Function parse_number

fftools/cmdutils.c:84–105

}

int parse_number(const char *context, const char *numstr, enum OptionType type,
                 double min, double max, double *dst)
{
    char *tail;
    const char *error;
    double d = av_strtod(numstr, &tail);
    if (*tail)
        error = "Expected number for %s but found: %s\n";
    else if (d < min || d > max)
        error = "The value for %s was %s which is not within %f - %f\n";
    else if (type == OPT_TYPE_INT64 && (int64_t)d != d)
        error = "Expected int64 for %s but found %s\n";
    else if (type == OPT_TYPE_INT && (int)d != d)
        error = "Expected int for %s but found %s\n";
    else {
        *dst = d;
        return 0;
    }

    av_log(NULL, AV_LOG_FATAL, error, context, numstr, min, max);
    return AVERROR(EINVAL);
}

void show_help_options(const OptionDef *options, const char *msg, int req_flags,
                       int rej_flags)