// ACMTransformer.h: interface for the ACMTransformer class.
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//
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//////////////////////////////////////////////////////////////////////
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#ifndef AFX_ACMTRANSFORMER_H__86E322E0_F705_4ED1_9572_2A65C9105F62__INCLUDED_
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#define AFX_ACMTRANSFORMER_H__86E322E0_F705_4ED1_9572_2A65C9105F62__INCLUDED_
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#include <mmreg.h>
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#include <Msacm.h>
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#include <mmsystem.h>
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#include <queue>
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#include <list>
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#include "AudioTransformer.h"
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#include "Parameters.h"
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#define ACMTRANSFORMER_NUM_STREAMHEADER 1
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class ACMTransformer : public AudioTransformer
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{
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public:
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ACMTransformer();
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virtual ~ACMTransformer();
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SetSourceFormat(WAVEFORMATEX &wfxSource);
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SetDestinationFormat(WAVEFORMATEX &wfxDest);
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int TransformStarted();
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int TransformStopped();
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int SetOutputDuration(int millisecs);
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int FlushBuffer();
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protected:
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virtual int TransformAudioSamples(std::vector<std::pair<AudioSample *, AudioSource *> > &data, AudioSample **ppAudioSample);
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virtual int SetTraceLevel();
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int RenderAudioSamples(std::vector<std::pair<AudioSample *, AudioSource *> > &data);
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int GenerateData(AudioSample **ppAudioSample);
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private:
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ACMSTREAMHEADER *GetBuffer();
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void ReleaseBuffer(ACMSTREAMHEADER *acmHdr);
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bool IsRunning();
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void SetRunning(bool isRunning);
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int AddConvertedData(unsigned char *dataIn, int numBytes);
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static void CALLBACK ACMCallback(HACMSTREAM has, UINT uMsg, DWORD dwInstance, LPARAM lParam1, LPARAM lParam2);
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private:
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WAVEFORMATEX sourceFormat;
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WAVEFORMATEX destFormat;
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HACMSTREAM hACMStream;
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ACMSTREAMHEADER acmStreamHeader[ACMTRANSFORMER_NUM_STREAMHEADER];
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unsigned char sourceBuffer[ACMTRANSFORMER_NUM_STREAMHEADER][ACMTRANSFORMER_MAX_SOURCEBUFFERSIZE];
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unsigned char destBuffer[ACMTRANSFORMER_NUM_STREAMHEADER][ACMTRANSFORMER_MAX_DESTBUFFERSIZE];
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std::queue<unsigned char> outputQueue;
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std::list<ACMSTREAMHEADER *> freeBuffers;
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CRITICAL_SECTION outputQueueMutex;
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CRITICAL_SECTION freeBuffersMutex;
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CRITICAL_SECTION stateMutex;
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CRITICAL_SECTION acmMutex;
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CRITICAL_SECTION queryStateMutex;
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HANDLE freeBuffersEvent;
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HANDLE outputEnqueueEvent;
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HANDLE outputDequeueEvent;
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int outputDuration;
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bool bRunning;
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};
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#endif // !defined(AFX_ACMTRANSFORMER_H__86E322E0_F705_4ED1_9572_2A65C9105F62__INCLUDED_)
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