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  • Committer: Bazaar Package Importer
  • Author(s): Alessio Treglia
  • Date: 2010-11-12 13:32:32 UTC
  • mfrom: (1.1.9 upstream) (3.1.8 sid)
  • Revision ID: james.westby@ubuntu.com-20101112133232-vdld83iyji8srqti
Tags: 0.4.7-2ubuntu1
https://launchpad.net/bugs/606533
* Re-sync with Debian (LP: #606533):
  - Replace build-dep on libwine-dev with libwine-dev-unstable to build
    against the newer Wine.

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include/AudioDummy.h
 
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/*
 
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 * AudioDummy.h - dummy audio-device
 
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 *
 
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 * Copyright (c) 2004-2009 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., 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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#ifndef _AUDIO_DUMMY_H
 
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#define _AUDIO_DUMMY_H
 
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#include "AudioDevice.h"
 
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#include "MicroTimer.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( bool & _success_ful, mixer * _mixer ) :
 
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                AudioDevice( DEFAULT_CHANNELS, _mixer )
 
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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()
 
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        {
 
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                return QT_TRANSLATE_NOOP( "setupWidget", "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()
 
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                {
 
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                }
 
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                virtual void show()
 
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                {
 
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                        parentWidget()->hide();
 
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                        QWidget::show();
 
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                }
 
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        } ;
 
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private:
 
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        virtual void startProcessing()
 
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        {
 
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                start();
 
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        }
 
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        virtual void stopProcessing()
 
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        {
 
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                if( isRunning() )
 
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                {
 
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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()
 
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        {
 
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                MicroTimer timer;
 
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                while( true )
 
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                {
 
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                        timer.reset();
 
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                        const surroundSampleFrame * b =
 
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                                                getMixer()->nextBuffer();
 
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                        if( !b )
 
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                        {
 
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                                break;
 
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                        }
 
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                        delete[] b;
 
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                        const Sint32 microseconds = static_cast<Sint32>(
 
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                                        getMixer()->framesPerPeriod() *
 
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                                        1000000.0f /
 
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                                getMixer()->processingSampleRate() -
 
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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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} ;
 
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#endif