virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

swscale/input: Fix several invalid shifts related to rgb2yuv constants

Browse Source 
Fixes: Invalid shifts
Fixes: #8140
Fixes: #8146

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit d48e510124)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2020-01-21 22:52:19 +01:00
parent b1e6aaa735
commit 23a0acd4d1
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
libswscale/input.c
View File

@ -286,8 +286,8 @@ static av_always_inline void rgb16_32ToUV_c_template(int16_t *dstU,
int gsh, int bsh, int S,
int32_t *rgb2yuv)
{
const int ru = rgb2yuv[RU_IDX] << rsh, gu = rgb2yuv[GU_IDX] << gsh, bu = rgb2yuv[BU_IDX] << bsh,
rv = rgb2yuv[RV_IDX] << rsh, gv = rgb2yuv[GV_IDX] << gsh, bv = rgb2yuv[BV_IDX] << bsh;
const int ru = rgb2yuv[RU_IDX] * (1 << rsh), gu = rgb2yuv[GU_IDX] * (1 << gsh), bu = rgb2yuv[BU_IDX] * (1 << bsh),
rv = rgb2yuv[RV_IDX] * (1 << rsh), gv = rgb2yuv[GV_IDX] * (1 << gsh), bv = rgb2yuv[BV_IDX] * (1 << bsh);
const unsigned rnd = (256u<<((S)-1)) + (1<<(S-7));
int i;
@ -314,8 +314,8 @@ static av_always_inline void rgb16_32ToUV_half_c_template(int16_t *dstU,
int gsh, int bsh, int S,
int32_t *rgb2yuv)
{
const int ru = rgb2yuv[RU_IDX] << rsh, gu = rgb2yuv[GU_IDX] << gsh, bu = rgb2yuv[BU_IDX] << bsh,
rv = rgb2yuv[RV_IDX] << rsh, gv = rgb2yuv[GV_IDX] << gsh, bv = rgb2yuv[BV_IDX] << bsh,
const int ru = rgb2yuv[RU_IDX] * (1 << rsh), gu = rgb2yuv[GU_IDX] * (1 << gsh), bu = rgb2yuv[BU_IDX] * (1 << bsh),
rv = rgb2yuv[RV_IDX] * (1 << rsh), gv = rgb2yuv[GV_IDX] * (1 << gsh), bv = rgb2yuv[BV_IDX] * (1 << bsh),
maskgx = ~(maskr | maskb);
const unsigned rnd = (256U<<(S)) + (1<<(S-6));
int i;