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mozjpeg/simd/jfdctflt-sse-64.asm
DRC 123f7258a8 Format copyright headers more consistently 
The IJG convention is to format copyright notices as:

Copyright (C) YYYY, Owner.

We try to maintain this convention for any code that is part of the
libjpeg API library (with the exception of preserving the copyright
notices from Cendio's code verbatim, since those predate
libjpeg-turbo.)

Note that the phrase "All Rights Reserved" is no longer necessary, since
all Buenos Aires Convention signatories signed onto the Berne Convention
in 2000.  However, our convention is to retain this phrase for any files
that have a self-contained copyright header but to leave it off of any
files that refer to another file for conditions of distribution and use.
For instance, all of the non-SIMD files in the libjpeg API library refer
to README.ijg, and the copyright message in that file contains "All
Rights Reserved", so it is unnecessary to add it to the individual
files.

The TurboJPEG code retains my preferred formatting convention for
copyright notices, which is based on that of VirtualGL (where the
TurboJPEG API originated.)
2016-05-28 19:16:58 -05:00

358 lines
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NASM
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;
; jfdctflt.asm - floating-point FDCT (64-bit SSE)
;
; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
; Copyright (C) 2009, D. R. Commander.
;
; Based on the x86 SIMD extension for IJG JPEG library
; Copyright (C) 1999-2006, MIYASAKA Masaru.
; For conditions of distribution and use, see copyright notice in jsimdext.inc
;
; This file should be assembled with NASM (Netwide Assembler),
; can *not* be assembled with Microsoft's MASM or any compatible
; assembler (including Borland's Turbo Assembler).
; NASM is available from http://nasm.sourceforge.net/ or
; http://sourceforge.net/project/showfiles.php?group_id=6208
;
; This file contains a floating-point implementation of the forward DCT
; (Discrete Cosine Transform). The following code is based directly on
; the IJG's original jfdctflt.c; see the jfdctflt.c for more details.
;
; [TAB8]
%include "jsimdext.inc"
%include "jdct.inc"
; --------------------------------------------------------------------------
%macro unpcklps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(0 1 4 5)
shufps %1,%2,0x44
%endmacro
%macro unpckhps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(2 3 6 7)
shufps %1,%2,0xEE
%endmacro
; --------------------------------------------------------------------------
SECTION SEG_CONST
alignz 16
global EXTN(jconst_fdct_float_sse)
EXTN(jconst_fdct_float_sse):
PD_0_382 times 4 dd 0.382683432365089771728460
PD_0_707 times 4 dd 0.707106781186547524400844
PD_0_541 times 4 dd 0.541196100146196984399723
PD_1_306 times 4 dd 1.306562964876376527856643
alignz 16
; --------------------------------------------------------------------------
SECTION SEG_TEXT
BITS 64
;
; Perform the forward DCT on one block of samples.
;
; GLOBAL(void)
; jsimd_fdct_float_sse (FAST_FLOAT *data)
;
; r10 = FAST_FLOAT *data
%define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
%define WK_NUM 2
align 16
global EXTN(jsimd_fdct_float_sse)
EXTN(jsimd_fdct_float_sse):
push rbp
mov rax,rsp ; rax = original rbp
sub rsp, byte 4
and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
mov [rsp],rax
mov rbp,rsp ; rbp = aligned rbp
lea rsp, [wk(0)]
collect_args
; ---- Pass 1: process rows.
mov rdx, r10 ; (FAST_FLOAT *)
mov rcx, DCTSIZE/4
.rowloop:
movaps xmm0, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)]
movaps xmm1, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)]
movaps xmm2, XMMWORD [XMMBLOCK(2,1,rdx,SIZEOF_FAST_FLOAT)]
movaps xmm3, XMMWORD [XMMBLOCK(3,1,rdx,SIZEOF_FAST_FLOAT)]
; xmm0=(20 21 22 23), xmm2=(24 25 26 27)
; xmm1=(30 31 32 33), xmm3=(34 35 36 37)
movaps xmm4,xmm0 ; transpose coefficients(phase 1)
unpcklps xmm0,xmm1 ; xmm0=(20 30 21 31)
unpckhps xmm4,xmm1 ; xmm4=(22 32 23 33)
movaps xmm5,xmm2 ; transpose coefficients(phase 1)
unpcklps xmm2,xmm3 ; xmm2=(24 34 25 35)
unpckhps xmm5,xmm3 ; xmm5=(26 36 27 37)
movaps xmm6, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)]
movaps xmm7, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)]
movaps xmm1, XMMWORD [XMMBLOCK(0,1,rdx,SIZEOF_FAST_FLOAT)]
movaps xmm3, XMMWORD [XMMBLOCK(1,1,rdx,SIZEOF_FAST_FLOAT)]
; xmm6=(00 01 02 03), xmm1=(04 05 06 07)
; xmm7=(10 11 12 13), xmm3=(14 15 16 17)
movaps XMMWORD [wk(0)], xmm4 ; wk(0)=(22 32 23 33)
movaps XMMWORD [wk(1)], xmm2 ; wk(1)=(24 34 25 35)
movaps xmm4,xmm6 ; transpose coefficients(phase 1)
unpcklps xmm6,xmm7 ; xmm6=(00 10 01 11)
unpckhps xmm4,xmm7 ; xmm4=(02 12 03 13)
movaps xmm2,xmm1 ; transpose coefficients(phase 1)
unpcklps xmm1,xmm3 ; xmm1=(04 14 05 15)
unpckhps xmm2,xmm3 ; xmm2=(06 16 07 17)
movaps xmm7,xmm6 ; transpose coefficients(phase 2)
unpcklps2 xmm6,xmm0 ; xmm6=(00 10 20 30)=data0
unpckhps2 xmm7,xmm0 ; xmm7=(01 11 21 31)=data1
movaps xmm3,xmm2 ; transpose coefficients(phase 2)
unpcklps2 xmm2,xmm5 ; xmm2=(06 16 26 36)=data6
unpckhps2 xmm3,xmm5 ; xmm3=(07 17 27 37)=data7
movaps xmm0,xmm7
movaps xmm5,xmm6
subps xmm7,xmm2 ; xmm7=data1-data6=tmp6
subps xmm6,xmm3 ; xmm6=data0-data7=tmp7
addps xmm0,xmm2 ; xmm0=data1+data6=tmp1
addps xmm5,xmm3 ; xmm5=data0+data7=tmp0
movaps xmm2, XMMWORD [wk(0)] ; xmm2=(22 32 23 33)
movaps xmm3, XMMWORD [wk(1)] ; xmm3=(24 34 25 35)
movaps XMMWORD [wk(0)], xmm7 ; wk(0)=tmp6
movaps XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7
movaps xmm7,xmm4 ; transpose coefficients(phase 2)
unpcklps2 xmm4,xmm2 ; xmm4=(02 12 22 32)=data2
unpckhps2 xmm7,xmm2 ; xmm7=(03 13 23 33)=data3
movaps xmm6,xmm1 ; transpose coefficients(phase 2)
unpcklps2 xmm1,xmm3 ; xmm1=(04 14 24 34)=data4
unpckhps2 xmm6,xmm3 ; xmm6=(05 15 25 35)=data5
movaps xmm2,xmm7
movaps xmm3,xmm4
addps xmm7,xmm1 ; xmm7=data3+data4=tmp3
addps xmm4,xmm6 ; xmm4=data2+data5=tmp2
subps xmm2,xmm1 ; xmm2=data3-data4=tmp4
subps xmm3,xmm6 ; xmm3=data2-data5=tmp5
; -- Even part
movaps xmm1,xmm5
movaps xmm6,xmm0
subps xmm5,xmm7 ; xmm5=tmp13
subps xmm0,xmm4 ; xmm0=tmp12
addps xmm1,xmm7 ; xmm1=tmp10
addps xmm6,xmm4 ; xmm6=tmp11
addps xmm0,xmm5
mulps xmm0,[rel PD_0_707] ; xmm0=z1
movaps xmm7,xmm1
movaps xmm4,xmm5
subps xmm1,xmm6 ; xmm1=data4
subps xmm5,xmm0 ; xmm5=data6
addps xmm7,xmm6 ; xmm7=data0
addps xmm4,xmm0 ; xmm4=data2
movaps XMMWORD [XMMBLOCK(0,1,rdx,SIZEOF_FAST_FLOAT)], xmm1
movaps XMMWORD [XMMBLOCK(2,1,rdx,SIZEOF_FAST_FLOAT)], xmm5
movaps XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)], xmm7
movaps XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)], xmm4
; -- Odd part
movaps xmm6, XMMWORD [wk(0)] ; xmm6=tmp6
movaps xmm0, XMMWORD [wk(1)] ; xmm0=tmp7
addps xmm2,xmm3 ; xmm2=tmp10
addps xmm3,xmm6 ; xmm3=tmp11
addps xmm6,xmm0 ; xmm6=tmp12, xmm0=tmp7
mulps xmm3,[rel PD_0_707] ; xmm3=z3
movaps xmm1,xmm2 ; xmm1=tmp10
subps xmm2,xmm6
mulps xmm2,[rel PD_0_382] ; xmm2=z5
mulps xmm1,[rel PD_0_541] ; xmm1=MULTIPLY(tmp10,FIX_0_541196)
mulps xmm6,[rel PD_1_306] ; xmm6=MULTIPLY(tmp12,FIX_1_306562)
addps xmm1,xmm2 ; xmm1=z2
addps xmm6,xmm2 ; xmm6=z4
movaps xmm5,xmm0
subps xmm0,xmm3 ; xmm0=z13
addps xmm5,xmm3 ; xmm5=z11
movaps xmm7,xmm0
movaps xmm4,xmm5
subps xmm0,xmm1 ; xmm0=data3
subps xmm5,xmm6 ; xmm5=data7
addps xmm7,xmm1 ; xmm7=data5
addps xmm4,xmm6 ; xmm4=data1
movaps XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)], xmm0
movaps XMMWORD [XMMBLOCK(3,1,rdx,SIZEOF_FAST_FLOAT)], xmm5
movaps XMMWORD [XMMBLOCK(1,1,rdx,SIZEOF_FAST_FLOAT)], xmm7
movaps XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)], xmm4
add rdx, 4*DCTSIZE*SIZEOF_FAST_FLOAT
dec rcx
jnz near .rowloop
; ---- Pass 2: process columns.
mov rdx, r10 ; (FAST_FLOAT *)
mov rcx, DCTSIZE/4
.columnloop:
movaps xmm0, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)]
movaps xmm1, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)]
movaps xmm2, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_FAST_FLOAT)]
movaps xmm3, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_FAST_FLOAT)]
; xmm0=(02 12 22 32), xmm2=(42 52 62 72)
; xmm1=(03 13 23 33), xmm3=(43 53 63 73)
movaps xmm4,xmm0 ; transpose coefficients(phase 1)
unpcklps xmm0,xmm1 ; xmm0=(02 03 12 13)
unpckhps xmm4,xmm1 ; xmm4=(22 23 32 33)
movaps xmm5,xmm2 ; transpose coefficients(phase 1)
unpcklps xmm2,xmm3 ; xmm2=(42 43 52 53)
unpckhps xmm5,xmm3 ; xmm5=(62 63 72 73)
movaps xmm6, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)]
movaps xmm7, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)]
movaps xmm1, XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_FAST_FLOAT)]
movaps xmm3, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_FAST_FLOAT)]
; xmm6=(00 10 20 30), xmm1=(40 50 60 70)
; xmm7=(01 11 21 31), xmm3=(41 51 61 71)
movaps XMMWORD [wk(0)], xmm4 ; wk(0)=(22 23 32 33)
movaps XMMWORD [wk(1)], xmm2 ; wk(1)=(42 43 52 53)
movaps xmm4,xmm6 ; transpose coefficients(phase 1)
unpcklps xmm6,xmm7 ; xmm6=(00 01 10 11)
unpckhps xmm4,xmm7 ; xmm4=(20 21 30 31)
movaps xmm2,xmm1 ; transpose coefficients(phase 1)
unpcklps xmm1,xmm3 ; xmm1=(40 41 50 51)
unpckhps xmm2,xmm3 ; xmm2=(60 61 70 71)
movaps xmm7,xmm6 ; transpose coefficients(phase 2)
unpcklps2 xmm6,xmm0 ; xmm6=(00 01 02 03)=data0
unpckhps2 xmm7,xmm0 ; xmm7=(10 11 12 13)=data1
movaps xmm3,xmm2 ; transpose coefficients(phase 2)
unpcklps2 xmm2,xmm5 ; xmm2=(60 61 62 63)=data6
unpckhps2 xmm3,xmm5 ; xmm3=(70 71 72 73)=data7
movaps xmm0,xmm7
movaps xmm5,xmm6
subps xmm7,xmm2 ; xmm7=data1-data6=tmp6
subps xmm6,xmm3 ; xmm6=data0-data7=tmp7
addps xmm0,xmm2 ; xmm0=data1+data6=tmp1
addps xmm5,xmm3 ; xmm5=data0+data7=tmp0
movaps xmm2, XMMWORD [wk(0)] ; xmm2=(22 23 32 33)
movaps xmm3, XMMWORD [wk(1)] ; xmm3=(42 43 52 53)
movaps XMMWORD [wk(0)], xmm7 ; wk(0)=tmp6
movaps XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7
movaps xmm7,xmm4 ; transpose coefficients(phase 2)
unpcklps2 xmm4,xmm2 ; xmm4=(20 21 22 23)=data2
unpckhps2 xmm7,xmm2 ; xmm7=(30 31 32 33)=data3
movaps xmm6,xmm1 ; transpose coefficients(phase 2)
unpcklps2 xmm1,xmm3 ; xmm1=(40 41 42 43)=data4
unpckhps2 xmm6,xmm3 ; xmm6=(50 51 52 53)=data5
movaps xmm2,xmm7
movaps xmm3,xmm4
addps xmm7,xmm1 ; xmm7=data3+data4=tmp3
addps xmm4,xmm6 ; xmm4=data2+data5=tmp2
subps xmm2,xmm1 ; xmm2=data3-data4=tmp4
subps xmm3,xmm6 ; xmm3=data2-data5=tmp5
; -- Even part
movaps xmm1,xmm5
movaps xmm6,xmm0
subps xmm5,xmm7 ; xmm5=tmp13
subps xmm0,xmm4 ; xmm0=tmp12
addps xmm1,xmm7 ; xmm1=tmp10
addps xmm6,xmm4 ; xmm6=tmp11
addps xmm0,xmm5
mulps xmm0,[rel PD_0_707] ; xmm0=z1
movaps xmm7,xmm1
movaps xmm4,xmm5
subps xmm1,xmm6 ; xmm1=data4
subps xmm5,xmm0 ; xmm5=data6
addps xmm7,xmm6 ; xmm7=data0
addps xmm4,xmm0 ; xmm4=data2
movaps XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_FAST_FLOAT)], xmm1
movaps XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_FAST_FLOAT)], xmm5
movaps XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)], xmm7
movaps XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)], xmm4
; -- Odd part
movaps xmm6, XMMWORD [wk(0)] ; xmm6=tmp6
movaps xmm0, XMMWORD [wk(1)] ; xmm0=tmp7
addps xmm2,xmm3 ; xmm2=tmp10
addps xmm3,xmm6 ; xmm3=tmp11
addps xmm6,xmm0 ; xmm6=tmp12, xmm0=tmp7
mulps xmm3,[rel PD_0_707] ; xmm3=z3
movaps xmm1,xmm2 ; xmm1=tmp10
subps xmm2,xmm6
mulps xmm2,[rel PD_0_382] ; xmm2=z5
mulps xmm1,[rel PD_0_541] ; xmm1=MULTIPLY(tmp10,FIX_0_541196)
mulps xmm6,[rel PD_1_306] ; xmm6=MULTIPLY(tmp12,FIX_1_306562)
addps xmm1,xmm2 ; xmm1=z2
addps xmm6,xmm2 ; xmm6=z4
movaps xmm5,xmm0
subps xmm0,xmm3 ; xmm0=z13
addps xmm5,xmm3 ; xmm5=z11
movaps xmm7,xmm0
movaps xmm4,xmm5
subps xmm0,xmm1 ; xmm0=data3
subps xmm5,xmm6 ; xmm5=data7
addps xmm7,xmm1 ; xmm7=data5
addps xmm4,xmm6 ; xmm4=data1
movaps XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)], xmm0
movaps XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_FAST_FLOAT)], xmm5
movaps XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_FAST_FLOAT)], xmm7
movaps XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)], xmm4
add rdx, byte 4*SIZEOF_FAST_FLOAT
dec rcx
jnz near .columnloop
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
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