Clementine-audio-player-Mac.../src/playlist/songloaderinserter.cpp

171 lines
5.5 KiB
C++
Raw Normal View History

/* This file is part of Clementine.
Copyright 2010, David Sansome <me@davidsansome.com>
Clementine is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Clementine is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Clementine. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QtConcurrentRun>
#include "playlist.h"
#include "songloaderinserter.h"
#include "core/logging.h"
#include "core/songloader.h"
#include "core/taskmanager.h"
SongLoaderInserter::SongLoaderInserter(TaskManager* task_manager,
LibraryBackendInterface* library,
const Player* player)
: task_manager_(task_manager),
destination_(nullptr),
row_(-1),
play_now_(true),
enqueue_(false),
async_load_id_(0),
async_progress_(0),
library_(library),
player_(player) {}
SongLoaderInserter::~SongLoaderInserter() {
qDeleteAll(pending_);
qDeleteAll(pending_async_);
}
void SongLoaderInserter::Load(Playlist* destination, int row, bool play_now,
bool enqueue, const QList<QUrl>& urls) {
destination_ = destination;
row_ = row;
play_now_ = play_now;
enqueue_ = enqueue;
connect(destination, SIGNAL(destroyed()), SLOT(DestinationDestroyed()));
connect(this, SIGNAL(EffectiveLoadFinished(const SongList&)), destination,
SLOT(UpdateItems(const SongList&)));
for (const QUrl& url : urls) {
SongLoader* loader = new SongLoader(library_, player_, this);
// we're connecting this before we're even sure if this is an async load
// to avoid race conditions (signal emission before we're listening to it)
connect(loader, SIGNAL(LoadFinished(bool)),
SLOT(PendingLoadFinished(bool)));
SongLoader::Result ret = loader->Load(url);
if (ret == SongLoader::WillLoadAsync) {
pending_.insert(loader);
continue;
}
if (ret == SongLoader::Success)
songs_ << loader->songs();
else
emit Error(tr("Error loading %1").arg(url.toString()));
delete loader;
}
if (pending_.isEmpty())
Finished();
else {
async_progress_ = 0;
async_load_id_ = task_manager_->StartTask(tr("Loading tracks"));
task_manager_->SetTaskProgress(async_load_id_, async_progress_,
pending_.count());
}
}
// Load audio CD tracks:
// First, we add tracks (without metadata) into the playlist
// In the meantine, MusicBrainz will be queried to get songs' metadata.
// AudioCDTagsLoaded will be called next, and playlist's items will be updated.
void SongLoaderInserter::LoadAudioCD(Playlist* destination, int row,
bool play_now, bool enqueue) {
destination_ = destination;
row_ = row;
play_now_ = play_now;
enqueue_ = enqueue;
SongLoader* loader = new SongLoader(library_, player_, this);
connect(loader, SIGNAL(LoadFinished(bool)), SLOT(AudioCDTagsLoaded(bool)));
qLog(Info) << "Loading audio CD...";
SongLoader::Result ret = loader->LoadAudioCD();
if (ret == SongLoader::Error) {
emit Error(tr("Error while loading audio CD"));
delete loader;
}
songs_ = loader->songs();
PartiallyFinished();
}
void SongLoaderInserter::DestinationDestroyed() { destination_ = nullptr; }
void SongLoaderInserter::AudioCDTagsLoaded(bool success) {
SongLoader* loader = qobject_cast<SongLoader*>(sender());
if (!loader || !destination_) return;
if (success)
destination_->UpdateItems(loader->songs());
else
qLog(Error) << "Error while getting audio CD metadata from MusicBrainz";
deleteLater();
}
void SongLoaderInserter::PendingLoadFinished(bool success) {
SongLoader* loader = qobject_cast<SongLoader*>(sender());
if (!loader || !pending_.contains(loader)) return;
pending_.remove(loader);
pending_async_.insert(loader);
if (success)
songs_ << loader->songs();
else
emit Error(tr("Error loading %1").arg(loader->url().toString()));
task_manager_->SetTaskProgress(async_load_id_, ++async_progress_);
if (pending_.isEmpty()) {
task_manager_->SetTaskFinished(async_load_id_);
async_progress_ = 0;
async_load_id_ = task_manager_->StartTask(tr("Loading tracks info"));
task_manager_->SetTaskProgress(async_load_id_, async_progress_,
pending_async_.count());
PartiallyFinished();
QtConcurrent::run(this, &SongLoaderInserter::EffectiveLoad);
}
}
void SongLoaderInserter::PartiallyFinished() {
// Insert songs (that haven't been completelly loaded) to allow user to see
// and play them while not loaded completely
if (destination_) {
destination_->InsertSongsOrLibraryItems(songs_, row_, play_now_, enqueue_);
}
}
void SongLoaderInserter::EffectiveLoad() {
for (SongLoader* loader : pending_async_) {
loader->EffectiveSongsLoad();
task_manager_->SetTaskProgress(async_load_id_, ++async_progress_);
emit EffectiveLoadFinished(loader->songs());
}
task_manager_->SetTaskFinished(async_load_id_);
deleteLater();
}
void SongLoaderInserter::Finished() {
if (destination_) {
destination_->InsertSongsOrLibraryItems(songs_, row_, play_now_, enqueue_);
}
deleteLater();
}