mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-13 00:04:19 +00:00
80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
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 SYNTH_H_INCLUDED
|
|
#define SYNTH_H_INCLUDED
|
|
|
|
|
|
//==============================================================================
|
|
class DemoSynth: public ExpressiveMidiSynthesiserBase
|
|
{
|
|
public:
|
|
DemoSynth()
|
|
: noiseLevel (0.0f)
|
|
{
|
|
}
|
|
|
|
void noteAdded (ExpressiveMidiNote newNote) override
|
|
{
|
|
noiseLevel += 0.05f;
|
|
}
|
|
|
|
void noteChanged (ExpressiveMidiNote changedNote) override
|
|
{
|
|
// nothing!
|
|
}
|
|
|
|
void noteReleased (ExpressiveMidiNote finishedNote) override
|
|
{
|
|
noiseLevel -= 0.05f;
|
|
}
|
|
|
|
protected:
|
|
//==========================================================================
|
|
void renderNextSubBlock (AudioBuffer<float>& outputAudio,
|
|
int startSample,
|
|
int numSamples) override
|
|
{
|
|
while (--numSamples >= 0)
|
|
{
|
|
for (int i = outputAudio.getNumChannels(); --i >= 0;)
|
|
{
|
|
float randomFloatWithinRange = (2.0f * float (std::rand()) / float (std::numeric_limits<int>::max())) - 1.0f;
|
|
const float currentSample = noiseLevel * randomFloatWithinRange;
|
|
|
|
outputAudio.addSample (i, startSample, currentSample);
|
|
}
|
|
|
|
++startSample;
|
|
}
|
|
}
|
|
|
|
private:
|
|
//==========================================================================
|
|
float noiseLevel;
|
|
};
|
|
|
|
|
|
#endif // SYNTH_H_INCLUDED
|