| ; |
| ; Accurate integer FDCT (32-bit SSE2) |
| ; |
| ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB |
| ; Copyright (C) 2016, 2020, 2024-2025, D. R. Commander. |
| ; |
| ; 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) or Yasm. |
| ; |
| ; This file contains a slower but more accurate integer implementation of the |
| ; forward DCT (Discrete Cosine Transform). The following code is based |
| ; directly on the IJG's original jfdctint.c; see jfdctint.c for more details. |
| |
| %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 32 |
| GLOBAL_DATA(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 32 |
| |
| ; -------------------------------------------------------------------------- |
| 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 32 |
| GLOBAL_FUNCTION(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 32 |
