1 /*
2  * Copyright (C) 2021 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef SBC_CONSTANT_H
17 #define SBC_CONSTANT_H
18 
19 #include <cstddef>
20 #include <cstdint>
21 
22 namespace sbc {
23 #define SBC_MAX_NUM_OF_BLOCKS 16
24 #define SBC_MAX_NUM_OF_CHANNELS 2
25 #define SBC_MAX_NUM_OF_SUBBANDS 8
26 
27 #define SBC_MAX_PCM_BUFFER_SIZE \
28     (SBC_MAX_NUM_OF_BLOCKS * SBC_MAX_NUM_OF_SUBBANDS * SBC_MAX_NUM_OF_CHANNELS)
29 
30 // Codec param
31 typedef struct {
32     uint8_t frequency;
33     uint8_t blocks;
34     uint8_t subbands;
35     uint8_t channelMode;
36     uint8_t allocation;
37     uint8_t bitpool;
38     uint8_t endian;
39 } CodecParam;
40 
41 // Errors
42 enum SbcErrors {
43     SBC_ERROR_INVALID_ARG = -1,
44     SBC_ERROR_NO_ENOUGH_BITSTREAM = -2,
45     SBC_ERROR_INVALID_FRAME = -3,
46     SBC_ERROR_INVALID_CRC = -4,
47     SBC_ERROR_BITPOOL_OUT = -5,
48 };
49 
50 // SyncWord declaration
51 enum SbcSyncWord {
52     SBC_SYNCWORD = 0x9C,
53     MSBC_SYNCWORD = 0xAD,
54 };
55 
56 // Sampling frequency
57 enum SbcSamplingFrequency {
58     SBC_FREQ_16000 = 0x00,
59     SBC_FREQ_32000 = 0x01,
60     SBC_FREQ_44100 = 0x02,
61     SBC_FREQ_48000 = 0x03,
62 };
63 
64 // Blocks
65 enum SbcBlockMode {
66     SBC_BLOCK4 = 0x00,
67     SBC_BLOCK8 = 0x01,
68     SBC_BLOCK12 = 0x02,
69     SBC_BLOCK16 = 0x03,
70 };
71 
72 // Channel Mode
73 enum SbcChannelMode {
74     SBC_CHANNEL_MODE_MONO = 0x00,
75     SBC_CHANNEL_MODE_DUAL_CHANNEL = 0x01,
76     SBC_CHANNEL_MODE_STEREO = 0x02,
77     SBC_CHANNEL_MODE_JOINT_STEREO = 0x3,
78 };
79 
80 // Subbands declaration
81 enum SbcSubband {
82     SBC_SUBBAND4 = 0x00,
83     SBC_SUBBAND8 = 0x01,
84 };
85 
86 // Sbc data endianness
87 enum SbcEndianess {
88     SBC_ENDIANESS_LE = 0x00,
89     SBC_ENDIANESS_BE = 0x01,
90 };
91 
92 // Sbc allocation method
93 enum SbcAllocation {
94     SBC_ALLOCATION_LOUDNESS = 0x00,
95     SBC_ALLOCATION_SNR = 0x01,
96 };
97 } // namespace sbc
98 #endif //  SBC_CONSTANT_H
99