405 lines
15 KiB
NASM
405 lines
15 KiB
NASM
;
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; jdcolext.asm - colorspace conversion (MMX)
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;
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; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
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; Copyright (C) 2016, D. R. Commander.
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;
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; Based on the 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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%include "jcolsamp.inc"
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; --------------------------------------------------------------------------
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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_ycc_rgb_convert_mmx(JDIMENSION out_width, JSAMPIMAGE input_buf,
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; JDIMENSION input_row, JSAMPARRAY output_buf,
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; int num_rows)
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;
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%define out_width(b) (b) + 8 ; JDIMENSION out_width
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%define input_buf(b) (b) + 12 ; JSAMPIMAGE input_buf
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%define input_row(b) (b) + 16 ; JDIMENSION input_row
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%define output_buf(b) (b) + 20 ; JSAMPARRAY output_buf
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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_MMWORD
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; mmword wk[WK_NUM]
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%define WK_NUM 2
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%define gotptr wk(0) - SIZEOF_POINTER ; void * gotptr
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align 32
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GLOBAL_FUNCTION(jsimd_ycc_rgb_convert_mmx)
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EXTN(jsimd_ycc_rgb_convert_mmx):
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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_MMWORD) ; align to 64 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 [out_width(eax)] ; num_cols
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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 edi, JSAMPIMAGE [input_buf(eax)]
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mov ecx, JDIMENSION [input_row(eax)]
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mov esi, JSAMPARRAY [edi+0*SIZEOF_JSAMPARRAY]
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mov ebx, JSAMPARRAY [edi+1*SIZEOF_JSAMPARRAY]
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mov edx, JSAMPARRAY [edi+2*SIZEOF_JSAMPARRAY]
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lea esi, [esi+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 edi, JSAMPARRAY [output_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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push eax
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push edi
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push edx
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push ebx
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push esi
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push ecx ; col
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mov esi, JSAMPROW [esi] ; inptr0
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mov ebx, JSAMPROW [ebx] ; inptr1
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mov edx, JSAMPROW [edx] ; inptr2
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mov edi, JSAMPROW [edi] ; outptr
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movpic eax, POINTER [gotptr] ; load GOT address (eax)
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alignx 16, 7
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.columnloop:
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movq mm5, MMWORD [ebx] ; mm5=Cb(01234567)
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movq mm1, MMWORD [edx] ; mm1=Cr(01234567)
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pcmpeqw mm4, mm4
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pcmpeqw mm7, mm7
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psrlw mm4, BYTE_BIT
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psllw mm7, 7 ; mm7={0xFF80 0xFF80 0xFF80 0xFF80}
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movq mm0, mm4 ; mm0=mm4={0xFF 0x00 0xFF 0x00 ..}
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pand mm4, mm5 ; mm4=Cb(0246)=CbE
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psrlw mm5, BYTE_BIT ; mm5=Cb(1357)=CbO
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pand mm0, mm1 ; mm0=Cr(0246)=CrE
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psrlw mm1, BYTE_BIT ; mm1=Cr(1357)=CrO
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paddw mm4, mm7
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paddw mm5, mm7
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paddw mm0, mm7
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paddw mm1, mm7
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; (Original)
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; R = Y + 1.40200 * Cr
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; G = Y - 0.34414 * Cb - 0.71414 * Cr
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; B = Y + 1.77200 * Cb
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;
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; (This implementation)
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; R = Y + 0.40200 * Cr + Cr
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; G = Y - 0.34414 * Cb + 0.28586 * Cr - Cr
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; B = Y - 0.22800 * Cb + Cb + Cb
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movq mm2, mm4 ; mm2=CbE
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movq mm3, mm5 ; mm3=CbO
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paddw mm4, mm4 ; mm4=2*CbE
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paddw mm5, mm5 ; mm5=2*CbO
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movq mm6, mm0 ; mm6=CrE
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movq mm7, mm1 ; mm7=CrO
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paddw mm0, mm0 ; mm0=2*CrE
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paddw mm1, mm1 ; mm1=2*CrO
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pmulhw mm4, [GOTOFF(eax,PW_MF0228)] ; mm4=(2*CbE * -FIX(0.22800))
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pmulhw mm5, [GOTOFF(eax,PW_MF0228)] ; mm5=(2*CbO * -FIX(0.22800))
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pmulhw mm0, [GOTOFF(eax,PW_F0402)] ; mm0=(2*CrE * FIX(0.40200))
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pmulhw mm1, [GOTOFF(eax,PW_F0402)] ; mm1=(2*CrO * FIX(0.40200))
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paddw mm4, [GOTOFF(eax,PW_ONE)]
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paddw mm5, [GOTOFF(eax,PW_ONE)]
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psraw mm4, 1 ; mm4=(CbE * -FIX(0.22800))
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psraw mm5, 1 ; mm5=(CbO * -FIX(0.22800))
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paddw mm0, [GOTOFF(eax,PW_ONE)]
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paddw mm1, [GOTOFF(eax,PW_ONE)]
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psraw mm0, 1 ; mm0=(CrE * FIX(0.40200))
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psraw mm1, 1 ; mm1=(CrO * FIX(0.40200))
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paddw mm4, mm2
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paddw mm5, mm3
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paddw mm4, mm2 ; mm4=(CbE * FIX(1.77200))=(B-Y)E
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paddw mm5, mm3 ; mm5=(CbO * FIX(1.77200))=(B-Y)O
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paddw mm0, mm6 ; mm0=(CrE * FIX(1.40200))=(R-Y)E
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paddw mm1, mm7 ; mm1=(CrO * FIX(1.40200))=(R-Y)O
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movq MMWORD [wk(0)], mm4 ; wk(0)=(B-Y)E
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movq MMWORD [wk(1)], mm5 ; wk(1)=(B-Y)O
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movq mm4, mm2
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movq mm5, mm3
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punpcklwd mm2, mm6
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punpckhwd mm4, mm6
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pmaddwd mm2, [GOTOFF(eax,PW_MF0344_F0285)]
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pmaddwd mm4, [GOTOFF(eax,PW_MF0344_F0285)]
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punpcklwd mm3, mm7
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punpckhwd mm5, mm7
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pmaddwd mm3, [GOTOFF(eax,PW_MF0344_F0285)]
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pmaddwd mm5, [GOTOFF(eax,PW_MF0344_F0285)]
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paddd mm2, [GOTOFF(eax,PD_ONEHALF)]
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paddd mm4, [GOTOFF(eax,PD_ONEHALF)]
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psrad mm2, SCALEBITS
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psrad mm4, SCALEBITS
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paddd mm3, [GOTOFF(eax,PD_ONEHALF)]
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paddd mm5, [GOTOFF(eax,PD_ONEHALF)]
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psrad mm3, SCALEBITS
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psrad mm5, SCALEBITS
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packssdw mm2, mm4 ; mm2=CbE*-FIX(0.344)+CrE*FIX(0.285)
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packssdw mm3, mm5 ; mm3=CbO*-FIX(0.344)+CrO*FIX(0.285)
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psubw mm2, mm6 ; mm2=CbE*-FIX(0.344)+CrE*-FIX(0.714)=(G-Y)E
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psubw mm3, mm7 ; mm3=CbO*-FIX(0.344)+CrO*-FIX(0.714)=(G-Y)O
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movq mm5, MMWORD [esi] ; mm5=Y(01234567)
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pcmpeqw mm4, mm4
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psrlw mm4, BYTE_BIT ; mm4={0xFF 0x00 0xFF 0x00 ..}
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pand mm4, mm5 ; mm4=Y(0246)=YE
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psrlw mm5, BYTE_BIT ; mm5=Y(1357)=YO
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paddw mm0, mm4 ; mm0=((R-Y)E+YE)=RE=(R0 R2 R4 R6)
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paddw mm1, mm5 ; mm1=((R-Y)O+YO)=RO=(R1 R3 R5 R7)
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packuswb mm0, mm0 ; mm0=(R0 R2 R4 R6 ** ** ** **)
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packuswb mm1, mm1 ; mm1=(R1 R3 R5 R7 ** ** ** **)
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paddw mm2, mm4 ; mm2=((G-Y)E+YE)=GE=(G0 G2 G4 G6)
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paddw mm3, mm5 ; mm3=((G-Y)O+YO)=GO=(G1 G3 G5 G7)
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packuswb mm2, mm2 ; mm2=(G0 G2 G4 G6 ** ** ** **)
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packuswb mm3, mm3 ; mm3=(G1 G3 G5 G7 ** ** ** **)
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paddw mm4, MMWORD [wk(0)] ; mm4=(YE+(B-Y)E)=BE=(B0 B2 B4 B6)
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paddw mm5, MMWORD [wk(1)] ; mm5=(YO+(B-Y)O)=BO=(B1 B3 B5 B7)
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packuswb mm4, mm4 ; mm4=(B0 B2 B4 B6 ** ** ** **)
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packuswb mm5, mm5 ; mm5=(B1 B3 B5 B7 ** ** ** **)
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%if RGB_PIXELSIZE == 3 ; ---------------
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; mmA=(00 02 04 06 ** ** ** **), mmB=(01 03 05 07 ** ** ** **)
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; mmC=(10 12 14 16 ** ** ** **), mmD=(11 13 15 17 ** ** ** **)
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; mmE=(20 22 24 26 ** ** ** **), mmF=(21 23 25 27 ** ** ** **)
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; mmG=(** ** ** ** ** ** ** **), mmH=(** ** ** ** ** ** ** **)
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punpcklbw mmA, mmC ; mmA=(00 10 02 12 04 14 06 16)
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punpcklbw mmE, mmB ; mmE=(20 01 22 03 24 05 26 07)
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punpcklbw mmD, mmF ; mmD=(11 21 13 23 15 25 17 27)
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movq mmG, mmA
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movq mmH, mmA
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punpcklwd mmA, mmE ; mmA=(00 10 20 01 02 12 22 03)
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punpckhwd mmG, mmE ; mmG=(04 14 24 05 06 16 26 07)
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psrlq mmH, 2*BYTE_BIT ; mmH=(02 12 04 14 06 16 -- --)
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psrlq mmE, 2*BYTE_BIT ; mmE=(22 03 24 05 26 07 -- --)
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movq mmC, mmD
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movq mmB, mmD
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punpcklwd mmD, mmH ; mmD=(11 21 02 12 13 23 04 14)
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punpckhwd mmC, mmH ; mmC=(15 25 06 16 17 27 -- --)
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psrlq mmB, 2*BYTE_BIT ; mmB=(13 23 15 25 17 27 -- --)
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movq mmF, mmE
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punpcklwd mmE, mmB ; mmE=(22 03 13 23 24 05 15 25)
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punpckhwd mmF, mmB ; mmF=(26 07 17 27 -- -- -- --)
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punpckldq mmA, mmD ; mmA=(00 10 20 01 11 21 02 12)
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punpckldq mmE, mmG ; mmE=(22 03 13 23 04 14 24 05)
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punpckldq mmC, mmF ; mmC=(15 25 06 16 26 07 17 27)
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cmp ecx, byte SIZEOF_MMWORD
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jb short .column_st16
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movq MMWORD [edi+0*SIZEOF_MMWORD], mmA
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movq MMWORD [edi+1*SIZEOF_MMWORD], mmE
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movq MMWORD [edi+2*SIZEOF_MMWORD], mmC
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sub ecx, byte SIZEOF_MMWORD
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jz short .nextrow
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add esi, byte SIZEOF_MMWORD ; inptr0
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add ebx, byte SIZEOF_MMWORD ; inptr1
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add edx, byte SIZEOF_MMWORD ; inptr2
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add edi, byte RGB_PIXELSIZE*SIZEOF_MMWORD ; outptr
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jmp near .columnloop
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alignx 16, 7
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.column_st16:
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lea ecx, [ecx+ecx*2] ; imul ecx, RGB_PIXELSIZE
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cmp ecx, byte 2*SIZEOF_MMWORD
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jb short .column_st8
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movq MMWORD [edi+0*SIZEOF_MMWORD], mmA
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movq MMWORD [edi+1*SIZEOF_MMWORD], mmE
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movq mmA, mmC
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sub ecx, byte 2*SIZEOF_MMWORD
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add edi, byte 2*SIZEOF_MMWORD
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jmp short .column_st4
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.column_st8:
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cmp ecx, byte SIZEOF_MMWORD
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jb short .column_st4
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movq MMWORD [edi+0*SIZEOF_MMWORD], mmA
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movq mmA, mmE
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sub ecx, byte SIZEOF_MMWORD
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add edi, byte SIZEOF_MMWORD
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.column_st4:
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movd eax, mmA
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cmp ecx, byte SIZEOF_DWORD
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jb short .column_st2
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mov dword [edi+0*SIZEOF_DWORD], eax
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psrlq mmA, DWORD_BIT
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movd eax, mmA
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sub ecx, byte SIZEOF_DWORD
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add edi, byte SIZEOF_DWORD
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.column_st2:
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cmp ecx, byte SIZEOF_WORD
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jb short .column_st1
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mov word [edi+0*SIZEOF_WORD], ax
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shr eax, WORD_BIT
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sub ecx, byte SIZEOF_WORD
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add edi, byte SIZEOF_WORD
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.column_st1:
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cmp ecx, byte SIZEOF_BYTE
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jb short .nextrow
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mov byte [edi+0*SIZEOF_BYTE], al
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%else ; RGB_PIXELSIZE == 4 ; -----------
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%ifdef RGBX_FILLER_0XFF
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pcmpeqb mm6, mm6 ; mm6=(X0 X2 X4 X6 ** ** ** **)
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pcmpeqb mm7, mm7 ; mm7=(X1 X3 X5 X7 ** ** ** **)
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%else
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pxor mm6, mm6 ; mm6=(X0 X2 X4 X6 ** ** ** **)
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pxor mm7, mm7 ; mm7=(X1 X3 X5 X7 ** ** ** **)
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%endif
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; mmA=(00 02 04 06 ** ** ** **), mmB=(01 03 05 07 ** ** ** **)
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; mmC=(10 12 14 16 ** ** ** **), mmD=(11 13 15 17 ** ** ** **)
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; mmE=(20 22 24 26 ** ** ** **), mmF=(21 23 25 27 ** ** ** **)
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; mmG=(30 32 34 36 ** ** ** **), mmH=(31 33 35 37 ** ** ** **)
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punpcklbw mmA, mmC ; mmA=(00 10 02 12 04 14 06 16)
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punpcklbw mmE, mmG ; mmE=(20 30 22 32 24 34 26 36)
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punpcklbw mmB, mmD ; mmB=(01 11 03 13 05 15 07 17)
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punpcklbw mmF, mmH ; mmF=(21 31 23 33 25 35 27 37)
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movq mmC, mmA
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punpcklwd mmA, mmE ; mmA=(00 10 20 30 02 12 22 32)
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punpckhwd mmC, mmE ; mmC=(04 14 24 34 06 16 26 36)
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movq mmG, mmB
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punpcklwd mmB, mmF ; mmB=(01 11 21 31 03 13 23 33)
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punpckhwd mmG, mmF ; mmG=(05 15 25 35 07 17 27 37)
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movq mmD, mmA
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punpckldq mmA, mmB ; mmA=(00 10 20 30 01 11 21 31)
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punpckhdq mmD, mmB ; mmD=(02 12 22 32 03 13 23 33)
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movq mmH, mmC
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punpckldq mmC, mmG ; mmC=(04 14 24 34 05 15 25 35)
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punpckhdq mmH, mmG ; mmH=(06 16 26 36 07 17 27 37)
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cmp ecx, byte SIZEOF_MMWORD
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jb short .column_st16
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movq MMWORD [edi+0*SIZEOF_MMWORD], mmA
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movq MMWORD [edi+1*SIZEOF_MMWORD], mmD
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movq MMWORD [edi+2*SIZEOF_MMWORD], mmC
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movq MMWORD [edi+3*SIZEOF_MMWORD], mmH
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sub ecx, byte SIZEOF_MMWORD
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jz short .nextrow
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add esi, byte SIZEOF_MMWORD ; inptr0
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add ebx, byte SIZEOF_MMWORD ; inptr1
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add edx, byte SIZEOF_MMWORD ; inptr2
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add edi, byte RGB_PIXELSIZE*SIZEOF_MMWORD ; outptr
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jmp near .columnloop
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alignx 16, 7
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.column_st16:
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cmp ecx, byte SIZEOF_MMWORD/2
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jb short .column_st8
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movq MMWORD [edi+0*SIZEOF_MMWORD], mmA
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movq MMWORD [edi+1*SIZEOF_MMWORD], mmD
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movq mmA, mmC
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movq mmD, mmH
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sub ecx, byte SIZEOF_MMWORD/2
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add edi, byte 2*SIZEOF_MMWORD
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.column_st8:
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cmp ecx, byte SIZEOF_MMWORD/4
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jb short .column_st4
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movq MMWORD [edi+0*SIZEOF_MMWORD], mmA
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movq mmA, mmD
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sub ecx, byte SIZEOF_MMWORD/4
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add edi, byte 1*SIZEOF_MMWORD
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.column_st4:
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cmp ecx, byte SIZEOF_MMWORD/8
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jb short .nextrow
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movd dword [edi+0*SIZEOF_DWORD], mmA
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%endif ; RGB_PIXELSIZE ; ---------------
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alignx 16, 7
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.nextrow:
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pop ecx
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pop esi
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pop ebx
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pop edx
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pop edi
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pop eax
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add esi, byte SIZEOF_JSAMPROW
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add ebx, byte SIZEOF_JSAMPROW
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add edx, byte SIZEOF_JSAMPROW
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add edi, byte SIZEOF_JSAMPROW ; output_buf
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dec eax ; num_rows
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jg near .rowloop
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emms ; empty MMX state
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.return:
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pop edi
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pop esi
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; pop edx ; need not be preserved
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; pop ecx ; need not be preserved
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pop ebx
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mov esp, ebp ; esp <- aligned ebp
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pop esp ; esp <- original ebp
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pop ebp
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ret
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; For some reason, the OS X linker does not honor the request to align the
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; segment unless we do this.
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align 32
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