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 file contains interfaces which are internal to AVDTP. 22 * 23 ******************************************************************************/ 24 #ifndef AVDT_INT_H 25 #define AVDT_INT_H 26 27 #include "gki.h" 28 #include "avdt_api.h" 29 #include "avdtc_api.h" 30 #include "avdt_defs.h" 31 #include "l2c_api.h" 32 #include "btm_api.h" 33 34 #ifndef AVDT_DEBUG 35 #if (!defined BTTRC_INCLUDED || BTTRC_INCLUDED == FALSE) 36 #define AVDT_DEBUG TRUE 37 #else 38 #define AVDT_DEBUG FALSE 39 #endif 40 #endif 41 42 /***************************************************************************** 43 ** constants 44 *****************************************************************************/ 45 46 /* channel types */ 47 enum { 48 AVDT_CHAN_SIG, /* signaling channel */ 49 AVDT_CHAN_MEDIA, /* media channel */ 50 #if AVDT_REPORTING == TRUE 51 AVDT_CHAN_REPORT, /* reporting channel */ 52 #endif 53 AVDT_CHAN_NUM_TYPES 54 }; 55 56 /* protocol service capabilities of this AVDTP implementation */ 57 /* for now multiplexing will be used only for fragmentation */ 58 #if ((AVDT_MULTIPLEXING == TRUE) && (AVDT_REPORTING == TRUE)) 59 #define AVDT_PSC (AVDT_PSC_TRANS | AVDT_PSC_MUX | AVDT_PSC_REPORT | AVDT_PSC_DELAY_RPT) 60 #define AVDT_LEG_PSC (AVDT_PSC_TRANS | AVDT_PSC_MUX | AVDT_PSC_REPORT) 61 #else /* AVDT_MULTIPLEXING && AVDT_REPORTING */ 62 63 #if (AVDT_MULTIPLEXING == TRUE) 64 #define AVDT_PSC (AVDT_PSC_TRANS | AVDT_PSC_MUX | AVDT_PSC_DELAY_RPT) 65 #define AVDT_LEG_PSC (AVDT_PSC_TRANS | AVDT_PSC_MUX) 66 #else /* AVDT_MULTIPLEXING */ 67 68 #if (AVDT_REPORTING == TRUE) 69 #define AVDT_PSC (AVDT_PSC_TRANS | AVDT_PSC_REPORT | AVDT_PSC_DELAY_RPT) 70 #define AVDT_LEG_PSC (AVDT_PSC_TRANS | AVDT_PSC_REPORT) 71 #else /* AVDT_REPORTING */ 72 #define AVDT_PSC (AVDT_PSC_TRANS | AVDT_PSC_DELAY_RPT) 73 #define AVDT_LEG_PSC (AVDT_PSC_TRANS) 74 #endif /* AVDT_REPORTING */ 75 76 #endif /* AVDT_MULTIPLEXING */ 77 78 #endif /* AVDT_MULTIPLEXING && AVDT_REPORTING */ 79 80 /* initiator/acceptor signaling roles */ 81 #define AVDT_CLOSE_ACP 0 82 #define AVDT_CLOSE_INT 1 83 #define AVDT_OPEN_ACP 2 84 #define AVDT_OPEN_INT 3 85 86 /* states for avdt_scb_verify */ 87 #define AVDT_VERIFY_OPEN 0 88 #define AVDT_VERIFY_STREAMING 1 89 #define AVDT_VERIFY_SUSPEND 2 90 #define AVDT_VERIFY_START 3 91 92 /* to distinguish CCB events from SCB events */ 93 #define AVDT_CCB_MKR 0x80 94 95 /* offset where AVDTP signaling message header starts in message */ 96 #define AVDT_HDR_OFFSET (L2CAP_MIN_OFFSET + AVDT_NUM_SEPS) 97 98 /* offset where AVDTP signaling message content starts; 99 ** use the size of a start header since it's the largest possible 100 ** layout of signaling message in a buffer is: 101 ** 102 ** | BT_HDR | SCB handles | L2CAP + HCI header | AVDTP header | data ... | 103 ** 104 ** Note that we "hide" the scb handles at the top of the message buffer. 105 */ 106 #define AVDT_MSG_OFFSET (L2CAP_MIN_OFFSET + AVDT_NUM_SEPS + AVDT_LEN_TYPE_START) 107 108 /* scb transport channel connect timeout value */ 109 #define AVDT_SCB_TC_CONN_TOUT 10 110 111 /* scb transport channel disconnect timeout value */ 112 #define AVDT_SCB_TC_DISC_TOUT 10 113 114 /* maximum number of command retransmissions */ 115 #ifndef AVDT_RET_MAX 116 #define AVDT_RET_MAX 1 117 #endif 118 119 120 /* ccb state machine states */ 121 enum { 122 AVDT_CCB_IDLE_ST, 123 AVDT_CCB_OPENING_ST, 124 AVDT_CCB_OPEN_ST, 125 AVDT_CCB_CLOSING_ST 126 }; 127 128 /* state machine action enumeration list */ 129 enum { 130 AVDT_CCB_CHAN_OPEN, 131 AVDT_CCB_CHAN_CLOSE, 132 AVDT_CCB_CHK_CLOSE, 133 AVDT_CCB_HDL_DISCOVER_CMD, 134 AVDT_CCB_HDL_DISCOVER_RSP, 135 AVDT_CCB_HDL_GETCAP_CMD, 136 AVDT_CCB_HDL_GETCAP_RSP, 137 AVDT_CCB_HDL_START_CMD, 138 AVDT_CCB_HDL_START_RSP, 139 AVDT_CCB_HDL_SUSPEND_CMD, 140 AVDT_CCB_HDL_SUSPEND_RSP, 141 AVDT_CCB_SND_DISCOVER_CMD, 142 AVDT_CCB_SND_DISCOVER_RSP, 143 AVDT_CCB_SND_GETCAP_CMD, 144 AVDT_CCB_SND_GETCAP_RSP, 145 AVDT_CCB_SND_START_CMD, 146 AVDT_CCB_SND_START_RSP, 147 AVDT_CCB_SND_SUSPEND_CMD, 148 AVDT_CCB_SND_SUSPEND_RSP, 149 AVDT_CCB_CLEAR_CMDS, 150 AVDT_CCB_CMD_FAIL, 151 AVDT_CCB_FREE_CMD, 152 AVDT_CCB_CONG_STATE, 153 AVDT_CCB_RET_CMD, 154 AVDT_CCB_SND_CMD, 155 AVDT_CCB_SND_MSG, 156 AVDT_CCB_SET_RECONN, 157 AVDT_CCB_CLR_RECONN, 158 AVDT_CCB_CHK_RECONN, 159 AVDT_CCB_CHK_TIMER, 160 AVDT_CCB_SET_CONN, 161 AVDT_CCB_SET_DISCONN, 162 AVDT_CCB_DO_DISCONN, 163 AVDT_CCB_LL_CLOSED, 164 AVDT_CCB_LL_OPENED, 165 AVDT_CCB_DEALLOC, 166 AVDT_CCB_NUM_ACTIONS 167 }; 168 169 #define AVDT_CCB_IGNORE AVDT_CCB_NUM_ACTIONS 170 171 /* ccb state machine events */ 172 enum { 173 AVDT_CCB_API_DISCOVER_REQ_EVT, 174 AVDT_CCB_API_GETCAP_REQ_EVT, 175 AVDT_CCB_API_START_REQ_EVT, 176 AVDT_CCB_API_SUSPEND_REQ_EVT, 177 AVDT_CCB_API_DISCOVER_RSP_EVT, 178 AVDT_CCB_API_GETCAP_RSP_EVT, 179 AVDT_CCB_API_START_RSP_EVT, 180 AVDT_CCB_API_SUSPEND_RSP_EVT, 181 AVDT_CCB_API_CONNECT_REQ_EVT, 182 AVDT_CCB_API_DISCONNECT_REQ_EVT, 183 AVDT_CCB_MSG_DISCOVER_CMD_EVT, 184 AVDT_CCB_MSG_GETCAP_CMD_EVT, 185 AVDT_CCB_MSG_START_CMD_EVT, 186 AVDT_CCB_MSG_SUSPEND_CMD_EVT, 187 AVDT_CCB_MSG_DISCOVER_RSP_EVT, 188 AVDT_CCB_MSG_GETCAP_RSP_EVT, 189 AVDT_CCB_MSG_START_RSP_EVT, 190 AVDT_CCB_MSG_SUSPEND_RSP_EVT, 191 AVDT_CCB_RCVRSP_EVT, 192 AVDT_CCB_SENDMSG_EVT, 193 AVDT_CCB_RET_TOUT_EVT, 194 AVDT_CCB_RSP_TOUT_EVT, 195 AVDT_CCB_IDLE_TOUT_EVT, 196 AVDT_CCB_UL_OPEN_EVT, 197 AVDT_CCB_UL_CLOSE_EVT, 198 AVDT_CCB_LL_OPEN_EVT, 199 AVDT_CCB_LL_CLOSE_EVT, 200 AVDT_CCB_LL_CONG_EVT 201 }; 202 203 204 /* scb state machine states; these state values are private to this module so 205 ** the scb state cannot be read or set by actions functions 206 */ 207 enum { 208 AVDT_SCB_IDLE_ST, 209 AVDT_SCB_CONF_ST, 210 AVDT_SCB_OPENING_ST, 211 AVDT_SCB_OPEN_ST, 212 AVDT_SCB_STREAM_ST, 213 AVDT_SCB_CLOSING_ST 214 }; 215 216 /* state machine action enumeration list */ 217 enum { 218 AVDT_SCB_HDL_ABORT_CMD, 219 AVDT_SCB_HDL_ABORT_RSP, 220 AVDT_SCB_HDL_CLOSE_CMD, 221 AVDT_SCB_HDL_CLOSE_RSP, 222 AVDT_SCB_HDL_GETCONFIG_CMD, 223 AVDT_SCB_HDL_GETCONFIG_RSP, 224 AVDT_SCB_HDL_OPEN_CMD, 225 AVDT_SCB_HDL_OPEN_REJ, 226 AVDT_SCB_HDL_OPEN_RSP, 227 AVDT_SCB_HDL_PKT, 228 AVDT_SCB_DROP_PKT, 229 AVDT_SCB_HDL_RECONFIG_CMD, 230 AVDT_SCB_HDL_RECONFIG_RSP, 231 AVDT_SCB_HDL_SECURITY_CMD, 232 AVDT_SCB_HDL_SECURITY_RSP, 233 AVDT_SCB_HDL_SETCONFIG_CMD, 234 AVDT_SCB_HDL_SETCONFIG_REJ, 235 AVDT_SCB_HDL_SETCONFIG_RSP, 236 AVDT_SCB_HDL_START_CMD, 237 AVDT_SCB_HDL_START_RSP, 238 AVDT_SCB_HDL_SUSPEND_CMD, 239 AVDT_SCB_HDL_SUSPEND_RSP, 240 AVDT_SCB_HDL_TC_CLOSE, 241 #if AVDT_REPORTING == TRUE 242 AVDT_SCB_HDL_TC_CLOSE_STO, 243 #endif 244 AVDT_SCB_HDL_TC_OPEN, 245 #if AVDT_REPORTING == TRUE 246 AVDT_SCB_HDL_TC_OPEN_STO, 247 #endif 248 AVDT_SCB_SND_DELAY_RPT_REQ, 249 AVDT_SCB_HDL_DELAY_RPT_CMD, 250 AVDT_SCB_HDL_DELAY_RPT_RSP, 251 AVDT_SCB_HDL_WRITE_REQ, 252 AVDT_SCB_SND_ABORT_REQ, 253 AVDT_SCB_SND_ABORT_RSP, 254 AVDT_SCB_SND_CLOSE_REQ, 255 AVDT_SCB_SND_STREAM_CLOSE, 256 AVDT_SCB_SND_CLOSE_RSP, 257 AVDT_SCB_SND_GETCONFIG_REQ, 258 AVDT_SCB_SND_GETCONFIG_RSP, 259 AVDT_SCB_SND_OPEN_REQ, 260 AVDT_SCB_SND_OPEN_RSP, 261 AVDT_SCB_SND_RECONFIG_REQ, 262 AVDT_SCB_SND_RECONFIG_RSP, 263 AVDT_SCB_SND_SECURITY_REQ, 264 AVDT_SCB_SND_SECURITY_RSP, 265 AVDT_SCB_SND_SETCONFIG_REQ, 266 AVDT_SCB_SND_SETCONFIG_REJ, 267 AVDT_SCB_SND_SETCONFIG_RSP, 268 AVDT_SCB_SND_TC_CLOSE, 269 AVDT_SCB_CB_ERR, 270 AVDT_SCB_CONG_STATE, 271 AVDT_SCB_REJ_STATE, 272 AVDT_SCB_REJ_IN_USE, 273 AVDT_SCB_REJ_NOT_IN_USE, 274 AVDT_SCB_SET_REMOVE, 275 AVDT_SCB_FREE_PKT, 276 AVDT_SCB_CLR_PKT, 277 AVDT_SCB_CHK_SND_PKT, 278 AVDT_SCB_TC_TIMER, 279 AVDT_SCB_CLR_VARS, 280 AVDT_SCB_DEALLOC, 281 AVDT_SCB_NUM_ACTIONS 282 }; 283 284 #define AVDT_SCB_IGNORE AVDT_SCB_NUM_ACTIONS 285 286 /* scb state machine events */ 287 enum { 288 AVDT_SCB_API_REMOVE_EVT, 289 AVDT_SCB_API_WRITE_REQ_EVT, 290 AVDT_SCB_API_GETCONFIG_REQ_EVT, 291 AVDT_SCB_API_DELAY_RPT_REQ_EVT, 292 AVDT_SCB_API_SETCONFIG_REQ_EVT, 293 AVDT_SCB_API_OPEN_REQ_EVT, 294 AVDT_SCB_API_CLOSE_REQ_EVT, 295 AVDT_SCB_API_RECONFIG_REQ_EVT, 296 AVDT_SCB_API_SECURITY_REQ_EVT, 297 AVDT_SCB_API_ABORT_REQ_EVT, 298 AVDT_SCB_API_GETCONFIG_RSP_EVT, 299 AVDT_SCB_API_SETCONFIG_RSP_EVT, 300 AVDT_SCB_API_SETCONFIG_REJ_EVT, 301 AVDT_SCB_API_OPEN_RSP_EVT, 302 AVDT_SCB_API_CLOSE_RSP_EVT, 303 AVDT_SCB_API_RECONFIG_RSP_EVT, 304 AVDT_SCB_API_SECURITY_RSP_EVT, 305 AVDT_SCB_API_ABORT_RSP_EVT, 306 AVDT_SCB_MSG_SETCONFIG_CMD_EVT, 307 AVDT_SCB_MSG_GETCONFIG_CMD_EVT, 308 AVDT_SCB_MSG_OPEN_CMD_EVT, 309 AVDT_SCB_MSG_START_CMD_EVT, 310 AVDT_SCB_MSG_SUSPEND_CMD_EVT, 311 AVDT_SCB_MSG_CLOSE_CMD_EVT, 312 AVDT_SCB_MSG_ABORT_CMD_EVT, 313 AVDT_SCB_MSG_RECONFIG_CMD_EVT, 314 AVDT_SCB_MSG_SECURITY_CMD_EVT, 315 AVDT_SCB_MSG_DELAY_RPT_CMD_EVT, 316 AVDT_SCB_MSG_DELAY_RPT_RSP_EVT, 317 AVDT_SCB_MSG_SETCONFIG_RSP_EVT, 318 AVDT_SCB_MSG_GETCONFIG_RSP_EVT, 319 AVDT_SCB_MSG_OPEN_RSP_EVT, 320 AVDT_SCB_MSG_START_RSP_EVT, 321 AVDT_SCB_MSG_SUSPEND_RSP_EVT, 322 AVDT_SCB_MSG_CLOSE_RSP_EVT, 323 AVDT_SCB_MSG_ABORT_RSP_EVT, 324 AVDT_SCB_MSG_RECONFIG_RSP_EVT, 325 AVDT_SCB_MSG_SECURITY_RSP_EVT, 326 AVDT_SCB_MSG_SETCONFIG_REJ_EVT, 327 AVDT_SCB_MSG_OPEN_REJ_EVT, 328 AVDT_SCB_MSG_START_REJ_EVT, 329 AVDT_SCB_MSG_SUSPEND_REJ_EVT, 330 AVDT_SCB_TC_TOUT_EVT, 331 AVDT_SCB_TC_OPEN_EVT, 332 AVDT_SCB_TC_CLOSE_EVT, 333 AVDT_SCB_TC_CONG_EVT, 334 AVDT_SCB_TC_DATA_EVT, 335 AVDT_SCB_CC_CLOSE_EVT 336 }; 337 338 /* adaption layer number of stream routing table entries */ 339 #if AVDT_REPORTING == TRUE 340 /* 2 channels(1 media, 1 report) for each SEP and one for signalling */ 341 #define AVDT_NUM_RT_TBL ((AVDT_NUM_SEPS<<1) + 1) 342 #else 343 #define AVDT_NUM_RT_TBL (AVDT_NUM_SEPS + 1) 344 #endif 345 346 /* adaption layer number of transport channel table entries - moved to target.h 347 #define AVDT_NUM_TC_TBL (AVDT_NUM_SEPS + AVDT_NUM_LINKS) */ 348 349 /* "states" used in transport channel table */ 350 #define AVDT_AD_ST_UNUSED 0 /* Unused - unallocated */ 351 #define AVDT_AD_ST_IDLE 1 /* No connection */ 352 #define AVDT_AD_ST_ACP 2 /* Waiting to accept a connection */ 353 #define AVDT_AD_ST_INT 3 /* Initiating a connection */ 354 #define AVDT_AD_ST_CONN 4 /* Waiting for connection confirm */ 355 #define AVDT_AD_ST_CFG 5 /* Waiting for configuration complete */ 356 #define AVDT_AD_ST_OPEN 6 /* Channel opened */ 357 #define AVDT_AD_ST_SEC_INT 7 /* Security process as INT */ 358 #define AVDT_AD_ST_SEC_ACP 8 /* Security process as ACP */ 359 360 /* Configuration flags. tAVDT_TC_TBL.cfg_flags */ 361 #define AVDT_L2C_CFG_IND_DONE (1<<0) 362 #define AVDT_L2C_CFG_CFM_DONE (1<<1) 363 #define AVDT_L2C_CFG_CONN_INT (1<<2) 364 #define AVDT_L2C_CFG_CONN_ACP (1<<3) 365 366 367 /* result code for avdt_ad_write_req() (L2CA_DataWrite()) */ 368 #define AVDT_AD_FAILED L2CAP_DW_FAILED /* FALSE */ 369 #define AVDT_AD_SUCCESS L2CAP_DW_SUCCESS /* TRUE */ 370 #define AVDT_AD_CONGESTED L2CAP_DW_CONGESTED /* 2 */ 371 372 /***************************************************************************** 373 ** data types 374 *****************************************************************************/ 375 376 /* msg union of all message parameter types */ 377 typedef union { 378 tAVDT_EVT_HDR hdr; 379 tAVDT_EVT_HDR single; 380 tAVDT_SETCONFIG config_cmd; 381 tAVDT_CONFIG reconfig_cmd; 382 tAVDT_MULTI multi; 383 tAVDT_SECURITY security_cmd; 384 tAVDT_DISCOVER discover_rsp; 385 tAVDT_CONFIG svccap; 386 tAVDT_SECURITY security_rsp; 387 tAVDT_DELAY_RPT delay_rpt_cmd; 388 } tAVDT_MSG; 389 390 /* data type for AVDT_CCB_API_DISCOVER_REQ_EVT */ 391 typedef struct { 392 tAVDT_CTRL_CBACK *p_cback; 393 tAVDT_SEP_INFO *p_sep_info; 394 UINT8 num_seps; 395 } tAVDT_CCB_API_DISCOVER; 396 397 /* data type for AVDT_CCB_API_GETCAP_REQ_EVT */ 398 typedef struct { 399 tAVDT_EVT_HDR single; 400 tAVDT_CTRL_CBACK *p_cback; 401 tAVDT_CFG *p_cfg; 402 } tAVDT_CCB_API_GETCAP; 403 404 /* data type for AVDT_CCB_API_CONNECT_REQ_EVT */ 405 typedef struct { 406 tAVDT_CTRL_CBACK *p_cback; 407 UINT8 sec_mask; 408 } tAVDT_CCB_API_CONNECT; 409 410 /* data type for AVDT_CCB_API_DISCONNECT_REQ_EVT */ 411 typedef struct { 412 tAVDT_CTRL_CBACK *p_cback; 413 } tAVDT_CCB_API_DISCONNECT; 414 415 /* union associated with ccb state machine events */ 416 typedef union { 417 tAVDT_CCB_API_DISCOVER discover; 418 tAVDT_CCB_API_GETCAP getcap; 419 tAVDT_CCB_API_CONNECT connect; 420 tAVDT_CCB_API_DISCONNECT disconnect; 421 tAVDT_MSG msg; 422 BOOLEAN llcong; 423 UINT8 err_code; 424 } tAVDT_CCB_EVT; 425 426 /* channel control block type */ 427 typedef struct { 428 BD_ADDR peer_addr; /* BD address of peer */ 429 TIMER_LIST_ENT timer_entry; /* CCB timer list entry */ 430 BUFFER_Q cmd_q; /* Queue for outgoing command messages */ 431 BUFFER_Q rsp_q; /* Queue for outgoing response and reject messages */ 432 tAVDT_CTRL_CBACK *proc_cback; /* Procedure callback function */ 433 tAVDT_CTRL_CBACK *p_conn_cback; /* Connection/disconnection callback function */ 434 void *p_proc_data; /* Pointer to data storage for procedure */ 435 BT_HDR *p_curr_cmd; /* Current command being sent awaiting response */ 436 BT_HDR *p_curr_msg; /* Current message being sent */ 437 BT_HDR *p_rx_msg; /* Current message being received */ 438 BOOLEAN allocated; /* Whether ccb is allocated */ 439 UINT8 state; /* The CCB state machine state */ 440 BOOLEAN ll_opened; /* TRUE if LL is opened */ 441 BOOLEAN proc_busy; /* TRUE when a discover or get capabilities procedure in progress */ 442 UINT8 proc_param; /* Procedure parameter; either SEID for get capabilities or number of SEPS for discover */ 443 BOOLEAN cong; /* Whether signaling channel is congested */ 444 UINT8 label; /* Message header "label" (sequence number) */ 445 BOOLEAN reconn; /* If TRUE, reinitiate connection after transitioning from CLOSING to IDLE state */ 446 UINT8 ret_count; /* Command retransmission count */ 447 } tAVDT_CCB; 448 449 /* type for action functions */ 450 typedef void (*tAVDT_CCB_ACTION)(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 451 452 /* type for AVDT_SCB_API_WRITE_REQ_EVT */ 453 typedef struct { 454 BT_HDR *p_buf; 455 UINT32 time_stamp; 456 #if AVDT_MULTIPLEXING == TRUE 457 BUFFER_Q frag_q; /* Queue for outgoing media fragments. p_buf should be 0 */ 458 UINT8 *p_data; 459 UINT32 data_len; 460 #endif 461 UINT8 m_pt; 462 tAVDT_DATA_OPT_MASK opt; 463 } tAVDT_SCB_APIWRITE; 464 465 /* type for AVDT_SCB_TC_CLOSE_EVT */ 466 typedef struct { 467 UINT8 old_tc_state; /* channel state before closed */ 468 UINT8 tcid; /* TCID */ 469 UINT8 type; /* channel type */ 470 } tAVDT_SCB_TC_CLOSE; 471 472 /* type for scb event data */ 473 typedef union { 474 tAVDT_MSG msg; 475 tAVDT_SCB_APIWRITE apiwrite; 476 tAVDT_DELAY_RPT apidelay; 477 tAVDT_OPEN open; 478 tAVDT_SCB_TC_CLOSE close; 479 BOOLEAN llcong; 480 BT_HDR *p_pkt; 481 } tAVDT_SCB_EVT; 482 483 /* stream control block type */ 484 typedef struct { 485 tAVDT_CS cs; /* stream creation struct */ 486 tAVDT_CFG curr_cfg; /* current configuration */ 487 tAVDT_CFG req_cfg; /* requested configuration */ 488 TIMER_LIST_ENT timer_entry; /* timer entry */ 489 BT_HDR *p_pkt; /* packet waiting to be sent */ 490 tAVDT_CCB *p_ccb; /* ccb associated with this scb */ 491 UINT16 media_seq; /* media packet sequence number */ 492 BOOLEAN allocated; /* whether scb is allocated or unused */ 493 BOOLEAN in_use; /* whether stream being used by peer */ 494 BOOLEAN sink_activated; /* A2DP Sink activated/de-activated from Application */ 495 UINT8 role; /* initiator/acceptor role in current procedure */ 496 BOOLEAN remove; /* whether CB is marked for removal */ 497 UINT8 state; /* state machine state */ 498 UINT8 peer_seid; /* SEID of peer stream */ 499 UINT8 curr_evt; /* current event; set only by state machine */ 500 BOOLEAN cong; /* Whether media transport channel is congested */ 501 UINT8 close_code; /* Error code received in close response */ 502 #if AVDT_MULTIPLEXING == TRUE 503 BUFFER_Q frag_q; /* Queue for outgoing media fragments */ 504 UINT32 frag_off; /* length of already received media fragments */ 505 UINT32 frag_org_len; /* original length before fragmentation of receiving media packet */ 506 UINT8 *p_next_frag; /* next fragment to send */ 507 UINT8 *p_media_buf; /* buffer for media packet assigned by AVDT_SetMediaBuf */ 508 UINT32 media_buf_len; /* length of buffer for media packet assigned by AVDT_SetMediaBuf */ 509 #endif 510 } tAVDT_SCB; 511 512 /* type for action functions */ 513 typedef void (*tAVDT_SCB_ACTION)(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 514 515 /* adaption layer type for transport channel table */ 516 typedef struct { 517 UINT16 peer_mtu; /* L2CAP mtu of the peer device */ 518 UINT16 my_mtu; /* Our MTU for this channel */ 519 UINT16 my_flush_to; /* Our flush timeout for this channel */ 520 UINT16 lcid; 521 UINT8 tcid; /* transport channel id */ 522 UINT8 ccb_idx; /* channel control block associated with this tc */ 523 UINT8 state; /* transport channel state */ 524 UINT8 cfg_flags; /* L2CAP configuration flags */ 525 UINT8 id; 526 } tAVDT_TC_TBL; 527 528 /* adaption layer type for stream routing table */ 529 typedef struct { 530 UINT16 lcid; /* L2CAP LCID of the associated transport channel */ 531 UINT8 scb_hdl; /* stream control block associated with this tc */ 532 } tAVDT_RT_TBL; 533 534 535 /* adaption layer control block */ 536 typedef struct { 537 tAVDT_RT_TBL rt_tbl[AVDT_NUM_LINKS][AVDT_NUM_RT_TBL]; 538 tAVDT_TC_TBL tc_tbl[AVDT_NUM_TC_TBL]; 539 UINT8 lcid_tbl[MAX_L2CAP_CHANNELS]; /* map LCID to tc_tbl index */ 540 } tAVDT_AD; 541 542 /* Control block for AVDT */ 543 typedef struct { 544 tAVDT_REG rcb; /* registration control block */ 545 tAVDT_CCB ccb[AVDT_NUM_LINKS]; /* channel control blocks */ 546 tAVDT_SCB scb[AVDT_NUM_SEPS]; /* stream control blocks */ 547 tAVDT_AD ad; /* adaption layer control block */ 548 tAVDTC_CTRL_CBACK *p_conf_cback; /* conformance callback function */ 549 tAVDT_CCB_ACTION *p_ccb_act; /* pointer to CCB action functions */ 550 tAVDT_SCB_ACTION *p_scb_act; /* pointer to SCB action functions */ 551 tAVDT_CTRL_CBACK *p_conn_cback; /* connection callback function */ 552 UINT8 trace_level; /* trace level */ 553 } tAVDT_CB; 554 555 556 /***************************************************************************** 557 ** function declarations 558 *****************************************************************************/ 559 560 /* CCB function declarations */ 561 extern void avdt_ccb_init(void); 562 extern void avdt_ccb_event(tAVDT_CCB *p_ccb, UINT8 event, tAVDT_CCB_EVT *p_data); 563 extern tAVDT_CCB *avdt_ccb_by_bd(BD_ADDR bd_addr); 564 extern tAVDT_CCB *avdt_ccb_alloc(BD_ADDR bd_addr); 565 extern void avdt_ccb_dealloc(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 566 extern UINT8 avdt_ccb_to_idx(tAVDT_CCB *p_ccb); 567 extern tAVDT_CCB *avdt_ccb_by_idx(UINT8 idx); 568 569 /* CCB action functions */ 570 extern void avdt_ccb_chan_open(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 571 extern void avdt_ccb_chan_close(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 572 extern void avdt_ccb_chk_close(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 573 extern void avdt_ccb_hdl_discover_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 574 extern void avdt_ccb_hdl_discover_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 575 extern void avdt_ccb_hdl_getcap_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 576 extern void avdt_ccb_hdl_getcap_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 577 extern void avdt_ccb_hdl_start_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 578 extern void avdt_ccb_hdl_start_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 579 extern void avdt_ccb_hdl_suspend_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 580 extern void avdt_ccb_hdl_suspend_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 581 extern void avdt_ccb_snd_discover_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 582 extern void avdt_ccb_snd_discover_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 583 extern void avdt_ccb_snd_getcap_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 584 extern void avdt_ccb_snd_getcap_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 585 extern void avdt_ccb_snd_start_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 586 extern void avdt_ccb_snd_start_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 587 extern void avdt_ccb_snd_suspend_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 588 extern void avdt_ccb_snd_suspend_rsp(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 589 extern void avdt_ccb_clear_cmds(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 590 extern void avdt_ccb_cmd_fail(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 591 extern void avdt_ccb_free_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 592 extern void avdt_ccb_cong_state(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 593 extern void avdt_ccb_ret_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 594 extern void avdt_ccb_snd_cmd(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 595 extern void avdt_ccb_snd_msg(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 596 extern void avdt_ccb_set_reconn(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 597 extern void avdt_ccb_clr_reconn(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 598 extern void avdt_ccb_chk_reconn(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 599 extern void avdt_ccb_chk_timer(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 600 extern void avdt_ccb_set_conn(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 601 extern void avdt_ccb_set_disconn(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 602 extern void avdt_ccb_do_disconn(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 603 extern void avdt_ccb_ll_closed(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 604 extern void avdt_ccb_ll_opened(tAVDT_CCB *p_ccb, tAVDT_CCB_EVT *p_data); 605 606 /* SCB function prototypes */ 607 extern void avdt_scb_event(tAVDT_SCB *p_scb, UINT8 event, tAVDT_SCB_EVT *p_data); 608 extern void avdt_scb_init(void); 609 extern tAVDT_SCB *avdt_scb_alloc(tAVDT_CS *p_cs); 610 extern void avdt_scb_dealloc(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 611 extern UINT8 avdt_scb_to_hdl(tAVDT_SCB *p_scb); 612 extern tAVDT_SCB *avdt_scb_by_hdl(UINT8 hdl); 613 extern UINT8 avdt_scb_verify(tAVDT_CCB *p_ccb, UINT8 state, UINT8 *p_seid, UINT16 num_seid, UINT8 *p_err_code); 614 extern void avdt_scb_peer_seid_list(tAVDT_MULTI *p_multi); 615 extern UINT32 avdt_scb_gen_ssrc(tAVDT_SCB *p_scb); 616 617 /* SCB action functions */ 618 extern void avdt_scb_hdl_abort_cmd(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 619 extern void avdt_scb_hdl_abort_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 620 extern void avdt_scb_hdl_close_cmd(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 621 extern void avdt_scb_hdl_close_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 622 extern void avdt_scb_hdl_getconfig_cmd(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 623 extern void avdt_scb_hdl_getconfig_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 624 extern void avdt_scb_hdl_open_cmd(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 625 extern void avdt_scb_hdl_open_rej(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 626 extern void avdt_scb_hdl_open_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 627 extern void avdt_scb_hdl_pkt(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 628 extern void avdt_scb_drop_pkt(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 629 extern void avdt_scb_hdl_reconfig_cmd(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 630 extern void avdt_scb_hdl_reconfig_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 631 extern void avdt_scb_hdl_security_cmd(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 632 extern void avdt_scb_hdl_security_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 633 extern void avdt_scb_hdl_setconfig_cmd(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 634 extern void avdt_scb_hdl_setconfig_rej(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 635 extern void avdt_scb_hdl_setconfig_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 636 extern void avdt_scb_hdl_start_cmd(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 637 extern void avdt_scb_hdl_start_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 638 extern void avdt_scb_hdl_suspend_cmd(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 639 extern void avdt_scb_hdl_suspend_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 640 extern void avdt_scb_snd_delay_rpt_req(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 641 extern void avdt_scb_hdl_delay_rpt_cmd(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 642 extern void avdt_scb_hdl_delay_rpt_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 643 extern void avdt_scb_hdl_tc_close(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 644 extern void avdt_scb_hdl_tc_open(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 645 extern void avdt_scb_hdl_tc_close_sto(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 646 extern void avdt_scb_hdl_tc_open_sto(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 647 extern void avdt_scb_hdl_write_req(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 648 extern void avdt_scb_snd_abort_req(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 649 extern void avdt_scb_snd_abort_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 650 extern void avdt_scb_snd_close_req(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 651 extern void avdt_scb_snd_stream_close(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 652 extern void avdt_scb_snd_close_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 653 extern void avdt_scb_snd_getconfig_req(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 654 extern void avdt_scb_snd_getconfig_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 655 extern void avdt_scb_snd_open_req(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 656 extern void avdt_scb_snd_open_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 657 extern void avdt_scb_snd_reconfig_req(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 658 extern void avdt_scb_snd_reconfig_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 659 extern void avdt_scb_snd_security_req(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 660 extern void avdt_scb_snd_security_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 661 extern void avdt_scb_snd_setconfig_req(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 662 extern void avdt_scb_snd_setconfig_rej(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 663 extern void avdt_scb_snd_setconfig_rsp(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 664 extern void avdt_scb_snd_tc_close(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 665 extern void avdt_scb_cb_err(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 666 extern void avdt_scb_cong_state(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 667 extern void avdt_scb_rej_state(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 668 extern void avdt_scb_rej_in_use(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 669 extern void avdt_scb_rej_not_in_use(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 670 extern void avdt_scb_set_remove(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 671 extern void avdt_scb_free_pkt(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 672 extern void avdt_scb_chk_snd_pkt(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 673 extern void avdt_scb_clr_pkt(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 674 extern void avdt_scb_tc_timer(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 675 extern void avdt_scb_clr_vars(tAVDT_SCB *p_scb, tAVDT_SCB_EVT *p_data); 676 extern void avdt_scb_queue_frags(tAVDT_SCB *p_scb, UINT8 **pp_data, UINT32 *p_data_len, BUFFER_Q *pq); 677 678 /* msg function declarations */ 679 extern BOOLEAN avdt_msg_send(tAVDT_CCB *p_ccb, BT_HDR *p_msg); 680 extern void avdt_msg_send_cmd(tAVDT_CCB *p_ccb, void *p_scb, UINT8 sig_id, tAVDT_MSG *p_params); 681 extern void avdt_msg_send_rsp(tAVDT_CCB *p_ccb, UINT8 sig_id, tAVDT_MSG *p_params); 682 extern void avdt_msg_send_rej(tAVDT_CCB *p_ccb, UINT8 sig_id, tAVDT_MSG *p_params); 683 extern void avdt_msg_send_grej(tAVDT_CCB *p_ccb, UINT8 sig_id, tAVDT_MSG *p_params); 684 extern void avdt_msg_ind(tAVDT_CCB *p_ccb, BT_HDR *p_buf); 685 686 /* adaption layer function declarations */ 687 extern void avdt_ad_init(void); 688 extern UINT8 avdt_ad_type_to_tcid(UINT8 type, tAVDT_SCB *p_scb); 689 extern tAVDT_TC_TBL *avdt_ad_tc_tbl_by_st(UINT8 type, tAVDT_CCB *p_ccb, UINT8 state); 690 extern tAVDT_TC_TBL *avdt_ad_tc_tbl_by_lcid(UINT16 lcid); 691 extern tAVDT_TC_TBL *avdt_ad_tc_tbl_alloc(tAVDT_CCB *p_ccb); 692 extern UINT8 avdt_ad_tc_tbl_to_idx(tAVDT_TC_TBL *p_tbl); 693 extern void avdt_ad_tc_close_ind(tAVDT_TC_TBL *p_tbl, UINT16 reason); 694 extern void avdt_ad_tc_open_ind(tAVDT_TC_TBL *p_tbl); 695 extern void avdt_ad_tc_cong_ind(tAVDT_TC_TBL *p_tbl, BOOLEAN is_congested); 696 extern void avdt_ad_tc_data_ind(tAVDT_TC_TBL *p_tbl, BT_HDR *p_buf); 697 extern tAVDT_TC_TBL *avdt_ad_tc_tbl_by_type(UINT8 type, tAVDT_CCB *p_ccb, tAVDT_SCB *p_scb); 698 extern UINT8 avdt_ad_write_req(UINT8 type, tAVDT_CCB *p_ccb, tAVDT_SCB *p_scb, BT_HDR *p_buf); 699 extern void avdt_ad_open_req(UINT8 type, tAVDT_CCB *p_ccb, tAVDT_SCB *p_scb, UINT8 role); 700 extern void avdt_ad_close_req(UINT8 type, tAVDT_CCB *p_ccb, tAVDT_SCB *p_scb); 701 702 extern void avdt_process_timeout(TIMER_LIST_ENT *p_tle); 703 704 /***************************************************************************** 705 ** macros 706 *****************************************************************************/ 707 708 /* we store the scb and the label in the layer_specific field of the 709 ** current cmd 710 */ 711 #define AVDT_BLD_LAYERSPEC(ls, msg, label) \ 712 ls = (((label) << 4) | (msg)) 713 714 #define AVDT_LAYERSPEC_LABEL(ls) ((UINT8)((ls) >> 4)) 715 716 #define AVDT_LAYERSPEC_MSG(ls) ((UINT8)((ls) & 0x000F)) 717 718 /***************************************************************************** 719 ** global data 720 *****************************************************************************/ 721 #ifdef __cplusplus 722 extern "C" 723 { 724 #endif 725 726 /****************************************************************************** 727 ** Main Control Block 728 *******************************************************************************/ 729 #if AVDT_DYNAMIC_MEMORY == FALSE 730 AVDT_API extern tAVDT_CB avdt_cb; 731 #else 732 AVDT_API extern tAVDT_CB *avdt_cb_ptr; 733 #define avdt_cb (*avdt_cb_ptr) 734 #endif 735 736 737 /* L2CAP callback registration structure */ 738 extern const tL2CAP_APPL_INFO avdt_l2c_appl; 739 740 /* reject message event lookup table */ 741 extern const UINT8 avdt_msg_rej_2_evt[]; 742 #ifdef __cplusplus 743 } 744 #endif 745 746 #endif /* AVDT_INT_H */ 747