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libavutil/lls.h

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00001 /*
00002  * linear least squares model
00003  *
00004  * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
00005  *
00006  * This file is part of FFmpeg.
00007  *
00008  * FFmpeg is free software; you can redistribute it and/or
00009  * modify it under the terms of the GNU Lesser General Public
00010  * License as published by the Free Software Foundation; either
00011  * version 2.1 of the License, or (at your option) any later version.
00012  *
00013  * FFmpeg is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016  * Lesser General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU Lesser General Public
00019  * License along with FFmpeg; if not, write to the Free Software
00020  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00021  */
00022 
00023 #ifndef AVUTIL_LLS_H
00024 #define AVUTIL_LLS_H
00025 
00026 #define MAX_VARS 32
00027 
00028 //FIXME avoid direct access to LLSModel from outside
00029 
00033 typedef struct LLSModel{
00034     double covariance[MAX_VARS+1][MAX_VARS+1];
00035     double coeff[MAX_VARS][MAX_VARS];
00036     double variance[MAX_VARS];
00037     int indep_count;
00038 }LLSModel;
00039 
00040 void av_init_lls(LLSModel *m, int indep_count);
00041 void av_update_lls(LLSModel *m, double *param, double decay);
00042 void av_solve_lls(LLSModel *m, double threshold, int min_order);
00043 double av_evaluate_lls(LLSModel *m, double *param, int order);
00044 
00045 #endif /* AVUTIL_LLS_H */

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