1 /******************************************************************************
2  *
3  *  Copyright (C) 2000-2012 Broadcom Corporation
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 
19 //
20 // A2DP constants for low complexity subband codec (SBC)
21 //
22 
23 #ifndef A2DP_SBC_CONSTANTS_H
24 #define A2DP_SBC_CONSTANTS_H
25 
26 /*****************************************************************************
27  *  Constants
28  ****************************************************************************/
29 /* the length of the SBC Media Payload header. */
30 #define A2DP_SBC_MPL_HDR_LEN 1
31 
32 /* the LOSC of SBC media codec capabilitiy */
33 #define A2DP_SBC_INFO_LEN 6
34 
35 /* for Codec Specific Information Element */
36 #define A2DP_SBC_IE_SAMP_FREQ_MSK 0xF0 /* b7-b4 sampling frequency */
37 #define A2DP_SBC_IE_SAMP_FREQ_16 0x80  /* b7:16  kHz */
38 #define A2DP_SBC_IE_SAMP_FREQ_32 0x40  /* b6:32  kHz */
39 #define A2DP_SBC_IE_SAMP_FREQ_44 0x20  /* b5:44.1kHz */
40 #define A2DP_SBC_IE_SAMP_FREQ_48 0x10  /* b4:48  kHz */
41 
42 #define A2DP_SBC_IE_CH_MD_MSK 0x0F    /* b3-b0 channel mode */
43 #define A2DP_SBC_IE_CH_MD_MONO 0x08   /* b3: mono */
44 #define A2DP_SBC_IE_CH_MD_DUAL 0x04   /* b2: dual */
45 #define A2DP_SBC_IE_CH_MD_STEREO 0x02 /* b1: stereo */
46 #define A2DP_SBC_IE_CH_MD_JOINT 0x01  /* b0: joint stereo */
47 
48 #define A2DP_SBC_IE_BLOCKS_MSK 0xF0 /* b7-b4 number of blocks */
49 #define A2DP_SBC_IE_BLOCKS_4 0x80   /* 4 blocks */
50 #define A2DP_SBC_IE_BLOCKS_8 0x40   /* 8 blocks */
51 #define A2DP_SBC_IE_BLOCKS_12 0x20  /* 12blocks */
52 #define A2DP_SBC_IE_BLOCKS_16 0x10  /* 16blocks */
53 
54 #define A2DP_SBC_IE_SUBBAND_MSK 0x0C /* b3-b2 number of subbands */
55 #define A2DP_SBC_IE_SUBBAND_4 0x08   /* b3: 4 */
56 #define A2DP_SBC_IE_SUBBAND_8 0x04   /* b2: 8 */
57 
58 #define A2DP_SBC_IE_ALLOC_MD_MSK 0x03 /* b1-b0 allocation mode */
59 #define A2DP_SBC_IE_ALLOC_MD_S 0x02   /* b1: SNR */
60 #define A2DP_SBC_IE_ALLOC_MD_L 0x01   /* b0: loundess */
61 
62 #define A2DP_SBC_IE_MIN_BITPOOL 2
63 #define A2DP_SBC_IE_MAX_BITPOOL 250
64 
65 /* for media payload header */
66 #define A2DP_SBC_HDR_F_MSK 0x80
67 #define A2DP_SBC_HDR_S_MSK 0x40
68 #define A2DP_SBC_HDR_L_MSK 0x20
69 #define A2DP_SBC_HDR_NUM_MSK 0x0F
70 
71 #endif  // A2DP_SBC_CONSTANTS_H
72