eeva/jamulus
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

complete redesign of ASIO conversion buffers to have greater flexibility with different ASIO buffer sizes, not yet working correctly

Browse source
This commit is contained in:
Volker Fischer 2008-07-15 22:09:48 +00:00
parent 33be3c0812
commit 2516cf62f9
2 changed files with 122 additions and 187 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
src/settings.cpp
View file

@ -78,13 +78,13 @@ void CSettings::ReadIniFile ( const QString& sFileName )
}
// sound card in number of buffers
if ( GetNumericIniSet ( IniXMLDocument, "client", "audinbuf", 0, AUD_SLIDER_LENGTH, iValue ) )
if ( GetNumericIniSet ( IniXMLDocument, "client", "audinbuf", 1, AUD_SLIDER_LENGTH, iValue ) )
{
pClient->GetSndInterface()->SetInNumBuf( iValue );
}
// sound card out number of buffers
if ( GetNumericIniSet ( IniXMLDocument, "client", "audoutbuf", 0, AUD_SLIDER_LENGTH, iValue ) )
if ( GetNumericIniSet ( IniXMLDocument, "client", "audoutbuf", 1, AUD_SLIDER_LENGTH, iValue ) )
{
pClient->GetSndInterface()->SetOutNumBuf ( iValue );
}

279
windows/sound.cpp
View file

@ -57,21 +57,14 @@ int iASIOBufferSizeMono;
HANDLE m_ASIOEvent;
// wave in
int iInCurBlockToWrite;
short* psSoundcardBuffer[MAX_SND_BUF_IN];
bool bBufferOverrun;
short* psCaptureBuffer;
int iBufferPosCapture;
bool bCaptureBufferOverrun;
// wave out
int iOutCurBlockToWrite;
short* psPlaybackBuffer[MAX_SND_BUF_OUT];
bool bBufferUnderrun;
// ASIO buffer size conversion buffer
short* psCaptureConvBuf;
int iCurPosCaptConvBuf;
short* psPlayConvBuf;
int iCurPosPlayConvBuf;
int iASIOConfBufSize;
short* psPlayBuffer;
int iBufferPosPlay;
bool bPlayBufferUnderrun;
int iCurNumSndBufIn;
int iCurNumSndBufOut;
@ -79,8 +72,8 @@ int iNewNumSndBufIn;
int iNewNumSndBufOut;
// we must implement these functions here to get access to global variables
int CSound::GetOutNumBuf() { return iCurNumSndBufOut; }
int CSound::GetInNumBuf() { return iCurNumSndBufIn; }
int CSound::GetOutNumBuf() { return iNewNumSndBufOut; }
int CSound::GetInNumBuf() { return iNewNumSndBufIn; }
/******************************************************************************\
@ -88,7 +81,7 @@ int CSound::GetInNumBuf() { return iCurNumSndBufIn; }
\******************************************************************************/
bool CSound::Read ( CVector<short>& psData )
{
int i, j;
int i;
bool bError;
// check if device must be opened or reinitialized
@ -101,46 +94,44 @@ bool CSound::Read ( CVector<short>& psData )
bChangParamIn = false;
}
// wait until data is available
if ( iInCurBlockToWrite == 0 )
// wait until enough data is available
while ( iBufferPosCapture < iBufferSizeStereo )
{
if ( bBlockingRec )
if ( bBlockingRec && !bCaptureBufferOverrun )
{
WaitForSingleObject ( m_ASIOEvent, INFINITE );
}
else
{
return false;
return true;
}
}
ASIOMutex.lock(); // get mutex lock
{
// check for buffer overrun in ASIO thread
bError = bBufferOverrun;
if ( bBufferOverrun )
bError = bCaptureBufferOverrun;
if ( bCaptureBufferOverrun )
{
// reset flag
bBufferOverrun = false;
bCaptureBufferOverrun = false;
}
// copy data from sound card in output buffer
// copy data from sound card capture buffer in function output buffer
for ( i = 0; i < iBufferSizeStereo; i++ )
{
psData[i] = psSoundcardBuffer[0][i];
psData[i] = psCaptureBuffer[i];
}
// move all other data in buffer
for ( j = 0; j < iInCurBlockToWrite - 1; j++ )
{
const int iLenCopyRegion = iBufferPosCapture - iBufferSizeStereo;
for ( i = 0; i < iBufferSizeStereo; i++ )
{
psSoundcardBuffer[j][i] = psSoundcardBuffer[j + 1][i];
}
psCaptureBuffer[i] = psCaptureBuffer[iBufferSizeStereo + i];
}
// adjust "current block to write" pointer
iInCurBlockToWrite--;
iBufferPosCapture -= iBufferSizeStereo;
// in case more than one buffer was ready, reset event
ResetEvent ( m_ASIOEvent );
@ -187,29 +178,31 @@ bool CSound::Write ( CVector<short>& psData )
ASIOMutex.lock(); // get mutex lock
{
// check for buffer underrun in ASIO thread
bError = bBufferUnderrun;
if ( bBufferUnderrun )
bError = bPlayBufferUnderrun;
if ( bPlayBufferUnderrun )
{
// reset flag
bBufferUnderrun = false;
bPlayBufferUnderrun = false;
}
// first check if buffer is available
if ( iOutCurBlockToWrite < iCurNumSndBufOut )
{
// copy stereo data from input in soundcard buffer
for ( int i = 0; i < iBufferSizeStereo; i++ )
{
psPlaybackBuffer[iOutCurBlockToWrite][i] = psData[i];
}
// first check if enough data in buffer is available
const int iPlayBufferLen = iCurNumSndBufOut * iBufferSizeStereo;
iOutCurBlockToWrite++;
}
else
if ( iBufferPosPlay + iBufferSizeStereo > iPlayBufferLen )
{
// buffer overrun, return error
bError = true;
}
else
{
// copy stereo data from function input in soundcard play buffer
for ( int i = 0; i < iBufferSizeStereo; i++ )
{
psPlayBuffer[iBufferPosPlay + i] = psData[i];
}
iBufferPosPlay += iBufferSizeStereo;
}
}
ASIOMutex.unlock();
@ -238,7 +231,7 @@ void CSound::SetOutNumBuf ( int iNewNum )
\******************************************************************************/
void CSound::InitRecordingAndPlayback ( int iNewBufferSize )
{
int i, j;
int i;
// first, stop audio and dispose ASIO buffers
ASIOStop();
@ -313,13 +306,18 @@ void CSound::InitRecordingAndPlayback ( int iNewBufferSize )
}
}
// TEST test if requested buffer size is supported by the audio hardware, if not, fire error
// TEST test if requested buffer size is supported by the audio hardware, if not, fire error
if ( iASIOBufferSizeMono != iBufferSizeMono )
{
throw CGenErr ( QString ( "Required sound card buffer size of %1 samples "
"not supported by the audio hardware." ).arg(iBufferSizeMono) );
}
// TEST
//iASIOBufferSizeMono = 256;
// prepare input channels
for ( i = 0; i < NUM_IN_OUT_CHANNELS; i++ )
{
@ -363,62 +361,31 @@ if ( iASIOBufferSizeMono != iBufferSizeMono )
iCurNumSndBufOut = iNewNumSndBufOut;
// initialize write block pointer in and overrun flag
iInCurBlockToWrite = 0;
bBufferOverrun = false;
iBufferPosCapture = 0;
bCaptureBufferOverrun = false;
// create memory for sound card buffer
for ( i = 0; i < iCurNumSndBufIn; i++ )
// create memory for capture buffer
if ( psCaptureBuffer != NULL )
{
if ( psSoundcardBuffer[i] != NULL )
{
delete[] psSoundcardBuffer[i];
}
psSoundcardBuffer[i] = new short[iBufferSizeStereo];
delete[] psCaptureBuffer;
}
psCaptureBuffer = new short[iCurNumSndBufIn * iBufferSizeStereo];
// initialize write block pointer out and underrun flag
iOutCurBlockToWrite = 0;
bBufferUnderrun = false;
iBufferPosPlay = 0;
bPlayBufferUnderrun = false;
// create memory for playback buffer
for ( j = 0; j < iCurNumSndBufOut; j++ )
// create memory for play buffer
if ( psPlayBuffer != NULL )
{
if ( psPlaybackBuffer[j] != NULL )
{
delete[] psPlaybackBuffer[j];
delete[] psPlayBuffer;
}
psPlaybackBuffer[j] = new short[iBufferSizeStereo];
psPlayBuffer = new short[iCurNumSndBufOut * iBufferSizeStereo];
// clear new buffer
for ( i = 0; i < iBufferSizeStereo; i++ )
for ( i = 0; i < iCurNumSndBufOut * iBufferSizeStereo; i++ )
{
psPlaybackBuffer[j][i] = 0;
}
}
// create memory for ASIO buffer conversion if required
if ( iASIOBufferSizeMono != iBufferSizeMono )
{
// required size: two times of one stereo buffer of the larger buffer
iASIOConfBufSize = max(4 * iASIOBufferSizeMono, 2 * iBufferSizeStereo);
if ( psCaptureConvBuf != NULL )
{
delete[] psCaptureConvBuf;
}
psCaptureConvBuf = new short[iASIOConfBufSize];
iCurPosCaptConvBuf = 0;
if ( psPlayConvBuf != NULL )
{
delete[] psPlayConvBuf;
}
psPlayConvBuf = new short[iASIOConfBufSize];
iCurPosPlayConvBuf = 0;
psPlayBuffer[i] = 0;
}
// reset event
@ -510,7 +477,6 @@ iNumDevs = 1;
pstrDevices[0] = driverInfo.name;
// check the number of available channels
long lNumInChan;
long lNumOutChan;
@ -518,7 +484,8 @@ pstrDevices[0] = driverInfo.name;
if ( ( lNumInChan < NUM_IN_OUT_CHANNELS ) ||
( lNumOutChan < NUM_IN_OUT_CHANNELS ) )
{
throw CGenErr ( "The audio device does not support required number of channels." );
throw CGenErr ( "The audio device does not support the "
"required number of channels." );
}
// query the usable buffer sizes
@ -534,7 +501,8 @@ pstrDevices[0] = driverInfo.name;
ASIOGetSampleRate ( &sampleRate );
if ( sampleRate != SND_CRD_SAMPLE_RATE )
{
throw CGenErr ( "The audio device does not support required sample rate." );
throw CGenErr ( "The audio device does not support the "
"required sample rate." );
}
// check wether the driver requires the ASIOOutputReady() optimization
@ -548,19 +516,8 @@ pstrDevices[0] = driverInfo.name;
asioCallbacks.bufferSwitchTimeInfo = &bufferSwitchTimeInfo;
// init buffer pointer to zero
for ( i = 0; i < MAX_SND_BUF_IN; i++ )
{
psSoundcardBuffer[i] = NULL;
}
for ( i = 0; i < MAX_SND_BUF_OUT; i++ )
{
psPlaybackBuffer[i] = NULL;
}
// init ASIO convertion buffers
psCaptureConvBuf = NULL;
psPlayConvBuf = NULL;
psCaptureBuffer = NULL;
psPlayBuffer = NULL;
// we use an event controlled structure
// create event
@ -573,8 +530,6 @@ pstrDevices[0] = driverInfo.name;
CSound::~CSound()
{
int i;
// cleanup ASIO stuff
ASIOStop();
ASIODisposeBuffers();
@ -582,20 +537,13 @@ CSound::~CSound()
asioDrivers->removeCurrentDriver();
// delete allocated memory
for ( i = 0; i < iCurNumSndBufIn; i++ )
if ( psCaptureBuffer != NULL )
{
if ( psSoundcardBuffer[i] != NULL )
{
delete[] psSoundcardBuffer[i];
delete[] psCaptureBuffer;
}
}
for ( i = 0; i < iCurNumSndBufOut; i++ )
if ( psPlayBuffer != NULL )
{
if ( psPlaybackBuffer[i] != NULL )
{
delete[] psPlaybackBuffer[i];
}
delete[] psPlayBuffer;
}
// close the handle for the event
@ -620,46 +568,44 @@ void CSound::bufferSwitch ( long index, ASIOBool processNow )
ASIOMutex.lock(); // get mutex lock
{
// check if special treatment is required with buffer conversion
const bool bConvBufNeeded = ( iASIOBufferSizeMono != iBufferSizeMono );
// first check buffer state of capture and play buffers
const int iCaptureBufferLen = iCurNumSndBufIn * iBufferSizeStereo;
bCaptureBufferOverrun =
( iBufferPosCapture + 2 * iASIOBufferSizeMono > iCaptureBufferLen );
// TODO implementation of ASIO conversion buffer
// psCaptureConvBuf
// iCurPosCaptConvBuf
// psPlayConvBuf
// iCurPosPlayConvBuf
bPlayBufferUnderrun = ( 2 * iASIOBufferSizeMono > iBufferPosPlay );
// perform the processing for input and output
for ( int i = 0; i < 2 * NUM_IN_OUT_CHANNELS; i++ ) // stereo
{
if ( bufferInfos[i].isInput == ASIOFalse )
if ( bufferInfos[i].isInput == ASIOTrue )
{
// CAPTURE -----------------------------------------------------
// first check if space in buffer is available
if ( !bCaptureBufferOverrun )
{
// copy new captured block in thread transfer buffer
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
// copy mono data interleaved in stereo buffer
psCaptureBuffer[iBufferPosCapture +
2 * iCurSample + bufferInfos[i].channelNum] =
((short*) bufferInfos[i].buffers[index])[iCurSample];
}
}
}
else
{
// PLAYBACK ----------------------------------------------------
if ( iOutCurBlockToWrite > 0 )
if ( !bPlayBufferUnderrun )
{
// copy data from sound card in output buffer
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
// copy interleaved stereo data in mono sound card buffer
((short*) bufferInfos[i].buffers[index])[iCurSample] =
psPlaybackBuffer[0][2 * iCurSample + bufferInfos[i].channelNum];
}
}
}
else
{
// CAPTURE -----------------------------------------------------
// first check if space in buffer is available
if ( iInCurBlockToWrite < iCurNumSndBufIn )
{
// copy new captured block in thread transfer buffer
for ( iCurSample = 0; iCurSample < iASIOBufferSizeMono; iCurSample++ )
{
// copy mono data interleaved in stereo buffer
psSoundcardBuffer[iInCurBlockToWrite][2 * iCurSample + bufferInfos[i].channelNum] =
((short*) bufferInfos[i].buffers[index])[iCurSample];
psPlayBuffer[2 * iCurSample + bufferInfos[i].channelNum];
}
}
}
@ -667,41 +613,30 @@ void CSound::bufferSwitch ( long index, ASIOBool processNow )
// Manage thread interface buffers for input and output ----------------
// playback
if ( iOutCurBlockToWrite > 0 )
// capture
if ( !bCaptureBufferOverrun )
{
// move all other data in playback buffer
for ( int j = 0; j < iOutCurBlockToWrite - 1; j++ )
{
for ( iCurSample = 0; iCurSample < iBufferSizeStereo; iCurSample++ )
{
psPlaybackBuffer[j][iCurSample] =
psPlaybackBuffer[j + 1][iCurSample];
iBufferPosCapture += 2 * iASIOBufferSizeMono;
}
// play
if ( !bPlayBufferUnderrun )
{
// move all other data in play buffer
const int iLenCopyRegion = iBufferPosPlay - 2 * iASIOBufferSizeMono;
for ( iCurSample = 0; iCurSample < iLenCopyRegion; iCurSample++ )
{
psPlayBuffer[iCurSample] =
psPlayBuffer[2 * iASIOBufferSizeMono + iCurSample];
}
// adjust "current block to write" pointer
iOutCurBlockToWrite--;
}
else
{
// set buffer underrun flag
bBufferUnderrun = true;
iBufferPosPlay -= 2 * iASIOBufferSizeMono;
}
// capture
if ( iInCurBlockToWrite < iCurNumSndBufIn )
{
iInCurBlockToWrite++;
}
else
{
// set buffer overrun flag
bBufferOverrun = true;
}
// finally if the driver supports the ASIOOutputReady() optimization,
// do it here, all data are in place
// do it here, all data are in place -----------------------------------
if ( bASIOPostOutput )
{
ASIOOutputReady();