Remove obsolete link to vorbis.com.

[platform/upstream/libvorbis.git] / lib / smallft.h

diff --git a/lib/smallft.h b/lib/smallft.h
index b6ca544..02fe8f9 100644 (file)
--- a/lib/smallft.h
+++ b/lib/smallft.h
@@ -1,18 +1,32 @@
-/******************************************************************
- * CopyPolicy: GNU Public License 2 applies
- * Copyright (C) 1998-1999 Monty xiphmont@mit.edu, monty@xiph.org
- *
- * Stripped down FFT implementation from OggSquish.
- *
- ******************************************************************/
+/********************************************************************
+ *                                                                  *
+ * 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 OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007             *
+ * by the Xiph.Org Foundation https://xiph.org/                     *
+ *                                                                  *
+ ********************************************************************
+
+ function: fft transform
+
+ ********************************************************************/
 
 #ifndef _V_SMFT_H_
 #define _V_SMFT_H_
 
-#include "codec.h"
+#include "vorbis/codec.h"
+
+typedef struct {
+  int n;
+  float *trigcache;
+  int *splitcache;
+} drft_lookup;
 
-extern void drft_forward(drft_lookup *l,double *data);
-extern void drft_backward(drft_lookup *l,double *data);
+extern void drft_forward(drft_lookup *l,float *data);
+extern void drft_backward(drft_lookup *l,float *data);
 extern void drft_init(drft_lookup *l,int n);
 extern void drft_clear(drft_lookup *l);