M src/gba/gba-thread.c → src/gba/gba-thread.c

@@ -291,6 +291,11 @@ ConditionWait(&sync->videoFrameRequiredCond, &sync->videoFrameMutex);
 		}
 	}
 	MutexUnlock(&sync->videoFrameMutex);
+
+	struct GBAThread* thread = GBAThreadGetContext();
+	if (thread->frameCallback) {
+		thread->frameCallback(thread);
+	}
 }
 
 int GBASyncWaitFrameStart(struct GBASync* sync, int frameskip) {

M src/gba/gba-thread.h → src/gba/gba-thread.h

@@ -36,6 +36,7 @@ Condition stateCond;
 
 	ThreadCallback startCallback;
 	ThreadCallback cleanCallback;
+	ThreadCallback frameCallback;
 	void* userData;
 
 	struct GBASync {

M src/platform/sdl/gl-main.c → src/platform/sdl/gl-main.c

@@ -73,6 +73,7 @@ context.sync.videoFrameWait = 0;
 	context.sync.audioWait = 1;
 	context.startCallback = _GBASDLStart;
 	context.cleanCallback = _GBASDLClean;
+	context.frameCallback = 0;
 	context.userData = &renderer;
 	GBAThreadStart(&context);
 

M src/platform/sdl/sdl-events.c → src/platform/sdl/sdl-events.c

@@ -11,12 +11,18 @@ return 0;
 	}
 	SDL_JoystickEventState(SDL_ENABLE);
 	context->joystick = SDL_JoystickOpen(0);
+	SDL_EnableKeyRepeat(SDL_DEFAULT_REPEAT_DELAY, SDL_DEFAULT_REPEAT_INTERVAL);
 	return 1;
 }
 
 void GBASDLDeinitEvents(struct GBASDLEvents* context) {
 	SDL_JoystickClose(context->joystick);
 	SDL_QuitSubSystem(SDL_INIT_JOYSTICK);
+}
+
+static void _pauseAfterFrame(struct GBAThread* context) {
+	context->frameCallback = 0;
+	GBAThreadPause(context);
 }
 
 static void _GBASDLHandleKeypress(struct GBAThread* context, const struct SDL_KeyboardEvent* event) {
@@ -68,6 +74,12 @@ if (event->keysym.mod & KMOD_CTRL) {
 				switch (event->keysym.sym) {
 				case SDLK_p:
 					GBAThreadTogglePause(context);
+					break;
+				case SDLK_n:
+					GBAThreadPause(context);
+					context->frameCallback = _pauseAfterFrame;
+					GBAThreadUnpause(context);
+					break;
 				default:
 					break;
 				}