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#nullable disable
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)
{
if (result == null)
{
throw new ArgumentNullException(nameof(result));
}
if (result.Format != null && result.Format.Tags != null)
{
result.Format.Tags = ConvertDictionaryToCaseInsensitive(result.Format.Tags);
}
if (result.Streams != null)
{
// Convert all dictionaries to case insensitive
foreach (var stream in result.Streams)
{
if (stream.Tags != null)
{
stream.Tags = ConvertDictionaryToCaseInsensitive(stream.Tags);
}
}
}
}
/// <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>
public static string GetDictionaryValue(IReadOnlyDictionary<string, string> tags, string key)
{
if (tags == null)
{
return null;
}
tags.TryGetValue(key, out var val);
return val;
}
/// <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(Dictionary<string, string> tags, string key)
{
var val = GetDictionaryValue(tags, key);
if (!string.IsNullOrEmpty(val))
{
if (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(Dictionary<string, string> tags, string key)
{
var val = GetDictionaryValue(tags, key);
if (string.IsNullOrEmpty(val))
{
return null;
}
if (DateTime.TryParse(val, DateTimeFormatInfo.CurrentInfo, DateTimeStyles.AssumeUniversal, out var i))
{
return i.ToUniversalTime();
}
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);
}
}
}
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