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	struct VDir* gameDir;
 51	struct VDir* stateDir;
 52	struct VFile* rom;
 53	struct VFile* save;
 54	struct VFile* bios;
 55	struct VFile* patch;
 56	const char* fname;
 57	int activeKeys;
 58	int frameskip;
 59	float fpsTarget;
 60	size_t audioBuffers;
 61
 62	// Threading state
 63	Thread thread;
 64
 65	Mutex stateMutex;
 66	Condition stateCond;
 67	enum ThreadState savedState;
 68
 69	GBALogHandler logHandler;
 70	int logLevel;
 71	ThreadCallback startCallback;
 72	ThreadCallback cleanCallback;
 73	ThreadCallback frameCallback;
 74	void* userData;
 75
 76	struct GBASync sync;
 77
 78	int rewindBufferSize;
 79	int rewindBufferCapacity;
 80	int rewindBufferInterval;
 81	int rewindBufferNext;
 82	struct GBASerializedState** rewindBuffer;
 83	int rewindBufferWriteOffset;
 84};
 85
 86void GBAMapOptionsToContext(struct StartupOptions*, struct GBAThread*);
 87
 88bool GBAThreadStart(struct GBAThread* threadContext);
 89bool GBAThreadHasStarted(struct GBAThread* threadContext);
 90void GBAThreadEnd(struct GBAThread* threadContext);
 91void GBAThreadReset(struct GBAThread* threadContext);
 92void GBAThreadJoin(struct GBAThread* threadContext);
 93
 94void GBAThreadInterrupt(struct GBAThread* threadContext);
 95void GBAThreadContinue(struct GBAThread* threadContext);
 96
 97void GBAThreadPause(struct GBAThread* threadContext);
 98void GBAThreadUnpause(struct GBAThread* threadContext);
 99bool GBAThreadIsPaused(struct GBAThread* threadContext);
100void GBAThreadTogglePause(struct GBAThread* threadContext);
101struct GBAThread* GBAThreadGetContext(void);
102
103void GBASyncPostFrame(struct GBASync* sync);
104bool GBASyncWaitFrameStart(struct GBASync* sync, int frameskip);
105void GBASyncWaitFrameEnd(struct GBASync* sync);
106bool GBASyncDrawingFrame(struct GBASync* sync);
107
108void GBASyncProduceAudio(struct GBASync* sync, int wait);
109void GBASyncLockAudio(struct GBASync* sync);
110void GBASyncUnlockAudio(struct GBASync* sync);
111void GBASyncConsumeAudio(struct GBASync* sync);
112
113#endif