;
; jccolext.asm - colorspace conversion (MMX)
;
; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
;
; 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_mmx (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_MMWORD ; mmword wk[WK_NUM]
%define WK_NUM 8
%define gotptr wk(0)-SIZEOF_POINTER ; void * gotptr
align 16
global EXTN(jsimd_rgb_ycc_convert_mmx)
EXTN(jsimd_rgb_ycc_convert_mmx):
push ebp
mov eax,esp ; eax = original ebp
sub esp, byte 4
and esp, byte (-SIZEOF_MMWORD) ; align to 64 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)] ; num_cols
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_MMWORD
jae short .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
xor eax,eax
mov al, BYTE [esi+ecx]
.column_ld2:
test cl, SIZEOF_WORD
jz short .column_ld4
sub ecx, byte SIZEOF_WORD
xor edx,edx
mov dx, WORD [esi+ecx]
shl eax, WORD_BIT
or eax,edx
.column_ld4:
movd mmA,eax
pop edx
pop eax
test cl, SIZEOF_DWORD
jz short .column_ld8
sub ecx, byte SIZEOF_DWORD
movd mmG, DWORD [esi+ecx]
psllq mmA, DWORD_BIT
por mmA,mmG
.column_ld8:
test cl, SIZEOF_MMWORD
jz short .column_ld16
movq mmG,mmA
movq mmA, MMWORD [esi+0*SIZEOF_MMWORD]
mov ecx, SIZEOF_MMWORD
jmp short .rgb_ycc_cnv
.column_ld16:
test cl, 2*SIZEOF_MMWORD
mov ecx, SIZEOF_MMWORD
jz short .rgb_ycc_cnv
movq mmF,mmA
movq mmA, MMWORD [esi+0*SIZEOF_MMWORD]
movq mmG, MMWORD [esi+1*SIZEOF_MMWORD]
jmp short .rgb_ycc_cnv
alignx 16,7
.columnloop:
movq mmA, MMWORD [esi+0*SIZEOF_MMWORD]
movq mmG, MMWORD [esi+1*SIZEOF_MMWORD]
movq mmF, MMWORD [esi+2*SIZEOF_MMWORD]
.rgb_ycc_cnv:
; mmA=(00 10 20 01 11 21 02 12)
; mmG=(22 03 13 23 04 14 24 05)
; mmF=(15 25 06 16 26 07 17 27)
movq mmD,mmA
psllq mmA,4*BYTE_BIT ; mmA=(-- -- -- -- 00 10 20 01)
psrlq mmD,4*BYTE_BIT ; mmD=(11 21 02 12 -- -- -- --)
punpckhbw mmA,mmG ; mmA=(00 04 10 14 20 24 01 05)
psllq mmG,4*BYTE_BIT ; mmG=(-- -- -- -- 22 03 13 23)
punpcklbw mmD,mmF ; mmD=(11 15 21 25 02 06 12 16)
punpckhbw mmG,mmF ; mmG=(22 26 03 07 13 17 23 27)
movq mmE,mmA
psllq mmA,4*BYTE_BIT ; mmA=(-- -- -- -- 00 04 10 14)
psrlq mmE,4*BYTE_BIT ; mmE=(20 24 01 05 -- -- -- --)
punpckhbw mmA,mmD ; mmA=(00 02 04 06 10 12 14 16)
psllq mmD,4*BYTE_BIT ; mmD=(-- -- -- -- 11 15 21 25)
punpcklbw mmE,mmG ; mmE=(20 22 24 26 01 03 05 07)
punpckhbw mmD,mmG ; mmD=(11 13 15 17 21 23 25 27)
pxor mmH,mmH
movq mmC,mmA
punpcklbw mmA,mmH ; mmA=(00 02 04 06)
punpckhbw mmC,mmH ; mmC=(10 12 14 16)
movq mmB,mmE
punpcklbw mmE,mmH ; mmE=(20 22 24 26)
punpckhbw mmB,mmH ; mmB=(01 03 05 07)
movq mmF,mmD
punpcklbw mmD,mmH ; mmD=(11 13 15 17)
punpckhbw mmF,mmH ; mmF=(21 23 25 27)
%else ; RGB_PIXELSIZE == 4 ; -----------
.column_ld1:
test cl, SIZEOF_MMWORD/8
jz short .column_ld2
sub ecx, byte SIZEOF_MMWORD/8
movd mmA, DWORD [esi+ecx*RGB_PIXELSIZE]
.column_ld2:
test cl, SIZEOF_MMWORD/4
jz short .column_ld4
sub ecx, byte SIZEOF_MMWORD/4
movq mmF,mmA
movq mmA, MMWORD [esi+ecx*RGB_PIXELSIZE]
.column_ld4:
test cl, SIZEOF_MMWORD/2
mov ecx, SIZEOF_MMWORD
jz short .rgb_ycc_cnv
movq mmD,mmA
movq mmC,mmF
movq mmA, MMWORD [esi+0*SIZEOF_MMWORD]
movq mmF, MMWORD [esi+1*SIZEOF_MMWORD]
jmp short .rgb_ycc_cnv
alignx 16,7
.columnloop:
movq mmA, MMWORD [esi+0*SIZEOF_MMWORD]
movq mmF, MMWORD [esi+1*SIZEOF_MMWORD]
movq mmD, MMWORD [esi+2*SIZEOF_MMWORD]
movq mmC, MMWORD [esi+3*SIZEOF_MMWORD]
.rgb_ycc_cnv:
; mmA=(00 10 20 30 01 11 21 31)
; mmF=(02 12 22 32 03 13 23 33)
; mmD=(04 14 24 34 05 15 25 35)
; mmC=(06 16 26 36 07 17 27 37)
movq mmB,mmA
punpcklbw mmA,mmF ; mmA=(00 02 10 12 20 22 30 32)
punpckhbw mmB,mmF ; mmB=(01 03 11 13 21 23 31 33)
movq mmG,mmD
punpcklbw mmD,mmC ; mmD=(04 06 14 16 24 26 34 36)
punpckhbw mmG,mmC ; mmG=(05 07 15 17 25 27 35 37)
movq mmE,mmA
punpcklwd mmA,mmD ; mmA=(00 02 04 06 10 12 14 16)
punpckhwd mmE,mmD ; mmE=(20 22 24 26 30 32 34 36)
movq mmH,mmB
punpcklwd mmB,mmG ; mmB=(01 03 05 07 11 13 15 17)
punpckhwd mmH,mmG ; mmH=(21 23 25 27 31 33 35 37)
pxor mmF,mmF
movq mmC,mmA
punpcklbw mmA,mmF ; mmA=(00 02 04 06)
punpckhbw mmC,mmF ; mmC=(10 12 14 16)
movq mmD,mmB
punpcklbw mmB,mmF ; mmB=(01 03 05 07)
punpckhbw mmD,mmF ; mmD=(11 13 15 17)
movq mmG,mmE
punpcklbw mmE,mmF ; mmE=(20 22 24 26)
punpckhbw mmG,mmF ; mmG=(30 32 34 36)
punpcklbw mmF,mmH
punpckhbw mmH,mmH
psrlw mmF,BYTE_BIT ; mmF=(21 23 25 27)
psrlw mmH,BYTE_BIT ; mmH=(31 33 35 37)
%endif ; RGB_PIXELSIZE ; ---------------
; mm0=(R0 R2 R4 R6)=RE, mm2=(G0 G2 G4 G6)=GE, mm4=(B0 B2 B4 B6)=BE
; mm1=(R1 R3 R5 R7)=RO, mm3=(G1 G3 G5 G7)=GO, mm5=(B1 B3 B5 B7)=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
movq MMWORD [wk(0)], mm0 ; wk(0)=RE
movq MMWORD [wk(1)], mm1 ; wk(1)=RO
movq MMWORD [wk(2)], mm4 ; wk(2)=BE
movq MMWORD [wk(3)], mm5 ; wk(3)=BO
movq mm6,mm1
punpcklwd mm1,mm3
punpckhwd mm6,mm3
movq mm7,mm1
movq mm4,mm6
pmaddwd mm1,[GOTOFF(eax,PW_F0299_F0337)] ; mm1=ROL*FIX(0.299)+GOL*FIX(0.337)
pmaddwd mm6,[GOTOFF(eax,PW_F0299_F0337)] ; mm6=ROH*FIX(0.299)+GOH*FIX(0.337)
pmaddwd mm7,[GOTOFF(eax,PW_MF016_MF033)] ; mm7=ROL*-FIX(0.168)+GOL*-FIX(0.331)
pmaddwd mm4,[GOTOFF(eax,PW_MF016_MF033)] ; mm4=ROH*-FIX(0.168)+GOH*-FIX(0.331)
movq MMWORD [wk(4)], mm1 ; wk(4)=ROL*FIX(0.299)+GOL*FIX(0.337)
movq MMWORD [wk(5)], mm6 ; wk(5)=ROH*FIX(0.299)+GOH*FIX(0.337)
pxor mm1,mm1
pxor mm6,mm6
punpcklwd mm1,mm5 ; mm1=BOL
punpckhwd mm6,mm5 ; mm6=BOH
psrld mm1,1 ; mm1=BOL*FIX(0.500)
psrld mm6,1 ; mm6=BOH*FIX(0.500)
movq mm5,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; mm5=[PD_ONEHALFM1_CJ]
paddd mm7,mm1
paddd mm4,mm6
paddd mm7,mm5
paddd mm4,mm5
psrld mm7,SCALEBITS ; mm7=CbOL
psrld mm4,SCALEBITS ; mm4=CbOH
packssdw mm7,mm4 ; mm7=CbO
movq mm1, MMWORD [wk(2)] ; mm1=BE
movq mm6,mm0
punpcklwd mm0,mm2
punpckhwd mm6,mm2
movq mm5,mm0
movq mm4,mm6
pmaddwd mm0,[GOTOFF(eax,PW_F0299_F0337)] ; mm0=REL*FIX(0.299)+GEL*FIX(0.337)
pmaddwd mm6,[GOTOFF(eax,PW_F0299_F0337)] ; mm6=REH*FIX(0.299)+GEH*FIX(0.337)
pmaddwd mm5,[GOTOFF(eax,PW_MF016_MF033)] ; mm5=REL*-FIX(0.168)+GEL*-FIX(0.331)
pmaddwd mm4,[GOTOFF(eax,PW_MF016_MF033)] ; mm4=REH*-FIX(0.168)+GEH*-FIX(0.331)
movq MMWORD [wk(6)], mm0 ; wk(6)=REL*FIX(0.299)+GEL*FIX(0.337)
movq MMWORD [wk(7)], mm6 ; wk(7)=REH*FIX(0.299)+GEH*FIX(0.337)
pxor mm0,mm0
pxor mm6,mm6
punpcklwd mm0,mm1 ; mm0=BEL
punpckhwd mm6,mm1 ; mm6=BEH
psrld mm0,1 ; mm0=BEL*FIX(0.500)
psrld mm6,1 ; mm6=BEH*FIX(0.500)
movq mm1,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; mm1=[PD_ONEHALFM1_CJ]
paddd mm5,mm0
paddd mm4,mm6
paddd mm5,mm1
paddd mm4,mm1
psrld mm5,SCALEBITS ; mm5=CbEL
psrld mm4,SCALEBITS ; mm4=CbEH
packssdw mm5,mm4 ; mm5=CbE
psllw mm7,BYTE_BIT
por mm5,mm7 ; mm5=Cb
movq MMWORD [ebx], mm5 ; Save Cb
movq mm0, MMWORD [wk(3)] ; mm0=BO
movq mm6, MMWORD [wk(2)] ; mm6=BE
movq mm1, MMWORD [wk(1)] ; mm1=RO
movq mm4,mm0
punpcklwd mm0,mm3
punpckhwd mm4,mm3
movq mm7,mm0
movq mm5,mm4
pmaddwd mm0,[GOTOFF(eax,PW_F0114_F0250)] ; mm0=BOL*FIX(0.114)+GOL*FIX(0.250)
pmaddwd mm4,[GOTOFF(eax,PW_F0114_F0250)] ; mm4=BOH*FIX(0.114)+GOH*FIX(0.250)
pmaddwd mm7,[GOTOFF(eax,PW_MF008_MF041)] ; mm7=BOL*-FIX(0.081)+GOL*-FIX(0.418)
pmaddwd mm5,[GOTOFF(eax,PW_MF008_MF041)] ; mm5=BOH*-FIX(0.081)+GOH*-FIX(0.418)
movq mm3,[GOTOFF(eax,PD_ONEHALF)] ; mm3=[PD_ONEHALF]
paddd mm0, MMWORD [wk(4)]
paddd mm4, MMWORD [wk(5)]
paddd mm0,mm3
paddd mm4,mm3
psrld mm0,SCALEBITS ; mm0=YOL
psrld mm4,SCALEBITS ; mm4=YOH
packssdw mm0,mm4 ; mm0=YO
pxor mm3,mm3
pxor mm4,mm4
punpcklwd mm3,mm1 ; mm3=ROL
punpckhwd mm4,mm1 ; mm4=ROH
psrld mm3,1 ; mm3=ROL*FIX(0.500)
psrld mm4,1 ; mm4=ROH*FIX(0.500)
movq mm1,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; mm1=[PD_ONEHALFM1_CJ]
paddd mm7,mm3
paddd mm5,mm4
paddd mm7,mm1
paddd mm5,mm1
psrld mm7,SCALEBITS ; mm7=CrOL
psrld mm5,SCALEBITS ; mm5=CrOH
packssdw mm7,mm5 ; mm7=CrO
movq mm3, MMWORD [wk(0)] ; mm3=RE
movq mm4,mm6
punpcklwd mm6,mm2
punpckhwd mm4,mm2
movq mm1,mm6
movq mm5,mm4
pmaddwd mm6,[GOTOFF(eax,PW_F0114_F0250)] ; mm6=BEL*FIX(0.114)+GEL*FIX(0.250)
pmaddwd mm4,[GOTOFF(eax,PW_F0114_F0250)] ; mm4=BEH*FIX(0.114)+GEH*FIX(0.250)
pmaddwd mm1,[GOTOFF(eax,PW_MF008_MF041)] ; mm1=BEL*-FIX(0.081)+GEL*-FIX(0.418)
pmaddwd mm5,[GOTOFF(eax,PW_MF008_MF041)] ; mm5=BEH*-FIX(0.081)+GEH*-FIX(0.418)
movq mm2,[GOTOFF(eax,PD_ONEHALF)] ; mm2=[PD_ONEHALF]
paddd mm6, MMWORD [wk(6)]
paddd mm4, MMWORD [wk(7)]
paddd mm6,mm2
paddd mm4,mm2
psrld mm6,SCALEBITS ; mm6=YEL
psrld mm4,SCALEBITS ; mm4=YEH
packssdw mm6,mm4 ; mm6=YE
psllw mm0,BYTE_BIT
por mm6,mm0 ; mm6=Y
movq MMWORD [edi], mm6 ; Save Y
pxor mm2,mm2
pxor mm4,mm4
punpcklwd mm2,mm3 ; mm2=REL
punpckhwd mm4,mm3 ; mm4=REH
psrld mm2,1 ; mm2=REL*FIX(0.500)
psrld mm4,1 ; mm4=REH*FIX(0.500)
movq mm0,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; mm0=[PD_ONEHALFM1_CJ]
paddd mm1,mm2
paddd mm5,mm4
paddd mm1,mm0
paddd mm5,mm0
psrld mm1,SCALEBITS ; mm1=CrEL
psrld mm5,SCALEBITS ; mm5=CrEH
packssdw mm1,mm5 ; mm1=CrE
psllw mm7,BYTE_BIT
por mm1,mm7 ; mm1=Cr
movq MMWORD [edx], mm1 ; Save Cr
sub ecx, byte SIZEOF_MMWORD
add esi, byte RGB_PIXELSIZE*SIZEOF_MMWORD ; inptr
add edi, byte SIZEOF_MMWORD ; outptr0
add ebx, byte SIZEOF_MMWORD ; outptr1
add edx, byte SIZEOF_MMWORD ; outptr2
cmp ecx, byte SIZEOF_MMWORD
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
emms ; empty MMX state
.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 16