xref: /aosp_15_r20/external/libxaac/encoder/ixheaace_constants.h (revision 15dc779a375ca8b5125643b829a8aa4b70d7f451)
1 /******************************************************************************
2  *                                                                            *
3  * Copyright (C) 2023 The Android Open Source Project
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at:
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  *
17  *****************************************************************************
18  * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
19  */
20 
21 #pragma once
22 /*****************************************************************************/
23 /* constant macros                                                           */
24 /*****************************************************************************/
25 #define Q1 2
26 #define Q2 4
27 #define Q3 8
28 #define Q4 16
29 #define Q6 64
30 #define Q25 33554432
31 #define Q28 268435456
32 #define Q29 536870912
33 #define Q30 1073741824
34 #define Q31 2147483647
35 #define Q32 4294967296
36 #define Q35 34359738368
37 #define Q39 549755813887
38 #define Q40 Q39
39 
40 #define MAX_32 (WORD32)0x7fffffffL
41 #define MIN_32 (WORD32)0x80000000L
42 
43 #define MAX_16 (WORD16)0x7fff
44