346 lines
9.8 KiB
C++
346 lines
9.8 KiB
C++
/*
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* Cantata
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*
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* Copyright (c) 2011 Craig Drummond <craig.p.drummond@gmail.com>
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*
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* ----
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*
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* This program 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 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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 GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "covers.h"
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#include "song.h"
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#include "mpdparseutils.h"
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#include "maiaXmlRpcClient.h"
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#include "networkaccessmanager.h"
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#include "network.h"
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#include <QtCore/QFile>
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#include <QtCore/QCryptographicHash>
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#include <QtNetwork/QNetworkReply>
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#include <QtGui/QImage>
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#ifdef ENABLE_KDE_SUPPORT
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#include <KDE/KStandardDirs>
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#include <KDE/KGlobal>
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K_GLOBAL_STATIC(Covers, instance)
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#endif
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static const QLatin1String constApiKey("11172d35eb8cc2fd33250a9e45a2d486");
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static const QLatin1String constCoverDir("covers/");
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static const QLatin1String constFileName("cover");
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static const QLatin1String constExtension(".jpg");
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static const QLatin1String constAltExtension(".png");
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static const QString typeFromRaw(const QByteArray &raw)
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{
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if (raw.size()>9 && /*raw[0]==0xFF && raw[1]==0xD8 && raw[2]==0xFF*/ raw[6]=='J' && raw[7]=='F' && raw[8]=='I' && raw[9]=='F') {
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return constExtension;
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} else if (raw.size()>4 && /*raw[0]==0x89 &&*/ raw[1]=='P' && raw[2]=='N' && raw[3]=='G') {
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return constAltExtension;
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}
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return QString();
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}
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static bool save(const QString &mimeType, const QString &extension, const QString &filePrefix, const QImage &img, const QByteArray &raw)
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{
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if (!mimeType.isEmpty()) {
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if (QFile::exists(filePrefix+mimeType)) {
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return true;
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}
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QFile f(filePrefix+mimeType);
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if (f.open(QIODevice::WriteOnly) && raw.size()==f.write(raw)) {
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return true;
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}
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}
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if (extension!=mimeType) {
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if (QFile::exists(filePrefix+extension)) {
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return true;
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}
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if (img.save(filePrefix+extension)) {
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return true;
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}
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}
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return false;
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}
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static QString encodeName(QString name)
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{
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name.replace("/", "_");
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return name;
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}
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static QString xdgConfig()
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{
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QString env = QString::fromLocal8Bit(qgetenv("XDG_CONFIG_HOME"));
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QString dir = (env.isEmpty() ? QDir::homePath() + "/.config/" : env);
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if (!dir.endsWith("/")) {
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dir=dir+'/';
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}
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return dir;
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}
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#ifndef ENABLE_KDE_SUPPORT
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static QString kdeHome()
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{
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static QString kdeHomePath;
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if (kdeHomePath.isEmpty())
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{
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kdeHomePath = QString::fromLocal8Bit(qgetenv("KDEHOME"));
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if (kdeHomePath.isEmpty())
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{
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QDir homeDir(QDir::homePath());
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QString kdeConfDir(QLatin1String("/.kde"));
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if (homeDir.exists(QLatin1String(".kde4")))
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kdeConfDir = QLatin1String("/.kde4");
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kdeHomePath = QDir::homePath() + kdeConfDir;
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}
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}
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return kdeHomePath;
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}
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#endif
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static QImage otherAppCover(const Covers::Job &job)
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{
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#ifdef ENABLE_KDE_SUPPORT
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QString kdeDir=KGlobal::dirs()->localkdedir();
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#else
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QString kdeDir=kdeHome();
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#endif
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QString fileName=kdeDir+"/share/apps/amarok/albumcovers/large/"+
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QCryptographicHash::hash(job.artist.toLower().toLocal8Bit()+job.album.toLower().toLocal8Bit(),
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QCryptographicHash::Md5).toHex();
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QImage img(fileName);
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if (img.isNull()) {
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fileName=xdgConfig()+"/Clementine/albumcovers/"+
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QCryptographicHash::hash(job.artist.toLower().toUtf8()+job.album.toLower().toUtf8(),
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QCryptographicHash::Sha1).toHex()+".jpg";
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img=QImage(fileName);
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}
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if (!img.isNull() && !job.dir.isEmpty()) {
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QFile f(fileName);
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if (f.open(QIODevice::ReadOnly)) {
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QByteArray raw=f.readAll();
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if (!raw.isEmpty()) {
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QString mimeType=typeFromRaw(raw);
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save(mimeType, mimeType.isEmpty() ? constExtension : mimeType, job.dir+constFileName, img, raw);
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}
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}
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}
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return img;
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}
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Covers * Covers::self()
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{
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#ifdef ENABLE_KDE_SUPPORT
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return instance;
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#else
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static Covers *instance=0;;
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if(!instance) {
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instance=new Covers;
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}
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return instance;
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#endif
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}
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Covers::Covers()
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: rpc(0)
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, manager(0)
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{
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}
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void Covers::get(const Song &song)
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{
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QString dirName;
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QStringList extensions;
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extensions << constAltExtension << constExtension;
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if (!mpdDir.isEmpty()) {
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dirName=song.file.endsWith("/") ? mpdDir+song.file : MPDParseUtils::getDir(mpdDir+song.file);
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foreach (const QString &ext, extensions) {
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if (QFile::exists(dirName+constFileName+ext)) {
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QImage img(dirName+constFileName+ext);
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if (!img.isNull()) {
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emit cover(song.albumArtist(), song.album, img);
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return;
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}
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}
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}
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}
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QString artist=encodeName(song.albumArtist());
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QString album=encodeName(song.album);
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// Check if cover is already cached
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QString dir(Network::cacheDir(constCoverDir+artist, false));
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foreach (const QString &ext, extensions) {
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if (QFile::exists(dir+album+ext)) {
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QImage img(dir+album+ext);
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if (!img.isNull()) {
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emit cover(artist, album, img);
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return;
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}
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}
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}
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if (jobs.end()!=findJob(song)) {
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return;
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}
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Job job(song.albumArtist(), song.album, dirName);
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// See if amarok, or clementine, has it...
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QImage img=otherAppCover(job);
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if (!img.isNull()) {
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emit cover(artist, album, img);
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return;
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}
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// Query lastfm...
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if (!rpc) {
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rpc = new MaiaXmlRpcClient(QUrl("http://ws.audioscrobbler.com/2.0/"));
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}
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if (!manager) {
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manager=new NetworkAccessManager(this);
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connect(manager, SIGNAL(finished(QNetworkReply *)), this, SLOT(jobFinished(QNetworkReply *)));
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}
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QMap<QString, QVariant> args;
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args["artist"] = song.albumArtist();
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args["album"] = song.album;
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args["api_key"] = constApiKey;
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QNetworkReply *reply=rpc->call("album.getInfo", QVariantList() << args,
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this, SLOT(albumInfo(QVariant &, QNetworkReply *)),
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this, SLOT(albumFailure(int, const QString &, QNetworkReply *)));
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jobs.insert(reply, job);
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}
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void Covers::albumInfo(QVariant &value, QNetworkReply *reply)
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{
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QHash<QNetworkReply *, Job>::Iterator it(jobs.find(reply));
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QHash<QNetworkReply *, Job>::Iterator end(jobs.end());
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if (it!=end) {
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QString xmldoc = value.toString();
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xmldoc.replace("\\\"", "\"");
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QXmlStreamReader doc(xmldoc);
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QString url;
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Job job=it.value();
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while (!doc.atEnd() && url.isEmpty()) {
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doc.readNext();
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if (url.isEmpty() && doc.isStartElement() && doc.name() == "image" && doc.attributes().value("size").toString() == "extralarge") {
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url = doc.readElementText();
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}
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}
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if (!url.isEmpty()) {
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QUrl u;
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u.setEncodedUrl(url.toLatin1());
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jobs.remove(it.key());
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jobs.insert(manager->get(QNetworkRequest(u)), job);
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} else {
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emit cover(job.artist, job.album, QImage());
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}
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}
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reply->deleteLater();
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}
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void Covers::albumFailure(int, const QString &, QNetworkReply *reply)
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{
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QHash<QNetworkReply *, Job>::Iterator it(jobs.find(reply));
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QHash<QNetworkReply *, Job>::Iterator end(jobs.end());
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if (it!=end) {
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Job job=it.value();
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emit cover(job.artist, job.album, otherAppCover(job));
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jobs.remove(it.key());
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}
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reply->deleteLater();
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}
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void Covers::jobFinished(QNetworkReply *reply)
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{
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QHash<QNetworkReply *, Job>::Iterator it(jobs.find(reply));
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QHash<QNetworkReply *, Job>::Iterator end(jobs.end());
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if (it!=end) {
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QByteArray data=QNetworkReply::NoError==reply->error() ? reply->readAll() : QByteArray();
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QImage img = data.isEmpty() ? QImage() : QImage::fromData(data);
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Job job=it.value();
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if (!img.isNull() && img.size().width()<32) {
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img = QImage();
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}
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if (!img.isNull()) {
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saveImg(job, img, data);
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}
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jobs.remove(it.key());
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if (img.isNull()) {
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emit cover(job.artist, job.album, otherAppCover(job));
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} else {
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emit cover(job.artist, job.album, img);
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}
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}
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reply->deleteLater();
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}
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void Covers::saveImg(const Job &job, const QImage &img, const QByteArray &raw)
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{
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QString mimeType=typeFromRaw(raw);
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QString extension=mimeType.isEmpty() ? constExtension : mimeType;
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// Try to save as cover.jpg in album dir...
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if (!job.dir.isEmpty() && save(mimeType, extension, job.dir+constFileName, img, raw)) {
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return;
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}
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// Could not save with album, save in cache dir...
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QString dir = Network::cacheDir(constCoverDir+encodeName(job.artist));
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if (!dir.isEmpty()) {
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save(mimeType, extension, dir+encodeName(job.album), img, raw);
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}
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}
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QHash<QNetworkReply *, Covers::Job>::Iterator Covers::findJob(const Song &song)
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{
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QHash<QNetworkReply *, Job>::Iterator it(jobs.begin());
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QHash<QNetworkReply *, Job>::Iterator end(jobs.end());
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for (; it!=end; ++it) {
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if ((*it).artist==song.albumArtist() && (*it).album==song.album) {
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return it;
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}
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}
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return end;
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}
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