void element_PlaybackTrackChanged(object sender, TrackChangedEventArgs e)
{
SourceEventArgs args;
for (int i = 0; i < this.tracks.Count; i++)
{
if (this.tracks[i].Bitrate == e.NewTrack.Bitrate)
{
args = new SourceEventArgs(i);
SourceChanged(this, args);
break;
}
}
}
void media_SourceChanged(object sender, SourceEventArgs e)
{
SendEvent("switchingChangeComplete", "{\"newIndex\":" + e.NewIndex + "}");
}
void element_PlaybackTrackChanged(object sender, TrackChangedEventArgs e)
{
if (this.tracks != null)
{
SourceEventArgs args;
for (int i = 0; i < this.tracks.Count; i++)
{
if (this.tracks[i].Bitrate == e.NewTrack.Bitrate)
{
args = new SourceEventArgs(i);
SourceChanged(this, args);
break;
}
}
}
}
private void AddMarkers(IAsyncResult argAR)
{
try {
if (!Deployment.Current.Dispatcher.CheckAccess())
{
Deployment.Current.Dispatcher.BeginInvoke(() => AddMarkers(argAR));
}
foreach (SegmentInfo segmentInfo in this.element.ManifestInfo.Segments)
{
foreach (StreamInfo streamInfo in segmentInfo.SelectedStreams)
{
if (streamInfo.UniqueId == ((string)argAR.AsyncState))
{
foreach (TrackInfo trackInfo in streamInfo.SelectedTracks)
{
ChunkResult chunkResult = trackInfo.EndGetChunk(argAR);
if (chunkResult.Result == ChunkResult.ChunkResultState.Succeeded && currentTextTrack != null)
{
System.Text.Encoding enc = System.Text.Encoding.UTF8;
int length = (int)chunkResult.ChunkData.Length;
byte[] rawData = new byte[length];
chunkResult.ChunkData.Read(rawData, 0, length);
String text = enc.GetString(rawData, 0, rawData.Length);
XElement xElem = XElement.Parse(text);
XElement bodyElem = xElem.Elements().FirstOrDefault(e => e.Name.LocalName == "body");
//first received chunk - notify js
if (!textTrackLoaded)
{
XElement copyElement = new XElement(xElem);
XElement copyBodyElem = copyElement.Elements().FirstOrDefault(e => e.Name.LocalName == "body");
//we can't send the body elements, they are causing "Eval" exception
copyBodyElem.RemoveAll();
SourceEventArgs args = new SourceEventArgs(getCurrentTextIndex());
args.Text = copyElement.ToString();
TextTrackLoaded(this, args);
textTrackLoaded = true;
}
//Get the caption language
string langName = "";
currentTextTrack.Attributes.TryGetValue("Name", out langName);
//Fix for TTML where div contains begin and end values instead of paragraph node
int segId = 0;
//Get all div under the body node
IEnumerable<XElement> divElements =
from div in bodyElem.Descendants()
where div.Name.LocalName == "div"
select div;
//Fix alogorithem:
//1. Iterate over each div.
//2. Find each begin and end values.
//3. Aggregate over each child of a div, concat it text value.
//4. Create a new paragraph element with the div begin and end attributes.
//5. Clear all the attribute and elements of the original div and replace with new paragraph.
foreach (XElement divElem in divElements) {
XAttribute begin = divElem.Attributes().FirstOrDefault(e => e.Name.LocalName == "begin");
XAttribute end = divElem.Attributes().FirstOrDefault(e => e.Name.LocalName == "end");
if (begin != null)
{
IEnumerable<string> textSegs =
from seg in divElem.Descendants()
where seg.Name.LocalName == "p"
select (string)seg;
string str = textSegs.Aggregate((x, y) => x + "<br/>" + y);
XElement pElem = divElem.Elements().FirstOrDefault(e => e.Name.LocalName == "p");
XAttribute region = pElem.Attributes().FirstOrDefault(e => e.Name.LocalName == "region");
divElem.RemoveAll();
XAttribute idAttr = new XAttribute("id", "p" + segId);
XElement newP = new XElement("p", begin, end, region, idAttr);
newP.Value = str;
divElem.Add(newP);
segId++;
}
}
//Turn each caption line to a media marker
foreach (XElement el in bodyElem.Elements())
{
IEnumerable<XElement> pSegs =
from p in el.Descendants()
where p.Name.LocalName == "p"
select p;
foreach (XElement pSeg in pSegs)
{
TimelineMarker newMarker = new TimelineMarker();
//Create discrete marker points for each segment
pSeg.Add(new XAttribute("timestamp", chunkResult.Timestamp.TotalSeconds.ToString()));
newMarker.Text = pSeg.ToString();
newMarker.Type = langName;
XAttribute begin = pSeg.Attribute("begin");
if (begin.Value != null)
{
newMarker.Time = chunkResult.Timestamp + TimeSpan.Parse(begin.Value);
this.element.Markers.Add(newMarker);
}
}
}
}
}
}
}
}
}catch(Exception ex)
{
logger.info("Error occur while trying to add marker:" + ex.Message);
}
}
void media_TextTrackLoaded(object sender, SourceEventArgs e)
{
SendEvent("textTrackSelected", "{\"index\":" + e.NewIndex + ", \"ttml\":\"" + HttpUtility.HtmlEncode(Uri.EscapeUriString(e.Text)) + "\"}");
}
void media_SourceChanged(object sender, SourceEventArgs e)
{
SendEvent("switchingChangeComplete", "{\"newIndex\":" + e.NewIndex + "}");
}
