public SmoothStreamChunk(StreamIndex parentStreamIndex, double fragmentIndex, int duration, int bitrate)
{
_parentIndex = parentStreamIndex;
_fragmentIndex = fragmentIndex;
_bitrate = bitrate;
_duration = duration;
}
public ConcurrentBag<StreamIndex> ParseManifest(Uri manifestUri)
{
Console.WriteLine("----------------------------------------------------------------------------------");
Console.WriteLine("----------------------------------------------------------------------------------");
Console.WriteLine("Start parsing manifest : {0}", manifestUri.ToString());
List<SmoothStreamChunk> chunkList = new List<SmoothStreamChunk>();
Stopwatch sw = new Stopwatch();
sw.Start();
string manifestXml = new WebClient().DownloadString(manifestUri);
sw.Stop();
ManifestDownloadTime = sw.Elapsed;
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(manifestXml);
var ssMediaNode = xmlDoc.ChildNodes.Cast<XmlNode>().Where(n => n.Name == "SmoothStreamingMedia").FirstOrDefault();
ConcurrentBag<StreamIndex> streams = new ConcurrentBag<StreamIndex>();
var streamIndexNodes = ssMediaNode.ChildNodes.Cast<XmlNode>().Where(n => n.Name == "StreamIndex").ToList();
foreach (var sIndexNode in streamIndexNodes)
{
StreamIndex si = new StreamIndex();
si.StreamType = sIndexNode.Attributes["Type"].InnerText;
si.Url = sIndexNode.Attributes["Url"].InnerText;
if (!si.Url.StartsWith("http"))
{
si.Url = new Uri(manifestUri, si.Url).ToString();
}
Console.WriteLine("----------------------------------------------------------------------------------");
Console.WriteLine("Start parsing stream {0} of type {1}", si.Url, si.StreamType);
var qualityLevelNodes = sIndexNode.ChildNodes.Cast<XmlNode>().Where(n => n.Name == "QualityLevel").ToList();
foreach (var qlNode in qualityLevelNodes)
{
int bitrate = Int32.Parse(qlNode.Attributes["Bitrate"].InnerText);
si.AddBitrate(bitrate);
Console.WriteLine("Found quality level {0}", bitrate);
}
Console.WriteLine("");
var chunkNodes = sIndexNode.ChildNodes.Cast<XmlNode>().Where(n => n.Name == "c").ToList();
double chunkDurationIndex = 0;
foreach (var cNode in chunkNodes)
{
int chunkDuration = Int32.Parse(cNode.Attributes["d"].InnerText);
if (chunkDurationIndex == 0)
{
foreach (var br in si.Bitrates)
{
si.AddChunk(0, chunkDuration, br);
}
}
if (cNode == chunkNodes.Last())
{
continue;
}
chunkDurationIndex += chunkDuration;
foreach (var br in si.Bitrates)
{
si.AddChunk(chunkDurationIndex, chunkDuration, br);
}
}
Console.WriteLine("There are {0} chunks to download the stream in all bitrates. Duration is {1}", si.Chunks.Count(), chunkDurationIndex);
streams.Add(si);
Console.WriteLine("----------------------------------------------------------------------------------");
}
return streams;
}