juce_Sampler.h

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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_SAMPLER_H_INCLUDED
#define JUCE_SAMPLER_H_INCLUDED
 
 
//==============================================================================
class JUCE_API  SamplerSound    : public SynthesiserSound
{
public:
    //==============================================================================
    SamplerSound (const String& name,
                  AudioFormatReader& source,
                  const BigInteger& midiNotes,
                  int midiNoteForNormalPitch,
                  double attackTimeSecs,
                  double releaseTimeSecs,
                  double maxSampleLengthSeconds);
 
    ~SamplerSound();
 
    //==============================================================================
    const String& getName() const noexcept                  { return name; }
 
    AudioSampleBuffer* getAudioData() const noexcept        { return data; }
 
 
    //==============================================================================
    bool appliesToNote (int midiNoteNumber) override;
    bool appliesToChannel (int midiChannel) override;
 
 
private:
    //==============================================================================
    friend class SamplerVoice;
 
    String name;
    ScopedPointer<AudioSampleBuffer> data;
    double sourceSampleRate;
    BigInteger midiNotes;
    int length, attackSamples, releaseSamples;
    int midiRootNote;
 
    JUCE_LEAK_DETECTOR (SamplerSound)
};
 
 
//==============================================================================
class JUCE_API  SamplerVoice    : public SynthesiserVoice
{
public:
    //==============================================================================
    SamplerVoice();
 
    ~SamplerVoice();
 
    //==============================================================================
    bool canPlaySound (SynthesiserSound*) override;
 
    void startNote (int midiNoteNumber, float velocity, SynthesiserSound*, int pitchWheel) override;
    void stopNote (float velocity, bool allowTailOff) override;
 
    void pitchWheelMoved (int newValue) override;
    void controllerMoved (int controllerNumber, int newValue) override;
 
    void renderNextBlock (AudioSampleBuffer&, int startSample, int numSamples) override;
 
 
private:
    //==============================================================================
    double pitchRatio;
    double sourceSamplePosition;
    float lgain, rgain, attackReleaseLevel, attackDelta, releaseDelta;
    bool isInAttack, isInRelease;
 
    JUCE_LEAK_DETECTOR (SamplerVoice)
};
 
 
#endif   // JUCE_SAMPLER_H_INCLUDED