mirror of
https://github.com/LMMS/lmms.git
synced 2025-12-23 22:58:33 -05:00
125 lines
2.9 KiB
C++
125 lines
2.9 KiB
C++
/*
|
|
* AudioEngineWorkerThread.h - declaration of class AudioEngineWorkerThread
|
|
*
|
|
* Copyright (c) 2009-2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
|
|
*
|
|
* This file is part of LMMS - https://lmms.io
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public
|
|
* License along with this program (see COPYING); if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
* Boston, MA 02110-1301 USA.
|
|
*
|
|
*/
|
|
|
|
#ifndef LMMS_AUDIO_ENGINE_WORKER_THREAD_H
|
|
#define LMMS_AUDIO_ENGINE_WORKER_THREAD_H
|
|
|
|
#include <QThread>
|
|
|
|
#include <atomic>
|
|
|
|
class QWaitCondition;
|
|
|
|
namespace lmms
|
|
{
|
|
|
|
class AudioEngine;
|
|
class ThreadableJob;
|
|
|
|
class AudioEngineWorkerThread : public QThread
|
|
{
|
|
Q_OBJECT
|
|
public:
|
|
// internal representation of the job queue - all functions are thread-safe
|
|
class JobQueue
|
|
{
|
|
public:
|
|
enum class OperationMode
|
|
{
|
|
Static, // no jobs added while processing queue
|
|
Dynamic // jobs can be added while processing queue
|
|
} ;
|
|
|
|
static constexpr size_t JOB_QUEUE_SIZE = 8192;
|
|
|
|
JobQueue() :
|
|
m_items(),
|
|
m_writeIndex( 0 ),
|
|
m_itemsDone( 0 ),
|
|
m_opMode( OperationMode::Static )
|
|
{
|
|
std::fill(m_items, m_items + JOB_QUEUE_SIZE, nullptr);
|
|
}
|
|
|
|
void reset( OperationMode _opMode );
|
|
|
|
void addJob( ThreadableJob * _job );
|
|
|
|
void run();
|
|
void wait();
|
|
|
|
private:
|
|
std::atomic<ThreadableJob*> m_items[JOB_QUEUE_SIZE];
|
|
std::atomic_size_t m_writeIndex;
|
|
std::atomic_size_t m_itemsDone;
|
|
OperationMode m_opMode;
|
|
} ;
|
|
|
|
|
|
AudioEngineWorkerThread( AudioEngine* audioEngine );
|
|
~AudioEngineWorkerThread() override;
|
|
|
|
virtual void quit();
|
|
|
|
static void resetJobQueue( JobQueue::OperationMode _opMode =
|
|
JobQueue::OperationMode::Static )
|
|
{
|
|
globalJobQueue.reset( _opMode );
|
|
}
|
|
|
|
static void addJob( ThreadableJob * _job )
|
|
{
|
|
globalJobQueue.addJob( _job );
|
|
}
|
|
|
|
// a convenient helper function allowing to pass a container with pointers
|
|
// to ThreadableJob objects
|
|
template<typename T>
|
|
static void fillJobQueue( const T & _vec,
|
|
JobQueue::OperationMode _opMode = JobQueue::OperationMode::Static )
|
|
{
|
|
resetJobQueue( _opMode );
|
|
for (const auto& job : _vec)
|
|
{
|
|
addJob(job);
|
|
}
|
|
}
|
|
|
|
static void startAndWaitForJobs();
|
|
|
|
|
|
private:
|
|
void run() override;
|
|
|
|
static JobQueue globalJobQueue;
|
|
static QWaitCondition * queueReadyWaitCond;
|
|
static QList<AudioEngineWorkerThread *> workerThreads;
|
|
|
|
volatile bool m_quit;
|
|
} ;
|
|
|
|
} // namespace lmms
|
|
|
|
#endif // LMMS_AUDIO_ENGINE_WORKER_THREAD_H
|