/// <summary>
/// add Source to video group
/// </summary>
private void AddSource(IAMTimelineTrack myTrack, string SourceFile, long StartTime, long EndTime)
{
int hr;
IAMTimelineObj pSource1Obj;
// create the timeline source object
hr = m_pTimeline.CreateEmptyNode(out pSource1Obj, TimelineMajorType.Source);
DESError.ThrowExceptionForHR(hr);
try
{
// set up source length
hr = pSource1Obj.SetStartStop(StartTime, EndTime);
DESError.ThrowExceptionForHR(hr);
IAMTimelineSrc pSource1Src = (IAMTimelineSrc)pSource1Obj;
// Set the file name
hr = pSource1Src.SetMediaName(SourceFile);
DESError.ThrowExceptionForHR(hr);
// Set the start/end
hr = pSource1Src.SetMediaLength(EndTime - StartTime);
DESError.ThrowExceptionForHR(hr);
hr = pSource1Src.SetStretchMode(0);
// Set the times, get back the times adjusted to fit the frame rate
hr = pSource1Src.FixMediaTimes(ref StartTime, ref EndTime);
DESError.ThrowExceptionForHR(hr);
// Connect the track to the source
hr = myTrack.SrcAdd(pSource1Obj);
DESError.ThrowExceptionForHR(hr);
}
finally
{
Marshal.ReleaseComObject(pSource1Obj);
}
}
private void TestFixMedia()
{
int hr;
long start, stop;
start = 1243;
stop = 10000000000;
hr = m_pSource1Src.SetMediaName("foo.avi");
DESError.ThrowExceptionForHR(hr);
hr = ((IAMTimelineObj)m_pSource1Src).SetStartStop(0, 1234563053945);
DESError.ThrowExceptionForHR(hr);
// Connect the track to the source
hr = m_VideoTrack.SrcAdd((IAMTimelineObj)m_pSource1Src);
DESError.ThrowExceptionForHR(hr);
hr = m_pSource1Src.FixMediaTimes(ref start, ref stop);
DESError.ThrowExceptionForHR(hr);
Debug.Assert(stop != 10000000000, "FixMediaTimes");
}
/// <summary>
/// Add a file to the group
/// </summary>
/// <param name="sName">File name+path to add</param>
/// <param name="lStart">Start point in source file in UNITS</param>
/// <param name="lEnd">End point in source file in UNITS or -1 to add entire file</param>
public void Add(string sName, long lStart, long lEnd)
{
int hr;
long lLength;
// Create a mediafile object to hold the file
MediaFile mf = new MediaFile(sName);
// Add it to the list of files
m_Files.Add(mf);
// If the endpoint is -1, find the real file length
if (lEnd < 0)
{
lEnd = mf.Length;
}
lLength = lEnd - lStart;
// create the timeline source object
IAMTimelineObj pSource1Obj;
hr = m_pTimeline.CreateEmptyNode(out pSource1Obj, TimelineMajorType.Source);
DESError.ThrowExceptionForHR(hr);
// Create track
IAMTimelineObj pTrack1Obj;
hr = m_pTimeline.CreateEmptyNode(out pTrack1Obj, TimelineMajorType.Track);
DESError.ThrowExceptionForHR(hr);
try
{
// Set start and stop time of the file in the target timeline
hr = pSource1Obj.SetStartStop(m_Length, lLength + m_Length);
DESError.ThrowExceptionForHR(hr);
IAMTimelineSrc pSource1Src = (IAMTimelineSrc)pSource1Obj;
// Set the file name
hr = pSource1Src.SetMediaName(mf.FileName);
DESError.ThrowExceptionForHR(hr);
// Set the start/end
hr = pSource1Src.SetMediaTimes(lStart, lEnd);
DESError.ThrowExceptionForHR(hr);
// tell the composition about the track
IAMTimelineComp pRootComp = (IAMTimelineComp)m_pGroup;
hr = pRootComp.VTrackInsBefore(pTrack1Obj, -1);
DESError.ThrowExceptionForHR(hr);
IAMTimelineTrack pTrack = (IAMTimelineTrack)pTrack1Obj;
// Connect the track to the source
hr = pTrack.SrcAdd(pSource1Obj);
DESError.ThrowExceptionForHR(hr);
// Set the times, get back the times adjusted to fit the frame rate
hr = pSource1Src.FixMediaTimes(ref lStart, ref lEnd);
DESError.ThrowExceptionForHR(hr);
// Calculate the last frame number for the file
double d1 = (lEnd - lStart);
double d2 = (DESCombine.UNITS / m_FPS);
double d3 = d1 / d2;
int d4 = (int)Math.Round(d3);
// Update the MediaFile (used to see when we've walked past
// the end of a file)
mf.LengthInFrames = d4;
}
finally
{
Marshal.ReleaseComObject(pSource1Obj);
Marshal.ReleaseComObject(pTrack1Obj);
}
m_Length += lLength;
}