зеркало из https://github.com/mozilla/pjs.git
393 строки
13 KiB
NASM
393 строки
13 KiB
NASM
;
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; jfss2fst-64.asm - fast 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 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 fast, not so accurate integer implementation of
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; the forward DCT (Discrete Cosine Transform). The following code is
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; based directly on the IJG's original jfdctfst.c; see the jfdctfst.c
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; for 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 8 ; 14 is also OK.
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%if CONST_BITS == 8
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F_0_382 equ 98 ; FIX(0.382683433)
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F_0_541 equ 139 ; FIX(0.541196100)
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F_0_707 equ 181 ; FIX(0.707106781)
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F_1_306 equ 334 ; FIX(1.306562965)
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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_382 equ DESCALE( 410903207,30-CONST_BITS) ; FIX(0.382683433)
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F_0_541 equ DESCALE( 581104887,30-CONST_BITS) ; FIX(0.541196100)
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F_0_707 equ DESCALE( 759250124,30-CONST_BITS) ; FIX(0.707106781)
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F_1_306 equ DESCALE(1402911301,30-CONST_BITS) ; FIX(1.306562965)
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%endif
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; --------------------------------------------------------------------------
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SECTION SEG_CONST
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; PRE_MULTIPLY_SCALE_BITS <= 2 (to avoid overflow)
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; CONST_BITS + CONST_SHIFT + PRE_MULTIPLY_SCALE_BITS == 16 (for pmulhw)
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%define PRE_MULTIPLY_SCALE_BITS 2
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%define CONST_SHIFT (16 - PRE_MULTIPLY_SCALE_BITS - CONST_BITS)
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alignz 16
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global EXTN(jconst_fdct_ifast_sse2)
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EXTN(jconst_fdct_ifast_sse2):
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PW_F0707 times 8 dw F_0_707 << CONST_SHIFT
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PW_F0382 times 8 dw F_0_382 << CONST_SHIFT
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PW_F0541 times 8 dw F_0_541 << CONST_SHIFT
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PW_F1306 times 8 dw F_1_306 << CONST_SHIFT
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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_ifast_sse2 (DCTELEM * data)
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;
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; r10 = DCTELEM * data
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%define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
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%define WK_NUM 2
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align 16
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global EXTN(jsimd_fdct_ifast_sse2)
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EXTN(jsimd_fdct_ifast_sse2):
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push rbp
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mov rax,rsp ; rax = original rbp
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sub rsp, byte 4
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and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
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mov [rsp],rax
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mov rbp,rsp ; rbp = aligned rbp
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lea rsp, [wk(0)]
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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 xmm0, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_DCTELEM)]
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movdqa xmm1, 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 xmm3, XMMWORD [XMMBLOCK(3,0,rdx,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,rdx,SIZEOF_DCTELEM)]
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movdqa xmm7, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_DCTELEM)]
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movdqa xmm1, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_DCTELEM)]
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movdqa xmm3, XMMWORD [XMMBLOCK(7,0,rdx,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(0)], xmm7 ; wk(0)=(42 52 62 72 43 53 63 73)
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movdqa XMMWORD [wk(1)], xmm2 ; wk(1)=(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(0)] ; xmm2=(42 52 62 72 43 53 63 73)
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movdqa xmm5, XMMWORD [wk(1)] ; 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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psubw xmm3,xmm1 ; xmm3=tmp13
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psubw xmm6,xmm7 ; xmm6=tmp12
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paddw xmm4,xmm1 ; xmm4=tmp10
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paddw xmm0,xmm7 ; xmm0=tmp11
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paddw xmm6,xmm3
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psllw xmm6,PRE_MULTIPLY_SCALE_BITS
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pmulhw xmm6,[rel PW_F0707] ; xmm6=z1
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movdqa xmm1,xmm4
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movdqa xmm7,xmm3
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psubw xmm4,xmm0 ; xmm4=data4
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psubw xmm3,xmm6 ; xmm3=data6
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paddw xmm1,xmm0 ; xmm1=data0
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paddw xmm7,xmm6 ; xmm7=data2
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movdqa xmm0, XMMWORD [wk(0)] ; xmm0=tmp6
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movdqa xmm6, XMMWORD [wk(1)] ; xmm6=tmp7
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movdqa XMMWORD [wk(0)], xmm4 ; wk(0)=data4
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movdqa XMMWORD [wk(1)], xmm3 ; wk(1)=data6
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; -- Odd part
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paddw xmm2,xmm5 ; xmm2=tmp10
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paddw xmm5,xmm0 ; xmm5=tmp11
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paddw xmm0,xmm6 ; xmm0=tmp12, xmm6=tmp7
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psllw xmm2,PRE_MULTIPLY_SCALE_BITS
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psllw xmm0,PRE_MULTIPLY_SCALE_BITS
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psllw xmm5,PRE_MULTIPLY_SCALE_BITS
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pmulhw xmm5,[rel PW_F0707] ; xmm5=z3
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movdqa xmm4,xmm2 ; xmm4=tmp10
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psubw xmm2,xmm0
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pmulhw xmm2,[rel PW_F0382] ; xmm2=z5
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pmulhw xmm4,[rel PW_F0541] ; xmm4=MULTIPLY(tmp10,FIX_0_541196)
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pmulhw xmm0,[rel PW_F1306] ; xmm0=MULTIPLY(tmp12,FIX_1_306562)
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paddw xmm4,xmm2 ; xmm4=z2
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paddw xmm0,xmm2 ; xmm0=z4
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movdqa xmm3,xmm6
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psubw xmm6,xmm5 ; xmm6=z13
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paddw xmm3,xmm5 ; xmm3=z11
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movdqa xmm2,xmm6
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movdqa xmm5,xmm3
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psubw xmm6,xmm4 ; xmm6=data3
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psubw xmm3,xmm0 ; xmm3=data7
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paddw xmm2,xmm4 ; xmm2=data5
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paddw xmm5,xmm0 ; xmm5=data1
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; ---- Pass 2: process columns.
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; xmm1=(00 10 20 30 40 50 60 70), xmm7=(02 12 22 32 42 52 62 72)
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; xmm5=(01 11 21 31 41 51 61 71), xmm6=(03 13 23 33 43 53 63 73)
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movdqa xmm4,xmm1 ; transpose coefficients(phase 1)
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punpcklwd xmm1,xmm5 ; xmm1=(00 01 10 11 20 21 30 31)
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punpckhwd xmm4,xmm5 ; xmm4=(40 41 50 51 60 61 70 71)
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movdqa xmm0,xmm7 ; transpose coefficients(phase 1)
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punpcklwd xmm7,xmm6 ; xmm7=(02 03 12 13 22 23 32 33)
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punpckhwd xmm0,xmm6 ; xmm0=(42 43 52 53 62 63 72 73)
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movdqa xmm5, XMMWORD [wk(0)] ; xmm5=col4
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movdqa xmm6, XMMWORD [wk(1)] ; xmm6=col6
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; xmm5=(04 14 24 34 44 54 64 74), xmm6=(06 16 26 36 46 56 66 76)
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; xmm2=(05 15 25 35 45 55 65 75), xmm3=(07 17 27 37 47 57 67 77)
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movdqa XMMWORD [wk(0)], xmm7 ; wk(0)=(02 03 12 13 22 23 32 33)
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movdqa XMMWORD [wk(1)], xmm0 ; wk(1)=(42 43 52 53 62 63 72 73)
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movdqa xmm7,xmm5 ; transpose coefficients(phase 1)
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punpcklwd xmm5,xmm2 ; xmm5=(04 05 14 15 24 25 34 35)
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punpckhwd xmm7,xmm2 ; xmm7=(44 45 54 55 64 65 74 75)
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movdqa xmm0,xmm6 ; transpose coefficients(phase 1)
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punpcklwd xmm6,xmm3 ; xmm6=(06 07 16 17 26 27 36 37)
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punpckhwd xmm0,xmm3 ; xmm0=(46 47 56 57 66 67 76 77)
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movdqa xmm2,xmm5 ; transpose coefficients(phase 2)
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punpckldq xmm5,xmm6 ; xmm5=(04 05 06 07 14 15 16 17)
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punpckhdq xmm2,xmm6 ; xmm2=(24 25 26 27 34 35 36 37)
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movdqa xmm3,xmm7 ; transpose coefficients(phase 2)
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punpckldq xmm7,xmm0 ; xmm7=(44 45 46 47 54 55 56 57)
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punpckhdq xmm3,xmm0 ; xmm3=(64 65 66 67 74 75 76 77)
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movdqa xmm6, XMMWORD [wk(0)] ; xmm6=(02 03 12 13 22 23 32 33)
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movdqa xmm0, XMMWORD [wk(1)] ; xmm0=(42 43 52 53 62 63 72 73)
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movdqa XMMWORD [wk(0)], xmm2 ; wk(0)=(24 25 26 27 34 35 36 37)
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movdqa XMMWORD [wk(1)], xmm7 ; wk(1)=(44 45 46 47 54 55 56 57)
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movdqa xmm2,xmm1 ; transpose coefficients(phase 2)
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punpckldq xmm1,xmm6 ; xmm1=(00 01 02 03 10 11 12 13)
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punpckhdq xmm2,xmm6 ; xmm2=(20 21 22 23 30 31 32 33)
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movdqa xmm7,xmm4 ; transpose coefficients(phase 2)
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punpckldq xmm4,xmm0 ; xmm4=(40 41 42 43 50 51 52 53)
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punpckhdq xmm7,xmm0 ; xmm7=(60 61 62 63 70 71 72 73)
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movdqa xmm6,xmm1 ; transpose coefficients(phase 3)
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punpcklqdq xmm1,xmm5 ; xmm1=(00 01 02 03 04 05 06 07)=data0
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punpckhqdq xmm6,xmm5 ; xmm6=(10 11 12 13 14 15 16 17)=data1
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movdqa xmm0,xmm7 ; transpose coefficients(phase 3)
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punpcklqdq xmm7,xmm3 ; xmm7=(60 61 62 63 64 65 66 67)=data6
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punpckhqdq xmm0,xmm3 ; xmm0=(70 71 72 73 74 75 76 77)=data7
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movdqa xmm5,xmm6
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movdqa xmm3,xmm1
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psubw xmm6,xmm7 ; xmm6=data1-data6=tmp6
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psubw xmm1,xmm0 ; xmm1=data0-data7=tmp7
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paddw xmm5,xmm7 ; xmm5=data1+data6=tmp1
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paddw xmm3,xmm0 ; xmm3=data0+data7=tmp0
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movdqa xmm7, XMMWORD [wk(0)] ; xmm7=(24 25 26 27 34 35 36 37)
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movdqa xmm0, XMMWORD [wk(1)] ; xmm0=(44 45 46 47 54 55 56 57)
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movdqa XMMWORD [wk(0)], xmm6 ; wk(0)=tmp6
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movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=tmp7
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movdqa xmm6,xmm2 ; transpose coefficients(phase 3)
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punpcklqdq xmm2,xmm7 ; xmm2=(20 21 22 23 24 25 26 27)=data2
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punpckhqdq xmm6,xmm7 ; xmm6=(30 31 32 33 34 35 36 37)=data3
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movdqa xmm1,xmm4 ; transpose coefficients(phase 3)
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punpcklqdq xmm4,xmm0 ; xmm4=(40 41 42 43 44 45 46 47)=data4
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punpckhqdq xmm1,xmm0 ; xmm1=(50 51 52 53 54 55 56 57)=data5
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movdqa xmm7,xmm6
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movdqa xmm0,xmm2
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paddw xmm6,xmm4 ; xmm6=data3+data4=tmp3
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paddw xmm2,xmm1 ; xmm2=data2+data5=tmp2
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psubw xmm7,xmm4 ; xmm7=data3-data4=tmp4
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psubw xmm0,xmm1 ; xmm0=data2-data5=tmp5
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; -- Even part
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movdqa xmm4,xmm3
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movdqa xmm1,xmm5
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psubw xmm3,xmm6 ; xmm3=tmp13
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psubw xmm5,xmm2 ; xmm5=tmp12
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paddw xmm4,xmm6 ; xmm4=tmp10
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paddw xmm1,xmm2 ; xmm1=tmp11
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paddw xmm5,xmm3
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psllw xmm5,PRE_MULTIPLY_SCALE_BITS
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pmulhw xmm5,[rel PW_F0707] ; xmm5=z1
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movdqa xmm6,xmm4
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movdqa xmm2,xmm3
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psubw xmm4,xmm1 ; xmm4=data4
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psubw xmm3,xmm5 ; xmm3=data6
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paddw xmm6,xmm1 ; xmm6=data0
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paddw xmm2,xmm5 ; xmm2=data2
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movdqa XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_DCTELEM)], xmm4
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movdqa XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_DCTELEM)], xmm3
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movdqa XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_DCTELEM)], xmm6
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movdqa XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_DCTELEM)], xmm2
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; -- Odd part
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movdqa xmm1, XMMWORD [wk(0)] ; xmm1=tmp6
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movdqa xmm5, XMMWORD [wk(1)] ; xmm5=tmp7
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paddw xmm7,xmm0 ; xmm7=tmp10
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paddw xmm0,xmm1 ; xmm0=tmp11
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paddw xmm1,xmm5 ; xmm1=tmp12, xmm5=tmp7
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psllw xmm7,PRE_MULTIPLY_SCALE_BITS
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psllw xmm1,PRE_MULTIPLY_SCALE_BITS
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psllw xmm0,PRE_MULTIPLY_SCALE_BITS
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pmulhw xmm0,[rel PW_F0707] ; xmm0=z3
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movdqa xmm4,xmm7 ; xmm4=tmp10
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psubw xmm7,xmm1
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pmulhw xmm7,[rel PW_F0382] ; xmm7=z5
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pmulhw xmm4,[rel PW_F0541] ; xmm4=MULTIPLY(tmp10,FIX_0_541196)
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pmulhw xmm1,[rel PW_F1306] ; xmm1=MULTIPLY(tmp12,FIX_1_306562)
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paddw xmm4,xmm7 ; xmm4=z2
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paddw xmm1,xmm7 ; xmm1=z4
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movdqa xmm3,xmm5
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psubw xmm5,xmm0 ; xmm5=z13
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paddw xmm3,xmm0 ; xmm3=z11
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movdqa xmm6,xmm5
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movdqa xmm2,xmm3
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psubw xmm5,xmm4 ; xmm5=data3
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psubw xmm3,xmm1 ; xmm3=data7
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paddw xmm6,xmm4 ; xmm6=data5
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paddw xmm2,xmm1 ; xmm2=data1
|
|
|
|
movdqa XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_DCTELEM)], xmm5
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movdqa XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_DCTELEM)], xmm3
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|
movdqa XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_DCTELEM)], xmm6
|
|
movdqa XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_DCTELEM)], xmm2
|
|
|
|
uncollect_args
|
|
mov rsp,rbp ; rsp <- aligned rbp
|
|
pop rsp ; rsp <- original rbp
|
|
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
|