board/io4.c: add configuration section to enable/disable emulation

board/config.c

@@ -31,3 +31,11 @@ void aime_config_load(struct aime_config *cfg, const wchar_t *filename)
     aime_dll_config_load(&cfg->dll, filename);
     cfg->enable = GetPrivateProfileIntW(L"aime", L"enable", 1, filename);
 }
+
+void io4_config_load(struct io4_config *cfg, const wchar_t *filename)
+{
+    assert(cfg != NULL);
+    assert(filename != NULL);
+
+    cfg->enable = GetPrivateProfileIntW(L"io4", L"enable", 1, filename);
+}

board/config.h

@@ -3,6 +3,8 @@
 #include <stdbool.h>
 #include <stddef.h>
 
+#include "board/io4.h"
 #include "board/sg-reader.h"
 
 void aime_config_load(struct aime_config *cfg, const wchar_t *filename);
+void io4_config_load(struct io4_config *cfg, const wchar_t *filename);

board/io4.c

@@ -8,6 +8,7 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include "board/config.h"
 #include "board/guid.h"
 #include "board/io4.h"
 
@@ -97,12 +98,20 @@ static uint8_t io4_system_status;
 static const struct io4_ops *io4_ops;
 static void *io4_ops_ctx;
 
-HRESULT io4_hook_init(const struct io4_ops *ops, void *ctx)
+HRESULT io4_hook_init(
+        const struct io4_config *cfg,
+        const struct io4_ops *ops,
+        void *ctx)
 {
     HRESULT hr;
 
+    assert(cfg != NULL);
     assert(ops != NULL);
 
+    if (!cfg->enable) {
+        return S_FALSE;
+    }
+
     async_init(&io4_async, NULL);
 
     hr = iohook_open_nul_fd(&io4_fd);

board/io4.h

@@ -11,6 +11,10 @@ enum {
     IO4_BUTTON_SERVICE  = 1 << 6,
 };
 
+struct io4_config {
+    bool enable;
+};
+
 struct io4_state {
     uint16_t adcs[8];
     uint16_t spinners[4];
@@ -22,4 +26,7 @@ struct io4_ops {
     HRESULT (*poll)(void *ctx, struct io4_state *state);
 };
 
-HRESULT io4_hook_init(const struct io4_ops *ops, void *ctx);
+HRESULT io4_hook_init(
+        const struct io4_config *cfg,
+        const struct io4_ops *ops,
+        void *ctx);

mu3hook/config.c

@@ -37,6 +37,7 @@ void mu3_hook_config_load(
     platform_config_load(&cfg->platform, filename);
     aime_config_load(&cfg->aime, filename);
     dvd_config_load(&cfg->dvd, filename);
+    io4_config_load(&cfg->io4, filename);
     gfx_config_load(&cfg->gfx, filename);
     mu3_dll_config_load(&cfg->dll, filename);
 }

mu3hook/config.h

@@ -15,6 +15,7 @@ struct mu3_hook_config {
     struct platform_config platform;
     struct aime_config aime;
     struct dvd_config dvd;
+    struct io4_config io4;
     struct gfx_config gfx;
     struct mu3_dll_config dll;
 };

mu3hook/dllmain.c

@@ -71,7 +71,7 @@ static DWORD CALLBACK mu3_pre_startup(void)
         goto fail;
     }
 
-    hr = mu3_io4_hook_init();
+    hr = mu3_io4_hook_init(&mu3_hook_cfg.io4);
 
     if (FAILED(hr)) {
         goto fail;

mu3hook/io4.c

@@ -16,13 +16,13 @@ static const struct io4_ops mu3_io4_ops = {
     .poll = mu3_io4_poll,
 };
 
-HRESULT mu3_io4_hook_init(void)
+HRESULT mu3_io4_hook_init(const struct io4_config *cfg)
 {
     HRESULT hr;
 
     assert(mu3_dll.init != NULL);
 
-    hr = io4_hook_init(&mu3_io4_ops, NULL);
+    hr = io4_hook_init(cfg, &mu3_io4_ops, NULL);
 
     if (FAILED(hr)) {
         return hr;

mu3hook/io4.h

@@ -2,4 +2,6 @@
 
 #include <windows.h>
 
-HRESULT mu3_io4_hook_init(void);
+#include "board/io4.h"
+
+HRESULT mu3_io4_hook_init(const struct io4_config *cfg);