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avutil/opt: preserve fractions in set_string_number()

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This avoids going over a double precission float, which may loose precission

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-02-18 21:43:57 +01:00
parent 3e70c7023e
commit 8f853159f6
2 changed files with 10 additions and 1 deletions
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9
libavutil/opt.c
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@ -195,6 +195,15 @@ static int set_string(void *obj, const AVOption *o, const char *val, uint8_t **d
static int set_string_number(void *obj, void *target_obj, const AVOption *o, const char *val, void *dst) static int set_string_number(void *obj, void *target_obj, const AVOption *o, const char *val, void *dst)
{ {
int ret = 0, notfirst = 0; int ret = 0, notfirst = 0;
int num, den;
char c;
if (sscanf(val, "%d%*1[:/]%d%c", &num, &den, &c) == 2) {
if ((ret = write_number(obj, o, dst, 1, den, num)) >= 0)
return ret;
ret = 0;
}
for (;;) { for (;;) {
int i, den = 1; int i, den = 1;
char buf[256]; char buf[256];

2
tests/ref/fate/zmbv-8bit
View File

@ -1,4 +1,4 @@
#tb 0: 15967/1119068 #tb 0: 1000000/70086303
0, 0, 0, 1, 192000, 0x5234b617 0, 0, 0, 1, 192000, 0x5234b617
0, 1, 1, 1, 192000, 0x5234b617 0, 1, 1, 1, 192000, 0x5234b617
0, 2, 2, 1, 192000, 0x5234b617 0, 2, 2, 1, 192000, 0x5234b617