/******************************************************************************* * 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 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