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/*
* 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.
*/
#include "TrackManager.h"
TrackManager::TrackManager()
{
add_track();
}
TrackManager::~TrackManager()
{
}
void TrackManager::fill_buffer(Span<Sample> buffer)
{
memset(buffer.data(), 0, buffer_size);
for (size_t i = 0; i < buffer.size(); ++i) {
for (auto& track : m_tracks)
track->fill_sample(buffer[i]);
if (++m_time >= roll_length) {
m_time = 0;
if (!m_should_loop)
break;
}
}
memcpy(m_current_back_buffer.data(), buffer.data(), buffer_size);
swap(m_current_front_buffer, m_current_back_buffer);
}
void TrackManager::reset()
{
memset(m_front_buffer.data(), 0, buffer_size);
memset(m_back_buffer.data(), 0, buffer_size);
m_current_front_buffer = m_front_buffer.span();
m_current_back_buffer = m_back_buffer.span();
m_time = 0;
for (auto& track : m_tracks)
track->reset();
}
void TrackManager::set_note_current_octave(int note, Switch switch_note)
{
current_track().set_note(note + octave_base(), switch_note);
}
void TrackManager::set_octave(Direction direction)
{
if (direction == Up) {
if (m_octave < octave_max)
++m_octave;
} else {
if (m_octave > octave_min)
--m_octave;
}
}
void TrackManager::set_octave(int octave)
{
if (octave <= octave_max && octave >= octave_min) {
m_octave = octave;
}
}
void TrackManager::add_track()
{
m_tracks.append(make<Track>(m_time));
}
void TrackManager::next_track()
{
if (++m_current_track >= m_tracks.size())
m_current_track = 0;
}
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