bta_ag_main.c revision e6f4ed85b19c49a3577b2c2842bb6ca20452ceb8
1/****************************************************************************** 2 * 3 * Copyright (C) 2003-2012 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 is the main implementation file for the BTA audio gateway. 22 * 23 ******************************************************************************/ 24 25#include <string.h> 26#include "bta_api.h" 27#include "bta_sys.h" 28#include "bta_ag_co.h" 29#include "bta_ag_int.h" 30#include "utl.h" 31 32/***************************************************************************** 33** Constants and types 34*****************************************************************************/ 35#ifndef BTA_AG_DEBUG 36#define BTA_AG_DEBUG FALSE 37#endif 38 39#if BTA_AG_DEBUG == TRUE 40static char *bta_ag_evt_str(UINT16 event, tBTA_AG_RES result); 41static char *bta_ag_state_str(UINT8 state); 42#endif 43 44/* state machine states */ 45enum 46{ 47 BTA_AG_INIT_ST, 48 BTA_AG_OPENING_ST, 49 BTA_AG_OPEN_ST, 50 BTA_AG_CLOSING_ST 51}; 52 53/* state machine action enumeration list */ 54enum 55{ 56 BTA_AG_REGISTER, 57 BTA_AG_DEREGISTER, 58 BTA_AG_START_OPEN, 59 BTA_AG_RFC_DO_OPEN, 60 BTA_AG_RFC_DO_CLOSE, 61 BTA_AG_START_DEREG, 62 BTA_AG_START_CLOSE, 63 BTA_AG_RFC_OPEN, 64 BTA_AG_OPEN_FAIL, 65 BTA_AG_RFC_ACP_OPEN, 66 BTA_AG_RFC_CLOSE, 67 BTA_AG_RFC_FAIL, 68 BTA_AG_RFC_DATA, 69 BTA_AG_DISC_INT_RES, 70 BTA_AG_DISC_FAIL, 71 BTA_AG_DISC_ACP_RES, 72 BTA_AG_FREE_DB, 73 BTA_AG_SCO_CONN_OPEN, 74 BTA_AG_SCO_CONN_CLOSE, 75 BTA_AG_SCO_LISTEN, 76 BTA_AG_SCO_OPEN, 77 BTA_AG_SCO_CLOSE, 78 BTA_AG_SCO_SHUTDOWN, 79 BTA_AG_POST_SCO_OPEN, 80 BTA_AG_POST_SCO_CLOSE, 81 BTA_AG_SVC_CONN_OPEN, 82 BTA_AG_RESULT, 83 BTA_AG_SETCODEC, 84 BTA_AG_SEND_RING, 85 BTA_AG_CI_SCO_DATA, 86 BTA_AG_CI_RX_DATA, 87 BTA_AG_RCVD_SLC_READY, 88 BTA_AG_NUM_ACTIONS 89}; 90 91#define BTA_AG_IGNORE BTA_AG_NUM_ACTIONS 92 93/* type for action functions */ 94typedef void (*tBTA_AG_ACTION)(tBTA_AG_SCB *p_scb, tBTA_AG_DATA *p_data); 95 96/* action functions */ 97const tBTA_AG_ACTION bta_ag_action[] = 98{ 99 bta_ag_register, 100 bta_ag_deregister, 101 bta_ag_start_open, 102 bta_ag_rfc_do_open, 103 bta_ag_rfc_do_close, 104 bta_ag_start_dereg, 105 bta_ag_start_close, 106 bta_ag_rfc_open, 107 bta_ag_open_fail, 108 bta_ag_rfc_acp_open, 109 bta_ag_rfc_close, 110 bta_ag_rfc_fail, 111 bta_ag_rfc_data, 112 bta_ag_disc_int_res, 113 bta_ag_disc_fail, 114 bta_ag_disc_acp_res, 115 bta_ag_free_db, 116 bta_ag_sco_conn_open, 117 bta_ag_sco_conn_close, 118 bta_ag_sco_listen, 119 bta_ag_sco_open, 120 bta_ag_sco_close, 121 bta_ag_sco_shutdown, 122 bta_ag_post_sco_open, 123 bta_ag_post_sco_close, 124 bta_ag_svc_conn_open, 125 bta_ag_result, 126 bta_ag_setcodec, 127 bta_ag_send_ring, 128 bta_ag_ci_sco_data, 129 bta_ag_ci_rx_data, 130 bta_ag_rcvd_slc_ready 131}; 132 133/* state table information */ 134#define BTA_AG_ACTIONS 2 /* number of actions */ 135#define BTA_AG_NEXT_STATE 2 /* position of next state */ 136#define BTA_AG_NUM_COLS 3 /* number of columns in state tables */ 137 138/* state table for init state */ 139const UINT8 bta_ag_st_init[][BTA_AG_NUM_COLS] = 140{ 141/* Event Action 1 Action 2 Next state */ 142/* API_REGISTER_EVT */ {BTA_AG_REGISTER, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 143/* API_DEREGISTER_EVT */ {BTA_AG_DEREGISTER, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 144/* API_OPEN_EVT */ {BTA_AG_START_OPEN, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 145/* API_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 146/* API_AUDIO_OPEN_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 147/* API_AUDIO_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 148/* API_RESULT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 149/* API_SETCODEC_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 150/* RFC_OPEN_EVT */ {BTA_AG_RFC_ACP_OPEN, BTA_AG_SCO_LISTEN, BTA_AG_OPEN_ST}, 151/* RFC_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 152/* RFC_SRV_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 153/* RFC_DATA_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 154/* SCO_OPEN_EVT */ {BTA_AG_SCO_CONN_OPEN, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 155/* SCO_CLOSE_EVT */ {BTA_AG_SCO_CONN_CLOSE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 156/* DISC_ACP_RES_EVT */ {BTA_AG_FREE_DB, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 157/* DISC_INT_RES_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 158/* DISC_OK_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 159/* DISC_FAIL_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 160/* CI_RX_WRITE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 161/* RING_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 162/* SVC_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 163/* CI_SCO_DATA_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 164/* CI_SLC_READY_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST} 165}; 166 167/* state table for opening state */ 168const UINT8 bta_ag_st_opening[][BTA_AG_NUM_COLS] = 169{ 170/* Event Action 1 Action 2 Next state */ 171/* API_REGISTER_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 172/* API_DEREGISTER_EVT */ {BTA_AG_RFC_DO_CLOSE, BTA_AG_START_DEREG, BTA_AG_CLOSING_ST}, 173/* API_OPEN_EVT */ {BTA_AG_OPEN_FAIL, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 174/* API_CLOSE_EVT */ {BTA_AG_RFC_DO_CLOSE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 175/* API_AUDIO_OPEN_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 176/* API_AUDIO_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 177/* API_RESULT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 178/* API_SETCODEC_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 179/* RFC_OPEN_EVT */ {BTA_AG_RFC_OPEN, BTA_AG_SCO_LISTEN, BTA_AG_OPEN_ST}, 180/* RFC_CLOSE_EVT */ {BTA_AG_RFC_FAIL, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 181/* RFC_SRV_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 182/* RFC_DATA_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 183/* SCO_OPEN_EVT */ {BTA_AG_SCO_CONN_OPEN, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 184/* SCO_CLOSE_EVT */ {BTA_AG_SCO_CONN_CLOSE, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 185/* DISC_ACP_RES_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 186/* DISC_INT_RES_EVT */ {BTA_AG_DISC_INT_RES, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 187/* DISC_OK_EVT */ {BTA_AG_RFC_DO_OPEN, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 188/* DISC_FAIL_EVT */ {BTA_AG_DISC_FAIL, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 189/* CI_RX_WRITE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 190/* RING_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 191/* SVC_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 192/* CI_SCO_DATA_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST}, 193/* CI_SLC_READY_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST} 194}; 195 196/* state table for open state */ 197const UINT8 bta_ag_st_open[][BTA_AG_NUM_COLS] = 198{ 199/* Event Action 1 Action 2 Next state */ 200/* API_REGISTER_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 201/* API_DEREGISTER_EVT */ {BTA_AG_START_CLOSE, BTA_AG_START_DEREG, BTA_AG_CLOSING_ST}, 202/* API_OPEN_EVT */ {BTA_AG_OPEN_FAIL, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 203/* API_CLOSE_EVT */ {BTA_AG_START_CLOSE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 204/* API_AUDIO_OPEN_EVT */ {BTA_AG_SCO_OPEN, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 205/* API_AUDIO_CLOSE_EVT */ {BTA_AG_SCO_CLOSE, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 206/* API_RESULT_EVT */ {BTA_AG_RESULT, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 207/* API_SETCODEC_EVT */ {BTA_AG_SETCODEC, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 208/* RFC_OPEN_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 209/* RFC_CLOSE_EVT */ {BTA_AG_RFC_CLOSE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 210/* RFC_SRV_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 211/* RFC_DATA_EVT */ {BTA_AG_RFC_DATA, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 212/* SCO_OPEN_EVT */ {BTA_AG_SCO_CONN_OPEN, BTA_AG_POST_SCO_OPEN, BTA_AG_OPEN_ST}, 213/* SCO_CLOSE_EVT */ {BTA_AG_SCO_CONN_CLOSE, BTA_AG_POST_SCO_CLOSE, BTA_AG_OPEN_ST}, 214/* DISC_ACP_RES_EVT */ {BTA_AG_DISC_ACP_RES, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 215/* DISC_INT_RES_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 216/* DISC_OK_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 217/* DISC_FAIL_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 218/* CI_RX_WRITE_EVT */ {BTA_AG_CI_RX_DATA, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 219/* RING_TOUT_EVT */ {BTA_AG_SEND_RING, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 220/* SVC_TOUT_EVT */ {BTA_AG_START_CLOSE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 221/* CI_SCO_DATA_EVT */ {BTA_AG_CI_SCO_DATA, BTA_AG_IGNORE, BTA_AG_OPEN_ST}, 222/* CI_SLC_READY_EVT */ {BTA_AG_RCVD_SLC_READY, BTA_AG_IGNORE, BTA_AG_OPEN_ST} 223}; 224 225/* state table for closing state */ 226const UINT8 bta_ag_st_closing[][BTA_AG_NUM_COLS] = 227{ 228/* Event Action 1 Action 2 Next state */ 229/* API_REGISTER_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 230/* API_DEREGISTER_EVT */ {BTA_AG_START_DEREG, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 231/* API_OPEN_EVT */ {BTA_AG_OPEN_FAIL, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 232/* API_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 233/* API_AUDIO_OPEN_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 234/* API_AUDIO_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 235/* API_RESULT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 236/* API_SETCODEC_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 237/* RFC_OPEN_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 238/* RFC_CLOSE_EVT */ {BTA_AG_RFC_CLOSE, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 239/* RFC_SRV_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 240/* RFC_DATA_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 241/* SCO_OPEN_EVT */ {BTA_AG_SCO_CONN_OPEN, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 242/* SCO_CLOSE_EVT */ {BTA_AG_SCO_CONN_CLOSE, BTA_AG_POST_SCO_CLOSE, BTA_AG_CLOSING_ST}, 243/* DISC_ACP_RES_EVT */ {BTA_AG_FREE_DB, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 244/* DISC_INT_RES_EVT */ {BTA_AG_FREE_DB, BTA_AG_IGNORE, BTA_AG_INIT_ST}, 245/* DISC_OK_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 246/* DISC_FAIL_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 247/* CI_RX_WRITE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 248/* RING_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 249/* SVC_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 250/* CI_SCO_DATA_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}, 251/* CI_SLC_READY_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST} 252}; 253 254/* type for state table */ 255typedef const UINT8 (*tBTA_AG_ST_TBL)[BTA_AG_NUM_COLS]; 256 257/* state table */ 258const tBTA_AG_ST_TBL bta_ag_st_tbl[] = 259{ 260 bta_ag_st_init, 261 bta_ag_st_opening, 262 bta_ag_st_open, 263 bta_ag_st_closing 264}; 265 266/***************************************************************************** 267** Global data 268*****************************************************************************/ 269 270/* AG control block */ 271#if BTA_DYNAMIC_MEMORY == FALSE 272tBTA_AG_CB bta_ag_cb; 273#endif 274 275/******************************************************************************* 276** 277** Function bta_ag_timer_cback 278** 279** Description AG timer callback. 280** 281** 282** Returns void 283** 284*******************************************************************************/ 285static void bta_ag_timer_cback(void *p) 286{ 287 BT_HDR *p_buf; 288 TIMER_LIST_ENT *p_tle = (TIMER_LIST_ENT *) p; 289 290 if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL) 291 { 292 p_buf->event = p_tle->event; 293 p_buf->layer_specific = bta_ag_scb_to_idx((tBTA_AG_SCB *) p_tle->param); 294 bta_sys_sendmsg(p_buf); 295 } 296} 297 298/******************************************************************************* 299** 300** Function bta_ag_scb_alloc 301** 302** Description Allocate an AG service control block. 303** 304** 305** Returns pointer to the scb, or NULL if none could be allocated. 306** 307*******************************************************************************/ 308static tBTA_AG_SCB *bta_ag_scb_alloc(void) 309{ 310 tBTA_AG_SCB *p_scb = &bta_ag_cb.scb[0]; 311 int i; 312 313 for (i = 0; i < BTA_AG_NUM_SCB; i++, p_scb++) 314 { 315 if (!p_scb->in_use) 316 { 317 /* initialize variables */ 318 p_scb->in_use = TRUE; 319 p_scb->sco_idx = BTM_INVALID_SCO_INDEX; 320#if (BTM_WBS_INCLUDED == TRUE ) 321 p_scb->codec_updated = FALSE; 322#endif 323 /* set up timers */ 324 p_scb->act_timer.param = (UINT32) p_scb; 325 p_scb->act_timer.p_cback = bta_ag_timer_cback; 326#if (BTM_WBS_INCLUDED == TRUE) 327 /* set eSCO mSBC setting to T2 as the preferred */ 328 p_scb->codec_msbc_settings = BTA_AG_SCO_MSBC_SETTINGS_T2; 329#endif 330 APPL_TRACE_DEBUG("bta_ag_scb_alloc %d", bta_ag_scb_to_idx(p_scb)); 331 break; 332 } 333 } 334 335 if (i == BTA_AG_NUM_SCB) 336 { 337 /* out of scbs */ 338 p_scb = NULL; 339 APPL_TRACE_WARNING("Out of ag scbs"); 340 } 341 return p_scb; 342} 343 344/******************************************************************************* 345** 346** Function bta_ag_scb_dealloc 347** 348** Description Deallocate a service control block. 349** 350** 351** Returns void 352** 353*******************************************************************************/ 354void bta_ag_scb_dealloc(tBTA_AG_SCB *p_scb) 355{ 356 UINT8 idx; 357 BOOLEAN allocated = FALSE; 358 359 APPL_TRACE_DEBUG("bta_ag_scb_dealloc %d", bta_ag_scb_to_idx(p_scb)); 360 361 /* stop timers */ 362 bta_sys_stop_timer(&p_scb->act_timer); 363#if (BTM_WBS_INCLUDED == TRUE) 364 bta_sys_stop_timer(&p_scb->cn_timer); 365#endif 366 bta_sys_stop_timer(&p_scb->colli_timer); 367 368 /* initialize control block */ 369 memset(p_scb, 0, sizeof(tBTA_AG_SCB)); 370 p_scb->sco_idx = BTM_INVALID_SCO_INDEX; 371 372 /* If all scbs are deallocated, callback with disable event */ 373 if (!bta_sys_is_register (BTA_ID_AG)) 374 { 375 for (idx = 0; idx < BTA_AG_NUM_SCB; idx++) 376 { 377 if (bta_ag_cb.scb[idx].in_use) 378 { 379 allocated = TRUE; 380 break; 381 } 382 } 383 384 if (!allocated) 385 { 386 (*bta_ag_cb.p_cback)(BTA_AG_DISABLE_EVT, NULL); 387 } 388 } 389 390} 391 392/******************************************************************************* 393** 394** Function bta_ag_scb_to_idx 395** 396** Description Given a pointer to an scb, return its index. 397** 398** 399** Returns Index of scb. 400** 401*******************************************************************************/ 402UINT16 bta_ag_scb_to_idx(tBTA_AG_SCB *p_scb) 403{ 404 /* use array arithmetic to determine index */ 405 return ((UINT16) (p_scb - bta_ag_cb.scb)) + 1; 406} 407 408/******************************************************************************* 409** 410** Function bta_ag_scb_by_idx 411** 412** Description Given an scb index return pointer to scb. 413** 414** 415** Returns Pointer to scb or NULL if not allocated. 416** 417*******************************************************************************/ 418tBTA_AG_SCB *bta_ag_scb_by_idx(UINT16 idx) 419{ 420 tBTA_AG_SCB *p_scb; 421 422 /* verify index */ 423 if (idx > 0 && idx <= BTA_AG_NUM_SCB) 424 { 425 p_scb = &bta_ag_cb.scb[idx - 1]; 426 if (!p_scb->in_use) 427 { 428 p_scb = NULL; 429 APPL_TRACE_WARNING("ag scb idx %d not allocated", idx); 430 } 431 } 432 else 433 { 434 p_scb = NULL; 435 APPL_TRACE_DEBUG("ag scb idx %d out of range", idx); 436 } 437 return p_scb; 438} 439 440/******************************************************************************* 441** 442** Function bta_ag_service_to_idx 443** 444** Description Given a BTA service mask convert to profile index. 445** 446** 447** Returns Profile ndex of scb. 448** 449*******************************************************************************/ 450UINT8 bta_ag_service_to_idx(tBTA_SERVICE_MASK services) 451{ 452 if (services & BTA_HFP_SERVICE_MASK) 453 { 454 return BTA_AG_HFP; 455 } 456 else 457 { 458 return BTA_AG_HSP; 459 } 460} 461 462/******************************************************************************* 463** 464** Function bta_ag_idx_by_bdaddr 465** 466** Description Find SCB associated with peer BD address. 467** 468** 469** Returns Index of SCB or zero if none found. 470** 471*******************************************************************************/ 472UINT16 bta_ag_idx_by_bdaddr(BD_ADDR peer_addr) 473{ 474 tBTA_AG_SCB *p_scb = &bta_ag_cb.scb[0]; 475 UINT16 i; 476 477 if (peer_addr != NULL) 478 { 479 for (i = 0; i < BTA_AG_NUM_SCB; i++, p_scb++) 480 { 481 if (p_scb->in_use && !bdcmp(peer_addr, p_scb->peer_addr)) 482 { 483 return (i + 1); 484 } 485 } 486 } 487 488 /* no scb found */ 489 APPL_TRACE_WARNING("No ag scb for peer addr"); 490 return 0; 491} 492 493/******************************************************************************* 494** 495** Function bta_ag_other_scb_open 496** 497** Description Check whether any other scb is in open state. 498** 499** 500** Returns TRUE if another scb is in open state, FALSE otherwise. 501** 502*******************************************************************************/ 503BOOLEAN bta_ag_other_scb_open(tBTA_AG_SCB *p_curr_scb) 504{ 505 tBTA_AG_SCB *p_scb = &bta_ag_cb.scb[0]; 506 int i; 507 508 for (i = 0; i < BTA_AG_NUM_SCB; i++, p_scb++) 509 { 510 if (p_scb->in_use && p_scb != p_curr_scb && p_scb->state == BTA_AG_OPEN_ST) 511 { 512 return TRUE; 513 } 514 } 515 516 /* no other scb found */ 517 APPL_TRACE_DEBUG("No other ag scb open"); 518 return FALSE; 519} 520 521/******************************************************************************* 522** 523** Function bta_ag_scb_open 524** 525** Description Check whether given scb is in open state. 526** 527** 528** Returns TRUE if scb is in open state, FALSE otherwise. 529** 530*******************************************************************************/ 531BOOLEAN bta_ag_scb_open(tBTA_AG_SCB *p_curr_scb) 532{ 533 if (p_curr_scb && p_curr_scb->in_use && p_curr_scb->state == BTA_AG_OPEN_ST) 534 { 535 return TRUE; 536 } 537 538 return FALSE; 539} 540 541/******************************************************************************* 542** 543** Function bta_ag_get_other_idle_scb 544** 545** Description Return other scb if it is in INIT st. 546** 547** 548** Returns Pointer to other scb if INIT st, NULL otherwise. 549** 550*******************************************************************************/ 551tBTA_AG_SCB *bta_ag_get_other_idle_scb (tBTA_AG_SCB *p_curr_scb) 552{ 553 tBTA_AG_SCB *p_scb = &bta_ag_cb.scb[0]; 554 UINT8 xx; 555 556 for (xx = 0; xx < BTA_AG_NUM_SCB; xx++, p_scb++) 557 { 558 if (p_scb->in_use && (p_scb != p_curr_scb) && (p_scb->state == BTA_AG_INIT_ST)) 559 { 560 return p_scb; 561 } 562 } 563 564 /* no other scb found */ 565 APPL_TRACE_DEBUG("bta_ag_get_other_idle_scb: No idle AG scb"); 566 return NULL; 567} 568 569/******************************************************************************* 570** 571** Function bta_ag_colli_timer_cback 572** 573** Description AG connection collision timer callback 574** 575** 576** Returns void 577** 578*******************************************************************************/ 579static void bta_ag_colli_timer_cback (TIMER_LIST_ENT *p_tle) 580{ 581 tBTA_AG_SCB *p_scb; 582 583 APPL_TRACE_DEBUG ("bta_ag_colli_timer_cback"); 584 585 if (p_tle) 586 { 587 p_scb = (tBTA_AG_SCB *)p_tle->param; 588 589 if (p_scb) 590 { 591 p_scb->colli_tmr_on = FALSE; 592 593 /* If the peer haven't opened AG connection */ 594 /* we will restart opening process. */ 595 bta_ag_resume_open (p_scb); 596 } 597 } 598} 599 600/******************************************************************************* 601** 602** Function bta_ag_collision_cback 603** 604** Description Get notified about collision. 605** 606** 607** Returns void 608** 609*******************************************************************************/ 610void bta_ag_collision_cback (tBTA_SYS_CONN_STATUS status, UINT8 id, 611 UINT8 app_id, BD_ADDR peer_addr) 612{ 613 UINT16 handle; 614 tBTA_AG_SCB *p_scb; 615 UNUSED(status); 616 UNUSED(app_id); 617 618 /* Check if we have opening scb for the peer device. */ 619 handle = bta_ag_idx_by_bdaddr (peer_addr); 620 p_scb = bta_ag_scb_by_idx (handle); 621 622 if (p_scb && (p_scb->state == BTA_AG_OPENING_ST)) 623 { 624 if (id == BTA_ID_SYS) /* ACL collision */ 625 { 626 APPL_TRACE_WARNING ("AG found collision (ACL) ..."); 627 } 628 else if (id == BTA_ID_AG) /* RFCOMM collision */ 629 { 630 APPL_TRACE_WARNING ("AG found collision (RFCOMM) ..."); 631 } 632 else 633 { 634 APPL_TRACE_WARNING ("AG found collision (\?\?\?) ..."); 635 } 636 637 p_scb->state = BTA_AG_INIT_ST; 638 639 /* Cancel SDP if it had been started. */ 640 if(p_scb->p_disc_db) 641 { 642 (void)SDP_CancelServiceSearch (p_scb->p_disc_db); 643 bta_ag_free_db(p_scb, NULL); 644 } 645 646 /* reopen registered servers */ 647 /* Collision may be detected before or after we close servers. */ 648 if (bta_ag_is_server_closed (p_scb)) 649 bta_ag_start_servers(p_scb, p_scb->reg_services); 650 651 /* Start timer to han */ 652 p_scb->colli_timer.p_cback = (TIMER_CBACK*)&bta_ag_colli_timer_cback; 653 p_scb->colli_timer.param = (INT32)p_scb; 654 bta_sys_start_timer(&p_scb->colli_timer, 0, BTA_AG_COLLISION_TIMER); 655 p_scb->colli_tmr_on = TRUE; 656 } 657 658} 659 660/******************************************************************************* 661** 662** Function bta_ag_resume_open 663** 664** Description Resume opening process. 665** 666** 667** Returns void 668** 669*******************************************************************************/ 670void bta_ag_resume_open (tBTA_AG_SCB *p_scb) 671{ 672 if (p_scb) 673 { 674 APPL_TRACE_DEBUG ("bta_ag_resume_open, Handle(%d)", bta_ag_scb_to_idx(p_scb)); 675 676 /* resume opening process. */ 677 if (p_scb->state == BTA_AG_INIT_ST) 678 { 679 p_scb->state = BTA_AG_OPENING_ST; 680 bta_ag_start_open (p_scb, NULL); 681 } 682 } 683 else 684 { 685 APPL_TRACE_ERROR ("bta_ag_resume_open, Null p_scb"); 686 } 687} 688 689/******************************************************************************* 690** 691** Function bta_ag_api_enable 692** 693** Description Handle an API enable event. 694** 695** 696** Returns void 697** 698*******************************************************************************/ 699static void bta_ag_api_enable(tBTA_AG_DATA *p_data) 700{ 701 /* initialize control block */ 702 memset(&bta_ag_cb, 0, sizeof(tBTA_AG_CB)); 703 704 /* store callback function */ 705 bta_ag_cb.p_cback = p_data->api_enable.p_cback; 706 bta_ag_cb.parse_mode = p_data->api_enable.parse_mode; 707 708 /* call init call-out */ 709 bta_ag_co_init(); 710 711 bta_sys_collision_register (BTA_ID_AG, bta_ag_collision_cback); 712 713 /* call callback with enable event */ 714 (*bta_ag_cb.p_cback)(BTA_AG_ENABLE_EVT, NULL); 715} 716 717/******************************************************************************* 718** 719** Function bta_ag_api_disable 720** 721** Description Handle an API disable event. 722** 723** 724** Returns void 725** 726*******************************************************************************/ 727static void bta_ag_api_disable(tBTA_AG_DATA *p_data) 728{ 729 /* deregister all scbs in use */ 730 tBTA_AG_SCB *p_scb = &bta_ag_cb.scb[0]; 731 BOOLEAN do_dereg = FALSE; 732 int i; 733 734 if (!bta_sys_is_register (BTA_ID_AG)) 735 { 736 APPL_TRACE_ERROR("BTA AG is already disabled, ignoring ..."); 737 return; 738 } 739 740 /* De-register with BTA system manager */ 741 bta_sys_deregister(BTA_ID_AG); 742 743 for (i = 0; i < BTA_AG_NUM_SCB; i++, p_scb++) 744 { 745 if (p_scb->in_use) 746 { 747 bta_ag_sm_execute(p_scb, BTA_AG_API_DEREGISTER_EVT, p_data); 748 do_dereg = TRUE; 749 } 750 } 751 752 if (!do_dereg) 753 { 754 /* Done, send callback evt to app */ 755 (*bta_ag_cb.p_cback)(BTA_AG_DISABLE_EVT, NULL); 756 } 757 758 bta_sys_collision_register (BTA_ID_AG, NULL); 759} 760 761/******************************************************************************* 762** 763** Function bta_ag_api_register 764** 765** Description Handle an API event registers a new service. 766** 767** 768** Returns void 769** 770*******************************************************************************/ 771static void bta_ag_api_register(tBTA_AG_DATA *p_data) 772{ 773 tBTA_AG_SCB *p_scb; 774 tBTA_AG_REGISTER reg; 775 776 /* allocate an scb */ 777 if ((p_scb = bta_ag_scb_alloc()) != NULL) 778 { 779 APPL_TRACE_DEBUG("bta_ag_api_register: p_scb 0x%08x ", p_scb); 780 bta_ag_sm_execute(p_scb, p_data->hdr.event, p_data); 781 } 782 else 783 { 784 reg.status = BTA_AG_FAIL_RESOURCES; 785 (*bta_ag_cb.p_cback)(BTA_AG_REGISTER_EVT, (tBTA_AG *) ®); 786 } 787} 788 789/******************************************************************************* 790** 791** Function bta_ag_api_result 792** 793** Description Handle an API result event. 794** 795** 796** Returns void 797** 798*******************************************************************************/ 799static void bta_ag_api_result(tBTA_AG_DATA *p_data) 800{ 801 tBTA_AG_SCB *p_scb; 802 int i; 803 804 if (p_data->hdr.layer_specific != BTA_AG_HANDLE_ALL) 805 { 806 if ((p_scb = bta_ag_scb_by_idx(p_data->hdr.layer_specific)) != NULL) 807 { 808 APPL_TRACE_DEBUG("bta_ag_api_result: p_scb 0x%08x ", p_scb); 809 bta_ag_sm_execute(p_scb, BTA_AG_API_RESULT_EVT, p_data); 810 } 811 } 812 else 813 { 814 for (i = 0, p_scb = &bta_ag_cb.scb[0]; i < BTA_AG_NUM_SCB; i++, p_scb++) 815 { 816 if (p_scb->in_use && p_scb->svc_conn) 817 { 818 APPL_TRACE_DEBUG("bta_ag_api_result p_scb 0x%08x ", p_scb); 819 bta_ag_sm_execute(p_scb, BTA_AG_API_RESULT_EVT, p_data); 820 } 821 } 822 } 823} 824 825/******************************************************************************* 826** 827** Function bta_ag_sm_execute 828** 829** Description State machine event handling function for AG 830** 831** 832** Returns void 833** 834*******************************************************************************/ 835void bta_ag_sm_execute(tBTA_AG_SCB *p_scb, UINT16 event, tBTA_AG_DATA *p_data) 836{ 837 tBTA_AG_ST_TBL state_table; 838 UINT8 action; 839 int i; 840 841#if BTA_AG_DEBUG == TRUE 842 UINT16 in_event = event; 843 UINT8 in_state = p_scb->state; 844 845 /* Ignore displaying of AT results when not connected (Ignored in state machine) */ 846 if (in_event != BTA_AG_API_RESULT_EVT || p_scb->state == BTA_AG_OPEN_ST) 847 { 848 APPL_TRACE_EVENT("AG evt (hdl 0x%04x): State %d (%s), Event 0x%04x (%s)", 849 bta_ag_scb_to_idx(p_scb), 850 p_scb->state, bta_ag_state_str(p_scb->state), 851 event, bta_ag_evt_str(event, p_data->api_result.result)); 852 } 853#else 854 APPL_TRACE_EVENT("AG evt (hdl 0x%04x): State %d, Event 0x%04x", 855 bta_ag_scb_to_idx(p_scb), p_scb->state, event); 856#endif 857 858 event &= 0x00FF; 859 if (event >= (BTA_AG_MAX_EVT & 0x00FF)) 860 { 861 APPL_TRACE_ERROR("AG evt out of range, ignoring..."); 862 return; 863 } 864 865 /* look up the state table for the current state */ 866 state_table = bta_ag_st_tbl[p_scb->state]; 867 868 /* set next state */ 869 p_scb->state = state_table[event][BTA_AG_NEXT_STATE]; 870 871 /* execute action functions */ 872 for (i = 0; i < BTA_AG_ACTIONS; i++) 873 { 874 if ((action = state_table[event][i]) != BTA_AG_IGNORE) 875 { 876 (*bta_ag_action[action])(p_scb, p_data); 877 } 878 else 879 { 880 break; 881 } 882 } 883#if BTA_AG_DEBUG == TRUE 884 if (p_scb->state != in_state) 885 { 886 APPL_TRACE_EVENT("BTA AG State Change: [%s] -> [%s] after Event [%s]", 887 bta_ag_state_str(in_state), 888 bta_ag_state_str(p_scb->state), 889 bta_ag_evt_str(in_event, p_data->api_result.result)); 890 } 891#endif 892} 893 894/******************************************************************************* 895** 896** Function bta_ag_hdl_event 897** 898** Description Data gateway main event handling function. 899** 900** 901** Returns BOOLEAN 902** 903*******************************************************************************/ 904BOOLEAN bta_ag_hdl_event(BT_HDR *p_msg) 905{ 906 tBTA_AG_SCB *p_scb; 907 908 APPL_TRACE_DEBUG("bta_ag_hdl_event: Event 0x%04x ", p_msg->event); 909 switch (p_msg->event) 910 { 911 /* handle enable event */ 912 case BTA_AG_API_ENABLE_EVT: 913 bta_ag_api_enable((tBTA_AG_DATA *) p_msg); 914 break; 915 916 /* handle disable event */ 917 case BTA_AG_API_DISABLE_EVT: 918 bta_ag_api_disable((tBTA_AG_DATA *) p_msg); 919 break; 920 921 /* handle register event */ 922 case BTA_AG_API_REGISTER_EVT: 923 bta_ag_api_register((tBTA_AG_DATA *) p_msg); 924 break; 925 926 /* handle result event */ 927 case BTA_AG_API_RESULT_EVT: 928 bta_ag_api_result((tBTA_AG_DATA *) p_msg); 929 break; 930 931 /* all others reference scb by handle */ 932 default: 933 if ((p_scb = bta_ag_scb_by_idx(p_msg->layer_specific)) != NULL) 934 { 935 APPL_TRACE_DEBUG("bta_ag_hdl_event: p_scb 0x%08x ", p_scb); 936 bta_ag_sm_execute(p_scb, p_msg->event, (tBTA_AG_DATA *) p_msg); 937 } 938 break; 939 } 940 return TRUE; 941} 942 943#if BTA_AG_DEBUG == TRUE 944static char *bta_ag_evt_str(UINT16 event, tBTA_AG_RES result) 945{ 946 switch (event) 947 { 948 case BTA_AG_API_REGISTER_EVT: 949 return "Register Request"; 950 case BTA_AG_API_DEREGISTER_EVT: 951 return "Deregister Request"; 952 case BTA_AG_API_OPEN_EVT: 953 return "Open SLC Request"; 954 case BTA_AG_API_CLOSE_EVT: 955 return "Close SLC Request"; 956 case BTA_AG_API_AUDIO_OPEN_EVT: 957 return "Open Audio Request"; 958 case BTA_AG_API_AUDIO_CLOSE_EVT: 959 return "Close Audio Request"; 960 case BTA_AG_API_RESULT_EVT: 961 switch (result) 962 { 963 case BTA_AG_SPK_RES: return ("AT Result BTA_AG_SPK_RES"); 964 case BTA_AG_MIC_RES: return ("AT Result BTA_AG_MIC_RES"); 965 case BTA_AG_INBAND_RING_RES: return ("AT Result BTA_AG_INBAND_RING_RES"); 966 case BTA_AG_CIND_RES: return ("AT Result BTA_AG_CIND_RES"); 967 case BTA_AG_BINP_RES: return ("AT Result BTA_AG_BINP_RES"); 968 case BTA_AG_IND_RES: return ("AT Result BTA_AG_IND_RES"); 969 case BTA_AG_BVRA_RES: return ("AT Result BTA_AG_BVRA_RES"); 970 case BTA_AG_CNUM_RES: return ("AT Result BTA_AG_CNUM_RES"); 971 case BTA_AG_BTRH_RES: return ("AT Result BTA_AG_BTRH_RES"); 972 case BTA_AG_CLCC_RES: return ("AT Result BTA_AG_CLCC_RES"); 973 case BTA_AG_COPS_RES: return ("AT Result BTA_AG_COPS_RES"); 974 case BTA_AG_IN_CALL_RES: return ("AT Result BTA_AG_IN_CALL_RES"); 975 case BTA_AG_IN_CALL_CONN_RES: return ("AT Result BTA_AG_IN_CALL_CONN_RES"); 976 case BTA_AG_CALL_WAIT_RES: return ("AT Result BTA_AG_CALL_WAIT_RES"); 977 case BTA_AG_OUT_CALL_ORIG_RES: return ("AT Result BTA_AG_OUT_CALL_ORIG_RES"); 978 case BTA_AG_OUT_CALL_ALERT_RES: return ("AT Result BTA_AG_OUT_CALL_ALERT_RES"); 979 case BTA_AG_OUT_CALL_CONN_RES: return ("AT Result BTA_AG_OUT_CALL_CONN_RES"); 980 case BTA_AG_CALL_CANCEL_RES: return ("AT Result BTA_AG_CALL_CANCEL_RES"); 981 case BTA_AG_END_CALL_RES: return ("AT Result BTA_AG_END_CALL_RES"); 982 case BTA_AG_UNAT_RES: return ("AT Result BTA_AG_UNAT_RES"); 983 default: return ("Unknown AG Result"); 984 } 985 case BTA_AG_API_SETCODEC_EVT: 986 return "Set Codec Request"; 987 case BTA_AG_RFC_OPEN_EVT: 988 return "RFC Opened"; 989 case BTA_AG_RFC_CLOSE_EVT: 990 return "RFC Closed"; 991 case BTA_AG_RFC_SRV_CLOSE_EVT: 992 return "RFC SRV Closed"; 993 case BTA_AG_RFC_DATA_EVT: 994 return "RFC Data"; 995 case BTA_AG_SCO_OPEN_EVT: 996 return "Audio Opened"; 997 case BTA_AG_SCO_CLOSE_EVT: 998 return "Audio Closed"; 999 case BTA_AG_DISC_ACP_RES_EVT: 1000 return "Discovery ACP Result"; 1001 case BTA_AG_DISC_INT_RES_EVT: 1002 return "Discovery INT Result"; 1003 case BTA_AG_DISC_OK_EVT: 1004 return "Discovery OK"; 1005 case BTA_AG_DISC_FAIL_EVT: 1006 return "Discovery Failed"; 1007 case BTA_AG_CI_RX_WRITE_EVT: 1008 return "CI RX Write"; 1009 case BTA_AG_RING_TOUT_EVT: 1010 return "Ring Timeout"; 1011 case BTA_AG_SVC_TOUT_EVT: 1012 return "Service Timeout"; 1013 case BTA_AG_API_ENABLE_EVT: 1014 return "Enable AG"; 1015 case BTA_AG_API_DISABLE_EVT: 1016 return "Disable AG"; 1017 case BTA_AG_CI_SCO_DATA_EVT: 1018 return "SCO data Callin"; 1019 case BTA_AG_CI_SLC_READY_EVT: 1020 return "SLC Ready Callin"; 1021 default: 1022 return "Unknown AG Event"; 1023 } 1024} 1025 1026static char *bta_ag_state_str(UINT8 state) 1027{ 1028 switch (state) 1029 { 1030 case BTA_AG_INIT_ST: 1031 return "Initial"; 1032 case BTA_AG_OPENING_ST: 1033 return "Opening"; 1034 case BTA_AG_OPEN_ST: 1035 return "Open"; 1036 case BTA_AG_CLOSING_ST: 1037 return "Closing"; 1038 default: 1039 return "Unknown AG State"; 1040 } 1041} 1042 1043#endif 1044