private bool EnableThrottling(StreamState state)
{
var encodingOptions = ServerConfigurationManager.GetEncodingOptions();
// enable throttling when NOT using hardware acceleration
if (encodingOptions.HardwareAccelerationType == string.Empty)
{
return(state.InputProtocol == MediaProtocol.File &&
state.RunTimeTicks.HasValue &&
state.RunTimeTicks.Value >= TimeSpan.FromMinutes(5).Ticks&&
state.IsInputVideo &&
state.VideoType == VideoType.VideoFile &&
!string.Equals(state.OutputVideoCodec, "copy", StringComparison.OrdinalIgnoreCase));
}
return(false);
}
private bool EnableThrottling(StreamState state)
{
var encodingOptions = ServerConfigurationManager.GetEncodingOptions();
// enable throttling when NOT using hardware acceleration
if (string.IsNullOrEmpty(encodingOptions.HardwareAccelerationType))
{
return(state.InputProtocol == MediaProtocol.File &&
state.RunTimeTicks.HasValue &&
state.RunTimeTicks.Value >= TimeSpan.FromMinutes(5).Ticks&&
state.IsInputVideo &&
state.VideoType == VideoType.VideoFile &&
!EncodingHelper.IsCopyCodec(state.OutputVideoCodec));
}
return(false);
}
/// <summary>
/// Gets the state.
/// </summary>
/// <param name="request">The request.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>StreamState.</returns>
protected async Task <StreamState> GetState(StreamRequest request, CancellationToken cancellationToken)
{
ParseDlnaHeaders(request);
if (!string.IsNullOrWhiteSpace(request.Params))
{
ParseParams(request);
}
ParseStreamOptions(request);
var url = Request.PathInfo;
if (string.IsNullOrEmpty(request.AudioCodec))
{
request.AudioCodec = EncodingHelper.InferAudioCodec(url);
}
var enableDlnaHeaders = !string.IsNullOrWhiteSpace(request.Params) ||
string.Equals(GetHeader("GetContentFeatures.DLNA.ORG"), "1", StringComparison.OrdinalIgnoreCase);
var state = new StreamState(MediaSourceManager, TranscodingJobType)
{
Request = request,
RequestedUrl = url,
UserAgent = Request.UserAgent,
EnableDlnaHeaders = enableDlnaHeaders
};
var auth = AuthorizationContext.GetAuthorizationInfo(Request);
if (!auth.UserId.Equals(Guid.Empty))
{
state.User = UserManager.GetUserById(auth.UserId);
}
//if ((Request.UserAgent ?? string.Empty).IndexOf("iphone", StringComparison.OrdinalIgnoreCase) != -1 ||
// (Request.UserAgent ?? string.Empty).IndexOf("ipad", StringComparison.OrdinalIgnoreCase) != -1 ||
// (Request.UserAgent ?? string.Empty).IndexOf("ipod", StringComparison.OrdinalIgnoreCase) != -1)
//{
// state.SegmentLength = 6;
//}
if (state.VideoRequest != null && !string.IsNullOrWhiteSpace(state.VideoRequest.VideoCodec))
{
state.SupportedVideoCodecs = state.VideoRequest.VideoCodec.Split(',').Where(i => !string.IsNullOrWhiteSpace(i)).ToArray();
state.VideoRequest.VideoCodec = state.SupportedVideoCodecs.FirstOrDefault();
}
if (!string.IsNullOrWhiteSpace(request.AudioCodec))
{
state.SupportedAudioCodecs = request.AudioCodec.Split(',').Where(i => !string.IsNullOrWhiteSpace(i)).ToArray();
state.Request.AudioCodec = state.SupportedAudioCodecs.FirstOrDefault(i => MediaEncoder.CanEncodeToAudioCodec(i))
?? state.SupportedAudioCodecs.FirstOrDefault();
}
if (!string.IsNullOrWhiteSpace(request.SubtitleCodec))
{
state.SupportedSubtitleCodecs = request.SubtitleCodec.Split(',').Where(i => !string.IsNullOrWhiteSpace(i)).ToArray();
state.Request.SubtitleCodec = state.SupportedSubtitleCodecs.FirstOrDefault(i => MediaEncoder.CanEncodeToSubtitleCodec(i))
?? state.SupportedSubtitleCodecs.FirstOrDefault();
}
var item = LibraryManager.GetItemById(request.Id);
state.IsInputVideo = string.Equals(item.MediaType, MediaType.Video, StringComparison.OrdinalIgnoreCase);
//var primaryImage = item.GetImageInfo(ImageType.Primary, 0) ??
// item.Parents.Select(i => i.GetImageInfo(ImageType.Primary, 0)).FirstOrDefault(i => i != null);
//if (primaryImage != null)
//{
// state.AlbumCoverPath = primaryImage.Path;
//}
MediaSourceInfo mediaSource = null;
if (string.IsNullOrWhiteSpace(request.LiveStreamId))
{
var currentJob = !string.IsNullOrWhiteSpace(request.PlaySessionId) ?
ApiEntryPoint.Instance.GetTranscodingJob(request.PlaySessionId)
: null;
if (currentJob != null)
{
mediaSource = currentJob.MediaSource;
}
if (mediaSource == null)
{
var mediaSources = (await MediaSourceManager.GetPlayackMediaSources(LibraryManager.GetItemById(request.Id), null, false, false, cancellationToken).ConfigureAwait(false)).ToList();
mediaSource = string.IsNullOrEmpty(request.MediaSourceId)
? mediaSources[0]
: mediaSources.Find(i => string.Equals(i.Id, request.MediaSourceId));
if (mediaSource == null && request.MediaSourceId.Equals(request.Id))
{
mediaSource = mediaSources[0];
}
}
}
else
{
var liveStreamInfo = await MediaSourceManager.GetLiveStreamWithDirectStreamProvider(request.LiveStreamId, cancellationToken).ConfigureAwait(false);
mediaSource = liveStreamInfo.Item1;
state.DirectStreamProvider = liveStreamInfo.Item2;
}
var videoRequest = request as VideoStreamRequest;
EncodingHelper.AttachMediaSourceInfo(state, mediaSource, url);
var container = Path.GetExtension(state.RequestedUrl);
if (string.IsNullOrEmpty(container))
{
container = request.Container;
}
if (string.IsNullOrEmpty(container))
{
container = request.Static ?
StreamBuilder.NormalizeMediaSourceFormatIntoSingleContainer(state.InputContainer, state.MediaPath, null, DlnaProfileType.Audio) :
GetOutputFileExtension(state);
}
state.OutputContainer = (container ?? string.Empty).TrimStart('.');
state.OutputAudioBitrate = EncodingHelper.GetAudioBitrateParam(state.Request, state.AudioStream);
state.OutputAudioCodec = state.Request.AudioCodec;
state.OutputAudioChannels = EncodingHelper.GetNumAudioChannelsParam(state, state.AudioStream, state.OutputAudioCodec);
if (videoRequest != null)
{
state.OutputVideoCodec = state.VideoRequest.VideoCodec;
state.OutputVideoBitrate = EncodingHelper.GetVideoBitrateParamValue(state.VideoRequest, state.VideoStream, state.OutputVideoCodec);
if (videoRequest != null)
{
EncodingHelper.TryStreamCopy(state);
}
if (state.OutputVideoBitrate.HasValue && !string.Equals(state.OutputVideoCodec, "copy", StringComparison.OrdinalIgnoreCase))
{
var resolution = ResolutionNormalizer.Normalize(
state.VideoStream?.BitRate,
state.VideoStream?.Width,
state.VideoStream?.Height,
state.OutputVideoBitrate.Value,
state.VideoStream?.Codec,
state.OutputVideoCodec,
videoRequest.MaxWidth,
videoRequest.MaxHeight);
videoRequest.MaxWidth = resolution.MaxWidth;
videoRequest.MaxHeight = resolution.MaxHeight;
}
}
ApplyDeviceProfileSettings(state);
var ext = string.IsNullOrWhiteSpace(state.OutputContainer)
? GetOutputFileExtension(state)
: ('.' + state.OutputContainer);
var encodingOptions = ServerConfigurationManager.GetEncodingOptions();
state.OutputFilePath = GetOutputFilePath(state, encodingOptions, ext);
return(state);
}
/// <summary>
/// Starts the FFMPEG.
/// </summary>
/// <param name="state">The state.</param>
/// <param name="outputPath">The output path.</param>
/// <param name="cancellationTokenSource">The cancellation token source.</param>
/// <param name="workingDirectory">The working directory.</param>
/// <returns>Task.</returns>
protected async Task <TranscodingJob> StartFfMpeg(
StreamState state,
string outputPath,
CancellationTokenSource cancellationTokenSource,
string workingDirectory = null)
{
Directory.CreateDirectory(Path.GetDirectoryName(outputPath));
await AcquireResources(state, cancellationTokenSource).ConfigureAwait(false);
if (state.VideoRequest != null && !string.Equals(state.OutputVideoCodec, "copy", StringComparison.OrdinalIgnoreCase))
{
var auth = AuthorizationContext.GetAuthorizationInfo(Request);
if (auth.User != null && !auth.User.Policy.EnableVideoPlaybackTranscoding)
{
ApiEntryPoint.Instance.OnTranscodeFailedToStart(outputPath, TranscodingJobType, state);
throw new ArgumentException("User does not have access to video transcoding");
}
}
var encodingOptions = ServerConfigurationManager.GetEncodingOptions();
var process = new Process()
{
StartInfo = new ProcessStartInfo()
{
WindowStyle = ProcessWindowStyle.Hidden,
CreateNoWindow = true,
UseShellExecute = false,
// Must consume both stdout and stderr or deadlocks may occur
//RedirectStandardOutput = true,
RedirectStandardError = true,
RedirectStandardInput = true,
FileName = MediaEncoder.EncoderPath,
Arguments = GetCommandLineArguments(outputPath, encodingOptions, state, true),
WorkingDirectory = string.IsNullOrWhiteSpace(workingDirectory) ? null : workingDirectory,
ErrorDialog = false
},
EnableRaisingEvents = true
};
var transcodingJob = ApiEntryPoint.Instance.OnTranscodeBeginning(outputPath,
state.Request.PlaySessionId,
state.MediaSource.LiveStreamId,
Guid.NewGuid().ToString("N", CultureInfo.InvariantCulture),
TranscodingJobType,
process,
state.Request.DeviceId,
state,
cancellationTokenSource);
var commandLineLogMessage = process.StartInfo.FileName + " " + process.StartInfo.Arguments;
Logger.LogInformation(commandLineLogMessage);
var logFilePrefix = "ffmpeg-transcode";
if (state.VideoRequest != null &&
string.Equals(state.OutputVideoCodec, "copy", StringComparison.OrdinalIgnoreCase))
{
if (string.Equals(state.OutputAudioCodec, "copy", StringComparison.OrdinalIgnoreCase))
{
logFilePrefix = "ffmpeg-directstream";
}
else
{
logFilePrefix = "ffmpeg-remux";
}
}
var logFilePath = Path.Combine(ServerConfigurationManager.ApplicationPaths.LogDirectoryPath, logFilePrefix + "-" + Guid.NewGuid() + ".txt");
// FFMpeg writes debug/error info to stderr. This is useful when debugging so let's put it in the log directory.
Stream logStream = FileSystem.GetFileStream(logFilePath, FileOpenMode.Create, FileAccessMode.Write, FileShareMode.Read, true);
var commandLineLogMessageBytes = Encoding.UTF8.GetBytes(Request.AbsoluteUri + Environment.NewLine + Environment.NewLine + JsonSerializer.SerializeToString(state.MediaSource) + Environment.NewLine + Environment.NewLine + commandLineLogMessage + Environment.NewLine + Environment.NewLine);
await logStream.WriteAsync(commandLineLogMessageBytes, 0, commandLineLogMessageBytes.Length, cancellationTokenSource.Token).ConfigureAwait(false);
process.Exited += (sender, args) => OnFfMpegProcessExited(process, transcodingJob, state);
try
{
process.Start();
}
catch (Exception ex)
{
Logger.LogError(ex, "Error starting ffmpeg");
ApiEntryPoint.Instance.OnTranscodeFailedToStart(outputPath, TranscodingJobType, state);
throw;
}
Logger.LogDebug("Launched ffmpeg process");
state.TranscodingJob = transcodingJob;
// Important - don't await the log task or we won't be able to kill ffmpeg when the user stops playback
_ = new JobLogger(Logger).StartStreamingLog(state, process.StandardError.BaseStream, logStream);
// Wait for the file to exist before proceeeding
var ffmpegTargetFile = state.WaitForPath ?? outputPath;
Logger.LogDebug("Waiting for the creation of {0}", ffmpegTargetFile);
while (!File.Exists(ffmpegTargetFile) && !transcodingJob.HasExited)
{
await Task.Delay(100, cancellationTokenSource.Token).ConfigureAwait(false);
}
Logger.LogDebug("File {0} created or transcoding has finished", ffmpegTargetFile);
if (state.IsInputVideo && transcodingJob.Type == TranscodingJobType.Progressive && !transcodingJob.HasExited)
{
await Task.Delay(1000, cancellationTokenSource.Token).ConfigureAwait(false);
if (state.ReadInputAtNativeFramerate && !transcodingJob.HasExited)
{
await Task.Delay(1500, cancellationTokenSource.Token).ConfigureAwait(false);
}
}
if (!transcodingJob.HasExited)
{
StartThrottler(state, transcodingJob);
}
Logger.LogDebug("StartFfMpeg() finished successfully");
return(transcodingJob);
}