public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
AppUIState state = (AppUIState)value;
return(state == AppUIState.VideoPlaying || state == AppUIState.VideoFastForwarding ||
state == AppUIState.StreamPlaying);
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
AppUIState state = (AppUIState)value;
return(state == AppUIState.VideoLoaded ||
state == AppUIState.VideoPaused || state == AppUIState.VideoPlaying);
}
private void ResetMediaState(AppUIState newState, VideoCapture newVideoSource = null, Mat newImage = null)
{
AppUIState oldState = viewModel.CurrentUIState;
viewModel.CurrentUIState = newState;
bool restartPlayback = viewModel.FrameTimer.IsEnabled && newVideoSource != null;
viewModel.FrameTimer.Stop();
viewModel.VideoSource?.Dispose();
viewModel.VideoSource = newVideoSource;
viewModel.LoadedImage?.Dispose();
viewModel.LoadedImage = newImage;
imgDisplay.Image?.Dispose();
imgDisplay.Image = newImage;
if (restartPlayback)
{
if (newState == AppUIState.StreamLoaded)
{
viewModel.CurrentUIState = AppUIState.StreamPlaying;
}
else if (oldState == AppUIState.VideoFastForwarding)
{
viewModel.CurrentUIState = AppUIState.VideoFastForwarding;
}
else
{
viewModel.CurrentUIState = AppUIState.VideoPlaying;
}
if (newState == AppUIState.StreamLoaded)
{
viewModel.FrameTimer.Interval = TimeSpan.FromMilliseconds(30.0);
}
else
{
viewModel.FrameTimer.Interval = TimeSpan.FromMilliseconds(((viewModel.CurrentUIState == AppUIState.VideoFastForwarding)
? 500.0 : 1000.0) / newVideoSource.GetCaptureProperty(CapProp.Fps));
}
viewModel.FrameTimer.Start();
}
}
