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dexed/JuceLibraryCode/modules/juce_audio_basics/sources/juce_ToneGeneratorAudioSour...

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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2015 - ROLI Ltd.
Permission is granted to use this software under the terms of either:
a) the GPL v2 (or any later version)
b) the Affero GPL v3
Details of these licenses can be found at: www.gnu.org/licenses
JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
------------------------------------------------------------------------------
To release a closed-source product which uses JUCE, commercial licenses are
available: visit www.juce.com for more information.
==============================================================================
*/
#ifndef JUCE_TONEGENERATORAUDIOSOURCE_H_INCLUDED
#define JUCE_TONEGENERATORAUDIOSOURCE_H_INCLUDED
//==============================================================================
/**
A simple AudioSource that generates a sine wave.
*/
class JUCE_API ToneGeneratorAudioSource : public AudioSource
{
public:
//==============================================================================
/** Creates a ToneGeneratorAudioSource. */
ToneGeneratorAudioSource();
/** Destructor. */
~ToneGeneratorAudioSource();
//==============================================================================
/** Sets the signal's amplitude. */
void setAmplitude (float newAmplitude);
/** Sets the signal's frequency. */
void setFrequency (double newFrequencyHz);
//==============================================================================
/** Implementation of the AudioSource method. */
void prepareToPlay (int samplesPerBlockExpected, double sampleRate) override;
/** Implementation of the AudioSource method. */
void releaseResources() override;
/** Implementation of the AudioSource method. */
void getNextAudioBlock (const AudioSourceChannelInfo&) override;
private:
//==============================================================================
double frequency, sampleRate;
double currentPhase, phasePerSample;
float amplitude;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ToneGeneratorAudioSource)
};
#endif // JUCE_TONEGENERATORAUDIOSOURCE_H_INCLUDED