You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
350 lines
14 KiB
350 lines
14 KiB
using System;
|
|
using System.Collections.Generic;
|
|
using System.Globalization;
|
|
using System.IO;
|
|
using System.Text;
|
|
using System.Threading;
|
|
using System.Threading.Tasks;
|
|
using MediaBrowser.Controller.Configuration;
|
|
using MediaBrowser.Controller.Devices;
|
|
using MediaBrowser.Controller.Dlna;
|
|
using MediaBrowser.Controller.Library;
|
|
using MediaBrowser.Controller.MediaEncoding;
|
|
using MediaBrowser.Controller.Net;
|
|
using MediaBrowser.Model.Configuration;
|
|
using MediaBrowser.Model.IO;
|
|
using MediaBrowser.Model.Net;
|
|
using MediaBrowser.Model.Serialization;
|
|
using Microsoft.Extensions.Logging;
|
|
|
|
namespace MediaBrowser.Api.Playback.Hls
|
|
{
|
|
/// <summary>
|
|
/// Class BaseHlsService
|
|
/// </summary>
|
|
public abstract class BaseHlsService : BaseStreamingService
|
|
{
|
|
public BaseHlsService(
|
|
ILogger logger,
|
|
IServerConfigurationManager serverConfigurationManager,
|
|
IHttpResultFactory httpResultFactory,
|
|
IUserManager userManager,
|
|
ILibraryManager libraryManager,
|
|
IIsoManager isoManager,
|
|
IMediaEncoder mediaEncoder,
|
|
IFileSystem fileSystem,
|
|
IDlnaManager dlnaManager,
|
|
ISubtitleEncoder subtitleEncoder,
|
|
IDeviceManager deviceManager,
|
|
IMediaSourceManager mediaSourceManager,
|
|
IJsonSerializer jsonSerializer,
|
|
IAuthorizationContext authorizationContext)
|
|
: base(
|
|
logger,
|
|
serverConfigurationManager,
|
|
httpResultFactory,
|
|
userManager,
|
|
libraryManager,
|
|
isoManager,
|
|
mediaEncoder,
|
|
fileSystem,
|
|
dlnaManager,
|
|
subtitleEncoder,
|
|
deviceManager,
|
|
mediaSourceManager,
|
|
jsonSerializer,
|
|
authorizationContext)
|
|
{
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the audio arguments.
|
|
/// </summary>
|
|
protected abstract string GetAudioArguments(StreamState state, EncodingOptions encodingOptions);
|
|
|
|
/// <summary>
|
|
/// Gets the video arguments.
|
|
/// </summary>
|
|
protected abstract string GetVideoArguments(StreamState state, EncodingOptions encodingOptions);
|
|
|
|
/// <summary>
|
|
/// Gets the segment file extension.
|
|
/// </summary>
|
|
protected string GetSegmentFileExtension(StreamRequest request)
|
|
{
|
|
var segmentContainer = request.SegmentContainer;
|
|
if (!string.IsNullOrWhiteSpace(segmentContainer))
|
|
{
|
|
return "." + segmentContainer;
|
|
}
|
|
|
|
return ".ts";
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the type of the transcoding job.
|
|
/// </summary>
|
|
/// <value>The type of the transcoding job.</value>
|
|
protected override TranscodingJobType TranscodingJobType => TranscodingJobType.Hls;
|
|
|
|
/// <summary>
|
|
/// Processes the request async.
|
|
/// </summary>
|
|
/// <param name="request">The request.</param>
|
|
/// <param name="isLive">if set to <c>true</c> [is live].</param>
|
|
/// <returns>Task{System.Object}.</returns>
|
|
/// <exception cref="ArgumentException">A video bitrate is required
|
|
/// or
|
|
/// An audio bitrate is required</exception>
|
|
protected async Task<object> ProcessRequestAsync(StreamRequest request, bool isLive)
|
|
{
|
|
var cancellationTokenSource = new CancellationTokenSource();
|
|
|
|
var state = await GetState(request, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
|
|
TranscodingJob job = null;
|
|
var playlist = state.OutputFilePath;
|
|
|
|
if (!File.Exists(playlist))
|
|
{
|
|
var transcodingLock = ApiEntryPoint.Instance.GetTranscodingLock(playlist);
|
|
await transcodingLock.WaitAsync(cancellationTokenSource.Token).ConfigureAwait(false);
|
|
try
|
|
{
|
|
if (!File.Exists(playlist))
|
|
{
|
|
// If the playlist doesn't already exist, startup ffmpeg
|
|
try
|
|
{
|
|
job = await StartFfMpeg(state, playlist, cancellationTokenSource).ConfigureAwait(false);
|
|
job.IsLiveOutput = isLive;
|
|
}
|
|
catch
|
|
{
|
|
state.Dispose();
|
|
throw;
|
|
}
|
|
|
|
var minSegments = state.MinSegments;
|
|
if (minSegments > 0)
|
|
{
|
|
await WaitForMinimumSegmentCount(playlist, minSegments, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
}
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
transcodingLock.Release();
|
|
}
|
|
}
|
|
|
|
if (isLive)
|
|
{
|
|
job = job ?? ApiEntryPoint.Instance.OnTranscodeBeginRequest(playlist, TranscodingJobType);
|
|
|
|
if (job != null)
|
|
{
|
|
ApiEntryPoint.Instance.OnTranscodeEndRequest(job);
|
|
}
|
|
return ResultFactory.GetResult(GetLivePlaylistText(playlist, state.SegmentLength), MimeTypes.GetMimeType("playlist.m3u8"), new Dictionary<string, string>());
|
|
}
|
|
|
|
var audioBitrate = state.OutputAudioBitrate ?? 0;
|
|
var videoBitrate = state.OutputVideoBitrate ?? 0;
|
|
|
|
var baselineStreamBitrate = 64000;
|
|
|
|
var playlistText = GetMasterPlaylistFileText(playlist, videoBitrate + audioBitrate, baselineStreamBitrate);
|
|
|
|
job = job ?? ApiEntryPoint.Instance.OnTranscodeBeginRequest(playlist, TranscodingJobType);
|
|
|
|
if (job != null)
|
|
{
|
|
ApiEntryPoint.Instance.OnTranscodeEndRequest(job);
|
|
}
|
|
|
|
return ResultFactory.GetResult(playlistText, MimeTypes.GetMimeType("playlist.m3u8"), new Dictionary<string, string>());
|
|
}
|
|
|
|
private string GetLivePlaylistText(string path, int segmentLength)
|
|
{
|
|
using (var stream = FileSystem.GetFileStream(path, FileOpenMode.Open, FileAccessMode.Read, FileShareMode.ReadWrite))
|
|
{
|
|
using (var reader = new StreamReader(stream))
|
|
{
|
|
var text = reader.ReadToEnd();
|
|
|
|
text = text.Replace("#EXTM3U", "#EXTM3U\n#EXT-X-PLAYLIST-TYPE:EVENT");
|
|
|
|
var newDuration = "#EXT-X-TARGETDURATION:" + segmentLength.ToString(CultureInfo.InvariantCulture);
|
|
|
|
text = text.Replace("#EXT-X-TARGETDURATION:" + (segmentLength - 1).ToString(CultureInfo.InvariantCulture), newDuration, StringComparison.OrdinalIgnoreCase);
|
|
//text = text.Replace("#EXT-X-TARGETDURATION:" + (segmentLength + 1).ToString(CultureInfo.InvariantCulture), newDuration, StringComparison.OrdinalIgnoreCase);
|
|
|
|
return text;
|
|
}
|
|
}
|
|
}
|
|
|
|
private string GetMasterPlaylistFileText(string firstPlaylist, int bitrate, int baselineStreamBitrate)
|
|
{
|
|
var builder = new StringBuilder();
|
|
|
|
builder.AppendLine("#EXTM3U");
|
|
|
|
// Pad a little to satisfy the apple hls validator
|
|
var paddedBitrate = Convert.ToInt32(bitrate * 1.15);
|
|
|
|
// Main stream
|
|
builder.AppendLine("#EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=" + paddedBitrate.ToString(CultureInfo.InvariantCulture));
|
|
var playlistUrl = "hls/" + Path.GetFileName(firstPlaylist).Replace(".m3u8", "/stream.m3u8");
|
|
builder.AppendLine(playlistUrl);
|
|
|
|
return builder.ToString();
|
|
}
|
|
|
|
protected virtual async Task WaitForMinimumSegmentCount(string playlist, int segmentCount, CancellationToken cancellationToken)
|
|
{
|
|
Logger.LogDebug("Waiting for {0} segments in {1}", segmentCount, playlist);
|
|
|
|
while (!cancellationToken.IsCancellationRequested)
|
|
{
|
|
try
|
|
{
|
|
// Need to use FileShareMode.ReadWrite because we're reading the file at the same time it's being written
|
|
using (var fileStream = GetPlaylistFileStream(playlist))
|
|
{
|
|
using (var reader = new StreamReader(fileStream))
|
|
{
|
|
var count = 0;
|
|
|
|
while (!reader.EndOfStream)
|
|
{
|
|
var line = reader.ReadLine();
|
|
|
|
if (line.IndexOf("#EXTINF:", StringComparison.OrdinalIgnoreCase) != -1)
|
|
{
|
|
count++;
|
|
if (count >= segmentCount)
|
|
{
|
|
Logger.LogDebug("Finished waiting for {0} segments in {1}", segmentCount, playlist);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
await Task.Delay(100, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
}
|
|
}
|
|
catch (IOException)
|
|
{
|
|
// May get an error if the file is locked
|
|
}
|
|
|
|
await Task.Delay(50, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
}
|
|
|
|
protected Stream GetPlaylistFileStream(string path)
|
|
{
|
|
var tmpPath = path + ".tmp";
|
|
tmpPath = path;
|
|
|
|
try
|
|
{
|
|
return FileSystem.GetFileStream(tmpPath, FileOpenMode.Open, FileAccessMode.Read, FileShareMode.ReadWrite, FileOpenOptions.SequentialScan);
|
|
}
|
|
catch (IOException)
|
|
{
|
|
return FileSystem.GetFileStream(path, FileOpenMode.Open, FileAccessMode.Read, FileShareMode.ReadWrite, FileOpenOptions.SequentialScan);
|
|
}
|
|
}
|
|
|
|
protected override string GetCommandLineArguments(string outputPath, EncodingOptions encodingOptions, StreamState state, bool isEncoding)
|
|
{
|
|
var itsOffsetMs = 0;
|
|
|
|
var itsOffset = itsOffsetMs == 0 ? string.Empty : string.Format("-itsoffset {0} ", TimeSpan.FromMilliseconds(itsOffsetMs).TotalSeconds.ToString(CultureInfo.InvariantCulture));
|
|
|
|
var videoCodec = EncodingHelper.GetVideoEncoder(state, encodingOptions);
|
|
|
|
var threads = EncodingHelper.GetNumberOfThreads(state, encodingOptions, videoCodec);
|
|
|
|
var inputModifier = EncodingHelper.GetInputModifier(state, encodingOptions);
|
|
|
|
// If isEncoding is true we're actually starting ffmpeg
|
|
var startNumberParam = isEncoding ? GetStartNumber(state).ToString(CultureInfo.InvariantCulture) : "0";
|
|
|
|
var baseUrlParam = string.Empty;
|
|
|
|
if (state.Request is GetLiveHlsStream)
|
|
{
|
|
baseUrlParam = string.Format(" -hls_base_url \"{0}/\"",
|
|
"hls/" + Path.GetFileNameWithoutExtension(outputPath));
|
|
}
|
|
|
|
var useGenericSegmenter = true;
|
|
if (useGenericSegmenter)
|
|
{
|
|
var outputTsArg = Path.Combine(Path.GetDirectoryName(outputPath), Path.GetFileNameWithoutExtension(outputPath)) + "%d" + GetSegmentFileExtension(state.Request);
|
|
|
|
var timeDeltaParam = string.Empty;
|
|
|
|
var segmentFormat = GetSegmentFileExtension(state.Request).TrimStart('.');
|
|
if (string.Equals(segmentFormat, "ts", StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
segmentFormat = "mpegts";
|
|
}
|
|
|
|
baseUrlParam = string.Format("\"{0}/\"", "hls/" + Path.GetFileNameWithoutExtension(outputPath));
|
|
|
|
return string.Format("{0} {1} -map_metadata -1 -map_chapters -1 -threads {2} {3} {4} {5} -f segment -max_delay 5000000 -avoid_negative_ts disabled -start_at_zero -segment_time {6} {10} -individual_header_trailer 0 -segment_format {11} -segment_list_entry_prefix {12} -segment_list_type m3u8 -segment_start_number {7} -segment_list \"{8}\" -y \"{9}\"",
|
|
inputModifier,
|
|
EncodingHelper.GetInputArgument(state, encodingOptions),
|
|
threads,
|
|
EncodingHelper.GetMapArgs(state),
|
|
GetVideoArguments(state, encodingOptions),
|
|
GetAudioArguments(state, encodingOptions),
|
|
state.SegmentLength.ToString(CultureInfo.InvariantCulture),
|
|
startNumberParam,
|
|
outputPath,
|
|
outputTsArg,
|
|
timeDeltaParam,
|
|
segmentFormat,
|
|
baseUrlParam
|
|
).Trim();
|
|
}
|
|
|
|
// add when stream copying?
|
|
// -avoid_negative_ts make_zero -fflags +genpts
|
|
|
|
var args = string.Format("{0} {1} {2} -map_metadata -1 -map_chapters -1 -threads {3} {4} {5} -max_delay 5000000 -avoid_negative_ts disabled -start_at_zero {6} -hls_time {7} -individual_header_trailer 0 -start_number {8} -hls_list_size {9}{10} -y \"{11}\"",
|
|
itsOffset,
|
|
inputModifier,
|
|
EncodingHelper.GetInputArgument(state, encodingOptions),
|
|
threads,
|
|
EncodingHelper.GetMapArgs(state),
|
|
GetVideoArguments(state, encodingOptions),
|
|
GetAudioArguments(state, encodingOptions),
|
|
state.SegmentLength.ToString(CultureInfo.InvariantCulture),
|
|
startNumberParam,
|
|
state.HlsListSize.ToString(CultureInfo.InvariantCulture),
|
|
baseUrlParam,
|
|
outputPath
|
|
).Trim();
|
|
|
|
return args;
|
|
}
|
|
|
|
protected override string GetDefaultEncoderPreset()
|
|
{
|
|
return "veryfast";
|
|
}
|
|
|
|
protected virtual int GetStartNumber(StreamState state)
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
}
|