82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
/* This file is part of Clementine.
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Copyright 2012, David Sansome <me@davidsansome.com>
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Clementine 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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Clementine 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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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GOOGLEDRIVESTREAM_H
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#define GOOGLEDRIVESTREAM_H
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#include <QList>
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#include <QNetworkAccessManager>
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#include <QObject>
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#include <QSslError>
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#include <QUrl>
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#include <google/sparsetable>
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#include <taglib/tiostream.h>
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class CloudStream : public QObject, public TagLib::IOStream {
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Q_OBJECT
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public:
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CloudStream(const QUrl& url, const QString& filename, const long length,
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const QString& auth);
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// Taglib::IOStream
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virtual TagLib::FileName name() const;
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virtual TagLib::ByteVector readBlock(size_t length);
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virtual void writeBlock(const TagLib::ByteVector&);
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virtual void insert(const TagLib::ByteVector&, TagLib::offset_t, size_t);
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virtual void removeBlock(TagLib::offset_t, size_t);
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virtual bool readOnly() const;
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virtual bool isOpen() const;
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virtual void seek(TagLib::offset_t offset, TagLib::IOStream::Position p);
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virtual void clear();
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virtual TagLib::offset_t tell() const;
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virtual TagLib::offset_t length();
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virtual void truncate(TagLib::offset_t);
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google::sparsetable<char>::size_type cached_bytes() const {
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return cache_.num_nonempty();
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}
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int num_requests() const { return num_requests_; }
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// Use educated guess to request the bytes that TagLib will probably want.
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void Precache();
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private:
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bool CheckCache(int start, int end);
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void FillCache(int start, TagLib::ByteVector data);
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TagLib::ByteVector GetCached(int start, int end);
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private slots:
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void SSLErrors(const QList<QSslError>& errors);
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private:
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const QUrl url_;
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const QString filename_;
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const QByteArray encoded_filename_;
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const ulong length_;
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const QString auth_;
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int cursor_;
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std::unique_ptr<QNetworkAccessManager> network_;
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google::sparsetable<char> cache_;
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int num_requests_;
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};
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#endif // GOOGLEDRIVESTREAM_H
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