jellyfin/MediaBrowser.Model/Dlna/StreamBuilder.cs

#nullable disable
#pragma warning disable CS1591

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.MediaInfo;
using MediaBrowser.Model.Session;
using Microsoft.Extensions.Logging;

namespace MediaBrowser.Model.Dlna
{
    public class StreamBuilder
    {
        // Aliases
        internal const TranscodeReason ContainerReasons = TranscodeReason.ContainerNotSupported | TranscodeReason.ContainerBitrateExceedsLimit;
        internal const TranscodeReason AudioReasons = TranscodeReason.AudioCodecNotSupported | TranscodeReason.AudioBitrateNotSupported | TranscodeReason.AudioChannelsNotSupported | TranscodeReason.AudioProfileNotSupported | TranscodeReason.AudioSampleRateNotSupported | TranscodeReason.SecondaryAudioNotSupported | TranscodeReason.AudioBitDepthNotSupported | TranscodeReason.AudioIsExternal;
        internal const TranscodeReason VideoReasons = TranscodeReason.VideoCodecNotSupported | TranscodeReason.VideoResolutionNotSupported | TranscodeReason.AnamorphicVideoNotSupported | TranscodeReason.InterlacedVideoNotSupported | TranscodeReason.VideoBitDepthNotSupported | TranscodeReason.VideoBitrateNotSupported | TranscodeReason.VideoFramerateNotSupported | TranscodeReason.VideoLevelNotSupported | TranscodeReason.RefFramesNotSupported;
        internal const TranscodeReason DirectStreamReasons = AudioReasons | TranscodeReason.ContainerNotSupported;

        private readonly ILogger _logger;
        private readonly ITranscoderSupport _transcoderSupport;

        public StreamBuilder(ITranscoderSupport transcoderSupport, ILogger logger)
        {
            _transcoderSupport = transcoderSupport;
            _logger = logger;
        }

        public StreamBuilder(ILogger<StreamBuilder> logger)
            : this(new FullTranscoderSupport(), logger)
        {
        }

        public StreamInfo BuildAudioItem(AudioOptions options)
        {
            ValidateAudioInput(options);

            var mediaSources = new List<MediaSourceInfo>();
            foreach (MediaSourceInfo i in options.MediaSources)
            {
                if (string.IsNullOrEmpty(options.MediaSourceId) ||
                    string.Equals(i.Id, options.MediaSourceId, StringComparison.OrdinalIgnoreCase))
                {
                    mediaSources.Add(i);
                }
            }

            var streams = new List<StreamInfo>();
            foreach (MediaSourceInfo i in mediaSources)
            {
                StreamInfo streamInfo = BuildAudioItem(i, options);
                if (streamInfo != null)
                {
                    streams.Add(streamInfo);
                }
            }

            foreach (StreamInfo stream in streams)
            {
                stream.DeviceId = options.DeviceId;
                stream.DeviceProfileId = options.Profile.Id;
            }

            return GetOptimalStream(streams, options.GetMaxBitrate(true) ?? 0);
        }

        public StreamInfo BuildVideoItem(VideoOptions options)
        {
            ValidateInput(options);

            var mediaSources = new List<MediaSourceInfo>();
            foreach (MediaSourceInfo i in options.MediaSources)
            {
                if (string.IsNullOrEmpty(options.MediaSourceId) ||
                    string.Equals(i.Id, options.MediaSourceId, StringComparison.OrdinalIgnoreCase))
                {
                    mediaSources.Add(i);
                }
            }

            var streams = new List<StreamInfo>();
            foreach (MediaSourceInfo i in mediaSources)
            {
                var streamInfo = BuildVideoItem(i, options);
                if (streamInfo != null)
                {
                    streams.Add(streamInfo);
                }
            }

            foreach (StreamInfo stream in streams)
            {
                stream.DeviceId = options.DeviceId;
                stream.DeviceProfileId = options.Profile.Id;
            }

            return GetOptimalStream(streams, options.GetMaxBitrate(false) ?? 0);
        }

        private static StreamInfo GetOptimalStream(List<StreamInfo> streams, long maxBitrate)
            => SortMediaSources(streams, maxBitrate).FirstOrDefault();

        private static IOrderedEnumerable<StreamInfo> SortMediaSources(List<StreamInfo> streams, long maxBitrate)
        {
            return streams.OrderBy(i =>
            {
                // Nothing beats direct playing a file
                if (i.PlayMethod == PlayMethod.DirectPlay && i.MediaSource.Protocol == MediaProtocol.File)
                {
                    return 0;
                }

                return 1;
            }).ThenBy(i =>
            {
                switch (i.PlayMethod)
                {
                    // Let's assume direct streaming a file is just as desirable as direct playing a remote url
                    case PlayMethod.DirectStream:
                    case PlayMethod.DirectPlay:
                        return 0;
                    default:
                        return 1;
                }
            }).ThenBy(i =>
            {
                switch (i.MediaSource.Protocol)
                {
                    case MediaProtocol.File:
                        return 0;
                    default:
                        return 1;
                }
            }).ThenBy(i =>
            {
                if (maxBitrate > 0)
                {
                    if (i.MediaSource.Bitrate.HasValue)
                    {
                        return Math.Abs(i.MediaSource.Bitrate.Value - maxBitrate);
                    }
                }

                return 0;
            }).ThenBy(streams.IndexOf);
        }

        private static TranscodeReason GetTranscodeReasonForFailedCondition(ProfileCondition condition)
        {
            switch (condition.Property)
            {
                case ProfileConditionValue.AudioBitrate:
                    return TranscodeReason.AudioBitrateNotSupported;

                case ProfileConditionValue.AudioChannels:
                    return TranscodeReason.AudioChannelsNotSupported;

                case ProfileConditionValue.AudioProfile:
                    return TranscodeReason.AudioProfileNotSupported;

                case ProfileConditionValue.AudioSampleRate:
                    return TranscodeReason.AudioSampleRateNotSupported;

                case ProfileConditionValue.Has64BitOffsets:
                    // TODO
                    return 0;

                case ProfileConditionValue.Height:
                    return TranscodeReason.VideoResolutionNotSupported;

                case ProfileConditionValue.IsAnamorphic:
                    return TranscodeReason.AnamorphicVideoNotSupported;

                case ProfileConditionValue.IsAvc:
                    // TODO
                    return 0;

                case ProfileConditionValue.IsInterlaced:
                    return TranscodeReason.InterlacedVideoNotSupported;

                case ProfileConditionValue.IsSecondaryAudio:
                    return TranscodeReason.SecondaryAudioNotSupported;

                case ProfileConditionValue.NumAudioStreams:
                    // TODO
                    return 0;

                case ProfileConditionValue.NumVideoStreams:
                    // TODO
                    return 0;

                case ProfileConditionValue.PacketLength:
                    // TODO
                    return 0;

                case ProfileConditionValue.RefFrames:
                    return TranscodeReason.RefFramesNotSupported;

                case ProfileConditionValue.VideoBitDepth:
                    return TranscodeReason.VideoBitDepthNotSupported;

                case ProfileConditionValue.AudioBitDepth:
                    return TranscodeReason.AudioBitDepthNotSupported;

                case ProfileConditionValue.VideoBitrate:
                    return TranscodeReason.VideoBitrateNotSupported;

                case ProfileConditionValue.VideoCodecTag:
                    return TranscodeReason.VideoCodecNotSupported;

                case ProfileConditionValue.VideoFramerate:
                    return TranscodeReason.VideoFramerateNotSupported;

                case ProfileConditionValue.VideoLevel:
                    return TranscodeReason.VideoLevelNotSupported;

                case ProfileConditionValue.VideoProfile:
                    return TranscodeReason.VideoProfileNotSupported;

                case ProfileConditionValue.VideoTimestamp:
                    // TODO
                    return 0;

                case ProfileConditionValue.Width:
                    return TranscodeReason.VideoResolutionNotSupported;

                default:
                    return 0;
            }
        }

        public static string NormalizeMediaSourceFormatIntoSingleContainer(string inputContainer, DeviceProfile profile, DlnaProfileType type, DirectPlayProfile playProfile = null)
        {
            if (string.IsNullOrEmpty(inputContainer))
            {
                return null;
            }

            var formats = ContainerProfile.SplitValue(inputContainer);

            if (profile != null)
            {
                var playProfiles = playProfile == null ? profile.DirectPlayProfiles : new[] { playProfile };
                foreach (var format in formats)
                {
                    foreach (var directPlayProfile in playProfiles)
                    {
                        if (directPlayProfile.Type == type
                            && directPlayProfile.SupportsContainer(format))
                        {
                            return format;
                        }
                    }
                }
            }

            return formats[0];
        }

        private StreamInfo BuildAudioItem(MediaSourceInfo item, AudioOptions options)
        {
            StreamInfo playlistItem = new StreamInfo
            {
                ItemId = options.ItemId,
                MediaType = DlnaProfileType.Audio,
                MediaSource = item,
                RunTimeTicks = item.RunTimeTicks,
                Context = options.Context,
                DeviceProfile = options.Profile
            };

            if (options.ForceDirectPlay)
            {
                playlistItem.PlayMethod = PlayMethod.DirectPlay;
                playlistItem.Container = NormalizeMediaSourceFormatIntoSingleContainer(item.Container, options.Profile, DlnaProfileType.Audio);
                return playlistItem;
            }

            if (options.ForceDirectStream)
            {
                playlistItem.PlayMethod = PlayMethod.DirectStream;
                playlistItem.Container = NormalizeMediaSourceFormatIntoSingleContainer(item.Container, options.Profile, DlnaProfileType.Audio);
                return playlistItem;
            }

            var audioStream = item.GetDefaultAudioStream(null);

            var directPlayInfo = GetAudioDirectPlayProfile(item, audioStream, options);

            var directPlayMethod = directPlayInfo.PlayMethod;
            var transcodeReasons = directPlayInfo.TranscodeReasons;

            int? inputAudioChannels = audioStream?.Channels;
            int? inputAudioBitrate = audioStream?.BitDepth;
            int? inputAudioSampleRate = audioStream?.SampleRate;
            int? inputAudioBitDepth = audioStream?.BitDepth;

            if (directPlayMethod.HasValue)
            {
                var profile = options.Profile;
                var audioFailureConditions = GetProfileConditionsForAudio(profile.CodecProfiles, item.Container, audioStream?.Codec, inputAudioChannels, inputAudioBitrate, inputAudioSampleRate, inputAudioBitDepth, true);
                var audioFailureReasons = AggregateFailureConditions(item, profile, "AudioCodecProfile", audioFailureConditions);
                transcodeReasons |= audioFailureReasons;

                if (audioFailureReasons == 0)
                {
                    playlistItem.PlayMethod = directPlayMethod.Value;
                    playlistItem.Container = NormalizeMediaSourceFormatIntoSingleContainer(item.Container, options.Profile, DlnaProfileType.Audio, directPlayInfo.Profile);

                    return playlistItem;
                }
            }

            TranscodingProfile transcodingProfile = null;
            foreach (var i in options.Profile.TranscodingProfiles)
            {
                if (i.Type == playlistItem.MediaType
                    && i.Context == options.Context
                    && _transcoderSupport.CanEncodeToAudioCodec(i.AudioCodec ?? i.Container))
                {
                    transcodingProfile = i;
                    break;
                }
            }

            if (transcodingProfile != null)
            {
                if (!item.SupportsTranscoding)
                {
                    return null;
                }

                SetStreamInfoOptionsFromTranscodingProfile(item, playlistItem, transcodingProfile);

                var audioTranscodingConditions = GetProfileConditionsForAudio(options.Profile.CodecProfiles, transcodingProfile.Container, transcodingProfile.AudioCodec, inputAudioChannels, inputAudioBitrate, inputAudioSampleRate, inputAudioBitDepth, false).ToArray();
                ApplyTranscodingConditions(playlistItem, audioTranscodingConditions, null, true, true);

                // Honor requested max channels
                playlistItem.GlobalMaxAudioChannels = options.MaxAudioChannels;

                var configuredBitrate = options.GetMaxBitrate(true);

                long transcodingBitrate = options.AudioTranscodingBitrate ??
                    (options.Context == EncodingContext.Streaming ? options.Profile.MusicStreamingTranscodingBitrate : null) ??
                    configuredBitrate ??
                    128000;

                if (configuredBitrate.HasValue)
                {
                    transcodingBitrate = Math.Min(configuredBitrate.Value, transcodingBitrate);
                }

                var longBitrate = Math.Min(transcodingBitrate, playlistItem.AudioBitrate ?? transcodingBitrate);
                playlistItem.AudioBitrate = longBitrate > int.MaxValue ? int.MaxValue : Convert.ToInt32(longBitrate);
            }

            playlistItem.TranscodeReasons = transcodeReasons;
            return playlistItem;
        }

        private (DirectPlayProfile Profile, PlayMethod? PlayMethod, TranscodeReason TranscodeReasons) GetAudioDirectPlayProfile(MediaSourceInfo item, MediaStream audioStream, AudioOptions options)
        {
            var directPlayProfile = options.Profile.DirectPlayProfiles
                .FirstOrDefault(x => x.Type == DlnaProfileType.Audio && IsAudioDirectPlaySupported(x, item, audioStream));

            if (directPlayProfile == null)
            {
                _logger.LogDebug(
                    "Profile: {0}, No audio direct play profiles found for {1} with codec {2}",
                    options.Profile.Name ?? "Unknown Profile",
                    item.Path ?? "Unknown path",
                    audioStream.Codec ?? "Unknown codec");

                return (null, null, GetTranscodeReasonsFromDirectPlayProfile(item, null, audioStream, options.Profile.DirectPlayProfiles));
            }

            var playMethods = new List<PlayMethod>();
            TranscodeReason transcodeReasons = 0;

            // The profile describes what the device supports
            // If device requirements are satisfied then allow both direct stream and direct play
            if (item.SupportsDirectPlay)
            {
                if (IsItemBitrateEligibleForDirectPlay(item, options.GetMaxBitrate(true) ?? 0, PlayMethod.DirectPlay))
                {
                    if (options.EnableDirectPlay)
                    {
                        return (directPlayProfile, PlayMethod.DirectPlay, 0);
                    }
                }
                else
                {
                    transcodeReasons |= TranscodeReason.ContainerBitrateExceedsLimit;
                }
            }

            // While options takes the network and other factors into account. Only applies to direct stream
            if (item.SupportsDirectStream)
            {
                if (IsItemBitrateEligibleForDirectPlay(item, options.GetMaxBitrate(true) ?? 0, PlayMethod.DirectStream))
                {
                    if (options.EnableDirectStream)
                    {
                        return (directPlayProfile, PlayMethod.DirectStream, transcodeReasons);
                    }
                }
                else
                {
                    transcodeReasons |= TranscodeReason.ContainerBitrateExceedsLimit;
                }
            }

            return (directPlayProfile, null, transcodeReasons);
        }

        private static TranscodeReason GetTranscodeReasonsFromDirectPlayProfile(MediaSourceInfo item, MediaStream videoStream, MediaStream audioStream, IEnumerable<DirectPlayProfile> directPlayProfiles)
        {
            var mediaType = videoStream == null ? DlnaProfileType.Audio : DlnaProfileType.Video;

            var containerSupported = false;
            var audioSupported = false;
            var videoSupported = false;
            TranscodeReason reasons = 0;

            foreach (var profile in directPlayProfiles)
            {
                // Check container type
                if (profile.Type == mediaType && profile.SupportsContainer(item.Container))
                {
                    containerSupported = true;

                    videoSupported = videoStream != null && profile.SupportsVideoCodec(videoStream.Codec);

                    audioSupported = audioStream != null && profile.SupportsAudioCodec(audioStream.Codec);

                    if (videoSupported && audioSupported)
                    {
                        break;
                    }
                }
            }

            var list = new List<TranscodeReason>();
            if (!containerSupported)
            {
                reasons |= TranscodeReason.ContainerNotSupported;
            }

            if (videoStream != null && !videoSupported)
            {
                reasons |= TranscodeReason.VideoCodecNotSupported;
            }

            if (audioStream != null && !audioSupported)
            {
                reasons |= TranscodeReason.AudioCodecNotSupported;
            }

            return reasons;
        }

        private static int? GetDefaultSubtitleStreamIndex(MediaSourceInfo item, SubtitleProfile[] subtitleProfiles)
        {
            int highestScore = -1;

            foreach (var stream in item.MediaStreams)
            {
                if (stream.Type == MediaStreamType.Subtitle
                    && stream.Score.HasValue
                    && stream.Score.Value > highestScore)
                {
                    highestScore = stream.Score.Value;
                }
            }

            var topStreams = new List<MediaStream>();
            foreach (var stream in item.MediaStreams)
            {
                if (stream.Type == MediaStreamType.Subtitle && stream.Score.HasValue && stream.Score.Value == highestScore)
                {
                    topStreams.Add(stream);
                }
            }

            // If multiple streams have an equal score, try to pick the most efficient one
            if (topStreams.Count > 1)
            {
                foreach (var stream in topStreams)
                {
                    foreach (var profile in subtitleProfiles)
                    {
                        if (profile.Method == SubtitleDeliveryMethod.External && string.Equals(profile.Format, stream.Codec, StringComparison.OrdinalIgnoreCase))
                        {
                            return stream.Index;
                        }
                    }
                }
            }

            // If no optimization panned out, just use the original default
            return item.DefaultSubtitleStreamIndex;
        }

        private static void SetStreamInfoOptionsFromTranscodingProfile(MediaSourceInfo item, StreamInfo playlistItem, TranscodingProfile transcodingProfile)
        {
            var container = transcodingProfile.Container;
            var protocol = transcodingProfile.Protocol;

            item.TranscodingContainer = container;
            item.TranscodingSubProtocol = protocol;

            if (playlistItem.PlayMethod == PlayMethod.Transcode)
            {
                playlistItem.Container = container;
                playlistItem.SubProtocol = protocol;
            }

            playlistItem.TranscodeSeekInfo = transcodingProfile.TranscodeSeekInfo;
            if (!string.IsNullOrEmpty(transcodingProfile.MaxAudioChannels)
                && int.TryParse(transcodingProfile.MaxAudioChannels, NumberStyles.Any, CultureInfo.InvariantCulture, out int transcodingMaxAudioChannels))
            {
                playlistItem.TranscodingMaxAudioChannels = transcodingMaxAudioChannels;
            }

            playlistItem.EstimateContentLength = transcodingProfile.EstimateContentLength;

            playlistItem.CopyTimestamps = transcodingProfile.CopyTimestamps;
            playlistItem.EnableSubtitlesInManifest = transcodingProfile.EnableSubtitlesInManifest;
            playlistItem.EnableMpegtsM2TsMode = transcodingProfile.EnableMpegtsM2TsMode;

            playlistItem.BreakOnNonKeyFrames = transcodingProfile.BreakOnNonKeyFrames;

            if (transcodingProfile.MinSegments > 0)
            {
                playlistItem.MinSegments = transcodingProfile.MinSegments;
            }

            if (transcodingProfile.SegmentLength > 0)
            {
                playlistItem.SegmentLength = transcodingProfile.SegmentLength;
            }
        }

        private static void SetStreamInfoOptionsFromDirectPlayProfile(VideoOptions options, MediaSourceInfo item, StreamInfo playlistItem, DirectPlayProfile directPlayProfile)
        {
            var container = NormalizeMediaSourceFormatIntoSingleContainer(item.Container, options.Profile, DlnaProfileType.Video, directPlayProfile);
            var protocol = "http";

            item.TranscodingContainer = container;
            item.TranscodingSubProtocol = protocol;

            playlistItem.Container = container;
            playlistItem.SubProtocol = protocol;

            playlistItem.VideoCodecs = new[] { item.VideoStream.Codec };
            playlistItem.AudioCodecs = ContainerProfile.SplitValue(directPlayProfile.AudioCodec);
        }

        private StreamInfo BuildVideoItem(MediaSourceInfo item, VideoOptions options)
        {
            if (item == null)
            {
                throw new ArgumentNullException(nameof(item));
            }

            StreamInfo playlistItem = new StreamInfo
            {
                ItemId = options.ItemId,
                MediaType = DlnaProfileType.Video,
                MediaSource = item,
                RunTimeTicks = item.RunTimeTicks,
                Context = options.Context,
                DeviceProfile = options.Profile
            };

            playlistItem.SubtitleStreamIndex = options.SubtitleStreamIndex ?? GetDefaultSubtitleStreamIndex(item, options.Profile.SubtitleProfiles);
            var subtitleStream = playlistItem.SubtitleStreamIndex.HasValue ? item.GetMediaStream(MediaStreamType.Subtitle, playlistItem.SubtitleStreamIndex.Value) : null;

            var audioStream = item.GetDefaultAudioStream(options.AudioStreamIndex ?? item.DefaultAudioStreamIndex);
            if (audioStream != null)
            {
                playlistItem.AudioStreamIndex = audioStream.Index;
            }

            // Collect candidate audio streams
            IEnumerable<MediaStream> candidateAudioStreams = audioStream == null ? Array.Empty<MediaStream>() : new[] { audioStream };
            if (!options.AudioStreamIndex.HasValue || options.AudioStreamIndex < 0)
            {
                if (audioStream?.IsDefault == true)
                {
                    candidateAudioStreams = item.MediaStreams.Where(stream => stream.Type == MediaStreamType.Audio && stream.IsDefault);
                }
                else
                {
                    candidateAudioStreams = item.MediaStreams.Where(stream => stream.Type == MediaStreamType.Audio && stream.Language == audioStream?.Language);
                }
            }

            candidateAudioStreams = candidateAudioStreams.ToArray();

            var videoStream = item.VideoStream;

            var directPlayEligibilityResult = IsEligibleForDirectPlay(item, options.GetMaxBitrate(false) ?? 0, options, PlayMethod.DirectPlay);
            var directStreamEligibilityResult = IsEligibleForDirectPlay(item, options.GetMaxBitrate(false) ?? 0, options, PlayMethod.DirectStream);
            bool isEligibleForDirectPlay = options.EnableDirectPlay && (options.ForceDirectPlay || directPlayEligibilityResult == 0);
            bool isEligibleForDirectStream = options.EnableDirectStream && (options.ForceDirectStream || directPlayEligibilityResult == 0);
            var transcodeReasons = directPlayEligibilityResult | directStreamEligibilityResult;

            _logger.LogDebug(
                "Profile: {0}, Path: {1}, isEligibleForDirectPlay: {2}, isEligibleForDirectStream: {3}",
                options.Profile.Name ?? "Unknown Profile",
                item.Path ?? "Unknown path",
                isEligibleForDirectPlay,
                isEligibleForDirectStream);

            DirectPlayProfile directPlayProfile = null;
            if (isEligibleForDirectPlay || isEligibleForDirectStream)
            {
                // See if it can be direct played
                var directPlayInfo = GetVideoDirectPlayProfile(options, item, videoStream, audioStream, candidateAudioStreams, subtitleStream, isEligibleForDirectPlay, isEligibleForDirectStream);
                var directPlay = directPlayInfo.PlayMethod;
                transcodeReasons |= directPlayInfo.TranscodeReasons;

                if (directPlay != null)
                {
                    directPlayProfile = directPlayInfo.Profile;
                    playlistItem.PlayMethod = directPlay.Value;
                    playlistItem.Container = NormalizeMediaSourceFormatIntoSingleContainer(item.Container, options.Profile, DlnaProfileType.Video, directPlayProfile);
                    playlistItem.VideoCodecs = new[] { videoStream.Codec };

                    if (directPlay == PlayMethod.DirectPlay)
                    {
                        playlistItem.SubProtocol = "http";

                        var audioStreamIndex = directPlayInfo.AudioStreamIndex ?? audioStream?.Index;
                        if (audioStreamIndex.HasValue)
                        {
                            playlistItem.AudioStreamIndex = audioStreamIndex;
                            playlistItem.AudioCodecs = new[] { item.GetMediaStream(MediaStreamType.Audio, audioStreamIndex.Value)?.Codec };
                        }
                    }
                    else if (directPlay == PlayMethod.DirectStream)
                    {
                        playlistItem.AudioStreamIndex = audioStream?.Index;
                        if (audioStream != null)
                        {
                            playlistItem.AudioCodecs = ContainerProfile.SplitValue(directPlayProfile.AudioCodec);
                        }

                        SetStreamInfoOptionsFromDirectPlayProfile(options, item, playlistItem, directPlayProfile);
                        BuildStreamVideoItem(playlistItem, options, item, videoStream, audioStream, candidateAudioStreams, directPlayProfile.Container, directPlayProfile.VideoCodec, directPlayProfile.AudioCodec);
                    }

                    if (subtitleStream != null)
                    {
                        var subtitleProfile = GetSubtitleProfile(item, subtitleStream, options.Profile.SubtitleProfiles, directPlay.Value, _transcoderSupport, directPlayProfile.Container, null);

                        playlistItem.SubtitleDeliveryMethod = subtitleProfile.Method;
                        playlistItem.SubtitleFormat = subtitleProfile.Format;
                    }
                }

                _logger.LogDebug(
                    "DirectPlay Result for Profile: {0}, Path: {1}, PlayMethod: {2}, AudioStreamIndex: {3}, SubtitleStreamIndex: {4}, Reasons: {5}",
                    options.Profile.Name ?? "Anonymous Profile",
                    item.Path ?? "Unknown path",
                    directPlayInfo.PlayMethod,
                    directPlayInfo.AudioStreamIndex ?? audioStream?.Index,
                    playlistItem.SubtitleStreamIndex,
                    directPlayInfo.TranscodeReasons);
            }

            playlistItem.TranscodeReasons = transcodeReasons;

            if (playlistItem.PlayMethod != PlayMethod.DirectStream || !options.EnableDirectStream)
            {
                // Can't direct play, find the transcoding profile
                // If we do this for direct-stream we will overwrite the info
                var transcodingProfile = GetVideoTranscodeProfile(item, options, videoStream, audioStream, candidateAudioStreams, subtitleStream, playlistItem);
                if (transcodingProfile != null)
                {
                    SetStreamInfoOptionsFromTranscodingProfile(item, playlistItem, transcodingProfile);

                    BuildStreamVideoItem(playlistItem, options, item, videoStream, audioStream, candidateAudioStreams, transcodingProfile.Container, transcodingProfile.VideoCodec, transcodingProfile.AudioCodec);

                    if (subtitleStream != null)
                    {
                        var subtitleProfile = GetSubtitleProfile(item, subtitleStream, options.Profile.SubtitleProfiles, PlayMethod.Transcode, _transcoderSupport, transcodingProfile.Container, transcodingProfile.Protocol);

                        playlistItem.SubtitleDeliveryMethod = subtitleProfile.Method;
                        playlistItem.SubtitleFormat = subtitleProfile.Format;
                        playlistItem.SubtitleCodecs = new[] { subtitleProfile.Format };
                    }

                    if (playlistItem.PlayMethod != PlayMethod.DirectPlay)
                    {
                        playlistItem.PlayMethod = PlayMethod.Transcode;

                        if ((playlistItem.TranscodeReasons & (VideoReasons | TranscodeReason.ContainerBitrateExceedsLimit)) != 0)
                        {
                            ApplyTranscodingConditions(playlistItem, transcodingProfile.Conditions, null, true, true);
                        }
                    }
                }
            }

            _logger.LogInformation(
                "StreamBuilder.BuildVideoItem( Profile={0}, Path={1}, AudioStreamIndex={2}, SubtitleStreamIndex={3} ) => ( PlayMethod={4}, TranscodeReason={5} ) {6}",
                options.Profile.Name ?? "Anonymous Profile",
                item.Path ?? "Unknown path",
                options.AudioStreamIndex,
                options.SubtitleStreamIndex,
                playlistItem.PlayMethod,
                playlistItem.TranscodeReasons,
                playlistItem.ToUrl("media:", "<token>"));

            item.Container = NormalizeMediaSourceFormatIntoSingleContainer(item.Container, options.Profile, DlnaProfileType.Video, directPlayProfile);
            return playlistItem;
        }

        private TranscodingProfile GetVideoTranscodeProfile(MediaSourceInfo item, VideoOptions options, MediaStream videoStream, MediaStream audioStream, IEnumerable<MediaStream> candidateAudioStreams, MediaStream subtitleStream, StreamInfo playlistItem)
        {
            if (!(item.SupportsTranscoding || item.SupportsDirectStream))
            {
                return null;
            }

            var transcodingProfiles = options.Profile.TranscodingProfiles
                .Where(i => i.Type == playlistItem.MediaType && i.Context == options.Context);

            if (options.AllowVideoStreamCopy)
            {
                // prefer direct copy profile
                float videoFramerate = videoStream == null ? 0 : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate ?? 0;
                TransportStreamTimestamp? timestamp = videoStream == null ? TransportStreamTimestamp.None : item.Timestamp;
                int? numAudioStreams = item.GetStreamCount(MediaStreamType.Audio);
                int? numVideoStreams = item.GetStreamCount(MediaStreamType.Video);

                transcodingProfiles = transcodingProfiles.ToLookup(transcodingProfile =>
                {
                    var videoCodecs = ContainerProfile.SplitValue(transcodingProfile.VideoCodec);

                    if (ContainerProfile.ContainsContainer(videoCodecs, item.VideoStream?.Codec))
                    {
                        var videoCodec = transcodingProfile.VideoCodec;
                        var container = transcodingProfile.Container;
                        var appliedVideoConditions = options.Profile.CodecProfiles
                            .Where(i => i.Type == CodecType.Video &&
                                i.ContainsAnyCodec(videoCodec, container))
                            .Select(i =>
                                i.ApplyConditions.Any(applyCondition => ConditionProcessor.IsVideoConditionSatisfied(applyCondition, videoStream?.Width, videoStream?.Height, videoStream?.BitDepth, videoStream?.BitRate, videoStream?.Profile, videoStream?.Level, videoFramerate, videoStream?.PacketLength, timestamp, videoStream?.IsAnamorphic, videoStream?.IsInterlaced, videoStream?.RefFrames, numVideoStreams, numAudioStreams, videoStream?.CodecTag, videoStream?.IsAVC)));
                        var conditionsSatisfied = !appliedVideoConditions.Any() || !appliedVideoConditions.Any(satisfied => !satisfied);
                        return conditionsSatisfied ? 1 : 2;
                    }

                    return 3;
                })
                .OrderBy(lookup => lookup.Key)
                .SelectMany(lookup => lookup);
            }

            return transcodingProfiles.FirstOrDefault();
        }

        private void BuildStreamVideoItem(StreamInfo playlistItem, VideoOptions options, MediaSourceInfo item, MediaStream videoStream, MediaStream audioStream, IEnumerable<MediaStream> candidateAudioStreams, string container, string videoCodec, string audioCodec)
        {
            // prefer matching video codecs
            var videoCodecs = ContainerProfile.SplitValue(videoCodec);
            var directVideoCodec = ContainerProfile.ContainsContainer(videoCodecs, videoStream?.Codec) ? videoStream?.Codec : null;
            playlistItem.VideoCodecs = directVideoCodec != null ? new[] { directVideoCodec } : videoCodecs;

            // copy video codec options as a starting point, this applies to transcode and direct-stream
            playlistItem.MaxFramerate = videoStream?.AverageFrameRate;
            var qualifier = videoStream?.Codec;
            if (videoStream?.Level != null)
            {
                playlistItem.SetOption(qualifier, "level", videoStream.Level.Value.ToString(CultureInfo.InvariantCulture));
            }

            if (videoStream?.BitDepth != null)
            {
                playlistItem.SetOption(qualifier, "videobitdepth", videoStream.BitDepth.Value.ToString(CultureInfo.InvariantCulture));
            }

            if (!string.IsNullOrEmpty(videoStream?.Profile))
            {
                playlistItem.SetOption(qualifier, "profile", videoStream.Profile.ToLowerInvariant());
            }

            if (videoStream != null && videoStream.Level != 0)
            {
                playlistItem.SetOption(qualifier, "level", videoStream.Level.ToString());
            }

            // prefer matching audio codecs, could do better here
            var audioCodecs = ContainerProfile.SplitValue(audioCodec);
            var directAudioStream = candidateAudioStreams.FirstOrDefault(stream => ContainerProfile.ContainsContainer(audioCodecs, stream.Codec));
            playlistItem.AudioCodecs = audioCodecs;
            if (directAudioStream != null)
            {
                audioStream = directAudioStream;
                playlistItem.AudioStreamIndex = audioStream.Index;
                playlistItem.AudioCodecs = new[] { audioStream.Codec };

                // copy matching audio codec options
                playlistItem.AudioSampleRate = audioStream.SampleRate;
                playlistItem.SetOption(qualifier, "audiochannels", audioStream.Channels.ToString());

                if (!string.IsNullOrEmpty(audioStream.Profile))
                {
                    playlistItem.SetOption(audioStream.Codec, "profile", audioStream.Profile.ToLowerInvariant());
                }

                if (audioStream.Level != 0)
                {
                    playlistItem.SetOption(audioStream.Codec, "level", audioStream.Level.ToString());
                }
            }

            int? width = videoStream?.Width;
            int? height = videoStream?.Height;
            int? bitDepth = videoStream?.BitDepth;
            int? videoBitrate = videoStream?.BitRate;
            double? videoLevel = videoStream?.Level;
            string videoProfile = videoStream?.Profile;
            float videoFramerate = videoStream == null ? 0 : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate ?? 0;
            bool? isAnamorphic = videoStream?.IsAnamorphic;
            bool? isInterlaced = videoStream?.IsInterlaced;
            string videoCodecTag = videoStream?.CodecTag;
            bool? isAvc = videoStream?.IsAVC;

            TransportStreamTimestamp? timestamp = videoStream == null ? TransportStreamTimestamp.None : item.Timestamp;
            int? packetLength = videoStream?.PacketLength;
            int? refFrames = videoStream?.RefFrames;

            int? numAudioStreams = item.GetStreamCount(MediaStreamType.Audio);
            int? numVideoStreams = item.GetStreamCount(MediaStreamType.Video);

            var appliedVideoConditions = options.Profile.CodecProfiles
                .Where(i => i.Type == CodecType.Video &&
                    i.ContainsAnyCodec(videoCodec, container) &&
                    i.ApplyConditions.Any(applyCondition => ConditionProcessor.IsVideoConditionSatisfied(applyCondition, width, height, bitDepth, videoBitrate, videoProfile, videoLevel, videoFramerate, packetLength, timestamp, isAnamorphic, isInterlaced, refFrames, numVideoStreams, numAudioStreams, videoCodecTag, isAvc)));
            var isFirstAppliedCodecProfile = true;
            foreach (var i in appliedVideoConditions)
            {
                var transcodingVideoCodecs = ContainerProfile.SplitValue(videoCodec);
                foreach (var transcodingVideoCodec in transcodingVideoCodecs)
                {
                    if (i.ContainsAnyCodec(transcodingVideoCodec, container))
                    {
                        ApplyTranscodingConditions(playlistItem, i.Conditions, transcodingVideoCodec, true, isFirstAppliedCodecProfile);
                        isFirstAppliedCodecProfile = false;
                        continue;
                    }
                }
            }

            // Honor requested max channels
            playlistItem.GlobalMaxAudioChannels = options.MaxAudioChannels;

            int audioBitrate = GetAudioBitrate(options.GetMaxBitrate(false) ?? 0, playlistItem.TargetAudioCodec, audioStream, playlistItem);
            playlistItem.AudioBitrate = Math.Min(playlistItem.AudioBitrate ?? audioBitrate, audioBitrate);

            bool? isSecondaryAudio = audioStream == null ? null : item.IsSecondaryAudio(audioStream);
            int? inputAudioBitrate = audioStream == null ? null : audioStream.BitRate;
            int? audioChannels = audioStream == null ? null : audioStream.Channels;
            string audioProfile = audioStream == null ? null : audioStream.Profile;
            int? inputAudioSampleRate = audioStream == null ? null : audioStream.SampleRate;
            int? inputAudioBitDepth = audioStream == null ? null : audioStream.BitDepth;

            var appliedAudioConditions = options.Profile.CodecProfiles
                .Where(i => i.Type == CodecType.Video &&
                    i.ContainsAnyCodec(audioCodec, container) &&
                    i.ApplyConditions.Any(applyCondition => ConditionProcessor.IsVideoAudioConditionSatisfied(applyCondition, audioChannels, inputAudioBitrate, inputAudioSampleRate, inputAudioBitDepth, audioProfile, isSecondaryAudio)));
            isFirstAppliedCodecProfile = true;
            foreach (var i in appliedAudioConditions)
            {
                var transcodingAudioCodecs = ContainerProfile.SplitValue(audioCodec);
                foreach (var transcodingAudioCodec in transcodingAudioCodecs)
                {
                    if (i.ContainsAnyCodec(transcodingAudioCodec, container))
                    {
                        ApplyTranscodingConditions(playlistItem, i.Conditions, transcodingAudioCodec, true, isFirstAppliedCodecProfile);
                        isFirstAppliedCodecProfile = false;
                        break;
                    }
                }
            }

            var maxBitrateSetting = options.GetMaxBitrate(false);
            // Honor max rate
            if (maxBitrateSetting.HasValue)
            {
                var availableBitrateForVideo = maxBitrateSetting.Value;

                if (playlistItem.AudioBitrate.HasValue)
                {
                    availableBitrateForVideo -= playlistItem.AudioBitrate.Value;
                }

                // Make sure the video bitrate is lower than bitrate settings but at least 64k
                // Don't use Math.Clamp as availableBitrateForVideo can be lower then 64k.
                var currentValue = playlistItem.VideoBitrate ?? availableBitrateForVideo;
                playlistItem.VideoBitrate = Math.Max(Math.Min(availableBitrateForVideo, currentValue), 64_000);
            }

            _logger.LogDebug(
                "Transcode Result for Profile: {Profile}, Path: {Path}, PlayMethod: {PlayMethod}, AudioStreamIndex: {AudioStreamIndex}, SubtitleStreamIndex: {SubtitleStreamIndex}, Reasons: {TranscodeReason}",
                options.Profile?.Name ?? "Anonymous Profile",
                item.Path ?? "Unknown path",
                playlistItem?.PlayMethod,
                audioStream?.Index,
                playlistItem?.SubtitleStreamIndex,
                playlistItem?.TranscodeReasons);
        }

        private static int GetDefaultAudioBitrate(string audioCodec, int? audioChannels)
        {
            if (!string.IsNullOrEmpty(audioCodec))
            {
                // Default to a higher bitrate for stream copy
                if (string.Equals(audioCodec, "aac", StringComparison.OrdinalIgnoreCase)
                    || string.Equals(audioCodec, "mp3", StringComparison.OrdinalIgnoreCase)
                    || string.Equals(audioCodec, "ac3", StringComparison.OrdinalIgnoreCase)
                    || string.Equals(audioCodec, "eac3", StringComparison.OrdinalIgnoreCase))
                {
                    if ((audioChannels ?? 0) < 2)
                    {
                        return 128000;
                    }

                    return (audioChannels ?? 0) >= 6 ? 640000 : 384000;
                }

                if (string.Equals(audioCodec, "flac", StringComparison.OrdinalIgnoreCase)
                    || string.Equals(audioCodec, "alac", StringComparison.OrdinalIgnoreCase))
                {
                    if ((audioChannels ?? 0) < 2)
                    {
                        return 768000;
                    }

                    return (audioChannels ?? 0) >= 6 ? 3584000 : 1536000;
                }
            }

            return 192000;
        }

        private static int GetAudioBitrate(long maxTotalBitrate, string[] targetAudioCodecs, MediaStream audioStream, StreamInfo item)
        {
            string targetAudioCodec = targetAudioCodecs.Length == 0 ? null : targetAudioCodecs[0];

            int? targetAudioChannels = item.GetTargetAudioChannels(targetAudioCodec);

            int defaultBitrate;
            int encoderAudioBitrateLimit = int.MaxValue;

            if (audioStream == null)
            {
                defaultBitrate = 192000;
            }
            else
            {
                if (targetAudioChannels.HasValue
                    && audioStream.Channels.HasValue
                    && audioStream.Channels.Value > targetAudioChannels.Value)
                {
                    // Reduce the bitrate if we're downmixing.
                    defaultBitrate = GetDefaultAudioBitrate(targetAudioCodec, targetAudioChannels);
                }
                else if (targetAudioChannels.HasValue
                         && audioStream.Channels.HasValue
                         && audioStream.Channels.Value <= targetAudioChannels.Value
                         && !string.IsNullOrEmpty(audioStream.Codec)
                         && targetAudioCodecs != null
                         && targetAudioCodecs.Length > 0
                         && !Array.Exists(targetAudioCodecs, elem => string.Equals(audioStream.Codec, elem, StringComparison.OrdinalIgnoreCase)))
                {
                    // Shift the bitrate if we're transcoding to a different audio codec.
                    defaultBitrate = GetDefaultAudioBitrate(targetAudioCodec, audioStream.Channels.Value);
                }
                else
                {
                    defaultBitrate = audioStream.BitRate ?? GetDefaultAudioBitrate(targetAudioCodec, targetAudioChannels);
                }

                // Seeing webm encoding failures when source has 1 audio channel and 22k bitrate.
                // Any attempts to transcode over 64k will fail
                if (audioStream.Channels == 1
                    && (audioStream.BitRate ?? 0) < 64000)
                {
                    encoderAudioBitrateLimit = 64000;
                }
            }

            if (maxTotalBitrate > 0)
            {
                defaultBitrate = Math.Min(GetMaxAudioBitrateForTotalBitrate(maxTotalBitrate), defaultBitrate);
            }

            return Math.Min(defaultBitrate, encoderAudioBitrateLimit);
        }

        private static int GetMaxAudioBitrateForTotalBitrate(long totalBitrate)
        {
            if (totalBitrate <= 640000)
            {
                return 128000;
            }
            else if (totalBitrate <= 2000000)
            {
                return 384000;
            }
            else if (totalBitrate <= 3000000)
            {
                return 448000;
            }
            else if (totalBitrate <= 4000000)
            {
                return 640000;
            }
            else if (totalBitrate <= 5000000)
            {
                return 768000;
            }
            else if (totalBitrate <= 10000000)
            {
                return 1536000;
            }
            else if (totalBitrate <= 15000000)
            {
                return 2304000;
            }
            else if (totalBitrate <= 20000000)
            {
                return 3584000;
            }

            return 7168000;
        }

        private (DirectPlayProfile Profile, PlayMethod? PlayMethod, int? AudioStreamIndex, TranscodeReason TranscodeReasons) GetVideoDirectPlayProfile(
            VideoOptions options,
            MediaSourceInfo mediaSource,
            MediaStream videoStream,
            MediaStream audioStream,
            IEnumerable<MediaStream> candidateAudioStreams,
            MediaStream subtitleStream,
            bool isEligibleForDirectPlay,
            bool isEligibleForDirectStream)
        {
            if (options.ForceDirectPlay)
            {
                return (null, PlayMethod.DirectPlay, audioStream?.Index, 0);
            }

            if (options.ForceDirectStream)
            {
                return (null, PlayMethod.DirectStream, audioStream?.Index, 0);
            }

            DeviceProfile profile = options.Profile;
            string container = mediaSource.Container;

            // video
            int? width = videoStream?.Width;
            int? height = videoStream?.Height;
            int? bitDepth = videoStream?.BitDepth;
            int? videoBitrate = videoStream?.BitRate;
            double? videoLevel = videoStream?.Level;
            string videoProfile = videoStream?.Profile;
            float videoFramerate = videoStream == null ? 0 : videoStream.AverageFrameRate ?? videoStream.AverageFrameRate ?? 0;
            bool? isAnamorphic = videoStream?.IsAnamorphic;
            bool? isInterlaced = videoStream?.IsInterlaced;
            string videoCodecTag = videoStream?.CodecTag;
            bool? isAvc = videoStream?.IsAVC;
            // audio
            var defaultLanguage = audioStream?.Language ?? string.Empty;
            var defaultMarked = audioStream?.IsDefault ?? false;

            TransportStreamTimestamp? timestamp = videoStream == null ? TransportStreamTimestamp.None : mediaSource.Timestamp;
            int? packetLength = videoStream?.PacketLength;
            int? refFrames = videoStream?.RefFrames;

            int? numAudioStreams = mediaSource.GetStreamCount(MediaStreamType.Audio);
            int? numVideoStreams = mediaSource.GetStreamCount(MediaStreamType.Video);

            var checkVideoConditions = (ProfileCondition[] conditions) =>
                conditions.Where(applyCondition => !ConditionProcessor.IsVideoConditionSatisfied(applyCondition, width, height, bitDepth, videoBitrate, videoProfile, videoLevel, videoFramerate, packetLength, timestamp, isAnamorphic, isInterlaced, refFrames, numVideoStreams, numAudioStreams, videoCodecTag, isAvc));

            // Check container conditions
            var containerProfileReasons = AggregateFailureConditions(
                mediaSource,
                profile,
                "VideoCodecProfile",
                profile.ContainerProfiles
                    .Where(containerProfile => containerProfile.Type == DlnaProfileType.Video && containerProfile.ContainsContainer(container))
                    .SelectMany(containerProfile => checkVideoConditions(containerProfile.Conditions)));

            // Check video conditions
            var videoCodecProfileReasons = AggregateFailureConditions(
                mediaSource,
                profile,
                "VideoCodecProfile",
                profile.CodecProfiles
                    .Where(codecProfile => codecProfile.Type == CodecType.Video && codecProfile.ContainsAnyCodec(videoStream?.Codec, container))
                    .SelectMany(codecProfile =>
                    {
                        var failedApplyConditions = checkVideoConditions(codecProfile.ApplyConditions);
                        if (!failedApplyConditions.Any())
                        {
                            return Array.Empty<ProfileCondition>();
                        }

                        var failedConditions = checkVideoConditions(codecProfile.Conditions);
                        return failedApplyConditions.Concat(failedConditions);
                    }));

            // Check audiocandidates profile conditions
            var audioStreamMatches = candidateAudioStreams.ToDictionary(s => s, audioStream => CheckVideoAudioStreamDirectPlay(options, mediaSource, container, audioStream, defaultLanguage, defaultMarked));

            TranscodeReason subtitleProfileReasons = 0;
            if (subtitleStream != null)
            {
                var subtitleProfile = GetSubtitleProfile(mediaSource, subtitleStream, options.Profile.SubtitleProfiles, PlayMethod.DirectPlay, _transcoderSupport, container, null);

                if (subtitleProfile.Method != SubtitleDeliveryMethod.Drop
                    && subtitleProfile.Method != SubtitleDeliveryMethod.External
                    && subtitleProfile.Method != SubtitleDeliveryMethod.Embed)
                {
                    _logger.LogDebug("Not eligible for {0} due to unsupported subtitles", PlayMethod.DirectPlay);
                    subtitleProfileReasons |= TranscodeReason.SubtitleCodecNotSupported;
                }
            }

            var rankings = new[] { VideoReasons, AudioReasons, ContainerReasons };
            var rank = (ref TranscodeReason a) =>
                {
                    var index = 1;
                    foreach (var flag in rankings)
                    {
                        var reason = a & flag;
                        if (reason != 0)
                        {
                            a = reason;
                            return index;
                        }

                        index++;
                    }

                    return index;
                };

            // Check DirectPlay profiles to see if it can be direct played
            var analyzedProfiles = profile.DirectPlayProfiles
                .Where(directPlayProfile => directPlayProfile.Type == DlnaProfileType.Video)
                .Select((directPlayProfile, order) =>
                {
                    TranscodeReason directPlayProfileReasons = 0;
                    TranscodeReason audioCodecProfileReasons = 0;

                    // Check container type
                    if (!directPlayProfile.SupportsContainer(container))
                    {
                        directPlayProfileReasons |= TranscodeReason.ContainerNotSupported;
                    }

                    // Check video codec
                    string videoCodec = videoStream?.Codec;
                    if (!directPlayProfile.SupportsVideoCodec(videoCodec))
                    {
                        directPlayProfileReasons |= TranscodeReason.VideoCodecNotSupported;
                    }

                    // Check audio codec
                    var selectedAudioStream = candidateAudioStreams.FirstOrDefault(audioStream => directPlayProfile.SupportsAudioCodec(audioStream.Codec));
                    if (selectedAudioStream == null)
                    {
                        directPlayProfileReasons |= TranscodeReason.AudioCodecNotSupported;
                    }
                    else
                    {
                        audioCodecProfileReasons = audioStreamMatches.GetValueOrDefault(selectedAudioStream);
                    }

                    var failureReasons = directPlayProfileReasons | containerProfileReasons | videoCodecProfileReasons | audioCodecProfileReasons | subtitleProfileReasons;
                    var directStreamFailureReasons = failureReasons & (~DirectStreamReasons);

                    PlayMethod? playMethod = null;
                    if (failureReasons == 0 && isEligibleForDirectPlay && mediaSource.SupportsDirectPlay)
                    {
                        playMethod = PlayMethod.DirectPlay;
                    }
                    else if (directStreamFailureReasons == 0 && isEligibleForDirectStream && mediaSource.SupportsDirectStream && directPlayProfile != null)
                    {
                        playMethod = PlayMethod.DirectStream;
                    }

                    var ranked = rank(ref failureReasons);
                    return (Result: (Profile: directPlayProfile, PlayMethod: playMethod, AudioStreamIndex: selectedAudioStream?.Index, TranscodeReason: failureReasons), Order: order, Rank: ranked);
                })
                .OrderByDescending(analysis => analysis.Result.PlayMethod)
                .ThenBy(analysis => analysis.Order)
                .ToArray()
                .ToLookup(analysis => analysis.Result.PlayMethod != null);

            var profileMatch = analyzedProfiles[true]
                .Select(analysis => analysis.Result)
                .FirstOrDefault();
            if (profileMatch.Profile != null)
            {
                return profileMatch;
            }

            var failureReasons = analyzedProfiles[false].OrderBy(a => a.Result.TranscodeReason).ThenBy(analysis => analysis.Order).FirstOrDefault().Result.TranscodeReason;
            if (failureReasons == 0)
            {
                failureReasons = TranscodeReason.DirectPlayError;
            }

            return (Profile: null, PlayMethod: null, AudioStreamIndex: null, TranscodeReasons: failureReasons);
        }

        private TranscodeReason CheckVideoAudioStreamDirectPlay(VideoOptions options, MediaSourceInfo mediaSource, string container, MediaStream audioStream, string language, bool isDefault)
        {
            var profile = options.Profile;
            var audioFailureConditions = GetProfileConditionsForVideoAudio(profile.CodecProfiles, container, audioStream.Codec, audioStream.Channels, audioStream.BitRate, audioStream.SampleRate, audioStream.BitDepth, audioStream.Profile, !audioStream.IsDefault);

            var audioStreamFailureReasons = AggregateFailureConditions(mediaSource, profile, "VideoAudioCodecProfile", audioFailureConditions);
            if (audioStream?.IsExternal == true)
            {
                audioStreamFailureReasons |= TranscodeReason.AudioIsExternal;
            }

            return audioStreamFailureReasons;
        }

        private TranscodeReason AggregateFailureConditions(MediaSourceInfo mediaSource, DeviceProfile profile, string type, IEnumerable<ProfileCondition> conditions)
        {
            return conditions.Aggregate<ProfileCondition, TranscodeReason>(0, (reasons, i) =>
            {
                LogConditionFailure(profile, type, i, mediaSource);
                var transcodeReasons = GetTranscodeReasonForFailedCondition(i);
                return reasons | transcodeReasons;
            });
        }

        private void LogConditionFailure(DeviceProfile profile, string type, ProfileCondition condition, MediaSourceInfo mediaSource)
        {
            _logger.LogDebug(
                "Profile: {0}, DirectPlay=false. Reason={1}.{2} Condition: {3}. ConditionValue: {4}. IsRequired: {5}. Path: {6}",
                type,
                profile.Name ?? "Unknown Profile",
                condition.Property,
                condition.Condition,
                condition.Value ?? string.Empty,
                condition.IsRequired,
                mediaSource.Path ?? "Unknown path");
        }

        private TranscodeReason IsEligibleForDirectPlay(
            MediaSourceInfo item,
            long maxBitrate,
            VideoOptions options,
            PlayMethod playMethod)
        {
            bool result = IsItemBitrateEligibleForDirectPlay(item, maxBitrate, playMethod);
            if (!result)
            {
                return TranscodeReason.ContainerBitrateExceedsLimit;
            }
            else
            {
                return 0;
            }
        }

        public static SubtitleProfile GetSubtitleProfile(
            MediaSourceInfo mediaSource,
            MediaStream subtitleStream,
            SubtitleProfile[] subtitleProfiles,
            PlayMethod playMethod,
            ITranscoderSupport transcoderSupport,
            string outputContainer,
            string transcodingSubProtocol)
        {
            if (!subtitleStream.IsExternal && (playMethod != PlayMethod.Transcode || !string.Equals(transcodingSubProtocol, "hls", StringComparison.OrdinalIgnoreCase)))
            {
                // Look for supported embedded subs of the same format
                foreach (var profile in subtitleProfiles)
                {
                    if (!profile.SupportsLanguage(subtitleStream.Language))
                    {
                        continue;
                    }

                    if (profile.Method != SubtitleDeliveryMethod.Embed)
                    {
                        continue;
                    }

                    if (!ContainerProfile.ContainsContainer(profile.Container, outputContainer))
                    {
                        continue;
                    }

                    if (playMethod == PlayMethod.Transcode && !IsSubtitleEmbedSupported(outputContainer))
                    {
                        continue;
                    }

                    if (subtitleStream.IsTextSubtitleStream == MediaStream.IsTextFormat(profile.Format) && string.Equals(profile.Format, subtitleStream.Codec, StringComparison.OrdinalIgnoreCase))
                    {
                        return profile;
                    }
                }

                // Look for supported embedded subs of a convertible format
                foreach (var profile in subtitleProfiles)
                {
                    if (!profile.SupportsLanguage(subtitleStream.Language))
                    {
                        continue;
                    }

                    if (profile.Method != SubtitleDeliveryMethod.Embed)
                    {
                        continue;
                    }

                    if (!ContainerProfile.ContainsContainer(profile.Container, outputContainer))
                    {
                        continue;
                    }

                    if (playMethod == PlayMethod.Transcode && !IsSubtitleEmbedSupported(outputContainer))
                    {
                        continue;
                    }

                    if (subtitleStream.IsTextSubtitleStream && subtitleStream.SupportsSubtitleConversionTo(profile.Format))
                    {
                        return profile;
                    }
                }
            }

            // Look for an external or hls profile that matches the stream type (text/graphical) and doesn't require conversion
            return GetExternalSubtitleProfile(mediaSource, subtitleStream, subtitleProfiles, playMethod, transcoderSupport, false) ??
                GetExternalSubtitleProfile(mediaSource, subtitleStream, subtitleProfiles, playMethod, transcoderSupport, true) ??
                new SubtitleProfile
                {
                    Method = SubtitleDeliveryMethod.Encode,
                    Format = subtitleStream.Codec
                };
        }

        private static bool IsSubtitleEmbedSupported(string transcodingContainer)
        {
            if (!string.IsNullOrEmpty(transcodingContainer))
            {
                string[] normalizedContainers = ContainerProfile.SplitValue(transcodingContainer);

                if (ContainerProfile.ContainsContainer(normalizedContainers, "ts")
                    || ContainerProfile.ContainsContainer(normalizedContainers, "mpegts")
                    || ContainerProfile.ContainsContainer(normalizedContainers, "mp4"))
                {
                    return false;
                }
                else if (ContainerProfile.ContainsContainer(normalizedContainers, "mkv")
                    || ContainerProfile.ContainsContainer(normalizedContainers, "matroska"))
                {
                    return true;
                }
            }

            return false;
        }

        private static SubtitleProfile GetExternalSubtitleProfile(MediaSourceInfo mediaSource, MediaStream subtitleStream, SubtitleProfile[] subtitleProfiles, PlayMethod playMethod, ITranscoderSupport transcoderSupport, bool allowConversion)
        {
            foreach (var profile in subtitleProfiles)
            {
                if (profile.Method != SubtitleDeliveryMethod.External && profile.Method != SubtitleDeliveryMethod.Hls)
                {
                    continue;
                }

                if (profile.Method == SubtitleDeliveryMethod.Hls && playMethod != PlayMethod.Transcode)
                {
                    continue;
                }

                if (!profile.SupportsLanguage(subtitleStream.Language))
                {
                    continue;
                }

                if (!subtitleStream.IsExternal && !transcoderSupport.CanExtractSubtitles(subtitleStream.Codec))
                {
                    continue;
                }

                if ((profile.Method == SubtitleDeliveryMethod.External && subtitleStream.IsTextSubtitleStream == MediaStream.IsTextFormat(profile.Format)) ||
                    (profile.Method == SubtitleDeliveryMethod.Hls && subtitleStream.IsTextSubtitleStream))
                {
                    bool requiresConversion = !string.Equals(subtitleStream.Codec, profile.Format, StringComparison.OrdinalIgnoreCase);

                    if (!requiresConversion)
                    {
                        return profile;
                    }

                    if (!allowConversion)
                    {
                        continue;
                    }

                    // TODO: Build this into subtitleStream.SupportsExternalStream
                    if (mediaSource.IsInfiniteStream)
                    {
                        continue;
                    }

                    if (subtitleStream.IsTextSubtitleStream && subtitleStream.SupportsExternalStream && subtitleStream.SupportsSubtitleConversionTo(profile.Format))
                    {
                        return profile;
                    }
                }
            }

            return null;
        }

        private bool IsItemBitrateEligibleForDirectPlay(MediaSourceInfo item, long maxBitrate, PlayMethod playMethod)
        {
            // Don't restrict by bitrate if coming from an external domain
            if (item.IsRemote)
            {
                return true;
            }

            long requestedMaxBitrate = maxBitrate > 0 ? maxBitrate : 1000000;

            // If we don't know the bitrate, then force a transcode if requested max bitrate is under 40 mbps
            int itemBitrate = item.Bitrate ?? 40000000;

            if (itemBitrate > requestedMaxBitrate)
            {
                _logger.LogDebug(
                    "Bitrate exceeds {PlayBackMethod} limit: media bitrate: {MediaBitrate}, max bitrate: {MaxBitrate}",
                    playMethod,
                    itemBitrate,
                    requestedMaxBitrate);
                return false;
            }

            return true;
        }

        private static 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 static void ValidateAudioInput(AudioOptions options)
        {
            if (options.ItemId.Equals(default))
            {
                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 static IEnumerable<ProfileCondition> GetProfileConditionsForVideoAudio(
            IEnumerable<CodecProfile> codecProfiles,
            string container,
            string codec,
            int? audioChannels,
            int? audioBitrate,
            int? audioSampleRate,
            int? audioBitDepth,
            string audioProfile,
            bool? isSecondaryAudio)
        {
            return codecProfiles
                .Where(profile => profile.Type == CodecType.VideoAudio && profile.ContainsAnyCodec(codec, container) &&
                    profile.ApplyConditions.All(applyCondition => ConditionProcessor.IsVideoAudioConditionSatisfied(applyCondition, audioChannels, audioBitrate, audioSampleRate, audioBitDepth, audioProfile, isSecondaryAudio)))
                .SelectMany(profile => profile.Conditions)
                .Where(condition => !ConditionProcessor.IsVideoAudioConditionSatisfied(condition, audioChannels, audioBitrate, audioSampleRate, audioBitDepth, audioProfile, isSecondaryAudio));
        }

        private static IEnumerable<ProfileCondition> GetProfileConditionsForAudio(
            IEnumerable<CodecProfile> codecProfiles,
            string container,
            string codec,
            int? audioChannels,
            int? audioBitrate,
            int? audioSampleRate,
            int? audioBitDepth,
            bool checkConditions)
        {
            var conditions = codecProfiles
                .Where(profile => profile.Type == CodecType.Audio && profile.ContainsAnyCodec(codec, container) &&
                    profile.ApplyConditions.All(applyCondition => ConditionProcessor.IsAudioConditionSatisfied(applyCondition, audioChannels, audioBitrate, audioSampleRate, audioBitDepth)))
                .SelectMany(profile => profile.Conditions);

            if (!checkConditions)
            {
                return conditions;
            }

            return conditions.Where(condition => !ConditionProcessor.IsAudioConditionSatisfied(condition, audioChannels, audioBitrate, audioSampleRate, audioBitDepth));
        }

        private void ApplyTranscodingConditions(StreamInfo item, IEnumerable<ProfileCondition> conditions, string qualifier, bool enableQualifiedConditions, bool enableNonQualifiedConditions)
        {
            foreach (ProfileCondition condition in conditions)
            {
                string value = condition.Value;

                if (string.IsNullOrEmpty(value))
                {
                    continue;
                }

                // No way to express this
                if (condition.Condition == ProfileConditionType.GreaterThanEqual)
                {
                    continue;
                }

                switch (condition.Property)
                {
                    case ProfileConditionValue.AudioBitrate:
                        {
                            if (!enableNonQualifiedConditions)
                            {
                                continue;
                            }

                            if (int.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out var num))
                            {
                                if (condition.Condition == ProfileConditionType.Equals)
                                {
                                    item.AudioBitrate = num;
                                }
                                else if (condition.Condition == ProfileConditionType.LessThanEqual)
                                {
                                    item.AudioBitrate = Math.Min(num, item.AudioBitrate ?? num);
                                }
                                else if (condition.Condition == ProfileConditionType.GreaterThanEqual)
                                {
                                    item.AudioBitrate = Math.Max(num, item.AudioBitrate ?? num);
                                }
                            }

                            break;
                        }

                    case ProfileConditionValue.AudioSampleRate:
                        {
                            if (!enableNonQualifiedConditions)
                            {
                                continue;
                            }

                            if (int.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out var num))
                            {
                                if (condition.Condition == ProfileConditionType.Equals)
                                {
                                    item.AudioSampleRate = num;
                                }
                                else if (condition.Condition == ProfileConditionType.LessThanEqual)
                                {
                                    item.AudioSampleRate = Math.Min(num, item.AudioSampleRate ?? num);
                                }
                                else if (condition.Condition == ProfileConditionType.GreaterThanEqual)
                                {
                                    item.AudioSampleRate = Math.Max(num, item.AudioSampleRate ?? num);
                                }
                            }

                            break;
                        }

                    case ProfileConditionValue.AudioChannels:
                        {
                            if (string.IsNullOrEmpty(qualifier))
                            {
                                if (!enableNonQualifiedConditions)
                                {
                                    continue;
                                }
                            }
                            else
                            {
                                if (!enableQualifiedConditions)
                                {
                                    continue;
                                }
                            }

                            if (int.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out var num))
                            {
                                if (condition.Condition == ProfileConditionType.Equals)
                                {
                                    item.SetOption(qualifier, "audiochannels", num.ToString(CultureInfo.InvariantCulture));
                                }
                                else if (condition.Condition == ProfileConditionType.LessThanEqual)
                                {
                                    item.SetOption(qualifier, "audiochannels", Math.Min(num, item.GetTargetAudioChannels(qualifier) ?? num).ToString(CultureInfo.InvariantCulture));
                                }
                                else if (condition.Condition == ProfileConditionType.GreaterThanEqual)
                                {
                                    item.SetOption(qualifier, "audiochannels", Math.Max(num, item.GetTargetAudioChannels(qualifier) ?? num).ToString(CultureInfo.InvariantCulture));
                                }
                            }

                            break;
                        }

                    case ProfileConditionValue.IsAvc:
                        {
                            if (!enableNonQualifiedConditions)
                            {
                                continue;
                            }

                            if (bool.TryParse(value, out var isAvc))
                            {
                                if (isAvc && condition.Condition == ProfileConditionType.Equals)
                                {
                                    item.RequireAvc = true;
                                }
                                else if (!isAvc && condition.Condition == ProfileConditionType.NotEquals)
                                {
                                    item.RequireAvc = true;
                                }
                            }

                            break;
                        }

                    case ProfileConditionValue.IsAnamorphic:
                        {
                            if (!enableNonQualifiedConditions)
                            {
                                continue;
                            }

                            if (bool.TryParse(value, out var isAnamorphic))
                            {
                                if (isAnamorphic && condition.Condition == ProfileConditionType.Equals)
                                {
                                    item.RequireNonAnamorphic = true;
                                }
                                else if (!isAnamorphic && condition.Condition == ProfileConditionType.NotEquals)
                                {
                                    item.RequireNonAnamorphic = true;
                                }
                            }

                            break;
                        }

                    case ProfileConditionValue.IsInterlaced:
                        {
                            if (string.IsNullOrEmpty(qualifier))
                            {
                                if (!enableNonQualifiedConditions)
                                {
                                    continue;
                                }
                            }
                            else
                            {
                                if (!enableQualifiedConditions)
                                {
                                    continue;
                                }
                            }

                            if (bool.TryParse(value, out var isInterlaced))
                            {
                                if (!isInterlaced && condition.Condition == ProfileConditionType.Equals)
                                {
                                    item.SetOption(qualifier, "deinterlace", "true");
                                }
                                else if (isInterlaced && condition.Condition == ProfileConditionType.NotEquals)
                                {
                                    item.SetOption(qualifier, "deinterlace", "true");
                                }
                            }

                            break;
                        }

                    case ProfileConditionValue.AudioProfile:
                    case ProfileConditionValue.Has64BitOffsets:
                    case ProfileConditionValue.PacketLength:
                    case ProfileConditionValue.NumAudioStreams:
                    case ProfileConditionValue.NumVideoStreams:
                    case ProfileConditionValue.IsSecondaryAudio:
                    case ProfileConditionValue.VideoTimestamp:
                        {
                            // Not supported yet
                            break;
                        }

                    case ProfileConditionValue.RefFrames:
                        {
                            if (string.IsNullOrEmpty(qualifier))
                            {
                                if (!enableNonQualifiedConditions)
                                {
                                    continue;
                                }
                            }
                            else
                            {
                                if (!enableQualifiedConditions)
                                {
                                    continue;
                                }
                            }

                            if (int.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out var num))
                            {
                                if (condition.Condition == ProfileConditionType.Equals)
                                {
                                    item.SetOption(qualifier, "maxrefframes", num.ToString(CultureInfo.InvariantCulture));
                                }
                                else if (condition.Condition == ProfileConditionType.LessThanEqual)
                                {
                                    item.SetOption(qualifier, "maxrefframes", Math.Min(num, item.GetTargetRefFrames(qualifier) ?? num).ToString(CultureInfo.InvariantCulture));
                                }
                                else if (condition.Condition == ProfileConditionType.GreaterThanEqual)
                                {
                                    item.SetOption(qualifier, "maxrefframes", Math.Max(num, item.GetTargetRefFrames(qualifier) ?? num).ToString(CultureInfo.InvariantCulture));
                                }
                            }

                            break;
                        }

                    case ProfileConditionValue.VideoBitDepth:
                        {
                            if (string.IsNullOrEmpty(qualifier))
                            {
                                if (!enableNonQualifiedConditions)
                                {
                                    continue;
                                }
                            }
                            else
                            {
                                if (!enableQualifiedConditions)
                                {
                                    continue;
                                }
                            }

                            if (int.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out var num))
                            {
                                if (condition.Condition == ProfileConditionType.Equals)
                                {
                                    item.SetOption(qualifier, "videobitdepth", num.ToString(CultureInfo.InvariantCulture));
                                }
                                else if (condition.Condition == ProfileConditionType.LessThanEqual)
                                {
                                    item.SetOption(qualifier, "videobitdepth", Math.Min(num, item.GetTargetVideoBitDepth(qualifier) ?? num).ToString(CultureInfo.InvariantCulture));
                                }
                                else if (condition.Condition == ProfileConditionType.GreaterThanEqual)
                                {
                                    item.SetOption(qualifier, "videobitdepth", Math.Max(num, item.GetTargetVideoBitDepth(qualifier) ?? num).ToString(CultureInfo.InvariantCulture));
                                }
                            }

                            break;
                        }

                    case ProfileConditionValue.VideoProfile:
                        {
                            if (string.IsNullOrEmpty(qualifier))
                            {
                                continue;
                            }

                            // change from split by | to comma
                            // strip spaces to avoid having to encode
                            var values = value
                                .Split('|', StringSplitOptions.RemoveEmptyEntries);

                            if (condition.Condition == ProfileConditionType.Equals)
                            {
                                item.SetOption(qualifier, "profile", string.Join(',', values));
                            }
                            else if (condition.Condition == ProfileConditionType.EqualsAny)
                            {
                                var currentValue = item.GetOption(qualifier, "profile");
                                if (!string.IsNullOrEmpty(currentValue) && values.Any(value => value == currentValue))
                                {
                                    item.SetOption(qualifier, "profile", currentValue);
                                }
                                else
                                {
                                    item.SetOption(qualifier, "profile", string.Join(',', values));
                                }
                            }

                            break;
                        }

                    case ProfileConditionValue.Height:
                        {
                            if (!enableNonQualifiedConditions)
                            {
                                continue;
                            }

                            if (int.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out var num))
                            {
                                if (condition.Condition == ProfileConditionType.Equals)
                                {
                                    item.MaxHeight = num;
                                }
                                else if (condition.Condition == ProfileConditionType.LessThanEqual)
                                {
                                    item.MaxHeight = Math.Min(num, item.MaxHeight ?? num);
                                }
                                else if (condition.Condition == ProfileConditionType.GreaterThanEqual)
                                {
                                    item.MaxHeight = Math.Max(num, item.MaxHeight ?? num);
                                }
                            }

                            break;
                        }

                    case ProfileConditionValue.VideoBitrate:
                        {
                            if (!enableNonQualifiedConditions)
                            {
                                continue;
                            }

                            if (int.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out var num))
                            {
                                if (condition.Condition == ProfileConditionType.Equals)
                                {
                                    item.VideoBitrate = num;
                                }
                                else if (condition.Condition == ProfileConditionType.LessThanEqual)
                                {
                                    item.VideoBitrate = Math.Min(num, item.VideoBitrate ?? num);
                                }
                                else if (condition.Condition == ProfileConditionType.GreaterThanEqual)
                                {
                                    item.VideoBitrate = Math.Max(num, item.VideoBitrate ?? num);
                                }
                            }

                            break;
                        }

                    case ProfileConditionValue.VideoFramerate:
                        {
                            if (!enableNonQualifiedConditions)
                            {
                                continue;
                            }

                            if (float.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out var num))
                            {
                                if (condition.Condition == ProfileConditionType.Equals)
                                {
                                    item.MaxFramerate = num;
                                }
                                else if (condition.Condition == ProfileConditionType.LessThanEqual)
                                {
                                    item.MaxFramerate = Math.Min(num, item.MaxFramerate ?? num);
                                }
                                else if (condition.Condition == ProfileConditionType.GreaterThanEqual)
                                {
                                    item.MaxFramerate = Math.Max(num, item.MaxFramerate ?? num);
                                }
                            }

                            break;
                        }

                    case ProfileConditionValue.VideoLevel:
                        {
                            if (string.IsNullOrEmpty(qualifier))
                            {
                                continue;
                            }

                            if (int.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out var num))
                            {
                                if (condition.Condition == ProfileConditionType.Equals)
                                {
                                    item.SetOption(qualifier, "level", num.ToString(CultureInfo.InvariantCulture));
                                }
                                else if (condition.Condition == ProfileConditionType.LessThanEqual)
                                {
                                    item.SetOption(qualifier, "level", Math.Min(num, item.GetTargetVideoLevel(qualifier) ?? num).ToString(CultureInfo.InvariantCulture));
                                }
                                else if (condition.Condition == ProfileConditionType.GreaterThanEqual)
                                {
                                    item.SetOption(qualifier, "level", Math.Max(num, item.GetTargetVideoLevel(qualifier) ?? num).ToString(CultureInfo.InvariantCulture));
                                }
                            }

                            break;
                        }

                    case ProfileConditionValue.Width:
                        {
                            if (!enableNonQualifiedConditions)
                            {
                                continue;
                            }

                            if (int.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out var num))
                            {
                                if (condition.Condition == ProfileConditionType.Equals)
                                {
                                    item.MaxWidth = num;
                                }
                                else if (condition.Condition == ProfileConditionType.LessThanEqual)
                                {
                                    item.MaxWidth = Math.Min(num, item.MaxWidth ?? num);
                                }
                                else if (condition.Condition == ProfileConditionType.GreaterThanEqual)
                                {
                                    item.MaxWidth = Math.Max(num, item.MaxWidth ?? num);
                                }
                            }

                            break;
                        }

                    default:
                        break;
                }
            }
        }

        private static bool IsAudioDirectPlaySupported(DirectPlayProfile profile, MediaSourceInfo item, MediaStream audioStream)
        {
            // Check container type
            if (!profile.SupportsContainer(item.Container))
            {
                return false;
            }

            // Check audio codec
            string audioCodec = audioStream?.Codec;
            if (!profile.SupportsAudioCodec(audioCodec))
            {
                return false;
            }

            return true;
        }
    }
}