lls_init.c (1609B)
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/attributes.h" 24 #include "libavutil/lls.h" 25 #include "libavutil/x86/cpu.h" 26 27 void ff_update_lls_sse2(LLSModel *m, const double *var); 28 void ff_update_lls_avx(LLSModel *m, const double *var); 29 void ff_update_lls_fma3(LLSModel *m, const double *var); 30 double ff_evaluate_lls_sse2(LLSModel *m, const double *var, int order); 31 32 av_cold void ff_init_lls_x86(LLSModel *m) 33 { 34 int cpu_flags = av_get_cpu_flags(); 35 if (EXTERNAL_SSE2(cpu_flags)) { 36 m->update_lls = ff_update_lls_sse2; 37 if (m->indep_count >= 4) 38 m->evaluate_lls = ff_evaluate_lls_sse2; 39 } 40 if (EXTERNAL_AVX_FAST(cpu_flags)) { 41 m->update_lls = ff_update_lls_avx; 42 } 43 if (EXTERNAL_FMA3_FAST(cpu_flags)) { 44 m->update_lls = ff_update_lls_fma3; 45 } 46 }