Clementine-audio-player-Mac.../ext/libclementine-tagreader/tagreader.h

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/* This file is part of Clementine.
Copyright 2013, 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/>.
*/
#ifndef TAGREADER_H
#define TAGREADER_H
#include <QByteArray>
#include <taglib/xiphcomment.h>
#include "config.h"
#include "tagreadermessages.pb.h"
class QNetworkAccessManager;
class QString;
class QTextCodec;
class QUrl;
namespace TagLib {
class FileRef;
class String;
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namespace ID3v2 {
class Tag;
class PopularimeterFrame;
}
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}
class FileRefFactory;
/**
* This class holds all useful methods to read and write tags from/to files.
* You should not use it directly in the main process but rather use a
* TagReaderWorker process (using TagReaderClient)
*/
class TagReader {
public:
TagReader();
void ReadFile(const QString& filename,
pb::tagreader::SongMetadata* song) const;
bool SaveFile(const QString& filename,
const pb::tagreader::SongMetadata& song) const;
// Returns false if something went wrong; returns true otherwise (might
// returns true if the file exists but nothing has been written inside because
// statistics tag format is not supported for this kind of file)
bool SaveSongStatisticsToFile(const QString& filename,
const pb::tagreader::SongMetadata& song) const;
bool SaveSongRatingToFile(const QString& filename,
const pb::tagreader::SongMetadata& song) const;
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bool IsMediaFile(const QString& filename) const;
QByteArray LoadEmbeddedArt(const QString& filename) const;
#ifdef HAVE_GOOGLE_DRIVE
bool ReadCloudFile(const QUrl& download_url, const QString& title, int size,
const QString& mime_type, const QString& access_token,
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pb::tagreader::SongMetadata* song) const;
#endif // HAVE_GOOGLE_DRIVE
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static void Decode(const TagLib::String& tag, const QTextCodec* codec,
std::string* output);
static void Decode(const QString& tag, const QTextCodec* codec,
std::string* output);
void ParseFMPSFrame(const QString& name, const QString& value,
pb::tagreader::SongMetadata* song) const;
void ParseOggTag(const TagLib::Ogg::FieldListMap& map,
const QTextCodec* codec, QString* disc, QString* compilation,
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pb::tagreader::SongMetadata* song) const;
void SetVorbisComments(TagLib::Ogg::XiphComment* vorbis_comments,
const pb::tagreader::SongMetadata& song) const;
void SetFMPSStatisticsVorbisComments(
TagLib::Ogg::XiphComment* vorbis_comments,
const pb::tagreader::SongMetadata& song) const;
void SetFMPSRatingVorbisComments(TagLib::Ogg::XiphComment* vorbis_comments,
const pb::tagreader::SongMetadata& song)
const;
pb::tagreader::SongMetadata_Type GuessFileType(TagLib::FileRef* fileref)
const;
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void SetUserTextFrame(const QString& description, const QString& value,
TagLib::ID3v2::Tag* tag) const;
void SetUserTextFrame(const std::string& description,
const std::string& value,
TagLib::ID3v2::Tag* tag) const;
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void SetTextFrame(const char* id, const QString& value,
TagLib::ID3v2::Tag* tag) const;
void SetTextFrame(const char* id, const std::string& value,
TagLib::ID3v2::Tag* tag) const;
private:
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static const char* kMP4_FMPS_Rating_ID;
static const char* kMP4_FMPS_Playcount_ID;
static const char* kMP4_FMPS_Score_ID;
// Returns a float in [0.0..1.0] corresponding to the rating range we use in
// Clementine
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static float ConvertPOPMRating(const int POPM_rating);
// Reciprocal
static int ConvertToPOPMRating(const float rating);
static TagLib::ID3v2::PopularimeterFrame* GetPOPMFrameFromTag(
TagLib::ID3v2::Tag* tag);
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FileRefFactory* factory_;
QNetworkAccessManager* network_;
const std::string kEmbeddedCover;
};
#endif // TAGREADER_H