Look for an option in obj. Look only for the options which
have the flags set as specified in mask and flags (that is,
for which it is the case that opt->flags & mask == flags).
@paramin obj a pointer to a struct whose first element is a
pointer to an AVClass
@paramin name the name of the option to look for
@paramin unit the unit of the option to look for, or any if NULL
@return a pointer to the option found, or NULL if no option
has been found
Look for an option in obj. Look only for the options which have the flags set as specified in mask and flags (that is, for which it is the case that opt->flags & mask == flags).
@paramin obj a pointer to a struct whose first element is a pointer to an AVClass @paramin name the name of the option to look for @paramin unit the unit of the option to look for, or any if NULL @return a pointer to the option found, or NULL if no option has been found
@deprecated use av_opt_find.