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avutil/opt: print more meaningful default flags values

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Example:
% ./ffmpeg -h encoder=gif
[...]
GIF encoder AVOptions:
  -gifflags          <flags>      E..V.... set GIF flags (default offsetting+transdiff)
     offsetting                   E..V.... enable picture offsetting
     transdiff                    E..V.... enable transparency detection between frames
This commit is contained in:
Clément Bœsch 2015-10-24 15:14:33 +02:00
parent 559603dae1
commit 6b5412cbfa
2 changed files with 31 additions and 3 deletions
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32
libavutil/opt.c
View File

@ -941,6 +941,27 @@ static const char *get_opt_const_name(void *obj, const char *unit, int64_t value
return NULL;
}
static char *get_opt_flags_string(void *obj, const char *unit, int64_t value)
{
const AVOption *opt = NULL;
char flags[512];
flags[0] = 0;
if (!unit)
return NULL;
while ((opt = av_opt_next(obj, opt))) {
if (opt->type == AV_OPT_TYPE_CONST && !strcmp(opt->unit, unit) &&
opt->default_val.i64 & value) {
if (flags[0])
av_strlcatf(flags, sizeof(flags), "+");
av_strlcatf(flags, sizeof(flags), "%s", opt->name);
}
}
if (flags[0])
return av_strdup(flags);
return NULL;
}
static void opt_list(void *obj, void *av_log_obj, const char *unit,
int req_flags, int rej_flags)
{
@ -1066,9 +1087,16 @@ static void opt_list(void *obj, void *av_log_obj, const char *unit,
case AV_OPT_TYPE_BOOL:
av_log(av_log_obj, AV_LOG_INFO, "%s", (char *)av_x_if_null(get_bool_name(opt->default_val.i64), "invalid"));
break;
case AV_OPT_TYPE_FLAGS:
av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);
case AV_OPT_TYPE_FLAGS: {
char *def_flags = get_opt_flags_string(obj, opt->unit, opt->default_val.i64);
if (def_flags) {
av_log(av_log_obj, AV_LOG_INFO, "%s", def_flags);
av_freep(&def_flags);
} else {
av_log(av_log_obj, AV_LOG_INFO, "%"PRIX64, opt->default_val.i64);
}
break;
}
case AV_OPT_TYPE_DURATION:
log_value(av_log_obj, AV_LOG_INFO, opt->default_val.i64);
break;

2
tests/ref/fate/opt
View File

@ -23,7 +23,7 @@ TestContext AVOptions:
-rational <rational> E....... set rational (from 0 to 10) (default 1/1)
-string <string> E....... set string (default "default")
-escape <string> E....... set escape str (default "\=,")
-flags <flags> E....... set flags (default 1)
-flags <flags> E....... set flags (default cool)
cool E....... set cool flag
lame E....... set lame flag
mu E....... set mu flag