OpenShot Audio Library | OpenShotAudio
0.3.2
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juce_ToneGeneratorAudioSource.cpp
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2017 - ROLI Ltd.
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JUCE is an open source library subject to commercial or open-source
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licensing.
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The code included in this file is provided under the terms of the ISC license
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http://www.isc.org/downloads/software-support-policy/isc-license. Permission
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To use, copy, modify, and/or distribute this software for any purpose with or
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without fee is hereby granted provided that the above copyright notice and
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this permission notice appear in all copies.
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace
juce
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{
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ToneGeneratorAudioSource::ToneGeneratorAudioSource
()
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: frequency (1000.0),
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sampleRate (44100.0),
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currentPhase (0.0),
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phasePerSample (0.0),
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amplitude (0.5f)
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{
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}
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ToneGeneratorAudioSource::~ToneGeneratorAudioSource
()
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{
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}
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//==============================================================================
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void
ToneGeneratorAudioSource::setAmplitude
(
const
float
newAmplitude
)
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{
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amplitude =
newAmplitude
;
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}
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void
ToneGeneratorAudioSource::setFrequency
(
const
double
newFrequencyHz
)
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{
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frequency =
newFrequencyHz
;
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phasePerSample = 0.0;
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}
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//==============================================================================
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void
ToneGeneratorAudioSource::prepareToPlay
(
int
/*samplesPerBlockExpected*/
,
double
rate
)
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{
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currentPhase = 0.0;
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phasePerSample = 0.0;
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sampleRate =
rate
;
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}
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void
ToneGeneratorAudioSource::releaseResources
()
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{
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}
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void
ToneGeneratorAudioSource::getNextAudioBlock
(
const
AudioSourceChannelInfo
&
info
)
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{
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if
(phasePerSample == 0.0)
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phasePerSample =
MathConstants<double>::twoPi
/ (sampleRate / frequency);
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for
(
int
i = 0; i <
info
.numSamples; ++i)
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{
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const
float
sample
= amplitude * (
float
) std::sin (currentPhase);
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currentPhase += phasePerSample;
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for
(
int
j
=
info
.buffer->getNumChannels(); --
j
>= 0;)
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info
.buffer->setSample (
j
,
info
.startSample + i,
sample
);
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}
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}
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}
// namespace juce
juce::Array
Definition
juce_Array.h:56
juce::ToneGeneratorAudioSource::prepareToPlay
void prepareToPlay(int samplesPerBlockExpected, double sampleRate) override
Definition
juce_ToneGeneratorAudioSource.cpp:52
juce::ToneGeneratorAudioSource::releaseResources
void releaseResources() override
Definition
juce_ToneGeneratorAudioSource.cpp:59
juce::ToneGeneratorAudioSource::setFrequency
void setFrequency(double newFrequencyHz)
Definition
juce_ToneGeneratorAudioSource.cpp:45
juce::ToneGeneratorAudioSource::ToneGeneratorAudioSource
ToneGeneratorAudioSource()
Definition
juce_ToneGeneratorAudioSource.cpp:26
juce::ToneGeneratorAudioSource::getNextAudioBlock
void getNextAudioBlock(const AudioSourceChannelInfo &) override
Definition
juce_ToneGeneratorAudioSource.cpp:63
juce::ToneGeneratorAudioSource::setAmplitude
void setAmplitude(float newAmplitude)
Definition
juce_ToneGeneratorAudioSource.cpp:40
juce::ToneGeneratorAudioSource::~ToneGeneratorAudioSource
~ToneGeneratorAudioSource() override
Definition
juce_ToneGeneratorAudioSource.cpp:35
juce::AudioSourceChannelInfo
Definition
juce_AudioSource.h:33
juce::MathConstants
Definition
juce_MathsFunctions.h:363
JuceLibraryCode
modules
juce_audio_basics
sources
juce_ToneGeneratorAudioSource.cpp
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