431 lines
16 KiB
C++
431 lines
16 KiB
C++
/*
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* Sailfin: a Jellyfin client written using Qt
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* Copyright (C) 2021 Chris Josten and the Sailfin Contributors.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "JellyfinQt/viewmodel/playbackmanager.h"
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#include "JellyfinQt/apimodel.h"
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// #include "JellyfinQt/DTO/dto.h"
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#include <JellyfinQt/dto/useritemdatadto.h>
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#include <utility>
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namespace Jellyfin {
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class ItemModel;
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namespace DTO {
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using UserData = UserItemDataDto;
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}
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namespace ViewModel {
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PlaybackManager::PlaybackManager(QObject *parent)
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: QObject(parent),
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m_item(nullptr),
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m_mediaPlayer1(new QMediaPlayer(this)),
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m_mediaPlayer2(new QMediaPlayer(this)),
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m_urlFetcherThread(new ItemUrlFetcherThread(this)),
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m_queue(new Model::Playlist(this)) {
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// Set up connections.
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swapMediaPlayer();
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m_updateTimer.setInterval(10000); // 10 seconds
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m_updateTimer.setSingleShot(false);
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m_preloadTimer.setSingleShot(true);
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connect(this, &QObject::destroyed, this, &PlaybackManager::onDestroyed);
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connect(&m_updateTimer, &QTimer::timeout, this, &PlaybackManager::updatePlaybackInfo);
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connect(m_urlFetcherThread, &ItemUrlFetcherThread::itemUrlFetched, this, &PlaybackManager::onItemExtraDataReceived);
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m_urlFetcherThread->start();
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}
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void PlaybackManager::onDestroyed() {
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m_urlFetcherThread->cleanlyStop();
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}
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void PlaybackManager::setApiClient(ApiClient *apiClient) {
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if (!m_item.isNull()) {
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m_item->setApiClient(apiClient);
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}
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m_apiClient = apiClient;
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}
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void PlaybackManager::setItem(QSharedPointer<Model::Item> newItem) {
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if (m_mediaPlayer != nullptr) m_mediaPlayer->stop();
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bool shouldFetchStreamUrl = !newItem.isNull()
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&& ((m_streamUrl.isEmpty() || (!m_item.isNull()
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&& m_item->jellyfinId() != newItem->jellyfinId()))
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|| (m_nextStreamUrl.isEmpty() || (!m_nextItem.isNull()
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&& m_nextItem->jellyfinId() != newItem->jellyfinId())));
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this->m_item = newItem;
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if (newItem.isNull()) {
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m_displayItem->setData(QSharedPointer<Model::Item>::create());
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} else {
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m_displayItem->setData(newItem);
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}
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emit itemChanged(m_displayItem);
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if (m_apiClient == nullptr) {
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qWarning() << "apiClient is not set on this MediaSource instance! Aborting.";
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return;
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}
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// Deinitialize the streamUrl
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if (shouldFetchStreamUrl) {
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setStreamUrl(QUrl());
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m_urlFetcherThread->addItemToQueue(m_item);
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}
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}
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void PlaybackManager::setStreamUrl(const QUrl &streamUrl) {
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m_streamUrl = streamUrl.toString();
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// Inspired by PHP naming schemes
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Q_ASSERT_X(streamUrl.isValid() || streamUrl.isEmpty(), "setStreamUrl", "StreamURL Jellyfin returned is not valid");
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emit streamUrlChanged(m_streamUrl);
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}
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void PlaybackManager::setPlaybackState(QMediaPlayer::State newState) {
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if (newState != m_playbackState) {
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m_playbackState = newState;
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emit playbackStateChanged(newState);
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}
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}
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void PlaybackManager::mediaPlayerPositionChanged(qint64 position) {
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emit positionChanged(position);
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if (position == 0 && m_oldPosition != 0) {
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// Save the old position when stop gets called. The QMediaPlayer will try to set
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// position to 0 when stopped, but we don't want to report that to Jellyfin. We
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// want the old position.
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m_stopPosition = m_oldPosition;
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}
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m_oldPosition = position;
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}
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void PlaybackManager::mediaPlayerStateChanged(QMediaPlayer::State newState) {
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if (m_oldState == newState) return;
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if (m_oldState == QMediaPlayer::StoppedState) {
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// We're transitioning from stopped to either playing or paused.
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// Set up the recurring timer
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m_updateTimer.start();
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postPlaybackInfo(Started);
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} else if (newState == QMediaPlayer::StoppedState) {
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// We've stopped playing the media. Post a stop signal.
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m_updateTimer.stop();
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postPlaybackInfo(Stopped);
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setPlaybackState(QMediaPlayer::StoppedState);
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} else {
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postPlaybackInfo(Progress);
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}
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m_oldState = newState;
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}
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void PlaybackManager::mediaPlayerMediaStatusChanged(QMediaPlayer::MediaStatus newStatus) {
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emit mediaStatusChanged(newStatus);
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if (newStatus == QMediaPlayer::LoadedMedia) {
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m_mediaPlayer->play();
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setPlaybackState(playbackState());
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if (m_resumePlayback) {
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qDebug() << "Resuming playback by seeking to " << (m_resumePosition / MS_TICK_FACTOR);
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m_mediaPlayer->setPosition(m_resumePosition / MS_TICK_FACTOR);
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}
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} else if (newStatus == QMediaPlayer::EndOfMedia) {
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next();
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}
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}
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void PlaybackManager::mediaPlayerDurationChanged(qint64 newDuration) {
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emit durationChanged(newDuration);
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if (newDuration > 0 && !m_nextItem.isNull()) {
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m_preloadTimer.stop();
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m_preloadTimer.start(std::max(static_cast<int>(newDuration - PRELOAD_DURATION), 0));
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}
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}
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void PlaybackManager::mediaPlayerError(QMediaPlayer::Error error) {
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emit errorChanged(error);
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emit errorStringChanged(m_mediaPlayer->errorString());
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}
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void PlaybackManager::updatePlaybackInfo() {
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postPlaybackInfo(Progress);
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}
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void PlaybackManager::playItem(Item *item) {
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setItem(item->data());
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}
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void PlaybackManager::playItemInList(ItemModel *playlist, int index) {
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m_queue->clearList();
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m_queue->appendToList(*playlist);
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m_queue->play(index);
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m_queueIndex = index;
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emit queueIndexChanged(m_queueIndex);
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setItem(playlist->itemAt(index));
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}
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void PlaybackManager::next() {
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m_mediaPlayer->stop();
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m_mediaPlayer->setMedia(QMediaContent());
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swapMediaPlayer();
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if (m_nextItem.isNull()) {
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setItem(m_queue->nextItem());
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m_queue->next();
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m_nextItem.clear();
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} else {
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m_item = m_nextItem;
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setItem(m_nextItem);
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}
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m_mediaPlayer->play();
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}
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void PlaybackManager::previous() {
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m_mediaPlayer->stop();
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m_mediaPlayer->setPosition(0);
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m_nextStreamUrl = m_streamUrl;
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m_streamUrl = QString();
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m_nextItem = m_item;
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swapMediaPlayer();
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m_queue->previous();
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setItem(m_queue->currentItem());
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m_mediaPlayer->play();
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}
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void PlaybackManager::postPlaybackInfo(PlaybackInfoType type) {
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QJsonObject root;
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if (m_item == nullptr) {
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qWarning() << "Item is null. Not posting playback info";
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return;
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}
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root["ItemId"] = Support::toString(m_item->jellyfinId());
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root["SessionId"] = m_playSessionId;
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switch(type) {
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case Started: // FALLTHROUGH
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case Progress:
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root["IsPaused"] = m_mediaPlayer->state() != QMediaPlayer::PlayingState;
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root["IsMuted"] = false;
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root["AudioStreamIndex"] = m_audioIndex;
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root["SubtitleStreamIndex"] = m_subtitleIndex;
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root["PlayMethod"] = QVariant::fromValue(m_playMethod).toString();
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root["PositionTicks"] = m_mediaPlayer->position() * MS_TICK_FACTOR;
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break;
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case Stopped:
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root["PositionTicks"] = m_stopPosition * MS_TICK_FACTOR;
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break;
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}
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QString path;
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switch (type) {
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case Started:
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path = "/Sessions/Playing";
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break;
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case Progress:
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path = "/Sessions/Playing/Progress";
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break;
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case Stopped:
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path = "/Sessions/Playing/Stopped";
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break;
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}
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QNetworkReply *rep = m_apiClient->post(path, QJsonDocument(root));
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connect(rep, &QNetworkReply::finished, this, [rep](){
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rep->deleteLater();
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});
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m_apiClient->setDefaultErrorHandler(rep);
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}
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void PlaybackManager::swapMediaPlayer() {
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if (m_mediaPlayer != nullptr) {
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disconnect(m_mediaPlayer, &QMediaPlayer::stateChanged, this, &PlaybackManager::mediaPlayerStateChanged);
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disconnect(m_mediaPlayer, &QMediaPlayer::positionChanged, this, &PlaybackManager::mediaPlayerPositionChanged);
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disconnect(m_mediaPlayer, &QMediaPlayer::durationChanged, this, &PlaybackManager::mediaPlayerDurationChanged);
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disconnect(m_mediaPlayer, &QMediaPlayer::mediaStatusChanged, this, &PlaybackManager::mediaPlayerMediaStatusChanged);
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disconnect(m_mediaPlayer, &QMediaPlayer::videoAvailableChanged, this, &PlaybackManager::hasVideoChanged);
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// I do not like the complicated overload cast
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disconnect(m_mediaPlayer, SIGNAL(error(QMediaPlayer::Error)), this, SLOT(mediaPlayerError(QMediaPlayer::Error)));
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}
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if (m_mediaPlayer == m_mediaPlayer1) {
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m_mediaPlayer = m_mediaPlayer2;
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emit mediaPlayerChanged(m_mediaPlayer);
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} else {
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m_mediaPlayer = m_mediaPlayer1;
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emit mediaPlayerChanged(m_mediaPlayer);
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}
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connect(m_mediaPlayer, &QMediaPlayer::stateChanged, this, &PlaybackManager::mediaPlayerStateChanged);
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connect(m_mediaPlayer, &QMediaPlayer::positionChanged, this, &PlaybackManager::mediaPlayerPositionChanged);
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connect(m_mediaPlayer, &QMediaPlayer::durationChanged, this, &PlaybackManager::mediaPlayerDurationChanged);
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connect(m_mediaPlayer, &QMediaPlayer::mediaStatusChanged, this, &PlaybackManager::mediaPlayerMediaStatusChanged);
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connect(m_mediaPlayer, &QMediaPlayer::videoAvailableChanged, this, &PlaybackManager::hasVideoChanged);
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// I do not like the complicated overload cast
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connect(m_mediaPlayer, SIGNAL(error(QMediaPlayer::Error)), this, SLOT(mediaPlayerError(QMediaPlayer::Error)));
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}
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void PlaybackManager::componentComplete() {
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if (m_apiClient == nullptr) qWarning() << "No ApiClient set for PlaybackManager";
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m_qmlIsParsingComponent = false;
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}
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// ItemUrlFetcherThread
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ItemUrlFetcherThread::ItemUrlFetcherThread(PlaybackManager *manager) :
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QThread(manager),
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m_parent(manager),
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m_loader(new Jellyfin::Loader::HTTP::GetPostedPlaybackInfoLoader(manager->m_apiClient)) {
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connect(this, &ItemUrlFetcherThread::prepareLoaderRequested, this, &ItemUrlFetcherThread::onPrepareLoader);
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}
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void ItemUrlFetcherThread::addItemToQueue(QSharedPointer<Model::Item> item) {
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QMutexLocker locker(&m_queueModifyMutex);
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m_queue.enqueue(item);
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m_urlWaitCondition.wakeOne();
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}
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void ItemUrlFetcherThread::cleanlyStop() {
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m_keepRunning = false;
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m_urlWaitCondition.wakeAll();
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}
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void ItemUrlFetcherThread::onPrepareLoader() {
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m_loader->setApiClient(m_parent->m_apiClient);
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m_loader->prepareLoad();
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m_loaderPrepared = true;
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m_waitLoaderPrepared.wakeOne();
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}
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void ItemUrlFetcherThread::run() {
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while (m_keepRunning) {
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m_urlWaitConditionMutex.lock();
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while(m_queue.isEmpty() && m_keepRunning) {
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m_urlWaitCondition.wait(&m_urlWaitConditionMutex);
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}
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m_urlWaitConditionMutex.unlock();
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if (!m_keepRunning) break;
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Jellyfin::Loader::GetPostedPlaybackInfoParams params;
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QSharedPointer<Model::Item> item = m_queue.dequeue();
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m_queueModifyMutex.lock();
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params.setItemId(item->jellyfinId());
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m_queueModifyMutex.unlock();
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params.setUserId(m_parent->m_apiClient->userId());
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params.setEnableDirectPlay(true);
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params.setEnableDirectStream(true);
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params.setEnableTranscoding(true);
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m_loaderPrepared = false;
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m_loader->setParameters(params);
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// We cannot call m_loader->prepareLoad() from this thread, so we must
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// emit a signal and hope for the best
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emit prepareLoaderRequested(QPrivateSignal());
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m_waitLoaderPreparedMutex.lock();
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while (!m_loaderPrepared) {
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m_waitLoaderPrepared.wait(&m_waitLoaderPreparedMutex);
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}
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m_waitLoaderPreparedMutex.unlock();
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DTO::PlaybackInfoResponse response;
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try {
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std::optional<DTO::PlaybackInfoResponse> responseOpt = m_loader->load();
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if (responseOpt.has_value()) {
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response = responseOpt.value();
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} else {
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qWarning() << "Cannot retrieve URL of " << params.itemId();
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continue;
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}
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} catch (QException &e) {
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qWarning() << "Cannot retrieve URL of " << params.itemId() << ": " << e.what();
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continue;
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}
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//TODO: move the item URL fetching logic out of this function, into MediaSourceInfo?
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QList<DTO::MediaSourceInfo> mediaSources = response.mediaSources();
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QUrl resultingUrl;
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QString playSession = response.playSessionId();
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PlayMethod playMethod = PlayMethod::EnumNotSet;
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for (int i = 0; i < mediaSources.size(); i++) {
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const DTO::MediaSourceInfo &source = mediaSources.at(i);
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if (source.supportsDirectPlay() && QFile::exists(source.path())) {
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resultingUrl = QUrl::fromLocalFile(source.path());
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playMethod = PlayMethod::DirectPlay;
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} else if (source.supportsDirectStream()) {
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QString mediaType = item->mediaType();
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QUrlQuery query;
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query.addQueryItem("mediaSourceId", source.jellyfinId());
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query.addQueryItem("deviceId", m_parent->m_apiClient->deviceId());
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query.addQueryItem("api_key", m_parent->m_apiClient->token());
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query.addQueryItem("Static", "True");
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resultingUrl = QUrl(this->m_parent->m_apiClient->baseUrl() + "/" + mediaType + "/" + params.itemId()
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+ "/stream." + source.container() + "?" + query.toString(QUrl::EncodeReserved));
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playMethod = PlayMethod::DirectStream;
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} else if (source.supportsTranscoding()) {
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resultingUrl = QUrl(m_parent->m_apiClient->baseUrl() + source.transcodingUrl());
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playMethod = PlayMethod::Transcode;
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} else {
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qDebug() << "No suitable sources for item " << item->jellyfinId();
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}
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if (!resultingUrl.isEmpty()) break;
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}
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if (resultingUrl.isEmpty()) {
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qWarning() << "Could not find suitable media source for item " << params.itemId();
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emit itemUrlFetchError(item->jellyfinId(), tr("Cannot fetch stream URL"));
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} else {
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emit itemUrlFetched(item->jellyfinId(), resultingUrl, playSession, playMethod);
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}
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}
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}
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void PlaybackManager::onItemExtraDataReceived(const QString &itemId, const QUrl &url,
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const QString &playSession, PlayMethod playMethod) {
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Q_UNUSED(url)
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Q_UNUSED(playSession)
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if (!m_item.isNull() && m_item->jellyfinId() == itemId) {
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// We want to play the item probably right now
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m_playSessionId = playSession;
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m_playMethod = playMethod;
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setStreamUrl(url);
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emit playMethodChanged(m_playMethod);
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m_mediaPlayer->setMedia(QMediaContent(url));
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m_mediaPlayer->play();
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} else if (!m_nextItem.isNull() && m_nextItem->jellyfinId() == itemId){
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QMediaPlayer *otherMediaPlayer = m_mediaPlayer == m_mediaPlayer1 ? m_mediaPlayer2 : m_mediaPlayer1;
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m_nextPlaySessionId = playSession;
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m_nextStreamUrl = url.toString();
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otherMediaPlayer->setMedia(QMediaContent(url));
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} else {
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qDebug() << "Late reply for " << itemId << " received, ignoring";
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}
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}
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/// Called when the fetcherThread encountered an error
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void PlaybackManager::onItemErrorReceived(const QString &itemId, const QString &errorString) {
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Q_UNUSED(itemId)
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Q_UNUSED(errorString)
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}
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} // NS ViewModel
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} // NS Jellyfin
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