;/************************************************************************** ; * ; * XVID MPEG-4 VIDEO CODEC ; * mmx cbp calc ; * ; * This program is an implementation of a part of one or more MPEG-4 ; * Video tools as specified in ISO/IEC 14496-2 standard. Those intending ; * to use this software module in hardware or software products are ; * advised that its use may infringe existing patents or copyrights, and ; * any such use would be at such party's own risk. The original ; * developer of this software module and his/her company, and subsequent ; * editors and their companies, will have no liability for use of this ; * software or modifications or derivatives thereof. ; * ; * 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., 675 Mass Ave, Cambridge, MA 02139, USA. ; * ; *************************************************************************/ ;/************************************************************************** ; * ; * History: ; * ; * 14.06.2002 some further tweaks by -Skal- ; * 24.11.2001 inital version; (c)2001 peter ross ; * ; *************************************************************************/ bits 32 section .data %macro cglobal 1 %ifdef PREFIX global _%1 %define %1 _%1 %else global %1 %endif %endmacro align 16 ignore_dc dw 0, -1, -1, -1, -1, -1, -1, -1 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