biggy
e4cea300db
Round 1 findings and fixes, all previously uncommitted: - FXProcessor per-slot DSP history repair (HEAD does not compile without it) - SynthVoice::getModulationValue, editor control-lock guard - ExactCompare.h naming the deliberate exact float comparisons - KnobLookAndFeel replacing the never-installed SerumLookAndFeel - 55 first-party compiler warnings to 0 - AGENT.md renamed to AGENTS.md across Source/ - graft repository context graph and its hooks - JANITOR_TASKS.md and UI_UX_AUDIT.md records
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
#pragma once
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#include <JuceHeader.h>
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namespace serum
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{
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// Curve-to-shape mapping shared by the envelope DSP and the GUI preview, so the
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// two cannot drift apart.
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inline float attackShapeFor (float curve) noexcept { return 0.3f + curve * 2.7f; } // 0.3 .. 3.0
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inline float decayShapeFor (float curve) noexcept { return 3.0f - curve * 2.7f; } // 3.0 .. 0.3
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// ===========================================================================
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// ADSR envelope with curve tension. Durations are in seconds; the sustain
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// level is 0..1. Retriggering (noteOn while active) starts from the current
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// value for click-free legato behaviour.
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// ===========================================================================
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class Envelope
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{
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public:
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void prepare (double sampleRate) { sr = sampleRate; reset(); }
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void reset();
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void noteOn();
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void noteOff();
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void setParams (float attackSec, float decaySec, float sustain, float releaseSec, float curve);
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float process() noexcept; // advance one sample and return the value
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float getValue() const noexcept { return value; }
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bool isActive() const noexcept { return stage != Stage::Idle; }
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// Snapshot for GUI rendering.
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struct Shape { float attack = 0, decay = 0, sustain = 0, release = 0, curve = 0.5f; };
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Shape getShape() const noexcept { return shape; }
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private:
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enum class Stage { Idle, Attack, Decay, Sustain, Release };
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Stage stage = Stage::Idle;
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double sr = 44100.0;
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float value = 0.0f;
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float startValue = 0.0f, endValue = 0.0f;
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double elapsed = 0.0, duration = 0.0;
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double attackShape = 1.0, decayShape = 1.0;
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float sustain = 0.7f;
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double attackSamples = 0.0, decaySamples = 0.0, releaseSamples = 0.0;
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Shape shape;
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};
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} // namespace serum
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