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/*
* $Id$
*
* ***** BEGIN LGPL LICENSE BLOCK *****
*
* Copyright 2009 Jörg Hermann Müller
*
* This file is part of AudaSpace.
*
* AudaSpace is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* AudaSpace 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with AudaSpace. If not, see <http://www.gnu.org/licenses/>.
*
* ***** END LGPL LICENSE BLOCK *****
*/
#ifndef AUD_ENVELOPEREADER
#define AUD_ENVELOPEREADER
#include "AUD_EffectReader.h"
class AUD_Buffer;
/**
* This class represents an envelope follower.
*/
class AUD_EnvelopeReader : public AUD_EffectReader
{
private:
/**
* The playback buffer.
*/
AUD_Buffer *m_buffer;
/**
* The last envelopes buffer.
*/
AUD_Buffer *m_envelopes;
/**
* Attack b value.
*/
float m_bAttack;
/**
* Release b value.
*/
float m_bRelease;
/**
* Threshold value.
*/
float m_threshold;
public:
/**
* Creates a new envelope reader.
* \param reader The reader to read from.
* \param attack The attack value in seconds.
* \param release The release value in seconds.
* \param threshold The threshold value.
* \param arthreshold The attack/release threshold value.
* \exception AUD_Exception Thrown if the reader specified is NULL.
*/
AUD_EnvelopeReader(AUD_IReader* reader, float attack, float release,
float threshold, float arthreshold);
/**
* Destroys the reader.
*/
virtual ~AUD_EnvelopeReader();
virtual void read(int & length, sample_t* & buffer);
};
#endif //AUD_ENVELOPEREADER
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