juce_AudioVisualiserComponent.h

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 /*
  ==============================================================================
 
   This file is part of the JUCE library.
   Copyright (c) 2022 - Raw Material Software Limited
 
   JUCE is an open source library subject to commercial or open-source
   licensing.
 
   By using JUCE, you agree to the terms of both the JUCE 7 End-User License
   Agreement and JUCE Privacy Policy.
 
   End User License Agreement: www.juce.com/juce-7-licence
   Privacy Policy: www.juce.com/juce-privacy-policy
 
   Or: You may also use this code under the terms of the GPL v3 (see
   www.gnu.org/licenses).
 
   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.
 
  ==============================================================================
*/
 
namespace juce
{
 
//==============================================================================
class JUCE_API AudioVisualiserComponent  : public Component,
                                           private Timer
{
public:
    AudioVisualiserComponent (int initialNumChannels);
 
    ~AudioVisualiserComponent() override;
 
    void setNumChannels (int numChannels);
 
    void setBufferSize (int bufferSize);
 
    void setSamplesPerBlock (int newNumInputSamplesPerBlock) noexcept;
 
    int getSamplesPerBlock() const noexcept                         { return inputSamplesPerBlock; }
 
    void clear();
 
    void pushBuffer (const AudioBuffer<float>& bufferToPush);
 
    void pushBuffer (const AudioSourceChannelInfo& bufferToPush);
 
    void pushBuffer (const float* const* channelData, int numChannels, int numSamples);
 
    void pushSample (const float* samplesForEachChannel, int numChannels);
 
    void setColours (Colour backgroundColour, Colour waveformColour) noexcept;
 
    void setRepaintRate (int frequencyInHz);
 
    virtual void paintChannel (Graphics&, Rectangle<float> bounds,
                               const Range<float>* levels, int numLevels, int nextSample);
 
    void getChannelAsPath (Path& result, const Range<float>* levels, int numLevels, int nextSample);
 
    //==============================================================================
    void paint (Graphics&) override;
 
private:
    struct ChannelInfo;
 
    OwnedArray<ChannelInfo> channels;
    int numSamples, inputSamplesPerBlock;
    Colour backgroundColour, waveformColour;
 
    void timerCallback() override;
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AudioVisualiserComponent)
};
 
} // namespace juce