/********************************************************************
* *
- * THIS FILE IS PART OF THE Ogg Vorbis SOFTWARE CODEC SOURCE CODE. *
- * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
- * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE. *
- * PLEASE READ THESE TERMS DISTRIBUTING. *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
- * THE OggSQUISH SOURCE CODE IS (C) COPYRIGHT 1994-2000 *
- * by Monty <monty@xiph.org> and The XIPHOPHORUS Company *
- * http://www.xiph.org/ *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007 *
+ * by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************
function: LPC low level routines
- last mod: $Id: lpc.h,v 1.10 2000/05/08 20:49:49 xiphmont Exp $
********************************************************************/
#define _V_LPC_H_
#include "vorbis/codec.h"
-#include "smallft.h"
-
-typedef struct lpclook{
- /* en/decode lookups */
- drft_lookup fft;
-
- int ln;
- int m;
-
-} lpc_lookup;
-
-extern void lpc_init(lpc_lookup *l,long mapped, int m);
-extern void lpc_clear(lpc_lookup *l);
/* simple linear scale LPC code */
-extern double vorbis_lpc_from_data(double *data,double *lpc,int n,int m);
-extern double vorbis_lpc_from_curve(double *curve,double *lpc,lpc_lookup *l);
-extern void vorbis_lpc_to_curve(double *curve,double *lpc,double amp,
- lpc_lookup *l);
+extern float vorbis_lpc_from_data(float *data,float *lpc,int n,int m);
-/* standard lpc stuff */
-extern void vorbis_lpc_residue(double *coeff,double *prime,int m,
- double *data,long n);
-extern void vorbis_lpc_predict(double *coeff,double *prime,int m,
- double *data,long n);
+extern void vorbis_lpc_predict(float *coeff,float *prime,int m,
+ float *data,long n);
#endif