Leaked source code of windows server 2003
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/////////////////////////////////////////////////////////////////////
//
// Module: tsstream.h
//
// Purpose: Sound redirection shared data definitions
//
// Copyright(C) Microsoft Corporation 2000
//
// History: 4-10-2000 vladimis [created]
//
/////////////////////////////////////////////////////////////////////
#ifndef _TSSTREAM_H
#define _TSSTREAM_H
#include "rdpsndp.h"
#define TSSND_MAX_BLOCKS 2
#define TSSND_TOTALSTREAMSIZE (TSSND_MAX_BLOCKS * TSSND_BLOCKSIZE)
#define TSSND_STREAMNAME L"Local\\RDPSoundStream"
#define TSSND_DATAREADYEVENT L"Local\\RDPSoundDataReadyEvent"
#define TSSND_STREAMISEMPTYEVENT L"Local\\RDPSoundStreamIsEmptyEvent"
#define TSSND_STREAMMUTEX L"Local\\RDPSoundStreamMutex"
#define TSSND_WAITTOINIT L"Local\\RDPSoundWaitInit"
#define _NEG_IDX ((((BYTE)-1) >> 1) + 1)
#define TSSNDFLAGS_MUTE 1
typedef struct {
//
// commands
//
BOOL bNewVolume;
BOOL bNewPitch;
//
// sound cap data
//
DWORD dwSoundCaps;
DWORD dwSoundFlags;
DWORD dwVolume;
DWORD dwPitch;
//
// data control
//
BYTE cLastBlockQueued;
BYTE cLastBlockSent;
BYTE cLastBlockConfirmed;
//
// data block
//
// See the PVOID... DON'T TOUCH IT
// it has to be before pSndData, otherwise
// it won't be aligned and will crash on WIN64
// ( and all other RISC platforms )
#ifdef _WIN64
PVOID pPad;
#else
//
// align with 64bit version of the stream
// needed for wow64 to work smootly
//
DWORD dwPad1;
DWORD dwPad2;
#endif // !_WIN64
BYTE pSndData[TSSND_MAX_BLOCKS * TSSND_BLOCKSIZE];
} SNDSTREAM, *PSNDSTREAM;
#endif // !_TSSTREAM_H