Initial check in of AMR (NB and WB) decoders based on PV source code.

1 files changed, 170 insertions, 0 deletions

diff --git a/media/libstagefright/codecs/amrnb/common/src/sqrt_l_tbl.cpp b/media/libstagefright/codecs/amrnb/common/src/sqrt_l_tbl.cpp
new file mode 100644
index 0000000..5e9898c
--- /dev/null
+++ b/media/libstagefright/codecs/amrnb/common/src/sqrt_l_tbl.cpp
@@ -0,0 +1,170 @@
+/* ------------------------------------------------------------------
+ * 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/src/sqrt_l_tbl.c
+
+------------------------------------------------------------------------------
+ REVISION HISTORY
+
+ Description: Changed the table name to sqrt_l_tbl.
+
+ Description: Added #ifdef __cplusplus and removed "extern" from table
+              definition.
+
+ Description: Put "extern" back.
+
+ Who:                           Date:
+ Description:
+
+------------------------------------------------------------------------------
+ MODULE DESCRIPTION
+
+ This file contains the declaration for sqrt_l_table[] used by the sqrt_l_exp
+ function.
+
+    sqrt_l_tbl[i] = sqrt((i+16)*2^-6) * 2^15, i.e. sqrt(x) scaled Q15
+
+ ------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; INCLUDES
+----------------------------------------------------------------------------*/
+#include "typedef.h"
+
+/*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+    /*----------------------------------------------------------------------------
+    ; MACROS
+    ; [Define module specific macros here]
+    ----------------------------------------------------------------------------*/
+
+    /*----------------------------------------------------------------------------
+    ; DEFINES
+    ; [Include all pre-processor statements here. Include conditional
+    ; compile variables also.]
+    ----------------------------------------------------------------------------*/
+
+    /*----------------------------------------------------------------------------
+    ; LOCAL FUNCTION DEFINITIONS
+    ; [List function prototypes here]
+    ----------------------------------------------------------------------------*/
+
+    /*----------------------------------------------------------------------------
+    ; LOCAL VARIABLE DEFINITIONS
+    ; [Variable declaration - defined here and used outside this module]
+    ----------------------------------------------------------------------------*/
+    extern const Word16 sqrt_l_tbl[50] =
+    {
+        16384, 16888, 17378, 17854, 18318, 18770, 19212, 19644, 20066, 20480,
+        20886, 21283, 21674, 22058, 22435, 22806, 23170, 23530, 23884, 24232,
+        24576, 24915, 25249, 25580, 25905, 26227, 26545, 26859, 27170, 27477,
+        27780, 28081, 28378, 28672, 28963, 29251, 29537, 29819, 30099, 30377,
+        30652, 30924, 31194, 31462, 31727, 31991, 32252, 32511, 32767, 32767
+    };
+
+
+    /*--------------------------------------------------------------------------*/
+#ifdef __cplusplus
+}
+#endif
+
+/*
+------------------------------------------------------------------------------
+ FUNCTION NAME:
+------------------------------------------------------------------------------
+ INPUT AND OUTPUT DEFINITIONS
+
+ Inputs:
+    None
+
+ Outputs:
+    None
+
+ Returns:
+    None
+
+ Global Variables Used:
+    None
+
+ Local Variables Needed:
+    None
+
+------------------------------------------------------------------------------
+ FUNCTION DESCRIPTION
+
+ None
+
+------------------------------------------------------------------------------
+ REQUIREMENTS
+
+ None
+
+------------------------------------------------------------------------------
+ REFERENCES
+
+ [1] inv_sqrt.tab file,  UMTS GSM AMR speech codec, R99 - Version 3.2.0,
+ March 2, 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]
+
+------------------------------------------------------------------------------
+*/
+
+/*----------------------------------------------------------------------------
+; FUNCTION CODE
+----------------------------------------------------------------------------*/
+