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Effect.h
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Effect.h
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/*
* Effect.h - base class for effects
*
* Copyright (c) 2006-2007 Danny McRae <khjklujn/at/users.sourceforge.net>
* Copyright (c) 2006-2014 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 EFFECT_H
#define EFFECT_H
#include "Plugin.h"
#include "Engine.h"
#include "Mixer.h"
#include "AutomatableModel.h"
#include "TempoSyncKnobModel.h"
#include "MemoryManager.h"
class EffectChain;
class EffectControls;
class EXPORT Effect : public Plugin
{
MM_OPERATORS
Q_OBJECT
public:
Effect( const Plugin::Descriptor * _desc,
Model * _parent,
const Descriptor::SubPluginFeatures::Key * _key );
virtual ~Effect();
virtual void saveSettings( QDomDocument & _doc, QDomElement & _parent );
virtual void loadSettings( const QDomElement & _this );
inline virtual QString nodeName() const
{
return "effect";
}
virtual bool processAudioBuffer( sampleFrame * _buf,
const fpp_t _frames ) = 0;
inline ch_cnt_t processorCount() const
{
return m_processors;
}
inline void setProcessorCount( ch_cnt_t _processors )
{
m_processors = _processors;
}
inline bool isOkay() const
{
return m_okay;
}
inline void setOkay( bool _state )
{
m_okay = _state;
}
inline bool isRunning() const
{
return m_running;
}
inline void startRunning()
{
m_bufferCount = 0;
m_running = true;
}
inline void stopRunning()
{
m_running = false;
}
inline bool isEnabled() const
{
return m_enabledModel.value();
}
inline f_cnt_t timeout() const
{
const float samples = Engine::mixer()->processingSampleRate() * m_autoQuitModel.value() / 1000.0f;
return 1 + ( static_cast<int>( samples ) / Engine::mixer()->framesPerPeriod() );
}
inline float wetLevel() const
{
return m_wetDryModel.value();
}
inline float dryLevel() const
{
return 1.0f - m_wetDryModel.value();
}
inline float gate() const
{
const float level = m_gateModel.value();
return level*level * m_processors;
}
inline f_cnt_t bufferCount() const
{
return m_bufferCount;
}
inline void resetBufferCount()
{
m_bufferCount = 0;
}
inline void incrementBufferCount()
{
++m_bufferCount;
}
inline bool dontRun() const
{
return m_noRun;
}
inline void setDontRun( bool _state )
{
m_noRun = _state;
}
inline const Descriptor::SubPluginFeatures::Key & key() const
{
return m_key;
}
EffectChain * effectChain() const
{
return m_parent;
}
virtual EffectControls * controls() = 0;
static Effect * instantiate( const QString & _plugin_name,
Model * _parent,
Descriptor::SubPluginFeatures::Key * _key );
protected:
void checkGate( double _out_sum );
virtual PluginView * instantiateView( QWidget * );
// some effects might not be capable of higher sample-rates so they can
// sample it down before processing and back after processing
inline void sampleDown( const sampleFrame * _src_buf,
sampleFrame * _dst_buf,
sample_rate_t _dst_sr )
{
resample( 0, _src_buf,
Engine::mixer()->processingSampleRate(),
_dst_buf, _dst_sr,
Engine::mixer()->framesPerPeriod() );
}
inline void sampleBack( const sampleFrame * _src_buf,
sampleFrame * _dst_buf,
sample_rate_t _src_sr )
{
resample( 1, _src_buf, _src_sr, _dst_buf,
Engine::mixer()->processingSampleRate(),
Engine::mixer()->framesPerPeriod() * _src_sr /
Engine::mixer()->processingSampleRate() );
}
void reinitSRC();
private:
EffectChain * m_parent;
void resample( int _i, const sampleFrame * _src_buf,
sample_rate_t _src_sr,
sampleFrame * _dst_buf, sample_rate_t _dst_sr,
const f_cnt_t _frames );
Descriptor::SubPluginFeatures::Key m_key;
ch_cnt_t m_processors;
bool m_okay;
bool m_noRun;
bool m_running;
f_cnt_t m_bufferCount;
BoolModel m_enabledModel;
FloatModel m_wetDryModel;
FloatModel m_gateModel;
TempoSyncKnobModel m_autoQuitModel;
bool m_autoQuitDisabled;
SRC_DATA m_srcData[2];
SRC_STATE * m_srcState[2];
friend class EffectView;
friend class EffectChain;
} ;
typedef Effect::Descriptor::SubPluginFeatures::Key EffectKey;
typedef Effect::Descriptor::SubPluginFeatures::KeyList EffectKeyList;
#endif