📄 idct_mmx.asm
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movq mm4, mm5 ; a0 psraw mm0, SHIFT_INV_COL ; dst5 movq [%2+1*16], mm3 paddsw mm5, mm1 ; a0+b0 movq [%2+2*16], mm6 psubsw mm4, mm1 ; a0-b0; movq mm3, [SCRATCH+8] ; load b3 movq mm3, [%2+5*16] ; load b3 psraw mm5, SHIFT_INV_COL ; dst0 movq mm6, mm2 ; a3 psraw mm4, SHIFT_INV_COL ; dst7 movq [%2+5*16], mm0 paddsw mm2, mm3 ; a3+b3 movq [%2+6*16], mm7 psubsw mm6, mm3 ; a3-b3 movq [%2+0*16], mm5 psraw mm2, SHIFT_INV_COL ; dst3 movq [%2+7*16], mm4 psraw mm6, SHIFT_INV_COL ; dst4 movq [%2+3*16], mm2 movq [%2+4*16], mm6%endmacrosection .text;=============================================================================;; void idct_mmx (short * const src_result);;;=============================================================================align 16cglobal idct_mmxidct_mmx mov eax, dword [esp + 4] DCT_8_INV_ROW_1 eax+0, eax+0, tab_i_04, rounder_0 DCT_8_INV_ROW_1 eax+16, eax+16, tab_i_17, rounder_1 DCT_8_INV_ROW_1 eax+32, eax+32, tab_i_26, rounder_2 DCT_8_INV_ROW_1 eax+48, eax+48, tab_i_35, rounder_3 DCT_8_INV_ROW_1 eax+64, eax+64, tab_i_04, rounder_4 DCT_8_INV_ROW_1 eax+80, eax+80, tab_i_35, rounder_5 DCT_8_INV_ROW_1 eax+96, eax+96, tab_i_26, rounder_6 DCT_8_INV_ROW_1 eax+112, eax+112, tab_i_17, rounder_7 DCT_8_INV_COL_4 eax+0,eax+0 DCT_8_INV_COL_4 eax+8,eax+8 ret ;=============================================================================;; void idct_sse (short * const src_result);;;=============================================================================align 16cglobal idct_xmmidct_xmm mov eax, dword [esp + 4] DCT_8_INV_ROW_1_sse eax+0, eax+0, tab_i_04_sse, rounder_0 DCT_8_INV_ROW_1_sse eax+16, eax+16, tab_i_17_sse, rounder_1 DCT_8_INV_ROW_1_sse eax+32, eax+32, tab_i_26_sse, rounder_2 DCT_8_INV_ROW_1_sse eax+48, eax+48, tab_i_35_sse, rounder_3 DCT_8_INV_ROW_1_sse eax+64, eax+64, tab_i_04_sse, rounder_4 DCT_8_INV_ROW_1_sse eax+80, eax+80, tab_i_35_sse, rounder_5 DCT_8_INV_ROW_1_sse eax+96, eax+96, tab_i_26_sse, rounder_6 DCT_8_INV_ROW_1_sse eax+112, eax+112, tab_i_17_sse, rounder_7 DCT_8_INV_COL_4 eax+0, eax+0 DCT_8_INV_COL_4 eax+8, eax+8 ret;=============================================================================; The code below this line is for SSE2-equipped processors; By Dmitry Rozhdestvensky;=============================================================================section .dataalign 16tab_i_04_s2 dw 16384, 21407, 16384, 8867 ; movq-> w05 w04 w01 w00 dw 16384, -8867, 16384, -21407 ; w13 w12 w09 w08 dw 16384, 8867, -16384, -21407 ; w07 w06 w03 w02 dw -16384, 21407, 16384, -8867 ; w15 w14 w11 w10 dw 22725, 19266, 19266, -4520 ; w21 w20 w17 w16 dw 12873, -22725, 4520, -12873 ; w29 w28 w25 w24 dw 12873, 4520, -22725, -12873 ; w23 w22 w19 w18 dw 4520, 19266, 19266, -22725 ; w31 w30 w27 w26; Table for rows 1,7 - constants are multiplied by cos_1_16tab_i_17_s2 dw 22725, 29692, 22725, 12299 ; movq-> w05 w04 w01 w00 dw 22725, -12299, 22725, -29692 ; w13 w12 w09 w08 dw 22725, 12299, -22725, -29692 ; w07 w06 w03 w02 dw -22725, 29692, 22725, -12299 ; w15 w14 w11 w10 dw 31521, 26722, 26722, -6270 ; w21 w20 w17 w16 dw 17855, -31521, 6270, -17855 ; w29 w28 w25 w24 dw 17855, 6270, -31521, -17855 ; w23 w22 w19 w18 dw 6270, 26722, 26722, -31521 ; w31 w30 w27 w26; Table for rows 2,6 - constants are multiplied by cos_2_16tab_i_26_s2 dw 21407, 27969, 21407, 11585 ; movq-> w05 w04 w01 w00 dw 21407, -11585, 21407, -27969 ; w13 w12 w09 w08 dw 21407, 11585, -21407, -27969 ; w07 w06 w03 w02 dw -21407, 27969, 21407, -11585 ; w15 w14 w11 w10 dw 29692, 25172, 25172, -5906 ; w21 w20 w17 w16 dw 16819, -29692, 5906, -16819 ; w29 w28 w25 w24 dw 16819, 5906, -29692, -16819 ; w23 w22 w19 w18 dw 5906, 25172, 25172, -29692 ; w31 w30 w27 w26; Table for rows 3,5 - constants are multiplied by cos_3_16tab_i_35_s2 dw 19266, 25172, 19266, 10426 ; movq-> w05 w04 w01 w00 dw 19266, -10426, 19266, -25172 ; w13 w12 w09 w08 dw 19266, 10426, -19266, -25172 ; w07 w06 w03 w02 dw -19266, 25172, 19266, -10426 ; w15 w14 w11 w10 dw 26722, 22654, 22654, -5315 ; w21 w20 w17 w16 dw 15137, -26722, 5315, -15137 ; w29 w28 w25 w24 dw 15137, 5315, -26722, -15137 ; w23 w22 w19 w18 dw 5315, 22654, 22654, -26722 ; w31 w30 w27 w26%if SHIFT_INV_ROW == 12 ; assume SHIFT_INV_ROW == 12rounder_2_0 dd 65536, 65536 dd 65536, 65536rounder_2_4 dd 0, 0 dd 0, 0rounder_2_1 dd 7195, 7195 dd 7195, 7195rounder_2_7 dd 1024, 1024 dd 1024, 1024rounder_2_2 dd 4520, 4520 dd 4520, 4520rounder_2_6 dd 1024, 1024 dd 1024, 1024rounder_2_3 dd 2407, 2407 dd 2407, 2407rounder_2_5 dd 240, 240 dd 240, 240%elif SHIFT_INV_ROW == 11 ; assume SHIFT_INV_ROW == 11rounder_2_0 dd 65536, 65536 dd 65536, 65536rounder_2_4 dd 0, 0 dd 0, 0rounder_2_1 dd 3597, 3597 dd 3597, 3597rounder_2_7 dd 512, 512 dd 512, 512rounder_2_2 dd 2260, 2260 dd 2260, 2260rounder_2_6 dd 512, 512 dd 512, 512rounder_2_3 dd 1203, 1203 dd 1203, 1203rounder_2_5 dd 120, 120 dd 120, 120%else%error invalid _SHIFT_INV_ROW_%endif tg_1_16_2 dw 13036, 13036, 13036, 13036 ; tg * (2<<16) + 0.5 dw 13036, 13036, 13036, 13036 tg_2_16_2 dw 27146, 27146, 27146, 27146 ; tg * (2<<16) + 0.5 dw 27146, 27146, 27146, 27146 tg_3_16_2 dw -21746, -21746, -21746, -21746 ; tg * (2<<16) + 0.5 dw -21746, -21746, -21746, -21746ocos_4_16_2 dw 23170, 23170, 23170, 23170 ; cos * (2<<15) + 0.5 dw 23170, 23170, 23170, 23170%macro DCT_8_INV_ROW_1_sse2 4 pshufhw xmm1,[%1],11011000b ;x 75643210 pshuflw xmm1,xmm1,11011000b ;x 75643120 pshufd xmm0,xmm1,00000000b ;x 20202020 pmaddwd xmm0,[%3] ;w 13 12 9 8 5410 ;a 3210 first part pshufd xmm2,xmm1,10101010b ;x 64646464 pmaddwd xmm2,[%3+16] ;w 15 14 11 10 7632 ;a 3210 second part paddd xmm2,xmm0 ;a 3210 ready paddd xmm2,[%4] ;must be 4 dwords long, not 2 as for sse1 movdqa xmm5,xmm2 pshufd xmm3,xmm1,01010101b ;x 31313131 pmaddwd xmm3,[%3+32] ;w 29 28 25 24 21 20 17 16 ;b 3210 first part pshufd xmm4,xmm1,11111111b ;x 75757575 pmaddwd xmm4,[%3+48] ;w 31 30 27 26 23 22 19 18 ;b 3210 second part paddd xmm3,xmm4 ;b 3210 ready paddd xmm2,xmm3 ;will be y 3210 psubd xmm5,xmm3 ;will be y 4567 psrad xmm2,SHIFT_INV_ROW psrad xmm5,SHIFT_INV_ROW packssdw xmm2,xmm5 ;y 45673210 pshufhw xmm6,xmm2,00011011b ;y 76543210 movdqa [%2],xmm6 %endmacro%macro DCT_8_INV_COL_4_sse2 2 movdqa xmm0,[%1+16*0] ;x0 (all columns) movdqa xmm2,[%1+16*4] ;x4 movdqa xmm1,xmm0 movdqa xmm4,[%1+16*2] ;x2 movdqa xmm5,[%1+16*6] ;x6 movdqa xmm6,[tg_2_16_2] movdqa xmm7,xmm6 paddsw xmm0,xmm2 ;u04=x0+x4 psubsw xmm1,xmm2 ;v04=x0-x4 movdqa xmm3,xmm0 movdqa xmm2,xmm1 pmulhw xmm6,xmm4 pmulhw xmm7,xmm5 psubsw xmm6,xmm5 ;v26=x2*T2-x6 paddsw xmm7,xmm4 ;u26=x6*T2+x2 paddsw xmm1,xmm6 ;a1=v04+v26 paddsw xmm0,xmm7 ;a0=u04+u26 psubsw xmm2,xmm6 ;a2=v04-v26 psubsw xmm3,xmm7 ;a3=u04-u26 movdqa [%2+16*0],xmm0 ;store a3-a0 to movdqa [%2+16*6],xmm1 ;free registers movdqa [%2+16*2],xmm2 movdqa [%2+16*4],xmm3 movdqa xmm0,[%1+16*1] ;x1 movdqa xmm1,[%1+16*7] ;x7 movdqa xmm2,[tg_1_16_2] movdqa xmm3,xmm2 movdqa xmm4,[%1+16*3] ;x3 movdqa xmm5,[%1+16*5] ;x5 movdqa xmm6,[tg_3_16_2] movdqa xmm7,xmm6 pmulhw xmm2,xmm0 pmulhw xmm3,xmm1 psubsw xmm2,xmm1 ;v17=x1*T1-x7 paddsw xmm3,xmm0 ;u17=x7*T1+x1 movdqa xmm0,xmm3 ;u17 movdqa xmm1,xmm2 ;v17 pmulhw xmm6,xmm4 ;x3*(t3-1) pmulhw xmm7,xmm5 ;x5*(t3-1) paddsw xmm6,xmm4 paddsw xmm7,xmm5 psubsw xmm6,xmm5 ;v35=x3*T3-x5 paddsw xmm7,xmm4 ;u35=x5*T3+x3 movdqa xmm4,[ocos_4_16_2] paddsw xmm0,xmm7 ;b0=u17+u35 psubsw xmm1,xmm6 ;b3=v17-v35 psubsw xmm3,xmm7 ;u12=u17-v35 paddsw xmm2,xmm6 ;v12=v17+v35 movdqa xmm5,xmm3 paddsw xmm3,xmm2 ;tb1 psubsw xmm5,xmm2 ;tb2 pmulhw xmm5,xmm4 pmulhw xmm4,xmm3 paddsw xmm5,xmm5 paddsw xmm4,xmm4 movdqa xmm6,[%2+16*0] ;a0 movdqa xmm7,xmm6 movdqa xmm2,[%2+16*4] ;a3 movdqa xmm3,xmm2 paddsw xmm6,xmm0 psubsw xmm7,xmm0 psraw xmm6,SHIFT_INV_COL ;y0=a0+b0 psraw xmm7,SHIFT_INV_COL ;y7=a0-b0 movdqa [%2+16*0],xmm6 movdqa [%2+16*7],xmm7 paddsw xmm2,xmm1 psubsw xmm3,xmm1 psraw xmm2,SHIFT_INV_COL ;y3=a3+b3 psraw xmm3,SHIFT_INV_COL ;y4=a3-b3 movdqa [%2+16*3],xmm2 movdqa [%2+16*4],xmm3 movdqa xmm0,[%2+16*6] ;a1 movdqa xmm1,xmm0 movdqa xmm6,[%2+16*2] ;a2 movdqa xmm7,xmm6 paddsw xmm0,xmm4 psubsw xmm1,xmm4 psraw xmm0,SHIFT_INV_COL ;y1=a1+b1 psraw xmm1,SHIFT_INV_COL ;y6=a1-b1 movdqa [%2+16*1],xmm0 movdqa [%2+16*6],xmm1 paddsw xmm6,xmm5 psubsw xmm7,xmm5 psraw xmm6,SHIFT_INV_COL ;y2=a2+b2 psraw xmm7,SHIFT_INV_COL ;y5=a2-b2 movdqa [%2+16*2],xmm6 movdqa [%2+16*5],xmm7%endmacrosection .textalign 16cglobal idct_sse2idct_sse2 mov eax, dword [esp + 4] DCT_8_INV_ROW_1_sse2 eax+0, eax+0, tab_i_04_s2, rounder_2_0 DCT_8_INV_ROW_1_sse2 eax+16, eax+16, tab_i_17_s2, rounder_2_1 DCT_8_INV_ROW_1_sse2 eax+32, eax+32, tab_i_26_s2, rounder_2_2 DCT_8_INV_ROW_1_sse2 eax+48, eax+48, tab_i_35_s2, rounder_2_3 DCT_8_INV_ROW_1_sse2 eax+64, eax+64, tab_i_04_s2, rounder_2_4 DCT_8_INV_ROW_1_sse2 eax+80, eax+80, tab_i_35_s2, rounder_2_5 DCT_8_INV_ROW_1_sse2 eax+96, eax+96, tab_i_26_s2, rounder_2_6 DCT_8_INV_ROW_1_sse2 eax+112, eax+112, tab_i_17_s2, rounder_2_7 DCT_8_INV_COL_4_sse2 eax, eax ;DCT_8_INV_COL_4 eax+8, eax+8 ret⌨️ 快捷键说明
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