M include/mgba/core/core.h → include/mgba/core/core.h

@@ -70,7 +70,7 @@ void (*setSync)(struct mCore*, struct mCoreSync*);
 	void (*loadConfig)(struct mCore*, const struct mCoreConfig*);
 	void (*reloadConfigOption)(struct mCore*, const char* option, const struct mCoreConfig*);
 
-	void (*desiredVideoDimensions)(struct mCore*, unsigned* width, unsigned* height);
+	void (*desiredVideoDimensions)(const struct mCore*, unsigned* width, unsigned* height);
 	void (*setVideoBuffer)(struct mCore*, color_t* buffer, size_t stride);
 	void (*setVideoGLTex)(struct mCore*, unsigned texid);
 

M src/gb/core.c → src/gb/core.c

@@ -277,8 +277,8 @@ return;
 	}
 }
 
-static void _GBCoreDesiredVideoDimensions(struct mCore* core, unsigned* width, unsigned* height) {
-	struct GB* gb = core->board;
+static void _GBCoreDesiredVideoDimensions(const struct mCore* core, unsigned* width, unsigned* height) {
+	const struct GB* gb = core->board;
 	if (gb && (!(gb->model & GB_MODEL_SGB) || !gb->video.sgbBorders)) {
 		*width = GB_VIDEO_HORIZONTAL_PIXELS;
 		*height = GB_VIDEO_VERTICAL_PIXELS;

M src/gba/core.c → src/gba/core.c

@@ -388,9 +388,9 @@ }
 	}
 }
 
-static void _GBACoreDesiredVideoDimensions(struct mCore* core, unsigned* width, unsigned* height) {
+static void _GBACoreDesiredVideoDimensions(const struct mCore* core, unsigned* width, unsigned* height) {
 #if defined(BUILD_GLES2) || defined(BUILD_GLES3)
-	struct GBACore* gbacore = (struct GBACore*) core;
+	const struct GBACore* gbacore = (const struct GBACore*) core;
 	int scale = gbacore->glRenderer.scale;
 #else
 	UNUSED(core);