintf(err_msg, err_cap,
"prepare_disc finished but no .cue/.bin was written.");
return 0;
}
playable = normalize_disc_path_for_launch(playable);
std::snprintf(out_disc_path, out_cap, "%s", playable.string().c_str());
return 1;
}
int ae_disc_verify(const char* disc_path, RecompLauncherCDiscVerify* out) {
if (!disc_path || !disc_path[0] || !out) return 0;
PSXRecompV4::DiscIdentity id = PSXRecompV4::identify_disc(
disc_path, g_lnch_expected_serial, g_lnch_expected_crc,
g_lnch_has_crc, /*compute_crc*/ g_lnch_has_crc);
const std::string& serial = !id.detected_serial.empty()
? id.detected_serial : g_lnch_expected_serial;
std::snprintf(out->serial, sizeof(out->serial), "%s", serial.c_str());
std::snprintf(out->region, sizeof(out->region), "%s", id.region.c_str());
out->iso_ok = id.has_header ? 1 : 0;
// Verdict shown by the launcher.
if (!id.opened || !id.has_header) out->verdict = 3; // bad
else if (id.expected_serial_given && !id.serial_matches) out->verdict = 3; // wrong disc
else if (id.expected_crc_given && id.crc_computed && !id.crc_matches) out->verdict = 2; // warn
else out->verdict = 1; // ok
return 1;
}
int ae_memcard_inspect(const char* card_path, RecompLauncherCMemcard* out) {
if (!card_path || !card_path[0] || !out) return 0;
MemcardSummary s;
if (memcard_summary_path(card_path, &s) != 0) return 0;
out->valid = s.valid;
out->used_blocks = s.used_blocks;
for (int i = 0; i < 15; ++i) out->block_used[i] = s.block_used[i];
return 1;
}
std::string g_lnch_netplay_game_name;
int g_lnch_game_players = 2; /* from game.toml; lobby max_slots default */
std::filesystem::path g_lnch_settings_path;
std::string g_lnch_lobby_url;
RecompLauncherCNetplayLaunch g_lnch_pending_direct_launch{};
int g_lnch_lobby_input_delay = 2;
int g_lnch_lobby_input_prediction = 4;
int g_lnch_force_input_relay = 0;
/* Default on: CGNAT-safe relay-only ICE (BattleShip-style online path). */
int g_lnch_force_turn = 1;
/* Lobby default on; host “Disable Rollback” clears this → delay_sync. */
int g_lnch_rollback = 1;
int g_lnch_host_max_slots = 2;
/* Delay-sync READY/START waits for every seat in slot_count. Use seated
* players (not lobby max_slots) so a 3/5 room can start. Sparse seats
* (moved) still need width covering the highest occupied index. */
static int ae_np_session_slot_count(int player_count, int max_slots,
int local_slot, int game_fallback) {
int slots = player_count >= 2 ? player_count
: (max_slots >= 2 ? max_slots
: (game_fallback >= 2 ? game_fallback : 2));
if (local_slot + 1 > slots) slots = local_slot + 1;
if (slots < 2) slots = 2;
if (slots > PSX_MAX_PLAYERS) slots = PSX_MAX_PLAYERS;
return slots;
}
bool g_lnch_hosting_lan = false;
bool g_lnch_joined_lan = false;
/* Join Direct / cross-machine: membership via UDP, not the local file. */
bool g_lnch_remote_lan = false;
std::string g_lnch_lan_endpoint;
uint32_t g_lnch_lan_session_id = 1;
static constexpr int kAeLanMaxSlots = RECOMP_LAUNCHER_NETPLAY_MAX_MEMBERS;
struct AeLanLobbyState {
std::string name;
std::string game;
std::string endpoint;
std::string host_name;
std::string joiner_name; /* legacy / first guest mirror */
std::string password;
bool started = false;
int host_slot = 0;
int max_slots = 2;
uint32_t session_id = 1;
std::string slot_name[kAeLanMaxSlots];
std::string slot_id[kAeLanMaxSlots]; /* stable per-seat player id */
};
AeLanLobbyState g_lnch_remote_lan_state{};
int g_lnch_lan_my_slot = -1;
std::string g_lnch_lan_player_id; /* local process identity for LAN seats */
static int ae_np_lan_occupied(const AeLanLobbyState& state);
static int ae_np_lan_endpoint_port(const std::string& endpoint);
#ifdef _WIN32
using AeLanSock = SOCKET;
static constexpr AeLanSock kAeLanSockInvalid = INVALID_SOCKET;
#else
using AeLanSock = int;
static constexpr AeLanSock kAeLanSockInvalid = -1;
#endif
static void ae_np_lan_sock_close(AeLanSock* s);
static bool ae_np_lan_set_nonblock(AeLanSock s);
AeLanSock g_lnch_lan_udp = kAeLanSockInvalid;
sockaddr_in g_lnch_lan_peers[kAeLanMaxSlots]{};
bool g_lnch_lan_peer_ok[kAeLanMaxSlots]{};
uint32_t g_lnch_lan_join_pulse_ms = 0;
/* LAN list latency from last Refresh probe; -1 unknown. */
int g_lnch_lan_latency_ms = -1;
/* Cross-machine LAN lobby discovery (UDP broadcast browse/beacon).
* The on-disk netplay_lan_lobby.txt registry only works for same-cwd /
* same-machine; remote peers discover hosts via MOTK1 BROWSE→BEACON. */
static constexpr int kAeLanDiscoverMax = 16;
static constexpr int kAeLanBrowsePortLo = 7777;
static constexpr int kAeLanBrowsePortHi = 7808; /* inclusive */
static constexpr uint32_t kAeLanDiscoverStaleMs = 8000u;
struct AeLanDiscovered {
char endpoint[64];
char name[64];
char game[64];
int player_count = 0;
int max_slots = 2;
int has_password = 0;
int latency_ms = -1;
int input_delay = 2;
int input_prediction = 4;
int rollback = 1;
uint32_t session_id = 1;
uint32_t last_seen_ms = 0;
};
static AeLanDiscovered g_lnch_lan_discovered[kAeLanDiscoverMax];
static int g_lnch_lan_discovered_n = 0;
static uint32_t g_lnch_lan_beacon_announce_ms = 0;
std::filesystem::path ae_np_lan_file() {
return std::filesystem::current_path() / "netplay_lan_lobby.txt";
}
static void ae_np_lan_sock_set_broadcast(AeLanSock s) {
if (s == kAeLanSockInvalid) return;
#ifdef _WIN32
BOOL on = TRUE;
setsockopt(s, SOL_SOCKET, SO_BROADCAST, (const char*)&on, sizeof(on));
#else
int on = 1;
setsockopt(s, SOL_SOCKET, SO_BROADCAST, &on, sizeof(on));
#endif
}
static void ae_np_lan_prune_discovered(void) {
const uint32_t now = SDL_GetTicks();
int w = 0;
for (int i = 0; i < g_lnch_lan_discovered_n; ++i) {
if ((uint32_t)(now - g_lnch_lan_discovered[i].last_seen_ms) >
kAeLanDiscoverStaleMs)
continue;
if (w != i)
g_lnch_lan_discovered[w] = g_lnch_lan_discovered[i];
++w;
}
g_lnch_lan_discovered_n = w;
}
static int ae_np_lan_discovered_find(const char* endpoint) {
if (!endpoint || !endpoint[0]) return -1;
for (int i = 0; i < g_lnch_lan_discovered_n; ++i) {
if (std::strcmp(g_lnch_lan_discovered[i].endpoint, endpoint) == 0)
return i;
}
return -1;
}
static void ae_np_lan_discovered_upsert(const AeLanDiscovered& in) {
if (!in.endpoint[0]) return;
const int idx = ae_np_lan_discovered_find(in.endpoint);
if (idx >= 0) {
AeLanDiscovered& e = g_lnch_lan_discovered[idx];
e = in;
return;
}
if (g_lnch_lan_discovered_n >= kAeLanDiscoverMax) {
/* Drop oldest. */
int oldest = 0;
for (int i = 1; i < g_lnch_lan_discovered_n; ++i) {
if (g_lnch_lan_discovered[i].last_seen_ms <
g_lnch_lan_discovered[oldest].last_seen_ms)
oldest = i;
}
g_lnch_lan_discovered[oldest] = in;
return;
}
g_lnch_lan_discovered[g_lnch_lan_discovered_n++] = in;
}
static int ae_np_lan_format_beacon(char* buf, size_t cap,
const AeLanLobbyState& st) {
if (!buf || cap < 32) return -1;
const int players = ae_np_lan_occupied(st);
const int max_slots = st.max_slots >= 2 ? st.max_slots : 2;
const int has_pw = st.password.empty() ? 0 : 1;
const uint32_t sid = st.session_id ? st.session_id : 1u;
int delay = g_lnch_lobby_input_delay;
int pred = g_lnch_lobby_input_prediction;
if (delay < 2) delay = 2;
if (delay > 20) delay = 20;
if (pred < 2) pred = 2;
if (pred > 16) pred = 16;
return std::snprintf(
buf, cap,
"MOTK1 BEACON\n%s\n%s\n%s\n%d\n%d\n%d\n%u\n%d\n%d\n%d\n",
st.name.empty() ? "LAN Lobby" : st.name.c_str(),
st.game.empty() ? "PSX" : st.game.c_str(),
st.endpoint.c_str(),
players, max_slots, has_pw, (unsigned)sid,
delay, pred, g_lnch_rollback ? 1 : 0);
}
/* Parse BEACON; prefer reply source IP + advertised port for joinability. */
static int ae_np_lan_parse_beacon(char* buf, const sockaddr_in* from,
int rtt_ms) {
if (!buf || std::strncmp(buf, "MOTK1 BEACON\n", 13) != 0) return -1;
char* p = buf + 13;
char* lines[10] = {};
for (int i = 0; i < 10; ++i) {
lines[i] = p;
char* nl = std::strchr(p, '\n');
if (!nl) {
if (i < 6) return -1;
break;
}
*nl = '\0';
p = nl + 1;
}
if (!lines[0] || !lines[1] || !lines[2]) return -1;
AeLanDiscovered d{};
std::snprintf(d.name, sizeof(d.name), "%s", lines[0]);
std::snprintf(d.game, sizeof(d.game), "%s", lines[1]);
const int adv_port = ae_np_lan_endpoint_port(lines[2]);
int port = adv_port > 0 ? adv_port : 7777;
if (from) {
char ip[64];
if (inet_ntop(AF_INET, &from->sin_addr, ip, sizeof(ip)))
std::snprintf(d.endpoint, sizeof(d.endpoint), "%s:%d", ip, port);
else
std::snprintf(d.endpoint, sizeof(d.endpoint), "%s", lines[2]);
} else {
std::snprintf(d.endpoint, sizeof(d.endpoint), "%s", lines[2]);
}
d.player_count = lines[3] ? std::atoi(lines[3]) : 0;
d.max_slots = lines[4] ? std::atoi(lines[4]) : 2;
if (d.max_slots < 2) d.max_slots = 2;
if (d.max_slots > kAeLanMaxSlots) d.max_slots = kAeLanMaxSlots;
d.has_password = lines[5] ? (std::atoi(lines[5]) != 0) : 0;
d.session_id = lines[6]
? (uint32_t)std::strtoul(lines[6], nullptr, 10) : 1u;
if (!d.session_id) d.session_id = 1u;
d.input_delay = lines[7] ? std::atoi(lines[7]) : 2;
d.input_prediction = lines[8] ? std::atoi(lines[8]) : 4;
d.rollback = lines[9] ? (std::atoi(lines[9]) != 0) : 1;
if (d.input_delay < 2) d.input_delay = 2;
if (d.input_delay > 20) d.input_delay = 20;
if (d.input_prediction < 2) d.input_prediction = 2;
if (d.input_prediction > 16) d.input_prediction = 16;
d.latency_ms = rtt_ms;
d.last_seen_ms = SDL_GetTicks();
ae_np_lan_discovered_upsert(d);
return 0;
}
static void ae_np_lan_broadcast_msg(AeLanSock s, int port, const char* msg) {
if (s == kAeLanSockInvalid || !msg || port <= 0 || port > 65535) return;
sockaddr_in to{};
to.sin_family = AF_INET;
to.sin_port = htons((uint16_t)port);
to.sin_addr.s_addr = htonl(INADDR_BROADCAST);
const int n = (int)std::strlen(msg);
#ifdef _WIN32
sendto(s, msg, n, 0, (const sockaddr*)&to, sizeof(to));
#else
sendto(s, msg, (size_t)n, 0, (const sockaddr*)&to, sizeof(to));
#endif
}
/* Sync browse: broadcast BROWSE across the common lobby port range and
* collect BEACON replies for wait_ms. */
static void ae_np_lan_browse(uint32_t wait_ms) {
#ifdef _WIN32
WSADATA wsa;
WSAStartup(MAKEWORD(2, 2), &wsa);
#endif
AeLanSock s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (s == kAeLanSockInvalid) return;
if (!ae_np_lan_set_nonblock(s)) {
ae_np_lan_sock_close(&s);
return;
}
ae_np_lan_sock_set_broadcast(s);
sockaddr_in bind_addr{};
bind_addr.sin_family = AF_INET;
bind_addr.sin_addr.s_addr = htonl(INADDR_ANY);
bind_addr.sin_port = htons(0);
if (bind(s, (sockaddr*)&bind_addr, sizeof(bind_addr)) != 0) {
ae_np_lan_sock_close(&s);
return;
}
const char browse[] = "MOTK1 BROWSE\n";
const uint32_t t0 = SDL_GetTicks();
for (int port = kAeLanBrowsePortLo; port <= kAeLanBrowsePortHi; ++port)
ae_np_lan_broadcast_msg(s, port, browse);
const uint32_t deadline = t0 + (wait_ms ? wait_ms : 250u);
while ((int32_t)(deadline - SDL_GetTicks()) > 0) {
char buf[1024];
sockaddr_in from{};
#ifdef _WIN32
int fromlen = (int)sizeof(from);
const int n = recvfrom(s, buf, (int)sizeof(buf) - 1, 0,
(sockaddr*)&from, &fromlen);
#else
socklen_t fromlen = sizeof(from);
const int n = (int)recvfrom(s, buf, sizeof(buf) - 1, 0,
(sockaddr*)&from, &fromlen);
#endif
if (n > 0) {
buf[n] = '\0';
const int rtt = (int)(SDL_GetTicks() - t0);
(void)ae_np_lan_parse_beacon(buf, &from, rtt);
} else {
SDL_Delay(5);
}
}
ae_np_lan_sock_close(&s);
ae_np_lan_prune_discovered();
}
static void ae_np_lan_apply_discovered_caps(const char* endpoint) {
const int idx = ae_np_lan_discovered_find(endpoint);
if (idx < 0) return;
const AeLanDiscovered& d = g_lnch_lan_discovered[idx];
g_lnch_lobby_input_delay = d.input_delay;
g_lnch_lobby_input_prediction = d.input_prediction;
g_lnch_rollback = d.rollback ? 1 : 0;
}
static int ae_np_lan_fill_lobby_from_discovered(
int discovered_index, RecompLauncherCNetplayLobby* out) {
if (!out || discovered_index < 0 ||
discovered_index >= g_lnch_lan_discovered_n)
return 0;
const AeLanDiscovered& d = g_lnch_lan_discovered[discovered_index];
std::snprintf(out->lobby_id, sizeof(out->lobby_id), "lan:%s", d.endpoint);
std::snprintf(out->name, sizeof(out->name), "LAN - %s",
d.name[0] ? d.name : "Lobby");
std::snprintf(out->game_name, sizeof(out->game_name), "%s",
d.game[0] ? d.game : "PSX");
out->game_version[0] = '\0';
out->player_count = d.player_count;
out->max_slots = d.max_slots;
out->has_password = d.has_password;
out->latency_ms = d.latency_ms;
return 1;
}
static void ae_np_lan_sock_close(AeLanSock* s) {
if (!s || *s == kAeLanSockInvalid) return;
#ifdef _WIN32
closesocket(*s);
#else
close(*s);
#endif
*s = kAeLanSockInvalid;
}
static void ae_np_lan_udp_close(void) {
ae_np_lan_sock_close(&g_lnch_lan_udp);
for (int i = 0; i < kAeLanMaxSlots; ++i)
g_lnch_lan_peer_ok[i] = false;
}
static void ae_np_lan_sync_legacy_names(AeLanLobbyState& state) {
if (state.max_slots < 2) state.max_slots = 2;
if (state.max_slots > kAeLanMaxSlots) state.max_slots = kAeLanMaxSlots;
if (state.host_slot < 0 || state.host_slot >= state.max_slots)
state.host_slot = 0;
if (!state.slot_name[state.host_slot].empty())
state.host_name = state.slot_name[state.host_slot];
else if (!state.host_name.empty())
state.slot_name[state.host_slot] = state.host_name;
state.joiner_name.clear();
for (int i = 0; i < state.max_slots; ++i) {
if (i == state.host_slot) continue;
if (!state.slot_name[i].empty()) {
state.joiner_name = state.slot_name[i];
break;
}
}
}
static int ae_np_lan_occupied(const AeLanLobbyState& state) {
int n = 0;
for (int i = 0; i < state.max_slots && i < kAeLanMaxSlots; ++i)
if (!state.slot_name[i].empty()) ++n;
return n;
}
static int ae_np_lan_find_free_slot(const AeLanLobbyState& state) {
for (int i = 0; i < state.max_slots && i < kAeLanMaxSlots; ++i) {
if (i == state.host_slot) continue;
if (state.slot_name[i].empty()) return i;
}
return -1;
}
/* Guest seat by display name. Never match host_slot — same-machine
* instances often share settings.toml player_name, and reclaiming the
* host seat made JOIN "succeed" with no visible joiner. */
static int ae_np_lan_find_guest_slot_by_name(const AeLanLobbyState& state,
const char* name) {
if (!name || !name[0]) return -1;
for (int i = 0; i < state.max_slots && i < kAeLanMaxSlots; ++i) {
if (i == state.host_slot) continue;
if (state.slot_name[i] == name) return i;
}
return -1;
}
static int ae_np_lan_find_slot_by_id(const AeLanLobbyState& state,
const char* player_id) {
if (!player_id || !player_id[0]) return -1;
for (int i = 0; i < state.max_slots && i < kAeLanMaxSlots; ++i) {
if (state.slot_id[i] == player_id) return i;
}
return -1;
}
/* Stable per-process LAN identity (prefer WS player_id when connected). */
static const char* ae_np_lan_local_player_id(void) {
if (!g_lnch_lan_player_id.empty()) return g_lnch_lan_player_id.c_str();
const char* ws = psx_lobby_player_id();
if (ws && ws[0]) {
g_lnch_lan_player_id = ws;
return g_lnch_lan_player_id.c_str();
}
unsigned char b[16];
bool ok = false;
#if !defined(_WIN32)
FILE* ur = std::fopen("/dev/urandom", "rb");
if (ur) {
ok = std::fread(b, 1, sizeof(b), ur) == sizeof(b);
std::fclose(ur);
}
#endif
if (!ok) {
uint64_t t = (uint64_t)SDL_GetTicks()
^ ((uint64_t)(uintptr_t)&g_lnch_lan_player_id << 32)
^ ((uint64_t)SDL_GetPerformanceCounter() << 17);
for (size_t i = 0; i < sizeof(b); ++i) {
t = t * 6364136223846793005ull + 1ull;
b[i] = (unsigned char)(t >> 56);
}
}
char hex[40];
std::snprintf(hex, sizeof(hex),
"%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x",
b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7], b[8], b[9],
b[10], b[11], b[12], b[13], b[14], b[15]);
g_lnch_lan_player_id = hex;
return g_lnch_lan_player_id.c_str();
}
/* Exact-name uniqueness among seats: Alex, Alex (2), Alex (3), … */
static std::string ae_np_lan_unique_display_name(const AeLanLobbyState& state,
const char* requested,
int skip_slot) {
std::string base = (requested && requested[0]) ? requested : "Player";
auto taken = [&](const std::string& n) {
for (int i = 0; i < state.max_slots && i < kAeLanMaxSlots; ++i) {
if (i == skip_slot) continue;
if (state.slot_name[i] == n) return true;
}
return false;
};
if (!taken(base)) return base;
for (int n = 2; n <= 64; ++n) {
char cand[96];
std::snprintf(cand, sizeof(cand), "%s (%d)", base.c_str(), n);
if (!taken(cand)) return cand;
}
return base + " (" + std::string(ae_np_lan_local_player_id()).substr(0, 8) + ")";
}
/* Seat or reconnect a guest by player_id; uniquify display name on insert. */
static int ae_np_lan_seat_guest(AeLanLobbyState& st, const char* player_id,
const char* requested_name) {
if (!player_id || !player_id[0]) return -1;
int slot = ae_np_lan_find_slot_by_id(st, player_id);
if (slot >= 0) {
if (slot == st.host_slot) return -1;
st.slot_name[slot] =
ae_np_lan_unique_display_name(st, requested_name, slot);
return slot;
}
slot = ae_np_lan_find_free_slot(st);
if (slot < 0) return -1;
st.slot_id[slot] = player_id;
st.slot_name[slot] =
ae_np_lan_unique_display_name(st, requested_name, -1);
return slot;
}
static void ae_np_lan_clear_peer_slot(int slot) {
if (slot < 0 || slot >= kAeLanMaxSlots) return;
g_lnch_lan_peer_ok[slot] = false;
}
static void ae_np_lan_set_peer_slot(int slot, const sockaddr_in& addr) {
if (slot < 0 || slot >= kAeLanMaxSlots) return;
g_lnch_lan_peers[slot] = addr;
g_lnch_lan_peer_ok[slot] = true;
}
static int ae_np_lan_endpoint_port(const std::string& endpoint) {
const size_t colon = endpoint.rfind(':');
if (colon == std::string::npos) return 7777;
const int p = std::atoi(endpoint.c_str() + colon + 1);
return (p > 0 && p <= 65535) ? p : 7777;
}
static bool ae_np_lan_endpoint_host(const std::string& endpoint, char* host,
size_t host_len) {
if (!host || host_len == 0) return false;
const size_t colon = endpoint.rfind(':');
if (colon == std::string::npos || colon == 0) return false;
if (colon >= host_len) return false;
std::memcpy(host, endpoint.data(), colon);
host[colon] = '\0';
return host[0] != '\0';
}
static bool ae_np_lan_set_nonblock(AeLanSock s) {
#ifdef _WIN32
u_long mode = 1;
return ioctlsocket(s, FIONBIO, &mode) == 0;
#else
const int fl = fcntl(s, F_GETFL, 0);
return fl >= 0 && fcntl(s, F_SETFL, fl | O_NONBLOCK) == 0;
#endif
}
/* Exclusive bind probe (no SO_REUSEADDR) so a busy port is detected. */
static bool ae_np_udp_port_available(int port) {
if (port <= 0 || port > 65535) return false;
#ifdef _WIN32
WSADATA wsa;
WSAStartup(MAKEWORD(2, 2), &wsa);
#endif
AeLanSock s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (s == kAeLanSockInvalid) return false;
sockaddr_in addr{};
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = htonl(INADDR_ANY);
addr.sin_port = htons((uint16_t)port);
const bool ok = (bind(s, (sockaddr*)&addr, sizeof(addr)) == 0);
ae_np_lan_sock_close(&s);
return ok;
}
/* Online create: try preferred, then the next few ports. */
static int ae_np_find_free_udp_port(int preferred) {
if (preferred <= 0 || preferred > 65535) preferred = 7777;
for (int i = 0; i < 32; ++i) {
const int p = preferred + i;
if (p > 65535) break;
if (ae_np_udp_port_available(p)) return p;
}
return -1;
}
static bool ae_np_endpoint_replace_port(char* endpoint, size_t cap, int port) {
if (!endpoint || cap < 4 || port <= 0 || port > 65535) return false;
char host[64];
if (!ae_np_lan_endpoint_host(endpoint, host, sizeof(host))) {
if (endpoint[0] == ':' || !endpoint[0])
std::snprintf(host, sizeof(host), "0.0.0.0");
else
return false;
}
const int n = std::snprintf(endpoint, cap, "%s:%d", host, port);
return n > 0 && (size_t)n < cap;
}
static bool ae_np_lan_udp_ensure(bool bind_port, int port) {
#ifdef _WIN32
WSADATA wsa;
WSAStartup(MAKEWORD(2, 2), &wsa);
#endif
if (g_lnch_lan_udp == kAeLanSockInvalid) {
g_lnch_lan_udp = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (g_lnch_lan_udp == kAeLanSockInvalid) return false;
if (!ae_np_lan_set_nonblock(g_lnch_lan_udp)) {
ae_np_lan_udp_close();
return false;
}
/* Do not SO_REUSEADDR on the host lobby port — a second host on the
* same port must fail so we can surface "port in use". */
if (bind_port) {
sockaddr_in addr{};
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = htonl(INADDR_ANY);
addr.sin_port = htons((uint16_t)port);
if (bind(g_lnch_lan_udp, (sockaddr*)&addr, sizeof(addr)) != 0) {
ae_np_lan_udp_close();
return false;
}
}
}
return true;
}
static void ae_np_lan_udp_sendto(const sockaddr_in& to, const char* msg) {
if (g_lnch_lan_udp == kAeLanSockInvalid || !msg) return;
const int n = (int)std::strlen(msg);
#ifdef _WIN32
sendto(g_lnch_lan_udp, msg, n, 0, (const sockaddr*)&to, sizeof(to));
#else
sendto(g_lnch_lan_udp, msg, (size_t)n, 0, (const sockaddr*)&to, sizeof(to));
#endif
}
bool ae_np_read_lan_state(AeLanLobbyState* state) {
if (!state) return false;
if (g_lnch_remote_lan) {
*state = g_lnch_remote_lan_state;
ae_np_lan_sync_legacy_names(*state);
return !state->endpoint.empty();
}
std::ifstream f(ae_np_lan_file());
if (!f) return false;
std::string started, host_slot, session, max_slots_s;
std::getline(f, state->name);
std::getline(f, state->game);
std::getline(f, state->endpoint);
std::getline(f, state->host_name);
std::getline(f, state->joiner_name);
std::getline(f, started);
std::getline(f, host_slot);
std::getline(f, state->password);
std::getline(f, session);
state->started = started == "1";
state->host_slot = std::atoi(host_slot.c_str());
if (state->host_slot < 0) state->host_slot = 0;
state->session_id = 1;
if (!session.empty()) {
const unsigned v = (unsigned)std::strtoul(session.c_str(), nullptr, 10);
if (v) state->session_id = (uint32_t)v;
}
state->max_slots = 2;
for (int i = 0; i < kAeLanMaxSlots; ++i) {
state->slot_name[i].clear();
state->slot_id[i].clear();
}
if (std::getline(f, max_slots_s)) {
int ms = std::atoi(max_slots_s.c_str());
if (ms >= 2 && ms <= kAeLanMaxSlots) state->max_slots = ms;
for (int i = 0; i < state->max_slots; ++i)
std::getline(f, state->slot_name[i]);
for (int i = 0; i < state->max_slots; ++i) {
if (!std::getline(f, state->slot_id[i]))
state->slot_id[i].clear();
}
} else {
/* Legacy 2P file: host + single joiner. */
state->slot_name[state->host_slot == 1 ? 1 : 0] = state->host_name;
const int guest = state->host_slot == 1 ? 0 : 1;
state->slot_name[guest] = state->joiner_name;
}
ae_np_lan_sync_legacy_names(*state);
return !state->endpoint.empty();
}
bool ae_np_write_lan_state(const AeLanLobbyState& state_in) {
AeLanLobbyState state = state_in;
ae_np_lan_sync_legacy_names(state);
if (g_lnch_remote_lan) {
g_lnch_remote_lan_state = state;
return true;
}
std::ofstream f(ae_np_lan_file(), std::ios::trunc);
if (!f) return false;
const uint32_t sid = state.session_id ? state.session_id : 1u;
f << state.name << "\n"
<< state.game << "\n"
<< state.endpoint << "\n"
<< state.host_name << "\n"
<< state.joiner_name << "\n"
<< (state.started ? "1" : "0") << "\n"
<< state.host_slot << "\n"
<< state.password << "\n"
<< sid << "\n"
<< state.max_slots << "\n";
for (int i = 0; i < state.max_slots && i < kAeLanMaxSlots; ++i)
f << state.slot_name[i] << "\n";
for (int i = 0; i < state.max_slots && i < kAeLanMaxSlots; ++i)
f << state.slot_id[i] << "\n";
return (bool)f;
}
static void ae_np_lan_send_update_to_peers(const AeLanLobbyState& state_in) {
AeLanLobbyState state = state_in;
ae_np_lan_sync_legacy_names(state);
char msg[1536];
int off = std::snprintf(msg, sizeof(msg),
"MOTK3 UPDATE\n%d\n%d\n%d\n%u\n",
state.max_slots, state.host_slot,
state.started ? 1 : 0,
(unsigned)(state.session_id ? state.session_id : 1u));
for (int i = 0; i < state.max_slots && i < kAeLanMaxSlots && off > 0 &&
off < (int)sizeof(msg) - 128; ++i) {
off += std::snprintf(msg + off, sizeof(msg) - (size_t)off, "%s\n%s\n",
state.slot_id[i].c_str(),
state.slot_name[i].c_str());
}
if (off <= 0) return;
for (int i = 0; i < kAeLanMaxSlots; ++i) {
if (!g_lnch_lan_peer_ok[i]) continue;
ae_np_lan_udp_sendto(g_lnch_lan_peers[i], msg);
}
}
static void ae_np_lan_atexit_cleanup(void) {
if (!g_lnch_hosting_lan) return;
std::error_code ec;
std::filesystem::remove(ae_np_lan_file(), ec);
g_lnch_hosting_lan = false;
}
/* Returns false if the lobby UDP port cannot be bound (in use). */
bool ae_np_write_lan_lobby(const char* name, const char* endpoint,
const char* password, int max_slots) {
ae_np_lan_udp_close();
g_lnch_remote_lan = false;
g_lnch_remote_lan_state = {};
g_lnch_lan_my_slot = 0;
AeLanLobbyState state;
state.name = name && name[0] ? name : "LAN Lobby";
state.game = g_lnch_netplay_game_name.empty() ? "PSX" : g_lnch_netplay_game_name;
state.endpoint = endpoint && endpoint[0] ? endpoint : "127.0.0.1:7777";
state.host_name = psx_lobby_display_name();
if (state.host_name.empty()) state.host_name = "Host";
state.password = password ? password : "";
if (max_slots < 2) max_slots = 2;
if (max_slots > kAeLanMaxSlots) max_slots = kAeLanMaxSlots;
state.max_slots = max_slots;
state.host_slot = 0;
state.slot_name[0] = state.host_name;
state.slot_id[0] = ae_np_lan_local_player_id();
const int port = ae_np_lan_endpoint_port(state.endpoint);
if (!ae_np_udp_port_available(port) ||
!ae_np_lan_udp_ensure(true, port)) {
ae_np_lan_udp_close();
return false;
}
if (!ae_np_write_lan_state(state)) {
ae_np_lan_udp_close();
return false;
}
g_lnch_hosting_lan = true;
g_lnch_joined_lan = false;
g_lnch_lan_endpoint = state.endpoint;
static bool atexit_hooked = false;
if (!atexit_hooked) {
std::atexit(ae_np_lan_atexit_cleanup);
atexit_hooked = true;
}
return true;
}
int ae_np_read_lan_lobby(RecompLauncherCNetplayLobby* out) {
if (!out) return 0;
AeLanLobbyState state;
if (!ae_np_read_lan_state(&state)) return 0;
std::snprintf(out->lobby_id, sizeof(out->lobby_id), "lan:%s", state.endpoint.c_str());
std::snprintf(out->name, sizeof(out->name), "LAN - %s",
state.name.empty() ? "Lobby" : state.name.c_str());
std::snprintf(out->game_name, sizeof(out->game_name), "%s",
state.game.empty() ? "PSX" : state.game.c_str());
out->player_count = ae_np_lan_occupied(state);
out->max_slots = state.max_slots >= 2 ? state.max_slots
: (g_lnch_host_max_slots >= 2 ? g_lnch_host_max_slots
: (g_lnch_game_players >= 2 ? g_lnch_game_players : 2));
if (out->max_slots > PSX_MAX_PLAYERS) out->max_slots = PSX_MAX_PLAYERS;
if (out->max_slots > kAeLanMaxSlots) out->max_slots = kAeLanMaxSlots;
out->has_password = state.password.empty() ? 0 : 1;
out->latency_ms = g_lnch_hosting_lan ? 0 : g_lnch_lan_latency_ms;
return 1;
}
static bool ae_np_remote_has_same_name_as_lan(const char* lan_display_name) {
static constexpr const char kLanPrefix[] = "LAN - ";
const char* base = lan_display_name;
if (base && std::strncmp(base, kLanPrefix, sizeof(kLanPrefix) - 1) == 0)
base += sizeof(kLanPrefix) - 1;
if (!base || !base[0]) return false;
for (int i = 0; i < psx_lobby_list_count(); ++i) {
PsxLobbyRow row{};
if (!psx_lobby_list_get(i, &row)) continue;
if (std::strcmp(row.name, base) == 0) return true;
}
return false;
}
static bool ae_np_read_lan_file_state(AeLanLobbyState* state) {
if (!state) return false;
const bool prior = g_lnch_remote_lan;
g_lnch_remote_lan = false;
const bool ok = ae_np_read_lan_state(state);
g_lnch_remote_lan = prior;
return ok;
}
/* Probe LAN host; returns RTT ms, or -1 on timeout/failure. */
static int ae_np_lan_probe_rtt_ms(const std::string& endpoint, uint32_t timeout_ms) {
char host[64];
if (!ae_np_lan_endpoint_host(endpoint, host, sizeof(host))) return -1;
#ifdef _WIN32
WSADATA wsa;
WSAStartup(MAKEWORD(2, 2), &wsa);
#endif
AeLanSock s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (s == kAeLanSockInvalid) return -1;
if (!ae_np_lan_set_nonblock(s)) {
ae_np_lan_sock_close(&s);
return -1;
}
sockaddr_in to{};
to.sin_family = AF_INET;
to.sin_port = htons((uint16_t)ae_np_lan_endpoint_port(endpoint));
if (inet_pton(AF_INET, host, &to.sin_addr) != 1) {
ae_np_lan_sock_close(&s);
return -1;
}
const char ping[] = "MOTK1 PING\n";
const uint32_t t0 = SDL_GetTicks();
#ifdef _WIN32
sendto(s, ping, (int)sizeof(ping) - 1, 0, (const sockaddr*)&to, sizeof(to));
#else
sendto(s, ping, sizeof(ping) - 1, 0, (const sockaddr*)&to, sizeof(to));
#endif
const uint32_t deadline = t0 + timeout_ms;
int rtt = -1;
while ((int32_t)(deadline - SDL_GetTicks()) > 0) {
char buf[64];
sockaddr_in from{};
#ifdef _WIN32
int fromlen = (int)sizeof(from);
const int n = recvfrom(s, buf, (int)sizeof(buf) - 1, 0,
(sockaddr*)&from, &fromlen);
#else
socklen_t fromlen = sizeof(from);
const int n = (int)recvfrom(s, buf, sizeof(buf) - 1, 0,
(sockaddr*)&from, &fromlen);
#endif
if (n > 0) {
buf[n] = '\0';
if (std::strncmp(buf, "MOTK1 PONG", 10) == 0) {
rtt = (int)(SDL_GetTicks() - t0);
break;
}
}
SDL_Delay(5);
}
ae_np_lan_sock_close(&s);
return rtt;
}
static bool ae_np_lan_probe_host_ms(const std::string& endpoint, uint32_t timeout_ms) {
return ae_np_lan_probe_rtt_ms(endpoint, timeout_ms) >= 0;
}
static bool ae_np_lan_probe_host(const std::string& endpoint) {
return ae_np_lan_probe_host_ms(endpoint, 200u);
}
static int ae_np_lan_parse_motk2_update(char* body, AeLanLobbyState* out) {
if (!body || !out) return -1;
char* lines[8] = {};
char* p = body;
for (int i = 0; i < 4; ++i) {
lines[i] = p;
char* nl = std::strchr(p, '\n');
if (!nl) return -1;
*nl = '\0';
p = nl + 1;
}
int max_slots = std::atoi(lines[0]);
int host_slot = std::atoi(lines[1]);
int started = std::atoi(lines[2]);
unsigned sid = (unsigned)std::strtoul(lines[3], nullptr, 10);
if (max_slots < 2) max_slots = 2;
if (max_slots > kAeLanMaxSlots) max_slots = kAeLanMaxSlots;
if (host_slot < 0 || host_slot >= max_slots) host_slot = 0;
out->max_slots = max_slots;
out->host_slot = host_slot;
out->started = started != 0;
out->session_id = sid ? (uint32_t)sid : 1u;
for (int i = 0; i < kAeLanMaxSlots; ++i) {
out->slot_name[i].clear();
out->slot_id[i].clear();
}
for (int i = 0; i < max_slots; ++i) {
char* nl = std::strchr(p, '\n');
if (nl) {
*nl = '\0';
out->slot_name[i] = p;
p = nl + 1;
} else {
out->slot_name[i] = p;
p = p + std::strlen(p);
}
}
ae_np_lan_sync_legacy_names(*out);
return 0;
}
/* MOTK3 UPDATE: header + (player_id, display_name) per slot. */
static int ae_np_lan_parse_motk3_update(char* body, AeLanLobbyState* out) {
if (!body || !out) return -1;
char* lines[8] = {};
char* p = body;
for (int i = 0; i < 4; ++i) {
lines[i] = p;
char* nl = std::strchr(p, '\n');
if (!nl) return -1;
*nl = '\0';
p = nl + 1;
}
int max_slots = std::atoi(lines[0]);
int host_slot = std::atoi(lines[1]);
int started = std::atoi(lines[2]);
unsigned sid = (unsigned)std::strtoul(lines[3], nullptr, 10);
if (max_slots < 2) max_slots = 2;
if (max_slots > kAeLanMaxSlots) max_slots = kAeLanMaxSlots;
if (host_slot < 0 || host_slot >= max_slots) host_slot = 0;
out->max_slots = max_slots;
out->host_slot = host_slot;
out->started = started != 0;
out->session_id = sid ? (uint32_t)sid : 1u;
for (int i = 0; i < kAeLanMaxSlots; ++i) {
out->slot_name[i].clear();
out->slot_id[i].clear();
}
for (int i = 0; i < max_slots; ++i) {
char* nl = std::strchr(p, '\n');
if (!nl) return -1;
*nl = '\0';
out->slot_id[i] = p;
p = nl + 1;
nl = std::strchr(p, '\n');
if (nl) {
*nl = '\0';
out->slot_name[i] = p;
p = nl + 1;
} else {
out->slot_name[i] = p;
p = p + std::strlen(p);
}
}
ae_np_lan_sync_legacy_names(*out);
return 0;
}
/* Send JOIN and wait for UPDATE / ERR. Returns 0, -1 full, -2 password, -3 timeout. */
static int ae_np_lan_wait_join_ack(const std::string& endpoint, const char* password,
AeLanLobbyState* out) {
if (!out) return -1;
char host[64];
if (!ae_np_lan_endpoint_host(endpoint, host, sizeof(host))) return -3;
if (!ae_np_lan_udp_ensure(false, 0)) return -3;
sockaddr_in to{};
to.sin_family = AF_INET;
to.sin_port = htons((uint16_t)ae_np_lan_endpoint_port(endpoint));
if (inet_pton(AF_INET, host, &to.sin_addr) != 1) return -3;
std::string me = psx_lobby_display_name();
if (me.empty()) me = "Player";
const char* my_id = ae_np_lan_local_player_id();
char msg[384];
std::snprintf(msg, sizeof(msg), "MOTK3 JOIN\n%s\n%s\n%s\n", my_id, me.c_str(),
password ? password : "");
ae_np_lan_udp_sendto(to, msg);
const uint32_t deadline = SDL_GetTicks() + 1000u;
while ((int32_t)(deadline - SDL_GetTicks()) > 0) {
char buf[1536];
sockaddr_in from{};
#ifdef _WIN32
int fromlen = (int)sizeof(from);
const int n = recvfrom(g_lnch_lan_udp, buf, (int)sizeof(buf) - 1, 0,
(sockaddr*)&from, &fromlen);
#else
socklen_t fromlen = sizeof(from);
const int n = (int)recvfrom(g_lnch_lan_udp, buf, sizeof(buf) - 1, 0,
(sockaddr*)&from, &fromlen);
#endif
if (n <= 0) {
SDL_Delay(5);
continue;
}
buf[n] = '\0';
if (std::strncmp(buf, "MOTK1 ERR\n", 10) == 0) {
const char* code = buf + 10;
if (std::strncmp(code, "bad_password", 12) == 0) return -2;
return -1;
}
if (std::strncmp(buf, "MOTK3 UPDATE\n", 13) == 0) {
if (ae_np_lan_parse_motk3_update(buf + 13, out) != 0) continue;
out->endpoint = endpoint;
const int my_slot = ae_np_lan_find_slot_by_id(*out, my_id);
if (my_slot < 0) return -1;
g_lnch_lan_my_slot = my_slot;
return 0;
}
if (std::strncmp(buf, "MOTK2 UPDATE\n", 13) == 0) {
if (ae_np_lan_parse_motk2_update(buf + 13, out) != 0) continue;
out->endpoint = endpoint;
/* Legacy host: uniquified name may differ from requested. */
int my_slot = ae_np_lan_find_guest_slot_by_name(*out, me.c_str());
if (my_slot < 0) {
for (int i = 0; i < out->max_slots; ++i) {
if (i == out->host_slot) continue;
if (!out->slot_name[i].empty() &&
out->slot_name[i].rfind(me, 0) == 0) {
my_slot = i;
break;
}
}
}
if (my_slot < 0) return -1;
g_lnch_lan_my_slot = my_slot;
return 0;
}
if (std::strncmp(buf, "MOTK1 UPDATE\n", 13) == 0) {
char* p = buf + 13;
char* lines[4] = {};
for (int i = 0; i < 4; ++i) {
lines[i] = p;
char* nl = std::strchr(p, '\n');
if (!nl) break;
*nl = '\0';
p = nl + 1;
}
if (!lines[0] || !lines[1] || !lines[2] || !lines[3]) continue;
out->host_name = lines[0];
out->joiner_name = lines[1];
out->host_slot = (std::atoi(lines[2]) == 1) ? 1 : 0;
out->started = std::atoi(lines[3]) != 0;
out->max_slots = 2;
out->slot_name[0].clear();
out->slot_name[1].clear();
out->slot_name[out->host_slot] = out->host_name;
out->slot_name[1 - out->host_slot] = out->joiner_name;
out->endpoint = endpoint;
if (out->joiner_name != me) return -1;
g_lnch_lan_my_slot = 1 - out->host_slot;
return 0;
}
SDL_Delay(5);
}
return -3;
}
/* Drop orphan LAN registry files (host crashed / unreachable).
* Never delete merely because started=1: host closes lobby UDP before
* delay-sync bind, so PING fails mid-launch and a delete races the joiner
* reading session_id/started from the file. Started lobbies are already
* hidden by ae_np_lan_list_visible(). */
static void ae_np_lan_rescan(void) {
if (g_lnch_hosting_lan) {
g_lnch_lan_latency_ms = 0;
/* Still browse so the host list can show other LAN rooms. */
ae_np_lan_browse(200u);
AeLanLobbyState self{};
if (ae_np_read_lan_file_state(&self) && !self.started) {
AeLanDiscovered d{};
std::snprintf(d.endpoint, sizeof(d.endpoint), "%s",
self.endpoint.c_str());
std::snprintf(d.name, sizeof(d.name), "%s",
self.name.empty() ? "LAN Lobby" : self.name.c_str());
std::snprintf(d.game, sizeof(d.game), "%s",
self.game.empty() ? "PSX" : self.game.c_str());
d.player_count = ae_np_lan_occupied(self);
d.max_slots = self.max_slots >= 2 ? self.max_slots : 2;
d.has_password = self.password.empty() ? 0 : 1;
d.latency_ms = 0;
d.input_delay = g_lnch_lobby_input_delay;
d.input_prediction = g_lnch_lobby_input_prediction;
d.rollback = g_lnch_rollback ? 1 : 0;
d.session_id = self.session_id ? self.session_id : 1u;
d.last_seen_ms = SDL_GetTicks();
ae_np_lan_discovered_upsert(d);
}
return;
}
if (g_lnch_joined_lan) return;
/* Cross-machine discovery: broadcast BROWSE, collect BEACONs. */
ae_np_lan_browse(300u);
/* Legacy same-machine file registry (shared cwd). */
AeLanLobbyState st;
if (!ae_np_read_lan_file_state(&st)) {
g_lnch_lan_latency_ms = -1;
return;
}
if (st.started) return;
g_lnch_lan_latency_ms = ae_np_lan_probe_rtt_ms(st.endpoint, 200u);
if (g_lnch_lan_latency_ms < 0) {
std::error_code ec;
std::filesystem::remove(ae_np_lan_file(), ec);
} else if (ae_np_lan_discovered_find(st.endpoint.c_str()) < 0) {
/* Promote file row into the discovered table so list_get is uniform. */
AeLanDiscovered d{};
std::snprintf(d.endpoint, sizeof(d.endpoint), "%s", st.endpoint.c_str());
std::snprintf(d.name, sizeof(d.name), "%s",
st.name.empty() ? "LAN Lobby" : st.name.c_str());
std::snprintf(d.game, sizeof(d.game), "%s",
st.game.empty() ? "PSX" : st.game.c_str());
d.player_count = ae_np_lan_occupied(st);
d.max_slots = st.max_slots >= 2 ? st.max_slots : 2;
d.has_password = st.password.empty() ? 0 : 1;
d.latency_ms = g_lnch_lan_latency_ms;
d.input_delay = g_lnch_lobby_input_delay;
d.input_prediction = g_lnch_lobby_input_prediction;
d.rollback = g_lnch_rollback ? 1 : 0;
d.session_id = st.session_id ? st.session_id : 1u;
d.last_seen_ms = SDL_GetTicks();
ae_np_lan_discovered_upsert(d);
}
}
static bool ae_np_lan_list_visible(void) {
if (g_lnch_hosting_lan) {
AeLanLobbyState st;
return ae_np_read_lan_file_state(&st) && !st.started;
}
AeLanLobbyState st;
if (!ae_np_read_lan_file_state(&st) || st.started) return false;
return true;
}
/* Extra LAN rows after the online server list. Prefer discovered table;
* fall back to a single file-backed row when hosting / same-machine. */
static int ae_np_lan_list_extra_count(void) {
ae_np_lan_prune_discovered();
if (g_lnch_lan_discovered_n > 0)
return g_lnch_lan_discovered_n;
return ae_np_lan_list_visible() ? 1 : 0;
}
PsxLobbyMatchCaps ae_netplay_caps_from_settings(const RecompLauncherCSettings* s) {
PsxLobbyMatchCaps caps{};
caps.valid = 1;
switch (s ? s->aspect_index : 0) {
case 2: caps.aspect_num = 21; caps.aspect_den = 9; break;
case 1: caps.aspect_num = 16; caps.aspect_den = 9; break;
default: caps.aspect_num = 4; caps.aspect_den = 3; break;
}
caps.turbo_loads = s ? (s->turbo_loads != 0) : 0;
caps.auto_skip_fmv = s ? (s->auto_skip_fmv != 0) : 0;
caps.input_delay = g_lnch_lobby_input_delay;
if (caps.input_delay < 2) caps.input_delay = 2;
if (caps.input_delay > 20) caps.input_delay = 20;
caps.input_prediction = g_lnch_lobby_input_prediction;
if (caps.input_prediction < 2) caps.input_prediction = 2;
if (caps.input_prediction > 16) caps.input_prediction = 16;
caps.force_input_relay = g_lnch_force_input_relay != 0;
caps.force_turn = g_lnch_force_turn != 0;
caps.rollback = g_lnch_rollback != 0;
return caps;
}
static void ae_np_push_match_caps(const RecompLauncherCSettings* settings) {
if (!psx_lobby_in_lobby() || !psx_lobby_is_host()) return;
const PsxLobbyMatchCaps* cur = psx_lobby_match_caps();
PsxLobbyMatchCaps caps = (cur && cur->valid)
? *cur
: ae_netplay_caps_from_settings(settings);
caps.valid = 1;
caps.input_delay = g_lnch_lobby_input_delay;
if (caps.input_delay < 2) caps.input_delay = 2;
if (caps.input_delay > 20) caps.input_delay = 20;
caps.input_prediction = g_lnch_lobby_input_prediction;
if (caps.input_prediction < 2) caps.input_prediction = 2;
if (caps.input_prediction > 16) caps.input_prediction = 16;
caps.force_input_relay = g_lnch_force_input_relay != 0;
caps.force_turn = g_lnch_force_turn != 0;
caps.rollback = g_lnch_rollback != 0;
(void)psx_lobby_set_match_caps(&caps);
}
int ae_np_input_delay_get(void*) {
/* Online guests show host-authoritative match_caps. */
if (!g_lnch_hosting_lan && !g_lnch_joined_lan) {
const PsxLobbyMatchCaps* caps = psx_lobby_match_caps();
if (caps && caps->valid) {
int d = caps->input_delay;
if (d < 2) d = 2;
if (d > 20) d = 20;
return d;
}
}
return g_lnch_lobby_input_delay;
}
int ae_np_input_delay_set(void*, int delay_frames) {
if (delay_frames < 2) delay_frames = 2;
if (delay_frames > 20) delay_frames = 20;
g_lnch_lobby_input_delay = delay_frames;
ae_np_push_match_caps(nullptr);
return 0;
}
int ae_np_force_input_relay_get(void*) {
if (!g_lnch_hosting_lan && !g_lnch_joined_lan) {
const PsxLobbyMatchCaps* caps = psx_lobby_match_caps();
if (caps && caps->valid)
return caps->force_input_relay ? 1 : 0;
}
return g_lnch_force_input_relay;
}
int ae_np_force_input_relay_set(void*, int force) {
g_lnch_force_input_relay = force ? 1 : 0;
ae_np_push_match_caps(nullptr);
return 0;
}
int ae_np_force_turn_get(void*) {
if (!g_lnch_hosting_lan && !g_lnch_joined_lan) {
const PsxLobbyMatchCaps* caps = psx_lobby_match_caps();
if (caps && caps->valid)
return caps->force_turn ? 1 : 0;
}
return g_lnch_force_turn;
}
int ae_np_force_turn_set(void*, int force) {
if (g_lnch_hosting_lan || g_lnch_joined_lan)
return 0; /* LAN/Direct IP does not use ICE TURN */
g_lnch_force_turn = force ? 1 : 0;
ae_np_push_match_caps(nullptr);
return 0;
}
int ae_np_rollback_get(void*) {
if (!g_lnch_hosting_lan && !g_lnch_joined_lan) {
const PsxLobbyMatchCaps* caps = psx_lobby_match_caps();
if (caps && caps->valid)
return caps->rollback ? 1 : 0;
}
return g_lnch_rollback;
}
int ae_np_rollback_set(void*, int enable) {
g_lnch_rollback = enable ? 1 : 0;
ae_np_push_match_caps(nullptr);
return 0;
}
int ae_np_input_prediction_get(void*) {
if (!g_lnch_hosting_lan && !g_lnch_joined_lan) {
const PsxLobbyMatchCaps* caps = psx_lobby_match_caps();
if (caps && caps->valid) {
int p = caps->input_prediction;
if (p < 2) p = 2;
if (p > 16) p = 16;
return p;
}
}
return g_lnch_lobby_input_prediction;
}
int ae_np_input_prediction_set(void*, int prediction_frames) {
if (prediction_frames < 2) prediction_frames = 2;
if (prediction_frames > 16) prediction_frames = 16;
g_lnch_lobby_input_prediction = prediction_frames;
ae_np_push_match_caps(nullptr);
return 0;
}
/* Seat ceiling for the active room (listing / LOBBY UI). 0 if unknown. */
int ae_np_lobby_max_slots(void*) {
if (g_lnch_hosting_lan || g_lnch_joined_lan) {
AeLanLobbyState state;
if (ae_np_read_lan_state(&state) && state.max_slots >= 2)
return state.max_slots;
return g_lnch_host_max_slots >= 2 ? g_lnch_host_max_slots : 0;
}
if (psx_lobby_in_lobby()) {
const PsxLobbyJoinInfo* ji = psx_lobby_join_info();
if (ji && ji->max_slots >= 2) return ji->max_slots;
return g_lnch_host_max_slots >= 2 ? g_lnch_host_max_slots : 0;
}
return 0;
}
const char* ae_np_default_url(void*) {
return g_lnch_lobby_url.empty() ? psx_lobby_default_url() : g_lnch_lobby_url.c_str();
}
void ae_np_save_identity(const char* player_name, const char* lobby_url) {
if (g_lnch_settings_path.empty()) return;
PSXRecompV4::UserSettings settings =
PSXRecompV4::load_user_settings(g_lnch_settings_path);
if (settings.parse_error) return;
if (player_name && player_name[0]) {
settings.netplay_player_name = player_name;
settings.has_netplay_player_name = true;
}
if (lobby_url && lobby_url[0]) {
settings.netplay_lobby_url = lobby_url;
settings.has_netplay_lobby_url = true;
}
PSXRecompV4::save_user_settings(g_lnch_settings_path, settings);
}
void ae_np_set_lobby_url(void*, const char* url) {
g_lnch_lobby_url = url && url[0] ? url : psx_lobby_default_url();
ae_np_save_identity(nullptr, g_lnch_lobby_url.c_str());
}
int ae_np_connect(void*) {
psx_lobby_set_game_identity(g_lnch_netplay_game_name.c_str(), PSX_GAME_VERSION);
psx_lobby_set_max_slots(g_lnch_game_players);
return psx_lobby_connect(ae_np_default_url(nullptr));
}
int ae_np_connected(void*) {
return psx_lobby_connected();
}
static void ae_np_lan_udp_pump(void) {
if (!g_lnch_hosting_lan && !(g_lnch_joined_lan && g_lnch_remote_lan))
return;
if (g_lnch_hosting_lan) {
AeLanLobbyState st;
if (!ae_np_read_lan_state(&st)) return;
const int lobby_port = ae_np_lan_endpoint_port(st.endpoint);
if (g_lnch_lan_udp == kAeLanSockInvalid)
(void)ae_np_lan_udp_ensure(true, lobby_port);
/* Periodic broadcast BEACON so Refresh can find us without a
* unicast target (and for guests that listen between browses). */
if (g_lnch_lan_udp != kAeLanSockInvalid && !st.started) {
const uint32_t now = SDL_GetTicks();
if (g_lnch_lan_beacon_announce_ms == 0u ||
now - g_lnch_lan_beacon_announce_ms >= 2000u) {
g_lnch_lan_beacon_announce_ms = now;
ae_np_lan_sock_set_broadcast(g_lnch_lan_udp);
char beacon[768];
if (ae_np_lan_format_beacon(beacon, sizeof(beacon), st) > 0)
ae_np_lan_broadcast_msg(g_lnch_lan_udp, lobby_port, beacon);
}
}
} else if (g_lnch_remote_lan) {
if (g_lnch_lan_udp == kAeLanSockInvalid)
(void)ae_np_lan_udp_ensure(false, 0);
const uint32_t now = SDL_GetTicks();
if (g_lnch_lan_udp != kAeLanSockInvalid &&
now - g_lnch_lan_join_pulse_ms >= 400u) {
g_lnch_lan_join_pulse_ms = now;
char host[64];
if (ae_np_lan_endpoint_host(g_lnch_lan_endpoint, host, sizeof(host))) {
sockaddr_in to{};
to.sin_family = AF_INET;
to.sin_port = htons((uint16_t)ae_np_lan_endpoint_port(g_lnch_lan_endpoint));
if (inet_pton(AF_INET, host, &to.sin_addr) == 1) {
std::string me = psx_lobby_display_name();
if (me.empty()) me = "Player";
char msg[384];
std::snprintf(msg, sizeof(msg), "MOTK3 JOIN\n%s\n%s\n%s\n",
ae_np_lan_local_player_id(), me.c_str(),
g_lnch_remote_lan_state.password.c_str());
ae_np_lan_udp_sendto(to, msg);
}
}
}
}
if (g_lnch_lan_udp == kAeLanSockInvalid) return;
for (;;) {
char buf[1536];
sockaddr_in from{};
#ifdef _WIN32
int fromlen = (int)sizeof(from);
const int n = recvfrom(g_lnch_lan_udp, buf, (int)sizeof(buf) - 1, 0,
(sockaddr*)&from, &fromlen);
#else
socklen_t fromlen = sizeof(from);
const int n = (int)recvfrom(g_lnch_lan_udp, buf, sizeof(buf) - 1, 0,
(sockaddr*)&from, &fromlen);
#endif
if (n <= 0) break;
buf[n] = '\0';
if (std::strncmp(buf, "MOTK1 PING", 10) == 0 && g_lnch_hosting_lan) {
ae_np_lan_udp_sendto(from, "MOTK1 PONG\n");
continue;
}
/* LAN lobby discovery: answer browse with a BEACON (unicast). */
if (std::strncmp(buf, "MOTK1 BROWSE", 12) == 0 && g_lnch_hosting_lan) {
AeLanLobbyState st;
if (ae_np_read_lan_state(&st) && !st.started) {
char beacon[768];
if (ae_np_lan_format_beacon(beacon, sizeof(beacon), st) > 0)
ae_np_lan_udp_sendto(from, beacon);
}
continue;
}
if (std::strncmp(buf, "MOTK3 JOIN\n", 11) == 0 && g_lnch_hosting_lan) {
char* p = buf + 11;
char* nl = std::strchr(p, '\n');
if (!nl) continue;
*nl = '\0';
const char* player_id = p;
p = nl + 1;
nl = std::strchr(p, '\n');
if (!nl) continue;
*nl = '\0';
const char* name = p;
p = nl + 1;
nl = std::strchr(p, '\n');
if (nl) *nl = '\0';
const char* pass = p;
AeLanLobbyState st;
if (!ae_np_read_lan_state(&st)) continue;
if (st.password != pass) {
ae_np_lan_udp_sendto(from, "MOTK1 ERR\nbad_password\n");
continue;
}
const int slot = ae_np_lan_seat_guest(st, player_id, name);
if (slot < 0) {
ae_np_lan_udp_sendto(from, "MOTK1 ERR\nfull\n");
continue;
}
st.started = false;
ae_np_lan_sync_legacy_names(st);
if (!ae_np_write_lan_state(st)) continue;
ae_np_lan_set_peer_slot(slot, from);
ae_np_lan_send_update_to_peers(st);
continue;
}
if (std::strncmp(buf, "MOTK1 JOIN\n", 11) == 0 && g_lnch_hosting_lan) {
char* p = buf + 11;
char* nl = std::strchr(p, '\n');
if (!nl) continue;
*nl = '\0';
const char* name = p;
p = nl + 1;
nl = std::strchr(p, '\n');
if (nl) *nl = '\0';
const char* pass = p;
AeLanLobbyState st;
if (!ae_np_read_lan_state(&st)) continue;
if (st.password != pass) {
ae_np_lan_udp_sendto(from, "MOTK1 ERR\nbad_password\n");
continue;
}
/* Legacy JOIN: synthesize an id from peer addr so same-name
* clients still get distinct seats + (2)/(3) labels. */
char synth_id[48];
std::snprintf(synth_id, sizeof(synth_id), "motk1-%08x-%04x",
(unsigned)ntohl(from.sin_addr.s_addr),
(unsigned)ntohs(from.sin_port));
const int slot = ae_np_lan_seat_guest(st, synth_id, name);
if (slot < 0) {
ae_np_lan_udp_sendto(from, "MOTK1 ERR\nfull\n");
continue;
}
st.started = false;
ae_np_lan_sync_legacy_names(st);
if (!ae_np_write_lan_state(st)) continue;
ae_np_lan_set_peer_slot(slot, from);
ae_np_lan_send_update_to_peers(st);
continue;
}
if ((std::strncmp(buf, "MOTK3 LEAVE\n", 12) == 0 ||
std::strncmp(buf, "MOTK1 LEAVE\n", 12) == 0) &&
g_lnch_hosting_lan) {
const bool by_id = std::strncmp(buf, "MOTK3 LEAVE\n", 12) == 0;
char* p = buf + 12;
char* nl = std::strchr(p, '\n');
if (nl) *nl = '\0';
const char* leave_key = (p && p[0]) ? p : nullptr;
AeLanLobbyState st;
if (!ae_np_read_lan_state(&st)) continue;
int cleared = -1;
if (leave_key) {
if (by_id) {
cleared = ae_np_lan_find_slot_by_id(st, leave_key);
if (cleared == st.host_slot) cleared = -1;
} else {
for (int i = 0; i < st.max_slots; ++i) {
if (i == st.host_slot) continue;
if (st.slot_name[i] == leave_key) {
cleared = i;
break;
}
}
}
if (cleared >= 0) {
st.slot_name[cleared].clear();
st.slot_id[cleared].clear();
}
} else {
/* Legacy leave without name: drop first guest. */
for (int i = 0; i < st.max_slots; ++i) {
if (i == st.host_slot) continue;
if (!st.slot_name[i].empty()) {
st.slot_name[i].clear();
st.slot_id[i].clear();
cleared = i;
break;
}
}
}
st.started = false;
ae_np_lan_sync_legacy_names(st);
ae_np_write_lan_state(st);
if (cleared >= 0) ae_np_lan_clear_peer_slot(cleared);
ae_np_lan_send_update_to_peers(st);
continue;
}
if (!g_lnch_remote_lan) continue;
if (std::strncmp(buf, "MOTK3 UPDATE\n", 13) == 0) {
AeLanLobbyState st = g_lnch_remote_lan_state;
if (ae_np_lan_parse_motk3_update(buf + 13, &st) != 0) continue;
st.endpoint = g_lnch_lan_endpoint;
g_lnch_remote_lan_state = st;
const int my_slot =
ae_np_lan_find_slot_by_id(st, ae_np_lan_local_player_id());
if (my_slot < 0) {
g_lnch_joined_lan = false;
g_lnch_remote_lan = false;
g_lnch_lan_endpoint.clear();
g_lnch_lan_my_slot = -1;
ae_np_lan_udp_close();
} else {
g_lnch_lan_my_slot = my_slot;
}
continue;
}
if (std::strncmp(buf, "MOTK2 UPDATE\n", 13) == 0) {
AeLanLobbyState st = g_lnch_remote_lan_state;
if (ae_np_lan_parse_motk2_update(buf + 13, &st) != 0) continue;
st.endpoint = g_lnch_lan_endpoint;
g_lnch_remote_lan_state = st;
if (g_lnch_lan_my_slot >= 0 &&
g_lnch_lan_my_slot < st.max_slots &&
!st.slot_name[g_lnch_lan_my_slot].empty()) {
/* keep assigned slot */
} else {
std::string me = psx_lobby_display_name();
if (me.empty()) me = "Player";
const int my_slot =
ae_np_lan_find_guest_slot_by_name(st, me.c_str());
if (my_slot < 0) {
g_lnch_joined_lan = false;
g_lnch_remote_lan = false;
g_lnch_lan_endpoint.clear();
g_lnch_lan_my_slot = -1;
ae_np_lan_udp_close();
} else {
g_lnch_lan_my_slot = my_slot;
}
}
continue;
}
if (std::strncmp(buf, "MOTK1 UPDATE\n", 13) == 0) {
char* p = buf + 13;
char* lines[4] = {};
for (int i = 0; i < 4; ++i) {
lines[i] = p;
char* nl = std::strchr(p, '\n');
if (!nl) break;
*nl = '\0';
p = nl + 1;
}
if (!lines[0] || !lines[1] || !lines[2] || !lines[3]) continue;
g_lnch_remote_lan_state.host_name = lines[0];
g_lnch_remote_lan_state.joiner_name = lines[1];
g_lnch_remote_lan_state.host_slot = (std::atoi(lines[2]) == 1) ? 1 : 0;
g_lnch_remote_lan_state.started = std::atoi(lines[3]) != 0;
g_lnch_remote_lan_state.max_slots = 2;
g_lnch_remote_lan_state.slot_name[0].clear();
g_lnch_remote_lan_state.slot_name[1].clear();
g_lnch_remote_lan_state.slot_name[g_lnch_remote_lan_state.host_slot] =
g_lnch_remote_lan_state.host_name;
g_lnch_remote_lan_state.slot_name[1 - g_lnch_remote_lan_state.host_slot] =
g_lnch_remote_lan_state.joiner_name;
std::string me = psx_lobby_display_name();
if (me.empty()) me = "Player";
if (g_lnch_remote_lan_state.joiner_name != me) {
g_lnch_joined_lan = false;
g_lnch_remote_lan = false;
g_lnch_lan_endpoint.clear();
g_lnch_lan_my_slot = -1;
ae_np_lan_udp_close();
} else {
g_lnch_lan_my_slot = 1 - g_lnch_remote_lan_state.host_slot;
}
continue;
}
if (std::strncmp(buf, "MOTK1 START\n", 12) == 0) {
g_lnch_remote_lan_state.started = true;
/* MOTK1 START\n<session>\n[<delay>\n<prediction>\n<rollback>\n]
* Trailing caps lines are host-authoritative (LAN had no
* match_caps channel; guests used local UI defaults). */
char* p = buf + 12;
char* nl = std::strchr(p, '\n');
if (nl) *nl = '\0';
if (*p) {
const unsigned v = (unsigned)std::strtoul(p, nullptr, 10);
if (v) {
g_lnch_lan_session_id = (uint32_t)v;
g_lnch_remote_lan_state.session_id = (uint32_t)v;
}
}
if (nl) {
p = nl + 1;
char* lines[3] = {};
for (int i = 0; i < 3; ++i) {
if (!p || !*p) break;
lines[i] = p;
char* n2 = std::strchr(p, '\n');
if (n2) {
*n2 = '\0';
p = n2 + 1;
} else {
p = nullptr;
}
}
if (lines[0] && lines[0][0]) {
int d = std::atoi(lines[0]);
if (d < 2) d = 2;
if (d > 20) d = 20;
g_lnch_lobby_input_delay = d;
}
if (lines[1] && lines[1][0]) {
int pred = std::atoi(lines[1]);
if (pred < 2) pred = 2;
if (pred > 16) pred = 16;
g_lnch_lobby_input_prediction = pred;
}
if (lines[2] && lines[2][0])
g_lnch_rollback = (std::atoi(lines[2]) != 0) ? 1 : 0;
}
continue;
}
if (std::strncmp(buf, "MOTK1 KICK\n", 11) == 0 ||
std::strncmp(buf, "MOTK1 ERR\n", 10) == 0) {
g_lnch_joined_lan = false;
g_lnch_remote_lan = false;
g_lnch_lan_endpoint.clear();
g_lnch_remote_lan_state = {};
ae_np_lan_udp_close();
}
}
}
void ae_np_pump(void*) {
psx_lobby_pump();
ae_np_lan_udp_pump();
/* Lobby UI has no Ready toggle; production WS still requires every
* seated player ready before start. Keep seats ready while in-room
* (including after soft-return rematch clears ready). */
if (!g_lnch_hosting_lan && !g_lnch_joined_lan &&
psx_lobby_in_lobby() && !psx_lobby_local_ready()) {
(void)psx_lobby_set_ready(1);
}
}
void ae_np_set_player_name(void*, const char* name) {
psx_lobby_set_display_name(name && name[0] ? name : "Player");
if (name && name[0]) ae_np_save_identity(name, nullptr);
}
const char* ae_np_player_name(void*) {
return psx_lobby_display_name();
}
void ae_np_request_list(void*) {
ae_np_lan_rescan();
psx_lobby_request_list();
}
int ae_np_list_count(void*) {
return psx_lobby_list_count() + ae_np_lan_list_extra_count();
}
int ae_np_list_get(void*, int index, RecompLauncherCNetplayLobby* out) {
if (!out) return 0;
const int remote_count = psx_lobby_list_count();
if (index >= remote_count) {
const int lan_i = index - remote_count;
ae_np_lan_prune_discovered();
if (g_lnch_lan_discovered_n > 0)
return ae_np_lan_fill_lobby_from_discovered(lan_i, out);
return (lan_i == 0 && ae_np_lan_list_visible())
? ae_np_read_lan_lobby(out) : 0;
}
PsxLobbyRow row{};
if (!psx_lobby_list_get(index, &row)) return 0;
std::snprintf(out->lobby_id, sizeof(out->lobby_id), "%s", row.lobby_id);
std::snprintf(out->name, sizeof(out->name), "%s", row.name);
std::snprintf(out->game_name, sizeof(out->game_name), "%s", row.game_name);
std::snprintf(out->game_version, sizeof(out->game_version), "%s", row.game_version);
out->player_count = row.player_count;
out->max_slots = row.max_slots;
out->has_password = row.has_password;
out->latency_ms = row.latency_ms;
return 1;
}
int ae_np_external_ip(void*, char* out, size_t out_len) {
if (!out || out_len == 0) return 0;
#ifdef _WIN32
WSADATA wsa;
WSAStartup(MAKEWORD(2, 2), &wsa);
#endif
addrinfo hints{};
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
addrinfo* res = nullptr;
if (getaddrinfo("api.ipify.org", "80", &hints, &res) != 0 || !res)
return 0;
#ifdef _WIN32
SOCKET s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
if (s == INVALID_SOCKET) {
freeaddrinfo(res);
return 0;
}
DWORD timeout_ms = 3000;
setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, (const char*)&timeout_ms,
sizeof(timeout_ms));
setsockopt(s, SOL_SOCKET, SO_SNDTIMEO, (const char*)&timeout_ms,
sizeof(timeout_ms));
#else
int s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
if (s < 0) {
freeaddrinfo(res);
return 0;
}
timeval tv{};
tv.tv_sec = 3;
tv.tv_usec = 0;
setsockopt(s, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
setsockopt(s, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv));
#endif
int ok = 0;
#ifdef _WIN32
const int connected =
connect(s, res->ai_addr, (int)res->ai_addrlen) != SOCKET_ERROR;
#else
const int connected =
connect(s, res->ai_addr, (socklen_t)res->ai_addrlen) == 0;
#endif
if (connected) {
const char req[] =
"GET / HTTP/1.1\r\n"
"Host: api.ipify.org\r\n"
"User-Agent: psxrecomp-netplay/1.0\r\n"
"Connection: close\r\n\r\n";
#ifdef _WIN32
(void)send(s, req, (int)strlen(req), 0);
char resp[1024];
int n = recv(s, resp, sizeof(resp) - 1, 0);
#else
(void)send(s, req, strlen(req), 0);
char resp[1024];
ssize_t n = recv(s, resp, sizeof(resp) - 1, 0);
#endif
if (n > 0) {
resp[n] = '\0';
char* body = strstr(resp, "\r\n\r\n");
body = body ? body + 4 : resp;
char ip[64] = {};
int j = 0;
for (int i = 0; body[i] && j < (int)sizeof(ip) - 1; ++i) {
if ((body[i] >= '0' && body[i] <= '9') || body[i] == '.')
ip[j++] = body[i];
else if (j > 0)
break;
}
if (j > 0) {
std::snprintf(out, out_len, "%s", ip);
ok = 1;
}
}
}
#ifdef _WIN32
closesocket(s);
#else
close(s);
#endif
freeaddrinfo(res);
return ok;
}
/* Collect non-loopback IPv4 addresses for local_address_get. */
static void ae_np_collect_local_addresses(
std::vector<RecompLauncherCNetplayLocalAddress>* out) {
if (!out) return;
out->clear();
auto push = [&](const char* ip, const char* label) {
if (!ip || !ip[0]) return;
if (std::strcmp(ip, "0.0.0.0") == 0 ||
std::strcmp(ip, "127.0.0.1") == 0)
return;
for (const auto& existing : *out) {
if (std::strcmp(existing.address, ip) == 0) return;
}
RecompLauncherCNetplayLocalAddress entry{};
std::snprintf(entry.address, sizeof(entry.address), "%s", ip);
if (label && label[0])
std::snprintf(entry.label, sizeof(entry.label), "%s", label);
out->push_back(entry);
};
#ifdef _WIN32
WSADATA wsa;
WSAStartup(MAKEWORD(2, 2), &wsa);
ULONG flags = GAA_FLAG_SKIP_ANYCAST | GAA_FLAG_SKIP_MULTICAST |
GAA_FLAG_SKIP_DNS_SERVER;
ULONG buf_len = 16 * 1024;
std::vector<unsigned char> buf(buf_len);
IP_ADAPTER_ADDRESSES* addrs =
reinterpret_cast<IP_ADAPTER_ADDRESSES*>(buf.data());
ULONG rc = GetAdaptersAddresses(AF_INET, flags, nullptr, addrs, &buf_len);
if (rc == ERROR_BUFFER_OVERFLOW) {
buf.resize(buf_len);
addrs = reinterpret_cast<IP_ADAPTER_ADDRESSES*>(buf.data());
rc = GetAdaptersAddresses(AF_INET, flags, nullptr, addrs, &buf_len);
}
if (rc != NO_ERROR) return;
for (IP_ADAPTER_ADDRESSES* a = addrs; a; a = a->Next) {
if (a->OperStatus != IfOperStatusUp) continue;
if (a->IfType == IF_TYPE_SOFTWARE_LOOPBACK) continue;
char label[64] = {};
if (a->FriendlyName) {
WideCharToMultiByte(CP_UTF8, 0, a->FriendlyName, -1, label,
(int)sizeof(label), nullptr, nullptr);
}
for (IP_ADAPTER_UNICAST_ADDRESS* u = a->FirstUnicastAddress; u;
u = u->Next) {
if (!u->Address.lpSockaddr ||
u->Address.lpSockaddr->sa_family != AF_INET)
continue;
auto* sin = reinterpret_cast<sockaddr_in*>(u->Address.lpSockaddr);
char ip[64] = {};
if (!inet_ntop(AF_INET, &sin->sin_addr, ip, sizeof(ip))) continue;
push(ip, label);
}
}
#else
struct ifaddrs* ifa = nullptr;
if (getifaddrs(&ifa) != 0 || !ifa) return;
for (struct ifaddrs* i = ifa; i; i = i->ifa_next) {
if (!i->ifa_addr || i->ifa_addr->sa_family != AF_INET) continue;
if (!(i->ifa_flags & IFF_UP) || (i->ifa_flags & IFF_LOOPBACK)) continue;
auto* sin = reinterpret_cast<sockaddr_in*>(i->ifa_addr);
char ip[64] = {};
if (!inet_ntop(AF_INET, &sin->sin_addr, ip, sizeof(ip))) continue;
push(ip, i->ifa_name ? i->ifa_name : "");
}
freeifaddrs(ifa);
#endif
}
int ae_np_local_address_get(void*, int index,
RecompLauncherCNetplayLocalAddress* out) {
if (!out || index < 0) return 0;
std::memset(out, 0, sizeof(*out));
std::vector<RecompLauncherCNetplayLocalAddress> addrs;
ae_np_collect_local_addresses(&addrs);
if (index >= (int)addrs.size()) return 0;
*out = addrs[(size_t)index];
return out->address[0] ? 1 : 0;
}
int ae_np_local_ip(void*, char* out, size_t out_len) {
if (!out || out_len == 0) return 0;
std::vector<RecompLauncherCNetplayLocalAddress> addrs;
ae_np_collect_local_addresses(&addrs);
if (addrs.empty()) {
std::snprintf(out, out_len, "Unavailable");
return 0;
}
std::snprintf(out, out_len, "%s", addrs[0].address);
return 1;
}
/* LAN/Direct IP rooms own membership via the local file registry. Server
* lobbies use WebSocket lobby_update. Never mix: LAN mode wins if set. */
static bool ae_np_use_lan_members(void) {
return g_lnch_hosting_lan || g_lnch_joined_lan;
}
static bool ae_np_use_ws_members(void) {
return !ae_np_use_lan_members() && psx_lobby_in_lobby() != 0;
}
/* Joiner was cleared / file gone → treat as kicked or host left. */
static void ae_np_poll_lan_joiner_still_seated(void) {
if (!g_lnch_joined_lan) return;
if (g_lnch_remote_lan) {
/* Remote seat cleared by UDP KICK/ERR/UPDATE in pump. */
return;
}
AeLanLobbyState state;
if (!ae_np_read_lan_state(&state)) {
g_lnch_joined_lan = false;
g_lnch_lan_endpoint.clear();
g_lnch_lan_my_slot = -1;
return;
}
bool seated = false;
const int by_id =
ae_np_lan_find_slot_by_id(state, ae_np_lan_local_player_id());
if (by_id >= 0 && by_id != state.host_slot) {
seated = true;
g_lnch_lan_my_slot = by_id;
} else if (g_lnch_lan_my_slot >= 0 &&
g_lnch_lan_my_slot < state.max_slots &&
g_lnch_lan_my_slot != state.host_slot &&
!state.slot_name[g_lnch_lan_my_slot].empty()) {
seated = true;
} else {
std::string me = psx_lobby_display_name();
if (me.empty()) me = "Player";
const int slot = ae_np_lan_find_guest_slot_by_name(state, me.c_str());
if (slot >= 0) {
seated = true;
g_lnch_lan_my_slot = slot;
}
}
if (!seated) {
g_lnch_joined_lan = false;
g_lnch_lan_endpoint.clear();
g_lnch_lan_my_slot = -1;
}
}
/* host_endpoint is in/out (capacity >= 64). Online may rewrite the UDP
* port when the requested one is busy. Returns 0 ok, -4 port unavailable. */
int ae_np_create(void*, const char* lobby_name, char* host_endpoint,
const char* password,
const RecompLauncherCSettings* settings,
int lan_only, int max_slots) {
int game_max = g_lnch_game_players >= 2 ? g_lnch_game_players : 2;
if (game_max > PSX_MAX_PLAYERS) game_max = PSX_MAX_PLAYERS;
if (game_max > 8) game_max = 8;
if (max_slots < 2) max_slots = 2;
if (max_slots > game_max) max_slots = game_max;
/* Lobby + delay-sync ceiling (party games up to 8). */
if (max_slots > RECOMP_LAUNCHER_NETPLAY_MAX_MEMBERS)
max_slots = RECOMP_LAUNCHER_NETPLAY_MAX_MEMBERS;
g_lnch_host_max_slots = max_slots;
PsxLobbyMatchCaps caps = ae_netplay_caps_from_settings(settings);
char endpoint[96];
if (host_endpoint && host_endpoint[0])
std::snprintf(endpoint, sizeof(endpoint), "%s", host_endpoint);
else
std::snprintf(endpoint, sizeof(endpoint), "0.0.0.0:7777");
const int want_port = ae_np_lan_endpoint_port(endpoint);
/* LAN/Direct IP only: local registry + UDP membership (no lobby WS).
* Online create always uses psx_lobby_create — even when the UI passes
* a concrete LAN IPv4 for MotK-style host_bind rewrite. */
if (lan_only) {
/* LAN/Direct IP: exact port required — fail if busy. */
if (psx_lobby_in_lobby())
(void)psx_lobby_leave();
if (!ae_np_write_lan_lobby(lobby_name, endpoint, password, max_slots))
return -4;
if (host_endpoint)
std::snprintf(host_endpoint, 96, "%s", endpoint);
return 0;
}
/* Online: auto-pick a free UDP port starting at the requested one. */
const int free_port = ae_np_find_free_udp_port(want_port);
if (free_port < 0) return -4;
if (free_port != want_port &&
!ae_np_endpoint_replace_port(endpoint, sizeof(endpoint), free_port)) {
return -4;
}
if (host_endpoint)
std::snprintf(host_endpoint, 96, "%s", endpoint);
if (g_lnch_hosting_lan) {
std::error_code ec;
std::filesystem::remove(ae_np_lan_file(), ec);
}
ae_np_lan_udp_close();
g_lnch_hosting_lan = false;
g_lnch_joined_lan = false;
g_lnch_remote_lan = false;
g_lnch_remote_lan_state = {};
g_lnch_lan_endpoint.clear();
psx_lobby_set_max_slots(max_slots);
return psx_lobby_create(lobby_name && lobby_name[0] ? lobby_name : "Netplay Lobby",
g_lnch_netplay_game_name.c_str(), PSX_GAME_VERSION,
password ? password : "", endpoint, &caps);
}
/* guest_bind is in/out (capacity >= 64). recomp-ui fills a real UDP port
* (prefer 7778); never advertise :0 to the lobby. */
int ae_np_join(void*, const char* lobby_id, const char* password,
char* guest_bind) {
char bind_buf[64];
const char* bind = guest_bind;
const char* colon = (bind && bind[0]) ? std::strrchr(bind, ':') : nullptr;
const unsigned port = (colon && colon[1])
? static_cast<unsigned>(std::strtoul(colon + 1, nullptr, 10)) : 0u;
if (!bind || !bind[0] || port == 0u) {
std::snprintf(bind_buf, sizeof(bind_buf), "0.0.0.0:7778");
bind = bind_buf;
if (guest_bind)
std::snprintf(guest_bind, 64, "%s", bind_buf);
}
if (lobby_id && strncmp(lobby_id, "lan:", 4) == 0) {
const char* endpoint = lobby_id + 4;
if (!endpoint[0]) return -1;
if (psx_lobby_in_lobby())
(void)psx_lobby_leave();
/* Adopt host D/P/rollback from the last BEACON (if any) before
* seating — START still re-asserts host-authoritative caps. */
ae_np_lan_apply_discovered_caps(endpoint);
/* Must be a live LAN/Direct IP host (UDP PONG). Online-only hosts
* never answer — refuse so we don't open a fake local room. */
if (!ae_np_lan_probe_host_ms(endpoint, 750u))
return -3;
/* Peek the on-disk registry (ignore any prior remote seat). */
const bool prior_remote = g_lnch_remote_lan;
g_lnch_remote_lan = false;
AeLanLobbyState file{};
const bool have_file = ae_np_read_lan_file_state(&file);
g_lnch_remote_lan = prior_remote;
/* Same-machine / shared cwd: claim the local LAN file when the
* endpoint matches. */
if (have_file && !g_lnch_hosting_lan && file.endpoint == endpoint) {
if (file.password != (password ? password : "")) return -2;
std::string me = psx_lobby_display_name();
if (me.empty()) me = "Player";
const int slot =
ae_np_lan_seat_guest(file, ae_np_lan_local_player_id(), me.c_str());
if (slot < 0) return -1;
file.started = false;
ae_np_lan_sync_legacy_names(file);
g_lnch_remote_lan = false;
g_lnch_remote_lan_state = {};
if (!ae_np_write_lan_state(file)) return -1;
g_lnch_hosting_lan = false;
g_lnch_joined_lan = true;
g_lnch_lan_my_slot = slot;
g_lnch_lan_endpoint = file.endpoint;
return 0;
}
/* Cross-machine Join Direct: JOIN must be acked before we seat. */
ae_np_lan_udp_close();
AeLanLobbyState seated{};
seated.name = "Direct";
seated.game =
g_lnch_netplay_game_name.empty() ? "PSX" : g_lnch_netplay_game_name;
seated.endpoint = endpoint;
seated.password = password ? password : "";
const int ack = ae_np_lan_wait_join_ack(endpoint, password, &seated);
if (ack != 0) {
ae_np_lan_udp_close();
g_lnch_joined_lan = false;
g_lnch_remote_lan = false;
g_lnch_remote_lan_state = {};
g_lnch_lan_endpoint.clear();
return ack;
}
g_lnch_remote_lan = true;
g_lnch_remote_lan_state = seated;
ae_np_lan_sync_legacy_names(g_lnch_remote_lan_state);
g_lnch_hosting_lan = false;
g_lnch_joined_lan = true;
g_lnch_lan_endpoint = endpoint;
g_lnch_lan_join_pulse_ms = SDL_GetTicks();
return 0;
}
/* Server join: leave any stale LAN-file room mode so membership follows WS. */
ae_np_lan_udp_close();
g_lnch_hosting_lan = false;
g_lnch_joined_lan = false;
g_lnch_remote_lan = false;
g_lnch_remote_lan_state = {};
g_lnch_lan_endpoint.clear();
return psx_lobby_join(lobby_id, password ? password : "", bind);
}
const char* ae_np_last_error(void*) {
const PsxLobbyJoinInfo* ji = psx_lobby_join_info();
return (ji && ji->last_error[0]) ? ji->last_error : nullptr;
}
void ae_np_clear_last_error(void*) {
PsxLobbyJoinInfo* ji = const_cast<PsxLobbyJoinInfo*>(psx_lobby_join_info());
if (ji) ji->last_error[0] = '\0';
}
int ae_np_leave(void*) {
if (g_lnch_hosting_lan) {
for (int i = 0; i < kAeLanMaxSlots; ++i) {
if (g_lnch_lan_peer_ok[i])
ae_np_lan_udp_sendto(g_lnch_lan_peers[i], "MOTK1 KICK\n");
}
std::error_code ec;
std::filesystem::remove(ae_np_lan_file(), ec);
g_lnch_hosting_lan = false;
} else if (g_lnch_joined_lan) {
std::string me = psx_lobby_display_name();
if (me.empty()) me = "Player";
if (g_lnch_remote_lan) {
char host[64];
if (ae_np_lan_endpoint_host(g_lnch_lan_endpoint, host, sizeof(host)) &&
g_lnch_lan_udp != kAeLanSockInvalid) {
sockaddr_in to{};
to.sin_family = AF_INET;
to.sin_port =
htons((uint16_t)ae_np_lan_endpoint_port(g_lnch_lan_endpoint));
if (inet_pton(AF_INET, host, &to.sin_addr) == 1) {
char leave_msg[160];
std::snprintf(leave_msg, sizeof(leave_msg),
"MOTK3 LEAVE\n%s\n",
ae_np_lan_local_player_id());
ae_np_lan_udp_sendto(to, leave_msg);
}
}
} else {
AeLanLobbyState state;
if (ae_np_read_lan_state(&state)) {
int slot = ae_np_lan_find_slot_by_id(state, ae_np_lan_local_player_id());
if (slot < 0 && g_lnch_lan_my_slot >= 0 &&
g_lnch_lan_my_slot < state.max_slots &&
g_lnch_lan_my_slot != state.host_slot) {
slot = g_lnch_lan_my_slot;
}
if (slot < 0)
slot = ae_np_lan_find_guest_slot_by_name(state, me.c_str());
if (slot >= 0) {
state.slot_name[slot].clear();
state.slot_id[slot].clear();
}
state.started = false;
ae_np_lan_sync_legacy_names(state);
ae_np_write_lan_state(state);
}
}
}
ae_np_lan_udp_close();
g_lnch_joined_lan = false;
g_lnch_remote_lan = false;
g_lnch_remote_lan_state = {};
g_lnch_lan_endpoint.clear();
g_lnch_lan_my_slot = -1;
g_lnch_pending_direct_launch = {};
return psx_lobby_leave();
}
int ae_np_in_lobby(void*) {
ae_np_poll_lan_joiner_still_seated();
if (g_lnch_hosting_lan) {
AeLanLobbyState state;
return ae_np_read_lan_state(&state) ? 1 : 0;
}
if (g_lnch_joined_lan) return 1;
return psx_lobby_in_lobby();
}
int ae_np_is_host(void*) {
if (ae_np_use_lan_members()) return g_lnch_hosting_lan ? 1 : 0;
if (ae_np_use_ws_members()) return psx_lobby_is_host();
return psx_lobby_is_host();
}
int ae_np_member_count(void*) {
if (ae_np_use_ws_members()) {
const int n = psx_lobby_member_count();
return n > 0 ? n : 1;
}
if (ae_np_use_lan_members()) {
AeLanLobbyState state;
if (!ae_np_read_lan_state(&state)) return 1;
const int n = ae_np_lan_occupied(state);
return n > 0 ? n : 1;
}
return psx_lobby_member_count();
}
int ae_np_member_get(void*, int index, RecompLauncherCNetplayMember* out) {
if (!out) return 0;
if (ae_np_use_ws_members()) {
PsxLobbyMember mem{};
if (!psx_lobby_member_get(index, &mem)) return 0;
out->slot = mem.slot;
std::snprintf(out->display_name, sizeof(out->display_name), "%s",
mem.display_name);
out->ready = mem.ready;
const char* host_id = psx_lobby_host_player_id();
/* Prefer host_player_id; slot-0 fallback only when unknown (never
* mark a guest as host after a seat swap). */
if (host_id && host_id[0] && mem.player_id[0])
out->is_host = (std::strcmp(host_id, mem.player_id) == 0) ? 1 : 0;
else
out->is_host = (mem.slot == 0) ? 1 : 0;
{
const char* self_id = psx_lobby_player_id();
out->is_local = (self_id && self_id[0] && mem.player_id[0] &&
std::strcmp(self_id, mem.player_id) == 0)
? 1
: 0;
}
out->latency_ms = psx_lobby_member_latency_ms(mem.slot);
return 1;
}
if (ae_np_use_lan_members()) {
AeLanLobbyState state;
if (!ae_np_read_lan_state(&state)) return 0;
int seen = 0;
for (int slot = 0; slot < state.max_slots; ++slot) {
if (state.slot_name[slot].empty()) continue;
if (seen == index) {
out->slot = slot;
std::snprintf(out->display_name, sizeof(out->display_name), "%s",
state.slot_name[slot].c_str());
out->ready = 1;
out->is_host = (slot == state.host_slot) ? 1 : 0;
out->is_local = (slot == g_lnch_lan_my_slot) ? 1 : 0;
out->latency_ms = -1;
return 1;
}
++seen;
}
return 0;
}
PsxLobbyMember mem{};
if (!psx_lobby_member_get(index, &mem)) return 0;
out->slot = mem.slot;
std::snprintf(out->display_name, sizeof(out->display_name), "%s", mem.display_name);
out->ready = mem.ready;
const char* host_id = psx_lobby_host_player_id();
if (host_id && host_id[0] && mem.player_id[0])
out->is_host = (std::strcmp(host_id, mem.player_id) == 0) ? 1 : 0;
else
out->is_host = (mem.slot == 0) ? 1 : 0;
{
const char* self_id = psx_lobby_player_id();
out->is_local = (self_id && self_id[0] && mem.player_id[0] &&
std::strcmp(self_id, mem.player_id) == 0)
? 1
: 0;
}
out->latency_ms = psx_lobby_member_latency_ms(mem.slot);
return 1;
}
int ae_np_move_member(void*, int from_slot, int to_slot) {
if (from_slot < 0 || to_slot < 0 || from_slot == to_slot) return -1;
if (g_lnch_hosting_lan) {
AeLanLobbyState state;
if (!ae_np_read_lan_state(&state)) return -1;
if (from_slot < 0 || to_slot < 0 ||
from_slot >= state.max_slots || to_slot >= state.max_slots)
return -1;
std::swap(state.slot_name[from_slot], state.slot_name[to_slot]);
std::swap(state.slot_id[from_slot], state.slot_id[to_slot]);
if (state.host_slot == from_slot) state.host_slot = to_slot;
else if (state.host_slot == to_slot) state.host_slot = from_slot;
/* Swap peer bindings with seats. */
if (from_slot < kAeLanMaxSlots && to_slot < kAeLanMaxSlots) {
std::swap(g_lnch_lan_peers[from_slot], g_lnch_lan_peers[to_slot]);
std::swap(g_lnch_lan_peer_ok[from_slot], g_lnch_lan_peer_ok[to_slot]);
}
state.started = false;
ae_np_lan_sync_legacy_names(state);
if (!ae_np_write_lan_state(state)) return -1;
ae_np_lan_send_update_to_peers(state);
return 0;
}
if (ae_np_use_ws_members() && psx_lobby_is_host())
return psx_lobby_move_member(from_slot, to_slot);
return -1;
}
int ae_np_kick_member(void*, int slot) {
if (g_lnch_hosting_lan) {
AeLanLobbyState state;
if (!ae_np_read_lan_state(&state)) return -1;
if (slot < 0 || slot >= state.max_slots || slot == state.host_slot)
return -1;
if (state.slot_name[slot].empty()) return -1;
state.slot_name[slot].clear();
state.slot_id[slot].clear();
state.started = false;
ae_np_lan_sync_legacy_names(state);
if (!ae_np_write_lan_state(state)) return -1;
if (slot < kAeLanMaxSlots && g_lnch_lan_peer_ok[slot]) {
ae_np_lan_udp_sendto(g_lnch_lan_peers[slot], "MOTK1 KICK\n");
ae_np_lan_clear_peer_slot(slot);
}
ae_np_lan_send_update_to_peers(state);
return 0;
}
if (ae_np_use_ws_members() && psx_lobby_is_host())
return psx_lobby_kick(slot);
return -1;
}
int ae_np_local_ready(void*) { return psx_lobby_local_ready(); }
int ae_np_all_ready(void*) { return psx_lobby_all_ready(); }
int ae_np_set_ready(void*, int ready) { return psx_lobby_set_ready(ready); }
int ae_np_request_start(void*, const RecompLauncherCSettings* settings) {
if (g_lnch_hosting_lan) {
AeLanLobbyState state;
if (!ae_np_read_lan_state(&state) || ae_np_lan_occupied(state) < 2)
return -1;
state.started = true;
state.session_id += 1u;
if (state.session_id == 0) state.session_id = 1;
g_lnch_lan_session_id = state.session_id;
if (!ae_np_write_lan_state(state)) return -1;
ae_np_lan_send_update_to_peers(state);
char start_msg[96];
int delay = g_lnch_lobby_input_delay;
int pred = g_lnch_lobby_input_prediction;
if (delay < 2) delay = 2;
if (delay > 20) delay = 20;
if (pred < 2) pred = 2;
if (pred > 16) pred = 16;
std::snprintf(start_msg, sizeof(start_msg),
"MOTK1 START\n%u\n%d\n%d\n%d\n",
(unsigned)state.session_id, delay, pred,
g_lnch_rollback ? 1 : 0);
for (int i = 0; i < kAeLanMaxSlots; ++i) {
if (g_lnch_lan_peer_ok[i])
ae_np_lan_udp_sendto(g_lnch_lan_peers[i], start_msg);
}
return 0;
}
if (!psx_lobby_is_host()) return -1;
/* Ensure host seat is ready even if pump hasn't run since rematch. */
(void)psx_lobby_set_ready(1);
PsxLobbyMatchCaps caps = ae_netplay_caps_from_settings(settings);
return psx_lobby_request_start(&caps);
}
int ae_np_launch_pending(void*) {
if ((g_lnch_hosting_lan || g_lnch_joined_lan) &&
!g_lnch_pending_direct_launch.enabled) {
AeLanLobbyState state;
if (ae_np_read_lan_state(&state) && state.started) {
/* Free the lobby UDP port before delay-sync binds it. */
ae_np_lan_udp_close();
g_lnch_lan_session_id = state.session_id ? state.session_id : 1u;
g_lnch_pending_direct_launch = {};
g_lnch_pending_direct_launch.enabled = 1;
{
int local_slot = g_lnch_hosting_lan ? state.host_slot : g_lnch_lan_my_slot;
if (local_slot < 0)
local_slot = g_lnch_hosting_lan ? state.host_slot : 1;
g_lnch_pending_direct_launch.local_slot = local_slot;
}
/* -1 => resolve at netplay start (prefer NETPLAY/P1 card). */
g_lnch_pending_direct_launch.input_player = -1;
g_lnch_pending_direct_launch.session_id = g_lnch_lan_session_id;
g_lnch_pending_direct_launch.input_delay = g_lnch_lobby_input_delay;
g_lnch_pending_direct_launch.input_prediction =
g_lnch_lobby_input_prediction;
g_lnch_pending_direct_launch.max_slots =
state.max_slots >= 2 ? state.max_slots
: (g_lnch_host_max_slots >= 2 ? g_lnch_host_max_slots
: (g_lnch_game_players >= 2 ? g_lnch_game_players : 2));
if (g_lnch_pending_direct_launch.max_slots > PSX_MAX_PLAYERS)
g_lnch_pending_direct_launch.max_slots = PSX_MAX_PLAYERS;
if (g_lnch_pending_direct_launch.max_slots > kAeLanMaxSlots)
g_lnch_pending_direct_launch.max_slots = kAeLanMaxSlots;
g_lnch_pending_direct_launch.force_input_relay = 0;
g_lnch_pending_direct_launch.force_turn = 0;
g_lnch_pending_direct_launch.rollback = g_lnch_rollback ? 1 : 0;
g_lnch_pending_direct_launch.player_count = ae_np_lan_occupied(state);
if (g_lnch_hosting_lan) {
const size_t colon = state.endpoint.rfind(':');
const char* port = colon == std::string::npos
? "7777" : state.endpoint.c_str() + colon + 1;
std::snprintf(g_lnch_pending_direct_launch.bind_hostport,
sizeof(g_lnch_pending_direct_launch.bind_hostport),
"0.0.0.0:%s", port);
/* 3+ host-as-relay: empty peer → lan_hub. 2P: accept-first. */
g_lnch_pending_direct_launch.peer_hostport[0] = '\0';
} else {
std::snprintf(g_lnch_pending_direct_launch.bind_hostport,
sizeof(g_lnch_pending_direct_launch.bind_hostport), "0.0.0.0:0");
std::snprintf(g_lnch_pending_direct_launch.peer_hostport,
sizeof(g_lnch_pending_direct_launch.peer_hostport), "%s",
state.endpoint.c_str());
}
}
}
return g_lnch_pending_direct_launch.enabled || psx_lobby_launch_pending();
}
void ae_np_clear_launch_pending(void*) {
g_lnch_pending_direct_launch = {};
psx_lobby_clear_launch_pending();
}
/* After a match soft-exit: keep seats, clear started/ready, rebind LAN UDP. */
void ae_np_prepare_lobby_rematch(void) {
g_lnch_pending_direct_launch = {};
psx_lobby_set_ready(0);
psx_lobby_clear_launch_pending();
psx_lobby_clear_signals();
psx_lobby_set_ice_signal_accept(0);
psx_lobby_resume_waiting_room_rtt();
if (!(g_lnch_hosting_lan || g_lnch_joined_lan)) return;
AeLanLobbyState st;
if (ae_np_read_lan_state(&st)) {
st.started = false;
(void)ae_np_write_lan_state(st);
}
if (g_lnch_hosting_lan && !g_lnch_lan_endpoint.empty()) {
ae_np_lan_udp_close();
(void)ae_np_lan_udp_ensure(true, ae_np_lan_endpoint_port(g_lnch_lan_endpoint));
if (ae_np_read_lan_state(&st))
ae_np_lan_send_update_to_peers(st);
} else if (g_lnch_remote_lan) {
ae_np_lan_udp_close();
(void)ae_np_lan_udp_ensure(false, 0);
g_lnch_lan_join_pulse_ms = 0;
}
}
const char* ae_np_lan_endpoint_cstr(void) {
return g_lnch_lan_endpoint.empty() ? nullptr : g_lnch_lan_endpoint.c_str();
}
int ae_np_fill_launch(void*, RecompLauncherCNetplayLaunch* out) {
if (!out) return 0;
if (g_lnch_pending_direct_launch.enabled) {
*out = g_lnch_pending_direct_launch;
return 1;
}
const PsxLobbyJoinInfo* ji = psx_lobby_join_info();
if (!ji || !ji->ok) return 0;
const PsxLobbyMatchCaps* caps = psx_lobby_match_caps();
/* Host match_caps are required online — do not silently default D/relay. */
if (!caps || !caps->valid) return 0;
out->enabled = 1;
out->local_slot = ji->local_slot;
/* -1 => resolve at netplay start (prefer NETPLAY/P1 card). */
out->input_player = -1;
std::snprintf(out->bind_hostport, sizeof(out->bind_hostport), "%s", ji->bind_hostport);
std::snprintf(out->peer_hostport, sizeof(out->peer_hostport), "%s", ji->peer_hostport);
out->session_id = ji->session_id;
out->input_delay = caps->input_delay;
out->input_prediction = caps->input_prediction;
if (out->input_prediction < 2) out->input_prediction = 2;
if (out->input_prediction > 16) out->input_prediction = 16;
out->max_slots = ji->max_slots >= 2 ? ji->max_slots
: (g_lnch_game_players >= 2 ? g_lnch_game_players : 2);
if (out->max_slots > PSX_MAX_PLAYERS) out->max_slots = PSX_MAX_PLAYERS;
/* Seated width for delay-sync (not lobby ceiling). Bump for sparse
* seat indices so a moved player at slot N still fits. */
{
int seated = ji->player_count > 0 ? ji->player_count : 0;
int high = ji->local_slot;
const int mc = psx_lobby_member_count();
for (int i = 0; i < mc; ++i) {
PsxLobbyMember mem{};
if (!psx_lobby_member_get(i, &mem)) continue;
if (mem.slot > high) high = mem.slot;
}
if (high + 1 > seated) seated = high + 1;
if (seated < 2) seated = out->max_slots;
if (seated > out->max_slots) seated = out->max_slots;
out->player_count = seated;
}
out->force_input_relay =
(caps && caps->valid && caps->force_input_relay) ? 1 : 0;
out->force_turn =
(caps && caps->valid && caps->force_turn) ? 1 : 0;
out->rollback =
(caps && caps->valid && caps->rollback) ? 1 : 0;
return 1;
}
RecompLauncherCNetplayCallbacks g_lnch_netplay_callbacks = {
nullptr,
ae_np_default_url,
ae_np_set_lobby_url,
ae_np_connect,
ae_np_connected,
ae_np_pump,
ae_np_set_player_name,
ae_np_player_name,
ae_np_request_list,
ae_np_list_count,
ae_np_list_get,
ae_np_local_ip,
ae_np_external_ip,
ae_np_create,
ae_np_join,
ae_np_leave,
ae_np_in_lobby,
ae_np_is_host,
ae_np_member_count,
ae_np_member_get,
ae_np_move_member,
ae_np_local_ready,
ae_np_all_ready,
ae_np_set_ready,
ae_np_request_start,
ae_np_launch_pending,
ae_np_clear_launch_pending,
ae_np_fill_launch,
ae_np_local_address_get,
ae_np_kick_member,
ae_np_last_error,
ae_np_clear_last_error,
ae_np_input_delay_get,
ae_np_input_delay_set,
ae_np_force_input_relay_get,
ae_np_force_input_relay_set,
ae_np_lobby_max_slots,
ae_np_force_turn_get,
ae_np_force_turn_set,
ae_np_rollback_get,
ae_np_rollback_set,
ae_np_input_prediction_get,
ae_np_input_prediction_set,
};
} // namespace
#endif
int main(int argc, char** argv) {
/* Force line-buffered output so messages appear even if killed. */
std::setvbuf(stdout, nullptr, _IOLBF, 0);
std::setvbuf(stderr, nullptr, _IOLBF, 0);
std::fprintf(stderr, "psxrecomp: main() entered\n");
std::fflush(stderr);
#if defined(RECOMP_LAUNCHER)
launcher_boot_timing_mark("host:main_enter");
#endif
/* Install crash handlers early so they catch issues during init too.
* Writes psx_last_run_report.json on signal/SEH/atexit/fail-fast. */
psx_crash_trace_install_handlers();
#if defined(RECOMP_LAUNCHER)
launcher_boot_timing_mark("host:crash_handlers");
#endif
const char* bios_path = PSX_DEFAULT_BIOS_PATH;
const char* game_config_path = nullptr;
const char* disc_override_path = nullptr;
bool bios_from_cli = false; /* CLI --bios/positional wins over settings.toml */
/* Did the PLAYER choose this BIOS (CLI or settings), as opposed to it
* being the compile-time default? Only a real choice overrides the
* bundled OpenBIOS — see docs/BIOS_SELECTION.md. */
bool bios_explicit = false;
/* Launcher overrides (mirrors snesrecomp): --launcher forces the GUI back on
* even when [launcher] skip_launcher = true is set; --no-launcher (and the
* PSX_NO_LAUNCHER env) forces it off. --launcher wins if both are given. */
bool force_launcher = false;
bool force_no_launcher = false;
/* CLI overrides for running several instances side by side (soak fleet).
* These win over any game-config value and, crucially, work for the BIOS
* (which has no [game]-block config schema, so debug_port/renderer can't be
* supplied via --game). -1 = "not set on the CLI". */
int cli_debug_port = -1;
int cli_renderer = -1; /* 0=software 1=opengl 2=vulkan */
const char* cli_window_title = nullptr; /* label windows in a fleet */
const char* cli_memcard_dir = nullptr; /* isolate writable state in a fleet */
PsxNetplayConfig net_cfg;
psx_netplay_config_defaults(&net_cfg);
psx_netplay_apply_env(&net_cfg); /* CLI flags below win over env */
/* Parse args.
* --bios <path> override the compile-time BIOS path
* --game <toml> load a game config (single source of truth for
* disc / memcard / window title / debug port)
* --disc <path> override the game config disc path
* --debug-port <n> override the TCP debug-server port (multi-instance)
* --memcard-dir <path> override card/save/options state (multi-instance)
* --renderer <name> override the renderer: software|opengl|vulkan
* --launcher force the GUI launcher (overrides skip_launcher)
* --no-launcher skip the GUI launcher (boot straight in)
* --headless skip SDL window/audio; use TCP screenshots/state
* --netplay enable delay-sync LAN (also PSX_NETPLAY=1)
* --net-slot N local player slot (0|1)
* --net-input-player N host device to sample (0=P1, 1=P2; default auto)
* --net-bind H:P local UDP bind (default 0.0.0.0:7777)
* --net-peer H:P peer host:port
* --net-delay N input delay in sim ticks (default 2)
* --net-session-id N must match peer (default 1)
* <positional> deprecated alias for --bios
* No --game-root flag: that remains config-driven. */
for (int i = 1; i < argc; i++) {
if (std::strcmp(argv[i], "--bios") == 0 && i + 1 < argc) {
bios_path = argv[++i];
bios_from_cli = true;
bios_explicit = true;
} else if (std::strcmp(argv[i], "--game") == 0 && i + 1 < argc) {
game_config_path = argv[++i];
} else if (std::strcmp(argv[i], "--disc") == 0 && i + 1 < argc) {
disc_override_path = argv[++i];
} else if (std::strcmp(argv[i], "--debug-port") == 0 && i + 1 < argc) {
cli_debug_port = std::atoi(argv[++i]);
} else if (std::strcmp(argv[i], "--memcard-dir") == 0 && i + 1 < argc) {
cli_memcard_dir = argv[++i];
} else if (std::strcmp(argv[i], "--renderer") == 0 && i + 1 < argc) {
const char* r = argv[++i];
if (std::strcmp(r, "software") == 0) cli_renderer = 0;
else if (std::strcmp(r, "opengl") == 0) cli_renderer = 1;
else if (std::strcmp(r, "vulkan") == 0) cli_renderer = 2;
} else if (std::strcmp(argv[i], "--window-title") == 0 && i + 1 < argc) {
cli_window_title = argv[++i];
} else if (std::strcmp(argv[i], "--launcher") == 0) {
force_launcher = true;
} else if (std::strcmp(argv[i], "--no-launcher") == 0) {
force_no_launcher = true;
} else if (std::strcmp(argv[i], "--headless") == 0) {
g_headless = 1;
force_no_launcher = true;
} else if (std::strcmp(argv[i], "--netplay") == 0) {
net_cfg.enabled = 1;
} else if (std::strcmp(argv[i], "--net-slot") == 0 && i + 1 < argc) {
net_cfg.enabled = 1;
net_cfg.local_slot = std::atoi(argv[++i]);
} else if (std::strcmp(argv[i], "--net-input-player") == 0 && i + 1 < argc) {
net_cfg.enabled = 1;
net_cfg.input_player = std::atoi(argv[++i]);
} else if (std::strcmp(argv[i], "--net-bind") == 0 && i + 1 < argc) {
net_cfg.enabled = 1;
std::snprintf(net_cfg.bind_hostport, sizeof(net_cfg.bind_hostport), "%s", argv[++i]);
} else if (std::strcmp(argv[i], "--net-peer") == 0 && i + 1 < argc) {
net_cfg.enabled = 1;
std::snprintf(net_cfg.peer_hostport, sizeof(net_cfg.peer_hostport), "%s", argv[++i]);
} else if (std::strcmp(argv[i], "--net-delay") == 0 && i + 1 < argc) {
net_cfg.enabled = 1;
net_cfg.input_delay = std::atoi(argv[++i]);
} else if (std::strcmp(argv[i], "--net-session-id") == 0 && i + 1 < argc) {
net_cfg.enabled = 1;
net_cfg.session_id = (uint32_t)std::strtoul(argv[++i], nullptr, 10);
} else if (argv[i][0] != '-') {
/* The positional BIOS alias predates the named CLI. Consume it at
* most once. In particular, never let a stray split argument
* replace an explicit --bios path (for example when a Windows
* launcher fails to quote a multi-word --window-title value). */
if (!bios_from_cli) {
bios_path = argv[i];
bios_from_cli = true;
bios_explicit = true;
} else {
std::fprintf(stderr,
"psxrecomp: ignoring unexpected positional argument after BIOS selection: %s\n",
argv[i]);
}
}
}
if (const char *e = std::getenv("PSX_HEADLESS")) {
if (e[0] && e[0] != '0') {
g_headless = 1;
force_no_launcher = true;
}
}
std::string default_game_config_storage;
if (!game_config_path) {
std::filesystem::path default_game_config =
resolve_existing_runtime_path(PSX_DEFAULT_GAME_CONFIG_PATH, argv[0]);
if (!default_game_config.empty()) {
default_game_config_storage = default_game_config.string();
game_config_path = default_game_config_storage.c_str();
}
} else if (!std::filesystem::path(game_config_path).is_absolute()) {
// An explicit --game with a relative path must ALSO anchor on the exe
// dir, never cwd — otherwise the disc / memcard_dir / game_options.toml
// that resolve against this file's parent silently point at cwd. Resolve
// it the same way the default path is resolved.
std::filesystem::path resolved =
resolve_existing_runtime_path(game_config_path, argv[0]);
if (!resolved.empty()) {
default_game_config_storage = resolved.string();
game_config_path = default_game_config_storage.c_str();
}
}
/* Record the resolved config path for the TCP fmv_state report (observability:
* proves which game.toml actually loaded — CLI --game vs the baked default). */
g_active_config_path = game_config_path;
std::filesystem::path memcard_dir;
std::filesystem::path memcard1_path; /* explicit slot-1 .mcd (empty => dir/card1.mcd) */
std::filesystem::path memcard2_path; /* explicit slot-2 .mcd (empty => dir/card2.mcd) */
bool memcard1_enabled = true;
bool memcard2_enabled = true;
/* [controller] device routing (defaults: P1 keyboard/digital, P2 none). */
/* Dev builds default Player 1 to the first connected controller ("auto").
* Strict per-slot routing is the default (PSX_DEV_INPUT off): only the
* assigned device drives each port. Opt in with PSX_DEV_INPUT=1 to merge
* keyboard + every controller onto P1 for quick testing. Release keeps
* "keyboard" until the launcher assigns devices. */
std::string player_device[PSX_MAX_PLAYERS];
int player_mode[PSX_MAX_PLAYERS];
int player_deadzone[PSX_MAX_PLAYERS];
int ctrl_locked_mode[PSX_MAX_PLAYERS];
for (int i = 0; i < PSX_MAX_PLAYERS; ++i) {
#if defined(PSX_DEBUG_TOOLS)
player_device[i] = (i == 0) ? "auto" : "none";
#else
player_device[i] = (i == 0) ? "keyboard" : "none";
#endif
player_mode[i] = PSXRecompV4::PAD_MODE_HYBRID;
player_deadzone[i] = kDefaultDeadzoneRaw;
ctrl_locked_mode[i] = PSXRecompV4::PAD_MODE_HYBRID;
}
bool ctrl_allow_hybrid = true; /* game.toml [controller] allow_hybrid; false hides Hybrid in the launcher */
bool ctrl_lock_mode = false; /* game.toml [controller] lock_mode; true hides the whole pad-mode selector */
bool ctrl_lock_device = false; /* game.toml [controller] lock_device; true hides the Player controller cards entirely */
bool ws_offered = true; /* game.toml [widescreen] offer; false hides the launcher toggle + clamps 4:3 */
bool ws_ultrawide_offered = false;
bool vulkan_offered = false; /* game.toml [video] offer_vulkan; developer opt-in for launcher visibility */
/* Legacy single deadzone (<0 => keep per-slot / input.ini defaults). */
int resolved_deadzone = -1;
/* Localization: the effective language (game.toml default -> settings.toml ->
* launcher choice), applied to the translation layer AFTER the launcher runs.
* lang_menu_options drives the launcher's "Localization" dropdown (empty =>
* no dropdown; only games that declare [localization].languages get one). */
std::string resolved_language = "en";
std::vector<PSXRecompV4::RuntimeConfig::LanguageOption> lang_menu_options;
std::filesystem::path resolved_disc;
std::string window_title = PSX_WINDOW_TITLE;
uint16_t debug_port = (uint16_t)DEFAULT_DEBUG_PORT;
std::string game_name;
std::string game_id;
std::string game_region; /* game.toml [game] region; empty => derive from game_id serial */
int game_players = 1; /* game.toml [game] players; launcher hides the P2 row when 1 */
bool game_has_disc_crc = false;
uint32_t game_disc_crc = 0;
std::string disc_speed; /* "1x" | "2x" | "4x" | "instant" */
int instant_rate = 0; /* 0 = cdrom.c built-in default */
std::vector<PSXRecompV4::RuntimeConfig::WarmCdRoute> warm_cd_routes;
uint32_t game_entry_pc = 0;
bool fast_boot = false; /* DEPRECATED alias: HLE boot-skip only */
bool bios_hle = false; /* HLE kernel-service tier (bios_hle.c) */
bool bios_hle_keep_intro = false;
/* Text-image guard source, captured at config load; armed after the disc
* path is resolved (arm_text_image_guard). */
std::string text_guard_exe_path;
uint32_t text_guard_load_addr = 0;
/* Overlay cache init is deferred until after the launcher window so ABI
* preflight / resident DLL loads do not delay first paint. */
bool deferred_overlay_cache = false;
std::filesystem::path deferred_overlay_project_root;
std::vector<uint32_t> deferred_overlay_native_block;
uint32_t deferred_overlay_config_hash = 0;
std::string deferred_overlay_backend;
bool deferred_has_overlay_ac = false;
std::string deferred_overlay_ac;
bool deferred_has_overlay_ac_tcc = false;
std::string deferred_overlay_ac_tcc;
bool deferred_overlay_capture_history = false;
std::string deferred_overlay_capture_persist_dir;
if (game_config_path) {
try {
const auto gc = PSXRecompV4::load_game_config(game_config_path);
game_name = gc.name;
game_id = gc.id;
game_region = gc.region;
game_players = gc.players;
g_offline_pad_count = game_players > 0 ? game_players : 1;
if (g_offline_pad_count > PSX_MAX_PLAYERS)
g_offline_pad_count = PSX_MAX_PLAYERS;
game_has_disc_crc = gc.has_disc_crc;
game_disc_crc = gc.disc_crc;
if (!gc.discs.empty()) resolved_disc = gc.discs.front();
if (gc.runtime.has_memcard_dir) memcard_dir = gc.runtime.memcard_dir;
if (gc.runtime.has_window_title) window_title = gc.runtime.window_title;
if (gc.runtime.has_debug_port) debug_port = gc.runtime.debug_port;
/* On-the-fly string translation / localization (framework feature —
* text_xlate.cpp): load translations/ *.toml under the project root
* and select the language. Capture inventory is always-on; APPLY is
* gated by language + table presence. See docs/STRING_TRANSLATION.md. */
text_xlate_init(gc.project_root.string().c_str(),
gc.runtime.language.c_str());
resolved_language = gc.runtime.language; /* launcher/settings may override */
lang_menu_options = gc.runtime.languages; /* launcher localization dropdown */
if (gc.runtime.has_disc_speed) disc_speed = gc.runtime.disc_speed;
if (gc.runtime.has_instant_max_per_frame)
instant_rate = gc.runtime.instant_max_per_frame;
warm_cd_routes = gc.runtime.warm_cd_routes;
if (gc.runtime.turbo_loads) {
g_turbo_loads_enabled = 1;
std::fprintf(stdout, "psxrecomp: turbo_loads enabled (opt-in)\n");
}
if (gc.runtime.turbo_audio_sink) {
g_turbo_audio_sink_enabled = 1;
std::fprintf(stdout,
"psxrecomp: turbo_audio_sink enabled (opt-in)\n");
}
{
extern int g_idle_skip_enabled;
const char *idle_env = std::getenv("PSX_IDLE_SKIP");
g_idle_skip_enabled = idle_env
? (idle_env[0] == '1' ? 1 : 0)
: (gc.runtime.idle_skip ? 1 : 0);
std::fprintf(stdout, "psxrecomp: idle_skip %s%s\n",
g_idle_skip_enabled ? "enabled" : "disabled",
idle_env ? " (environment override)" : "");
psx_precise_slice_init_from_env();
}
for (uint32_t site : gc.vsync_event_horizon_sites)
psx_vsync_query_hle_add_event_horizon_site(site);
for (uint32_t site : gc.vsync_event_horizon_extra_sites)
psx_vsync_query_hle_add_extra_event_horizon_site(site);
g_video_scale = gc.runtime.video_supersampling;
g_video_aa = gc.runtime.video_antialiasing;
g_video_texfilter = gc.runtime.video_texture_filter;
g_video_renderer = gc.runtime.video_renderer;
g_video_screen = gc.runtime.video_screen_kind;
g_video_aspect_num = gc.runtime.video_aspect_num;
g_video_aspect_den = gc.runtime.video_aspect_den;
g_low_latency_input = gc.runtime.video_low_latency_input ? 1 : 0;
g_video_vsync = gc.runtime.video_vsync;
g_frame_interpolation = gc.runtime.video_frame_interpolation ? 1 : 0;
g_frame_interpolation_fps = gc.runtime.video_frame_interpolation_fps;
g_fmv_skip_total_table = gc.runtime.video_fmv_skip_total_table;
g_fmv_skip_movie_id = gc.runtime.video_fmv_skip_movie_id;
if (gc.runtime.video_fmv_skip_end_total)
g_fmv_skip_end_total = gc.runtime.video_fmv_skip_end_total;
g_fmv_skip_no_xa = gc.runtime.video_fmv_skip_no_xa ? 1 : 0;
g_fmv_skip_no_xa_hold = gc.runtime.video_fmv_skip_no_xa_hold;
g_ws_anchor_addr = gc.ws_sprite_anchor_addr;
g_ws_hud_sprt = gc.ws_hud_sprt_squash;
/* [widescreen] full_2d — opt a pure-2D sprite game (MMX6) into the
* widescreen present path. Applied to the GPU layer up front so the
* ws engage at game entry classifies every frame as gameplay. */
gpu_ws_set_full_2d(gc.ws_full_2d ? 1 : 0);
/* [widescreen.bg2d] engine tile-ring layout for the freshness
* refill shared by the MMX5/MMX6 2D background hook. */
gpu_ws_bg2d_configure(gc.ws_bg2d_layer_base,
gc.ws_bg2d_ring_base,
gc.ws_bg2d_map_size_addr,
gc.ws_bg2d_layer_stride_addr,
gc.ws_bg2d_ring_cols,
gc.ws_bg2d_layer_count,
gc.ws_bg2d_layer_struct_stride,
gc.ws_bg2d_packet_cap);
/* [widescreen] gte_game_mode — 3D-title gameplay detector (Ape). */
gpu_ws_set_gte_game_mode(gc.ws_gte_game_mode ? 1 : 0);
/* Keep titles with known native-wide regressions on the original
* projection-squash + stretched-present widescreen path. */
g_ws_native_wide = gc.ws_native_wide ? 1 : 0;
/* [widescreen] nw_hud_corners — push HUD to the true wide corners. */
gpu_ws_set_nw_hud_corners(gc.ws_nw_hud_corners ? 1 : 0);
/* Targeted left-HUD packet range — avoids shifting 2D scenery. */
gpu_ws_set_nw_left_hud_packet_range(gc.ws_nw_left_hud_packet_lo,
gc.ws_nw_left_hud_packet_hi);
/* [widescreen] nw_backdrop — stretch full-frame 2D sky backdrop. */
gpu_ws_set_nw_backdrop(gc.ws_nw_backdrop ? 1 : 0);
/* [widescreen] nw_flat_backdrop — stretch flat sky/backdrop prims
* in the native-wide mirror, preserving the canonical 4:3 image. */
gpu_ws_set_nw_flat_backdrop(gc.ws_nw_flat_backdrop ? 1 : 0);
/* [widescreen] nw_phase_backdrop — stretch only the textured
* backdrop phase emitted before shaded 3D foreground geometry. */
gpu_ws_set_nw_phase_backdrop(gc.ws_nw_phase_backdrop ? 1 : 0);
gpu_ws_set_nw_textured_edges(gc.ws_nw_textured_edges ? 1 : 0,
gc.ws_nw_textured_edge_scale);
gl_renderer_set_wide_fast(gc.ws_nw_full_mirror ? 0 : 1);
{
std::vector<uint32_t> addresses, expected;
addresses.reserve(gc.ws_signed_x_bound_sites.size());
expected.reserve(gc.ws_signed_x_bound_sites.size());
for (const auto& site : gc.ws_signed_x_bound_sites) {
addresses.push_back(site.address);
expected.push_back(site.expected);
}
gpu_ws_set_signed_x_bound_sites(addresses.data(), expected.data(),
(int)addresses.size());
}
/* [widescreen] clear_reveal — enable opted-in scene/map-boundary
* cleanup of synthetic native-wide margins. */
gpu_ws_set_clear_reveal(gc.ws_clear_reveal ? 1 : 0);
gpu_ws_set_cull_guard_pixels(gc.ws_cull_guard_pixels);
gpu_ws_set_explicit_cull_sites(
gc.ws_cull_bias_sites.data(), (int)gc.ws_cull_bias_sites.size(),
gc.ws_cull_slti_sites.data(), (int)gc.ws_cull_slti_sites.size(),
gc.ws_cull_range_sites.data(), (int)gc.ws_cull_range_sites.size());
gpu_ws_set_negsub_cull_sites(
gc.ws_cull_negsub_sites.data(), (int)gc.ws_cull_negsub_sites.size());
gpu_ws_set_vxrange_cull_sites(
gc.ws_cull_vxrange_sites.data(), (int)gc.ws_cull_vxrange_sites.size());
gpu_ws_set_depth_cull_sites(
gc.ws_cull_depth_sites.data(), (int)gc.ws_cull_depth_sites.size());
gpu_ws_set_plane_nx_sites(
gc.ws_cull_plane_nx_sites.data(), (int)gc.ws_cull_plane_nx_sites.size());
gpu_ws_set_xclip_load_sites(
gc.ws_cull_xclip_load_sites.data(), (int)gc.ws_cull_xclip_load_sites.size());
gte_ws_configure_dome_sites(
gc.ws_dome_call_sites.data(), (int)gc.ws_dome_call_sites.size());
/* [widescreen.cull] per-game gates + signature immediates for the
* pattern-scanned interp widen hooks. A title that never opted in
* must never have its live code scanned and rewritten. */
gpu_ws_set_auto_hooks(gc.ws_auto_screen_x_cull ? 1 : 0,
gc.ws_auto_backdrop_preload ? 1 : 0);
if (!gc.ws_cull_w_imms.empty() || !gc.ws_cull_h_imms.empty())
gpu_ws_set_cull_imms(gc.ws_cull_w_imms.data(), (int)gc.ws_cull_w_imms.size(),
gc.ws_cull_h_imms.data(), (int)gc.ws_cull_h_imms.size());
ws_offered = gc.ws_offered;
ws_ultrawide_offered = gc.ws_ultrawide_offered;
vulkan_offered = gc.vulkan_offered;
/* Register the [widescreen.backdrop] store PCs so the dirty-RAM
* interpreter applies the backdrop screenX squash on the interp
* path (overlay backdrop handlers run interpreted when no cache
* DLL is loaded — the recompiler emit only covers native). */
if (!gc.ws_backdrop_x_sites.empty())
psx_ws_set_backdrop_sites(gc.ws_backdrop_x_sites.data(),
(int)gc.ws_backdrop_x_sites.size());
g_audio_spu_hq = gc.runtime.audio_spu_hq;
g_auto_skip_fmv = gc.runtime.video_auto_skip_fmv ? 1 : 0;
/* [controller] game-declared input defaults (settings.toml/launcher
* still override below). */
if (gc.runtime.has_default_mode) {
for (int i = 0; i < PSX_MAX_PLAYERS; ++i) {
player_mode[i] = (i == 0) ? gc.runtime.default_p1_mode
: gc.runtime.default_p2_mode;
/* Beyond P2, reuse default_mode (same as P1 when set via default_mode). */
if (i >= 2) player_mode[i] = gc.runtime.default_p1_mode;
}
}
for (int i = 0; i < PSX_MAX_PLAYERS; ++i)
ctrl_locked_mode[i] = player_mode[i];
ctrl_allow_hybrid = gc.runtime.controller_allow_hybrid;
ctrl_lock_mode = gc.runtime.controller_lock_mode;
ctrl_lock_device = gc.runtime.controller_lock_device;
if (gc.runtime.has_deadzone) {
resolved_deadzone = gc.runtime.deadzone;
for (int i = 0; i < PSX_MAX_PLAYERS; ++i)
player_deadzone[i] = gc.runtime.deadzone;
}
/* Console port for SCPH-1070 when offline/netplay arms multitap.
* Most titles use Port 1; Bomberman Party Edition needs Port 2. */
if (gc.runtime.has_multitap_port) {
const int phys = (gc.runtime.multitap_port == 2) ? 1 : 0;
sio_set_multitap_port(phys);
std::fprintf(stdout,
"psxrecomp: multitap on console Port %d\n",
gc.runtime.multitap_port);
}
/* LEGACY per-game pad-config opt-in (default modern). Only Tomba sets
* it, so its launcher Hybrid mode's analog<->digital flip doesn't make
* libpad manufacture a 1-frame "pad unplugged". sio_init() does not
* touch this flag, so applying it here (config-load time) is stable.
* Full history + removal plan: psxrecomp sio.c g_pad_legacy_cfg. */
sio_set_legacy_cfg(gc.runtime.legacy_pad_config ? 1 : 0);
{ const char *e = std::getenv("PSX_GL_FORCE_CPU_PRESENT");
if (e && e[0] && e[0] != '0') g_gl_fbo_present = 0; }
game_entry_pc = gc.entry_pc;
fast_boot = gc.runtime.fast_boot;
bios_hle = gc.runtime.bios_hle;
bios_hle_keep_intro = gc.runtime.bios_hle_keep_intro;
/* Developer compatibility finding, applied before BIOS selection.
* Not exposed to settings.toml on purpose — see BIOS_SELECTION.md. */
s_openbios_allowed = gc.runtime.openbios;
/* Let the dispatch layer distinguish "dirty because text was
* loaded" from "diverged because runtime wrote different code over
* the original EXE image". Packed/self-modifying games can rewrite
* their own text; those pages must execute from live RAM, not stale
* static native code. Arming is DEFERRED until the disc path is
* resolved (arm_text_image_guard below): release installs have no
* local EXE file, so the guard extracts the boot EXE from the
* user's disc image instead. */
text_guard_exe_path = gc.exe_path.string();
text_guard_load_addr = gc.load_address;
/* HLE-tier scheduler subsystem replacement default (env
* PSX_HLE_SCHEDULER still wins; latched at first dispatch). */
psx_hle_scheduler_set_default(gc.runtime.hle_scheduler ? 1 : 0);
/* Pin the overlay-region floor to THIS game's main-EXE text end so
* runtime-loaded overlays (which load just above it) are dispatched
* via in-interpreter local-flow chaining, NOT the slow block-by-block
* + bail-prone non-local-call path. Hardcoding the floor to Tomba 1's
* text end (0x98000) wedged Tomba 2 (text ends 0x38800, overlays at
* 0x85000+) at the Whoopee-Camp splash. See dirty_ram_interp.h. */
{
extern uint32_t g_overlay_region_floor;
uint32_t text_end = (gc.load_address + gc.text_size) & 0x1FFFFFFFu;
if (text_end > 0x00010000u /* DIRTY_RAM_KERNEL_WINDOW_END */)
g_overlay_region_floor = text_end;
std::fprintf(stdout,
"psxrecomp: overlay_region_floor = 0x%05X (game text end)\n",
g_overlay_region_floor);
}
/* Overlay DLL cache (Layer A): stash config now; heavy init
* (cache scan / ABI preflight / resident LoadLibrary) runs after
* the launcher window so first UI paint is not blocked. */
if (gc.runtime.overlay_cache) {
deferred_overlay_cache = true;
deferred_overlay_project_root = gc.project_root;
deferred_overlay_native_block = gc.runtime.overlay_native_block;
deferred_overlay_config_hash =
PSXRecompV4::overlay_codegen_config_hash(gc);
deferred_overlay_backend = gc.runtime.overlay_backend;
deferred_has_overlay_ac = gc.runtime.has_overlay_autocompile_cmd;
deferred_overlay_ac = gc.runtime.overlay_autocompile_cmd;
deferred_has_overlay_ac_tcc = gc.runtime.has_overlay_autocompile_cmd_tcc;
deferred_overlay_ac_tcc = gc.runtime.overlay_autocompile_cmd_tcc;
deferred_overlay_capture_history = gc.runtime.overlay_capture_history;
deferred_overlay_capture_persist_dir = gc.runtime.overlay_capture_persist_dir;
}
std::fprintf(stdout, "psxrecomp: loaded game config %s (%s, %s)\n",
game_config_path, game_name.c_str(), game_id.c_str());
} catch (const std::exception& ex) {
std::fprintf(stderr, "psxrecomp: failed to load --game %s: %s\n",
game_config_path, ex.what());
return 1;
}
}
#if defined(RECOMP_LAUNCHER)
launcher_boot_timing_mark("host:game_config_done");
#endif
if (!game_name.empty()) s_picker_game_name = game_name;
/* Layer the launcher-written settings.toml (next to the exe) over the
* bundled game.toml. Any field present there overrides the config value;
* the command line (--bios/--disc) still wins over the file. Absent =>
* fall through to game.toml. The file is the launcher's persistence. */
bool skip_launcher_setting = false; /* [launcher] skip_launcher from settings.toml */
std::string settings_bios_storage; /* must outlive resolve_bios_for_runtime */
std::string netplay_player_name; /* [netplay] player_name from settings.toml */
bool has_netplay_player_name = false;
bool user_settings_has_renderer = false;
{
std::filesystem::path settings_path =
exe_dir_from_argv(argv[0]) / "settings.toml";
#if defined(RECOMP_LAUNCHER)
g_lnch_settings_path = settings_path;
#endif
const PSXRecompV4::UserSettings us =
PSXRecompV4::load_user_settings(settings_path);
user_settings_has_renderer = us.has_renderer;
if (us.parse_error) {
/* The file exists but is not valid TOML: every setting in it (the
* user's renderer choice, BIOS/disc paths, ...) is being ignored,
* and any later launcher save would overwrite it with defaults.
* Preserve their file and say so loudly instead of both failing
* silently (GH Tomba2Recomp#1 triage: a stray character disabled a
* user's whole settings file with no indication anywhere). */
std::error_code rn_ec;
std::filesystem::path bad = settings_path;
bad += ".bad";
std::filesystem::remove(bad, rn_ec);
rn_ec.clear();
std::filesystem::rename(settings_path, bad, rn_ec);
launcher_warning("Settings file ignored",
"settings.toml has a TOML syntax error, so ALL settings in it were "
"ignored this run (renderer, BIOS/disc paths, everything).\n\n" +
(rn_ec ? "The broken file was left at:\n" + settings_path.string()
: "The broken file was preserved as:\n" + bad.string()) +
"\n\nFix the syntax error and restore the file, or set your options "
"again from the launcher (a fresh settings.toml will be written).");
}
if (us.has_skip_launcher) skip_launcher_setting = us.skip_launcher;
if (us.has_renderer) {
if (us.renderer == 2 && !vulkan_offered) {
g_video_renderer = 1;
std::fprintf(stdout,
"psxrecomp: settings requested Vulkan, but this game does not "
"offer Vulkan in the launcher; using OpenGL.\n");
} else {
g_video_renderer = us.renderer;
}
}
if (us.has_netplay_player_name && !us.netplay_player_name.empty()) {
netplay_player_name = us.netplay_player_name;
has_netplay_player_name = true;
}
#if defined(RECOMP_LAUNCHER)
if (us.has_netplay_lobby_url && !us.netplay_lobby_url.empty())
g_lnch_lobby_url = us.netplay_lobby_url;
#endif
if (us.has_supersampling) g_video_scale = us.supersampling;
if (us.has_window_width) g_video_win_w = us.window_width;
if (us.has_antialiasing) g_video_aa = us.antialiasing;
if (us.has_texture_filter) g_video_texfilter = us.texture_filter;
if (us.has_screen_kind) g_video_screen = us.screen_kind;
if (us.has_auto_skip_fmv) g_auto_skip_fmv = us.auto_skip_fmv ? 1 : 0;
if (us.has_turbo_loads) g_turbo_loads_enabled = us.turbo_loads ? 1 : 0;
if (us.has_fast_boot) fast_boot = us.fast_boot;
if (us.has_bios_hle) bios_hle = us.bios_hle;
if (us.has_fullscreen) g_fullscreen = us.fullscreen;
if (us.has_aspect_ratio) {
g_video_aspect_num = us.aspect_num;
g_video_aspect_den = us.aspect_den;
}
if (us.has_spu_hq) g_audio_spu_hq = us.spu_hq;
if (us.has_bios_path && !bios_from_cli && !us.bios_path.empty()) {
settings_bios_storage = us.bios_path.string();
bios_path = settings_bios_storage.c_str();
bios_explicit = true;
}
if (us.has_disc_path && !disc_override_path)
resolved_disc = normalize_disc_path_for_launch(us.disc_path);
if (us.has_memcard_dir) memcard_dir = us.memcard_dir;
if (us.has_memcard1_path) memcard1_path = us.memcard1_path;
if (us.has_memcard2_path) memcard2_path = us.memcard2_path;
if (us.has_memcard1_enabled) memcard1_enabled = us.memcard1_enabled;
if (us.has_memcard2_enabled) memcard2_enabled = us.memcard2_enabled;
if (us.has_language) resolved_language = us.language;
{
const int n = std::min(PSX_MAX_PLAYERS,
PSXRecompV4::UserSettings::kMaxControllerPlayers);
for (int i = 0; i < n; ++i) {
if (us.has_p_device[i]) player_device[i] = us.p_device[i];
if (us.has_p_mode[i]) player_mode[i] = us.p_mode[i];
if (us.has_p_deadzone[i]) player_deadzone[i] = us.p_deadzone[i];
}
if (us.has_deadzone) resolved_deadzone = us.deadzone;
}
if (us.has_low_latency_input) g_low_latency_input = us.low_latency_input ? 1 : 0;
if (us.has_vsync) g_video_vsync = us.vsync;
if (us.has_frame_interpolation)
g_frame_interpolation = us.frame_interpolation ? 1 : 0;
if (us.has_frame_interpolation_fps)
g_frame_interpolation_fps = us.frame_interpolation_fps;
}
/* lock_mode: the game supports exactly ONE pad type (e.g. X4 / Tomba 2 are
* digital-only — X4's pre-DualShock libpad silently discards input from a
* pad answering id 0x73). The launcher hides its selector for such games,
* but that alone left two holes: (a) launcher-less builds still honoured a
* settings.toml p1_mode/p2_mode, and (b) a settings.toml persisted BEFORE
* the game declared lock_mode fed the stale mode back as the launcher's
* locked_mode. Clamp to the game-declared modes here, after every
* config/settings source has been applied, so a locked game can never boot
* a pad type it doesn't support. */
if (ctrl_lock_mode) {
for (int i = 0; i < PSX_MAX_PLAYERS; ++i)
player_mode[i] = ctrl_locked_mode[i];
}
/* [widescreen] offer=false: this title's widescreen is unported/unvalidated,
* so the launcher hides its toggle — and, same completeness treatment as
* lock_mode above, the runtime clamps the display aspect to native 4:3 here
* so a stale persisted 16:9 in settings.toml can't engage the hack in
* launcher-less builds either. */
if (!ws_offered && (g_video_aspect_num != 4 || g_video_aspect_den != 3)) {
std::fprintf(stdout, "psxrecomp: widescreen not offered for this title; "
"clamping display aspect %d:%d -> 4:3\n",
g_video_aspect_num, g_video_aspect_den);
g_video_aspect_num = 4;
g_video_aspect_den = 3;
}
if (!ws_ultrawide_offered && g_video_aspect_num * 9 == g_video_aspect_den * 21) {
std::fprintf(stdout, "psxrecomp: 21:9 is not offered for this title; clamping to %s\n",
ws_offered ? "16:9" : "4:3");
g_video_aspect_num = ws_offered ? 16 : 4;
g_video_aspect_den = ws_offered ? 9 : 3;
}
/* Latency knobs: env overrides win over config (for A/B measurement).
* PSX_LOW_LATENCY_INPUT=0/1 ; PSX_VSYNC=1(vsync)/0(immediate)/-1(adaptive);
* PSX_FRAME_INTERPOLATION=0/1; PSX_FRAME_INTERPOLATION_FPS=0|90+. */
if (const char *e = std::getenv("PSX_LOW_LATENCY_INPUT")) g_low_latency_input = atoi(e) ? 1 : 0;
if (const char *e = std::getenv("PSX_VSYNC")) g_video_vsync = atoi(e);
if (const char *e = std::getenv("PSX_SMOOTH_60FPS"))
psx_smooth_60fps_set(atoi(e) ? 1 : 0);
if (const char *e = std::getenv("PSX_FRAME_INTERPOLATION"))
g_frame_interpolation = atoi(e) ? 1 : 0;
if (const char *e = std::getenv("PSX_FRAME_INTERPOLATION_FPS")) {
int fps = atoi(e);
if (fps == 0 || fps >= 90) g_frame_interpolation_fps = fps;
}
/* Apply writable-state isolation before game-options and launcher setup,
* not with the later renderer/port overrides. Explicit slot paths from a
* shared settings.toml must not escape the isolated directory. */
if (cli_memcard_dir) {
memcard_dir = std::filesystem::path(cli_memcard_dir);
if (memcard_dir.is_relative())
memcard_dir = exe_dir_from_argv(argv[0]) / memcard_dir;
memcard_dir = memcard_dir.lexically_normal();
memcard1_path.clear();
memcard2_path.clear();
std::error_code memcard_ec;
std::filesystem::create_directories(memcard_dir, memcard_ec);
if (memcard_ec) {
std::fprintf(stderr,
"psxrecomp: cannot create --memcard-dir %s: %s\n",
memcard_dir.string().c_str(), memcard_ec.message().c_str());
return 1;
}
std::fprintf(stdout, "psxrecomp: CLI writable-state directory = %s\n",
memcard_dir.string().c_str());
}
/* Resolve the effective memory-card directory now (before the launcher) so
* the launcher can introspect the real card files. The same default is used
* by the runtime below. */
if (memcard_dir.empty()) memcard_dir = default_memcard_dir(argv[0]);
/* The game's OWN native OPTION settings (game_options.toml, next to
* game.toml) — persisted across launches, kept separate from game.toml
* (recomp config) and settings.toml (launcher). Values are saved to
* <memcard_dir>/<game_id>.options. Best-effort: a malformed file disables
* the feature, it never blocks boot. */
if (game_config_path) {
try {
std::filesystem::path go_path =
std::filesystem::path(game_config_path).parent_path() / "game_options.toml";
const PSXRecompV4::GameOptions go = PSXRecompV4::load_game_options(go_path);
if (!go.options.empty()) {
std::vector<uint32_t> go_addrs;
std::vector<uint8_t> go_sizes;
std::vector<const char*> go_names;
std::vector<int32_t> go_vmins;
std::vector<int32_t> go_vmaxs;
for (const auto& o : go.options) {
go_addrs.push_back(o.addr);
go_sizes.push_back((uint8_t)o.size);
go_names.push_back(o.name.c_str());
/* Declared range validates the persisted value at restore; no
* range => full int32 span (accept anything that fits). */
go_vmins.push_back(o.has_range ? (int32_t)o.vmin : (int32_t)0x80000000);
go_vmaxs.push_back(o.has_range ? (int32_t)o.vmax : (int32_t)0x7FFFFFFF);
}
std::string go_state = (memcard_dir /
((game_id.empty() ? std::string("game") : game_id) + ".options")).string();
game_options_configure(go_state.c_str(), go_addrs.data(), go_sizes.data(),
go_names.data(), go_vmins.data(), go_vmaxs.data(),
(int)go_addrs.size());
std::fprintf(stdout,
"psxrecomp: game options persistence armed (%d field(s)) -> %s\n",
(int)go_addrs.size(), go_state.c_str());
}
} catch (const std::exception& ex) {
std::fprintf(stderr, "psxrecomp: game_options.toml ignored: %s\n", ex.what());
}
}
#if defined(RECOMP_LAUNCHER)
launcher_boot_timing_mark("host:pre_overlay_worker");
#endif
/* Overlay cache: run ABI preflight / resident DLL loads on a worker so the
* launcher can open immediately and init overlaps with UI time. Join before
* guest boot. When the launcher is skipped, the join still runs below. */
std::thread overlay_init_thread;
std::exception_ptr overlay_init_exc;
auto run_deferred_overlay_init = [&]() {
std::filesystem::path exe_dir = exe_dir_from_argv(argv[0]);
std::string cache_dir = (exe_dir / "cache").string();
std::filesystem::path captures_path =
resolve_overlay_capture_path(deferred_overlay_project_root, exe_dir, game_id);
if (!overlay_capture_set_path(captures_path.string().c_str())) {
captures_path = exe_dir / "overlay_captures.json";
if (!overlay_capture_set_path(captures_path.string().c_str())) {
throw std::runtime_error(
"overlay capture path exceeds runtime limit");
}
}
overlay_capture_set_enabled(1);
std::fprintf(stdout,
"psxrecomp: additive overlay capture store = %s (+ .d history)\n",
captures_path.string().c_str());
std::string capture_persist_dir;
if (deferred_overlay_capture_history &&
!deferred_overlay_capture_persist_dir.empty()) {
std::filesystem::path persist =
deferred_overlay_project_root / deferred_overlay_capture_persist_dir;
std::error_code persist_ec;
std::filesystem::create_directories(persist, persist_ec);
if (persist_ec) {
std::fprintf(stderr,
"psxrecomp: cannot create overlay capture history %s: %s\n",
persist.string().c_str(), persist_ec.message().c_str());
} else {
capture_persist_dir = persist.string();
}
}
overlay_capture_configure_history(
deferred_overlay_capture_history ? 1 : 0,
capture_persist_dir.empty() ? nullptr :
capture_persist_dir.c_str(),
game_id.c_str());
overlay_loader_init(cache_dir.c_str(), game_id.c_str(),
deferred_overlay_config_hash);
for (uint32_t addr : deferred_overlay_native_block) {
overlay_loader_native_block_add(addr);
}
if (!deferred_overlay_native_block.empty()) {
std::fprintf(stdout,
"psxrecomp: overlay native blocklist seeded with %zu entr%s\n",
deferred_overlay_native_block.size(),
deferred_overlay_native_block.size() == 1 ? "y" : "ies");
}
overlay_autocapture_set_enabled(0);
const char *cfg_backend = deferred_overlay_backend.empty()
? nullptr : deferred_overlay_backend.c_str();
int gcc_avail = deferred_has_overlay_ac
&& autocompile_toolchain_available();
OverlayBackend eff = overlay_backend_resolve(cfg_backend, gcc_avail);
std::string built_tcc_cmd;
std::string env_ac_cmd;
const std::string *ac_cmd = nullptr;
if (eff == OVERLAY_BACKEND_TCC) {
if (deferred_has_overlay_ac_tcc) {
ac_cmd = &deferred_overlay_ac_tcc;
} else {
extern int g_psx_cps_mode;
std::filesystem::path xd = exe_dir_from_argv(argv[0]);
std::filesystem::path tk = xd / "overlay_toolchain";
std::filesystem::path py = tk / "python" / "python.exe";
if (std::filesystem::exists(py)) {
auto cmd_quote = [](const std::string& s) {
return std::string("\"") + s + "\"";
};
built_tcc_cmd =
cmd_quote(py.string()) + " " +
cmd_quote((tk / "compile_overlays.py").string()) +
" --captures " + cmd_quote(captures_path.string()) +
" --game-toml " + cmd_quote(std::string(
game_config_path ? game_config_path : "game.toml")) +
" --recompiler " + cmd_quote((tk / "psxrecomp-game.exe").string()) +
" --runtime-include " + cmd_quote((tk / "include").string()) +
" --out-dir " + cmd_quote((xd / "cache").string()) +
(g_psx_cps_mode ? " --cps" : "") +
" --compiler tcc --tcc " +
cmd_quote((tk / "tcc" / "tcc.exe").string());
ac_cmd = &built_tcc_cmd;
std::fprintf(stdout,
"psxrecomp: tcc tier using bundled toolchain (%s)\n",
tk.string().c_str());
} else {
std::fprintf(stdout,
"psxrecomp: tcc tier active but no bundled toolchain at %s "
"(overlay gaps -> interpreter)\n", tk.string().c_str());
}
}
} else {
if (deferred_has_overlay_ac)
ac_cmd = &deferred_overlay_ac;
}
if (const char *e = std::getenv("PSX_OVERLAY_AUTOCOMPILE_CMD")) {
if (e[0]) {
env_ac_cmd = e;
ac_cmd = &env_ac_cmd;
std::fprintf(stdout,
"psxrecomp: overlay autocompile command overridden by environment\n");
}
}
if (const char *e = std::getenv("PSX_OVERLAY_AUTOCOMPILE_OFF")) {
if (e[0] && e[0] != '0') {
ac_cmd = nullptr;
std::fprintf(stdout,
"psxrecomp: overlay autocompile disabled by environment\n");
}
}
if (ac_cmd) {
autocompile_set_cache_paths(cache_dir.c_str(),
captures_path.string().c_str());
std::string ac_cwd = deferred_overlay_project_root.string();
if (const char *e = std::getenv("PSX_OVERLAY_AUTOCOMPILE_CWD")) {
if (e[0]) ac_cwd = e;
}
autocompile_configure(ac_cmd->c_str(), ac_cwd.c_str());
overlay_autocapture_set_enabled(1);
std::fprintf(stdout,
"psxrecomp: overlay autocompile enabled (%s); cache=%s; captures=%s\n",
overlay_backend_name(eff), cache_dir.c_str(),
captures_path.string().c_str());
}
code_provider_init(cfg_backend, gcc_avail);
};
if (deferred_overlay_cache) {
overlay_init_thread = std::thread([&]() {
try {
run_deferred_overlay_init();
} catch (...) {
overlay_init_exc = std::current_exception();
}
});
}
#if defined(RECOMP_LAUNCHER)
/* Integrated recomp-ui launcher: shown in its own GL window before the emulator
* boots. Seeded with the effective settings (game.toml ∪ settings.toml);
* on LAUNCH the user's choices are persisted to settings.toml and applied.
* The launcher window/GL context is destroyed afterward, but SDL subsystems
* stay initialized so the game window can open without a second SDL_Init.
*
* Skip the GUI (boot straight in) when ANY of: PSX_NO_LAUNCHER=1 env,
* --no-launcher, or the persisted [launcher] skip_launcher setting — unless
* --launcher forces it back on (mirrors snesrecomp's SkipLauncher / --launcher).
* This removes the dismiss-the-launcher round-trip for scripted/debug runs. */
const bool want_launcher =
force_launcher ||
(!std::getenv("PSX_NO_LAUNCHER") && !force_no_launcher && !skip_launcher_setting);
if (want_launcher) {
launcher_boot_timing_mark("host:before_sdl_init");
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_GAMECONTROLLER) == 0) {
launcher_boot_timing_mark("host:after_sdl_init");
recomp_launcher_set_preserve_sdl(1);
int lr = 2; /* 0 = launch, 1 = quit, 2 = unavailable */
PSXRecompV4::UserSettings seed;
seed.renderer = g_video_renderer; seed.has_renderer = true;
seed.supersampling = g_video_scale; seed.has_supersampling = true;
seed.antialiasing = g_video_aa; seed.has_antialiasing = true;
seed.texture_filter = g_video_texfilter; seed.has_texture_filter = true;
seed.screen_kind = g_video_screen; seed.has_screen_kind = true;
seed.auto_skip_fmv = (g_auto_skip_fmv != 0); seed.has_auto_skip_fmv = true;
seed.turbo_loads = (g_turbo_loads_enabled != 0); seed.has_turbo_loads = true;
seed.fast_boot = fast_boot; seed.has_fast_boot = true;
seed.bios_hle = bios_hle; seed.has_bios_hle = true;
seed.fullscreen = g_fullscreen; seed.has_fullscreen = true;
seed.frame_interpolation = (g_frame_interpolation != 0);
seed.has_frame_interpolation = true;
seed.frame_interpolation_fps = g_frame_interpolation_fps;
seed.has_frame_interpolation_fps = true;
seed.aspect_num = g_video_aspect_num;
seed.aspect_den = g_video_aspect_den; seed.has_aspect_ratio = true;
seed.spu_hq = g_audio_spu_hq; seed.has_spu_hq = true;
seed.skip_launcher = skip_launcher_setting; seed.has_skip_launcher = true;
if (has_netplay_player_name) {
seed.netplay_player_name = netplay_player_name;
seed.has_netplay_player_name = true;
}
if (!g_lnch_lobby_url.empty()) {
seed.netplay_lobby_url = g_lnch_lobby_url;
seed.has_netplay_lobby_url = true;
}
if (bios_explicit && bios_path && bios_path[0]) {
seed.bios_path = bios_path;
seed.has_bios_path = true;
}
/* Hydrate launcher BIOS from bios.cfg when settings.toml has none,
* and rewrite relative paths to absolute so reopen after generate
* does not depend on cwd. */
if (!seed.has_bios_path) {
std::filesystem::path cached =
read_cached_path(argv[0], "bios.cfg");
if (!cached.empty()) {
seed.bios_path = cached;
seed.has_bios_path = true;
}
}
if (seed.has_bios_path) {
std::filesystem::path resolved =
resolve_bios_path(seed.bios_path.string().c_str(), argv[0]);
std::error_code ec;
if (!resolved.empty() && std::filesystem::exists(resolved, ec)) {
seed.bios_path = std::filesystem::weakly_canonical(resolved, ec);
if (ec) seed.bios_path = std::filesystem::absolute(resolved, ec);
seed.has_bios_path = true;
} else {
seed.bios_path.clear();
seed.has_bios_path = false;
}
}
if (!resolved_disc.empty()) { seed.disc_path = resolved_disc; seed.has_disc_path = true; }
seed.memcard_dir = memcard_dir; seed.has_memcard_dir = true;
seed.memcard1_enabled = memcard1_enabled; seed.has_memcard1_enabled = true;
seed.memcard2_enabled = memcard2_enabled; seed.has_memcard2_enabled = true;
if (!memcard1_path.empty()) { seed.memcard1_path = memcard1_path; seed.has_memcard1_path = true; }
if (!memcard2_path.empty()) { seed.memcard2_path = memcard2_path; seed.has_memcard2_path = true; }
seed.language = resolved_language; seed.has_language = true;
{
const int n = std::min(PSX_MAX_PLAYERS,
PSXRecompV4::UserSettings::kMaxControllerPlayers);
for (int i = 0; i < n; ++i) {
seed.p_device[i] = player_device[i];
seed.has_p_device[i] = true;
seed.p_mode[i] = player_mode[i];
seed.has_p_mode[i] = true;
seed.p_deadzone[i] = player_deadzone[i];
seed.has_p_deadzone[i] = true;
}
seed.deadzone = player_deadzone[0];
seed.has_deadzone = true;
}
seed.window_width = g_video_win_w; seed.has_window_width = true;
/* recomp-ui creates + owns its SDL2/GL window internally, so there
* is no launcher window/context to manage here. */
std::string assets_dir_str = exe_dir_from_argv(argv[0]).string();
/* Same path the runtime's psx_keybinds_init(argv0) reads — keep the
* launcher Controls page and in-game keyboard map on one file. */
static std::string s_rui_keybinds_path;
s_rui_keybinds_path = (exe_dir_from_argv(argv[0]) / "keybinds.ini").string();
std::string rui_initial_disc = resolved_disc.string();
std::string rui_title = (game_name.empty() ? std::string("PSX") : game_name)
+ " - Launcher";
RecompLauncherCSettings ls{};
ls.output_method = 2; /* OpenGL */
ls.window_scale = std::max(1, std::min(4, g_video_win_w / 320));
ls.fullscreen = seed.fullscreen;
ls.ignore_aspect = 0;
ls.linear_filter = (seed.texture_filter != 0) ? 1 : 0;
ls.widescreen = (seed.aspect_num == 16 && seed.aspect_den == 9) ? 1 : 0;
ls.widescreen_hud = ls.widescreen;
ls.enable_audio = 1;
ls.audio_freq = 44100;
ls.volume = 100;
{
const int n = std::min(PSX_MAX_PLAYERS, RECOMP_LAUNCHER_MAX_PLAYERS);
for (int i = 0; i < n; ++i) {
const std::string& d = player_device[i];
ls.player_src[i] = (d == "keyboard") ? 1
: (d == "none" || d.empty()) ? 0 : 2;
ls.deadzone[i] = (player_deadzone[i] * 100 + 16383) / 32767;
ls.pad_mode[i] = (ls.player_src[i] == 1)
? PSXRecompV4::PAD_MODE_DIGITAL
: player_mode[i];
ls.player_gamepad_guid[i][0] = '\0';
if (ls.player_src[i] == 2 && !d.empty() && d != "auto" &&
d != "gamepad" && d != "controller") {
std::snprintf(ls.player_gamepad_guid[i],
sizeof(ls.player_gamepad_guid[i]), "%s",
d.c_str());
}
}
}
ls.skip_launcher = seed.skip_launcher ? 1 : 0;
ls.msu1_enabled = 0;
ls.msu1_dir[0] = '\0';
std::snprintf(ls.netplay_player_name, sizeof(ls.netplay_player_name), "%s",
has_netplay_player_name ? netplay_player_name.c_str() : "");
/* aspect_index: 0 = 4:3, 1 = 16:9, 2 = 21:9 (see RecompLauncherCSettings). */
ls.aspect_index = (seed.aspect_num * 9 == seed.aspect_den * 21) ? 2 :
(seed.aspect_num == 16 && seed.aspect_den == 9) ? 1 : 0;
/* ---- deeper PSX-style settings (capability-gated via launcher_profile
* below). Sourced 1:1 from PSXRecompV4::UserSettings (config_loader.h). */
ls.window_width = seed.window_width;
ls.renderer = seed.renderer;
/* Fresh / invalid seed → OpenGL (DEFAULT_VIDEO_RENDERER), never
* Software — unless the user explicitly saved software. */
if (ls.renderer < 0 || ls.renderer > (vulkan_offered ? 2 : 1))
ls.renderer = PSXRecompV4::DEFAULT_VIDEO_RENDERER;
if (ls.renderer == 0 && !user_settings_has_renderer &&
PSXRecompV4::DEFAULT_VIDEO_RENDERER != 0)
ls.renderer = PSXRecompV4::DEFAULT_VIDEO_RENDERER;
ls.supersampling = seed.supersampling;
ls.antialiasing = seed.antialiasing ? 1 : 0;
ls.texture_filter = seed.texture_filter;
ls.screen_kind = seed.screen_kind;
ls.frame_interp = seed.frame_interpolation ? 1 : 0;
ls.frame_interp_fps = seed.frame_interpolation_fps;
ls.spu_hq = seed.spu_hq ? 1 : 0;
ls.auto_skip_fmv = seed.auto_skip_fmv ? 1 : 0;
ls.turbo_loads = seed.turbo_loads ? 1 : 0;
/* Localization: index of resolved_language within lang_menu_options
* (match by code; games with no [runtime].languages list leave
* lang_menu_options empty and this stays 0 / unused). */
ls.language_index = 0;
for (size_t li = 0; li < lang_menu_options.size(); li++) {
if (lang_menu_options[li].code == resolved_language) {
ls.language_index = (int)li;
break;
}
}
{
std::string bios_str = seed.bios_path.string();
std::snprintf(ls.bios_path, sizeof(ls.bios_path), "%s", bios_str.c_str());
}
/* Memory-card slots: point each slot at the REAL card the runtime
* will use — an explicit settings.toml path if set, else the default
* <memcard_dir>/cardN.mcd the runtime derives — so the launcher's
* block grids reflect the actual on-disk saves (memcard_inspect). */
{
std::string mc1 = seed.has_memcard1_path ? seed.memcard1_path.string()
: (memcard_dir / "card1.mcd").string();
std::string mc2 = seed.has_memcard2_path ? seed.memcard2_path.string()
: (memcard_dir / "card2.mcd").string();
std::snprintf(ls.memcard_path[0], sizeof(ls.memcard_path[0]), "%s", mc1.c_str());
std::snprintf(ls.memcard_path[1], sizeof(ls.memcard_path[1]), "%s", mc2.c_str());
}
ls.memcard_enabled[0] = seed.memcard1_enabled ? 1 : 0;
ls.memcard_enabled[1] = seed.memcard2_enabled ? 1 : 0;
/* Region badge: game.toml [game] region wins verbatim; otherwise derive
* from the game_id serial prefix (SCUS/SLUS/LSP -> USA, SCES/SLES ->
* Europe, SCPS/SLPS/SLPM -> Japan). Empty/unknown -> no badge (gi.region
* left null; the launcher model treats that as "" and hides the row). */
const std::string rui_region =
!game_region.empty() ? game_region : region_label_from_serial(game_id);
/* Localization: one C-string array pointing at lang_menu_options'
* own storage (that vector outlives this call, it's a main()-scope
* local), so no separate copy is needed. Empty when the game declares
* no [runtime].languages -> Localization stays hidden (num_languages=0). */
std::vector<const char*> rui_lang_labels;
rui_lang_labels.reserve(lang_menu_options.size());
for (const auto& lo : lang_menu_options) rui_lang_labels.push_back(lo.label.c_str());
RecompLauncherCGameInfo gi{};
static const char* const kPsxRendererLabels[] = {
"Software",
"OpenGL (Recommended)",
"Vulkan"
};
/* System identity + full PS1 settings-surface capability set (theme,
* platform label, rom_noun, pad-mode support, aspect mask base, and
* all has_* deep-settings flags) — one profile call keeps them from
* drifting apart across PSX titles. Per-game specifics below override
* only what the profile can't know. */
launcher_profile_apply("psx", &gi);
gi.name = game_name.empty() ? nullptr : game_name.c_str();
gi.region = rui_region.empty() ? nullptr : rui_region.c_str();
gi.keybinds_path = s_rui_keybinds_path.c_str();
gi.has_expected_crc = 0; /* the launcher's simple file-CRC doesn't fit
PSX multi-track discs — skip verification */
gi.num_known_sha256 = 0;
gi.widescreen_supported = ws_offered ? 1 : 0;
gi.num_players = game_players;
gi.msu1_supported = 0;
gi.sram_path = nullptr; /* PSX uses memory cards, not SRAM -> hide SAVES */
/* Pad-mode + aspect capabilities sourced from game.toml
* [controller]/[widescreen] via GameConfig. PSX always has pad modes. */
gi.pad_mode_selectable = ctrl_lock_mode ? 0 : 1;
gi.allow_hybrid = ctrl_allow_hybrid ? 1 : 0;
gi.locked_pad_mode = ctrl_locked_mode[0]; /* game-declared default_mode */
gi.lock_device = ctrl_lock_device ? 1 : 0;
gi.aspect_mask = 0x1 | (ws_offered ? 0x2 : 0) | (ws_ultrawide_offered ? 0x4 : 0);
gi.renderer_labels = kPsxRendererLabels;
gi.num_renderers = vulkan_offered ? 3 : 2;
/* Localization menu: shown only when the game declares languages. */
if (!rui_lang_labels.empty()) {
gi.language_labels = rui_lang_labels.data();
gi.num_languages = (int)rui_lang_labels.size();
}
/* Real disc-verify + memcard-inspect (identify_disc / memcard_summary_path
* via the ae_* callbacks). The launcher re-runs these whenever the
* user changes the disc or a memory card, so the verdict + block
* grids reflect the actual images.
* The expected serial/CRC ride on file-scope statics (the C-ABI
* callback can't capture these locals). */
g_lnch_expected_serial = game_id;
g_lnch_expected_crc = game_disc_crc;
g_lnch_has_crc = game_has_disc_crc;
g_lnch_argv0 = argv[0];
gi.disc_verify = ae_disc_verify;
gi.memcard_inspect = ae_memcard_inspect;
gi.bios_verify = ae_bios_verify;
/* MotK ships tools/prepare_disc.py (2448→2352). Offer it in the
* first-run wizard so players need not run the script by hand. */
{
const auto root = find_upward(exe_dir_from_argv(argv[0]),
"tools/prepare_disc.py");
if (!root.empty()) {
gi.prepare_disc = ae_prepare_disc;
gi.prepare_disc_label = "Convert 2448-byte dump…";
gi.prepare_disc_note =
"If you have a 2448-byte/sector MotK ISO dump, convert it "
"to a MODE2/2352 .bin/.cue under motk/ (same as "
"tools/prepare_disc.py).";
}
}
/* Quiet first-run detection: missing/unreadable BIOS or disc opens
* the setup wizard inside recomp-ui (cross-platform file pickers). */
{
bool bios_ok = false;
RecompLauncherCBiosVerify bv{};
if (ls.bios_path[0]) {
if (ae_bios_verify(ls.bios_path, &bv) && bv.ok) {
bios_ok = true;
/* Keep an absolute path in the model / settings writeback. */
std::filesystem::path resolved =
resolve_bios_path(ls.bios_path, argv[0]);
std::error_code ec;
if (!resolved.empty() &&
std::filesystem::exists(resolved, ec)) {
auto abs = std::filesystem::weakly_canonical(resolved, ec);
if (ec) abs = std::filesystem::absolute(resolved, ec);
std::snprintf(ls.bios_path, sizeof(ls.bios_path), "%s",
abs.string().c_str());
}
} else {
ls.bios_path[0] = '\0';
}
}
if (!bios_ok) {
if (ae_bios_verify("", &bv) && bv.ok) bios_ok = true;
}
bool disc_ok = false;
if (!rui_initial_disc.empty()) {
std::error_code ec;
if (std::filesystem::exists(rui_initial_disc, ec)) {
const DiscValidation dv =
validate_disc_image(rui_initial_disc, game_id);
disc_ok = dv.opened && dv.has_header;
}
if (!disc_ok) rui_initial_disc.clear();
}
gi.needs_setup = (!bios_ok || !disc_ok) ? 1 : 0;
}
#if defined(PSX_HAS_GAME_CODEGEN)
/* Local codegen: missing generated/ or MOTK_FORCE_SETUP opens the
* generate & rebuild wizard (may also set prepare_required). */
psx_game_codegen_setup_apply(&gi);
#endif
launcher_boot_timing_mark("host:setup_checks_done");
#if defined(PSX_HAS_RECOMP_NET) && defined(PSX_HAS_LOBBY_CLIENT)
g_lnch_netplay_game_name = game_name.empty() ? "PSX" : game_name;
g_lnch_game_players = game_players;
g_offline_pad_count = game_players > 0 ? game_players : 1;
if (g_offline_pad_count > PSX_MAX_PLAYERS)
g_offline_pad_count = PSX_MAX_PLAYERS;
psx_lobby_set_max_slots(game_players);
gi.netplay_supported =
(game_players >= 2 && game_players <= PSX_MAX_PLAYERS) ? 1 : 0;
gi.netplay = &g_lnch_netplay_callbacks;
#endif
char rui_out_disc[1024] = {0};
launcher_boot_timing_mark("host:before_run_window");
int rui_rc = recomp_launcher_run_window(
rui_title.c_str(), &ls, &gi, assets_dir_str.c_str(),
rui_initial_disc.c_str(), rui_out_disc, sizeof(rui_out_disc));
launcher_boot_timing_mark("host:after_run_window");
lr = rui_rc;
if (lr == 0) {
seed.netplay_player_name = ls.netplay_player_name;
seed.has_netplay_player_name = true;
if (rui_out_disc[0]) {
seed.disc_path = rui_out_disc;
seed.has_disc_path = true;
}
seed.fullscreen = ls.fullscreen; seed.has_fullscreen = true;
seed.skip_launcher = ls.skip_launcher != 0; seed.has_skip_launcher = true;
/* aspect_index round-trips 0/1/2 -> 4:3 / 16:9 / 21:9, superseding the
* legacy ls.widescreen bool (still set above for older callers). */
switch (ls.aspect_index) {
case 2: seed.aspect_num = 21; seed.aspect_den = 9; break;
case 1: seed.aspect_num = 16; seed.aspect_den = 9; break;
default: seed.aspect_num = 4; seed.aspect_den = 3; break;
}
seed.has_aspect_ratio = true;
/* has_texture_filter is on (PSX profile) so the launcher edits
* ls.texture_filter directly (0=nearest,1=bilinear); ls.linear_filter
* is the legacy fallback field for consoles without the cap and is
* left unused here. */
seed.texture_filter = ls.texture_filter ? 1 : 0; seed.has_texture_filter = true;
{
const int n = std::min(PSX_MAX_PLAYERS, RECOMP_LAUNCHER_MAX_PLAYERS);
const int un = std::min(n, PSXRecompV4::UserSettings::kMaxControllerPlayers);
for (int i = 0; i < n; ++i) {
if (ls.player_src[i] == 1) {
player_device[i] = "keyboard";
/* Keyboard is always a digital pad at runtime. */
player_mode[i] = PSXRecompV4::PAD_MODE_DIGITAL;
} else if (ls.player_src[i] == 0) {
player_device[i] = "none";
player_mode[i] = ls.pad_mode[i];
} else if (ls.player_gamepad_guid[i][0]) {
player_device[i] = ls.player_gamepad_guid[i];
player_mode[i] = ls.pad_mode[i];
} else if (player_device[i] == "none" ||
player_device[i] == "keyboard") {
player_device[i] = "gamepad";
player_mode[i] = ls.pad_mode[i];
} else {
player_mode[i] = ls.pad_mode[i];
}
player_deadzone[i] = ls.deadzone[i] * 32767 / 100;
if (i < un) {
seed.p_device[i] = player_device[i];
seed.has_p_device[i] = true;
seed.p_mode[i] = player_mode[i];
seed.has_p_mode[i] = true;
seed.p_deadzone[i] = player_deadzone[i];
seed.has_p_deadzone[i] = true;
}
}
seed.deadzone = player_deadzone[0];
seed.has_deadzone = true;
}
/* ---- deeper PSX-style settings write-back (mirrors the seed
* fields above), all gated on by the "psx" launcher_profile caps. */
seed.window_width = ls.window_width; seed.has_window_width = true;
seed.renderer = ls.renderer; seed.has_renderer = true;
seed.supersampling = ls.supersampling; seed.has_supersampling = true;
seed.antialiasing = ls.antialiasing != 0; seed.has_antialiasing = true;
seed.screen_kind = ls.screen_kind; seed.has_screen_kind = true;
seed.frame_interpolation = ls.frame_interp != 0; seed.has_frame_interpolation = true;
seed.frame_interpolation_fps = ls.frame_interp_fps; seed.has_frame_interpolation_fps = true;
seed.spu_hq = ls.spu_hq != 0; seed.has_spu_hq = true;
seed.auto_skip_fmv = ls.auto_skip_fmv != 0; seed.has_auto_skip_fmv = true;
seed.turbo_loads = ls.turbo_loads != 0; seed.has_turbo_loads = true;
if (ls.bios_path[0]) {
std::filesystem::path resolved =
resolve_bios_path(ls.bios_path, argv[0]);
std::error_code ec;
if (!resolved.empty() && std::filesystem::exists(resolved, ec)) {
seed.bios_path =
std::filesystem::weakly_canonical(resolved, ec);
if (ec)
seed.bios_path = std::filesystem::absolute(resolved, ec);
} else {
seed.bios_path = ls.bios_path;
}
seed.has_bios_path = true;
} else {
seed.bios_path.clear();
seed.has_bios_path = false;
}
/* Memory-card slots: enable flags + any Browse/New paths. */
seed.memcard1_enabled = ls.memcard_enabled[0] != 0; seed.has_memcard1_enabled = true;
seed.memcard2_enabled = ls.memcard_enabled[1] != 0; seed.has_memcard2_enabled = true;
if (ls.memcard_path[0][0]) { seed.memcard1_path = ls.memcard_path[0]; seed.has_memcard1_path = true; }
if (ls.memcard_path[1][0]) { seed.memcard2_path = ls.memcard_path[1]; seed.has_memcard2_path = true; }
/* Localization: persist the chosen language code (only meaningful
* when the game declared a menu; otherwise leave seed.language
* untouched. */
if (!lang_menu_options.empty() && ls.language_index >= 0 &&
ls.language_index < (int)lang_menu_options.size()) {
seed.language = lang_menu_options[ls.language_index].code;
seed.has_language = true;
}
#if defined(PSX_HAS_LOBBY_CLIENT)
if (ls.netplay_launch.enabled) {
const PsxLobbyMatchCaps* caps = psx_lobby_match_caps();
if (caps && caps->valid) {
seed.aspect_num = caps->aspect_num ? caps->aspect_num : seed.aspect_num;
seed.aspect_den = caps->aspect_den ? caps->aspect_den : seed.aspect_den;
seed.has_aspect_ratio = true;
seed.turbo_loads = caps->turbo_loads != 0;
seed.has_turbo_loads = true;
seed.auto_skip_fmv = caps->auto_skip_fmv != 0;
seed.has_auto_skip_fmv = true;
if (caps->language[0]) {
seed.language = caps->language;
seed.has_language = true;
}
}
}
#endif
}
if (lr == 1) {
std::fprintf(stdout, "psxrecomp: launcher closed; exiting.\n");
if (overlay_init_thread.joinable())
overlay_init_thread.join();
SDL_Quit();
return 0;
}
#if defined(PSX_HAS_GAME_CODEGEN)
if (lr == RECOMP_LAUNCHER_RESULT_RELAUNCH) {
const char* disc_for_relaunch =
rui_out_disc[0] ? rui_out_disc
: (rui_initial_disc.empty()
? ""
: rui_initial_disc.c_str());
std::fprintf(stdout,
"psxrecomp: relaunch after generate/rebuild\n");
if (overlay_init_thread.joinable())
overlay_init_thread.join();
psx_game_codegen_relaunch_or_exit(disc_for_relaunch);
/* Does not return on success. */
SDL_Quit();
return 1;
}
#endif
if (lr == 0) {
if (ls.netplay_launch.enabled) {
net_cfg.enabled = 1;
net_cfg.local_slot = ls.netplay_launch.local_slot;
net_cfg.input_player = ls.netplay_launch.input_player;
net_cfg.session_id = ls.netplay_launch.session_id;
net_cfg.input_delay = ls.netplay_launch.input_delay;
net_cfg.input_prediction = ls.netplay_launch.input_prediction;
net_cfg.force_input_relay = ls.netplay_launch.force_input_relay ? 1 : 0;
net_cfg.force_turn = ls.netplay_launch.force_turn ? 1 : 0;
net_cfg.rollback = ls.netplay_launch.rollback ? 1 : 0;
net_cfg.player_count = ls.netplay_launch.player_count;
net_cfg.slot_count = ae_np_session_slot_count(
ls.netplay_launch.player_count, ls.netplay_launch.max_slots,
ls.netplay_launch.local_slot, game_players);
if (net_cfg.player_count <= 0)
net_cfg.player_count = net_cfg.slot_count;
std::snprintf(net_cfg.bind_hostport, sizeof(net_cfg.bind_hostport), "%s",
ls.netplay_launch.bind_hostport);
std::snprintf(net_cfg.peer_hostport, sizeof(net_cfg.peer_hostport), "%s",
ls.netplay_launch.peer_hostport);
g_netplay_from_lobby = 1;
std::fprintf(stdout,
"psxrecomp: launcher netplay slot=%d slots=%d bind=%s peer=%s session=%u\n",
net_cfg.local_slot, net_cfg.slot_count, net_cfg.bind_hostport,
net_cfg.peer_hostport, (unsigned)net_cfg.session_id);
std::fflush(stdout);
} else {
g_netplay_from_lobby = 0;
}
g_video_renderer = seed.renderer;
g_video_scale = seed.supersampling;
g_video_aa = seed.antialiasing;
g_video_texfilter = seed.texture_filter;
g_video_screen = seed.screen_kind;
g_auto_skip_fmv = seed.auto_skip_fmv ? 1 : 0;
g_turbo_loads_enabled = seed.turbo_loads ? 1 : 0;
fast_boot = seed.fast_boot;
bios_hle = seed.bios_hle;
g_fullscreen = seed.fullscreen;
g_frame_interpolation = seed.frame_interpolation ? 1 : 0;
g_frame_interpolation_fps = seed.frame_interpolation_fps;
g_video_aspect_num = seed.aspect_num;
g_video_aspect_den = seed.aspect_den;
g_audio_spu_hq = seed.spu_hq;
skip_launcher_setting = seed.skip_launcher;
if (seed.has_bios_path) {
settings_bios_storage = seed.bios_path.string();
bios_path = settings_bios_storage.c_str();
bios_explicit = true;
write_cached_path(argv[0], "bios.cfg", seed.bios_path);
} else if (!bios_from_cli) {
/* Cleared to bundled OpenBIOS — drop any cached retail pick. */
bios_explicit = false;
std::error_code ec;
std::filesystem::remove(sidecar_cfg_path(argv[0], "bios.cfg"), ec);
}
if (seed.has_disc_path) {
seed.disc_path = normalize_disc_path_for_launch(seed.disc_path);
resolved_disc = seed.disc_path;
write_cached_path(argv[0], "disc.cfg", resolved_disc);
}
memcard1_enabled = seed.memcard1_enabled;
memcard2_enabled = seed.memcard2_enabled;
if (seed.has_memcard1_path) memcard1_path = seed.memcard1_path;
if (seed.has_memcard2_path) memcard2_path = seed.memcard2_path;
if (seed.has_language) resolved_language = seed.language;
{
const int n = std::min(PSX_MAX_PLAYERS,
PSXRecompV4::UserSettings::kMaxControllerPlayers);
for (int i = 0; i < n; ++i) {
if (seed.has_p_device[i]) player_device[i] = seed.p_device[i];
if (seed.has_p_mode[i]) player_mode[i] = seed.p_mode[i];
if (seed.has_p_deadzone[i]) player_deadzone[i] = seed.p_deadzone[i];
}
if (seed.has_deadzone) resolved_deadzone = seed.deadzone;
}
g_video_win_w = seed.window_width;
/* Persist the user's choices next to the exe. */
PSXRecompV4::save_user_settings(
exe_dir_from_argv(argv[0]) / "settings.toml", seed);
}
}
}
#endif
if (overlay_init_thread.joinable()) {
overlay_init_thread.join();
if (overlay_init_exc) {
try {
std::rethrow_exception(overlay_init_exc);
} catch (const std::exception& ex) {
std::fprintf(stderr, "psxrecomp: overlay cache init failed: %s\n",
ex.what());
return 1;
}
}
}
/* Re-apply the resolved language to the translation layer. text_xlate_init
* (at config load) only saw the game.toml default; this folds in the
* settings.toml override and the launcher's choice. No-op when unchanged. */
text_xlate_set_language(resolved_language.c_str());
/* CLI overrides win over config — applied last, before backend/port init.
* Enables a soak fleet: several instances on distinct ports + renderers,
* including BIOS instances that have no [game]-block config. */
if (cli_debug_port >= 0) debug_port = (uint16_t)cli_debug_port;
if (cli_renderer >= 0) g_video_renderer = cli_renderer;
if (cli_window_title) window_title = cli_window_title;
if (cli_memcard_dir) {
memcard_dir = std::filesystem::path(cli_memcard_dir);
if (memcard_dir.is_relative())
memcard_dir = exe_dir_from_argv(argv[0]) / memcard_dir;
memcard_dir = memcard_dir.lexically_normal();
memcard1_path.clear();
memcard2_path.clear();
}
std::filesystem::path resolved_bios =
resolve_bios_for_runtime(bios_path, argv[0], bios_explicit);
if (resolved_bios.empty()) {
std::fprintf(stderr, "psxrecomp: no BIOS selected; exiting.\n");
return 1;
}
if (game_config_path || disc_override_path || !resolved_disc.empty()) {
resolved_disc = resolve_disc_for_runtime(resolved_disc, disc_override_path, game_id, argv[0]);
if (game_config_path && resolved_disc.empty()) {
std::fprintf(stderr, "psxrecomp: no disc image selected; exiting.\n");
return 1;
}
}
/* memcard_dir was resolved to its default before the launcher (above). */
std::string bios_path_str = resolved_bios.string();
std::string memcard_dir_str = memcard_dir.string();
std::string disc_path_str = resolved_disc.string();
session_reboot:
/* Rematch after lobby soft-return re-enters here with updated net_cfg. */
static int s_emu_session = 0;
const bool rematch_session = (++s_emu_session > 1);
std::fprintf(stdout, "psxrecomp runtime: loading BIOS from %s%s\n",
bios_path_str.c_str(),
rematch_session ? " (rematch)" : "");
/* Soft-exit longjmps out of device service with a leftover guest clock;
* rematch must start from cycle 0 or vblanks never fire again. */
psx_cycles_reset_for_boot();
starvation_ring_reset();
present_session_reset();
{
extern uint64_t s_frame_count;
extern uint32_t g_debug_current_func_addr;
extern uint32_t g_debug_last_store_pc;
s_frame_count = 0;
g_debug_current_func_addr = 0;
g_debug_last_store_pc = 0;
}
memory_init(bios_path_str.c_str());
#ifndef PSX_HAVE_VULKAN
/* Vulkan was not compiled in (PSX_ENABLE_VULKAN=OFF or no SDK found).
* Refuse a vulkan request from ANY source (config / CLI / launcher seed)
* and fall back to OpenGL, so the window is never created with
* SDL_WINDOW_VULKAN against an inert backend stub. */
if (g_video_renderer == 2) {
std::fprintf(stdout, "psxrecomp: Vulkan renderer is not available in this build "
"(PSX_ENABLE_VULKAN=OFF); using OpenGL instead.\n");
g_video_renderer = 1;
}
#endif
/* Netplay: CPU VRAM is digest/snap authority. Prefer dual-raster OpenGL
* (SW@1× + GL@settings SSAA FBO present, never glReadPixels). Vulkan
* present not yet cpu-auth — fall back to a software window. */
s_netplay_gl_present = 0;
s_netplay_sim_native_scale = 0;
gl_renderer_set_cpu_auth_dual(0);
if (net_cfg.enabled) {
s_netplay_sim_native_scale = 1;
if (g_video_renderer == 1) {
s_netplay_gl_present = 1;
g_gl_fbo_present = 1;
gl_renderer_set_cpu_auth_dual(1);
gr_set_backend(GR_BACKEND_OPENGL);
std::fprintf(stdout,
"psxrecomp: netplay — dual-raster "
"(SW@1x CPU-auth + OpenGL present quality; no FBO readback)\n");
std::fprintf(stdout,
"psxrecomp: renderer backend requested: opengl "
"(netplay dual-raster)\n");
} else if (g_video_renderer == 2) {
std::fprintf(stdout,
"psxrecomp: netplay — Vulkan present not yet CPU-auth; "
"using software window (was vulkan)\n");
g_video_renderer = 0;
gr_set_backend(GR_BACKEND_SOFTWARE);
std::fprintf(stdout,
"psxrecomp: renderer backend requested: software "
"(netplay sim)\n");
} else {
gr_set_backend(GR_BACKEND_SOFTWARE);
std::fprintf(stdout,
"psxrecomp: renderer backend requested: software "
"(netplay sim)\n");
}
} else {
/* Select the renderer backend BEFORE gpu_init() (which runs gr_init ->
* the backend's init on the VRAM buffer). Software is the default and
* the fallback; an unavailable OpenGL backend reverts to software. */
gr_set_backend(g_video_renderer == 2 ? GR_BACKEND_VULKAN :
g_video_renderer == 1 ? GR_BACKEND_OPENGL :
GR_BACKEND_SOFTWARE);
std::fprintf(stdout, "psxrecomp: renderer backend requested: %s\n",
g_video_renderer == 2 ? "vulkan" :
g_video_renderer == 1 ? "opengl" : "software");
}
gpu_init();
/* Internal-resolution supersampling (SSAA). Must follow gpu_init.
* Dual-raster: gr_set_scale(N) arms GL hr FBO @ N× while glb_set_scale
* keeps SW at 1×. SW-only netplay: force scale 1. Offline: full SSAA. */
if (g_video_scale < 1) g_video_scale = 1;
if (g_video_scale > SW_MAX_INTERNAL_SCALE) g_video_scale = SW_MAX_INTERNAL_SCALE;
if (net_cfg.enabled && s_netplay_gl_present && gl_renderer_cpu_auth_dual()) {
gr_set_scale(g_video_scale);
if (g_video_scale > 1) {
std::fprintf(stdout,
"psxrecomp: netplay GL present supersampling %dx "
"(SW authority stays 1x)\n",
g_video_scale);
}
} else if (net_cfg.enabled || s_netplay_sim_native_scale) {
gr_set_scale(1);
if (g_video_scale > 1) {
std::fprintf(stdout,
"psxrecomp: netplay sim supersampling clamped to 1x "
"(settings %dx kept for offline)\n",
g_video_scale);
}
} else {
gr_set_scale(g_video_scale);
g_video_scale = gr_scale(); /* reflect any clamp / alloc fallback */
}
gr_set_texture_filter(g_video_texfilter);
/* Display aspect. Identity at the default 4:3. The present letterbox uses
* this aspect; native-wide fills it with a genuinely wider frame (no
* stretch), squash mode stretches the 4:3 frame into it. */
gl_renderer_set_display_aspect(g_video_aspect_num, g_video_aspect_den);
if (g_video_aspect_num * 3 != g_video_aspect_den * 4) {
/* Hold widescreen off through the BIOS boot (authentic 4:3 logos);
* the per-frame present path engages it at game entry. */
g_ws_engaged = false;
std::fprintf(stdout,
"psxrecomp: widescreen %d:%d (%s%s%s; engages at game entry)\n",
g_video_aspect_num, g_video_aspect_den,
g_ws_native_wide ? "native-wide, present 1:1"
: "GTE X-squash + stretched present",
g_ws_anchor_addr ? " + sprite tags" : "",
g_ws_hud_sprt ? " + HUD squash" : "");
}
/* Present-time screen-colour model (verified-enhancement LUT). Default raw
* is byte-identical; PSX_SCREEN env overrides this at scanout. */
gpu_set_screen_kind(g_video_screen);
if (g_video_scale > 1 || g_video_texfilter)
std::fprintf(stdout,
"psxrecomp: supersampling %dx (antialiasing %s, texture filter %s)\n",
g_video_scale, g_video_aa ? "on" : "off",
g_video_texfilter ? "bilinear" : "nearest");
if (g_video_screen != 0)
std::fprintf(stdout, "psxrecomp: screen-colour model %s\n",
g_video_screen == 1 ? "crt" : g_video_screen == 2 ? "composite"
: "trinitron");
dma_init();
mdec_init();
timers_init();
interrupts_init();
sio_init();
psx_event_step_conservative_env_init();
/* Seed per-player device routing from the resolved [controller] config.
* SDL controller handles are opened later (after SDL_Init); here we only
* set the PSX-visible connection + pad type so the BIOS sees the right
* ports during early boot. */
for (int s = 0; s < PSX_MAX_PLAYERS; ++s) {
set_player_device(g_players[s], player_device[s], player_mode[s]);
g_players[s].deadzone = player_deadzone[s];
}
/* Multitap stays OFF through BIOS boot: SCPH-1070 on port 1 breaks shell /
* LoadExe pad bring-up for titles that expect a lone digital pad. Offline
* 3+ player builds arm it after game entry (see vblank path); netplay arms
* it from psx_netplay when slot_count >= 3. */
for (int s = 0; s < PSX_MAX_PLAYERS; s++) {
/* Dev-any-input keeps P1 connected even with no assigned controller so the
* keyboard / any plugged-in controller can drive port 1 standalone. */
const bool dev_p1 = (dev_any_input_enabled() && s == 0);
const int mode = effective_player_mode_for_sio(g_players[s], s);
sio_set_pad_connected(s, (g_players[s].kind != 0 || dev_p1) ? 1 : 0);
sio_set_pad_analog(s, pad_mode_boot_analog(mode), 0x80, 0x80, 0x80, 0x80);
sio_set_pad_config_capable(s, mode != PSXRecompV4::PAD_MODE_DIGITAL);
}
/* SPU float-shadow gate must be set before spu_init() (which runs
* spu_shadow_reset()). Default OFF; PSX_AUDIO_SHADOW env overrides. */
spu_shadow_set_enabled(g_audio_spu_hq ? 1 : 0);
if (g_audio_spu_hq)
std::fprintf(stdout, "psxrecomp: SPU float-shadow enabled (verified-enhancement)\n");
spu_init();
cdrom_init(disc_path_str.empty() ? NULL : disc_path_str.c_str());
for (const auto& route : warm_cd_routes) {
cdrom_register_warm_route(route.arm_lba, route.lbas.data(),
(int)route.lbas.size(),
route.instant_max_per_frame);
std::fprintf(stdout,
"psxrecomp: warm CD route armed at LBA %d (%zu entries, "
"%d sectors/frame)\n",
route.arm_lba, route.lbas.size(),
route.instant_max_per_frame);
}
if (!disc_path_str.empty()) {
/* GetID must report the inserted disc's license region (the BIOS CD
* driver revalidates it mid-game). Derive it from the disc's boot
* serial via the same disc_identity module the launch check uses. */
const auto ident = PSXRecompV4::identify_disc(
disc_path_str, /*expected_serial*/"", /*expected_crc*/0,
/*has_expected_crc*/false, /*compute_crc*/false);
if (ident.region == "PAL") cdrom_set_disc_scex("SCEE");
else if (ident.region == "NTSC-J") cdrom_set_disc_scex("SCEI");
else if (ident.region == "NTSC-U") cdrom_set_disc_scex("SCEA");
if (!ident.region.empty())
std::fprintf(stdout, "psxrecomp: disc region %s (serial %s)\n",
ident.region.c_str(), ident.detected_serial.c_str());
}
/* Arm the text-image guard now that both possible sources are resolved:
* the local EXE file (dev checkouts) and the disc image (every install). */
if (game_config_path)
arm_text_image_guard(text_guard_exe_path, text_guard_load_addr,
disc_path_str);
{
int divisor = 1; /* default: authentic 1x timing */
if (disc_speed == "instant") divisor = 0;
else if (disc_speed == "4x") divisor = 4;
else if (disc_speed == "2x") divisor = 2;
/* Store for post-BIOS application; boot always runs at 1x so the
* BIOS disc-init sequence sees correct timing. */
cdrom_set_game_speed(divisor);
if (instant_rate > 0) cdrom_set_instant_rate(instant_rate);
if (divisor != 1)
std::fprintf(stdout, "psxrecomp: disc_speed=%s (applied post-BIOS, "
"instant budget %d/frame)\n",
disc_speed.c_str(), cdrom_get_instant_rate());
}
{
std::string mc1 = memcard1_path.string();
std::string mc2 = memcard2_path.string();
const MemcardSlotConfig slots[2] = {
{ mc1.empty() ? nullptr : mc1.c_str(), memcard1_enabled ? 1 : 0 },
{ mc2.empty() ? nullptr : mc2.c_str(), memcard2_enabled ? 1 : 0 },
};
memcard_init_slots(memcard_dir_str.c_str(), slots);
}
if (!rematch_session) {
std::atexit(memcard_flush_all);
/* Persist the game's native OPTION settings on any exit path (belt-and-
* suspenders; save-on-change already persists them live). No-op if not yet
* armed, so it can't overwrite the saved file with boot defaults. */
std::atexit(game_options_save_now);
#ifndef PSX_NO_DEBUG_TOOLS
debug_server_init(debug_port);
#else
(void)debug_port;
#endif
#ifdef PSX_COSIM
cosim_init(); /* first-divergence oracle server */
#endif
/* Heartbeat always on — see freeze_heartbeat.c rationale. */
freeze_heartbeat_start("psx-runtime");
} else {
#ifndef PSX_NO_DEBUG_TOOLS
(void)debug_port;
#endif
}
/* Register game entry_pc for post-BIOS disc speed switch. Fires once when
* the BIOS hands control to the game EXE — not on the BIOS shell. */
if (game_entry_pc != 0)
fntrace_set_game_range(game_entry_pc, 0);
if (g_headless) {
std::fprintf(stdout, "psxrecomp: headless frontend enabled\n");
} else {
/* ---- SDL init ---- */
/* Scale quality governs SDL's logical-size -> window scaling. Linear when
* antialiasing is on so the (super)sampled frame stays smooth when the
* window is resized; nearest preserves crisp pixels otherwise. */
SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, g_video_aa ? "1" : "0");
SDL_SetHint(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, "1");
/* Prefer SDL's own HIDAPI driver over platform-native so Steam's virtual
* Xbox controller (injected by Steam Input / Remote Play) is enumerated
* as a game controller rather than a raw HID device. */
SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI, "1");
SDL_SetHint(SDL_HINT_JOYSTICK_RAWINPUT, "0");
/* ...but HIDAPI's Xbox sub-driver is OFF by default on Windows (Xbox pads are
* normally RAWINPUT/XInput there). With RAWINPUT disabled above, a PHYSICAL
* Xbox One/Series controller would be claimed by nobody -> not a GameController
* -> zero input (PS5 DualSense works regardless: its HIDAPI driver is on by
* default). Enable the HIDAPI Xbox driver so HIDAPI handles Xbox pads too. */
SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_XBOX, "1");
if (!SDL_WasInit(SDL_INIT_VIDEO | SDL_INIT_GAMECONTROLLER)) {
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_GAMECONTROLLER) != 0) {
std::fprintf(stderr, "SDL_Init failed: %s\n", SDL_GetError());
return 1;
}
}
load_input_config(argv[0]);
/* The launcher / settings.toml / game.toml deadzone (when set) is the
* user-facing authority; apply it over the input.ini value here, after
* load_input_config has read input.ini. */
if (resolved_deadzone >= 0)
controller_deadzone = std::max(0, std::min(32767, resolved_deadzone));
else
controller_deadzone = kDefaultDeadzoneRaw;
for (int s = 0; s < PSX_MAX_PLAYERS; ++s) {
if (player_deadzone[s] >= 0)
g_players[s].deadzone = std::max(0, std::min(32767, player_deadzone[s]));
else
g_players[s].deadzone = controller_deadzone;
}
controller_deadzone = g_players[0].deadzone;
refresh_player_devices(); /* open SDL handles to match the player config */
#ifndef PSX_SDL_NO_AUDIO
audio_trace_init();
if (SDL_InitSubSystem(SDL_INIT_AUDIO) == 0) {
PsxSdlAudioSpec want = {};
PsxSdlAudioSpec have = {};
want.freq = 44100;
want.format = AUDIO_S16SYS;
want.channels = 2;
want.samples = 1024;
const bool legacy = audio_legacy_mode();
want.allow_frequency_change = legacy ? 0 : 1;
if (!legacy)
want.callback = sdl_drc_callback; /* pull model: bridge resamples + DRC */
sdl_audio_device = psx_sdl_audio_open(&want, &have);
if (sdl_audio_device) {
if (!legacy) {
rab_config cfg; rab_config_defaults(&cfg);
cfg.channels = 2;
cfg.source_rate = 44100.0; /* SPU render rate */
cfg.host_rate = (double)have.freq; /* actual device rate */
if (rab_init(&s_drc, &cfg) == 0) s_drc_ready = true;
}
g_audio_host_rate = have.freq;
audio_trace_set_tap_rate(AUDIO_TAP_HOST, (uint32_t)have.freq);
(void)psx_sdl_audio_resume(sdl_audio_device);
}
}
#endif
Uint32 win_flags = SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE;
if (g_video_renderer == 1) {
configure_core_gl_context_attributes();
win_flags |= SDL_WINDOW_OPENGL;
}
if (g_video_renderer == 2) win_flags |= SDL_WINDOW_VULKAN;
/* Fullscreen on launch (launcher's tri-state Fullscreen control): 1 =
* borderless desktop fullscreen (keeps the desktop resolution, letterboxes
* the image), 2 = exclusive fullscreen (real display-mode change), 0 =
* windowed. Matches the in-game Alt+Enter / Cmd+Ctrl+F hotkey behaviour. */
win_flags |= psx_fullscreen_flag_for_mode(g_fullscreen);
/* Open at the user-chosen window size (default 1280 wide) instead of the
* old hardcoded 640x480, so the game doesn't boot into a tiny window. The
* height follows the configured display aspect (4:3 native, wider for the
* widescreen hack); the present path letterboxes to the same aspect, so
* the image scales to fill the larger window with no further distortion. */
int game_w = g_video_win_w, game_h = 0;
clamp_window_aspect(&game_w, &game_h, g_video_aspect_num, g_video_aspect_den);
sdl_window = SDL_CreateWindow(
window_title.c_str(),
SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
game_w, game_h,
win_flags
);
if (!sdl_window) {
std::fprintf(stderr, "SDL_CreateWindow failed: %s\n", SDL_GetError());
return 1;
}
/* Sync-to-host-refresh: with SDL PRESENTVSYNC on, a fixed 59.94 Hz wall-clock
* pacer fights a 60.00 Hz panel — rendered frames slip onto an uneven vblank
* count (2/3/1 beat) that reads as moving-object judder. If the panel is
* within ~2% of 60 Hz, nudge the pacer to the exact panel period so the pacer
* and vsync agree and 30fps content pads to a steady 2 refreshes each.
* Non-~60Hz panels keep the PSX rate (vsync then governs; wrong-speed sim is
* worse than a benign slow beat). */
{
SDL_DisplayMode dm;
int disp_idx = SDL_GetWindowDisplayIndex(sdl_window);
if (disp_idx >= 0 && SDL_GetCurrentDisplayMode(disp_idx, &dm) == 0 && dm.refresh_rate > 0) {
double host_hz = (double)dm.refresh_rate;
g_host_refresh_hz = host_hz;
if (host_hz >= 58.8 && host_hz <= 61.2) {
g_frame_period_ms = 1000.0 / host_hz;
std::printf("psxrecomp: sync-to-host-refresh: pacing to %d Hz panel "
"(%.4f ms/frame)\n", dm.refresh_rate, g_frame_period_ms);
} else {
std::printf("psxrecomp: host panel %d Hz not ~60 Hz; keeping PSX "
"59.94 Hz pacing\n", dm.refresh_rate);
}
}
}
/* OpenGL backend: create the GL context now. On failure, relabel the
* facade back to software (rasterization already runs through software in
* this phase) and fall through to the SDL_Renderer present path below. */
if (g_video_renderer == 1) {
gl_renderer_set_swap_interval(g_video_vsync); /* applied at context init */
g_gl_active = (gl_renderer_init_context(sdl_window) != 0);
if (!g_gl_active) {
gr_set_backend(GR_BACKEND_SOFTWARE);
gl_renderer_set_cpu_auth_dual(0);
g_gl_fbo_present = 0;
s_netplay_gl_present = 0;
if (net_cfg.enabled) {
gr_set_scale(1);
s_netplay_sim_native_scale = 1;
}
} else if (net_cfg.enabled || s_netplay_gl_present) {
/* Dual-raster: FBO present at settings SSAA; SW@1× authority.
* Scale was applied via s_req_scale before init_gpu_raster. */
gl_renderer_set_cpu_auth_dual(1);
g_gl_fbo_present = 1;
s_netplay_gl_present = 1;
s_netplay_sim_native_scale = 1;
}
/* The GL backend establishes its real internal scale HERE (raster init),
* which is AFTER the earlier offline `g_video_scale = gr_scale()` sync.
* Re-sync offline so staging matches. Netplay keeps g_video_scale as
* the settings preference (equals gr_scale() under dual-raster). */
if (!netplay_cpu_auth_gpu())
g_video_scale = gr_scale();
gl_renderer_set_interpolation(g_frame_interpolation, g_host_refresh_hz,
(double)g_frame_interpolation_fps,
/*blend_mode*/ 0);
}
/* Vulkan backend: create the instance/device/swapchain on the
* SDL_WINDOW_VULKAN window. On failure, fall back to software (vkb_init
* already initialized the software renderer on the shared VRAM array). */
if (g_video_renderer == 2) {
vk_renderer_set_present_mode(g_video_vsync);
g_vk_active = (vk_renderer_init_context(sdl_window) != 0);
if (!g_vk_active) gr_set_backend(GR_BACKEND_SOFTWARE);
if (!netplay_cpu_auth_gpu())
g_video_scale = gr_scale();
}
latency_ring_set_backend(g_vk_active ? "vulkan" : g_gl_active ? "opengl" : "software");
latency_ring_set_present_mode(g_video_vsync);
/* Title bar shows the clean game title (set at window creation); the active
* renderer is reported via the debug server / config, not appended here. */
/* Force OpenGL renderer.
*
* History (TombaRecomp/ISSUES.md #6):
* 1. Originally SDL_RENDERER_ACCELERATED with fallback to software.
* Froze "Not Responding" after extended uptime — was thought to
* be GPU-driver-side hangs.
* 2. Switched to SDL_RENDERER_SOFTWARE only. Still froze. Software
* renderer goes through Windows GDI; the GDI path hangs the SDL
* main thread under heavy emulation load.
* 3. Bisection: NO_AUDIO+NO_RENDER ran indefinitely (~7+ min, 40k+
* frames) but the game never progressed past BIOS boot because
* it depends on the renderer being present. NO_AUDIO alone with
* software renderer froze at frame 3084 — same as full debug
* build. So audio is innocent; software renderer (GDI path) is
* the culprit.
* 4. SDL_HINT_RENDER_DRIVER=opengl + SDL_RENDERER_ACCELERATED.
* Ran indefinitely past every prior freeze point. OpenGL driver
* uses a different presentation path that doesn't hit the GDI
* hang. This is now the default.
*
* Note: the freeze became prevalent only after the FMV-speed fix
* (commit b486c13) raised cycle throughput. Before that, the slower
* MDEC/DMA workload was below whatever GDI threshold trips the bug. */
/* The OpenGL force above is a Windows-only workaround for the GDI
* presentation hang; macOS/Linux have no GDI path, so let SDL choose its
* native backend (Metal on Apple Silicon). PRESENTVSYNC removes tearing;
* fall back progressively if a driver can't provide vsync/accel. */
if (!g_gl_active && !g_vk_active) {
#ifdef _WIN32
SDL_SetHint(SDL_HINT_RENDER_DRIVER, "opengl");
#endif
/* Vsync off (g_video_vsync==0) drops PRESENTVSYNC for lowest display
* latency; the wall-clock pacer still holds 59.94Hz (may tear). */
Uint32 rflags = SDL_RENDERER_ACCELERATED |
(g_video_vsync != 0 ? SDL_RENDERER_PRESENTVSYNC : 0u);
sdl_renderer = SDL_CreateRenderer(sdl_window, -1, rflags);
if (!sdl_renderer)
sdl_renderer = SDL_CreateRenderer(sdl_window, -1, SDL_RENDERER_ACCELERATED);
if (!sdl_renderer) {
std::fprintf(stderr, "SDL_CreateRenderer failed: %s\n", SDL_GetError());
return 1;
}
/* Present in a logical space of the configured aspect (640x480 at native
* 4:3, wider at widescreen aspects; scaled by the supersampling factor so
* the full internal resolution reaches a large/fullscreen window; SDL
* still scales and letterboxes to the real output). Identity in the
* default window when supersampling is off, so native rendering is
* unchanged. Netplay CPU-auth: always 1× (sim has no hi-res mirror). */
{
const int tex_scale = netplay_cpu_auth_gpu() ? 1 : g_video_scale;
g_logical_w = 480 * g_video_aspect_num * tex_scale / g_video_aspect_den;
SDL_RenderSetLogicalSize(sdl_renderer, g_logical_w, 480 * tex_scale);
}
}
/* Staging buffer + backing texture are sized for the internal resolution
* (640x512 native, times the supersampling factor). Netplay: 1×. */
{
const int tex_scale = netplay_cpu_auth_gpu() ? 1 : g_video_scale;
sdl_pixel_buf = (uint32_t*)std::malloc(
(size_t)640 * tex_scale * 512 * tex_scale * sizeof(uint32_t));
if (!sdl_pixel_buf) {
std::fprintf(stderr, "failed to allocate %dx staging buffer\n", tex_scale);
return 1;
}
}
if (!g_gl_active && !g_vk_active) {
const int tex_scale = netplay_cpu_auth_gpu() ? 1 : g_video_scale;
sdl_texture = SDL_CreateTexture(
sdl_renderer,
SDL_PIXELFORMAT_ARGB8888,
SDL_TEXTUREACCESS_STREAMING,
640 * tex_scale, 512 * tex_scale
);
if (!sdl_texture) {
std::fprintf(stderr, "SDL_CreateTexture failed: %s\n", SDL_GetError());
return 1;
}
SDL_SetTextureScaleMode(sdl_texture,
g_video_aa ? SDL_ScaleModeLinear : SDL_ScaleModeNearest);
}
}
/* Register vblank presentation callback. */
gpu_set_vblank_callback(sdl_vblank_present);
/* Delay-sync LAN (recomp-net). Menu/lobby UI is later work — CLI/env only.
* Must start after SDL so local pad capture has devices; before the guest
* fiber so the first vblanks already pump HELLO/START. */
if (net_cfg.enabled) {
/* Transport role and gameplay slot are independent. An empty peer
* means this process listens for the first peer, even when the lobby
* owner was reordered into gameplay slot 1 (Player 2). */
if (!net_cfg.bind_hostport[0]) {
std::fprintf(stderr,
"psxrecomp: netplay refused — empty bind "
"(bind='%s' peer='%s' session=%u)\n",
net_cfg.bind_hostport, net_cfg.peer_hostport,
(unsigned)net_cfg.session_id);
return 1;
}
/* Resolve which host PlayerInput feeds this peer's net sample.
* Auto (-1): always prefer dashboard P1 ("PLAYER N / NETPLAY") — that
* pad is published as lobby local_slot. Seat-card P2/P3… are only used
* when P1 is empty (legacy same-PC layout). Else sole assigned / P1. */
if (net_cfg.input_player < 0 || net_cfg.input_player >= PSX_MAX_PLAYERS) {
const int seat = net_cfg.local_slot;
int sole = -1, n_assigned = 0;
for (int i = 0; i < PSX_MAX_PLAYERS; ++i) {
if (g_players[i].kind == 0) continue;
++n_assigned;
sole = i;
}
if (g_players[0].kind != 0)
net_cfg.input_player = 0;
else if (seat >= 0 && seat < PSX_MAX_PLAYERS && g_players[seat].kind != 0)
net_cfg.input_player = seat;
else if (n_assigned == 1)
net_cfg.input_player = sole;
else
net_cfg.input_player = 0;
}
if (net_cfg.slot_count < 2)
net_cfg.slot_count = game_players >= 2 ? game_players : 2;
if (net_cfg.slot_count > PSX_MAX_PLAYERS)
net_cfg.slot_count = PSX_MAX_PLAYERS;
s_netplay_present_sim_watermark = 0; /* §74: sim restarts per session */
const int nrc = psx_netplay_start(&net_cfg);
if (nrc != 0) {
std::fprintf(stderr,
"psxrecomp: netplay start failed (%d) — built without recomp-net, "
"or bind/peer invalid (slot=%d bind=%s peer=%s)\n",
nrc, net_cfg.local_slot, net_cfg.bind_hostport, net_cfg.peer_hostport);
return 1;
}
std::printf("psxrecomp: netplay transport=%s slot=%d input_player=%d delay=%d "
"force_turn=%d bind=%s peer=%s session=%u\n",
psx_netplay_transport_name(),
net_cfg.local_slot, net_cfg.input_player, net_cfg.input_delay,
net_cfg.force_turn ? 1 : 0,
net_cfg.bind_hostport,
(std::strcmp(psx_netplay_transport_name(), "ice") == 0)
? "(ice)" : net_cfg.peer_hostport,
(unsigned)net_cfg.session_id);
}
/* Initialize CPU state. */
CPUState cpu;
std::memset(&cpu, 0, sizeof(cpu));
/* R3000A load-delay interlock init (Beetle: BACKED_LDWhich=0x20 = no pending
* load; ReadFudge=0 so the first load gets no fudge). Rest is correctly 0. */
cpu.ld_which_t = 0x20;
psx_icache_reset(); /* all I-cache lines cold at reset */
/* Wire memory function pointers. Guest data loads now route their CPU cycle
* cost through the faithful load-delay interlock (psx_cyc_load_* in memory.c),
* so these VALUE accessors are the UNCHARGED psx_read_* — the data-access
* wait-state is charged once, inside the interlock, never here. */
cpu.read_word = psx_read_word;
cpu.write_word = psx_write_word;
cpu.read_half = psx_read_half;
cpu.write_half = psx_write_half;
cpu.read_byte = psx_read_byte;
cpu.write_byte = psx_write_byte;
/* (sljit removed 2026-07-15: overlay_sljit_init_helpers wired the JIT-shard
* host-helper table into cpu here; no shards consume it now.) */
/* BIOS backend select (CLAUDE.md §0 amendment 2026-07-02): LLE (the
* recompiled BIOS — default, reference implementation, oracle) vs the
* opt-in HLE tier (implemented kernel services computed in-runtime, LLE
* fallback for everything else). Boot always starts at the real reset
* vector; with the HLE boot-skip on, the tier's dispatch hook intercepts
* the shell entry one-shot (the boot animation is skipped; kernel init +
* game EXE load still run in the real recompiled BIOS, unpaced) — this
* REPLACES the old fast_boot snapshot restore, and fast_boot=true now
* aliases the boot-skip alone. Env overrides: PSX_BIOS_HLE /
* PSX_BIOS_HLE_KEEP_INTRO ('0' = off, anything else = on). */
{
if (const char* e = std::getenv("PSX_BIOS_HLE"))
bios_hle = (e[0] && e[0] != '0');
if (const char* e = std::getenv("PSX_BIOS_HLE_KEEP_INTRO"))
bios_hle_keep_intro = (e[0] && e[0] != '0');
const bool boot_skip =
(bios_hle && !bios_hle_keep_intro) || fast_boot;
psx_bios_hle_configure(bios_hle ? 1 : 0,
(boot_skip && game_entry_pc != 0) ? 1 : 0);
std::fprintf(stdout, "psxrecomp: bios_backend=%s bios_boot=%s\n",
psx_bios_hle_backend_name(),
psx_bios_hle_boot_skip_enabled()
? "HLE (shell skipped)" : "LLE (real intro)");
}
/* R3000A reset state. */
cpu.pc = 0xBFC00000u;
cpu.cop0[12] = 0x00400000u; /* SR: BEV=1 (boot exception vectors) */
/* User save states (F1-F12 / Shift+F1-F12): slots live in the per-game
* memcard/save dir, keyed by entry_pc + guarded by the boot_state integrity
* key (codegen hash/abi/ver) so a stale/foreign state can never load. */
if (game_entry_pc != 0) {
savestate_configure(memcard_dir.string().c_str(),
memory_get_bios_checksum(), game_entry_pc);
/* Headless / agent load: PSX_LOAD_SLOT=N stages F1..F12 load (0..11)
* at the next safe block boundary after boot. */
if (const char *ls = std::getenv("PSX_LOAD_SLOT")) {
int slot = atoi(ls);
if (slot >= 0 && slot < 12) {
if (psx_netplay_active()) {
std::fprintf(stdout,
"psxrecomp: PSX_LOAD_SLOT=%d ignored (use host F1–F12 after netplay starts)\n",
slot);
} else if (savestate_request_load(slot)) {
std::fprintf(stdout, "psxrecomp: PSX_LOAD_SLOT=%d staged\n", slot);
}
}
}
}
/* Guest netplay: sandbox .pst/.mcd under saves/netplay/ after personal
* roots are known (must follow savestate_configure + memcard_init). */
psx_netplay_bind_guest_saves();
/* Let memory subsystem see SR for cache-isolation checks. */
memory_set_sr_ptr(&cpu.cop0[12]);
/* Wire debug server to CPU state for register queries. */
debug_server_set_cpu(&cpu);
/* Master digests / FRAME_COMMIT for netplay hash_confirm watermark. */
psx_netplay_bind_cpu(&cpu);
/* Solo rollback resim self-check (PSX_RB_SELFCHECK=1, offline only). */
psx_selfcheck_init(&cpu, memory_get_bios_checksum(), game_entry_pc);
/* Execute. */
std::fprintf(stdout, "psxrecomp runtime: executing from PC=0x%08X\n", cpu.pc);
#if defined(PSX_ORACLE_BUILD)
std::fprintf(stdout, "psxrecomp ORACLE: interpreter mode (port %d)\n", DEFAULT_DEBUG_PORT);
interp_init(&cpu);
interp_trace_enable(1);
/* Breakpoints focused on VSync diagnostics.
* Only break on the VSync incrementer — count how many times it's hit. */
interp_break_add(0x8005A5BCu); /* VSync counter incrementer — KSEG0 */
std::fprintf(stderr, "ORACLE: running with BP at 0x8005A5BC (VSync incrementer)...\n");
std::fflush(stderr);
uint64_t total_executed = 0;
const uint64_t max_total = 100000000ULL; /* 100M instructions */
uint32_t vsync_hits = 0;
for (;;) {
uint32_t ran = interp_step(&cpu, 1000000);
total_executed += ran;
if (interp_hit_breakpoint()) {
vsync_hits++;
if (vsync_hits <= 3 || (vsync_hits % 100 == 0)) {
std::fprintf(stderr, "ORACLE: VSync hit #%u at %llu instructions, ra=0x%08X, gte_exec=%llu\n",
vsync_hits, (unsigned long long)total_executed, cpu.gpr[31],
(unsigned long long)gte_get_exec_count());
/* Dump last 20 trace entries for first 3 hits. */
if (vsync_hits <= 3) {
uint64_t tseq = interp_trace_count();
uint32_t tavail = (tseq < 1048576ULL) ? (uint32_t)tseq : 1048576u;
uint32_t tstart = (tavail > 20) ? tavail - 20 : 0;
for (uint32_t ti = tstart; ti < tavail; ti++) {
const InterpTraceEntry* e = interp_trace_get(ti);
if (e) std::fprintf(stderr, " [%llu] PC=0x%08X insn=0x%08X ra=0x%08X v0=0x%08X\n",
(unsigned long long)e->seq, e->pc, e->insn,
e->gpr[31], e->gpr[2]);
}
}
std::fflush(stderr);
}
/* Step past the breakpoint: temporarily remove, step 1, re-add. */
uint32_t bp_pc = cpu.pc;
interp_break_remove(bp_pc);
interp_step(&cpu, 1);
total_executed++;
interp_break_add(bp_pc);
}
if (ran == 0) {
std::fprintf(stderr, "ORACLE: halted at PC=0x%08X after %llu total instructions\n",
cpu.pc, (unsigned long long)total_executed);
break;
}
if (total_executed >= max_total) {
std::fprintf(stderr, "ORACLE: reached %llu instructions, stopping. PC=0x%08X\n",
(unsigned long long)total_executed, cpu.pc);
/* Dump last 30 trace entries (ring-relative). */
uint64_t tseq2 = interp_trace_count();
uint32_t tavail2 = (tseq2 < 1048576ULL) ? (uint32_t)tseq2 : 1048576u;
uint32_t tstart2 = (tavail2 > 30) ? tavail2 - 30 : 0;
for (uint32_t ti = tstart2; ti < tavail2; ti++) {
const InterpTraceEntry* e = interp_trace_get(ti);
if (e) std::fprintf(stderr, " [%llu] PC=0x%08X insn=0x%08X ra=0x%08X\n",
(unsigned long long)e->seq, e->pc, e->insn, e->gpr[31]);
}
std::fflush(stderr);
break;
}
/* Poll debug server. */
debug_server_poll();
}
/* Read VSync counter from RAM. */
uint32_t vsync_counter = cpu.read_word(0x80079D9Cu);
uint32_t init_flag_48 = cpu.read_word(0x80079D48u);
uint32_t init_flag_4C = cpu.read_word(0x80079D4Cu);
std::fprintf(stderr, "ORACLE: VSync counter = 0x%08X (%u), init_flag@48 = 0x%08X, init_flag@4C = 0x%08X\n",
vsync_counter, vsync_counter, init_flag_48, init_flag_4C);
std::fprintf(stderr, "ORACLE: VSync incrementer hit count = %u\n", vsync_hits);
std::fflush(stderr);
#else
/* Deterministic TCB-scheduler trampoline (carve-out): wraps the top-level
* dispatch so a cooperative thread switch unwinds here and re-dispatches the
* target thread, instead of the old per-frame host-fiber recreate. Returns
* only on the abnormal top-level pc==0 exit; the diagnostic dump below runs
* exactly as it did for the bare psx_dispatch. (HLE_SCHEDULER_CARVEOUT_PLAN.md)
*
* Hidden toggle: PSX_HLE_SCHEDULER=0 reverts to the legacy LLE host-fiber
* bridge (default 1 = HLE). The trampoline is transparent in LLE mode (the
* fiber path never longjmps to it). */
std::fprintf(stdout, "psxrecomp: thread scheduler = %s (PSX_HLE_SCHEDULER)\n",
psx_hle_scheduler_enabled() ? "HLE (deterministic TCB)"
: "LLE (host fibers)");
std::fflush(stdout);
/* General control-flow parity trace (parity_trace.h). Armed from boot via
* PSX_PARITY_TRACE=1 so the pre-divergence window is always covered (never
* arm-then-time). Watched TCB / freeze trigger / watch words are env-tunable;
* defaults target the MMX6 cutscene→gameplay wedge (thread1 0xA000E35C,
* trigger dispatch 0x800CD3F8, watch the handshake flag + state struct). */
if (const char* pt = std::getenv("PSX_PARITY_TRACE"); pt && pt[0] && pt[0] != '0') {
auto envhex = [](const char* k, uint32_t dflt) -> uint32_t {
const char* v = std::getenv(k);
return (v && v[0]) ? (uint32_t)std::strtoul(v, nullptr, 0) : dflt;
};
uint32_t tcb = envhex("PSX_PARITY_TCB", 0xA000E35Cu);
uint32_t trigger = envhex("PSX_PARITY_TRIGGER", 0x800CD3F8u);
uint32_t watch[PARITY_WATCH_MAX] = {
0x801FEB78u, /* thread1 stack saved-ra slot */
0x8006D9ACu, /* handshake flag (setter target) */
0x800CD3F8u, /* cutscene state struct: outer/sub */
0x800CD3FCu, /* countdown */
0x800CD404u, /* done flag region */
0x800200F4u, /* func_8002000C resume point */
};
int wc = PARITY_WATCH_MAX;
if (const char* wl = std::getenv("PSX_PARITY_WATCH"); wl && wl[0]) {
wc = 0; std::string s(wl); size_t p = 0;
while (p < s.size() && wc < PARITY_WATCH_MAX) {
size_t c = s.find(',', p);
std::string tok = s.substr(p, c == std::string::npos ? c : c - p);
if (!tok.empty()) watch[wc++] = (uint32_t)std::strtoul(tok.c_str(), nullptr, 0);
if (c == std::string::npos) break; p = c + 1;
}
}
parity_trace_config(tcb, trigger, 0x88u, 0x00u, watch, wc);
parity_trace_arm(1);
std::fprintf(stdout, "psxrecomp: parity trace ARMED tcb=0x%08X trigger=0x%08X (%d watch)\n",
tcb, trigger, wc);
std::fflush(stdout);
}
/* Device-event cycle ring (device_trace.h): armed from boot under the same
* PSX_PARITY_TRACE gate, or PSX_DEVTRACE=1 standalone. Captures every
* CD/DMA/timer/VBlank/SIO/SPU IRQ raise with its guest cycle for the
* cross-process device-timing diff (tools/devtrace_diff.py). */
{
const char* pt = std::getenv("PSX_PARITY_TRACE");
const char* dt = std::getenv("PSX_DEVTRACE");
if ((pt && pt[0] && pt[0] != '0') || (dt && dt[0] && dt[0] != '0')) {
device_trace_arm(1);
std::fprintf(stdout, "psxrecomp: device-event trace ARMED\n");
std::fflush(stdout);
}
}
/* Delay-sync: do not free-run boot while HELLO/START is in flight.
* Park until tick 0 pads are published, then enter the guest. */
if (psx_netplay_active()) {
SDL_PumpEvents();
SDL_FlushEvent(SDL_QUIT);
std::printf("psxrecomp: netplay waiting for peer START + tick-0 admit…\n");
std::fflush(stdout);
netplay_barrier_admit(-1);
if (psx_return_to_lobby_requested())
goto soft_return_lobby;
netplay_host_present_uncap();
/* Idle-skip advances guest cycles without CD/device aging in lockstep —
* force off so both peers share the same CD FSM (dig_c folds CD). */
{
extern int g_idle_skip_enabled;
if (g_idle_skip_enabled != 0) {
g_idle_skip_enabled = 0;
std::printf("psxrecomp: netplay — idle_skip forced off\n");
std::fflush(stdout);
}
}
g_auto_skip_fmv = 0;
std::printf("psxrecomp: netplay lockstep armed (sim_tick=%u, vsync off)\n",
(unsigned)psx_netplay_sim_tick());
std::fflush(stdout);
}
psx_scheduler_run(&cpu);
if (psx_return_to_lobby_requested() && g_netplay_from_lobby)
goto soft_return_lobby;
#endif
/* If we reach here, all execution completed without MMIO abort.
* During normal operation the guest runs an infinite main loop and the
* top-level psx_dispatch NEVER returns. Reaching this point means the
* outermost trampoline loop saw cpu->pc == 0 (some jr/tail-transfer
* published a null PC) — an abnormal boot exit. Dump the always-on
* fntrace ring tail (last dispatch chain) to a JSON artifact so we can
* see exactly which targets led to the null PC. (CLAUDE.md ring-buffer
* model: consume the always-on ring after the fact, not arm-and-time.) */
{
FILE* tf = std::fopen("psx_cps_exit_trace.json", "wb");
if (tf) {
std::fprintf(tf, "{\n \"final_pc\": \"0x%08X\",\n \"final_ra\": \"0x%08X\",\n"
" \"final_sp\": \"0x%08X\",\n \"fntrace_seq\": %llu,\n \"tail\": [\n",
cpu.pc, cpu.gpr[31], cpu.gpr[29],
(unsigned long long)g_fntrace_seq);
uint64_t seq = g_fntrace_seq;
uint32_t n = seq < 128u ? (uint32_t)seq : 128u;
for (uint32_t i = 0; i < n; i++) {
uint64_t idx = seq - n + i;
const FntraceEntry* e = &g_fntrace_ring[idx % FNTRACE_RING_CAP];
std::fprintf(tf,
" {\"seq\":%llu,\"frame\":%u,\"target\":\"0x%08X\",\"ra\":\"0x%08X\","
"\"sp\":\"0x%08X\",\"a0\":\"0x%08X\",\"a1\":\"0x%08X\"}%s\n",
(unsigned long long)idx, e->frame, e->target, e->ra, e->sp,
e->a0, e->a1, (i + 1 < n) ? "," : "");
}
std::fprintf(tf, " ],\n \"stack\": [\n");
uint32_t sbase = (cpu.gpr[29] - 0x40u) & ~3u;
for (int w = 0; w < 40; w++) {
uint32_t a = sbase + (uint32_t)w * 4u;
uint32_t v = cpu.read_word(a);
std::fprintf(tf, " {\"addr\":\"0x%08X\",\"val\":\"0x%08X\"}%s\n",
a, v, (w < 39) ? "," : "");
}
std::fprintf(tf, " ]\n}\n");
std::fclose(tf);
}
}
/* Diagnostic: the guest published a null PC at the top level (abnormal). With
* PSX_EXIT_HALT set, halt-and-serve here instead of shutting down so the
* still-loaded overlays + full guest state are live-inspectable over TCP. */
{ const char *e = std::getenv("PSX_EXIT_HALT");
if (e && e[0] && e[0] != '0') {
extern void psx_fatal_halt(const char *reason);
psx_fatal_halt("top-level dispatch returned PC=0 (abnormal boot exit — inspect live)");
}
}
std::fprintf(stdout, "psxrecomp runtime: execution completed, PC=0x%08X\n", cpu.pc);
{ extern uint64_t g_slice_fired, g_slice_irq_taken, g_dirty_ram_insns_run;
extern uint32_t g_slice_exit_pc, g_slice_exit_reason, g_slice_exit_iter;
extern uint32_t g_slice_exit_dispatchable, g_slice_exit_dirty, g_slice_exit_in_text, g_slice_exit_want;
std::fprintf(stdout, "psxrecomp runtime: [slice diag] slice_fired=%llu slice_irq_taken=%llu dirty_insns=%llu exit_pc=0x%08X reason=%u iter=%u dispatchable=%u dirty=%u in_text=%u want=%u\n",
(unsigned long long)g_slice_fired, (unsigned long long)g_slice_irq_taken,
(unsigned long long)g_dirty_ram_insns_run, g_slice_exit_pc, g_slice_exit_reason,
g_slice_exit_iter, g_slice_exit_dispatchable, g_slice_exit_dirty,
g_slice_exit_in_text, g_slice_exit_want); }
shutdown_runtime();
if (g_gl_active) gl_renderer_shutdown();
if (g_vk_active) vk_renderer_shutdown();
SDL_DestroyTexture(sdl_texture); /* NULL-safe in GL mode */
SDL_DestroyRenderer(sdl_renderer); /* NULL-safe in GL mode */
SDL_DestroyWindow(sdl_window);
SDL_Quit();
return 0;
soft_return_lobby:
/* Netplay soft-exit: tear down the match, keep the lobby seat, and reopen
* the launcher on the LOBBY room so every peer can rematch. */
teardown_game_session_keep_lobby();
#if defined(RECOMP_LAUNCHER) && defined(PSX_HAS_LOBBY_CLIENT)
ae_np_prepare_lobby_rematch();
{
std::string assets_dir_str = exe_dir_from_argv(argv[0]).string();
std::string rui_title = (game_name.empty() ? std::string("PSX") : game_name)
+ " - Launcher";
std::string rui_initial_disc = disc_path_str;
RecompLauncherCSettings ls{};
ls.output_method = 2;
ls.window_scale = std::max(1, std::min(4, g_video_win_w / 320));
ls.fullscreen = g_fullscreen ? 1 : 0;
ls.enable_audio = 1;
ls.audio_freq = 44100;
ls.volume = 100;
ls.window_width = g_video_win_w;
ls.renderer = g_video_renderer;
ls.supersampling = g_video_scale;
ls.antialiasing = g_video_aa ? 1 : 0;
ls.texture_filter = g_video_texfilter;
ls.screen_kind = g_video_screen;
ls.frame_interp = g_frame_interpolation ? 1 : 0;
ls.frame_interp_fps = g_frame_interpolation_fps;
ls.spu_hq = g_audio_spu_hq ? 1 : 0;
ls.auto_skip_fmv = g_auto_skip_fmv ? 1 : 0;
ls.turbo_loads = g_turbo_loads_enabled ? 1 : 0;
ls.aspect_index = (g_video_aspect_num * 9 == g_video_aspect_den * 21) ? 2
: (g_video_aspect_num == 16 && g_video_aspect_den == 9) ? 1 : 0;
std::snprintf(ls.netplay_player_name, sizeof(ls.netplay_player_name), "%s",
psx_lobby_display_name());
std::snprintf(ls.bios_path, sizeof(ls.bios_path), "%s", bios_path_str.c_str());
/* Preserve input devices across soft-return. A zeroed ls left every
* player_src at None, so the rematch UI (and a subsequent writeback)
* looked like netplay had wiped the pad assignment. */
{
const int n = std::min(PSX_MAX_PLAYERS, RECOMP_LAUNCHER_MAX_PLAYERS);
for (int i = 0; i < n; ++i) {
const std::string& d = player_device[i];
ls.player_src[i] = (d == "keyboard") ? 1
: (d == "none" || d.empty()) ? 0 : 2;
ls.deadzone[i] = (player_deadzone[i] * 100 + 16383) / 32767;
ls.pad_mode[i] = (ls.player_src[i] == 1)
? PSXRecompV4::PAD_MODE_DIGITAL
: player_mode[i];
ls.player_gamepad_guid[i][0] = '\0';
if (ls.player_src[i] == 2 && !d.empty() && d != "auto" &&
d != "gamepad" && d != "controller") {
std::snprintf(ls.player_gamepad_guid[i],
sizeof(ls.player_gamepad_guid[i]), "%s",
d.c_str());
}
}
}
RecompLauncherCGameInfo gi{};
launcher_profile_apply("psx", &gi);
gi.name = game_name.empty() ? nullptr : game_name.c_str();
gi.num_players = game_players;
g_lnch_game_players = game_players;
psx_lobby_set_max_slots(game_players);
gi.netplay_supported =
(game_players >= 2 && game_players <= PSX_MAX_PLAYERS) ? 1 : 0;
gi.netplay = &g_lnch_netplay_callbacks;
gi.resume_netplay_room = 1;
gi.resume_netplay_endpoint = ae_np_lan_endpoint_cstr();
gi.disc_verify = ae_disc_verify;
gi.memcard_inspect = ae_memcard_inspect;
gi.pad_mode_selectable = ctrl_lock_mode ? 0 : 1;
gi.allow_hybrid = ctrl_allow_hybrid ? 1 : 0;
gi.locked_pad_mode = ctrl_locked_mode[0];
gi.lock_device = ctrl_lock_device ? 1 : 0;
#if defined(PSX_HAS_GAME_CODEGEN)
psx_game_codegen_setup_apply(&gi);
#endif
char rui_out_disc[1024] = {0};
recomp_launcher_set_preserve_sdl(1);
const int rui_rc = recomp_launcher_run_window(
rui_title.c_str(), &ls, &gi, assets_dir_str.c_str(),
rui_initial_disc.c_str(), rui_out_disc, sizeof(rui_out_disc));
if (rui_rc == 1) {
/* User closed the launcher — leave the lobby and exit. */
if (g_lnch_netplay_callbacks.leave)
(void)g_lnch_netplay_callbacks.leave(g_lnch_netplay_callbacks.ctx);
else
(void)psx_lobby_leave();
psx_lobby_disconnect();
SDL_Quit();
return 0;
}
#if defined(PSX_HAS_GAME_CODEGEN)
if (rui_rc == RECOMP_LAUNCHER_RESULT_RELAUNCH) {
const char* disc_for_relaunch =
rui_out_disc[0] ? rui_out_disc
: (rui_initial_disc.empty()
? ""
: rui_initial_disc.c_str());
std::fprintf(stdout,
"psxrecomp: relaunch after generate/rebuild\n");
psx_game_codegen_relaunch_or_exit(disc_for_relaunch);
SDL_Quit();
return 1;
}
#endif
if (rui_rc == 0) {
if (rui_out_disc[0]) {
resolved_disc = normalize_disc_path_for_launch(rui_out_disc);
disc_path_str = resolved_disc.string();
}
if (ls.netplay_launch.enabled) {
net_cfg = {};
net_cfg.enabled = 1;
net_cfg.local_slot = ls.netplay_launch.local_slot;
net_cfg.input_player = ls.netplay_launch.input_player;
net_cfg.session_id = ls.netplay_launch.session_id;
net_cfg.input_delay = ls.netplay_launch.input_delay;
net_cfg.input_prediction = ls.netplay_launch.input_prediction;
net_cfg.force_input_relay = ls.netplay_launch.force_input_relay ? 1 : 0;
net_cfg.force_turn = ls.netplay_launch.force_turn ? 1 : 0;
net_cfg.rollback = ls.netplay_launch.rollback ? 1 : 0;
net_cfg.player_count = ls.netplay_launch.player_count;
net_cfg.slot_count = ae_np_session_slot_count(
ls.netplay_launch.player_count, ls.netplay_launch.max_slots,
ls.netplay_launch.local_slot, game_players);
if (net_cfg.player_count <= 0)
net_cfg.player_count = net_cfg.slot_count;
std::snprintf(net_cfg.bind_hostport, sizeof(net_cfg.bind_hostport), "%s",
ls.netplay_launch.bind_hostport);
std::snprintf(net_cfg.peer_hostport, sizeof(net_cfg.peer_hostport), "%s",
ls.netplay_launch.peer_hostport);
g_netplay_from_lobby = 1;
} else {
net_cfg = {};
g_netplay_from_lobby = 0;
}
/* Same player_src → player_device writeback as the first launcher
* exit path, so rematch honors (or keeps) the card selections. */
{
const int n = std::min(PSX_MAX_PLAYERS, RECOMP_LAUNCHER_MAX_PLAYERS);
for (int i = 0; i < n; ++i) {
if (ls.player_src[i] == 1) {
player_device[i] = "keyboard";
player_mode[i] = PSXRecompV4::PAD_MODE_DIGITAL;
} else if (ls.player_src[i] == 0) {
player_device[i] = "none";
player_mode[i] = ls.pad_mode[i];
} else if (ls.player_gamepad_guid[i][0]) {
player_device[i] = ls.player_gamepad_guid[i];
player_mode[i] = ls.pad_mode[i];
} else if (player_device[i] == "none" ||
player_device[i] == "keyboard") {
player_device[i] = "gamepad";
player_mode[i] = ls.pad_mode[i];
} else {
player_mode[i] = ls.pad_mode[i];
}
player_deadzone[i] = ls.deadzone[i] * 32767 / 100;
}
}
/* Persist controller (and rematch video) choices without wiping
* the rest of settings.toml — merge into the on-disk file. */
{
const auto settings_path =
exe_dir_from_argv(argv[0]) / "settings.toml";
PSXRecompV4::UserSettings us =
PSXRecompV4::load_user_settings(settings_path);
const int un = std::min(PSX_MAX_PLAYERS,
PSXRecompV4::UserSettings::kMaxControllerPlayers);
for (int i = 0; i < un; ++i) {
us.p_device[i] = player_device[i];
us.has_p_device[i] = true;
us.p_mode[i] = player_mode[i];
us.has_p_mode[i] = true;
us.p_deadzone[i] = player_deadzone[i];
us.has_p_deadzone[i] = true;
}
us.deadzone = player_deadzone[0];
us.has_deadzone = true;
us.renderer = ls.renderer;
us.has_renderer = true;
us.supersampling = ls.supersampling;
us.has_supersampling = true;
us.antialiasing = ls.antialiasing != 0;
us.has_antialiasing = true;
us.texture_filter = ls.texture_filter;
us.has_texture_filter = true;
us.screen_kind = ls.screen_kind;
us.has_screen_kind = true;
us.frame_interpolation = ls.frame_interp != 0;
us.has_frame_interpolation = true;
us.frame_interpolation_fps = ls.frame_interp_fps;
us.has_frame_interpolation_fps = true;
us.spu_hq = ls.spu_hq != 0;
us.has_spu_hq = true;
us.auto_skip_fmv = ls.auto_skip_fmv != 0;
us.has_auto_skip_fmv = true;
us.turbo_loads = ls.turbo_loads != 0;
us.has_turbo_loads = true;
us.fullscreen = ls.fullscreen != 0;
us.has_fullscreen = true;
us.window_width = ls.window_width > 0 ? ls.window_width : g_video_win_w;
us.has_window_width = true;
switch (ls.aspect_index) {
case 2: us.aspect_num = 21; us.aspect_den = 9; break;
case 1: us.aspect_num = 16; us.aspect_den = 9; break;
default: us.aspect_num = 4; us.aspect_den = 3; break;
}
us.has_aspect_ratio = true;
(void)PSXRecompV4::save_user_settings(settings_path, us);
}
g_video_renderer = ls.renderer;
g_video_scale = ls.supersampling;
g_video_aa = ls.antialiasing;
g_video_texfilter = ls.texture_filter;
g_video_screen = ls.screen_kind;
g_auto_skip_fmv = ls.auto_skip_fmv ? 1 : 0;
g_turbo_loads_enabled = ls.turbo_loads ? 1 : 0;
g_fullscreen = ls.fullscreen != 0;
g_frame_interpolation = ls.frame_interp ? 1 : 0;
g_frame_interpolation_fps = ls.frame_interp_fps;
g_audio_spu_hq = ls.spu_hq != 0;
switch (ls.aspect_index) {
case 2: g_video_aspect_num = 21; g_video_aspect_den = 9; break;
case 1: g_video_aspect_num = 16; g_video_aspect_den = 9; break;
default: g_video_aspect_num = 4; g_video_aspect_den = 3; break;
}
g_video_win_w = ls.window_width > 0 ? ls.window_width : g_video_win_w;
std::printf("psxrecomp: rematch from lobby (netplay=%d)\n",
net_cfg.enabled ? 1 : 0);
std::fflush(stdout);
goto session_reboot;
}
}
#endif
psx_lobby_disconnect();
SDL_Quit();
return 0;
}
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