multitap enhancements

runtime/include/psx_lobby_client.h

@@ -62,6 +62,8 @@ typedef struct PsxLobbyMatchCaps {
     int  force_input_relay; /* 0/1 — server input relay (vs P2P) */
     int  force_turn;       /* 0/1 — ICE relay-only (Force TURN for UDP) */
     int  rollback;         /* 0/1 — invent/rollback netplay (default on) */
+    /* DualShock-on-multitap-tap hack (0/1). Host-authoritative for the match. */
+    int  multitap_analog;
     char language[PSX_LOBBY_LANG_LEN];
 } PsxLobbyMatchCaps;
 

runtime/include/sio.h

@@ -84,9 +84,15 @@ void sio_set_legacy_cfg(int enabled);
 int  sio_get_legacy_cfg(void);
 /* 1 when multitap is armed and `logical_slot` is a tap pad (not the lone
  * pad on the opposite console port). SCPH-1070 taps are treated as plain
- * digital controllers (0x41) — DualShock/analog on a tap is not reliable
- * across titles, so host input and SIO type requests are forced digital. */
+ * digital controllers (0x41) by default — DualShock/analog on a tap is not
+ * reliable across titles. Opt in with sio_set_multitap_analog(1) (hack). */
 int  sio_pad_on_multitap(int logical_slot);
+/* Opt-in DualShock-on-tap hack. Off by default. When on, tap seats may
+ * report 0x73 + stick bytes in multitap bulk status (and host/netplay
+ * sampling stops forcing digital). game.toml [controller] multitap_analog /
+ * settings.toml / lobby match_caps may enable this. */
+void sio_set_multitap_analog(int enabled);
+int  sio_get_multitap_analog(void);
 
 /* Update pad button state. Buttons use PS1 convention: 0=pressed, 1=released.
    Bit layout: SELECT, L3, R3, START, UP, RIGHT, DOWN, LEFT,