Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 458 insertions, 0 deletions

diff --git a/media/libjpeg/simd/i386/jdcolext-sse2.asm b/media/libjpeg/simd/i386/jdcolext-sse2.asm
new file mode 100644
index 0000000000..d5572b3294
--- /dev/null
+++ b/media/libjpeg/simd/i386/jdcolext-sse2.asm
@@ -0,0 +1,458 @@
+;
+; jdcolext.asm - colorspace conversion (SSE2)
+;
+; Copyright 2009, 2012 Pierre Ossman <ossman@cendio.se> for Cendio AB
+; Copyright (C) 2012, 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
+
+%include "jcolsamp.inc"
+
+; --------------------------------------------------------------------------
+;
+; Convert some rows of samples to the output colorspace.
+;
+; GLOBAL(void)
+; jsimd_ycc_rgb_convert_sse2(JDIMENSION out_width, JSAMPIMAGE input_buf,
+;                            JDIMENSION input_row, JSAMPARRAY output_buf,
+;                            int num_rows)
+;
+
+%define out_width(b)   (b) + 8          ; JDIMENSION out_width
+%define input_buf(b)   (b) + 12         ; JSAMPIMAGE input_buf
+%define input_row(b)   (b) + 16         ; JDIMENSION input_row
+%define output_buf(b)  (b) + 20         ; JSAMPARRAY output_buf
+%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         2
+%define gotptr         wk(0) - SIZEOF_POINTER  ; void * gotptr
+
+    align       32
+    GLOBAL_FUNCTION(jsimd_ycc_rgb_convert_sse2)
+
+EXTN(jsimd_ycc_rgb_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 [out_width(eax)]  ; num_cols
+    test        ecx, ecx
+    jz          near .return
+
+    push        ecx
+
+    mov         edi, JSAMPIMAGE [input_buf(eax)]
+    mov         ecx, JDIMENSION [input_row(eax)]
+    mov         esi, JSAMPARRAY [edi+0*SIZEOF_JSAMPARRAY]
+    mov         ebx, JSAMPARRAY [edi+1*SIZEOF_JSAMPARRAY]
+    mov         edx, JSAMPARRAY [edi+2*SIZEOF_JSAMPARRAY]
+    lea         esi, [esi+ecx*SIZEOF_JSAMPROW]
+    lea         ebx, [ebx+ecx*SIZEOF_JSAMPROW]
+    lea         edx, [edx+ecx*SIZEOF_JSAMPROW]
+
+    pop         ecx
+
+    mov         edi, JSAMPARRAY [output_buf(eax)]
+    mov         eax, INT [num_rows(eax)]
+    test        eax, eax
+    jle         near .return
+    alignx      16, 7
+.rowloop:
+    push        eax
+    push        edi
+    push        edx
+    push        ebx
+    push        esi
+    push        ecx                     ; col
+
+    mov         esi, JSAMPROW [esi]     ; inptr0
+    mov         ebx, JSAMPROW [ebx]     ; inptr1
+    mov         edx, JSAMPROW [edx]     ; inptr2
+    mov         edi, JSAMPROW [edi]     ; outptr
+    movpic      eax, POINTER [gotptr]   ; load GOT address (eax)
+    alignx      16, 7
+.columnloop:
+
+    movdqa      xmm5, XMMWORD [ebx]     ; xmm5=Cb(0123456789ABCDEF)
+    movdqa      xmm1, XMMWORD [edx]     ; xmm1=Cr(0123456789ABCDEF)
+
+    pcmpeqw     xmm4, xmm4
+    pcmpeqw     xmm7, xmm7
+    psrlw       xmm4, BYTE_BIT
+    psllw       xmm7, 7                 ; xmm7={0xFF80 0xFF80 0xFF80 0xFF80 ..}
+    movdqa      xmm0, xmm4              ; xmm0=xmm4={0xFF 0x00 0xFF 0x00 ..}
+
+    pand        xmm4, xmm5              ; xmm4=Cb(02468ACE)=CbE
+    psrlw       xmm5, BYTE_BIT          ; xmm5=Cb(13579BDF)=CbO
+    pand        xmm0, xmm1              ; xmm0=Cr(02468ACE)=CrE
+    psrlw       xmm1, BYTE_BIT          ; xmm1=Cr(13579BDF)=CrO
+
+    paddw       xmm4, xmm7
+    paddw       xmm5, xmm7
+    paddw       xmm0, xmm7
+    paddw       xmm1, xmm7
+
+    ; (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
+
+    movdqa      xmm2, xmm4              ; xmm2=CbE
+    movdqa      xmm3, xmm5              ; xmm3=CbO
+    paddw       xmm4, xmm4              ; xmm4=2*CbE
+    paddw       xmm5, xmm5              ; xmm5=2*CbO
+    movdqa      xmm6, xmm0              ; xmm6=CrE
+    movdqa      xmm7, xmm1              ; xmm7=CrO
+    paddw       xmm0, xmm0              ; xmm0=2*CrE
+    paddw       xmm1, xmm1              ; xmm1=2*CrO
+
+    pmulhw      xmm4, [GOTOFF(eax,PW_MF0228)]  ; xmm4=(2*CbE * -FIX(0.22800))
+    pmulhw      xmm5, [GOTOFF(eax,PW_MF0228)]  ; xmm5=(2*CbO * -FIX(0.22800))
+    pmulhw      xmm0, [GOTOFF(eax,PW_F0402)]   ; xmm0=(2*CrE * FIX(0.40200))
+    pmulhw      xmm1, [GOTOFF(eax,PW_F0402)]   ; xmm1=(2*CrO * FIX(0.40200))
+
+    paddw       xmm4, [GOTOFF(eax,PW_ONE)]
+    paddw       xmm5, [GOTOFF(eax,PW_ONE)]
+    psraw       xmm4, 1                 ; xmm4=(CbE * -FIX(0.22800))
+    psraw       xmm5, 1                 ; xmm5=(CbO * -FIX(0.22800))
+    paddw       xmm0, [GOTOFF(eax,PW_ONE)]
+    paddw       xmm1, [GOTOFF(eax,PW_ONE)]
+    psraw       xmm0, 1                 ; xmm0=(CrE * FIX(0.40200))
+    psraw       xmm1, 1                 ; xmm1=(CrO * FIX(0.40200))
+
+    paddw       xmm4, xmm2
+    paddw       xmm5, xmm3
+    paddw       xmm4, xmm2              ; xmm4=(CbE * FIX(1.77200))=(B-Y)E
+    paddw       xmm5, xmm3              ; xmm5=(CbO * FIX(1.77200))=(B-Y)O
+    paddw       xmm0, xmm6              ; xmm0=(CrE * FIX(1.40200))=(R-Y)E
+    paddw       xmm1, xmm7              ; xmm1=(CrO * FIX(1.40200))=(R-Y)O
+
+    movdqa      XMMWORD [wk(0)], xmm4   ; wk(0)=(B-Y)E
+    movdqa      XMMWORD [wk(1)], xmm5   ; wk(1)=(B-Y)O
+
+    movdqa      xmm4, xmm2
+    movdqa      xmm5, xmm3
+    punpcklwd   xmm2, xmm6
+    punpckhwd   xmm4, xmm6
+    pmaddwd     xmm2, [GOTOFF(eax,PW_MF0344_F0285)]
+    pmaddwd     xmm4, [GOTOFF(eax,PW_MF0344_F0285)]
+    punpcklwd   xmm3, xmm7
+    punpckhwd   xmm5, xmm7
+    pmaddwd     xmm3, [GOTOFF(eax,PW_MF0344_F0285)]
+    pmaddwd     xmm5, [GOTOFF(eax,PW_MF0344_F0285)]
+
+    paddd       xmm2, [GOTOFF(eax,PD_ONEHALF)]
+    paddd       xmm4, [GOTOFF(eax,PD_ONEHALF)]
+    psrad       xmm2, SCALEBITS
+    psrad       xmm4, SCALEBITS
+    paddd       xmm3, [GOTOFF(eax,PD_ONEHALF)]
+    paddd       xmm5, [GOTOFF(eax,PD_ONEHALF)]
+    psrad       xmm3, SCALEBITS
+    psrad       xmm5, SCALEBITS
+
+    packssdw    xmm2, xmm4              ; xmm2=CbE*-FIX(0.344)+CrE*FIX(0.285)
+    packssdw    xmm3, xmm5              ; xmm3=CbO*-FIX(0.344)+CrO*FIX(0.285)
+    psubw       xmm2, xmm6              ; xmm2=CbE*-FIX(0.344)+CrE*-FIX(0.714)=(G-Y)E
+    psubw       xmm3, xmm7              ; xmm3=CbO*-FIX(0.344)+CrO*-FIX(0.714)=(G-Y)O
+
+    movdqa      xmm5, XMMWORD [esi]     ; xmm5=Y(0123456789ABCDEF)
+
+    pcmpeqw     xmm4, xmm4
+    psrlw       xmm4, BYTE_BIT          ; xmm4={0xFF 0x00 0xFF 0x00 ..}
+    pand        xmm4, xmm5              ; xmm4=Y(02468ACE)=YE
+    psrlw       xmm5, BYTE_BIT          ; xmm5=Y(13579BDF)=YO
+
+    paddw       xmm0, xmm4              ; xmm0=((R-Y)E+YE)=RE=R(02468ACE)
+    paddw       xmm1, xmm5              ; xmm1=((R-Y)O+YO)=RO=R(13579BDF)
+    packuswb    xmm0, xmm0              ; xmm0=R(02468ACE********)
+    packuswb    xmm1, xmm1              ; xmm1=R(13579BDF********)
+
+    paddw       xmm2, xmm4              ; xmm2=((G-Y)E+YE)=GE=G(02468ACE)
+    paddw       xmm3, xmm5              ; xmm3=((G-Y)O+YO)=GO=G(13579BDF)
+    packuswb    xmm2, xmm2              ; xmm2=G(02468ACE********)
+    packuswb    xmm3, xmm3              ; xmm3=G(13579BDF********)
+
+    paddw       xmm4, XMMWORD [wk(0)]   ; xmm4=(YE+(B-Y)E)=BE=B(02468ACE)
+    paddw       xmm5, XMMWORD [wk(1)]   ; xmm5=(YO+(B-Y)O)=BO=B(13579BDF)
+    packuswb    xmm4, xmm4              ; xmm4=B(02468ACE********)
+    packuswb    xmm5, xmm5              ; xmm5=B(13579BDF********)
+
+%if RGB_PIXELSIZE == 3  ; ---------------
+
+    ; xmmA=(00 02 04 06 08 0A 0C 0E **), xmmB=(01 03 05 07 09 0B 0D 0F **)
+    ; xmmC=(10 12 14 16 18 1A 1C 1E **), xmmD=(11 13 15 17 19 1B 1D 1F **)
+    ; xmmE=(20 22 24 26 28 2A 2C 2E **), xmmF=(21 23 25 27 29 2B 2D 2F **)
+    ; xmmG=(** ** ** ** ** ** ** ** **), xmmH=(** ** ** ** ** ** ** ** **)
+
+    punpcklbw   xmmA, xmmC        ; xmmA=(00 10 02 12 04 14 06 16 08 18 0A 1A 0C 1C 0E 1E)
+    punpcklbw   xmmE, xmmB        ; xmmE=(20 01 22 03 24 05 26 07 28 09 2A 0B 2C 0D 2E 0F)
+    punpcklbw   xmmD, xmmF        ; xmmD=(11 21 13 23 15 25 17 27 19 29 1B 2B 1D 2D 1F 2F)
+
+    movdqa      xmmG, xmmA
+    movdqa      xmmH, xmmA
+    punpcklwd   xmmA, xmmE        ; xmmA=(00 10 20 01 02 12 22 03 04 14 24 05 06 16 26 07)
+    punpckhwd   xmmG, xmmE        ; xmmG=(08 18 28 09 0A 1A 2A 0B 0C 1C 2C 0D 0E 1E 2E 0F)
+
+    psrldq      xmmH, 2           ; xmmH=(02 12 04 14 06 16 08 18 0A 1A 0C 1C 0E 1E -- --)
+    psrldq      xmmE, 2           ; xmmE=(22 03 24 05 26 07 28 09 2A 0B 2C 0D 2E 0F -- --)
+
+    movdqa      xmmC, xmmD
+    movdqa      xmmB, xmmD
+    punpcklwd   xmmD, xmmH        ; xmmD=(11 21 02 12 13 23 04 14 15 25 06 16 17 27 08 18)
+    punpckhwd   xmmC, xmmH        ; xmmC=(19 29 0A 1A 1B 2B 0C 1C 1D 2D 0E 1E 1F 2F -- --)
+
+    psrldq      xmmB, 2           ; xmmB=(13 23 15 25 17 27 19 29 1B 2B 1D 2D 1F 2F -- --)
+
+    movdqa      xmmF, xmmE
+    punpcklwd   xmmE, xmmB        ; xmmE=(22 03 13 23 24 05 15 25 26 07 17 27 28 09 19 29)
+    punpckhwd   xmmF, xmmB        ; xmmF=(2A 0B 1B 2B 2C 0D 1D 2D 2E 0F 1F 2F -- -- -- --)
+
+    pshufd      xmmH, xmmA, 0x4E  ; xmmH=(04 14 24 05 06 16 26 07 00 10 20 01 02 12 22 03)
+    movdqa      xmmB, xmmE
+    punpckldq   xmmA, xmmD        ; xmmA=(00 10 20 01 11 21 02 12 02 12 22 03 13 23 04 14)
+    punpckldq   xmmE, xmmH        ; xmmE=(22 03 13 23 04 14 24 05 24 05 15 25 06 16 26 07)
+    punpckhdq   xmmD, xmmB        ; xmmD=(15 25 06 16 26 07 17 27 17 27 08 18 28 09 19 29)
+
+    pshufd      xmmH, xmmG, 0x4E  ; xmmH=(0C 1C 2C 0D 0E 1E 2E 0F 08 18 28 09 0A 1A 2A 0B)
+    movdqa      xmmB, xmmF
+    punpckldq   xmmG, xmmC        ; xmmG=(08 18 28 09 19 29 0A 1A 0A 1A 2A 0B 1B 2B 0C 1C)
+    punpckldq   xmmF, xmmH        ; xmmF=(2A 0B 1B 2B 0C 1C 2C 0D 2C 0D 1D 2D 0E 1E 2E 0F)
+    punpckhdq   xmmC, xmmB        ; xmmC=(1D 2D 0E 1E 2E 0F 1F 2F 1F 2F -- -- -- -- -- --)
+
+    punpcklqdq  xmmA, xmmE        ; xmmA=(00 10 20 01 11 21 02 12 22 03 13 23 04 14 24 05)
+    punpcklqdq  xmmD, xmmG        ; xmmD=(15 25 06 16 26 07 17 27 08 18 28 09 19 29 0A 1A)
+    punpcklqdq  xmmF, xmmC        ; xmmF=(2A 0B 1B 2B 0C 1C 2C 0D 1D 2D 0E 1E 2E 0F 1F 2F)
+
+    cmp         ecx, byte SIZEOF_XMMWORD
+    jb          short .column_st32
+
+    test        edi, SIZEOF_XMMWORD-1
+    jnz         short .out1
+    ; --(aligned)-------------------
+    movntdq     XMMWORD [edi+0*SIZEOF_XMMWORD], xmmA
+    movntdq     XMMWORD [edi+1*SIZEOF_XMMWORD], xmmD
+    movntdq     XMMWORD [edi+2*SIZEOF_XMMWORD], xmmF
+    jmp         short .out0
+.out1:  ; --(unaligned)-----------------
+    movdqu      XMMWORD [edi+0*SIZEOF_XMMWORD], xmmA
+    movdqu      XMMWORD [edi+1*SIZEOF_XMMWORD], xmmD
+    movdqu      XMMWORD [edi+2*SIZEOF_XMMWORD], xmmF
+.out0:
+    add         edi, byte RGB_PIXELSIZE*SIZEOF_XMMWORD  ; outptr
+    sub         ecx, byte SIZEOF_XMMWORD
+    jz          near .nextrow
+
+    add         esi, byte SIZEOF_XMMWORD  ; inptr0
+    add         ebx, byte SIZEOF_XMMWORD  ; inptr1
+    add         edx, byte SIZEOF_XMMWORD  ; inptr2
+    jmp         near .columnloop
+    alignx      16, 7
+
+.column_st32:
+    lea         ecx, [ecx+ecx*2]        ; imul ecx, RGB_PIXELSIZE
+    cmp         ecx, byte 2*SIZEOF_XMMWORD
+    jb          short .column_st16
+    movdqu      XMMWORD [edi+0*SIZEOF_XMMWORD], xmmA
+    movdqu      XMMWORD [edi+1*SIZEOF_XMMWORD], xmmD
+    add         edi, byte 2*SIZEOF_XMMWORD  ; outptr
+    movdqa      xmmA, xmmF
+    sub         ecx, byte 2*SIZEOF_XMMWORD
+    jmp         short .column_st15
+.column_st16:
+    cmp         ecx, byte SIZEOF_XMMWORD
+    jb          short .column_st15
+    movdqu      XMMWORD [edi+0*SIZEOF_XMMWORD], xmmA
+    add         edi, byte SIZEOF_XMMWORD    ; outptr
+    movdqa      xmmA, xmmD
+    sub         ecx, byte SIZEOF_XMMWORD
+.column_st15:
+    ; Store the lower 8 bytes of xmmA to the output when it has enough
+    ; space.
+    cmp         ecx, byte SIZEOF_MMWORD
+    jb          short .column_st7
+    movq        XMM_MMWORD [edi], xmmA
+    add         edi, byte SIZEOF_MMWORD
+    sub         ecx, byte SIZEOF_MMWORD
+    psrldq      xmmA, SIZEOF_MMWORD
+.column_st7:
+    ; Store the lower 4 bytes of xmmA to the output when it has enough
+    ; space.
+    cmp         ecx, byte SIZEOF_DWORD
+    jb          short .column_st3
+    movd        XMM_DWORD [edi], xmmA
+    add         edi, byte SIZEOF_DWORD
+    sub         ecx, byte SIZEOF_DWORD
+    psrldq      xmmA, SIZEOF_DWORD
+.column_st3:
+    ; Store the lower 2 bytes of eax to the output when it has enough
+    ; space.
+    movd        eax, xmmA
+    cmp         ecx, byte SIZEOF_WORD
+    jb          short .column_st1
+    mov         word [edi], ax
+    add         edi, byte SIZEOF_WORD
+    sub         ecx, byte SIZEOF_WORD
+    shr         eax, 16
+.column_st1:
+    ; Store the lower 1 byte of eax to the output when it has enough
+    ; space.
+    test        ecx, ecx
+    jz          short .nextrow
+    mov         byte [edi], al
+
+%else  ; RGB_PIXELSIZE == 4 ; -----------
+
+%ifdef RGBX_FILLER_0XFF
+    pcmpeqb     xmm6, xmm6              ; xmm6=XE=X(02468ACE********)
+    pcmpeqb     xmm7, xmm7              ; xmm7=XO=X(13579BDF********)
+%else
+    pxor        xmm6, xmm6              ; xmm6=XE=X(02468ACE********)
+    pxor        xmm7, xmm7              ; xmm7=XO=X(13579BDF********)
+%endif
+    ; xmmA=(00 02 04 06 08 0A 0C 0E **), xmmB=(01 03 05 07 09 0B 0D 0F **)
+    ; xmmC=(10 12 14 16 18 1A 1C 1E **), xmmD=(11 13 15 17 19 1B 1D 1F **)
+    ; xmmE=(20 22 24 26 28 2A 2C 2E **), xmmF=(21 23 25 27 29 2B 2D 2F **)
+    ; xmmG=(30 32 34 36 38 3A 3C 3E **), xmmH=(31 33 35 37 39 3B 3D 3F **)
+
+    punpcklbw   xmmA, xmmC  ; xmmA=(00 10 02 12 04 14 06 16 08 18 0A 1A 0C 1C 0E 1E)
+    punpcklbw   xmmE, xmmG  ; xmmE=(20 30 22 32 24 34 26 36 28 38 2A 3A 2C 3C 2E 3E)
+    punpcklbw   xmmB, xmmD  ; xmmB=(01 11 03 13 05 15 07 17 09 19 0B 1B 0D 1D 0F 1F)
+    punpcklbw   xmmF, xmmH  ; xmmF=(21 31 23 33 25 35 27 37 29 39 2B 3B 2D 3D 2F 3F)
+
+    movdqa      xmmC, xmmA
+    punpcklwd   xmmA, xmmE  ; xmmA=(00 10 20 30 02 12 22 32 04 14 24 34 06 16 26 36)
+    punpckhwd   xmmC, xmmE  ; xmmC=(08 18 28 38 0A 1A 2A 3A 0C 1C 2C 3C 0E 1E 2E 3E)
+    movdqa      xmmG, xmmB
+    punpcklwd   xmmB, xmmF  ; xmmB=(01 11 21 31 03 13 23 33 05 15 25 35 07 17 27 37)
+    punpckhwd   xmmG, xmmF  ; xmmG=(09 19 29 39 0B 1B 2B 3B 0D 1D 2D 3D 0F 1F 2F 3F)
+
+    movdqa      xmmD, xmmA
+    punpckldq   xmmA, xmmB  ; xmmA=(00 10 20 30 01 11 21 31 02 12 22 32 03 13 23 33)
+    punpckhdq   xmmD, xmmB  ; xmmD=(04 14 24 34 05 15 25 35 06 16 26 36 07 17 27 37)
+    movdqa      xmmH, xmmC
+    punpckldq   xmmC, xmmG  ; xmmC=(08 18 28 38 09 19 29 39 0A 1A 2A 3A 0B 1B 2B 3B)
+    punpckhdq   xmmH, xmmG  ; xmmH=(0C 1C 2C 3C 0D 1D 2D 3D 0E 1E 2E 3E 0F 1F 2F 3F)
+
+    cmp         ecx, byte SIZEOF_XMMWORD
+    jb          short .column_st32
+
+    test        edi, SIZEOF_XMMWORD-1
+    jnz         short .out1
+    ; --(aligned)-------------------
+    movntdq     XMMWORD [edi+0*SIZEOF_XMMWORD], xmmA
+    movntdq     XMMWORD [edi+1*SIZEOF_XMMWORD], xmmD
+    movntdq     XMMWORD [edi+2*SIZEOF_XMMWORD], xmmC
+    movntdq     XMMWORD [edi+3*SIZEOF_XMMWORD], xmmH
+    jmp         short .out0
+.out1:  ; --(unaligned)-----------------
+    movdqu      XMMWORD [edi+0*SIZEOF_XMMWORD], xmmA
+    movdqu      XMMWORD [edi+1*SIZEOF_XMMWORD], xmmD
+    movdqu      XMMWORD [edi+2*SIZEOF_XMMWORD], xmmC
+    movdqu      XMMWORD [edi+3*SIZEOF_XMMWORD], xmmH
+.out0:
+    add         edi, byte RGB_PIXELSIZE*SIZEOF_XMMWORD  ; outptr
+    sub         ecx, byte SIZEOF_XMMWORD
+    jz          near .nextrow
+
+    add         esi, byte SIZEOF_XMMWORD  ; inptr0
+    add         ebx, byte SIZEOF_XMMWORD  ; inptr1
+    add         edx, byte SIZEOF_XMMWORD  ; inptr2
+    jmp         near .columnloop
+    alignx      16, 7
+
+.column_st32:
+    cmp         ecx, byte SIZEOF_XMMWORD/2
+    jb          short .column_st16
+    movdqu      XMMWORD [edi+0*SIZEOF_XMMWORD], xmmA
+    movdqu      XMMWORD [edi+1*SIZEOF_XMMWORD], xmmD
+    add         edi, byte 2*SIZEOF_XMMWORD  ; outptr
+    movdqa      xmmA, xmmC
+    movdqa      xmmD, xmmH
+    sub         ecx, byte SIZEOF_XMMWORD/2
+.column_st16:
+    cmp         ecx, byte SIZEOF_XMMWORD/4
+    jb          short .column_st15
+    movdqu      XMMWORD [edi+0*SIZEOF_XMMWORD], xmmA
+    add         edi, byte SIZEOF_XMMWORD    ; outptr
+    movdqa      xmmA, xmmD
+    sub         ecx, byte SIZEOF_XMMWORD/4
+.column_st15:
+    ; Store two pixels (8 bytes) of xmmA to the output when it has enough
+    ; space.
+    cmp         ecx, byte SIZEOF_XMMWORD/8
+    jb          short .column_st7
+    movq        XMM_MMWORD [edi], xmmA
+    add         edi, byte SIZEOF_XMMWORD/8*4
+    sub         ecx, byte SIZEOF_XMMWORD/8
+    psrldq      xmmA, SIZEOF_XMMWORD/8*4
+.column_st7:
+    ; Store one pixel (4 bytes) of xmmA to the output when it has enough
+    ; space.
+    test        ecx, ecx
+    jz          short .nextrow
+    movd        XMM_DWORD [edi], xmmA
+
+%endif  ; RGB_PIXELSIZE ; ---------------
+
+    alignx      16, 7
+
+.nextrow:
+    pop         ecx
+    pop         esi
+    pop         ebx
+    pop         edx
+    pop         edi
+    pop         eax
+
+    add         esi, byte SIZEOF_JSAMPROW
+    add         ebx, byte SIZEOF_JSAMPROW
+    add         edx, byte SIZEOF_JSAMPROW
+    add         edi, byte SIZEOF_JSAMPROW  ; output_buf
+    dec         eax                        ; num_rows
+    jg          near .rowloop
+
+    sfence                              ; flush the write buffer
+
+.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