TYPEMAP
Video_FFmpeg_AVFormat *			T_PTROBJ_SPECIAL
Video_FFmpeg_AVStream *	T_PTROBJ_SPECIAL
Video_FFmpeg_AVStream_Audio *		T_PTROBJ_SPECIAL
Video_FFmpeg_AVStream_Video *		T_PTROBJ_SPECIAL
Video_FFmpeg_AVStream_Subtitle *		T_PTROBJ_SPECIAL
Video_FFmpeg_Data *		T_PTROBJ_SPECIAL
Video_FFmpeg_Attachment *	T_PTROBJ_SPECIAL

INPUT
T_PTROBJ_SPECIAL
	if (sv_derived_from($arg, \"${(my $ntt=$ntype)=~s/_/::/g;$ntt=~s/Ptr$//;\$ntt}\")) {
		IV tmp = SvIV((SV*)SvRV($arg));
		$var = ($type) tmp;
	} else {
		croak(\"$var is not of type ${(my $ntt=$ntype)=~s/_/::/g;$ntt=~s/Ptr$//;\$ntt}\");
	};

OUTPUT
T_PTROBJ_SPECIAL
		sv_setref_pv($arg, \"${(my $ntt=$ntype)=~s/_/::/g;$ntt=~s/Ptr$//;\$ntt}\",
		(void*)$var);