65 lines
No EOL
2.3 KiB
C++
65 lines
No EOL
2.3 KiB
C++
// Copyright (c) 2019, Paul Ferrand
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// All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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// 1. Redistributions of source code must retain the above copyright notice, this
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// list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#pragma once
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#include "Helpers.h"
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#include <absl/types/span.h>
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namespace sfz {
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template <class Type>
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class ADSREnvelope {
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public:
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ADSREnvelope() = default;
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void reset(int attack, int release, Type sustain = 1.0, int delay = 0, int decay = 0, int hold = 0, Type start = 0.0, Type depth = 1) noexcept;
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Type getNextValue() noexcept;
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void getBlock(absl::Span<Type> output) noexcept;
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void startRelease(int releaseDelay) noexcept;
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bool isSmoothing() noexcept;
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private:
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enum class State {
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Delay,
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Attack,
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Hold,
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Decay,
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Sustain,
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Release,
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Done
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};
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State currentState { State::Done };
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Type currentValue { 0.0 };
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Type step { 0.0 };
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int delay { 0 };
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int attack { 0 };
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int decay { 0 };
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int release { 0 };
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int hold { 0 };
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Type start { 0 };
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Type peak { 0 };
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Type sustain { 0 };
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int releaseDelay { 0 };
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bool shouldRelease { false };
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LEAK_DETECTOR(ADSREnvelope);
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};
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} |