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Modify sub-pixel filters to eliminate unnecessary calculations 

In sub-pixel calculation, xoffset and yoffset mostly take some
specific values. Modified sub-pixel filter functions according to
these possible values to improve performance.

Change-Id: I83083570af8b00ff65093467914fbb97a4e9ea21
This commit is contained in:
Yunqing Wang 2011-01-20 13:01:30 -05:00
Родитель 06e7320c3e
Коммит 0822a62f40
2 изменённых файлов: 255 добавлений и 83 удалений
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183
vp8/encoder/x86/variance_impl_sse2.asm
Просмотреть файл

@ -493,8 +493,8 @@ sym(vp8_get8x8var_sse2):
; unsigned char *src_ptr,
; int src_pixels_per_line,
; unsigned int Height,
; unsigned short *HFilter,
; unsigned short *VFilter,
; int xoffset,
; int yoffset,
; int *sum,
; unsigned int *sumsquared;;
;
@ -504,68 +504,80 @@ sym(vp8_filter_block2d_bil_var_sse2):
push rbp
mov rbp, rsp
SHADOW_ARGS_TO_STACK 9
SAVE_XMM
GET_GOT rbx
push rsi
push rdi
sub rsp, 16
push rbx
; end prolog
pxor xmm6, xmm6 ;
pxor xmm7, xmm7 ;
mov rax, arg(5) ;HFilter ;
mov rdx, arg(6) ;VFilter ;
mov rsi, arg(0) ;ref_ptr ;
lea rsi, [GLOBAL(xmm_bi_rd)] ; rounding
movdqa xmm4, XMMWORD PTR [rsi]
mov rdi, arg(2) ;src_ptr ;
movsxd rcx, dword ptr arg(4) ;Height ;
lea rcx, [GLOBAL(vp8_bilinear_filters_sse2)]
movsxd rax, dword ptr arg(5) ; xoffset
cmp rax, 0 ; skip first_pass filter if xoffset=0
je filter_block2d_bil_var_sse2_sp_only
shl rax, 5 ; point to filter coeff with xoffset
lea rax, [rax + rcx] ; HFilter
movsxd rdx, dword ptr arg(6) ; yoffset
cmp rdx, 0 ; skip second_pass filter if yoffset=0
je filter_block2d_bil_var_sse2_fp_only
shl rdx, 5
lea rdx, [rdx + rcx] ; VFilter
mov rsi, arg(0) ;ref_ptr
mov rdi, arg(2) ;src_ptr
movsxd rcx, dword ptr arg(4) ;Height
pxor xmm0, xmm0 ;
movq xmm1, QWORD PTR [rsi] ;
movq xmm1, QWORD PTR [rsi] ;
movq xmm3, QWORD PTR [rsi+1] ;
movq xmm3, QWORD PTR [rsi+1] ;
punpcklbw xmm1, xmm0 ;
pmullw xmm1, [rax] ;
pmullw xmm1, [rax] ;
punpcklbw xmm3, xmm0
;
pmullw xmm3, [rax+16] ;
paddw xmm1, xmm3 ;
paddw xmm1, [GLOBAL(xmm_bi_rd)] ;
psraw xmm1, xmm_filter_shift ;
paddw xmm1, xmm4 ;
psraw xmm1, xmm_filter_shift ;
movdqa xmm5, xmm1
%if ABI_IS_32BIT
add rsi, dword ptr arg(1) ;ref_pixels_per_line ;
%else
movsxd r8, dword ptr arg(1) ;ref_pixels_per_line ;
add rsi, r8
%endif
filter_block2d_bil_var_sse2_loop:
movsxd rbx, dword ptr arg(1) ;ref_pixels_per_line
lea rsi, [rsi + rbx]
%if ABI_IS_32BIT=0
movsxd r9, dword ptr arg(3) ;src_pixels_per_line
%endif
filter_block2d_bil_var_sse2_loop:
movq xmm1, QWORD PTR [rsi] ;
movq xmm3, QWORD PTR [rsi+1] ;
punpcklbw xmm1, xmm0 ;
pmullw xmm1, [rax] ;
punpcklbw xmm3, xmm0 ;
pmullw xmm3, [rax+16] ;
paddw xmm1, xmm3 ;
paddw xmm1, [GLOBAL(xmm_bi_rd)] ;
paddw xmm1, xmm4 ;
psraw xmm1, xmm_filter_shift ;
movdqa xmm3, xmm5 ;
movdqa xmm5, xmm1 ;
pmullw xmm3, [rdx] ;
pmullw xmm3, [rdx] ;
pmullw xmm1, [rdx+16] ;
paddw xmm1, xmm3 ;
paddw xmm1, [GLOBAL(xmm_bi_rd)] ;
paddw xmm1, xmm4 ;
psraw xmm1, xmm_filter_shift ;
movq xmm3, QWORD PTR [rdi] ;
@ -577,20 +589,103 @@ filter_block2d_bil_var_sse2_loop:
pmaddwd xmm1, xmm1 ;
paddd xmm7, xmm1 ;
lea rsi, [rsi + rbx] ;ref_pixels_per_line
%if ABI_IS_32BIT
add rsi, dword ptr arg(1) ;ref_pixels_per_line ;
add rdi, dword ptr arg(3) ;src_pixels_per_line ;
add rdi, dword ptr arg(3) ;src_pixels_per_line
%else
movsxd r8, dword ptr arg(1) ;ref_pixels_per_line ;
movsxd r9, dword ptr arg(3) ;src_pixels_per_line ;
add rsi, r8
add rdi, r9
lea rdi, [rdi + r9]
%endif
sub rcx, 1 ;
jnz filter_block2d_bil_var_sse2_loop ;
jmp filter_block2d_bil_variance
filter_block2d_bil_var_sse2_sp_only:
movsxd rdx, dword ptr arg(6) ; yoffset
shl rdx, 5
lea rdx, [rdx + rcx] ; VFilter
mov rsi, arg(0) ;ref_ptr
mov rdi, arg(2) ;src_ptr
movsxd rcx, dword ptr arg(4) ;Height
movsxd rax, dword ptr arg(1) ;ref_pixels_per_line
pxor xmm0, xmm0 ;
movq xmm1, QWORD PTR [rsi] ;
punpcklbw xmm1, xmm0 ;
movsxd rbx, dword ptr arg(3) ;src_pixels_per_line
lea rsi, [rsi + rax]
filter_block2d_bil_sp_only_loop:
movq xmm3, QWORD PTR [rsi] ;
punpcklbw xmm3, xmm0 ;
movdqa xmm5, xmm3
pmullw xmm1, [rdx] ;
pmullw xmm3, [rdx+16] ;
paddw xmm1, xmm3 ;
paddw xmm1, xmm4 ;
psraw xmm1, xmm_filter_shift ;
movq xmm3, QWORD PTR [rdi] ;
punpcklbw xmm3, xmm0 ;
psubw xmm1, xmm3 ;
paddw xmm6, xmm1 ;
pmaddwd xmm1, xmm1 ;
paddd xmm7, xmm1 ;
movdqa xmm1, xmm5 ;
lea rsi, [rsi + rax] ;ref_pixels_per_line
lea rdi, [rdi + rbx] ;src_pixels_per_line
sub rcx, 1 ;
jnz filter_block2d_bil_sp_only_loop ;
jmp filter_block2d_bil_variance
filter_block2d_bil_var_sse2_fp_only:
mov rsi, arg(0) ;ref_ptr
mov rdi, arg(2) ;src_ptr
movsxd rcx, dword ptr arg(4) ;Height
movsxd rdx, dword ptr arg(1) ;ref_pixels_per_line
pxor xmm0, xmm0 ;
movsxd rbx, dword ptr arg(3) ;src_pixels_per_line
filter_block2d_bil_fp_only_loop:
movq xmm1, QWORD PTR [rsi] ;
movq xmm3, QWORD PTR [rsi+1] ;
punpcklbw xmm1, xmm0 ;
pmullw xmm1, [rax] ;
punpcklbw xmm3, xmm0 ;
pmullw xmm3, [rax+16] ;
paddw xmm1, xmm3 ;
paddw xmm1, xmm4 ;
psraw xmm1, xmm_filter_shift ;
movq xmm3, QWORD PTR [rdi] ;
punpcklbw xmm3, xmm0 ;
psubw xmm1, xmm3 ;
paddw xmm6, xmm1 ;
pmaddwd xmm1, xmm1 ;
paddd xmm7, xmm1 ;
lea rsi, [rsi + rdx]
lea rdi, [rdi + rbx] ;src_pixels_per_line
sub rcx, 1 ;
jnz filter_block2d_bil_fp_only_loop ;
jmp filter_block2d_bil_variance
filter_block2d_bil_variance:
movdq2q mm6, xmm6 ;
movdq2q mm7, xmm7 ;
@ -627,12 +722,12 @@ filter_block2d_bil_var_sse2_loop:
movd [rsi], mm2 ; xsum
movd [rdi], mm4 ; xxsum
; begin epilog
add rsp, 16
pop rbx
pop rdi
pop rsi
RESTORE_GOT
RESTORE_XMM
UNSHADOW_ARGS
pop rbp
ret
@ -974,3 +1069,13 @@ SECTION_RODATA
align 16
xmm_bi_rd:
times 8 dw 64
align 16
vp8_bilinear_filters_sse2:
dw 128, 128, 128, 128, 128, 128, 128, 128, 0, 0, 0, 0, 0, 0, 0, 0
dw 112, 112, 112, 112, 112, 112, 112, 112, 16, 16, 16, 16, 16, 16, 16, 16
dw 96, 96, 96, 96, 96, 96, 96, 96, 32, 32, 32, 32, 32, 32, 32, 32
dw 80, 80, 80, 80, 80, 80, 80, 80, 48, 48, 48, 48, 48, 48, 48, 48
dw 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64
dw 48, 48, 48, 48, 48, 48, 48, 48, 80, 80, 80, 80, 80, 80, 80, 80
dw 32, 32, 32, 32, 32, 32, 32, 32, 96, 96, 96, 96, 96, 96, 96, 96
dw 16, 16, 16, 16, 16, 16, 16, 16, 112, 112, 112, 112, 112, 112, 112, 112

155
vp8/encoder/x86/variance_sse2.c
Просмотреть файл

@ -76,8 +76,8 @@ void vp8_filter_block2d_bil_var_sse2
const unsigned char *src_ptr,
int src_pixels_per_line,
unsigned int Height,
const short *HFilter,
const short *VFilter,
int xoffset,
int yoffset,
int *sum,
unsigned int *sumsquared
);
@ -222,21 +222,6 @@ unsigned int vp8_variance8x16_wmt
}
///////////////////////////////////////////////////////////////////////////
// the mmx function that does the bilinear filtering and var calculation //
// int one pass //
///////////////////////////////////////////////////////////////////////////
DECLARE_ALIGNED(16, const short, vp8_bilinear_filters_xmm[8][16]) =
{
{ 128, 128, 128, 128, 128, 128, 128, 128, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 112, 112, 112, 112, 112, 112, 112, 112, 16, 16, 16, 16, 16, 16, 16, 16 },
{ 96, 96, 96, 96, 96, 96, 96, 96, 32, 32, 32, 32, 32, 32, 32, 32 },
{ 80, 80, 80, 80, 80, 80, 80, 80, 48, 48, 48, 48, 48, 48, 48, 48 },
{ 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64, 64 },
{ 48, 48, 48, 48, 48, 48, 48, 48, 80, 80, 80, 80, 80, 80, 80, 80 },
{ 32, 32, 32, 32, 32, 32, 32, 32, 96, 96, 96, 96, 96, 96, 96, 96 },
{ 16, 16, 16, 16, 16, 16, 16, 16, 112, 112, 112, 112, 112, 112, 112, 112 }
};
unsigned int vp8_sub_pixel_variance4x4_wmt
(
const unsigned char *src_ptr,
@ -272,15 +257,38 @@ unsigned int vp8_sub_pixel_variance8x8_wmt
unsigned int *sse
)
{
int xsum;
unsigned int xxsum;
vp8_filter_block2d_bil_var_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 8,
vp8_bilinear_filters_xmm[xoffset], vp8_bilinear_filters_xmm[yoffset],
&xsum, &xxsum
);
if (xoffset == 4 && yoffset == 0)
{
vp8_half_horiz_variance16x_h_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 8,
&xsum, &xxsum);
}
else if (xoffset == 0 && yoffset == 4)
{
vp8_half_vert_variance16x_h_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 8,
&xsum, &xxsum);
}
else if (xoffset == 4 && yoffset == 4)
{
vp8_half_horiz_vert_variance16x_h_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 8,
&xsum, &xxsum);
}
else
{
vp8_filter_block2d_bil_var_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 8,
xoffset, yoffset,
&xsum, &xxsum);
}
*sse = xxsum;
return (xxsum - ((xsum * xsum) >> 6));
@ -344,7 +352,7 @@ unsigned int vp8_sub_pixel_variance16x16_wmt
vp8_filter_block2d_bil_var_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 16,
vp8_bilinear_filters_xmm[xoffset], vp8_bilinear_filters_xmm[yoffset],
xoffset, yoffset,
&xsum0, &xxsum0
);
@ -352,7 +360,7 @@ unsigned int vp8_sub_pixel_variance16x16_wmt
vp8_filter_block2d_bil_var_sse2(
src_ptr + 8, src_pixels_per_line,
dst_ptr + 8, dst_pixels_per_line, 16,
vp8_bilinear_filters_xmm[xoffset], vp8_bilinear_filters_xmm[yoffset],
xoffset, yoffset,
&xsum1, &xxsum1
);
}
@ -392,21 +400,56 @@ unsigned int vp8_sub_pixel_variance16x8_wmt
int xsum0, xsum1;
unsigned int xxsum0, xxsum1;
if (xoffset == 4 && yoffset == 0)
{
vp8_half_horiz_variance16x_h_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 8,
&xsum0, &xxsum0);
vp8_filter_block2d_bil_var_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 8,
vp8_bilinear_filters_xmm[xoffset], vp8_bilinear_filters_xmm[yoffset],
&xsum0, &xxsum0
);
vp8_half_horiz_variance16x_h_sse2(
src_ptr + 8, src_pixels_per_line,
dst_ptr + 8, dst_pixels_per_line, 8,
&xsum1, &xxsum1);
}
else if (xoffset == 0 && yoffset == 4)
{
vp8_half_vert_variance16x_h_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 8,
&xsum0, &xxsum0);
vp8_half_vert_variance16x_h_sse2(
src_ptr + 8, src_pixels_per_line,
dst_ptr + 8, dst_pixels_per_line, 8,
&xsum1, &xxsum1);
}
else if (xoffset == 4 && yoffset == 4)
{
vp8_half_horiz_vert_variance16x_h_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 8,
&xsum0, &xxsum0);
vp8_filter_block2d_bil_var_sse2(
src_ptr + 8, src_pixels_per_line,
dst_ptr + 8, dst_pixels_per_line, 8,
vp8_bilinear_filters_xmm[xoffset], vp8_bilinear_filters_xmm[yoffset],
&xsum1, &xxsum1
);
vp8_half_horiz_vert_variance16x_h_sse2(
src_ptr + 8, src_pixels_per_line,
dst_ptr + 8, dst_pixels_per_line, 8,
&xsum1, &xxsum1);
}
else
{
vp8_filter_block2d_bil_var_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 8,
xoffset, yoffset,
&xsum0, &xxsum0);
vp8_filter_block2d_bil_var_sse2(
src_ptr + 8, src_pixels_per_line,
dst_ptr + 8, dst_pixels_per_line, 8,
xoffset, yoffset,
&xsum1, &xxsum1);
}
xsum0 += xsum1;
xxsum0 += xxsum1;
@ -428,12 +471,36 @@ unsigned int vp8_sub_pixel_variance8x16_wmt
{
int xsum;
unsigned int xxsum;
vp8_filter_block2d_bil_var_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 16,
vp8_bilinear_filters_xmm[xoffset], vp8_bilinear_filters_xmm[yoffset],
&xsum, &xxsum
);
if (xoffset == 4 && yoffset == 0)
{
vp8_half_horiz_variance16x_h_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 16,
&xsum, &xxsum);
}
else if (xoffset == 0 && yoffset == 4)
{
vp8_half_vert_variance16x_h_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 16,
&xsum, &xxsum);
}
else if (xoffset == 4 && yoffset == 4)
{
vp8_half_horiz_vert_variance16x_h_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 16,
&xsum, &xxsum);
}
else
{
vp8_filter_block2d_bil_var_sse2(
src_ptr, src_pixels_per_line,
dst_ptr, dst_pixels_per_line, 16,
xoffset, yoffset,
&xsum, &xxsum);
}
*sse = xxsum;
return (xxsum - ((xsum * xsum) >> 7));