public bool Overlaps(long lStart, long lEnd, KeyFrame testFrame)
{
KeyFrame.enumFrameTimeType iTimeType = KeyFrame.enumFrameTimeType.StartTime;
foreach (KeyFrame frame in base.List)
{
if (frame != testFrame && frame != _CurrentFrame && frame.Overlaps(lStart, lEnd, ref iTimeType))
{
return(true);
}
}
return(false);
}
public KeyFrame Add(KeyFrame keyFrame, bool bSuspendRedraw)
{
if ((keyFrame.StartMillisecond > _Ruler.EndMillisecond) || (keyFrame.EndMillisecond > _Ruler.EndMillisecond))
{
throw new System.Exception("You can not add a keyframe with a start/end time greater than the end time of the ruler.");
}
if (keyFrame.KeyFrameType == KeyFrame.enumKeyFrameType.Snapshot)
{
//First lets verify that there is not already a single frame at this time slice.
foreach (KeyFrame frame in _arySingleFrames)
{
if (frame.StartMillisecond == keyFrame.StartMillisecond)
{
return(null);
}
}
//Now lets make sure that it does not overlap with any of the video frames.
KeyFrame.enumFrameTimeType iTimeType = KeyFrame.enumFrameTimeType.StartTime;
foreach (KeyFrame frame in _aryMulitFrames)
{
if (frame.Overlaps(keyFrame, ref iTimeType))
{
return(null);
}
}
_arySingleFrames.Add(keyFrame);
}
else if (keyFrame.KeyFrameType == KeyFrame.enumKeyFrameType.CurrentFrame)
{
if (_CurrentFrame != null)
{
throw new System.Exception("There is alread a current frame defined.");
}
_CurrentFrame = keyFrame;
}
else
{
//First lets verify that there is not already a range frame overlapping this time slice.
KeyFrame.enumFrameTimeType iTimeType = KeyFrame.enumFrameTimeType.StartTime;
foreach (KeyFrame frame in _aryMulitFrames)
{
if (frame.Overlaps(keyFrame, ref iTimeType))
{
//If it overlaps because of the start time then chunk it. If it overlaps because of the end time
//then lets see if we can come up with an end time that will work.
if (iTimeType == KeyFrame.enumFrameTimeType.StartTime)
{
return(null);
}
else
{
keyFrame.EndMillisecond = frame.StartMillisecond - 1;
}
}
}
//Now lets verify that there is not a single frame overlapping this video range.
foreach (KeyFrame frame in _arySingleFrames)
{
if (keyFrame.Overlaps(frame, ref iTimeType))
{
//Lets find whether the start or end point is closest and then then
//add the frame so it does not overlap.
if (Math.Abs(frame.StartMillisecond - keyFrame.StartMillisecond) < Math.Abs(frame.StartMillisecond - keyFrame.EndMillisecond))
{
//Start millisecond is closer to the single.
keyFrame.StartMillisecond = frame.StartMillisecond + 1;
}
else
{
//End millisecond is closer to the single.
keyFrame.EndMillisecond = frame.StartMillisecond - 1;
}
}
}
_aryMulitFrames.Add(keyFrame);
}
base.List.Add(keyFrame as object);
if (!bSuspendRedraw)
{
_Ruler.RedrawBitmap();
}
return(keyFrame);
}
