/* * Copyright (c) 2009 Mans Rullgard <mans@mansr.com> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "libavutil/arm/asm.S" function ff_pix_norm1_armv6, export=1 push {r4-r6, lr} mov r12, #16 mov lr, #0 1: ldm r0, {r2-r5} uxtb16 r6, r2 uxtb16 r2, r2, ror #8 smlad lr, r6, r6, lr uxtb16 r6, r3 smlad lr, r2, r2, lr uxtb16 r3, r3, ror #8 smlad lr, r6, r6, lr uxtb16 r6, r4 smlad lr, r3, r3, lr uxtb16 r4, r4, ror #8 smlad lr, r6, r6, lr uxtb16 r6, r5 smlad lr, r4, r4, lr uxtb16 r5, r5, ror #8 smlad lr, r6, r6, lr subs r12, r12, #1 add r0, r0, r1 smlad lr, r5, r5, lr bgt 1b mov r0, lr pop {r4-r6, pc} endfunc function ff_pix_sum_armv6, export=1 push {r4-r7, lr} mov r12, #16 mov r2, #0 mov r3, #0 mov lr, #0 ldr r4, [r0] 1: subs r12, r12, #1 ldr r5, [r0, #4] usada8 r2, r4, lr, r2 ldr r6, [r0, #8] usada8 r3, r5, lr, r3 ldr r7, [r0, #12] usada8 r2, r6, lr, r2 beq 2f ldr_pre r4, r0, r1 usada8 r3, r7, lr, r3 bgt 1b 2: usada8 r3, r7, lr, r3 add r0, r2, r3 pop {r4-r7, pc} endfunc