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 40 static char *bta_ag_evt_str(UINT16 event, tBTA_AG_RES result); 41 static char *bta_ag_state_str(UINT8 state); 42 #endif 43 44 /* state machine states */ 45 enum 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 */ 54 enum 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 */ 94 typedef void (*tBTA_AG_ACTION)(tBTA_AG_SCB *p_scb, tBTA_AG_DATA *p_data); 95 96 /* action functions */ 97 const 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 */ 139 const 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 */ 168 const 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 */ 197 const 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 */ 226 const 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 */ 255 typedef const UINT8 (*tBTA_AG_ST_TBL)[BTA_AG_NUM_COLS]; 256 257 /* state table */ 258 const 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 272 tBTA_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 *******************************************************************************/ 285 static 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 *******************************************************************************/ 308 static 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 *******************************************************************************/ 354 void 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 *******************************************************************************/ 402 UINT16 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 *******************************************************************************/ 418 tBTA_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 *******************************************************************************/ 450 UINT8 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 *******************************************************************************/ 472 UINT16 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 *******************************************************************************/ 503 BOOLEAN 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 *******************************************************************************/ 531 BOOLEAN 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 *******************************************************************************/ 551 tBTA_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 *******************************************************************************/ 579 static 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 *******************************************************************************/ 610 void 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 *******************************************************************************/ 670 void 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 *******************************************************************************/ 699 static 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 *******************************************************************************/ 727 static 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 *******************************************************************************/ 771 static 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 *******************************************************************************/ 799 static 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 *******************************************************************************/ 835 void 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 *******************************************************************************/ 904 BOOLEAN 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 944 static 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 1026 static 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
