jellyfin/Emby.Server.Implementations/LiveTv/LiveStreamHelper.cs
Luke Pulverenti 905f02e6d9 3.2.20.7
2017-06-20 15:38:42 -04:00

114 lines
3.8 KiB
C#

using System;
using System.Globalization;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Controller.MediaEncoding;
using MediaBrowser.Model.Dlna;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
namespace Emby.Server.Implementations.LiveTv
{
public class LiveStreamHelper
{
private readonly IMediaEncoder _mediaEncoder;
private readonly ILogger _logger;
const int ProbeAnalyzeDurationMs = 2000;
const int PlaybackAnalyzeDurationMs = 2000;
public LiveStreamHelper(IMediaEncoder mediaEncoder, ILogger logger)
{
_mediaEncoder = mediaEncoder;
_logger = logger;
}
public async Task AddMediaInfoWithProbe(MediaSourceInfo mediaSource, bool isAudio, CancellationToken cancellationToken)
{
var originalRuntime = mediaSource.RunTimeTicks;
var now = DateTime.UtcNow;
var info = await _mediaEncoder.GetMediaInfo(new MediaInfoRequest
{
InputPath = mediaSource.Path,
Protocol = mediaSource.Protocol,
MediaType = isAudio ? DlnaProfileType.Audio : DlnaProfileType.Video,
ExtractChapters = false,
AnalyzeDurationMs = ProbeAnalyzeDurationMs
}, cancellationToken).ConfigureAwait(false);
_logger.Info("Live tv media info probe took {0} seconds", (DateTime.UtcNow - now).TotalSeconds.ToString(CultureInfo.InvariantCulture));
mediaSource.Bitrate = info.Bitrate;
mediaSource.Container = info.Container;
mediaSource.Formats = info.Formats;
mediaSource.MediaStreams = info.MediaStreams;
mediaSource.RunTimeTicks = info.RunTimeTicks;
mediaSource.Size = info.Size;
mediaSource.Timestamp = info.Timestamp;
mediaSource.Video3DFormat = info.Video3DFormat;
mediaSource.VideoType = info.VideoType;
mediaSource.DefaultSubtitleStreamIndex = null;
// Null this out so that it will be treated like a live stream
if (!originalRuntime.HasValue)
{
mediaSource.RunTimeTicks = null;
}
var audioStream = mediaSource.MediaStreams.FirstOrDefault(i => i.Type == MediaBrowser.Model.Entities.MediaStreamType.Audio);
if (audioStream == null || audioStream.Index == -1)
{
mediaSource.DefaultAudioStreamIndex = null;
}
else
{
mediaSource.DefaultAudioStreamIndex = audioStream.Index;
}
var videoStream = mediaSource.MediaStreams.FirstOrDefault(i => i.Type == MediaBrowser.Model.Entities.MediaStreamType.Video);
if (videoStream != null)
{
if (!videoStream.BitRate.HasValue)
{
var width = videoStream.Width ?? 1920;
if (width >= 3000)
{
videoStream.BitRate = 30000000;
}
else if (width >= 1900)
{
videoStream.BitRate = 20000000;
}
else if (width >= 1200)
{
videoStream.BitRate = 8000000;
}
else if (width >= 700)
{
videoStream.BitRate = 2000000;
}
}
// This is coming up false and preventing stream copy
videoStream.IsAVC = null;
}
// Try to estimate this
mediaSource.InferTotalBitrate(true);
mediaSource.AnalyzeDurationMs = PlaybackAnalyzeDurationMs;
}
}
}