1 /****************************************************************************** 2 * 3 * Copyright (C) 2002-2012 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 * 21 * This contains constants definitions and other information from the AVDTP 22 * specification. This file is intended for use internal to AVDT only. 23 * 24 ******************************************************************************/ 25 #ifndef AVDT_DEFS_H 26 #define AVDT_DEFS_H 27 28 /***************************************************************************** 29 * constants 30 ****************************************************************************/ 31 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 */ 37 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 */ 43 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 */ 58 59 /* maximum signal value */ 60 #define AVDT_SIG_MAX AVDT_SIG_DELAY_RPT 61 62 /* used for general reject */ 63 #define AVDT_SIG_NONE 0 64 65 /* some maximum and minimum sizes of signalling messages */ 66 #define AVDT_DISCOVER_REQ_MIN 1 67 #define AVDT_DISCOVER_REQ_MAX 124 68 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 79 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 89 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 98 99 /* minimum possible size of configuration or capabilities data */ 100 #define AVDT_LEN_CFG_MIN 2 101 102 /* 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 3 109 110 /* 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 */ 115 116 /* length of general reject message */ 117 #define AVDT_LEN_GEN_REJ 2 118 119 /* recovery service capabilities information elements */ 120 /* min value for maximum recovery window */ 121 #define AVDT_RECOV_MRWS_MIN 0x01 122 /* max value for maximum recovery window */ 123 #define AVDT_RECOV_MRWS_MAX 0x18 124 /* min value for maximum number of media packets */ 125 #define AVDT_RECOV_MNMP_MIN 0x01 126 /* max value for maximum number of media packets */ 127 #define AVDT_RECOV_MNMP_MAX 0x18 128 129 /* SEID value range */ 130 #define AVDT_SEID_MIN 0x01 131 #define AVDT_SEID_MAX 0x3E 132 133 /* first byte of media packet header */ 134 #define AVDT_MEDIA_OCTET1 0x80 135 136 /* for adaptation layer header */ 137 /* coding of length field */ 138 #define AVDT_ALH_LCODE_MASK 0x03 139 /* No length field present. Take length from l2cap */ 140 #define AVDT_ALH_LCODE_NONE 0x00 141 /* 16bit length field */ 142 #define AVDT_ALH_LCODE_16BIT 0x01 143 /* 9 bit length field, MSB = 0, 8 LSBs in 1 octet following */ 144 #define AVDT_ALH_LCODE_9BITM0 0x02 145 /* 9 bit length field, MSB = 1, 8 LSBs in 1 octet following */ 146 #define AVDT_ALH_LCODE_9BITM1 0x03 147 148 /* set this for continuation packet */ 149 #define AVDT_ALH_FRAG_MASK 0x04 150 151 /***************************************************************************** 152 * message parsing and building macros 153 ****************************************************************************/ 154 155 #define AVDT_MSG_PRS_HDR(p, lbl, pkt, msg) \ 156 do { \ 157 (lbl) = (*(p) >> 4) & 0x0F; \ 158 (pkt) = (*(p) >> 2) & 0x03; \ 159 (msg) = *(p)++ & 0x03; \ 160 } while (0) 161 162 #define AVDT_MSG_PRS_DISC(p, seid, in_use, type, tsep) \ 163 do { \ 164 (seid) = *(p) >> 2; \ 165 (in_use) = (*(p)++ >> 1) & 0x01; \ 166 (type) = (*(p) >> 4) & 0x0F; \ 167 (tsep) = (*(p)++ >> 3) & 0x01; \ 168 } while (0) 169 170 #define AVDT_MSG_PRS_SIG(p, sig) \ 171 do { \ 172 (sig) = (*(p)++) & 0x3F; \ 173 } while (0) 174 175 #define AVDT_MSG_PRS_SEID(p, seid) \ 176 do { \ 177 (seid) = ((*(p)++) >> 2) & 0x3F; \ 178 } while (0) 179 180 #define AVDT_MSG_PRS_PKT_TYPE(p, pkt) \ 181 do { \ 182 (pkt) = (*(p) >> 2) & 0x03; \ 183 } while (0) 184 185 #define AVDT_MSG_PRS_OCTET1(p, o_v, o_p, o_x, o_cc) \ 186 do { \ 187 (o_v) = (*(p) >> 6) & 0x02; \ 188 (o_p) = (*(p) >> 5) & 0x01; \ 189 (o_x) = (*(p) >> 4) & 0x01; \ 190 (o_cc) = (*(p)++) & 0x0F; \ 191 } while (0) 192 193 #define AVDT_MSG_PRS_RPT_OCTET1(p, o_v, o_p, o_cc) \ 194 do { \ 195 (o_v) = (*(p) >> 6) & 0x02; \ 196 (o_p) = (*(p) >> 5) & 0x01; \ 197 (o_cc) = (*(p)++) & 0x1F; \ 198 } while (0) 199 200 #define AVDT_MSG_PRS_M_PT(p, m_pt, marker) \ 201 do { \ 202 (marker) = (*(p) >> 7) & 0x01; \ 203 (m_pt) = (*(p)++) & 0x7F; \ 204 } while (0) 205 206 #define AVDT_MSG_BLD_HDR(p, lbl, pkt, msg) \ 207 do { \ 208 *(p)++ = (uint8_t)((lbl) << 4) | ((pkt) << 2) | (msg); \ 209 } while (0) 210 211 #define AVDT_MSG_BLD_DISC(p, seid, in_use, type, tsep) \ 212 do { \ 213 *(p)++ = (uint8_t)(((seid) << 2) | ((in_use) << 1)); \ 214 *(p)++ = (uint8_t)(((type) << 4) | ((tsep) << 3)); \ 215 } while (0) 216 217 #define AVDT_MSG_BLD_SIG(p, sig) \ 218 do { \ 219 *(p)++ = (uint8_t)(sig); \ 220 } while (0) 221 222 #define AVDT_MSG_BLD_SEID(p, seid) \ 223 do { \ 224 *(p)++ = (uint8_t)((seid) << 2); \ 225 } while (0) 226 227 #define AVDT_MSG_BLD_ERR(p, err) \ 228 do { \ 229 *(p)++ = (uint8_t)(err); \ 230 } while (0) 231 232 #define AVDT_MSG_BLD_PARAM(p, param) \ 233 do { \ 234 *(p)++ = (uint8_t)(param); \ 235 } while (0) 236 237 #define AVDT_MSG_BLD_NOSP(p, nosp) \ 238 do { \ 239 *(p)++ = (uint8_t)(nosp); \ 240 } while (0) 241 242 #endif /* AVDT_DEFS_H */ 243