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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * linear least squares model |
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| 3 | * |
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| 4 | * Copyright (c) 2006 Michael Niedermayer |
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| 5 | * |
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| 6 | * This file is part of FFmpeg. |
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| 7 | * |
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| 8 | * FFmpeg is free software; you can redistribute it and/or |
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| 9 | * modify it under the terms of the GNU Lesser General Public |
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| 10 | * License as published by the Free Software Foundation; either |
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| 11 | * version 2.1 of the License, or (at your option) any later version. |
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| 12 | * |
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| 13 | * FFmpeg is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 16 | * Lesser General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU Lesser General Public |
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| 19 | * License along with FFmpeg; if not, write to the Free Software |
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| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 21 | */ |
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| 22 | |||
| 23 | #ifndef AVUTIL_LLS_H |
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| 24 | #define AVUTIL_LLS_H |
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| 25 | |||
| 26 | #include "version.h" |
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| 27 | |||
| 28 | #define MAX_VARS 32 |
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| 29 | |||
| 30 | //FIXME avoid direct access to LLSModel from outside |
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| 31 | |||
| 32 | /** |
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| 33 | * Linear least squares model. |
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| 34 | */ |
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| 35 | typedef struct LLSModel { |
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| 36 | double covariance[MAX_VARS + 1][MAX_VARS + 1]; |
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| 37 | double coeff[MAX_VARS][MAX_VARS]; |
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| 38 | double variance[MAX_VARS]; |
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| 39 | int indep_count; |
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| 40 | } LLSModel; |
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| 41 | |||
| 42 | void avpriv_init_lls(LLSModel *m, int indep_count); |
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| 43 | void avpriv_update_lls(LLSModel *m, double *param, double decay); |
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| 44 | void avpriv_solve_lls(LLSModel *m, double threshold, unsigned short min_order); |
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| 45 | double avpriv_evaluate_lls(LLSModel *m, double *param, int order); |
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| 46 | |||
| 47 | #if FF_API_LLS_PRIVATE |
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| 48 | void av_init_lls(LLSModel *m, int indep_count); |
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| 49 | void av_update_lls(LLSModel *m, double *param, double decay); |
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| 50 | void av_solve_lls(LLSModel *m, double threshold, int min_order); |
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| 51 | double av_evaluate_lls(LLSModel *m, double *param, int order); |
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| 52 | #endif /* FF_API_LLS_PRIVATE */ |
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| 53 | |||
| 54 | #endif /* AVUTIL_LLS_H */ |