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diff --git a/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/typedef.h b/opencore/codecs_v2/audio/gsm_amr/amr_nb/common/include/typedef.h
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+/* ------------------------------------------------------------------
+ * Copyright (C) 1998-2009 PacketVideo
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+ * express or implied.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ * -------------------------------------------------------------------
+ */
+/****************************************************************************************
+Portions of this file are derived from the following 3GPP standard:
+
+ 3GPP TS 26.073
+ ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
+ Available from http://www.3gpp.org
+
+(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
+Permission to distribute, modify and use this file under the standard license
+terms listed above has been obtained from the copyright holder.
+****************************************************************************************/
+/*
+********************************************************************************
+*
+* GSM AMR-NB speech codec R98 Version 7.5.0 March 2, 2001
+* R99 Version 3.2.0
+* REL-4 Version 4.0.0
+*
+********************************************************************************
+*
+* File : typedef.c
+* Purpose : Basic types.
+*
+********************************************************************************
+*/
+#ifndef typedef_h
+#define typedef_h "$Id $"
+
+#undef ORIGINAL_TYPEDEF_H /* CHANGE THIS TO #define to get the */
+/* "original" ETSI version of typedef.h */
+/* CHANGE TO #undef for PV version */
+
+#ifdef ORIGINAL_TYPEDEF_H
+/*
+ * this is the original code from the ETSI file typedef.h
+ */
+
+#if defined(__unix__) || defined(__unix)
+typedef signed char Word8;
+typedef short Word16;
+typedef int Word32;
+typedef int Flag;
+
+#else
+#error No System recognized
+#endif
+#else /* not original typedef.h */
+
+/*
+ * use (improved) type definition file typdefs.h
+ */
+#include "gsm_amr_typedefs.h"
+
+#endif
+
+#endif