public static IEnumerable <string> GetAudioLanguages(this IPlayableContent playableContent, string defaultAudioLanguage)
{
var languageCode = playableContent.GetPreferredAudioLanguage(defaultAudioLanguage);
var languageCodes = new List <string> {
languageCode
};
var languageCodeShort = LanguageCodes.GetTwoLetterCode(languageCode);
if (!string.IsNullOrWhiteSpace(languageCodeShort))
{
languageCodes.Add(languageCodeShort);
}
if (languageCode != LanguageCodes.English)
{
languageCodes.Add(LanguageCodes.English);
languageCodes.Add(LanguageCodes.GetTwoLetterCode(LanguageCodes.English));
}
return(languageCodes);
}
