public YoutubeMediaPacket(YoutubeMediaPacketType videoPacketType, YoutubeRequestURL requestURL, byte[] packetData)
{
FilePath = _writePacketDataToDisk(packetData);
VideoPacketType = videoPacketType;
YoutubeRequestURL = requestURL;
_populateFromYoutubeRequestURL(requestURL);
VideoId = requestURL.RequestPath.QueryString.HasValue(YoutubeChatterClientHandler.VIDEO_ID_FIELD_NAME) ?
requestURL.RequestPath.QueryString.GetValue(YoutubeChatterClientHandler.VIDEO_ID_FIELD_NAME)
: null;
}
public YoutubeMediaPacket(YoutubeMediaPacketType videoPacketType, YoutubeRequestURL requestURL, string packetFilePath)
{
FilePath = packetFilePath;
VideoPacketType = videoPacketType;
YoutubeRequestURL = requestURL;
VideoId = requestURL.RequestPath.QueryString.HasValue(YoutubeChatterClientHandler.VIDEO_ID_FIELD_NAME) ?
requestURL.RequestPath.QueryString.GetValue(YoutubeChatterClientHandler.VIDEO_ID_FIELD_NAME)
: null;
_populateFromYoutubeRequestURL(requestURL);
}
public static bool IsValidYoutubeRequestURL(YoutubeRequestURL requestURL)
{
return
// range is required for track packet index
(requestURL.RequestPath.QueryString.HasValue("range")
// clen is required to know the actual size of the video
&& requestURL.RequestPath.QueryString.HasValue("clen")
// stream id is requried for distinguish each video (in case two or more videos are buffering at the same time)
&& requestURL.RequestPath.QueryString.HasValue("id")
// itag is required to parse media info (quality , bitrate , containers...)
&& requestURL.RequestPath.QueryString.HasValue("itag"));
}
public override string ToString()
{
return
("Video FingerPrint : " + this.VideoFingerPrint + "\n" +
"Video Range : " + this.Range.ToString() + "\n" +
"Video Packet Length : " + this.PacketLength + "\n" +
"Video Packet Type : " + this.VideoPacketType + "\n" +
"Video Quality Info : " + this.PacketMediaFileDataInfo + "\n" +
"Video Length : " + this.OverAllLength + "\n" +
"Video File Path : " + this.FilePath +
"Video Requested URL : " + YoutubeRequestURL.ToRequestableURL());
}
private void _populateFromYoutubeRequestURL(YoutubeRequestURL youtubePlaybackRequestURL)
{
// make sure the url contains the required fields (packet range , total video lenght, stream id , itag)
// if not we can't intercept this video
if (IsValidYoutubeRequestURL(youtubePlaybackRequestURL))
{
Range = new Range(youtubePlaybackRequestURL.RequestPath.QueryString.GetValue("range"));
OverAllLength = double.Parse(youtubePlaybackRequestURL.RequestPath.QueryString.GetValue("clen"));
PacketLength = Range.Length;
VideoFingerPrint = youtubePlaybackRequestURL.RequestPath.QueryString.GetValue("id");
PacketMediaFileDataInfo = ItagHelper.FindByItag(int.Parse(youtubePlaybackRequestURL.RequestPath.QueryString.GetValue("itag")));
}
else
{
throw new InsuffesientYoutubeURLParams();
}
}
