1#ifndef GBA_THREAD_H
  2#define GBA_THREAD_H
  3
  4#include "common.h"
  5
  6#include "gba.h"
  7
  8#include "util/threading.h"
  9#include "platform/commandline.h"
 10
 11struct GBAThread;
 12typedef void (*ThreadCallback)(struct GBAThread* threadContext);
 13
 14enum ThreadState {
 15	THREAD_INITIALIZED = -1,
 16	THREAD_RUNNING = 0,
 17	THREAD_INTERRUPTED,
 18	THREAD_INTERRUPTING,
 19	THREAD_PAUSED,
 20	THREAD_PAUSING,
 21	THREAD_RESETING,
 22	THREAD_EXITING,
 23	THREAD_SHUTDOWN
 24};
 25
 26struct GBASync {
 27	int videoFramePending;
 28	int videoFrameWait;
 29	int videoFrameSkip;
 30	bool videoFrameOn;
 31	Mutex videoFrameMutex;
 32	Condition videoFrameAvailableCond;
 33	Condition videoFrameRequiredCond;
 34
 35	int audioWait;
 36	Condition audioRequiredCond;
 37	Mutex audioBufferMutex;
 38};
 39
 40struct GBAThread {
 41	// Output
 42	enum ThreadState state;
 43	struct GBA* gba;
 44	struct ARMCore* cpu;
 45
 46	// Input
 47	struct GBAVideoRenderer* renderer;
 48	struct GBASIODriverSet sioDrivers;
 49	struct ARMDebugger* debugger;
 50	int fd;
 51	int biosFd;
 52	int patchFd;
 53	const char* fname;
 54	int activeKeys;
 55	int frameskip;
 56
 57	// Threading state
 58	Thread thread;
 59
 60	Mutex stateMutex;
 61	Condition stateCond;
 62	enum ThreadState savedState;
 63
 64	GBALogHandler logHandler;
 65	int logLevel;
 66	ThreadCallback startCallback;
 67	ThreadCallback cleanCallback;
 68	ThreadCallback frameCallback;
 69	void* userData;
 70
 71	struct GBASync sync;
 72
 73	int rewindBufferSize;
 74	int rewindBufferCapacity;
 75	int rewindBufferInterval;
 76	int rewindBufferNext;
 77	struct GBASerializedState** rewindBuffer;
 78	int rewindBufferWriteOffset;
 79};
 80
 81void GBAMapOptionsToContext(struct StartupOptions*, struct GBAThread*);
 82
 83bool GBAThreadStart(struct GBAThread* threadContext);
 84bool GBAThreadHasStarted(struct GBAThread* threadContext);
 85void GBAThreadEnd(struct GBAThread* threadContext);
 86void GBAThreadReset(struct GBAThread* threadContext);
 87void GBAThreadJoin(struct GBAThread* threadContext);
 88
 89void GBAThreadInterrupt(struct GBAThread* threadContext);
 90void GBAThreadContinue(struct GBAThread* threadContext);
 91
 92void GBAThreadPause(struct GBAThread* threadContext);
 93void GBAThreadUnpause(struct GBAThread* threadContext);
 94bool GBAThreadIsPaused(struct GBAThread* threadContext);
 95void GBAThreadTogglePause(struct GBAThread* threadContext);
 96struct GBAThread* GBAThreadGetContext(void);
 97
 98void GBASyncPostFrame(struct GBASync* sync);
 99bool GBASyncWaitFrameStart(struct GBASync* sync, int frameskip);
100void GBASyncWaitFrameEnd(struct GBASync* sync);
101bool GBASyncDrawingFrame(struct GBASync* sync);
102
103void GBASyncProduceAudio(struct GBASync* sync, int wait);
104void GBASyncLockAudio(struct GBASync* sync);
105void GBASyncConsumeAudio(struct GBASync* sync);
106
107#endif