mirror of
https://github.com/RGBCube/serenity
synced 2025-05-19 16:15:08 +00:00
d77e7e99e4
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.
90 lines
2.6 KiB
C++
90 lines
2.6 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
|
|
* Copyright (c) 2021, kleines Filmröllchen <malu.bertsch@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "Music.h"
|
|
#include <AK/Noncopyable.h>
|
|
#include <AK/SinglyLinkedList.h>
|
|
#include <LibAudio/Buffer.h>
|
|
|
|
typedef AK::SinglyLinkedListIterator<SinglyLinkedList<RollNote>, RollNote> RollIter;
|
|
|
|
class Track {
|
|
AK_MAKE_NONCOPYABLE(Track);
|
|
AK_MAKE_NONMOVABLE(Track);
|
|
|
|
public:
|
|
explicit Track(const u32& time);
|
|
~Track();
|
|
|
|
const Vector<Audio::Frame>& recorded_sample() const { return m_recorded_sample; }
|
|
const SinglyLinkedList<RollNote>& roll_notes(int note) const { return m_roll_notes[note]; }
|
|
int wave() const { return m_wave; }
|
|
int volume() const { return m_volume; }
|
|
int attack() const { return m_attack; }
|
|
int decay() const { return m_decay; }
|
|
int sustain() const { return m_sustain; }
|
|
int release() const { return m_release; }
|
|
int delay() const { return m_delay; }
|
|
|
|
void fill_sample(Sample& sample);
|
|
void reset();
|
|
String set_recorded_sample(const StringView& path);
|
|
void set_note(int note, Switch);
|
|
void set_roll_note(int note, u32 on_sample, u32 off_sample);
|
|
void set_wave(int wave);
|
|
void set_wave(Direction);
|
|
void set_volume(int volume);
|
|
void set_attack(int attack);
|
|
void set_decay(int decay);
|
|
void set_sustain(int sustain);
|
|
void set_release(int release);
|
|
void set_delay(int delay);
|
|
|
|
private:
|
|
Audio::Frame sine(size_t note);
|
|
Audio::Frame saw(size_t note);
|
|
Audio::Frame square(size_t note);
|
|
Audio::Frame triangle(size_t note);
|
|
Audio::Frame noise(size_t note);
|
|
Audio::Frame recorded_sample(size_t note);
|
|
|
|
void sync_roll(int note);
|
|
void set_sustain_impl(int sustain);
|
|
|
|
Vector<Sample> m_delay_buffer;
|
|
|
|
Vector<Audio::Frame> m_recorded_sample;
|
|
|
|
u8 m_note_on[note_count] { 0 };
|
|
double m_power[note_count] { 0 };
|
|
double m_pos[note_count]; // Initialized lazily.
|
|
// Synths may use this to keep track of the last wave position
|
|
double m_last_w[note_count] { 0 };
|
|
Envelope m_envelope[note_count] { Done };
|
|
|
|
int m_wave { first_wave };
|
|
int m_volume;
|
|
int m_attack;
|
|
double m_attack_step;
|
|
int m_decay;
|
|
double m_decay_step;
|
|
int m_sustain;
|
|
double m_sustain_level;
|
|
int m_release;
|
|
double m_release_step[note_count];
|
|
int m_delay { 0 };
|
|
size_t m_delay_samples { 0 };
|
|
size_t m_delay_index { 0 };
|
|
|
|
const u32& m_time;
|
|
|
|
SinglyLinkedList<RollNote> m_roll_notes[note_count];
|
|
RollIter m_roll_iters[note_count];
|
|
};
|