blender/intern/audaspace/FX/AUD_ReverseReader.h

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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* Copyright 2009-2011 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 General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Audaspace; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ***** END GPL LICENSE BLOCK *****
*/
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/** \file audaspace/FX/AUD_ReverseReader.h
* \ingroup audfx
*/
#ifndef __AUD_REVERSEREADER_H__
#define __AUD_REVERSEREADER_H__
#include "AUD_EffectReader.h"
#include "AUD_Buffer.h"
/**
* This class reads another reader from back to front.
* \note The underlying reader must be seekable.
*/
class AUD_ReverseReader : public AUD_EffectReader
{
private:
/**
* The sample count.
*/
const int m_length;
/**
* The current position.
*/
int m_position;
// hide copy constructor and operator=
AUD_ReverseReader(const AUD_ReverseReader&);
AUD_ReverseReader& operator=(const AUD_ReverseReader&);
public:
/**
* Creates a new reverse reader.
* \param reader The reader to read from.
* \exception AUD_Exception Thrown if the reader specified has an
* undeterminable/infinite length or is not seekable.
*/
AUD_ReverseReader(boost::shared_ptr<AUD_IReader> reader);
virtual void seek(int position);
virtual int getLength() const;
virtual int getPosition() const;
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virtual void read(int& length, bool& eos, sample_t* buffer);
};
#endif //__AUD_REVERSEREADER_H__