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/* MtCoder.h -- Multi-thread Coder
2009-11-19 : Igor Pavlov : Public domain */

#ifndef __MT_CODER_H
#define __MT_CODER_H

#include "Threads.h"

EXTERN_C_BEGIN

typedef struct
{
	CThread thread;
	CAutoResetEvent startEvent;
	CAutoResetEvent finishedEvent;
	int stop;

	THREAD_FUNC_TYPE func;
	LPVOID param;
	THREAD_FUNC_RET_TYPE res;
} CLoopThread;

void LoopThread_Construct(CLoopThread *p);
void LoopThread_Close(CLoopThread *p);
WRes LoopThread_Create(CLoopThread *p);
WRes LoopThread_StopAndWait(CLoopThread *p);
WRes LoopThread_StartSubThread(CLoopThread *p);
WRes LoopThread_WaitSubThread(CLoopThread *p);

#ifndef _7ZIP_ST
#define NUM_MT_CODER_THREADS_MAX 32
#else
#define NUM_MT_CODER_THREADS_MAX 1
#endif

typedef struct
{
	UInt64 totalInSize;
	UInt64 totalOutSize;
	ICompressProgress *progress;
	SRes res;
	CCriticalSection cs;
	UInt64 inSizes[NUM_MT_CODER_THREADS_MAX];
	UInt64 outSizes[NUM_MT_CODER_THREADS_MAX];
} CMtProgress;

SRes MtProgress_Set(CMtProgress *p, unsigned index, UInt64 inSize, UInt64 outSize);

struct _CMtCoder;

typedef struct
{
	struct _CMtCoder *mtCoder;
	Byte *outBuf;
	size_t outBufSize;
	Byte *inBuf;
	size_t inBufSize;
	unsigned index;
	CLoopThread thread;

	Bool stopReading;
	Bool stopWriting;
	CAutoResetEvent canRead;
	CAutoResetEvent canWrite;
} CMtThread;

typedef struct
{
	SRes (*Code)(void *p, unsigned index, Byte *dest, size_t *destSize,
		const Byte *src, size_t srcSize, int finished);
} IMtCoderCallback;

typedef struct _CMtCoder
{
	size_t blockSize;
	size_t destBlockSize;
	unsigned numThreads;

	ISeqInStream *inStream;
	ISeqOutStream *outStream;
	ICompressProgress *progress;
	ISzAlloc *alloc;

	IMtCoderCallback *mtCallback;
	CCriticalSection cs;
	SRes res;

	CMtProgress mtProgress;
	CMtThread threads[NUM_MT_CODER_THREADS_MAX];
} CMtCoder;

void MtCoder_Construct(CMtCoder* p);
void MtCoder_Destruct(CMtCoder* p);
SRes MtCoder_Code(CMtCoder *p);

EXTERN_C_END

#endif