www.pudn.com > XFileLoadingCode.zip > DXUTsound.cpp
//-----------------------------------------------------------------------------
// File: DXUTsound.cpp
//
// Desc: DirectSound framework classes for reading and writing wav files and
// playing them in DirectSound buffers. Feel free to use this class
// as a starting point for adding extra functionality.
//
// Copyright (c) Microsoft Corp. All rights reserved.
//-----------------------------------------------------------------------------
#define STRICT
#include "dxstdafx.h"
#include
#include
#include "DXUTsound.h"
#undef min // use __min instead
#undef max // use __max instead
//-----------------------------------------------------------------------------
// Name: CSoundManager::CSoundManager()
// Desc: Constructs the class
//-----------------------------------------------------------------------------
CSoundManager::CSoundManager()
{
m_pDS = NULL;
}
//-----------------------------------------------------------------------------
// Name: CSoundManager::~CSoundManager()
// Desc: Destroys the class
//-----------------------------------------------------------------------------
CSoundManager::~CSoundManager()
{
SAFE_RELEASE( m_pDS );
}
//-----------------------------------------------------------------------------
// Name: CSoundManager::Initialize()
// Desc: Initializes the IDirectSound object and also sets the primary buffer
// format. This function must be called before any others.
//-----------------------------------------------------------------------------
HRESULT CSoundManager::Initialize( HWND hWnd,
DWORD dwCoopLevel )
{
HRESULT hr;
SAFE_RELEASE( m_pDS );
// Create IDirectSound using the primary sound device
if( FAILED( hr = DirectSoundCreate8( NULL, &m_pDS, NULL ) ) )
return DXUT_ERR( L"DirectSoundCreate8", hr );
// Set DirectSound coop level
if( FAILED( hr = m_pDS->SetCooperativeLevel( hWnd, dwCoopLevel ) ) )
return DXUT_ERR( L"SetCooperativeLevel", hr );
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: CSoundManager::SetPrimaryBufferFormat()
// Desc: Set primary buffer to a specified format
// !WARNING! - Setting the primary buffer format and then using this
// same DirectSound object for DirectMusic messes up
// DirectMusic!
// For example, to set the primary buffer format to 22kHz stereo, 16-bit
// then: dwPrimaryChannels = 2
// dwPrimaryFreq = 22050,
// dwPrimaryBitRate = 16
//-----------------------------------------------------------------------------
HRESULT CSoundManager::SetPrimaryBufferFormat( DWORD dwPrimaryChannels,
DWORD dwPrimaryFreq,
DWORD dwPrimaryBitRate )
{
HRESULT hr;
LPDIRECTSOUNDBUFFER pDSBPrimary = NULL;
if( m_pDS == NULL )
return CO_E_NOTINITIALIZED;
// Get the primary buffer
DSBUFFERDESC dsbd;
ZeroMemory( &dsbd, sizeof(DSBUFFERDESC) );
dsbd.dwSize = sizeof(DSBUFFERDESC);
dsbd.dwFlags = DSBCAPS_PRIMARYBUFFER;
dsbd.dwBufferBytes = 0;
dsbd.lpwfxFormat = NULL;
if( FAILED( hr = m_pDS->CreateSoundBuffer( &dsbd, &pDSBPrimary, NULL ) ) )
return DXUT_ERR( L"CreateSoundBuffer", hr );
WAVEFORMATEX wfx;
ZeroMemory( &wfx, sizeof(WAVEFORMATEX) );
wfx.wFormatTag = (WORD) WAVE_FORMAT_PCM;
wfx.nChannels = (WORD) dwPrimaryChannels;
wfx.nSamplesPerSec = (DWORD) dwPrimaryFreq;
wfx.wBitsPerSample = (WORD) dwPrimaryBitRate;
wfx.nBlockAlign = (WORD) (wfx.wBitsPerSample / 8 * wfx.nChannels);
wfx.nAvgBytesPerSec = (DWORD) (wfx.nSamplesPerSec * wfx.nBlockAlign);
if( FAILED( hr = pDSBPrimary->SetFormat(&wfx) ) )
return DXUT_ERR( L"SetFormat", hr );
SAFE_RELEASE( pDSBPrimary );
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: CSoundManager::Get3DListenerInterface()
// Desc: Returns the 3D listener interface associated with primary buffer.
//-----------------------------------------------------------------------------
HRESULT CSoundManager::Get3DListenerInterface( LPDIRECTSOUND3DLISTENER* ppDSListener )
{
HRESULT hr;
DSBUFFERDESC dsbdesc;
LPDIRECTSOUNDBUFFER pDSBPrimary = NULL;
if( ppDSListener == NULL )
return E_INVALIDARG;
if( m_pDS == NULL )
return CO_E_NOTINITIALIZED;
*ppDSListener = NULL;
// Obtain primary buffer, asking it for 3D control
ZeroMemory( &dsbdesc, sizeof(DSBUFFERDESC) );
dsbdesc.dwSize = sizeof(DSBUFFERDESC);
dsbdesc.dwFlags = DSBCAPS_CTRL3D | DSBCAPS_PRIMARYBUFFER;
if( FAILED( hr = m_pDS->CreateSoundBuffer( &dsbdesc, &pDSBPrimary, NULL ) ) )
return DXUT_ERR( L"CreateSoundBuffer", hr );
if( FAILED( hr = pDSBPrimary->QueryInterface( IID_IDirectSound3DListener,
(VOID**)ppDSListener ) ) )
{
SAFE_RELEASE( pDSBPrimary );
return DXUT_ERR( L"QueryInterface", hr );
}
// Release the primary buffer, since it is not need anymore
SAFE_RELEASE( pDSBPrimary );
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: CSoundManager::Create()
// Desc:
//-----------------------------------------------------------------------------
HRESULT CSoundManager::Create( CSound** ppSound,
LPWSTR strWaveFileName,
DWORD dwCreationFlags,
GUID guid3DAlgorithm,
DWORD dwNumBuffers )
{
HRESULT hr;
HRESULT hrRet = S_OK;
DWORD i;
LPDIRECTSOUNDBUFFER* apDSBuffer = NULL;
DWORD dwDSBufferSize = NULL;
CWaveFile* pWaveFile = NULL;
if( m_pDS == NULL )
return CO_E_NOTINITIALIZED;
if( strWaveFileName == NULL || ppSound == NULL || dwNumBuffers < 1 )
return E_INVALIDARG;
apDSBuffer = new LPDIRECTSOUNDBUFFER[dwNumBuffers];
if( apDSBuffer == NULL )
{
hr = E_OUTOFMEMORY;
goto LFail;
}
pWaveFile = new CWaveFile();
if( pWaveFile == NULL )
{
hr = E_OUTOFMEMORY;
goto LFail;
}
pWaveFile->Open( strWaveFileName, NULL, WAVEFILE_READ );
if( pWaveFile->GetSize() == 0 )
{
// Wave is blank, so don't create it.
hr = E_FAIL;
goto LFail;
}
// Make the DirectSound buffer the same size as the wav file
dwDSBufferSize = pWaveFile->GetSize();
// Create the direct sound buffer, and only request the flags needed
// since each requires some overhead and limits if the buffer can
// be hardware accelerated
DSBUFFERDESC dsbd;
ZeroMemory( &dsbd, sizeof(DSBUFFERDESC) );
dsbd.dwSize = sizeof(DSBUFFERDESC);
dsbd.dwFlags = dwCreationFlags;
dsbd.dwBufferBytes = dwDSBufferSize;
dsbd.guid3DAlgorithm = guid3DAlgorithm;
dsbd.lpwfxFormat = pWaveFile->m_pwfx;
// DirectSound is only guarenteed to play PCM data. Other
// formats may or may not work depending the sound card driver.
hr = m_pDS->CreateSoundBuffer( &dsbd, &apDSBuffer[0], NULL );
// Be sure to return this error code if it occurs so the
// callers knows this happened.
if( hr == DS_NO_VIRTUALIZATION )
hrRet = DS_NO_VIRTUALIZATION;
if( FAILED(hr) )
{
// DSERR_BUFFERTOOSMALL will be returned if the buffer is
// less than DSBSIZE_FX_MIN and the buffer is created
// with DSBCAPS_CTRLFX.
// It might also fail if hardware buffer mixing was requested
// on a device that doesn't support it.
DXUT_ERR( L"CreateSoundBuffer", hr );
goto LFail;
}
// Default to use DuplicateSoundBuffer() when created extra buffers since always
// create a buffer that uses the same memory however DuplicateSoundBuffer() will fail if
// DSBCAPS_CTRLFX is used, so use CreateSoundBuffer() instead in this case.
if( (dwCreationFlags & DSBCAPS_CTRLFX) == 0 )
{
for( i=1; iDuplicateSoundBuffer( apDSBuffer[0], &apDSBuffer[i] ) ) )
{
DXUT_ERR( L"DuplicateSoundBuffer", hr );
goto LFail;
}
}
}
else
{
for( i=1; iCreateSoundBuffer( &dsbd, &apDSBuffer[i], NULL );
if( FAILED(hr) )
{
DXUT_ERR( L"CreateSoundBuffer", hr );
goto LFail;
}
}
}
// Create the sound
*ppSound = new CSound( apDSBuffer, dwDSBufferSize, dwNumBuffers, pWaveFile, dwCreationFlags );
SAFE_DELETE_ARRAY( apDSBuffer );
return hrRet;
LFail:
// Cleanup
SAFE_DELETE( pWaveFile );
SAFE_DELETE_ARRAY( apDSBuffer );
return hr;
}
//-----------------------------------------------------------------------------
// Name: CSoundManager::CreateFromMemory()
// Desc:
//-----------------------------------------------------------------------------
HRESULT CSoundManager::CreateFromMemory( CSound** ppSound,
BYTE* pbData,
ULONG ulDataSize,
LPWAVEFORMATEX pwfx,
DWORD dwCreationFlags,
GUID guid3DAlgorithm,
DWORD dwNumBuffers )
{
HRESULT hr;
DWORD i;
LPDIRECTSOUNDBUFFER* apDSBuffer = NULL;
DWORD dwDSBufferSize = NULL;
CWaveFile* pWaveFile = NULL;
if( m_pDS == NULL )
return CO_E_NOTINITIALIZED;
if( pbData == NULL || ppSound == NULL || dwNumBuffers < 1 )
return E_INVALIDARG;
apDSBuffer = new LPDIRECTSOUNDBUFFER[dwNumBuffers];
if( apDSBuffer == NULL )
{
hr = E_OUTOFMEMORY;
goto LFail;
}
pWaveFile = new CWaveFile();
if( pWaveFile == NULL )
{
hr = E_OUTOFMEMORY;
goto LFail;
}
pWaveFile->OpenFromMemory( pbData,ulDataSize, pwfx, WAVEFILE_READ );
// Make the DirectSound buffer the same size as the wav file
dwDSBufferSize = ulDataSize;
// Create the direct sound buffer, and only request the flags needed
// since each requires some overhead and limits if the buffer can
// be hardware accelerated
DSBUFFERDESC dsbd;
ZeroMemory( &dsbd, sizeof(DSBUFFERDESC) );
dsbd.dwSize = sizeof(DSBUFFERDESC);
dsbd.dwFlags = dwCreationFlags;
dsbd.dwBufferBytes = dwDSBufferSize;
dsbd.guid3DAlgorithm = guid3DAlgorithm;
dsbd.lpwfxFormat = pwfx;
if( FAILED( hr = m_pDS->CreateSoundBuffer( &dsbd, &apDSBuffer[0], NULL ) ) )
{
DXUT_ERR( L"CreateSoundBuffer", hr );
goto LFail;
}
// Default to use DuplicateSoundBuffer() when created extra buffers since always
// create a buffer that uses the same memory however DuplicateSoundBuffer() will fail if
// DSBCAPS_CTRLFX is used, so use CreateSoundBuffer() instead in this case.
if( (dwCreationFlags & DSBCAPS_CTRLFX) == 0 )
{
for( i=1; iDuplicateSoundBuffer( apDSBuffer[0], &apDSBuffer[i] ) ) )
{
DXUT_ERR( L"DuplicateSoundBuffer", hr );
goto LFail;
}
}
}
else
{
for( i=1; iCreateSoundBuffer( &dsbd, &apDSBuffer[i], NULL );
if( FAILED(hr) )
{
DXUT_ERR( L"CreateSoundBuffer", hr );
goto LFail;
}
}
}
// Create the sound
*ppSound = new CSound( apDSBuffer, dwDSBufferSize, dwNumBuffers, pWaveFile, dwCreationFlags );
SAFE_DELETE_ARRAY( apDSBuffer );
return S_OK;
LFail:
// Cleanup
SAFE_DELETE_ARRAY( apDSBuffer );
return hr;
}
//-----------------------------------------------------------------------------
// Name: CSoundManager::CreateStreaming()
// Desc:
//-----------------------------------------------------------------------------
HRESULT CSoundManager::CreateStreaming( CStreamingSound** ppStreamingSound,
LPWSTR 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;
DWORD dwDSBufferSize = NULL;
CWaveFile* pWaveFile = NULL;
DSBPOSITIONNOTIFY* aPosNotify = NULL;
LPDIRECTSOUNDNOTIFY pDSNotify = NULL;
pWaveFile = new CWaveFile();
if( pWaveFile == NULL )
return E_OUTOFMEMORY;
pWaveFile->Open( strWaveFileName, NULL, WAVEFILE_READ );
// Figure out how big the DirectSound 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;
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 DXUT_ERR( L"CreateSoundBuffer", hr );
return DXUT_ERR( L"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_ARRAY( aPosNotify );
return DXUT_ERR( L"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_ARRAY( aPosNotify );
return DXUT_ERR( L"SetNotificationPositions", hr );
}
SAFE_RELEASE( pDSNotify );
SAFE_DELETE_ARRAY( aPosNotify );
// Create the sound
*ppStreamingSound = new CStreamingSound( pDSBuffer, dwDSBufferSize, pWaveFile, dwNotifySize );
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: CSound::CSound()
// Desc: Constructs the class
//-----------------------------------------------------------------------------
CSound::CSound( LPDIRECTSOUNDBUFFER* apDSBuffer, DWORD dwDSBufferSize,
DWORD dwNumBuffers, CWaveFile* pWaveFile, DWORD dwCreationFlags )
{
DWORD i;
if( dwNumBuffers <= 0 )
return;
m_apDSBuffer = new LPDIRECTSOUNDBUFFER[dwNumBuffers];
if( NULL != m_apDSBuffer )
{
for( i=0; iLock( 0, m_dwDSBufferSize,
&pDSLockedBuffer, &dwDSLockedBufferSize,
NULL, NULL, 0L ) ) )
return DXUT_ERR( L"Lock", hr );
// Reset the wave file to the beginning
m_pWaveFile->ResetFile();
if( FAILED( hr = m_pWaveFile->Read( (BYTE*) pDSLockedBuffer,
dwDSLockedBufferSize,
&dwWavDataRead ) ) )
return DXUT_ERR( L"Read", hr );
if( dwWavDataRead == 0 )
{
// Wav is blank, so just fill with silence
FillMemory( (BYTE*) pDSLockedBuffer,
dwDSLockedBufferSize,
(BYTE)(m_pWaveFile->m_pwfx->wBitsPerSample == 8 ? 128 : 0 ) );
}
else if( dwWavDataRead < dwDSLockedBufferSize )
{
// If the wav file was smaller than the DirectSound buffer,
// we need to fill the remainder of the buffer with data
if( bRepeatWavIfBufferLarger )
{
// Reset the file and fill the buffer with wav data
DWORD dwReadSoFar = dwWavDataRead; // From previous call above.
while( dwReadSoFar < dwDSLockedBufferSize )
{
// This will keep reading in until the buffer is full
// for very short files
if( FAILED( hr = m_pWaveFile->ResetFile() ) )
return DXUT_ERR( L"ResetFile", hr );
hr = m_pWaveFile->Read( (BYTE*)pDSLockedBuffer + dwReadSoFar,
dwDSLockedBufferSize - dwReadSoFar,
&dwWavDataRead );
if( FAILED(hr) )
return DXUT_ERR( L"Read", hr );
dwReadSoFar += dwWavDataRead;
}
}
else
{
// Don't repeat the wav file, just fill in silence
FillMemory( (BYTE*) pDSLockedBuffer + dwWavDataRead,
dwDSLockedBufferSize - dwWavDataRead,
(BYTE)(m_pWaveFile->m_pwfx->wBitsPerSample == 8 ? 128 : 0 ) );
}
}
// Unlock the buffer, we don't need it anymore.
pDSB->Unlock( pDSLockedBuffer, dwDSLockedBufferSize, NULL, 0 );
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: CSound::RestoreBuffer()
// Desc: Restores the lost buffer. *pbWasRestored returns TRUE if the buffer was
// restored. It can also NULL if the information is not needed.
//-----------------------------------------------------------------------------
HRESULT CSound::RestoreBuffer( LPDIRECTSOUNDBUFFER pDSB, BOOL* pbWasRestored )
{
HRESULT hr;
if( pDSB == NULL )
return CO_E_NOTINITIALIZED;
if( pbWasRestored )
*pbWasRestored = FALSE;
DWORD dwStatus;
if( FAILED( hr = pDSB->GetStatus( &dwStatus ) ) )
return DXUT_ERR( L"GetStatus", hr );
if( dwStatus & DSBSTATUS_BUFFERLOST )
{
// Since the app could have just been activated, then
// DirectSound may not be giving us control yet, so
// the restoring the buffer may fail.
// If it does, sleep until DirectSound gives us control.
do
{
hr = pDSB->Restore();
if( hr == DSERR_BUFFERLOST )
Sleep( 10 );
}
while( ( hr = pDSB->Restore() ) == DSERR_BUFFERLOST );
if( pbWasRestored != NULL )
*pbWasRestored = TRUE;
return S_OK;
}
else
{
return S_FALSE;
}
}
//-----------------------------------------------------------------------------
// Name: CSound::GetFreeBuffer()
// Desc: Finding the first buffer that is not playing and return a pointer to
// it, or if all are playing return a pointer to a randomly selected buffer.
//-----------------------------------------------------------------------------
LPDIRECTSOUNDBUFFER CSound::GetFreeBuffer()
{
if( m_apDSBuffer == NULL )
return FALSE;
DWORD i;
for( i=0; iGetStatus( &dwStatus );
if ( ( dwStatus & DSBSTATUS_PLAYING ) == 0 )
break;
}
}
if( i != m_dwNumBuffers )
return m_apDSBuffer[ i ];
else
return m_apDSBuffer[ rand() % m_dwNumBuffers ];
}
//-----------------------------------------------------------------------------
// Name: CSound::GetBuffer()
// Desc:
//-----------------------------------------------------------------------------
LPDIRECTSOUNDBUFFER CSound::GetBuffer( DWORD dwIndex )
{
if( m_apDSBuffer == NULL )
return NULL;
if( dwIndex >= m_dwNumBuffers )
return NULL;
return m_apDSBuffer[dwIndex];
}
//-----------------------------------------------------------------------------
// Name: CSound::Get3DBufferInterface()
// Desc:
//-----------------------------------------------------------------------------
HRESULT CSound::Get3DBufferInterface( DWORD dwIndex, LPDIRECTSOUND3DBUFFER* ppDS3DBuffer )
{
if( m_apDSBuffer == NULL )
return CO_E_NOTINITIALIZED;
if( dwIndex >= m_dwNumBuffers )
return E_INVALIDARG;
*ppDS3DBuffer = NULL;
return m_apDSBuffer[dwIndex]->QueryInterface( IID_IDirectSound3DBuffer,
(VOID**)ppDS3DBuffer );
}
//-----------------------------------------------------------------------------
// Name: CSound::Play()
// Desc: Plays the sound using voice management flags. Pass in DSBPLAY_LOOPING
// in the dwFlags to loop the sound
//-----------------------------------------------------------------------------
HRESULT CSound::Play( DWORD dwPriority, DWORD dwFlags, LONG lVolume, LONG lFrequency, LONG lPan )
{
HRESULT hr;
BOOL bRestored;
if( m_apDSBuffer == NULL )
return CO_E_NOTINITIALIZED;
LPDIRECTSOUNDBUFFER pDSB = GetFreeBuffer();
if( pDSB == NULL )
return DXUT_ERR( L"GetFreeBuffer", E_FAIL );
// Restore the buffer if it was lost
if( FAILED( hr = RestoreBuffer( pDSB, &bRestored ) ) )
return DXUT_ERR( L"RestoreBuffer", hr );
if( bRestored )
{
// The buffer was restored, so we need to fill it with new data
if( FAILED( hr = FillBufferWithSound( pDSB, FALSE ) ) )
return DXUT_ERR( L"FillBufferWithSound", hr );
}
if( m_dwCreationFlags & DSBCAPS_CTRLVOLUME )
{
pDSB->SetVolume( lVolume );
}
if( lFrequency != -1 &&
(m_dwCreationFlags & DSBCAPS_CTRLFREQUENCY) )
{
pDSB->SetFrequency( lFrequency );
}
if( m_dwCreationFlags & DSBCAPS_CTRLPAN )
{
pDSB->SetPan( lPan );
}
return pDSB->Play( 0, dwPriority, dwFlags );
}
//-----------------------------------------------------------------------------
// Name: CSound::Play3D()
// Desc: Plays the sound using voice management flags. Pass in DSBPLAY_LOOPING
// in the dwFlags to loop the sound
//-----------------------------------------------------------------------------
HRESULT CSound::Play3D( LPDS3DBUFFER p3DBuffer, DWORD dwPriority, DWORD dwFlags, LONG lFrequency )
{
HRESULT hr;
BOOL bRestored;
DWORD dwBaseFrequency;
if( m_apDSBuffer == NULL )
return CO_E_NOTINITIALIZED;
LPDIRECTSOUNDBUFFER pDSB = GetFreeBuffer();
if( pDSB == NULL )
return DXUT_ERR( L"GetFreeBuffer", E_FAIL );
// Restore the buffer if it was lost
if( FAILED( hr = RestoreBuffer( pDSB, &bRestored ) ) )
return DXUT_ERR( L"RestoreBuffer", hr );
if( bRestored )
{
// The buffer was restored, so we need to fill it with new data
if( FAILED( hr = FillBufferWithSound( pDSB, FALSE ) ) )
return DXUT_ERR( L"FillBufferWithSound", hr );
}
if( m_dwCreationFlags & DSBCAPS_CTRLFREQUENCY )
{
pDSB->GetFrequency( &dwBaseFrequency );
pDSB->SetFrequency( dwBaseFrequency + lFrequency );
}
// QI for the 3D buffer
LPDIRECTSOUND3DBUFFER pDS3DBuffer;
hr = pDSB->QueryInterface( IID_IDirectSound3DBuffer, (VOID**) &pDS3DBuffer );
if( SUCCEEDED( hr ) )
{
hr = pDS3DBuffer->SetAllParameters( p3DBuffer, DS3D_IMMEDIATE );
if( SUCCEEDED( hr ) )
{
hr = pDSB->Play( 0, dwPriority, dwFlags );
}
pDS3DBuffer->Release();
}
return hr;
}
//-----------------------------------------------------------------------------
// Name: CSound::Stop()
// Desc: Stops the sound from playing
//-----------------------------------------------------------------------------
HRESULT CSound::Stop()
{
if( m_apDSBuffer == NULL )
return CO_E_NOTINITIALIZED;
HRESULT hr = 0;
for( DWORD i=0; iStop();
return hr;
}
//-----------------------------------------------------------------------------
// Name: CSound::Reset()
// Desc: Reset all of the sound buffers
//-----------------------------------------------------------------------------
HRESULT CSound::Reset()
{
if( m_apDSBuffer == NULL )
return CO_E_NOTINITIALIZED;
HRESULT hr = 0;
for( DWORD i=0; iSetCurrentPosition( 0 );
return hr;
}
//-----------------------------------------------------------------------------
// Name: CSound::IsSoundPlaying()
// Desc: Checks to see if a buffer is playing and returns TRUE if it is.
//-----------------------------------------------------------------------------
BOOL CSound::IsSoundPlaying()
{
BOOL bIsPlaying = FALSE;
if( m_apDSBuffer == NULL )
return FALSE;
for( DWORD i=0; iGetStatus( &dwStatus );
bIsPlaying |= ( ( dwStatus & DSBSTATUS_PLAYING ) != 0 );
}
}
return bIsPlaying;
}
//-----------------------------------------------------------------------------
// Name: CStreamingSound::CStreamingSound()
// Desc: Setups up a buffer so data can be streamed from the wave file into
// a buffer. This is very useful for large wav files that would take a
// while to load. The buffer is initially filled with data, then
// as sound is played the notification events are signaled and more data
// is written into the buffer by calling HandleWaveStreamNotification()
//-----------------------------------------------------------------------------
CStreamingSound::CStreamingSound( LPDIRECTSOUNDBUFFER pDSBuffer, DWORD dwDSBufferSize,
CWaveFile* pWaveFile, DWORD dwNotifySize )
: CSound( &pDSBuffer, dwDSBufferSize, 1, pWaveFile, 0 )
{
m_dwLastPlayPos = 0;
m_dwPlayProgress = 0;
m_dwNotifySize = dwNotifySize;
m_dwNextWriteOffset = 0;
m_bFillNextNotificationWithSilence = FALSE;
}
//-----------------------------------------------------------------------------
// Name: CStreamingSound::~CStreamingSound()
// Desc: Destroys the class
//-----------------------------------------------------------------------------
CStreamingSound::~CStreamingSound()
{
}
//-----------------------------------------------------------------------------
// Name: CStreamingSound::HandleWaveStreamNotification()
// Desc: Handle the notification that tells us to put more wav data in the
// circular buffer
//-----------------------------------------------------------------------------
HRESULT CStreamingSound::HandleWaveStreamNotification( BOOL bLoopedPlay )
{
HRESULT hr;
DWORD dwCurrentPlayPos;
DWORD dwPlayDelta;
DWORD dwBytesWrittenToBuffer;
VOID* pDSLockedBuffer = NULL;
VOID* pDSLockedBuffer2 = NULL;
DWORD dwDSLockedBufferSize;
DWORD dwDSLockedBufferSize2;
if( m_apDSBuffer == NULL || m_pWaveFile == NULL )
return CO_E_NOTINITIALIZED;
// Restore the buffer if it was lost
BOOL bRestored;
if( FAILED( hr = RestoreBuffer( m_apDSBuffer[0], &bRestored ) ) )
return DXUT_ERR( L"RestoreBuffer", hr );
if( bRestored )
{
// The buffer was restored, so we need to fill it with new data
if( FAILED( hr = FillBufferWithSound( m_apDSBuffer[0], FALSE ) ) )
return DXUT_ERR( L"FillBufferWithSound", hr );
return S_OK;
}
// Lock the DirectSound buffer
if( FAILED( hr = m_apDSBuffer[0]->Lock( m_dwNextWriteOffset, m_dwNotifySize,
&pDSLockedBuffer, &dwDSLockedBufferSize,
&pDSLockedBuffer2, &dwDSLockedBufferSize2, 0L ) ) )
return DXUT_ERR( L"Lock", hr );
// m_dwDSBufferSize and m_dwNextWriteOffset are both multiples of m_dwNotifySize,
// it should the second buffer, so it should never be valid
if( pDSLockedBuffer2 != NULL )
return E_UNEXPECTED;
if( !m_bFillNextNotificationWithSilence )
{
// Fill the DirectSound buffer with wav data
if( FAILED( hr = m_pWaveFile->Read( (BYTE*) pDSLockedBuffer,
dwDSLockedBufferSize,
&dwBytesWrittenToBuffer ) ) )
return DXUT_ERR( L"Read", hr );
}
else
{
// Fill the DirectSound buffer with silence
FillMemory( pDSLockedBuffer, dwDSLockedBufferSize,
(BYTE)( m_pWaveFile->m_pwfx->wBitsPerSample == 8 ? 128 : 0 ) );
dwBytesWrittenToBuffer = dwDSLockedBufferSize;
}
// If the number of bytes written is less than the
// amount we requested, we have a short file.
if( dwBytesWrittenToBuffer < dwDSLockedBufferSize )
{
if( !bLoopedPlay )
{
// Fill in silence for the rest of the buffer.
FillMemory( (BYTE*) pDSLockedBuffer + dwBytesWrittenToBuffer,
dwDSLockedBufferSize - dwBytesWrittenToBuffer,
(BYTE)(m_pWaveFile->m_pwfx->wBitsPerSample == 8 ? 128 : 0 ) );
// Any future notifications should just fill the buffer with silence
m_bFillNextNotificationWithSilence = TRUE;
}
else
{
// We are looping, so reset the file and fill the buffer with wav data
DWORD dwReadSoFar = dwBytesWrittenToBuffer; // From previous call above.
while( dwReadSoFar < dwDSLockedBufferSize )
{
// This will keep reading in until the buffer is full (for very short files).
if( FAILED( hr = m_pWaveFile->ResetFile() ) )
return DXUT_ERR( L"ResetFile", hr );
if( FAILED( hr = m_pWaveFile->Read( (BYTE*)pDSLockedBuffer + dwReadSoFar,
dwDSLockedBufferSize - dwReadSoFar,
&dwBytesWrittenToBuffer ) ) )
return DXUT_ERR( L"Read", hr );
dwReadSoFar += dwBytesWrittenToBuffer;
}
}
}
// Unlock the DirectSound buffer
m_apDSBuffer[0]->Unlock( pDSLockedBuffer, dwDSLockedBufferSize, NULL, 0 );
// Figure out how much data has been played so far. When we have played
// past the end of the file, we will either need to start filling the
// buffer with silence or starting reading from the beginning of the file,
// depending if the user wants to loop the sound
if( FAILED( hr = m_apDSBuffer[0]->GetCurrentPosition( &dwCurrentPlayPos, NULL ) ) )
return DXUT_ERR( L"GetCurrentPosition", hr );
// Check to see if the position counter looped
if( dwCurrentPlayPos < m_dwLastPlayPos )
dwPlayDelta = ( m_dwDSBufferSize - m_dwLastPlayPos ) + dwCurrentPlayPos;
else
dwPlayDelta = dwCurrentPlayPos - m_dwLastPlayPos;
m_dwPlayProgress += dwPlayDelta;
m_dwLastPlayPos = dwCurrentPlayPos;
// If we are now filling the buffer with silence, then we have found the end so
// check to see if the entire sound has played, if it has then stop the buffer.
if( m_bFillNextNotificationWithSilence )
{
// We don't want to cut off the sound before it's done playing.
if( m_dwPlayProgress >= m_pWaveFile->GetSize() )
{
m_apDSBuffer[0]->Stop();
}
}
// Update where the buffer will lock (for next time)
m_dwNextWriteOffset += dwDSLockedBufferSize;
m_dwNextWriteOffset %= m_dwDSBufferSize; // Circular buffer
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: CStreamingSound::Reset()
// Desc: Resets the sound so it will begin playing at the beginning
//-----------------------------------------------------------------------------
HRESULT CStreamingSound::Reset()
{
HRESULT hr;
if( m_apDSBuffer[0] == NULL || m_pWaveFile == NULL )
return CO_E_NOTINITIALIZED;
m_dwLastPlayPos = 0;
m_dwPlayProgress = 0;
m_dwNextWriteOffset = 0;
m_bFillNextNotificationWithSilence = FALSE;
// Restore the buffer if it was lost
BOOL bRestored;
if( FAILED( hr = RestoreBuffer( m_apDSBuffer[0], &bRestored ) ) )
return DXUT_ERR( L"RestoreBuffer", hr );
if( bRestored )
{
// The buffer was restored, so we need to fill it with new data
if( FAILED( hr = FillBufferWithSound( m_apDSBuffer[0], FALSE ) ) )
return DXUT_ERR( L"FillBufferWithSound", hr );
}
m_pWaveFile->ResetFile();
return m_apDSBuffer[0]->SetCurrentPosition( 0L );
}
//-----------------------------------------------------------------------------
// Name: CWaveFile::CWaveFile()
// Desc: Constructs the class. Call Open() to open a wave file for reading.
// Then call Read() as needed. Calling the destructor or Close()
// will close the file.
//-----------------------------------------------------------------------------
CWaveFile::CWaveFile()
{
m_pwfx = NULL;
m_hmmio = NULL;
m_pResourceBuffer = NULL;
m_dwSize = 0;
m_bIsReadingFromMemory = FALSE;
}
//-----------------------------------------------------------------------------
// Name: CWaveFile::~CWaveFile()
// Desc: Destructs the class
//-----------------------------------------------------------------------------
CWaveFile::~CWaveFile()
{
Close();
if( !m_bIsReadingFromMemory )
SAFE_DELETE_ARRAY( m_pwfx );
}
//-----------------------------------------------------------------------------
// Name: CWaveFile::Open()
// Desc: Opens a wave file for reading
//-----------------------------------------------------------------------------
HRESULT CWaveFile::Open( LPWSTR strFileName, WAVEFORMATEX* pwfx, DWORD dwFlags )
{
HRESULT hr;
m_dwFlags = dwFlags;
m_bIsReadingFromMemory = FALSE;
if( m_dwFlags == WAVEFILE_READ )
{
if( strFileName == NULL )
return E_INVALIDARG;
SAFE_DELETE_ARRAY( m_pwfx );
m_hmmio = mmioOpen( strFileName, NULL, MMIO_ALLOCBUF | MMIO_READ );
if( NULL == m_hmmio )
{
HRSRC hResInfo;
HGLOBAL hResData;
DWORD dwSize;
VOID* pvRes;
// Loading it as a file failed, so try it as a resource
if( NULL == ( hResInfo = FindResource( NULL, strFileName, L"WAVE" ) ) )
{
if( NULL == ( hResInfo = FindResource( NULL, strFileName, L"WAV" ) ) )
return DXUT_ERR( L"FindResource", E_FAIL );
}
if( NULL == ( hResData = LoadResource( GetModuleHandle(NULL), hResInfo ) ) )
return DXUT_ERR( L"LoadResource", E_FAIL );
if( 0 == ( dwSize = SizeofResource( GetModuleHandle(NULL), hResInfo ) ) )
return DXUT_ERR( L"SizeofResource", E_FAIL );
if( NULL == ( pvRes = LockResource( hResData ) ) )
return DXUT_ERR( L"LockResource", E_FAIL );
m_pResourceBuffer = new CHAR[ dwSize ];
if( m_pResourceBuffer == NULL )
return DXUT_ERR( L"new", E_OUTOFMEMORY );
memcpy( m_pResourceBuffer, pvRes, dwSize );
MMIOINFO mmioInfo;
ZeroMemory( &mmioInfo, sizeof(mmioInfo) );
mmioInfo.fccIOProc = FOURCC_MEM;
mmioInfo.cchBuffer = dwSize;
mmioInfo.pchBuffer = (CHAR*) m_pResourceBuffer;
m_hmmio = mmioOpen( NULL, &mmioInfo, MMIO_ALLOCBUF | MMIO_READ );
}
if( FAILED( hr = ReadMMIO() ) )
{
// ReadMMIO will fail if its an not a wave file
mmioClose( m_hmmio, 0 );
return DXUT_ERR( L"ReadMMIO", hr );
}
if( FAILED( hr = ResetFile() ) )
return DXUT_ERR( L"ResetFile", hr );
// After the reset, the size of the wav file is m_ck.cksize so store it now
m_dwSize = m_ck.cksize;
}
else
{
m_hmmio = mmioOpen( strFileName, NULL, MMIO_ALLOCBUF |
MMIO_READWRITE |
MMIO_CREATE );
if( NULL == m_hmmio )
return DXUT_ERR( L"mmioOpen", E_FAIL );
if( FAILED( hr = WriteMMIO( pwfx ) ) )
{
mmioClose( m_hmmio, 0 );
return DXUT_ERR( L"WriteMMIO", hr );
}
if( FAILED( hr = ResetFile() ) )
return DXUT_ERR( L"ResetFile", hr );
}
return hr;
}
//-----------------------------------------------------------------------------
// Name: CWaveFile::OpenFromMemory()
// Desc: copy data to CWaveFile member variable from memory
//-----------------------------------------------------------------------------
HRESULT CWaveFile::OpenFromMemory( BYTE* pbData, ULONG ulDataSize,
WAVEFORMATEX* pwfx, DWORD dwFlags )
{
m_pwfx = pwfx;
m_ulDataSize = ulDataSize;
m_pbData = pbData;
m_pbDataCur = m_pbData;
m_bIsReadingFromMemory = TRUE;
if( dwFlags != WAVEFILE_READ )
return E_NOTIMPL;
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: CWaveFile::ReadMMIO()
// Desc: Support function for reading from a multimedia I/O stream.
// m_hmmio must be valid before calling. This function uses it to
// update m_ckRiff, and m_pwfx.
//-----------------------------------------------------------------------------
HRESULT CWaveFile::ReadMMIO()
{
MMCKINFO ckIn; // chunk info. for general use.
PCMWAVEFORMAT pcmWaveFormat; // Temp PCM structure to load in.
m_pwfx = NULL;
if( ( 0 != mmioDescend( m_hmmio, &m_ckRiff, NULL, 0 ) ) )
return DXUT_ERR( L"mmioDescend", E_FAIL );
// Check to make sure this is a valid wave file
if( (m_ckRiff.ckid != FOURCC_RIFF) ||
(m_ckRiff.fccType != mmioFOURCC('W', 'A', 'V', 'E') ) )
return DXUT_ERR( L"mmioFOURCC", E_FAIL );
// Search the input file for for the 'fmt ' chunk.
ckIn.ckid = mmioFOURCC('f', 'm', 't', ' ');
if( 0 != mmioDescend( m_hmmio, &ckIn, &m_ckRiff, MMIO_FINDCHUNK ) )
return DXUT_ERR( L"mmioDescend", E_FAIL );
// Expect the 'fmt' chunk to be at least as large as ;
// if there are extra parameters at the end, we'll ignore them
if( ckIn.cksize < (LONG) sizeof(PCMWAVEFORMAT) )
return DXUT_ERR( L"sizeof(PCMWAVEFORMAT)", E_FAIL );
// Read the 'fmt ' chunk into .
if( mmioRead( m_hmmio, (HPSTR) &pcmWaveFormat,
sizeof(pcmWaveFormat)) != sizeof(pcmWaveFormat) )
return DXUT_ERR( L"mmioRead", E_FAIL );
// Allocate the waveformatex, but if its not pcm format, read the next
// word, and thats how many extra bytes to allocate.
if( pcmWaveFormat.wf.wFormatTag == WAVE_FORMAT_PCM )
{
m_pwfx = (WAVEFORMATEX*)new CHAR[ sizeof(WAVEFORMATEX) ];
if( NULL == m_pwfx )
return DXUT_ERR( L"m_pwfx", E_FAIL );
// Copy the bytes from the pcm structure to the waveformatex structure
memcpy( m_pwfx, &pcmWaveFormat, sizeof(pcmWaveFormat) );
m_pwfx->cbSize = 0;
}
else
{
// Read in length of extra bytes.
WORD cbExtraBytes = 0L;
if( mmioRead( m_hmmio, (CHAR*)&cbExtraBytes, sizeof(WORD)) != sizeof(WORD) )
return DXUT_ERR( L"mmioRead", E_FAIL );
m_pwfx = (WAVEFORMATEX*)new CHAR[ sizeof(WAVEFORMATEX) + cbExtraBytes ];
if( NULL == m_pwfx )
return DXUT_ERR( L"new", E_FAIL );
// Copy the bytes from the pcm structure to the waveformatex structure
memcpy( m_pwfx, &pcmWaveFormat, sizeof(pcmWaveFormat) );
m_pwfx->cbSize = cbExtraBytes;
// Now, read those extra bytes into the structure, if cbExtraAlloc != 0.
if( mmioRead( m_hmmio, (CHAR*)(((BYTE*)&(m_pwfx->cbSize))+sizeof(WORD)),
cbExtraBytes ) != cbExtraBytes )
{
SAFE_DELETE( m_pwfx );
return DXUT_ERR( L"mmioRead", E_FAIL );
}
}
// Ascend the input file out of the 'fmt ' chunk.
if( 0 != mmioAscend( m_hmmio, &ckIn, 0 ) )
{
SAFE_DELETE( m_pwfx );
return DXUT_ERR( L"mmioAscend", E_FAIL );
}
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: CWaveFile::GetSize()
// Desc: Retuns the size of the read access wave file
//-----------------------------------------------------------------------------
DWORD CWaveFile::GetSize()
{
return m_dwSize;
}
//-----------------------------------------------------------------------------
// Name: CWaveFile::ResetFile()
// Desc: Resets the internal m_ck pointer so reading starts from the
// beginning of the file again
//-----------------------------------------------------------------------------
HRESULT CWaveFile::ResetFile()
{
if( m_bIsReadingFromMemory )
{
m_pbDataCur = m_pbData;
}
else
{
if( m_hmmio == NULL )
return CO_E_NOTINITIALIZED;
if( m_dwFlags == WAVEFILE_READ )
{
// Seek to the data
if( -1 == mmioSeek( m_hmmio, m_ckRiff.dwDataOffset + sizeof(FOURCC),
SEEK_SET ) )
return DXUT_ERR( L"mmioSeek", E_FAIL );
// Search the input file for the 'data' chunk.
m_ck.ckid = mmioFOURCC('d', 'a', 't', 'a');
if( 0 != mmioDescend( m_hmmio, &m_ck, &m_ckRiff, MMIO_FINDCHUNK ) )
return DXUT_ERR( L"mmioDescend", E_FAIL );
}
else
{
// Create the 'data' chunk that holds the waveform samples.
m_ck.ckid = mmioFOURCC('d', 'a', 't', 'a');
m_ck.cksize = 0;
if( 0 != mmioCreateChunk( m_hmmio, &m_ck, 0 ) )
return DXUT_ERR( L"mmioCreateChunk", E_FAIL );
if( 0 != mmioGetInfo( m_hmmio, &m_mmioinfoOut, 0 ) )
return DXUT_ERR( L"mmioGetInfo", E_FAIL );
}
}
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: CWaveFile::Read()
// Desc: Reads section of data from a wave file into pBuffer and returns
// how much read in pdwSizeRead, reading not more than dwSizeToRead.
// This uses m_ck to determine where to start reading from. So
// subsequent calls will be continue where the last left off unless
// Reset() is called.
//-----------------------------------------------------------------------------
HRESULT CWaveFile::Read( BYTE* pBuffer, DWORD dwSizeToRead, DWORD* pdwSizeRead )
{
if( m_bIsReadingFromMemory )
{
if( m_pbDataCur == NULL )
return CO_E_NOTINITIALIZED;
if( pdwSizeRead != NULL )
*pdwSizeRead = 0;
if( (BYTE*)(m_pbDataCur + dwSizeToRead) >
(BYTE*)(m_pbData + m_ulDataSize) )
{
dwSizeToRead = m_ulDataSize - (DWORD)(m_pbDataCur - m_pbData);
}
CopyMemory( pBuffer, m_pbDataCur, dwSizeToRead );
if( pdwSizeRead != NULL )
*pdwSizeRead = dwSizeToRead;
return S_OK;
}
else
{
MMIOINFO mmioinfoIn; // current status of m_hmmio
if( m_hmmio == NULL )
return CO_E_NOTINITIALIZED;
if( pBuffer == NULL || pdwSizeRead == NULL )
return E_INVALIDARG;
if( pdwSizeRead != NULL )
*pdwSizeRead = 0;
if( 0 != mmioGetInfo( m_hmmio, &mmioinfoIn, 0 ) )
return DXUT_ERR( L"mmioGetInfo", E_FAIL );
UINT cbDataIn = dwSizeToRead;
if( cbDataIn > m_ck.cksize )
cbDataIn = m_ck.cksize;
m_ck.cksize -= cbDataIn;
for( DWORD cT = 0; cT < cbDataIn; cT++ )
{
// Copy the bytes from the io to the buffer.
if( mmioinfoIn.pchNext == mmioinfoIn.pchEndRead )
{
if( 0 != mmioAdvance( m_hmmio, &mmioinfoIn, MMIO_READ ) )
return DXUT_ERR( L"mmioAdvance", E_FAIL );
if( mmioinfoIn.pchNext == mmioinfoIn.pchEndRead )
return DXUT_ERR( L"mmioinfoIn.pchNext", E_FAIL );
}
// Actual copy.
*((BYTE*)pBuffer+cT) = *((BYTE*)mmioinfoIn.pchNext);
mmioinfoIn.pchNext++;
}
if( 0 != mmioSetInfo( m_hmmio, &mmioinfoIn, 0 ) )
return DXUT_ERR( L"mmioSetInfo", E_FAIL );
if( pdwSizeRead != NULL )
*pdwSizeRead = cbDataIn;
return S_OK;
}
}
//-----------------------------------------------------------------------------
// Name: CWaveFile::Close()
// Desc: Closes the wave file
//-----------------------------------------------------------------------------
HRESULT CWaveFile::Close()
{
if( m_dwFlags == WAVEFILE_READ )
{
mmioClose( m_hmmio, 0 );
m_hmmio = NULL;
SAFE_DELETE_ARRAY( m_pResourceBuffer );
}
else
{
m_mmioinfoOut.dwFlags |= MMIO_DIRTY;
if( m_hmmio == NULL )
return CO_E_NOTINITIALIZED;
if( 0 != mmioSetInfo( m_hmmio, &m_mmioinfoOut, 0 ) )
return DXUT_ERR( L"mmioSetInfo", E_FAIL );
// Ascend the output file out of the 'data' chunk -- this will cause
// the chunk size of the 'data' chunk to be written.
if( 0 != mmioAscend( m_hmmio, &m_ck, 0 ) )
return DXUT_ERR( L"mmioAscend", E_FAIL );
// Do this here instead...
if( 0 != mmioAscend( m_hmmio, &m_ckRiff, 0 ) )
return DXUT_ERR( L"mmioAscend", E_FAIL );
mmioSeek( m_hmmio, 0, SEEK_SET );
if( 0 != (INT)mmioDescend( m_hmmio, &m_ckRiff, NULL, 0 ) )
return DXUT_ERR( L"mmioDescend", E_FAIL );
m_ck.ckid = mmioFOURCC('f', 'a', 'c', 't');
if( 0 == mmioDescend( m_hmmio, &m_ck, &m_ckRiff, MMIO_FINDCHUNK ) )
{
DWORD dwSamples = 0;
mmioWrite( m_hmmio, (HPSTR)&dwSamples, sizeof(DWORD) );
mmioAscend( m_hmmio, &m_ck, 0 );
}
// Ascend the output file out of the 'RIFF' chunk -- this will cause
// the chunk size of the 'RIFF' chunk to be written.
if( 0 != mmioAscend( m_hmmio, &m_ckRiff, 0 ) )
return DXUT_ERR( L"mmioAscend", E_FAIL );
mmioClose( m_hmmio, 0 );
m_hmmio = NULL;
}
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: CWaveFile::WriteMMIO()
// Desc: Support function for reading from a multimedia I/O stream
// pwfxDest is the WAVEFORMATEX for this new wave file.
// m_hmmio must be valid before calling. This function uses it to
// update m_ckRiff, and m_ck.
//-----------------------------------------------------------------------------
HRESULT CWaveFile::WriteMMIO( WAVEFORMATEX *pwfxDest )
{
DWORD dwFactChunk; // Contains the actual fact chunk. Garbage until WaveCloseWriteFile.
MMCKINFO ckOut1;
dwFactChunk = (DWORD)-1;
// Create the output file RIFF chunk of form type 'WAVE'.
m_ckRiff.fccType = mmioFOURCC('W', 'A', 'V', 'E');
m_ckRiff.cksize = 0;
if( 0 != mmioCreateChunk( m_hmmio, &m_ckRiff, MMIO_CREATERIFF ) )
return DXUT_ERR( L"mmioCreateChunk", E_FAIL );
// We are now descended into the 'RIFF' chunk we just created.
// Now create the 'fmt ' chunk. Since we know the size of this chunk,
// specify it in the MMCKINFO structure so MMIO doesn't have to seek
// back and set the chunk size after ascending from the chunk.
m_ck.ckid = mmioFOURCC('f', 'm', 't', ' ');
m_ck.cksize = sizeof(PCMWAVEFORMAT);
if( 0 != mmioCreateChunk( m_hmmio, &m_ck, 0 ) )
return DXUT_ERR( L"mmioCreateChunk", E_FAIL );
// Write the PCMWAVEFORMAT structure to the 'fmt ' chunk if its that type.
if( pwfxDest->wFormatTag == WAVE_FORMAT_PCM )
{
if( mmioWrite( m_hmmio, (HPSTR) pwfxDest,
sizeof(PCMWAVEFORMAT)) != sizeof(PCMWAVEFORMAT))
return DXUT_ERR( L"mmioWrite", E_FAIL );
}
else
{
// Write the variable length size.
if( (UINT)mmioWrite( m_hmmio, (HPSTR) pwfxDest,
sizeof(*pwfxDest) + pwfxDest->cbSize ) !=
( sizeof(*pwfxDest) + pwfxDest->cbSize ) )
return DXUT_ERR( L"mmioWrite", E_FAIL );
}
// Ascend out of the 'fmt ' chunk, back into the 'RIFF' chunk.
if( 0 != mmioAscend( m_hmmio, &m_ck, 0 ) )
return DXUT_ERR( L"mmioAscend", E_FAIL );
// Now create the fact chunk, not required for PCM but nice to have. This is filled
// in when the close routine is called.
ckOut1.ckid = mmioFOURCC('f', 'a', 'c', 't');
ckOut1.cksize = 0;
if( 0 != mmioCreateChunk( m_hmmio, &ckOut1, 0 ) )
return DXUT_ERR( L"mmioCreateChunk", E_FAIL );
if( mmioWrite( m_hmmio, (HPSTR)&dwFactChunk, sizeof(dwFactChunk)) !=
sizeof(dwFactChunk) )
return DXUT_ERR( L"mmioWrite", E_FAIL );
// Now ascend out of the fact chunk...
if( 0 != mmioAscend( m_hmmio, &ckOut1, 0 ) )
return DXUT_ERR( L"mmioAscend", E_FAIL );
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: CWaveFile::Write()
// Desc: Writes data to the open wave file
//-----------------------------------------------------------------------------
HRESULT CWaveFile::Write( UINT nSizeToWrite, BYTE* pbSrcData, UINT* pnSizeWrote )
{
UINT cT;
if( m_bIsReadingFromMemory )
return E_NOTIMPL;
if( m_hmmio == NULL )
return CO_E_NOTINITIALIZED;
if( pnSizeWrote == NULL || pbSrcData == NULL )
return E_INVALIDARG;
*pnSizeWrote = 0;
for( cT = 0; cT < nSizeToWrite; cT++ )
{
if( m_mmioinfoOut.pchNext == m_mmioinfoOut.pchEndWrite )
{
m_mmioinfoOut.dwFlags |= MMIO_DIRTY;
if( 0 != mmioAdvance( m_hmmio, &m_mmioinfoOut, MMIO_WRITE ) )
return DXUT_ERR( L"mmioAdvance", E_FAIL );
}
*((BYTE*)m_mmioinfoOut.pchNext) = *((BYTE*)pbSrcData+cT);
(BYTE*)m_mmioinfoOut.pchNext++;
(*pnSizeWrote)++;
}
return S_OK;
}