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diff --git a/media/libvorbis/lib/window.h b/media/libvorbis/lib/window.h
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+/********************************************************************
+ * *
+ * 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: window functions
+
+ ********************************************************************/
+
+#ifndef _V_WINDOW_
+#define _V_WINDOW_
+
+extern const float *_vorbis_window_get(int n);
+extern void _vorbis_apply_window(float *d,int *winno,long *blocksizes,
+ int lW,int W,int nW);
+
+
+#endif