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extern/audaspace/include/respec/LinearResampleReader.h
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| /******************************************************************************* | |||||
| * Copyright 2009-2015 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 specs The target specification. | |||||
| */ | |||||
| LinearResampleReader(std::shared_ptr<IReader> reader, Specs specs); | |||||
| 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 | |||||