| ; |
| ; jfdctint.asm - accurate integer FDCT (SSE2) |
| ; |
| ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB |
| ; |
| ; Based on the x86 SIMD extension for IJG JPEG library |
| ; Copyright (C) 1999-2006, MIYASAKA Masaru. |
| ; For conditions of distribution and use, see copyright notice in jsimdext.inc |
| ; |
| ; This file should be assembled with NASM (Netwide Assembler), |
| ; can *not* be assembled with Microsoft's MASM or any compatible |
| ; assembler (including Borland's Turbo Assembler). |
| ; NASM is available from http://nasm.sourceforge.net/ or |
| ; http://sourceforge.net/project/showfiles.php?group_id=6208 |
| ; |
| ; This file contains a slow-but-accurate integer implementation of the |
| ; forward DCT (Discrete Cosine Transform). The following code is based |
| ; directly on the IJG's original jfdctint.c; see the jfdctint.c for |
| ; more details. |
| ; |
| ; [TAB8] |
| |
| %include "jsimdext.inc" |
| %include "jdct.inc" |
| |
| ; -------------------------------------------------------------------------- |
| |
| %define CONST_BITS 13 |
| %define PASS1_BITS 2 |
| |
| %define DESCALE_P1 (CONST_BITS-PASS1_BITS) |
| %define DESCALE_P2 (CONST_BITS+PASS1_BITS) |
| |
| %if CONST_BITS == 13 |
| F_0_298 equ 2446 ; FIX(0.298631336) |
| F_0_390 equ 3196 ; FIX(0.390180644) |
| F_0_541 equ 4433 ; FIX(0.541196100) |
| F_0_765 equ 6270 ; FIX(0.765366865) |
| F_0_899 equ 7373 ; FIX(0.899976223) |
| F_1_175 equ 9633 ; FIX(1.175875602) |
| F_1_501 equ 12299 ; FIX(1.501321110) |
| F_1_847 equ 15137 ; FIX(1.847759065) |
| F_1_961 equ 16069 ; FIX(1.961570560) |
| F_2_053 equ 16819 ; FIX(2.053119869) |
| F_2_562 equ 20995 ; FIX(2.562915447) |
| F_3_072 equ 25172 ; FIX(3.072711026) |
| %else |
| ; NASM cannot do compile-time arithmetic on floating-point constants. |
| %define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n)) |
| F_0_298 equ DESCALE( 320652955,30-CONST_BITS) ; FIX(0.298631336) |
| F_0_390 equ DESCALE( 418953276,30-CONST_BITS) ; FIX(0.390180644) |
| F_0_541 equ DESCALE( 581104887,30-CONST_BITS) ; FIX(0.541196100) |
| F_0_765 equ DESCALE( 821806413,30-CONST_BITS) ; FIX(0.765366865) |
| F_0_899 equ DESCALE( 966342111,30-CONST_BITS) ; FIX(0.899976223) |
| F_1_175 equ DESCALE(1262586813,30-CONST_BITS) ; FIX(1.175875602) |
| F_1_501 equ DESCALE(1612031267,30-CONST_BITS) ; FIX(1.501321110) |
| F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065) |
| F_1_961 equ DESCALE(2106220350,30-CONST_BITS) ; FIX(1.961570560) |
| F_2_053 equ DESCALE(2204520673,30-CONST_BITS) ; FIX(2.053119869) |
| F_2_562 equ DESCALE(2751909506,30-CONST_BITS) ; FIX(2.562915447) |
| F_3_072 equ DESCALE(3299298341,30-CONST_BITS) ; FIX(3.072711026) |
| %endif |
| |
| ; -------------------------------------------------------------------------- |
| SECTION SEG_CONST |
| |
| alignz 16 |
| global EXTN(jconst_fdct_islow_sse2) |
| |
| EXTN(jconst_fdct_islow_sse2): |
| |
| PW_F130_F054 times 4 dw (F_0_541+F_0_765), F_0_541 |
| PW_F054_MF130 times 4 dw F_0_541, (F_0_541-F_1_847) |
| PW_MF078_F117 times 4 dw (F_1_175-F_1_961), F_1_175 |
| PW_F117_F078 times 4 dw F_1_175, (F_1_175-F_0_390) |
| PW_MF060_MF089 times 4 dw (F_0_298-F_0_899),-F_0_899 |
| PW_MF089_F060 times 4 dw -F_0_899, (F_1_501-F_0_899) |
| PW_MF050_MF256 times 4 dw (F_2_053-F_2_562),-F_2_562 |
| PW_MF256_F050 times 4 dw -F_2_562, (F_3_072-F_2_562) |
| PD_DESCALE_P1 times 4 dd 1 << (DESCALE_P1-1) |
| PD_DESCALE_P2 times 4 dd 1 << (DESCALE_P2-1) |
| PW_DESCALE_P2X times 8 dw 1 << (PASS1_BITS-1) |
| |
| alignz 16 |
| |
| ; -------------------------------------------------------------------------- |
| SECTION SEG_TEXT |
| BITS 32 |
| ; |
| ; Perform the forward DCT on one block of samples. |
| ; |
| ; GLOBAL(void) |
| ; jsimd_fdct_islow_sse2 (DCTELEM *data) |
| ; |
| |
| %define data(b) (b)+8 ; DCTELEM *data |
| |
| %define original_ebp ebp+0 |
| %define wk(i) ebp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] |
| %define WK_NUM 6 |
| |
| align 16 |
| global EXTN(jsimd_fdct_islow_sse2) |
| |
| EXTN(jsimd_fdct_islow_sse2): |
| push ebp |
| mov eax,esp ; eax = original ebp |
| sub esp, byte 4 |
| and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits |
| mov [esp],eax |
| mov ebp,esp ; ebp = aligned ebp |
| lea esp, [wk(0)] |
| pushpic ebx |
| ; push ecx ; unused |
| ; push edx ; need not be preserved |
| ; push esi ; unused |
| ; push edi ; unused |
| |
| get_GOT ebx ; get GOT address |
| |
| ; ---- Pass 1: process rows. |
| |
| mov edx, POINTER [data(eax)] ; (DCTELEM *) |
| |
| movdqa xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_DCTELEM)] |
| movdqa xmm1, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_DCTELEM)] |
| movdqa xmm2, XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_DCTELEM)] |
| movdqa xmm3, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_DCTELEM)] |
| |
| ; xmm0=(00 01 02 03 04 05 06 07), xmm2=(20 21 22 23 24 25 26 27) |
| ; xmm1=(10 11 12 13 14 15 16 17), xmm3=(30 31 32 33 34 35 36 37) |
| |
| movdqa xmm4,xmm0 ; transpose coefficients(phase 1) |
| punpcklwd xmm0,xmm1 ; xmm0=(00 10 01 11 02 12 03 13) |
| punpckhwd xmm4,xmm1 ; xmm4=(04 14 05 15 06 16 07 17) |
| movdqa xmm5,xmm2 ; transpose coefficients(phase 1) |
| punpcklwd xmm2,xmm3 ; xmm2=(20 30 21 31 22 32 23 33) |
| punpckhwd xmm5,xmm3 ; xmm5=(24 34 25 35 26 36 27 37) |
| |
| movdqa xmm6, XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_DCTELEM)] |
| movdqa xmm7, XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_DCTELEM)] |
| movdqa xmm1, XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_DCTELEM)] |
| movdqa xmm3, XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_DCTELEM)] |
| |
| ; xmm6=( 4 12 20 28 36 44 52 60), xmm1=( 6 14 22 30 38 46 54 62) |
| ; xmm7=( 5 13 21 29 37 45 53 61), xmm3=( 7 15 23 31 39 47 55 63) |
| |
| movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=(20 30 21 31 22 32 23 33) |
| movdqa XMMWORD [wk(1)], xmm5 ; wk(1)=(24 34 25 35 26 36 27 37) |
| |
| movdqa xmm2,xmm6 ; transpose coefficients(phase 1) |
| punpcklwd xmm6,xmm7 ; xmm6=(40 50 41 51 42 52 43 53) |
| punpckhwd xmm2,xmm7 ; xmm2=(44 54 45 55 46 56 47 57) |
| movdqa xmm5,xmm1 ; transpose coefficients(phase 1) |
| punpcklwd xmm1,xmm3 ; xmm1=(60 70 61 71 62 72 63 73) |
| punpckhwd xmm5,xmm3 ; xmm5=(64 74 65 75 66 76 67 77) |
| |
| movdqa xmm7,xmm6 ; transpose coefficients(phase 2) |
| punpckldq xmm6,xmm1 ; xmm6=(40 50 60 70 41 51 61 71) |
| punpckhdq xmm7,xmm1 ; xmm7=(42 52 62 72 43 53 63 73) |
| movdqa xmm3,xmm2 ; transpose coefficients(phase 2) |
| punpckldq xmm2,xmm5 ; xmm2=(44 54 64 74 45 55 65 75) |
| punpckhdq xmm3,xmm5 ; xmm3=(46 56 66 76 47 57 67 77) |
| |
| movdqa xmm1, XMMWORD [wk(0)] ; xmm1=(20 30 21 31 22 32 23 33) |
| movdqa xmm5, XMMWORD [wk(1)] ; xmm5=(24 34 25 35 26 36 27 37) |
| movdqa XMMWORD [wk(2)], xmm7 ; wk(2)=(42 52 62 72 43 53 63 73) |
| movdqa XMMWORD [wk(3)], xmm2 ; wk(3)=(44 54 64 74 45 55 65 75) |
| |
| movdqa xmm7,xmm0 ; transpose coefficients(phase 2) |
| punpckldq xmm0,xmm1 ; xmm0=(00 10 20 30 01 11 21 31) |
| punpckhdq xmm7,xmm1 ; xmm7=(02 12 22 32 03 13 23 33) |
| movdqa xmm2,xmm4 ; transpose coefficients(phase 2) |
| punpckldq xmm4,xmm5 ; xmm4=(04 14 24 34 05 15 25 35) |
| punpckhdq xmm2,xmm5 ; xmm2=(06 16 26 36 07 17 27 37) |
| |
| movdqa xmm1,xmm0 ; transpose coefficients(phase 3) |
| punpcklqdq xmm0,xmm6 ; xmm0=(00 10 20 30 40 50 60 70)=data0 |
| punpckhqdq xmm1,xmm6 ; xmm1=(01 11 21 31 41 51 61 71)=data1 |
| movdqa xmm5,xmm2 ; transpose coefficients(phase 3) |
| punpcklqdq xmm2,xmm3 ; xmm2=(06 16 26 36 46 56 66 76)=data6 |
| punpckhqdq xmm5,xmm3 ; xmm5=(07 17 27 37 47 57 67 77)=data7 |
| |
| movdqa xmm6,xmm1 |
| movdqa xmm3,xmm0 |
| psubw xmm1,xmm2 ; xmm1=data1-data6=tmp6 |
| psubw xmm0,xmm5 ; xmm0=data0-data7=tmp7 |
| paddw xmm6,xmm2 ; xmm6=data1+data6=tmp1 |
| paddw xmm3,xmm5 ; xmm3=data0+data7=tmp0 |
| |
| movdqa xmm2, XMMWORD [wk(2)] ; xmm2=(42 52 62 72 43 53 63 73) |
| movdqa xmm5, XMMWORD [wk(3)] ; xmm5=(44 54 64 74 45 55 65 75) |
| movdqa XMMWORD [wk(0)], xmm1 ; wk(0)=tmp6 |
| movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=tmp7 |
| |
| movdqa xmm1,xmm7 ; transpose coefficients(phase 3) |
| punpcklqdq xmm7,xmm2 ; xmm7=(02 12 22 32 42 52 62 72)=data2 |
| punpckhqdq xmm1,xmm2 ; xmm1=(03 13 23 33 43 53 63 73)=data3 |
| movdqa xmm0,xmm4 ; transpose coefficients(phase 3) |
| punpcklqdq xmm4,xmm5 ; xmm4=(04 14 24 34 44 54 64 74)=data4 |
| punpckhqdq xmm0,xmm5 ; xmm0=(05 15 25 35 45 55 65 75)=data5 |
| |
| movdqa xmm2,xmm1 |
| movdqa xmm5,xmm7 |
| paddw xmm1,xmm4 ; xmm1=data3+data4=tmp3 |
| paddw xmm7,xmm0 ; xmm7=data2+data5=tmp2 |
| psubw xmm2,xmm4 ; xmm2=data3-data4=tmp4 |
| psubw xmm5,xmm0 ; xmm5=data2-data5=tmp5 |
| |
| ; -- Even part |
| |
| movdqa xmm4,xmm3 |
| movdqa xmm0,xmm6 |
| paddw xmm3,xmm1 ; xmm3=tmp10 |
| paddw xmm6,xmm7 ; xmm6=tmp11 |
| psubw xmm4,xmm1 ; xmm4=tmp13 |
| psubw xmm0,xmm7 ; xmm0=tmp12 |
| |
| movdqa xmm1,xmm3 |
| paddw xmm3,xmm6 ; xmm3=tmp10+tmp11 |
| psubw xmm1,xmm6 ; xmm1=tmp10-tmp11 |
| |
| psllw xmm3,PASS1_BITS ; xmm3=data0 |
| psllw xmm1,PASS1_BITS ; xmm1=data4 |
| |
| movdqa XMMWORD [wk(2)], xmm3 ; wk(2)=data0 |
| movdqa XMMWORD [wk(3)], xmm1 ; wk(3)=data4 |
| |
| ; (Original) |
| ; z1 = (tmp12 + tmp13) * 0.541196100; |
| ; data2 = z1 + tmp13 * 0.765366865; |
| ; data6 = z1 + tmp12 * -1.847759065; |
| ; |
| ; (This implementation) |
| ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100; |
| ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065); |
| |
| movdqa xmm7,xmm4 ; xmm4=tmp13 |
| movdqa xmm6,xmm4 |
| punpcklwd xmm7,xmm0 ; xmm0=tmp12 |
| punpckhwd xmm6,xmm0 |
| movdqa xmm4,xmm7 |
| movdqa xmm0,xmm6 |
| pmaddwd xmm7,[GOTOFF(ebx,PW_F130_F054)] ; xmm7=data2L |
| pmaddwd xmm6,[GOTOFF(ebx,PW_F130_F054)] ; xmm6=data2H |
| pmaddwd xmm4,[GOTOFF(ebx,PW_F054_MF130)] ; xmm4=data6L |
| pmaddwd xmm0,[GOTOFF(ebx,PW_F054_MF130)] ; xmm0=data6H |
| |
| paddd xmm7,[GOTOFF(ebx,PD_DESCALE_P1)] |
| paddd xmm6,[GOTOFF(ebx,PD_DESCALE_P1)] |
| psrad xmm7,DESCALE_P1 |
| psrad xmm6,DESCALE_P1 |
| paddd xmm4,[GOTOFF(ebx,PD_DESCALE_P1)] |
| paddd xmm0,[GOTOFF(ebx,PD_DESCALE_P1)] |
| psrad xmm4,DESCALE_P1 |
| psrad xmm0,DESCALE_P1 |
| |
| packssdw xmm7,xmm6 ; xmm7=data2 |
| packssdw xmm4,xmm0 ; xmm4=data6 |
| |
| movdqa XMMWORD [wk(4)], xmm7 ; wk(4)=data2 |
| movdqa XMMWORD [wk(5)], xmm4 ; wk(5)=data6 |
| |
| ; -- Odd part |
| |
| movdqa xmm3, XMMWORD [wk(0)] ; xmm3=tmp6 |
| movdqa xmm1, XMMWORD [wk(1)] ; xmm1=tmp7 |
| |
| movdqa xmm6,xmm2 ; xmm2=tmp4 |
| movdqa xmm0,xmm5 ; xmm5=tmp5 |
| paddw xmm6,xmm3 ; xmm6=z3 |
| paddw xmm0,xmm1 ; xmm0=z4 |
| |
| ; (Original) |
| ; z5 = (z3 + z4) * 1.175875602; |
| ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; |
| ; z3 += z5; z4 += z5; |
| ; |
| ; (This implementation) |
| ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; |
| ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); |
| |
| movdqa xmm7,xmm6 |
| movdqa xmm4,xmm6 |
| punpcklwd xmm7,xmm0 |
| punpckhwd xmm4,xmm0 |
| movdqa xmm6,xmm7 |
| movdqa xmm0,xmm4 |
| pmaddwd xmm7,[GOTOFF(ebx,PW_MF078_F117)] ; xmm7=z3L |
| pmaddwd xmm4,[GOTOFF(ebx,PW_MF078_F117)] ; xmm4=z3H |
| pmaddwd xmm6,[GOTOFF(ebx,PW_F117_F078)] ; xmm6=z4L |
| pmaddwd xmm0,[GOTOFF(ebx,PW_F117_F078)] ; xmm0=z4H |
| |
| movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=z3L |
| movdqa XMMWORD [wk(1)], xmm4 ; wk(1)=z3H |
| |
| ; (Original) |
| ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6; |
| ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869; |
| ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110; |
| ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; |
| ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4; |
| ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4; |
| ; |
| ; (This implementation) |
| ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223; |
| ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447; |
| ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447); |
| ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223); |
| ; data7 = tmp4 + z3; data5 = tmp5 + z4; |
| ; data3 = tmp6 + z3; data1 = tmp7 + z4; |
| |
| movdqa xmm7,xmm2 |
| movdqa xmm4,xmm2 |
| punpcklwd xmm7,xmm1 |
| punpckhwd xmm4,xmm1 |
| movdqa xmm2,xmm7 |
| movdqa xmm1,xmm4 |
| pmaddwd xmm7,[GOTOFF(ebx,PW_MF060_MF089)] ; xmm7=tmp4L |
| pmaddwd xmm4,[GOTOFF(ebx,PW_MF060_MF089)] ; xmm4=tmp4H |
| pmaddwd xmm2,[GOTOFF(ebx,PW_MF089_F060)] ; xmm2=tmp7L |
| pmaddwd xmm1,[GOTOFF(ebx,PW_MF089_F060)] ; xmm1=tmp7H |
| |
| paddd xmm7, XMMWORD [wk(0)] ; xmm7=data7L |
| paddd xmm4, XMMWORD [wk(1)] ; xmm4=data7H |
| paddd xmm2,xmm6 ; xmm2=data1L |
| paddd xmm1,xmm0 ; xmm1=data1H |
| |
| paddd xmm7,[GOTOFF(ebx,PD_DESCALE_P1)] |
| paddd xmm4,[GOTOFF(ebx,PD_DESCALE_P1)] |
| psrad xmm7,DESCALE_P1 |
| psrad xmm4,DESCALE_P1 |
| paddd xmm2,[GOTOFF(ebx,PD_DESCALE_P1)] |
| paddd xmm1,[GOTOFF(ebx,PD_DESCALE_P1)] |
| psrad xmm2,DESCALE_P1 |
| psrad xmm1,DESCALE_P1 |
| |
| packssdw xmm7,xmm4 ; xmm7=data7 |
| packssdw xmm2,xmm1 ; xmm2=data1 |
| |
| movdqa xmm4,xmm5 |
| movdqa xmm1,xmm5 |
| punpcklwd xmm4,xmm3 |
| punpckhwd xmm1,xmm3 |
| movdqa xmm5,xmm4 |
| movdqa xmm3,xmm1 |
| pmaddwd xmm4,[GOTOFF(ebx,PW_MF050_MF256)] ; xmm4=tmp5L |
| pmaddwd xmm1,[GOTOFF(ebx,PW_MF050_MF256)] ; xmm1=tmp5H |
| pmaddwd xmm5,[GOTOFF(ebx,PW_MF256_F050)] ; xmm5=tmp6L |
| pmaddwd xmm3,[GOTOFF(ebx,PW_MF256_F050)] ; xmm3=tmp6H |
| |
| paddd xmm4,xmm6 ; xmm4=data5L |
| paddd xmm1,xmm0 ; xmm1=data5H |
| paddd xmm5, XMMWORD [wk(0)] ; xmm5=data3L |
| paddd xmm3, XMMWORD [wk(1)] ; xmm3=data3H |
| |
| paddd xmm4,[GOTOFF(ebx,PD_DESCALE_P1)] |
| paddd xmm1,[GOTOFF(ebx,PD_DESCALE_P1)] |
| psrad xmm4,DESCALE_P1 |
| psrad xmm1,DESCALE_P1 |
| paddd xmm5,[GOTOFF(ebx,PD_DESCALE_P1)] |
| paddd xmm3,[GOTOFF(ebx,PD_DESCALE_P1)] |
| psrad xmm5,DESCALE_P1 |
| psrad xmm3,DESCALE_P1 |
| |
| packssdw xmm4,xmm1 ; xmm4=data5 |
| packssdw xmm5,xmm3 ; xmm5=data3 |
| |
| ; ---- Pass 2: process columns. |
| |
| ; mov edx, POINTER [data(eax)] ; (DCTELEM *) |
| |
| movdqa xmm6, XMMWORD [wk(2)] ; xmm6=col0 |
| movdqa xmm0, XMMWORD [wk(4)] ; xmm0=col2 |
| |
| ; xmm6=(00 10 20 30 40 50 60 70), xmm0=(02 12 22 32 42 52 62 72) |
| ; xmm2=(01 11 21 31 41 51 61 71), xmm5=(03 13 23 33 43 53 63 73) |
| |
| movdqa xmm1,xmm6 ; transpose coefficients(phase 1) |
| punpcklwd xmm6,xmm2 ; xmm6=(00 01 10 11 20 21 30 31) |
| punpckhwd xmm1,xmm2 ; xmm1=(40 41 50 51 60 61 70 71) |
| movdqa xmm3,xmm0 ; transpose coefficients(phase 1) |
| punpcklwd xmm0,xmm5 ; xmm0=(02 03 12 13 22 23 32 33) |
| punpckhwd xmm3,xmm5 ; xmm3=(42 43 52 53 62 63 72 73) |
| |
| movdqa xmm2, XMMWORD [wk(3)] ; xmm2=col4 |
| movdqa xmm5, XMMWORD [wk(5)] ; xmm5=col6 |
| |
| ; xmm2=(04 14 24 34 44 54 64 74), xmm5=(06 16 26 36 46 56 66 76) |
| ; xmm4=(05 15 25 35 45 55 65 75), xmm7=(07 17 27 37 47 57 67 77) |
| |
| movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=(02 03 12 13 22 23 32 33) |
| movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=(42 43 52 53 62 63 72 73) |
| |
| movdqa xmm0,xmm2 ; transpose coefficients(phase 1) |
| punpcklwd xmm2,xmm4 ; xmm2=(04 05 14 15 24 25 34 35) |
| punpckhwd xmm0,xmm4 ; xmm0=(44 45 54 55 64 65 74 75) |
| movdqa xmm3,xmm5 ; transpose coefficients(phase 1) |
| punpcklwd xmm5,xmm7 ; xmm5=(06 07 16 17 26 27 36 37) |
| punpckhwd xmm3,xmm7 ; xmm3=(46 47 56 57 66 67 76 77) |
| |
| movdqa xmm4,xmm2 ; transpose coefficients(phase 2) |
| punpckldq xmm2,xmm5 ; xmm2=(04 05 06 07 14 15 16 17) |
| punpckhdq xmm4,xmm5 ; xmm4=(24 25 26 27 34 35 36 37) |
| movdqa xmm7,xmm0 ; transpose coefficients(phase 2) |
| punpckldq xmm0,xmm3 ; xmm0=(44 45 46 47 54 55 56 57) |
| punpckhdq xmm7,xmm3 ; xmm7=(64 65 66 67 74 75 76 77) |
| |
| movdqa xmm5, XMMWORD [wk(0)] ; xmm5=(02 03 12 13 22 23 32 33) |
| movdqa xmm3, XMMWORD [wk(1)] ; xmm3=(42 43 52 53 62 63 72 73) |
| movdqa XMMWORD [wk(2)], xmm4 ; wk(2)=(24 25 26 27 34 35 36 37) |
| movdqa XMMWORD [wk(3)], xmm0 ; wk(3)=(44 45 46 47 54 55 56 57) |
| |
| movdqa xmm4,xmm6 ; transpose coefficients(phase 2) |
| punpckldq xmm6,xmm5 ; xmm6=(00 01 02 03 10 11 12 13) |
| punpckhdq xmm4,xmm5 ; xmm4=(20 21 22 23 30 31 32 33) |
| movdqa xmm0,xmm1 ; transpose coefficients(phase 2) |
| punpckldq xmm1,xmm3 ; xmm1=(40 41 42 43 50 51 52 53) |
| punpckhdq xmm0,xmm3 ; xmm0=(60 61 62 63 70 71 72 73) |
| |
| movdqa xmm5,xmm6 ; transpose coefficients(phase 3) |
| punpcklqdq xmm6,xmm2 ; xmm6=(00 01 02 03 04 05 06 07)=data0 |
| punpckhqdq xmm5,xmm2 ; xmm5=(10 11 12 13 14 15 16 17)=data1 |
| movdqa xmm3,xmm0 ; transpose coefficients(phase 3) |
| punpcklqdq xmm0,xmm7 ; xmm0=(60 61 62 63 64 65 66 67)=data6 |
| punpckhqdq xmm3,xmm7 ; xmm3=(70 71 72 73 74 75 76 77)=data7 |
| |
| movdqa xmm2,xmm5 |
| movdqa xmm7,xmm6 |
| psubw xmm5,xmm0 ; xmm5=data1-data6=tmp6 |
| psubw xmm6,xmm3 ; xmm6=data0-data7=tmp7 |
| paddw xmm2,xmm0 ; xmm2=data1+data6=tmp1 |
| paddw xmm7,xmm3 ; xmm7=data0+data7=tmp0 |
| |
| movdqa xmm0, XMMWORD [wk(2)] ; xmm0=(24 25 26 27 34 35 36 37) |
| movdqa xmm3, XMMWORD [wk(3)] ; xmm3=(44 45 46 47 54 55 56 57) |
| movdqa XMMWORD [wk(0)], xmm5 ; wk(0)=tmp6 |
| movdqa XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7 |
| |
| movdqa xmm5,xmm4 ; transpose coefficients(phase 3) |
| punpcklqdq xmm4,xmm0 ; xmm4=(20 21 22 23 24 25 26 27)=data2 |
| punpckhqdq xmm5,xmm0 ; xmm5=(30 31 32 33 34 35 36 37)=data3 |
| movdqa xmm6,xmm1 ; transpose coefficients(phase 3) |
| punpcklqdq xmm1,xmm3 ; xmm1=(40 41 42 43 44 45 46 47)=data4 |
| punpckhqdq xmm6,xmm3 ; xmm6=(50 51 52 53 54 55 56 57)=data5 |
| |
| movdqa xmm0,xmm5 |
| movdqa xmm3,xmm4 |
| paddw xmm5,xmm1 ; xmm5=data3+data4=tmp3 |
| paddw xmm4,xmm6 ; xmm4=data2+data5=tmp2 |
| psubw xmm0,xmm1 ; xmm0=data3-data4=tmp4 |
| psubw xmm3,xmm6 ; xmm3=data2-data5=tmp5 |
| |
| ; -- Even part |
| |
| movdqa xmm1,xmm7 |
| movdqa xmm6,xmm2 |
| paddw xmm7,xmm5 ; xmm7=tmp10 |
| paddw xmm2,xmm4 ; xmm2=tmp11 |
| psubw xmm1,xmm5 ; xmm1=tmp13 |
| psubw xmm6,xmm4 ; xmm6=tmp12 |
| |
| movdqa xmm5,xmm7 |
| paddw xmm7,xmm2 ; xmm7=tmp10+tmp11 |
| psubw xmm5,xmm2 ; xmm5=tmp10-tmp11 |
| |
| paddw xmm7,[GOTOFF(ebx,PW_DESCALE_P2X)] |
| paddw xmm5,[GOTOFF(ebx,PW_DESCALE_P2X)] |
| psraw xmm7,PASS1_BITS ; xmm7=data0 |
| psraw xmm5,PASS1_BITS ; xmm5=data4 |
| |
| movdqa XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_DCTELEM)], xmm7 |
| movdqa XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_DCTELEM)], xmm5 |
| |
| ; (Original) |
| ; z1 = (tmp12 + tmp13) * 0.541196100; |
| ; data2 = z1 + tmp13 * 0.765366865; |
| ; data6 = z1 + tmp12 * -1.847759065; |
| ; |
| ; (This implementation) |
| ; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100; |
| ; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065); |
| |
| movdqa xmm4,xmm1 ; xmm1=tmp13 |
| movdqa xmm2,xmm1 |
| punpcklwd xmm4,xmm6 ; xmm6=tmp12 |
| punpckhwd xmm2,xmm6 |
| movdqa xmm1,xmm4 |
| movdqa xmm6,xmm2 |
| pmaddwd xmm4,[GOTOFF(ebx,PW_F130_F054)] ; xmm4=data2L |
| pmaddwd xmm2,[GOTOFF(ebx,PW_F130_F054)] ; xmm2=data2H |
| pmaddwd xmm1,[GOTOFF(ebx,PW_F054_MF130)] ; xmm1=data6L |
| pmaddwd xmm6,[GOTOFF(ebx,PW_F054_MF130)] ; xmm6=data6H |
| |
| paddd xmm4,[GOTOFF(ebx,PD_DESCALE_P2)] |
| paddd xmm2,[GOTOFF(ebx,PD_DESCALE_P2)] |
| psrad xmm4,DESCALE_P2 |
| psrad xmm2,DESCALE_P2 |
| paddd xmm1,[GOTOFF(ebx,PD_DESCALE_P2)] |
| paddd xmm6,[GOTOFF(ebx,PD_DESCALE_P2)] |
| psrad xmm1,DESCALE_P2 |
| psrad xmm6,DESCALE_P2 |
| |
| packssdw xmm4,xmm2 ; xmm4=data2 |
| packssdw xmm1,xmm6 ; xmm1=data6 |
| |
| movdqa XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_DCTELEM)], xmm4 |
| movdqa XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_DCTELEM)], xmm1 |
| |
| ; -- Odd part |
| |
| movdqa xmm7, XMMWORD [wk(0)] ; xmm7=tmp6 |
| movdqa xmm5, XMMWORD [wk(1)] ; xmm5=tmp7 |
| |
| movdqa xmm2,xmm0 ; xmm0=tmp4 |
| movdqa xmm6,xmm3 ; xmm3=tmp5 |
| paddw xmm2,xmm7 ; xmm2=z3 |
| paddw xmm6,xmm5 ; xmm6=z4 |
| |
| ; (Original) |
| ; z5 = (z3 + z4) * 1.175875602; |
| ; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644; |
| ; z3 += z5; z4 += z5; |
| ; |
| ; (This implementation) |
| ; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602; |
| ; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644); |
| |
| movdqa xmm4,xmm2 |
| movdqa xmm1,xmm2 |
| punpcklwd xmm4,xmm6 |
| punpckhwd xmm1,xmm6 |
| movdqa xmm2,xmm4 |
| movdqa xmm6,xmm1 |
| pmaddwd xmm4,[GOTOFF(ebx,PW_MF078_F117)] ; xmm4=z3L |
| pmaddwd xmm1,[GOTOFF(ebx,PW_MF078_F117)] ; xmm1=z3H |
| pmaddwd xmm2,[GOTOFF(ebx,PW_F117_F078)] ; xmm2=z4L |
| pmaddwd xmm6,[GOTOFF(ebx,PW_F117_F078)] ; xmm6=z4H |
| |
| movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=z3L |
| movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=z3H |
| |
| ; (Original) |
| ; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6; |
| ; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869; |
| ; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110; |
| ; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447; |
| ; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4; |
| ; data3 = tmp6 + z2 + z3; data1 = tmp7 + z1 + z4; |
| ; |
| ; (This implementation) |
| ; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223; |
| ; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447; |
| ; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447); |
| ; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223); |
| ; data7 = tmp4 + z3; data5 = tmp5 + z4; |
| ; data3 = tmp6 + z3; data1 = tmp7 + z4; |
| |
| movdqa xmm4,xmm0 |
| movdqa xmm1,xmm0 |
| punpcklwd xmm4,xmm5 |
| punpckhwd xmm1,xmm5 |
| movdqa xmm0,xmm4 |
| movdqa xmm5,xmm1 |
| pmaddwd xmm4,[GOTOFF(ebx,PW_MF060_MF089)] ; xmm4=tmp4L |
| pmaddwd xmm1,[GOTOFF(ebx,PW_MF060_MF089)] ; xmm1=tmp4H |
| pmaddwd xmm0,[GOTOFF(ebx,PW_MF089_F060)] ; xmm0=tmp7L |
| pmaddwd xmm5,[GOTOFF(ebx,PW_MF089_F060)] ; xmm5=tmp7H |
| |
| paddd xmm4, XMMWORD [wk(0)] ; xmm4=data7L |
| paddd xmm1, XMMWORD [wk(1)] ; xmm1=data7H |
| paddd xmm0,xmm2 ; xmm0=data1L |
| paddd xmm5,xmm6 ; xmm5=data1H |
| |
| paddd xmm4,[GOTOFF(ebx,PD_DESCALE_P2)] |
| paddd xmm1,[GOTOFF(ebx,PD_DESCALE_P2)] |
| psrad xmm4,DESCALE_P2 |
| psrad xmm1,DESCALE_P2 |
| paddd xmm0,[GOTOFF(ebx,PD_DESCALE_P2)] |
| paddd xmm5,[GOTOFF(ebx,PD_DESCALE_P2)] |
| psrad xmm0,DESCALE_P2 |
| psrad xmm5,DESCALE_P2 |
| |
| packssdw xmm4,xmm1 ; xmm4=data7 |
| packssdw xmm0,xmm5 ; xmm0=data1 |
| |
| movdqa XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_DCTELEM)], xmm4 |
| movdqa XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_DCTELEM)], xmm0 |
| |
| movdqa xmm1,xmm3 |
| movdqa xmm5,xmm3 |
| punpcklwd xmm1,xmm7 |
| punpckhwd xmm5,xmm7 |
| movdqa xmm3,xmm1 |
| movdqa xmm7,xmm5 |
| pmaddwd xmm1,[GOTOFF(ebx,PW_MF050_MF256)] ; xmm1=tmp5L |
| pmaddwd xmm5,[GOTOFF(ebx,PW_MF050_MF256)] ; xmm5=tmp5H |
| pmaddwd xmm3,[GOTOFF(ebx,PW_MF256_F050)] ; xmm3=tmp6L |
| pmaddwd xmm7,[GOTOFF(ebx,PW_MF256_F050)] ; xmm7=tmp6H |
| |
| paddd xmm1,xmm2 ; xmm1=data5L |
| paddd xmm5,xmm6 ; xmm5=data5H |
| paddd xmm3, XMMWORD [wk(0)] ; xmm3=data3L |
| paddd xmm7, XMMWORD [wk(1)] ; xmm7=data3H |
| |
| paddd xmm1,[GOTOFF(ebx,PD_DESCALE_P2)] |
| paddd xmm5,[GOTOFF(ebx,PD_DESCALE_P2)] |
| psrad xmm1,DESCALE_P2 |
| psrad xmm5,DESCALE_P2 |
| paddd xmm3,[GOTOFF(ebx,PD_DESCALE_P2)] |
| paddd xmm7,[GOTOFF(ebx,PD_DESCALE_P2)] |
| psrad xmm3,DESCALE_P2 |
| psrad xmm7,DESCALE_P2 |
| |
| packssdw xmm1,xmm5 ; xmm1=data5 |
| packssdw xmm3,xmm7 ; xmm3=data3 |
| |
| movdqa XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_DCTELEM)], xmm1 |
| movdqa XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_DCTELEM)], xmm3 |
| |
| ; pop edi ; unused |
| ; pop esi ; unused |
| ; pop edx ; need not be preserved |
| ; pop ecx ; unused |
| poppic ebx |
| mov esp,ebp ; esp <- aligned ebp |
| pop esp ; esp <- original ebp |
| pop ebp |
| ret |
| |
| ; For some reason, the OS X linker does not honor the request to align the |
| ; segment unless we do this. |
| align 16 |
