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diff --git a/faad2/src/libfaad/sbr_e_nf.h b/faad2/src/libfaad/sbr_e_nf.h
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+++ b/faad2/src/libfaad/sbr_e_nf.h
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+/*
+** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
+** Copyright (C) 2003-2005 M. Bakker, Nero AG, http://www.nero.com
+**  
+** This program is free software; you can redistribute it and/or modify
+** it under the terms of the GNU General Public License as published by
+** the Free Software Foundation; either version 2 of the License, or
+** (at your option) any later version.
+** 
+** This program 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 General Public License for more details.
+** 
+** You should have received a copy of the GNU General Public License
+** along with this program; if not, write to the Free Software 
+** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+**
+** Any non-GPL usage of this software or parts of this software is strictly
+** forbidden.
+**
+** The "appropriate copyright message" mentioned in section 2c of the GPLv2
+** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com"
+**
+** Commercial non-GPL licensing of this software is possible.
+** For more info contact Nero AG through Mpeg4AAClicense@nero.com.
+**
+** $Id: sbr_e_nf.h,v 1.18 2007/11/01 12:33:35 menno Exp $
+**/
+
+#ifndef __SBR_E_NF_H__
+#define __SBR_E_NF_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+void extract_envelope_data(sbr_info *sbr, uint8_t ch);
+void extract_noise_floor_data(sbr_info *sbr, uint8_t ch);
+#ifndef FIXED_POINT
+void envelope_noise_dequantisation(sbr_info *sbr, uint8_t ch);
+void unmap_envelope_noise(sbr_info *sbr);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif
+