| ; |
| ; 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 |
| ; |
| ; [TAB8] |
| |
| %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 |
