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87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
/*******************************************************************
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*
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* File: Audio_mediaserver.h
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*
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* Author: Peter van Sebille (peter@yipton.net)
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*
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* Modified/adapted for picodriveN by notaz, 2006
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*
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* (c) Copyright 2006, notaz
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* (c) Copyright 2001, Peter van Sebille
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* All Rights Reserved
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*
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*******************************************************************/
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#ifndef __AUDIO_MEDIASERVER_H
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#define __AUDIO_MEDIASERVER_H
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#include <Mda\Common\Audio.h>
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#include <MdaAudioOutputStream.h>
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#include "audio.h"
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#include "polledas.h"
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const TInt KSoundBuffers = 4;
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const TInt KBlockTime = 1000000 / 5; // hardcoded: 5 updates/sec
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const TInt KMaxLag = 260000; // max sound lag, lower values increase chanse of underflow
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const TInt KMaxUnderflows = 50; // max underflows/API errors we are going allow in a row (to prevent lockups)
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class TGameAudioEventListener : public MMdaAudioOutputStreamCallback
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{
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public: // implements MMdaAudioOutputStreamCallback
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void MaoscOpenComplete(TInt aError);
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void MaoscBufferCopied(TInt aError, const TDesC8& );
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void MaoscPlayComplete(TInt aError);
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TBool iIsOpen;
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// TBool iHasCopied;
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TInt iUnderflowed;
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};
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class CGameAudioMS : public IGameAudio // IGameAudio MUST be specified first!
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{
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public: // implements IGameAudio
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TInt16 *NextFrameL();
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TInt16 *DupeFrameL(TInt &aUnderflowed);
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TInt16 *ResumeL();
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void Pause();
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void ChangeVolume(TInt aUp);
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public:
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~CGameAudioMS();
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CGameAudioMS(TInt aRate, TBool aStereo, TInt aPcmFrames, TInt aBufferedFrames);
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void ConstructL();
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EXPORT_C static CGameAudioMS* NewL(TInt aRate, TBool aStereo, TInt aPcmFrames, TInt aBufferedFrames);
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protected:
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void WriteBlockL();
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void UnderflowedL();
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protected:
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void WaitForOpenToCompleteL();
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// void WaitForCopyToCompleteL();
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TInt iRate;
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TBool iStereo;
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CMdaAudioOutputStream *iMdaAudioOutputStream;
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TMdaAudioDataSettings iMdaAudioDataSettings;
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TGameAudioEventListener iListener;
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CPolledActiveScheduler *iScheduler;
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HBufC8* iSoundBuffers[KSoundBuffers+1];
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TInt iBufferedFrames;
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TInt16* iCurrentPosition;
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TInt iCurrentBuffer;
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TInt iFrameCount;
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TInt iPcmFrames;
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CMdaServer* iServer;
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TInt64 iTime;
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};
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#endif /* __AUDIO_MEDIASERVER_H */
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