jellyfin/Emby.Server.Implementations/LiveTv/LiveStreamHelper.cs

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C#
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2016-10-11 06:46:59 +00:00
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;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Logging;
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namespace Emby.Server.Implementations.LiveTv
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{
public class LiveStreamHelper
{
private readonly IMediaEncoder _mediaEncoder;
private readonly ILogger _logger;
public LiveStreamHelper(IMediaEncoder mediaEncoder, ILogger logger)
{
_mediaEncoder = mediaEncoder;
_logger = logger;
}
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public async Task AddMediaInfoWithProbe(MediaSourceInfo mediaSource, bool isAudio, CancellationToken cancellationToken)
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{
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,
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AnalyzeDurationSections = 2
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}, 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;
}
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var audioStream = mediaSource.MediaStreams.FirstOrDefault(i => i.Type == MediaBrowser.Model.Entities.MediaStreamType.Audio);
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if (audioStream == null || audioStream.Index == -1)
{
mediaSource.DefaultAudioStreamIndex = null;
}
else
{
mediaSource.DefaultAudioStreamIndex = audioStream.Index;
}
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var videoStream = mediaSource.MediaStreams.FirstOrDefault(i => i.Type == MediaBrowser.Model.Entities.MediaStreamType.Video);
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if (videoStream != null)
{
if (!videoStream.BitRate.HasValue)
{
var width = videoStream.Width ?? 1920;
if (width >= 1900)
{
videoStream.BitRate = 8000000;
}
else if (width >= 1260)
{
videoStream.BitRate = 3000000;
}
else if (width >= 700)
{
videoStream.BitRate = 1000000;
}
}
// This is coming up false and preventing stream copy
videoStream.IsAVC = null;
}
// Try to estimate this
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mediaSource.InferTotalBitrate(true);
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}
}
}