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74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
/*
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* Copyright (c) 2021, kleines Filmröllchen <filmroellchen@serenityos.org>
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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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#include <AK/FixedArray.h>
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#include <AK/NumericLimits.h>
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#include <LibAudio/ConnectionToServer.h>
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#include <LibAudio/Resampler.h>
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#include <LibAudio/Sample.h>
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#include <LibCore/EventLoop.h>
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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_buffer(FixedArray<DSP::Sample>::must_create_but_fixme_should_propagate_errors(sample_count))
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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::ConnectionToServer::try_create().release_value_but_fixme_should_propagate_errors();
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auto target_sample_rate = m_audio_client->get_sample_rate();
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if (target_sample_rate == 0)
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target_sample_rate = Music::sample_rate;
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m_resampler = Audio::ResampleHelper<DSP::Sample>(Music::sample_rate, target_sample_rate);
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// FIXME: I said I would never write such a hack again, but here we are.
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// This code should die as soon as possible anyways, so it doesn't matter.
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// Please don't use this as an example to write good audio code; it's just here as a temporary hack.
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Core::EventLoop::register_timer(*this, 5, true, Core::TimerShouldFireWhenNotVisible::Yes);
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}
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void AudioPlayerLoop::timer_event(Core::TimerEvent&)
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{
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while (m_audio_client->remaining_samples() < sample_count)
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enqueue_audio();
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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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// FIXME: Handle OOM better.
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auto audio_buffer = m_resampler->resample(m_buffer);
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(void)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(m_buffer.span());
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} while (m_track_manager.transport()->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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if (m_should_play_audio)
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m_audio_client->async_start_playback();
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else
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m_audio_client->async_pause_playback();
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}
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