/// <summary>
/// Does the preparation to start a transcode stream
/// </summary>
internal static async Task <TranscodeContext> StartTranscodeStreamingAsync(EndPointSettings client, double startTime, double lengthTime, StreamItem newStreamItem)
{
if (STREAM_ITEMS.TryAdd(client.ClientId, newStreamItem))
{
await newStreamItem.BusyLock.WaitAsync();
try
{
if (newStreamItem?.TranscoderObject?.TranscodingParameter == null)
{
STREAM_ITEMS.TryRemove(client.ClientId, out _);
return(null);
}
if (!newStreamItem.TranscoderObject.StartTrancoding())
{
Logger.Debug("StreamControl: Transcoding busy for mediaitem {0}", newStreamItem.RequestedMediaItem);
return(null);
}
if (newStreamItem.IsLive)
{
newStreamItem.StreamContext = await MediaConverter.GetLiveStreamAsync(client.ClientId.ToString(), newStreamItem.TranscoderObject.TranscodingParameter, newStreamItem.LiveChannelId, true);
}
else
{
newStreamItem.StreamContext = await MediaConverter.GetMediaStreamAsync(client.ClientId.ToString(), newStreamItem.TranscoderObject.TranscodingParameter, startTime, lengthTime, true);
}
if (newStreamItem.StreamContext is TranscodeContext context)
{
context.UpdateStreamUse(true);
return(context);
}
else if (newStreamItem.StreamContext != null)
{
//We want a transcoded stream
newStreamItem.StreamContext.Dispose();
newStreamItem.StreamContext = null;
}
return(null);
}
finally
{
newStreamItem.BusyLock.Release();
}
}
return(null);
}
/// <summary>
/// Does the preparation to start a stream
/// </summary>
/// <param name="identifier">The unique string which identifies the stream Item</param>
/// <param name="context">Transcoder context</param>
internal static async Task <TranscodeContext> StartStreamingAsync(string identifier, double startTime)
{
if (!STREAM_ITEMS.TryGetValue(identifier, out StreamItem currentStreamItem))
{
return(null);
}
using (await currentStreamItem.RequestBusyLockAsync())
{
if (currentStreamItem.TranscoderObject == null)
{
STREAM_ITEMS.TryRemove(identifier, out _);
return(null);
}
if (currentStreamItem.IsActive)
{
currentStreamItem.TranscoderObject.StopStreaming();
if (currentStreamItem.StreamContext != null)
{
if (currentStreamItem.StreamContext is TranscodeContext transcodeContext)
{
transcodeContext.UpdateStreamUse(false);
}
currentStreamItem.StreamContext.Dispose();
currentStreamItem.StreamContext = null;
}
}
if (!currentStreamItem.TranscoderObject.StartTrancoding())
{
Logger.Debug("StreamControl: Transcoding busy for mediaitem {0}", currentStreamItem.RequestedMediaItem.MediaItemId);
return(null);
}
currentStreamItem.TranscoderObject.StartStreaming();
if (currentStreamItem.IsLive)
{
currentStreamItem.StreamContext = await MediaConverter.GetLiveStreamAsync(identifier, currentStreamItem.TranscoderObject.TranscodingParameter, currentStreamItem.LiveChannelId, true);
}
else
{
currentStreamItem.StreamContext = await MediaConverter.GetMediaStreamAsync(identifier, currentStreamItem.TranscoderObject.TranscodingParameter, startTime, 0, true);
}
if (currentStreamItem.StreamContext is TranscodeContext context)
{
context.UpdateStreamUse(true);
currentStreamItem.TranscoderObject.SegmentDir = context.SegmentDir;
return(context);
}
else if (currentStreamItem.StreamContext != null)
{
//We want a transcoded stream
currentStreamItem.StreamContext.Dispose();
currentStreamItem.StreamContext = null;
}
return(null);
}
}
