99 lines
3.0 KiB
C++
99 lines
3.0 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 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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#ifndef URLHANDLER_H
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#define URLHANDLER_H
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#include "config.h"
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#include <QtGlobal>
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#include <QObject>
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#include <QString>
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#include <QUrl>
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#include "song.h"
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class UrlHandler : public QObject {
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Q_OBJECT
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public:
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explicit UrlHandler(QObject *parent = nullptr);
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// The URL scheme that this handler handles.
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virtual QString scheme() const = 0;
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// Returned by StartLoading() and LoadNext(), indicates what the player should do when it wants to load a URL.
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struct LoadResult {
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enum class Type {
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// There wasn't a track available, and the player should move on to the next playlist item.
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NoMoreTracks,
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// There might be another track available but the handler needs to do some work (eg. fetching a remote playlist) to find out.
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// AsyncLoadComplete will be emitted later with the same media_url.
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WillLoadAsynchronously,
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// There was a track available. Its url is in stream_url.
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TrackAvailable,
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// There was a error
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Error,
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};
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explicit LoadResult(const QUrl &media_url = QUrl(), const Type type = Type::NoMoreTracks, const QUrl &stream_url = QUrl(), const Song::FileType filetype = Song::FileType::Stream, const int samplerate = -1, const int bit_depth = -1, const qint64 length_nanosec = -1, const QString &error = QString());
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explicit LoadResult(const QUrl &media_url, const Type type, const QString &error);
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// The url that the playlist item has in Url().
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// Might be something unplayable like lastfm://...
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QUrl media_url_;
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// Result type
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Type type_;
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// The actual URL to something that gstreamer can play.
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QUrl stream_url_;
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// The type of the stream
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Song::FileType filetype_;
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// Track sample rate
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int samplerate_;
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// Track bit depth
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int bit_depth_;
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// Track length
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qint64 length_nanosec_;
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// Error message, if any
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QString error_;
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};
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// Called by the Player when a song starts loading - gives the handler a chance to do something clever to get a playable track.
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virtual LoadResult StartLoading(const QUrl &url) { return LoadResult(url); }
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signals:
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void AsyncLoadComplete(const UrlHandler::LoadResult &result);
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};
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#endif // URLHANDLER_H
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