/// <summary>
/// Called when [transcode beginning].
/// </summary>
/// <param name="path">The path.</param>
/// <param name="playSessionId">The play session identifier.</param>
/// <param name="liveStreamId">The live stream identifier.</param>
/// <param name="transcodingJobId">The transcoding job identifier.</param>
/// <param name="type">The type.</param>
/// <param name="process">The process.</param>
/// <param name="deviceId">The device id.</param>
/// <param name="state">The state.</param>
/// <param name="cancellationTokenSource">The cancellation token source.</param>
/// <returns>TranscodingJob.</returns>
public TranscodingJobDto OnTranscodeBeginning(
string path,
string?playSessionId,
string?liveStreamId,
string transcodingJobId,
TranscodingJobType type,
Process process,
string?deviceId,
StreamState state,
CancellationTokenSource cancellationTokenSource)
{
lock (_activeTranscodingJobs)
{
var job = new TranscodingJobDto(_loggerFactory.CreateLogger <TranscodingJobDto>())
{
Type = type,
Path = path,
Process = process,
ActiveRequestCount = 1,
DeviceId = deviceId,
CancellationTokenSource = cancellationTokenSource,
Id = transcodingJobId,
PlaySessionId = playSessionId,
LiveStreamId = liveStreamId,
MediaSource = state.MediaSource
};
_activeTranscodingJobs.Add(job);
ReportTranscodingProgress(job, state, null, null, null, null, null);
return(job);
}
}
private void PingTimer(TranscodingJobDto job, bool isProgressCheckIn)
{
if (job.HasExited)
{
job.StopKillTimer();
return;
}
var timerDuration = 10000;
if (job.Type != TranscodingJobType.Progressive)
{
timerDuration = 60000;
}
job.PingTimeout = timerDuration;
job.LastPingDate = DateTime.UtcNow;
// Don't start the timer for playback checkins with progressive streaming
if (job.Type != TranscodingJobType.Progressive || !isProgressCheckIn)
{
job.StartKillTimer(OnTranscodeKillTimerStopped);
}
else
{
job.ChangeKillTimerIfStarted();
}
}
private void StartThrottler(StreamState state, TranscodingJobDto transcodingJob)
{
if (EnableThrottling(state))
{
transcodingJob.TranscodingThrottler = state.TranscodingThrottler = new TranscodingThrottler(transcodingJob, new Logger <TranscodingThrottler>(new LoggerFactory()), _serverConfigurationManager, _fileSystem);
state.TranscodingThrottler.Start();
}
}
private void OnTranscodeBeginRequest(TranscodingJobDto job)
{
job.ActiveRequestCount++;
if (string.IsNullOrWhiteSpace(job.PlaySessionId) || job.Type == TranscodingJobType.Progressive)
{
job.StopKillTimer();
}
}
/// <summary>
/// Called when [transcode end].
/// </summary>
/// <param name="job">The transcode job.</param>
public void OnTranscodeEndRequest(TranscodingJobDto job)
{
job.ActiveRequestCount--;
_logger.LogDebug("OnTranscodeEndRequest job.ActiveRequestCount={ActiveRequestCount}", job.ActiveRequestCount);
if (job.ActiveRequestCount <= 0)
{
PingTimer(job, false);
}
}
/// <summary>
/// Report the transcoding progress to the session manager.
/// </summary>
/// <param name="job">The <see cref="TranscodingJobDto"/> of which the progress will be reported.</param>
/// <param name="state">The <see cref="StreamState"/> of the current transcoding job.</param>
/// <param name="transcodingPosition">The current transcoding position.</param>
/// <param name="framerate">The framerate of the transcoding job.</param>
/// <param name="percentComplete">The completion percentage of the transcode.</param>
/// <param name="bytesTranscoded">The number of bytes transcoded.</param>
/// <param name="bitRate">The bitrate of the transcoding job.</param>
public void ReportTranscodingProgress(
TranscodingJobDto job,
StreamState state,
TimeSpan?transcodingPosition,
float?framerate,
double?percentComplete,
long?bytesTranscoded,
int?bitRate)
{
var ticks = transcodingPosition?.Ticks;
if (job != null)
{
job.Framerate = framerate;
job.CompletionPercentage = percentComplete;
job.TranscodingPositionTicks = ticks;
job.BytesTranscoded = bytesTranscoded;
job.BitRate = bitRate;
}
var deviceId = state.Request.DeviceId;
if (!string.IsNullOrWhiteSpace(deviceId))
{
var audioCodec = state.ActualOutputAudioCodec;
var videoCodec = state.ActualOutputVideoCodec;
var hardwareAccelerationTypeString = _serverConfigurationManager.GetEncodingOptions().HardwareAccelerationType;
HardwareEncodingType?hardwareAccelerationType = null;
if (!string.IsNullOrEmpty(hardwareAccelerationTypeString) &&
Enum.TryParse <HardwareEncodingType>(hardwareAccelerationTypeString, out var parsedHardwareAccelerationType))
{
hardwareAccelerationType = parsedHardwareAccelerationType;
}
_sessionManager.ReportTranscodingInfo(deviceId, new TranscodingInfo
{
Bitrate = bitRate ?? state.TotalOutputBitrate,
AudioCodec = audioCodec,
VideoCodec = videoCodec,
Container = state.OutputContainer,
Framerate = framerate,
CompletionPercentage = percentComplete,
Width = state.OutputWidth,
Height = state.OutputHeight,
AudioChannels = state.OutputAudioChannels,
IsAudioDirect = EncodingHelper.IsCopyCodec(state.OutputAudioCodec),
IsVideoDirect = EncodingHelper.IsCopyCodec(state.OutputVideoCodec),
HardwareAccelerationType = hardwareAccelerationType,
TranscodeReasons = state.TranscodeReasons
});
}
}
/// <summary>
/// Processes the exited.
/// </summary>
/// <param name="process">The process.</param>
/// <param name="job">The job.</param>
/// <param name="state">The state.</param>
private void OnFfMpegProcessExited(Process process, TranscodingJobDto job, StreamState state)
{
job.HasExited = true;
_logger.LogDebug("Disposing stream resources");
state.Dispose();
if (process.ExitCode == 0)
{
_logger.LogInformation("FFMpeg exited with code 0");
}
else
{
_logger.LogError("FFMpeg exited with code {0}", process.ExitCode);
}
process.Dispose();
}
/// <summary>
/// Report the transcoding progress to the session manager.
/// </summary>
/// <param name="job">The <see cref="TranscodingJobDto"/> of which the progress will be reported.</param>
/// <param name="state">The <see cref="StreamState"/> of the current transcoding job.</param>
/// <param name="transcodingPosition">The current transcoding position.</param>
/// <param name="framerate">The framerate of the transcoding job.</param>
/// <param name="percentComplete">The completion percentage of the transcode.</param>
/// <param name="bytesTranscoded">The number of bytes transcoded.</param>
/// <param name="bitRate">The bitrate of the transcoding job.</param>
public void ReportTranscodingProgress(
TranscodingJobDto job,
StreamState state,
TimeSpan?transcodingPosition,
float?framerate,
double?percentComplete,
long?bytesTranscoded,
int?bitRate)
{
var ticks = transcodingPosition?.Ticks;
if (job != null)
{
job.Framerate = framerate;
job.CompletionPercentage = percentComplete;
job.TranscodingPositionTicks = ticks;
job.BytesTranscoded = bytesTranscoded;
job.BitRate = bitRate;
}
var deviceId = state.Request.DeviceId;
if (!string.IsNullOrWhiteSpace(deviceId))
{
var audioCodec = state.ActualOutputAudioCodec;
var videoCodec = state.ActualOutputVideoCodec;
_sessionManager.ReportTranscodingInfo(deviceId, new TranscodingInfo
{
Bitrate = bitRate ?? state.TotalOutputBitrate,
AudioCodec = audioCodec,
VideoCodec = videoCodec,
Container = state.OutputContainer,
Framerate = framerate,
CompletionPercentage = percentComplete,
Width = state.OutputWidth,
Height = state.OutputHeight,
AudioChannels = state.OutputAudioChannels,
IsAudioDirect = EncodingHelper.IsCopyCodec(state.OutputAudioCodec),
IsVideoDirect = EncodingHelper.IsCopyCodec(state.OutputVideoCodec),
TranscodeReasons = state.TranscodeReasons
});
}
}
/// <summary>
/// Kills the transcoding job.
/// </summary>
/// <param name="job">The job.</param>
/// <param name="closeLiveStream">if set to <c>true</c> [close live stream].</param>
/// <param name="delete">The delete.</param>
private async Task KillTranscodingJob(TranscodingJobDto job, bool closeLiveStream, Func <string, bool> delete)
{
job.DisposeKillTimer();
_logger.LogDebug("KillTranscodingJob - JobId {0} PlaySessionId {1}. Killing transcoding", job.Id, job.PlaySessionId);
lock (_activeTranscodingJobs)
{
_activeTranscodingJobs.Remove(job);
if (job.CancellationTokenSource?.IsCancellationRequested == false)
{
job.CancellationTokenSource.Cancel();
}
}
lock (_transcodingLocks)
{
_transcodingLocks.Remove(job.Path !);
}
lock (job.ProcessLock !)
{
#pragma warning disable CA1849 // Can't await in lock block
job.TranscodingThrottler?.Stop().GetAwaiter().GetResult();
var process = job.Process;
var hasExited = job.HasExited;
if (!hasExited)
{
try
{
_logger.LogInformation("Stopping ffmpeg process with q command for {Path}", job.Path);
process !.StandardInput.WriteLine("q");
// Need to wait because killing is asynchronous.
if (!process.WaitForExit(5000))
{
_logger.LogInformation("Killing FFmpeg process for {Path}", job.Path);
process.Kill();
}
}
catch (InvalidOperationException)
{
}
}
#pragma warning restore CA1849
}
if (delete(job.Path !))
{
await DeletePartialStreamFiles(job.Path !, job.Type, 0, 1500).ConfigureAwait(false);
}
if (closeLiveStream && !string.IsNullOrWhiteSpace(job.LiveStreamId))
{
try
{
await _mediaSourceManager.CloseLiveStream(job.LiveStreamId).ConfigureAwait(false);
}
catch (Exception ex)
{
_logger.LogError(ex, "Error closing live stream for {Path}", job.Path);
}
}
}
