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StreamBuilder.cs
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StreamBuilder.cs
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#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.VideoRangeType:
return TranscodeReason.VideoRangeTypeNotSupported;
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 (IsItemBitrateEligibleForDirectPlayback(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 (IsItemBitrateEligibleForDirectPlayback(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)
{
ArgumentNullException.ThrowIfNull(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 directPlayBitrateEligibility = IsBitrateEligibleForDirectPlayback(item, options.GetMaxBitrate(false) ?? 0, options, PlayMethod.DirectPlay);
var directStreamBitrateEligibility = IsBitrateEligibleForDirectPlayback(item, options.GetMaxBitrate(false) ?? 0, options, PlayMethod.DirectStream);
bool isEligibleForDirectPlay = options.EnableDirectPlay && (options.ForceDirectPlay || directPlayBitrateEligibility == 0);
bool isEligibleForDirectStream = options.EnableDirectStream && (options.ForceDirectStream || directStreamBitrateEligibility == 0);
var transcodeReasons = directPlayBitrateEligibility | directStreamBitrateEligibility;
_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.HasValue)
{
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 && playlistItem.PlayMethod != PlayMethod.DirectPlay)
{
// 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);
playlistItem.PlayMethod = PlayMethod.Transcode;
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.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) &&
i.ApplyConditions.All(applyCondition => ConditionProcessor.IsVideoConditionSatisfied(applyCondition, videoStream?.Width, videoStream?.Height, videoStream?.BitDepth, videoStream?.BitRate, videoStream?.Profile, videoStream?.VideoRangeType, videoStream?.Level, videoFramerate, videoStream?.PacketLength, timestamp, videoStream?.IsAnamorphic, videoStream?.IsInterlaced, videoStream?.RefFrames, numVideoStreams, numAudioStreams, videoStream?.CodecTag, videoStream?.IsAVC)))
.Select(i =>
i.Conditions.All(condition => ConditionProcessor.IsVideoConditionSatisfied(condition, videoStream?.Width, videoStream?.Height, videoStream?.BitDepth, videoStream?.BitRate, videoStream?.Profile, videoStream?.VideoRangeType, videoStream?.Level, videoFramerate, videoStream?.PacketLength, timestamp, videoStream?.IsAnamorphic, videoStream?.IsInterlaced, videoStream?.RefFrames, numVideoStreams, numAudioStreams, videoStream?.CodecTag, videoStream?.IsAVC)));
// An empty appliedVideoConditions means that the codec has no conditions for the current video stream
var conditionsSatisfied = appliedVideoConditions.All(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;
if (directVideoCodec != null)
{
// merge directVideoCodec to videoCodecs
Array.Resize(ref videoCodecs, videoCodecs.Length + 1);
videoCodecs[^1] = directVideoCodec;
}
playlistItem.VideoCodecs = 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;
string videoRangeType = videoStream?.VideoRangeType;
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.All(applyCondition => ConditionProcessor.IsVideoConditionSatisfied(applyCondition, width, height, bitDepth, videoBitrate, videoProfile, videoRangeType, 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.VideoAudio &&
i.ContainsAnyCodec(audioCodec, container) &&
i.ApplyConditions.All(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.