259 lines
8.2 KiB
C#
259 lines
8.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.IO;
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using System.Linq;
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using System.Threading.Tasks;
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using MediaBrowser.Controller.Events;
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using MediaBrowser.Controller.FFMpeg;
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using MediaBrowser.Model.Entities;
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namespace MediaBrowser.Controller.Providers
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{
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[Export(typeof(BaseMetadataProvider))]
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public class AudioInfoProvider : BaseMetadataProvider
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{
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public override bool Supports(BaseEntity item)
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{
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return item is Audio;
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}
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public override MetadataProviderPriority Priority
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{
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get { return MetadataProviderPriority.First; }
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}
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public async override Task FetchAsync(BaseEntity item, ItemResolveEventArgs args)
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{
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Audio audio = item as Audio;
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Fetch(audio, await FFProbe.Run(audio, GetFFProbeOutputPath(item)).ConfigureAwait(false));
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}
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private string GetFFProbeOutputPath(BaseEntity item)
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{
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string outputDirectory = Path.Combine(Kernel.Instance.ApplicationPaths.FFProbeAudioCacheDirectory, item.Id.ToString().Substring(0, 1));
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return Path.Combine(outputDirectory, item.Id + "-" + item.DateModified.Ticks + ".js");
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}
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private void Fetch(Audio audio, FFProbeResult data)
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{
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MediaStream stream = data.streams.First(s => s.codec_type.Equals("audio", StringComparison.OrdinalIgnoreCase));
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string bitrate = null;
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string duration = null;
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audio.Channels = stream.channels;
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if (!string.IsNullOrEmpty(stream.sample_rate))
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{
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audio.SampleRate = int.Parse(stream.sample_rate);
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}
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bitrate = stream.bit_rate;
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duration = stream.duration;
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if (string.IsNullOrEmpty(bitrate))
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{
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bitrate = data.format.bit_rate;
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}
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if (string.IsNullOrEmpty(duration))
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{
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duration = data.format.duration;
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}
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if (!string.IsNullOrEmpty(bitrate))
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{
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audio.BitRate = int.Parse(bitrate);
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}
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if (!string.IsNullOrEmpty(duration))
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{
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audio.RunTimeTicks = TimeSpan.FromSeconds(double.Parse(duration)).Ticks;
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}
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if (data.format.tags != null)
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{
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FetchDataFromTags(audio, data.format.tags);
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}
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}
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private void FetchDataFromTags(Audio audio, Dictionary<string, string> tags)
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{
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string title = GetDictionaryValue(tags, "title");
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if (!string.IsNullOrEmpty(title))
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{
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audio.Name = title;
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}
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string composer = GetDictionaryValue(tags, "composer");
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if (!string.IsNullOrEmpty(composer))
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{
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var list = (audio.People ?? new PersonInfo[] { }).ToList();
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list.Add(new PersonInfo() { Name = composer, Type = "Composer" });
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audio.People = list;
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}
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audio.Album = GetDictionaryValue(tags, "album");
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audio.Artist = GetDictionaryValue(tags, "artist");
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audio.AlbumArtist = GetDictionaryValue(tags, "albumartist") ?? GetDictionaryValue(tags, "album artist") ?? GetDictionaryValue(tags, "album_artist");
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audio.IndexNumber = GetDictionaryNumericValue(tags, "track");
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audio.ParentIndexNumber = GetDictionaryDiscValue(tags);
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audio.Language = GetDictionaryValue(tags, "language");
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audio.ProductionYear = GetDictionaryNumericValue(tags, "date");
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audio.PremiereDate = GetDictionaryDateTime(tags, "retaildate") ?? GetDictionaryDateTime(tags, "retail date") ?? GetDictionaryDateTime(tags, "retail_date");
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FetchGenres(audio, tags);
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FetchStudios(audio, tags, "organization");
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FetchStudios(audio, tags, "ensemble");
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FetchStudios(audio, tags, "publisher");
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}
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private void FetchStudios(Audio audio, Dictionary<string, string> tags, string tagName)
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{
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string val = GetDictionaryValue(tags, tagName);
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if (!string.IsNullOrEmpty(val))
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{
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var list = (audio.Studios ?? new string[] { }).ToList();
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list.AddRange(val.Split('/'));
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audio.Studios = list;
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}
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}
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private void FetchGenres(Audio audio, Dictionary<string, string> tags)
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{
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string val = GetDictionaryValue(tags, "genre");
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if (!string.IsNullOrEmpty(val))
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{
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var list = (audio.Genres ?? new string[] { }).ToList();
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list.AddRange(val.Split('/'));
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audio.Genres = list;
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}
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}
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private int? GetDictionaryDiscValue(Dictionary<string, string> tags)
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{
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string disc = GetDictionaryValue(tags, "disc");
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if (!string.IsNullOrEmpty(disc))
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{
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disc = disc.Split('/')[0];
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int num;
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if (int.TryParse(disc, out num))
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{
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return num;
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}
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}
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return null;
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}
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internal static string GetDictionaryValue(Dictionary<string, string> tags, string key)
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{
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if (tags == null)
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{
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return null;
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}
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string[] keys = tags.Keys.ToArray();
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for (int i = 0; i < keys.Length; i++)
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{
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string currentKey = keys[i];
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if (key.Equals(currentKey, StringComparison.OrdinalIgnoreCase))
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{
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return tags[currentKey];
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}
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}
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return null;
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}
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private int? GetDictionaryNumericValue(Dictionary<string, string> tags, string key)
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{
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string val = GetDictionaryValue(tags, key);
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if (!string.IsNullOrEmpty(val))
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{
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int i;
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if (int.TryParse(val, out i))
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{
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return i;
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}
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}
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return null;
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}
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private DateTime? GetDictionaryDateTime(Dictionary<string, string> tags, string key)
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{
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string val = GetDictionaryValue(tags, key);
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if (!string.IsNullOrEmpty(val))
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{
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DateTime i;
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if (DateTime.TryParse(val, out i))
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{
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return i;
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}
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}
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return null;
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}
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private string GetOutputCachePath(BaseItem item)
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{
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string outputDirectory = Path.Combine(Kernel.Instance.ApplicationPaths.FFProbeAudioCacheDirectory, item.Id.ToString().Substring(0, 1));
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return Path.Combine(outputDirectory, item.Id + "-" + item.DateModified.Ticks + ".js");
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}
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public override void Init()
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{
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base.Init();
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EnsureCacheSubFolders(Kernel.Instance.ApplicationPaths.FFProbeAudioCacheDirectory);
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}
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internal static void EnsureCacheSubFolders(string root)
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{
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// Do this now so that we don't have to do this on every operation, which would require us to create a lock in order to maintain thread-safety
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for (int i = 0; i <= 9; i++)
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{
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EnsureDirectory(Path.Combine(root, i.ToString()));
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}
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EnsureDirectory(Path.Combine(root, "a"));
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EnsureDirectory(Path.Combine(root, "b"));
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EnsureDirectory(Path.Combine(root, "c"));
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EnsureDirectory(Path.Combine(root, "d"));
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EnsureDirectory(Path.Combine(root, "e"));
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EnsureDirectory(Path.Combine(root, "f"));
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}
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private static void EnsureDirectory(string path)
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{
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if (!Directory.Exists(path))
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{
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Directory.CreateDirectory(path);
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}
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}
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}
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}
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