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Avoid dividing by 0 in vp8 gf_group bits compute
author
Debargha Mukherjee
<debargha@google.com>
Mon, 2 Dec 2019 22:49:50 +0000
(14:49 -0800)
committer
Debargha Mukherjee
<debargha@google.com>
Mon, 2 Dec 2019 22:49:50 +0000
(14:49 -0800)
BUG=webm:1653
Change-Id: Ic59fe5e573f08dbca678d3927d4a750ae75f903c
vp8/encoder/firstpass.c
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diff --git
a/vp8/encoder/firstpass.c
b/vp8/encoder/firstpass.c
index
72c9642
..
981c0fd
100644
(file)
--- a/
vp8/encoder/firstpass.c
+++ b/
vp8/encoder/firstpass.c
@@
-2072,9
+2072,10
@@
static void define_gf_group(VP8_COMP *cpi, FIRSTPASS_STATS *this_frame) {
* score, otherwise it may be worse off than an "un-boosted" frame
*/
else {
+ // Avoid division by 0 by clamping cpi->twopass.kf_group_error_left to 1
int alt_gf_bits =
(int)((double)cpi->twopass.kf_group_bits * mod_frame_err /
-
DOUBLE_DIVIDE_CHECK((double)cpi->twopass.kf_group_error_left
));
+
(double)VPXMAX(cpi->twopass.kf_group_error_left, 1
));
if (alt_gf_bits > gf_bits) {
gf_bits = alt_gf_bits;