mirror of
https://github.com/fergalmoran/ladybird.git
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b14a64b3c8
Almost all synthesizer code in Piano is removed in favor of the LibDSP reimplementation. This causes some issues that mainly have to do with the way Piano currently handles talking to LibDSP. Additionally, the sampler is gone for now and will be reintroduced with future work.
98 lines
2.1 KiB
C++
98 lines
2.1 KiB
C++
/*
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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, JJ Roberts-White <computerfido@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "TrackManager.h"
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#include "Applications/Piano/Music.h"
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TrackManager::TrackManager()
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{
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add_track();
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}
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TrackManager::~TrackManager()
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{
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}
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void TrackManager::time_forward(int amount)
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{
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int new_value = (static_cast<int>(m_time) + amount) % roll_length;
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if (new_value < 0) { // If the new time value is negative add roll_length to wrap around
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m_time = roll_length + new_value;
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} else {
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m_time = new_value;
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}
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}
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void TrackManager::fill_buffer(Span<Sample> buffer)
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{
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memset(buffer.data(), 0, buffer_size);
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for (size_t i = 0; i < buffer.size(); ++i) {
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for (auto& track : m_tracks)
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track->fill_sample(buffer[i]);
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if (++m_time >= roll_length) {
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m_time = 0;
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if (!m_should_loop)
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break;
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}
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}
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memcpy(m_current_back_buffer.data(), buffer.data(), buffer_size);
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swap(m_current_front_buffer, m_current_back_buffer);
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}
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void TrackManager::reset()
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{
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memset(m_front_buffer.data(), 0, buffer_size);
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memset(m_back_buffer.data(), 0, buffer_size);
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m_current_front_buffer = m_front_buffer.span();
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m_current_back_buffer = m_back_buffer.span();
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m_time = 0;
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for (auto& track : m_tracks)
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track->reset();
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}
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void TrackManager::set_keyboard_note(int note, Switch note_switch)
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{
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m_tracks[m_current_track]->set_keyboard_note(note, note_switch);
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}
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void TrackManager::set_octave(Direction direction)
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{
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if (direction == Up) {
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if (m_octave < octave_max)
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++m_octave;
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} else {
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if (m_octave > octave_min)
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--m_octave;
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}
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}
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void TrackManager::set_octave(int octave)
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{
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if (octave <= octave_max && octave >= octave_min) {
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m_octave = octave;
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}
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}
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void TrackManager::add_track()
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{
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m_tracks.append(make<Track>(m_time));
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}
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void TrackManager::next_track()
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{
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if (++m_current_track >= m_tracks.size())
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m_current_track = 0;
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}
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