public StreamMgr(String cname, String name, DateTime start, DateTime end, bool compressed, PayloadType payload)
{
streamProfileData = null;
cancel = false;
this.compressed = compressed;
lastFSP = -1;
currentFSPGuid = Guid.Empty;
this.cname = cname;
this.name = name;
this.payload = payload;
//Look behind to make sure we get a key frame before the requested start time.
//Otherwise we may have several seconds of missing video frames at the beginning of the segment.
//PRI2: make the lookbehind customizable.
//PRI2: audio surely doesn't need as much lookbehind? If any?
startTime = start.Ticks;
lookBehindStart = startTime;
if (!compressed)
{
lookBehindStart -= Constants.TicksPerSec * 10;
}
//Get the relevant stream_id's and create DBStreamPlayers for each.
streams = DatabaseUtility.GetStreams(payload, cname, name, startTime, end.Ticks);
streamPlayers = new DBStreamPlayer[streams.Length];
for (int i = 0; i < streams.Length; i++)
{
streamPlayers[i] = new DBStreamPlayer(streams[i], lookBehindStart, end.Ticks, payload);
}
}
/// <summary>
/// Thread proc to examine presentation data to find referenced slide decks.
/// </summary>
private void AnalyzeThread()
{
decks.Clear();
this.unnamedDecks = new Hashtable();
BufferChunk frame;
long timestamp;
progressTracker = new ProgressTracker(1);
progressTracker.CustomMessage = "Initializing";
progressTracker.CurrentValue = 0;
progressTracker.EndValue = 100; //dummy value to start with.
progressTracker.OnShowProgress += new ProgressTracker.showProgressCallback(OnShowProgress);
progressTracker.Start();
//Note: there would be multiple streams here if the presenter left the venue and rejoined during the segment.
// This is in the context of a single segment, so we can assume one cname, and no overlapping streams.
int[] streams = DatabaseUtility.GetStreams(payload, cname, null, dtstart.Ticks, dtend.Ticks);
if (streams == null)
{
progressTracker.Stop();
progressTracker = null;
this.OnAnalyzeCompleted();
return;
}
DBStreamPlayer[] streamPlayers = new DBStreamPlayer[streams.Length];
double totalDuration = 0;
for (int i = 0; i < streams.Length; i++)
{
streamPlayers[i] = new DBStreamPlayer(streams[i], dtstart.Ticks, dtend.Ticks, this.payload);
totalDuration += ((TimeSpan)(streamPlayers[i].End - streamPlayers[i].Start)).TotalSeconds;
}
progressTracker.EndValue = (int)totalDuration;
progressTracker.CustomMessage = "Analyzing";
int framecount = 0;
for (int i = 0; i < streamPlayers.Length; i++)
{
if (stopAnalyze)
{
break;
}
while ((streamPlayers[i].GetNextFrame(out frame, out timestamp)))
{
if (stopAnalyze)
{
break;
}
ProcessFrame(frame);
progressTracker.CurrentValue = (int)(((TimeSpan)(new DateTime(timestamp) - streamPlayers[0].Start)).TotalSeconds);
framecount++;
}
}
if ((!stopAnalyze) && (this.OnAnalyzeCompleted != null))
{
mergeUnnamedDecks();
progressTracker.Stop();
progressTracker = null;
this.OnAnalyzeCompleted();
}
}
private void lookupThreadProc()
{
working.Reset();
if (!DatabaseUtility.CheckConnectivity())
{
done = true;
sqlConnectError = true;
working.Set();
return;
}
Conference[] confs = DatabaseUtility.GetConferences();
this.conferenceData = new ArrayList();
participantCount = DatabaseUtility.CountParticipants();
if (participantCount < 1)
{
done = true;
sqlConnectError = false;
working.Set();
return;
}
currentParticipant = 0;
foreach (Conference c in confs)
{
if (stopNow)
{
break;
}
ConferenceWrapper cw = new ConferenceWrapper();
cw.Conference = c;
cw.Description = "Conference: " + c.Start.ToString() + " - " + c.Description;
cw.Participants = new ArrayList();
Participant[] participants = DatabaseUtility.GetParticipants(c.ConferenceID);
foreach (Participant part in participants)
{
if (stopNow)
{
break;
}
ParticipantWrapper pw = new ParticipantWrapper();
pw.Description = "Participant: " + part.CName;
pw.Participant = part;
pw.StreamGrouper = new StreamGrouper(part.CName);
//Here is the slow part:
Stream[] streams = DatabaseUtility.GetStreams(part.ParticipantID);
currentParticipant++;
if (streams == null)
{
continue;
}
foreach (Stream str in streams)
{
pw.StreamGrouper.AddStream(str);
}
//Only show the participants that sent some supported data
if (pw.StreamGrouper.GroupCount > 0)
{
cw.Participants.Add(pw);
}
}
conferenceData.Add(cw);
}
done = true;
working.Set();
}
public SlideStreamMgr(ArchiveTranscoderJob job, ArchiveTranscoderJobSegment segment,
LogMgr logMgr, double fps, int width, int height)
{
this.job = job;
this.segment = segment;
this.logMgr = logMgr;
if (width > 0 && height > 0)
{
this.outputWidth = width;
this.outputHeight = height;
}
this.ticksBetweenFrames = (long)((double)Constants.TicksPerSec / fps);
uncompressedMT = getUncompressedMT(this.outputWidth, this.outputHeight, fps);
cancel = false;
initialized = false;
pptInstalled = Utility.CheckPptIsInstalled();
if ((!DateTime.TryParse(segment.StartTime, out start)) ||
(!DateTime.TryParse(segment.EndTime, out end)))
{
throw(new System.Exception("Failed to parse start/end time"));
}
this.nextFrameTime = start.Ticks;
format = Utility.StringToPresenterWireFormatType(segment.PresentationDescriptor.PresentationFormat);
payload = Utility.formatToPayload(format);
cname = segment.PresentationDescriptor.PresentationCname;
slideImageMgr = new SlideImageMgr(format, this.outputWidth, this.outputHeight);
//Get the start time for the entire conference and use that to get streams.
long confStart = DatabaseUtility.GetConferenceStartTime(payload, cname, start.Ticks, end.Ticks);
if (confStart <= 0)
{
logMgr.WriteLine("Warning: No conference exists in the database that matches this presentation: " + cname +
" with PresentationFormat " + format.ToString());
logMgr.ErrorLevel = 7;
confStart = start.Ticks;
}
//Get the relevant stream_id's and create DBStreamPlayers for each.
streamIDs = DatabaseUtility.GetStreams(payload, segment.PresentationDescriptor.PresentationCname, null, confStart, end.Ticks);
DateTime sdt = new DateTime(confStart);
Debug.WriteLine("***Conference start: " + sdt.ToString() + " end: " + end.ToString());
if ((streamIDs == null) || (streamIDs.Length == 0))
{
Debug.WriteLine("No presentation data found.");
logMgr.WriteLine("Warning: No presentation data was found for the given time range for " +
cname + " with PresentationFormat " + format.ToString());
logMgr.ErrorLevel = 7;
streamPlayers = null;
return;
}
streamPlayers = new DBStreamPlayer[streamIDs.Length];
for (int i = 0; i < streamIDs.Length; i++)
{
streamPlayers[i] = new DBStreamPlayer(streamIDs[i], confStart, end.Ticks, payload);
}
lookBehindDuration = 0;
if (streamPlayers[0].Start < start)
{
lookBehindDuration = ((TimeSpan)(start - streamPlayers[0].Start)).TotalSeconds;
}
}
