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Audio: Re-enabled PortAudio backend

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The PortAudio backend lay down broken for quite a while. However as it
offers much better realtime capabilities on Windows compared to SDL, I
started to resurrect it, removed support for PortAudio < 1.9 and fixed
various bugs and crashes.
(cherry picked from commit 4641fcc6d3)
This commit is contained in:
Tobias Doerffel
2011-01-02 00:54:43 +01:00
parent 7b68713008
commit 16c2b767af
3 changed files with 75 additions and 149 deletions
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162
src/core/audio/AudioPortAudio.cpp
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@@ -2,6 +2,7 @@
* AudioPortAudio.cpp - device-class that performs PCM-output via PortAudio
*
* Copyright (c) 2008 Csaba Hruska <csaba.hruska/at/gmail.com>
* Copyright (c) 2010 Tobias Doerffel <tobydox/at/users.sourceforge.net>
*
* This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
*
@@ -55,6 +56,7 @@ AudioPortAudio::AudioPortAudio( bool & _success_ful, mixer * _mixer ) :
"channels" ).toInt(),
DEFAULT_CHANNELS, SURROUND_CHANNELS ),
_mixer ),
m_paStream( NULL ),
m_wasPAInitError( false ),
m_outBuf( CPU::allocFrames( getMixer()->framesPerPeriod() ) ),
m_outBufPos( 0 ),
@@ -77,10 +79,8 @@ AudioPortAudio::AudioPortAudio( bool & _success_ful, mixer * _mixer ) :
return;
}
const QString& backend = configManager::inst()->value( "audioportaudio",
"backend" );
const QString& device = configManager::inst()->value( "audioportaudio",
"device" );
const QString& backend = configManager::inst()->value( "audioportaudio", "backend" );
const QString& device = configManager::inst()->value( "audioportaudio", "device" );
PaDeviceIndex inDevIdx = -1;
PaDeviceIndex outDevIdx = -1;
@@ -88,12 +88,8 @@ AudioPortAudio::AudioPortAudio( bool & _success_ful, mixer * _mixer ) :
for( int i = 0; i < Pa_GetDeviceCount(); ++i )
{
di = Pa_GetDeviceInfo( i );
#ifdef PORTAUDIO_V19
if( di->name == device &&
Pa_GetHostApiInfo( di->hostApi )->name == backend )
#else
if( di->name == device )
#endif
{
inDevIdx = i;
outDevIdx = i;
@@ -110,83 +106,74 @@ AudioPortAudio::AudioPortAudio( bool & _success_ful, mixer * _mixer ) :
outDevIdx = Pa_GetDefaultOutputDevice();
}
if( inDevIdx < 0 || outDevIdx < 0)
if( inDevIdx < 0 || outDevIdx < 0 )
{
return;
}
double inLatency = (double)getMixer()->framesPerPeriod() / (double)sampleRate();
double outLatency = (double)getMixer()->framesPerPeriod() / (double)sampleRate();
// FIXME: remove this
#ifdef PORTAUDIO_V19
inLatency = Pa_GetDeviceInfo( inDevIdx )->defaultLowInputLatency;
outLatency = Pa_GetDeviceInfo( outDevIdx )->defaultLowOutputLatency;
#endif
int samples = qMax( 1024, (int)getMixer()->framesPerPeriod() );
double inLatency = 0;//(double)getMixer()->framesPerPeriod() / (double)sampleRate();
double outLatency = 0;//(double)getMixer()->framesPerPeriod() / (double)sampleRate();
//inLatency = Pa_GetDeviceInfo( inDevIdx )->defaultLowInputLatency;
//outLatency = Pa_GetDeviceInfo( outDevIdx )->defaultLowOutputLatency;
const int samples = getMixer()->framesPerPeriod();
// Configure output parameters.
m_outputParameters.device = outDevIdx;
m_outputParameters.channelCount = channels();
m_outputParameters.sampleFormat = paFloat32; // 32 bit floating point output
m_outputParameters.suggestedLatency = inLatency;
m_outputParameters.suggestedLatency = outLatency;
m_outputParameters.hostApiSpecificStreamInfo = NULL;
// Configure input parameters.
m_inputParameters.device = inDevIdx;
m_inputParameters.channelCount = DEFAULT_CHANNELS;
m_inputParameters.sampleFormat = paFloat32; // 32 bit floating point input
m_inputParameters.suggestedLatency = outLatency;
m_inputParameters.suggestedLatency = inLatency;
m_inputParameters.hostApiSpecificStreamInfo = NULL;
// Open an audio I/O stream.
#ifdef PORTAUDIO_V19
err = Pa_OpenStream(
&m_paStream,
&m_inputParameters, // The input parameter
supportsCapture() ? &m_inputParameters : NULL, // The input parameter
&m_outputParameters, // The outputparameter
sampleRate(),
samples,
paNoFlag, // Don't use any flags
_process_callback, // our callback function
this );
#else
err = Pa_OpenStream(
&m_paStream,
m_inputParameters.device,
m_inputParameters.channelCount,
m_inputParameters.sampleFormat,
NULL,
m_outputParameters.device,
m_outputParameters.channelCount,
m_outputParameters.sampleFormat,
NULL,
sampleRate(),
samples,
0,
paNoFlag, // Don't use any flags
_process_callback, // our callback function
this );
#endif
if( err == paInvalidDevice && sampleRate() < 48000 )
{
printf("Pa_OpenStream() failed with 44,1 KHz, trying again with 48 KHz\n");
// some backends or drivers do not allow 32 bit floating point data
// with a samplerate of 44100 Hz
setSampleRate( 48000 );
err = Pa_OpenStream(
&m_paStream,
supportsCapture() ? &m_inputParameters : NULL, // The input parameter
&m_outputParameters, // The outputparameter
sampleRate(),
samples,
paNoFlag, // Don't use any flags
_process_callback, // our callback function
this );
}
if( err != paNoError )
{
printf( "Couldn't open PortAudio: %s\n", Pa_GetErrorText( err ) );
return;
}
// FIXME: remove this debug info
#ifdef PORTAUDIO_V19
printf( "Input device: '%s' backend: '%s'\n", Pa_GetDeviceInfo( inDevIdx )->name, Pa_GetHostApiInfo( Pa_GetDeviceInfo( inDevIdx )->hostApi )->name );
printf( "Output device: '%s' backend: '%s'\n", Pa_GetDeviceInfo( outDevIdx )->name, Pa_GetHostApiInfo( Pa_GetDeviceInfo( outDevIdx )->hostApi )->name );
#else
printf( "Input device: '%s'\n", Pa_GetDeviceInfo( inDevIdx )->name );
printf( "Output device: '%s'\n", Pa_GetDeviceInfo( outDevIdx )->name );
#endif
m_stopSemaphore.acquire();
m_supportsCapture = true;
// TODO: debug Mixer::pushInputFrames()
//m_supportsCapture = true;
_success_ful = true;
}
@@ -225,7 +212,7 @@ void AudioPortAudio::startProcessing()
void AudioPortAudio::stopProcessing()
{
if( Pa_IsStreamActive( m_paStream ) )
if( m_paStream && Pa_IsStreamActive( m_paStream ) )
{
m_stopSemaphore.acquire();
@@ -247,36 +234,17 @@ void AudioPortAudio::applyQualitySettings()
{
setSampleRate( engine::getMixer()->processingSampleRate() );
int samples = qMax( 1024, (int)getMixer()->framesPerPeriod() );
int samples = getMixer()->framesPerPeriod();
#ifdef PORTAUDIO_V19
PaError err = Pa_OpenStream(
PaError err = Pa_OpenStream(
&m_paStream,
&m_inputParameters, // The input parameter
supportsCapture() ? &m_inputParameters : NULL, // The input parameter
&m_outputParameters, // The outputparameter
sampleRate(),
samples,
paNoFlag, // Don't use any flags
_process_callback, // our callback function
this );
#else
PaError err = Pa_OpenStream(
&m_paStream,
m_inputParameters.device,
m_inputParameters.channelCount,
m_inputParameters.sampleFormat,
NULL,
m_outputParameters.device,
m_outputParameters.channelCount,
m_outputParameters.sampleFormat,
NULL,
sampleRate(),
samples,
0,
paNoFlag, // Don't use any flags
_process_callback, // our callback function
this );
#endif
if( err != paNoError )
{
@@ -284,14 +252,22 @@ void AudioPortAudio::applyQualitySettings()
return;
}
}
AudioDevice::applyQualitySettings();
}
int AudioPortAudio::process_callback(
const float *_inputBuffer,
float * _outputBuffer,
unsigned long _framesPerBuffer )
{
getMixer()->pushInputFrames( (sampleFrame*)_inputBuffer, _framesPerBuffer );
if( supportsCapture() )
{
getMixer()->pushInputFrames( (sampleFrame*)_inputBuffer,
_framesPerBuffer );
}
if( m_stopped )
{
@@ -342,7 +318,6 @@ int AudioPortAudio::process_callback(
#ifdef PORTAUDIO_V19
int AudioPortAudio::_process_callback(
const void *_inputBuffer,
void * _outputBuffer,
@@ -353,12 +328,7 @@ int AudioPortAudio::_process_callback(
{
Q_UNUSED(_timeInfo);
Q_UNUSED(_statusFlags);
#else
int AudioPortAudio::_process_callback( void *_inputBuffer, void *_outputBuffer,
unsigned long _framesPerBuffer, PaTimestamp _outTime, void *_arg )
{
#endif
AudioPortAudio * _this = static_cast<AudioPortAudio *> (_arg);
return _this->process_callback( (const float*)_inputBuffer,
(float*)_outputBuffer, _framesPerBuffer );
@@ -373,7 +343,7 @@ void AudioPortAudioSetupUtil::updateDevices()
printf( "Couldn't initialize PortAudio: %s\n", Pa_GetErrorText( err ) );
return;
}
#ifdef PORTAUDIO_V19
// get active backend
const QString& backend = m_backendModel.currentText();
int hostApi = 0;
@@ -387,7 +357,6 @@ void AudioPortAudioSetupUtil::updateDevices()
break;
}
}
#endif
// get devices for selected backend
m_deviceModel.clear();
@@ -395,14 +364,10 @@ void AudioPortAudioSetupUtil::updateDevices()
for( int i = 0; i < Pa_GetDeviceCount(); ++i )
{
di = Pa_GetDeviceInfo( i );
#ifdef PORTAUDIO_V19
if( di->hostApi == hostApi )
{
m_deviceModel.addItem( di->name );
}
#else
m_deviceModel.addItem( di->name );
#endif
}
Pa_Terminate();
}
@@ -425,27 +390,23 @@ void AudioPortAudioSetupUtil::updateChannels()
AudioPortAudio::setupWidget::setupWidget( QWidget * _parent ) :
audioDevice::setupWidget( AudioPortAudio::name(), _parent )
AudioDevice::setupWidget( AudioPortAudio::name(), _parent )
{
m_backend = new comboBox( this, "BACKEND" );
m_backend->setGeometry( 52, 15, 120, 20 );
m_backend->setGeometry( 64, 15, 260, 20 );
QLabel * backend_lbl = new QLabel( tr( "BACKEND" ), this );
backend_lbl->setFont( pointSize<6>( backend_lbl->font() ) );
backend_lbl->move( 10, 17 );
#ifndef PORTAUDIO_V19
m_backend->hide();
backend_lbl->hide();
#endif
backend_lbl->move( 8, 18 );
m_device = new comboBox( this, "DEVICE" );
m_device->setGeometry( 52, 35, 250, 20 );
m_device->setGeometry( 64, 35, 260, 20 );
QLabel * dev_lbl = new QLabel( tr( "DEVICE" ), this );
dev_lbl->setFont( pointSize<6>( dev_lbl->font() ) );
dev_lbl->move( 10, 37 );
dev_lbl->move( 8, 38 );
lcdSpinBoxModel * m = new lcdSpinBoxModel( );
/* lcdSpinBoxModel * m = new lcdSpinBoxModel( );
m->setRange( DEFAULT_CHANNELS, SURROUND_CHANNELS );
m->setStep( 2 );
m->setValue( configManager::inst()->value( "audioportaudio",
@@ -454,7 +415,7 @@ AudioPortAudio::setupWidget::setupWidget( QWidget * _parent ) :
m_channels = new lcdSpinBox( 1, this );
m_channels->setModel( m );
m_channels->setLabel( tr( "CHANNELS" ) );
m_channels->move( 308, 20 );
m_channels->move( 308, 20 );*/
// Setup models
PaError err = Pa_Initialize();
@@ -464,16 +425,13 @@ AudioPortAudio::setupWidget::setupWidget( QWidget * _parent ) :
}
// todo: setup backend model
#ifdef PORTAUDIO_V19
const PaHostApiInfo * hi;
for( int i = 0; i < Pa_GetHostApiCount(); ++i )
{
hi = Pa_GetHostApiInfo( i );
m_setupUtil.m_backendModel.addItem( hi->name );
}
#else
m_setupUtil.m_backendModel.addItem( "" );
#endif
Pa_Terminate();
@@ -522,8 +480,8 @@ void AudioPortAudio::setupWidget::saveSettings()
m_setupUtil.m_backendModel.currentText() );
configManager::inst()->setValue( "audioportaudio", "device",
m_setupUtil.m_deviceModel.currentText() );
configManager::inst()->setValue( "audioportaudio", "channels",
QString::number( m_channels->value<int>() ) );
/* configManager::inst()->setValue( "audioportaudio", "channels",
QString::number( m_channels->value<int>() ) );*/
}