X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavutil%2Flls.h;h=27c0d5e3fe60267b6bbc2cd5bb3d67c4fc16c257;hb=b94ec30428b9696f99b08055735689623fe63954;hp=59ad2e958d88d55f06b67b84a49bb500d109a817;hpb=b78e7197a81e193827cf2408fe25bc1f14843a72;p=ffmpeg

diff --git a/libavutil/lls.h b/libavutil/lls.h
index 59ad2e958d8..27c0d5e3fe6 100644
--- a/libavutil/lls.h
+++ b/libavutil/lls.h
@@ -3,43 +3,69 @@
  *
  * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#ifndef LLS_H
-#define LLS_H
+#ifndef AVUTIL_LLS_H
+#define AVUTIL_LLS_H
+
+#include "common.h"
+#include "mem.h"
+#include "version.h"
 
 #define MAX_VARS 32
+#define MAX_VARS_ALIGN FFALIGN(MAX_VARS+1,4)
 
 //FIXME avoid direct access to LLSModel from outside
 
 /**
  * Linear least squares model.
  */
-typedef struct LLSModel{
-    double covariance[MAX_VARS+1][MAX_VARS+1];
-    double coeff[MAX_VARS][MAX_VARS];
+typedef struct LLSModel {
+    DECLARE_ALIGNED(32, double, covariance[MAX_VARS_ALIGN][MAX_VARS_ALIGN]);
+    DECLARE_ALIGNED(32, double, coeff[MAX_VARS][MAX_VARS]);
     double variance[MAX_VARS];
     int indep_count;
-}LLSModel;
+    /**
+     * Take the outer-product of var[] with itself, and add to the covariance matrix.
+     * @param m this context
+     * @param var training samples, starting with the value to be predicted
+     *            32-byte aligned, and any padding elements must be initialized
+     *            (i.e not denormal/nan).
+     */
+    void (*update_lls)(struct LLSModel *m, double *var);
+    /**
+     * Inner product of var[] and the LPC coefs.
+     * @param m this context
+     * @param var training samples, excluding the value to be predicted. unaligned.
+     * @param order lpc order
+     */
+    double (*evaluate_lls)(struct LLSModel *m, double *var, int order);
+} LLSModel;
+
+void avpriv_init_lls(LLSModel *m, int indep_count);
+void ff_init_lls_x86(LLSModel *m);
+void avpriv_solve_lls(LLSModel *m, double threshold, unsigned short min_order);
 
+#if FF_API_LLS_PRIVATE
 void av_init_lls(LLSModel *m, int indep_count);
 void av_update_lls(LLSModel *m, double *param, double decay);
 void av_solve_lls(LLSModel *m, double threshold, int min_order);
 double av_evaluate_lls(LLSModel *m, double *param, int order);
+#endif /* FF_API_LLS_PRIVATE */
 
-#endif
+#endif /* AVUTIL_LLS_H */