OpenShot Audio Library | OpenShotAudio 0.3.2
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juce_MixerAudioSource.cpp
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
23namespace juce
24{
25
27 : currentSampleRate (0.0), bufferSizeExpected (0)
28{
29}
30
35
36//==============================================================================
38{
39 if (input != nullptr && ! inputs.contains (input))
40 {
41 double localRate;
43
44 {
45 const ScopedLock sl (lock);
46 localRate = currentSampleRate;
47 localBufferSize = bufferSizeExpected;
48 }
49
50 if (localRate > 0.0)
52
53 const ScopedLock sl (lock);
54
55 inputsToDelete.setBit (inputs.size(), deleteWhenRemoved);
56 inputs.add (input);
57 }
58}
59
61{
62 if (input != nullptr)
63 {
64 std::unique_ptr<AudioSource> toDelete;
65
66 {
67 const ScopedLock sl (lock);
68 const int index = inputs.indexOf (input);
69
70 if (index < 0)
71 return;
72
73 if (inputsToDelete [index])
74 toDelete.reset (input);
75
76 inputsToDelete.shiftBits (-1, index);
77 inputs.remove (index);
78 }
79
80 input->releaseResources();
81 }
82}
83
85{
87
88 {
89 const ScopedLock sl (lock);
90
91 for (int i = inputs.size(); --i >= 0;)
92 if (inputsToDelete[i])
93 toDelete.add (inputs.getUnchecked(i));
94
95 inputs.clear();
96 }
97
98 for (int i = toDelete.size(); --i >= 0;)
99 toDelete.getUnchecked(i)->releaseResources();
100}
101
103{
104 tempBuffer.setSize (2, samplesPerBlockExpected);
105
106 const ScopedLock sl (lock);
107
108 currentSampleRate = sampleRate;
109 bufferSizeExpected = samplesPerBlockExpected;
110
111 for (int i = inputs.size(); --i >= 0;)
112 inputs.getUnchecked(i)->prepareToPlay (samplesPerBlockExpected, sampleRate);
113}
114
116{
117 const ScopedLock sl (lock);
118
119 for (int i = inputs.size(); --i >= 0;)
120 inputs.getUnchecked(i)->releaseResources();
121
122 tempBuffer.setSize (2, 0);
123
124 currentSampleRate = 0;
125 bufferSizeExpected = 0;
126}
127
129{
130 const ScopedLock sl (lock);
131
132 if (inputs.size() > 0)
133 {
134 inputs.getUnchecked(0)->getNextAudioBlock (info);
135
136 if (inputs.size() > 1)
137 {
138 tempBuffer.setSize (jmax (1, info.buffer->getNumChannels()),
139 info.buffer->getNumSamples());
140
141 AudioSourceChannelInfo info2 (&tempBuffer, 0, info.numSamples);
142
143 for (int i = 1; i < inputs.size(); ++i)
144 {
145 inputs.getUnchecked(i)->getNextAudioBlock (info2);
146
147 for (int chan = 0; chan < info.buffer->getNumChannels(); ++chan)
148 info.buffer->addFrom (chan, info.startSample, tempBuffer, chan, 0, info.numSamples);
149 }
150 }
151 }
152 else
153 {
154 info.clearActiveBufferRegion();
155 }
156}
157
158} // namespace juce
ElementType getUnchecked(int index) const
Definition juce_Array.h:252
int size() const noexcept
Definition juce_Array.h:215
void remove(int indexToRemove)
Definition juce_Array.h:767
int indexOf(ParameterType elementToLookFor) const
Definition juce_Array.h:382
void add(const ElementType &newElement)
Definition juce_Array.h:418
bool contains(ParameterType elementToLookFor) const
Definition juce_Array.h:400
void clear()
Definition juce_Array.h:188
void setSize(int newNumChannels, int newNumSamples, bool keepExistingContent=false, bool clearExtraSpace=false, bool avoidReallocating=false)
virtual void releaseResources()=0
virtual void prepareToPlay(int samplesPerBlockExpected, double sampleRate)=0
void shiftBits(int howManyBitsLeft, int startBit)
void setBit(int bitNumber)
void removeInputSource(AudioSource *input)
void getNextAudioBlock(const AudioSourceChannelInfo &) override
void addInputSource(AudioSource *newInput, bool deleteWhenRemoved)
void prepareToPlay(int samplesPerBlockExpected, double sampleRate) override