mirror of
https://github.com/RGBCube/serenity
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74f1f2b5e2
Piano now has a toolbar allowing the playback to be paused, or to be stepped forward or back a note.
62 lines
2 KiB
C++
62 lines
2 KiB
C++
/*
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* Copyright (c) 2021, kleines Filmröllchen <malu.bertsch@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 "AudioPlayerLoop.h"
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#include "TrackManager.h"
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// Converts Piano-internal data to an Audio::Buffer that AudioServer receives
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static NonnullRefPtr<Audio::Buffer> music_samples_to_buffer(Array<Sample, sample_count> samples)
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{
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Vector<Audio::Frame, sample_count> frames;
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frames.ensure_capacity(sample_count);
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for (auto sample : samples) {
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Audio::Frame frame = { sample.left / (double)NumericLimits<i16>::max(), sample.right / (double)NumericLimits<i16>::max() };
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frames.unchecked_append(frame);
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}
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return Audio::Buffer::create_with_samples(frames);
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}
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AudioPlayerLoop::AudioPlayerLoop(TrackManager& track_manager, bool& need_to_write_wav, Audio::WavWriter& wav_writer)
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: m_track_manager(track_manager)
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, m_need_to_write_wav(need_to_write_wav)
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, m_wav_writer(wav_writer)
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{
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m_audio_client = Audio::ClientConnection::construct();
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m_audio_client->on_finish_playing_buffer = [this](int buffer_id) {
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(void)buffer_id;
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enqueue_audio();
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};
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}
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void AudioPlayerLoop::enqueue_audio()
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{
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m_track_manager.fill_buffer(m_buffer);
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NonnullRefPtr<Audio::Buffer> audio_buffer = music_samples_to_buffer(m_buffer);
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m_audio_client->async_enqueue(audio_buffer);
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// FIXME: This should be done somewhere else.
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if (m_need_to_write_wav) {
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m_need_to_write_wav = false;
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m_track_manager.reset();
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m_track_manager.set_should_loop(false);
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do {
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m_track_manager.fill_buffer(m_buffer);
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m_wav_writer.write_samples(reinterpret_cast<u8*>(m_buffer.data()), buffer_size);
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} while (m_track_manager.time());
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m_track_manager.reset();
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m_track_manager.set_should_loop(true);
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m_wav_writer.finalize();
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}
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}
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void AudioPlayerLoop::toggle_paused()
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{
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m_should_play_audio = !m_should_play_audio;
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m_audio_client->set_paused(!m_should_play_audio);
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}
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