/// <summary>
/// Does the preparation to start a stream
/// </summary>
internal static async Task <StreamContext> StartOriginalFileStreamingAsync(EndPointSettings client, StreamItem newStreamItem)
{
if (STREAM_ITEMS.TryAdd(client.ClientId, newStreamItem))
{
await newStreamItem.BusyLock.WaitAsync();
try
{
IMediaAccessor mediaAccessor = ServiceRegistration.Get <IMediaAccessor>();
List <IResourceAccessor> resources = new List <IResourceAccessor>();
foreach (var res in newStreamItem.TranscoderObject.Metadata.FilePaths)
{
var path = ResourcePath.Deserialize(res.Value);
if (mediaAccessor.LocalResourceProviders.TryGetValue(path.BasePathSegment.ProviderId, out var resourceProvider) &&
resourceProvider is IBaseResourceProvider baseProvider && baseProvider.TryCreateResourceAccessor(path.BasePathSegment.Path, out var accessor))
{
using (accessor)
{
if (accessor is IFileSystemResourceAccessor)
{
newStreamItem.TranscoderObject.StartStreaming();
newStreamItem.StreamContext = await MediaConverter.GetFileStreamAsync(path);
return(newStreamItem.StreamContext);
}
}
}
}
}
finally
{
newStreamItem.BusyLock.Release();
}
}
return(null);
}
/// <summary>
/// Returns a DLNA media item based on the given client and request
/// </summary>
/// <returns>Returns the requested DLNA media item otherwise null</returns>
internal static StreamItem GetNewStreamItem(EndPointSettings client, Uri uri)
{
if (STREAM_ITEMS.TryGetValue(client.ClientId, out var currentStreamItem))
{
return(currentStreamItem);
}
currentStreamItem = new StreamItem(uri.Host);
Guid mediaItemGuid = Guid.Empty;
DlnaMediaItem dlnaItem = null;
int channel = 0;
if (DlnaResourceAccessUtils.ParseMediaItem(uri, out mediaItemGuid))
{
if (mediaItemGuid == Guid.Empty)
{
throw new InvalidOperationException(string.Format("Illegal request syntax. Correct syntax is '{0}'", DlnaResourceAccessUtils.SYNTAX));
}
if (!client.DlnaMediaItems.TryGetValue(mediaItemGuid, out dlnaItem))
{
// Attempt to grab the media item from the database.
MediaItem item = MediaLibraryHelper.GetMediaItem(mediaItemGuid);
if (item == null)
{
throw new Exception(string.Format("Media item '{0}' not found.", mediaItemGuid));
}
dlnaItem = client.GetDlnaItem(item);
}
if (dlnaItem == null)
{
throw new Exception(string.Format("DLNA media item '{0}' not found.", mediaItemGuid));
}
}
else if (DlnaResourceAccessUtils.ParseTVChannel(uri, out channel))
{
dlnaItem = client.GetLiveDlnaItem(channel);
if (dlnaItem == null)
{
throw new Exception(string.Format("DLNA TV channel '{0}' was never tuned.", channel));
}
}
else if (DlnaResourceAccessUtils.ParseRadioChannel(uri, out channel))
{
dlnaItem = client.GetLiveDlnaItem(channel);
if (dlnaItem == null)
{
throw new Exception(string.Format("DLNA radio channel '{0}' was never tuned.", channel));
}
}
currentStreamItem.RequestedMediaItem = mediaItemGuid;
currentStreamItem.TranscoderObject = dlnaItem;
currentStreamItem.Title = dlnaItem?.MediaItemTitle;
currentStreamItem.LiveChannelId = channel > 0 ? channel : 0;
return(currentStreamItem);
}
/// <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);
}
