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| //-----------------------------------------------------------------------------
// Name: CSoundManager::CreateStreaming()
// Desc:
//-----------------------------------------------------------------------------
HRESULT CSoundManager::CreateStreaming( CStreamingSound** ppStreamingSound,
LPTSTR strWaveFileName,
DWORD dwCreationFlags,
GUID guid3DAlgorithm,
DWORD dwNotifyCount,
DWORD dwNotifySize,
HANDLE hNotifyEvent )
{
HRESULT hr;
if( m_pDS == NULL )
return CO_E_NOTINITIALIZED;
if( strWaveFileName == NULL || ppStreamingSound == NULL || hNotifyEvent == NULL )
return E_INVALIDARG;
LPDIRECTSOUNDBUFFER pDSBuffer = NULL;
LPDIRECTSOUNDBUFFER pDSBuffer2 = NULL;
DWORD dwDSBufferSize = NULL;
CWaveFile* pWaveFile = NULL;
DSBPOSITIONNOTIFY* aPosNotify = NULL;
LPDIRECTSOUNDNOTIFY pDSNotify = NULL;
pWaveFile = new CWaveFile();
pWaveFile->Open( strWaveFileName, NULL, WAVEFILE_READ );
// Figure out how big the DSound buffer should be
dwDSBufferSize = dwNotifySize * dwNotifyCount;
// Set up the direct sound buffer. Request the NOTIFY flag, so
// that we are notified as the sound buffer plays. Note, that using this flag
// may limit the amount of hardware acceleration that can occur.
DSBUFFERDESC dsbd;
ZeroMemory( &dsbd, sizeof(DSBUFFERDESC) );
dsbd.dwSize = sizeof(DSBUFFERDESC);
dsbd.dwFlags = dwCreationFlags |
DSBCAPS_CTRLPOSITIONNOTIFY |
DSBCAPS_GETCURRENTPOSITION2;
dsbd.dwBufferBytes = dwDSBufferSize;
dsbd.guid3DAlgorithm = guid3DAlgorithm;
dsbd.lpwfxFormat = pWaveFile->m_pwfx;
//La on cree le buffer secondaire et on doit en créer au moins 2 diférents
if( FAILED( hr = m_pDS->CreateSoundBuffer( &dsbd, &pDSBuffer, NULL ) ) )
{
// If wave format isn't then it will return
// either DSERR_BADFORMAT or E_INVALIDARG
if( hr == DSERR_BADFORMAT || hr == E_INVALIDARG )
return DXTRACE_ERR_NOMSGBOX( TEXT("CreateSoundBuffer"), hr );
return DXTRACE_ERR( TEXT("CreateSoundBuffer"), hr );
}
// Create the notification events, so that we know when to fill
// the buffer as the sound plays.
if( FAILED( hr = pDSBuffer->QueryInterface( IID_IDirectSoundNotify,
(VOID**)&pDSNotify ) ) )
{
SAFE_DELETE( aPosNotify );
return DXTRACE_ERR( TEXT("QueryInterface"), hr );
}
aPosNotify = new DSBPOSITIONNOTIFY[ dwNotifyCount ];
if( aPosNotify == NULL )
return E_OUTOFMEMORY;
for( DWORD i = 0; i < dwNotifyCount; i++ )
{
aPosNotify[i].dwOffset = (dwNotifySize * i) + dwNotifySize - 1;
aPosNotify[i].hEventNotify = hNotifyEvent;
}
// Tell DirectSound when to notify us. The notification will come in the from
// of signaled events that are handled in WinMain()
if( FAILED( hr = pDSNotify->SetNotificationPositions( dwNotifyCount,
aPosNotify ) ) )
{
SAFE_RELEASE( pDSNotify );
SAFE_DELETE( aPosNotify );
return DXTRACE_ERR( TEXT("SetNotificationPositions"), hr );
}
SAFE_RELEASE( pDSNotify );
SAFE_DELETE( aPosNotify );
// Create the sound
*ppStreamingSound = new CStreamingSound( pDSBuffer, dwDSBufferSize, pWaveFile, dwNotifySize );
return S_OK;
} |
DirectSound...
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Envoyé par burkhard
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