1#ifndef GBA_THREAD_H
  2#define GBA_THREAD_H
  3
  4#include "util/common.h"
  5
  6#include "gba.h"
  7#include "gba-input.h"
  8
  9#include "util/threading.h"
 10#include "platform/commandline.h"
 11
 12struct GBAThread;
 13typedef void (*ThreadCallback)(struct GBAThread* threadContext);
 14typedef void (*LogHandler)(struct GBAThread*, enum GBALogLevel, const char* format, va_list args);
 15
 16enum ThreadState {
 17	THREAD_INITIALIZED = -1,
 18	THREAD_RUNNING = 0,
 19	THREAD_INTERRUPTED,
 20	THREAD_INTERRUPTING,
 21	THREAD_PAUSED,
 22	THREAD_PAUSING,
 23	THREAD_RESETING,
 24	THREAD_EXITING,
 25	THREAD_SHUTDOWN
 26};
 27
 28struct GBASync {
 29	int videoFramePending;
 30	int videoFrameWait;
 31	int videoFrameSkip;
 32	bool videoFrameOn;
 33	Mutex videoFrameMutex;
 34	Condition videoFrameAvailableCond;
 35	Condition videoFrameRequiredCond;
 36
 37	int audioWait;
 38	Condition audioRequiredCond;
 39	Mutex audioBufferMutex;
 40};
 41
 42struct GBAAVStream {
 43	void (*postVideoFrame)(struct GBAAVStream*, struct GBAVideoRenderer* renderer);
 44	void (*postAudioFrame)(struct GBAAVStream*, int32_t left, int32_t right);
 45};
 46
 47struct GBAThread {
 48	// Output
 49	enum ThreadState state;
 50	struct GBA* gba;
 51	struct ARMCore* cpu;
 52
 53	// Input
 54	struct GBAVideoRenderer* renderer;
 55	struct GBASIODriverSet sioDrivers;
 56	struct ARMDebugger* debugger;
 57	struct VDir* gameDir;
 58	struct VDir* stateDir;
 59	struct VFile* rom;
 60	struct VFile* save;
 61	struct VFile* bios;
 62	struct VFile* patch;
 63	const char* fname;
 64	int activeKeys;
 65	struct GBAInputMap inputMap;
 66	struct GBAAVStream* stream;
 67
 68	// Run-time options
 69	int frameskip;
 70	float fpsTarget;
 71	size_t audioBuffers;
 72
 73	// Threading state
 74	Thread thread;
 75
 76	Mutex stateMutex;
 77	Condition stateCond;
 78	enum ThreadState savedState;
 79
 80	LogHandler logHandler;
 81	int logLevel;
 82	ThreadCallback startCallback;
 83	ThreadCallback cleanCallback;
 84	ThreadCallback frameCallback;
 85	void* userData;
 86
 87	struct GBASync sync;
 88
 89	int rewindBufferSize;
 90	int rewindBufferCapacity;
 91	int rewindBufferInterval;
 92	int rewindBufferNext;
 93	struct GBASerializedState** rewindBuffer;
 94	int rewindBufferWriteOffset;
 95};
 96
 97void GBAMapOptionsToContext(struct StartupOptions*, struct GBAThread*);
 98
 99bool GBAThreadStart(struct GBAThread* threadContext);
100bool GBAThreadHasStarted(struct GBAThread* threadContext);
101void GBAThreadEnd(struct GBAThread* threadContext);
102void GBAThreadReset(struct GBAThread* threadContext);
103void GBAThreadJoin(struct GBAThread* threadContext);
104
105void GBAThreadInterrupt(struct GBAThread* threadContext);
106void GBAThreadContinue(struct GBAThread* threadContext);
107
108void GBAThreadPause(struct GBAThread* threadContext);
109void GBAThreadUnpause(struct GBAThread* threadContext);
110bool GBAThreadIsPaused(struct GBAThread* threadContext);
111void GBAThreadTogglePause(struct GBAThread* threadContext);
112void GBAThreadPauseFromThread(struct GBAThread* threadContext);
113struct GBAThread* GBAThreadGetContext(void);
114
115#ifdef USE_PNG
116void GBAThreadTakeScreenshot(struct GBAThread* threadContext);
117#endif
118
119void GBASyncPostFrame(struct GBASync* sync);
120bool GBASyncWaitFrameStart(struct GBASync* sync, int frameskip);
121void GBASyncWaitFrameEnd(struct GBASync* sync);
122bool GBASyncDrawingFrame(struct GBASync* sync);
123
124void GBASyncProduceAudio(struct GBASync* sync, bool wait);
125void GBASyncLockAudio(struct GBASync* sync);
126void GBASyncUnlockAudio(struct GBASync* sync);
127void GBASyncConsumeAudio(struct GBASync* sync);
128
129#endif