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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.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Filename: /audio/gsm_amr/c/include/autocorr.h
+
+ Date: 01/23/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Moved _cplusplus #ifdef after Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+ INCLUDE DESCRIPTION
+
+ This file contains all the constant definitions and prototype definitions
+ needed by the autocorr function.
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; CONTINUE ONLY IF NOT ALREADY DEFINED
+----------------------------------------------------------------------------*/
+#ifndef autocorr_h
+#define autocorr_h "$Id $"
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+ /*----------------------------------------------------------------------------
+ ; MACROS
+ ; Define module specific macros here
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; DEFINES
+ ; Include all pre-processor statements here.
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; EXTERNAL VARIABLES REFERENCES
+ ; Declare variables used in this module but defined elsewhere
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; SIMPLE TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; ENUMERATED TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; STRUCTURES TYPEDEF'S
+ ----------------------------------------------------------------------------*/
+
+ /*----------------------------------------------------------------------------
+ ; GLOBAL FUNCTION DEFINITIONS
+ ; Function Prototype declaration
+ ----------------------------------------------------------------------------*/
+ Word16 Autocorr(
+ Word16 x[], /* (i) : Input signal (L_WINDOW) */
+ Word16 m, /* (i) : LPC order */
+ Word16 r_h[], /* (o) : Autocorrelations (msb) */
+ Word16 r_l[], /* (o) : Autocorrelations (lsb) */
+ const Word16 wind[], /* (i) : window for LPC analysis (L_WINDOW) */
+ Flag *pOverflow /* (o) : indicates overflow */
+ );
+
+ /*----------------------------------------------------------------------------
+ ; END
+ ----------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _AUTO_CORR_H_ */