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/***************************************************************************
enginesidechain.h
-------------------
copyright : (C) 2008 Albert Santoni
email : gamegod \a\t users.sf.net
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#ifndef ENGINESIDECHAIN_H
#define ENGINESIDECHAIN_H
#include <QThread>
#include <QMutex>
#include <QWaitCondition>
#include <QList>
#include "configobject.h"
#include "engine/sidechain/sidechainworker.h"
#include "util/fifo.h"
#include "util/types.h"
class EngineSideChain : public QThread {
Q_OBJECT
public:
EngineSideChain(ConfigObject<ConfigValue>* pConfig);
virtual ~EngineSideChain();
// Not thread-safe, wait-free. Submit buffer of samples to the sidechain for
// processing. Should only be called from a single writer thread (typically
// the engine callback).
void writeSamples(const CSAMPLE* buffer, int buffer_size);
// Thread-safe, blocking.
void addSideChainWorker(SideChainWorker* pWorker);
private:
void run();
ConfigObject<ConfigValue>* m_pConfig;
// Indicates that the thread should exit.
volatile bool m_bStopThread;
FIFO<CSAMPLE> m_sampleFifo;
CSAMPLE* m_pWorkBuffer;
// Provides thread safety around the wait condition below.
QMutex m_waitLock;
// Allows sleeping until we have samples to process.
QWaitCondition m_waitForSamples;
// Sidechain workers registered with EngineSideChain.
QMutex m_workerLock;
QList<SideChainWorker*> m_workers;
};
#endif
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