diff options
Diffstat (limited to 'cmdutils.h')
-rw-r--r-- | cmdutils.h | 88 |
1 files changed, 88 insertions, 0 deletions
@@ -224,6 +224,94 @@ int parse_option(void *optctx, const char *opt, const char *arg, const OptionDef *options); /** + * An option extracted from the commandline. + * Cannot use AVDictionary because of options like -map which can be + * used multiple times. + */ +typedef struct Option { + const OptionDef *opt; + const char *key; + const char *val; +} Option; + +typedef struct OptionGroupDef { + /**< group name */ + const char *name; + /** + * Option to be used as group separator. Can be NULL for groups which + * are terminated by a non-option argument (e.g. ffmpeg output files) + */ + const char *sep; +} OptionGroupDef; + +typedef struct OptionGroup { + const OptionGroupDef *group_def; + const char *arg; + + Option *opts; + int nb_opts; + + AVDictionary *codec_opts; + AVDictionary *format_opts; + struct SwsContext *sws_opts; +} OptionGroup; + +/** + * A list of option groups that all have the same group type + * (e.g. input files or output files) + */ +typedef struct OptionGroupList { + const OptionGroupDef *group_def; + + OptionGroup *groups; + int nb_groups; +} OptionGroupList; + +typedef struct OptionParseContext { + OptionGroup global_opts; + + OptionGroupList *groups; + int nb_groups; + + /* parsing state */ + OptionGroup cur_group; +} OptionParseContext; + +/** + * Parse an options group and write results into optctx. + * + * @param optctx an app-specific options context. NULL for global options group + */ +int parse_optgroup(void *optctx, OptionGroup *g); + +/** + * Split the commandline into an intermediate form convenient for further + * processing. + * + * The commandline is assumed to be composed of options which either belong to a + * group (those with OPT_SPEC, OPT_OFFSET or OPT_PERFILE) or are global + * (everything else). + * + * A group (defined by an OptionGroupDef struct) is a sequence of options + * terminated by either a group separator option (e.g. -i) or a parameter that + * is not an option (doesn't start with -). A group without a separator option + * must always be first in the supplied groups list. + * + * All options within the same group are stored in one OptionGroup struct in an + * OptionGroupList, all groups with the same group definition are stored in one + * OptionGroupList in OptionParseContext.groups. The order of group lists is the + * same as the order of group definitions. + */ +int split_commandline(OptionParseContext *octx, int argc, char *argv[], + const OptionDef *options, + const OptionGroupDef *groups); + +/** + * Free all allocated memory in an OptionParseContext. + */ +void uninit_parse_context(OptionParseContext *octx); + +/** * Find the '-loglevel' option in the command line args and apply it. */ void parse_loglevel(int argc, char **argv, const OptionDef *options); |