804 lines
30 KiB
C#
804 lines
30 KiB
C#
using MediaBrowser.Model.Dto;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Extensions;
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using MediaBrowser.Model.MediaInfo;
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using System;
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using System.Collections.Generic;
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namespace MediaBrowser.Model.Dlna
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{
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public class StreamBuilder
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{
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private string[] _serverTextSubtitleOutputs = new string[] { "srt", "vtt" };
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public StreamInfo BuildAudioItem(AudioOptions options)
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{
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ValidateAudioInput(options);
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List<MediaSourceInfo> mediaSources = options.MediaSources;
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// If the client wants a specific media soure, filter now
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if (!string.IsNullOrEmpty(options.MediaSourceId))
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{
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// Avoid implicitly captured closure
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string mediaSourceId = options.MediaSourceId;
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mediaSources = new List<MediaSourceInfo>();
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foreach (MediaSourceInfo i in mediaSources)
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{
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if (StringHelper.EqualsIgnoreCase(i.Id, mediaSourceId))
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mediaSources.Add(i);
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}
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}
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List<StreamInfo> streams = new List<StreamInfo>();
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foreach (MediaSourceInfo i in mediaSources)
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streams.Add(BuildAudioItem(i, options));
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foreach (StreamInfo stream in streams)
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{
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stream.DeviceId = options.DeviceId;
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stream.DeviceProfileId = options.Profile.Id;
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}
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return GetOptimalStream(streams);
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}
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public StreamInfo BuildVideoItem(VideoOptions options)
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{
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ValidateInput(options);
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List<MediaSourceInfo> mediaSources = options.MediaSources;
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// If the client wants a specific media source, filter now
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if (!string.IsNullOrEmpty(options.MediaSourceId))
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{
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var newMediaSources = new List<MediaSourceInfo>();
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foreach (MediaSourceInfo i in mediaSources)
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{
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if (StringHelper.EqualsIgnoreCase(i.Id, options.MediaSourceId))
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newMediaSources.Add(i);
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}
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mediaSources = newMediaSources;
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}
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List<StreamInfo> streams = new List<StreamInfo>();
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foreach (MediaSourceInfo i in mediaSources)
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streams.Add(BuildVideoItem(i, options));
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foreach (StreamInfo stream in streams)
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{
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stream.DeviceId = options.DeviceId;
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stream.DeviceProfileId = options.Profile.Id;
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}
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return GetOptimalStream(streams);
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}
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private StreamInfo GetOptimalStream(List<StreamInfo> streams)
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{
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// Grab the first one that can be direct streamed
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// If that doesn't produce anything, just take the first
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foreach (StreamInfo i in streams)
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{
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if (i.IsDirectStream)
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{
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return i;
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}
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}
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foreach (StreamInfo stream in streams)
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{
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return stream;
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}
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return null;
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}
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private StreamInfo BuildAudioItem(MediaSourceInfo item, AudioOptions options)
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{
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StreamInfo playlistItem = new StreamInfo
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{
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ItemId = options.ItemId,
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MediaType = DlnaProfileType.Audio,
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MediaSource = item,
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RunTimeTicks = item.RunTimeTicks
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};
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int? maxBitrateSetting = options.MaxBitrate ?? options.Profile.MaxBitrate;
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MediaStream audioStream = item.DefaultAudioStream;
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// Honor the max bitrate setting
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if (IsAudioEligibleForDirectPlay(item, maxBitrateSetting))
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{
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DirectPlayProfile directPlay = null;
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foreach (DirectPlayProfile i in options.Profile.DirectPlayProfiles)
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{
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if (i.Type == playlistItem.MediaType && IsAudioDirectPlaySupported(i, item, audioStream))
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{
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directPlay = i;
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break;
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}
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}
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if (directPlay != null)
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{
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string audioCodec = audioStream == null ? null : audioStream.Codec;
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// Make sure audio codec profiles are satisfied
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if (!string.IsNullOrEmpty(audioCodec))
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{
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ConditionProcessor conditionProcessor = new ConditionProcessor();
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List<ProfileCondition> conditions = new List<ProfileCondition>();
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foreach (CodecProfile i in options.Profile.CodecProfiles)
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{
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if (i.Type == CodecType.Audio && i.ContainsCodec(audioCodec))
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{
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foreach (var c in i.Conditions)
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{
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conditions.Add(c);
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}
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}
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}
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int? audioChannels = audioStream.Channels;
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int? audioBitrate = audioStream.BitRate;
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bool all = true;
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foreach (ProfileCondition c in conditions)
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{
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if (!conditionProcessor.IsAudioConditionSatisfied(c, audioChannels, audioBitrate))
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{
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all = false;
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break;
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}
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}
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if (all)
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{
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playlistItem.IsDirectStream = true;
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playlistItem.Container = item.Container;
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return playlistItem;
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}
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}
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}
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}
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TranscodingProfile transcodingProfile = null;
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foreach (TranscodingProfile i in options.Profile.TranscodingProfiles)
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{
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if (i.Type == playlistItem.MediaType && i.Context == options.Context)
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{
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transcodingProfile = i;
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break;
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}
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}
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if (transcodingProfile != null)
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{
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playlistItem.IsDirectStream = false;
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playlistItem.TranscodeSeekInfo = transcodingProfile.TranscodeSeekInfo;
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playlistItem.EstimateContentLength = transcodingProfile.EstimateContentLength;
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playlistItem.Container = transcodingProfile.Container;
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playlistItem.AudioCodec = transcodingProfile.AudioCodec;
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playlistItem.Protocol = transcodingProfile.Protocol;
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List<CodecProfile> audioCodecProfiles = new List<CodecProfile>();
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foreach (CodecProfile i in options.Profile.CodecProfiles)
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{
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if (i.Type == CodecType.Audio && i.ContainsCodec(transcodingProfile.AudioCodec))
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{
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audioCodecProfiles.Add(i);
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}
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if (audioCodecProfiles.Count >= 1) break;
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}
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List<ProfileCondition> audioTranscodingConditions = new List<ProfileCondition>();
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foreach (CodecProfile i in audioCodecProfiles)
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{
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foreach (var c in i.Conditions)
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{
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audioTranscodingConditions.Add(c);
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}
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}
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ApplyTranscodingConditions(playlistItem, audioTranscodingConditions);
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// Honor requested max channels
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if (options.MaxAudioChannels.HasValue)
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{
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int currentValue = playlistItem.MaxAudioChannels ?? options.MaxAudioChannels.Value;
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playlistItem.MaxAudioChannels = Math.Min(options.MaxAudioChannels.Value, currentValue);
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}
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if (!playlistItem.AudioBitrate.HasValue)
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{
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playlistItem.AudioBitrate = 128000;
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}
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}
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return playlistItem;
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}
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private StreamInfo BuildVideoItem(MediaSourceInfo item, VideoOptions options)
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{
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StreamInfo playlistItem = new StreamInfo
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{
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ItemId = options.ItemId,
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MediaType = DlnaProfileType.Video,
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MediaSource = item,
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RunTimeTicks = item.RunTimeTicks
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};
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int? audioStreamIndex = options.AudioStreamIndex ?? item.DefaultAudioStreamIndex;
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playlistItem.SubtitleStreamIndex = options.SubtitleStreamIndex ?? item.DefaultSubtitleStreamIndex;
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MediaStream audioStream = audioStreamIndex.HasValue ? item.GetMediaStream(MediaStreamType.Audio, audioStreamIndex.Value) : null;
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MediaStream subtitleStream = playlistItem.SubtitleStreamIndex.HasValue ? item.GetMediaStream(MediaStreamType.Subtitle, playlistItem.SubtitleStreamIndex.Value) : null;
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MediaStream videoStream = item.VideoStream;
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int? maxBitrateSetting = options.MaxBitrate ?? options.Profile.MaxBitrate;
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if (IsEligibleForDirectPlay(item, maxBitrateSetting, subtitleStream, options))
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{
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// See if it can be direct played
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DirectPlayProfile directPlay = GetVideoDirectPlayProfile(options.Profile, item, videoStream, audioStream);
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if (directPlay != null)
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{
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playlistItem.IsDirectStream = true;
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playlistItem.Container = item.Container;
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if (subtitleStream != null)
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{
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playlistItem.SubtitleDeliveryMethod = GetDirectStreamSubtitleDeliveryMethod(subtitleStream, options);
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}
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return playlistItem;
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}
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}
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// Can't direct play, find the transcoding profile
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TranscodingProfile transcodingProfile = null;
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foreach (TranscodingProfile i in options.Profile.TranscodingProfiles)
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{
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if (i.Type == playlistItem.MediaType && i.Context == options.Context)
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{
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transcodingProfile = i;
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break;
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}
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}
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if (transcodingProfile != null)
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{
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if (subtitleStream != null)
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{
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playlistItem.SubtitleDeliveryMethod = GetTranscodedSubtitleDeliveryMethod(subtitleStream, options);
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}
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playlistItem.IsDirectStream = false;
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playlistItem.Container = transcodingProfile.Container;
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playlistItem.EstimateContentLength = transcodingProfile.EstimateContentLength;
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playlistItem.TranscodeSeekInfo = transcodingProfile.TranscodeSeekInfo;
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playlistItem.AudioCodec = transcodingProfile.AudioCodec.Split(',')[0];
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playlistItem.VideoCodec = transcodingProfile.VideoCodec;
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playlistItem.Protocol = transcodingProfile.Protocol;
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playlistItem.AudioStreamIndex = audioStreamIndex;
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List<ProfileCondition> videoTranscodingConditions = new List<ProfileCondition>();
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foreach (CodecProfile i in options.Profile.CodecProfiles)
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{
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if (i.Type == CodecType.Video && i.ContainsCodec(transcodingProfile.VideoCodec))
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{
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foreach (var c in i.Conditions)
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{
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videoTranscodingConditions.Add(c);
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}
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break;
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}
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}
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ApplyTranscodingConditions(playlistItem, videoTranscodingConditions);
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List<ProfileCondition> audioTranscodingConditions = new List<ProfileCondition>();
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foreach (CodecProfile i in options.Profile.CodecProfiles)
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{
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if (i.Type == CodecType.VideoAudio && i.ContainsCodec(transcodingProfile.AudioCodec))
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{
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foreach (var c in i.Conditions)
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{
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audioTranscodingConditions.Add(c);
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}
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break;
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}
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}
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ApplyTranscodingConditions(playlistItem, audioTranscodingConditions);
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// Honor requested max channels
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if (options.MaxAudioChannels.HasValue)
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{
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int currentValue = playlistItem.MaxAudioChannels ?? options.MaxAudioChannels.Value;
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playlistItem.MaxAudioChannels = Math.Min(options.MaxAudioChannels.Value, currentValue);
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}
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if (!playlistItem.AudioBitrate.HasValue)
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{
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playlistItem.AudioBitrate = GetAudioBitrate(playlistItem.TargetAudioChannels, playlistItem.TargetAudioCodec);
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}
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// Honor max rate
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if (maxBitrateSetting.HasValue)
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{
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int videoBitrate = maxBitrateSetting.Value;
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if (playlistItem.AudioBitrate.HasValue)
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{
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videoBitrate -= playlistItem.AudioBitrate.Value;
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}
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int currentValue = playlistItem.VideoBitrate ?? videoBitrate;
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playlistItem.VideoBitrate = Math.Min(videoBitrate, currentValue);
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}
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}
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return playlistItem;
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}
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private int GetAudioBitrate(int? channels, string codec)
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{
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if (channels.HasValue)
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{
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if (channels.Value >= 5)
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{
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return 320000;
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}
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}
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return 128000;
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}
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private DirectPlayProfile GetVideoDirectPlayProfile(DeviceProfile profile,
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MediaSourceInfo mediaSource,
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MediaStream videoStream,
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MediaStream audioStream)
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{
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// See if it can be direct played
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DirectPlayProfile directPlay = null;
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foreach (DirectPlayProfile i in profile.DirectPlayProfiles)
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{
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if (i.Type == DlnaProfileType.Video && IsVideoDirectPlaySupported(i, mediaSource, videoStream, audioStream))
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{
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directPlay = i;
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break;
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}
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}
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if (directPlay == null)
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{
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return null;
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}
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string container = mediaSource.Container;
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List<ProfileCondition> conditions = new List<ProfileCondition>();
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foreach (ContainerProfile i in profile.ContainerProfiles)
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{
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if (i.Type == DlnaProfileType.Video &&
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ListHelper.ContainsIgnoreCase(i.GetContainers(), container))
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{
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foreach (var c in i.Conditions)
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{
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conditions.Add(c);
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}
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}
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}
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ConditionProcessor conditionProcessor = new ConditionProcessor();
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int? width = videoStream == null ? null : videoStream.Width;
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int? height = videoStream == null ? null : videoStream.Height;
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int? bitDepth = videoStream == null ? null : videoStream.BitDepth;
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int? videoBitrate = videoStream == null ? null : videoStream.BitRate;
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double? videoLevel = videoStream == null ? null : videoStream.Level;
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string videoProfile = videoStream == null ? null : videoStream.Profile;
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float? videoFramerate = videoStream == null ? null : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate;
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bool? isAnamorphic = videoStream == null ? null : videoStream.IsAnamorphic;
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int? audioBitrate = audioStream == null ? null : audioStream.BitRate;
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int? audioChannels = audioStream == null ? null : audioStream.Channels;
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string audioProfile = audioStream == null ? null : audioStream.Profile;
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TransportStreamTimestamp? timestamp = videoStream == null ? TransportStreamTimestamp.None : mediaSource.Timestamp;
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int? packetLength = videoStream == null ? null : videoStream.PacketLength;
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// Check container conditions
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foreach (ProfileCondition i in conditions)
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{
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if (!conditionProcessor.IsVideoConditionSatisfied(i, audioBitrate, audioChannels, width, height, bitDepth, videoBitrate, videoProfile, videoLevel, videoFramerate, packetLength, timestamp, isAnamorphic))
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{
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return null;
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}
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}
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string videoCodec = videoStream == null ? null : videoStream.Codec;
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if (string.IsNullOrEmpty(videoCodec))
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{
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return null;
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}
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conditions = new List<ProfileCondition>();
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foreach (CodecProfile i in profile.CodecProfiles)
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{
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if (i.Type == CodecType.Video && i.ContainsCodec(videoCodec))
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{
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foreach (var c in i.Conditions)
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{
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conditions.Add(c);
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}
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}
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}
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foreach (ProfileCondition i in conditions)
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{
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if (!conditionProcessor.IsVideoConditionSatisfied(i, audioBitrate, audioChannels, width, height, bitDepth, videoBitrate, videoProfile, videoLevel, videoFramerate, packetLength, timestamp, isAnamorphic))
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{
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return null;
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}
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}
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if (audioStream != null)
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{
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string audioCodec = audioStream.Codec;
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if (string.IsNullOrEmpty(audioCodec))
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{
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return null;
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}
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conditions = new List<ProfileCondition>();
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foreach (CodecProfile i in profile.CodecProfiles)
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{
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if (i.Type == CodecType.VideoAudio && i.ContainsCodec(audioCodec))
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{
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foreach (var c in i.Conditions)
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{
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conditions.Add(c);
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}
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}
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}
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foreach (ProfileCondition i in conditions)
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{
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if (!conditionProcessor.IsVideoAudioConditionSatisfied(i, audioChannels, audioBitrate, audioProfile))
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{
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return null;
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}
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}
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}
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return directPlay;
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}
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private bool IsEligibleForDirectPlay(MediaSourceInfo item,
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int? maxBitrate,
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MediaStream subtitleStream,
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VideoOptions options)
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{
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if (subtitleStream != null)
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{
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if (!subtitleStream.IsTextSubtitleStream)
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{
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return false;
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}
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SubtitleDeliveryMethod subtitleMethod = GetDirectStreamSubtitleDeliveryMethod(subtitleStream, options);
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if (subtitleMethod != SubtitleDeliveryMethod.External && subtitleMethod != SubtitleDeliveryMethod.Direct)
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{
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return false;
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}
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}
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return IsAudioEligibleForDirectPlay(item, maxBitrate);
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}
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private SubtitleDeliveryMethod GetDirectStreamSubtitleDeliveryMethod(MediaStream subtitleStream,
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VideoOptions options)
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{
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if (subtitleStream.IsTextSubtitleStream)
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{
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string subtitleFormat = NormalizeSubtitleFormat(subtitleStream.Codec);
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bool supportsDirect = ContainsSubtitleFormat(options.Profile.SoftSubtitleProfiles, new[] { subtitleFormat });
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if (supportsDirect)
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{
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return SubtitleDeliveryMethod.Direct;
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}
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// See if the device can retrieve the subtitles externally
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bool supportsSubsExternally = options.Context == EncodingContext.Streaming &&
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ContainsSubtitleFormat(options.Profile.ExternalSubtitleProfiles, _serverTextSubtitleOutputs);
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if (supportsSubsExternally)
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{
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return SubtitleDeliveryMethod.External;
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}
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}
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return SubtitleDeliveryMethod.Encode;
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}
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private SubtitleDeliveryMethod GetTranscodedSubtitleDeliveryMethod(MediaStream subtitleStream,
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VideoOptions options)
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{
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if (subtitleStream.IsTextSubtitleStream)
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{
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// See if the device can retrieve the subtitles externally
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bool supportsSubsExternally = options.Context == EncodingContext.Streaming &&
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ContainsSubtitleFormat(options.Profile.ExternalSubtitleProfiles, _serverTextSubtitleOutputs);
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if (supportsSubsExternally)
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{
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return SubtitleDeliveryMethod.External;
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}
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// See if the device can retrieve the subtitles externally
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bool supportsEmbedded = ContainsSubtitleFormat(options.Profile.SoftSubtitleProfiles, _serverTextSubtitleOutputs);
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if (supportsEmbedded)
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{
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return SubtitleDeliveryMethod.Embed;
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}
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}
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return SubtitleDeliveryMethod.Encode;
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}
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private string NormalizeSubtitleFormat(string codec)
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{
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if (StringHelper.EqualsIgnoreCase(codec, "subrip"))
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{
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|
return SubtitleFormat.SRT;
|
|
}
|
|
|
|
return codec;
|
|
}
|
|
|
|
private bool ContainsSubtitleFormat(SubtitleProfile[] profiles, string[] formats)
|
|
{
|
|
foreach (SubtitleProfile profile in profiles)
|
|
{
|
|
if (ListHelper.ContainsIgnoreCase(formats, profile.Format))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
private bool IsAudioEligibleForDirectPlay(MediaSourceInfo item, int? maxBitrate)
|
|
{
|
|
// Honor the max bitrate setting
|
|
return !maxBitrate.HasValue || (item.Bitrate.HasValue && item.Bitrate.Value <= maxBitrate.Value);
|
|
}
|
|
|
|
private void ValidateInput(VideoOptions options)
|
|
{
|
|
ValidateAudioInput(options);
|
|
|
|
if (options.AudioStreamIndex.HasValue && string.IsNullOrEmpty(options.MediaSourceId))
|
|
{
|
|
throw new ArgumentException("MediaSourceId is required when a specific audio stream is requested");
|
|
}
|
|
|
|
if (options.SubtitleStreamIndex.HasValue && string.IsNullOrEmpty(options.MediaSourceId))
|
|
{
|
|
throw new ArgumentException("MediaSourceId is required when a specific subtitle stream is requested");
|
|
}
|
|
}
|
|
|
|
private void ValidateAudioInput(AudioOptions options)
|
|
{
|
|
if (string.IsNullOrEmpty(options.ItemId))
|
|
{
|
|
throw new ArgumentException("ItemId is required");
|
|
}
|
|
if (string.IsNullOrEmpty(options.DeviceId))
|
|
{
|
|
throw new ArgumentException("DeviceId is required");
|
|
}
|
|
if (options.Profile == null)
|
|
{
|
|
throw new ArgumentException("Profile is required");
|
|
}
|
|
if (options.MediaSources == null)
|
|
{
|
|
throw new ArgumentException("MediaSources is required");
|
|
}
|
|
}
|
|
|
|
private void ApplyTranscodingConditions(StreamInfo item, IEnumerable<ProfileCondition> conditions)
|
|
{
|
|
foreach (ProfileCondition condition in conditions)
|
|
{
|
|
string value = condition.Value;
|
|
|
|
if (string.IsNullOrEmpty(value))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
switch (condition.Property)
|
|
{
|
|
case ProfileConditionValue.AudioBitrate:
|
|
{
|
|
int num;
|
|
if (IntHelper.TryParseCultureInvariant(value, out num))
|
|
{
|
|
item.AudioBitrate = num;
|
|
}
|
|
break;
|
|
}
|
|
case ProfileConditionValue.AudioChannels:
|
|
{
|
|
int num;
|
|
if (IntHelper.TryParseCultureInvariant(value, out num))
|
|
{
|
|
item.MaxAudioChannels = num;
|
|
}
|
|
break;
|
|
}
|
|
case ProfileConditionValue.AudioProfile:
|
|
case ProfileConditionValue.IsAnamorphic:
|
|
case ProfileConditionValue.Has64BitOffsets:
|
|
case ProfileConditionValue.PacketLength:
|
|
case ProfileConditionValue.VideoTimestamp:
|
|
case ProfileConditionValue.VideoBitDepth:
|
|
{
|
|
// Not supported yet
|
|
break;
|
|
}
|
|
case ProfileConditionValue.VideoProfile:
|
|
{
|
|
item.VideoProfile = value;
|
|
break;
|
|
}
|
|
case ProfileConditionValue.Height:
|
|
{
|
|
int num;
|
|
if (IntHelper.TryParseCultureInvariant(value, out num))
|
|
{
|
|
item.MaxHeight = num;
|
|
}
|
|
break;
|
|
}
|
|
case ProfileConditionValue.VideoBitrate:
|
|
{
|
|
int num;
|
|
if (IntHelper.TryParseCultureInvariant(value, out num))
|
|
{
|
|
item.VideoBitrate = num;
|
|
}
|
|
break;
|
|
}
|
|
case ProfileConditionValue.VideoFramerate:
|
|
{
|
|
float num;
|
|
if (FloatHelper.TryParseCultureInvariant(value, out num))
|
|
{
|
|
item.MaxFramerate = num;
|
|
}
|
|
break;
|
|
}
|
|
case ProfileConditionValue.VideoLevel:
|
|
{
|
|
int num;
|
|
if (IntHelper.TryParseCultureInvariant(value, out num))
|
|
{
|
|
item.VideoLevel = num;
|
|
}
|
|
break;
|
|
}
|
|
case ProfileConditionValue.Width:
|
|
{
|
|
int num;
|
|
if (IntHelper.TryParseCultureInvariant(value, out num))
|
|
{
|
|
item.MaxWidth = num;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
throw new ArgumentException("Unrecognized ProfileConditionValue");
|
|
}
|
|
}
|
|
}
|
|
|
|
private bool IsAudioDirectPlaySupported(DirectPlayProfile profile, MediaSourceInfo item, MediaStream audioStream)
|
|
{
|
|
if (profile.Container.Length > 0)
|
|
{
|
|
// Check container type
|
|
string mediaContainer = item.Container ?? string.Empty;
|
|
bool any = false;
|
|
foreach (string i in profile.GetContainers())
|
|
{
|
|
if (StringHelper.EqualsIgnoreCase(i, mediaContainer))
|
|
{
|
|
any = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!any)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
private bool IsVideoDirectPlaySupported(DirectPlayProfile profile, MediaSourceInfo item, MediaStream videoStream, MediaStream audioStream)
|
|
{
|
|
// Only plain video files can be direct played
|
|
if (item.VideoType != VideoType.VideoFile)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (profile.Container.Length > 0)
|
|
{
|
|
// Check container type
|
|
string mediaContainer = item.Container ?? string.Empty;
|
|
bool any = false;
|
|
foreach (string i in profile.GetContainers())
|
|
{
|
|
if (StringHelper.EqualsIgnoreCase(i, mediaContainer))
|
|
{
|
|
any = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!any)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Check video codec
|
|
List<string> videoCodecs = profile.GetVideoCodecs();
|
|
if (videoCodecs.Count > 0)
|
|
{
|
|
string videoCodec = videoStream == null ? null : videoStream.Codec;
|
|
if (string.IsNullOrEmpty(videoCodec) || !ListHelper.ContainsIgnoreCase(videoCodecs, videoCodec))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
List<string> audioCodecs = profile.GetAudioCodecs();
|
|
if (audioCodecs.Count > 0)
|
|
{
|
|
// Check audio codecs
|
|
string audioCodec = audioStream == null ? null : audioStream.Codec;
|
|
if (string.IsNullOrEmpty(audioCodec) || !ListHelper.ContainsIgnoreCase(audioCodecs, audioCodec))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
}
|
|
}
|