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