diff options
author | Dalai Felinto <dfelinto@gmail.com> | 2018-02-01 14:11:04 +0300 |
---|---|---|
committer | Dalai Felinto <dfelinto@gmail.com> | 2018-02-01 14:22:57 +0300 |
commit | 781dd5edb5b74ecb417a16c28eab31483fc3d11a (patch) | |
tree | e5c142f2eef1cbcb1ed6dc243ec9707fe64f8d5f /extern/audaspace/include/fx/ConvolverReader.h | |
parent | cd317fab65e1b6c1652ba7a58786a8cc5bd11843 (diff) |
Fix audaspace mess in 2.8
All these files were removed since accidental commit, revert and merge in 2.8.
ea31f0ac3b877e + 0a4e170c28cec + 11f9a23a286c17f + 7b27b10fa6a6
Diffstat (limited to 'extern/audaspace/include/fx/ConvolverReader.h')
-rw-r--r-- | extern/audaspace/include/fx/ConvolverReader.h | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/extern/audaspace/include/fx/ConvolverReader.h b/extern/audaspace/include/fx/ConvolverReader.h new file mode 100644 index 00000000000..2ce917daec5 --- /dev/null +++ b/extern/audaspace/include/fx/ConvolverReader.h @@ -0,0 +1,198 @@ +/******************************************************************************* +* Copyright 2015-2016 Juan Francisco Crespo Galán +* +* 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 ConvolverReader.h +* @ingroup fx +* The ConvolverReader class. +*/ + +#include "IReader.h" +#include "ISound.h" +#include "Convolver.h" +#include "ImpulseResponse.h" +#include "util/FFTPlan.h" +#include "util/ThreadPool.h" + +#include <memory> +#include <vector> +#include <future> + +AUD_NAMESPACE_BEGIN + +/** +* This class represents a reader for a sound that can be modified depending on a given impulse response. +*/ +class AUD_API ConvolverReader : public IReader +{ +private: + /** + * The current position. + */ + int m_position; + + /** + * The reader of the input sound. + */ + std::shared_ptr<IReader> m_reader; + + /** + * The impulse response in the frequency domain. + */ + std::shared_ptr<ImpulseResponse> m_ir; + + /** + * The FFT size, given by the FFTPlan. + */ + int m_N; + + /** + * The length of the impulse response fragments, m_N/2 will be used. + */ + int m_M; + + /** + * The max length of the input slices, m_N/2 will be used. + */ + int m_L; + + /** + * The array of convolvers that will be used, one per channel. + */ + std::vector<std::unique_ptr<Convolver>> m_convolvers; + + /** + * The output buffer in which the convolved data will be written and from which the reader will read. + */ + sample_t* m_outBuffer; + + /** + * A vector of buffers (one per channel) on which the audio signal will be separated per channel so it can be convolved. + */ + std::vector<sample_t*> m_vecInOut; + + /** + * Current position in which the m_outBuffer is being read. + */ + int m_outBufferPos; + + /** + * Effective length of the m_outBuffer. + */ + int m_eOutBufLen; + + /** + * Real length of the m_outBuffer. + */ + int m_outBufLen; + + /** + * Flag indicating whether the end of the sound has been reached or not. + */ + bool m_eosReader; + + /** + * Flag indicating whether the end of the extra data generated in the convolution has been reached or not. + */ + bool m_eosTail; + + /** + * The number of channels of the sound to be convolved. + */ + int m_inChannels; + + /** + * The number of channels of the impulse response. + */ + int m_irChannels; + + /** + * The number of threads used for channels. + */ + int m_nChannelThreads; + + /** + * Length of the input data to be used by the channel threads. + */ + int m_lastLengthIn; + + /** + * A shared ptr to a thread pool. + */ + std::shared_ptr<ThreadPool> m_threadPool; + + /** + * A vector of futures to sync tasks. + */ + std::vector<std::future<int>> m_futures; + + // delete copy constructor and operator= + ConvolverReader(const ConvolverReader&) = delete; + ConvolverReader& operator=(const ConvolverReader&) = delete; + +public: + /** + * Creates a new convolver reader. + * \param reader A reader of the input sound to be assigned to this reader. + * \param ir A shared pointer to an impulseResponse object that will be used to convolve the sound. + * \param threadPool A shared pointer to a ThreadPool object with 1 or more threads. + * \param plan A shared pointer to and FFT plan that will be used for convolution. + * \exception Exception thrown if impulse response doesn't match the specs (number fo channels and rate) of the input reader. + */ + ConvolverReader(std::shared_ptr<IReader> reader, std::shared_ptr<ImpulseResponse> ir, std::shared_ptr<ThreadPool> threadPool, std::shared_ptr<FFTPlan> plan); + virtual ~ConvolverReader(); + + virtual bool isSeekable() const; + 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); + +private: + /** + * Divides a sound buffer in several buffers, one per channel. + * \param buffer The buffer that will be divided. + * \param len The length of the buffer. + */ + void divideByChannel(const sample_t* buffer, int len); + + /** + * Joins several buffers (one per channel) into the m_outBuffer. + * \param start The starting position from which the m_outBuffer will be written. + * \param len The amout of samples that will be joined. + */ + void joinByChannel(int start, int len); + + /** + * Loads the m_outBuffer with data. + */ + void loadBuffer(); + + /** + * The function that the threads will run. It will process a subset of channels. + * \param id An id number that will determine which subset of channels will be processed. + * \param input A flag that will indicate if thare is input data. + * -If true there is new input data. + * -If false there isn't new input data. + * \return The number of samples obtained. + */ + int threadFunction(int id, bool input); +}; + +AUD_NAMESPACE_END
\ No newline at end of file |