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a955fb755a
There once have been huge efforts to implement FX send support in the master branch. In order to make it available on a stable base here's a backport which is non-trivial as there have been major rewrites of the mixer's worker thread architecture. There still seem to be bugs which we have to fix before merging into stable branch. Thanks to Andrew Kelley for the original work.
151 lines
2.8 KiB
C++
151 lines
2.8 KiB
C++
/*
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* AudioPort.h - base-class for objects providing sound at a port
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*
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* Copyright (c) 2005-2014 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_PORT_H
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#define _AUDIO_PORT_H
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#include <QtCore/QString>
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#include <QtCore/QMutex>
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#include <QtCore/QMutexLocker>
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#include "Mixer.h"
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class EffectChain;
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class AudioPort : public ThreadableJob
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{
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public:
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AudioPort( const QString & _name, bool _has_effect_chain = true );
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virtual ~AudioPort();
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inline sampleFrame * firstBuffer()
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{
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return m_firstBuffer;
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}
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inline sampleFrame * secondBuffer()
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{
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return m_secondBuffer;
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}
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inline void lockFirstBuffer()
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{
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m_firstBufferLock.lock();
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}
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inline void lockSecondBuffer()
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{
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m_secondBufferLock.lock();
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}
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inline void unlockFirstBuffer()
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{
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m_firstBufferLock.unlock();
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}
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inline void unlockSecondBuffer()
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{
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m_secondBufferLock.unlock();
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}
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void nextPeriod();
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// indicate whether JACK & Co should provide output-buffer at ext. port
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inline bool extOutputEnabled() const
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{
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return m_extOutputEnabled;
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}
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void setExtOutputEnabled( bool _enabled );
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// next effect-channel after this audio-port
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// (-1 = none 0 = master)
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inline fx_ch_t nextFxChannel() const
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{
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return m_nextFxChannel;
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}
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inline EffectChain * effects()
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{
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return m_effects;
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}
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void setNextFxChannel( const fx_ch_t _chnl )
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{
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m_nextFxChannel = _chnl;
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}
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const QString & name() const
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{
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return m_name;
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}
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void setName( const QString & _new_name );
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bool processEffects();
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// ThreadableJob stuff
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virtual void doProcessing( sampleFrame * );
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virtual bool requiresProcessing() const
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{
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return true;
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}
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enum bufferUsages
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{
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NoUsage,
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FirstBuffer,
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BothBuffers
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} ;
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private:
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volatile bufferUsages m_bufferUsage;
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sampleFrame * m_firstBuffer;
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sampleFrame * m_secondBuffer;
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QMutex m_firstBufferLock;
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QMutex m_secondBufferLock;
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bool m_extOutputEnabled;
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fx_ch_t m_nextFxChannel;
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QString m_name;
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EffectChain * m_effects;
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friend class Mixer;
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friend class MixerWorkerThread;
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} ;
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#endif
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