private void LoadVideoFrames()
{
double startTime = 0;
double endTime = 0;
int videoFrameCount = 0;
startTime = VideoStartTime;
endTime = VideoEndTime;
videoFrameCount = VideoFrameCount;
if(startTime == endTime)
videoFrameCount = 1;
if(endTime < startTime)
{
m_frames.Clear();
return;
}
if(m_lastStartTime == startTime && m_lastEndTime == endTime && videoFrameCount == m_lastFrameCount)
return;
m_lastStartTime = startTime;
m_lastEndTime = endTime;
m_lastFrameCount = videoFrameCount;
m_cancelLoadFrames = true;
double timeIncrement = (endTime - startTime)/videoFrameCount;
var times = new List<TimeSpan>();
double sec = startTime;
for(int i = 0; i < videoFrameCount; i++)
{
times.Add(TimeSpan.FromSeconds(sec));
sec += timeIncrement;
}
m_mediaDetector.Dispatcher.BeginInvoke((Action) delegate
{
m_cancelLoadFrames = false;
Dispatcher.Invoke((Action) (() => m_frames.Clear()));
for(int i = 0; i < times.Count; i++)
{
if(m_cancelLoadFrames)
return;
var frame = new VideoFrame(m_mediaDetector.GetImage(times[i]),
times[i]);
Dispatcher.Invoke((Action) (() => m_frames.Add(frame)));
}
var videoframe = new VideoFrame(m_mediaDetector.GetImage(TimeSpan.FromSeconds(endTime)),
TimeSpan.FromSeconds(endTime));
Dispatcher.Invoke((Action) (() => m_frames.Add(videoframe)));
m_cancelLoadFrames = false;
});
}
private void LoadVideoFrames()
{
double startTime = 0;
double endTime = 0;
int videoFrameCount = 0;
startTime = VideoStartTime;
endTime = VideoEndTime;
videoFrameCount = VideoFrameCount;
if (startTime == endTime)
{
videoFrameCount = 1;
}
if (endTime < startTime)
{
m_frames.Clear();
return;
}
if (m_lastStartTime == startTime && m_lastEndTime == endTime && videoFrameCount == m_lastFrameCount)
{
return;
}
m_lastStartTime = startTime;
m_lastEndTime = endTime;
m_lastFrameCount = videoFrameCount;
m_cancelLoadFrames = true;
double timeIncrement = (endTime - startTime) / videoFrameCount;
var times = new List <TimeSpan>();
double sec = startTime;
for (int i = 0; i < videoFrameCount; i++)
{
times.Add(TimeSpan.FromSeconds(sec));
sec += timeIncrement;
}
m_mediaDetector.Dispatcher.BeginInvoke((Action) delegate
{
m_cancelLoadFrames = false;
Dispatcher.Invoke((Action)(() => m_frames.Clear()));
for (int i = 0; i < times.Count; i++)
{
if (m_cancelLoadFrames)
{
return;
}
var frame = new VideoFrame(m_mediaDetector.GetImage(times[i]),
times[i]);
Dispatcher.Invoke((Action)(() => m_frames.Add(frame)));
}
var videoframe = new VideoFrame(m_mediaDetector.GetImage(TimeSpan.FromSeconds(endTime)),
TimeSpan.FromSeconds(endTime));
Dispatcher.Invoke((Action)(() => m_frames.Add(videoframe)));
m_cancelLoadFrames = false;
});
}
