virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-02-04 06:08:26 +02:00
Code Issues Releases Activity

x86: fix overflow in h264 8x8 planar prediction

Browse Source 
Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Mans Rullgard 2011-01-24 23:24:28 +00:00
parent e63dd5fb04
commit 80944df720
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
libavcodec/x86/h264_intrapred.asm
View File

@ -637,10 +637,6 @@ cglobal pred8x8_plane_%1, 2, 7, %2
%endif %endif
paddw m0, m1 ; sum of H coefficients paddw m0, m1 ; sum of H coefficients
pmullw m0, [pw_17]
paddw m0, [pw_16]
psraw m0, 5
lea r4, [r0+r2*4-1] lea r4, [r0+r2*4-1]
lea r3, [r0 -1] lea r3, [r0 -1]
add r4, r2 add r4, r2
@ -694,6 +690,10 @@ cglobal pred8x8_plane_%1, 2, 7, %2
shl r3, 4 shl r3, 4
movd r1d, m0 movd r1d, m0
movsx r1d, r1w movsx r1d, r1w
imul r1d, 17
add r1d, 16
sar r1d, 5
movd m0, r1d
add r1d, r5d add r1d, r5d
sub r3d, r1d sub r3d, r1d
add r1d, r1d add r1d, r1d