; ; jdcolext.asm - colorspace conversion (MMX) ; ; Copyright 2009 Pierre Ossman for Cendio AB ; Copyright (C) 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_mmx(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_MMWORD ; mmword wk[WK_NUM] %define WK_NUM 2 %define gotptr wk(0) - SIZEOF_POINTER ; void * gotptr align 32 GLOBAL_FUNCTION(jsimd_ycc_rgb_convert_mmx) EXTN(jsimd_ycc_rgb_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 [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: movq mm5, MMWORD [ebx] ; mm5=Cb(01234567) movq mm1, MMWORD [edx] ; mm1=Cr(01234567) pcmpeqw mm4, mm4 pcmpeqw mm7, mm7 psrlw mm4, BYTE_BIT psllw mm7, 7 ; mm7={0xFF80 0xFF80 0xFF80 0xFF80} movq mm0, mm4 ; mm0=mm4={0xFF 0x00 0xFF 0x00 ..} pand mm4, mm5 ; mm4=Cb(0246)=CbE psrlw mm5, BYTE_BIT ; mm5=Cb(1357)=CbO pand mm0, mm1 ; mm0=Cr(0246)=CrE psrlw mm1, BYTE_BIT ; mm1=Cr(1357)=CrO paddw mm4, mm7 paddw mm5, mm7 paddw mm0, mm7 paddw mm1, mm7 ; (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 mm2, mm4 ; mm2=CbE movq mm3, mm5 ; mm3=CbO paddw mm4, mm4 ; mm4=2*CbE paddw mm5, mm5 ; mm5=2*CbO movq mm6, mm0 ; mm6=CrE movq mm7, mm1 ; mm7=CrO paddw mm0, mm0 ; mm0=2*CrE paddw mm1, mm1 ; mm1=2*CrO pmulhw mm4, [GOTOFF(eax,PW_MF0228)] ; mm4=(2*CbE * -FIX(0.22800)) pmulhw mm5, [GOTOFF(eax,PW_MF0228)] ; mm5=(2*CbO * -FIX(0.22800)) pmulhw mm0, [GOTOFF(eax,PW_F0402)] ; mm0=(2*CrE * FIX(0.40200)) pmulhw mm1, [GOTOFF(eax,PW_F0402)] ; mm1=(2*CrO * FIX(0.40200)) paddw mm4, [GOTOFF(eax,PW_ONE)] paddw mm5, [GOTOFF(eax,PW_ONE)] psraw mm4, 1 ; mm4=(CbE * -FIX(0.22800)) psraw mm5, 1 ; mm5=(CbO * -FIX(0.22800)) paddw mm0, [GOTOFF(eax,PW_ONE)] paddw mm1, [GOTOFF(eax,PW_ONE)] psraw mm0, 1 ; mm0=(CrE * FIX(0.40200)) psraw mm1, 1 ; mm1=(CrO * FIX(0.40200)) paddw mm4, mm2 paddw mm5, mm3 paddw mm4, mm2 ; mm4=(CbE * FIX(1.77200))=(B-Y)E paddw mm5, mm3 ; mm5=(CbO * FIX(1.77200))=(B-Y)O paddw mm0, mm6 ; mm0=(CrE * FIX(1.40200))=(R-Y)E paddw mm1, mm7 ; mm1=(CrO * FIX(1.40200))=(R-Y)O movq MMWORD [wk(0)], mm4 ; wk(0)=(B-Y)E movq MMWORD [wk(1)], mm5 ; wk(1)=(B-Y)O movq mm4, mm2 movq mm5, mm3 punpcklwd mm2, mm6 punpckhwd mm4, mm6 pmaddwd mm2, [GOTOFF(eax,PW_MF0344_F0285)] pmaddwd mm4, [GOTOFF(eax,PW_MF0344_F0285)] punpcklwd mm3, mm7 punpckhwd mm5, mm7 pmaddwd mm3, [GOTOFF(eax,PW_MF0344_F0285)] pmaddwd mm5, [GOTOFF(eax,PW_MF0344_F0285)] paddd mm2, [GOTOFF(eax,PD_ONEHALF)] paddd mm4, [GOTOFF(eax,PD_ONEHALF)] psrad mm2, SCALEBITS psrad mm4, SCALEBITS paddd mm3, [GOTOFF(eax,PD_ONEHALF)] paddd mm5, [GOTOFF(eax,PD_ONEHALF)] psrad mm3, SCALEBITS psrad mm5, SCALEBITS packssdw mm2, mm4 ; mm2=CbE*-FIX(0.344)+CrE*FIX(0.285) packssdw mm3, mm5 ; mm3=CbO*-FIX(0.344)+CrO*FIX(0.285) psubw mm2, mm6 ; mm2=CbE*-FIX(0.344)+CrE*-FIX(0.714)=(G-Y)E psubw mm3, mm7 ; mm3=CbO*-FIX(0.344)+CrO*-FIX(0.714)=(G-Y)O movq mm5, MMWORD [esi] ; mm5=Y(01234567) pcmpeqw mm4, mm4 psrlw mm4, BYTE_BIT ; mm4={0xFF 0x00 0xFF 0x00 ..} pand mm4, mm5 ; mm4=Y(0246)=YE psrlw mm5, BYTE_BIT ; mm5=Y(1357)=YO paddw mm0, mm4 ; mm0=((R-Y)E+YE)=RE=(R0 R2 R4 R6) paddw mm1, mm5 ; mm1=((R-Y)O+YO)=RO=(R1 R3 R5 R7) packuswb mm0, mm0 ; mm0=(R0 R2 R4 R6 ** ** ** **) packuswb mm1, mm1 ; mm1=(R1 R3 R5 R7 ** ** ** **) paddw mm2, mm4 ; mm2=((G-Y)E+YE)=GE=(G0 G2 G4 G6) paddw mm3, mm5 ; mm3=((G-Y)O+YO)=GO=(G1 G3 G5 G7) packuswb mm2, mm2 ; mm2=(G0 G2 G4 G6 ** ** ** **) packuswb mm3, mm3 ; mm3=(G1 G3 G5 G7 ** ** ** **) paddw mm4, MMWORD [wk(0)] ; mm4=(YE+(B-Y)E)=BE=(B0 B2 B4 B6) paddw mm5, MMWORD [wk(1)] ; mm5=(YO+(B-Y)O)=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 short .nextrow add esi, byte SIZEOF_MMWORD ; inptr0 add ebx, byte SIZEOF_MMWORD ; inptr1 add edx, byte SIZEOF_MMWORD ; inptr2 add edi, byte RGB_PIXELSIZE*SIZEOF_MMWORD ; outptr 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 .nextrow 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 .nextrow add esi, byte SIZEOF_MMWORD ; inptr0 add ebx, byte SIZEOF_MMWORD ; inptr1 add edx, byte SIZEOF_MMWORD ; inptr2 add edi, byte RGB_PIXELSIZE*SIZEOF_MMWORD ; outptr 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 .nextrow movd dword [edi+0*SIZEOF_DWORD], mmA %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 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 32