Audaspace  1.4.0
A high level audio library.
ConvolverReader.h
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2 * Copyright 2015-2016 Juan Francisco Crespo Galán
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
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13 * See the License for the specific language governing permissions and
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16 
17 #pragma once
18 
25 #include "IReader.h"
26 #include "ISound.h"
27 #include "Convolver.h"
28 #include "ImpulseResponse.h"
29 #include "util/FFTPlan.h"
30 #include "util/ThreadPool.h"
31 
32 #include <memory>
33 #include <vector>
34 #include <future>
35 
37 
42 {
43 private:
47  int m_position;
48 
52  std::shared_ptr<IReader> m_reader;
53 
57  std::shared_ptr<ImpulseResponse> m_ir;
58 
62  int m_N;
63 
67  int m_M;
68 
72  int m_L;
73 
77  std::vector<std::unique_ptr<Convolver>> m_convolvers;
78 
82  sample_t* m_outBuffer;
83 
87  std::vector<sample_t*> m_vecInOut;
88 
92  int m_outBufferPos;
93 
97  int m_eOutBufLen;
98 
102  int m_outBufLen;
103 
107  bool m_eosReader;
108 
112  bool m_eosTail;
113 
117  int m_inChannels;
118 
122  int m_irChannels;
123 
127  int m_nChannelThreads;
128 
132  int m_lastLengthIn;
133 
137  std::shared_ptr<ThreadPool> m_threadPool;
138 
142  std::vector<std::future<int>> m_futures;
143 
144  // delete copy constructor and operator=
145  ConvolverReader(const ConvolverReader&) = delete;
146  ConvolverReader& operator=(const ConvolverReader&) = delete;
147 
148 public:
157  ConvolverReader(std::shared_ptr<IReader> reader, std::shared_ptr<ImpulseResponse> ir, std::shared_ptr<ThreadPool> threadPool, std::shared_ptr<FFTPlan> plan);
158  virtual ~ConvolverReader();
159 
160  virtual bool isSeekable() const;
161  virtual void seek(int position);
162  virtual int getLength() const;
163  virtual int getPosition() const;
164  virtual Specs getSpecs() const;
165  virtual void read(int& length, bool& eos, sample_t* buffer);
166 
167 private:
173  void divideByChannel(const sample_t* buffer, int len);
174 
180  void joinByChannel(int start, int len);
181 
185  void loadBuffer();
186 
195  int threadFunction(int id, bool input);
196 };
197 
virtual int getLength() const =0
Returns an approximated length of the source in samples.
#define AUD_NAMESPACE_BEGIN
Opens the audaspace namespace aud.
Definition: Audaspace.h:116
This class represents a sound source as stream or as buffer which can be read for example by another ...
Definition: IReader.h:34
The ThreadPool class.
virtual void seek(int position)=0
Seeks to a specific position in the source.
This class represents a reader for a sound that can be modified depending on a given impulse response...
Definition: ConvolverReader.h:41
The ISound interface.
#define AUD_API
Used for exporting symbols in the shared library.
Definition: Audaspace.h:93
virtual void read(int &length, bool &eos, sample_t *buffer)=0
Request to read the next length samples out of the source.
Specification of a sound source.
Definition: Specification.h:109
virtual Specs getSpecs() const =0
Returns the specification of the reader.
The ImpulseResponse class.
The IReader interface.
float sample_t
Sample type.(float samples)
Definition: Audaspace.h:126
#define AUD_NAMESPACE_END
Closes the audaspace namespace aud.
Definition: Audaspace.h:119
virtual int getPosition() const =0
Returns the position of the source as a sample count value.
virtual bool isSeekable() const =0
Tells whether the source provides seeking functionality or not.
The FFTPlan class.
The Convolver class.