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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?.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 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);
}
}
}
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