eas_ima_tables.c revision 7df30109963092559d3760c0661a020f9daf1030 
1/*----------------------------------------------------------------------------
2 *
3 * File:
4 * eas_ima_tables.c
5 *
6 * Contents and purpose:
7 * Contains the constant tables for IMA encode/decode
8 *
9 * Copyright (c) 2005 Sonic Network Inc.
10
11 * Licensed under the Apache License, Version 2.0 (the "License");
12 * you may not use this file except in compliance with the License.
13 * You may obtain a copy of the License at
14 *
15 *      http://www.apache.org/licenses/LICENSE-2.0
16 *
17 * Unless required by applicable law or agreed to in writing, software
18 * distributed under the License is distributed on an "AS IS" BASIS,
19 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20 * See the License for the specific language governing permissions and
21 * limitations under the License.
22 *
23 *----------------------------------------------------------------------------
24 * Revision Control:
25 *   $Revision: 760 $
26 *   $Date: 2007-07-17 23:09:36 -0700 (Tue, 17 Jul 2007) $
27 *----------------------------------------------------------------------------
28*/
29
30#include "eas_types.h"
31
32/*----------------------------------------------------------------------------
33 * ADPCM decode tables
34 *----------------------------------------------------------------------------
35*/
36const EAS_I16 imaIndexTable[16] =
37{
38	-1, -1, -1, -1, 2, 4, 6, 8,
39	-1, -1, -1, -1, 2, 4, 6, 8
40};
41
42const EAS_I16 imaStepSizeTable[89] =
43{
44	7, 8, 9, 10, 11, 12, 13, 14, 16, 17,
45	19, 21, 23, 25, 28, 31, 34, 37, 41, 45,
46	50, 55, 60, 66, 73, 80, 88, 97, 107, 118,
47	130, 143, 157, 173, 190, 209, 230, 253, 279, 307,
48	337, 371, 408, 449, 494, 544, 598, 658, 724, 796,
49	876, 963, 1060, 1166, 1282, 1411, 1552, 1707, 1878, 2066,
50	2272, 2499, 2749, 3024, 3327, 3660, 4026, 4428, 4871, 5358,
51	5894, 6484, 7132, 7845, 8630, 9493, 10442, 11487, 12635, 13899,
52	15289, 16818, 18500, 20350, 22385, 24623, 27086, 29794, 32767
53};
54
55