strawberry-audio-player-win.../src/covermanager/discogscoverprovider.h

91 lines
2.6 KiB
C++

/*
* Strawberry Music Player
* This file was part of Clementine.
* Copyright 2010, David Sansome <me@davidsansome.com>
* Copyright 2012, Martin Björklund <mbj4668@gmail.com>
* Copyright 2016, Jonas Kvinge <jonas@jkvinge.net>
*
* Strawberry 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.
*
* Strawberry 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 Strawberry. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef DISCOGSCOVERPROVIDER_H
#define DISCOGSCOVERPROVIDER_H
#include "config.h"
#include <QXmlStreamReader>
#include <QNetworkReply>
#include "coverprovider.h"
class QNetworkAccessManager;
// This struct represents a single search-for-cover request. It identifies and describes the request.
struct DiscogsCoverSearchContext {
enum State { State_Init, State_MastersRequested, State_ReleasesRequested };
// the unique request identifier
int id;
// the search query
QString artist;
QString album;
State state;
CoverSearchResults results;
};
Q_DECLARE_METATYPE(DiscogsCoverSearchContext)
class DiscogsCoverProvider : public CoverProvider {
Q_OBJECT
public:
explicit DiscogsCoverProvider(QObject *parent = nullptr);
static const char *kUrl;
static const char *kRequestTokenURL;
static const char *kAuthorizeURL;
static const char *kAccessTokenURL;
static const char *kAccessKey;
static const char *kSecretAccessKey;
static const char *kAccessKeyB64;
static const char *kSecretAccessKeyB64;
bool StartSearch(const QString &artist, const QString &album, int id);
void CancelSearch(int id);
private slots:
void QueryError(QNetworkReply::NetworkError error, QNetworkReply *reply, int id);
void HandleSearchReply(QNetworkReply* reply, int id);
private:
QNetworkAccessManager *network_;
QHash<int, DiscogsCoverSearchContext*> pending_requests_;
void SendSearchRequest(DiscogsCoverSearchContext *ctx);
void ReadItem(QXmlStreamReader *reader, CoverSearchResults *results);
void ReadLargeImage(QXmlStreamReader *reader, CoverSearchResults *results);
void QueryFinished(QNetworkReply *reply, int id);
void EndSearch(DiscogsCoverSearchContext *ctx);
};
#endif // DISCOGSCOVERPROVIDER_H