1/* 2 * ARM NEON optimised integer operations 3 * Copyright (c) 2009 Konstantin Shishkov 4 * 5 * This file is part of FFmpeg. 6 * 7 * FFmpeg is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2.1 of the License, or (at your option) any later version. 11 * 12 * FFmpeg is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with FFmpeg; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 */ 21 22#include "libavutil/arm/asm.S" 23 24function ff_scalarproduct_int16_neon, export=1 25 vmov.i16 q0, #0 26 vmov.i16 q1, #0 27 vmov.i16 q2, #0 28 vmov.i16 q3, #0 291: vld1.16 {d16-d17}, [r0]! 30 vld1.16 {d20-d21}, [r1,:128]! 31 vmlal.s16 q0, d16, d20 32 vld1.16 {d18-d19}, [r0]! 33 vmlal.s16 q1, d17, d21 34 vld1.16 {d22-d23}, [r1,:128]! 35 vmlal.s16 q2, d18, d22 36 vmlal.s16 q3, d19, d23 37 subs r2, r2, #16 38 bgt 1b 39 40 vpadd.s32 d16, d0, d1 41 vpadd.s32 d17, d2, d3 42 vpadd.s32 d18, d4, d5 43 vpadd.s32 d19, d6, d7 44 vpadd.s32 d0, d16, d17 45 vpadd.s32 d1, d18, d19 46 vpadd.s32 d2, d0, d1 47 vpaddl.s32 d3, d2 48 vmov.32 r0, d3[0] 49 bx lr 50endfunc 51 52