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635 строки
21 KiB
NASM
635 строки
21 KiB
NASM
;
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; jfss2int.asm - accurate integer FDCT (SSE2)
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;
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; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
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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 32
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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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%define data(b) (b)+8 ; DCTELEM * data
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%define original_ebp ebp+0
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%define wk(i) ebp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
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%define WK_NUM 6
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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 ebp
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mov eax,esp ; eax = original ebp
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sub esp, byte 4
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and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
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mov [esp],eax
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mov ebp,esp ; ebp = aligned ebp
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lea esp, [wk(0)]
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pushpic ebx
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; push ecx ; unused
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; push edx ; need not be preserved
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; push esi ; unused
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; push edi ; unused
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get_GOT ebx ; get GOT address
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; ---- Pass 1: process rows.
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mov edx, POINTER [data(eax)] ; (DCTELEM *)
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movdqa xmm0, XMMWORD [XMMBLOCK(0,0,edx,SIZEOF_DCTELEM)]
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movdqa xmm1, XMMWORD [XMMBLOCK(1,0,edx,SIZEOF_DCTELEM)]
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movdqa xmm2, XMMWORD [XMMBLOCK(2,0,edx,SIZEOF_DCTELEM)]
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movdqa xmm3, XMMWORD [XMMBLOCK(3,0,edx,SIZEOF_DCTELEM)]
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; xmm0=(00 01 02 03 04 05 06 07), xmm2=(20 21 22 23 24 25 26 27)
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; xmm1=(10 11 12 13 14 15 16 17), xmm3=(30 31 32 33 34 35 36 37)
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movdqa xmm4,xmm0 ; transpose coefficients(phase 1)
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punpcklwd xmm0,xmm1 ; xmm0=(00 10 01 11 02 12 03 13)
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punpckhwd xmm4,xmm1 ; xmm4=(04 14 05 15 06 16 07 17)
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movdqa xmm5,xmm2 ; transpose coefficients(phase 1)
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punpcklwd xmm2,xmm3 ; xmm2=(20 30 21 31 22 32 23 33)
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punpckhwd xmm5,xmm3 ; xmm5=(24 34 25 35 26 36 27 37)
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movdqa xmm6, XMMWORD [XMMBLOCK(4,0,edx,SIZEOF_DCTELEM)]
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movdqa xmm7, XMMWORD [XMMBLOCK(5,0,edx,SIZEOF_DCTELEM)]
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movdqa xmm1, XMMWORD [XMMBLOCK(6,0,edx,SIZEOF_DCTELEM)]
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movdqa xmm3, XMMWORD [XMMBLOCK(7,0,edx,SIZEOF_DCTELEM)]
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; xmm6=( 4 12 20 28 36 44 52 60), xmm1=( 6 14 22 30 38 46 54 62)
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; xmm7=( 5 13 21 29 37 45 53 61), xmm3=( 7 15 23 31 39 47 55 63)
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movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=(20 30 21 31 22 32 23 33)
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movdqa XMMWORD [wk(1)], xmm5 ; wk(1)=(24 34 25 35 26 36 27 37)
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movdqa xmm2,xmm6 ; transpose coefficients(phase 1)
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punpcklwd xmm6,xmm7 ; xmm6=(40 50 41 51 42 52 43 53)
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punpckhwd xmm2,xmm7 ; xmm2=(44 54 45 55 46 56 47 57)
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movdqa xmm5,xmm1 ; transpose coefficients(phase 1)
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punpcklwd xmm1,xmm3 ; xmm1=(60 70 61 71 62 72 63 73)
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punpckhwd xmm5,xmm3 ; xmm5=(64 74 65 75 66 76 67 77)
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movdqa xmm7,xmm6 ; transpose coefficients(phase 2)
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punpckldq xmm6,xmm1 ; xmm6=(40 50 60 70 41 51 61 71)
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punpckhdq xmm7,xmm1 ; xmm7=(42 52 62 72 43 53 63 73)
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movdqa xmm3,xmm2 ; transpose coefficients(phase 2)
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punpckldq xmm2,xmm5 ; xmm2=(44 54 64 74 45 55 65 75)
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punpckhdq xmm3,xmm5 ; xmm3=(46 56 66 76 47 57 67 77)
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movdqa xmm1, XMMWORD [wk(0)] ; xmm1=(20 30 21 31 22 32 23 33)
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movdqa xmm5, XMMWORD [wk(1)] ; xmm5=(24 34 25 35 26 36 27 37)
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movdqa XMMWORD [wk(2)], xmm7 ; wk(2)=(42 52 62 72 43 53 63 73)
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movdqa XMMWORD [wk(3)], xmm2 ; wk(3)=(44 54 64 74 45 55 65 75)
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movdqa xmm7,xmm0 ; transpose coefficients(phase 2)
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punpckldq xmm0,xmm1 ; xmm0=(00 10 20 30 01 11 21 31)
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punpckhdq xmm7,xmm1 ; xmm7=(02 12 22 32 03 13 23 33)
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movdqa xmm2,xmm4 ; transpose coefficients(phase 2)
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punpckldq xmm4,xmm5 ; xmm4=(04 14 24 34 05 15 25 35)
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punpckhdq xmm2,xmm5 ; xmm2=(06 16 26 36 07 17 27 37)
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movdqa xmm1,xmm0 ; transpose coefficients(phase 3)
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punpcklqdq xmm0,xmm6 ; xmm0=(00 10 20 30 40 50 60 70)=data0
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punpckhqdq xmm1,xmm6 ; xmm1=(01 11 21 31 41 51 61 71)=data1
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movdqa xmm5,xmm2 ; transpose coefficients(phase 3)
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punpcklqdq xmm2,xmm3 ; xmm2=(06 16 26 36 46 56 66 76)=data6
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punpckhqdq xmm5,xmm3 ; xmm5=(07 17 27 37 47 57 67 77)=data7
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movdqa xmm6,xmm1
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movdqa xmm3,xmm0
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psubw xmm1,xmm2 ; xmm1=data1-data6=tmp6
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psubw xmm0,xmm5 ; xmm0=data0-data7=tmp7
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paddw xmm6,xmm2 ; xmm6=data1+data6=tmp1
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paddw xmm3,xmm5 ; xmm3=data0+data7=tmp0
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movdqa xmm2, XMMWORD [wk(2)] ; xmm2=(42 52 62 72 43 53 63 73)
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movdqa xmm5, XMMWORD [wk(3)] ; xmm5=(44 54 64 74 45 55 65 75)
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movdqa XMMWORD [wk(0)], xmm1 ; wk(0)=tmp6
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movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=tmp7
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movdqa xmm1,xmm7 ; transpose coefficients(phase 3)
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punpcklqdq xmm7,xmm2 ; xmm7=(02 12 22 32 42 52 62 72)=data2
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punpckhqdq xmm1,xmm2 ; xmm1=(03 13 23 33 43 53 63 73)=data3
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movdqa xmm0,xmm4 ; transpose coefficients(phase 3)
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punpcklqdq xmm4,xmm5 ; xmm4=(04 14 24 34 44 54 64 74)=data4
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punpckhqdq xmm0,xmm5 ; xmm0=(05 15 25 35 45 55 65 75)=data5
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movdqa xmm2,xmm1
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movdqa xmm5,xmm7
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paddw xmm1,xmm4 ; xmm1=data3+data4=tmp3
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paddw xmm7,xmm0 ; xmm7=data2+data5=tmp2
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psubw xmm2,xmm4 ; xmm2=data3-data4=tmp4
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psubw xmm5,xmm0 ; xmm5=data2-data5=tmp5
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; -- Even part
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movdqa xmm4,xmm3
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movdqa xmm0,xmm6
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paddw xmm3,xmm1 ; xmm3=tmp10
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paddw xmm6,xmm7 ; xmm6=tmp11
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psubw xmm4,xmm1 ; xmm4=tmp13
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psubw xmm0,xmm7 ; xmm0=tmp12
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movdqa xmm1,xmm3
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paddw xmm3,xmm6 ; xmm3=tmp10+tmp11
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psubw xmm1,xmm6 ; xmm1=tmp10-tmp11
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psllw xmm3,PASS1_BITS ; xmm3=data0
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psllw xmm1,PASS1_BITS ; xmm1=data4
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movdqa XMMWORD [wk(2)], xmm3 ; wk(2)=data0
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movdqa XMMWORD [wk(3)], xmm1 ; wk(3)=data4
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; (Original)
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; z1 = (tmp12 + tmp13) * 0.541196100;
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; data2 = z1 + tmp13 * 0.765366865;
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; data6 = z1 + tmp12 * -1.847759065;
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;
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; (This implementation)
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; data2 = tmp13 * (0.541196100 + 0.765366865) + tmp12 * 0.541196100;
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; data6 = tmp13 * 0.541196100 + tmp12 * (0.541196100 - 1.847759065);
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movdqa xmm7,xmm4 ; xmm4=tmp13
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movdqa xmm6,xmm4
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punpcklwd xmm7,xmm0 ; xmm0=tmp12
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punpckhwd xmm6,xmm0
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movdqa xmm4,xmm7
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movdqa xmm0,xmm6
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pmaddwd xmm7,[GOTOFF(ebx,PW_F130_F054)] ; xmm7=data2L
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pmaddwd xmm6,[GOTOFF(ebx,PW_F130_F054)] ; xmm6=data2H
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pmaddwd xmm4,[GOTOFF(ebx,PW_F054_MF130)] ; xmm4=data6L
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pmaddwd xmm0,[GOTOFF(ebx,PW_F054_MF130)] ; xmm0=data6H
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paddd xmm7,[GOTOFF(ebx,PD_DESCALE_P1)]
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paddd xmm6,[GOTOFF(ebx,PD_DESCALE_P1)]
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psrad xmm7,DESCALE_P1
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psrad xmm6,DESCALE_P1
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paddd xmm4,[GOTOFF(ebx,PD_DESCALE_P1)]
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paddd xmm0,[GOTOFF(ebx,PD_DESCALE_P1)]
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psrad xmm4,DESCALE_P1
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psrad xmm0,DESCALE_P1
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packssdw xmm7,xmm6 ; xmm7=data2
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packssdw xmm4,xmm0 ; xmm4=data6
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movdqa XMMWORD [wk(4)], xmm7 ; wk(4)=data2
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movdqa XMMWORD [wk(5)], xmm4 ; wk(5)=data6
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; -- Odd part
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movdqa xmm3, XMMWORD [wk(0)] ; xmm3=tmp6
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movdqa xmm1, XMMWORD [wk(1)] ; xmm1=tmp7
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movdqa xmm6,xmm2 ; xmm2=tmp4
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movdqa xmm0,xmm5 ; xmm5=tmp5
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paddw xmm6,xmm3 ; xmm6=z3
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paddw xmm0,xmm1 ; xmm0=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 xmm4,xmm6
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punpcklwd xmm7,xmm0
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punpckhwd xmm4,xmm0
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movdqa xmm6,xmm7
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movdqa xmm0,xmm4
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pmaddwd xmm7,[GOTOFF(ebx,PW_MF078_F117)] ; xmm7=z3L
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pmaddwd xmm4,[GOTOFF(ebx,PW_MF078_F117)] ; xmm4=z3H
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pmaddwd xmm6,[GOTOFF(ebx,PW_F117_F078)] ; xmm6=z4L
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pmaddwd xmm0,[GOTOFF(ebx,PW_F117_F078)] ; xmm0=z4H
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movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=z3L
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movdqa XMMWORD [wk(1)], xmm4 ; wk(1)=z3H
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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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; data7 = tmp4 + z1 + z3; data5 = tmp5 + z2 + z4;
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; data3 = tmp6 + z2 + z3; data1 = 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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; data7 = tmp4 + z3; data5 = tmp5 + z4;
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; data3 = tmp6 + z3; data1 = tmp7 + z4;
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movdqa xmm7,xmm2
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movdqa xmm4,xmm2
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punpcklwd xmm7,xmm1
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punpckhwd xmm4,xmm1
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movdqa xmm2,xmm7
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movdqa xmm1,xmm4
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pmaddwd xmm7,[GOTOFF(ebx,PW_MF060_MF089)] ; xmm7=tmp4L
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pmaddwd xmm4,[GOTOFF(ebx,PW_MF060_MF089)] ; xmm4=tmp4H
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pmaddwd xmm2,[GOTOFF(ebx,PW_MF089_F060)] ; xmm2=tmp7L
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pmaddwd xmm1,[GOTOFF(ebx,PW_MF089_F060)] ; xmm1=tmp7H
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paddd xmm7, XMMWORD [wk(0)] ; xmm7=data7L
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paddd xmm4, XMMWORD [wk(1)] ; xmm4=data7H
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paddd xmm2,xmm6 ; xmm2=data1L
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paddd xmm1,xmm0 ; xmm1=data1H
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paddd xmm7,[GOTOFF(ebx,PD_DESCALE_P1)]
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paddd xmm4,[GOTOFF(ebx,PD_DESCALE_P1)]
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psrad xmm7,DESCALE_P1
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psrad xmm4,DESCALE_P1
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paddd xmm2,[GOTOFF(ebx,PD_DESCALE_P1)]
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paddd xmm1,[GOTOFF(ebx,PD_DESCALE_P1)]
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psrad xmm2,DESCALE_P1
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psrad xmm1,DESCALE_P1
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packssdw xmm7,xmm4 ; xmm7=data7
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packssdw xmm2,xmm1 ; xmm2=data1
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movdqa xmm4,xmm5
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movdqa xmm1,xmm5
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punpcklwd xmm4,xmm3
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punpckhwd xmm1,xmm3
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movdqa xmm5,xmm4
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movdqa xmm3,xmm1
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pmaddwd xmm4,[GOTOFF(ebx,PW_MF050_MF256)] ; xmm4=tmp5L
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pmaddwd xmm1,[GOTOFF(ebx,PW_MF050_MF256)] ; xmm1=tmp5H
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pmaddwd xmm5,[GOTOFF(ebx,PW_MF256_F050)] ; xmm5=tmp6L
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pmaddwd xmm3,[GOTOFF(ebx,PW_MF256_F050)] ; xmm3=tmp6H
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paddd xmm4,xmm6 ; xmm4=data5L
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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
|