refactor all common parts and games

common/board/aime-dll.c

@@ -0,0 +1,112 @@
+#include <windows.h>
+
+#include <assert.h>
+#include <stdlib.h>
+
+#include "board/aime-dll.h"
+
+#include "util/dll-bind.h"
+#include "util/dprintf.h"
+
+const struct dll_bind_sym aime_dll_syms[] = {
+    {
+        .sym = "aime_io_init",
+        .off = offsetof(struct aime_dll, init),
+    }, {
+        .sym = "aime_io_nfc_poll",
+        .off = offsetof(struct aime_dll, nfc_poll),
+    }, {
+        .sym = "aime_io_nfc_get_aime_id",
+        .off = offsetof(struct aime_dll, nfc_get_aime_id),
+    }, {
+        .sym = "aime_io_nfc_get_felica_id",
+        .off = offsetof(struct aime_dll, nfc_get_felica_id),
+    }, {
+        .sym = "aime_io_led_set_color",
+        .off = offsetof(struct aime_dll, led_set_color),
+    }
+};
+
+struct aime_dll aime_dll;
+
+// Copypasta DLL binding and diagnostic message boilerplate.
+// Not much of this lends itself to being easily factored out. Also there
+// will be a lot of API-specific branching code here eventually as new API
+// versions get defined, so even though these functions all look the same
+// now this won't remain the case forever.
+
+HRESULT aime_dll_init(const struct aime_dll_config *cfg, HINSTANCE self)
+{
+    uint16_t (*get_api_version)(void);
+    const struct dll_bind_sym *sym;
+    HINSTANCE owned;
+    HINSTANCE src;
+    HRESULT hr;
+
+    assert(cfg != NULL);
+    assert(self != NULL);
+
+    if (cfg->path[0] != L'\0') {
+        owned = LoadLibraryW(cfg->path);
+
+        if (owned == NULL) {
+            hr = HRESULT_FROM_WIN32(GetLastError());
+            dprintf("NFC Assembly: Failed to load IO DLL: %lx: %S\n",
+                    hr,
+                    cfg->path);
+
+            goto end;
+        }
+
+        dprintf("NFC Assembly: Using custom IO DLL: %S\n", cfg->path);
+        src = owned;
+    } else {
+        owned = NULL;
+        src = self;
+    }
+
+    get_api_version = (void *) GetProcAddress(src, "aime_io_get_api_version");
+
+    if (get_api_version != NULL) {
+        aime_dll.api_version = get_api_version();
+    } else {
+        aime_dll.api_version = 0x0100;
+        dprintf("Custom IO DLL does not expose aime_io_get_api_version, "
+                "assuming API version 1.0.\n"
+                "Please ask the developer to update their DLL.\n");
+    }
+
+    if (aime_dll.api_version >= 0x0200) {
+        hr = E_NOTIMPL;
+        dprintf("NFC Assembly: Custom IO DLL implements an unsupported "
+                "API version (%#04x). Please update Segatools.\n",
+                aime_dll.api_version);
+
+        goto end;
+    }
+
+    sym = aime_dll_syms;
+    hr = dll_bind(&aime_dll, src, &sym, _countof(aime_dll_syms));
+
+    if (FAILED(hr)) {
+        if (src != self) {
+            dprintf("NFC Assembly: Custom IO DLL does not provide function "
+                    "\"%s\". Please contact your IO DLL's developer for "
+                    "further assistance.\n",
+                    sym->sym);
+
+            goto end;
+        } else {
+            dprintf("Internal error: could not reflect \"%s\"\n", sym->sym);
+        }
+    }
+
+    owned = NULL;
+
+end:
+    if (owned != NULL) {
+        FreeLibrary(owned);
+    }
+
+    return hr;
+}