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1
by Tom Gall
initial import based on mandeeps git tree and my packaging |
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;
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; jfsseflt-64.asm - floating-point FDCT (64-bit SSE)
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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 floating-point implementation of the forward DCT
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; (Discrete Cosine Transform). The following code is based directly on
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; the IJG's original jfdctflt.c; see the jfdctflt.c 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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%macro unpcklps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(0 1 4 5) |
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shufps %1,%2,0x44 |
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%endmacro
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%macro unpckhps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(2 3 6 7) |
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shufps %1,%2,0xEE |
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%endmacro
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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_float_sse) |
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EXTN(jconst_fdct_float_sse): |
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PD_0_382 times 4 dd 0.382683432365089771728460 |
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PD_0_707 times 4 dd 0.707106781186547524400844 |
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PD_0_541 times 4 dd 0.541196100146196984399723 |
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PD_1_306 times 4 dd 1.306562964876376527856643 |
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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_float_sse (FAST_FLOAT * data)
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;
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; r10 = FAST_FLOAT * 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_float_sse) |
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EXTN(jsimd_fdct_float_sse): |
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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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81 |
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mov rdx, r10 ; (FAST_FLOAT *) |
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mov rcx, DCTSIZE/4 |
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.rowloop:
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85 |
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movaps xmm0, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)] |
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movaps xmm1, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)] |
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movaps xmm2, XMMWORD [XMMBLOCK(2,1,rdx,SIZEOF_FAST_FLOAT)] |
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movaps xmm3, XMMWORD [XMMBLOCK(3,1,rdx,SIZEOF_FAST_FLOAT)] |
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; xmm0=(20 21 22 23), xmm2=(24 25 26 27)
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; xmm1=(30 31 32 33), xmm3=(34 35 36 37)
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movaps xmm4,xmm0 ; transpose coefficients(phase 1) |
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unpcklps xmm0,xmm1 ; xmm0=(20 30 21 31) |
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unpckhps xmm4,xmm1 ; xmm4=(22 32 23 33) |
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movaps xmm5,xmm2 ; transpose coefficients(phase 1) |
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unpcklps xmm2,xmm3 ; xmm2=(24 34 25 35) |
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unpckhps xmm5,xmm3 ; xmm5=(26 36 27 37) |
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101 |
movaps xmm6, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)] |
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movaps xmm7, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)] |
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movaps xmm1, XMMWORD [XMMBLOCK(0,1,rdx,SIZEOF_FAST_FLOAT)] |
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movaps xmm3, XMMWORD [XMMBLOCK(1,1,rdx,SIZEOF_FAST_FLOAT)] |
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; xmm6=(00 01 02 03), xmm1=(04 05 06 07)
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; xmm7=(10 11 12 13), xmm3=(14 15 16 17)
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movaps XMMWORD [wk(0)], xmm4 ; wk(0)=(22 32 23 33) |
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movaps XMMWORD [wk(1)], xmm2 ; wk(1)=(24 34 25 35) |
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movaps xmm4,xmm6 ; transpose coefficients(phase 1) |
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unpcklps xmm6,xmm7 ; xmm6=(00 10 01 11) |
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unpckhps xmm4,xmm7 ; xmm4=(02 12 03 13) |
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movaps xmm2,xmm1 ; transpose coefficients(phase 1) |
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unpcklps xmm1,xmm3 ; xmm1=(04 14 05 15) |
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unpckhps xmm2,xmm3 ; xmm2=(06 16 07 17) |
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movaps xmm7,xmm6 ; transpose coefficients(phase 2) |
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unpcklps2 xmm6,xmm0 ; xmm6=(00 10 20 30)=data0 |
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unpckhps2 xmm7,xmm0 ; xmm7=(01 11 21 31)=data1 |
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movaps xmm3,xmm2 ; transpose coefficients(phase 2) |
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unpcklps2 xmm2,xmm5 ; xmm2=(06 16 26 36)=data6 |
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unpckhps2 xmm3,xmm5 ; xmm3=(07 17 27 37)=data7 |
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movaps xmm0,xmm7 |
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movaps xmm5,xmm6 |
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subps xmm7,xmm2 ; xmm7=data1-data6=tmp6 |
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subps xmm6,xmm3 ; xmm6=data0-data7=tmp7 |
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addps xmm0,xmm2 ; xmm0=data1+data6=tmp1 |
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addps xmm5,xmm3 ; xmm5=data0+data7=tmp0 |
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movaps xmm2, XMMWORD [wk(0)] ; xmm2=(22 32 23 33) |
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movaps xmm3, XMMWORD [wk(1)] ; xmm3=(24 34 25 35) |
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movaps XMMWORD [wk(0)], xmm7 ; wk(0)=tmp6 |
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movaps XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7 |
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movaps xmm7,xmm4 ; transpose coefficients(phase 2) |
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unpcklps2 xmm4,xmm2 ; xmm4=(02 12 22 32)=data2 |
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unpckhps2 xmm7,xmm2 ; xmm7=(03 13 23 33)=data3 |
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movaps xmm6,xmm1 ; transpose coefficients(phase 2) |
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unpcklps2 xmm1,xmm3 ; xmm1=(04 14 24 34)=data4 |
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unpckhps2 xmm6,xmm3 ; xmm6=(05 15 25 35)=data5 |
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movaps xmm2,xmm7 |
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movaps xmm3,xmm4 |
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addps xmm7,xmm1 ; xmm7=data3+data4=tmp3 |
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addps xmm4,xmm6 ; xmm4=data2+data5=tmp2 |
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subps xmm2,xmm1 ; xmm2=data3-data4=tmp4 |
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subps xmm3,xmm6 ; xmm3=data2-data5=tmp5 |
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; -- Even part
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153 |
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movaps xmm1,xmm5 |
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movaps xmm6,xmm0 |
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subps xmm5,xmm7 ; xmm5=tmp13 |
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subps xmm0,xmm4 ; xmm0=tmp12 |
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addps xmm1,xmm7 ; xmm1=tmp10 |
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addps xmm6,xmm4 ; xmm6=tmp11 |
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160 |
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addps xmm0,xmm5 |
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mulps xmm0,[rel PD_0_707] ; xmm0=z1 |
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movaps xmm7,xmm1 |
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movaps xmm4,xmm5 |
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subps xmm1,xmm6 ; xmm1=data4 |
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subps xmm5,xmm0 ; xmm5=data6 |
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addps xmm7,xmm6 ; xmm7=data0 |
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addps xmm4,xmm0 ; xmm4=data2 |
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170 |
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movaps XMMWORD [XMMBLOCK(0,1,rdx,SIZEOF_FAST_FLOAT)], xmm1 |
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movaps XMMWORD [XMMBLOCK(2,1,rdx,SIZEOF_FAST_FLOAT)], xmm5 |
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movaps XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)], xmm7 |
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movaps XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)], xmm4 |
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175 |
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; -- Odd part
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177 |
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movaps xmm6, XMMWORD [wk(0)] ; xmm6=tmp6 |
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movaps xmm0, XMMWORD [wk(1)] ; xmm0=tmp7 |
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180 |
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addps xmm2,xmm3 ; xmm2=tmp10 |
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addps xmm3,xmm6 ; xmm3=tmp11 |
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addps xmm6,xmm0 ; xmm6=tmp12, xmm0=tmp7 |
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184 |
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mulps xmm3,[rel PD_0_707] ; xmm3=z3 |
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186 |
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movaps xmm1,xmm2 ; xmm1=tmp10 |
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subps xmm2,xmm6 |
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mulps xmm2,[rel PD_0_382] ; xmm2=z5 |
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mulps xmm1,[rel PD_0_541] ; xmm1=MULTIPLY(tmp10,FIX_0_541196) |
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mulps xmm6,[rel PD_1_306] ; xmm6=MULTIPLY(tmp12,FIX_1_306562) |
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addps xmm1,xmm2 ; xmm1=z2 |
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addps xmm6,xmm2 ; xmm6=z4 |
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movaps xmm5,xmm0 |
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subps xmm0,xmm3 ; xmm0=z13 |
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addps xmm5,xmm3 ; xmm5=z11 |
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movaps xmm7,xmm0 |
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movaps xmm4,xmm5 |
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subps xmm0,xmm1 ; xmm0=data3 |
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subps xmm5,xmm6 ; xmm5=data7 |
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addps xmm7,xmm1 ; xmm7=data5 |
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addps xmm4,xmm6 ; xmm4=data1 |
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movaps XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)], xmm0 |
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movaps XMMWORD [XMMBLOCK(3,1,rdx,SIZEOF_FAST_FLOAT)], xmm5 |
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movaps XMMWORD [XMMBLOCK(1,1,rdx,SIZEOF_FAST_FLOAT)], xmm7 |
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movaps XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)], xmm4 |
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210 |
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add rdx, 4*DCTSIZE*SIZEOF_FAST_FLOAT |
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dec rcx |
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jnz near .rowloop |
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214 |
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; ---- Pass 2: process columns.
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216 |
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mov rdx, r10 ; (FAST_FLOAT *) |
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mov rcx, DCTSIZE/4 |
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.columnloop:
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movaps xmm0, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)] |
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movaps xmm1, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)] |
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movaps xmm2, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_FAST_FLOAT)] |
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movaps xmm3, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_FAST_FLOAT)] |
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; xmm0=(02 12 22 32), xmm2=(42 52 62 72)
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; xmm1=(03 13 23 33), xmm3=(43 53 63 73)
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movaps xmm4,xmm0 ; transpose coefficients(phase 1) |
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unpcklps xmm0,xmm1 ; xmm0=(02 03 12 13) |
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unpckhps xmm4,xmm1 ; xmm4=(22 23 32 33) |
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movaps xmm5,xmm2 ; transpose coefficients(phase 1) |
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unpcklps xmm2,xmm3 ; xmm2=(42 43 52 53) |
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unpckhps xmm5,xmm3 ; xmm5=(62 63 72 73) |
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movaps xmm6, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)] |
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movaps xmm7, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)] |
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movaps xmm1, XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_FAST_FLOAT)] |
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movaps xmm3, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_FAST_FLOAT)] |
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240 |
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; xmm6=(00 10 20 30), xmm1=(40 50 60 70)
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; xmm7=(01 11 21 31), xmm3=(41 51 61 71)
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244 |
movaps XMMWORD [wk(0)], xmm4 ; wk(0)=(22 23 32 33) |
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movaps XMMWORD [wk(1)], xmm2 ; wk(1)=(42 43 52 53) |
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246 |
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247 |
movaps xmm4,xmm6 ; transpose coefficients(phase 1) |
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248 |
unpcklps xmm6,xmm7 ; xmm6=(00 01 10 11) |
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249 |
unpckhps xmm4,xmm7 ; xmm4=(20 21 30 31) |
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250 |
movaps xmm2,xmm1 ; transpose coefficients(phase 1) |
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unpcklps xmm1,xmm3 ; xmm1=(40 41 50 51) |
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252 |
unpckhps xmm2,xmm3 ; xmm2=(60 61 70 71) |
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253 |
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254 |
movaps xmm7,xmm6 ; transpose coefficients(phase 2) |
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255 |
unpcklps2 xmm6,xmm0 ; xmm6=(00 01 02 03)=data0 |
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256 |
unpckhps2 xmm7,xmm0 ; xmm7=(10 11 12 13)=data1 |
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257 |
movaps xmm3,xmm2 ; transpose coefficients(phase 2) |
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258 |
unpcklps2 xmm2,xmm5 ; xmm2=(60 61 62 63)=data6 |
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259 |
unpckhps2 xmm3,xmm5 ; xmm3=(70 71 72 73)=data7 |
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260 |
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261 |
movaps xmm0,xmm7 |
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262 |
movaps xmm5,xmm6 |
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263 |
subps xmm7,xmm2 ; xmm7=data1-data6=tmp6 |
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264 |
subps xmm6,xmm3 ; xmm6=data0-data7=tmp7 |
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265 |
addps xmm0,xmm2 ; xmm0=data1+data6=tmp1 |
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266 |
addps xmm5,xmm3 ; xmm5=data0+data7=tmp0 |
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267 |
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268 |
movaps xmm2, XMMWORD [wk(0)] ; xmm2=(22 23 32 33) |
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269 |
movaps xmm3, XMMWORD [wk(1)] ; xmm3=(42 43 52 53) |
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270 |
movaps XMMWORD [wk(0)], xmm7 ; wk(0)=tmp6 |
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271 |
movaps XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7 |
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272 |
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273 |
movaps xmm7,xmm4 ; transpose coefficients(phase 2) |
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274 |
unpcklps2 xmm4,xmm2 ; xmm4=(20 21 22 23)=data2 |
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275 |
unpckhps2 xmm7,xmm2 ; xmm7=(30 31 32 33)=data3 |
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276 |
movaps xmm6,xmm1 ; transpose coefficients(phase 2) |
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277 |
unpcklps2 xmm1,xmm3 ; xmm1=(40 41 42 43)=data4 |
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278 |
unpckhps2 xmm6,xmm3 ; xmm6=(50 51 52 53)=data5 |
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279 |
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280 |
movaps xmm2,xmm7 |
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281 |
movaps xmm3,xmm4 |
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282 |
addps xmm7,xmm1 ; xmm7=data3+data4=tmp3 |
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283 |
addps xmm4,xmm6 ; xmm4=data2+data5=tmp2 |
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284 |
subps xmm2,xmm1 ; xmm2=data3-data4=tmp4 |
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285 |
subps xmm3,xmm6 ; xmm3=data2-data5=tmp5 |
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286 |
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287 |
; -- Even part
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288 |
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289 |
movaps xmm1,xmm5 |
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290 |
movaps xmm6,xmm0 |
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291 |
subps xmm5,xmm7 ; xmm5=tmp13 |
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292 |
subps xmm0,xmm4 ; xmm0=tmp12 |
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293 |
addps xmm1,xmm7 ; xmm1=tmp10 |
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294 |
addps xmm6,xmm4 ; xmm6=tmp11 |
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295 |
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296 |
addps xmm0,xmm5 |
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297 |
mulps xmm0,[rel PD_0_707] ; xmm0=z1 |
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298 |
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299 |
movaps xmm7,xmm1 |
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300 |
movaps xmm4,xmm5 |
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301 |
subps xmm1,xmm6 ; xmm1=data4 |
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302 |
subps xmm5,xmm0 ; xmm5=data6 |
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303 |
addps xmm7,xmm6 ; xmm7=data0 |
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304 |
addps xmm4,xmm0 ; xmm4=data2 |
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305 |
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306 |
movaps XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_FAST_FLOAT)], xmm1 |
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307 |
movaps XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_FAST_FLOAT)], xmm5 |
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308 |
movaps XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)], xmm7 |
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309 |
movaps XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)], xmm4 |
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310 |
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311 |
; -- Odd part
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312 |
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313 |
movaps xmm6, XMMWORD [wk(0)] ; xmm6=tmp6 |
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314 |
movaps xmm0, XMMWORD [wk(1)] ; xmm0=tmp7 |
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315 |
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316 |
addps xmm2,xmm3 ; xmm2=tmp10 |
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317 |
addps xmm3,xmm6 ; xmm3=tmp11 |
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318 |
addps xmm6,xmm0 ; xmm6=tmp12, xmm0=tmp7 |
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319 |
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320 |
mulps xmm3,[rel PD_0_707] ; xmm3=z3 |
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321 |
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322 |
movaps xmm1,xmm2 ; xmm1=tmp10 |
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323 |
subps xmm2,xmm6 |
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324 |
mulps xmm2,[rel PD_0_382] ; xmm2=z5 |
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325 |
mulps xmm1,[rel PD_0_541] ; xmm1=MULTIPLY(tmp10,FIX_0_541196) |
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326 |
mulps xmm6,[rel PD_1_306] ; xmm6=MULTIPLY(tmp12,FIX_1_306562) |
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327 |
addps xmm1,xmm2 ; xmm1=z2 |
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328 |
addps xmm6,xmm2 ; xmm6=z4 |
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329 |
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330 |
movaps xmm5,xmm0 |
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331 |
subps xmm0,xmm3 ; xmm0=z13 |
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332 |
addps xmm5,xmm3 ; xmm5=z11 |
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333 |
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334 |
movaps xmm7,xmm0 |
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335 |
movaps xmm4,xmm5 |
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336 |
subps xmm0,xmm1 ; xmm0=data3 |
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337 |
subps xmm5,xmm6 ; xmm5=data7 |
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338 |
addps xmm7,xmm1 ; xmm7=data5 |
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339 |
addps xmm4,xmm6 ; xmm4=data1 |
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340 |
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341 |
movaps XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)], xmm0 |
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342 |
movaps XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_FAST_FLOAT)], xmm5 |
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343 |
movaps XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_FAST_FLOAT)], xmm7 |
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344 |
movaps XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)], xmm4 |
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345 |
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346 |
add rdx, byte 4*SIZEOF_FAST_FLOAT |
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347 |
dec rcx |
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348 |
jnz near .columnloop |
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349 |
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350 |
uncollect_args
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351 |
mov rsp,rbp ; rsp <- aligned rbp |
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352 |
pop rsp ; rsp <- original rbp |
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353 |
pop rbp |
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354 |
ret
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355 |
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356 |
; For some reason, the OS X linker does not honor the request to align the
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357 |
; segment unless we do this.
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|
358 |
align 16 |