ref: 0dcb7584b55e5b2afbfae427595f4a696047a081
dir: /codec/decoder/core/x86/intra_pred.asm/
;*! ;* \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 and mmx function for intra predict operations(decoder) ;* ;* History ;* 18/09/2009 Created ;* 19/11/2010 Added ;* WelsDecoderI16x16LumaPredDcTop_sse2, WelsDecoderI16x16LumaPredDcNA_sse2, ;* WelsDecoderIChromaPredDcLeft_mmx, WelsDecoderIChromaPredDcTop_sse2 ;* and WelsDecoderIChromaPredDcNA_mmx ;* ;* ;*************************************************************************/ %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 mmx_0x02: dw 0x02, 0x00, 0x00, 0x00 align 16 sse2_dc_0x80: times 16 db 0x80 align 16 sse2_wd_0x02: times 8 dw 0x02 ;******************************************************************************* ; macros ;******************************************************************************* ;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 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 r0, [r0+2*r1] movzx r3, byte [r0-0x01] add r2, r3 movzx r3, byte [r0+r1-0x01] add r2, r3 %endmacro ;******************************************************************************* ; Code ;******************************************************************************* SECTION .text ;******************************************************************************* ; void WelsDecoderI4x4LumaPredH_sse2(uint8_t *pPred, const int32_t kiStride) ; ; pPred must align to 16 ;******************************************************************************* WELS_EXTERN WelsDecoderI4x4LumaPredH_sse2 %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d movzx r2, byte [r0-1] movd xmm0, r2d pmuludq xmm0, [mmx_01bytes] movzx r2, byte [r0+r1-1] movd xmm1, r2d pmuludq xmm1, [mmx_01bytes] lea r0, [r0+r1] movzx r2, byte [r0+r1-1] movd xmm2, r2d pmuludq xmm2, [mmx_01bytes] movzx r2, byte [r0+2*r1-1] movd xmm3, r2d pmuludq xmm3, [mmx_01bytes] sub r0, r1 movd [r0], xmm0 movd [r0+r1], xmm1 lea r0, [r0+2*r1] movd [r0], xmm2 movd [r0+r1], xmm3 ret ;******************************************************************************* ; void WelsDecoderI16x16LumaPredPlane_sse2(uint8_t *pPred, const int32_t kiStride); ;******************************************************************************* WELS_EXTERN WelsDecoderI16x16LumaPredPlane_sse2 push r3 push r4 %assign push_num 2 LOAD_2_PARA PUSH_XMM 8 SIGN_EXTENSION r1, r1d mov r4, r0 ; save r0 in r4 sub r0, 1 sub r0, r1 ;for H pxor xmm7, xmm7 movq xmm0, [r0] movdqa xmm5, [sse2_plane_dec] punpcklbw xmm0, xmm7 pmullw xmm0, xmm5 movq xmm1, [r0 + 9] movdqa xmm6, [sse2_plane_inc] punpcklbw xmm1, xmm7 pmullw xmm1, xmm6 psubw xmm1, xmm0 SUMW_HORIZON xmm1,xmm0,xmm2 movd r2d, xmm1 ; H += (i + 1) * (top[8 + i] - top[6 - i]); movsx r2, r2w imul r2, 5 add r2, 32 sar r2, 6 ; b = (5 * H + 32) >> 6; SSE2_Copy8Times xmm1, r2d ; xmm1 = b,b,b,b,b,b,b,b movzx r3, BYTE [r0+16] sub r0, 3 LOAD_COLUMN xmm0, xmm2, xmm3, xmm4, r0, r1 add r0, 3 movzx r2, BYTE [r0+8*r1] add r3, r2 shl r3, 4 ; a = (left[15*kiStride] + top[15]) << 4; sub r0, 3 add r0, r1 LOAD_COLUMN xmm7, xmm2, xmm3, xmm4, r0, r1 pxor xmm4, xmm4 punpckhbw xmm0, xmm4 pmullw xmm0, xmm5 punpckhbw xmm7, xmm4 pmullw xmm7, xmm6 psubw xmm7, xmm0 SUMW_HORIZON xmm7,xmm0,xmm2 movd r2d, xmm7 ; V movsx r2, r2w imul r2, 5 add r2, 32 sar r2, 6 ; c = (5 * V + 32) >> 6; SSE2_Copy8Times xmm4, r2d ; xmm4 = c,c,c,c,c,c,c,c mov r0, r4 add r3, 16 imul r2, -7 add r3, r2 ; s = a + 16 + (-7)*c SSE2_Copy8Times xmm0, r3d ; xmm0 = s,s,s,s,s,s,s,s xor r2, r2 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, r1 inc r2 cmp r2, 16 jnz get_i16x16_luma_pred_plane_sse2_1 POP_XMM pop r4 pop r3 ret ;******************************************************************************* ; void WelsDecoderI16x16LumaPredH_sse2(uint8_t *pPred, const int32_t kiStride); ;******************************************************************************* %macro SSE2_PRED_H_16X16_TWO_LINE_DEC 2 lea %1, [%1+%2*2] COPY_16_TIMES %1, xmm0 movdqa [%1], xmm0 COPY_16_TIMESS %1, xmm0, %2 movdqa [%1+%2], xmm0 %endmacro WELS_EXTERN WelsDecoderI16x16LumaPredH_sse2 %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d COPY_16_TIMES r0, xmm0 movdqa [r0], xmm0 COPY_16_TIMESS r0, xmm0, r1 movdqa [r0+r1], xmm0 SSE2_PRED_H_16X16_TWO_LINE_DEC r0, r1 SSE2_PRED_H_16X16_TWO_LINE_DEC r0, r1 SSE2_PRED_H_16X16_TWO_LINE_DEC r0, r1 SSE2_PRED_H_16X16_TWO_LINE_DEC r0, r1 SSE2_PRED_H_16X16_TWO_LINE_DEC r0, r1 SSE2_PRED_H_16X16_TWO_LINE_DEC r0, r1 SSE2_PRED_H_16X16_TWO_LINE_DEC r0, r1 ret ;******************************************************************************* ; void WelsDecoderI16x16LumaPredV_sse2(uint8_t *pPred, const int32_t kiStride); ;******************************************************************************* WELS_EXTERN WelsDecoderI16x16LumaPredV_sse2 %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d sub r0, r1 movdqa xmm0, [r0] movdqa [r0+r1], xmm0 lea r0, [r0+2*r1] movdqa [r0], xmm0 movdqa [r0+r1], xmm0 lea r0, [r0+2*r1] movdqa [r0], xmm0 movdqa [r0+r1], xmm0 lea r0, [r0+2*r1] movdqa [r0], xmm0 movdqa [r0+r1], xmm0 lea r0, [r0+2*r1] movdqa [r0], xmm0 movdqa [r0+r1], xmm0 lea r0, [r0+2*r1] movdqa [r0], xmm0 movdqa [r0+r1], xmm0 lea r0, [r0+2*r1] movdqa [r0], xmm0 movdqa [r0+r1], xmm0 lea r0, [r0+2*r1] movdqa [r0], xmm0 movdqa [r0+r1], xmm0 lea r0, [r0+2*r1] movdqa [r0], xmm0 ret ;******************************************************************************* ; void WelsDecoderIChromaPredPlane_sse2(uint8_t *pPred, const int32_t kiStride); ;******************************************************************************* WELS_EXTERN WelsDecoderIChromaPredPlane_sse2 push r3 push r4 %assign push_num 2 LOAD_2_PARA PUSH_XMM 8 SIGN_EXTENSION r1, r1d mov r4, r0 sub r0, 1 sub r0, r1 pxor mm7, mm7 movq mm0, [r0] movq mm5, [sse2_plane_dec_c] punpcklbw mm0, mm7 pmullw mm0, mm5 movq mm1, [r0 + 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 r2d, xmm1 movsx r2, r2w imul r2, 17 add r2, 16 sar r2, 5 ; b = (17 * H + 16) >> 5; SSE2_Copy8Times xmm1, r2d ; mm1 = b,b,b,b,b,b,b,b movzx r3, BYTE [r0+8] sub r0, 3 LOAD_COLUMN_C mm0, mm2, mm3, mm4, r0, r1 add r0, 3 movzx r2, BYTE [r0+4*r1] add r3, r2 shl r3, 4 ; a = (left[7*kiStride] + top[7]) << 4; sub r0, 3 add r0, r1 LOAD_COLUMN_C mm7, mm2, mm3, mm4, r0, r1 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 r2d, xmm7 ; V movsx r2, r2w imul r2, 17 add r2, 16 sar r2, 5 ; c = (17 * V + 16) >> 5; SSE2_Copy8Times xmm4, r2d ; mm4 = c,c,c,c,c,c,c,c mov r0, r4 add r3, 16 imul r2, -3 add r3, r2 ; s = a + 16 + (-3)*c SSE2_Copy8Times xmm0, r3d ; xmm0 = s,s,s,s,s,s,s,s xor r2, r2 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, r1 inc r2 cmp r2, 8 jnz get_i_chroma_pred_plane_sse2_1 POP_XMM pop r4 pop r3 WELSEMMS ret ;******************************************************************************* ; 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 ; pPred[7] = ([6]+[0]*2+[1]+2)/4 ; ; void WelsDecoderI4x4LumaPredDDR_mmx(uint8_t *pPred, const int32_t kiStride) ; ;******************************************************************************* WELS_EXTERN WelsDecoderI4x4LumaPredDDR_mmx %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d mov r2, r0 movq mm1,[r2+r1-8] ;get value of 11,decreasing 8 is trying to improve the performance of movq mm1[8] = 11 movq mm2,[r2-8] ;get value of 6 mm2[8] = 6 sub r2, r1 ;mov eax to above line of current block(postion of 1) punpckhbw mm2,[r2-8] ;mm2[8](high 8th byte of mm2) = [0](value of 0), mm2[7]= [6] movd mm3,[r2] ;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 r2,[r2+r1*2-8h] ;set eax point to 12 movq mm4,[r2+r1] ;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,[r2+r1*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 lea r0,[r0+r1] movd [r0+2*r1],mm2 sub r0,r1 psrlq mm2,8 movd [r0+2*r1],mm2 psrlq mm2,8 movd [r0+r1],mm2 psrlq mm2,8 movd [r0],mm2 WELSEMMS ret ;******************************************************************************* ; void WelsDecoderIChromaPredH_mmx(uint8_t *pPred, const int32_t kiStride) ; copy 8 pixel of 8 line from left ;******************************************************************************* %macro MMX_PRED_H_8X8_ONE_LINE 4 movq %1, [%3-8] psrlq %1, 38h pmullw %1, [mmx_01bytes] pshufw %1, %1, 0 movq [%4], %1 %endmacro %macro MMX_PRED_H_8X8_ONE_LINEE 4 movq %1, [%3+r1-8] psrlq %1, 38h pmullw %1, [mmx_01bytes] pshufw %1, %1, 0 movq [%4], %1 %endmacro WELS_EXTERN WelsDecoderIChromaPredH_mmx %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d mov r2, r0 movq mm0, [r2-8] psrlq mm0, 38h pmullw mm0, [mmx_01bytes] pshufw mm0, mm0, 0 movq [r0], mm0 MMX_PRED_H_8X8_ONE_LINEE mm0, mm1, r2, r0+r1 lea r2, [r2+r1*2] MMX_PRED_H_8X8_ONE_LINE mm0, mm1, r2, r0+2*r1 lea r0, [r0+2*r1] MMX_PRED_H_8X8_ONE_LINEE mm0, mm1, r2, r0+r1 lea r2, [r2+r1*2] MMX_PRED_H_8X8_ONE_LINE mm0, mm1, r2, r0+2*r1 lea r0, [r0+2*r1] MMX_PRED_H_8X8_ONE_LINEE mm0, mm1, r2, r0+r1 lea r2, [r2+r1*2] MMX_PRED_H_8X8_ONE_LINE mm0, mm1, r2, r0+2*r1 lea r0, [r0+2*r1] MMX_PRED_H_8X8_ONE_LINEE mm0, mm1, r2, r0+r1 WELSEMMS ret ;******************************************************************************* ; void WelsDecoderIChromaPredV_mmx(uint8_t *pPred, const int32_t kiStride) ; copy 8 pixels from top 8 pixels ;******************************************************************************* WELS_EXTERN WelsDecoderIChromaPredV_mmx %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d sub r0, r1 movq mm0, [r0] movq [r0+r1], mm0 movq [r0+2*r1], mm0 lea r0, [r0+2*r1] movq [r0+r1], mm0 movq [r0+2*r1], mm0 lea r0, [r0+2*r1] movq [r0+r1], mm0 movq [r0+2*r1], mm0 lea r0, [r0+2*r1] movq [r0+r1], mm0 movq [r0+2*r1], mm0 WELSEMMS ret ;******************************************************************************* ; 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 WelsDecoderI4x4LumaPredHD_mmx(uint8_t *pPred, const int32_t kiStride) ;******************************************************************************* WELS_EXTERN WelsDecoderI4x4LumaPredHD_mmx %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d mov r2, r0 sub r2, r1 movd mm0, [r2-1] ; mm0 = [xx xx xx xx t2 t1 t0 lt] psllq mm0, 20h ; mm0 = [t2 t1 t0 lt xx xx xx xx] movd mm1, [r2+2*r1-4] punpcklbw mm1, [r2+r1-4] ; mm1[7] = l0, mm1[6] = l1 lea r2, [r2+2*r1] movd mm2, [r2+2*r1-4] punpcklbw mm2, [r2+r1-4] ; 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 lea r0, [r0+r1] movd [r0+2*r1], mm3 sub r0, r1 psrlq mm3, 10h movd [r0+2*r1], mm3 psrlq mm3, 10h movd [r0+r1], mm3 WELSEMMS ret ;******************************************************************************* ; 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 WelsDecoderI4x4LumaPredHU_mmx(uint8_t *pPred, const int32_t kiStride) ;******************************************************************************* WELS_EXTERN WelsDecoderI4x4LumaPredHU_mmx %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d mov r2, r0 movd mm0, [r2-4] ; mm0[3] = l0 punpcklbw mm0, [r2+r1-4] ; mm0[7] = l1, mm0[6] = l0 lea r2, [r2+2*r1] movd mm2, [r2-4] ; mm2[3] = l2 movd mm4, [r2+r1-4] ; 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 lea r0, [r0+r1] movd [r0+2*r1], mm4 sub r0, r1 movd [r0], mm1 psrlq mm1, 10h movd [r0+r1], mm1 psrlq mm1, 10h movd [r0+2*r1], mm1 WELSEMMS ret ;******************************************************************************* ; 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 WelsDecoderI4x4LumaPredVR_mmx(uint8_t *pPred, const int32_t kiStride) ;******************************************************************************* WELS_EXTERN WelsDecoderI4x4LumaPredVR_mmx %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d mov r2, r0 sub r2, r1 movq mm0, [r2-1] ; mm0 = [xx xx xx t3 t2 t1 t0 lt] psllq mm0, 18h ; mm0 = [t3 t2 t1 t0 lt xx xx xx] movd mm1, [r2+2*r1-4] punpcklbw mm1, [r2+r1-4] ; mm1[7] = l0, mm1[6] = l1 lea r2, [r2+2*r1] movq mm2, [r2+r1-8] ; 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+r1], 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+2*r1], mm4 psllq mm2, 8h pxor mm5, mm2 ; mm5 = [xx xx xx xx g f e j] lea r0, [r0+2*r1] movd [r0+r1], mm5 WELSEMMS ret ;******************************************************************************* ; 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 WelsDecoderI4x4LumaPredDDL_mmx(uint8_t *pPred, const int32_t kiStride) ;******************************************************************************* WELS_EXTERN WelsDecoderI4x4LumaPredDDL_mmx %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d mov r2, r0 sub r2, r1 movq mm0, [r2] ; 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+r1], mm0 psrlq mm0, 8h movd [r0+2*r1], mm0 psrlq mm0, 8h lea r0, [r0+2*r1] movd [r0+r1], mm0 WELSEMMS ret ;******************************************************************************* ; 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 WelsDecoderI4x4LumaPredVL_mmx(uint8_t *pPred, const int32_t kiStride) ;******************************************************************************* WELS_EXTERN WelsDecoderI4x4LumaPredVL_mmx %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d mov r2, r0 sub r2, r1 movq mm0, [r2] ; 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+2*r1], mm3 movd [r0+r1], mm2 psrlq mm2, 8h lea r0, [r0+2*r1] movd [r0+r1], mm2 WELSEMMS ret ;******************************************************************************* ; ; void WelsDecoderIChromaPredDc_sse2(uint8_t *pPred, const int32_t kiStride) ;******************************************************************************* WELS_EXTERN WelsDecoderIChromaPredDc_sse2 push r3 push r4 %assign push_num 2 LOAD_2_PARA SIGN_EXTENSION r1, r1d mov r4, r0 sub r0, r1 movq mm0, [r0] movzx r2, byte [r0+r1-0x01] ; l1 lea r0, [r0+2*r1] movzx r3, byte [r0-0x01] ; l2 add r2, r3 movzx r3, byte [r0+r1-0x01] ; l3 add r2, r3 lea r0, [r0+2*r1] movzx r3, byte [r0-0x01] ; l4 add r2, r3 movd mm1, r2d ; mm1 = l1+l2+l3+l4 movzx r2, byte [r0+r1-0x01] ; l5 lea r0, [r0+2*r1] movzx r3, byte [r0-0x01] ; l6 add r2, r3 movzx r3, byte [r0+r1-0x01] ; l7 add r2, r3 lea r0, [r0+2*r1] movzx r3, byte [r0-0x01] ; l8 add r2, r3 movd mm2, r2d ; 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 [r4], mm0 movq [r4+r1], mm0 movq [r4+2*r1], mm0 lea r4, [r4+2*r1] movq [r4+r1], mm0 movq [r4+2*r1], mm1 lea r4, [r4+2*r1] movq [r4+r1], mm1 movq [r4+2*r1], mm1 lea r4, [r4+2*r1] movq [r4+r1], mm1 pop r4 pop r3 WELSEMMS ret ;******************************************************************************* ; ; void WelsDecoderI16x16LumaPredDc_sse2(uint8_t *pPred, const int32_t kiStride) ;******************************************************************************* WELS_EXTERN WelsDecoderI16x16LumaPredDc_sse2 push r3 push r4 %assign push_num 2 LOAD_2_PARA SIGN_EXTENSION r1, r1d mov r4, r0 sub r0, r1 movdqa xmm0, [r0] ; 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 r2, byte [r0+r1-0x01] movzx r3, byte [r0+2*r1-0x01] add r2, r3 lea r0, [r0+r1] 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 r2, 0x10 movd xmm1, r2d paddw xmm0, xmm1 psrld xmm0, 0x05 pmuludq xmm0, [mmx_01bytes] pshufd xmm0, xmm0, 0 movdqa [r4], xmm0 movdqa [r4+r1], xmm0 movdqa [r4+2*r1], xmm0 lea r4, [r4+2*r1] movdqa [r4+r1], xmm0 movdqa [r4+2*r1], xmm0 lea r4, [r4+2*r1] movdqa [r4+r1], xmm0 movdqa [r4+2*r1], xmm0 lea r4, [r4+2*r1] movdqa [r4+r1], xmm0 movdqa [r4+2*r1], xmm0 lea r4, [r4+2*r1] movdqa [r4+r1], xmm0 movdqa [r4+2*r1], xmm0 lea r4, [r4+2*r1] movdqa [r4+r1], xmm0 movdqa [r4+2*r1], xmm0 lea r4, [r4+2*r1] movdqa [r4+r1], xmm0 movdqa [r4+2*r1], xmm0 lea r4, [r4+2*r1] movdqa [r4+r1], xmm0 pop r4 pop r3 ret ;******************************************************************************* ; for intra prediction as follows, 11/19/2010 ;******************************************************************************* ;******************************************************************************* ; void WelsDecoderI16x16LumaPredDcTop_sse2(uint8_t *pPred, const int32_t kiStride) ;******************************************************************************* WELS_EXTERN WelsDecoderI16x16LumaPredDcTop_sse2 %assign push_num 0 LOAD_2_PARA PUSH_XMM 8 SIGN_EXTENSION r1, r1d mov r2, r0 sub r2, r1 movdqa xmm0, [r2] ; pPred-kiStride, top line pxor xmm7, xmm7 psadbw xmm0, xmm7 movdqa xmm1, xmm0 psrldq xmm1, 8 paddw xmm0, xmm1 xor r2, r2 movd r2d, xmm0 ;movdqa xmm1, xmm0 ;punpcklbw xmm0, xmm7 ;punpckhbw xmm1, xmm7 ;paddw xmm0, xmm1 ; (ub.max(ff) << 4) will not excceed of uw, so can perform it in unit of unsigned word scope ;pshufd xmm1, xmm0, 04eh ; 01001110, w3w2w1w0,w7w6w5w4 ;paddw xmm0, xmm1 ; w3+7 w2+6 w1+5 w0+4 w3+7 w2+6 w1+5 w0+4 ;pshufd xmm1, xmm0, 0b1h ; 10110001, w1+5 w0+4 w3+7 w2+6 w1+5 w0+4 w3+7 w2+6 ;paddw xmm0, xmm1 ; w_o w_e w_o w_e w_o w_e w_o w_e (w_o=1+3+5+7, w_e=0+2+4+6) ;pshuflw xmm1, xmm0, 0b1h ; 10110001 ;paddw xmm0, xmm1 ; sum in word unit (x8) ;xor r3, r3 ;movd r3d, xmm0 ;and edx, 0ffffh add r2, 8 sar r2, 4 SSE2_Copy16Times xmm1, r2d ;mov dh, dl ;mov r2, edx ;shl r2, 010h ;or edx, r2 ;movd xmm1, edx ;pshufd xmm0, xmm1, 00h ;movdqa xmm1, xmm0 movdqa xmm0, xmm1 lea r2, [2*r1+r1] ; 3*kiStride movdqa [r0], xmm0 movdqa [r0+r1], xmm1 movdqa [r0+2*r1], xmm0 movdqa [r0+r2], xmm1 lea r0, [r0+4*r1] movdqa [r0], xmm0 movdqa [r0+r1], xmm1 movdqa [r0+2*r1], xmm0 movdqa [r0+r2], xmm1 lea r0, [r0+4*r1] movdqa [r0], xmm0 movdqa [r0+r1], xmm1 movdqa [r0+2*r1], xmm0 movdqa [r0+r2], xmm1 lea r0, [r0+4*r1] movdqa [r0], xmm0 movdqa [r0+r1], xmm1 movdqa [r0+2*r1], xmm0 movdqa [r0+r2], xmm1 POP_XMM ret ;******************************************************************************* ; void WelsDecoderI16x16LumaPredDcNA_sse2(uint8_t *pPred, const int32_t kiStride) ;******************************************************************************* WELS_EXTERN WelsDecoderI16x16LumaPredDcNA_sse2 %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d lea r2, [2*r1+r1] ; 3*kiStride movdqa xmm0, [sse2_dc_0x80] movdqa xmm1, xmm0 movdqa [r0], xmm0 movdqa [r0+r1], xmm1 movdqa [r0+2*r1], xmm0 movdqa [r0+r2], xmm1 lea r0, [r0+4*r1] movdqa [r0], xmm0 movdqa [r0+r1], xmm1 movdqa [r0+2*r1], xmm0 movdqa [r0+r2], xmm1 lea r0, [r0+4*r1] movdqa [r0], xmm0 movdqa [r0+r1], xmm1 movdqa [r0+2*r1], xmm0 movdqa [r0+r2], xmm1 lea r0, [r0+4*r1] movdqa [r0], xmm0 movdqa [r0+r1], xmm1 movdqa [r0+2*r1], xmm0 movdqa [r0+r2], xmm1 ret ;******************************************************************************* ; void WelsDecoderIChromaPredDcLeft_mmx(uint8_t *pPred, const int32_t kiStride) ;******************************************************************************* WELS_EXTERN WelsDecoderIChromaPredDcLeft_mmx push r3 push r4 %assign push_num 2 LOAD_2_PARA SIGN_EXTENSION r1, r1d mov r4, r0 ; for left dec r0 xor r2, r2 xor r3, r3 movzx r2, byte [r0] movzx r3, byte [r0+r1] add r2, r3 lea r0, [r0+2*r1] movzx r3, byte [r0] add r2, r3 movzx r3, byte [r0+r1] add r2, r3 add r2, 02h sar r2, 02h ;SSE2_Copy16Times mm0, r2d mov r3, r2 sal r3, 8 or r2, r3 movd mm1, r2d pshufw mm0, mm1, 00h ;mov bh, bl ;movd mm1, ebx ;pshufw mm0, mm1, 00h ; up64 movq mm1, mm0 xor r2, r2 lea r0, [r0+2*r1] movzx r2, byte [r0] movzx r3, byte [r0+r1] add r2, r3 lea r0, [r0+2*r1] movzx r3, byte [r0] add r2, r3 movzx r3, byte [r0+r1] add r2, r3 add r2, 02h sar r2, 02h mov r3, r2 sal r3, 8 or r2, r3 movd mm3, r2d pshufw mm2, mm3, 00h ;mov bh, bl ;movd mm3, ebx ;pshufw mm2, mm3, 00h ; down64 ;SSE2_Copy16Times mm2, r2d movq mm3, mm2 lea r2, [2*r1+r1] movq [r4], mm0 movq [r4+r1], mm1 movq [r4+2*r1], mm0 movq [r4+r2], mm1 lea r4, [r4+4*r1] movq [r4], mm2 movq [r4+r1], mm3 movq [r4+2*r1], mm2 movq [r4+r2], mm3 pop r4 pop r3 emms ret ;******************************************************************************* ; void WelsDecoderIChromaPredDcTop_sse2(uint8_t *pPred, const int32_t kiStride) ;******************************************************************************* WELS_EXTERN WelsDecoderIChromaPredDcTop_sse2 %assign push_num 0 LOAD_2_PARA PUSH_XMM 8 SIGN_EXTENSION r1, r1d mov r2, r0 sub r2, r1 movq xmm0, [r2] ; top: 8x1 pixels pxor xmm7, xmm7 punpcklbw xmm0, xmm7 ; ext 8x2 words pshufd xmm1, xmm0, 0B1h ; 10110001 B, w5 w4 w7 w6 w1 w0 w3 w2 paddw xmm0, xmm1 ; w5+7 w4+6 w5+7 w4+6 w1+3 w0+2 w1+3 w0+2 movdqa xmm1, xmm0 pshuflw xmm2, xmm0, 0B1h ; 10110001 B, .. w0+2 w1+3 w0+2 w1+3 pshufhw xmm3, xmm1, 0B1h ; 10110001 B, w4+6 w5+7 w4+6 w5+7 .. paddw xmm0, xmm2 ; .. w0+..+3 w0+..+3 w0+..+3 w0+..+3 paddw xmm1, xmm3 ; w4+..+7 w4+..+7 w4+..+7 w4+..+7 .. punpckhqdq xmm1, xmm7 punpcklqdq xmm0, xmm1 ; sum1 sum1 sum1 sum1 sum0 sum0 sum0 sum0 movdqa xmm6, [sse2_wd_0x02] paddw xmm0, xmm6 psraw xmm0, 02h packuswb xmm0, xmm7 lea r2, [2*r1+r1] movq [r0], xmm0 movq [r0+r1], xmm0 movq [r0+2*r1], xmm0 movq [r0+r2], xmm0 lea r0, [r0+4*r1] movq [r0], xmm0 movq [r0+r1], xmm0 movq [r0+2*r1], xmm0 movq [r0+r2], xmm0 POP_XMM ret ;******************************************************************************* ; void WelsDecoderIChromaPredDcNA_mmx(uint8_t *pPred, const int32_t kiStride) ;******************************************************************************* WELS_EXTERN WelsDecoderIChromaPredDcNA_mmx %assign push_num 0 LOAD_2_PARA SIGN_EXTENSION r1, r1d lea r2, [2*r1+r1] movq mm0, [sse2_dc_0x80] movq mm1, mm0 movq [r0], mm0 movq [r0+r1], mm1 movq [r0+2*r1], mm0 movq [r0+r2], mm1 lea r0, [r0+4*r1] movq [r0], mm0 movq [r0+r1], mm1 movq [r0+2*r1], mm0 movq [r0+r2], mm1 emms ret