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/*******************************************************************************
* Copyright 2009-2016 Jörg Müller
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
#pragma once
/**
* @file ReverseReader.h
* @ingroup fx
* The ReverseReader class.
*/
#include "fx/EffectReader.h"
AUD_NAMESPACE_BEGIN
/**
* This class reads another reader from back to front.
* \note The underlying reader must be seekable.
*/
class AUD_API ReverseReader : public EffectReader
{
private:
/**
* The sample count.
*/
const int m_length;
/**
* The current position.
*/
int m_position;
// delete copy constructor and operator=
ReverseReader(const ReverseReader&) = delete;
ReverseReader& operator=(const ReverseReader&) = delete;
public:
/**
* Creates a new reverse reader.
* \param reader The reader to read from.
* \exception Exception Thrown if the reader specified has an
* undeterminable/infinite length or is not seekable.
*/
ReverseReader(std::shared_ptr<IReader> reader);
virtual void seek(int position);
virtual int getLength() const;
virtual int getPosition() const;
virtual void read(int& length, bool& eos, sample_t* buffer);
};
AUD_NAMESPACE_END
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