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psxrecomp/runtime/src/hd_texture_pack.cpp
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Codex 4af774e913 style: normalize HD texture source endings
2026-08-25 01:50:55 -07:00

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#include "hd_texture_pack.h"
#ifndef HD_TEXTURE_PACK_DISABLE_PNG_DECODE
#include "../third_party/stb_image.h" /* declarations only; implementation is shared */
#endif
#include <algorithm>
#include <array>
#include <condition_variable>
#include <cctype>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <deque>
#include <filesystem>
#include <fstream>
#include <limits>
#include <memory>
#include <mutex>
#include <new>
#include <string>
#include <thread>
#include <unordered_map>
#include <utility>
#include <vector>
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif
namespace fs = std::filesystem;
namespace {
constexpr unsigned kVramWidth = 1024;
constexpr unsigned kVramHeight = 512;
/* GPU primitives invalidate VRAM constantly. Keep a coarse spatial index so
* the common case does not walk every historical upload. The index is only
* a broad phase; fragment rectangles remain authoritative below. */
constexpr unsigned kUploadIndexTileSize = 32;
constexpr unsigned kUploadIndexCols =
(kVramWidth + kUploadIndexTileSize - 1) / kUploadIndexTileSize;
constexpr unsigned kUploadIndexRows =
(kVramHeight + kUploadIndexTileSize - 1) / kUploadIndexTileSize;
constexpr size_t kUploadIndexCells =
size_t{kUploadIndexCols} * kUploadIndexRows;
constexpr size_t kVramWords = size_t{kVramWidth} * kVramHeight;
constexpr size_t kDefaultDecodeBudget = size_t{64} * 1024 * 1024;
constexpr uint32_t kTrackingStateMagic = 0x31544448u; /* "HDT1" LE */
constexpr uint32_t kTrackingStateVersion = 1;
constexpr size_t kTrackingStateHeaderBytes = 24;
constexpr size_t kTrackingStateUploadBytes = 20;
constexpr size_t kTrackingStateFragmentBytes = 12;
constexpr size_t kMaxTrackingStateBytes = size_t{8} * 1024 * 1024;
constexpr uint32_t kMaxTrackingStateUploads = 8192;
constexpr uint32_t kMaxTrackingStateFragments = 262144;
#ifndef HD_TEXTURE_PACK_DISABLE_PNG_DECODE
constexpr size_t kMaxDecodeQueue = 32;
constexpr size_t kMaxPngFileBytes = size_t{64} * 1024 * 1024;
#endif
uint64_t make_key(uint32_t texture_hash, uint32_t palette_hash) {
return (uint64_t{texture_hash} << 32) | palette_hash;
}
void write_error(char* error, size_t capacity, const std::string& message) {
if (!error || capacity == 0) return;
std::snprintf(error, capacity, "%s", message.c_str());
}
std::string trim(std::string value) {
const auto first = std::find_if_not(value.begin(), value.end(),
[](unsigned char c) { return std::isspace(c) != 0; });
const auto last = std::find_if_not(value.rbegin(), value.rend(),
[](unsigned char c) { return std::isspace(c) != 0; }).base();
if (first >= last) return {};
return std::string(first, last);
}
std::string ascii_lower(std::string value) {
for (char& c : value)
c = static_cast<char>(std::tolower(static_cast<unsigned char>(c)));
return value;
}
bool ends_with_ci(const std::string& value, const char* suffix) {
const std::string lower = ascii_lower(value);
const std::string wanted = ascii_lower(suffix);
return lower.size() >= wanted.size() &&
lower.compare(lower.size() - wanted.size(), wanted.size(), wanted) == 0;
}
bool parse_hex_component(const std::string& text, uint32_t* out) {
if (!out || text.empty() || text.size() > 8) return false;
uint32_t value = 0;
for (const unsigned char c : text) {
unsigned digit;
if (c >= '0' && c <= '9') digit = c - '0';
else if (c >= 'a' && c <= 'f') digit = c - 'a' + 10;
else if (c >= 'A' && c <= 'F') digit = c - 'A' + 10;
else return false;
value = (value << 4) | digit;
}
*out = value;
return true;
}
bool parse_key_text(const std::string& text,
uint32_t* texture_hash,
uint32_t* palette_hash) {
const size_t dash = text.find('-');
if (dash == std::string::npos || text.find('-', dash + 1) != std::string::npos)
return false;
return parse_hex_component(text.substr(0, dash), texture_hash) &&
parse_hex_component(text.substr(dash + 1), palette_hash);
}
bool parse_png_filename(const fs::path& path,
uint32_t* texture_hash,
uint32_t* palette_hash) {
if (ascii_lower(path.extension().string()) != ".png") return false;
return parse_key_text(path.stem().string(), texture_hash, palette_hash);
}
const std::array<uint32_t, 256>& crc_table() {
static const std::array<uint32_t, 256> table = [] {
std::array<uint32_t, 256> result{};
for (uint32_t i = 0; i < result.size(); ++i) {
uint32_t value = i;
for (unsigned bit = 0; bit < 8; ++bit)
value = (value >> 1) ^ ((value & 1) ? 0xEDB88320u : 0u);
result[i] = value;
}
return result;
}();
return table;
}
uint32_t crc_byte(uint32_t crc, uint8_t value) {
return crc_table()[(crc ^ value) & 0xFFu] ^ (crc >> 8);
}
struct Rect {
unsigned x = 0;
unsigned y = 0;
unsigned width = 0;
unsigned height = 0;
};
struct Fragment {
Rect rect;
unsigned source_x = 0;
unsigned source_y = 0;
};
bool intersects(const Rect& a, const Rect& b) {
return a.x < b.x + b.width && b.x < a.x + a.width &&
a.y < b.y + b.height && b.y < a.y + a.height;
}
bool contains_point(const Rect& rect, unsigned x, unsigned y) {
return x >= rect.x && x < rect.x + rect.width &&
y >= rect.y && y < rect.y + rect.height;
}
std::vector<Fragment> physical_fragments(unsigned x,
unsigned y,
unsigned width,
unsigned height) {
std::vector<Fragment> result;
if (width == 0 || height == 0 || width > kVramWidth || height > kVramHeight)
return result;
const unsigned px = x & (kVramWidth - 1);
const unsigned py = y & (kVramHeight - 1);
const unsigned first_w = std::min(width, kVramWidth - px);
const unsigned first_h = std::min(height, kVramHeight - py);
const std::array<std::pair<unsigned, unsigned>, 2> xs{{
{px, first_w}, {0, width - first_w}
}};
const std::array<std::pair<unsigned, unsigned>, 2> ys{{
{py, first_h}, {0, height - first_h}
}};
unsigned source_y = 0;
for (const auto& yspan : ys) {
if (yspan.second == 0) continue;
unsigned source_x = 0;
for (const auto& xspan : xs) {
if (xspan.second != 0) {
result.push_back({
{xspan.first, yspan.first, xspan.second, yspan.second},
source_x, source_y
});
}
source_x += xspan.second;
}
source_y += yspan.second;
}
return result;
}
std::vector<Rect> physical_rects(unsigned x,
unsigned y,
unsigned width,
unsigned height) {
std::vector<Rect> result;
for (const Fragment& fragment : physical_fragments(x, y, width, height))
result.push_back(fragment.rect);
return result;
}
std::vector<Fragment> subtract_fragment(const Fragment& original,
const Rect& cut) {
if (!intersects(original.rect, cut)) return {original};
const unsigned left = std::max(original.rect.x, cut.x);
const unsigned right = std::min(original.rect.x + original.rect.width,
cut.x + cut.width);
const unsigned top = std::max(original.rect.y, cut.y);
const unsigned bottom = std::min(original.rect.y + original.rect.height,
cut.y + cut.height);
std::vector<Fragment> result;
const auto add = [&](unsigned x, unsigned y, unsigned width, unsigned height) {
if (width == 0 || height == 0) return;
result.push_back({
{x, y, width, height},
original.source_x + x - original.rect.x,
original.source_y + y - original.rect.y
});
};
add(original.rect.x, original.rect.y, original.rect.width,
top - original.rect.y);
add(original.rect.x, bottom, original.rect.width,
original.rect.y + original.rect.height - bottom);
add(original.rect.x, top, left - original.rect.x, bottom - top);
add(right, top, original.rect.x + original.rect.width - right, bottom - top);
return result;
}
std::vector<Rect> subtract_rect(const Rect& original, const Rect& cut) {
const Fragment source{original, 0, 0};
std::vector<Rect> result;
for (const Fragment& piece : subtract_fragment(source, cut))
result.push_back(piece.rect);
return result;
}
struct Upload {
uint64_t serial = 0;
uint32_t hash = 0;
uint16_t width = 0;
uint16_t height = 0;
/* Conservative broad phase for GPU-draw invalidation. Fragment coverage
* remains authoritative; this union only avoids walking unrelated uploads. */
Rect bounds{};
std::vector<Fragment> fragments;
/* Runtime-only broad-phase membership; never serialized. */
std::vector<uint16_t> index_tiles;
};
Rect fragment_bounds(const std::vector<Fragment>& fragments) {
Rect bounds{};
for (const Fragment& fragment : fragments) {
if (bounds.width == 0 || bounds.height == 0) {
bounds = fragment.rect;
continue;
}
const unsigned right = std::max(bounds.x + bounds.width,
fragment.rect.x + fragment.rect.width);
const unsigned bottom = std::max(bounds.y + bounds.height,
fragment.rect.y + fragment.rect.height);
bounds.x = std::min(bounds.x, fragment.rect.x);
bounds.y = std::min(bounds.y, fragment.rect.y);
bounds.width = right - bounds.x;
bounds.height = bottom - bounds.y;
}
return bounds;
}
void append_u16_le(std::vector<uint8_t>& output, uint16_t value) {
output.push_back(static_cast<uint8_t>(value));
output.push_back(static_cast<uint8_t>(value >> 8));
}
void append_u32_le(std::vector<uint8_t>& output, uint32_t value) {
append_u16_le(output, static_cast<uint16_t>(value));
append_u16_le(output, static_cast<uint16_t>(value >> 16));
}
void append_u64_le(std::vector<uint8_t>& output, uint64_t value) {
append_u32_le(output, static_cast<uint32_t>(value));
append_u32_le(output, static_cast<uint32_t>(value >> 32));
}
bool take_u16_le(const uint8_t** cursor, const uint8_t* end, uint16_t* out) {
if (!cursor || !*cursor || !out || end - *cursor < 2) return false;
const uint8_t* p = *cursor;
*out = static_cast<uint16_t>(p[0]) |
static_cast<uint16_t>(static_cast<uint16_t>(p[1]) << 8);
*cursor += 2;
return true;
}
bool take_u32_le(const uint8_t** cursor, const uint8_t* end, uint32_t* out) {
uint16_t low = 0, high = 0;
if (!take_u16_le(cursor, end, &low) ||
!take_u16_le(cursor, end, &high))
return false;
*out = static_cast<uint32_t>(low) |
(static_cast<uint32_t>(high) << 16);
return true;
}
bool take_u64_le(const uint8_t** cursor, const uint8_t* end, uint64_t* out) {
uint32_t low = 0, high = 0;
if (!take_u32_le(cursor, end, &low) ||
!take_u32_le(cursor, end, &high))
return false;
*out = static_cast<uint64_t>(low) |
(static_cast<uint64_t>(high) << 32);
return true;
}
bool valid_fragment(const Upload& upload, const Fragment& fragment) {
const Rect& rect = fragment.rect;
return rect.width != 0 && rect.height != 0 &&
rect.x < kVramWidth && rect.y < kVramHeight &&
rect.width <= kVramWidth - rect.x &&
rect.height <= kVramHeight - rect.y &&
fragment.source_x < upload.width &&
fragment.source_y < upload.height &&
rect.width <= unsigned{upload.width} - fragment.source_x &&
rect.height <= unsigned{upload.height} - fragment.source_y;
}
bool parse_tracking_state(const uint8_t* data, size_t size,
uint64_t* out_next_serial,
std::vector<Upload>* out_uploads) {
if (!data || size < kTrackingStateHeaderBytes ||
size > kMaxTrackingStateBytes || !out_next_serial)
return false;
const uint8_t* cursor = data;
const uint8_t* end = data + size;
uint32_t magic = 0, version = 0, upload_count = 0, reserved = 0;
uint64_t next_serial = 0, max_serial = 0;
uint64_t total_fragments = 0;
if (!take_u32_le(&cursor, end, &magic) ||
!take_u32_le(&cursor, end, &version) ||
!take_u64_le(&cursor, end, &next_serial) ||
!take_u32_le(&cursor, end, &upload_count) ||
!take_u32_le(&cursor, end, &reserved) ||
magic != kTrackingStateMagic || version != kTrackingStateVersion ||
next_serial == 0 || reserved != 0 ||
upload_count > kMaxTrackingStateUploads)
return false;
std::vector<Upload> parsed;
if (out_uploads) parsed.reserve(upload_count);
std::vector<uint64_t> serials;
serials.reserve(upload_count);
for (uint32_t i = 0; i < upload_count; ++i) {
Upload upload;
uint32_t fragment_count = 0;
if (!take_u64_le(&cursor, end, &upload.serial) ||
!take_u32_le(&cursor, end, &upload.hash) ||
!take_u16_le(&cursor, end, &upload.width) ||
!take_u16_le(&cursor, end, &upload.height) ||
!take_u32_le(&cursor, end, &fragment_count) ||
upload.serial == 0 || upload.width == 0 || upload.height == 0 ||
upload.width > kVramWidth || upload.height > kVramHeight ||
fragment_count == 0 ||
fragment_count > kMaxTrackingStateFragments - total_fragments)
return false;
total_fragments += fragment_count;
upload.fragments.reserve(fragment_count);
for (uint32_t j = 0; j < fragment_count; ++j) {
Fragment fragment;
uint16_t x = 0, y = 0, width = 0, height = 0;
uint16_t source_x = 0, source_y = 0;
if (!take_u16_le(&cursor, end, &x) ||
!take_u16_le(&cursor, end, &y) ||
!take_u16_le(&cursor, end, &width) ||
!take_u16_le(&cursor, end, &height) ||
!take_u16_le(&cursor, end, &source_x) ||
!take_u16_le(&cursor, end, &source_y))
return false;
fragment.rect = Rect{x, y, width, height};
fragment.source_x = source_x;
fragment.source_y = source_y;
if (!valid_fragment(upload, fragment)) return false;
for (const Fragment& prior : upload.fragments)
if (intersects(prior.rect, fragment.rect)) return false;
upload.fragments.push_back(fragment);
}
upload.bounds = fragment_bounds(upload.fragments);
if (std::find(serials.begin(), serials.end(), upload.serial) !=
serials.end())
return false;
serials.push_back(upload.serial);
max_serial = std::max(max_serial, upload.serial);
if (out_uploads) parsed.push_back(std::move(upload));
}
if (cursor != end || next_serial <= max_serial) return false;
*out_next_serial = next_serial;
if (out_uploads) *out_uploads = std::move(parsed);
return true;
}
bool covered_by_upload(const Upload& upload, const std::vector<Rect>& query) {
for (const Rect& wanted : query) {
std::vector<Rect> uncovered{wanted};
for (const Fragment& fragment : upload.fragments) {
std::vector<Rect> next;
for (const Rect& piece : uncovered) {
std::vector<Rect> remainder = subtract_rect(piece, fragment.rect);
next.insert(next.end(), remainder.begin(), remainder.end());
}
uncovered.swap(next);
if (uncovered.empty()) break;
}
if (!uncovered.empty()) return false;
}
return true;
}
struct EntryRecord {
uint32_t texture_hash = 0;
uint32_t palette_hash = 0;
std::string replacement_path;
std::string logical_path;
bool ambiguous = false;
};
struct DecodedImage {
std::vector<uint8_t> rgba;
uint32_t width = 0;
uint32_t height = 0;
};
enum class DecodeState { Queued, Loading, Ready, Failed };
struct DecodeItem {
DecodeState state = DecodeState::Queued;
std::string path;
std::shared_ptr<DecodedImage> image;
size_t bytes = 0;
uint64_t last_used = 0;
};
struct DecodeCache {
std::mutex mutex;
std::condition_variable wake;
std::unordered_map<uint64_t, DecodeItem> items;
std::deque<uint64_t> queue;
std::thread worker;
size_t budget = kDefaultDecodeBudget;
size_t used = 0;
uint64_t tick = 0;
bool started = false;
bool stop = false;
~DecodeCache() {
{
std::lock_guard<std::mutex> lock(mutex);
stop = true;
}
wake.notify_all();
if (worker.joinable()) worker.join();
}
};
struct PixelLease {
std::shared_ptr<DecodedImage> image;
};
void evict_decode_cache(DecodeCache& cache, size_t incoming = 0) {
while (cache.used + incoming > cache.budget) {
auto victim = cache.items.end();
for (auto it = cache.items.begin(); it != cache.items.end(); ++it) {
if (it->second.state != DecodeState::Ready) continue;
if (victim == cache.items.end() ||
it->second.last_used < victim->second.last_used)
victim = it;
}
if (victim == cache.items.end()) break;
cache.used -= victim->second.bytes;
cache.items.erase(victim);
}
}
#ifndef HD_TEXTURE_PACK_DISABLE_PNG_DECODE
void decode_worker(DecodeCache* cache) {
#ifdef _WIN32
SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_BELOW_NORMAL);
#endif
for (;;) {
uint64_t key = 0;
std::string path;
{
std::unique_lock<std::mutex> lock(cache->mutex);
cache->wake.wait(lock, [&] { return cache->stop || !cache->queue.empty(); });
if (cache->stop) return;
key = cache->queue.front();
cache->queue.pop_front();
auto it = cache->items.find(key);
if (it == cache->items.end()) continue;
it->second.state = DecodeState::Loading;
path = it->second.path;
}
std::vector<uint8_t> encoded;
{
std::ifstream input(path, std::ios::binary | std::ios::ate);
std::streamoff length = -1;
if (input) length = static_cast<std::streamoff>(input.tellg());
if (length > 0 && static_cast<uint64_t>(length) <= kMaxPngFileBytes &&
static_cast<uint64_t>(length) <=
static_cast<uint64_t>(std::numeric_limits<int>::max())) {
encoded.resize(static_cast<size_t>(length));
input.seekg(0);
if (!input.read(reinterpret_cast<char*>(encoded.data()), length))
encoded.clear();
}
}
int width = 0;
int height = 0;
int components = 0;
stbi_uc* loaded = encoded.empty() ? nullptr : stbi_load_from_memory(
encoded.data(), static_cast<int>(encoded.size()),
&width, &height, &components, 4);
std::shared_ptr<DecodedImage> decoded;
size_t bytes = 0;
if (loaded && width > 0 && height > 0 &&
static_cast<uint64_t>(width) * static_cast<uint64_t>(height) <=
std::numeric_limits<size_t>::max() / 4) {
bytes = static_cast<size_t>(width) * static_cast<size_t>(height) * 4;
decoded = std::make_shared<DecodedImage>();
decoded->width = static_cast<uint32_t>(width);
decoded->height = static_cast<uint32_t>(height);
decoded->rgba.assign(loaded, loaded + bytes);
}
if (loaded) stbi_image_free(loaded);
std::lock_guard<std::mutex> lock(cache->mutex);
auto it = cache->items.find(key);
if (it == cache->items.end()) continue;
if (!decoded || bytes > cache->budget) {
it->second.state = DecodeState::Failed;
continue;
}
evict_decode_cache(*cache, bytes);
if (cache->used + bytes > cache->budget) {
it->second.state = DecodeState::Failed;
continue;
}
it->second.image = std::move(decoded);
it->second.bytes = bytes;
it->second.last_used = ++cache->tick;
it->second.state = DecodeState::Ready;
cache->used += bytes;
}
}
#endif
bool directory_has_pack_png(const fs::path& directory) {
std::error_code ec;
for (fs::directory_iterator it(directory, ec), end; !ec && it != end; it.increment(ec)) {
if (!it->is_regular_file(ec)) continue;
uint32_t texture_hash = 0;
uint32_t palette_hash = 0;
if (parse_png_filename(it->path(), &texture_hash, &palette_hash)) return true;
}
return false;
}
void parse_hashes_ini(const fs::path& path,
std::unordered_map<uint64_t, std::string>* mappings) {
if (!mappings) return;
std::ifstream input(path);
if (!input) return;
std::string line;
while (std::getline(input, line)) {
if (!line.empty() && line.back() == '\r') line.pop_back();
const std::string stripped = trim(line);
if (stripped.empty() || stripped[0] == '#' || stripped[0] == '[')
continue;
const size_t equal = stripped.find('=');
if (equal == std::string::npos) continue;
uint32_t texture_hash = 0;
uint32_t palette_hash = 0;
if (!parse_key_text(trim(stripped.substr(0, equal)),
&texture_hash, &palette_hash))
continue;
const std::string logical = trim(stripped.substr(equal + 1));
if (!logical.empty())
(*mappings)[make_key(texture_hash, palette_hash)] = logical;
}
}
std::vector<Rect> query_rectangles(const HdTextureDrawQuery& query) {
const unsigned pixels_per_word = query.depth == HD_TEXTURE_DEPTH_4BPP ? 4u :
query.depth == HD_TEXTURE_DEPTH_8BPP ? 2u : 1u;
std::vector<std::pair<unsigned, unsigned>> u_ranges;
std::vector<std::pair<unsigned, unsigned>> v_ranges;
if (query.u_first <= query.u_last)
u_ranges.push_back({query.u_first, query.u_last});
else {
u_ranges.push_back({query.u_first, 255});
u_ranges.push_back({0, query.u_last});
}
if (query.v_first <= query.v_last)
v_ranges.push_back({query.v_first, query.v_last});
else {
v_ranges.push_back({query.v_first, 255});
v_ranges.push_back({0, query.v_last});
}
std::vector<Rect> result;
for (const auto& vrange : v_ranges) {
for (const auto& urange : u_ranges) {
const unsigned first_word = urange.first / pixels_per_word;
const unsigned last_word = urange.second / pixels_per_word;
std::vector<Rect> pieces = physical_rects(
unsigned{query.page_x} + first_word,
unsigned{query.page_y} + vrange.first,
last_word - first_word + 1,
vrange.second - vrange.first + 1);
result.insert(result.end(), pieces.begin(), pieces.end());
}
}
return result;
}
void fill_entry(const EntryRecord& record, HdTexturePackEntry* entry) {
if (!entry) return;
entry->texture_hash = record.texture_hash;
entry->palette_hash = record.palette_hash;
entry->replacement_path = record.replacement_path.c_str();
entry->logical_path = record.logical_path.c_str();
}
} // namespace
struct HdTexturePack {
std::string asset_root;
std::string replacement_root;
std::unordered_map<uint64_t, EntryRecord> entries;
size_t replacement_file_count = 0;
size_t ambiguous_key_count = 0;
size_t logical_mapping_count = 0;
uint64_t next_upload_serial = 1;
std::vector<Upload> uploads;
std::array<std::vector<uint64_t>, kUploadIndexCells> upload_index;
std::unordered_map<uint64_t, Upload*> upload_by_serial;
/* Conservative broad phase for the GPU primitive hot path. Most scene
* draws target frame-buffer VRAM and cannot affect texture uploads; avoid
* allocating cut/candidate vectors for those draws. This union may stay
* larger after invalidation, but is reset with tracking and therefore can
* only cause extra work, never a missed invalidation. */
Rect upload_bounds{};
DecodeCache decode;
};
unsigned upload_index_cell(unsigned tx, unsigned ty) {
return ty * kUploadIndexCols + tx;
}
void upload_index_clear(HdTexturePack* pack) {
if (!pack) return;
for (auto& bucket : pack->upload_index) bucket.clear();
pack->upload_by_serial.clear();
for (Upload& upload : pack->uploads) upload.index_tiles.clear();
}
void upload_index_remove(HdTexturePack* pack, Upload& upload) {
if (!pack) return;
for (const uint16_t tile : upload.index_tiles) {
auto& bucket = pack->upload_index[tile];
bucket.erase(std::remove(bucket.begin(), bucket.end(), upload.serial),
bucket.end());
}
upload.index_tiles.clear();
pack->upload_by_serial.erase(upload.serial);
}
void upload_index_add(HdTexturePack* pack, Upload& upload) {
if (!pack || upload.fragments.empty() || upload.bounds.width == 0 ||
upload.bounds.height == 0)
return;
const unsigned first_x = upload.bounds.x / kUploadIndexTileSize;
const unsigned first_y = upload.bounds.y / kUploadIndexTileSize;
const unsigned last_x = std::min(
kUploadIndexCols - 1,
(upload.bounds.x + upload.bounds.width - 1) / kUploadIndexTileSize);
const unsigned last_y = std::min(
kUploadIndexRows - 1,
(upload.bounds.y + upload.bounds.height - 1) / kUploadIndexTileSize);
pack->upload_by_serial[upload.serial] = &upload;
upload.index_tiles.reserve((last_x - first_x + 1) *
(last_y - first_y + 1));
for (unsigned ty = first_y; ty <= last_y; ++ty) {
for (unsigned tx = first_x; tx <= last_x; ++tx) {
const unsigned tile = upload_index_cell(tx, ty);
pack->upload_index[tile].push_back(upload.serial);
upload.index_tiles.push_back(static_cast<uint16_t>(tile));
}
}
}
void upload_index_refresh(HdTexturePack* pack, Upload& upload) {
upload_index_remove(pack, upload);
upload_index_add(pack, upload);
}
void upload_index_rebuild(HdTexturePack* pack) {
if (!pack) return;
for (auto& bucket : pack->upload_index) bucket.clear();
pack->upload_by_serial.clear();
pack->upload_bounds = Rect{};
for (Upload& upload : pack->uploads) {
upload.index_tiles.clear();
upload_index_add(pack, upload);
if (pack->upload_bounds.width == 0 || pack->upload_bounds.height == 0) {
pack->upload_bounds = upload.bounds;
} else {
const unsigned right = std::max(
pack->upload_bounds.x + pack->upload_bounds.width,
upload.bounds.x + upload.bounds.width);
const unsigned bottom = std::max(
pack->upload_bounds.y + pack->upload_bounds.height,
upload.bounds.y + upload.bounds.height);
pack->upload_bounds.x = std::min(pack->upload_bounds.x, upload.bounds.x);
pack->upload_bounds.y = std::min(pack->upload_bounds.y, upload.bounds.y);
pack->upload_bounds.width = right - pack->upload_bounds.x;
pack->upload_bounds.height = bottom - pack->upload_bounds.y;
}
}
}
void upload_index_collect(const HdTexturePack* pack,
const std::vector<Rect>& query,
std::vector<uint64_t>* out_serials) {
if (!pack || !out_serials) return;
out_serials->clear();
for (const Rect& rect : query) {
if (rect.width == 0 || rect.height == 0) continue;
const unsigned first_x = rect.x / kUploadIndexTileSize;
const unsigned first_y = rect.y / kUploadIndexTileSize;
const unsigned last_x = std::min(
kUploadIndexCols - 1,
(rect.x + rect.width - 1) / kUploadIndexTileSize);
const unsigned last_y = std::min(
kUploadIndexRows - 1,
(rect.y + rect.height - 1) / kUploadIndexTileSize);
for (unsigned ty = first_y; ty <= last_y; ++ty) {
for (unsigned tx = first_x; tx <= last_x; ++tx) {
const auto& bucket = pack->upload_index[
upload_index_cell(tx, ty)];
out_serials->insert(out_serials->end(), bucket.begin(),
bucket.end());
}
}
}
std::sort(out_serials->begin(), out_serials->end());
out_serials->erase(std::unique(out_serials->begin(), out_serials->end()),
out_serials->end());
}
extern "C" {
int hd_texture_pack_create(const char* explicit_root,
HdTexturePack** out_pack,
char* error,
size_t error_capacity) {
if (out_pack) *out_pack = nullptr;
if (error && error_capacity) error[0] = '\0';
if (!out_pack) {
write_error(error, error_capacity, "out_pack is null");
return 0;
}
try {
const char* selected = explicit_root;
if (!selected || !selected[0]) selected = std::getenv("PSXRECOMP_HD_TEXTURE_ROOT");
if (!selected || !selected[0]) {
write_error(error, error_capacity,
"HD asset root is unset (PSXRECOMP_HD_TEXTURE_ROOT)");
return 0;
}
std::error_code ec;
fs::path input = fs::absolute(fs::path(selected), ec).lexically_normal();
if (ec || !fs::is_directory(input, ec)) {
write_error(error, error_capacity, "HD asset root is not a directory");
return 0;
}
fs::path replacement;
fs::path hashes_ini;
if (directory_has_pack_png(input)) {
replacement = input;
hashes_ini = fs::is_regular_file(input / "Hashes.ini", ec)
? input / "Hashes.ini" : input.parent_path() / "Hashes.ini";
} else if (fs::is_regular_file(input / "Hashes.ini", ec)) {
std::vector<fs::path> children;
for (fs::directory_iterator it(input, ec), end; !ec && it != end; it.increment(ec)) {
if (it->is_directory(ec) &&
ends_with_ci(it->path().filename().string(), "-texture-replacements"))
children.push_back(it->path());
}
std::sort(children.begin(), children.end());
if (children.size() != 1) {
write_error(error, error_capacity,
"pack root must contain exactly one *-texture-replacements directory");
return 0;
}
replacement = children.front();
hashes_ini = input / "Hashes.ini";
} else {
write_error(error, error_capacity,
"no numeric PNGs or Hashes.ini + replacement directory found");
return 0;
}
auto pack = std::make_unique<HdTexturePack>();
pack->asset_root = input.string();
pack->replacement_root = replacement.lexically_normal().string();
std::unordered_map<uint64_t, std::string> mappings;
parse_hashes_ini(hashes_ini, &mappings);
pack->logical_mapping_count = mappings.size();
std::vector<fs::path> files;
for (fs::directory_iterator it(replacement, ec), end; !ec && it != end;
it.increment(ec)) {
if (!it->is_regular_file(ec)) continue;
uint32_t texture_hash = 0;
uint32_t palette_hash = 0;
if (parse_png_filename(it->path(), &texture_hash, &palette_hash))
files.push_back(it->path());
}
if (ec) {
write_error(error, error_capacity, "failed to scan replacement directory");
return 0;
}
std::sort(files.begin(), files.end());
if (files.empty()) {
write_error(error, error_capacity, "replacement directory has no numeric PNGs");
return 0;
}
for (const fs::path& path : files) {
uint32_t texture_hash = 0;
uint32_t palette_hash = 0;
if (!parse_png_filename(path, &texture_hash, &palette_hash)) continue;
++pack->replacement_file_count;
const uint64_t key = make_key(texture_hash, palette_hash);
auto found = pack->entries.find(key);
if (found != pack->entries.end()) {
if (!found->second.ambiguous) {
found->second.ambiguous = true;
++pack->ambiguous_key_count;
}
continue;
}
EntryRecord record;
record.texture_hash = texture_hash;
record.palette_hash = palette_hash;
record.replacement_path = path.lexically_normal().string();
const auto mapping = mappings.find(key);
if (mapping != mappings.end()) record.logical_path = mapping->second;
pack->entries.emplace(key, std::move(record));
}
*out_pack = pack.release();
return 1;
} catch (const std::exception& exception) {
write_error(error, error_capacity, exception.what());
return 0;
}
}
void hd_texture_pack_destroy(HdTexturePack* pack) {
delete pack;
}
void hd_texture_pack_get_info(const HdTexturePack* pack,
HdTexturePackInfo* out_info) {
if (!out_info) return;
std::memset(out_info, 0, sizeof(*out_info));
if (!pack) return;
out_info->asset_root = pack->asset_root.c_str();
out_info->replacement_root = pack->replacement_root.c_str();
out_info->replacement_file_count = pack->replacement_file_count;
out_info->unique_key_count = pack->entries.size() - pack->ambiguous_key_count;
out_info->ambiguous_key_count = pack->ambiguous_key_count;
out_info->logical_mapping_count = pack->logical_mapping_count;
}
int hd_texture_pack_lookup(const HdTexturePack* pack,
uint32_t texture_hash,
uint32_t palette_hash,
HdTexturePackEntry* out_entry) {
if (out_entry) std::memset(out_entry, 0, sizeof(*out_entry));
if (!pack) return HD_TEXTURE_LOOKUP_ERROR;
const auto found = pack->entries.find(make_key(texture_hash, palette_hash));
if (found == pack->entries.end()) return HD_TEXTURE_LOOKUP_NONE;
if (found->second.ambiguous) return HD_TEXTURE_LOOKUP_AMBIGUOUS;
fill_entry(found->second, out_entry);
return HD_TEXTURE_LOOKUP_FOUND;
}
uint32_t hd_texture_crc32_words_le(const uint16_t* words, size_t word_count) {
if (!words && word_count != 0) return 0;
uint32_t crc = 0xFFFFFFFFu;
for (size_t i = 0; i < word_count; ++i) {
crc = crc_byte(crc, static_cast<uint8_t>(words[i] & 0xFFu));
crc = crc_byte(crc, static_cast<uint8_t>(words[i] >> 8));
}
return crc ^ 0xFFFFFFFFu;
}
uint32_t hd_texture_hash_clut(const uint16_t* vram,
size_t vram_word_count,
uint16_t clut_x,
uint16_t clut_y,
uint8_t depth) {
if (depth == HD_TEXTURE_DEPTH_16BPP) return 0;
if (!vram || vram_word_count < kVramWords) return 0;
const unsigned count = depth == HD_TEXTURE_DEPTH_4BPP ? 16u :
depth == HD_TEXTURE_DEPTH_8BPP ? 256u : 0u;
if (count == 0) return 0;
std::array<uint16_t, 256> palette{};
const unsigned y = clut_y & (kVramHeight - 1);
for (unsigned i = 0; i < count; ++i)
palette[i] = vram[y * kVramWidth + ((unsigned{clut_x} + i) &
(kVramWidth - 1))];
return hd_texture_crc32_words_le(palette.data(), count);
}
void hd_texture_pack_invalidate(HdTexturePack* pack,
uint16_t x,
uint16_t y,
uint16_t width_words,
uint16_t height) {
if (!pack || width_words == 0 || height == 0 ||
width_words > kVramWidth || height > kVramHeight)
return;
bool erased_upload = false;
if (pack->upload_bounds.width == 0 || pack->upload_bounds.height == 0)
return;
if ((unsigned{x} + width_words <= kVramWidth) &&
(unsigned{y} + height <= kVramHeight)) {
const Rect cut{unsigned{x}, unsigned{y}, width_words, height};
if (!intersects(pack->upload_bounds, cut)) return;
}
const std::vector<Rect> cuts = physical_rects(x, y, width_words, height);
std::vector<uint64_t> candidate_serials;
upload_index_collect(pack, cuts, &candidate_serials);
for (const uint64_t serial : candidate_serials) {
auto indexed = pack->upload_by_serial.find(serial);
if (indexed == pack->upload_by_serial.end() || !indexed->second)
continue;
Upload& upload = *indexed->second;
for (const Rect& cut : cuts) {
/* Most primitives are outside every tracked upload. The union is
* conservative, so this can only skip work that is provably
* unrelated; individual fragments remain the source of truth. */
if (!intersects(upload.bounds, cut)) continue;
std::vector<Fragment> next;
next.reserve(upload.fragments.size() + 4);
for (const Fragment& fragment : upload.fragments) {
if (!intersects(fragment.rect, cut)) {
next.push_back(fragment);
continue;
}
std::vector<Fragment> pieces = subtract_fragment(fragment, cut);
next.insert(next.end(), pieces.begin(), pieces.end());
}
upload.fragments.swap(next);
upload.bounds = fragment_bounds(upload.fragments);
if (upload.fragments.empty()) {
upload_index_remove(pack, upload);
} else {
upload_index_refresh(pack, upload);
}
}
}
const auto old_size = pack->uploads.size();
pack->uploads.erase(
std::remove_if(pack->uploads.begin(), pack->uploads.end(),
[](const Upload& upload) { return upload.fragments.empty(); }),
pack->uploads.end());
erased_upload = old_size != pack->uploads.size();
/* Vector erasure can move surviving Upload objects, invalidating the
* pointer map. Rebuild only on this uncommon path; ordinary primitive
* invalidation updates only the few intersecting uploads. */
if (erased_upload) upload_index_rebuild(pack);
}
int hd_texture_pack_track_upload(HdTexturePack* pack,
uint16_t x,
uint16_t y,
uint16_t width_words,
uint16_t height,
const uint16_t* words,
size_t word_count,
uint32_t* out_texture_hash) {
if (out_texture_hash) *out_texture_hash = 0;
const size_t required = size_t{width_words} * height;
if (!pack || !words || width_words == 0 || height == 0 ||
width_words > kVramWidth || height > kVramHeight || word_count < required)
return 0;
const uint32_t hash = hd_texture_crc32_words_le(words, required);
hd_texture_pack_invalidate(pack, x, y, width_words, height);
Upload upload;
upload.serial = pack->next_upload_serial++;
upload.hash = hash;
upload.width = width_words;
upload.height = height;
upload.fragments = physical_fragments(x, y, width_words, height);
upload.bounds = fragment_bounds(upload.fragments);
if (pack->upload_bounds.width == 0 || pack->upload_bounds.height == 0) {
pack->upload_bounds = upload.bounds;
} else {
const unsigned right = std::max(
pack->upload_bounds.x + pack->upload_bounds.width,
upload.bounds.x + upload.bounds.width);
const unsigned bottom = std::max(
pack->upload_bounds.y + pack->upload_bounds.height,
upload.bounds.y + upload.bounds.height);
pack->upload_bounds.x = std::min(pack->upload_bounds.x, upload.bounds.x);
pack->upload_bounds.y = std::min(pack->upload_bounds.y, upload.bounds.y);
pack->upload_bounds.width = right - pack->upload_bounds.x;
pack->upload_bounds.height = bottom - pack->upload_bounds.y;
}
pack->uploads.push_back(std::move(upload));
/* A push may reallocate the vector, so refresh all broad-phase pointers
* after adding an upload. Upload creation is far less frequent than GPU
* primitive submission. */
upload_index_rebuild(pack);
if (out_texture_hash) *out_texture_hash = hash;
return 1;
}
void hd_texture_pack_reset_tracking(HdTexturePack* pack) {
if (pack) {
pack->uploads.clear();
upload_index_clear(pack);
pack->upload_bounds = Rect{};
}
}
int hd_texture_pack_tracking_state_save(const HdTexturePack* pack,
uint8_t** out_data,
size_t* out_size) {
if (!out_data || !out_size) return 0;
*out_data = nullptr;
*out_size = 0;
try {
const uint64_t next_serial = pack ? pack->next_upload_serial : 1;
const size_t upload_count = pack ? pack->uploads.size() : 0;
if (next_serial == 0 || upload_count > kMaxTrackingStateUploads)
return 0;
size_t fragment_count = 0;
if (pack) {
for (const Upload& upload : pack->uploads) {
if (upload.serial == 0 || upload.serial >= next_serial ||
upload.width == 0 || upload.height == 0 ||
upload.width > kVramWidth || upload.height > kVramHeight ||
upload.fragments.empty())
return 0;
if (upload.fragments.size() >
kMaxTrackingStateFragments - fragment_count)
return 0;
fragment_count += upload.fragments.size();
for (const Fragment& fragment : upload.fragments)
if (!valid_fragment(upload, fragment)) return 0;
}
}
if (upload_count >
(std::numeric_limits<size_t>::max() - kTrackingStateHeaderBytes) /
kTrackingStateUploadBytes ||
fragment_count >
(std::numeric_limits<size_t>::max() - kTrackingStateHeaderBytes -
upload_count * kTrackingStateUploadBytes) /
kTrackingStateFragmentBytes)
return 0;
const size_t bytes = kTrackingStateHeaderBytes +
upload_count * kTrackingStateUploadBytes +
fragment_count * kTrackingStateFragmentBytes;
if (bytes > kMaxTrackingStateBytes) return 0;
std::vector<uint8_t> wire;
wire.reserve(bytes);
append_u32_le(wire, kTrackingStateMagic);
append_u32_le(wire, kTrackingStateVersion);
append_u64_le(wire, next_serial);
append_u32_le(wire, static_cast<uint32_t>(upload_count));
append_u32_le(wire, 0);
if (pack) {
for (const Upload& upload : pack->uploads) {
append_u64_le(wire, upload.serial);
append_u32_le(wire, upload.hash);
append_u16_le(wire, upload.width);
append_u16_le(wire, upload.height);
append_u32_le(wire,
static_cast<uint32_t>(upload.fragments.size()));
for (const Fragment& fragment : upload.fragments) {
append_u16_le(wire, static_cast<uint16_t>(fragment.rect.x));
append_u16_le(wire, static_cast<uint16_t>(fragment.rect.y));
append_u16_le(wire,
static_cast<uint16_t>(fragment.rect.width));
append_u16_le(wire,
static_cast<uint16_t>(fragment.rect.height));
append_u16_le(wire,
static_cast<uint16_t>(fragment.source_x));
append_u16_le(wire,
static_cast<uint16_t>(fragment.source_y));
}
}
}
if (wire.size() != bytes) return 0;
uint8_t* output = static_cast<uint8_t*>(std::malloc(bytes));
if (!output) return 0;
std::memcpy(output, wire.data(), bytes);
*out_data = output;
*out_size = bytes;
return 1;
} catch (...) {
return 0;
}
}
int hd_texture_pack_tracking_state_check(const uint8_t* data, size_t size) {
try {
uint64_t next_serial = 0;
return parse_tracking_state(data, size, &next_serial, nullptr) ? 1 : 0;
} catch (...) {
return 0;
}
}
int hd_texture_pack_tracking_state_load(HdTexturePack* pack,
const uint8_t* data,
size_t size) {
try {
uint64_t next_serial = 0;
std::vector<Upload> uploads;
if (!parse_tracking_state(data, size, &next_serial, &uploads)) return 0;
if (pack) {
pack->next_upload_serial = next_serial;
pack->uploads.swap(uploads);
upload_index_rebuild(pack);
}
return 1;
} catch (...) {
return 0;
}
}
size_t hd_texture_pack_tracking_upload_count(const HdTexturePack* pack) {
return pack ? pack->uploads.size() : 0;
}
int hd_texture_pack_match(HdTexturePack* pack,
const HdTextureDrawQuery* query,
HdTextureMatch* out_match) {
if (out_match) std::memset(out_match, 0, sizeof(*out_match));
if (!pack || !query || query->depth > HD_TEXTURE_DEPTH_16BPP ||
!query->vram || query->vram_word_count < kVramWords)
return HD_TEXTURE_LOOKUP_ERROR;
const std::vector<Rect> wanted = query_rectangles(*query);
if (wanted.empty()) return HD_TEXTURE_LOOKUP_ERROR;
const uint32_t palette_hash = hd_texture_hash_clut(
query->vram, query->vram_word_count, query->clut_x, query->clut_y,
query->depth);
std::vector<uint64_t> candidate_serials;
upload_index_collect(pack, wanted, &candidate_serials);
const Upload* candidate = nullptr;
const EntryRecord* candidate_entry = nullptr;
for (const uint64_t serial : candidate_serials) {
const auto indexed = pack->upload_by_serial.find(serial);
if (indexed == pack->upload_by_serial.end() || !indexed->second)
continue;
const Upload& upload = *indexed->second;
const auto record = pack->entries.find(make_key(upload.hash, palette_hash));
if (record == pack->entries.end()) continue;
if (!covered_by_upload(upload, wanted)) continue;
if (record->second.ambiguous) return HD_TEXTURE_LOOKUP_AMBIGUOUS;
if (candidate) return HD_TEXTURE_LOOKUP_AMBIGUOUS;
candidate = &upload;
candidate_entry = &record->second;
}
if (!candidate || !candidate_entry) return HD_TEXTURE_LOOKUP_NONE;
if (out_match) {
fill_entry(*candidate_entry, &out_match->entry);
out_match->upload_serial = candidate->serial;
out_match->upload_width_words = candidate->width;
out_match->upload_height = candidate->height;
const unsigned pixels_per_word = query->depth == HD_TEXTURE_DEPTH_4BPP ? 4u :
query->depth == HD_TEXTURE_DEPTH_8BPP ? 2u : 1u;
const unsigned first_x = (unsigned{query->page_x} +
query->u_first / pixels_per_word) &
(kVramWidth - 1);
const unsigned first_y = (unsigned{query->page_y} + query->v_first) &
(kVramHeight - 1);
for (const Fragment& fragment : candidate->fragments) {
if (contains_point(fragment.rect, first_x, first_y)) {
out_match->source_word_x = static_cast<uint16_t>(
fragment.source_x + first_x - fragment.rect.x);
out_match->source_y = static_cast<uint16_t>(
fragment.source_y + first_y - fragment.rect.y);
break;
}
}
}
return HD_TEXTURE_LOOKUP_FOUND;
}
int hd_texture_pack_match_draw(HdTexturePack* pack,
uint16_t texpage,
uint16_t clut_x,
uint16_t clut_y,
uint8_t u_first,
uint8_t u_last,
uint8_t v_first,
uint8_t v_last,
const uint16_t* vram,
size_t vram_word_count,
HdTextureMatch* out_match) {
const uint8_t depth = static_cast<uint8_t>((texpage >> 7) & 3u);
if (depth > HD_TEXTURE_DEPTH_16BPP) {
if (out_match) std::memset(out_match, 0, sizeof(*out_match));
return HD_TEXTURE_LOOKUP_ERROR;
}
HdTextureDrawQuery query{};
query.page_x = static_cast<uint16_t>((texpage & 0xFu) * 64u);
query.page_y = static_cast<uint16_t>(((texpage >> 4) & 1u) * 256u);
query.depth = depth;
query.u_first = u_first; query.u_last = u_last;
query.v_first = v_first; query.v_last = v_last;
query.clut_x = clut_x; query.clut_y = clut_y;
query.vram = vram; query.vram_word_count = vram_word_count;
return hd_texture_pack_match(pack, &query, out_match);
}
void hd_texture_pack_set_decode_budget(HdTexturePack* pack,
size_t budget_bytes) {
if (!pack) return;
std::lock_guard<std::mutex> lock(pack->decode.mutex);
pack->decode.budget = budget_bytes;
evict_decode_cache(pack->decode);
}
int hd_texture_pack_request_decode(HdTexturePack* pack,
uint32_t texture_hash,
uint32_t palette_hash) {
#ifdef HD_TEXTURE_PACK_DISABLE_PNG_DECODE
(void)pack; (void)texture_hash; (void)palette_hash;
return HD_TEXTURE_LOOKUP_ERROR;
#else
if (!pack) return HD_TEXTURE_LOOKUP_ERROR;
const uint64_t key = make_key(texture_hash, palette_hash);
const auto record = pack->entries.find(key);
if (record == pack->entries.end() || record->second.ambiguous)
return HD_TEXTURE_LOOKUP_ERROR;
std::lock_guard<std::mutex> lock(pack->decode.mutex);
auto found = pack->decode.items.find(key);
if (found != pack->decode.items.end()) {
if (found->second.state == DecodeState::Ready) {
found->second.last_used = ++pack->decode.tick;
return HD_TEXTURE_LOOKUP_FOUND;
}
return found->second.state == DecodeState::Failed
? HD_TEXTURE_LOOKUP_ERROR : HD_TEXTURE_LOOKUP_NONE;
}
if (pack->decode.budget == 0) return HD_TEXTURE_LOOKUP_ERROR;
if (pack->decode.queue.size() >= kMaxDecodeQueue)
return HD_TEXTURE_LOOKUP_NONE;
DecodeItem item;
item.path = record->second.replacement_path;
pack->decode.items.emplace(key, std::move(item));
pack->decode.queue.push_back(key);
if (!pack->decode.started) {
pack->decode.started = true;
pack->decode.worker = std::thread(decode_worker, &pack->decode);
}
pack->decode.wake.notify_one();
return HD_TEXTURE_LOOKUP_NONE;
#endif
}
int hd_texture_pack_acquire_decoded(HdTexturePack* pack,
uint32_t texture_hash,
uint32_t palette_hash,
HdTexturePixels* out_pixels) {
if (out_pixels) std::memset(out_pixels, 0, sizeof(*out_pixels));
if (!pack || !out_pixels) return HD_TEXTURE_LOOKUP_ERROR;
std::lock_guard<std::mutex> lock(pack->decode.mutex);
const auto found = pack->decode.items.find(make_key(texture_hash, palette_hash));
if (found == pack->decode.items.end()) return HD_TEXTURE_LOOKUP_NONE;
if (found->second.state == DecodeState::Failed) return HD_TEXTURE_LOOKUP_ERROR;
if (found->second.state != DecodeState::Ready || !found->second.image)
return HD_TEXTURE_LOOKUP_NONE;
PixelLease* lease = new (std::nothrow) PixelLease{found->second.image};
if (!lease) return HD_TEXTURE_LOOKUP_ERROR;
found->second.last_used = ++pack->decode.tick;
out_pixels->rgba = lease->image->rgba.data();
out_pixels->width = lease->image->width;
out_pixels->height = lease->image->height;
out_pixels->stride = lease->image->width * 4;
out_pixels->lease = lease;
return HD_TEXTURE_LOOKUP_FOUND;
}
void hd_texture_pixels_release(HdTexturePixels* pixels) {
if (!pixels) return;
delete static_cast<PixelLease*>(pixels->lease);
std::memset(pixels, 0, sizeof(*pixels));
}
} // extern "C"
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