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Change to use correct check for halfpel

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In motion estimation stage for subpel motion, subpel variance is
computed use bilinear interpolation. The motion vector precision
used is at 1/8 pel and three bits are used to represent the x and y
subpel offsets. Based on this, the half pel check should be against
4, not 8.

Change-Id: I1f56fa1fa3f2f5e19a20d27983efe628557f170e
This commit is contained in:
Yaowu Xu
2016-05-11 13:52:59 -07:00
parent a45596cff7
commit 17fae3ad0a
1 changed files with 4 additions and 4 deletions
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8
vpx_dsp/x86/subpel_variance_sse2.asm
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@@ -274,7 +274,7 @@ SECTION .text
STORE_AND_RET STORE_AND_RET
.x_zero_y_nonzero: .x_zero_y_nonzero:
cmp y_offsetd, 8 cmp y_offsetd, 4
jne .x_zero_y_nonhalf jne .x_zero_y_nonhalf
; x_offset == 0 && y_offset == 0.5 ; x_offset == 0 && y_offset == 0.5
@@ -478,7 +478,7 @@ SECTION .text
STORE_AND_RET STORE_AND_RET
.x_nonzero: .x_nonzero:
cmp x_offsetd, 8 cmp x_offsetd, 4
jne .x_nonhalf jne .x_nonhalf
; x_offset == 0.5 ; x_offset == 0.5
test y_offsetd, y_offsetd test y_offsetd, y_offsetd
@@ -546,7 +546,7 @@ SECTION .text
STORE_AND_RET STORE_AND_RET
.x_half_y_nonzero: .x_half_y_nonzero:
cmp y_offsetd, 8 cmp y_offsetd, 4
jne .x_half_y_nonhalf jne .x_half_y_nonhalf
; x_offset == 0.5 && y_offset == 0.5 ; x_offset == 0.5 && y_offset == 0.5
@@ -921,7 +921,7 @@ SECTION .text
STORE_AND_RET STORE_AND_RET
.x_nonhalf_y_nonzero: .x_nonhalf_y_nonzero:
cmp y_offsetd, 8 cmp y_offsetd, 4
jne .x_nonhalf_y_nonhalf jne .x_nonhalf_y_nonhalf
; x_offset == bilin interpolation && y_offset == 0.5 ; x_offset == bilin interpolation && y_offset == 0.5