ialbumartprovider.h

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/**********************************************************************
 * LeechCraft - modular cross-platform feature rich internet client.
 * Copyright (C) 2006-2014  Georg Rudoy
 *
 * Boost Software License - Version 1.0 - August 17th, 2003
 *
 * Permission is hereby granted, free of charge, to any person or organization
 * obtaining a copy of the software and accompanying documentation covered by
 * this license (the "Software") to use, reproduce, display, distribute,
 * execute, and transmit the Software, and to prepare derivative works of the
 * Software, and to permit third-parties to whom the Software is furnished to
 * do so, all subject to the following:
 *
 * The copyright notices in the Software and this entire statement, including
 * the above license grant, this restriction and the following disclaimer,
 * must be included in all copies of the Software, in whole or in part, and
 * all derivative works of the Software, unless such copies or derivative
 * works are solely in the form of machine-executable object code generated by
 * a source language processor.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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 **********************************************************************/
 
#pragma once
 
#include <boost/functional/hash.hpp>
#include <QString>
#include <QList>
#include <QImage>
#include <QHash>
#include <QMetaType>
#include <util/sll/eitherfwd.h>
 
class QUrl;
 
template<typename>
class QFuture;
 
namespace Media
{
    struct AlbumInfo
    {
        QString Artist_;
 
        QString Album_;
    };
 
    inline bool operator== (const AlbumInfo& a1, const AlbumInfo& a2)
    {
        return a1.Artist_ == a2.Artist_ &&
            a1.Album_ == a2.Album_;
    }
 
    inline size_t qHash (const AlbumInfo& info)
    {
        size_t seed = 0;
        boost::hash_combine (seed, qHash (info.Album_));
        boost::hash_combine (seed, qHash (info.Artist_));
        return seed;
    }
 
    class Q_DECL_EXPORT IAlbumArtProvider
    {
    public:
        virtual ~IAlbumArtProvider () {}
 
        using Result_t = LC::Util::Either<QString, QList<QUrl>>;
 
        virtual QString GetAlbumArtProviderName () const = 0;
 
        virtual QFuture<Result_t> RequestAlbumArt (const AlbumInfo& album) const = 0;
    };
}
 
Q_DECLARE_METATYPE (Media::AlbumInfo)
Q_DECLARE_INTERFACE (Media::IAlbumArtProvider, "org.LeechCraft.Media.IAlbumArtProvider/1.0")