chromium/third_party/libaom/source/libaom/common/args_helper.h

/*
 * 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 …

struct arg { … };

struct arg_enum_list { … };
#define ARG_ENUM_LIST_END …

arg_def_t;
#define ARG_DEF(s, l, v, d) …
#define ARG_DEF_ENUM(s, l, v, d, e) …
#define ARG_DEF_LIST_END …

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_