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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 LinearResampleReader.h
* @ingroup respec
* The LinearResampleReader class.
*/
#include "respec/ResampleReader.h"
#include "util/Buffer.h"
AUD_NAMESPACE_BEGIN
/**
* This resampling reader does simple first-order hold resampling.
*/
class AUD_API LinearResampleReader : public ResampleReader
{
private:
/**
* The reader channels.
*/
Channels m_channels;
/**
* The position in the cache.
*/
float m_cache_pos;
/**
* The sound output buffer.
*/
Buffer m_buffer;
/**
* The input caching buffer.
*/
Buffer m_cache;
/**
* Whether the cache contains valid data.
*/
bool m_cache_ok;
// delete copy constructor and operator=
LinearResampleReader(const LinearResampleReader&) = delete;
LinearResampleReader& operator=(const LinearResampleReader&) = delete;
public:
/**
* Creates a resampling reader.
* \param reader The reader to mix.
* \param rate The target sampling rate.
*/
LinearResampleReader(std::shared_ptr<IReader> reader, SampleRate rate);
virtual void seek(int position);
virtual int getLength() const;
virtual int getPosition() const;
virtual Specs getSpecs() const;
virtual void read(int& length, bool& eos, sample_t* buffer);
};
AUD_NAMESPACE_END
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