128 lines
3.8 KiB
C++
128 lines
3.8 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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#include "musicbrainzcoverprovider.h"
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#include <algorithm>
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#include <boost/bind.hpp>
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#include <QXmlStreamReader>
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#include "core/closure.h"
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#include "core/network.h"
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namespace {
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static const char* kReleaseSearchUrl =
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"http://musicbrainz.org/ws/2/release/";
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static const char* kAlbumCoverUrl =
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"http://coverartarchive.org/release/%1/front";
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} // namespace
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MusicbrainzCoverProvider::MusicbrainzCoverProvider(QObject* parent)
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: CoverProvider("MusicBrainz", parent),
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network_(new NetworkAccessManager(this)) {
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}
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bool MusicbrainzCoverProvider::StartSearch(
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const QString& artist, const QString& album, int id) {
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// Find release information.
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QUrl url(kReleaseSearchUrl);
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QString query = QString("release:\"%1\" AND artist:\"%2\"")
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.arg(album.trimmed().replace('"', "\\\""))
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.arg(artist.trimmed().replace('"', "\\\""));
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url.addQueryItem("query", query);
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url.addQueryItem("limit", "5");
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QNetworkRequest request(url);
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QNetworkReply* reply = network_->get(request);
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NewClosure(
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reply,
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SIGNAL(finished()),
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this,
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SLOT(ReleaseSearchFinished(QNetworkReply*, int)),
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reply,
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id);
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cover_names_[id] = QString("%1 - %2").arg(artist, album);
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return true;
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}
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void MusicbrainzCoverProvider::ReleaseSearchFinished(
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QNetworkReply* reply, int id) {
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reply->deleteLater();
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QList<QString> releases;
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QXmlStreamReader reader(reply);
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while (!reader.atEnd()) {
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QXmlStreamReader::TokenType type = reader.readNext();
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if (type == QXmlStreamReader::StartElement &&
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reader.name() == "release") {
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QStringRef release_id = reader.attributes().value("id");
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if (!release_id.isEmpty()) {
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releases.append(release_id.toString());
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}
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}
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}
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foreach (const QString& release_id, releases) {
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QUrl url(QString(kAlbumCoverUrl).arg(release_id));
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QNetworkReply* reply = network_->head(QNetworkRequest(url));
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image_checks_.insert(id, reply);
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NewClosure(
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reply,
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SIGNAL(finished()),
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this,
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SLOT(ImageCheckFinished(int)),
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id);
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}
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}
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void MusicbrainzCoverProvider::ImageCheckFinished(int id) {
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QList<QNetworkReply*> replies = image_checks_.values(id);
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int finished_count = std::count_if(
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replies.constBegin(), replies.constEnd(),
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boost::bind(&QNetworkReply::isFinished, _1));
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if (finished_count == replies.size()) {
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QString cover_name = cover_names_.take(id);
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QList<CoverSearchResult> results;
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foreach (QNetworkReply* reply, replies) {
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reply->deleteLater();
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if (reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() < 400) {
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CoverSearchResult result;
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result.description = cover_name;
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result.image_url = reply->url();
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results.append(result);
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}
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}
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image_checks_.remove(id);
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emit SearchFinished(id, results);
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}
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}
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void MusicbrainzCoverProvider::CancelSearch(int id) {
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QList<QNetworkReply*> replies = image_checks_.values(id);
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foreach (QNetworkReply* reply, replies) {
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reply->abort();
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reply->deleteLater();
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}
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image_checks_.remove(id);
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}
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