Add led support for mercuryio.dll

mercuryhook/elisabeth.c

@@ -23,6 +23,7 @@ static void dll_hook_insert_hooks(HMODULE target);
 static FARPROC WINAPI my_GetProcAddress(HMODULE hModule, const char *name);
 static FARPROC (WINAPI *next_GetProcAddress)(HMODULE hModule, const char *name);
 static int my_USBIntLED_Init();
+static int my_USBIntLED_set();
 
 static const struct hook_symbol win32_hooks[] = {
     {
@@ -59,6 +60,10 @@ FARPROC WINAPI my_GetProcAddress(HMODULE hModule, const char *name)
         if (strcmp(name, "USBIntLED_Init") == 0) {
             result = (FARPROC) my_USBIntLED_Init;
         }
+
+        if (strcmp(name, "USBIntLED_set") == 0) {
+            result = (FARPROC) my_USBIntLED_set;
+        }
     }
 
     return result;
@@ -70,3 +75,10 @@ static int my_USBIntLED_Init()
     dprintf("Elisabeth: my_USBIntLED_Init hit!\n");
     return 1;
 }
+
+static int my_USBIntLED_set(int data1, struct led_data data2)
+{
+    assert(mercury_dll.set_leds != NULL);
+    mercury_dll.set_leds(data2);
+    return 1;
+}

mercuryhook/elisabeth.h

@@ -1,3 +1,8 @@
 #pragma once
 
+struct led_data {
+   DWORD unitCount;
+   uint8_t rgba[480 * 4];
+};
+
 HRESULT elisabeth_hook_init();

mercuryhook/mercury-dll.c

@@ -27,6 +27,9 @@ const struct dll_bind_sym mercury_dll_syms[] = {
     }, {
         .sym = "mercury_io_touch_start",
         .off = offsetof(struct mercury_dll, touch_start),
+    }, {
+        .sym = "mercury_io_touch_set_leds",
+        .off = offsetof(struct mercury_dll, set_leds),
     }
 };
 

mercuryhook/mercury-dll.h

@@ -3,6 +3,7 @@
 #include <windows.h>
 
 #include "mercuryio/mercuryio.h"
+#include "mercuryhook/elisabeth.h"
 
 struct mercury_dll {
     uint16_t api_version;
@@ -12,6 +13,7 @@ struct mercury_dll {
     void (*get_gamebtns)(uint8_t *gamebtn);
     HRESULT (*touch_init)(void);
     void (*touch_start)(mercury_io_touch_callback_t callback);
+    void (*set_leds)(struct led_data data);
 };
 
 struct mercury_dll_config {

mercuryhook/mercuryhook.def

@@ -16,5 +16,6 @@ EXPORTS
     mercury_io_get_opbtns
     mercury_io_touch_init
     mercury_io_touch_start
+    mercury_io_touch_set_leds
     mercury_io_init
     mercury_io_poll