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reorganize ASIO sound interface, not yet ready!

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This commit is contained in:
Volker Fischer 2009-03-05 15:22:54 +00:00
parent bc43ed3605
commit 56c91ce201
3 changed files with 112 additions and 100 deletions
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3
src/clientsettingsdlgbase.ui
View file

@ -413,6 +413,9 @@
</item>
<item>
<layout class="QHBoxLayout" >
<property name="spacing" >
<number>1</number>
</property>
<item>
<widget class="QLabel" name="TextLabelOverallDelay" >
<property name="sizePolicy" >

207
windows/sound.cpp
View file

@ -60,6 +60,12 @@ CSound* pSound;
\******************************************************************************/
void CSound::SetDev ( const int iNewDev )
{
// TODO do check if sound interface is running here, take action
// check if an ASIO driver was already initialized
if ( lCurDev >= 0 )
{
@ -86,6 +92,7 @@ void CSound::SetDev ( const int iNewDev )
throw CGenErr ( strErrorMessage.c_str() );
}
Init ( iBufferSizeStereo );
}
else
@ -120,6 +127,31 @@ void CSound::SetDev ( const int iNewDev )
}
}
bool CSound::LoadAndInitializeFirstValidDriver()
{
// load and initialize first valid ASIO driver
bool bValidDriverDetected = false;
int iCurDriverIdx = 0;
// try all available drivers in the system ("lNumDevs" devices)
while ( !bValidDriverDetected && ( iCurDriverIdx < lNumDevs ) )
{
if ( LoadAndInitializeDriver ( iCurDriverIdx ).empty() )
{
// initialization was successful
bValidDriverDetected = true;
// store ID of selected driver
lCurDev = iCurDriverIdx;
}
// try next driver
iCurDriverIdx++;
}
return bValidDriverDetected;
}
std::string CSound::LoadAndInitializeDriver ( int iDriverIdx )
{
// first check and correct input parameter
@ -138,62 +170,40 @@ std::string CSound::LoadAndInitializeDriver ( int iDriverIdx )
return "The audio driver could not be initialized.";
}
const std::string strStat = PrepareDriver();
// check device capabilities if it fullfills our requirements
const std::string strStat = CheckDeviceCapabilities();
// store ID of selected driver if initialization was successful
if ( strStat.empty() )
{
lCurDev = iDriverIdx;
}
else
{
// driver cannot be used, clean up
asioDrivers->removeCurrentDriver();
}
return strStat;
}
bool CSound::LoadAndInitializeFirstValidDriver()
std::string CSound::CheckDeviceCapabilities()
{
// load and initialize first valid ASIO driver
bool bValidDriverDetected = false;
int iCurDriverIdx = 0;
// This function checks if our required input/output channel
// properties are supported by the selected device. If the return
// string is empty, the device can be used, otherwise the error
// message is returned.
// try all available drivers in the system ("lNumDevs" devices)
while ( !bValidDriverDetected && iCurDriverIdx < lNumDevs )
// check the sample rate
const ASIOError CanSaRateReturn = ASIOCanSampleRate ( SND_CRD_SAMPLE_RATE );
if ( ( CanSaRateReturn == ASE_NoClock ) ||
( CanSaRateReturn == ASE_NotPresent ) )
{
if ( loadAsioDriver ( cDriverNames[iCurDriverIdx] ) )
{
if ( ASIOInit ( &driverInfo ) == ASE_OK )
{
if ( PrepareDriver().empty() )
{
// initialization was successful
bValidDriverDetected = true;
// store ID of selected driver
lCurDev = iCurDriverIdx;
}
else
{
// driver could not be loaded, free memory
asioDrivers->removeCurrentDriver();
}
}
else
{
// driver could not be loaded, free memory
asioDrivers->removeCurrentDriver();
}
}
// try next driver
iCurDriverIdx++;
// return error string
return "The audio device does not support the "
"required sample rate.";
}
return bValidDriverDetected;
}
std::string CSound::PrepareDriver()
{
int i;
// check the number of available channels
long lNumInChan;
long lNumOutChan;
@ -201,56 +211,24 @@ std::string CSound::PrepareDriver()
if ( ( lNumInChan < NUM_IN_OUT_CHANNELS ) ||
( lNumOutChan < NUM_IN_OUT_CHANNELS ) )
{
// clean up and return error string
ASIOExit();
asioDrivers->removeCurrentDriver();
// return error string
return "The audio device does not support the "
"required number of channels.";
}
// set the sample rate and check if sample rate is supported
ASIOSetSampleRate ( SND_CRD_SAMPLE_RATE );
ASIOSampleRate sampleRate;
ASIOGetSampleRate ( &sampleRate );
if ( sampleRate != SND_CRD_SAMPLE_RATE )
// check sample format
for ( int i = 0; i < 2 * NUM_IN_OUT_CHANNELS; i++ )
{
// clean up and return error string
ASIOExit();
asioDrivers->removeCurrentDriver();
return "The audio device does not support the "
"required sample rate.";
}
// TEST
iASIOBufferSizeMono = GetActualBufferSize ( iBufferSizeMono );
for ( i = 0; i < NUM_IN_OUT_CHANNELS; i++ )
{
// prepare input channels
bufferInfos[i].isInput = ASIOTrue;
bufferInfos[i].channelNum = i;
bufferInfos[i].buffers[0] = 0;
bufferInfos[i].buffers[1] = 0;
// prepare output channels
bufferInfos[NUM_IN_OUT_CHANNELS + i].isInput = ASIOFalse;
bufferInfos[NUM_IN_OUT_CHANNELS + i].channelNum = i;
bufferInfos[NUM_IN_OUT_CHANNELS + i].buffers[0] = 0;
bufferInfos[NUM_IN_OUT_CHANNELS + i].buffers[1] = 0;
}
// create and activate ASIO buffers (buffer size in samples)
ASIOCreateBuffers ( bufferInfos, 2 /* in/out */ * NUM_IN_OUT_CHANNELS /* stereo */,
iASIOBufferSizeMono, &asioCallbacks );
// now get some buffer details
for ( i = 0; i < 2 * NUM_IN_OUT_CHANNELS; i++ )
{
channelInfos[i].channel = bufferInfos[i].channelNum;
channelInfos[i].isInput = bufferInfos[i].isInput;
// check all used input and output channels
channelInfos[i].channel = i % NUM_IN_OUT_CHANNELS;
if ( i < NUM_IN_OUT_CHANNELS )
{
channelInfos[i].isInput = ASIOTrue;
}
else
{
channelInfos[i].isInput = ASIOFalse;
}
ASIOGetChannelInfo ( &channelInfos[i] );
// only 16/24/32 LSB is supported
@ -258,18 +236,12 @@ iASIOBufferSizeMono = GetActualBufferSize ( iBufferSizeMono );
( channelInfos[i].type != ASIOSTInt24LSB ) &&
( channelInfos[i].type != ASIOSTInt32LSB ) )
{
// clean up and return error string
ASIODisposeBuffers();
ASIOExit();
asioDrivers->removeCurrentDriver();
return "Required audio sample format not available (16/24/32 bit LSB).";
// return error string
return "Required audio sample format not "
"available (16/24/32 bit LSB).";
}
}
// check wether the driver requires the ASIOOutputReady() optimization
// (can be used by the driver to reduce output latency by one block)
bASIOPostOutput = ( ASIOOutputReady() == ASE_OK );
return "";
}
@ -359,9 +331,6 @@ int CSound::Init ( const int iNewPrefMonoBufferSize )
iBufferSizeMono = iNewPrefMonoBufferSize;
iBufferSizeStereo = 2 * iBufferSizeMono;
// TEST
PrepareDriver();
// TODO possible BUG!!!!!!!!!!!!!!!!!!!!!
// iBufferSizeMono must not be the same as iASIOBufferSizeMono
@ -369,6 +338,47 @@ PrepareDriver();
// create memory for intermediate audio buffer
vecsTmpAudioSndCrdStereo.Init ( iBufferSizeStereo );
int i;
// set the sample rate and check if sample rate is supported
ASIOSetSampleRate ( SND_CRD_SAMPLE_RATE );
// TEST
iASIOBufferSizeMono = GetActualBufferSize ( iBufferSizeMono );
for ( i = 0; i < NUM_IN_OUT_CHANNELS; i++ )
{
// prepare input channels
bufferInfos[i].isInput = ASIOTrue;
bufferInfos[i].channelNum = i;
bufferInfos[i].buffers[0] = 0;
bufferInfos[i].buffers[1] = 0;
// prepare output channels
bufferInfos[NUM_IN_OUT_CHANNELS + i].isInput = ASIOFalse;
bufferInfos[NUM_IN_OUT_CHANNELS + i].channelNum = i;
bufferInfos[NUM_IN_OUT_CHANNELS + i].buffers[0] = 0;
bufferInfos[NUM_IN_OUT_CHANNELS + i].buffers[1] = 0;
}
// create and activate ASIO buffers (buffer size in samples)
ASIOCreateBuffers ( bufferInfos, 2 /* in/out */ * NUM_IN_OUT_CHANNELS /* stereo */,
iASIOBufferSizeMono, &asioCallbacks );
// check wether the driver requires the ASIOOutputReady() optimization
// (can be used by the driver to reduce output latency by one block)
bASIOPostOutput = ( ASIOOutputReady() == ASE_OK );
}
ASIOMutex.unlock();
@ -407,7 +417,6 @@ pSound = this;
{
throw CGenErr ( "No ASIO audio device (driver) found." );
}
asioDrivers->removeCurrentDriver();
// init device index with illegal value to show that driver is not initialized

2
windows/sound.h
View file

@ -73,8 +73,8 @@ public:
protected:
bool LoadAndInitializeFirstValidDriver();
std::string LoadAndInitializeDriver ( int iIdx );
std::string PrepareDriver();
int GetActualBufferSize ( const int iDesiredBufferSizeMono );
std::string CheckDeviceCapabilities();
// audio hardware buffer info
struct sHWBufferInfo