git.sur5r.net Git - minitube/blob - src/video.cpp

   1 #include "video.h"
   2 #include "networkaccess.h"
   3 #include <QtNetwork>
   4 #include "videodefinition.h"
   5
   6 namespace The {
   7     NetworkAccess* http();
   8 }
   9
  10 Video::Video() : m_duration(0),
  11 m_viewCount(-1),
  12 definitionCode(0),
  13 elIndex(0),
  14 loadingStreamUrl(false)
  15 { }
  16
  17 Video* Video::clone() {
  18     Video* cloneVideo = new Video();
  19     cloneVideo->m_title = m_title;
  20     cloneVideo->m_description = m_description;
  21     cloneVideo->m_author = m_author;
  22     cloneVideo->m_webpage = m_webpage;
  23     cloneVideo->m_streamUrl = m_streamUrl;
  24     cloneVideo->m_thumbnail = m_thumbnail;
  25     cloneVideo->m_thumbnailUrls = m_thumbnailUrls;
  26     cloneVideo->m_duration = m_duration;
  27     cloneVideo->m_published = m_published;
  28     cloneVideo->m_viewCount = m_viewCount;
  29     cloneVideo->videoId = videoId;
  30     cloneVideo->videoToken = videoToken;
  31     cloneVideo->definitionCode = definitionCode;
  32     return cloneVideo;
  33 }
  34
  35 void Video::preloadThumbnail() {
  36     if (m_thumbnailUrls.isEmpty()) return;
  37     QObject *reply = The::http()->get(m_thumbnailUrls.first());
  38     connect(reply, SIGNAL(data(QByteArray)), SLOT(setThumbnail(QByteArray)));
  39 }
  40
  41 void Video::setThumbnail(QByteArray bytes) {
  42     m_thumbnail = QImage::fromData(bytes);
  43     emit gotThumbnail();
  44 }
  45
  46 const QImage Video::thumbnail() const {
  47     return m_thumbnail;
  48 }
  49
  50 void Video::loadStreamUrl() {
  51     if (loadingStreamUrl) {
  52         qDebug() << "Already loading stream URL for" << this->title();
  53         return;
  54     }
  55     loadingStreamUrl = true;
  56
  57     // https://develop.participatoryculture.org/trac/democracy/browser/trunk/tv/portable/flashscraper.py
  58
  59     // Get Video ID
  60     // youtube-dl line 428
  61     // QRegExp re("^((?:http://)?(?:\\w+\\.)?youtube\\.com/(?:(?:v/)|(?:(?:watch(?:\\.php)?)?\\?(?:.+&)?v=)))?([0-9A-Za-z_-]+)(?(1).+)?$");
  62     QRegExp re("^http://www\\.youtube\\.com/watch\\?v=([0-9A-Za-z_-]+).*");
  63     bool match = re.exactMatch(m_webpage.toString());
  64     if (!match || re.numCaptures() < 1) {
  65         emit errorStreamUrl(QString("Cannot get video id for %1").arg(m_webpage.toString()));
  66         loadingStreamUrl = false;
  67         return;
  68     }
  69     videoId = re.cap(1);
  70
  71     getVideoInfo();
  72
  73 }
  74
  75 void  Video::getVideoInfo() {
  76     static const QStringList elTypes = QStringList() << "&el=embedded" << "&el=vevo" << "&el=detailpage" << "";
  77
  78     if (elIndex > elTypes.size() - 1) {
  79         loadingStreamUrl = false;
  80         emit errorStreamUrl("Cannot get video info");
  81         /*
  82         // Don't panic! We have a plan B.
  83         // get the youtube video webpage
  84         qDebug() << "Scraping" << webpage().toString();
  85         QObject *reply = The::http()->get(webpage().toString());
  86         connect(reply, SIGNAL(data(QByteArray)), SLOT(scrapeWebPage(QByteArray)));
  87         connect(reply, SIGNAL(error(QNetworkReply*)), SLOT(errorVideoInfo(QNetworkReply*)));
  88         // see you in scrapWebPage(QByteArray)
  89         */
  90         return;
  91     }
  92
  93     // Get Video Token
  94     QUrl videoInfoUrl = QUrl(QString(
  95             "http://www.youtube.com/get_video_info?video_id=%1%2&ps=default&eurl=&gl=US&hl=en"
  96             ).arg(videoId, elTypes.at(elIndex)));
  97
  98     QObject *reply = The::http()->get(videoInfoUrl);
  99     connect(reply, SIGNAL(data(QByteArray)), SLOT(gotVideoInfo(QByteArray)));
 100     connect(reply, SIGNAL(error(QNetworkReply*)), SLOT(errorVideoInfo(QNetworkReply*)));
 101
 102     // see you in gotVideoInfo...
 103
 104 }
 105
 106 void  Video::gotVideoInfo(QByteArray data) {
 107     QString videoInfo = QString::fromUtf8(data);
 108
 109     // qDebug() << "videoInfo" << videoInfo;
 110
 111     // get video token
 112     QRegExp re = QRegExp("^.*&token=([^&]+).*$");
 113     bool match = re.exactMatch(videoInfo);
 114     // handle regexp failure
 115     if (!match || re.numCaptures() < 1) {
 116         // Don't panic! We're gonna try another magic "el" param
 117         elIndex++;
 118         getVideoInfo();
 119         return;
 120     }
 121     QString videoToken = re.cap(1);
 122     while (videoToken.contains('%'))
 123         videoToken = QByteArray::fromPercentEncoding(videoToken.toAscii());
 124     // qDebug() << "videoToken" << videoToken;
 125     this->videoToken = videoToken;
 126
 127     // get fmt_url_map
 128     re = QRegExp("^.*&fmt_url_map=([^&]+).*$");
 129     match = re.exactMatch(videoInfo);
 130     // handle regexp failure
 131     if (!match || re.numCaptures() < 1) {
 132         // Don't panic! We're gonna try another magic "el" param
 133         elIndex++;
 134         getVideoInfo();
 135         return;
 136     }
 137
 138     QString fmtUrlMap = re.cap(1);
 139     fmtUrlMap = QByteArray::fromPercentEncoding(fmtUrlMap.toUtf8());
 140
 141     QSettings settings;
 142     QString definitionName = settings.value("definition").toString();
 143     int definitionCode = VideoDefinition::getDefinitionCode(definitionName);
 144
 145     // qDebug() << "fmtUrlMap" << fmtUrlMap;
 146     QStringList formatUrls = fmtUrlMap.split(",", QString::SkipEmptyParts);
 147     QHash<int, QString> urlMap;
 148     foreach(QString formatUrl, formatUrls) {
 149         int separator = formatUrl.indexOf("|");
 150         if (separator == -1) continue;
 151         int format = formatUrl.left(separator).toInt();
 152         QString url = formatUrl.mid(separator + 1);
 153
 154         if (format == definitionCode) {
 155             qDebug() << "Found format" << definitionCode;
 156             QUrl videoUrl = QUrl::fromEncoded(url.toUtf8(), QUrl::StrictMode);
 157             m_streamUrl = videoUrl;
 158             this->definitionCode = definitionCode;
 159             emit gotStreamUrl(videoUrl);
 160             loadingStreamUrl = false;
 161             return;
 162         }
 163
 164         urlMap.insert(format, url);
 165     }
 166
 167     QList<int> definitionCodes = VideoDefinition::getDefinitionCodes();
 168     int currentIndex = definitionCodes.indexOf(definitionCode);
 169     int previousIndex = 0;
 170     while (currentIndex >= 0) {
 171         previousIndex = currentIndex - 1;
 172         if (previousIndex < 0) previousIndex = 0;
 173         int definitionCode = definitionCodes.at(previousIndex);
 174         if (urlMap.contains(definitionCode)) {
 175             qDebug() << "Found format" << definitionCode;
 176             QString url = urlMap.value(definitionCode);
 177             QUrl videoUrl = QUrl::fromEncoded(url.toUtf8(), QUrl::StrictMode);
 178             m_streamUrl = videoUrl;
 179             this->definitionCode = definitionCode;
 180             emit gotStreamUrl(videoUrl);
 181             loadingStreamUrl = false;
 182             return;
 183         }
 184         currentIndex--;
 185     }
 186
 187     emit errorStreamUrl(tr("Cannot get video stream for %1").arg(m_webpage.toString()));
 188
 189 }
 190
 191 void Video::foundVideoUrl(QString videoToken, int definitionCode) {
 192     // qDebug() << "foundVideoUrl" << videoToken << definitionCode;
 193
 194     QUrl videoUrl = QUrl(QString(
 195             "http://www.youtube.com/get_video?video_id=%1&t=%2&eurl=&el=&ps=&asv=&fmt=%3"
 196             ).arg(videoId, videoToken, QString::number(definitionCode)));
 197
 198     m_streamUrl = videoUrl;
 199     loadingStreamUrl = false;
 200     emit gotStreamUrl(videoUrl);
 201 }
 202
 203 void Video::errorVideoInfo(QNetworkReply *reply) {
 204     loadingStreamUrl = false;
 205     emit errorStreamUrl(tr("Network error: %1 for %2").arg(reply->errorString(), reply->url().toString()));
 206 }
 207
 208 void Video::scrapeWebPage(QByteArray data) {
 209
 210     QString videoHTML = QString::fromUtf8(data);
 211     QRegExp re(".*, \"t\": \"([^\"]+)\".*");
 212     bool match = re.exactMatch(videoHTML);
 213
 214     // on regexp failure, stop and report error
 215     if (!match || re.numCaptures() < 1) {
 216         emit errorStreamUrl("Error parsing video page");
 217         loadingStreamUrl = false;
 218         return;
 219     }
 220
 221     QString videoToken = re.cap(1);
 222     // FIXME proper decode
 223     videoToken = videoToken.replace("%3D", "=");
 224
 225     // we'll need this in gotHeadHeaders()
 226     this->videoToken = videoToken;
 227
 228     // qDebug() << "token" << videoToken;
 229
 230     QSettings settings;
 231     QString definitionName = settings.value("definition").toString();
 232     int definitionCode = VideoDefinition::getDefinitionCode(definitionName);
 233     if (definitionCode == 18) {
 234         // This is assumed always available
 235         foundVideoUrl(videoToken, 18);
 236     } else {
 237         findVideoUrl(definitionCode);
 238     }
 239
 240 }
 241
 242 void Video::gotHeadHeaders(QNetworkReply* reply) {
 243     int statusCode = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
 244     // qDebug() << "gotHeaders" << statusCode;
 245     if (statusCode == 200) {
 246         foundVideoUrl(videoToken, definitionCode);
 247     } else {
 248
 249         // try next (lower quality) definition
 250         /*
 251         QStringList definitionNames = VideoDefinition::getDefinitionNames();
 252         int currentIndex = definitionNames.indexOf(currentDefinition);
 253         int previousIndex = 0;
 254         if (currentIndex > 0) {
 255             previousIndex = currentIndex - 1;
 256         }
 257         if (previousIndex > 0) {
 258             QString nextDefinitionName = definitionNames.at(previousIndex);
 259             findVideoUrl(nextDefinitionName);
 260         } else {
 261             foundVideoUrl(videoToken, 18);
 262         }*/
 263
 264
 265         QList<int> definitionCodes = VideoDefinition::getDefinitionCodes();
 266         int currentIndex = definitionCodes.indexOf(definitionCode);
 267         int previousIndex = 0;
 268         if (currentIndex > 0) {
 269             previousIndex = currentIndex - 1;
 270             int definitionCode = definitionCodes.at(previousIndex);
 271             if (definitionCode == 18) {
 272                 // This is assumed always available
 273                 foundVideoUrl(videoToken, 18);
 274             } else {
 275                 findVideoUrl(definitionCode);
 276             }
 277
 278         } else {
 279             foundVideoUrl(videoToken, 18);
 280         }
 281
 282     }
 283 }
 284
 285 void Video::findVideoUrl(int definitionCode) {
 286     this->definitionCode = definitionCode;
 287
 288     QUrl videoUrl = QUrl(QString(
 289             "http://www.youtube.com/get_video?video_id=%1&t=%2&eurl=&el=&ps=&asv=&fmt=%3"
 290             ).arg(videoId, videoToken, QString::number(definitionCode)));
 291
 292     QObject *reply = The::http()->head(videoUrl);
 293     connect(reply, SIGNAL(finished(QNetworkReply*)), SLOT(gotHeadHeaders(QNetworkReply*)));
 294     // connect(reply, SIGNAL(error(QNetworkReply*)), SLOT(errorVideoInfo(QNetworkReply*)));
 295
 296     // see you in gotHeadHeaders()
 297
 298 }