f085f88835
This change introduces animated time stretching and pitch scaling. It also extends the Python API with AnimateableProperty. Note: to be used, this still needs rubberband. Credit: Kacey La
102 lines
2.7 KiB
C++
102 lines
2.7 KiB
C++
/*******************************************************************************
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* Copyright 2009-2025 Jörg Müller
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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******************************************************************************/
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#pragma once
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/**
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* @file TimeStretchPitchScale.h
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* @ingroup fx
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* The TimeStretchPitchScale class.
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*/
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#include "fx/Effect.h"
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AUD_NAMESPACE_BEGIN
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enum class StretcherQuality
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{
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HIGH = 0, // Prioritize high-quality pitch processing
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FAST = 1, // Prioritize speed over audio quality
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CONSISTENT = 2 // Prioritize consistency for dynamic pitch changes
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};
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/**
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* This sound allows a sound to be time-stretched and pitch scaled.
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* \note The reader has to be seekable.
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*/
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class AUD_API TimeStretchPitchScale : public Effect
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{
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private:
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/**
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* The factor by which to stretch or compress time.
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*/
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double m_timeRatio;
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/**
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* The factor by which to adjust the pitch.
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*/
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double m_pitchScale;
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/**
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* Rubberband stretcher quality.
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*/
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StretcherQuality m_quality;
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/**
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* Whether to preserve the vocal formants during pitch-shifting
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*/
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bool m_preserveFormant;
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// delete copy constructor and operator=
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TimeStretchPitchScale(const TimeStretchPitchScale&) = delete;
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TimeStretchPitchScale& operator=(const TimeStretchPitchScale&) = delete;
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public:
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/**
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* Creates a new time-stretch, pitch scaled sound.
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* \param sound The input sound.
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* \param timeRatio The factor by which to stretch or compress time.
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* \param pitchScale The factor by which to adjust the pitch.
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* \param quality The processing quality level.
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* \param preserveFormant Whether to preserve the vocal formants for the stretcher.
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*/
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TimeStretchPitchScale(std::shared_ptr<ISound> sound, double timeRatio, double pitchScale, StretcherQuality quality, bool preserveFormant);
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/**
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* Returns the time ratio.
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*/
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double getTimeRatio() const;
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/**
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* Returns the pitch scale.
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*/
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double getPitchScale() const;
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/**
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* Returns whether formant preservation is enabled.
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*/
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bool getPreserveFormant() const;
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/**
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* Returns the quality of the stretcher.
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*/
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StretcherQuality getStretcherQuality() const;
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virtual std::shared_ptr<IReader> createReader();
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};
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AUD_NAMESPACE_END
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