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_EXITING,
 22	THREAD_SHUTDOWN
 23};
 24
 25struct GBASync {
 26	int videoFramePending;
 27	int videoFrameWait;
 28	int videoFrameSkip;
 29	int videoFrameOn;
 30	Mutex videoFrameMutex;
 31	Condition videoFrameAvailableCond;
 32	Condition videoFrameRequiredCond;
 33
 34	int audioWait;
 35	Condition audioRequiredCond;
 36	Mutex audioBufferMutex;
 37};
 38
 39struct GBAThread {
 40	// Output
 41	enum ThreadState state;
 42	struct GBA* gba;
 43	struct ARMCore* cpu;
 44
 45	// Input
 46	struct GBAVideoRenderer* renderer;
 47	struct GBASIODriverSet sioDrivers;
 48	struct ARMDebugger* debugger;
 49	int fd;
 50	int biosFd;
 51	int patchFd;
 52	const char* fname;
 53	int activeKeys;
 54	int frameskip;
 55
 56	// Threading state
 57	Thread thread;
 58
 59	Mutex stateMutex;
 60	Condition stateCond;
 61	enum ThreadState savedState;
 62
 63	GBALogHandler logHandler;
 64	int logLevel;
 65	ThreadCallback startCallback;
 66	ThreadCallback cleanCallback;
 67	ThreadCallback frameCallback;
 68	void* userData;
 69
 70	struct GBASync sync;
 71
 72	int rewindBufferSize;
 73	int rewindBufferCapacity;
 74	int rewindBufferInterval;
 75	int rewindBufferNext;
 76	struct GBASerializedState** rewindBuffer;
 77	int rewindBufferWriteOffset;
 78};
 79
 80void GBAMapOptionsToContext(struct StartupOptions*, struct GBAThread*);
 81
 82int GBAThreadStart(struct GBAThread* threadContext);
 83int GBAThreadHasStarted(struct GBAThread* threadContext);
 84void GBAThreadEnd(struct GBAThread* threadContext);
 85void GBAThreadJoin(struct GBAThread* threadContext);
 86
 87void GBAThreadTryPause(struct GBAThread* threadContext);
 88void GBAThreadContinue(struct GBAThread* threadContext);
 89
 90void GBAThreadPause(struct GBAThread* threadContext);
 91void GBAThreadUnpause(struct GBAThread* threadContext);
 92int GBAThreadIsPaused(struct GBAThread* threadContext);
 93void GBAThreadTogglePause(struct GBAThread* threadContext);
 94struct GBAThread* GBAThreadGetContext(void);
 95
 96void GBASyncPostFrame(struct GBASync* sync);
 97int GBASyncWaitFrameStart(struct GBASync* sync, int frameskip);
 98void GBASyncWaitFrameEnd(struct GBASync* sync);
 99int GBASyncDrawingFrame(struct GBASync* sync);
100
101void GBASyncProduceAudio(struct GBASync* sync, int wait);
102void GBASyncLockAudio(struct GBASync* sync);
103void GBASyncConsumeAudio(struct GBASync* sync);
104
105#endif