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diff --git a/media/libstagefright/codecs/amrwb/src/dec_acelp_2p_in_64.cpp b/media/libstagefright/codecs/amrwb/src/dec_acelp_2p_in_64.cpp
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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 26.173
+    ANSI-C code for the Adaptive Multi-Rate - Wideband (AMR-WB) speech codec
+    Available from http://www.3gpp.org
+
+(C) 2007, 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: dec_acelp_2p_in_64.cpp
+
+     Date: 05/08/2007
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+
+ Description:
+
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+     int16 index,          (i):   12 bits index
+     int16 code[]          (o): Q9 algebraic (fixed) codebook excitation
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+   12 bits algebraic codebook decoder.
+   2 tracks x 32 positions per track = 64 samples.
+
+   12 bits --> 2 pulses in a frame of 64 samples.
+
+   All pulses can have two (2) possible amplitudes: +1 or -1.
+   Each pulse can have 32 possible positions.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+
+#include "pv_amr_wb_type_defs.h"
+#include "pvamrwbdecoder_basic_op.h"
+#include "pvamrwbdecoder_cnst.h"
+#include "pvamrwbdecoder_acelp.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+#define L_CODE    64                       /* codevector length  */
+#define NB_TRACK  2                        /* number of track    */
+#define NB_POS    32                       /* number of position */
+
+
+/*----------------------------------------------------------------------------
+; LOCAL FUNCTION DEFINITIONS
+; Function Prototype declaration
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; LOCAL STORE/BUFFER/POINTER DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL FUNCTION REFERENCES
+; Declare functions defined elsewhere and referenced in this module
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES
+; Declare variables used in this module but defined elsewhere
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; FUNCTION CODE
+----------------------------------------------------------------------------*/
+
+void dec_acelp_2p_in_64(
+    int16 index,        /* (i):   12 bits index                          */
+    int16 code[]        /* (o): Q9 algebraic (fixed) codebook excitation */
+)
+{
+    int16 i;
+
+    pv_memset(code, 0, L_CODE*sizeof(*code));
+
+    /* decode the positions and signs of pulses and build the codeword */
+
+    i = (index >> 5) & 0x003E;
+
+    if (((index >> 6) & NB_POS) == 0)
+    {
+        code[i] = 512;
+    }
+    else
+    {
+        code[i] = -512;
+    }
+
+    i = ((index & 0x001F) << 1) + 1;
+
+    if ((index & NB_POS) == 0)
+    {
+        code[i] = 512;
+    }
+    else
+    {
+        code[i] = -512;
+    }
+
+}