Leaked source code of windows server 2003
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/*==========================================================================;
* * Copyright (C) 1999 Microsoft Corporation. All Rights Reserved. * * File: dpvaconv.h * Content: Header file for DirectPlayVoice compression provider (ACM) * * History: * Date By Reason * =========== =========== ==================== * 10/27/99 rodtoll created ***************************************************************************/#ifndef __DPVACONV_H
#define __DPVACONV_H
struct DPVACMCONVOBJECT;
class CDPVACMConv{public: CDPVACMConv(); ~CDPVACMConv(); static HRESULT I_QueryInterface( DPVACMCONVOBJECT *This, REFIID riid, PVOID *ppvObj ); static HRESULT I_AddRef( DPVACMCONVOBJECT *This ); static HRESULT I_Release( DPVACMCONVOBJECT *This );
static HRESULT I_InitDeCompress( DPVACMCONVOBJECT *This, GUID guidSourceCT, LPWAVEFORMATEX lpwfxTargetFormat ); static HRESULT I_InitCompress( DPVACMCONVOBJECT *This, LPWAVEFORMATEX lpwfxSourceFormat, GUID guidTargetCT ); static HRESULT I_IsValid( DPVACMCONVOBJECT *This, LPBOOL pfValid ); static HRESULT I_GetUnCompressedFrameSize( DPVACMCONVOBJECT *This, LPDWORD lpdwFrameSize ); static HRESULT I_GetCompressedFrameSize( DPVACMCONVOBJECT *This, LPDWORD lpdwCompressedSize ); static HRESULT I_GetNumFramesPerBuffer( DPVACMCONVOBJECT *This, LPDWORD lpdwFramesPerBuffer ); static HRESULT I_Convert( DPVACMCONVOBJECT *This, LPVOID lpInputBuffer, DWORD dwInputSize, LPVOID lpOutputBuffer, LPDWORD lpdwOutputSize, BOOL fSilence );
HRESULT InitDeCompress( GUID guidSourceCT, LPWAVEFORMATEX lpwfxTargetFormat ); HRESULT InitCompress( LPWAVEFORMATEX lpwfxSourceFormat, GUID guidTargetCT ); HRESULT Convert( LPVOID lpInputBuffer, DWORD dwInputSize, LPVOID lpOutputBuffer, LPDWORD lpdwOutputSize, BOOL fSilence );
BOOL InitClass();
protected:
HRESULT Initialize( WAVEFORMATEX *pwfSrcFormat, WAVEFORMATEX *pwfTargetFormat, const WAVEFORMATEX *pwfUnCompressedFormat ); HRESULT GetCompressionInfo( GUID guidCT ); DWORD CalcUnCompressedFrameSize( const WAVEFORMATEX* lpwfxFormat ) const; ACMSTREAMHEADER m_ashSource; ACMSTREAMHEADER m_ashTarget; HACMSTREAM m_hacmSource; HACMSTREAM m_hacmTarget; BOOL m_fDirectConvert; // Is it a direct conversion
BOOL m_fValid; BYTE *m_pbInnerBuffer; // Buffer for intermediate step of conversion
DWORD m_dwInnerBufferSize; // Size of the buffer
DNCRITICAL_SECTION m_csLock; LONG m_lRefCount; LPDVFULLCOMPRESSIONINFO m_pdvfci; DWORD m_dwUnCompressedFrameSize; DWORD m_dwCompressedFrameSize; DWORD m_dwNumFramesPerBuffer; BOOL m_fTargetEightBit;
BOOL m_fCritSecInited;};
struct DPVACMCONVOBJECT{ LPVOID lpvVtble; CDPVACMConv *pObject;};
typedef DPVACMCONVOBJECT *LPDPVACMCONVOBJECT, *PDPVACMCONVOBJECT;
#endif
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