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@@ -1,5 +1,6 @@
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using System;
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using System.Collections.Generic;
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+using System.Globalization;
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using System.IO;
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using System.Linq;
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using MediaBrowser.Common.MediaInfo;
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@@ -117,5 +118,239 @@ namespace MediaBrowser.Controller.MediaInfo
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return type;
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}
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+
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+ public static IEnumerable<MediaStream> GetMediaStreams(MediaInfoResult data)
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+ {
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+ var internalStreams = data.streams ?? new MediaStreamInfo[] { };
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+
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+ return internalStreams.Select(s => GetMediaStream(s, data.format))
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+ .Where(i => i != null);
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+ }
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+
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+ private static readonly CultureInfo UsCulture = new CultureInfo("en-US");
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+
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+ /// <summary>
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+ /// Converts ffprobe stream info to our MediaStream class
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+ /// </summary>
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+ /// <param name="streamInfo">The stream info.</param>
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+ /// <param name="formatInfo">The format info.</param>
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+ /// <returns>MediaStream.</returns>
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+ private static MediaStream GetMediaStream(MediaStreamInfo streamInfo, MediaFormatInfo formatInfo)
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+ {
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+ var stream = new MediaStream
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+ {
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+ Codec = streamInfo.codec_name,
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+ Profile = streamInfo.profile,
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+ Level = streamInfo.level,
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+ Index = streamInfo.index
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+ };
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+
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+ if (streamInfo.tags != null)
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+ {
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+ stream.Language = GetDictionaryValue(streamInfo.tags, "language");
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+ }
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+
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+ if (string.Equals(streamInfo.codec_type, "audio", StringComparison.OrdinalIgnoreCase))
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+ {
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+ stream.Type = MediaStreamType.Audio;
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+
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+ stream.Channels = streamInfo.channels;
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+
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+ if (!string.IsNullOrEmpty(streamInfo.sample_rate))
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+ {
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+ stream.SampleRate = int.Parse(streamInfo.sample_rate, UsCulture);
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+ }
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+
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+ stream.ChannelLayout = ParseChannelLayout(streamInfo.channel_layout);
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+ }
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+ else if (string.Equals(streamInfo.codec_type, "subtitle", StringComparison.OrdinalIgnoreCase))
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+ {
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+ stream.Type = MediaStreamType.Subtitle;
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+ }
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+ else if (string.Equals(streamInfo.codec_type, "video", StringComparison.OrdinalIgnoreCase))
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+ {
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+ stream.Type = MediaStreamType.Video;
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+
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+ stream.Width = streamInfo.width;
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+ stream.Height = streamInfo.height;
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+ stream.AspectRatio = GetAspectRatio(streamInfo);
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+
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+ stream.AverageFrameRate = GetFrameRate(streamInfo.avg_frame_rate);
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+ stream.RealFrameRate = GetFrameRate(streamInfo.r_frame_rate);
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+ }
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+ else
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+ {
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+ return null;
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+ }
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+
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+ // Get stream bitrate
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+ if (stream.Type != MediaStreamType.Subtitle)
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+ {
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+ var bitrate = 0;
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+
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+ if (!string.IsNullOrEmpty(streamInfo.bit_rate))
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+ {
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+ bitrate = int.Parse(streamInfo.bit_rate, UsCulture);
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+ }
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+ else if (formatInfo != null && !string.IsNullOrEmpty(formatInfo.bit_rate))
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+ {
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+ // If the stream info doesn't have a bitrate get the value from the media format info
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+ bitrate = int.Parse(formatInfo.bit_rate, UsCulture);
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+ }
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+
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+ if (bitrate > 0)
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+ {
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+ stream.BitRate = bitrate;
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+ }
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+ }
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+
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+ if (streamInfo.disposition != null)
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+ {
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+ var isDefault = GetDictionaryValue(streamInfo.disposition, "default");
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+ var isForced = GetDictionaryValue(streamInfo.disposition, "forced");
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+
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+ stream.IsDefault = string.Equals(isDefault, "1", StringComparison.OrdinalIgnoreCase);
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+
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+ stream.IsForced = string.Equals(isForced, "1", StringComparison.OrdinalIgnoreCase);
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+ }
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+
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+ return stream;
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+ }
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+
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+ /// <summary>
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+ /// Gets a string from an FFProbeResult tags dictionary
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+ /// </summary>
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+ /// <param name="tags">The tags.</param>
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+ /// <param name="key">The key.</param>
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+ /// <returns>System.String.</returns>
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+ private 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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+
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+ string val;
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+
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+ tags.TryGetValue(key, out val);
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+ return val;
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+ }
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+
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+ private static string ParseChannelLayout(string input)
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+ {
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+ if (string.IsNullOrEmpty(input))
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+ {
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+ return input;
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+ }
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+
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+ return input.Split('(').FirstOrDefault();
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+ }
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+
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+ private static string GetAspectRatio(MediaStreamInfo info)
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+ {
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+ var original = info.display_aspect_ratio;
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+
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+ int height;
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+ int width;
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+
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+ var parts = (original ?? string.Empty).Split(':');
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+ if (!(parts.Length == 2 &&
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+ int.TryParse(parts[0], NumberStyles.Any, UsCulture, out width) &&
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+ int.TryParse(parts[1], NumberStyles.Any, UsCulture, out height) &&
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+ width > 0 &&
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+ height > 0))
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+ {
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+ width = info.width;
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+ height = info.height;
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+ }
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+
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+ if (width > 0 && height > 0)
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+ {
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+ double ratio = width;
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+ ratio /= height;
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+
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+ if (IsClose(ratio, 1.777777778, .03))
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+ {
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+ return "16:9";
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+ }
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+
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+ if (IsClose(ratio, 1.3333333333, .05))
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+ {
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+ return "4:3";
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+ }
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+
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+ if (IsClose(ratio, 1.41))
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+ {
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+ return "1.41:1";
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+ }
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+
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+ if (IsClose(ratio, 1.5))
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+ {
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+ return "1.5:1";
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+ }
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+
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+ if (IsClose(ratio, 1.6))
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+ {
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+ return "1.6:1";
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+ }
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+
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+ if (IsClose(ratio, 1.66666666667))
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+ {
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+ return "5:3";
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+ }
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+
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+ if (IsClose(ratio, 1.85, .02))
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+ {
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+ return "1.85:1";
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+ }
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+
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+ if (IsClose(ratio, 2.35, .025))
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+ {
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+ return "2.35:1";
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+ }
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+
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+ if (IsClose(ratio, 2.4, .025))
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+ {
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+ return "2.40:1";
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+ }
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+ }
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+
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+ return original;
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+ }
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+
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+ private static bool IsClose(double d1, double d2, double variance = .005)
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+ {
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+ return Math.Abs(d1 - d2) <= variance;
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+ }
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+
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+ /// <summary>
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+ /// Gets a frame rate from a string value in ffprobe output
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+ /// This could be a number or in the format of 2997/125.
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+ /// </summary>
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+ /// <param name="value">The value.</param>
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+ /// <returns>System.Nullable{System.Single}.</returns>
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+ private static float? GetFrameRate(string value)
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+ {
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+ if (!string.IsNullOrEmpty(value))
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+ {
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+ var parts = value.Split('/');
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+
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+ float result;
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+
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+ if (parts.Length == 2)
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+ {
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+ result = float.Parse(parts[0], UsCulture) / float.Parse(parts[1], UsCulture);
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+ }
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+ else
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+ {
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+ result = float.Parse(parts[0], UsCulture);
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+ }
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+
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+ return float.IsNaN(result) ? (float?)null : result;
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+ }
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+
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+ return null;
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+ }
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+
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}
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}
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