551 lines
20 KiB
C#
551 lines
20 KiB
C#
using MediaBrowser.Api.Playback.Hls;
|
|
using MediaBrowser.Common.IO;
|
|
using MediaBrowser.Common.Net;
|
|
using MediaBrowser.Controller.Configuration;
|
|
using MediaBrowser.Controller.Devices;
|
|
using MediaBrowser.Controller.Diagnostics;
|
|
using MediaBrowser.Controller.Dlna;
|
|
using MediaBrowser.Controller.Library;
|
|
using MediaBrowser.Controller.LiveTv;
|
|
using MediaBrowser.Controller.MediaEncoding;
|
|
using MediaBrowser.Controller.Net;
|
|
using MediaBrowser.Model.IO;
|
|
using ServiceStack;
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Globalization;
|
|
using System.IO;
|
|
using System.Linq;
|
|
using System.Threading;
|
|
using System.Threading.Tasks;
|
|
using MimeTypes = MediaBrowser.Model.Net.MimeTypes;
|
|
|
|
namespace MediaBrowser.Api.Playback.Dash
|
|
{
|
|
/// <summary>
|
|
/// Options is needed for chromecast. Threw Head in there since it's related
|
|
/// </summary>
|
|
[Route("/Videos/{Id}/master.mpd", "GET", Summary = "Gets a video stream using Mpeg dash.")]
|
|
[Route("/Videos/{Id}/master.mpd", "HEAD", Summary = "Gets a video stream using Mpeg dash.")]
|
|
public class GetMasterManifest : VideoStreamRequest
|
|
{
|
|
public bool EnableAdaptiveBitrateStreaming { get; set; }
|
|
|
|
public GetMasterManifest()
|
|
{
|
|
EnableAdaptiveBitrateStreaming = true;
|
|
}
|
|
}
|
|
|
|
[Route("/Videos/{Id}/dash/{SegmentType}/{SegmentId}.m4s", "GET")]
|
|
public class GetDashSegment : VideoStreamRequest
|
|
{
|
|
/// <summary>
|
|
/// Gets or sets the segment id.
|
|
/// </summary>
|
|
/// <value>The segment id.</value>
|
|
public string SegmentId { get; set; }
|
|
|
|
/// <summary>
|
|
/// Gets or sets the type of the segment.
|
|
/// </summary>
|
|
/// <value>The type of the segment.</value>
|
|
public string SegmentType { get; set; }
|
|
}
|
|
|
|
public class MpegDashService : BaseHlsService
|
|
{
|
|
public MpegDashService(IServerConfigurationManager serverConfig, IUserManager userManager, ILibraryManager libraryManager, IIsoManager isoManager, IMediaEncoder mediaEncoder, IFileSystem fileSystem, ILiveTvManager liveTvManager, IDlnaManager dlnaManager, ISubtitleEncoder subtitleEncoder, IDeviceManager deviceManager, IProcessManager processManager, IMediaSourceManager mediaSourceManager, INetworkManager networkManager)
|
|
: base(serverConfig, userManager, libraryManager, isoManager, mediaEncoder, fileSystem, liveTvManager, dlnaManager, subtitleEncoder, deviceManager, processManager, mediaSourceManager)
|
|
{
|
|
NetworkManager = networkManager;
|
|
}
|
|
|
|
protected INetworkManager NetworkManager { get; private set; }
|
|
|
|
public object Get(GetMasterManifest request)
|
|
{
|
|
var result = GetAsync(request, "GET").Result;
|
|
|
|
return result;
|
|
}
|
|
|
|
public object Head(GetMasterManifest request)
|
|
{
|
|
var result = GetAsync(request, "HEAD").Result;
|
|
|
|
return result;
|
|
}
|
|
|
|
protected override bool EnableOutputInSubFolder
|
|
{
|
|
get
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
private async Task<object> GetAsync(GetMasterManifest request, string method)
|
|
{
|
|
if (string.IsNullOrEmpty(request.MediaSourceId))
|
|
{
|
|
throw new ArgumentException("MediaSourceId is required");
|
|
}
|
|
|
|
var state = await GetState(request, CancellationToken.None).ConfigureAwait(false);
|
|
|
|
var playlistText = string.Empty;
|
|
|
|
if (string.Equals(method, "GET", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
playlistText = new ManifestBuilder().GetManifestText(state, Request.RawUrl);
|
|
}
|
|
|
|
return ResultFactory.GetResult(playlistText, MimeTypes.GetMimeType("playlist.mpd"), new Dictionary<string, string>());
|
|
}
|
|
|
|
public object Get(GetDashSegment request)
|
|
{
|
|
return GetDynamicSegment(request, request.SegmentId, request.SegmentType).Result;
|
|
}
|
|
|
|
private async Task<object> GetDynamicSegment(VideoStreamRequest request, string segmentId, string segmentType)
|
|
{
|
|
if ((request.StartTimeTicks ?? 0) > 0)
|
|
{
|
|
throw new ArgumentException("StartTimeTicks is not allowed.");
|
|
}
|
|
|
|
var cancellationTokenSource = new CancellationTokenSource();
|
|
var cancellationToken = cancellationTokenSource.Token;
|
|
|
|
var index = int.Parse(segmentId, NumberStyles.Integer, UsCulture);
|
|
|
|
var state = await GetState(request, cancellationToken).ConfigureAwait(false);
|
|
|
|
var playlistPath = Path.ChangeExtension(state.OutputFilePath, ".mpd");
|
|
|
|
var segmentExtension = GetSegmentFileExtension(state);
|
|
|
|
var segmentPath = GetSegmentPath(playlistPath, segmentType, segmentExtension, index);
|
|
var segmentLength = state.SegmentLength;
|
|
|
|
TranscodingJob job = null;
|
|
|
|
if (File.Exists(segmentPath))
|
|
{
|
|
job = ApiEntryPoint.Instance.GetTranscodingJob(playlistPath, TranscodingJobType);
|
|
return await GetSegmentResult(playlistPath, segmentPath, index, segmentLength, job, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
|
|
await ApiEntryPoint.Instance.TranscodingStartLock.WaitAsync(cancellationTokenSource.Token).ConfigureAwait(false);
|
|
try
|
|
{
|
|
if (File.Exists(segmentPath))
|
|
{
|
|
job = ApiEntryPoint.Instance.GetTranscodingJob(playlistPath, TranscodingJobType);
|
|
return await GetSegmentResult(playlistPath, segmentPath, index, segmentLength, job, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
else
|
|
{
|
|
var currentTranscodingIndex = GetCurrentTranscodingIndex(playlistPath, segmentExtension);
|
|
|
|
if (currentTranscodingIndex == null || index < currentTranscodingIndex.Value || (index - currentTranscodingIndex.Value) > 4)
|
|
{
|
|
// If the playlist doesn't already exist, startup ffmpeg
|
|
try
|
|
{
|
|
ApiEntryPoint.Instance.KillTranscodingJobs(j => j.Type == TranscodingJobType && string.Equals(j.DeviceId, request.DeviceId, StringComparison.OrdinalIgnoreCase), p => !string.Equals(p, playlistPath, StringComparison.OrdinalIgnoreCase));
|
|
|
|
if (currentTranscodingIndex.HasValue)
|
|
{
|
|
DeleteLastFile(playlistPath, segmentExtension, 0);
|
|
}
|
|
|
|
var startSeconds = index * state.SegmentLength;
|
|
request.StartTimeTicks = TimeSpan.FromSeconds(startSeconds).Ticks;
|
|
|
|
job = await StartFfMpeg(state, playlistPath, cancellationTokenSource, Path.GetDirectoryName(playlistPath)).ConfigureAwait(false);
|
|
}
|
|
catch
|
|
{
|
|
state.Dispose();
|
|
throw;
|
|
}
|
|
|
|
await WaitForMinimumSegmentCount(playlistPath, 1, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
}
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
ApiEntryPoint.Instance.TranscodingStartLock.Release();
|
|
}
|
|
|
|
Logger.Info("waiting for {0}", segmentPath);
|
|
while (!File.Exists(segmentPath))
|
|
{
|
|
await Task.Delay(50, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
|
|
Logger.Info("returning {0}", segmentPath);
|
|
job = job ?? ApiEntryPoint.Instance.GetTranscodingJob(playlistPath, TranscodingJobType);
|
|
return await GetSegmentResult(playlistPath, segmentPath, index, segmentLength, job, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
|
|
protected override async Task WaitForMinimumSegmentCount(string playlist, int segmentCount, CancellationToken cancellationToken)
|
|
{
|
|
var tmpPath = playlist + ".tmp";
|
|
Logger.Debug("Waiting for {0} segments in {1}", segmentCount, playlist);
|
|
// Double since audio and video are split
|
|
segmentCount = segmentCount * 2;
|
|
// Account for the initial segments
|
|
segmentCount += 2;
|
|
|
|
while (true)
|
|
{
|
|
FileStream fileStream;
|
|
try
|
|
{
|
|
fileStream = FileSystem.GetFileStream(tmpPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, true);
|
|
}
|
|
catch (IOException)
|
|
{
|
|
fileStream = FileSystem.GetFileStream(playlist, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, true);
|
|
}
|
|
// Need to use FileShare.ReadWrite because we're reading the file at the same time it's being written
|
|
using (fileStream)
|
|
{
|
|
using (var reader = new StreamReader(fileStream))
|
|
{
|
|
var count = 0;
|
|
|
|
while (!reader.EndOfStream)
|
|
{
|
|
var line = await reader.ReadLineAsync().ConfigureAwait(false);
|
|
|
|
if (line.IndexOf(".m4s", StringComparison.OrdinalIgnoreCase) != -1)
|
|
{
|
|
count++;
|
|
if (count >= segmentCount)
|
|
{
|
|
Logger.Debug("Finished waiting for {0} segments in {1}", segmentCount, playlist);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
await Task.Delay(100, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private async Task<object> GetSegmentResult(string playlistPath,
|
|
string segmentPath,
|
|
int segmentIndex,
|
|
int segmentLength,
|
|
TranscodingJob transcodingJob,
|
|
CancellationToken cancellationToken)
|
|
{
|
|
// If all transcoding has completed, just return immediately
|
|
if (!IsTranscoding(playlistPath))
|
|
{
|
|
return GetSegmentResult(segmentPath, segmentIndex, segmentLength, transcodingJob);
|
|
}
|
|
|
|
var segmentFilename = Path.GetFileName(segmentPath);
|
|
|
|
using (var fileStream = FileSystem.GetFileStream(playlistPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, true))
|
|
{
|
|
using (var reader = new StreamReader(fileStream))
|
|
{
|
|
var text = await reader.ReadToEndAsync().ConfigureAwait(false);
|
|
|
|
// If it appears in the playlist, it's done
|
|
if (text.IndexOf(segmentFilename, StringComparison.OrdinalIgnoreCase) != -1)
|
|
{
|
|
return GetSegmentResult(segmentPath, segmentIndex, segmentLength, transcodingJob);
|
|
}
|
|
}
|
|
}
|
|
|
|
// if a different file is encoding, it's done
|
|
//var currentTranscodingIndex = GetCurrentTranscodingIndex(playlistPath);
|
|
//if (currentTranscodingIndex > segmentIndex)
|
|
//{
|
|
//return GetSegmentResult(segmentPath, segmentIndex);
|
|
//}
|
|
|
|
// Wait for the file to stop being written to, then stream it
|
|
var length = new FileInfo(segmentPath).Length;
|
|
var eofCount = 0;
|
|
|
|
while (eofCount < 10)
|
|
{
|
|
var info = new FileInfo(segmentPath);
|
|
|
|
if (!info.Exists)
|
|
{
|
|
break;
|
|
}
|
|
|
|
var newLength = info.Length;
|
|
|
|
if (newLength == length)
|
|
{
|
|
eofCount++;
|
|
}
|
|
else
|
|
{
|
|
eofCount = 0;
|
|
}
|
|
|
|
length = newLength;
|
|
await Task.Delay(100, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
|
|
return GetSegmentResult(segmentPath, segmentIndex, segmentLength, transcodingJob);
|
|
}
|
|
|
|
private object GetSegmentResult(string segmentPath, int index, int segmentLength, TranscodingJob transcodingJob)
|
|
{
|
|
var segmentEndingSeconds = (1 + index) * segmentLength;
|
|
var segmentEndingPositionTicks = TimeSpan.FromSeconds(segmentEndingSeconds).Ticks;
|
|
|
|
return ResultFactory.GetStaticFileResult(Request, new StaticFileResultOptions
|
|
{
|
|
Path = segmentPath,
|
|
FileShare = FileShare.ReadWrite,
|
|
OnComplete = () =>
|
|
{
|
|
if (transcodingJob != null)
|
|
{
|
|
transcodingJob.DownloadPositionTicks = Math.Max(transcodingJob.DownloadPositionTicks ?? segmentEndingPositionTicks, segmentEndingPositionTicks);
|
|
}
|
|
|
|
}
|
|
});
|
|
}
|
|
|
|
private bool IsTranscoding(string playlistPath)
|
|
{
|
|
var job = ApiEntryPoint.Instance.GetTranscodingJob(playlistPath, TranscodingJobType);
|
|
|
|
return job != null && !job.HasExited;
|
|
}
|
|
|
|
public int? GetCurrentTranscodingIndex(string playlist, string segmentExtension)
|
|
{
|
|
var file = GetLastTranscodingFile(playlist, segmentExtension, FileSystem);
|
|
|
|
if (file == null)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
var playlistFilename = Path.GetFileNameWithoutExtension(playlist);
|
|
|
|
var indexString = Path.GetFileNameWithoutExtension(file.Name).Substring(playlistFilename.Length);
|
|
|
|
return int.Parse(indexString, NumberStyles.Integer, UsCulture);
|
|
}
|
|
|
|
private void DeleteLastFile(string path, string segmentExtension, int retryCount)
|
|
{
|
|
if (retryCount >= 5)
|
|
{
|
|
return;
|
|
}
|
|
|
|
var file = GetLastTranscodingFile(path, segmentExtension, FileSystem);
|
|
|
|
if (file != null)
|
|
{
|
|
try
|
|
{
|
|
FileSystem.DeleteFile(file.FullName);
|
|
}
|
|
catch (IOException ex)
|
|
{
|
|
Logger.ErrorException("Error deleting partial stream file(s) {0}", ex, file.FullName);
|
|
|
|
Thread.Sleep(100);
|
|
DeleteLastFile(path, segmentExtension, retryCount + 1);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
Logger.ErrorException("Error deleting partial stream file(s) {0}", ex, file.FullName);
|
|
}
|
|
}
|
|
}
|
|
|
|
private static FileInfo GetLastTranscodingFile(string playlist, string segmentExtension, IFileSystem fileSystem)
|
|
{
|
|
var folder = Path.GetDirectoryName(playlist);
|
|
|
|
try
|
|
{
|
|
return new DirectoryInfo(folder)
|
|
.EnumerateFiles("*", SearchOption.TopDirectoryOnly)
|
|
.Where(i => string.Equals(i.Extension, segmentExtension, StringComparison.OrdinalIgnoreCase))
|
|
.OrderByDescending(fileSystem.GetLastWriteTimeUtc)
|
|
.FirstOrDefault();
|
|
}
|
|
catch (DirectoryNotFoundException)
|
|
{
|
|
return null;
|
|
}
|
|
}
|
|
|
|
private string GetSegmentPath(string playlist, string segmentType, string segmentExtension, int index)
|
|
{
|
|
var folder = Path.GetDirectoryName(playlist);
|
|
|
|
var id = string.Equals(segmentType, "video", StringComparison.OrdinalIgnoreCase)
|
|
? "0"
|
|
: "1";
|
|
|
|
string filename;
|
|
|
|
if (index == 0)
|
|
{
|
|
filename = "init-stream" + id + segmentExtension;
|
|
}
|
|
else
|
|
{
|
|
var number = index.ToString("00000", CultureInfo.InvariantCulture);
|
|
filename = "chunk-stream" + id + "-" + number + segmentExtension;
|
|
}
|
|
|
|
return Path.Combine(folder, filename);
|
|
}
|
|
|
|
protected override string GetAudioArguments(StreamState state)
|
|
{
|
|
var codec = state.OutputAudioCodec;
|
|
|
|
if (codec.Equals("copy", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return "-codec:a:0 copy";
|
|
}
|
|
|
|
var args = "-codec:a:0 " + codec;
|
|
|
|
var channels = state.OutputAudioChannels;
|
|
|
|
if (channels.HasValue)
|
|
{
|
|
args += " -ac " + channels.Value;
|
|
}
|
|
|
|
var bitrate = state.OutputAudioBitrate;
|
|
|
|
if (bitrate.HasValue)
|
|
{
|
|
args += " -ab " + bitrate.Value.ToString(UsCulture);
|
|
}
|
|
|
|
args += " " + GetAudioFilterParam(state, true);
|
|
|
|
return args;
|
|
}
|
|
|
|
protected override string GetVideoArguments(StreamState state)
|
|
{
|
|
var codec = state.OutputVideoCodec;
|
|
|
|
var args = "-codec:v:0 " + codec;
|
|
|
|
if (state.EnableMpegtsM2TsMode)
|
|
{
|
|
args += " -mpegts_m2ts_mode 1";
|
|
}
|
|
|
|
// See if we can save come cpu cycles by avoiding encoding
|
|
if (codec.Equals("copy", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return state.VideoStream != null && IsH264(state.VideoStream) ?
|
|
args + " -bsf:v h264_mp4toannexb" :
|
|
args;
|
|
}
|
|
|
|
var keyFrameArg = string.Format(" -force_key_frames expr:gte(t,n_forced*{0})",
|
|
state.SegmentLength.ToString(UsCulture));
|
|
|
|
var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream;
|
|
|
|
args += " " + GetVideoQualityParam(state, H264Encoder, true) + keyFrameArg;
|
|
|
|
// Add resolution params, if specified
|
|
if (!hasGraphicalSubs)
|
|
{
|
|
args += GetOutputSizeParam(state, codec, false);
|
|
}
|
|
|
|
// This is for internal graphical subs
|
|
if (hasGraphicalSubs)
|
|
{
|
|
args += GetGraphicalSubtitleParam(state, codec);
|
|
}
|
|
|
|
return args;
|
|
}
|
|
|
|
protected override string GetCommandLineArguments(string outputPath, string transcodingJobId, StreamState state, bool isEncoding)
|
|
{
|
|
// test url http://192.168.1.2:8096/videos/233e8905d559a8f230db9bffd2ac9d6d/master.mpd?mediasourceid=233e8905d559a8f230db9bffd2ac9d6d&videocodec=h264&audiocodec=aac&maxwidth=1280&videobitrate=500000&audiobitrate=128000&profile=baseline&level=3
|
|
// Good info on i-frames http://blog.streamroot.io/encode-multi-bitrate-videos-mpeg-dash-mse-based-media-players/
|
|
|
|
var threads = GetNumberOfThreads(state, false);
|
|
|
|
var inputModifier = GetInputModifier(state);
|
|
|
|
var args = string.Format("{0} {1} -map_metadata -1 -threads {2} {3} {4} -copyts {5} -f dash -use_template 0 -min_seg_duration {6} -y \"{7}\"",
|
|
inputModifier,
|
|
GetInputArgument(transcodingJobId, state),
|
|
threads,
|
|
GetMapArgs(state),
|
|
GetVideoArguments(state),
|
|
GetAudioArguments(state),
|
|
(state.SegmentLength * 1000000).ToString(CultureInfo.InvariantCulture),
|
|
outputPath
|
|
).Trim();
|
|
|
|
return args;
|
|
}
|
|
|
|
//private string GetCurrentTranscodingIndex(string outputPath)
|
|
//{
|
|
|
|
//}
|
|
|
|
//private string GetNextTranscodingIndex(string outputPath)
|
|
//{
|
|
|
|
//}
|
|
|
|
//private string GetActualPlaylistPath(string outputPath, string transcodingIndex)
|
|
//{
|
|
|
|
//}
|
|
|
|
/// <summary>
|
|
/// Gets the segment file extension.
|
|
/// </summary>
|
|
/// <param name="state">The state.</param>
|
|
/// <returns>System.String.</returns>
|
|
protected override string GetSegmentFileExtension(StreamState state)
|
|
{
|
|
return ".m4s";
|
|
}
|
|
|
|
protected override TranscodingJobType TranscodingJobType
|
|
{
|
|
get
|
|
{
|
|
return TranscodingJobType.Dash;
|
|
}
|
|
}
|
|
}
|
|
}
|