forked from bartvdbraak/blender
781dd5edb5
All these files were removed since accidental commit, revert and merge in 2.8. ea31f0ac3b877e + 0a4e170c28cec + 11f9a23a286c17f + 7b27b10fa6a6
102 lines
2.2 KiB
C++
102 lines
2.2 KiB
C++
/*******************************************************************************
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* Copyright 2009-2016 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 ADSRReader.h
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* @ingroup fx
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* The ADSRReader class.
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*/
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#include "fx/EffectReader.h"
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AUD_NAMESPACE_BEGIN
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/**
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* This class is an ADSR filters.
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*/
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class AUD_API ADSRReader : public EffectReader
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{
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private:
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enum ADSRState
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{
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ADSR_STATE_INVALID = 0, /// Invalid ADSR state or finished.
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ADSR_STATE_ATTACK = 1, /// Initial attack state.
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ADSR_STATE_DECAY = 2, /// Decay state.
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ADSR_STATE_SUSTAIN = 3, /// Sustain state.
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ADSR_STATE_RELEASE = 4 /// Release state.
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};
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/**
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* Attack time.
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*/
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float m_attack;
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/**
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* Decay time.
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*/
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float m_decay;
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/**
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* Sustain level.
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*/
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float m_sustain;
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/**
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* Release time.
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*/
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float m_release;
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/**
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* Current state.
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*/
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ADSRState m_state;
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/**
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* Current level.
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*/
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float m_level;
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// delete copy constructor and operator=
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ADSRReader(const ADSRReader&) = delete;
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ADSRReader& operator=(const ADSRReader&) = delete;
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void AUD_LOCAL nextState(ADSRState state);
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public:
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/**
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* Creates a new ADSR reader.
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* \param reader The reader to read from.
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* \param attack The attack time in seconds.
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* \param decay The decay time in seconds.
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* \param sustain The sustain level, should be in range [0 - 1].
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* \param release The release time in seconds.
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*/
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ADSRReader(std::shared_ptr<IReader> reader, float attack, float decay, float sustain, float release);
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virtual ~ADSRReader();
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virtual void read(int& length, bool& eos, sample_t* buffer);
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/**
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* Triggers the release.
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*/
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void release();
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};
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AUD_NAMESPACE_END
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