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jellyfin/MediaBrowser.MediaEncoding/Probing/ProbeResultNormalizer.cs

927 lines
34 KiB

using MediaBrowser.Common.IO;
using MediaBrowser.Model.Dto;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Extensions;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using CommonIO;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.MediaInfo;
namespace MediaBrowser.MediaEncoding.Probing
{
public class ProbeResultNormalizer
{
private readonly CultureInfo _usCulture = new CultureInfo("en-US");
private readonly ILogger _logger;
private readonly IFileSystem _fileSystem;
public ProbeResultNormalizer(ILogger logger, IFileSystem fileSystem)
{
_logger = logger;
_fileSystem = fileSystem;
}
public MediaInfo GetMediaInfo(InternalMediaInfoResult data, VideoType videoType, bool isAudio, string path, MediaProtocol protocol)
{
var info = new Model.MediaInfo.MediaInfo
{
Path = path,
Protocol = protocol
};
FFProbeHelpers.NormalizeFFProbeResult(data);
SetSize(data, info);
var internalStreams = data.streams ?? new MediaStreamInfo[] { };
info.MediaStreams = internalStreams.Select(s => GetMediaStream(isAudio, s, data.format))
.Where(i => i != null)
.ToList();
if (data.format != null)
{
info.Container = data.format.format_name;
if (!string.IsNullOrEmpty(data.format.bit_rate))
{
int value;
if (int.TryParse(data.format.bit_rate, NumberStyles.Any, _usCulture, out value))
{
info.Bitrate = value;
}
}
}
if (isAudio)
{
SetAudioRuntimeTicks(data, info);
var tags = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
// tags are normally located under data.format, but we've seen some cases with ogg where they're part of the audio stream
// so let's create a combined list of both
if (data.streams != null)
{
var audioStream = data.streams.FirstOrDefault(i => string.Equals(i.codec_type, "audio", StringComparison.OrdinalIgnoreCase));
if (audioStream != null && audioStream.tags != null)
{
foreach (var pair in audioStream.tags)
{
tags[pair.Key] = pair.Value;
}
}
}
if (data.format != null && data.format.tags != null)
{
foreach (var pair in data.format.tags)
{
tags[pair.Key] = pair.Value;
}
}
SetAudioInfoFromTags(info, tags);
}
else
{
if (data.format != null && !string.IsNullOrEmpty(data.format.duration))
{
info.RunTimeTicks = TimeSpan.FromSeconds(double.Parse(data.format.duration, _usCulture)).Ticks;
}
FetchWtvInfo(info, data);
if (data.Chapters != null)
{
info.Chapters = data.Chapters.Select(GetChapterInfo).ToList();
}
ExtractTimestamp(info);
}
return info;
}
/// <summary>
/// Converts ffprobe stream info to our MediaStream class
/// </summary>
/// <param name="isAudio">if set to <c>true</c> [is audio].</param>
/// <param name="streamInfo">The stream info.</param>
/// <param name="formatInfo">The format info.</param>
/// <returns>MediaStream.</returns>
private MediaStream GetMediaStream(bool isAudio, MediaStreamInfo streamInfo, MediaFormatInfo formatInfo)
{
// These are mp4 chapters
if (string.Equals(streamInfo.codec_name, "mov_text", StringComparison.OrdinalIgnoreCase))
{
return null;
}
var stream = new MediaStream
{
Codec = streamInfo.codec_name,
Profile = streamInfo.profile,
Level = streamInfo.level,
Index = streamInfo.index,
PixelFormat = streamInfo.pix_fmt
};
// Filter out junk
if (!string.IsNullOrWhiteSpace(streamInfo.codec_tag_string) && streamInfo.codec_tag_string.IndexOf("[0]", StringComparison.OrdinalIgnoreCase) == -1)
{
stream.CodecTag = streamInfo.codec_tag_string;
}
if (streamInfo.tags != null)
{
stream.Language = GetDictionaryValue(streamInfo.tags, "language");
stream.Comment = GetDictionaryValue(streamInfo.tags, "comment");
}
if (string.Equals(streamInfo.codec_type, "audio", StringComparison.OrdinalIgnoreCase))
{
stream.Type = MediaStreamType.Audio;
stream.Channels = streamInfo.channels;
if (!string.IsNullOrEmpty(streamInfo.sample_rate))
{
int value;
if (int.TryParse(streamInfo.sample_rate, NumberStyles.Any, _usCulture, out value))
{
stream.SampleRate = value;
}
}
stream.ChannelLayout = ParseChannelLayout(streamInfo.channel_layout);
if (streamInfo.bits_per_sample > 0)
{
stream.BitDepth = streamInfo.bits_per_sample;
}
else if (streamInfo.bits_per_raw_sample > 0)
{
stream.BitDepth = streamInfo.bits_per_raw_sample;
}
}
else if (string.Equals(streamInfo.codec_type, "subtitle", StringComparison.OrdinalIgnoreCase))
{
stream.Type = MediaStreamType.Subtitle;
}
else if (string.Equals(streamInfo.codec_type, "video", StringComparison.OrdinalIgnoreCase))
{
stream.Type = isAudio || string.Equals(stream.Codec, "mjpeg", StringComparison.OrdinalIgnoreCase)
? MediaStreamType.EmbeddedImage
: MediaStreamType.Video;
stream.Width = streamInfo.width;
stream.Height = streamInfo.height;
stream.AspectRatio = GetAspectRatio(streamInfo);
stream.AverageFrameRate = GetFrameRate(streamInfo.avg_frame_rate);
stream.RealFrameRate = GetFrameRate(streamInfo.r_frame_rate);
if (streamInfo.bits_per_sample > 0)
{
stream.BitDepth = streamInfo.bits_per_sample;
}
else if (streamInfo.bits_per_raw_sample > 0)
{
stream.BitDepth = streamInfo.bits_per_raw_sample;
}
//stream.IsAnamorphic = string.Equals(streamInfo.sample_aspect_ratio, "0:1", StringComparison.OrdinalIgnoreCase) ||
// string.Equals(stream.AspectRatio, "2.35:1", StringComparison.OrdinalIgnoreCase) ||
// string.Equals(stream.AspectRatio, "2.40:1", StringComparison.OrdinalIgnoreCase);
// http://stackoverflow.com/questions/17353387/how-to-detect-anamorphic-video-with-ffprobe
stream.IsAnamorphic = string.Equals(streamInfo.sample_aspect_ratio, "0:1", StringComparison.OrdinalIgnoreCase);
if (streamInfo.refs > 0)
{
stream.RefFrames = streamInfo.refs;
}
}
else
{
return null;
}
// Get stream bitrate
var bitrate = 0;
if (!string.IsNullOrEmpty(streamInfo.bit_rate))
{
int value;
if (int.TryParse(streamInfo.bit_rate, NumberStyles.Any, _usCulture, out value))
{
bitrate = value;
}
}
if (bitrate == 0 && formatInfo != null && !string.IsNullOrEmpty(formatInfo.bit_rate) && stream.Type == MediaStreamType.Video)
{
// If the stream info doesn't have a bitrate get the value from the media format info
int value;
if (int.TryParse(formatInfo.bit_rate, NumberStyles.Any, _usCulture, out value))
{
bitrate = value;
}
}
if (bitrate > 0)
{
stream.BitRate = bitrate;
}
if (streamInfo.disposition != null)
{
var isDefault = GetDictionaryValue(streamInfo.disposition, "default");
var isForced = GetDictionaryValue(streamInfo.disposition, "forced");
stream.IsDefault = string.Equals(isDefault, "1", StringComparison.OrdinalIgnoreCase);
stream.IsForced = string.Equals(isForced, "1", StringComparison.OrdinalIgnoreCase);
}
return stream;
}
/// <summary>
/// Gets a string from an FFProbeResult tags dictionary
/// </summary>
/// <param name="tags">The tags.</param>
/// <param name="key">The key.</param>
/// <returns>System.String.</returns>
private string GetDictionaryValue(Dictionary<string, string> tags, string key)
{
if (tags == null)
{
return null;
}
string val;
tags.TryGetValue(key, out val);
return val;
}
private string ParseChannelLayout(string input)
{
if (string.IsNullOrEmpty(input))
{
return input;
}
return input.Split('(').FirstOrDefault();
}
private string GetAspectRatio(MediaStreamInfo info)
{
var original = info.display_aspect_ratio;
int height;
int width;
var parts = (original ?? string.Empty).Split(':');
if (!(parts.Length == 2 &&
int.TryParse(parts[0], NumberStyles.Any, _usCulture, out width) &&
int.TryParse(parts[1], NumberStyles.Any, _usCulture, out height) &&
width > 0 &&
height > 0))
{
width = info.width;
height = info.height;
}
if (width > 0 && height > 0)
{
double ratio = width;
ratio /= height;
if (IsClose(ratio, 1.777777778, .03))
{
return "16:9";
}
if (IsClose(ratio, 1.3333333333, .05))
{
return "4:3";
}
if (IsClose(ratio, 1.41))
{
return "1.41:1";
}
if (IsClose(ratio, 1.5))
{
return "1.5:1";
}
if (IsClose(ratio, 1.6))
{
return "1.6:1";
}
if (IsClose(ratio, 1.66666666667))
{
return "5:3";
}
if (IsClose(ratio, 1.85, .02))
{
return "1.85:1";
}
if (IsClose(ratio, 2.35, .025))
{
return "2.35:1";
}
if (IsClose(ratio, 2.4, .025))
{
return "2.40:1";
}
}
return original;
}
private bool IsClose(double d1, double d2, double variance = .005)
{
return Math.Abs(d1 - d2) <= variance;
}
/// <summary>
/// Gets a frame rate from a string value in ffprobe output
/// This could be a number or in the format of 2997/125.
/// </summary>
/// <param name="value">The value.</param>
/// <returns>System.Nullable{System.Single}.</returns>
private float? GetFrameRate(string value)
{
if (!string.IsNullOrEmpty(value))
{
var parts = value.Split('/');
float result;
if (parts.Length == 2)
{
result = float.Parse(parts[0], _usCulture) / float.Parse(parts[1], _usCulture);
}
else
{
result = float.Parse(parts[0], _usCulture);
}
return float.IsNaN(result) ? (float?)null : result;
}
return null;
}
private void SetAudioRuntimeTicks(InternalMediaInfoResult result, Model.MediaInfo.MediaInfo data)
{
if (result.streams != null)
{
// Get the first audio stream
var stream = result.streams.FirstOrDefault(s => string.Equals(s.codec_type, "audio", StringComparison.OrdinalIgnoreCase));
if (stream != null)
{
// Get duration from stream properties
var duration = stream.duration;
// If it's not there go into format properties
if (string.IsNullOrEmpty(duration))
{
duration = result.format.duration;
}
// If we got something, parse it
if (!string.IsNullOrEmpty(duration))
{
data.RunTimeTicks = TimeSpan.FromSeconds(double.Parse(duration, _usCulture)).Ticks;
}
}
}
}
private void SetSize(InternalMediaInfoResult data, Model.MediaInfo.MediaInfo info)
{
if (data.format != null)
{
if (!string.IsNullOrEmpty(data.format.size))
{
info.Size = long.Parse(data.format.size, _usCulture);
}
else
{
info.Size = null;
}
}
}
private void SetAudioInfoFromTags(Model.MediaInfo.MediaInfo audio, Dictionary<string, string> tags)
{
var title = FFProbeHelpers.GetDictionaryValue(tags, "title");
// Only set Name if title was found in the dictionary
if (!string.IsNullOrEmpty(title))
{
audio.Title = title;
}
var composer = FFProbeHelpers.GetDictionaryValue(tags, "composer");
if (!string.IsNullOrWhiteSpace(composer))
{
foreach (var person in Split(composer, false))
{
audio.People.Add(new BaseItemPerson { Name = person, Type = PersonType.Composer });
}
}
var conductor = FFProbeHelpers.GetDictionaryValue(tags, "conductor");
if (!string.IsNullOrWhiteSpace(conductor))
{
foreach (var person in Split(conductor, false))
{
audio.People.Add(new BaseItemPerson { Name = person, Type = PersonType.Conductor });
}
}
audio.Album = FFProbeHelpers.GetDictionaryValue(tags, "album");
var artists = FFProbeHelpers.GetDictionaryValue(tags, "artists");
if (!string.IsNullOrWhiteSpace(artists))
{
audio.Artists = SplitArtists(artists, new[] { '/', ';' }, false)
.Distinct(StringComparer.OrdinalIgnoreCase)
.ToList();
}
else
{
var artist = FFProbeHelpers.GetDictionaryValue(tags, "artist");
if (string.IsNullOrWhiteSpace(artist))
{
audio.Artists.Clear();
}
else
{
audio.Artists = SplitArtists(artist, _nameDelimiters, true)
.Distinct(StringComparer.OrdinalIgnoreCase)
.ToList();
}
}
var albumArtist = FFProbeHelpers.GetDictionaryValue(tags, "albumartist");
if (string.IsNullOrWhiteSpace(albumArtist))
{
albumArtist = FFProbeHelpers.GetDictionaryValue(tags, "album artist");
}
if (string.IsNullOrWhiteSpace(albumArtist))
{
albumArtist = FFProbeHelpers.GetDictionaryValue(tags, "album_artist");
}
if (string.IsNullOrWhiteSpace(albumArtist))
{
audio.AlbumArtists = new List<string>();
}
else
{
audio.AlbumArtists = SplitArtists(albumArtist, _nameDelimiters, true)
.Distinct(StringComparer.OrdinalIgnoreCase)
.ToList();
}
// Track number
audio.IndexNumber = GetDictionaryDiscValue(tags, "track");
// Disc number
audio.ParentIndexNumber = GetDictionaryDiscValue(tags, "disc");
audio.ProductionYear = FFProbeHelpers.GetDictionaryNumericValue(tags, "date");
// Several different forms of retaildate
audio.PremiereDate = FFProbeHelpers.GetDictionaryDateTime(tags, "retaildate") ??
FFProbeHelpers.GetDictionaryDateTime(tags, "retail date") ??
FFProbeHelpers.GetDictionaryDateTime(tags, "retail_date") ??
FFProbeHelpers.GetDictionaryDateTime(tags, "date");
// If we don't have a ProductionYear try and get it from PremiereDate
if (audio.PremiereDate.HasValue && !audio.ProductionYear.HasValue)
{
audio.ProductionYear = audio.PremiereDate.Value.ToLocalTime().Year;
}
FetchGenres(audio, tags);
// There's several values in tags may or may not be present
FetchStudios(audio, tags, "organization");
FetchStudios(audio, tags, "ensemble");
FetchStudios(audio, tags, "publisher");
FetchStudios(audio, tags, "label");
// These support mulitple values, but for now we only store the first.
var mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MusicBrainz Album Artist Id"));
if (mb == null) mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MUSICBRAINZ_ALBUMARTISTID"));
audio.SetProviderId(MetadataProviders.MusicBrainzAlbumArtist, mb);
mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MusicBrainz Artist Id"));
if (mb == null) mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MUSICBRAINZ_ARTISTID"));
audio.SetProviderId(MetadataProviders.MusicBrainzArtist, mb);
mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MusicBrainz Album Id"));
if (mb == null) mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MUSICBRAINZ_ALBUMID"));
audio.SetProviderId(MetadataProviders.MusicBrainzAlbum, mb);
mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MusicBrainz Release Group Id"));
if (mb == null) mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MUSICBRAINZ_RELEASEGROUPID"));
audio.SetProviderId(MetadataProviders.MusicBrainzReleaseGroup, mb);
mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MusicBrainz Release Track Id"));
if (mb == null) mb = GetMultipleMusicBrainzId(FFProbeHelpers.GetDictionaryValue(tags, "MUSICBRAINZ_RELEASETRACKID"));
audio.SetProviderId(MetadataProviders.MusicBrainzTrack, mb);
}
private string GetMultipleMusicBrainzId(string value)
{
if (string.IsNullOrWhiteSpace(value))
{
return null;
}
return value.Split(new[] { '/' }, StringSplitOptions.RemoveEmptyEntries)
.Select(i => i.Trim())
.FirstOrDefault(i => !string.IsNullOrWhiteSpace(i));
}
private readonly char[] _nameDelimiters = { '/', '|', ';', '\\' };
/// <summary>
/// Splits the specified val.
/// </summary>
/// <param name="val">The val.</param>
/// <param name="allowCommaDelimiter">if set to <c>true</c> [allow comma delimiter].</param>
/// <returns>System.String[][].</returns>
private IEnumerable<string> Split(string val, bool allowCommaDelimiter)
{
// Only use the comma as a delimeter if there are no slashes or pipes.
// We want to be careful not to split names that have commas in them
var delimeter = !allowCommaDelimiter || _nameDelimiters.Any(i => val.IndexOf(i) != -1) ?
_nameDelimiters :
new[] { ',' };
return val.Split(delimeter, StringSplitOptions.RemoveEmptyEntries)
.Where(i => !string.IsNullOrWhiteSpace(i))
.Select(i => i.Trim());
}
private const string ArtistReplaceValue = " | ";
private IEnumerable<string> SplitArtists(string val, char[] delimiters, bool splitFeaturing)
{
if (splitFeaturing)
{
val = val.Replace(" featuring ", ArtistReplaceValue, StringComparison.OrdinalIgnoreCase)
.Replace(" feat. ", ArtistReplaceValue, StringComparison.OrdinalIgnoreCase);
}
var artistsFound = new List<string>();
foreach (var whitelistArtist in GetSplitWhitelist())
{
var originalVal = val;
val = val.Replace(whitelistArtist, "|", StringComparison.OrdinalIgnoreCase);
if (!string.Equals(originalVal, val, StringComparison.OrdinalIgnoreCase))
{
artistsFound.Add(whitelistArtist);
}
}
var artists = val.Split(delimiters, StringSplitOptions.RemoveEmptyEntries)
.Where(i => !string.IsNullOrWhiteSpace(i))
.Select(i => i.Trim());
artistsFound.AddRange(artists);
return artistsFound;
}
private List<string> _splitWhiteList = null;
private IEnumerable<string> GetSplitWhitelist()
{
if (_splitWhiteList == null)
{
var file = GetType().Namespace + ".whitelist.txt";
using (var stream = GetType().Assembly.GetManifestResourceStream(file))
{
using (var reader = new StreamReader(stream))
{
var list = new List<string>();
while (!reader.EndOfStream)
{
var val = reader.ReadLine();
if (!string.IsNullOrWhiteSpace(val))
{
list.Add(val);
}
}
_splitWhiteList = list;
}
}
}
return _splitWhiteList;
}
/// <summary>
/// Gets the studios from the tags collection
/// </summary>
/// <param name="audio">The audio.</param>
/// <param name="tags">The tags.</param>
/// <param name="tagName">Name of the tag.</param>
private void FetchStudios(Model.MediaInfo.MediaInfo audio, Dictionary<string, string> tags, string tagName)
{
var val = FFProbeHelpers.GetDictionaryValue(tags, tagName);
if (!string.IsNullOrEmpty(val))
{
var studios = Split(val, true);
foreach (var studio in studios)
{
// Sometimes the artist name is listed here, account for that
if (audio.Artists.Contains(studio, StringComparer.OrdinalIgnoreCase))
{
continue;
}
if (audio.AlbumArtists.Contains(studio, StringComparer.OrdinalIgnoreCase))
{
continue;
}
audio.Studios.Add(studio);
}
audio.Studios = audio.Studios
.Where(i => !string.IsNullOrWhiteSpace(i))
.Distinct(StringComparer.OrdinalIgnoreCase)
.ToList();
}
}
/// <summary>
/// Gets the genres from the tags collection
/// </summary>
/// <param name="info">The information.</param>
/// <param name="tags">The tags.</param>
private void FetchGenres(Model.MediaInfo.MediaInfo info, Dictionary<string, string> tags)
{
var val = FFProbeHelpers.GetDictionaryValue(tags, "genre");
if (!string.IsNullOrEmpty(val))
{
foreach (var genre in Split(val, true))
{
info.Genres.Add(genre);
}
info.Genres = info.Genres
.Where(i => !string.IsNullOrWhiteSpace(i))
.Distinct(StringComparer.OrdinalIgnoreCase)
.ToList();
}
}
/// <summary>
/// Gets the disc number, which is sometimes can be in the form of '1', or '1/3'
/// </summary>
/// <param name="tags">The tags.</param>
/// <param name="tagName">Name of the tag.</param>
/// <returns>System.Nullable{System.Int32}.</returns>
private int? GetDictionaryDiscValue(Dictionary<string, string> tags, string tagName)
{
var disc = FFProbeHelpers.GetDictionaryValue(tags, tagName);
if (!string.IsNullOrEmpty(disc))
{
disc = disc.Split('/')[0];
int num;
if (int.TryParse(disc, out num))
{
return num;
}
}
return null;
}
private ChapterInfo GetChapterInfo(MediaChapter chapter)
{
var info = new ChapterInfo();
if (chapter.tags != null)
{
string name;
if (chapter.tags.TryGetValue("title", out name))
{
info.Name = name;
}
}
// Limit accuracy to milliseconds to match xml saving
var secondsString = chapter.start_time;
double seconds;
if (double.TryParse(secondsString, NumberStyles.Any, CultureInfo.InvariantCulture, out seconds))
{
var ms = Math.Round(TimeSpan.FromSeconds(seconds).TotalMilliseconds);
info.StartPositionTicks = TimeSpan.FromMilliseconds(ms).Ticks;
}
return info;
}
private const int MaxSubtitleDescriptionExtractionLength = 100; // When extracting subtitles, the maximum length to consider (to avoid invalid filenames)
private void FetchWtvInfo(Model.MediaInfo.MediaInfo video, InternalMediaInfoResult data)
{
if (data.format == null || data.format.tags == null)
{
return;
}
var genres = FFProbeHelpers.GetDictionaryValue(data.format.tags, "WM/Genre");
if (!string.IsNullOrWhiteSpace(genres))
{
//genres = FFProbeHelpers.GetDictionaryValue(data.format.tags, "genre");
}
if (!string.IsNullOrWhiteSpace(genres))
{
video.Genres = genres.Split(new[] { ';', '/', ',' }, StringSplitOptions.RemoveEmptyEntries)
.Where(i => !string.IsNullOrWhiteSpace(i))
.Select(i => i.Trim())
.ToList();
}
var officialRating = FFProbeHelpers.GetDictionaryValue(data.format.tags, "WM/ParentalRating");
if (!string.IsNullOrWhiteSpace(officialRating))
{
video.OfficialRating = officialRating;
}
var people = FFProbeHelpers.GetDictionaryValue(data.format.tags, "WM/MediaCredits");
if (!string.IsNullOrEmpty(people))
{
video.People = people.Split(new[] { ';', '/' }, StringSplitOptions.RemoveEmptyEntries)
.Where(i => !string.IsNullOrWhiteSpace(i))
.Select(i => new BaseItemPerson { Name = i.Trim(), Type = PersonType.Actor })
.ToList();
}
var year = FFProbeHelpers.GetDictionaryValue(data.format.tags, "WM/OriginalReleaseTime");
if (!string.IsNullOrWhiteSpace(year))
{
int val;
if (int.TryParse(year, NumberStyles.Integer, _usCulture, out val))
{
video.ProductionYear = val;
}
}
var premiereDateString = FFProbeHelpers.GetDictionaryValue(data.format.tags, "WM/MediaOriginalBroadcastDateTime");
if (!string.IsNullOrWhiteSpace(premiereDateString))
{
DateTime val;
// Credit to MCEBuddy: https://mcebuddy2x.codeplex.com/
// DateTime is reported along with timezone info (typically Z i.e. UTC hence assume None)
if (DateTime.TryParse(year, null, DateTimeStyles.None, out val))
{
video.PremiereDate = val.ToUniversalTime();
}
}
var description = FFProbeHelpers.GetDictionaryValue(data.format.tags, "WM/SubTitleDescription");
var subTitle = FFProbeHelpers.GetDictionaryValue(data.format.tags, "WM/SubTitle");
// For below code, credit to MCEBuddy: https://mcebuddy2x.codeplex.com/
// Sometimes for TV Shows the Subtitle field is empty and the subtitle description contains the subtitle, extract if possible. See ticket https://mcebuddy2x.codeplex.com/workitem/1910
// The format is -> EPISODE/TOTAL_EPISODES_IN_SEASON. SUBTITLE: DESCRIPTION
// OR -> COMMENT. SUBTITLE: DESCRIPTION
// e.g. -> 4/13. The Doctor's Wife: Science fiction drama. When he follows a Time Lord distress signal, the Doctor puts Amy, Rory and his beloved TARDIS in grave danger. Also in HD. [AD,S]
// e.g. -> CBeebies Bedtime Hour. The Mystery: Animated adventures of two friends who live on an island in the middle of the big city. Some of Abney and Teal's favourite objects are missing. [S]
if (String.IsNullOrWhiteSpace(subTitle) && !String.IsNullOrWhiteSpace(description) && description.Substring(0, Math.Min(description.Length, MaxSubtitleDescriptionExtractionLength)).Contains(":")) // Check within the Subtitle size limit, otherwise from description it can get too long creating an invalid filename
{
string[] parts = description.Split(':');
if (parts.Length > 0)
{
string subtitle = parts[0];
try
{
if (subtitle.Contains("/")) // It contains a episode number and season number
{
string[] numbers = subtitle.Split(' ');
video.IndexNumber = int.Parse(numbers[0].Replace(".", "").Split('/')[0]);
int totalEpisodesInSeason = int.Parse(numbers[0].Replace(".", "").Split('/')[1]);
description = String.Join(" ", numbers, 1, numbers.Length - 1).Trim(); // Skip the first, concatenate the rest, clean up spaces and save it
}
else
throw new Exception(); // Switch to default parsing
}
catch // Default parsing
{
if (subtitle.Contains(".")) // skip the comment, keep the subtitle
description = String.Join(".", subtitle.Split('.'), 1, subtitle.Split('.').Length - 1).Trim(); // skip the first
else
description = subtitle.Trim(); // Clean up whitespaces and save it
}
}
}
if (!string.IsNullOrWhiteSpace(description))
{
video.Overview = description;
}
}
private void ExtractTimestamp(MediaInfo video)
{
if (video.VideoType == VideoType.VideoFile)
{
if (string.Equals(video.Container, "mpeg2ts", StringComparison.OrdinalIgnoreCase) ||
string.Equals(video.Container, "m2ts", StringComparison.OrdinalIgnoreCase) ||
string.Equals(video.Container, "ts", StringComparison.OrdinalIgnoreCase))
{
try
{
video.Timestamp = GetMpegTimestamp(video.Path);
_logger.Debug("Video has {0} timestamp", video.Timestamp);
}
catch (Exception ex)
{
_logger.ErrorException("Error extracting timestamp info from {0}", ex, video.Path);
video.Timestamp = null;
}
}
}
}
private TransportStreamTimestamp GetMpegTimestamp(string path)
{
var packetBuffer = new byte['Å'];
using (var fs = _fileSystem.GetFileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read))
{
fs.Read(packetBuffer, 0, packetBuffer.Length);
}
if (packetBuffer[0] == 71)
{
return TransportStreamTimestamp.None;
}
if ((packetBuffer[4] == 71) && (packetBuffer['Ä'] == 71))
{
if ((packetBuffer[0] == 0) && (packetBuffer[1] == 0) && (packetBuffer[2] == 0) && (packetBuffer[3] == 0))
{
return TransportStreamTimestamp.Zero;
}
return TransportStreamTimestamp.Valid;
}
return TransportStreamTimestamp.None;
}
}
}