jellyfin-server/MediaBrowser.Api/Playback/Hls/VideoHlsService.cs
2019-02-03 10:44:07 +01:00

163 lines
5.3 KiB
C#

using System;
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.Dlna;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.Serialization;
using MediaBrowser.Model.Services;
namespace MediaBrowser.Api.Playback.Hls
{
[Route("/Videos/{Id}/live.m3u8", "GET")]
public class GetLiveHlsStream : VideoStreamRequest
{
}
/// <summary>
/// Class VideoHlsService
/// </summary>
[Authenticated]
public class VideoHlsService : BaseHlsService
{
public Task<object> Get(GetLiveHlsStream request)
{
return ProcessRequestAsync(request, true);
}
/// <summary>
/// Gets the audio arguments.
/// </summary>
protected override string GetAudioArguments(StreamState state, EncodingOptions encodingOptions)
{
var codec = EncodingHelper.GetAudioEncoder(state);
if (string.Equals(codec, "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);
}
if (state.OutputAudioSampleRate.HasValue)
{
args += " -ar " + state.OutputAudioSampleRate.Value.ToString(UsCulture);
}
args += " " + EncodingHelper.GetAudioFilterParam(state, encodingOptions, true);
return args;
}
/// <summary>
/// Gets the video arguments.
/// </summary>
protected override string GetVideoArguments(StreamState state, EncodingOptions encodingOptions)
{
if (!state.IsOutputVideo)
{
return string.Empty;
}
var codec = EncodingHelper.GetVideoEncoder(state, encodingOptions);
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))
{
// if h264_mp4toannexb is ever added, do not use it for live tv
if (state.VideoStream != null && EncodingHelper.IsH264(state.VideoStream) &&
!string.Equals(state.VideoStream.NalLengthSize, "0", StringComparison.OrdinalIgnoreCase))
{
args += " -bsf:v h264_mp4toannexb";
}
}
else
{
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 && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode;
args += " " + EncodingHelper.GetVideoQualityParam(state, codec, encodingOptions, GetDefaultH264Preset()) + keyFrameArg;
// Add resolution params, if specified
if (!hasGraphicalSubs)
{
args += EncodingHelper.GetOutputSizeParam(state, encodingOptions, codec);
}
// This is for internal graphical subs
if (hasGraphicalSubs)
{
args += EncodingHelper.GetGraphicalSubtitleParam(state, encodingOptions, codec);
}
}
args += " -flags -global_header";
if (!string.IsNullOrEmpty(state.OutputVideoSync))
{
args += " -vsync " + state.OutputVideoSync;
}
args += EncodingHelper.GetOutputFFlags(state);
return args;
}
public VideoHlsService(
IServerConfigurationManager serverConfig,
IUserManager userManager,
ILibraryManager libraryManager,
IIsoManager isoManager,
IMediaEncoder mediaEncoder,
IFileSystem fileSystem,
IDlnaManager dlnaManager,
ISubtitleEncoder subtitleEncoder,
IDeviceManager deviceManager,
IMediaSourceManager mediaSourceManager,
IJsonSerializer jsonSerializer,
IAuthorizationContext authorizationContext)
: base(serverConfig,
userManager,
libraryManager,
isoManager,
mediaEncoder,
fileSystem,
dlnaManager,
subtitleEncoder,
deviceManager,
mediaSourceManager,
jsonSerializer,
authorizationContext)
{
}
}
}