111 lines
2.9 KiB
C
111 lines
2.9 KiB
C
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/*
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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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*
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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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#ifndef ALBUMCOVERLOADER_H
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#define ALBUMCOVERLOADER_H
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#include "config.h"
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#include "albumcoverloaderoptions.h"
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#include "core/song.h"
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#include <QImage>
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#include <QMutex>
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#include <QObject>
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#include <QQueue>
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#include <QUrl>
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class NetworkAccessManager;
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class QNetworkReply;
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class AlbumCoverLoader : public QObject {
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Q_OBJECT
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public:
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explicit AlbumCoverLoader(QObject *parent = nullptr);
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void Stop() { stop_requested_ = true; }
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static QString ImageCacheDir();
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quint64 LoadImageAsync(const AlbumCoverLoaderOptions &options, const Song &song);
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virtual quint64 LoadImageAsync(const AlbumCoverLoaderOptions &options, const QString &art_automatic, const QString &art_manual, const QString &song_filename = QString(), const QImage &embedded_image = QImage());
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void CancelTask(quint64 id);
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void CancelTasks(const QSet<quint64> &ids);
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static QPixmap TryLoadPixmap(const QString &automatic, const QString &manual, const QString &filename = QString());
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static QImage ScaleAndPad(const AlbumCoverLoaderOptions &options, const QImage &image);
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signals:
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void ImageLoaded(quint64 id, const QImage &image);
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void ImageLoaded(quint64 id, const QImage &scaled, const QImage &original);
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protected slots:
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void ProcessTasks();
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void RemoteFetchFinished(QNetworkReply* reply);
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protected:
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enum State {
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State_TryingManual,
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State_TryingAuto,
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};
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struct Task {
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Task() : redirects(0) {}
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AlbumCoverLoaderOptions options;
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quint64 id;
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QString art_automatic;
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QString art_manual;
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QString song_filename;
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QImage embedded_image;
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State state;
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int redirects;
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};
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struct TryLoadResult {
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TryLoadResult(bool async, bool success, const QImage &i) : started_async(async), loaded_success(success), image(i) {}
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bool started_async;
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bool loaded_success;
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QImage image;
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};
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void ProcessTask(Task* task);
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void NextState(Task* task);
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TryLoadResult TryLoadImage(const Task &task);
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bool stop_requested_;
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QMutex mutex_;
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QQueue<Task> tasks_;
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QMap<QNetworkReply *, Task> remote_tasks_;
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quint64 next_id_;
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NetworkAccessManager *network_;
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static const int kMaxRedirects = 3;
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};
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#endif // ALBUMCOVERLOADER_H
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