/* ============================================================================== This file is part of the JUCE library. Copyright (c) 2017 - ROLI Ltd. 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 5 End-User License Agreement and JUCE 5 Privacy Policy (both updated and effective as of the 27th April 2017). End User License Agreement: www.juce.com/juce-5-licence Privacy Policy: www.juce.com/juce-5-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 { //============================================================================== /** A subclass of SynthesiserSound that represents a sampled audio clip. This is a pretty basic sampler, and just attempts to load the whole audio stream into memory. To use it, create a Synthesiser, add some SamplerVoice objects to it, then give it some SampledSound objects to play. @see SamplerVoice, Synthesiser, SynthesiserSound @tags{Audio} */ class JUCE_API SamplerSound : public SynthesiserSound { public: //============================================================================== /** Creates a sampled sound from an audio reader. This will attempt to load the audio from the source into memory and store it in this object. @param name a name for the sample @param source the audio to load. This object can be safely deleted by the caller after this constructor returns @param midiNotes the set of midi keys that this sound should be played on. This is used by the SynthesiserSound::appliesToNote() method @param midiNoteForNormalPitch the midi note at which the sample should be played with its natural rate. All other notes will be pitched up or down relative to this one @param attackTimeSecs the attack (fade-in) time, in seconds @param releaseTimeSecs the decay (fade-out) time, in seconds @param maxSampleLengthSeconds a maximum length of audio to read from the audio source, in seconds */ SamplerSound (const String& name, AudioFormatReader& source, const BigInteger& midiNotes, int midiNoteForNormalPitch, double attackTimeSecs, double releaseTimeSecs, double maxSampleLengthSeconds); /** Destructor. */ ~SamplerSound(); //============================================================================== /** Returns the sample's name */ const String& getName() const noexcept { return name; } /** Returns the audio sample data. This could return nullptr if there was a problem loading the data. */ AudioBuffer* getAudioData() const noexcept { return data.get(); } //============================================================================== bool appliesToNote (int midiNoteNumber) override; bool appliesToChannel (int midiChannel) override; private: //============================================================================== friend class SamplerVoice; String name; std::unique_ptr> data; double sourceSampleRate; BigInteger midiNotes; int length = 0, attackSamples = 0, releaseSamples = 0; int midiRootNote = 0; JUCE_LEAK_DETECTOR (SamplerSound) }; //============================================================================== /** A subclass of SynthesiserVoice that can play a SamplerSound. To use it, create a Synthesiser, add some SamplerVoice objects to it, then give it some SampledSound objects to play. @see SamplerSound, Synthesiser, SynthesiserVoice @tags{Audio} */ class JUCE_API SamplerVoice : public SynthesiserVoice { public: //============================================================================== /** Creates a SamplerVoice. */ SamplerVoice(); /** Destructor. */ ~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 (AudioBuffer&, int startSample, int numSamples) override; private: //============================================================================== double pitchRatio = 0; double sourceSamplePosition = 0; float lgain = 0, rgain = 0, attackReleaseLevel = 0, attackDelta = 0, releaseDelta = 0; bool isInAttack = false, isInRelease = false; JUCE_LEAK_DETECTOR (SamplerVoice) }; } // namespace juce