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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.
119 lines
2.7 KiB
C++
119 lines
2.7 KiB
C++
/*
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* MixerWorkerThread.h - declaration of class MixerWorkerThread
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*
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* Copyright (c) 2009-2014 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 _MIXER_WORKER_THREAD_H
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#define _MIXER_WORKER_THREAD_H
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#include <QtCore/QAtomicPointer>
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#include <QtCore/QThread>
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#include "ThreadableJob.h"
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#include "Mixer.h"
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class MixerWorkerThread : public QThread
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{
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public:
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// internal representation of the job queue - all functions are thread-safe
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class JobQueue
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{
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public:
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enum OperationMode
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{
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Static, // no jobs added while processing queue
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Dynamic // jobs can be added while processing queue
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} ;
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JobQueue() :
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m_items(),
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m_queueSize( 0 ),
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m_itemsDone( 0 ),
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m_opMode( Static )
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{
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}
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void reset( OperationMode _opMode );
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void addJob( ThreadableJob * _job );
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void run( sampleFrame * _buffer );
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void wait();
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private:
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#define JOB_QUEUE_SIZE 1024
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QAtomicPointer<ThreadableJob> m_items[JOB_QUEUE_SIZE];
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QAtomicInt m_queueSize;
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QAtomicInt m_itemsDone;
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OperationMode m_opMode;
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} ;
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MixerWorkerThread( Mixer* mixer );
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virtual ~MixerWorkerThread();
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virtual void quit();
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static void resetJobQueue( JobQueue::OperationMode _opMode =
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JobQueue::Static )
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{
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globalJobQueue.reset( _opMode );
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}
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static void addJob( ThreadableJob * _job )
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{
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globalJobQueue.addJob( _job );
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}
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// a convenient helper function allowing to pass a container with pointers
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// to ThreadableJob objects
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template<typename T>
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static void fillJobQueue( const T & _vec,
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JobQueue::OperationMode _opMode = JobQueue::Static )
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{
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resetJobQueue( _opMode );
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for( typename T::ConstIterator it = _vec.begin(); it != _vec.end(); ++it )
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{
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addJob( *it );
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}
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}
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static void startAndWaitForJobs();
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private:
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virtual void run();
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static JobQueue globalJobQueue;
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static QWaitCondition * queueReadyWaitCond;
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static QList<MixerWorkerThread *> workerThreads;
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sampleFrame * m_workingBuf;
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volatile bool m_quit;
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} ;
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#endif
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