* 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 1994-2001 *
- * by 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: PCM data envelope analysis and manipulation
- last mod: $Id: envelope.h,v 1.22 2002/03/29 07:10:39 xiphmont Exp $
+ last mod: $Id$
********************************************************************/
#define VE_POST 2
#define VE_AMP (VE_PRE+VE_POST-1)
-#define VE_BANDS 6
+#define VE_BANDS 7
#define VE_NEARDC 15
#define VE_MINSTRETCH 2 /* a bit less than short block */
-#define VE_MAXSTRETCH 31 /* one full block */
+#define VE_MAXSTRETCH 12 /* one-third full block */
typedef struct {
float ampbuf[VE_AMP];
float nearDC_acc;
float nearDC_partialacc;
int nearptr;
+
} envelope_filter_state;
typedef struct {