;/**************************************************************************** ; * ; * XVID MPEG-4 VIDEO CODEC ; * - MMX CBP computation - ; * ; * Copyright (C) 2001-2003 Peter Ross ; * 2002-2003 Pascal Massimino ; * ; * 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: cbp_mmx.asm,v 1.9 2004-03-22 22:36:23 edgomez Exp $ ; * ; ***************************************************************************/ BITS 32 ;============================================================================= ; Macros ;============================================================================= %macro cglobal 1 %ifdef PREFIX global _%1 %define %1 _%1 %else global %1 %endif %endmacro ;============================================================================= ; Local data ;============================================================================= %ifdef FORMAT_COFF SECTION .rodata data %else SECTION .rodata data align=16 %endif ALIGN 16 ignore_dc: dw 0, -1, -1, -1, -1, -1, -1, -1 ;============================================================================= ; Code ;============================================================================= SECTION .text cglobal calc_cbp_mmx ;----------------------------------------------------------------------------- ; uint32_t calc_cbp_mmx(const int16_t coeff[6][64]); ;----------------------------------------------------------------------------- ALIGN 16 calc_cbp_mmx: push ebx push esi mov esi, [esp + 8 + 4] ; coeff xor eax, eax ; cbp = 0 mov edx, (1 << 5) movq mm7, [ignore_dc] .loop movq mm0, [esi] movq mm1, [esi+8] pand mm0, mm7 por mm0, [esi+16] por mm1, [esi+24] por mm0, [esi+32] por mm1, [esi+40] por mm0, [esi+48] por mm1, [esi+56] por mm0, [esi+64] por mm1, [esi+72] por mm0, [esi+80] por mm1, [esi+88] por mm0, [esi+96] por mm1, [esi+104] por mm0, [esi+112] por mm1, [esi+120] por mm0, mm1 movq mm1, mm0 psrlq mm1, 32 lea esi, [esi + 128] por mm0, mm1 movd ebx, mm0 test ebx, ebx jz .next or eax, edx ; cbp |= 1 << (5-i) .next shr edx,1 jnc .loop pop esi pop ebx ret