/// <inheritdoc />
public void Render(MediaBlock mediaBlock, TimeSpan clockPosition)
{
// We don't need to render anything while we are seeking. Simply drop the blocks.
if (MediaCore.State.IsSeeking || HasFiredAudioDeviceStopped)
{
return;
}
var lockTaken = false;
Monitor.TryEnter(SyncLock, SyncLockTimeout, ref lockTaken);
if (lockTaken == false)
{
return;
}
try
{
if ((AudioDevice?.IsRunning ?? false) == false)
{
if (HasFiredAudioDeviceStopped)
{
return;
}
MediaElement.RaiseAudioDeviceStoppedEvent();
HasFiredAudioDeviceStopped = true;
return;
}
if (AudioBuffer == null)
{
return;
}
// Capture Media Block Reference
if (mediaBlock is AudioBlock == false)
{
return;
}
var audioBlock = (AudioBlock)mediaBlock;
var audioBlocks = MediaCore.Blocks[MediaType.Audio];
while (audioBlock != null)
{
if (audioBlock.TryAcquireReaderLock(out var readLock) == false)
{
return;
}
using (readLock)
{
// Write the block if we have to, avoiding repeated blocks.
if (AudioBuffer.WriteTag < audioBlock.StartTime)
{
AudioBuffer.Write(audioBlock.Buffer, audioBlock.SamplesBufferLength, audioBlock.StartTime, true);
}
// Stop adding if we have too much in there.
if (AudioBuffer.CapacityPercent >= 0.5)
{
break;
}
// Retrieve the following block
audioBlock = audioBlocks.ContinuousNext(audioBlock) as AudioBlock;
}
}
}
catch (Exception ex)
{
this.LogError(Aspects.AudioRenderer, $"{nameof(AudioRenderer)}.{nameof(Read)} has faulted.", ex);
}
finally
{
Monitor.Exit(SyncLock);
}
}