int main(void)
{
int i, numDevices, defaultDisplayed;
const PaDeviceInfo *deviceInfo;
PaStreamParameters inputParameters, outputParameters;
PaError err;
err = Pa_Initialize();
if( err != paNoError )
{
printf( "ERROR: Pa_Initialize returned 0x%x\n", err );
goto error;
}
printf( "PortAudio version: 0x%08X\n", Pa_GetVersion());
printf( "Version text: '%s'\n", Pa_GetVersionInfo()->versionText );
numDevices = Pa_GetDeviceCount();
if( numDevices < 0 )
{
printf( "ERROR: Pa_GetDeviceCount returned 0x%x\n", numDevices );
err = numDevices;
goto error;
}
printf( "Number of devices = %d\n", numDevices );
for( i=0; i<numDevices; i++ )
{
deviceInfo = Pa_GetDeviceInfo( i );
printf( "--------------------------------------- device #%d\n", i );
/* Mark global and API specific default devices */
defaultDisplayed = 0;
if( i == Pa_GetDefaultInputDevice() )
{
printf( "[ Default Input" );
defaultDisplayed = 1;
}
else if( i == Pa_GetHostApiInfo( deviceInfo->hostApi )->defaultInputDevice )
{
const PaHostApiInfo *hostInfo = Pa_GetHostApiInfo( deviceInfo->hostApi );
printf( "[ Default %s Input", hostInfo->name );
defaultDisplayed = 1;
}
if( i == Pa_GetDefaultOutputDevice() )
{
printf( (defaultDisplayed ? "," : "[") );
printf( " Default Output" );
defaultDisplayed = 1;
}
else if( i == Pa_GetHostApiInfo( deviceInfo->hostApi )->defaultOutputDevice )
{
const PaHostApiInfo *hostInfo = Pa_GetHostApiInfo( deviceInfo->hostApi );
printf( (defaultDisplayed ? "," : "[") );
printf( " Default %s Output", hostInfo->name );
defaultDisplayed = 1;
}
if( defaultDisplayed )
printf( " ]\n" );
/* print device info fields */
#ifdef WIN32
{ /* Use wide char on windows, so we can show UTF-8 encoded device names */
wchar_t wideName[MAX_PATH];
MultiByteToWideChar(CP_UTF8, 0, deviceInfo->name, -1, wideName, MAX_PATH-1);
wprintf( L"Name = %s\n", wideName );
}
#else
printf( "Name = %s\n", deviceInfo->name );
#endif
printf( "Host API = %s\n", Pa_GetHostApiInfo( deviceInfo->hostApi )->name );
printf( "Max inputs = %d", deviceInfo->maxInputChannels );
printf( ", Max outputs = %d\n", deviceInfo->maxOutputChannels );
printf( "Default low input latency = %8.4f\n", deviceInfo->defaultLowInputLatency );
printf( "Default low output latency = %8.4f\n", deviceInfo->defaultLowOutputLatency );
printf( "Default high input latency = %8.4f\n", deviceInfo->defaultHighInputLatency );
printf( "Default high output latency = %8.4f\n", deviceInfo->defaultHighOutputLatency );
#ifdef WIN32
#if PA_USE_ASIO
/* ASIO specific latency information */
if( Pa_GetHostApiInfo( deviceInfo->hostApi )->type == paASIO ){
long minLatency, maxLatency, preferredLatency, granularity;
err = PaAsio_GetAvailableBufferSizes( i,
&minLatency, &maxLatency, &preferredLatency, &granularity );
printf( "ASIO minimum buffer size = %ld\n", minLatency );
printf( "ASIO maximum buffer size = %ld\n", maxLatency );
printf( "ASIO preferred buffer size = %ld\n", preferredLatency );
if( granularity == -1 )
printf( "ASIO buffer granularity = power of 2\n" );
else
printf( "ASIO buffer granularity = %ld\n", granularity );
}
#endif /* PA_USE_ASIO */
#endif /* WIN32 */
printf( "Default sample rate = %8.2f\n", deviceInfo->defaultSampleRate );
/* poll for standard sample rates */
inputParameters.device = i;
inputParameters.channelCount = deviceInfo->maxInputChannels;
inputParameters.sampleFormat = paInt16;
inputParameters.suggestedLatency = 0; /* ignored by Pa_IsFormatSupported() */
inputParameters.hostApiSpecificStreamInfo = NULL;
outputParameters.device = i;
outputParameters.channelCount = deviceInfo->maxOutputChannels;
outputParameters.sampleFormat = paInt16;
outputParameters.suggestedLatency = 0; /* ignored by Pa_IsFormatSupported() */
outputParameters.hostApiSpecificStreamInfo = NULL;
if( inputParameters.channelCount > 0 )
{
printf("Supported standard sample rates\n for half-duplex 16 bit %d channel input = \n",
inputParameters.channelCount );
PrintSupportedStandardSampleRates( &inputParameters, NULL );
}
if( outputParameters.channelCount > 0 )
{
printf("Supported standard sample rates\n for half-duplex 16 bit %d channel output = \n",
outputParameters.channelCount );
PrintSupportedStandardSampleRates( NULL, &outputParameters );
}
if( inputParameters.channelCount > 0 && outputParameters.channelCount > 0 )
{
printf("Supported standard sample rates\n for full-duplex 16 bit %d channel input, %d channel output = \n",
inputParameters.channelCount, outputParameters.channelCount );
PrintSupportedStandardSampleRates( &inputParameters, &outputParameters );
}
}
Pa_Terminate();
printf("----------------------------------------------\n");
return 0;
error:
Pa_Terminate();
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
return err;
} // main
PaError IPortAudio::configure_InputDevice(long FrameSize)
{
#if defined(TARGET_WINDOWS)
// configure HostAPI audio channels
if(m_UsedInputHostAPI == paASIO)
{ // Configure ASIO device
m_InputParameters.hostApiSpecificStreamInfo = new PaAsioStreamInfo;
memset(m_InputParameters.hostApiSpecificStreamInfo, 0, sizeof(PaAsioStreamInfo));
((PaAsioStreamInfo*)m_InputParameters.hostApiSpecificStreamInfo)->size = sizeof(PaAsioStreamInfo);
((PaAsioStreamInfo*)m_InputParameters.hostApiSpecificStreamInfo)->hostApiType = paASIO;
((PaAsioStreamInfo*)m_InputParameters.hostApiSpecificStreamInfo)->version = 1;
((PaAsioStreamInfo*)m_InputParameters.hostApiSpecificStreamInfo)->flags = paAsioUseChannelSelectors;
((PaAsioStreamInfo*)m_InputParameters.hostApiSpecificStreamInfo)->channelSelectors = new int[m_InputParameters.channelCount];
for(int ch = 0; ch < m_InputParameters.channelCount; ch++)
{
((PaAsioStreamInfo*)m_InputParameters.hostApiSpecificStreamInfo)->channelSelectors[ch] = ch;
}
}
else if(m_UsedInputHostAPI == paWASAPI)
{
if(m_InputParameters.channelCount < m_InputDeviceInfo.deviceInfo->maxInputChannels)
{ // try to set WASAPI exclusive mode
m_InputParameters.hostApiSpecificStreamInfo = new PaWasapiStreamInfo;
memset(m_InputParameters.hostApiSpecificStreamInfo, 0, sizeof(PaWasapiStreamInfo));
((PaWasapiStreamInfo*)m_InputParameters.hostApiSpecificStreamInfo)->hostApiType = paWASAPI;
((PaWasapiStreamInfo*)m_InputParameters.hostApiSpecificStreamInfo)->version = 1;
((PaWasapiStreamInfo*)m_InputParameters.hostApiSpecificStreamInfo)->size = sizeof(PaWasapiStreamInfo);
((PaWasapiStreamInfo*)m_InputParameters.hostApiSpecificStreamInfo)->flags = paWinWasapiExclusive;
PaWinWaveFormat waveFormat;
if(PaWasapi_GetDeviceDefaultFormat(&waveFormat, sizeof(PaWinWaveFormat), m_InputDeviceInfo.paDeviceIdx) < 0)
{
return paIncompatibleHostApiSpecificStreamInfo;
}
// TODO: check how to set channelMask and how to use waveFormat information
//((PaWasapiStreamInfo*)m_InputParameters.hostApiSpecificStreamInfo)->channelMask =
}
else
{
m_InputParameters.hostApiSpecificStreamInfo = NULL;
}
}
else
{
m_InputParameters.hostApiSpecificStreamInfo = NULL;
}
// configure device latency/bufferSize
if(m_UsedInputHostAPI == paASIO)
{
long minBufferSizeFrames;
long maxBufferSizeFrames;
long preferredBufferSizeFrames;
long granularity;
PaError paErr = PaAsio_GetAvailableBufferSizes(m_InputParameters.device, &minBufferSizeFrames, &maxBufferSizeFrames, &preferredBufferSizeFrames, &granularity);
if(paErr != paNoError)
{
return paErr;
}
cout << "ASIO minimum buffer size " << minBufferSizeFrames << endl;
cout << "ASIO maximum buffer size " << maxBufferSizeFrames << endl;
cout << "ASIO preferred buffer size " << preferredBufferSizeFrames << endl;
if(granularity == -1)
{
cout << "ASIO buffer granularity is power of 2" << endl;
}
else
{
cout << "ASIO buffer granularity: " << granularity << endl;
}
if(FrameSize < 0)
{
m_InputFrameSize = (unsigned long)preferredBufferSizeFrames;
}
else if(FrameSize > maxBufferSizeFrames)
{
m_InputFrameSize = (unsigned long)maxBufferSizeFrames;
}
else
{
m_InputFrameSize = (unsigned long)FrameSize;
}
}
else
{
if(FrameSize <= 0)
{
FrameSize = 2048;
}
else
{
m_InputFrameSize = FrameSize;
}
}
#endif
return paNoError;
}
