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);
}
}
public static void VerifyStream(int streamId, DateTime startTime, DateTime endTime)
{
DBStreamPlayer streamPlayer = new DBStreamPlayer(streamId, startTime.Ticks, endTime.Ticks, PayloadType.dynamicVideo);
Console.WriteLine("VerifyStream: streamID=" + streamId.ToString() +
"; Start=" + startTime.ToString() + "; End=" + endTime.ToString());
verifyStream(streamPlayer);
}
/// <summary>
/// Read from a stream and attempt to find various issues.
/// </summary>
/// <param name="streamId"></param>
/// <param name="durationSeconds"></param>
public static void VerifyStream(int streamId, int durationSeconds)
{
DBStreamPlayer streamPlayer = new DBStreamPlayer(streamId, (long)durationSeconds * (long)Constants.TicksPerSec, PayloadType.dynamicVideo);
Console.WriteLine("VerifyStream: streamID=" + streamId.ToString() +
"; requested duration Ticks=" + ((long)durationSeconds * (long)Constants.TicksPerSec).ToString());
verifyStream(streamPlayer);
}
private static void verifyStream(DBStreamPlayer streamPlayer)
{
BufferChunk frame;
long streamTime;
BufferChunk sample;
bool keyframe;
long refTime = 0;
long lastStreamTime = 0;
long timediff = 0;
DateTime dt;
while (streamPlayer.GetNextFrame(out frame, out streamTime))
{
try {
sample = ProfileUtility.FrameToSample(frame, out keyframe);
}
catch (Exception ex) {
dt = new DateTime(streamTime);
Console.WriteLine("FrameToSample failed at: " + dt.ToString() + "; Sampletime=" + streamTime.ToString());
Console.WriteLine(ex.ToString());
continue;
}
if (refTime == 0)
{
refTime = streamTime;
}
timediff = streamTime - lastStreamTime;
// Look for large intervals
//if (timediff > 500000L) {
// dt = new DateTime(streamTime);
// Console.WriteLine("Sample: " + dt.ToString() + "; Sampletime=" + streamTime.ToString() + "; length=" + sample.Length.ToString() + ";interval=" + timediff.ToString());
//}
// Look for large samples
//if (sample.Length > 90000) {
// dt = new DateTime(streamTime);
// Console.WriteLine("Sample: " + dt.ToString() + "; Sampletime=" + streamTime.ToString() + "; length=" + sample.Length.ToString() + ";interval=" + timediff.ToString());
//}
// Look for small samples
//if (sample.Length < 300) {
// dt = new DateTime(streamTime);
// Console.WriteLine("Sample: " + dt.ToString() + "; Sampletime=" + streamTime.ToString() + "; length=" + sample.Length.ToString() + ";interval=" + timediff.ToString());
//}
lastStreamTime = streamTime;
}
DateTime dt1 = new DateTime(refTime);
DateTime dt2 = new DateTime(lastStreamTime);
Console.WriteLine("Started at " + dt1.ToString() + "; Ended at " + dt2.ToString() + " (" + lastStreamTime.ToString() + " ticks)" +
" after duration ticks =" + (lastStreamTime - refTime).ToString());
}
private static void verifyStream(DBStreamPlayer streamPlayer)
{
BufferChunk frame;
long streamTime;
BufferChunk sample;
bool keyframe;
long refTime = 0;
long lastStreamTime = 0;
while (streamPlayer.GetNextFrame(out frame, out streamTime))
{
try {
sample = ProfileUtility.FrameToSample(frame, out keyframe);
}
catch (Exception ex) {
DateTime dt = new DateTime(streamTime);
Console.WriteLine("FrameToSample failed at: " + dt.ToString() + "; Sampletime=" + streamTime.ToString());
Console.WriteLine(ex.ToString());
continue;
}
if (refTime == 0)
{
refTime = streamTime;
}
//DateTime dt = new DateTime(streamTime);
//Console.WriteLine("Sample: " + dt.ToString() + "; Sampletime=" + streamTime.ToString() + "; length=" + sample.Length.ToString()); Console.WriteLine(ex.ToString());
lastStreamTime = streamTime;
}
DateTime dt1 = new DateTime(refTime);
DateTime dt2 = new DateTime(lastStreamTime);
Console.WriteLine("Started at " + dt1.ToString() + "; Ended at " + dt2.ToString() + " (" + lastStreamTime.ToString() + " ticks)" +
" after duration ticks =" + (lastStreamTime - refTime).ToString());
}
/// <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();
}
}
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;
}
}
