mirror of
https://github.com/RGBCube/serenity
synced 2025-07-07 12:17:36 +00:00
ee52572ca1
This commit adds multi-track functionality without exposing it to the user. All I really did was rename AudioEngine to Track and allow more than one Track in TrackManager. A lot of the changes are just changing widgets to take a TrackManager and use current_track(). The TrackManager creates Tracks and gives them a read-only reference to the global time value. When the TrackManager wants to fill a sample in the buffer (in fill_buffer()), it calls fill_sample() on each Track. The delay code is slightly different - a Track will fill its m_delay_buffer with the sample it just created rather than the most recent sample in the buffer (which used to be the same thing). TrackManager manages the current octave. Other than those few things, this is a pretty basic separation of concerns.
104 lines
3.6 KiB
C++
104 lines
3.6 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* Copyright (c) 2019-2020, William McPherson <willmcpherson2@gmail.com>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "Music.h"
|
|
#include <AK/FixedArray.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::Sample>& 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 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_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::Sample sine(size_t note);
|
|
Audio::Sample saw(size_t note);
|
|
Audio::Sample square(size_t note);
|
|
Audio::Sample triangle(size_t note);
|
|
Audio::Sample noise() const;
|
|
Audio::Sample recorded_sample(size_t note);
|
|
|
|
void sync_roll(int note);
|
|
void set_sustain_impl(int sustain);
|
|
|
|
Vector<Sample> m_delay_buffer;
|
|
|
|
Vector<Audio::Sample> m_recorded_sample;
|
|
|
|
u8 m_note_on[note_count] { 0 };
|
|
double m_power[note_count] { 0 };
|
|
double m_pos[note_count]; // Initialized lazily.
|
|
Envelope m_envelope[note_count] { Done };
|
|
|
|
int m_wave { first_wave };
|
|
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];
|
|
};
|