353 lines
10 KiB
C++
353 lines
10 KiB
C++
/*
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* Strawberry Music Player
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* This file was part of Clementine.
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* Copyright 2010, David Sansome <me@davidsansome.com>
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* Copyright 2017-2018, Jonas Kvinge <jonas@jkvinge.net>
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*
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* Strawberry is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Strawberry is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "config.h"
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#include <algorithm>
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#include <optional>
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#include <vlc/vlc.h>
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#include <QtGlobal>
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#include <QMetaType>
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#include <QVariant>
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#include <QByteArray>
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#include <QUrl>
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#include "core/shared_ptr.h"
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#include "core/taskmanager.h"
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#include "core/logging.h"
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#include "utilities/timeconstants.h"
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#include "enginebase.h"
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#include "vlcengine.h"
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#include "vlcscopedref.h"
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VLCEngine::VLCEngine(SharedPtr<TaskManager> task_manager, QObject *parent)
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: EngineBase(parent),
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instance_(nullptr),
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player_(nullptr),
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state_(State::Empty) {
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Q_UNUSED(task_manager);
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ReloadSettings();
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}
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VLCEngine::~VLCEngine() {
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if (state_ == State::Playing || state_ == State::Paused) {
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libvlc_media_player_stop(player_);
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}
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libvlc_event_manager_t *player_em = libvlc_media_player_event_manager(player_);
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if (player_em) {
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libvlc_event_detach(player_em, libvlc_MediaPlayerEncounteredError, StateChangedCallback, this);
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libvlc_event_detach(player_em, libvlc_MediaPlayerNothingSpecial, StateChangedCallback, this);
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libvlc_event_detach(player_em, libvlc_MediaPlayerOpening, StateChangedCallback, this);
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libvlc_event_detach(player_em, libvlc_MediaPlayerBuffering, StateChangedCallback, this);
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libvlc_event_detach(player_em, libvlc_MediaPlayerPlaying, StateChangedCallback, this);
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libvlc_event_detach(player_em, libvlc_MediaPlayerPaused, StateChangedCallback, this);
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libvlc_event_detach(player_em, libvlc_MediaPlayerStopped, StateChangedCallback, this);
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libvlc_event_detach(player_em, libvlc_MediaPlayerEndReached, StateChangedCallback, this);
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}
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libvlc_media_player_release(player_);
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libvlc_release(instance_);
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}
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bool VLCEngine::Init() {
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// Create the VLC instance
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instance_ = libvlc_new(0, nullptr);
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if (!instance_) return false;
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// Create the media player
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player_ = libvlc_media_player_new(instance_);
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if (!player_) return false;
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// Add event handlers
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libvlc_event_manager_t *player_em = libvlc_media_player_event_manager(player_);
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if (!player_em) return false;
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AttachCallback(player_em, libvlc_MediaPlayerEncounteredError, StateChangedCallback);
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AttachCallback(player_em, libvlc_MediaPlayerNothingSpecial, StateChangedCallback);
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AttachCallback(player_em, libvlc_MediaPlayerOpening, StateChangedCallback);
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AttachCallback(player_em, libvlc_MediaPlayerBuffering, StateChangedCallback);
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AttachCallback(player_em, libvlc_MediaPlayerPlaying, StateChangedCallback);
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AttachCallback(player_em, libvlc_MediaPlayerPaused, StateChangedCallback);
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AttachCallback(player_em, libvlc_MediaPlayerStopped, StateChangedCallback);
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AttachCallback(player_em, libvlc_MediaPlayerEndReached, StateChangedCallback);
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return true;
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}
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bool VLCEngine::Load(const QUrl &media_url, const QUrl &stream_url, const EngineBase::TrackChangeFlags change, const bool force_stop_at_end, const quint64 beginning_nanosec, const qint64 end_nanosec, const std::optional<double> ebur128_integrated_loudness_lufs) {
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// FIXME: why is this not calling `EngineBase::Load()`?
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Q_UNUSED(media_url);
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Q_UNUSED(ebur128_integrated_loudness_lufs);
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Q_UNUSED(change);
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Q_UNUSED(force_stop_at_end);
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Q_UNUSED(beginning_nanosec);
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Q_UNUSED(end_nanosec);
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if (!Initialized()) return false;
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// Create the media object
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VlcScopedRef<libvlc_media_t> media(libvlc_media_new_location(instance_, stream_url.toEncoded().constData()));
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libvlc_media_player_set_media(player_, media);
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return true;
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}
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bool VLCEngine::Play(const quint64 offset_nanosec) {
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if (!Initialized()) return false;
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// Set audio output
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if (!output_.isEmpty() && output_ != QStringLiteral("auto")) {
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int result = libvlc_audio_output_set(player_, output_.toUtf8().constData());
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if (result != 0) qLog(Error) << "Failed to set output to" << output_;
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}
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// Set audio device
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if (device_.isValid() &&
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#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
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device_.metaType().id() == QMetaType::QString
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#else
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device_.type() == QVariant::String
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#endif
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&& !device_.toString().isEmpty()) {
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libvlc_audio_output_device_set(player_, nullptr, device_.toString().toLocal8Bit().data());
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}
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int result = libvlc_media_player_play(player_);
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if (result != 0) return false;
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Seek(offset_nanosec);
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return true;
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}
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void VLCEngine::Stop(const bool stop_after) {
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Q_UNUSED(stop_after);
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if (!Initialized()) return;
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libvlc_media_player_stop(player_);
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}
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void VLCEngine::Pause() {
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if (!Initialized()) return;
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libvlc_media_player_pause(player_);
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}
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void VLCEngine::Unpause() {
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if (!Initialized()) return;
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libvlc_media_player_play(player_);
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}
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void VLCEngine::Seek(const quint64 offset_nanosec) {
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if (!Initialized()) return;
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int offset = static_cast<int>(offset_nanosec / kNsecPerMsec);
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uint len = length();
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if (len == 0) return;
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float pos = static_cast<float>(offset) / static_cast<float>(len);
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libvlc_media_player_set_position(player_, pos);
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}
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void VLCEngine::SetVolumeSW(const uint percent) {
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if (!Initialized()) return;
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if (!volume_control_ && percent != 100) return;
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libvlc_audio_set_volume(player_, static_cast<int>(percent));
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}
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qint64 VLCEngine::position_nanosec() const {
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if (state_ == State::Empty) return 0;
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const qint64 result = (position() * kNsecPerMsec);
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return qMax(0LL, result);
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}
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qint64 VLCEngine::length_nanosec() const {
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if (state_ == State::Empty) return 0;
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const qint64 result = (end_nanosec_ - static_cast<qint64>(beginning_nanosec_));
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if (result > 0) {
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return result;
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}
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else {
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// Get the length from the pipeline if we don't know.
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return (length() * kNsecPerMsec);
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}
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}
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EngineBase::OutputDetailsList VLCEngine::GetOutputsList() const {
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OutputDetailsList outputs;
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OutputDetails output_auto;
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output_auto.name = QStringLiteral("auto");
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output_auto.description = QStringLiteral("Automatically detected");
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outputs << output_auto;
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libvlc_audio_output_t *audio_output_list = libvlc_audio_output_list_get(instance_);
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for (libvlc_audio_output_t *audio_output = audio_output_list; audio_output; audio_output = audio_output->p_next) {
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OutputDetails output;
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output.name = QString::fromUtf8(audio_output->psz_name);
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output.description = QString::fromUtf8(audio_output->psz_description);
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if (output.name == QStringLiteral("auto")) output.iconname = QStringLiteral("soundcard");
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else if ((output.name == QStringLiteral("alsa"))||(output.name == QStringLiteral("oss"))) output.iconname = QStringLiteral("alsa");
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else if (output.name== QStringLiteral("jack")) output.iconname = QStringLiteral("jack");
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else if (output.name == QStringLiteral("pulse")) output.iconname = QStringLiteral("pulseaudio");
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else if (output.name == QStringLiteral("afile")) output.iconname = QStringLiteral("document-new");
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else output.iconname = QStringLiteral("soundcard");
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outputs << output;
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}
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libvlc_audio_output_list_release(audio_output_list);
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return outputs;
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}
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bool VLCEngine::ValidOutput(const QString &output) {
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const OutputDetailsList output_details = GetOutputsList();
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return std::any_of(output_details.begin(), output_details.end(), [output](const OutputDetails &output_detail) { return output_detail.name == output; });
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}
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bool VLCEngine::CustomDeviceSupport(const QString &output) {
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return (output != QStringLiteral("auto"));
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}
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bool VLCEngine::ALSADeviceSupport(const QString &output) {
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return (output == QStringLiteral("alsa"));
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}
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bool VLCEngine::ExclusiveModeSupport(const QString &output) {
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Q_UNUSED(output);
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return false;
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}
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uint VLCEngine::position() const {
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if (!Initialized() || !libvlc_media_player_is_playing(player_)) return 0;
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float pos = libvlc_media_player_get_position(player_);
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return static_cast<uint>(pos * static_cast<float>(length()));
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}
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uint VLCEngine::length() const {
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if (!Initialized() || !libvlc_media_player_is_playing(player_)) return 0;
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return libvlc_media_player_get_length(player_);
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}
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bool VLCEngine::CanDecode(const QUrl &url) { Q_UNUSED(url); return true; }
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void VLCEngine::AttachCallback(libvlc_event_manager_t *em, libvlc_event_type_t type, libvlc_callback_t callback) {
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if (libvlc_event_attach(em, type, callback, this) != 0) {
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qLog(Error) << "Failed to attach callback.";
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}
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}
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void VLCEngine::StateChangedCallback(const libvlc_event_t *e, void *data) {
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VLCEngine *engine = reinterpret_cast<VLCEngine*>(data);
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switch (e->type) {
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case libvlc_MediaPlayerNothingSpecial:
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case libvlc_MediaPlayerOpening:
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case libvlc_MediaPlayerBuffering:
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break;
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case libvlc_MediaPlayerStopped:{
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const EngineBase::State state = engine->state_;
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engine->state_ = EngineBase::State::Empty;
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if (state == EngineBase::State::Playing) {
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emit engine->StateChanged(engine->state_);
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}
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break;
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}
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case libvlc_MediaPlayerEncounteredError:
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engine->state_ = EngineBase::State::Error;
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emit engine->StateChanged(engine->state_);
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emit engine->FatalError();
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break;
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case libvlc_MediaPlayerPlaying:
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engine->state_ = EngineBase::State::Playing;
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emit engine->StateChanged(engine->state_);
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break;
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case libvlc_MediaPlayerPaused:
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engine->state_ = EngineBase::State::Paused;
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emit engine->StateChanged(engine->state_);
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break;
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case libvlc_MediaPlayerEndReached:
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engine->state_ = EngineBase::State::Idle;
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emit engine->TrackEnded();
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break;
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}
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}
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void VLCEngine::GetDevicesList(const QString &output) const {
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Q_UNUSED(output);
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libvlc_audio_output_device_t *audio_output_device_list = libvlc_audio_output_device_list_get(instance_, output_.toUtf8().constData());
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for (libvlc_audio_output_device_t *audio_device = audio_output_device_list; audio_device; audio_device = audio_device->p_next) {
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qLog(Debug) << audio_device->psz_device << audio_device->psz_description;
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}
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libvlc_audio_output_device_list_release(audio_output_device_list);
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}
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