;*!
;* \copy
;*     Copyright (c)  2009-2013, Cisco Systems
;*     All rights reserved.
;*
;*     Redistribution and use in source and binary forms, with or without
;*     modification, are permitted provided that the following conditions
;*     are met:
;*
;*        * Redistributions of source code must retain the above copyright
;*          notice, this list of conditions and the following disclaimer.
;*
;*        * Redistributions in binary form must reproduce the above copyright
;*          notice, this list of conditions and the following disclaimer in
;*          the documentation and/or other materials provided with the
;*          distribution.
;*
;*     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
;*     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
;*     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
;*     FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
;*     COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
;*     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
;*     BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
;*     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
;*     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
;*     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
;*     ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
;*     POSSIBILITY OF SUCH DAMAGE.
;*
;*
;*  intra_pred.asm
;*
;*  Abstract
;*      sse2 function for intra predict operations
;*
;*  History
;*      18/09/2009 Created
;*
;*
;*************************************************************************/
%include "asm_inc.asm"

;***********************************************************************
; Local Data (Read Only)
;***********************************************************************

SECTION .rodata align=16

align 16
sse2_plane_inc_minus dw -7, -6, -5, -4, -3, -2, -1, 0
align 16
sse2_plane_inc dw 1, 2, 3, 4, 5, 6, 7, 8
align 16
sse2_plane_dec dw 8, 7, 6, 5, 4, 3, 2, 1

; for chroma plane mode
sse2_plane_inc_c dw 1, 2, 3, 4
sse2_plane_dec_c dw 4, 3, 2, 1
align 16
sse2_plane_mul_b_c dw -3, -2, -1, 0, 1, 2, 3, 4

align 16
mmx_01bytes:		times 16	db 1
;align 16
;sse_0x0004bytes:	times 8		dw 4
;ALIGN 16
;sse_f000 db  255,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0

align 16
mmx_0x02: dw 0x02, 0x00, 0x00, 0x00


;***********************************************************************
; macros
;***********************************************************************
;dB 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
;%1 will keep the last result
%macro SSE_DB_1_2REG 2
      pxor %1, %1
      pcmpeqw %2, %2
      psubb %1, %2
%endmacro

;xmm0, xmm1, xmm2, eax, ecx
;lower 64 bits of xmm0 save the result
%macro SSE2_PRED_H_4X4_TWO_LINE 5
    movd		%1,	[%4-1]
	movdqa		%3,	%1
	punpcklbw	%1,	%3
	movdqa		%3,	%1
	punpcklbw	%1,	%3

	;add			%4,	%5
	movd		%2,	[%4+%5-1]
	movdqa		%3,	%2
	punpcklbw	%2,	%3
	movdqa		%3,	%2
	punpcklbw	%2,	%3
	punpckldq	%1,	%2
%endmacro

%macro  SUMW_HORIZON1 2
	movdqa      %2, %1
	psrldq      %2, 8
	paddusw     %1, %2
	movdqa      %2, %1
	psrldq      %2, 4
	paddusw     %1, %2
	movdqa      %2, %1
	psrldq      %2, 2
	paddusw     %1, %2
%endmacro

%macro	LOAD_COLUMN 6
		movd	%1,	[%5]
		movd	%2,	[%5+%6]
		punpcklbw %1,	%2
		lea		%5,	[%5+2*%6]
		movd	%3,	[%5]
		movd	%2,	[%5+%6]
		punpcklbw %3,	%2
		punpcklwd %1,	%3
		lea		%5,	[%5+2*%6]
		movd	%4,	[%5]
		movd	%2,	[%5+%6]
		punpcklbw %4,	%2
		lea		%5,	[%5+2*%6]
		movd	%3,	[%5]
		movd	%2,	[%5+%6]
		lea		%5,	[%5+2*%6]
		punpcklbw %3,	%2
		punpcklwd %4,	%3
		punpckhdq %1,	%4
%endmacro

%macro  SUMW_HORIZON 3
	movhlps		%2, %1			; x2 = xx xx xx xx d7 d6 d5 d4
	paddw		%1, %2			; x1 = xx xx xx xx d37 d26 d15 d04
	punpcklwd	%1, %3			; x1 =  d37  d26 d15 d04
	movhlps		%2, %1			; x2 = xxxx xxxx d37 d26
	paddd		%1, %2			; x1 = xxxx xxxx d1357 d0246
	pshuflw		%2, %1, 0x4e	; x2 = xxxx xxxx d0246 d1357
	paddd		%1, %2			; x1 = xxxx xxxx xxxx  d01234567
%endmacro


%macro  COPY_16_TIMES 2
		movdqa		%2,	[%1-16]
		psrldq		%2,	15
		pmuludq		%2,	[mmx_01bytes]
		pshufd		%2,	%2, 0
%endmacro

%macro  COPY_16_TIMESS 3
		movdqa		%2,	[%1+%3-16]
		psrldq		%2,	15
		pmuludq		%2,	[mmx_01bytes]
		pshufd		%2,	%2, 0
%endmacro

%macro	LOAD_COLUMN_C 6
		movd	%1,	[%5]
		movd	%2,	[%5+%6]
		punpcklbw %1,%2
		lea		%5,	[%5+2*%6]
		movd	%3,	[%5]
		movd	%2,	[%5+%6]
		punpcklbw %3,	%2
		punpckhwd %1,	%3
		lea		%5,	[%5+2*%6]
%endmacro

%macro LOAD_2_LEFT_AND_ADD 0
        lea         r1, [r1+2*r2]
        movzx		r4, byte [r1-0x01]
        add			r3, r4
        movzx		r4, byte [r1+r2-0x01]
        add			r3, r4
%endmacro

;***********************************************************************
; Code
;***********************************************************************

SECTION .text
WELS_EXTERN WelsI4x4LumaPredH_sse2
WELS_EXTERN WelsI4x4LumaPredDDR_mmx
WELS_EXTERN WelsI4x4LumaPredDc_sse2
WELS_EXTERN WelsI16x16LumaPredPlane_sse2

ALIGN 16
;***********************************************************************
;   void WelsI4x4LumaPredH_sse2(uint8_t *pred, uint8_t *pRef, int32_t stride)
;
;	pred must align to 16
;***********************************************************************
WelsI4x4LumaPredH_sse2:
	push r3
	%assign push_num 1
	LOAD_3_PARA
	%ifndef X86_32
	movsx r2, r2d
	%endif
	movzx		r3,	byte [r1-1]
	movd		xmm0,	r3d
	pmuludq		xmm0,	[mmx_01bytes]

	movzx		r3,	byte [r1+r2-1]
	movd		xmm1,	r3d
	pmuludq		xmm1,	[mmx_01bytes]

	unpcklps	xmm0,	xmm1

	lea			r1,	[r1+r2*2]
	movzx		r3,	byte [r1-1]
	movd		xmm2,	r3d
	pmuludq		xmm2,	[mmx_01bytes]

	movzx		r3,	byte [r1+r2-1]
	movd		xmm3,	r3d
	pmuludq		xmm3,	[mmx_01bytes]

	unpcklps	xmm2,	xmm3
	unpcklpd	xmm0,	xmm2

	movdqa		[r0],	xmm0
	pop r3
	ret

;***********************************************************************
; void WelsI16x16LumaPredPlane_sse2(uint8_t *pred, uint8_t *pRef, int32_t stride);
;***********************************************************************
WelsI16x16LumaPredPlane_sse2:
		;%define pushsize	4
		;push	esi
		;mov		esi,	[esp + pushsize + 8]
		;mov		ecx,	[esp + pushsize + 12]
		push r3
		push r4
		%assign push_num 2
		LOAD_3_PARA
		%ifndef X86_32
		movsx r2, r2d
		%endif
		sub		r1,	1
		sub		r1,	r2

		;for H
		pxor	xmm7,	xmm7
		movq	xmm0,	[r1]
		movdqa	xmm5,	[sse2_plane_dec]
		punpcklbw xmm0,	xmm7
		pmullw	xmm0,	xmm5
		movq	xmm1,	[r1 + 9]
		movdqa	xmm6,	[sse2_plane_inc]
		punpcklbw xmm1,	xmm7
		pmullw	xmm1,	xmm6
		psubw	xmm1,	xmm0

		SUMW_HORIZON	xmm1,xmm0,xmm2
		movd    r3d,	xmm1		; H += (i + 1) * (top[8 + i] - top[6 - i]);
		movsx	r3,	r3w
		imul	r3,	5
		add		r3,	32
		sar		r3,	6			; b = (5 * H + 32) >> 6;
		SSE2_Copy8Times	xmm1, r3d	; xmm1 = b,b,b,b,b,b,b,b

		movzx	r4,	BYTE [r1+16]
		sub	r1, 3
		LOAD_COLUMN		xmm0, xmm2, xmm3, xmm4, r1, r2

		add		r1,	3
		movzx	r3,	BYTE [r1+8*r2]
		add		r4,	r3
		shl		r4,	4			;	a = (left[15*stride] + top[15]) << 4;

		sub	r1, 3
		add		r1,	r2
		LOAD_COLUMN		xmm7, xmm2, xmm3, xmm4, r1, r2
		pxor	xmm4,	xmm4
		punpckhbw xmm0,	xmm4
		pmullw	xmm0,	xmm5
		punpckhbw xmm7,	xmm4
		pmullw	xmm7,	xmm6
		psubw	xmm7,	xmm0

		SUMW_HORIZON   xmm7,xmm0,xmm2
		movd    r3d,   xmm7			; V
		movsx	r3,	r3w
		imul	r3,	5
		add		r3,	32
		sar		r3,	6				; c = (5 * V + 32) >> 6;
		SSE2_Copy8Times	xmm4, r3d		; xmm4 = c,c,c,c,c,c,c,c

		;mov		esi,	[esp + pushsize + 4]
		add		r4,	16
		imul	r3,	-7
		add		r3,	r4				; s = a + 16 + (-7)*c
		SSE2_Copy8Times	xmm0, r3d		; xmm0 = s,s,s,s,s,s,s,s

		xor		r3,	r3
		movdqa	xmm5,	[sse2_plane_inc_minus]

get_i16x16_luma_pred_plane_sse2_1:
		movdqa	xmm2,	xmm1
		pmullw	xmm2,	xmm5
		paddw	xmm2,	xmm0
		psraw	xmm2,	5
		movdqa	xmm3,	xmm1
		pmullw	xmm3,	xmm6
		paddw	xmm3,	xmm0
		psraw	xmm3,	5
		packuswb xmm2,	xmm3
		movdqa	[r0],	xmm2
		paddw	xmm0,	xmm4
		add		r0,	16
		inc		r3
		cmp		r3,	16
		jnz get_i16x16_luma_pred_plane_sse2_1
		pop r4
		pop r3
		ret

;***********************************************************************
; void WelsI16x16LumaPredH_sse2(uint8_t *pred, uint8_t *pRef, int32_t stride);
;***********************************************************************

%macro SSE2_PRED_H_16X16_ONE_LINE 0
	add r0, 16
	add r1, r2
	movzx r3, byte [r1]
	SSE2_Copy16Times xmm0, r3d
	movdqa [r0], xmm0
%endmacro

WELS_EXTERN WelsI16x16LumaPredH_sse2
WelsI16x16LumaPredH_sse2:
	push r3
	%assign push_num 1
	LOAD_3_PARA
	%ifndef X86_32
	movsx r2, r2d
	%endif
	dec r1
	movzx r3, byte [r1]
	SSE2_Copy16Times xmm0, r3d
	movdqa [r0], xmm0
	SSE2_PRED_H_16X16_ONE_LINE
	SSE2_PRED_H_16X16_ONE_LINE
	SSE2_PRED_H_16X16_ONE_LINE
	SSE2_PRED_H_16X16_ONE_LINE
	SSE2_PRED_H_16X16_ONE_LINE
	SSE2_PRED_H_16X16_ONE_LINE
	SSE2_PRED_H_16X16_ONE_LINE
	SSE2_PRED_H_16X16_ONE_LINE
	SSE2_PRED_H_16X16_ONE_LINE
	SSE2_PRED_H_16X16_ONE_LINE
	SSE2_PRED_H_16X16_ONE_LINE
	SSE2_PRED_H_16X16_ONE_LINE
	SSE2_PRED_H_16X16_ONE_LINE
	SSE2_PRED_H_16X16_ONE_LINE
	SSE2_PRED_H_16X16_ONE_LINE
	pop r3
    ret

;***********************************************************************
; void WelsI16x16LumaPredV_sse2(uint8_t *pred, uint8_t *pRef, int32_t stride);
;***********************************************************************
WELS_EXTERN WelsI16x16LumaPredV_sse2
WelsI16x16LumaPredV_sse2:
    ;mov     edx, [esp+4]    ; pred
    ;mov     eax, [esp+8]	; pRef
    ;mov     ecx, [esp+12]   ; stride
    %assign push_num 0
    LOAD_3_PARA
	%ifndef X86_32
	movsx r2, r2d
	%endif
    sub     r1, r2
    movdqa  xmm0, [r1]

    movdqa  [r0], xmm0
    movdqa  [r0+10h], xmm0
    movdqa  [r0+20h], xmm0
    movdqa  [r0+30h], xmm0
    movdqa  [r0+40h], xmm0
    movdqa  [r0+50h], xmm0
    movdqa  [r0+60h], xmm0
    movdqa  [r0+70h], xmm0
    movdqa  [r0+80h], xmm0
    movdqa  [r0+90h], xmm0
    movdqa  [r0+160], xmm0
    movdqa  [r0+176], xmm0
    movdqa  [r0+192], xmm0
    movdqa  [r0+208], xmm0
    movdqa  [r0+224], xmm0
    movdqa  [r0+240], xmm0

    ret

;***********************************************************************
; void WelsIChromaPredPlane_sse2(uint8_t *pred, uint8_t *pRef, int32_t stride);
;***********************************************************************
WELS_EXTERN WelsIChromaPredPlane_sse2
WelsIChromaPredPlane_sse2:
		;%define pushsize	4
		;push	esi
		;mov		esi,	[esp + pushsize + 8]	;pRef
		;mov		ecx,	[esp + pushsize + 12]	;stride
		push r3
		push r4
		%assign push_num 2
		LOAD_3_PARA
		%ifndef X86_32
		movsx r2, r2d
		%endif
		sub		r1,	1
		sub		r1,	r2

		pxor	mm7,	mm7
		movq	mm0,	[r1]
		movq	mm5,	[sse2_plane_dec_c]
		punpcklbw mm0,	mm7
		pmullw	mm0,	mm5
		movq	mm1,	[r1 + 5]
		movq	mm6,	[sse2_plane_inc_c]
		punpcklbw mm1,	mm7
		pmullw	mm1,	mm6
		psubw	mm1,	mm0

		movq2dq xmm1,   mm1
		pxor    xmm2,   xmm2
		SUMW_HORIZON	xmm1,xmm0,xmm2
		movd    r3d,	xmm1
		movsx	r3,	r3w
		imul	r3,	17
		add		r3,	16
		sar		r3,	5			; b = (17 * H + 16) >> 5;
		SSE2_Copy8Times	xmm1, r3d	; mm1 = b,b,b,b,b,b,b,b

		movzx	r3,	BYTE [r1+8]
		sub	r1, 3
		LOAD_COLUMN_C	mm0, mm2, mm3, mm4, r1, r2

		add		r1,	3
		movzx	r4,	BYTE [r1+4*r2]
		add		r4,	r3
		shl		r4,	4			; a = (left[7*stride] + top[7]) << 4;

		sub	r1, 3
		add		r1,	r2
		LOAD_COLUMN_C	mm7, mm2, mm3, mm4, r1, r2
		pxor	mm4,	mm4
		punpckhbw mm0,	mm4
		pmullw	mm0,	mm5
		punpckhbw mm7,	mm4
		pmullw	mm7,	mm6
		psubw	mm7,	mm0

		movq2dq xmm7,   mm7
		pxor    xmm2,   xmm2
		SUMW_HORIZON	xmm7,xmm0,xmm2
		movd    r3d,    xmm7			; V
		movsx	r3,	r3w
		imul	r3,	17
		add		r3,	16
		sar		r3,	5				; c = (17 * V + 16) >> 5;
		SSE2_Copy8Times	xmm4, r3d	; mm4 = c,c,c,c,c,c,c,c

		;mov		esi,	[esp + pushsize + 4]
		add		r4,	16
		imul	r3,	-3
		add		r3,	r4		; s = a + 16 + (-3)*c
		SSE2_Copy8Times	xmm0, r3d	; xmm0 = s,s,s,s,s,s,s,s

		xor		r3,	r3
		movdqa	xmm5,	[sse2_plane_mul_b_c]

get_i_chroma_pred_plane_sse2_1:
		movdqa	xmm2,	xmm1
		pmullw	xmm2,	xmm5
		paddw	xmm2,	xmm0
		psraw	xmm2,	5
		packuswb xmm2,	xmm2
		movq	[r0],	xmm2
		paddw	xmm0,	xmm4
		add		r0,	8
		inc		r3
		cmp		r3,	8
		jnz get_i_chroma_pred_plane_sse2_1
		pop r4
		pop r3
		WELSEMMS
		ret

ALIGN 16
;***********************************************************************
;	0 |1 |2 |3 |4 |
;	6 |7 |8 |9 |10|
;	11|12|13|14|15|
;	16|17|18|19|20|
;	21|22|23|24|25|
;	7 is the start pixel of current 4x4 block
;	pred[7] = ([6]+[0]*2+[1]+2)/4
;
;   void WelsI4x4LumaPredDDR_mmx(uint8_t *pred,uint8_t *pRef,int32_t stride)
;
;***********************************************************************
WelsI4x4LumaPredDDR_mmx:
	;mov			edx,[esp+4]			;pred
	;mov         eax,[esp+8]			;pRef
	;mov			ecx,[esp+12]		;stride
	%assign push_num 0
	LOAD_3_PARA
	%ifndef X86_32
	movsx r2, r2d
	%endif
	movq        mm1,[r1+r2-8]		;get value of 11,decreasing 8 is trying to improve the performance of movq mm1[8] = 11
	movq        mm2,[r1-8]			;get value of 6 mm2[8] = 6
	sub		r1, r2			;mov eax to above line of current block(postion of 1)
	punpckhbw   mm2,[r1-8]			;mm2[8](high 8th byte of mm2) = [0](value of 0), mm2[7]= [6]
	movd        mm3,[r1]			;get value 1, mm3[1] = [1],mm3[2]=[2],mm3[3]=[3]
	punpckhwd   mm1,mm2				;mm1[8]=[0],mm1[7]=[6],mm1[6]=[11]
	psllq       mm3,18h				;mm3[5]=[1]
	psrlq       mm1,28h				;mm1[3]=[0],mm1[2]=[6],mm1[1]=[11]
	por         mm3,mm1				;mm3[6]=[3],mm3[5]=[2],mm3[4]=[1],mm3[3]=[0],mm3[2]=[6],mm3[1]=[11]
	movq        mm1,mm3				;mm1[6]=[3],mm1[5]=[2],mm1[4]=[1],mm1[3]=[0],mm1[2]=[6],mm1[1]=[11]
	lea  	    r1,[r1+r2*2-8h]		;set eax point to 12
	movq        mm4,[r1+r2]		;get value of 16, mm4[8]=[16]
	psllq       mm3,8				;mm3[7]=[3],mm3[6]=[2],mm3[5]=[1],mm3[4]=[0],mm3[3]=[6],mm3[2]=[11],mm3[1]=0
	psrlq       mm4,38h				;mm4[1]=[16]
	por         mm3,mm4				;mm3[7]=[3],mm3[6]=[2],mm3[5]=[1],mm3[4]=[0],mm3[3]=[6],mm3[2]=[11],mm3[1]=[16]
	movq        mm2,mm3				;mm2[7]=[3],mm2[6]=[2],mm2[5]=[1],mm2[4]=[0],mm2[3]=[6],mm2[2]=[11],mm2[1]=[16]
	movq        mm4,[r1+r2*2]		;mm4[8]=[21]
	psllq       mm3,8				;mm3[8]=[3],mm3[7]=[2],mm3[6]=[1],mm3[5]=[0],mm3[4]=[6],mm3[3]=[11],mm3[2]=[16],mm3[1]=0
	psrlq       mm4,38h				;mm4[1]=[21]
	por         mm3,mm4				;mm3[8]=[3],mm3[7]=[2],mm3[6]=[1],mm3[5]=[0],mm3[4]=[6],mm3[3]=[11],mm3[2]=[16],mm3[1]=[21]
	movq        mm4,mm3				;mm4[8]=[3],mm4[7]=[2],mm4[6]=[1],mm4[5]=[0],mm4[4]=[6],mm4[3]=[11],mm4[2]=[16],mm4[1]=[21]
	pavgb       mm3,mm1				;mm3=([11]+[21]+1)/2
	pxor        mm1,mm4				;find odd value in the lowest bit of each byte
	pand        mm1,[mmx_01bytes]	;set the odd bit
	psubusb     mm3,mm1				;decrease 1 from odd bytes
	pavgb       mm2,mm3				;mm2=(([11]+[21]+1)/2+1+[16])/2

	movd        [r0+12],mm2
	psrlq       mm2,8
	movd        [r0+8],mm2
	psrlq       mm2,8
	movd        [r0+4],mm2
	psrlq       mm2,8
	movd        [r0],mm2
	WELSEMMS
	ret

ALIGN 16
;***********************************************************************
;	0 |1 |2 |3 |4 |
;	5 |6 |7 |8 |9 |
;	10|11|12|13|14|
;	15|16|17|18|19|
;	20|21|22|23|24|
;	6 is the start pixel of current 4x4 block
;	pred[6] = ([1]+[2]+[3]+[4]+[5]+[10]+[15]+[20]+4)/8
;
;   void WelsI4x4LumaPredDc_sse2(uint8_t *pred,uint8_t *pRef,int32_t stride)
;
;***********************************************************************
WelsI4x4LumaPredDc_sse2:
	push r3
	push r4
	%assign push_num 2
	LOAD_3_PARA
	%ifndef X86_32
	movsx r2, r2d
	%endif
	movzx		r4,	byte [r1-1h]
	sub			r1,	r2
	movd		xmm0,	[r1]
	pxor		xmm1,	xmm1
	psadbw		xmm0,	xmm1
	xor r3, r3
	movd		r3d,	xmm0
	add			r3,	r4
	movzx		r4,	byte [r1+r2*2-1h]
	add			r3,	r4

	lea			r1,	[r1+r2*2-1]
	movzx		r4,	byte [r1+r2]
	add			r3,	r4

	movzx		r4,	byte [r1+r2*2]
	add			r3,	r4
	add			r3,	4
	sar			r3,	3
	imul		r3,	0x01010101

	movd		xmm0,	r3d
	pshufd		xmm0,	xmm0,	0
	movdqa		[r0],	xmm0
	pop r4
	pop r3
	ret

ALIGN 16
;***********************************************************************
;	void WelsIChromaPredH_mmx(uint8_t *pred, uint8_t *pRef, int32_t stride)
;   copy 8 pixel of 8 line from left
;***********************************************************************
%macro MMX_PRED_H_8X8_ONE_LINE 4
	movq		%1,		[%3-8]
	psrlq		%1,		38h

	;pmuludq		%1,		[mmx_01bytes]		;extend to 4 bytes
	pmullw		%1,		[mmx_01bytes]
	pshufw		%1,		%1,	0
	movq		[%4],	%1
%endmacro

%macro MMX_PRED_H_8X8_ONE_LINEE 4
	movq		%1,		[%3+r2-8]
	psrlq		%1,		38h

	;pmuludq		%1,		[mmx_01bytes]		;extend to 4 bytes
	pmullw		%1,		[mmx_01bytes]
	pshufw		%1,		%1,	0
	movq		[%4],	%1
%endmacro

WELS_EXTERN WelsIChromaPredH_mmx
WelsIChromaPredH_mmx:
	;mov			edx,	[esp+4]			;pred
	;mov         eax,	[esp+8]			;pRef
	;mov			ecx,	[esp+12]		;stride
	%assign push_num 0
	LOAD_3_PARA
	%ifndef X86_32
	movsx r2, r2d
	%endif
	movq		mm0,	[r1-8]
	psrlq		mm0,	38h

	;pmuludq		mm0,	[mmx_01bytes]		;extend to 4 bytes
	pmullw		mm0,		[mmx_01bytes]
	pshufw		mm0,	mm0,	0
	movq		[r0],	mm0

	MMX_PRED_H_8X8_ONE_LINEE	mm0, mm1, r1,r0+8

	lea			r1,[r1+r2*2]
	MMX_PRED_H_8X8_ONE_LINE	mm0, mm1, r1,r0+16

	MMX_PRED_H_8X8_ONE_LINEE	mm0, mm1, r1,r0+24

	lea			r1,[r1+r2*2]
	MMX_PRED_H_8X8_ONE_LINE	mm0, mm1, r1,r0+32

	MMX_PRED_H_8X8_ONE_LINEE	mm0, mm1, r1,r0+40

	lea			r1,[r1+r2*2]
	MMX_PRED_H_8X8_ONE_LINE	mm0, mm1, r1,r0+48

	MMX_PRED_H_8X8_ONE_LINEE	mm0, mm1, r1,r0+56
	WELSEMMS
	ret

ALIGN 16
;***********************************************************************
;	void WelsI4x4LumaPredV_sse2(uint8_t *pred, uint8_t *pRef, int32_t stride)
;   copy pixels from top 4 pixels
;***********************************************************************
WELS_EXTERN WelsI4x4LumaPredV_sse2
WelsI4x4LumaPredV_sse2:
	%assign push_num 0
	LOAD_3_PARA
	%ifndef X86_32
	movsx r2, r2d
	%endif
	sub			r1,	r2
	movd		xmm0,	[r1]
	pshufd		xmm0,	xmm0,	0
	movdqa		[r0],	xmm0
	ret

ALIGN 16
;***********************************************************************
;	void WelsIChromaPredV_sse2(uint8_t *pred, uint8_t *pRef, int32_t stride)
;   copy 8 pixels from top 8 pixels
;***********************************************************************
WELS_EXTERN WelsIChromaPredV_sse2
WelsIChromaPredV_sse2:
	%assign push_num 0
	LOAD_3_PARA
	%ifndef X86_32
	movsx r2, r2d
	%endif
	sub		r1,		r2
	movq		xmm0,		[r1]
	movdqa		xmm1,		xmm0
	punpcklqdq	xmm0,		xmm1
	movdqa		[r0],		xmm0
	movdqa		[r0+16],	xmm0
	movdqa		[r0+32],	xmm0
	movdqa		[r0+48],	xmm0
	ret

	ALIGN 16
;***********************************************************************
;	lt|t0|t1|t2|t3|
;	l0|
;	l1|
;	l2|
;	l3|
;	t3 will never been used
;   destination:
;	|a |b |c |d |
;	|e |f |a |b |
;	|g |h |e |f |
;	|i |j |g |h |

;   a = (1 + lt + l0)>>1
;   e = (1 + l0 + l1)>>1
;   g = (1 + l1 + l2)>>1
;   i = (1 + l2 + l3)>>1

;   d = (2 + t0 + (t1<<1) + t2)>>2
;   c = (2 + lt + (t0<<1) + t1)>>2
;   b = (2 + l0 + (lt<<1) + t0)>>2

;   f = (2 + l1 + (l0<<1) + lt)>>2
;   h = (2 + l2 + (l1<<1) + l0)>>2
;   j = (2 + l3 + (l2<<1) + l1)>>2
;   [b a f e h g j i] + [d c b a] --> mov to memory
;
;   void WelsI4x4LumaPredHD_mmx(uint8_t *pred,uint8_t *pRef,int32_t stride)
;***********************************************************************
WELS_EXTERN WelsI4x4LumaPredHD_mmx
WelsI4x4LumaPredHD_mmx:
	%assign push_num 0
	LOAD_3_PARA
	%ifndef X86_32
	movsx r2, r2d
	%endif
	sub         r1, r2
	movd        mm0, [r1-1]            ; mm0 = [xx xx xx xx t2 t1 t0 lt]
	psllq       mm0, 20h                ; mm0 = [t2 t1 t0 lt xx xx xx xx]

	movd        mm1, [r1+2*r2-4]
	punpcklbw   mm1, [r1+r2-4]        ; mm1[7] = l0, mm1[6] = l1
	lea         r1, [r1+2*r2]
	movd        mm2, [r1+2*r2-4]
	punpcklbw   mm2, [r1+r2-4]        ; mm2[7] = l2, mm2[6] = l3
	punpckhwd   mm2, mm1                ; mm2 = [l0 l1 l2 l3 xx xx xx xx]
	psrlq       mm2, 20h
	pxor        mm0, mm2                ; mm0 = [t2 t1 t0 lt l0 l1 l2 l3]

	movq        mm1, mm0
	psrlq       mm1, 10h                ; mm1 = [xx xx t2 t1 t0 lt l0 l1]
	movq        mm2, mm0
	psrlq       mm2, 8h                 ; mm2 = [xx t2 t1 t0 lt l0 l1 l2]
	movq        mm3, mm2
	movq        mm4, mm1
	pavgb       mm1, mm0

	pxor        mm4, mm0				; find odd value in the lowest bit of each byte
	pand        mm4, [mmx_01bytes]	    ; set the odd bit
	psubusb     mm1, mm4				; decrease 1 from odd bytes

	pavgb       mm2, mm1                ; mm2 = [xx xx d  c  b  f  h  j]

	movq        mm4, mm0
	pavgb       mm3, mm4                ; mm3 = [xx xx xx xx a  e  g  i]
	punpcklbw   mm3, mm2                ; mm3 = [b  a  f  e  h  g  j  i]

	psrlq       mm2, 20h
	psllq       mm2, 30h                ; mm2 = [d  c  0  0  0  0  0  0]
	movq        mm4, mm3
	psrlq       mm4, 10h                ; mm4 = [0  0  b  a  f  e  h  j]
	pxor        mm2, mm4                ; mm2 = [d  c  b  a  xx xx xx xx]
	psrlq       mm2, 20h                ; mm2 = [xx xx xx xx  d  c  b  a]

	movd        [r0], mm2
	movd        [r0+12], mm3
	psrlq       mm3, 10h
	movd        [r0+8], mm3
	psrlq       mm3, 10h
	movd        [r0+4], mm3
	WELSEMMS
	ret

ALIGN 16
;***********************************************************************
;	lt|t0|t1|t2|t3|
;	l0|
;	l1|
;	l2|
;	l3|
;	t3 will never been used
;   destination:
;	|a |b |c |d |
;	|c |d |e |f |
;	|e |f |g |g |
;	|g |g |g |g |

;   a = (1 + l0 + l1)>>1
;   c = (1 + l1 + l2)>>1
;   e = (1 + l2 + l3)>>1
;   g = l3

;   b = (2 + l0 + (l1<<1) + l2)>>2
;   d = (2 + l1 + (l2<<1) + l3)>>2
;   f = (2 + l2 + (l3<<1) + l3)>>2

;   [g g f e d c b a] + [g g g g] --> mov to memory
;
;   void WelsI4x4LumaPredHU_mmx(uint8_t *pred,uint8_t *pRef,int32_t stride)
;***********************************************************************
WELS_EXTERN WelsI4x4LumaPredHU_mmx
WelsI4x4LumaPredHU_mmx:
	%assign push_num 0
	LOAD_3_PARA
	%ifndef X86_32
	movsx r2, r2d
	%endif
	movd        mm0, [r1-4]            ; mm0[3] = l0
	punpcklbw   mm0, [r1+r2-4]        ; mm0[7] = l1, mm0[6] = l0
	lea         r1, [r1+2*r2]
	movd        mm2, [r1-4]            ; mm2[3] = l2
	movd        mm4, [r1+r2-4]        ; mm4[3] = l3
	punpcklbw   mm2, mm4
	punpckhwd   mm0, mm2                ; mm0 = [l3 l2 l1 l0 xx xx xx xx]

	psrlq       mm4, 18h
	psllq       mm4, 38h                ; mm4 = [l3 xx xx xx xx xx xx xx]
	psrlq       mm0, 8h
	pxor        mm0, mm4                ; mm0 = [l3 l3 l2 l1 l0 xx xx xx]

	movq        mm1, mm0
	psllq       mm1, 8h                 ; mm1 = [l3 l2 l1 l0 xx xx xx xx]
	movq        mm3, mm1                ; mm3 = [l3 l2 l1 l0 xx xx xx xx]
	pavgb       mm1, mm0                ; mm1 = [g  e  c  a  xx xx xx xx]

	movq        mm2, mm0
	psllq       mm2, 10h                ; mm2 = [l2 l1 l0 xx xx xx xx xx]
	movq        mm5, mm2
	pavgb       mm2, mm0

	pxor        mm5, mm0				; find odd value in the lowest bit of each byte
	pand        mm5, [mmx_01bytes]	    ; set the odd bit
	psubusb     mm2, mm5				; decrease 1 from odd bytes

	pavgb       mm2, mm3                ; mm2 = [f  d  b  xx xx xx xx xx]

	psrlq       mm2, 8h
	pxor        mm2, mm4                ; mm2 = [g  f  d  b  xx xx xx xx]

	punpckhbw   mm1, mm2                ; mm1 = [g  g  f  e  d  c  b  a]
	punpckhbw   mm4, mm4                ; mm4 = [g  g  xx xx xx xx xx xx]
	punpckhbw   mm4, mm4                ; mm4 = [g  g  g  g  xx xx xx xx]

	psrlq       mm4, 20h
	movd        [r0+12], mm4

	movd        [r0], mm1
	psrlq       mm1, 10h
	movd        [r0+4], mm1
	psrlq       mm1, 10h
	movd        [r0+8], mm1
	WELSEMMS
	ret



ALIGN 16
;***********************************************************************
;	lt|t0|t1|t2|t3|
;	l0|
;	l1|
;	l2|
;	l3|
;	l3 will never been used
;   destination:
;	|a |b |c |d |
;	|e |f |g |h |
;	|i |a |b |c |
;	|j |e |f |g |

;   a = (1 + lt + t0)>>1
;   b = (1 + t0 + t1)>>1
;   c = (1 + t1 + t2)>>1
;   d = (1 + t2 + t3)>>1

;   e = (2 + l0 + (lt<<1) + t0)>>2
;   f = (2 + lt + (t0<<1) + t1)>>2
;   g = (2 + t0 + (t1<<1) + t2)>>2

;   h = (2 + t1 + (t2<<1) + t3)>>2
;   i = (2 + lt + (l0<<1) + l1)>>2
;   j = (2 + l0 + (l1<<1) + l2)>>2
;
;   void WelsI4x4LumaPredVR_mmx(uint8_t *pred,uint8_t *pRef,int32_t stride)
;***********************************************************************
WELS_EXTERN WelsI4x4LumaPredVR_mmx
WelsI4x4LumaPredVR_mmx:
	%assign push_num 0
	LOAD_3_PARA
	%ifndef X86_32
	movsx r2, r2d
	%endif
	sub         r1, r2
	movq        mm0, [r1-1]            ; mm0 = [xx xx xx t3 t2 t1 t0 lt]
	psllq       mm0, 18h                ; mm0 = [t3 t2 t1 t0 lt xx xx xx]

	movd        mm1, [r1+2*r2-4]
	punpcklbw   mm1, [r1+r2-4]        ; mm1[7] = l0, mm1[6] = l1
	lea         r1, [r1+2*r2]
	movq        mm2, [r1+r2-8]        ; mm2[7] = l2
	punpckhwd   mm2, mm1                ; mm2 = [l0 l1 l2 xx xx xx xx xx]
	psrlq       mm2, 28h
	pxor        mm0, mm2                ; mm0 = [t3 t2 t1 t0 lt l0 l1 l2]

	movq        mm1, mm0
	psllq       mm1, 8h                 ; mm1 = [t2 t1 t0 lt l0 l1 l2 xx]
	pavgb       mm1, mm0                ; mm1 = [d  c  b  a  xx xx xx xx]

	movq        mm2, mm0
	psllq       mm2, 10h                ; mm2 = [t1 t0 lt l0 l1 l2 xx xx]
	movq        mm3, mm2
	pavgb       mm2, mm0

	pxor        mm3, mm0				; find odd value in the lowest bit of each byte
	pand        mm3, [mmx_01bytes]	    ; set the odd bit
	psubusb     mm2, mm3				; decrease 1 from odd bytes

	movq        mm3, mm0
	psllq       mm3, 8h                 ; mm3 = [t2 t1 t0 lt l0 l1 l2 xx]
	pavgb       mm3, mm2                ; mm3 = [h  g  f  e  i  j  xx xx]
	movq        mm2, mm3

	psrlq       mm1, 20h                ; mm1 = [xx xx xx xx d  c  b  a]
	movd        [r0], mm1

	psrlq       mm2, 20h                ; mm2 = [xx xx xx xx h  g  f  e]
	movd        [r0+4], mm2

	movq        mm4, mm3
	psllq       mm4, 20h
	psrlq       mm4, 38h                ; mm4 = [xx xx xx xx xx xx xx i]

	movq        mm5, mm3
	psllq       mm5, 28h
	psrlq       mm5, 38h                ; mm5 = [xx xx xx xx xx xx xx j]

	psllq       mm1, 8h
	pxor        mm4, mm1                ; mm4 = [xx xx xx xx c  b  a  i]
	movd        [r0+8], mm4

	psllq       mm2, 8h
	pxor        mm5, mm2                ; mm5 = [xx xx xx xx g  f  e  j]
	movd        [r0+12], mm5
	WELSEMMS
	ret

ALIGN 16
;***********************************************************************
;	lt|t0|t1|t2|t3|t4|t5|t6|t7
;	l0|
;	l1|
;	l2|
;	l3|
;	lt,t0,t1,t2,t3 will never been used
;   destination:
;	|a |b |c |d |
;	|b |c |d |e |
;	|c |d |e |f |
;	|d |e |f |g |

;   a = (2 + t0 + t2 + (t1<<1))>>2
;   b = (2 + t1 + t3 + (t2<<1))>>2
;   c = (2 + t2 + t4 + (t3<<1))>>2
;   d = (2 + t3 + t5 + (t4<<1))>>2

;   e = (2 + t4 + t6 + (t5<<1))>>2
;   f = (2 + t5 + t7 + (t6<<1))>>2
;   g = (2 + t6 + t7 + (t7<<1))>>2

;   [g f e d c b a] --> mov to memory
;
;   void WelsI4x4LumaPredDDL_mmx(uint8_t *pred,uint8_t *pRef,int32_t stride)
;***********************************************************************
WELS_EXTERN WelsI4x4LumaPredDDL_mmx
WelsI4x4LumaPredDDL_mmx:
	%assign push_num 0
	LOAD_3_PARA
	%ifndef X86_32
	movsx r2, r2d
	%endif
	sub         r1, r2
	movq        mm0, [r1]              ; mm0 = [t7 t6 t5 t4 t3 t2 t1 t0]
	movq        mm1, mm0
	movq        mm2, mm0

	movq        mm3, mm0
	psrlq       mm3, 38h
	psllq       mm3, 38h                ; mm3 = [t7 xx xx xx xx xx xx xx]

	psllq       mm1, 8h                 ; mm1 = [t6 t5 t4 t3 t2 t1 t0 xx]
	psrlq       mm2, 8h
	pxor        mm2, mm3                ; mm2 = [t7 t7 t6 t5 t4 t3 t2 t1]

	movq        mm3, mm1
	pavgb       mm1, mm2
	pxor        mm3, mm2				; find odd value in the lowest bit of each byte
	pand        mm3, [mmx_01bytes]	    ; set the odd bit
	psubusb     mm1, mm3				; decrease 1 from odd bytes

	pavgb       mm0, mm1                ; mm0 = [g f e d c b a xx]

	psrlq       mm0, 8h
	movd        [r0], mm0
	psrlq       mm0, 8h
	movd        [r0+4], mm0
	psrlq       mm0, 8h
	movd        [r0+8], mm0
	psrlq       mm0, 8h
	movd        [r0+12], mm0
	WELSEMMS
	ret


ALIGN 16
;***********************************************************************
;	lt|t0|t1|t2|t3|t4|t5|t6|t7
;	l0|
;	l1|
;	l2|
;	l3|
;	lt,t0,t1,t2,t3 will never been used
;   destination:
;	|a |b |c |d |
;	|e |f |g |h |
;	|b |c |d |i |
;	|f |g |h |j |

;   a = (1 + t0 + t1)>>1
;   b = (1 + t1 + t2)>>1
;   c = (1 + t2 + t3)>>1
;   d = (1 + t3 + t4)>>1
;   i = (1 + t4 + t5)>>1

;   e = (2 + t0 + (t1<<1) + t2)>>2
;   f = (2 + t1 + (t2<<1) + t3)>>2
;   g = (2 + t2 + (t3<<1) + t4)>>2
;   h = (2 + t3 + (t4<<1) + t5)>>2
;   j = (2 + t4 + (t5<<1) + t6)>>2

;   [i d c b a] + [j h g f e] --> mov to memory
;
;   void WelsI4x4LumaPredVL_mmx(uint8_t *pred,uint8_t *pRef,int32_t stride)
;***********************************************************************
WELS_EXTERN WelsI4x4LumaPredVL_mmx
WelsI4x4LumaPredVL_mmx:
	%assign push_num 0
	LOAD_3_PARA
	%ifndef X86_32
	movsx r2, r2d
	%endif
	sub         r1, r2
	movq        mm0, [r1]              ; mm0 = [t7 t6 t5 t4 t3 t2 t1 t0]
	movq        mm1, mm0
	movq        mm2, mm0

	psrlq       mm1, 8h                 ; mm1 = [xx t7 t6 t5 t4 t3 t2 t1]
	psrlq       mm2, 10h                ; mm2 = [xx xx t7 t6 t5 t4 t3 t2]

	movq        mm3, mm1
	pavgb       mm3, mm0                ; mm3 = [xx xx xx i  d  c  b  a]

	movq        mm4, mm2
	pavgb       mm2, mm0
	pxor        mm4, mm0				; find odd value in the lowest bit of each byte
	pand        mm4, [mmx_01bytes]	    ; set the odd bit
	psubusb     mm2, mm4				; decrease 1 from odd bytes

	pavgb       mm2, mm1                ; mm2 = [xx xx xx j  h  g  f  e]

	movd        [r0], mm3
	psrlq       mm3, 8h
	movd        [r0+8], mm3

	movd        [r0+4], mm2
	psrlq       mm2, 8h
	movd        [r0+12], mm2
	WELSEMMS
	ret

ALIGN 16
;***********************************************************************
;
;   void WelsIChromaPredDc_sse2(uint8_t *pred, uint8_t *pRef, int32_t stride)
;***********************************************************************
WELS_EXTERN WelsIChromaPredDc_sse2
WelsIChromaPredDc_sse2:
	push r3
	push r4
	%assign push_num 2
	LOAD_3_PARA
	%ifndef X86_32
	movsx r2, r2d
	%endif
	sub         r1, r2
	movq        mm0, [r1]

	movzx		r3, byte [r1+r2-0x01] ; l1
	lea         	r1, [r1+2*r2]
	movzx		r4, byte [r1-0x01]     ; l2
	add		r3, r4
	movzx		r4, byte [r1+r2-0x01] ; l3
	add		r3, r4
	lea         	r1, [r1+2*r2]
	movzx		r4, byte [r1-0x01]     ; l4
	add		r3, r4
	movd        	mm1, r3d                 ; mm1 = l1+l2+l3+l4

	movzx		r3, byte [r1+r2-0x01] ; l5
	lea         	r1, [r1+2*r2]
	movzx		r4, byte [r1-0x01]     ; l6
	add		r3, r4
	movzx		r4, byte [r1+r2-0x01] ; l7
	add		r3, r4
	lea         	r1, [r1+2*r2]
	movzx		r4, byte [r1-0x01]     ; l8
	add		r3, r4
	movd        	mm2, r3d                 ; mm2 = l5+l6+l7+l8

	movq        mm3, mm0
	psrlq       mm0, 0x20
	psllq       mm3, 0x20
	psrlq       mm3, 0x20
	pxor		mm4, mm4
	psadbw		mm0, mm4
	psadbw		mm3, mm4                 ; sum1 = mm3+mm1, sum2 = mm0, sum3 = mm2

	paddq       mm3, mm1
	movq        mm1, mm2
	paddq       mm1, mm0;                ; sum1 = mm3, sum2 = mm0, sum3 = mm2, sum4 = mm1

	movq        mm4, [mmx_0x02]

	paddq       mm0, mm4
	psrlq       mm0, 0x02

	paddq       mm2, mm4
	psrlq       mm2, 0x02

	paddq       mm3, mm4
	paddq       mm3, mm4
	psrlq       mm3, 0x03

	paddq       mm1, mm4
	paddq       mm1, mm4
	psrlq       mm1, 0x03

	pmuludq     mm0, [mmx_01bytes]
	pmuludq     mm3, [mmx_01bytes]
	psllq       mm0, 0x20
	pxor        mm0, mm3                 ; mm0 = m_up

	pmuludq     mm2, [mmx_01bytes]
	pmuludq     mm1, [mmx_01bytes]
	psllq       mm1, 0x20
	pxor        mm1, mm2                 ; mm2 = m_down

	movq        [r0], mm0
	movq        [r0+0x08], mm0
	movq        [r0+0x10], mm0
	movq        [r0+0x18], mm0

	movq        [r0+0x20], mm1
	movq        [r0+0x28], mm1
	movq        [r0+0x30], mm1
	movq        [r0+0x38], mm1

	pop r4
	pop r3
	WELSEMMS
	ret



ALIGN 16
;***********************************************************************
;
;   void WelsI16x16LumaPredDc_sse2(uint8_t *pred, uint8_t *pRef, int32_t stride)
;***********************************************************************
WELS_EXTERN WelsI16x16LumaPredDc_sse2
WelsI16x16LumaPredDc_sse2:
	push r3
	push r4
	%assign push_num 2
	LOAD_3_PARA
	%ifndef X86_32
	movsx r2, r2d
	%endif
	sub         r1, r2
	movdqa      xmm0, [r1]             ; read one row
	pxor		xmm1, xmm1
	psadbw		xmm0, xmm1
	movdqa      xmm1, xmm0
	psrldq      xmm1, 0x08
	pslldq      xmm0, 0x08
	psrldq      xmm0, 0x08
	paddw       xmm0, xmm1

	movzx		r3, byte [r1+r2-0x01]
	movzx		r4, byte [r1+2*r2-0x01]
	add		r3, r4
	lea         r1, [r1+r2]
	LOAD_2_LEFT_AND_ADD
	LOAD_2_LEFT_AND_ADD
	LOAD_2_LEFT_AND_ADD
	LOAD_2_LEFT_AND_ADD
	LOAD_2_LEFT_AND_ADD
	LOAD_2_LEFT_AND_ADD
	LOAD_2_LEFT_AND_ADD
	add         r3, 0x10
	movd        xmm1, r3d
	paddw       xmm0, xmm1
	psrld       xmm0, 0x05
	pmuludq     xmm0, [mmx_01bytes]
	pshufd      xmm0, xmm0, 0

	movdqa      [r0], xmm0
	movdqa      [r0+0x10], xmm0
	movdqa      [r0+0x20], xmm0
	movdqa      [r0+0x30], xmm0
	movdqa      [r0+0x40], xmm0
	movdqa      [r0+0x50], xmm0
	movdqa      [r0+0x60], xmm0
	movdqa      [r0+0x70], xmm0
	movdqa      [r0+0x80], xmm0
	movdqa      [r0+0x90], xmm0
	movdqa      [r0+0xa0], xmm0
	movdqa      [r0+0xb0], xmm0
	movdqa      [r0+0xc0], xmm0
	movdqa      [r0+0xd0], xmm0
	movdqa      [r0+0xe0], xmm0
	movdqa      [r0+0xf0], xmm0

	pop r4
	pop r3
	ret

;***********************************************************************
;
;int32_t WelsSampleSatdThree4x4_sse2( uint8_t *pDec, int32_t iLineSizeDec, uint8_t *pEnc, int32_t iLinesizeEnc,
;                             uint8_t* pRed, int32_t* pBestMode, int32_t, int32_t, int32_t);
;
;***********************************************************************
%ifdef X86_32
WELS_EXTERN WelsSampleSatdThree4x4_sse2
align 16
WelsSampleSatdThree4x4_sse2:
	push      ebx
	push      esi
	push      edi
	mov       eax,  [esp+24];p_enc
	mov       ebx,  [esp+28];linesize_enc

	; load source 4x4 samples and Hadamard transform
    movd      xmm0, [eax]
    movd      xmm1, [eax+ebx]
    lea       eax , [eax+2*ebx]
    movd      xmm2, [eax]
    movd      xmm3, [eax+ebx]
    punpckldq xmm0, xmm2
    punpckldq xmm1, xmm3

    pxor      xmm6, xmm6
    punpcklbw xmm0, xmm6
    punpcklbw xmm1, xmm6

    movdqa    xmm2, xmm0
    paddw     xmm0, xmm1
    psubw     xmm2, xmm1
    SSE2_XSawp  qdq, xmm0, xmm2, xmm3

    movdqa    xmm4, xmm0
    paddw     xmm0, xmm3
    psubw     xmm4, xmm3

    movdqa    xmm2, xmm0
    punpcklwd xmm0, xmm4
    punpckhwd xmm4, xmm2

	SSE2_XSawp  dq,  xmm0, xmm4, xmm3
	SSE2_XSawp  qdq, xmm0, xmm3, xmm5

    movdqa    xmm7, xmm0
    paddw     xmm0, xmm5
    psubw     xmm7, xmm5

	SSE2_XSawp  qdq,  xmm0, xmm7, xmm1

    ; Hadamard transform results are saved in xmm0 and xmm2
    movdqa    xmm2, xmm0
    paddw     xmm0, xmm1
    psubw     xmm2, xmm1

	; load top boundary samples: [a b c d]
    mov       eax,  [esp+16];p_dec
	sub		  eax,	[esp+20];linesize_dec
	movzx     ecx,  byte [eax]
	movzx     edx,  byte [eax+1]
	movzx     esi,  byte [eax+2]
	movzx     edi,  byte [eax+3]

	; get the transform results of top boundary samples: [a b c d]
	add       edx, ecx ; edx = a + b
	add       edi, esi ; edi = c + d
	add       ecx, ecx ; ecx = a + a
	add       esi, esi ; esi = c + c
	sub       ecx, edx ; ecx = a + a - a - b = a - b
	sub       esi, edi ; esi = c + c - c - d = c - d
	add       edi, edx ; edi = (a + b) + (c + d)
	add       edx, edx
	sub       edx, edi ; edx = (a + b) - (c + d)
	add       esi, ecx ; esi = (a - b) + (c - d)
	add       ecx, ecx
	sub       ecx, esi ; ecx = (a - b) - (c - d) ; [edi edx ecx esi]

	movdqa    xmm6, xmm0
	movdqa    xmm7, xmm2
	movd      xmm5, edi ; store the edi for DC mode
	pxor      xmm3, xmm3
	pxor      xmm4, xmm4
	pinsrw    xmm3, edi, 0
	pinsrw    xmm3, esi, 4
	psllw     xmm3, 2
	pinsrw    xmm4, edx, 0
	pinsrw    xmm4, ecx, 4
	psllw     xmm4, 2

	; get the satd of H
	psubw     xmm0, xmm3
	psubw     xmm2, xmm4

	WELS_AbsW  xmm0, xmm1
	WELS_AbsW  xmm2, xmm1
    paddusw        xmm0, xmm2
    SUMW_HORIZON1  xmm0, xmm1 ; satd of V is stored in xmm0

	; load left boundary samples: [a b c d]'
    mov       eax,  [esp+16]
	mov       ebx,  [esp+20]
	movzx     ecx,  byte [eax-1]
	movzx     edx,  byte [eax+ebx-1]
	lea       eax , [eax+2*ebx]
	movzx     esi,  byte [eax-1]
	movzx     edi,  byte [eax+ebx-1]

	; get the transform results of left boundary samples: [a b c d]'
	add       edx, ecx ; edx = a + b
	add       edi, esi ; edi = c + d
	add       ecx, ecx ; ecx = a + a
	add       esi, esi ; esi = c + c
	sub       ecx, edx ; ecx = a + a - a - b = a - b
	sub       esi, edi ; esi = c + c - c - d = c - d
	add       edi, edx ; edi = (a + b) + (c + d)
	add       edx, edx
	sub       edx, edi ; edx = (a + b) - (c + d)
	add       esi, ecx ; esi = (a - b) + (c - d)
	add       ecx, ecx
	sub       ecx, esi ; ecx = (a - b) - (c - d) ; [edi edx ecx esi]'

	; store the transform results in xmm3
    movd      xmm3, edi
	pinsrw    xmm3, edx, 1
	pinsrw    xmm3, ecx, 2
	pinsrw    xmm3, esi, 3
	psllw     xmm3, 2

	; get the satd of V
	movdqa    xmm2, xmm6
	movdqa    xmm4, xmm7
	psubw     xmm2, xmm3
	WELS_AbsW  xmm2, xmm1
	WELS_AbsW  xmm4, xmm1
    paddusw        xmm2, xmm4
    SUMW_HORIZON1  xmm2, xmm1 ; satd of H is stored in xmm2

	; DC result is stored in xmm1
	add       edi, 4
	movd      xmm1, edi
	paddw     xmm1, xmm5
	psrlw     xmm1, 3
	movdqa    xmm5, xmm1
	psllw     xmm1, 4

    ; get the satd of DC
    psubw          xmm6, xmm1
    WELS_AbsW  xmm6, xmm1
	WELS_AbsW  xmm7, xmm1
    paddusw        xmm6, xmm7
    SUMW_HORIZON1  xmm6, xmm1 ; satd of DC is stored in xmm6

    ; comparing order: DC H V
    mov       edx, [esp+32]
    movd      eax, xmm6
    movd      edi, xmm2
    movd      esi, xmm0
    and       eax, 0xffff
    shr       eax, 1
    and       edi, 0xffff
    shr       edi, 1
    and       esi, 0xffff
    shr       esi, 1
    add       eax, [esp+40]
    add       edi, [esp+44]
    add       esi, [esp+48]
    cmp       ax, di
    jg near   not_dc
    cmp       ax, si
    jg near   not_dc_h

    ; for DC mode
    movd      ebx, xmm5
    imul      ebx, 0x01010101
    movd	  xmm5, ebx
	pshufd    xmm5, xmm5, 0
	movdqa    [edx], xmm5
	mov       ebx, [esp+36]
	mov       dword [ebx], 0x02
	pop       edi
    pop       esi
    pop       ebx
    ret

not_dc:
    cmp       di, si
    jg near   not_dc_h

    ; for H mode
    SSE_DB_1_2REG  xmm6, xmm7
    mov       eax,  [esp+16]
	mov       ebx,  [esp+20]
    movzx     ecx,  byte [eax-1]
	movd      xmm0, ecx
    pmuludq   xmm0, xmm6

	movzx     ecx,  byte [eax+ebx-1]
	movd      xmm1, ecx
    pmuludq   xmm1, xmm6
%if 1
    punpckldq xmm0, xmm1
%else
	unpcklps  xmm0,	xmm1
%endif
	lea       eax,	[eax+ebx*2]
	movzx	  ecx,	byte [eax-1]
	movd	  xmm2,	ecx
    pmuludq   xmm2, xmm6

	movzx	  ecx,	byte [eax+ebx-1]
	movd	  xmm3,	ecx
    pmuludq   xmm3, xmm6
%if 1
    punpckldq  xmm2, xmm3
    punpcklqdq xmm0, xmm2
%else
	unpcklps  xmm2,	xmm3
	unpcklpd  xmm0,	xmm2
%endif
	movdqa	  [edx],xmm0

	mov       eax, edi
    mov       ebx, [esp+36]
	mov       dword [ebx], 0x01

    pop       edi
    pop       esi
    pop       ebx
    ret
not_dc_h:
    ; for V mode
    mov       eax,  [esp+16]
    sub		  eax,	[esp+20]
	movd	  xmm0,	[eax]
	pshufd	  xmm0,	xmm0, 0
	movdqa	  [edx],xmm0

	mov       eax, esi
    mov       ebx, [esp+36]
	mov       dword [ebx], 0x00

    pop       edi
    pop       esi
    pop       ebx
    ret
%endif