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git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@81 0778d3d1-df1d-0410-868b-ea421aaaa00d
115 lines
2.2 KiB
C++
115 lines
2.2 KiB
C++
/*
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* audio_dummy.h - dummy-audio-device
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*
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* Copyright (c) 2004-2006 Tobias Doerffel <tobydox/at/users.sourceforge.net>
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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*/
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#ifndef _AUDIO_DUMMY_H
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#define _AUDIO_DUMMY_H
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#include "audio_device.h"
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#include "micro_timer.h"
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class audioDummy : public audioDevice, public QThread
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{
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public:
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audioDummy( const sample_rate_t _sample_rate, bool & _success_ful,
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mixer * _mixer ) :
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audioDevice( _sample_rate, DEFAULT_CHANNELS, _mixer ),
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m_quit( FALSE )
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{
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_success_ful = TRUE;
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}
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virtual ~audioDummy()
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{
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stopProcessing();
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}
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inline static QString name( void )
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{
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return( setupWidget::tr( "Dummy (no sound output)" ) );
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}
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class setupWidget : public audioDevice::setupWidget
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{
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public:
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setupWidget( QWidget * _parent ) :
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audioDevice::setupWidget( audioDummy::name(), _parent )
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{
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}
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virtual ~setupWidget()
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{
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}
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virtual void saveSettings( void )
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{
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}
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} ;
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private:
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virtual void startProcessing( void )
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{
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start();
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}
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virtual void stopProcessing( void )
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{
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if( isRunning() )
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{
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m_quit = TRUE;
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wait( 1000 );
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terminate();
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}
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}
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virtual void run( void )
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{
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microTimer timer;
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while( m_quit == FALSE )
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{
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timer.reset();
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processNextBuffer();
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const Sint32 microseconds = static_cast<Sint32>(
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getMixer()->framesPerAudioBuffer() *
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1000000.0f / getMixer()->sampleRate() -
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timer.elapsed() );
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if( microseconds > 0 )
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{
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usleep( microseconds );
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}
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}
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}
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volatile bool m_quit;
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} ;
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#endif
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