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);
 13typedef void (*LogHandler)(struct GBAThread*, enum GBALogLevel, const char* format, va_list args);
 14
 15enum ThreadState {
 16	THREAD_INITIALIZED = -1,
 17	THREAD_RUNNING = 0,
 18	THREAD_INTERRUPTED,
 19	THREAD_INTERRUPTING,
 20	THREAD_PAUSED,
 21	THREAD_PAUSING,
 22	THREAD_RESETING,
 23	THREAD_EXITING,
 24	THREAD_SHUTDOWN
 25};
 26
 27struct GBASync {
 28	int videoFramePending;
 29	int videoFrameWait;
 30	int videoFrameSkip;
 31	bool videoFrameOn;
 32	Mutex videoFrameMutex;
 33	Condition videoFrameAvailableCond;
 34	Condition videoFrameRequiredCond;
 35
 36	int audioWait;
 37	Condition audioRequiredCond;
 38	Mutex audioBufferMutex;
 39};
 40
 41struct GBAThread {
 42	// Output
 43	enum ThreadState state;
 44	struct GBA* gba;
 45	struct ARMCore* cpu;
 46
 47	// Input
 48	struct GBAVideoRenderer* renderer;
 49	struct GBASIODriverSet sioDrivers;
 50	struct ARMDebugger* debugger;
 51	struct VDir* gameDir;
 52	struct VDir* stateDir;
 53	struct VFile* rom;
 54	struct VFile* save;
 55	struct VFile* bios;
 56	struct VFile* patch;
 57	const char* fname;
 58	int activeKeys;
 59
 60	// Run-time options
 61	int frameskip;
 62	float fpsTarget;
 63	size_t audioBuffers;
 64
 65	// Threading state
 66	Thread thread;
 67
 68	Mutex stateMutex;
 69	Condition stateCond;
 70	enum ThreadState savedState;
 71
 72	LogHandler logHandler;
 73	int logLevel;
 74	ThreadCallback startCallback;
 75	ThreadCallback cleanCallback;
 76	ThreadCallback frameCallback;
 77	void* userData;
 78
 79	struct GBASync sync;
 80
 81	int rewindBufferSize;
 82	int rewindBufferCapacity;
 83	int rewindBufferInterval;
 84	int rewindBufferNext;
 85	struct GBASerializedState** rewindBuffer;
 86	int rewindBufferWriteOffset;
 87};
 88
 89void GBAMapOptionsToContext(struct StartupOptions*, struct GBAThread*);
 90
 91bool GBAThreadStart(struct GBAThread* threadContext);
 92bool GBAThreadHasStarted(struct GBAThread* threadContext);
 93void GBAThreadEnd(struct GBAThread* threadContext);
 94void GBAThreadReset(struct GBAThread* threadContext);
 95void GBAThreadJoin(struct GBAThread* threadContext);
 96
 97void GBAThreadInterrupt(struct GBAThread* threadContext);
 98void GBAThreadContinue(struct GBAThread* threadContext);
 99
100void GBAThreadPause(struct GBAThread* threadContext);
101void GBAThreadUnpause(struct GBAThread* threadContext);
102bool GBAThreadIsPaused(struct GBAThread* threadContext);
103void GBAThreadTogglePause(struct GBAThread* threadContext);
104void GBAThreadPauseFromThread(struct GBAThread* threadContext);
105struct GBAThread* GBAThreadGetContext(void);
106
107void GBASyncPostFrame(struct GBASync* sync);
108bool GBASyncWaitFrameStart(struct GBASync* sync, int frameskip);
109void GBASyncWaitFrameEnd(struct GBASync* sync);
110bool GBASyncDrawingFrame(struct GBASync* sync);
111
112void GBASyncProduceAudio(struct GBASync* sync, int wait);
113void GBASyncLockAudio(struct GBASync* sync);
114void GBASyncUnlockAudio(struct GBASync* sync);
115void GBASyncConsumeAudio(struct GBASync* sync);
116
117#endif