/// <inheritdoc />
public override void Render(MediaBlock mediaBlock, TimeSpan clockPosition)
{
var block = BeginRenderingCycle(mediaBlock);
if (block == null)
{
return;
}
VideoDispatcher?.Invoke(() =>
{
try
{
// Prepare and write frame data
if (PrepareVideoFrameBuffer(block))
{
WriteVideoFrameBuffer(block, clockPosition);
}
}
catch (Exception ex)
{
this.LogError(Aspects.VideoRenderer, $"{nameof(VideoRenderer)}.{nameof(Render)} bitmap failed.", ex);
}
finally
{
FinishRenderingCycle(block, clockPosition);
}
}, DispatcherPriority.Normal);
}
/// <inheritdoc />
public void Render(MediaBlock mediaBlock, TimeSpan clockPosition)
{
if (mediaBlock is VideoBlock == false)
{
return;
}
var block = (VideoBlock)mediaBlock;
if (IsRenderingInProgress.Value)
{
if (MediaCore?.State.IsPlaying ?? false)
{
this.LogDebug(Aspects.VideoRenderer, $"{nameof(VideoRenderer)} frame skipped at {mediaBlock.StartTime}");
}
return;
}
// Flag the start of a rendering cycle
IsRenderingInProgress.Value = true;
// Send the packets to the CC renderer
MediaElement?.CaptionsView?.SendPackets(block, MediaCore);
if (!IsRenderTime)
{
return;
}
else
{
RenderStopwatch.Restart();
}
VideoDispatcher?.BeginInvoke(() =>
{
try
{
// Prepare and write frame data
if (PrepareVideoFrameBuffer(block))
{
WriteVideoFrameBuffer(block, clockPosition);
}
}
catch (Exception ex)
{
this.LogError(Aspects.VideoRenderer, $"{nameof(VideoRenderer)}.{nameof(Render)} bitmap failed.", ex);
}
finally
{
// Update the layout including pixel ratio and video rotation
ControlDispatcher?.InvokeAsync(() =>
UpdateLayout(block, clockPosition), DispatcherPriority.Render);
IsRenderingInProgress.Value = false;
}
}, DispatcherPriority.Send);
}
private void UpdateTargetImage(DispatcherPriority priority, bool syncrhonous)
{
var task = VideoDispatcher?.InvokeAsync(() => Graphics.Render(MediaElement.VideoView), priority);
if (syncrhonous)
{
task?.Wait();
}
}
