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Diffstat (limited to 'extern/audaspace/include/respec/LinearResampleReader.h')
-rw-r--r-- | extern/audaspace/include/respec/LinearResampleReader.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/extern/audaspace/include/respec/LinearResampleReader.h b/extern/audaspace/include/respec/LinearResampleReader.h new file mode 100644 index 00000000000..aaf95672e55 --- /dev/null +++ b/extern/audaspace/include/respec/LinearResampleReader.h @@ -0,0 +1,80 @@ +/******************************************************************************* + * 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 |