;
; jdmrgext.asm - merged upsampling/color conversion (MMX)
;
; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
;
; 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"
; --------------------------------------------------------------------------
;
; Upsample and color convert for the case of 2:1 horizontal and 1:1 vertical.
;
; GLOBAL(void)
; jsimd_h2v1_merged_upsample_mmx (JDIMENSION output_width,
; JSAMPIMAGE input_buf,
; JDIMENSION in_row_group_ctr,
; JSAMPARRAY output_buf);
;
%define output_width(b) (b)+8 ; JDIMENSION output_width
%define input_buf(b) (b)+12 ; JSAMPIMAGE input_buf
%define in_row_group_ctr(b) (b)+16 ; JDIMENSION in_row_group_ctr
%define output_buf(b) (b)+20 ; JSAMPARRAY output_buf
%define original_ebp ebp+0
%define wk(i) ebp-(WK_NUM-(i))*SIZEOF_MMWORD ; mmword wk[WK_NUM]
%define WK_NUM 3
%define gotptr wk(0)-SIZEOF_POINTER ; void * gotptr
align 16
global EXTN(jsimd_h2v1_merged_upsample_mmx)
EXTN(jsimd_h2v1_merged_upsample_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 [output_width(eax)] ; col
test ecx,ecx
jz near .return
push ecx
mov edi, JSAMPIMAGE [input_buf(eax)]
mov ecx, JDIMENSION [in_row_group_ctr(eax)]
mov esi, JSAMPARRAY [edi+0*SIZEOF_JSAMPARRAY]
mov ebx, JSAMPARRAY [edi+1*SIZEOF_JSAMPARRAY]
mov edx, JSAMPARRAY [edi+2*SIZEOF_JSAMPARRAY]
mov edi, JSAMPARRAY [output_buf(eax)]
mov esi, JSAMPROW [esi+ecx*SIZEOF_JSAMPROW] ; inptr0
mov ebx, JSAMPROW [ebx+ecx*SIZEOF_JSAMPROW] ; inptr1
mov edx, JSAMPROW [edx+ecx*SIZEOF_JSAMPROW] ; inptr2
mov edi, JSAMPROW [edi] ; outptr
pop ecx ; col
alignx 16,7
.columnloop:
movpic eax, POINTER [gotptr] ; load GOT address (eax)
movq mm6, MMWORD [ebx] ; mm6=Cb(01234567)
movq mm7, MMWORD [edx] ; mm7=Cr(01234567)
pxor mm1,mm1 ; mm1=(all 0's)
pcmpeqw mm3,mm3
psllw mm3,7 ; mm3={0xFF80 0xFF80 0xFF80 0xFF80}
movq mm4,mm6
punpckhbw mm6,mm1 ; mm6=Cb(4567)=CbH
punpcklbw mm4,mm1 ; mm4=Cb(0123)=CbL
movq mm0,mm7
punpckhbw mm7,mm1 ; mm7=Cr(4567)=CrH
punpcklbw mm0,mm1 ; mm0=Cr(0123)=CrL
paddw mm6,mm3
paddw mm4,mm3
paddw mm7,mm3
paddw mm0,mm3
; (Original)
; R = Y + 1.40200 * Cr
; G = Y - 0.34414 * Cb - 0.71414 * Cr
; B = Y + 1.77200 * Cb
;
; (This implementation)
; R = Y + 0.40200 * Cr + Cr
; G = Y - 0.34414 * Cb + 0.28586 * Cr - Cr
; B = Y - 0.22800 * Cb + Cb + Cb
movq mm5,mm6 ; mm5=CbH
movq mm2,mm4 ; mm2=CbL
paddw mm6,mm6 ; mm6=2*CbH
paddw mm4,mm4 ; mm4=2*CbL
movq mm1,mm7 ; mm1=CrH
movq mm3,mm0 ; mm3=CrL
paddw mm7,mm7 ; mm7=2*CrH
paddw mm0,mm0 ; mm0=2*CrL
pmulhw mm6,[GOTOFF(eax,PW_MF0228)] ; mm6=(2*CbH * -FIX(0.22800))
pmulhw mm4,[GOTOFF(eax,PW_MF0228)] ; mm4=(2*CbL * -FIX(0.22800))
pmulhw mm7,[GOTOFF(eax,PW_F0402)] ; mm7=(2*CrH * FIX(0.40200))
pmulhw mm0,[GOTOFF(eax,PW_F0402)] ; mm0=(2*CrL * FIX(0.40200))
paddw mm6,[GOTOFF(eax,PW_ONE)]
paddw mm4,[GOTOFF(eax,PW_ONE)]
psraw mm6,1 ; mm6=(CbH * -FIX(0.22800))
psraw mm4,1 ; mm4=(CbL * -FIX(0.22800))
paddw mm7,[GOTOFF(eax,PW_ONE)]
paddw mm0,[GOTOFF(eax,PW_ONE)]
psraw mm7,1 ; mm7=(CrH * FIX(0.40200))
psraw mm0,1 ; mm0=(CrL * FIX(0.40200))
paddw mm6,mm5
paddw mm4,mm2
paddw mm6,mm5 ; mm6=(CbH * FIX(1.77200))=(B-Y)H
paddw mm4,mm2 ; mm4=(CbL * FIX(1.77200))=(B-Y)L
paddw mm7,mm1 ; mm7=(CrH * FIX(1.40200))=(R-Y)H
paddw mm0,mm3 ; mm0=(CrL * FIX(1.40200))=(R-Y)L
movq MMWORD [wk(0)], mm6 ; wk(0)=(B-Y)H
movq MMWORD [wk(1)], mm7 ; wk(1)=(R-Y)H
movq mm6,mm5
movq mm7,mm2
punpcklwd mm5,mm1
punpckhwd mm6,mm1
pmaddwd mm5,[GOTOFF(eax,PW_MF0344_F0285)]
pmaddwd mm6,[GOTOFF(eax,PW_MF0344_F0285)]
punpcklwd mm2,mm3
punpckhwd mm7,mm3
pmaddwd mm2,[GOTOFF(eax,PW_MF0344_F0285)]
pmaddwd mm7,[GOTOFF(eax,PW_MF0344_F0285)]
paddd mm5,[GOTOFF(eax,PD_ONEHALF)]
paddd mm6,[GOTOFF(eax,PD_ONEHALF)]
psrad mm5,SCALEBITS
psrad mm6,SCALEBITS
paddd mm2,[GOTOFF(eax,PD_ONEHALF)]
paddd mm7,[GOTOFF(eax,PD_ONEHALF)]
psrad mm2,SCALEBITS
psrad mm7,SCALEBITS
packssdw mm5,mm6 ; mm5=CbH*-FIX(0.344)+CrH*FIX(0.285)
packssdw mm2,mm7 ; mm2=CbL*-FIX(0.344)+CrL*FIX(0.285)
psubw mm5,mm1 ; mm5=CbH*-FIX(0.344)+CrH*-FIX(0.714)=(G-Y)H
psubw mm2,mm3 ; mm2=CbL*-FIX(0.344)+CrL*-FIX(0.714)=(G-Y)L
movq MMWORD [wk(2)], mm5 ; wk(2)=(G-Y)H
mov al,2 ; Yctr
jmp short .Yloop_1st
alignx 16,7
.Yloop_2nd:
movq mm0, MMWORD [wk(1)] ; mm0=(R-Y)H
movq mm2, MMWORD [wk(2)] ; mm2=(G-Y)H
movq mm4, MMWORD [wk(0)] ; mm4=(B-Y)H
alignx 16,7
.Yloop_1st:
movq mm7, MMWORD [esi] ; mm7=Y(01234567)
pcmpeqw mm6,mm6
psrlw mm6,BYTE_BIT ; mm6={0xFF 0x00 0xFF 0x00 ..}
pand mm6,mm7 ; mm6=Y(0246)=YE
psrlw mm7,BYTE_BIT ; mm7=Y(1357)=YO
movq mm1,mm0 ; mm1=mm0=(R-Y)(L/H)
movq mm3,mm2 ; mm3=mm2=(G-Y)(L/H)
movq mm5,mm4 ; mm5=mm4=(B-Y)(L/H)
paddw mm0,mm6 ; mm0=((R-Y)+YE)=RE=(R0 R2 R4 R6)
paddw mm1,mm7 ; mm1=((R-Y)+YO)=RO=(R1 R3 R5 R7)
packuswb mm0,mm0 ; mm0=(R0 R2 R4 R6 ** ** ** **)
packuswb mm1,mm1 ; mm1=(R1 R3 R5 R7 ** ** ** **)
paddw mm2,mm6 ; mm2=((G-Y)+YE)=GE=(G0 G2 G4 G6)
paddw mm3,mm7 ; mm3=((G-Y)+YO)=GO=(G1 G3 G5 G7)
packuswb mm2,mm2 ; mm2=(G0 G2 G4 G6 ** ** ** **)
packuswb mm3,mm3 ; mm3=(G1 G3 G5 G7 ** ** ** **)
paddw mm4,mm6 ; mm4=((B-Y)+YE)=BE=(B0 B2 B4 B6)
paddw mm5,mm7 ; mm5=((B-Y)+YO)=BO=(B1 B3 B5 B7)
packuswb mm4,mm4 ; mm4=(B0 B2 B4 B6 ** ** ** **)
packuswb mm5,mm5 ; mm5=(B1 B3 B5 B7 ** ** ** **)
%if RGB_PIXELSIZE == 3 ; ---------------
; mmA=(00 02 04 06 ** ** ** **), mmB=(01 03 05 07 ** ** ** **)
; mmC=(10 12 14 16 ** ** ** **), mmD=(11 13 15 17 ** ** ** **)
; mmE=(20 22 24 26 ** ** ** **), mmF=(21 23 25 27 ** ** ** **)
; mmG=(** ** ** ** ** ** ** **), mmH=(** ** ** ** ** ** ** **)
punpcklbw mmA,mmC ; mmA=(00 10 02 12 04 14 06 16)
punpcklbw mmE,mmB ; mmE=(20 01 22 03 24 05 26 07)
punpcklbw mmD,mmF ; mmD=(11 21 13 23 15 25 17 27)
movq mmG,mmA
movq mmH,mmA
punpcklwd mmA,mmE ; mmA=(00 10 20 01 02 12 22 03)
punpckhwd mmG,mmE ; mmG=(04 14 24 05 06 16 26 07)
psrlq mmH,2*BYTE_BIT ; mmH=(02 12 04 14 06 16 -- --)
psrlq mmE,2*BYTE_BIT ; mmE=(22 03 24 05 26 07 -- --)
movq mmC,mmD
movq mmB,mmD
punpcklwd mmD,mmH ; mmD=(11 21 02 12 13 23 04 14)
punpckhwd mmC,mmH ; mmC=(15 25 06 16 17 27 -- --)
psrlq mmB,2*BYTE_BIT ; mmB=(13 23 15 25 17 27 -- --)
movq mmF,mmE
punpcklwd mmE,mmB ; mmE=(22 03 13 23 24 05 15 25)
punpckhwd mmF,mmB ; mmF=(26 07 17 27 -- -- -- --)
punpckldq mmA,mmD ; mmA=(00 10 20 01 11 21 02 12)
punpckldq mmE,mmG ; mmE=(22 03 13 23 04 14 24 05)
punpckldq mmC,mmF ; mmC=(15 25 06 16 26 07 17 27)
cmp ecx, byte SIZEOF_MMWORD
jb short .column_st16
movq MMWORD [edi+0*SIZEOF_MMWORD], mmA
movq MMWORD [edi+1*SIZEOF_MMWORD], mmE
movq MMWORD [edi+2*SIZEOF_MMWORD], mmC
sub ecx, byte SIZEOF_MMWORD
jz near .endcolumn
add edi, byte RGB_PIXELSIZE*SIZEOF_MMWORD ; outptr
add esi, byte SIZEOF_MMWORD ; inptr0
dec al ; Yctr
jnz near .Yloop_2nd
add ebx, byte SIZEOF_MMWORD ; inptr1
add edx, byte SIZEOF_MMWORD ; inptr2
jmp near .columnloop
alignx 16,7
.column_st16:
lea ecx, [ecx+ecx*2] ; imul ecx, RGB_PIXELSIZE
cmp ecx, byte 2*SIZEOF_MMWORD
jb short .column_st8
movq MMWORD [edi+0*SIZEOF_MMWORD], mmA
movq MMWORD [edi+1*SIZEOF_MMWORD], mmE
movq mmA,mmC
sub ecx, byte 2*SIZEOF_MMWORD
add edi, byte 2*SIZEOF_MMWORD
jmp short .column_st4
.column_st8:
cmp ecx, byte SIZEOF_MMWORD
jb short .column_st4
movq MMWORD [edi+0*SIZEOF_MMWORD], mmA
movq mmA,mmE
sub ecx, byte SIZEOF_MMWORD
add edi, byte SIZEOF_MMWORD
.column_st4:
movd eax,mmA
cmp ecx, byte SIZEOF_DWORD
jb short .column_st2
mov DWORD [edi+0*SIZEOF_DWORD], eax
psrlq mmA,DWORD_BIT
movd eax,mmA
sub ecx, byte SIZEOF_DWORD
add edi, byte SIZEOF_DWORD
.column_st2:
cmp ecx, byte SIZEOF_WORD
jb short .column_st1
mov WORD [edi+0*SIZEOF_WORD], ax
shr eax,WORD_BIT
sub ecx, byte SIZEOF_WORD
add edi, byte SIZEOF_WORD
.column_st1:
cmp ecx, byte SIZEOF_BYTE
jb short .endcolumn
mov BYTE [edi+0*SIZEOF_BYTE], al
%else ; RGB_PIXELSIZE == 4 ; -----------
%ifdef RGBX_FILLER_0XFF
pcmpeqb mm6,mm6 ; mm6=(X0 X2 X4 X6 ** ** ** **)
pcmpeqb mm7,mm7 ; mm7=(X1 X3 X5 X7 ** ** ** **)
%else
pxor mm6,mm6 ; mm6=(X0 X2 X4 X6 ** ** ** **)
pxor mm7,mm7 ; mm7=(X1 X3 X5 X7 ** ** ** **)
%endif
; mmA=(00 02 04 06 ** ** ** **), mmB=(01 03 05 07 ** ** ** **)
; mmC=(10 12 14 16 ** ** ** **), mmD=(11 13 15 17 ** ** ** **)
; mmE=(20 22 24 26 ** ** ** **), mmF=(21 23 25 27 ** ** ** **)
; mmG=(30 32 34 36 ** ** ** **), mmH=(31 33 35 37 ** ** ** **)
punpcklbw mmA,mmC ; mmA=(00 10 02 12 04 14 06 16)
punpcklbw mmE,mmG ; mmE=(20 30 22 32 24 34 26 36)
punpcklbw mmB,mmD ; mmB=(01 11 03 13 05 15 07 17)
punpcklbw mmF,mmH ; mmF=(21 31 23 33 25 35 27 37)
movq mmC,mmA
punpcklwd mmA,mmE ; mmA=(00 10 20 30 02 12 22 32)
punpckhwd mmC,mmE ; mmC=(04 14 24 34 06 16 26 36)
movq mmG,mmB
punpcklwd mmB,mmF ; mmB=(01 11 21 31 03 13 23 33)
punpckhwd mmG,mmF ; mmG=(05 15 25 35 07 17 27 37)
movq mmD,mmA
punpckldq mmA,mmB ; mmA=(00 10 20 30 01 11 21 31)
punpckhdq mmD,mmB ; mmD=(02 12 22 32 03 13 23 33)
movq mmH,mmC
punpckldq mmC,mmG ; mmC=(04 14 24 34 05 15 25 35)
punpckhdq mmH,mmG ; mmH=(06 16 26 36 07 17 27 37)
cmp ecx, byte SIZEOF_MMWORD
jb short .column_st16
movq MMWORD [edi+0*SIZEOF_MMWORD], mmA
movq MMWORD [edi+1*SIZEOF_MMWORD], mmD
movq MMWORD [edi+2*SIZEOF_MMWORD], mmC
movq MMWORD [edi+3*SIZEOF_MMWORD], mmH
sub ecx, byte SIZEOF_MMWORD
jz short .endcolumn
add edi, byte RGB_PIXELSIZE*SIZEOF_MMWORD ; outptr
add esi, byte SIZEOF_MMWORD ; inptr0
dec al ; Yctr
jnz near .Yloop_2nd
add ebx, byte SIZEOF_MMWORD ; inptr1
add edx, byte SIZEOF_MMWORD ; inptr2
jmp near .columnloop
alignx 16,7
.column_st16:
cmp ecx, byte SIZEOF_MMWORD/2
jb short .column_st8
movq MMWORD [edi+0*SIZEOF_MMWORD], mmA
movq MMWORD [edi+1*SIZEOF_MMWORD], mmD
movq mmA,mmC
movq mmD,mmH
sub ecx, byte SIZEOF_MMWORD/2
add edi, byte 2*SIZEOF_MMWORD
.column_st8:
cmp ecx, byte SIZEOF_MMWORD/4
jb short .column_st4
movq MMWORD [edi+0*SIZEOF_MMWORD], mmA
movq mmA,mmD
sub ecx, byte SIZEOF_MMWORD/4
add edi, byte 1*SIZEOF_MMWORD
.column_st4:
cmp ecx, byte SIZEOF_MMWORD/8
jb short .endcolumn
movd DWORD [edi+0*SIZEOF_DWORD], mmA
%endif ; RGB_PIXELSIZE ; ---------------
.endcolumn:
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
; --------------------------------------------------------------------------
;
; Upsample and color convert for the case of 2:1 horizontal and 2:1 vertical.
;
; GLOBAL(void)
; jsimd_h2v2_merged_upsample_mmx (JDIMENSION output_width,
; JSAMPIMAGE input_buf,
; JDIMENSION in_row_group_ctr,
; JSAMPARRAY output_buf);
;
%define output_width(b) (b)+8 ; JDIMENSION output_width
%define input_buf(b) (b)+12 ; JSAMPIMAGE input_buf
%define in_row_group_ctr(b) (b)+16 ; JDIMENSION in_row_group_ctr
%define output_buf(b) (b)+20 ; JSAMPARRAY output_buf
align 16
global EXTN(jsimd_h2v2_merged_upsample_mmx)
EXTN(jsimd_h2v2_merged_upsample_mmx):
push ebp
mov ebp,esp
push ebx
; push ecx ; need not be preserved
; push edx ; need not be preserved
push esi
push edi
mov eax, JDIMENSION [output_width(ebp)]
mov edi, JSAMPIMAGE [input_buf(ebp)]
mov ecx, JDIMENSION [in_row_group_ctr(ebp)]
mov esi, JSAMPARRAY [edi+0*SIZEOF_JSAMPARRAY]
mov ebx, JSAMPARRAY [edi+1*SIZEOF_JSAMPARRAY]
mov edx, JSAMPARRAY [edi+2*SIZEOF_JSAMPARRAY]
mov edi, JSAMPARRAY [output_buf(ebp)]
lea esi, [esi+ecx*SIZEOF_JSAMPROW]
push edx ; inptr2
push ebx ; inptr1
push esi ; inptr00
mov ebx,esp
push edi ; output_buf (outptr0)
push ecx ; in_row_group_ctr
push ebx ; input_buf
push eax ; output_width
call near EXTN(jsimd_h2v1_merged_upsample_mmx)
add esi, byte SIZEOF_JSAMPROW ; inptr01
add edi, byte SIZEOF_JSAMPROW ; outptr1
mov POINTER [ebx+0*SIZEOF_POINTER], esi
mov POINTER [ebx-1*SIZEOF_POINTER], edi
call near EXTN(jsimd_h2v1_merged_upsample_mmx)
add esp, byte 7*SIZEOF_DWORD
pop edi
pop esi
; pop edx ; need not be preserved
; pop ecx ; need not be preserved
pop ebx
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