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).+)?$");
  62     QRegExp re("^http://www\\.youtube\\.com/watch\\?v=([0-9A-Za-z_-]+).*");
  63     bool match = re.exactMatch(m_webpage.toString());
  64     if (!match || re.numCaptures() < 1) {
  65         emit errorStreamUrl(QString("Cannot get video id for %1").arg(m_webpage.toString()));
  66         loadingStreamUrl = false;
  67         return;
  68     }
  69     videoId = re.cap(1);
  70
  71     getVideoInfo();
  72
  73 }
  74
  75 void  Video::getVideoInfo() {
  76     static const QStringList elTypes = QStringList() << "&el=embedded" << "&el=vevo" << "&el=detailpage" << "";
  77
  78     if (elIndex > elTypes.size() - 1) {
  79         // Don't panic! We have a plan B.
  80         // get the youtube video webpage
  81         qDebug() << "Scraping" << webpage().toString();
  82         QObject *reply = The::http()->get(webpage().toString());
  83         connect(reply, SIGNAL(data(QByteArray)), SLOT(scrapeWebPage(QByteArray)));
  84         connect(reply, SIGNAL(error(QNetworkReply*)), SLOT(errorVideoInfo(QNetworkReply*)));
  85         // see you in scrapWebPage(QByteArray)
  86         return;
  87     }
  88
  89     // Get Video Token
  90     QUrl videoInfoUrl = QUrl(QString(
  91             "http://www.youtube.com/get_video_info?video_id=%1%2&ps=default&eurl=&gl=US&hl=en"
  92             ).arg(videoId, elTypes.at(elIndex)));
  93
  94     QObject *reply = The::http()->get(videoInfoUrl);
  95     connect(reply, SIGNAL(data(QByteArray)), SLOT(gotVideoInfo(QByteArray)));
  96     connect(reply, SIGNAL(error(QNetworkReply*)), SLOT(errorVideoInfo(QNetworkReply*)));
  97
  98     // see you in gotVideoInfo...
  99
 100 }
 101
 102 void  Video::gotVideoInfo(QByteArray data) {
 103     QString videoInfo = QString::fromUtf8(data);
 104
 105     // qDebug() << "videoInfo" << videoInfo;
 106
 107     // get video token
 108     QRegExp re = QRegExp("^.*&token=([^&]+).*$");
 109     bool match = re.exactMatch(videoInfo);
 110     // handle regexp failure
 111     if (!match || re.numCaptures() < 1) {
 112         // Don't panic! We're gonna try another magic "el" param
 113         elIndex++;
 114         getVideoInfo();
 115         return;
 116     }
 117     QString videoToken = re.cap(1);
 118     while (videoToken.contains('%'))
 119         videoToken = QByteArray::fromPercentEncoding(videoToken.toAscii());
 120     // qDebug() << "videoToken" << videoToken;
 121     this->videoToken = videoToken;
 122
 123     // get fmt_url_map
 124     re = QRegExp("^.*&fmt_url_map=([^&]+).*$");
 125     match = re.exactMatch(videoInfo);
 126     // handle regexp failure
 127     if (!match || re.numCaptures() < 1) {
 128         // Don't panic! We're gonna try another magic "el" param
 129         elIndex++;
 130         getVideoInfo();
 131         return;
 132     }
 133
 134     QString fmtUrlMap = re.cap(1);
 135     fmtUrlMap = QByteArray::fromPercentEncoding(fmtUrlMap.toUtf8());
 136
 137     QSettings settings;
 138     QString definitionName = settings.value("definition").toString();
 139     int definitionCode = VideoDefinition::getDefinitionCode(definitionName);
 140
 141     // qDebug() << "fmtUrlMap" << fmtUrlMap;
 142     QStringList formatUrls = fmtUrlMap.split(",", QString::SkipEmptyParts);
 143     QHash<int, QString> urlMap;
 144     foreach(QString formatUrl, formatUrls) {
 145         int separator = formatUrl.indexOf("|");
 146         if (separator == -1) continue;
 147         int format = formatUrl.left(separator).toInt();
 148         QString url = formatUrl.mid(separator + 1);
 149
 150         if (format == definitionCode) {
 151             QUrl videoUrl = QUrl::fromEncoded(url.toUtf8(), QUrl::StrictMode);
 152             m_streamUrl = videoUrl;
 153             emit gotStreamUrl(videoUrl);
 154             loadingStreamUrl = false;
 155             return;
 156         }
 157
 158         urlMap.insert(format, url);
 159     }
 160
 161     QList<int> definitionCodes = VideoDefinition::getDefinitionCodes();
 162     int currentIndex = definitionCodes.indexOf(definitionCode);
 163     int previousIndex = 0;
 164     while (currentIndex >= 0) {
 165         previousIndex = currentIndex - 1;
 166         int definitionCode = definitionCodes.at(previousIndex);
 167         if (urlMap.contains(definitionCode)) {
 168             qDebug() << "Found format" << definitionCode;
 169             QString url = urlMap.value(definitionCode);
 170             QUrl videoUrl = QUrl::fromEncoded(url.toUtf8(), QUrl::StrictMode);
 171             m_streamUrl = videoUrl;
 172             emit gotStreamUrl(videoUrl);
 173             loadingStreamUrl = false;
 174             return;
 175         }
 176         currentIndex--;
 177     }
 178
 179     emit errorStreamUrl(tr("Cannot get video stream for %1").arg(m_webpage.toString()));
 180
 181 }
 182
 183 void Video::foundVideoUrl(QString videoToken, int definitionCode) {
 184     // qDebug() << "foundVideoUrl" << videoToken << definitionCode;
 185
 186     QUrl videoUrl = QUrl(QString(
 187             "http://www.youtube.com/get_video?video_id=%1&t=%2&eurl=&el=&ps=&asv=&fmt=%3"
 188             ).arg(videoId, videoToken, QString::number(definitionCode)));
 189
 190     m_streamUrl = videoUrl;
 191     emit gotStreamUrl(videoUrl);
 192     loadingStreamUrl = false;
 193 }
 194
 195 void Video::errorVideoInfo(QNetworkReply *reply) {
 196     emit errorStreamUrl(tr("Network error: %1 for %2").arg(reply->errorString(), reply->url().toString()));
 197     loadingStreamUrl = false;
 198 }
 199
 200 void Video::scrapeWebPage(QByteArray data) {
 201
 202     QString videoHTML = QString::fromUtf8(data);
 203     QRegExp re(".*, \"t\": \"([^\"]+)\".*");
 204     bool match = re.exactMatch(videoHTML);
 205
 206     // on regexp failure, stop and report error
 207     if (!match || re.numCaptures() < 1) {
 208         emit errorStreamUrl("Error parsing video page");
 209         loadingStreamUrl = false;
 210         return;
 211     }
 212
 213     QString videoToken = re.cap(1);
 214     // FIXME proper decode
 215     videoToken = videoToken.replace("%3D", "=");
 216
 217     // we'll need this in gotHeadHeaders()
 218     this->videoToken = videoToken;
 219
 220     // qDebug() << "token" << videoToken;
 221
 222     QSettings settings;
 223     QString definitionName = settings.value("definition").toString();
 224     int definitionCode = VideoDefinition::getDefinitionCode(definitionName);
 225     if (definitionCode == 18) {
 226         // This is assumed always available
 227         foundVideoUrl(videoToken, 18);
 228     } else {
 229         findVideoUrl(definitionCode);
 230     }
 231
 232 }
 233
 234 void Video::gotHeadHeaders(QNetworkReply* reply) {
 235     int statusCode = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
 236     // qDebug() << "gotHeaders" << statusCode;
 237     if (statusCode == 200) {
 238         foundVideoUrl(videoToken, definitionCode);
 239     } else {
 240
 241         // try next (lower quality) definition
 242         /*
 243         QStringList definitionNames = VideoDefinition::getDefinitionNames();
 244         int currentIndex = definitionNames.indexOf(currentDefinition);
 245         int previousIndex = 0;
 246         if (currentIndex > 0) {
 247             previousIndex = currentIndex - 1;
 248         }
 249         if (previousIndex > 0) {
 250             QString nextDefinitionName = definitionNames.at(previousIndex);
 251             findVideoUrl(nextDefinitionName);
 252         } else {
 253             foundVideoUrl(videoToken, 18);
 254         }*/
 255
 256
 257         QList<int> definitionCodes = VideoDefinition::getDefinitionCodes();
 258         int currentIndex = definitionCodes.indexOf(definitionCode);
 259         int previousIndex = 0;
 260         if (currentIndex > 0) {
 261             previousIndex = currentIndex - 1;
 262             int definitionCode = definitionCodes.at(previousIndex);
 263             if (definitionCode == 18) {
 264                 // This is assumed always available
 265                 foundVideoUrl(videoToken, 18);
 266             } else {
 267                 findVideoUrl(definitionCode);
 268             }
 269
 270         } else {
 271             foundVideoUrl(videoToken, 18);
 272         }
 273
 274     }
 275 }
 276
 277 void Video::findVideoUrl(int definitionCode) {
 278     this->definitionCode = definitionCode;
 279
 280     QUrl videoUrl = QUrl(QString(
 281             "http://www.youtube.com/get_video?video_id=%1&t=%2&eurl=&el=&ps=&asv=&fmt=%3"
 282             ).arg(videoId, videoToken, QString::number(definitionCode)));
 283
 284     QObject *reply = The::http()->head(videoUrl);
 285     connect(reply, SIGNAL(finished(QNetworkReply*)), SLOT(gotHeadHeaders(QNetworkReply*)));
 286     // connect(reply, SIGNAL(error(QNetworkReply*)), SLOT(errorVideoInfo(QNetworkReply*)));
 287
 288     // see you in gotHeadHeaders()
 289
 290 }