JUCE/extras/audio plugins/demo/Source/PluginProcessor.h

/*
  ==============================================================================

    This file was auto-generated by the Jucer!

    It contains the basic startup code for a Juce application.

  ==============================================================================
*/

#ifndef __PLUGINPROCESSOR_H_526ED7A9__
#define __PLUGINPROCESSOR_H_526ED7A9__

#include "../JuceLibraryCode/JuceHeader.h"
#include "../JuceLibraryCode/JucePluginCharacteristics.h"


//==============================================================================
/**
*/
class JuceDemoPluginAudioProcessor  : public AudioProcessor
{
public:
    //==============================================================================
    JuceDemoPluginAudioProcessor();
    ~JuceDemoPluginAudioProcessor();

    //==============================================================================
    void prepareToPlay (double sampleRate, int samplesPerBlock);
    void releaseResources();

    void processBlock (AudioSampleBuffer& buffer, MidiBuffer& midiMessages);

    //==============================================================================
    bool hasEditor() const                  { return true; }
    AudioProcessorEditor* createEditor();

    //==============================================================================
    const String getName() const            { return JucePlugin_Name; }

    int getNumParameters();
    float getParameter (int index);
    void setParameter (int index, float newValue);
    const String getParameterName (int index);
    const String getParameterText (int index);

    const String getInputChannelName (int channelIndex) const;
    const String getOutputChannelName (int channelIndex) const;
    bool isInputChannelStereoPair (int index) const;
    bool isOutputChannelStereoPair (int index) const;

    bool acceptsMidi() const;
    bool producesMidi() const;

    //==============================================================================
    int getNumPrograms()                                                { return 0; }
    int getCurrentProgram()                                             { return 0; }
    void setCurrentProgram (int /*index*/)                              { }
    const String getProgramName (int /*index*/)                         { return String::empty; }
    void changeProgramName (int /*index*/, const String& /*newName*/)   { }

    //==============================================================================
    void getStateInformation (MemoryBlock& destData);
    void setStateInformation (const void* data, int sizeInBytes);

    //==============================================================================
    // These properties are public so that our editor component can access them
    // A bit of a hacky way to do it, but it's only a demo! Obviously in your own
    // code you'll do this much more neatly..

    // this is kept up to date with the midi messages that arrive, and the UI component
    // registers with it so it can represent the incoming messages
    MidiKeyboardState keyboardState;

    // this keeps a copy of the last set of time info that was acquired during an audio
    // callback - the UI component will read this and display it.
    AudioPlayHead::CurrentPositionInfo lastPosInfo;

    // these are used to persist the UI's size - the values are stored along with the
    // filter's other parameters, and the UI component will update them when it gets
    // resized.
    int lastUIWidth, lastUIHeight;

    //==============================================================================
    enum Parameters
    {
        gainParam = 0,
        delayParam,

        totalNumParams
    };

    float gain, delay;

private:
    //==============================================================================
    AudioSampleBuffer delayBuffer;
    int delayPosition;

    // the synth!
    Synthesiser synth;

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (JuceDemoPluginAudioProcessor);
};

#endif  // __PLUGINPROCESSOR_H_526ED7A9__