kc3-lang/libjpeg-turbo/jcqnt3dn.asm
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Hash : a2e6a9dd
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Date : 2006-02-04T00:00:00
IJG R6b with x86SIMD V1.02 Independent JPEG Group's JPEG software release 6b with x86 SIMD extension for IJG JPEG library version 1.02
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jcqnt3dn.asm
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; ; jcqnt3dn.asm - sample data conversion and quantization (3DNow! & MMX) ; ; 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 ; ; Last Modified : January 23, 2006 ; ; [TAB8] %include "jsimdext.inc" %include "jdct.inc" %ifdef DCT_FLOAT_SUPPORTED %ifdef JFDCT_FLT_3DNOW_MMX_SUPPORTED ; This module is specialized to the case DCTSIZE = 8. ; %if DCTSIZE != 8 %error "Sorry, this code only copes with 8x8 DCTs." %endif ; -------------------------------------------------------------------------- SECTION SEG_TEXT BITS 32 ; ; Load data into workspace, applying unsigned->signed conversion ; ; GLOBAL(void) ; jpeg_convsamp_flt_3dnow (JSAMPARRAY sample_data, JDIMENSION start_col, ; FAST_FLOAT * workspace); ; %define sample_data ebp+8 ; JSAMPARRAY sample_data %define start_col ebp+12 ; JDIMENSION start_col %define workspace ebp+16 ; FAST_FLOAT * workspace align 16 global EXTN(jpeg_convsamp_flt_3dnow) EXTN(jpeg_convsamp_flt_3dnow): push ebp mov ebp,esp push ebx ; push ecx ; need not be preserved ; push edx ; need not be preserved push esi push edi pcmpeqw mm7,mm7 psllw mm7,7 packsswb mm7,mm7 ; mm7 = PB_CENTERJSAMPLE (0x808080..) mov esi, JSAMPARRAY [sample_data] ; (JSAMPROW *) mov eax, JDIMENSION [start_col] mov edi, POINTER [workspace] ; (DCTELEM *) mov ecx, DCTSIZE/2 alignx 16,7 .convloop: mov ebx, JSAMPROW [esi+0*SIZEOF_JSAMPROW] ; (JSAMPLE *) mov edx, JSAMPROW [esi+1*SIZEOF_JSAMPROW] ; (JSAMPLE *) movq mm0, MMWORD [ebx+eax*SIZEOF_JSAMPLE] movq mm1, MMWORD [edx+eax*SIZEOF_JSAMPLE] psubb mm0,mm7 ; mm0=(01234567) psubb mm1,mm7 ; mm1=(89ABCDEF) punpcklbw mm2,mm0 ; mm2=(*0*1*2*3) punpckhbw mm0,mm0 ; mm0=(*4*5*6*7) punpcklbw mm3,mm1 ; mm3=(*8*9*A*B) punpckhbw mm1,mm1 ; mm1=(*C*D*E*F) punpcklwd mm4,mm2 ; mm4=(***0***1) punpckhwd mm2,mm2 ; mm2=(***2***3) punpcklwd mm5,mm0 ; mm5=(***4***5) punpckhwd mm0,mm0 ; mm0=(***6***7) psrad mm4,(DWORD_BIT-BYTE_BIT) ; mm4=(01) psrad mm2,(DWORD_BIT-BYTE_BIT) ; mm2=(23) pi2fd mm4,mm4 pi2fd mm2,mm2 psrad mm5,(DWORD_BIT-BYTE_BIT) ; mm5=(45) psrad mm0,(DWORD_BIT-BYTE_BIT) ; mm0=(67) pi2fd mm5,mm5 pi2fd mm0,mm0 movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_FAST_FLOAT)], mm4 movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_FAST_FLOAT)], mm2 movq MMWORD [MMBLOCK(0,2,edi,SIZEOF_FAST_FLOAT)], mm5 movq MMWORD [MMBLOCK(0,3,edi,SIZEOF_FAST_FLOAT)], mm0 punpcklwd mm6,mm3 ; mm6=(***8***9) punpckhwd mm3,mm3 ; mm3=(***A***B) punpcklwd mm4,mm1 ; mm4=(***C***D) punpckhwd mm1,mm1 ; mm1=(***E***F) psrad mm6,(DWORD_BIT-BYTE_BIT) ; mm6=(89) psrad mm3,(DWORD_BIT-BYTE_BIT) ; mm3=(AB) pi2fd mm6,mm6 pi2fd mm3,mm3 psrad mm4,(DWORD_BIT-BYTE_BIT) ; mm4=(CD) psrad mm1,(DWORD_BIT-BYTE_BIT) ; mm1=(EF) pi2fd mm4,mm4 pi2fd mm1,mm1 movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_FAST_FLOAT)], mm6 movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_FAST_FLOAT)], mm3 movq MMWORD [MMBLOCK(1,2,edi,SIZEOF_FAST_FLOAT)], mm4 movq MMWORD [MMBLOCK(1,3,edi,SIZEOF_FAST_FLOAT)], mm1 add esi, byte 2*SIZEOF_JSAMPROW add edi, byte 2*DCTSIZE*SIZEOF_FAST_FLOAT dec ecx jnz near .convloop femms ; empty MMX/3DNow! state pop edi pop esi ; pop edx ; need not be preserved ; pop ecx ; need not be preserved pop ebx pop ebp ret ; -------------------------------------------------------------------------- ; ; Quantize/descale the coefficients, and store into coef_block ; ; GLOBAL(void) ; jpeg_quantize_flt_3dnow (JCOEFPTR coef_block, FAST_FLOAT * divisors, ; FAST_FLOAT * workspace); ; %define coef_block ebp+8 ; JCOEFPTR coef_block %define divisors ebp+12 ; FAST_FLOAT * divisors %define workspace ebp+16 ; FAST_FLOAT * workspace align 16 global EXTN(jpeg_quantize_flt_3dnow) EXTN(jpeg_quantize_flt_3dnow): push ebp mov ebp,esp ; push ebx ; unused ; push ecx ; unused ; push edx ; need not be preserved push esi push edi mov eax, 0x4B400000 ; (float)0x00C00000 (rndint_magic) movd mm7,eax punpckldq mm7,mm7 ; mm7={12582912.0F 12582912.0F} mov esi, POINTER [workspace] mov edx, POINTER [divisors] mov edi, JCOEFPTR [coef_block] mov eax, DCTSIZE2/16 alignx 16,7 .quantloop: movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_FAST_FLOAT)] movq mm1, MMWORD [MMBLOCK(0,1,esi,SIZEOF_FAST_FLOAT)] pfmul mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_FAST_FLOAT)] pfmul mm1, MMWORD [MMBLOCK(0,1,edx,SIZEOF_FAST_FLOAT)] movq mm2, MMWORD [MMBLOCK(0,2,esi,SIZEOF_FAST_FLOAT)] movq mm3, MMWORD [MMBLOCK(0,3,esi,SIZEOF_FAST_FLOAT)] pfmul mm2, MMWORD [MMBLOCK(0,2,edx,SIZEOF_FAST_FLOAT)] pfmul mm3, MMWORD [MMBLOCK(0,3,edx,SIZEOF_FAST_FLOAT)] pfadd mm0,mm7 ; mm0=(00 ** 01 **) pfadd mm1,mm7 ; mm1=(02 ** 03 **) pfadd mm2,mm7 ; mm0=(04 ** 05 **) pfadd mm3,mm7 ; mm1=(06 ** 07 **) movq mm4,mm0 punpcklwd mm0,mm1 ; mm0=(00 02 ** **) punpckhwd mm4,mm1 ; mm4=(01 03 ** **) movq mm5,mm2 punpcklwd mm2,mm3 ; mm2=(04 06 ** **) punpckhwd mm5,mm3 ; mm5=(05 07 ** **) punpcklwd mm0,mm4 ; mm0=(00 01 02 03) punpcklwd mm2,mm5 ; mm2=(04 05 06 07) movq mm6, MMWORD [MMBLOCK(1,0,esi,SIZEOF_FAST_FLOAT)] movq mm1, MMWORD [MMBLOCK(1,1,esi,SIZEOF_FAST_FLOAT)] pfmul mm6, MMWORD [MMBLOCK(1,0,edx,SIZEOF_FAST_FLOAT)] pfmul mm1, MMWORD [MMBLOCK(1,1,edx,SIZEOF_FAST_FLOAT)] movq mm3, MMWORD [MMBLOCK(1,2,esi,SIZEOF_FAST_FLOAT)] movq mm4, MMWORD [MMBLOCK(1,3,esi,SIZEOF_FAST_FLOAT)] pfmul mm3, MMWORD [MMBLOCK(1,2,edx,SIZEOF_FAST_FLOAT)] pfmul mm4, MMWORD [MMBLOCK(1,3,edx,SIZEOF_FAST_FLOAT)] pfadd mm6,mm7 ; mm0=(10 ** 11 **) pfadd mm1,mm7 ; mm4=(12 ** 13 **) pfadd mm3,mm7 ; mm0=(14 ** 15 **) pfadd mm4,mm7 ; mm4=(16 ** 17 **) movq mm5,mm6 punpcklwd mm6,mm1 ; mm6=(10 12 ** **) punpckhwd mm5,mm1 ; mm5=(11 13 ** **) movq mm1,mm3 punpcklwd mm3,mm4 ; mm3=(14 16 ** **) punpckhwd mm1,mm4 ; mm1=(15 17 ** **) punpcklwd mm6,mm5 ; mm6=(10 11 12 13) punpcklwd mm3,mm1 ; mm3=(14 15 16 17) movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_JCOEF)], mm0 movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_JCOEF)], mm2 movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_JCOEF)], mm6 movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_JCOEF)], mm3 add esi, byte 16*SIZEOF_FAST_FLOAT add edx, byte 16*SIZEOF_FAST_FLOAT add edi, byte 16*SIZEOF_JCOEF dec eax jnz near .quantloop femms ; empty MMX/3DNow! state pop edi pop esi ; pop edx ; need not be preserved ; pop ecx ; unused ; pop ebx ; unused pop ebp ret %endif ; JFDCT_FLT_3DNOW_MMX_SUPPORTED %endif ; DCT_FLOAT_SUPPORTED