/// <summary>
/// Performs a seek operation to the specified position.
/// </summary>
/// <param name="position">The position.</param>
private void Seek(TimeSpan position)
{
SeekingDone.Wait();
var startTime = DateTime.UtcNow;
var resumeClock = Clock.IsRunning;
Clock.Pause();
SeekingDone.Reset();
PacketReadingCycle.Wait();
FrameDecodingCycle.Wait();
BlockRenderingCycle.Wait();
// Clear Blocks and frames, reset the render times
foreach (var t in Container.Components.MediaTypes)
{
Frames[t].Clear();
Blocks[t].Clear();
LastRenderTime[t] = TimeSpan.MinValue;
}
// Populate frame with after-seek operation
var frames = Container.Seek(position);
foreach (var frame in frames)
{
Frames[frame.MediaType].Push(frame);
}
// Resume the clock if it was running before the seek operation
OnPropertyChanged(nameof(Position));
if (resumeClock)
{
Clock.Play();
}
Container.Log(MediaLogMessageType.Debug,
$"SEEK D: Elapsed: {startTime.DebugElapsedUtc()}");
RequestedSeekPosition = null;
SeekingDone.Set();
}
public async Task CloseAsync()
{
Container?.Log(MediaLogMessageType.Debug, $"{nameof(CloseAsync)}: Entered");
Clock.Pause();
IsTaskCancellationPending = true;
// Wait for cycles to complete.
await Task.Run(() =>
{
while (!BlockRenderingCycle.Wait(1))
{
}
while (!FrameDecodingCycle.Wait(1))
{
}
while (!PacketReadingCycle.Wait(1))
{
}
});
BlockRenderingTask?.Join();
FrameDecodingTask?.Join();
PacketReadingTask?.Join();
BlockRenderingTask = null;
FrameDecodingTask = null;
PacketReadingTask = null;
foreach (var renderer in Renderers.Values)
{
renderer.Close();
}
Renderers.Clear();
// Reset the clock
Clock.Reset();
Container?.Log(MediaLogMessageType.Debug, $"{nameof(CloseAsync)}: Completed");
// Dispose the container
if (Container != null)
{
Container.Dispose();
Container = null;
}
// Dispose the Blocks for all components
foreach (var kvp in Blocks)
{
kvp.Value.Dispose();
}
Blocks.Clear();
// Dispose the Frames for all components
foreach (var kvp in Frames)
{
kvp.Value.Dispose();
}
Frames.Clear();
// Clear the render times
LastRenderTime.Clear();
// Update notification properties
UpdateMediaProperties();
MediaState = MediaState.Close;
}