1 /******************************************************************************
3 * Copyright (C) 2002-2012 Broadcom Corporation
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:
9 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 ******************************************************************************/
19 /******************************************************************************
21 * This contains constants definitions and other information from the AVDTP
22 * specification. This file is intended for use internal to AVDT only.
24 ******************************************************************************/
28 /*****************************************************************************
30 *****************************************************************************/
32 /* signalling packet type */
33 #define AVDT_PKT_TYPE_SINGLE 0 /* single packet */
34 #define AVDT_PKT_TYPE_START 1 /* start packet */
35 #define AVDT_PKT_TYPE_CONT 2 /* continue packet */
36 #define AVDT_PKT_TYPE_END 3 /* end packet */
38 /* signalling message type */
39 #define AVDT_MSG_TYPE_CMD 0 /* command */
40 #define AVDT_MSG_TYPE_GRJ 1 /* general reject */
41 #define AVDT_MSG_TYPE_RSP 2 /* response accept */
42 #define AVDT_MSG_TYPE_REJ 3 /* response reject */
44 /* signalling messages */
45 #define AVDT_SIG_DISCOVER 1 /* discover */
46 #define AVDT_SIG_GETCAP 2 /* get capabilities */
47 #define AVDT_SIG_SETCONFIG 3 /* set configuration */
48 #define AVDT_SIG_GETCONFIG 4 /* get configuration */
49 #define AVDT_SIG_RECONFIG 5 /* reconfigure */
50 #define AVDT_SIG_OPEN 6 /* open */
51 #define AVDT_SIG_START 7 /* start */
52 #define AVDT_SIG_CLOSE 8 /* close */
53 #define AVDT_SIG_SUSPEND 9 /* suspend */
54 #define AVDT_SIG_ABORT 10 /* abort */
55 #define AVDT_SIG_SECURITY 11 /* security control */
56 #define AVDT_SIG_GET_ALLCAP 12 /* get all capabilities */
57 #define AVDT_SIG_DELAY_RPT 13 /* delay report */
59 /* maximum signal value */
60 #define AVDT_SIG_MAX AVDT_SIG_DELAY_RPT
62 /* used for general reject */
63 #define AVDT_SIG_NONE 0
65 /* some maximum and minimum sizes of signalling messages */
66 #define AVDT_DISCOVER_REQ_MIN 1
67 #define AVDT_DISCOVER_REQ_MAX 124
69 /* service category information element field values */
70 #define AVDT_CAT_TRANS 1 /* Media Transport */
71 #define AVDT_CAT_REPORT 2 /* Reporting */
72 #define AVDT_CAT_RECOV 3 /* Recovery */
73 #define AVDT_CAT_PROTECT 4 /* Content Protection */
74 #define AVDT_CAT_HDRCMP 5 /* Header Compression */
75 #define AVDT_CAT_MUX 6 /* Multiplexing */
76 #define AVDT_CAT_CODEC 7 /* Media Codec */
77 #define AVDT_CAT_DELAY_RPT 8 /* Delay Reporting */
78 #define AVDT_CAT_MAX_CUR AVDT_CAT_DELAY_RPT
80 /* min/max lengths of service category information elements */
81 #define AVDT_LEN_TRANS_MIN 0
82 #define AVDT_LEN_REPORT_MIN 0
83 #define AVDT_LEN_RECOV_MIN 3
84 #define AVDT_LEN_PROTECT_MIN 2
85 #define AVDT_LEN_HDRCMP_MIN 1
86 #define AVDT_LEN_MUX_MIN 3
87 #define AVDT_LEN_CODEC_MIN 2
88 #define AVDT_LEN_DELAY_RPT_MIN 0
90 #define AVDT_LEN_TRANS_MAX 0
91 #define AVDT_LEN_REPORT_MAX 0
92 #define AVDT_LEN_RECOV_MAX 3
93 #define AVDT_LEN_PROTECT_MAX 255
94 #define AVDT_LEN_HDRCMP_MAX 1
95 #define AVDT_LEN_MUX_MAX 7
96 #define AVDT_LEN_CODEC_MAX 255
97 #define AVDT_LEN_DELAY_RPT_MAX 0
99 /* minimum possible size of configuration or capabilities data */
100 #define AVDT_LEN_CFG_MIN 2
102 /* minimum and maximum lengths for different message types */
103 #define AVDT_LEN_SINGLE 1
104 #define AVDT_LEN_SETCONFIG_MIN 2
105 #define AVDT_LEN_RECONFIG_MIN 1
106 #define AVDT_LEN_MULTI_MIN 1
107 #define AVDT_LEN_SECURITY_MIN 1
108 #define AVDT_LEN_DELAY_RPT 3
110 /* header lengths for different packet types */
111 #define AVDT_LEN_TYPE_SINGLE 2 /* single packet */
112 #define AVDT_LEN_TYPE_START 3 /* start packet */
113 #define AVDT_LEN_TYPE_CONT 1 /* continue packet */
114 #define AVDT_LEN_TYPE_END 1 /* end packet */
116 /* length of general reject message */
117 #define AVDT_LEN_GEN_REJ 2
119 /* recovery service capabilities information elements */
120 #define AVDT_RECOV_MRWS_MIN 0x01 /* min value for maximum recovery window */
121 #define AVDT_RECOV_MRWS_MAX 0x18 /* max value for maximum recovery window */
122 #define AVDT_RECOV_MNMP_MIN 0x01 /* min value for maximum number of media packets */
123 #define AVDT_RECOV_MNMP_MAX 0x18 /* max value for maximum number of media packets */
125 /* SEID value range */
126 #define AVDT_SEID_MIN 0x01
127 #define AVDT_SEID_MAX 0x3E
129 /* first byte of media packet header */
130 #define AVDT_MEDIA_OCTET1 0x80
132 /* for adaptation layer header */
133 #define AVDT_ALH_LCODE_MASK 0x03 /* coding of length field */
134 #define AVDT_ALH_LCODE_NONE 0x00 /* No length field present. Take length from l2cap */
135 #define AVDT_ALH_LCODE_16BIT 0x01 /* 16bit length field */
136 #define AVDT_ALH_LCODE_9BITM0 0x02 /* 9 bit length field, MSB = 0, 8 LSBs in 1 octet following */
137 #define AVDT_ALH_LCODE_9BITM1 0x03 /* 9 bit length field, MSB = 1, 8 LSBs in 1 octet following */
139 #define AVDT_ALH_FRAG_MASK 0x04 /* set this for continuation packet */
141 /*****************************************************************************
142 ** message parsing and building macros
143 *****************************************************************************/
145 #define AVDT_MSG_PRS_HDR(p, lbl, pkt, msg) \
147 pkt = (*(p) >> 2) & 0x03; \
150 #define AVDT_MSG_PRS_DISC(p, seid, in_use, type, tsep) \
152 in_use = (*(p)++ >> 1) & 0x01; \
154 tsep = (*(p)++ >> 3) & 0x01;
156 #define AVDT_MSG_PRS_SIG(p, sig) \
159 #define AVDT_MSG_PRS_SEID(p, seid) \
162 #define AVDT_MSG_PRS_PKT_TYPE(p, pkt) \
163 pkt = (*(p) >> 2) & 0x03;
165 #define AVDT_MSG_PRS_OCTET1(p, o_v, o_p, o_x, o_cc) \
167 o_p = (*(p) >> 5) & 0x01; \
168 o_x = (*(p) >> 4) & 0x01; \
169 o_cc = *(p)++ & 0x0F;
171 #define AVDT_MSG_PRS_RPT_OCTET1(p, o_v, o_p, o_cc) \
173 o_p = (*(p) >> 5) & 0x01; \
174 o_cc = *(p)++ & 0x1F;
176 #define AVDT_MSG_PRS_M_PT(p, m_pt, marker) \
177 marker = *(p) >> 7; \
178 m_pt = *(p)++ & 0x7F;
180 #define AVDT_MSG_BLD_HDR(p, lbl, pkt, msg) \
181 *(p)++ = (UINT8) ((lbl) << 4) | ((pkt) << 2) | (msg);
183 #define AVDT_MSG_BLD_DISC(p, seid, in_use, type, tsep) \
184 *(p)++ = (UINT8) (((seid) << 2) | ((in_use) << 1)); \
185 *(p)++ = (UINT8) (((type) << 4) | ((tsep) << 3));
187 #define AVDT_MSG_BLD_SIG(p, sig) \
188 *(p)++ = (UINT8) (sig);
190 #define AVDT_MSG_BLD_SEID(p, seid) \
191 *(p)++ = (UINT8) ((seid) << 2);
193 #define AVDT_MSG_BLD_ERR(p, err) \
194 *(p)++ = (UINT8) (err);
196 #define AVDT_MSG_BLD_PARAM(p, param) \
197 *(p)++ = (UINT8) (param);
199 #define AVDT_MSG_BLD_NOSP(p, nosp) \
200 *(p)++ = (UINT8) (nosp);
202 #endif /* AVDT_DEFS_H */