OpenShot Audio Library | OpenShotAudio  0.3.3
juce_Sampler.h
1 /*
2  ==============================================================================
3 
4  This file is part of the JUCE library.
5  Copyright (c) 2017 - ROLI Ltd.
6 
7  JUCE is an open source library subject to commercial or open-source
8  licensing.
9 
10  By using JUCE, you agree to the terms of both the JUCE 5 End-User License
11  Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
12  27th April 2017).
13 
14  End User License Agreement: www.juce.com/juce-5-licence
15  Privacy Policy: www.juce.com/juce-5-privacy-policy
16 
17  Or: You may also use this code under the terms of the GPL v3 (see
18  www.gnu.org/licenses).
19 
20  JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
21  EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
22  DISCLAIMED.
23 
24  ==============================================================================
25 */
26 
27 namespace juce
28 {
29 
30 //==============================================================================
44 class JUCE_API SamplerSound : public SynthesiserSound
45 {
46 public:
47  //==============================================================================
66  SamplerSound (const String& name,
67  AudioFormatReader& source,
68  const BigInteger& midiNotes,
69  int midiNoteForNormalPitch,
70  double attackTimeSecs,
71  double releaseTimeSecs,
72  double maxSampleLengthSeconds);
73 
75  ~SamplerSound() override;
76 
77  //==============================================================================
79  const String& getName() const noexcept { return name; }
80 
84  AudioBuffer<float>* getAudioData() const noexcept { return data.get(); }
85 
86  //==============================================================================
88  void setEnvelopeParameters (ADSR::Parameters parametersToUse) { params = parametersToUse; }
89 
90  //==============================================================================
91  bool appliesToNote (int midiNoteNumber) override;
92  bool appliesToChannel (int midiChannel) override;
93 
94 private:
95  //==============================================================================
96  friend class SamplerVoice;
97 
98  String name;
99  std::unique_ptr<AudioBuffer<float>> data;
100  double sourceSampleRate;
101  BigInteger midiNotes;
102  int length = 0, midiRootNote = 0;
103 
104  ADSR::Parameters params;
105 
106  JUCE_LEAK_DETECTOR (SamplerSound)
107 };
108 
109 
110 //==============================================================================
121 class JUCE_API SamplerVoice : public SynthesiserVoice
122 {
123 public:
124  //==============================================================================
126  SamplerVoice();
127 
129  ~SamplerVoice() override;
130 
131  //==============================================================================
132  bool canPlaySound (SynthesiserSound*) override;
133 
134  void startNote (int midiNoteNumber, float velocity, SynthesiserSound*, int pitchWheel) override;
135  void stopNote (float velocity, bool allowTailOff) override;
136 
137  void pitchWheelMoved (int newValue) override;
138  void controllerMoved (int controllerNumber, int newValue) override;
139 
140  void renderNextBlock (AudioBuffer<float>&, int startSample, int numSamples) override;
142 
143 private:
144  //==============================================================================
145  double pitchRatio = 0;
146  double sourceSamplePosition = 0;
147  float lgain = 0, rgain = 0;
148 
149  ADSR adsr;
150 
151  JUCE_LEAK_DETECTOR (SamplerVoice)
152 };
153 
154 } // namespace juce
const String & getName() const noexcept
Definition: juce_Sampler.h:79
AudioBuffer< float > * getAudioData() const noexcept
Definition: juce_Sampler.h:84
void setEnvelopeParameters(ADSR::Parameters parametersToUse)
Definition: juce_Sampler.h:88
virtual void renderNextBlock(AudioBuffer< float > &outputBuffer, int startSample, int numSamples)=0