using System; using System.Collections.Generic; using System.Globalization; namespace MediaBrowser.MediaEncoding.Probing { /// <summary> /// Class containing helper methods for working with FFprobe output. /// </summary> public static class FFProbeHelpers { /// <summary> /// Normalizes the FF probe result. /// </summary> /// <param name="result">The result.</param> public static void NormalizeFFProbeResult(InternalMediaInfoResult result) { ArgumentNullException.ThrowIfNull(result); if (result.Format?.Tags is not null) { result.Format.Tags = ConvertDictionaryToCaseInsensitive(result.Format.Tags); } if (result.Streams is not null) { // Convert all dictionaries to case insensitive foreach (var stream in result.Streams) { if (stream.Tags is not null) { stream.Tags = ConvertDictionaryToCaseInsensitive(stream.Tags); } } } } /// <summary> /// Gets an int from an FFProbeResult tags dictionary. /// </summary> /// <param name="tags">The tags.</param> /// <param name="key">The key.</param> /// <returns>System.Nullable{System.Int32}.</returns> public static int? GetDictionaryNumericValue(IReadOnlyDictionary<string, string> tags, string key) { if (tags.TryGetValue(key, out var val) && int.TryParse(val, out var i)) { return i; } return null; } /// <summary> /// Gets a DateTime from an FFProbeResult tags dictionary. /// </summary> /// <param name="tags">The tags.</param> /// <param name="key">The key.</param> /// <returns>System.Nullable{DateTime}.</returns> public static DateTime? GetDictionaryDateTime(IReadOnlyDictionary<string, string> tags, string key) { if (tags.TryGetValue(key, out var val) && (DateTime.TryParse(val, DateTimeFormatInfo.CurrentInfo, DateTimeStyles.AssumeUniversal | DateTimeStyles.AdjustToUniversal, out var dateTime) || DateTime.TryParseExact(val, "yyyy", DateTimeFormatInfo.CurrentInfo, DateTimeStyles.AssumeUniversal | DateTimeStyles.AdjustToUniversal, out dateTime))) { return dateTime; } return null; } /// <summary> /// Converts a dictionary to case insensitive. /// </summary> /// <param name="dict">The dict.</param> /// <returns>Dictionary{System.StringSystem.String}.</returns> private static Dictionary<string, string> ConvertDictionaryToCaseInsensitive(IReadOnlyDictionary<string, string> dict) { return new Dictionary<string, string>(dict, StringComparer.OrdinalIgnoreCase); } } }