1/* 2 * linear least squares model 3 * 4 * Copyright (c) 2013 Loren Merritt 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with FFmpeg; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23#include "libavutil/lls2.h" 24#include "libavutil/x86/cpu.h" 25 26void ff_update_lls_sse2(LLSModel2 *m, double *var); 27void ff_update_lls_avx(LLSModel2 *m, double *var); 28double ff_evaluate_lls_sse2(LLSModel2 *m, double *var, int order); 29 30av_cold void ff_init_lls_x86(LLSModel2 *m) 31{ 32 int cpu_flags = av_get_cpu_flags(); 33 if (EXTERNAL_SSE2(cpu_flags)) { 34 m->update_lls = ff_update_lls_sse2; 35 if (m->indep_count >= 4) 36 m->evaluate_lls = ff_evaluate_lls_sse2; 37 } 38 if (EXTERNAL_AVX(cpu_flags)) { 39 m->update_lls = ff_update_lls_avx; 40 } 41} 42