1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
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
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
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 express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 //
18 // A2DP constants for LDAC codec
19 //
20 
21 #ifndef A2DP_VENDOR_LDAC_CONSTANTS_H
22 #define A2DP_VENDOR_LDAC_CONSTANTS_H
23 
24 // LDAC Quality Mode Index
25 #define A2DP_LDAC_QUALITY_HIGH 0  // Equal to LDACBT_EQMID_HQ 990kbps
26 #define A2DP_LDAC_QUALITY_MID 1   // Equal to LDACBT_EQMID_SQ 660kbps
27 #define A2DP_LDAC_QUALITY_LOW 2   // Equal to LDACBT_EQMID_MQ 330kbps
28 #define A2DP_LDAC_QUALITY_ABR 3   // ABR mode, range: 990,660,492,396,330(kbps)
29 
30 // Length of the LDAC Media Payload header
31 #define A2DP_LDAC_MPL_HDR_LEN 1
32 
33 // LDAC Media Payload Header
34 #define A2DP_LDAC_HDR_F_MSK 0x80
35 #define A2DP_LDAC_HDR_S_MSK 0x40
36 #define A2DP_LDAC_HDR_L_MSK 0x20
37 #define A2DP_LDAC_HDR_NUM_MSK 0x0F
38 
39 // LDAC codec specific settings
40 #define A2DP_LDAC_CODEC_LEN 10
41 // [Octet 0-3] Vendor ID
42 #define A2DP_LDAC_VENDOR_ID 0x0000012D
43 // [Octet 4-5] Vendor Specific Codec ID
44 #define A2DP_LDAC_CODEC_ID 0x00AA
45 // [Octet 6], [Bits 0-5] Sampling Frequency
46 #define A2DP_LDAC_SAMPLING_FREQ_MASK 0x3F
47 #define A2DP_LDAC_SAMPLING_FREQ_44100 0x20
48 #define A2DP_LDAC_SAMPLING_FREQ_48000 0x10
49 #define A2DP_LDAC_SAMPLING_FREQ_88200 0x08
50 #define A2DP_LDAC_SAMPLING_FREQ_96000 0x04
51 #define A2DP_LDAC_SAMPLING_FREQ_176400 0x02
52 #define A2DP_LDAC_SAMPLING_FREQ_192000 0x01
53 // [Octet 7], [Bits 0-2] Channel Mode
54 #define A2DP_LDAC_CHANNEL_MODE_MASK 0x07
55 #define A2DP_LDAC_CHANNEL_MODE_MONO 0x04
56 #define A2DP_LDAC_CHANNEL_MODE_DUAL 0x02
57 #define A2DP_LDAC_CHANNEL_MODE_STEREO 0x01
58 
59 #endif  // A2DP_VENDOR_LDAC_CONSTANTS_H
60