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571 lines
22 KiB
C#
571 lines
22 KiB
C#
using MediaBrowser.Model.Dto;
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using MediaBrowser.Model.Entities;
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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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using System.Globalization;
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using System.Linq;
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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 readonly CultureInfo _usCulture = new CultureInfo("en-US");
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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 = mediaSources
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.Where(i => string.Equals(i.Id, mediaSourceId, StringComparison.OrdinalIgnoreCase))
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.ToList();
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}
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List<StreamInfo> streams = mediaSources.Select(i => BuildAudioItem(i, options)).ToList();
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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 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 = mediaSources
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.Where(i => string.Equals(i.Id, mediaSourceId, StringComparison.OrdinalIgnoreCase))
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.ToList();
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}
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List<StreamInfo> streams = mediaSources.Select(i => BuildVideoItem(i, options)).ToList();
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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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return streams.FirstOrDefault(i => i.IsDirectStream) ??
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streams.FirstOrDefault();
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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.MediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Audio);
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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 = options.Profile.DirectPlayProfiles
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.FirstOrDefault(i => i.Type == playlistItem.MediaType && IsAudioDirectPlaySupported(i, item, audioStream));
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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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IEnumerable<ProfileCondition> conditions = options.Profile.CodecProfiles.Where(i => i.Type == CodecType.Audio && i.ContainsCodec(audioCodec))
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.SelectMany(i => i.Conditions);
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int? audioChannels = audioStream.Channels;
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int? audioBitrate = audioStream.BitRate;
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if (conditions.All(c => conditionProcessor.IsAudioConditionSatisfied(c, audioChannels, audioBitrate)))
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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 = options.Profile.TranscodingProfiles
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.FirstOrDefault(i => i.Type == playlistItem.MediaType);
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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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IEnumerable<ProfileCondition> audioTranscodingConditions = options.Profile.CodecProfiles
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.Where(i => i.Type == CodecType.Audio && i.ContainsCodec(transcodingProfile.AudioCodec))
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.Take(1)
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.SelectMany(i => i.Conditions);
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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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// Honor requested max bitrate
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if (maxBitrateSetting.HasValue)
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{
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int currentValue = playlistItem.AudioBitrate ?? maxBitrateSetting.Value;
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playlistItem.AudioBitrate = Math.Min(maxBitrateSetting.Value, currentValue);
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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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MediaStream audioStream = item.MediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Audio);
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MediaStream videoStream = item.MediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Video);
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int? maxBitrateSetting = options.MaxBitrate ?? options.Profile.MaxBitrate;
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if (IsEligibleForDirectPlay(item, options, maxBitrateSetting))
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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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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 = options.Profile.TranscodingProfiles
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.FirstOrDefault(i => i.Type == playlistItem.MediaType);
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if (transcodingProfile != null)
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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(',').FirstOrDefault();
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playlistItem.VideoCodec = transcodingProfile.VideoCodec;
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playlistItem.Protocol = transcodingProfile.Protocol;
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playlistItem.AudioStreamIndex = options.AudioStreamIndex;
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playlistItem.SubtitleStreamIndex = options.SubtitleStreamIndex;
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IEnumerable<ProfileCondition> videoTranscodingConditions = options.Profile.CodecProfiles
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.Where(i => i.Type == CodecType.Video && i.ContainsCodec(transcodingProfile.VideoCodec))
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.Take(1)
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.SelectMany(i => i.Conditions);
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ApplyTranscodingConditions(playlistItem, videoTranscodingConditions);
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IEnumerable<ProfileCondition> audioTranscodingConditions = options.Profile.CodecProfiles
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.Where(i => i.Type == CodecType.VideoAudio && i.ContainsCodec(transcodingProfile.AudioCodec))
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.Take(1)
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.SelectMany(i => i.Conditions);
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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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// Honor requested max bitrate
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if (options.MaxAudioTranscodingBitrate.HasValue)
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{
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int currentValue = playlistItem.AudioBitrate ?? options.MaxAudioTranscodingBitrate.Value;
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playlistItem.AudioBitrate = Math.Min(options.MaxAudioTranscodingBitrate.Value, currentValue);
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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 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 = profile.DirectPlayProfiles
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.FirstOrDefault(i => i.Type == DlnaProfileType.Video && IsVideoDirectPlaySupported(i, mediaSource, videoStream, audioStream));
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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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IEnumerable<ProfileCondition> conditions = profile.ContainerProfiles
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.Where(i => i.Type == DlnaProfileType.Video && i.GetContainers().Contains(container, StringComparer.OrdinalIgnoreCase))
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.SelectMany(i => i.Conditions);
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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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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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if (!conditions.All(i => conditionProcessor.IsVideoConditionSatisfied(i,
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audioBitrate,
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audioChannels,
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width,
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height,
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bitDepth,
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videoBitrate,
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videoProfile,
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videoLevel,
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videoFramerate,
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packetLength,
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timestamp)))
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{
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return null;
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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 = profile.CodecProfiles
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.Where(i => i.Type == CodecType.Video && i.ContainsCodec(videoCodec))
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.SelectMany(i => i.Conditions);
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if (!conditions.All(i => conditionProcessor.IsVideoConditionSatisfied(i,
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audioBitrate,
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audioChannels,
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width,
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height,
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bitDepth,
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videoBitrate,
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videoProfile,
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videoLevel,
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videoFramerate,
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packetLength,
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timestamp)))
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{
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return null;
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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 = profile.CodecProfiles
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.Where(i => i.Type == CodecType.VideoAudio && i.ContainsCodec(audioCodec))
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.SelectMany(i => i.Conditions);
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if (!conditions.All(i => conditionProcessor.IsVideoAudioConditionSatisfied(i,
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audioChannels,
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audioBitrate,
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audioProfile)))
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{
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return null;
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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, VideoOptions options, int? maxBitrate)
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{
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if (options.SubtitleStreamIndex.HasValue)
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{
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return false;
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}
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if (options.AudioStreamIndex.HasValue &&
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item.MediaStreams.Count(i => i.Type == MediaStreamType.Audio) > 1)
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{
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return false;
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}
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return IsAudioEligibleForDirectPlay(item, maxBitrate);
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}
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private bool IsAudioEligibleForDirectPlay(MediaSourceInfo item, int? maxBitrate)
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{
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// Honor the max bitrate setting
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return !maxBitrate.HasValue || (item.Bitrate.HasValue && item.Bitrate.Value <= maxBitrate.Value);
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}
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private void ValidateInput(VideoOptions options)
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{
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ValidateAudioInput(options);
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if (options.AudioStreamIndex.HasValue && string.IsNullOrEmpty(options.MediaSourceId))
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{
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throw new ArgumentException("MediaSourceId is required when a specific audio stream is requested");
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}
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if (options.SubtitleStreamIndex.HasValue && string.IsNullOrEmpty(options.MediaSourceId))
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{
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throw new ArgumentException("MediaSourceId is required when a specific subtitle stream is requested");
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}
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}
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private void ValidateAudioInput(AudioOptions options)
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{
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if (string.IsNullOrEmpty(options.ItemId))
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{
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throw new ArgumentException("ItemId is required");
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}
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if (string.IsNullOrEmpty(options.DeviceId))
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{
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throw new ArgumentException("DeviceId is required");
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}
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if (options.Profile == null)
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{
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throw new ArgumentException("Profile is required");
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}
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if (options.MediaSources == null)
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{
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throw new ArgumentException("MediaSources is required");
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}
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}
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private void ApplyTranscodingConditions(StreamInfo item, IEnumerable<ProfileCondition> conditions)
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{
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foreach (ProfileCondition condition in conditions
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.Where(i => !string.IsNullOrEmpty(i.Value)))
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{
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string value = condition.Value;
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switch (condition.Property)
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{
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case ProfileConditionValue.AudioBitrate:
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{
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int num;
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if (int.TryParse(value, NumberStyles.Any, _usCulture, out num))
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{
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item.AudioBitrate = num;
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}
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break;
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}
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case ProfileConditionValue.AudioChannels:
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{
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int num;
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if (int.TryParse(value, NumberStyles.Any, _usCulture, out num))
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{
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item.MaxAudioChannels = num;
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}
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break;
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}
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case ProfileConditionValue.AudioProfile:
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case ProfileConditionValue.Has64BitOffsets:
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case ProfileConditionValue.PacketLength:
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case ProfileConditionValue.VideoTimestamp:
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case ProfileConditionValue.VideoBitDepth:
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{
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// Not supported yet
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break;
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}
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case ProfileConditionValue.VideoProfile:
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{
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item.VideoProfile = value;
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break;
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}
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case ProfileConditionValue.Height:
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{
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int num;
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if (int.TryParse(value, NumberStyles.Any, _usCulture, out num))
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{
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item.MaxHeight = num;
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}
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break;
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}
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case ProfileConditionValue.VideoBitrate:
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{
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int num;
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if (int.TryParse(value, NumberStyles.Any, _usCulture, out num))
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{
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item.VideoBitrate = num;
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}
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break;
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}
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case ProfileConditionValue.VideoFramerate:
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{
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int num;
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if (int.TryParse(value, NumberStyles.Any, _usCulture, out num))
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{
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item.MaxFramerate = num;
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}
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break;
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}
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case ProfileConditionValue.VideoLevel:
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{
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int num;
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if (int.TryParse(value, NumberStyles.Any, _usCulture, out num))
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{
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item.VideoLevel = num;
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}
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break;
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}
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case ProfileConditionValue.Width:
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{
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int num;
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if (int.TryParse(value, NumberStyles.Any, _usCulture, out num))
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{
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item.MaxWidth = num;
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}
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break;
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}
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default:
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throw new ArgumentException("Unrecognized ProfileConditionValue");
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}
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}
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}
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private bool IsAudioDirectPlaySupported(DirectPlayProfile profile, MediaSourceInfo item, MediaStream audioStream)
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{
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if (profile.Container.Length > 0)
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{
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// Check container type
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string mediaContainer = item.Container ?? string.Empty;
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if (!profile.GetContainers().Any(i => string.Equals(i, mediaContainer, StringComparison.OrdinalIgnoreCase)))
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{
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return false;
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}
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}
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return true;
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}
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private bool IsVideoDirectPlaySupported(DirectPlayProfile profile, MediaSourceInfo item, MediaStream videoStream, MediaStream audioStream)
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{
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// Only plain video files can be direct played
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if (item.VideoType != VideoType.VideoFile)
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{
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return false;
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}
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if (profile.Container.Length > 0)
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{
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// Check container type
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string mediaContainer = item.Container ?? string.Empty;
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if (!profile.GetContainers().Any(i => string.Equals(i, mediaContainer, StringComparison.OrdinalIgnoreCase)))
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{
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return false;
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}
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}
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// Check video codec
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List<string> videoCodecs = profile.GetVideoCodecs();
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if (videoCodecs.Count > 0)
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{
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string videoCodec = videoStream == null ? null : videoStream.Codec;
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if (string.IsNullOrEmpty(videoCodec) || !videoCodecs.Contains(videoCodec, StringComparer.OrdinalIgnoreCase))
|
|
{
|
|
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) || !audioCodecs.Contains(audioCodec, StringComparer.OrdinalIgnoreCase))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
}
|
|
}
|