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506 lines
15 KiB
NASM
506 lines
15 KiB
NASM
;
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; jcclrss2.asm - colorspace conversion (SSE2)
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;
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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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; [TAB8]
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%include "jcolsamp.inc"
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; --------------------------------------------------------------------------
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SECTION SEG_TEXT
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BITS 32
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;
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; Convert some rows of samples to the output colorspace.
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;
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; GLOBAL(void)
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; jsimd_rgb_ycc_convert_sse2 (JDIMENSION img_width,
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; JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
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; JDIMENSION output_row, int num_rows);
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;
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%define img_width(b) (b)+8 ; JDIMENSION img_width
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%define input_buf(b) (b)+12 ; JSAMPARRAY input_buf
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%define output_buf(b) (b)+16 ; JSAMPIMAGE output_buf
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%define output_row(b) (b)+20 ; JDIMENSION output_row
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%define num_rows(b) (b)+24 ; int num_rows
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%define original_ebp ebp+0
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%define wk(i) ebp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM]
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%define WK_NUM 8
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%define gotptr wk(0)-SIZEOF_POINTER ; void * gotptr
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align 16
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global EXTN(jsimd_rgb_ycc_convert_sse2)
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EXTN(jsimd_rgb_ycc_convert_sse2):
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push ebp
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mov eax,esp ; eax = original ebp
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sub esp, byte 4
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and esp, byte (-SIZEOF_XMMWORD) ; align to 128 bits
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mov [esp],eax
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mov ebp,esp ; ebp = aligned ebp
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lea esp, [wk(0)]
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pushpic eax ; make a room for GOT address
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push ebx
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; push ecx ; need not be preserved
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; push edx ; need not be preserved
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push esi
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push edi
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get_GOT ebx ; get GOT address
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movpic POINTER [gotptr], ebx ; save GOT address
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mov ecx, JDIMENSION [img_width(eax)]
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test ecx,ecx
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jz near .return
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push ecx
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mov esi, JSAMPIMAGE [output_buf(eax)]
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mov ecx, JDIMENSION [output_row(eax)]
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mov edi, JSAMPARRAY [esi+0*SIZEOF_JSAMPARRAY]
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mov ebx, JSAMPARRAY [esi+1*SIZEOF_JSAMPARRAY]
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mov edx, JSAMPARRAY [esi+2*SIZEOF_JSAMPARRAY]
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lea edi, [edi+ecx*SIZEOF_JSAMPROW]
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lea ebx, [ebx+ecx*SIZEOF_JSAMPROW]
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lea edx, [edx+ecx*SIZEOF_JSAMPROW]
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pop ecx
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mov esi, JSAMPARRAY [input_buf(eax)]
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mov eax, INT [num_rows(eax)]
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test eax,eax
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jle near .return
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alignx 16,7
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.rowloop:
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pushpic eax
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push edx
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push ebx
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push edi
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push esi
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push ecx ; col
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mov esi, JSAMPROW [esi] ; inptr
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mov edi, JSAMPROW [edi] ; outptr0
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mov ebx, JSAMPROW [ebx] ; outptr1
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mov edx, JSAMPROW [edx] ; outptr2
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movpic eax, POINTER [gotptr] ; load GOT address (eax)
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cmp ecx, byte SIZEOF_XMMWORD
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jae near .columnloop
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alignx 16,7
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%if RGB_PIXELSIZE == 3 ; ---------------
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.column_ld1:
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push eax
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push edx
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lea ecx,[ecx+ecx*2] ; imul ecx,RGB_PIXELSIZE
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test cl, SIZEOF_BYTE
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jz short .column_ld2
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sub ecx, byte SIZEOF_BYTE
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movzx eax, BYTE [esi+ecx]
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.column_ld2:
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test cl, SIZEOF_WORD
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jz short .column_ld4
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sub ecx, byte SIZEOF_WORD
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movzx edx, WORD [esi+ecx]
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shl eax, WORD_BIT
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or eax,edx
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.column_ld4:
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movd xmmA,eax
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pop edx
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pop eax
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test cl, SIZEOF_DWORD
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jz short .column_ld8
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sub ecx, byte SIZEOF_DWORD
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movd xmmF, XMM_DWORD [esi+ecx]
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pslldq xmmA, SIZEOF_DWORD
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por xmmA,xmmF
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.column_ld8:
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test cl, SIZEOF_MMWORD
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jz short .column_ld16
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sub ecx, byte SIZEOF_MMWORD
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movq xmmB, XMM_MMWORD [esi+ecx]
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pslldq xmmA, SIZEOF_MMWORD
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por xmmA,xmmB
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.column_ld16:
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test cl, SIZEOF_XMMWORD
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jz short .column_ld32
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movdqa xmmF,xmmA
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movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD]
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mov ecx, SIZEOF_XMMWORD
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jmp short .rgb_ycc_cnv
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.column_ld32:
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test cl, 2*SIZEOF_XMMWORD
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mov ecx, SIZEOF_XMMWORD
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jz short .rgb_ycc_cnv
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movdqa xmmB,xmmA
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movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD]
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movdqu xmmF, XMMWORD [esi+1*SIZEOF_XMMWORD]
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jmp short .rgb_ycc_cnv
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alignx 16,7
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.columnloop:
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movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD]
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movdqu xmmF, XMMWORD [esi+1*SIZEOF_XMMWORD]
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movdqu xmmB, XMMWORD [esi+2*SIZEOF_XMMWORD]
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.rgb_ycc_cnv:
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; xmmA=(00 10 20 01 11 21 02 12 22 03 13 23 04 14 24 05)
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; xmmF=(15 25 06 16 26 07 17 27 08 18 28 09 19 29 0A 1A)
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; xmmB=(2A 0B 1B 2B 0C 1C 2C 0D 1D 2D 0E 1E 2E 0F 1F 2F)
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movdqa xmmG,xmmA
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pslldq xmmA,8 ; xmmA=(-- -- -- -- -- -- -- -- 00 10 20 01 11 21 02 12)
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psrldq xmmG,8 ; xmmG=(22 03 13 23 04 14 24 05 -- -- -- -- -- -- -- --)
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punpckhbw xmmA,xmmF ; xmmA=(00 08 10 18 20 28 01 09 11 19 21 29 02 0A 12 1A)
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pslldq xmmF,8 ; xmmF=(-- -- -- -- -- -- -- -- 15 25 06 16 26 07 17 27)
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punpcklbw xmmG,xmmB ; xmmG=(22 2A 03 0B 13 1B 23 2B 04 0C 14 1C 24 2C 05 0D)
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punpckhbw xmmF,xmmB ; xmmF=(15 1D 25 2D 06 0E 16 1E 26 2E 07 0F 17 1F 27 2F)
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movdqa xmmD,xmmA
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pslldq xmmA,8 ; xmmA=(-- -- -- -- -- -- -- -- 00 08 10 18 20 28 01 09)
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psrldq xmmD,8 ; xmmD=(11 19 21 29 02 0A 12 1A -- -- -- -- -- -- -- --)
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punpckhbw xmmA,xmmG ; xmmA=(00 04 08 0C 10 14 18 1C 20 24 28 2C 01 05 09 0D)
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pslldq xmmG,8 ; xmmG=(-- -- -- -- -- -- -- -- 22 2A 03 0B 13 1B 23 2B)
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punpcklbw xmmD,xmmF ; xmmD=(11 15 19 1D 21 25 29 2D 02 06 0A 0E 12 16 1A 1E)
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punpckhbw xmmG,xmmF ; xmmG=(22 26 2A 2E 03 07 0B 0F 13 17 1B 1F 23 27 2B 2F)
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movdqa xmmE,xmmA
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pslldq xmmA,8 ; xmmA=(-- -- -- -- -- -- -- -- 00 04 08 0C 10 14 18 1C)
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psrldq xmmE,8 ; xmmE=(20 24 28 2C 01 05 09 0D -- -- -- -- -- -- -- --)
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punpckhbw xmmA,xmmD ; xmmA=(00 02 04 06 08 0A 0C 0E 10 12 14 16 18 1A 1C 1E)
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pslldq xmmD,8 ; xmmD=(-- -- -- -- -- -- -- -- 11 15 19 1D 21 25 29 2D)
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punpcklbw xmmE,xmmG ; xmmE=(20 22 24 26 28 2A 2C 2E 01 03 05 07 09 0B 0D 0F)
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punpckhbw xmmD,xmmG ; xmmD=(11 13 15 17 19 1B 1D 1F 21 23 25 27 29 2B 2D 2F)
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pxor xmmH,xmmH
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movdqa xmmC,xmmA
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punpcklbw xmmA,xmmH ; xmmA=(00 02 04 06 08 0A 0C 0E)
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punpckhbw xmmC,xmmH ; xmmC=(10 12 14 16 18 1A 1C 1E)
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movdqa xmmB,xmmE
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punpcklbw xmmE,xmmH ; xmmE=(20 22 24 26 28 2A 2C 2E)
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punpckhbw xmmB,xmmH ; xmmB=(01 03 05 07 09 0B 0D 0F)
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movdqa xmmF,xmmD
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punpcklbw xmmD,xmmH ; xmmD=(11 13 15 17 19 1B 1D 1F)
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punpckhbw xmmF,xmmH ; xmmF=(21 23 25 27 29 2B 2D 2F)
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%else ; RGB_PIXELSIZE == 4 ; -----------
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.column_ld1:
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test cl, SIZEOF_XMMWORD/16
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jz short .column_ld2
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sub ecx, byte SIZEOF_XMMWORD/16
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movd xmmA, XMM_DWORD [esi+ecx*RGB_PIXELSIZE]
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.column_ld2:
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test cl, SIZEOF_XMMWORD/8
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jz short .column_ld4
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sub ecx, byte SIZEOF_XMMWORD/8
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movq xmmE, XMM_MMWORD [esi+ecx*RGB_PIXELSIZE]
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pslldq xmmA, SIZEOF_MMWORD
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por xmmA,xmmE
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.column_ld4:
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test cl, SIZEOF_XMMWORD/4
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jz short .column_ld8
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sub ecx, byte SIZEOF_XMMWORD/4
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movdqa xmmE,xmmA
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movdqu xmmA, XMMWORD [esi+ecx*RGB_PIXELSIZE]
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.column_ld8:
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test cl, SIZEOF_XMMWORD/2
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mov ecx, SIZEOF_XMMWORD
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jz short .rgb_ycc_cnv
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movdqa xmmF,xmmA
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movdqa xmmH,xmmE
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movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD]
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movdqu xmmE, XMMWORD [esi+1*SIZEOF_XMMWORD]
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jmp short .rgb_ycc_cnv
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alignx 16,7
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.columnloop:
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movdqu xmmA, XMMWORD [esi+0*SIZEOF_XMMWORD]
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movdqu xmmE, XMMWORD [esi+1*SIZEOF_XMMWORD]
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movdqu xmmF, XMMWORD [esi+2*SIZEOF_XMMWORD]
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movdqu xmmH, XMMWORD [esi+3*SIZEOF_XMMWORD]
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.rgb_ycc_cnv:
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; xmmA=(00 10 20 30 01 11 21 31 02 12 22 32 03 13 23 33)
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; xmmE=(04 14 24 34 05 15 25 35 06 16 26 36 07 17 27 37)
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; xmmF=(08 18 28 38 09 19 29 39 0A 1A 2A 3A 0B 1B 2B 3B)
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; xmmH=(0C 1C 2C 3C 0D 1D 2D 3D 0E 1E 2E 3E 0F 1F 2F 3F)
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movdqa xmmD,xmmA
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punpcklbw xmmA,xmmE ; xmmA=(00 04 10 14 20 24 30 34 01 05 11 15 21 25 31 35)
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punpckhbw xmmD,xmmE ; xmmD=(02 06 12 16 22 26 32 36 03 07 13 17 23 27 33 37)
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movdqa xmmC,xmmF
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punpcklbw xmmF,xmmH ; xmmF=(08 0C 18 1C 28 2C 38 3C 09 0D 19 1D 29 2D 39 3D)
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punpckhbw xmmC,xmmH ; xmmC=(0A 0E 1A 1E 2A 2E 3A 3E 0B 0F 1B 1F 2B 2F 3B 3F)
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movdqa xmmB,xmmA
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punpcklwd xmmA,xmmF ; xmmA=(00 04 08 0C 10 14 18 1C 20 24 28 2C 30 34 38 3C)
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punpckhwd xmmB,xmmF ; xmmB=(01 05 09 0D 11 15 19 1D 21 25 29 2D 31 35 39 3D)
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movdqa xmmG,xmmD
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punpcklwd xmmD,xmmC ; xmmD=(02 06 0A 0E 12 16 1A 1E 22 26 2A 2E 32 36 3A 3E)
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punpckhwd xmmG,xmmC ; xmmG=(03 07 0B 0F 13 17 1B 1F 23 27 2B 2F 33 37 3B 3F)
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movdqa xmmE,xmmA
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punpcklbw xmmA,xmmD ; xmmA=(00 02 04 06 08 0A 0C 0E 10 12 14 16 18 1A 1C 1E)
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punpckhbw xmmE,xmmD ; xmmE=(20 22 24 26 28 2A 2C 2E 30 32 34 36 38 3A 3C 3E)
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movdqa xmmH,xmmB
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punpcklbw xmmB,xmmG ; xmmB=(01 03 05 07 09 0B 0D 0F 11 13 15 17 19 1B 1D 1F)
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punpckhbw xmmH,xmmG ; xmmH=(21 23 25 27 29 2B 2D 2F 31 33 35 37 39 3B 3D 3F)
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pxor xmmF,xmmF
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movdqa xmmC,xmmA
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punpcklbw xmmA,xmmF ; xmmA=(00 02 04 06 08 0A 0C 0E)
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punpckhbw xmmC,xmmF ; xmmC=(10 12 14 16 18 1A 1C 1E)
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movdqa xmmD,xmmB
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punpcklbw xmmB,xmmF ; xmmB=(01 03 05 07 09 0B 0D 0F)
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punpckhbw xmmD,xmmF ; xmmD=(11 13 15 17 19 1B 1D 1F)
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movdqa xmmG,xmmE
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punpcklbw xmmE,xmmF ; xmmE=(20 22 24 26 28 2A 2C 2E)
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punpckhbw xmmG,xmmF ; xmmG=(30 32 34 36 38 3A 3C 3E)
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punpcklbw xmmF,xmmH
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punpckhbw xmmH,xmmH
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psrlw xmmF,BYTE_BIT ; xmmF=(21 23 25 27 29 2B 2D 2F)
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psrlw xmmH,BYTE_BIT ; xmmH=(31 33 35 37 39 3B 3D 3F)
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%endif ; RGB_PIXELSIZE ; ---------------
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; xmm0=R(02468ACE)=RE, xmm2=G(02468ACE)=GE, xmm4=B(02468ACE)=BE
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; xmm1=R(13579BDF)=RO, xmm3=G(13579BDF)=GO, xmm5=B(13579BDF)=BO
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; (Original)
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; Y = 0.29900 * R + 0.58700 * G + 0.11400 * B
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; Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE
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; Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE
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;
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; (This implementation)
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; Y = 0.29900 * R + 0.33700 * G + 0.11400 * B + 0.25000 * G
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; Cb = -0.16874 * R - 0.33126 * G + 0.50000 * B + CENTERJSAMPLE
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; Cr = 0.50000 * R - 0.41869 * G - 0.08131 * B + CENTERJSAMPLE
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movdqa XMMWORD [wk(0)], xmm0 ; wk(0)=RE
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movdqa XMMWORD [wk(1)], xmm1 ; wk(1)=RO
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movdqa XMMWORD [wk(2)], xmm4 ; wk(2)=BE
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movdqa XMMWORD [wk(3)], xmm5 ; wk(3)=BO
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movdqa xmm6,xmm1
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punpcklwd xmm1,xmm3
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punpckhwd xmm6,xmm3
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movdqa xmm7,xmm1
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movdqa xmm4,xmm6
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pmaddwd xmm1,[GOTOFF(eax,PW_F0299_F0337)] ; xmm1=ROL*FIX(0.299)+GOL*FIX(0.337)
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pmaddwd xmm6,[GOTOFF(eax,PW_F0299_F0337)] ; xmm6=ROH*FIX(0.299)+GOH*FIX(0.337)
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pmaddwd xmm7,[GOTOFF(eax,PW_MF016_MF033)] ; xmm7=ROL*-FIX(0.168)+GOL*-FIX(0.331)
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pmaddwd xmm4,[GOTOFF(eax,PW_MF016_MF033)] ; xmm4=ROH*-FIX(0.168)+GOH*-FIX(0.331)
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movdqa XMMWORD [wk(4)], xmm1 ; wk(4)=ROL*FIX(0.299)+GOL*FIX(0.337)
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movdqa XMMWORD [wk(5)], xmm6 ; wk(5)=ROH*FIX(0.299)+GOH*FIX(0.337)
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pxor xmm1,xmm1
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pxor xmm6,xmm6
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punpcklwd xmm1,xmm5 ; xmm1=BOL
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punpckhwd xmm6,xmm5 ; xmm6=BOH
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psrld xmm1,1 ; xmm1=BOL*FIX(0.500)
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psrld xmm6,1 ; xmm6=BOH*FIX(0.500)
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movdqa xmm5,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; xmm5=[PD_ONEHALFM1_CJ]
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paddd xmm7,xmm1
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paddd xmm4,xmm6
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paddd xmm7,xmm5
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paddd xmm4,xmm5
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psrld xmm7,SCALEBITS ; xmm7=CbOL
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psrld xmm4,SCALEBITS ; xmm4=CbOH
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packssdw xmm7,xmm4 ; xmm7=CbO
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movdqa xmm1, XMMWORD [wk(2)] ; xmm1=BE
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movdqa xmm6,xmm0
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punpcklwd xmm0,xmm2
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punpckhwd xmm6,xmm2
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movdqa xmm5,xmm0
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movdqa xmm4,xmm6
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pmaddwd xmm0,[GOTOFF(eax,PW_F0299_F0337)] ; xmm0=REL*FIX(0.299)+GEL*FIX(0.337)
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pmaddwd xmm6,[GOTOFF(eax,PW_F0299_F0337)] ; xmm6=REH*FIX(0.299)+GEH*FIX(0.337)
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pmaddwd xmm5,[GOTOFF(eax,PW_MF016_MF033)] ; xmm5=REL*-FIX(0.168)+GEL*-FIX(0.331)
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pmaddwd xmm4,[GOTOFF(eax,PW_MF016_MF033)] ; xmm4=REH*-FIX(0.168)+GEH*-FIX(0.331)
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movdqa XMMWORD [wk(6)], xmm0 ; wk(6)=REL*FIX(0.299)+GEL*FIX(0.337)
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movdqa XMMWORD [wk(7)], xmm6 ; wk(7)=REH*FIX(0.299)+GEH*FIX(0.337)
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pxor xmm0,xmm0
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pxor xmm6,xmm6
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punpcklwd xmm0,xmm1 ; xmm0=BEL
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punpckhwd xmm6,xmm1 ; xmm6=BEH
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psrld xmm0,1 ; xmm0=BEL*FIX(0.500)
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psrld xmm6,1 ; xmm6=BEH*FIX(0.500)
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movdqa xmm1,[GOTOFF(eax,PD_ONEHALFM1_CJ)] ; xmm1=[PD_ONEHALFM1_CJ]
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paddd xmm5,xmm0
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paddd xmm4,xmm6
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paddd xmm5,xmm1
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paddd xmm4,xmm1
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psrld xmm5,SCALEBITS ; xmm5=CbEL
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psrld xmm4,SCALEBITS ; xmm4=CbEH
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packssdw xmm5,xmm4 ; xmm5=CbE
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psllw xmm7,BYTE_BIT
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por xmm5,xmm7 ; xmm5=Cb
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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)]
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|
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 16
|