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avoptions: Add an av_opt_flag_is_set function for inspecting flag fields

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Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö
2011-05-27 22:21:40 +03:00
parent 0558e266a2
commit cb7c11cc9e
4 changed files with 24 additions and 1 deletions
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10
libavutil/opt.c
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@@ -320,6 +320,16 @@ int64_t av_get_int(void *obj, const char *name, const AVOption **o_out)
return num*intnum/den;
}
int av_opt_flag_is_set(void *obj, const char *field_name, const char *flag_name)
{
const AVOption *field = av_find_opt(obj, field_name, NULL, 0, 0);
const AVOption *flag = av_find_opt(obj, flag_name, NULL, 0, 0);
if (!field || !flag || flag->type != FF_OPT_TYPE_CONST)
return 0;
return av_get_int(obj, field_name, NULL) & (int) flag->default_val.dbl;
}
static void opt_list(void *obj, void *av_log_obj, const char *unit,
int req_flags, int rej_flags)
{