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AVOptions: refactor set_number/write_number

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write_number() does the actual writing of the supplied
number to destination. Move finding the option and choosing destination
address out of it.
This commit is contained in:
Anton Khirnov 2011-08-23 12:58:49 +02:00
parent cf10095f0b
commit 7bb1807c2d
1 changed files with 11 additions and 14 deletions
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25
libavutil/opt.c
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@ -54,22 +54,13 @@ const AVOption *av_next_option(void *obj, const AVOption *last)
else return (*(AVClass**)obj)->option;
}
static int write_number(void *obj, const char *name, double num, int den, int64_t intnum, const AVOption **o_out)
static int write_number(void *obj, const AVOption *o, void *dst, double num, int den, int64_t intnum)
{
const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
void *dst;
if (o_out)
*o_out= o;
if (!o)
return AVERROR_OPTION_NOT_FOUND;
if (o->max*den < num*intnum || o->min*den > num*intnum) {
av_log(obj, AV_LOG_ERROR, "Value %lf for parameter '%s' out of range\n", num, name);
av_log(obj, AV_LOG_ERROR, "Value %lf for parameter '%s' out of range\n", num, o->name);
return AVERROR(ERANGE);
}
dst= ((uint8_t*)obj) + o->offset;
switch (o->type) {
case FF_OPT_TYPE_FLAGS:
case FF_OPT_TYPE_INT: *(int *)dst= llrint(num/den)*intnum; break;
@ -184,7 +175,7 @@ static int set_string_number(void *obj, const AVOption *o, const char *val, void
else if (cmd == '-') d = notfirst*av_get_double(obj, o->name, NULL) - d;
}
if ((ret = write_number(obj, o->name, d, 1, 1, NULL)) < 0)
if ((ret = write_number(obj, o, dst, d, 1, 1)) < 0)
return ret;
val += i;
if (!*val)
@ -224,8 +215,14 @@ int av_set_string3(void *obj, const char *name, const char *val, int alloc, cons
static const AVOption *set_number(void *obj, const char *name, double num, int den, int64_t intnum)
{
const AVOption *o = NULL;
if (write_number(obj, name, num, den, intnum, &o) < 0)
const AVOption *o = av_opt_find(obj, name, NULL, 0, 0);
void *dst;
if (!o)
return NULL;
dst = ((uint8_t*)obj) + o->offset;
if (write_number(obj, o, dst, num, den, intnum) < 0)
return NULL;
else
return o;