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Diffstat (limited to '')
-rw-r--r-- | third_party/aom/common/args_helper.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/third_party/aom/common/args_helper.h b/third_party/aom/common/args_helper.h new file mode 100644 index 0000000000..c86a6128d3 --- /dev/null +++ b/third_party/aom/common/args_helper.h @@ -0,0 +1,79 @@ +/* + * Copyright (c) 2020, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ + +#ifndef AOM_COMMON_ARGS_HELPER_H_ +#define AOM_COMMON_ARGS_HELPER_H_ + +#include "aom/aom_encoder.h" + +#ifdef __cplusplus +extern "C" { +#endif + +// Maximum length of the error messages for the helper functions. +#define ARG_ERR_MSG_MAX_LEN 200 + +struct arg { + char **argv; + const char *name; + const char *val; + unsigned int argv_step; + const struct arg_def *def; +}; + +struct arg_enum_list { + const char *name; + int val; +}; +#define ARG_ENUM_LIST_END \ + { 0 } + +typedef struct arg_def { + const char *short_name; + const char *long_name; + int has_val; // 0: The argument must not have a value. + // 1: The argument must have a value. + // -1: The argument may or may not have a value. + const char *desc; + const struct arg_enum_list *enums; +} arg_def_t; +#define ARG_DEF(s, l, v, d) \ + { s, l, v, d, NULL } +#define ARG_DEF_ENUM(s, l, v, d, e) \ + { s, l, v, d, e } +#define ARG_DEF_LIST_END \ + { 0 } + +struct arg arg_init(char **argv); + +/* + * The helper functions below all take an optional parameter err_msg for + * error reporting. When err_msg is not NULL (must point to a buffer + * which is at least ARG_ERR_MSG_MAX_LEN bytes long), a related error message is + * stored in it if an error occurs. It will be set to an empty string if no + * error occurs. + */ +int arg_match_helper(struct arg *arg_, const struct arg_def *def, char **argv, + char *err_msg); +unsigned int arg_parse_uint_helper(const struct arg *arg, char *err_msg); +int arg_parse_int_helper(const struct arg *arg, char *err_msg); +struct aom_rational arg_parse_rational_helper(const struct arg *arg, + char *err_msg); +int arg_parse_enum_helper(const struct arg *arg, char *err_msg); +int arg_parse_enum_or_int_helper(const struct arg *arg, char *err_msg); +int arg_parse_list_helper(const struct arg *arg, int *list, int n, + char *err_msg); + +#ifdef __cplusplus +} // extern "C" +#endif + +#endif // AOM_COMMON_ARGS_HELPER_H_ |