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diff --git a/media/libstagefright/codecs/amrwb/src/qisf_ns.cpp b/media/libstagefright/codecs/amrwb/src/qisf_ns.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: qisf_ns.cpp
+
+     Date: 05/08/2004
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+
+ Description:
+
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+     int16 indice[] : indices of the selected codebook entries
+     int16 isf[]    : quantized ISFs (in frequency domain)
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+   Coding/Decoding of ISF parameters for background noise.
+
+   The ISF vector is quantized using VQ with split-by-5
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+------------------------------------------------------------------------------
+*/
+
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+
+#include "pv_amr_wb_type_defs.h"
+#include "pvamrwbdecoder_basic_op.h"
+#include "pvamrwbdecoder_acelp.h"
+#include "qisf_ns.h"
+
+/*----------------------------------------------------------------------------
+; MACROS
+; Define module specific macros here
+----------------------------------------------------------------------------*/
+
+
+/*----------------------------------------------------------------------------
+; DEFINES
+; Include all pre-processor statements here. Include conditional
+; compile variables also.
+----------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------------
+; 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 Disf_ns(
+    int16 * indice,   /* input:  quantization indices               */
+    int16 * isf_q     /* input: ISF in the frequency domain (0..0.5)*/
+)
+{
+    int16 i;
+
+    isf_q[0] = dico1_isf_noise[(indice[0] << 1)];
+    isf_q[1] = dico1_isf_noise[(indice[0] << 1) + 1];
+
+    for (i = 0; i < 3; i++)
+    {
+        isf_q[i + 2] = dico2_isf_noise[(indice[1] << 1) + indice[1] + i];
+        isf_q[i + 5] = dico3_isf_noise[(indice[2] << 1) + indice[2] + i];
+    }
+
+    for (i = 0; i < 4; i++)
+    {
+        isf_q[i +  8] = dico4_isf_noise[(indice[3] << 2) + i];
+        isf_q[i + 12] = dico5_isf_noise[(indice[4] << 2) + i];
+    }
+
+    for (i = 0; i < ORDER; i++)
+    {
+        isf_q[i] = add_int16(isf_q[i], mean_isf_noise[i]);
+    }
+
+    Reorder_isf(isf_q, ISF_GAP, ORDER);
+
+}