added support for PortAudio
git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@1507 0778d3d1-df1d-0410-868b-ea421aaaa00d
This commit is contained in:
Tobias Doerffel
472
src/core/audio/audio_portaudio.cpp
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472
src/core/audio/audio_portaudio.cpp
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@@ -0,0 +1,472 @@
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#ifndef SINGLE_SOURCE_COMPILE
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/*
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* audio_portaudio.cpp - device-class that performs PCM-output via PortAudio
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*
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* Copyright (c) 2008 Csaba Hruska <csaba.hruska/at/gmail.com>
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*
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* This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program (see COPYING); if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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*/
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#include "audio_portaudio.h"
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#ifndef LMMS_HAVE_PORTAUDIO
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void audioPortAudioSetupUtil::updateDevices( void )
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{
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}
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void audioPortAudioSetupUtil::updateChannels( void )
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{
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}
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#endif
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#ifdef LMMS_HAVE_PORTAUDIO
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#include <QtGui/QLabel>
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#include <QtGui/QLineEdit>
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#include "engine.h"
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#include "debug.h"
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#include "config_mgr.h"
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#include "gui_templates.h"
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#include "templates.h"
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#include "combobox.h"
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#include "lcd_spinbox.h"
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audioPortAudio::audioPortAudio( bool & _success_ful, mixer * _mixer ) :
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audioDevice( tLimit<ch_cnt_t>(
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configManager::inst()->value( "audioportaudio", "channels" ).toInt(),
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DEFAULT_CHANNELS, SURROUND_CHANNELS ),
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_mixer ),
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m_outBuf( new surroundSampleFrame[getMixer()->framesPerPeriod()] ),
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m_outBuf_pos( 0 ),
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m_stop_semaphore( 1 ),
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m_wasPAInitError( FALSE )
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{
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_success_ful = FALSE;
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m_outBuf_size = getMixer()->framesPerPeriod();
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PaError err = Pa_Initialize();
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if( err != paNoError ) {
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printf( "Couldn't initialize PortAudio: %s\n", Pa_GetErrorText( err ) );
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m_wasPAInitError = TRUE;
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return;
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}
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if( Pa_GetDeviceCount() <= 0 )
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{
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return;
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}
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const QString& backend = configManager::inst()->value( "audioportaudio",
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"backend" );
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const QString& device = configManager::inst()->value( "audioportaudio",
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"device" );
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PaDeviceIndex inDevIdx = -1;
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PaDeviceIndex outDevIdx = -1;
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const PaDeviceInfo * di;
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for( int i = 0; i < Pa_GetDeviceCount(); ++i )
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{
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di = Pa_GetDeviceInfo( i );
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if( di->name == device &&
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Pa_GetHostApiInfo( di->hostApi )->name == backend )
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{
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inDevIdx = i;
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outDevIdx = i;
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}
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}
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if( inDevIdx < 0 )
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{
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inDevIdx = Pa_GetDefaultInputDevice();
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}
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if( outDevIdx < 0 )
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{
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outDevIdx = Pa_GetDefaultOutputDevice();
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}
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double inLatency = (double)getMixer()->framesPerPeriod() / (double)sampleRate();
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double outLatency = (double)getMixer()->framesPerPeriod() / (double)sampleRate();
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// FIXME: remove this
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inLatency = Pa_GetDeviceInfo( inDevIdx )->defaultLowInputLatency;
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outLatency = Pa_GetDeviceInfo( outDevIdx )->defaultLowOutputLatency;
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int samples = qMax( 1024, (int)getMixer()->framesPerPeriod() );
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// Configure output parameters.
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m_outputParameters.device = outDevIdx;
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m_outputParameters.channelCount = channels();
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m_outputParameters.sampleFormat = paFloat32; // 32 bit floating point output
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m_outputParameters.suggestedLatency = inLatency;
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m_outputParameters.hostApiSpecificStreamInfo = NULL;
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// Configure input parameters.
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m_inputParameters.device = inDevIdx;
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m_inputParameters.channelCount = DEFAULT_CHANNELS;
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m_inputParameters.sampleFormat = paFloat32; // 32 bit floating point input
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m_inputParameters.suggestedLatency = outLatency;
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m_inputParameters.hostApiSpecificStreamInfo = NULL;
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// Open an audio I/O stream.
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err = Pa_OpenStream(
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&m_paStream,
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&m_inputParameters, // The input parameter
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&m_outputParameters, // The outputparameter
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sampleRate(),
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samples,
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paNoFlag, // Don't use any flags
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_process_callback, // our callback function
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this );
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if( err != paNoError )
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{
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printf( "Couldn't open PortAudio: %s\n", Pa_GetErrorText( err ) );
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return;
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}
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printf( "Input device: '%s' backend: '%s'\n", Pa_GetDeviceInfo( inDevIdx )->name, Pa_GetHostApiInfo( Pa_GetDeviceInfo( inDevIdx )->hostApi )->name );
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printf( "Output device: '%s' backend: '%s'\n", Pa_GetDeviceInfo( outDevIdx )->name, Pa_GetHostApiInfo( Pa_GetDeviceInfo( outDevIdx )->hostApi )->name );
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m_stop_semaphore.acquire();
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m_supportsCapture = TRUE;
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_success_ful = TRUE;
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}
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audioPortAudio::~audioPortAudio()
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{
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stopProcessing();
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m_stop_semaphore.release();
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if( !m_wasPAInitError )
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{
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Pa_Terminate();
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}
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delete[] m_outBuf;
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}
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void audioPortAudio::startProcessing( void )
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{
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PaError err = Pa_StartStream( m_paStream );
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if( err != paNoError )
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{
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printf( "PortAudio error: %s\n", Pa_GetErrorText( err ) );
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return;
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}
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m_stopped = FALSE;
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}
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void audioPortAudio::stopProcessing( void )
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{
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if( Pa_IsStreamActive( m_paStream ) )
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{
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m_stop_semaphore.acquire();
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PaError err = Pa_CloseStream( m_paStream );
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if( err != paNoError )
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{
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printf( "PortAudio error: %s\n", Pa_GetErrorText( err ) );
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}
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}
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}
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void audioPortAudio::applyQualitySettings( void )
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{
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if( hqAudio() )
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{
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setSampleRate( engine::getMixer()->processingSampleRate() );
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int samples = qMax( 1024, (int)getMixer()->framesPerPeriod() );
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PaError err = Pa_OpenStream(
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&m_paStream,
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&m_inputParameters, // The input parameter
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&m_outputParameters, // The outputparameter
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sampleRate(),
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samples,
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paNoFlag, // Don't use any flags
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_process_callback, // our callback function
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this );
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if( err != paNoError )
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{
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printf( "Couldn't open PortAudio: %s\n", Pa_GetErrorText( err ) );
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return;
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}
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}
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audioDevice::applyQualitySettings();
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}
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int audioPortAudio::process_callback(
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const float *_inputBuffer,
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float * _outputBuffer,
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unsigned long _framesPerBuffer )
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{
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getMixer()->pushInputFrames( (sampleFrame*)_inputBuffer, _framesPerBuffer );
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if( m_stopped )
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{
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memset( _outputBuffer, 0, _framesPerBuffer *
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channels() * sizeof(float) );
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return 0;
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}
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while( _framesPerBuffer )
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{
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if( m_outBuf_pos == 0 )
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{
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// frames depend on the sample rate
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const fpp_t frames = getNextBuffer( m_outBuf );
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if( !frames )
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{
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m_stopped = TRUE;
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m_stop_semaphore.release();
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memset( _outputBuffer, 0, _framesPerBuffer *
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channels() * sizeof(float) );
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return 0;
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}
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m_outBuf_size = frames;
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}
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const int min_len = tMin( (int)_framesPerBuffer,
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m_outBuf_size - m_outBuf_pos );
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float master_gain = getMixer()->masterGain();
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for( fpp_t frame = 0; frame < min_len; ++frame )
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{
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for( ch_cnt_t chnl = 0; chnl < channels(); ++chnl )
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{
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( _outputBuffer + frame * channels() )[chnl] =
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mixer::clip( m_outBuf[frame][chnl] *
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master_gain );
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}
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}
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_outputBuffer += min_len * channels();
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_framesPerBuffer -= min_len;
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m_outBuf_pos += min_len;
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m_outBuf_pos %= m_outBuf_size;
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}
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}
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int audioPortAudio::_process_callback(
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const void *_inputBuffer,
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void * _outputBuffer,
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unsigned long _framesPerBuffer,
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const PaStreamCallbackTimeInfo * _timeInfo,
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PaStreamCallbackFlags _statusFlags,
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void * _arg )
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{
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Q_UNUSED(_timeInfo);
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Q_UNUSED(_statusFlags);
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audioPortAudio * _this = static_cast<audioPortAudio *> (_arg);
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_this->process_callback( (const float*)_inputBuffer,
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(float*)_outputBuffer, _framesPerBuffer );
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return 0;
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}
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void audioPortAudioSetupUtil::updateDevices( void )
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{
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PaError err = Pa_Initialize();
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if( err != paNoError ) {
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printf( "Couldn't initialize PortAudio: %s\n", Pa_GetErrorText( err ) );
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return;
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}
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// get active backend
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const QString& backend = m_backendModel.currentText();
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int hostApi = 0;
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const PaHostApiInfo * hi;
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for( int i = 0; i < Pa_GetHostApiCount(); ++i )
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{
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hi = Pa_GetHostApiInfo( i );
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if( backend == hi->name )
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{
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hostApi = i;
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break;
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}
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}
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// get devices for selected backend
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m_deviceModel.clear();
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const PaDeviceInfo * di;
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for( int i = 0; i < Pa_GetDeviceCount(); ++i )
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{
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di = Pa_GetDeviceInfo( i );
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if( di->hostApi == hostApi )
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{
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m_deviceModel.addItem( di->name );
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}
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}
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Pa_Terminate();
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}
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void audioPortAudioSetupUtil::updateChannels( void )
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{
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PaError err = Pa_Initialize();
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if( err != paNoError ) {
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printf( "Couldn't initialize PortAudio: %s\n", Pa_GetErrorText( err ) );
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return;
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}
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// get active backend
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Pa_Terminate();
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}
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audioPortAudio::setupWidget::setupWidget( QWidget * _parent ) :
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audioDevice::setupWidget( audioPortAudio::name(), _parent )
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{
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m_backend = new comboBox( this, "BACKEND" );
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m_backend->setGeometry( 52, 15, 120, 20 );
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QLabel * backend_lbl = new QLabel( tr( "BACKEND" ), this );
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backend_lbl->setFont( pointSize<6>( backend_lbl->font() ) );
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backend_lbl->move( 10, 17 );
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m_device = new comboBox( this, "DEVICE" );
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m_device->setGeometry( 52, 35, 250, 20 );
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QLabel * dev_lbl = new QLabel( tr( "DEVICE" ), this );
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dev_lbl->setFont( pointSize<6>( dev_lbl->font() ) );
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dev_lbl->move( 10, 37 );
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lcdSpinBoxModel * m = new lcdSpinBoxModel( );
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m->setRange( DEFAULT_CHANNELS, SURROUND_CHANNELS );
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m->setStep( 2 );
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m->setValue( configManager::inst()->value( "audioportaudio",
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"channels" ).toInt() );
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m_channels = new lcdSpinBox( 1, this );
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m_channels->setModel( m );
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m_channels->setLabel( tr( "CHANNELS" ) );
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m_channels->move( 308, 20 );
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// Setup models
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PaError err = Pa_Initialize();
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if( err != paNoError ) {
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printf( "Couldn't initialize PortAudio: %s\n", Pa_GetErrorText( err ) );
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return;
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}
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// todo: setup backend model
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const PaHostApiInfo * hi;
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for( int i = 0; i < Pa_GetHostApiCount(); ++i )
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{
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hi = Pa_GetHostApiInfo( i );
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m_setupUtil.m_backendModel.addItem( hi->name );
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}
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Pa_Terminate();
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const QString& backend = configManager::inst()->value( "audioportaudio",
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"backend" );
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const QString& device = configManager::inst()->value( "audioportaudio",
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"device" );
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int i = tMax( 0, m_setupUtil.m_backendModel.findText( backend ) );
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m_setupUtil.m_backendModel.setValue( i );
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m_setupUtil.updateDevices();
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i = tMax( 0, m_setupUtil.m_deviceModel.findText( device ) );
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m_setupUtil.m_deviceModel.setValue( i );
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connect( &m_setupUtil.m_backendModel, SIGNAL( dataChanged() ),
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&m_setupUtil, SLOT( updateDevices() ) );
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connect( &m_setupUtil.m_deviceModel, SIGNAL( dataChanged() ),
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&m_setupUtil, SLOT( updateChannels() ) );
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m_backend->setModel( &m_setupUtil.m_backendModel );
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m_device->setModel( &m_setupUtil.m_deviceModel );
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}
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audioPortAudio::setupWidget::~setupWidget()
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{
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disconnect( &m_setupUtil.m_backendModel, SIGNAL( dataChanged() ),
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&m_setupUtil, SLOT( updateDevices() ) );
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disconnect( &m_setupUtil.m_deviceModel, SIGNAL( dataChanged() ),
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&m_setupUtil, SLOT( updateChannels() ) );
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}
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void audioPortAudio::setupWidget::saveSettings( void )
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{
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configManager::inst()->setValue( "audioportaudio", "backend",
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m_setupUtil.m_backendModel.currentText() );
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configManager::inst()->setValue( "audioportaudio", "device",
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m_setupUtil.m_deviceModel.currentText() );
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configManager::inst()->setValue( "audioportaudio", "channels",
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QString::number( m_channels->value<int>() ) );
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}
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#endif
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#include "moc_audio_portaudio.cxx"
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#endif
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@@ -55,6 +55,7 @@
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#include "audio_alsa.h"
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#include "audio_jack.h"
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#include "audio_oss.h"
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#include "audio_portaudio.h"
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#include "audio_pulseaudio.h"
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#include "audio_sdl.h"
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#include "audio_dummy.h"
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@@ -455,6 +456,11 @@ setupDialog::setupDialog( ConfigTabs _tab_to_open ) :
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new audioPulseAudio::setupWidget( asw );
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#endif
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#ifdef LMMS_HAVE_PORTAUDIO
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m_audioIfaceSetupWidgets[audioPortAudio::name()] =
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new audioPortAudio::setupWidget( asw );
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#endif
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#ifdef LMMS_HAVE_SDL
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m_audioIfaceSetupWidgets[audioSDL::name()] =
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new audioSDL::setupWidget( asw );
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