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543 lines
22 KiB
543 lines
22 KiB
using MediaBrowser.Model.Dto;
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using MediaBrowser.Model.Entities;
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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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var 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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var 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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var streams = mediaSources.Select(i => BuildAudioItem(options.ItemId, i, options.Profile)).ToList();
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foreach (var 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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var 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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var 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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var streams = mediaSources.Select(i => BuildVideoItem(i, options)).ToList();
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foreach (var 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(string itemId, MediaSourceInfo item, DeviceProfile profile)
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{
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var playlistItem = new StreamInfo
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{
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ItemId = itemId,
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MediaType = DlnaProfileType.Audio,
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MediaSourceId = item.Id
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};
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var audioStream = item.MediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Audio);
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var directPlay = profile.DirectPlayProfiles
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.FirstOrDefault(i => i.Type == playlistItem.MediaType && IsAudioProfileSupported(i, item, audioStream));
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if (directPlay != null)
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{
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var 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) && profile.CodecProfiles.Where(i => i.Type == CodecType.Audio && i.ContainsCodec(audioCodec))
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.All(i => AreConditionsSatisfied(i.Conditions, item.Path, null, audioStream)))
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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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var transcodingProfile = 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.AudioCodec = transcodingProfile.AudioCodec;
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var audioTranscodingConditions = 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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}
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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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var 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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MediaSourceId = item.Id
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};
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var audioStream = item.MediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Audio);
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var videoStream = item.MediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Video);
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if (IsEligibleForDirectPlay(item, options))
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{
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// See if it can be direct played
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var directPlay = options.Profile.DirectPlayProfiles
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.FirstOrDefault(i => i.Type == playlistItem.MediaType && IsVideoProfileSupported(i, item, videoStream, audioStream));
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if (directPlay != null)
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{
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var videoCodec = videoStream == null ? null : videoStream.Codec;
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// Make sure video codec profiles are satisfied
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if (!string.IsNullOrEmpty(videoCodec) && options.Profile.CodecProfiles.Where(i => i.Type == CodecType.Video && i.ContainsCodec(videoCodec))
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.All(i => AreConditionsSatisfied(i.Conditions, item.Path, videoStream, audioStream)))
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{
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var 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) || options.Profile.CodecProfiles.Where(i => i.Type == CodecType.VideoAudio && i.ContainsCodec(audioCodec))
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.All(i => AreConditionsSatisfied(i.Conditions, item.Path, videoStream, audioStream)))
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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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// Can't direct play, find the transcoding profile
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var 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.AudioCodec = transcodingProfile.AudioCodec.Split(',').FirstOrDefault();
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playlistItem.VideoCodec = transcodingProfile.VideoCodec;
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var 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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var 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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}
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return playlistItem;
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}
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private bool IsEligibleForDirectPlay(MediaSourceInfo item, VideoOptions options)
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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 true;
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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 (var condition in conditions
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.Where(i => !string.IsNullOrEmpty(i.Value)))
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{
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var 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.VideoBitDepth:
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case ProfileConditionValue.VideoProfile:
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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.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 IsAudioProfileSupported(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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var 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 IsVideoProfileSupported(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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var 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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var videoCodecs = profile.GetVideoCodecs();
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if (videoCodecs.Count > 0)
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{
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var videoCodec = videoStream == null ? null : videoStream.Codec;
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if (string.IsNullOrEmpty(videoCodec) || !videoCodecs.Contains(videoCodec, StringComparer.OrdinalIgnoreCase))
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{
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return false;
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}
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}
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var audioCodecs = profile.GetAudioCodecs();
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if (audioCodecs.Count > 0)
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{
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// Check audio codecs
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var audioCodec = audioStream == null ? null : audioStream.Codec;
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if (string.IsNullOrEmpty(audioCodec) || !audioCodecs.Contains(audioCodec, StringComparer.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 AreConditionsSatisfied(IEnumerable<ProfileCondition> conditions, string mediaPath, MediaStream videoStream, MediaStream audioStream)
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{
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return conditions.All(i => IsConditionSatisfied(i, mediaPath, videoStream, audioStream));
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}
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/// <summary>
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/// Determines whether [is condition satisfied] [the specified condition].
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/// </summary>
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/// <param name="condition">The condition.</param>
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/// <param name="mediaPath">The media path.</param>
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/// <param name="videoStream">The video stream.</param>
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/// <param name="audioStream">The audio stream.</param>
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/// <returns><c>true</c> if [is condition satisfied] [the specified condition]; otherwise, <c>false</c>.</returns>
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/// <exception cref="System.InvalidOperationException">Unexpected ProfileConditionType</exception>
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private bool IsConditionSatisfied(ProfileCondition condition, string mediaPath, MediaStream videoStream, MediaStream audioStream)
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{
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if (condition.Property == ProfileConditionValue.Has64BitOffsets)
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{
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// TODO: Determine how to evaluate this
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}
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if (condition.Property == ProfileConditionValue.VideoProfile)
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{
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var profile = videoStream == null ? null : videoStream.Profile;
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if (!string.IsNullOrEmpty(profile))
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{
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switch (condition.Condition)
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{
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case ProfileConditionType.Equals:
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return string.Equals(profile, condition.Value, StringComparison.OrdinalIgnoreCase);
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case ProfileConditionType.NotEquals:
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return !string.Equals(profile, condition.Value, StringComparison.OrdinalIgnoreCase);
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default:
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throw new InvalidOperationException("Unexpected ProfileConditionType");
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}
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}
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}
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else if (condition.Property == ProfileConditionValue.AudioProfile)
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{
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var profile = audioStream == null ? null : audioStream.Profile;
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if (!string.IsNullOrEmpty(profile))
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{
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switch (condition.Condition)
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{
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case ProfileConditionType.Equals:
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return string.Equals(profile, condition.Value, StringComparison.OrdinalIgnoreCase);
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case ProfileConditionType.NotEquals:
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return !string.Equals(profile, condition.Value, StringComparison.OrdinalIgnoreCase);
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default:
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throw new InvalidOperationException("Unexpected ProfileConditionType");
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}
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}
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}
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else
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{
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var actualValue = GetConditionValue(condition, mediaPath, videoStream, audioStream);
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if (actualValue.HasValue)
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{
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double expected;
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if (double.TryParse(condition.Value, NumberStyles.Any, _usCulture, out expected))
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{
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switch (condition.Condition)
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{
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case ProfileConditionType.Equals:
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return actualValue.Value.Equals(expected);
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case ProfileConditionType.GreaterThanEqual:
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return actualValue.Value >= expected;
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case ProfileConditionType.LessThanEqual:
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return actualValue.Value <= expected;
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case ProfileConditionType.NotEquals:
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return !actualValue.Value.Equals(expected);
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default:
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throw new InvalidOperationException("Unexpected ProfileConditionType");
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}
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}
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}
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}
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// Value doesn't exist in metadata. Fail it if required.
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return !condition.IsRequired;
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}
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/// <summary>
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/// Gets the condition value.
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/// </summary>
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/// <param name="condition">The condition.</param>
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/// <param name="mediaPath">The media path.</param>
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/// <param name="videoStream">The video stream.</param>
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/// <param name="audioStream">The audio stream.</param>
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/// <returns>System.Nullable{System.Int64}.</returns>
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/// <exception cref="System.InvalidOperationException">Unexpected Property</exception>
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private double? GetConditionValue(ProfileCondition condition, string mediaPath, MediaStream videoStream, MediaStream audioStream)
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{
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switch (condition.Property)
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{
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case ProfileConditionValue.AudioBitrate:
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return audioStream == null ? null : audioStream.BitRate;
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case ProfileConditionValue.AudioChannels:
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return audioStream == null ? null : audioStream.Channels;
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case ProfileConditionValue.VideoBitrate:
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return videoStream == null ? null : videoStream.BitRate;
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case ProfileConditionValue.VideoFramerate:
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return videoStream == null ? null : (videoStream.AverageFrameRate ?? videoStream.RealFrameRate);
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case ProfileConditionValue.Height:
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return videoStream == null ? null : videoStream.Height;
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case ProfileConditionValue.Width:
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return videoStream == null ? null : videoStream.Width;
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case ProfileConditionValue.VideoLevel:
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return videoStream == null ? null : videoStream.Level;
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case ProfileConditionValue.VideoBitDepth:
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return videoStream == null ? null : GetBitDepth(videoStream);
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default:
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throw new InvalidOperationException("Unexpected Property");
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}
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}
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private int? GetBitDepth(MediaStream videoStream)
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{
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var eightBit = new List<string>
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{
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"yuv420p",
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"yuv411p",
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"yuvj420p",
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"uyyvyy411",
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"nv12",
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"nv21",
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"rgb444le",
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"rgb444be",
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"bgr444le",
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"bgr444be",
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"yuvj411p"
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};
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if (!string.IsNullOrEmpty(videoStream.PixelFormat))
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{
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if (eightBit.Contains(videoStream.PixelFormat, StringComparer.OrdinalIgnoreCase))
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{
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return 8;
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}
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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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