62 lines
2.1 KiB
C
62 lines
2.1 KiB
C
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/*==========================================================================
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*
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* Copyright (C) 1999 Microsoft Corporation. All Rights Reserved.
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*
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* File: dsplayb.h
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* Content: Definition of the CDirectSoundPlaybackBuffer class
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*
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* History:
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* Date By Reason
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* ==== == ======
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* 07/16/99 rodtoll Created
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* 08/04/99 rodtoll Updated to take dsound ranges for volume
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* 11/12/99 rodtoll Modified abstraction for new waveOut support.
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* Now abstracted types look almost like dsound objects
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* 01/27/2000 rodtoll Updated sound classes to accept playback flags,
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* buffer structures and DSBUFFERDESC instead of DSBUFFERDESC1
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* 04/17/2000 rodtoll Fix: Bug #32215 - Session Lost after resuming from hibernation
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*
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***************************************************************************/
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#ifndef __DIRECTSOUNDPLAYBACKBUFFER_H
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#define __DIRECTSOUNDPLAYBACKBUFFER_H
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// CDirectSoundPlaybackBuffer
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//
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// This class provides an implementation of the CAudioPlaybackBuffer class
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// for directsound. In the abstract sense, it represents a buffer of audio
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// which can be played to the sound hardware which consists of multiple,
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// equal length subbuffers.
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//
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class CDirectSoundPlaybackBuffer: public CAudioPlaybackBuffer
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{
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public:
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CDirectSoundPlaybackBuffer( LPDIRECTSOUNDBUFFER lpdsBuffer );
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virtual ~CDirectSoundPlaybackBuffer();
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public:
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HRESULT Lock( DWORD dwWriteCursor, DWORD dwWriteBytes, LPVOID *lplpvBuffer1, LPDWORD lpdwSize1, LPVOID *lplpvBuffer2, LPDWORD lpdwSize2, DWORD dwFlags );
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HRESULT UnLock( LPVOID lpvBuffer1, DWORD dwSize1, LPVOID lpvBuffer2, DWORD dwSize2 );
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HRESULT SetVolume( LONG lVolume );
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HRESULT GetCurrentPosition( LPDWORD lpdwPosition );
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HRESULT SetCurrentPosition( DWORD dwPosition );
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HRESULT Get3DBuffer( LPDIRECTSOUND3DBUFFER *lplpds3dBuffer );
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HRESULT Play( DWORD dwPriority, DWORD dwFlags );
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HRESULT Stop();
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HRESULT Restore();
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DWORD GetStartupLatency();
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protected:
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LPDIRECTSOUNDBUFFER m_lpdsBuffer;
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DWORD m_dwLastPosition;
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DWORD m_dwPriority;
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DWORD m_dwFlags;
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BOOL m_fPlaying;
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};
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#endif
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