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diff --git a/media/libstagefright/codecs/amrnb/dec/src/wmf_to_ets.cpp b/media/libstagefright/codecs/amrnb/dec/src/wmf_to_ets.cpp
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@@ -0,0 +1,190 @@
+/* ------------------------------------------------------------------
+ * 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.
+****************************************************************************************/
+/*
+------------------------------------------------------------------------------
+
+
+
+ Pathname: ./audio/gsm-amr/c/src/wmf_to_ets.c
+ Funtions: wmf_to_ets
+
+     Date: 01/21/2002
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Changing mode to frame_type_3gpp for DTX support. Modifying for
+              loops for optimized code. Updating as per review comments.
+
+ Description: Changed MRDTX to AMR_SID in the code and added bitreorder_tab.h
+              in the Include section.
+
+ Description:
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "frame_type_3gpp.h"
+#include "wmf_to_ets.h"
+#include "typedef.h"
+#include "bitreorder_tab.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 VARIABLE DEFINITIONS
+; Variable declaration - defined here and used outside this module
+----------------------------------------------------------------------------*/
+
+
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME: wmf_to_ets
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+    frame_type_3gpp = decoder speech bit rate (enum Frame_Type_3GPP)
+    wmf_input_ptr   = pointer to input encoded speech bits in WMF (non-IF2) format
+                     (Word8)
+    ets_output_ptr  = pointer to output encoded speech bits in ETS format (Word16)
+
+ Outputs:
+    ets_output_ptr  = pointer to encoded speech bits in the ETS format (Word16)
+
+ Returns:
+    None
+
+ Global Variables Used:
+    None
+
+ Local Variables Needed:
+    None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ This function performs a transformation on the data buffers. It converts the
+ data format from WMF (non-IF2) (Wireless Multi-media Forum) to ETS (European
+ Telecommunication Standard). WMF format has the encoded speech bits byte
+ aligned with MSB to LSB going left to right. ETS format has the encoded speech
+ bits each separate with only one bit stored in each word.
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+AMR Speech Codec Frame Structure", 3GPP TS 26.101 version 4.1.0 Release 4, June 2001
+
+------------------------------------------------------------------------------
+ PSEUDO-CODE
+
+
+
+------------------------------------------------------------------------------
+ RESOURCES USED [optional]
+
+ When the code is written for a specific target processor the
+ the resources used should be documented below.
+
+ HEAP MEMORY USED: x bytes
+
+ STACK MEMORY USED: x bytes
+
+ CLOCK CYCLES: (cycle count equation for this function) + (variable
+                used to represent cycle count for each subroutine
+                called)
+     where: (cycle count variable) = cycle count for [subroutine
+                                     name]
+
+------------------------------------------------------------------------------
+ CAUTION [optional]
+ [State any special notes, constraints or cautions for users of this function]
+
+------------------------------------------------------------------------------
+*/
+
+void wmf_to_ets(
+    enum Frame_Type_3GPP frame_type_3gpp,
+    UWord8   *wmf_input_ptr,
+    Word16   *ets_output_ptr)
+{
+
+    Word16 i;
+
+    /*
+     * The following section of code accesses bits in the WMF method of
+     * bit ordering. Each bit is given its own location in the buffer pointed
+     * to by ets_output_ptr. If the frame_type_3gpp is less than MRDTX then
+     * the elements are reordered within the buffer pointed to by ets_output_ptr.
+     */
+
+    if (frame_type_3gpp < AMR_SID)
+    {
+        /* The table numOfBits[] can be found in bitreorder.c. */
+        for (i = numOfBits[frame_type_3gpp] - 1; i >= 0; i--)
+        {
+            /* The table reorderBits[][] can be found in bitreorder.c. */
+            ets_output_ptr[reorderBits[frame_type_3gpp][i]] =
+                (wmf_input_ptr[i>>3] >> ((~i) & 0x7)) & 0x01;
+        }
+    }
+    else
+    {
+        /* The table numOfBits[] can be found in bitreorder.c. */
+        for (i = numOfBits[frame_type_3gpp] - 1; i >= 0; i--)
+        {
+            ets_output_ptr[i] = (wmf_input_ptr[i>>3] >> ((~i) & 0x7)) & 0x01;
+        }
+    }
+
+    return;
+}