/// <summary>
/// Reads all the blocks of the specified media type from the source url.
/// </summary>
/// <param name="mediaSource">The subtitles URL.</param>
/// <param name="sourceType">Type of the source.</param>
/// <param name="parent">The parent.</param>
/// <returns>A buffer containing all the blocks.</returns>
internal static MediaBlockBuffer LoadBlocks(string mediaSource, MediaType sourceType, ILoggingHandler parent)
{
if (string.IsNullOrWhiteSpace(mediaSource))
{
throw new ArgumentNullException(nameof(mediaSource));
}
using (var tempContainer = new MediaContainer(mediaSource, null, parent))
{
tempContainer.Initialize();
// Skip reading and decoding unused blocks
tempContainer.MediaOptions.IsAudioDisabled = sourceType != MediaType.Audio;
tempContainer.MediaOptions.IsVideoDisabled = sourceType != MediaType.Video;
tempContainer.MediaOptions.IsSubtitleDisabled = sourceType != MediaType.Subtitle;
// Open the container
tempContainer.Open();
if (tempContainer.Components.Main == null || tempContainer.Components.MainMediaType != sourceType)
{
throw new MediaContainerException($"Could not find a stream of type '{sourceType}' to load blocks from");
}
// read all the packets and decode them
var outputFrames = new List <MediaFrame>(1024 * 8);
while (true)
{
tempContainer.Read();
var frames = tempContainer.Decode();
foreach (var frame in frames)
{
if (frame.MediaType != sourceType)
{
continue;
}
outputFrames.Add(frame);
}
if (frames.Count <= 0 && tempContainer.IsAtEndOfStream)
{
break;
}
}
// Build the result
var result = new MediaBlockBuffer(outputFrames.Count, sourceType);
foreach (var frame in outputFrames)
{
result.Add(frame, tempContainer);
}
tempContainer.Close();
return(result);
}
}
private static ConfiguredTaskAwaitable RunReaderTask()
{
if (StartTime != 0)
{
var decodedFrames = Container.Seek(TimeSpan.FromSeconds(StartTime));
HandleDecoding(decodedFrames);
}
return(Task.Run(() =>
{
while (ReadCancel == false)
{
try
{
if (Container.IsAtEndOfStream == false && ReadCancel == false)
{
// check if the packet buuffer is too low
if (Container.Components.PacketBufferCount <= 24)
{
// buffer at least 60 packets
while (Container.Components.PacketBufferCount < 48 && Container.IsAtEndOfStream == false && ReadCancel == false)
{
Container.Read();
}
($"Buffer "
+ $" | LEN: {Container.Components.PacketBufferLength / 1024d,9:0.00}K"
+ $" | CNT: {Container.Components.PacketBufferCount,12}" + $" | POS: {Container.StreamPosition / 2014d,10:0.00}K")
.Warn(typeof(Program));
}
}
}
catch { }
finally
{
DecodingDone.Wait();
}
}
$"Reader task finished".Warn(typeof(Program));
}).ConfigureAwait(false));
}
