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Unified Diff: simd/jfmmxint.asm

Issue 1953443002: Update to libjpeg_turbo 1.4.90 (Closed) Base URL: https://chromium.googlesource.com/chromium/deps/libjpeg_turbo.git@master
Patch Set: Created 4 years, 7 months ago
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Index: simd/jfmmxint.asm
diff --git a/simd/jfmmxint.asm b/simd/jfmmxint.asm
deleted file mode 100644
index e5593f80fd2aa7ce246c7e435562fade1665a3ec..0000000000000000000000000000000000000000
--- a/simd/jfmmxint.asm
+++ /dev/null
@@ -1,622 +0,0 @@
-;
-; jfmmxint.asm - accurate integer FDCT (MMX)
-;
-; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
-;
-; Based on
-; 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_mmx) PRIVATE
-
-EXTN(jconst_fdct_islow_mmx):
-
-PW_F130_F054 times 2 dw (F_0_541+F_0_765), F_0_541
-PW_F054_MF130 times 2 dw F_0_541, (F_0_541-F_1_847)
-PW_MF078_F117 times 2 dw (F_1_175-F_1_961), F_1_175
-PW_F117_F078 times 2 dw F_1_175, (F_1_175-F_0_390)
-PW_MF060_MF089 times 2 dw (F_0_298-F_0_899),-F_0_899
-PW_MF089_F060 times 2 dw -F_0_899, (F_1_501-F_0_899)
-PW_MF050_MF256 times 2 dw (F_2_053-F_2_562),-F_2_562
-PW_MF256_F050 times 2 dw -F_2_562, (F_3_072-F_2_562)
-PD_DESCALE_P1 times 2 dd 1 << (DESCALE_P1-1)
-PD_DESCALE_P2 times 2 dd 1 << (DESCALE_P2-1)
-PW_DESCALE_P2X times 4 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_mmx (DCTELEM * data)
-;
-
-%define data(b) (b)+8 ; DCTELEM * data
-
-%define original_ebp ebp+0
-%define wk(i) ebp-(WK_NUM-(i))*SIZEOF_MMWORD ; mmword wk[WK_NUM]
-%define WK_NUM 2
-
- align 16
- global EXTN(jsimd_fdct_islow_mmx) PRIVATE
-
-EXTN(jsimd_fdct_islow_mmx):
- push ebp
- mov eax,esp ; eax = original ebp
- sub esp, byte 4
- and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits
- mov [esp],eax
- mov ebp,esp ; ebp = aligned ebp
- lea esp, [wk(0)]
- pushpic ebx
-; push ecx ; need not be preserved
-; 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 *)
- mov ecx, DCTSIZE/4
- alignx 16,7
-.rowloop:
-
- movq mm0, MMWORD [MMBLOCK(2,0,edx,SIZEOF_DCTELEM)]
- movq mm1, MMWORD [MMBLOCK(3,0,edx,SIZEOF_DCTELEM)]
- movq mm2, MMWORD [MMBLOCK(2,1,edx,SIZEOF_DCTELEM)]
- movq mm3, MMWORD [MMBLOCK(3,1,edx,SIZEOF_DCTELEM)]
-
- ; mm0=(20 21 22 23), mm2=(24 25 26 27)
- ; mm1=(30 31 32 33), mm3=(34 35 36 37)
-
- movq mm4,mm0 ; transpose coefficients(phase 1)
- punpcklwd mm0,mm1 ; mm0=(20 30 21 31)
- punpckhwd mm4,mm1 ; mm4=(22 32 23 33)
- movq mm5,mm2 ; transpose coefficients(phase 1)
- punpcklwd mm2,mm3 ; mm2=(24 34 25 35)
- punpckhwd mm5,mm3 ; mm5=(26 36 27 37)
-
- movq mm6, MMWORD [MMBLOCK(0,0,edx,SIZEOF_DCTELEM)]
- movq mm7, MMWORD [MMBLOCK(1,0,edx,SIZEOF_DCTELEM)]
- movq mm1, MMWORD [MMBLOCK(0,1,edx,SIZEOF_DCTELEM)]
- movq mm3, MMWORD [MMBLOCK(1,1,edx,SIZEOF_DCTELEM)]
-
- ; mm6=(00 01 02 03), mm1=(04 05 06 07)
- ; mm7=(10 11 12 13), mm3=(14 15 16 17)
-
- movq MMWORD [wk(0)], mm4 ; wk(0)=(22 32 23 33)
- movq MMWORD [wk(1)], mm2 ; wk(1)=(24 34 25 35)
-
- movq mm4,mm6 ; transpose coefficients(phase 1)
- punpcklwd mm6,mm7 ; mm6=(00 10 01 11)
- punpckhwd mm4,mm7 ; mm4=(02 12 03 13)
- movq mm2,mm1 ; transpose coefficients(phase 1)
- punpcklwd mm1,mm3 ; mm1=(04 14 05 15)
- punpckhwd mm2,mm3 ; mm2=(06 16 07 17)
-
- movq mm7,mm6 ; transpose coefficients(phase 2)
- punpckldq mm6,mm0 ; mm6=(00 10 20 30)=data0
- punpckhdq mm7,mm0 ; mm7=(01 11 21 31)=data1
- movq mm3,mm2 ; transpose coefficients(phase 2)
- punpckldq mm2,mm5 ; mm2=(06 16 26 36)=data6
- punpckhdq mm3,mm5 ; mm3=(07 17 27 37)=data7
-
- movq mm0,mm7
- movq mm5,mm6
- psubw mm7,mm2 ; mm7=data1-data6=tmp6
- psubw mm6,mm3 ; mm6=data0-data7=tmp7
- paddw mm0,mm2 ; mm0=data1+data6=tmp1
- paddw mm5,mm3 ; mm5=data0+data7=tmp0
-
- movq mm2, MMWORD [wk(0)] ; mm2=(22 32 23 33)
- movq mm3, MMWORD [wk(1)] ; mm3=(24 34 25 35)
- movq MMWORD [wk(0)], mm7 ; wk(0)=tmp6
- movq MMWORD [wk(1)], mm6 ; wk(1)=tmp7
-
- movq mm7,mm4 ; transpose coefficients(phase 2)
- punpckldq mm4,mm2 ; mm4=(02 12 22 32)=data2
- punpckhdq mm7,mm2 ; mm7=(03 13 23 33)=data3
- movq mm6,mm1 ; transpose coefficients(phase 2)
- punpckldq mm1,mm3 ; mm1=(04 14 24 34)=data4
- punpckhdq mm6,mm3 ; mm6=(05 15 25 35)=data5
-
- movq mm2,mm7
- movq mm3,mm4
- paddw mm7,mm1 ; mm7=data3+data4=tmp3
- paddw mm4,mm6 ; mm4=data2+data5=tmp2
- psubw mm2,mm1 ; mm2=data3-data4=tmp4
- psubw mm3,mm6 ; mm3=data2-data5=tmp5
-
- ; -- Even part
-
- movq mm1,mm5
- movq mm6,mm0
- paddw mm5,mm7 ; mm5=tmp10
- paddw mm0,mm4 ; mm0=tmp11
- psubw mm1,mm7 ; mm1=tmp13
- psubw mm6,mm4 ; mm6=tmp12
-
- movq mm7,mm5
- paddw mm5,mm0 ; mm5=tmp10+tmp11
- psubw mm7,mm0 ; mm7=tmp10-tmp11
-
- psllw mm5,PASS1_BITS ; mm5=data0
- psllw mm7,PASS1_BITS ; mm7=data4
-
- movq MMWORD [MMBLOCK(0,0,edx,SIZEOF_DCTELEM)], mm5
- movq MMWORD [MMBLOCK(0,1,edx,SIZEOF_DCTELEM)], mm7
-
- ; (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);
-
- movq mm4,mm1 ; mm1=tmp13
- movq mm0,mm1
- punpcklwd mm4,mm6 ; mm6=tmp12
- punpckhwd mm0,mm6
- movq mm1,mm4
- movq mm6,mm0
- pmaddwd mm4,[GOTOFF(ebx,PW_F130_F054)] ; mm4=data2L
- pmaddwd mm0,[GOTOFF(ebx,PW_F130_F054)] ; mm0=data2H
- pmaddwd mm1,[GOTOFF(ebx,PW_F054_MF130)] ; mm1=data6L
- pmaddwd mm6,[GOTOFF(ebx,PW_F054_MF130)] ; mm6=data6H
-
- paddd mm4,[GOTOFF(ebx,PD_DESCALE_P1)]
- paddd mm0,[GOTOFF(ebx,PD_DESCALE_P1)]
- psrad mm4,DESCALE_P1
- psrad mm0,DESCALE_P1
- paddd mm1,[GOTOFF(ebx,PD_DESCALE_P1)]
- paddd mm6,[GOTOFF(ebx,PD_DESCALE_P1)]
- psrad mm1,DESCALE_P1
- psrad mm6,DESCALE_P1
-
- packssdw mm4,mm0 ; mm4=data2
- packssdw mm1,mm6 ; mm1=data6
-
- movq MMWORD [MMBLOCK(2,0,edx,SIZEOF_DCTELEM)], mm4
- movq MMWORD [MMBLOCK(2,1,edx,SIZEOF_DCTELEM)], mm1
-
- ; -- Odd part
-
- movq mm5, MMWORD [wk(0)] ; mm5=tmp6
- movq mm7, MMWORD [wk(1)] ; mm7=tmp7
-
- movq mm0,mm2 ; mm2=tmp4
- movq mm6,mm3 ; mm3=tmp5
- paddw mm0,mm5 ; mm0=z3
- paddw mm6,mm7 ; mm6=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);
-
- movq mm4,mm0
- movq mm1,mm0
- punpcklwd mm4,mm6
- punpckhwd mm1,mm6
- movq mm0,mm4
- movq mm6,mm1
- pmaddwd mm4,[GOTOFF(ebx,PW_MF078_F117)] ; mm4=z3L
- pmaddwd mm1,[GOTOFF(ebx,PW_MF078_F117)] ; mm1=z3H
- pmaddwd mm0,[GOTOFF(ebx,PW_F117_F078)] ; mm0=z4L
- pmaddwd mm6,[GOTOFF(ebx,PW_F117_F078)] ; mm6=z4H
-
- movq MMWORD [wk(0)], mm4 ; wk(0)=z3L
- movq MMWORD [wk(1)], mm1 ; 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;
-
- movq mm4,mm2
- movq mm1,mm2
- punpcklwd mm4,mm7
- punpckhwd mm1,mm7
- movq mm2,mm4
- movq mm7,mm1
- pmaddwd mm4,[GOTOFF(ebx,PW_MF060_MF089)] ; mm4=tmp4L
- pmaddwd mm1,[GOTOFF(ebx,PW_MF060_MF089)] ; mm1=tmp4H
- pmaddwd mm2,[GOTOFF(ebx,PW_MF089_F060)] ; mm2=tmp7L
- pmaddwd mm7,[GOTOFF(ebx,PW_MF089_F060)] ; mm7=tmp7H
-
- paddd mm4, MMWORD [wk(0)] ; mm4=data7L
- paddd mm1, MMWORD [wk(1)] ; mm1=data7H
- paddd mm2,mm0 ; mm2=data1L
- paddd mm7,mm6 ; mm7=data1H
-
- paddd mm4,[GOTOFF(ebx,PD_DESCALE_P1)]
- paddd mm1,[GOTOFF(ebx,PD_DESCALE_P1)]
- psrad mm4,DESCALE_P1
- psrad mm1,DESCALE_P1
- paddd mm2,[GOTOFF(ebx,PD_DESCALE_P1)]
- paddd mm7,[GOTOFF(ebx,PD_DESCALE_P1)]
- psrad mm2,DESCALE_P1
- psrad mm7,DESCALE_P1
-
- packssdw mm4,mm1 ; mm4=data7
- packssdw mm2,mm7 ; mm2=data1
-
- movq MMWORD [MMBLOCK(3,1,edx,SIZEOF_DCTELEM)], mm4
- movq MMWORD [MMBLOCK(1,0,edx,SIZEOF_DCTELEM)], mm2
-
- movq mm1,mm3
- movq mm7,mm3
- punpcklwd mm1,mm5
- punpckhwd mm7,mm5
- movq mm3,mm1
- movq mm5,mm7
- pmaddwd mm1,[GOTOFF(ebx,PW_MF050_MF256)] ; mm1=tmp5L
- pmaddwd mm7,[GOTOFF(ebx,PW_MF050_MF256)] ; mm7=tmp5H
- pmaddwd mm3,[GOTOFF(ebx,PW_MF256_F050)] ; mm3=tmp6L
- pmaddwd mm5,[GOTOFF(ebx,PW_MF256_F050)] ; mm5=tmp6H
-
- paddd mm1,mm0 ; mm1=data5L
- paddd mm7,mm6 ; mm7=data5H
- paddd mm3, MMWORD [wk(0)] ; mm3=data3L
- paddd mm5, MMWORD [wk(1)] ; mm5=data3H
-
- paddd mm1,[GOTOFF(ebx,PD_DESCALE_P1)]
- paddd mm7,[GOTOFF(ebx,PD_DESCALE_P1)]
- psrad mm1,DESCALE_P1
- psrad mm7,DESCALE_P1
- paddd mm3,[GOTOFF(ebx,PD_DESCALE_P1)]
- paddd mm5,[GOTOFF(ebx,PD_DESCALE_P1)]
- psrad mm3,DESCALE_P1
- psrad mm5,DESCALE_P1
-
- packssdw mm1,mm7 ; mm1=data5
- packssdw mm3,mm5 ; mm3=data3
-
- movq MMWORD [MMBLOCK(1,1,edx,SIZEOF_DCTELEM)], mm1
- movq MMWORD [MMBLOCK(3,0,edx,SIZEOF_DCTELEM)], mm3
-
- add edx, byte 4*DCTSIZE*SIZEOF_DCTELEM
- dec ecx
- jnz near .rowloop
-
- ; ---- Pass 2: process columns.
-
- mov edx, POINTER [data(eax)] ; (DCTELEM *)
- mov ecx, DCTSIZE/4
- alignx 16,7
-.columnloop:
-
- movq mm0, MMWORD [MMBLOCK(2,0,edx,SIZEOF_DCTELEM)]
- movq mm1, MMWORD [MMBLOCK(3,0,edx,SIZEOF_DCTELEM)]
- movq mm2, MMWORD [MMBLOCK(6,0,edx,SIZEOF_DCTELEM)]
- movq mm3, MMWORD [MMBLOCK(7,0,edx,SIZEOF_DCTELEM)]
-
- ; mm0=(02 12 22 32), mm2=(42 52 62 72)
- ; mm1=(03 13 23 33), mm3=(43 53 63 73)
-
- movq mm4,mm0 ; transpose coefficients(phase 1)
- punpcklwd mm0,mm1 ; mm0=(02 03 12 13)
- punpckhwd mm4,mm1 ; mm4=(22 23 32 33)
- movq mm5,mm2 ; transpose coefficients(phase 1)
- punpcklwd mm2,mm3 ; mm2=(42 43 52 53)
- punpckhwd mm5,mm3 ; mm5=(62 63 72 73)
-
- movq mm6, MMWORD [MMBLOCK(0,0,edx,SIZEOF_DCTELEM)]
- movq mm7, MMWORD [MMBLOCK(1,0,edx,SIZEOF_DCTELEM)]
- movq mm1, MMWORD [MMBLOCK(4,0,edx,SIZEOF_DCTELEM)]
- movq mm3, MMWORD [MMBLOCK(5,0,edx,SIZEOF_DCTELEM)]
-
- ; mm6=(00 10 20 30), mm1=(40 50 60 70)
- ; mm7=(01 11 21 31), mm3=(41 51 61 71)
-
- movq MMWORD [wk(0)], mm4 ; wk(0)=(22 23 32 33)
- movq MMWORD [wk(1)], mm2 ; wk(1)=(42 43 52 53)
-
- movq mm4,mm6 ; transpose coefficients(phase 1)
- punpcklwd mm6,mm7 ; mm6=(00 01 10 11)
- punpckhwd mm4,mm7 ; mm4=(20 21 30 31)
- movq mm2,mm1 ; transpose coefficients(phase 1)
- punpcklwd mm1,mm3 ; mm1=(40 41 50 51)
- punpckhwd mm2,mm3 ; mm2=(60 61 70 71)
-
- movq mm7,mm6 ; transpose coefficients(phase 2)
- punpckldq mm6,mm0 ; mm6=(00 01 02 03)=data0
- punpckhdq mm7,mm0 ; mm7=(10 11 12 13)=data1
- movq mm3,mm2 ; transpose coefficients(phase 2)
- punpckldq mm2,mm5 ; mm2=(60 61 62 63)=data6
- punpckhdq mm3,mm5 ; mm3=(70 71 72 73)=data7
-
- movq mm0,mm7
- movq mm5,mm6
- psubw mm7,mm2 ; mm7=data1-data6=tmp6
- psubw mm6,mm3 ; mm6=data0-data7=tmp7
- paddw mm0,mm2 ; mm0=data1+data6=tmp1
- paddw mm5,mm3 ; mm5=data0+data7=tmp0
-
- movq mm2, MMWORD [wk(0)] ; mm2=(22 23 32 33)
- movq mm3, MMWORD [wk(1)] ; mm3=(42 43 52 53)
- movq MMWORD [wk(0)], mm7 ; wk(0)=tmp6
- movq MMWORD [wk(1)], mm6 ; wk(1)=tmp7
-
- movq mm7,mm4 ; transpose coefficients(phase 2)
- punpckldq mm4,mm2 ; mm4=(20 21 22 23)=data2
- punpckhdq mm7,mm2 ; mm7=(30 31 32 33)=data3
- movq mm6,mm1 ; transpose coefficients(phase 2)
- punpckldq mm1,mm3 ; mm1=(40 41 42 43)=data4
- punpckhdq mm6,mm3 ; mm6=(50 51 52 53)=data5
-
- movq mm2,mm7
- movq mm3,mm4
- paddw mm7,mm1 ; mm7=data3+data4=tmp3
- paddw mm4,mm6 ; mm4=data2+data5=tmp2
- psubw mm2,mm1 ; mm2=data3-data4=tmp4
- psubw mm3,mm6 ; mm3=data2-data5=tmp5
-
- ; -- Even part
-
- movq mm1,mm5
- movq mm6,mm0
- paddw mm5,mm7 ; mm5=tmp10
- paddw mm0,mm4 ; mm0=tmp11
- psubw mm1,mm7 ; mm1=tmp13
- psubw mm6,mm4 ; mm6=tmp12
-
- movq mm7,mm5
- paddw mm5,mm0 ; mm5=tmp10+tmp11
- psubw mm7,mm0 ; mm7=tmp10-tmp11
-
- paddw mm5,[GOTOFF(ebx,PW_DESCALE_P2X)]
- paddw mm7,[GOTOFF(ebx,PW_DESCALE_P2X)]
- psraw mm5,PASS1_BITS ; mm5=data0
- psraw mm7,PASS1_BITS ; mm7=data4
-
- movq MMWORD [MMBLOCK(0,0,edx,SIZEOF_DCTELEM)], mm5
- movq MMWORD [MMBLOCK(4,0,edx,SIZEOF_DCTELEM)], mm7
-
- ; (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);
-
- movq mm4,mm1 ; mm1=tmp13
- movq mm0,mm1
- punpcklwd mm4,mm6 ; mm6=tmp12
- punpckhwd mm0,mm6
- movq mm1,mm4
- movq mm6,mm0
- pmaddwd mm4,[GOTOFF(ebx,PW_F130_F054)] ; mm4=data2L
- pmaddwd mm0,[GOTOFF(ebx,PW_F130_F054)] ; mm0=data2H
- pmaddwd mm1,[GOTOFF(ebx,PW_F054_MF130)] ; mm1=data6L
- pmaddwd mm6,[GOTOFF(ebx,PW_F054_MF130)] ; mm6=data6H
-
- paddd mm4,[GOTOFF(ebx,PD_DESCALE_P2)]
- paddd mm0,[GOTOFF(ebx,PD_DESCALE_P2)]
- psrad mm4,DESCALE_P2
- psrad mm0,DESCALE_P2
- paddd mm1,[GOTOFF(ebx,PD_DESCALE_P2)]
- paddd mm6,[GOTOFF(ebx,PD_DESCALE_P2)]
- psrad mm1,DESCALE_P2
- psrad mm6,DESCALE_P2
-
- packssdw mm4,mm0 ; mm4=data2
- packssdw mm1,mm6 ; mm1=data6
-
- movq MMWORD [MMBLOCK(2,0,edx,SIZEOF_DCTELEM)], mm4
- movq MMWORD [MMBLOCK(6,0,edx,SIZEOF_DCTELEM)], mm1
-
- ; -- Odd part
-
- movq mm5, MMWORD [wk(0)] ; mm5=tmp6
- movq mm7, MMWORD [wk(1)] ; mm7=tmp7
-
- movq mm0,mm2 ; mm2=tmp4
- movq mm6,mm3 ; mm3=tmp5
- paddw mm0,mm5 ; mm0=z3
- paddw mm6,mm7 ; mm6=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);
-
- movq mm4,mm0
- movq mm1,mm0
- punpcklwd mm4,mm6
- punpckhwd mm1,mm6
- movq mm0,mm4
- movq mm6,mm1
- pmaddwd mm4,[GOTOFF(ebx,PW_MF078_F117)] ; mm4=z3L
- pmaddwd mm1,[GOTOFF(ebx,PW_MF078_F117)] ; mm1=z3H
- pmaddwd mm0,[GOTOFF(ebx,PW_F117_F078)] ; mm0=z4L
- pmaddwd mm6,[GOTOFF(ebx,PW_F117_F078)] ; mm6=z4H
-
- movq MMWORD [wk(0)], mm4 ; wk(0)=z3L
- movq MMWORD [wk(1)], mm1 ; 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;
-
- movq mm4,mm2
- movq mm1,mm2
- punpcklwd mm4,mm7
- punpckhwd mm1,mm7
- movq mm2,mm4
- movq mm7,mm1
- pmaddwd mm4,[GOTOFF(ebx,PW_MF060_MF089)] ; mm4=tmp4L
- pmaddwd mm1,[GOTOFF(ebx,PW_MF060_MF089)] ; mm1=tmp4H
- pmaddwd mm2,[GOTOFF(ebx,PW_MF089_F060)] ; mm2=tmp7L
- pmaddwd mm7,[GOTOFF(ebx,PW_MF089_F060)] ; mm7=tmp7H
-
- paddd mm4, MMWORD [wk(0)] ; mm4=data7L
- paddd mm1, MMWORD [wk(1)] ; mm1=data7H
- paddd mm2,mm0 ; mm2=data1L
- paddd mm7,mm6 ; mm7=data1H
-
- paddd mm4,[GOTOFF(ebx,PD_DESCALE_P2)]
- paddd mm1,[GOTOFF(ebx,PD_DESCALE_P2)]
- psrad mm4,DESCALE_P2
- psrad mm1,DESCALE_P2
- paddd mm2,[GOTOFF(ebx,PD_DESCALE_P2)]
- paddd mm7,[GOTOFF(ebx,PD_DESCALE_P2)]
- psrad mm2,DESCALE_P2
- psrad mm7,DESCALE_P2
-
- packssdw mm4,mm1 ; mm4=data7
- packssdw mm2,mm7 ; mm2=data1
-
- movq MMWORD [MMBLOCK(7,0,edx,SIZEOF_DCTELEM)], mm4
- movq MMWORD [MMBLOCK(1,0,edx,SIZEOF_DCTELEM)], mm2
-
- movq mm1,mm3
- movq mm7,mm3
- punpcklwd mm1,mm5
- punpckhwd mm7,mm5
- movq mm3,mm1
- movq mm5,mm7
- pmaddwd mm1,[GOTOFF(ebx,PW_MF050_MF256)] ; mm1=tmp5L
- pmaddwd mm7,[GOTOFF(ebx,PW_MF050_MF256)] ; mm7=tmp5H
- pmaddwd mm3,[GOTOFF(ebx,PW_MF256_F050)] ; mm3=tmp6L
- pmaddwd mm5,[GOTOFF(ebx,PW_MF256_F050)] ; mm5=tmp6H
-
- paddd mm1,mm0 ; mm1=data5L
- paddd mm7,mm6 ; mm7=data5H
- paddd mm3, MMWORD [wk(0)] ; mm3=data3L
- paddd mm5, MMWORD [wk(1)] ; mm5=data3H
-
- paddd mm1,[GOTOFF(ebx,PD_DESCALE_P2)]
- paddd mm7,[GOTOFF(ebx,PD_DESCALE_P2)]
- psrad mm1,DESCALE_P2
- psrad mm7,DESCALE_P2
- paddd mm3,[GOTOFF(ebx,PD_DESCALE_P2)]
- paddd mm5,[GOTOFF(ebx,PD_DESCALE_P2)]
- psrad mm3,DESCALE_P2
- psrad mm5,DESCALE_P2
-
- packssdw mm1,mm7 ; mm1=data5
- packssdw mm3,mm5 ; mm3=data3
-
- movq MMWORD [MMBLOCK(5,0,edx,SIZEOF_DCTELEM)], mm1
- movq MMWORD [MMBLOCK(3,0,edx,SIZEOF_DCTELEM)], mm3
-
- add edx, byte 4*SIZEOF_DCTELEM
- dec ecx
- jnz near .columnloop
-
- emms ; empty MMX state
-
-; pop edi ; unused
-; pop esi ; unused
-; pop edx ; need not be preserved
-; pop ecx ; need not be preserved
- 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
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