91 lines
3.1 KiB
C++
91 lines
3.1 KiB
C++
/* This file is part of Strawberry.
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Copyright 2018-2024, Jonas Kvinge <jonas@jkvinge.net>
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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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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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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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#ifndef TAGREADERBASE_H
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#define TAGREADERBASE_H
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#include "config.h"
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#include <string>
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#include <QByteArray>
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#include <QString>
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#include "tagreadermessages.pb.h"
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/*
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* This class holds all useful methods to read and write tags from/to files.
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* You should not use it directly in the main process but rather use a TagReaderWorker process (using TagReaderClient)
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*/
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class TagReaderBase {
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public:
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explicit TagReaderBase();
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~TagReaderBase() = default;
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class Result {
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public:
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enum class ErrorCode {
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Success,
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Unsupported,
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FilenameMissing,
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FileOpenError,
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FileParseError,
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FileSaveError,
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CustomError,
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};
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Result(const ErrorCode _error_code, const QString &_error = QString()) : error_code(_error_code), error(_error) {}
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ErrorCode error_code;
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QString error;
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bool success() const { return error_code == ErrorCode::Success; }
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};
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class Cover {
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public:
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explicit Cover(const QByteArray &_data = QByteArray(), const QString &_mime_type = QString()) : data(_data), mime_type(_mime_type) {}
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QByteArray data;
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QString mime_type;
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QString error;
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};
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static QString ErrorString(const Result &result);
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virtual bool IsMediaFile(const QString &filename) const = 0;
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virtual Result ReadFile(const QString &filename, spb::tagreader::SongMetadata *song) const = 0;
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virtual Result WriteFile(const QString &filename, const spb::tagreader::WriteFileRequest &request) const = 0;
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virtual Result LoadEmbeddedArt(const QString &filename, QByteArray &data) const = 0;
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virtual Result SaveEmbeddedArt(const QString &filename, const spb::tagreader::SaveEmbeddedArtRequest &request) const = 0;
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virtual Result SaveSongPlaycountToFile(const QString &filename, const uint playcount) const = 0;
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virtual Result SaveSongRatingToFile(const QString &filename, const float rating) const = 0;
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protected:
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static float ConvertPOPMRating(const int POPM_rating);
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static int ConvertToPOPMRating(const float rating);
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static Cover LoadCoverFromRequest(const QString &song_filename, const spb::tagreader::WriteFileRequest &request);
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static Cover LoadCoverFromRequest(const QString &song_filename, const spb::tagreader::SaveEmbeddedArtRequest &request);
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private:
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static Cover LoadCoverFromRequest(const QString &song_filename, const QString &cover_filename, QByteArray cover_data, QString cover_mime_type);
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Q_DISABLE_COPY(TagReaderBase)
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};
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#endif // TAGREADERBASE_H
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