564 lines
24 KiB
NASM
564 lines
24 KiB
NASM
;
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; jfdctint.asm - accurate integer FDCT (64-bit SSE2)
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;
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; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
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; Copyright 2009, 2014, D. R. Commander
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;
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; Based on
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; x86 SIMD extension for IJG JPEG library
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; Copyright (C) 1999-2006, MIYASAKA Masaru.
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; For conditions of distribution and use, see copyright notice in jsimdext.inc
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;
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; This file should be assembled with NASM (Netwide Assembler),
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; can *not* be assembled with Microsoft's MASM or any compatible
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; assembler (including Borland's Turbo Assembler).
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; NASM is available from http://nasm.sourceforge.net/ or
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; http://sourceforge.net/project/showfiles.php?group_id=6208
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;
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; This file contains a slow-but-accurate integer implementation of the
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; forward DCT (Discrete Cosine Transform). The following code is based
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; directly on the IJG's original jfdctint.c; see the jfdctint.c for
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; more details.
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;
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; [TAB8]
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%include "jsimdext.inc"
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%include "jdct.inc"
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; --------------------------------------------------------------------------
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%define CONST_BITS 13
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%define PASS1_BITS 2
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%define DESCALE_P1 (CONST_BITS-PASS1_BITS)
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%define DESCALE_P2 (CONST_BITS+PASS1_BITS)
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%if CONST_BITS == 13
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F_0_298 equ 2446 ; FIX(0.298631336)
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F_0_390 equ 3196 ; FIX(0.390180644)
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F_0_541 equ 4433 ; FIX(0.541196100)
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F_0_765 equ 6270 ; FIX(0.765366865)
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F_0_899 equ 7373 ; FIX(0.899976223)
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F_1_175 equ 9633 ; FIX(1.175875602)
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F_1_501 equ 12299 ; FIX(1.501321110)
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F_1_847 equ 15137 ; FIX(1.847759065)
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F_1_961 equ 16069 ; FIX(1.961570560)
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F_2_053 equ 16819 ; FIX(2.053119869)
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F_2_562 equ 20995 ; FIX(2.562915447)
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F_3_072 equ 25172 ; FIX(3.072711026)
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%else
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; NASM cannot do compile-time arithmetic on floating-point constants.
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%define DESCALE(x,n) (((x)+(1<<((n)-1)))>>(n))
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F_0_298 equ DESCALE( 320652955,30-CONST_BITS) ; FIX(0.298631336)
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F_0_390 equ DESCALE( 418953276,30-CONST_BITS) ; FIX(0.390180644)
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F_0_541 equ DESCALE( 581104887,30-CONST_BITS) ; FIX(0.541196100)
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F_0_765 equ DESCALE( 821806413,30-CONST_BITS) ; FIX(0.765366865)
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F_0_899 equ DESCALE( 966342111,30-CONST_BITS) ; FIX(0.899976223)
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F_1_175 equ DESCALE(1262586813,30-CONST_BITS) ; FIX(1.175875602)
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F_1_501 equ DESCALE(1612031267,30-CONST_BITS) ; FIX(1.501321110)
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F_1_847 equ DESCALE(1984016188,30-CONST_BITS) ; FIX(1.847759065)
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F_1_961 equ DESCALE(2106220350,30-CONST_BITS) ; FIX(1.961570560)
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F_2_053 equ DESCALE(2204520673,30-CONST_BITS) ; FIX(2.053119869)
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F_2_562 equ DESCALE(2751909506,30-CONST_BITS) ; FIX(2.562915447)
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F_3_072 equ DESCALE(3299298341,30-CONST_BITS) ; FIX(3.072711026)
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%endif
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; --------------------------------------------------------------------------
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SECTION SEG_CONST
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alignz 16
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global EXTN(jconst_fdct_islow_sse2)
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EXTN(jconst_fdct_islow_sse2):
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PW_F130_F054 times 4 dw (F_0_541+F_0_765), F_0_541
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PW_F054_MF130 times 4 dw F_0_541, (F_0_541-F_1_847)
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PW_MF078_F117 times 4 dw (F_1_175-F_1_961), F_1_175
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PW_F117_F078 times 4 dw F_1_175, (F_1_175-F_0_390)
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PW_MF060_MF089 times 4 dw (F_0_298-F_0_899),-F_0_899
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PW_MF089_F060 times 4 dw -F_0_899, (F_1_501-F_0_899)
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PW_MF050_MF256 times 4 dw (F_2_053-F_2_562),-F_2_562
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PW_MF256_F050 times 4 dw -F_2_562, (F_3_072-F_2_562)
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PD_DESCALE_P1 times 4 dd 1 << (DESCALE_P1-1)
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PD_DESCALE_P2 times 4 dd 1 << (DESCALE_P2-1)
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PW_DESCALE_P2X times 8 dw 1 << (PASS1_BITS-1)
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alignz 16
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; --------------------------------------------------------------------------
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SECTION SEG_TEXT
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BITS 64
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;
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; Perform the forward DCT on one block of samples.
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;
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; GLOBAL(void)
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; jsimd_fdct_islow_sse2 (DCTELEM * data)
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;
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; r10 = DCTELEM * data
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align 16
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global EXTN(jsimd_fdct_islow_sse2)
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EXTN(jsimd_fdct_islow_sse2):
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push rbp
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mov rax,rsp
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mov rbp,rsp
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collect_args
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; ---- Pass 1: process rows.
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mov rdx, r10 ; (DCTELEM *)
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movdqa xmm8, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_DCTELEM)]
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movdqa xmm9, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_DCTELEM)]
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movdqa xmm2, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_DCTELEM)]
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movdqa xmm11, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_DCTELEM)]
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movdqa xmm4, XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_DCTELEM)]
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movdqa xmm13, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_DCTELEM)]
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movdqa xmm5, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_DCTELEM)]
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movdqa xmm15, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_DCTELEM)]
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; xmm8=(00 01 02 03 04 05 06 07), xmm9=(10 11 12 13 14 15 16 17)
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; xmm2=(20 21 22 23 24 25 26 27), xmm11=(30 31 32 33 34 35 36 37)
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; xmm4=(40 41 42 43 44 45 46 47), xmm13=(50 51 52 53 54 55 56 57)
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; xmm5=(60 61 62 63 64 65 66 67), xmm15=(70 71 72 73 74 75 76 77)
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movdqa xmm12,xmm8 ; transpose coefficients(phase 1)
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punpcklwd xmm8,xmm9 ; xmm8=(00 10 01 11 02 12 03 13)
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punpckhwd xmm12,xmm9 ; xmm12=(04 14 05 15 06 16 07 17)
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movdqa xmm1,xmm2 ; transpose coefficients(phase 1)
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punpcklwd xmm2,xmm11 ; xmm2=(20 30 21 31 22 32 23 33)
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punpckhwd xmm1,xmm11 ; xmm1=(24 34 25 35 26 36 27 37)
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movdqa xmm0,xmm4 ; transpose coefficients(phase 1)
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punpcklwd xmm4,xmm13 ; xmm4=(40 50 41 51 42 52 43 53)
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punpckhwd xmm0,xmm13 ; xmm0=(44 54 45 55 46 56 47 57)
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movdqa xmm3,xmm5 ; transpose coefficients(phase 1)
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punpcklwd xmm5,xmm15 ; xmm5=(60 70 61 71 62 72 63 73)
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punpckhwd xmm3,xmm15 ; xmm3=(64 74 65 75 66 76 67 77)
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movdqa xmm10,xmm8 ; transpose coefficients(phase 2)
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punpckldq xmm8,xmm2 ; xmm8=(00 10 20 30 01 11 21 31)
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punpckhdq xmm10,xmm2 ; xmm10=(02 12 22 32 03 13 23 33)
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movdqa xmm14,xmm12 ; transpose coefficients(phase 2)
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punpckldq xmm12,xmm1 ; xmm12=(04 14 24 34 05 15 25 35)
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punpckhdq xmm14,xmm1 ; xmm14=(06 16 26 36 07 17 27 37)
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movdqa xmm6,xmm4 ; transpose coefficients(phase 2)
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punpckldq xmm4,xmm5 ; xmm4=(40 50 60 70 41 51 61 71)
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punpckhdq xmm6,xmm5 ; xmm6=(42 52 62 72 43 53 63 73)
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movdqa xmm7,xmm0 ; transpose coefficients(phase 2)
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punpckldq xmm0,xmm3 ; xmm0=(44 54 64 74 45 55 65 75)
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punpckhdq xmm7,xmm3 ; xmm7=(46 56 66 76 47 57 67 77)
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movdqa xmm9,xmm8 ; transpose coefficients(phase 3)
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punpcklqdq xmm8,xmm4 ; xmm8=(00 10 20 30 40 50 60 70)=data0
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punpckhqdq xmm9,xmm4 ; xmm9=(01 11 21 31 41 51 61 71)=data1
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movdqa xmm11,xmm10 ; transpose coefficients(phase 3)
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punpcklqdq xmm10,xmm6 ; xmm10=(02 12 22 32 42 52 62 72)=data2
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punpckhqdq xmm11,xmm6 ; xmm11=(03 13 23 33 43 53 63 73)=data3
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movdqa xmm13,xmm12 ; transpose coefficients(phase 3)
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punpcklqdq xmm12,xmm0 ; xmm12=(04 14 24 34 44 54 64 74)=data4
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punpckhqdq xmm13,xmm0 ; xmm13=(05 15 25 35 45 55 65 75)=data5
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movdqa xmm15,xmm14 ; transpose coefficients(phase 3)
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punpcklqdq xmm14,xmm7 ; xmm14=(06 16 26 36 46 56 66 76)=data6
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punpckhqdq xmm15,xmm7 ; xmm15=(07 17 27 37 47 57 67 77)=data7
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movdqa xmm0,xmm8
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paddw xmm0,xmm15 ; xmm0=data0+data7=tmp0
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movdqa xmm1,xmm9
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paddw xmm1,xmm14 ; xmm1=data1+data6=tmp1
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movdqa xmm2,xmm10
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paddw xmm2,xmm13 ; xmm2=data2+data5=tmp2
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movdqa xmm3,xmm11
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paddw xmm3,xmm12 ; xmm3=data3+data4=tmp3
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psubw xmm11,xmm12 ; xmm11=data3-data4=tmp4
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psubw xmm10,xmm13 ; xmm10=data2-data5=tmp5
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psubw xmm9,xmm14 ; xmm9=data1-data6=tmp6
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psubw xmm8,xmm15 ; xmm8=data0-data7=tmp7
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; -- Even part
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movdqa xmm4,xmm0
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paddw xmm4,xmm3 ; xmm4=tmp0+tmp3=tmp10
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movdqa xmm5,xmm1
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paddw xmm5,xmm2 ; xmm5=tmp1+tmp2=tmp11
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psubw xmm1,xmm2 ; xmm1=tmp1-tmp2=tmp12
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psubw xmm0,xmm3 ; xmm0=tmp0-tmp3=tmp13
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movdqa xmm12,xmm4
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paddw xmm12,xmm5 ; xmm12=tmp10+tmp11
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psubw xmm4,xmm5 ; xmm4=tmp10-tmp11
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psllw xmm12,PASS1_BITS ; xmm12=out0
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psllw xmm4,PASS1_BITS ; xmm4=out4
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; (Original)
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; z1 = (tmp12 + tmp13) * 0.541196100;
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; out2 = z1 + tmp13 * 0.765366865;
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; out6 = z1 + tmp12 * -1.847759065;
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;
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; (This implementation)
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; out2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100;
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; out6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065);
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movdqa xmm2,xmm0 ; xmm0=tmp13
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movdqa xmm6,xmm0
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punpcklwd xmm2,xmm1 ; xmm1=tmp12
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punpckhwd xmm6,xmm1
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movdqa xmm5,xmm2
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movdqa xmm0,xmm6
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pmaddwd xmm2,[rel PW_F130_F054] ; xmm2=out2L
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pmaddwd xmm6,[rel PW_F130_F054] ; xmm6=out2H
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pmaddwd xmm5,[rel PW_F054_MF130] ; xmm5=out6L
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pmaddwd xmm0,[rel PW_F054_MF130] ; xmm0=out6H
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paddd xmm2,[rel PD_DESCALE_P1]
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paddd xmm6,[rel PD_DESCALE_P1]
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psrad xmm2,DESCALE_P1
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psrad xmm6,DESCALE_P1
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paddd xmm5,[rel PD_DESCALE_P1]
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paddd xmm0,[rel PD_DESCALE_P1]
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psrad xmm5,DESCALE_P1
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psrad xmm0,DESCALE_P1
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packssdw xmm2,xmm6 ; xmm2=out2
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packssdw xmm5,xmm0 ; xmm5=out6
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; -- Odd part
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movdqa xmm6,xmm11 ; xmm11=tmp4
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movdqa xmm0,xmm10 ; xmm10=tmp5
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paddw xmm6,xmm9 ; xmm6=tmp4+tmp6=z3
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paddw xmm0,xmm8 ; xmm0=tmp5+tmp7=z4
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; (Original)
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; z5 = (z3 + z4) * 1.175875602;
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; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;
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; z3 += z5; z4 += z5;
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;
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; (This implementation)
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; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
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; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
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movdqa xmm7,xmm6
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movdqa xmm14,xmm6
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punpcklwd xmm7,xmm0
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punpckhwd xmm14,xmm0
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movdqa xmm6,xmm7
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movdqa xmm0,xmm14
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pmaddwd xmm7,[rel PW_MF078_F117] ; xmm7=z3L
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pmaddwd xmm14,[rel PW_MF078_F117] ; xmm14=z3H
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pmaddwd xmm6,[rel PW_F117_F078] ; xmm6=z4L
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pmaddwd xmm0,[rel PW_F117_F078] ; xmm0=z4H
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; (Original)
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; z1 = tmp4 + tmp7; z2 = tmp5 + tmp6;
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; tmp4 = tmp4 * 0.298631336; tmp5 = tmp5 * 2.053119869;
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; tmp6 = tmp6 * 3.072711026; tmp7 = tmp7 * 1.501321110;
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; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447;
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; out7 = tmp4 + z1 + z3; out5 = tmp5 + z2 + z4;
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; out3 = tmp6 + z2 + z3; out1 = tmp7 + z1 + z4;
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;
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; (This implementation)
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; tmp4 = tmp4 * (0.298631336 - 0.899976223) + tmp7 * -0.899976223;
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; tmp5 = tmp5 * (2.053119869 - 2.562915447) + tmp6 * -2.562915447;
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; tmp6 = tmp5 * -2.562915447 + tmp6 * (3.072711026 - 2.562915447);
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; tmp7 = tmp4 * -0.899976223 + tmp7 * (1.501321110 - 0.899976223);
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; out7 = tmp4 + z3; out5 = tmp5 + z4;
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; out3 = tmp6 + z3; out1 = tmp7 + z4;
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movdqa xmm15,xmm11 ; xmm11=tmp4
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movdqa xmm13,xmm11
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punpcklwd xmm15,xmm8 ; xmm8=tmp7
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punpckhwd xmm13,xmm8
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movdqa xmm8,xmm15
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movdqa xmm1,xmm13
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pmaddwd xmm15,[rel PW_MF060_MF089] ; xmm15=tmp4L
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pmaddwd xmm13,[rel PW_MF060_MF089] ; xmm13=tmp4H
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pmaddwd xmm8,[rel PW_MF089_F060] ; xmm8=tmp7L
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pmaddwd xmm1,[rel PW_MF089_F060] ; xmm1=tmp7H
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paddd xmm15,xmm7 ; xmm15=out7L
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paddd xmm13,xmm14 ; xmm13=out7H
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paddd xmm8,xmm6 ; xmm8=out1L
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paddd xmm1,xmm0 ; xmm1=out1H
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paddd xmm15,[rel PD_DESCALE_P1]
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paddd xmm13,[rel PD_DESCALE_P1]
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psrad xmm15,DESCALE_P1
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psrad xmm13,DESCALE_P1
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paddd xmm8,[rel PD_DESCALE_P1]
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paddd xmm1,[rel PD_DESCALE_P1]
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psrad xmm8,DESCALE_P1
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psrad xmm1,DESCALE_P1
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packssdw xmm15,xmm13 ; xmm15=out7
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packssdw xmm8,xmm1 ; xmm8=out1
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movdqa xmm13,xmm10 ; xmm10=tmp5
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movdqa xmm1,xmm10
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punpcklwd xmm13,xmm9 ; xmm9=tmp6
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punpckhwd xmm1,xmm9
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movdqa xmm11,xmm13
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movdqa xmm3,xmm1
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pmaddwd xmm13,[rel PW_MF050_MF256] ; xmm13=tmp5L
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pmaddwd xmm1,[rel PW_MF050_MF256] ; xmm1=tmp5H
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pmaddwd xmm11,[rel PW_MF256_F050] ; xmm11=tmp6L
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pmaddwd xmm3,[rel PW_MF256_F050] ; xmm3=tmp6H
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paddd xmm13,xmm6 ; xmm13=out5L
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paddd xmm1,xmm0 ; xmm1=out5H
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paddd xmm11,xmm7 ; xmm11=out3L
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paddd xmm3,xmm14 ; xmm3=out3H
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paddd xmm13,[rel PD_DESCALE_P1]
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paddd xmm1,[rel PD_DESCALE_P1]
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psrad xmm13,DESCALE_P1
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psrad xmm1,DESCALE_P1
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paddd xmm11,[rel PD_DESCALE_P1]
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paddd xmm3,[rel PD_DESCALE_P1]
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psrad xmm11,DESCALE_P1
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psrad xmm3,DESCALE_P1
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packssdw xmm13,xmm1 ; xmm13=out5
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packssdw xmm11,xmm3 ; xmm11=out3
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; ---- Pass 2: process columns.
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; Re-order registers so we can reuse the same transpose code
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movdqa xmm9,xmm8
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movdqa xmm8,xmm12
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; xmm8=(00 10 20 30 40 50 60 70), xmm9=(01 11 21 31 41 51 61 71)
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; xmm2=(02 12 22 32 42 52 62 72), xmm11=(03 13 23 33 43 53 63 73)
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; xmm4=(04 14 24 34 44 54 64 74), xmm13=(05 15 25 35 45 55 65 75)
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; xmm5=(06 16 26 36 46 56 66 76), xmm15=(07 17 27 37 47 57 67 77)
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movdqa xmm12,xmm8 ; transpose coefficients(phase 1)
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punpcklwd xmm8,xmm9 ; xmm8=(00 01 10 11 20 21 30 31)
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punpckhwd xmm12,xmm9 ; xmm12=(40 41 50 51 60 61 70 71)
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movdqa xmm1,xmm2 ; transpose coefficients(phase 1)
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punpcklwd xmm2,xmm11 ; xmm2=(02 03 12 13 22 23 32 33)
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punpckhwd xmm1,xmm11 ; xmm1=(42 43 52 53 62 63 72 73)
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movdqa xmm0,xmm4 ; transpose coefficients(phase 1)
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punpcklwd xmm4,xmm13 ; xmm4=(04 05 14 15 24 25 34 35)
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punpckhwd xmm0,xmm13 ; xmm0=(44 45 54 55 64 65 74 75)
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movdqa xmm3,xmm5 ; transpose coefficients(phase 1)
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punpcklwd xmm5,xmm15 ; xmm5=(06 07 16 17 26 27 36 37)
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punpckhwd xmm3,xmm15 ; xmm3=(46 47 56 57 66 67 76 77)
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movdqa xmm10,xmm8 ; transpose coefficients(phase 2)
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punpckldq xmm8,xmm2 ; xmm8=(00 01 02 03 10 11 12 13)
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punpckhdq xmm10,xmm2 ; xmm10=(20 21 22 23 30 31 32 33)
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movdqa xmm14,xmm12 ; transpose coefficients(phase 2)
|
|
punpckldq xmm12,xmm1 ; xmm12=(40 41 42 43 50 51 52 53)
|
|
punpckhdq xmm14,xmm1 ; xmm14=(60 61 62 63 70 71 72 73)
|
|
|
|
movdqa xmm6,xmm4 ; transpose coefficients(phase 2)
|
|
punpckldq xmm4,xmm5 ; xmm4=(04 05 06 07 14 15 16 17)
|
|
punpckhdq xmm6,xmm5 ; xmm6=(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 xmm9,xmm8 ; transpose coefficients(phase 3)
|
|
punpcklqdq xmm8,xmm4 ; xmm8=(00 01 02 03 04 05 06 07)=data0
|
|
punpckhqdq xmm9,xmm4 ; xmm9=(10 11 12 13 14 15 16 17)=data1
|
|
movdqa xmm11,xmm10 ; transpose coefficients(phase 3)
|
|
punpcklqdq xmm10,xmm6 ; xmm10=(20 21 22 23 24 25 26 27)=data2
|
|
punpckhqdq xmm11,xmm6 ; xmm11=(30 31 32 33 34 35 36 37)=data3
|
|
|
|
movdqa xmm13,xmm12 ; transpose coefficients(phase 3)
|
|
punpcklqdq xmm12,xmm0 ; xmm12=(40 41 42 43 44 45 46 47)=data4
|
|
punpckhqdq xmm13,xmm0 ; xmm13=(50 51 52 53 54 55 56 57)=data5
|
|
movdqa xmm15,xmm14 ; transpose coefficients(phase 3)
|
|
punpcklqdq xmm14,xmm7 ; xmm14=(60 61 62 63 64 65 66 67)=data6
|
|
punpckhqdq xmm15,xmm7 ; xmm15=(70 71 72 73 74 75 76 77)=data7
|
|
|
|
movdqa xmm0,xmm8
|
|
paddw xmm0,xmm15 ; xmm0=data0+data7=tmp0
|
|
movdqa xmm1,xmm9
|
|
paddw xmm1,xmm14 ; xmm1=data1+data6=tmp1
|
|
movdqa xmm2,xmm10
|
|
paddw xmm2,xmm13 ; xmm2=data2+data5=tmp2
|
|
movdqa xmm3,xmm11
|
|
paddw xmm3,xmm12 ; xmm3=data3+data4=tmp3
|
|
|
|
psubw xmm11,xmm12 ; xmm11=data3-data4=tmp4
|
|
psubw xmm10,xmm13 ; xmm10=data2-data5=tmp5
|
|
psubw xmm9,xmm14 ; xmm9=data1-data6=tmp6
|
|
psubw xmm8,xmm15 ; xmm8=data0-data7=tmp7
|
|
|
|
; -- Even part
|
|
|
|
movdqa xmm4,xmm0
|
|
paddw xmm4,xmm3 ; xmm4=tmp0+tmp3=tmp10
|
|
movdqa xmm5,xmm1
|
|
paddw xmm5,xmm2 ; xmm5=tmp1+tmp2=tmp11
|
|
psubw xmm1,xmm2 ; xmm1=tmp1-tmp2=tmp12
|
|
psubw xmm0,xmm3 ; xmm0=tmp0-tmp3=tmp13
|
|
|
|
movdqa xmm12,xmm4
|
|
paddw xmm12,xmm5 ; xmm12=tmp10+tmp11
|
|
psubw xmm4,xmm5 ; xmm4=tmp10-tmp11
|
|
|
|
paddw xmm12,[rel PW_DESCALE_P2X]
|
|
paddw xmm4,[rel PW_DESCALE_P2X]
|
|
psraw xmm12,PASS1_BITS ; xmm12=out0
|
|
psraw xmm4,PASS1_BITS ; xmm4=out4
|
|
|
|
; (Original)
|
|
; z1 = (tmp12 + tmp13) * 0.541196100;
|
|
; out2 = z1 + tmp13 * 0.765366865;
|
|
; out6 = z1 + tmp12 * -1.847759065;
|
|
;
|
|
; (This implementation)
|
|
; out2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100;
|
|
; out6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065);
|
|
|
|
movdqa xmm2,xmm0 ; xmm0=tmp13
|
|
movdqa xmm6,xmm0
|
|
punpcklwd xmm2,xmm1 ; xmm1=tmp12
|
|
punpckhwd xmm6,xmm1
|
|
movdqa xmm5,xmm2
|
|
movdqa xmm0,xmm6
|
|
pmaddwd xmm2,[rel PW_F130_F054] ; xmm2=out2L
|
|
pmaddwd xmm6,[rel PW_F130_F054] ; xmm6=out2H
|
|
pmaddwd xmm5,[rel PW_F054_MF130] ; xmm5=out6L
|
|
pmaddwd xmm0,[rel PW_F054_MF130] ; xmm0=out6H
|
|
|
|
paddd xmm2,[rel PD_DESCALE_P2]
|
|
paddd xmm6,[rel PD_DESCALE_P2]
|
|
psrad xmm2,DESCALE_P2
|
|
psrad xmm6,DESCALE_P2
|
|
paddd xmm5,[rel PD_DESCALE_P2]
|
|
paddd xmm0,[rel PD_DESCALE_P2]
|
|
psrad xmm5,DESCALE_P2
|
|
psrad xmm0,DESCALE_P2
|
|
|
|
packssdw xmm2,xmm6 ; xmm2=out2
|
|
packssdw xmm5,xmm0 ; xmm5=out6
|
|
|
|
; -- Odd part
|
|
|
|
movdqa xmm6,xmm11 ; xmm11=tmp4
|
|
movdqa xmm0,xmm10 ; xmm10=tmp5
|
|
paddw xmm6,xmm9 ; xmm6=tmp4+tmp6=z3
|
|
paddw xmm0,xmm8 ; xmm0=tmp5+tmp7=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 xmm14,xmm6
|
|
punpcklwd xmm7,xmm0
|
|
punpckhwd xmm14,xmm0
|
|
movdqa xmm6,xmm7
|
|
movdqa xmm0,xmm14
|
|
pmaddwd xmm7,[rel PW_MF078_F117] ; xmm7=z3L
|
|
pmaddwd xmm14,[rel PW_MF078_F117] ; xmm14=z3H
|
|
pmaddwd xmm6,[rel PW_F117_F078] ; xmm6=z4L
|
|
pmaddwd xmm0,[rel PW_F117_F078] ; xmm0=z4H
|
|
|
|
; (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;
|
|
; out7 = tmp4 + z1 + z3; out5 = tmp5 + z2 + z4;
|
|
; out3 = tmp6 + z2 + z3; out1 = 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);
|
|
; out7 = tmp4 + z3; out5 = tmp5 + z4;
|
|
; out3 = tmp6 + z3; out1 = tmp7 + z4;
|
|
|
|
movdqa xmm15,xmm11 ; xmm11=tmp4
|
|
movdqa xmm13,xmm11
|
|
punpcklwd xmm15,xmm8 ; xmm8=tmp7
|
|
punpckhwd xmm13,xmm8
|
|
movdqa xmm8,xmm15
|
|
movdqa xmm1,xmm13
|
|
pmaddwd xmm15,[rel PW_MF060_MF089] ; xmm15=tmp4L
|
|
pmaddwd xmm13,[rel PW_MF060_MF089] ; xmm13=tmp4H
|
|
pmaddwd xmm8,[rel PW_MF089_F060] ; xmm8=tmp7L
|
|
pmaddwd xmm1,[rel PW_MF089_F060] ; xmm1=tmp7H
|
|
|
|
paddd xmm15,xmm7 ; xmm15=out7L
|
|
paddd xmm13,xmm14 ; xmm13=out7H
|
|
paddd xmm8,xmm6 ; xmm8=out1L
|
|
paddd xmm1,xmm0 ; xmm1=out1H
|
|
|
|
paddd xmm15,[rel PD_DESCALE_P2]
|
|
paddd xmm13,[rel PD_DESCALE_P2]
|
|
psrad xmm15,DESCALE_P2
|
|
psrad xmm13,DESCALE_P2
|
|
paddd xmm8,[rel PD_DESCALE_P2]
|
|
paddd xmm1,[rel PD_DESCALE_P2]
|
|
psrad xmm8,DESCALE_P2
|
|
psrad xmm1,DESCALE_P2
|
|
|
|
packssdw xmm15,xmm13 ; xmm15=out7
|
|
packssdw xmm8,xmm1 ; xmm8=out1
|
|
|
|
movdqa xmm13,xmm10 ; xmm10=tmp5
|
|
movdqa xmm1,xmm10
|
|
punpcklwd xmm13,xmm9 ; xmm9=tmp6
|
|
punpckhwd xmm1,xmm9
|
|
movdqa xmm11,xmm13
|
|
movdqa xmm3,xmm1
|
|
pmaddwd xmm13,[rel PW_MF050_MF256] ; xmm13=tmp5L
|
|
pmaddwd xmm1,[rel PW_MF050_MF256] ; xmm1=tmp5H
|
|
pmaddwd xmm11,[rel PW_MF256_F050] ; xmm11=tmp6L
|
|
pmaddwd xmm3,[rel PW_MF256_F050] ; xmm3=tmp6H
|
|
|
|
paddd xmm13,xmm6 ; xmm13=out5L
|
|
paddd xmm1,xmm0 ; xmm1=out5H
|
|
paddd xmm11,xmm7 ; xmm11=out3L
|
|
paddd xmm3,xmm14 ; xmm3=out3H
|
|
|
|
paddd xmm13,[rel PD_DESCALE_P2]
|
|
paddd xmm1,[rel PD_DESCALE_P2]
|
|
psrad xmm13,DESCALE_P2
|
|
psrad xmm1,DESCALE_P2
|
|
paddd xmm11,[rel PD_DESCALE_P2]
|
|
paddd xmm3,[rel PD_DESCALE_P2]
|
|
psrad xmm11,DESCALE_P2
|
|
psrad xmm3,DESCALE_P2
|
|
|
|
packssdw xmm13,xmm1 ; xmm13=out5
|
|
packssdw xmm11,xmm3 ; xmm11=out3
|
|
|
|
; -- Write result
|
|
|
|
movdqa XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_DCTELEM)], xmm12
|
|
movdqa XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_DCTELEM)], xmm8
|
|
movdqa XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_DCTELEM)], xmm2
|
|
movdqa XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_DCTELEM)], xmm11
|
|
movdqa XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_DCTELEM)], xmm4
|
|
movdqa XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_DCTELEM)], xmm13
|
|
movdqa XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_DCTELEM)], xmm5
|
|
movdqa XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_DCTELEM)], xmm15
|
|
|
|
uncollect_args
|
|
pop rbp
|
|
ret
|
|
|
|
; For some reason, the OS X linker does not honor the request to align the
|
|
; segment unless we do this.
|
|
align 16
|