1 /* 2 * 3 * BlueZ - Bluetooth protocol stack for Linux 4 * 5 * Copyright (C) 2006-2010 Nokia Corporation 6 * Copyright (C) 2004-2010 Marcel Holtmann <marcel (at) holtmann.org> 7 * 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 22 * 23 */ 24 25 typedef enum { 26 AVDTP_ERROR_ERRNO, 27 AVDTP_ERROR_ERROR_CODE 28 } avdtp_error_type_t; 29 30 typedef enum { 31 AVDTP_SESSION_STATE_DISCONNECTED, 32 AVDTP_SESSION_STATE_CONNECTING, 33 AVDTP_SESSION_STATE_CONNECTED 34 } avdtp_session_state_t; 35 36 struct avdtp; 37 struct avdtp_stream; 38 struct avdtp_local_sep; 39 struct avdtp_remote_sep; 40 struct avdtp_error { 41 avdtp_error_type_t type; 42 union { 43 uint8_t error_code; 44 int posix_errno; 45 } err; 46 }; 47 48 /* SEP capability categories */ 49 #define AVDTP_MEDIA_TRANSPORT 0x01 50 #define AVDTP_REPORTING 0x02 51 #define AVDTP_RECOVERY 0x03 52 #define AVDTP_CONTENT_PROTECTION 0x04 53 #define AVDTP_HEADER_COMPRESSION 0x05 54 #define AVDTP_MULTIPLEXING 0x06 55 #define AVDTP_MEDIA_CODEC 0x07 56 #define AVDTP_DELAY_REPORTING 0x08 57 58 /* AVDTP error definitions */ 59 #define AVDTP_BAD_HEADER_FORMAT 0x01 60 #define AVDTP_BAD_LENGTH 0x11 61 #define AVDTP_BAD_ACP_SEID 0x12 62 #define AVDTP_SEP_IN_USE 0x13 63 #define AVDTP_SEP_NOT_IN_USE 0x14 64 #define AVDTP_BAD_SERV_CATEGORY 0x17 65 #define AVDTP_BAD_PAYLOAD_FORMAT 0x18 66 #define AVDTP_NOT_SUPPORTED_COMMAND 0x19 67 #define AVDTP_INVALID_CAPABILITIES 0x1A 68 #define AVDTP_BAD_RECOVERY_TYPE 0x22 69 #define AVDTP_BAD_MEDIA_TRANSPORT_FORMAT 0x23 70 #define AVDTP_BAD_RECOVERY_FORMAT 0x25 71 #define AVDTP_BAD_ROHC_FORMAT 0x26 72 #define AVDTP_BAD_CP_FORMAT 0x27 73 #define AVDTP_BAD_MULTIPLEXING_FORMAT 0x28 74 #define AVDTP_UNSUPPORTED_CONFIGURATION 0x29 75 #define AVDTP_BAD_STATE 0x31 76 77 /* SEP types definitions */ 78 #define AVDTP_SEP_TYPE_SOURCE 0x00 79 #define AVDTP_SEP_TYPE_SINK 0x01 80 81 /* Media types definitions */ 82 #define AVDTP_MEDIA_TYPE_AUDIO 0x00 83 #define AVDTP_MEDIA_TYPE_VIDEO 0x01 84 #define AVDTP_MEDIA_TYPE_MULTIMEDIA 0x02 85 86 typedef enum { 87 AVDTP_STATE_IDLE, 88 AVDTP_STATE_CONFIGURED, 89 AVDTP_STATE_OPEN, 90 AVDTP_STATE_STREAMING, 91 AVDTP_STATE_CLOSING, 92 AVDTP_STATE_ABORTING, 93 } avdtp_state_t; 94 95 struct avdtp_service_capability { 96 uint8_t category; 97 uint8_t length; 98 uint8_t data[0]; 99 } __attribute__ ((packed)); 100 101 #if __BYTE_ORDER == __LITTLE_ENDIAN 102 103 struct avdtp_media_codec_capability { 104 uint8_t rfa0:4; 105 uint8_t media_type:4; 106 uint8_t media_codec_type; 107 uint8_t data[0]; 108 } __attribute__ ((packed)); 109 110 #elif __BYTE_ORDER == __BIG_ENDIAN 111 112 struct avdtp_media_codec_capability { 113 uint8_t media_type:4; 114 uint8_t rfa0:4; 115 uint8_t media_codec_type; 116 uint8_t data[0]; 117 } __attribute__ ((packed)); 118 119 #else 120 #error "Unknown byte order" 121 #endif 122 123 typedef void (*avdtp_session_state_cb) (struct audio_device *dev, 124 struct avdtp *session, 125 avdtp_session_state_t old_state, 126 avdtp_session_state_t new_state, 127 void *user_data); 128 129 typedef void (*avdtp_stream_state_cb) (struct avdtp_stream *stream, 130 avdtp_state_t old_state, 131 avdtp_state_t new_state, 132 struct avdtp_error *err, 133 void *user_data); 134 135 /* Callbacks for when a reply is received to a command that we sent */ 136 struct avdtp_sep_cfm { 137 void (*set_configuration) (struct avdtp *session, 138 struct avdtp_local_sep *lsep, 139 struct avdtp_stream *stream, 140 struct avdtp_error *err, 141 void *user_data); 142 void (*get_configuration) (struct avdtp *session, 143 struct avdtp_local_sep *lsep, 144 struct avdtp_stream *stream, 145 struct avdtp_error *err, 146 void *user_data); 147 void (*open) (struct avdtp *session, struct avdtp_local_sep *lsep, 148 struct avdtp_stream *stream, struct avdtp_error *err, 149 void *user_data); 150 void (*start) (struct avdtp *session, struct avdtp_local_sep *lsep, 151 struct avdtp_stream *stream, struct avdtp_error *err, 152 void *user_data); 153 void (*suspend) (struct avdtp *session, struct avdtp_local_sep *lsep, 154 struct avdtp_stream *stream, 155 struct avdtp_error *err, void *user_data); 156 void (*close) (struct avdtp *session, struct avdtp_local_sep *lsep, 157 struct avdtp_stream *stream, 158 struct avdtp_error *err, void *user_data); 159 void (*abort) (struct avdtp *session, struct avdtp_local_sep *lsep, 160 struct avdtp_stream *stream, 161 struct avdtp_error *err, void *user_data); 162 void (*reconfigure) (struct avdtp *session, 163 struct avdtp_local_sep *lsep, 164 struct avdtp_stream *stream, 165 struct avdtp_error *err, void *user_data); 166 void (*delay_report) (struct avdtp *session, struct avdtp_local_sep *lsep, 167 struct avdtp_stream *stream, 168 struct avdtp_error *err, void *user_data); 169 }; 170 171 /* Callbacks for indicating when we received a new command. The return value 172 * indicates whether the command should be rejected or accepted */ 173 struct avdtp_sep_ind { 174 gboolean (*get_capability) (struct avdtp *session, 175 struct avdtp_local_sep *sep, 176 gboolean get_all, 177 GSList **caps, uint8_t *err, 178 void *user_data); 179 gboolean (*set_configuration) (struct avdtp *session, 180 struct avdtp_local_sep *lsep, 181 struct avdtp_stream *stream, 182 GSList *caps, uint8_t *err, 183 uint8_t *category, void *user_data); 184 gboolean (*get_configuration) (struct avdtp *session, 185 struct avdtp_local_sep *lsep, 186 uint8_t *err, void *user_data); 187 gboolean (*open) (struct avdtp *session, struct avdtp_local_sep *lsep, 188 struct avdtp_stream *stream, uint8_t *err, 189 void *user_data); 190 gboolean (*start) (struct avdtp *session, struct avdtp_local_sep *lsep, 191 struct avdtp_stream *stream, uint8_t *err, 192 void *user_data); 193 gboolean (*suspend) (struct avdtp *session, 194 struct avdtp_local_sep *sep, 195 struct avdtp_stream *stream, uint8_t *err, 196 void *user_data); 197 gboolean (*close) (struct avdtp *session, struct avdtp_local_sep *sep, 198 struct avdtp_stream *stream, uint8_t *err, 199 void *user_data); 200 gboolean (*abort) (struct avdtp *session, struct avdtp_local_sep *sep, 201 struct avdtp_stream *stream, uint8_t *err, 202 void *user_data); 203 gboolean (*reconfigure) (struct avdtp *session, 204 struct avdtp_local_sep *lsep, 205 uint8_t *err, void *user_data); 206 gboolean (*delayreport) (struct avdtp *session, 207 struct avdtp_local_sep *lsep, 208 uint8_t rseid, uint16_t delay, 209 uint8_t *err, void *user_data); 210 }; 211 212 typedef void (*avdtp_discover_cb_t) (struct avdtp *session, GSList *seps, 213 struct avdtp_error *err, void *user_data); 214 215 struct avdtp *avdtp_get(bdaddr_t *src, bdaddr_t *dst); 216 217 void avdtp_unref(struct avdtp *session); 218 struct avdtp *avdtp_ref(struct avdtp *session); 219 220 gboolean avdtp_is_connected(const bdaddr_t *src, const bdaddr_t *dst); 221 222 struct avdtp_service_capability *avdtp_service_cap_new(uint8_t category, 223 void *data, int size); 224 225 struct avdtp_remote_sep *avdtp_get_remote_sep(struct avdtp *session, 226 uint8_t seid); 227 228 uint8_t avdtp_get_seid(struct avdtp_remote_sep *sep); 229 230 uint8_t avdtp_get_type(struct avdtp_remote_sep *sep); 231 232 struct avdtp_service_capability *avdtp_get_codec(struct avdtp_remote_sep *sep); 233 234 gboolean avdtp_get_delay_reporting(struct avdtp_remote_sep *sep); 235 236 struct avdtp_stream *avdtp_get_stream(struct avdtp_remote_sep *sep); 237 238 int avdtp_discover(struct avdtp *session, avdtp_discover_cb_t cb, 239 void *user_data); 240 241 gboolean avdtp_has_stream(struct avdtp *session, struct avdtp_stream *stream); 242 243 unsigned int avdtp_stream_add_cb(struct avdtp *session, 244 struct avdtp_stream *stream, 245 avdtp_stream_state_cb cb, void *data); 246 gboolean avdtp_stream_remove_cb(struct avdtp *session, 247 struct avdtp_stream *stream, 248 unsigned int id); 249 250 gboolean avdtp_stream_get_transport(struct avdtp_stream *stream, int *sock, 251 uint16_t *imtu, uint16_t *omtu, 252 GSList **caps); 253 struct avdtp_service_capability *avdtp_stream_get_codec( 254 struct avdtp_stream *stream); 255 gboolean avdtp_stream_has_capability(struct avdtp_stream *stream, 256 struct avdtp_service_capability *cap); 257 gboolean avdtp_stream_has_capabilities(struct avdtp_stream *stream, 258 GSList *caps); 259 260 unsigned int avdtp_add_state_cb(avdtp_session_state_cb cb, void *user_data); 261 262 gboolean avdtp_remove_state_cb(unsigned int id); 263 264 int avdtp_set_configuration(struct avdtp *session, 265 struct avdtp_remote_sep *rsep, 266 struct avdtp_local_sep *lsep, 267 GSList *caps, 268 struct avdtp_stream **stream); 269 270 int avdtp_get_configuration(struct avdtp *session, 271 struct avdtp_stream *stream); 272 273 int avdtp_open(struct avdtp *session, struct avdtp_stream *stream); 274 int avdtp_reconfigure(struct avdtp *session, GSList *caps, 275 struct avdtp_stream *stream); 276 int avdtp_start(struct avdtp *session, struct avdtp_stream *stream); 277 int avdtp_suspend(struct avdtp *session, struct avdtp_stream *stream); 278 int avdtp_close(struct avdtp *session, struct avdtp_stream *stream, 279 gboolean immediate); 280 int avdtp_abort(struct avdtp *session, struct avdtp_stream *stream); 281 int avdtp_delay_report(struct avdtp *session, struct avdtp_stream *stream, 282 uint16_t delay); 283 284 struct avdtp_local_sep *avdtp_register_sep(const bdaddr_t *src, uint8_t type, 285 uint8_t media_type, 286 uint8_t codec_type, 287 gboolean delay_reporting, 288 struct avdtp_sep_ind *ind, 289 struct avdtp_sep_cfm *cfm, 290 void *user_data); 291 292 /* Find a matching pair of local and remote SEP ID's */ 293 int avdtp_get_seps(struct avdtp *session, uint8_t type, uint8_t media, 294 uint8_t codec, struct avdtp_local_sep **lsep, 295 struct avdtp_remote_sep **rsep); 296 297 int avdtp_unregister_sep(struct avdtp_local_sep *sep); 298 299 avdtp_state_t avdtp_sep_get_state(struct avdtp_local_sep *sep); 300 301 void avdtp_error_init(struct avdtp_error *err, uint8_t type, int id); 302 const char *avdtp_strerror(struct avdtp_error *err); 303 avdtp_error_type_t avdtp_error_type(struct avdtp_error *err); 304 int avdtp_error_error_code(struct avdtp_error *err); 305 int avdtp_error_posix_errno(struct avdtp_error *err); 306 307 void avdtp_get_peers(struct avdtp *session, bdaddr_t *src, bdaddr_t *dst); 308 309 void avdtp_set_auto_disconnect(struct avdtp *session, gboolean auto_dc); 310 gboolean avdtp_stream_setup_active(struct avdtp *session); 311 312 int avdtp_init(const bdaddr_t *src, GKeyFile *config, uint16_t *version); 313 void avdtp_exit(const bdaddr_t *src); 314
