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diff --git a/tags/1.2.1/simd/jcgrymmx.asm b/tags/1.2.1/simd/jcgrymmx.asm
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+;
+; jcgrymmx.asm - grayscale colorspace conversion (MMX)
+;
+; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
+; Copyright 2011 D. R. Commander
+;
+; Based on
+; 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_gray_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 2
+%define gotptr wk(0)-SIZEOF_POINTER ; void * gotptr
+
+ align 16
+ global EXTN(jsimd_rgb_gray_convert_mmx)
+
+EXTN(jsimd_rgb_gray_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]
+ lea edi, [edi+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 edi
+ push esi
+ push ecx ; col
+
+ mov esi, JSAMPROW [esi] ; inptr
+ mov edi, JSAMPROW [edi] ; outptr0
+ 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_gray_cnv
+.column_ld16:
+ test cl, 2*SIZEOF_MMWORD
+ mov ecx, SIZEOF_MMWORD
+ jz short .rgb_gray_cnv
+ movq mmF,mmA
+ movq mmA, MMWORD [esi+0*SIZEOF_MMWORD]
+ movq mmG, MMWORD [esi+1*SIZEOF_MMWORD]
+ jmp short .rgb_gray_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_gray_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_gray_cnv
+ movq mmD,mmA
+ movq mmC,mmF
+ movq mmA, MMWORD [esi+0*SIZEOF_MMWORD]
+ movq mmF, MMWORD [esi+1*SIZEOF_MMWORD]
+ jmp short .rgb_gray_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_gray_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
+ ;
+ ; (This implementation)
+ ; Y = 0.29900 * R + 0.33700 * G + 0.11400 * B + 0.25000 * G
+
+ movq mm6,mm1
+ punpcklwd mm1,mm3
+ punpckhwd mm6,mm3
+ 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)
+
+ movq mm7, mm6 ; mm7=ROH*FIX(0.299)+GOH*FIX(0.337)
+
+ movq mm6,mm0
+ punpcklwd mm0,mm2
+ punpckhwd mm6,mm2
+ 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)
+
+ movq MMWORD [wk(0)], mm0 ; wk(0)=REL*FIX(0.299)+GEL*FIX(0.337)
+ movq MMWORD [wk(1)], mm6 ; wk(1)=REH*FIX(0.299)+GEH*FIX(0.337)
+
+ movq mm0, mm5 ; mm0=BO
+ movq mm6, mm4 ; mm6=BE
+
+ movq mm4,mm0
+ punpcklwd mm0,mm3
+ punpckhwd mm4,mm3
+ 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)
+
+ movq mm3,[GOTOFF(eax,PD_ONEHALF)] ; mm3=[PD_ONEHALF]
+
+ paddd mm0, mm1
+ paddd mm4, mm7
+ paddd mm0,mm3
+ paddd mm4,mm3
+ psrld mm0,SCALEBITS ; mm0=YOL
+ psrld mm4,SCALEBITS ; mm4=YOH
+ packssdw mm0,mm4 ; mm0=YO
+
+ movq mm4,mm6
+ punpcklwd mm6,mm2
+ punpckhwd mm4,mm2
+ 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)
+
+ movq mm2,[GOTOFF(eax,PD_ONEHALF)] ; mm2=[PD_ONEHALF]
+
+ paddd mm6, MMWORD [wk(0)]
+ paddd mm4, MMWORD [wk(1)]
+ 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
+
+ sub ecx, byte SIZEOF_MMWORD
+ add esi, byte RGB_PIXELSIZE*SIZEOF_MMWORD ; inptr
+ add edi, byte SIZEOF_MMWORD ; outptr0
+ cmp ecx, byte SIZEOF_MMWORD
+ jae near .columnloop
+ test ecx,ecx
+ jnz near .column_ld1
+
+ pop ecx ; col
+ pop esi
+ pop edi
+ poppic eax
+
+ add esi, byte SIZEOF_JSAMPROW ; input_buf
+ add edi, 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
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