sad_3dn.asm

wince下的xvidcore开发库,可用于MP4等视频播放开发

 ;/****************************************************************************
 ; *
 ; *  XVID MPEG-4 VIDEO CODEC
 ; *  - 3DNow sad operators w/o XMM instructions -
 ; *
 ; *  Copyright(C) 2002 Peter ross <[e-mail]>
 ; *
 ; *  This program is free software; you can redistribute it and/or modify it
 ; *  under the terms of the GNU General Public License as published by
 ; *  the Free Software Foundation; either version 2 of the License, or
 ; *  (at your option) any later version.
 ; *
 ; *  This program is distributed in the hope that it will be useful,
 ; *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 ; *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ; *  GNU General Public License for more details.
 ; *
 ; *  You should have received a copy of the GNU General Public License
 ; *  along with this program; if not, write to the Free Software
 ; *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 ; *
 ; * $Id: sad_3dn.asm,v 1.1 2005/07/21 09:09:02 klschoef Exp $
 ; *
 ; ***************************************************************************/
 
 BITS 32
 
 %macro cglobal 1
         %ifdef PREFIX
                 global _%1
                 %define %1 _%1
         %else
                 global %1
         %endif
 %endmacro
 
 ;=============================================================================
 ; Read only data
 ;=============================================================================
 
 %ifdef FORMAT_COFF
 SECTION .rodata data
 %else
 SECTION .rodata data align=16
 %endif
 
 ALIGN 16
 mmx_one:
         times 4 dw 1
 
 ;=============================================================================
 ; Helper macros
 ;=============================================================================
 %macro SADBI_16x16_3DN 0
   movq mm0, [eax] ; src
   movq mm2, [eax+8]
 
   movq mm1, [edx] ; ref1
   movq mm3, [edx+8]
   pavgusb mm1, [ebx] ; ref2
   lea edx, [edx+ecx]
   pavgusb mm3, [ebx+8]
   lea ebx, [ebx+ecx]
 
   movq mm4, mm0
   lea eax, [eax+ecx]
   psubusb mm0, mm1
   movq mm5, mm2
   psubusb mm2, mm3
 
   psubusb mm1, mm4
   por mm0, mm1
   psubusb mm3, mm5
   por mm2, mm3
 
   movq mm1, mm0
   movq mm3, mm2
 
   punpcklbw mm0,mm7
   punpckhbw mm1,mm7
   punpcklbw mm2,mm7
   punpckhbw mm3,mm7
 
   paddusw mm0,mm1
   paddusw mm2,mm3
   paddusw mm6,mm0
   paddusw mm6,mm2
 %endmacro
 
 %macro SADBI_8x8_3DN 0
   movq mm0, [eax] ; src
   movq mm2, [eax+ecx]
 
   movq mm1, [edx] ; ref1
   movq mm3, [edx+ecx]
   pavgusb mm1, [ebx] ; ref2
   lea edx, [edx+2*ecx]
   pavgusb mm3, [ebx+ecx]
   lea ebx, [ebx+2*ecx]
 
   movq mm4, mm0
   lea eax, [eax+2*ecx]
   psubusb mm0, mm1
   movq mm5, mm2
   psubusb mm2, mm3
 
   psubusb mm1, mm4
   por mm0, mm1
   psubusb mm3, mm5
   por mm2, mm3
 
   movq mm1, mm0
   movq mm3, mm2
 
   punpcklbw mm0,mm7
   punpckhbw mm1,mm7
   punpcklbw mm2,mm7
   punpckhbw mm3,mm7
 
   paddusw mm0,mm1
   paddusw mm2,mm3
   paddusw mm6,mm0
   paddusw mm6,mm2
 %endmacro
 
 ;=============================================================================
 ; Code
 ;=============================================================================
 
 SECTION .text
 
 cglobal  sad16bi_3dn
 cglobal  sad8bi_3dn
 
 ;-----------------------------------------------------------------------------
 ;
 ; uint32_t sad16bi_3dn(const uint8_t * const cur,
 ; const uint8_t * const ref1,
 ; const uint8_t * const ref2,
 ; const uint32_t stride);
 ;
 ;-----------------------------------------------------------------------------
 
 ALIGN 16
 sad16bi_3dn:
   push ebx
   mov eax, [esp+4+ 4] ; Src
   mov edx, [esp+4+ 8] ; Ref1
   mov ebx, [esp+4+12] ; Ref2
   mov ecx, [esp+4+16] ; Stride
 
   pxor mm6, mm6 ; accum2
   pxor mm7, mm7
 .Loop
   SADBI_16x16_3DN
   SADBI_16x16_3DN
   SADBI_16x16_3DN
   SADBI_16x16_3DN
   SADBI_16x16_3DN
   SADBI_16x16_3DN
   SADBI_16x16_3DN
   SADBI_16x16_3DN
 
   SADBI_16x16_3DN
   SADBI_16x16_3DN
   SADBI_16x16_3DN
   SADBI_16x16_3DN
   SADBI_16x16_3DN
   SADBI_16x16_3DN
   SADBI_16x16_3DN
   SADBI_16x16_3DN
 
   pmaddwd mm6, [mmx_one] ; collapse
   movq mm7, mm6
   psrlq mm7, 32
   paddd mm6, mm7
 
   movd eax, mm6
 
   pop ebx
 
   ret
 
 ;-----------------------------------------------------------------------------
 ;
 ; uint32_t sad8bi_3dn(const uint8_t * const cur,
 ; const uint8_t * const ref1,
 ; const uint8_t * const ref2,
 ; const uint32_t stride);
 ;
 ;-----------------------------------------------------------------------------
 
 ALIGN 16
 sad8bi_3dn:
   push ebx
   mov eax, [esp+4+ 4] ; Src
   mov edx, [esp+4+ 8] ; Ref1
   mov ebx, [esp+4+12] ; Ref2
   mov ecx, [esp+4+16] ; Stride
 
   pxor mm6, mm6 ; accum2
   pxor mm7, mm7
 .Loop
   SADBI_8x8_3DN
   SADBI_8x8_3DN
   SADBI_8x8_3DN
   SADBI_8x8_3DN
 
   pmaddwd mm6, [mmx_one] ; collapse
   movq mm7, mm6
   psrlq mm7, 32
   paddd mm6, mm7
 
   movd eax, mm6
 
   pop ebx
 
   ret