private FFmpegClass(AVClass *p)
{
if (p == null)
{
throw new ArgumentNullException(nameof(p));
}
_p = p;
}
/// <summary>
/// Retrieves the options information associated with the given AVClass.
/// </summary>
/// <param name="avClass">The av class.</param>
/// <returns>A list of option metadata</returns>
public static unsafe List <OptionMeta> RetrieveOptions(AVClass *avClass)
{
// see: https://github.com/FFmpeg/FFmpeg/blob/e0f32286861ddf7666ba92297686fa216d65968e/tools/enum_options.c
var result = new List <OptionMeta>(128);
if (avClass == null)
{
return(result);
}
var option = avClass->option;
while (option != null)
{
if (option->type != AVOptionType.AV_OPT_TYPE_CONST)
{
result.Add(new OptionMeta(option));
}
option = ffmpeg.av_opt_next(avClass, option);
}
return(result);
}
public static extern void sws_printVec2(SwsVector * @a, AVClass * @log_ctx, int @log_level);
public extern static void sws_printVec2(SwsVector *a, AVClass *log_ctx, int log_level);
public static extern AVClass *av_opt_child_class_next(AVClass *parent, AVClass *prev);
public static extern void *av_opt_ptr(AVClass *avclass, void *obj, byte *name);
public static FFmpegClass?FromNativeOrNull(AVClass *p) => p != null ? new FFmpegClass(p) : null;
public static FFmpegClass FromNative(AVClass *p) => new FFmpegClass(p);
