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Piano: Add track Volume and improve QOL
This patch implements a couple of enhancements to the synthesizer engine: * Each track has a volume control. * The input and tooltips for all controls are improved. * The noise channel is pitched, which allows for basic drum synthesis.
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5 changed files with 87 additions and 39 deletions
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@ -1,6 +1,7 @@
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/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
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* Copyright (c) 2021, kleines Filmröllchen <malu.bertsch@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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@ -25,6 +26,7 @@ public:
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const Vector<Audio::Frame>& recorded_sample() const { return m_recorded_sample; }
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const SinglyLinkedList<RollNote>& roll_notes(int note) const { return m_roll_notes[note]; }
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int wave() const { return m_wave; }
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int volume() const { return m_volume; }
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int attack() const { return m_attack; }
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int decay() const { return m_decay; }
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int sustain() const { return m_sustain; }
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@ -38,6 +40,7 @@ public:
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void set_roll_note(int note, u32 on_sample, u32 off_sample);
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void set_wave(int wave);
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void set_wave(Direction);
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void set_volume(int volume);
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void set_attack(int attack);
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void set_decay(int decay);
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void set_sustain(int sustain);
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@ -49,7 +52,7 @@ private:
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Audio::Frame saw(size_t note);
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Audio::Frame square(size_t note);
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Audio::Frame triangle(size_t note);
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Audio::Frame noise() const;
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Audio::Frame noise(size_t note);
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Audio::Frame recorded_sample(size_t note);
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void sync_roll(int note);
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@ -62,9 +65,12 @@ private:
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u8 m_note_on[note_count] { 0 };
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double m_power[note_count] { 0 };
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double m_pos[note_count]; // Initialized lazily.
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// Synths may use this to keep track of the last wave position
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double m_last_w[note_count] { 0 };
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Envelope m_envelope[note_count] { Done };
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int m_wave { first_wave };
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int m_volume;
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int m_attack;
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double m_attack_step;
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int m_decay;
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