OpenShot Audio Library | OpenShotAudio  0.3.2
juce_AudioSource.h
1 /*
2  ==============================================================================
3 
4  This file is part of the JUCE library.
5  Copyright (c) 2017 - ROLI Ltd.
6 
7  JUCE is an open source library subject to commercial or open-source
8  licensing.
9 
10  The code included in this file is provided under the terms of the ISC license
11  http://www.isc.org/downloads/software-support-policy/isc-license. Permission
12  To use, copy, modify, and/or distribute this software for any purpose with or
13  without fee is hereby granted provided that the above copyright notice and
14  this permission notice appear in all copies.
15 
16  JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
17  EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
18  DISCLAIMED.
19 
20  ==============================================================================
21 */
22 
23 namespace juce
24 {
25 
26 //==============================================================================
32 struct JUCE_API AudioSourceChannelInfo
33 {
36 
39  int startSampleOffset, int numSamplesToUse) noexcept
40  : buffer (bufferToUse),
41  startSample (startSampleOffset),
42  numSamples (numSamplesToUse)
43  {
44  }
45 
50  explicit AudioSourceChannelInfo (AudioBuffer<float>& bufferToUse) noexcept
51  : buffer (&bufferToUse),
52  startSample (0),
53  numSamples (bufferToUse.getNumSamples())
54  {
55  }
56 
74 
78 
82 
85  {
86  if (buffer != nullptr)
87  buffer->clear (startSample, numSamples);
88  }
89 };
90 
91 
92 //==============================================================================
109 class JUCE_API AudioSource
110 {
111 protected:
112  //==============================================================================
114  AudioSource() = default;
115 
116 public:
118  virtual ~AudioSource() = default;
119 
120  //==============================================================================
147  virtual void prepareToPlay (int samplesPerBlockExpected,
148  double sampleRate) = 0;
149 
162  virtual void releaseResources() = 0;
163 
176  virtual void getNextAudioBlock (const AudioSourceChannelInfo& bufferToFill) = 0;
177 };
178 
179 } // namespace juce
virtual void releaseResources()=0
AudioSource()=default
virtual void prepareToPlay(int samplesPerBlockExpected, double sampleRate)=0
virtual ~AudioSource()=default
virtual void getNextAudioBlock(const AudioSourceChannelInfo &bufferToFill)=0
AudioSourceChannelInfo(AudioBuffer< float > *bufferToUse, int startSampleOffset, int numSamplesToUse) noexcept
AudioBuffer< float > * buffer
AudioSourceChannelInfo(AudioBuffer< float > &bufferToUse) noexcept