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19c791cdac6df84418c66eb9d67cfa9703bc2461
mozjpeg/simd/i386/jccolext-sse2.asm
DRC 19c791cdac Improve code formatting consistency 
With rare exceptions ...
- Always separate line continuation characters by one space from
  preceding code.
- Always use two-space indentation.  Never use tabs.
- Always use K&R-style conditional blocks.
- Always surround operators with spaces, except in raw assembly code.
- Always put a space after, but not before, a comma.
- Never put a space between type casts and variables/function calls.
- Never put a space between the function name and the argument list in
  function declarations and prototypes.
- Always surround braces ('{' and '}') with spaces.
- Always surround statements (if, for, else, catch, while, do, switch)
  with spaces.
- Always attach pointer symbols ('*' and '**') to the variable or
  function name.
- Always precede pointer symbols ('*' and '**') by a space in type
  casts.
- Use the MIN() macro from jpegint.h within the libjpeg and TurboJPEG
  API libraries (using min() from tjutil.h is still necessary for
  TJBench.)
- Where it makes sense (particularly in the TurboJPEG code), put a blank
  line after variable declaration blocks.
- Always separate statements in one-liners by two spaces.

The purpose of this was to ease maintenance on my part and also to make
it easier for contributors to figure out how to format patch
submissions.  This was admittedly confusing (even to me sometimes) when
we had 3 or 4 different style conventions in the same source tree.  The
new convention is more consistent with the formatting of other OSS code
bases.

This commit corrects deviations from the chosen formatting style in the
libjpeg API code and reformats the TurboJPEG API code such that it
conforms to the same standard.

NOTES:
- Although it is no longer necessary for the function name in function
  declarations to begin in Column 1 (this was historically necessary
  because of the ansi2knr utility, which allowed libjpeg to be built
  with non-ANSI compilers), we retain that formatting for the libjpeg
  code because it improves readability when using libjpeg's function
  attribute macros (GLOBAL(), etc.)
- This reformatting project was accomplished with the help of AStyle and
  Uncrustify, although neither was completely up to the task, and thus
  a great deal of manual tweaking was required.  Note to developers of
  code formatting utilities:  the libjpeg-turbo code base is an
  excellent test bed, because AFAICT, it breaks every single one of the
  utilities that are currently available.
- The legacy (MMX, SSE, 3DNow!) assembly code for i386 has been
  formatted to match the SSE2 code (refer to
  ff5685d5344273df321eb63a005eaae19d2496e3.)  I hadn't intended to
  bother with this, but the Loongson MMI implementation demonstrated
  that there is still academic value to the MMX implementation, as an
  algorithmic model for other 64-bit vector implementations.  Thus, it
  is desirable to improve its readability in the same manner as that of
  the SSE2 implementation.
2018-03-16 02:14:34 -05:00

506 lines
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NASM
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;
; jccolext.asm - colorspace conversion (SSE2)
;
; Copyright (C) 2016, 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
;
; [TAB8]
%include "jcolsamp.inc"
; --------------------------------------------------------------------------
;
; Convert some rows of samples to the output colorspace.
;
; GLOBAL(void)
; jsimd_rgb_ycc_convert_sse2(JDIMENSION img_width, JSAMPARRAY input_buf,
; JSAMPIMAGE output_buf, JDIMENSION output_row,
; int num_rows);
;
%define img_width(b) (b) + 8 ; JDIMENSION img_width
%define input_buf(b) (b) + 12 ; JSAMPARRAY input_buf
%define output_buf(b) (b) + 16 ; JSAMPIMAGE output_buf
%define output_row(b) (b) + 20 ; JDIMENSION output_row
%define num_rows(b) (b) + 24 ; int num_rows
%define original_ebp ebp + 0
%define wk(i) ebp - (WK_NUM - (i)) * SIZEOF_XMMWORD
; xmmword wk[WK_NUM]
%define WK_NUM 8
%define gotptr wk(0) - SIZEOF_POINTER ; void * gotptr
align 32
GLOBAL_FUNCTION(jsimd_rgb_ycc_convert_sse2)
EXTN(jsimd_rgb_ycc_convert_sse2):
push ebp
mov eax, esp ; eax = original ebp
sub esp, byte 4
and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
mov [esp], eax
mov ebp, esp ; ebp = aligned ebp
lea esp, [wk(0)]
pushpic eax ; make a room for GOT address
push ebx
; push ecx ; need not be preserved
; push edx ; need not be preserved
push esi
push edi
get_GOT ebx ; get GOT address
movpic POINTER [gotptr], ebx ; save GOT address
mov ecx, JDIMENSION [img_width(eax)]
test ecx, ecx
jz near .return
push ecx
mov esi, JSAMPIMAGE [output_buf(eax)]
mov ecx, JDIMENSION [output_row(eax)]
mov edi, JSAMPARRAY [esi+0*SIZEOF_JSAMPARRAY]
mov ebx, JSAMPARRAY [esi+1*SIZEOF_JSAMPARRAY]
mov edx, JSAMPARRAY [esi+2*SIZEOF_JSAMPARRAY]
lea edi, [edi+ecx*SIZEOF_JSAMPROW]
lea ebx, [ebx+ecx*SIZEOF_JSAMPROW]
lea edx, [edx+ecx*SIZEOF_JSAMPROW]
pop ecx
mov esi, JSAMPARRAY [input_buf(eax)]
mov eax, INT [num_rows(eax)]
test eax, eax
jle near .return
alignx 16, 7
.rowloop:
pushpic eax
push edx
push ebx
push edi
push esi
push ecx ; col
mov esi, JSAMPROW [esi] ; inptr
mov edi, JSAMPROW [edi] ; outptr0
mov ebx, JSAMPROW [ebx] ; outptr1
mov edx, JSAMPROW [edx] ; outptr2
movpic eax, POINTER [gotptr] ; load GOT address (eax)
cmp ecx, byte SIZEOF_XMMWORD
jae near .columnloop
alignx 16, 7
%if RGB_PIXELSIZE == 3 ; ---------------
.column_ld1:
push eax
push edx
lea ecx, [ecx+ecx*2] ; imul ecx,RGB_PIXELSIZE
test cl, SIZEOF_BYTE
jz short .column_ld2
sub ecx, byte SIZEOF_BYTE
movzx eax, BYTE [esi+ecx]
.column_ld2:
test cl, SIZEOF_WORD
jz short .column_ld4
sub ecx, byte SIZEOF_WORD
movzx edx, WORD [esi+ecx]
shl eax, WORD_BIT
or eax, edx
.column_ld4:
movd xmmA, eax
pop edx
pop eax
test cl, SIZEOF_DWORD
jz short .column_ld8
sub ecx, byte SIZEOF_DWORD
movd xmmF, XMM_DWORD [esi+ecx]
pslldq xmmA, SIZEOF_DWORD
por xmmA, xmmF
.column_ld8:
test cl, SIZEOF_MMWORD
jz short .column_ld16
sub ecx, byte SIZEOF_MMWORD
movq xmmB, XMM_MMWORD [esi+ecx]
pslldq xmmA, SIZEOF_MMWORD
por xmmA, xmmB
.column_ld16:
test cl, SIZEOF_XMMWORD
jz short .column_ld32
movdqa xmmF, xmmA
movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD]
mov ecx, SIZEOF_XMMWORD
jmp short .rgb_ycc_cnv
.column_ld32:
test cl, 2*SIZEOF_XMMWORD
mov ecx, SIZEOF_XMMWORD
jz short .rgb_ycc_cnv
movdqa xmmB, xmmA
movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD]
movdqu xmmF, XMMWORD [esi+1*SIZEOF_XMMWORD]
jmp short .rgb_ycc_cnv
alignx 16, 7
.columnloop:
movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD]
movdqu xmmF, XMMWORD [esi+1*SIZEOF_XMMWORD]
movdqu xmmB, XMMWORD [esi+2*SIZEOF_XMMWORD]
.rgb_ycc_cnv:
; xmmA=(00 10 20 01 11 21 02 12 22 03 13 23 04 14 24 05)
; xmmF=(15 25 06 16 26 07 17 27 08 18 28 09 19 29 0A 1A)
; xmmB=(2A 0B 1B 2B 0C 1C 2C 0D 1D 2D 0E 1E 2E 0F 1F 2F)
movdqa xmmG, xmmA
pslldq xmmA, 8 ; xmmA=(-- -- -- -- -- -- -- -- 00 10 20 01 11 21 02 12)
psrldq xmmG, 8 ; xmmG=(22 03 13 23 04 14 24 05 -- -- -- -- -- -- -- --)
punpckhbw xmmA, xmmF ; xmmA=(00 08 10 18 20 28 01 09 11 19 21 29 02 0A 12 1A)
pslldq xmmF, 8 ; xmmF=(-- -- -- -- -- -- -- -- 15 25 06 16 26 07 17 27)
punpcklbw xmmG, xmmB ; xmmG=(22 2A 03 0B 13 1B 23 2B 04 0C 14 1C 24 2C 05 0D)
punpckhbw xmmF, xmmB ; xmmF=(15 1D 25 2D 06 0E 16 1E 26 2E 07 0F 17 1F 27 2F)
movdqa xmmD, xmmA
pslldq xmmA, 8 ; xmmA=(-- -- -- -- -- -- -- -- 00 08 10 18 20 28 01 09)
psrldq xmmD, 8 ; xmmD=(11 19 21 29 02 0A 12 1A -- -- -- -- -- -- -- --)
punpckhbw xmmA, xmmG ; xmmA=(00 04 08 0C 10 14 18 1C 20 24 28 2C 01 05 09 0D)
pslldq xmmG, 8 ; xmmG=(-- -- -- -- -- -- -- -- 22 2A 03 0B 13 1B 23 2B)
punpcklbw xmmD, xmmF ; xmmD=(11 15 19 1D 21 25 29 2D 02 06 0A 0E 12 16 1A 1E)
punpckhbw xmmG, xmmF ; xmmG=(22 26 2A 2E 03 07 0B 0F 13 17 1B 1F 23 27 2B 2F)
movdqa xmmE, xmmA
pslldq xmmA, 8 ; xmmA=(-- -- -- -- -- -- -- -- 00 04 08 0C 10 14 18 1C)
psrldq xmmE, 8 ; xmmE=(20 24 28 2C 01 05 09 0D -- -- -- -- -- -- -- --)
punpckhbw xmmA, xmmD ; xmmA=(00 02 04 06 08 0A 0C 0E 10 12 14 16 18 1A 1C 1E)
pslldq xmmD, 8 ; xmmD=(-- -- -- -- -- -- -- -- 11 15 19 1D 21 25 29 2D)
punpcklbw xmmE, xmmG ; xmmE=(20 22 24 26 28 2A 2C 2E 01 03 05 07 09 0B 0D 0F)
punpckhbw xmmD, xmmG ; xmmD=(11 13 15 17 19 1B 1D 1F 21 23 25 27 29 2B 2D 2F)
pxor xmmH, xmmH
movdqa xmmC, xmmA
punpcklbw xmmA, xmmH ; xmmA=(00 02 04 06 08 0A 0C 0E)
punpckhbw xmmC, xmmH ; xmmC=(10 12 14 16 18 1A 1C 1E)
movdqa xmmB, xmmE
punpcklbw xmmE, xmmH ; xmmE=(20 22 24 26 28 2A 2C 2E)
punpckhbw xmmB, xmmH ; xmmB=(01 03 05 07 09 0B 0D 0F)
movdqa xmmF, xmmD
punpcklbw xmmD, xmmH ; xmmD=(11 13 15 17 19 1B 1D 1F)
punpckhbw xmmF, xmmH ; xmmF=(21 23 25 27 29 2B 2D 2F)
%else ; RGB_PIXELSIZE == 4 ; -----------
.column_ld1:
test cl, SIZEOF_XMMWORD/16
jz short .column_ld2
sub ecx, byte SIZEOF_XMMWORD/16
movd xmmA, XMM_DWORD [esi+ecx*RGB_PIXELSIZE]
.column_ld2:
test cl, SIZEOF_XMMWORD/8
jz short .column_ld4
sub ecx, byte SIZEOF_XMMWORD/8
movq xmmE, XMM_MMWORD [esi+ecx*RGB_PIXELSIZE]
pslldq xmmA, SIZEOF_MMWORD
por xmmA, xmmE
.column_ld4:
test cl, SIZEOF_XMMWORD/4
jz short .column_ld8
sub ecx, byte SIZEOF_XMMWORD/4
movdqa xmmE, xmmA
movdqu xmmA, XMMWORD [esi+ecx*RGB_PIXELSIZE]
.column_ld8:
test cl, SIZEOF_XMMWORD/2
mov ecx, SIZEOF_XMMWORD
jz short .rgb_ycc_cnv
movdqa xmmF, xmmA
movdqa xmmH, xmmE
movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD]
movdqu xmmE, XMMWORD [esi+1*SIZEOF_XMMWORD]
jmp short .rgb_ycc_cnv
alignx 16, 7
.columnloop:
movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD]
movdqu xmmE, XMMWORD [esi+1*SIZEOF_XMMWORD]
movdqu xmmF, XMMWORD [esi+2*SIZEOF_XMMWORD]
movdqu xmmH, XMMWORD [esi+3*SIZEOF_XMMWORD]
.rgb_ycc_cnv:
; xmmA=(00 10 20 30 01 11 21 31 02 12 22 32 03 13 23 33)
; xmmE=(04 14 24 34 05 15 25 35 06 16 26 36 07 17 27 37)
; xmmF=(08 18 28 38 09 19 29 39 0A 1A 2A 3A 0B 1B 2B 3B)
; xmmH=(0C 1C 2C 3C 0D 1D 2D 3D 0E 1E 2E 3E 0F 1F 2F 3F)
movdqa xmmD, xmmA
punpcklbw xmmA, xmmE ; xmmA=(00 04 10 14 20 24 30 34 01 05 11 15 21 25 31 35)
punpckhbw xmmD, xmmE ; xmmD=(02 06 12 16 22 26 32 36 03 07 13 17 23 27 33 37)
movdqa xmmC, xmmF
punpcklbw xmmF, xmmH ; xmmF=(08 0C 18 1C 28 2C 38 3C 09 0D 19 1D 29 2D 39 3D)
punpckhbw xmmC, xmmH ; xmmC=(0A 0E 1A 1E 2A 2E 3A 3E 0B 0F 1B 1F 2B 2F 3B 3F)
movdqa xmmB, xmmA
punpcklwd xmmA, xmmF ; xmmA=(00 04 08 0C 10 14 18 1C 20 24 28 2C 30 34 38 3C)
punpckhwd xmmB, xmmF ; xmmB=(01 05 09 0D 11 15 19 1D 21 25 29 2D 31 35 39 3D)
movdqa xmmG, xmmD
punpcklwd xmmD, xmmC ; xmmD=(02 06 0A 0E 12 16 1A 1E 22 26 2A 2E 32 36 3A 3E)
punpckhwd xmmG, xmmC ; xmmG=(03 07 0B 0F 13 17 1B 1F 23 27 2B 2F 33 37 3B 3F)
movdqa xmmE, xmmA
punpcklbw xmmA, xmmD ; xmmA=(00 02 04 06 08 0A 0C 0E 10 12 14 16 18 1A 1C 1E)
punpckhbw xmmE, xmmD ; xmmE=(20 22 24 26 28 2A 2C 2E 30 32 34 36 38 3A 3C 3E)
movdqa xmmH, xmmB
punpcklbw xmmB, xmmG ; xmmB=(01 03 05 07 09 0B 0D 0F 11 13 15 17 19 1B 1D 1F)
punpckhbw xmmH, xmmG ; xmmH=(21 23 25 27 29 2B 2D 2F 31 33 35 37 39 3B 3D 3F)
pxor xmmF, xmmF
movdqa xmmC, xmmA
punpcklbw xmmA, xmmF ; xmmA=(00 02 04 06 08 0A 0C 0E)
punpckhbw xmmC, xmmF ; xmmC=(10 12 14 16 18 1A 1C 1E)
movdqa xmmD, xmmB
punpcklbw xmmB, xmmF ; xmmB=(01 03 05 07 09 0B 0D 0F)
punpckhbw xmmD, xmmF ; xmmD=(11 13 15 17 19 1B 1D 1F)
movdqa xmmG, xmmE
punpcklbw xmmE, xmmF ; xmmE=(20 22 24 26 28 2A 2C 2E)
punpckhbw xmmG, xmmF ; xmmG=(30 32 34 36 38 3A 3C 3E)
punpcklbw xmmF, xmmH
punpckhbw xmmH, xmmH
psrlw xmmF, BYTE_BIT ; xmmF=(21 23 25 27 29 2B 2D 2F)
psrlw xmmH, BYTE_BIT ; xmmH=(31 33 35 37 39 3B 3D 3F)
%endif ; RGB_PIXELSIZE ; ---------------
; xmm0=R(02468ACE)=RE, xmm2=G(02468ACE)=GE, xmm4=B(02468ACE)=BE
; xmm1=R(13579BDF)=RO, xmm3=G(13579BDF)=GO, xmm5=B(13579BDF)=BO
; (Original)
; Y = 0.29900 * R + 0.58700 * G + 0.11400 * B
; Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE
; Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE
;
; (This implementation)
; Y = 0.29900 * R + 0.33700 * G + 0.11400 * B + 0.25000 * G
; Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE
; Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE
movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=RE
movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=RO
movdqa XMMWORD [wk(2)], xmm4 ; wk(2)=BE
movdqa XMMWORD [wk(3)], xmm5 ; wk(3)=BO
movdqa xmm6, xmm1
punpcklwd xmm1, xmm3
punpckhwd xmm6, xmm3
movdqa xmm7, xmm1
movdqa xmm4, xmm6
pmaddwd xmm1, [GOTOFF(eax,PW_F0299_F0337)] ; xmm1=ROL*FIX(0.299)+GOL*FIX(0.337)
pmaddwd xmm6, [GOTOFF(eax,PW_F0299_F0337)] ; xmm6=ROH*FIX(0.299)+GOH*FIX(0.337)
pmaddwd xmm7, [GOTOFF(eax,PW_MF016_MF033)] ; xmm7=ROL*-FIX(0.168)+GOL*-FIX(0.331)
pmaddwd xmm4, [GOTOFF(eax,PW_MF016_MF033)] ; xmm4=ROH*-FIX(0.168)+GOH*-FIX(0.331)
movdqa XMMWORD [wk(4)], xmm1 ; wk(4)=ROL*FIX(0.299)+GOL*FIX(0.337)
movdqa XMMWORD [wk(5)], xmm6 ; wk(5)=ROH*FIX(0.299)+GOH*FIX(0.337)
pxor xmm1, xmm1
pxor xmm6, xmm6
punpcklwd xmm1, xmm5 ; xmm1=BOL
punpckhwd xmm6, xmm5 ; xmm6=BOH
psrld xmm1, 1 ; xmm1=BOL*FIX(0.500)
psrld xmm6, 1 ; xmm6=BOH*FIX(0.500)
movdqa xmm5, [GOTOFF(eax,PD_ONEHALFM1_CJ)] ; xmm5=[PD_ONEHALFM1_CJ]
paddd xmm7, xmm1
paddd xmm4, xmm6
paddd xmm7, xmm5
paddd xmm4, xmm5
psrld xmm7, SCALEBITS ; xmm7=CbOL
psrld xmm4, SCALEBITS ; xmm4=CbOH
packssdw xmm7, xmm4 ; xmm7=CbO
movdqa xmm1, XMMWORD [wk(2)] ; xmm1=BE
movdqa xmm6, xmm0
punpcklwd xmm0, xmm2
punpckhwd xmm6, xmm2
movdqa xmm5, xmm0
movdqa xmm4, xmm6
pmaddwd xmm0, [GOTOFF(eax,PW_F0299_F0337)] ; xmm0=REL*FIX(0.299)+GEL*FIX(0.337)
pmaddwd xmm6, [GOTOFF(eax,PW_F0299_F0337)] ; xmm6=REH*FIX(0.299)+GEH*FIX(0.337)
pmaddwd xmm5, [GOTOFF(eax,PW_MF016_MF033)] ; xmm5=REL*-FIX(0.168)+GEL*-FIX(0.331)
pmaddwd xmm4, [GOTOFF(eax,PW_MF016_MF033)] ; xmm4=REH*-FIX(0.168)+GEH*-FIX(0.331)
movdqa XMMWORD [wk(6)], xmm0 ; wk(6)=REL*FIX(0.299)+GEL*FIX(0.337)
movdqa XMMWORD [wk(7)], xmm6 ; wk(7)=REH*FIX(0.299)+GEH*FIX(0.337)
pxor xmm0, xmm0
pxor xmm6, xmm6
punpcklwd xmm0, xmm1 ; xmm0=BEL
punpckhwd xmm6, xmm1 ; xmm6=BEH
psrld xmm0, 1 ; xmm0=BEL*FIX(0.500)
psrld xmm6, 1 ; xmm6=BEH*FIX(0.500)
movdqa xmm1, [GOTOFF(eax,PD_ONEHALFM1_CJ)] ; xmm1=[PD_ONEHALFM1_CJ]
paddd xmm5, xmm0
paddd xmm4, xmm6
paddd xmm5, xmm1
paddd xmm4, xmm1
psrld xmm5, SCALEBITS ; xmm5=CbEL
psrld xmm4, SCALEBITS ; xmm4=CbEH
packssdw xmm5, xmm4 ; xmm5=CbE
psllw xmm7, BYTE_BIT
por xmm5, xmm7 ; xmm5=Cb
movdqa XMMWORD [ebx], xmm5 ; Save Cb
movdqa xmm0, XMMWORD [wk(3)] ; xmm0=BO
movdqa xmm6, XMMWORD [wk(2)] ; xmm6=BE
movdqa xmm1, XMMWORD [wk(1)] ; xmm1=RO
movdqa xmm4, xmm0
punpcklwd xmm0, xmm3
punpckhwd xmm4, xmm3
movdqa xmm7, xmm0
movdqa xmm5, xmm4
pmaddwd xmm0, [GOTOFF(eax,PW_F0114_F0250)] ; xmm0=BOL*FIX(0.114)+GOL*FIX(0.250)
pmaddwd xmm4, [GOTOFF(eax,PW_F0114_F0250)] ; xmm4=BOH*FIX(0.114)+GOH*FIX(0.250)
pmaddwd xmm7, [GOTOFF(eax,PW_MF008_MF041)] ; xmm7=BOL*-FIX(0.081)+GOL*-FIX(0.418)
pmaddwd xmm5, [GOTOFF(eax,PW_MF008_MF041)] ; xmm5=BOH*-FIX(0.081)+GOH*-FIX(0.418)
movdqa xmm3, [GOTOFF(eax,PD_ONEHALF)] ; xmm3=[PD_ONEHALF]
paddd xmm0, XMMWORD [wk(4)]
paddd xmm4, XMMWORD [wk(5)]
paddd xmm0, xmm3
paddd xmm4, xmm3
psrld xmm0, SCALEBITS ; xmm0=YOL
psrld xmm4, SCALEBITS ; xmm4=YOH
packssdw xmm0, xmm4 ; xmm0=YO
pxor xmm3, xmm3
pxor xmm4, xmm4
punpcklwd xmm3, xmm1 ; xmm3=ROL
punpckhwd xmm4, xmm1 ; xmm4=ROH
psrld xmm3, 1 ; xmm3=ROL*FIX(0.500)
psrld xmm4, 1 ; xmm4=ROH*FIX(0.500)
movdqa xmm1, [GOTOFF(eax,PD_ONEHALFM1_CJ)] ; xmm1=[PD_ONEHALFM1_CJ]
paddd xmm7, xmm3
paddd xmm5, xmm4
paddd xmm7, xmm1
paddd xmm5, xmm1
psrld xmm7, SCALEBITS ; xmm7=CrOL
psrld xmm5, SCALEBITS ; xmm5=CrOH
packssdw xmm7, xmm5 ; xmm7=CrO
movdqa xmm3, XMMWORD [wk(0)] ; xmm3=RE
movdqa xmm4, xmm6
punpcklwd xmm6, xmm2
punpckhwd xmm4, xmm2
movdqa xmm1, xmm6
movdqa xmm5, xmm4
pmaddwd xmm6, [GOTOFF(eax,PW_F0114_F0250)] ; xmm6=BEL*FIX(0.114)+GEL*FIX(0.250)
pmaddwd xmm4, [GOTOFF(eax,PW_F0114_F0250)] ; xmm4=BEH*FIX(0.114)+GEH*FIX(0.250)
pmaddwd xmm1, [GOTOFF(eax,PW_MF008_MF041)] ; xmm1=BEL*-FIX(0.081)+GEL*-FIX(0.418)
pmaddwd xmm5, [GOTOFF(eax,PW_MF008_MF041)] ; xmm5=BEH*-FIX(0.081)+GEH*-FIX(0.418)
movdqa xmm2, [GOTOFF(eax,PD_ONEHALF)] ; xmm2=[PD_ONEHALF]
paddd xmm6, XMMWORD [wk(6)]
paddd xmm4, XMMWORD [wk(7)]
paddd xmm6, xmm2
paddd xmm4, xmm2
psrld xmm6, SCALEBITS ; xmm6=YEL
psrld xmm4, SCALEBITS ; xmm4=YEH
packssdw xmm6, xmm4 ; xmm6=YE
psllw xmm0, BYTE_BIT
por xmm6, xmm0 ; xmm6=Y
movdqa XMMWORD [edi], xmm6 ; Save Y
pxor xmm2, xmm2
pxor xmm4, xmm4
punpcklwd xmm2, xmm3 ; xmm2=REL
punpckhwd xmm4, xmm3 ; xmm4=REH
psrld xmm2, 1 ; xmm2=REL*FIX(0.500)
psrld xmm4, 1 ; xmm4=REH*FIX(0.500)
movdqa xmm0, [GOTOFF(eax,PD_ONEHALFM1_CJ)] ; xmm0=[PD_ONEHALFM1_CJ]
paddd xmm1, xmm2
paddd xmm5, xmm4
paddd xmm1, xmm0
paddd xmm5, xmm0
psrld xmm1, SCALEBITS ; xmm1=CrEL
psrld xmm5, SCALEBITS ; xmm5=CrEH
packssdw xmm1, xmm5 ; xmm1=CrE
psllw xmm7, BYTE_BIT
por xmm1, xmm7 ; xmm1=Cr
movdqa XMMWORD [edx], xmm1 ; Save Cr
sub ecx, byte SIZEOF_XMMWORD
add esi, byte RGB_PIXELSIZE*SIZEOF_XMMWORD ; inptr
add edi, byte SIZEOF_XMMWORD ; outptr0
add ebx, byte SIZEOF_XMMWORD ; outptr1
add edx, byte SIZEOF_XMMWORD ; outptr2
cmp ecx, byte SIZEOF_XMMWORD
jae near .columnloop
test ecx, ecx
jnz near .column_ld1
pop ecx ; col
pop esi
pop edi
pop ebx
pop edx
poppic eax
add esi, byte SIZEOF_JSAMPROW ; input_buf
add edi, byte SIZEOF_JSAMPROW
add ebx, byte SIZEOF_JSAMPROW
add edx, byte SIZEOF_JSAMPROW
dec eax ; num_rows
jg near .rowloop
.return:
pop edi
pop esi
; pop edx ; need not be preserved
; pop ecx ; need not be preserved
pop 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 32
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