1 /* ------------------------------------------------------------------
2 * Copyright (C) 1998-2009 PacketVideo
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
14 * See the License for the specific language governing permissions
15 * and limitations under the License.
16 * -------------------------------------------------------------------
18 /****************************************************************************************
19 Portions of this file are derived from the following 3GPP standard:
22 ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec
23 Available from http://www.3gpp.org
25 (C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC)
26 Permission to distribute, modify and use this file under the standard license
27 terms listed above has been obtained from the copyright holder.
28 ****************************************************************************************/
31 Filename: log2_tbl.cpp
33 ------------------------------------------------------------------------------
36 This file contains the declaration for log2_tbl[] used by the log2() and
39 ------------------------------------------------------------------------------
42 /*----------------------------------------------------------------------------
44 ----------------------------------------------------------------------------*/
45 #include "log2_norm.h"
47 /*--------------------------------------------------------------------------*/
53 /*----------------------------------------------------------------------------
55 ; [Define module specific macros here]
56 ----------------------------------------------------------------------------*/
58 /*----------------------------------------------------------------------------
60 ; [Include all pre-processor statements here. Include conditional
61 ; compile variables also.]
62 ----------------------------------------------------------------------------*/
64 /*----------------------------------------------------------------------------
65 ; LOCAL FUNCTION DEFINITIONS
66 ; [List function prototypes here]
67 ----------------------------------------------------------------------------*/
69 /*----------------------------------------------------------------------------
70 ; LOCAL VARIABLE DEFINITIONS
71 ; [Variable declaration - defined here and used outside this module]
72 ----------------------------------------------------------------------------*/
74 const Word16 log2_tbl[33] =
76 0, 1455, 2866, 4236, 5568, 6863, 8124, 9352, 10549, 11716,
77 12855, 13967, 15054, 16117, 17156, 18172, 19167, 20142, 21097, 22033,
78 22951, 23852, 24735, 25603, 26455, 27291, 28113, 28922, 29716, 30497,
82 /*--------------------------------------------------------------------------*/
88 ------------------------------------------------------------------------------
90 ------------------------------------------------------------------------------
91 INPUT AND OUTPUT DEFINITIONS
102 Global Variables Used:
105 Local Variables Needed:
108 ------------------------------------------------------------------------------
113 ------------------------------------------------------------------------------
118 ------------------------------------------------------------------------------
121 [1] log2.tab, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001
123 ------------------------------------------------------------------------------
127 ------------------------------------------------------------------------------
129 [State any special notes, constraints or cautions for users of this function]
131 ------------------------------------------------------------------------------
134 /*----------------------------------------------------------------------------
136 ----------------------------------------------------------------------------*/