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