1 /****************************************************************************** 2 * 3 * Copyright 2004-2012 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 advanced audio/video. 22 * 23 ******************************************************************************/ 24 25 #define LOG_TAG "bt_bta_av" 26 27 #include <base/logging.h> 28 #include <string.h> 29 30 #include "bt_target.h" 31 #include "osi/include/log.h" 32 #include "osi/include/osi.h" 33 #include "osi/include/properties.h" 34 35 #include "bta_av_co.h" 36 #include "bta_av_int.h" 37 #include "btif/include/btif_av_co.h" 38 #include "btif/include/btif_config.h" 39 #include "l2c_api.h" 40 #include "l2cdefs.h" 41 #include "utl.h" 42 43 #if (BTA_AR_INCLUDED == TRUE) 44 #include "bta_ar_api.h" 45 #endif 46 47 /***************************************************************************** 48 * Constants and types 49 ****************************************************************************/ 50 51 #ifndef BTA_AV_RET_TOUT 52 #define BTA_AV_RET_TOUT 4 53 #endif 54 55 #ifndef BTA_AV_SIG_TOUT 56 #define BTA_AV_SIG_TOUT 4 57 #endif 58 59 #ifndef BTA_AV_IDLE_TOUT 60 #define BTA_AV_IDLE_TOUT 10 61 #endif 62 63 /* the delay time in milliseconds to retry role switch */ 64 #ifndef BTA_AV_RS_TIME_VAL 65 #define BTA_AV_RS_TIME_VAL 1000 66 #endif 67 68 #ifndef AVRCP_VERSION_PROPERTY 69 #define AVRCP_VERSION_PROPERTY "persist.bluetooth.avrcpversion" 70 #endif 71 72 #ifndef AVRCP_1_6_STRING 73 #define AVRCP_1_6_STRING "avrcp16" 74 #endif 75 76 #ifndef AVRCP_1_5_STRING 77 #define AVRCP_1_5_STRING "avrcp15" 78 #endif 79 80 #ifndef AVRCP_1_4_STRING 81 #define AVRCP_1_4_STRING "avrcp14" 82 #endif 83 84 #ifndef AVRCP_1_3_STRING 85 #define AVRCP_1_3_STRING "avrcp13" 86 #endif 87 88 #ifndef AVRCP_DEFAULT_VERSION 89 #define AVRCP_DEFAULT_VERSION AVRCP_1_4_STRING 90 #endif 91 92 /* state machine states */ 93 enum { BTA_AV_INIT_ST, BTA_AV_OPEN_ST }; 94 95 /* state machine action enumeration list */ 96 enum { 97 BTA_AV_DISABLE, 98 BTA_AV_RC_OPENED, 99 BTA_AV_RC_REMOTE_CMD, 100 BTA_AV_RC_VENDOR_CMD, 101 BTA_AV_RC_VENDOR_RSP, 102 BTA_AV_RC_FREE_RSP, 103 BTA_AV_RC_FREE_BROWSE_MSG, 104 BTA_AV_RC_META_RSP, 105 BTA_AV_RC_MSG, 106 BTA_AV_RC_CLOSE, 107 BTA_AV_RC_BROWSE_CLOSE, 108 BTA_AV_NUM_ACTIONS 109 }; 110 111 #define BTA_AV_IGNORE BTA_AV_NUM_ACTIONS 112 113 /* type for action functions */ 114 typedef void (*tBTA_AV_ACTION)(tBTA_AV_CB* p_cb, tBTA_AV_DATA* p_data); 115 116 /* action functions */ 117 const tBTA_AV_ACTION bta_av_action[] = { 118 bta_av_disable, 119 bta_av_rc_opened, 120 bta_av_rc_remote_cmd, 121 bta_av_rc_vendor_cmd, 122 bta_av_rc_vendor_rsp, 123 bta_av_rc_free_rsp, 124 bta_av_rc_free_browse_msg, 125 bta_av_rc_meta_rsp, 126 bta_av_rc_msg, 127 bta_av_rc_close, 128 }; 129 130 /* state table information */ 131 #define BTA_AV_ACTION_COL 0 /* position of actions */ 132 #define BTA_AV_NEXT_STATE 1 /* position of next state */ 133 #define BTA_AV_NUM_COLS 2 /* number of columns in state tables */ 134 135 /* state table for init state */ 136 static const uint8_t bta_av_st_init[][BTA_AV_NUM_COLS] = { 137 /* Event Action 1 Next state */ 138 /* API_DISABLE_EVT */ {BTA_AV_DISABLE, BTA_AV_INIT_ST}, 139 /* API_REMOTE_CMD_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST}, 140 /* API_VENDOR_CMD_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST}, 141 /* API_VENDOR_RSP_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST}, 142 /* API_META_RSP_EVT */ {BTA_AV_RC_FREE_RSP, BTA_AV_INIT_ST}, 143 /* API_RC_CLOSE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST}, 144 /* AVRC_OPEN_EVT */ {BTA_AV_RC_OPENED, BTA_AV_OPEN_ST}, 145 /* AVRC_MSG_EVT */ {BTA_AV_RC_FREE_BROWSE_MSG, BTA_AV_INIT_ST}, 146 /* AVRC_NONE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST}, 147 }; 148 149 /* state table for open state */ 150 static const uint8_t bta_av_st_open[][BTA_AV_NUM_COLS] = { 151 /* Event Action 1 Next state */ 152 /* API_DISABLE_EVT */ {BTA_AV_DISABLE, BTA_AV_INIT_ST}, 153 /* API_REMOTE_CMD_EVT */ {BTA_AV_RC_REMOTE_CMD, BTA_AV_OPEN_ST}, 154 /* API_VENDOR_CMD_EVT */ {BTA_AV_RC_VENDOR_CMD, BTA_AV_OPEN_ST}, 155 /* API_VENDOR_RSP_EVT */ {BTA_AV_RC_VENDOR_RSP, BTA_AV_OPEN_ST}, 156 /* API_META_RSP_EVT */ {BTA_AV_RC_META_RSP, BTA_AV_OPEN_ST}, 157 /* API_RC_CLOSE_EVT */ {BTA_AV_RC_CLOSE, BTA_AV_OPEN_ST}, 158 /* AVRC_OPEN_EVT */ {BTA_AV_RC_OPENED, BTA_AV_OPEN_ST}, 159 /* AVRC_MSG_EVT */ {BTA_AV_RC_MSG, BTA_AV_OPEN_ST}, 160 /* AVRC_NONE_EVT */ {BTA_AV_IGNORE, BTA_AV_INIT_ST}, 161 }; 162 163 /* type for state table */ 164 typedef const uint8_t (*tBTA_AV_ST_TBL)[BTA_AV_NUM_COLS]; 165 166 /* state table */ 167 static const tBTA_AV_ST_TBL bta_av_st_tbl[] = {bta_av_st_init, bta_av_st_open}; 168 169 typedef void (*tBTA_AV_NSM_ACT)(tBTA_AV_DATA* p_data); 170 static void bta_av_api_enable(tBTA_AV_DATA* p_data); 171 static void bta_av_api_register(tBTA_AV_DATA* p_data); 172 static void bta_av_ci_data(tBTA_AV_DATA* p_data); 173 static void bta_av_rpc_conn(tBTA_AV_DATA* p_data); 174 static void bta_av_api_to_ssm(tBTA_AV_DATA* p_data); 175 176 static void bta_av_sco_chg_cback(tBTA_SYS_CONN_STATUS status, uint8_t id, 177 uint8_t app_id, const RawAddress& peer_addr); 178 static void bta_av_sys_rs_cback(tBTA_SYS_CONN_STATUS status, uint8_t id, 179 uint8_t app_id, const RawAddress& peer_addr); 180 181 /* action functions */ 182 const tBTA_AV_NSM_ACT bta_av_nsm_act[] = { 183 bta_av_api_enable, /* BTA_AV_API_ENABLE_EVT */ 184 bta_av_api_register, /* BTA_AV_API_REGISTER_EVT */ 185 bta_av_api_deregister, /* BTA_AV_API_DEREGISTER_EVT */ 186 bta_av_api_disconnect, /* BTA_AV_API_DISCONNECT_EVT */ 187 bta_av_ci_data, /* BTA_AV_CI_SRC_DATA_READY_EVT */ 188 bta_av_sig_chg, /* BTA_AV_SIG_CHG_EVT */ 189 bta_av_signalling_timer, /* BTA_AV_SIGNALLING_TIMER_EVT */ 190 bta_av_rc_disc_done, /* BTA_AV_SDP_AVRC_DISC_EVT */ 191 bta_av_rc_closed, /* BTA_AV_AVRC_CLOSE_EVT */ 192 bta_av_rc_browse_opened, /* BTA_AV_AVRC_BROWSE_OPEN_EVT */ 193 bta_av_rc_browse_closed, /* BTA_AV_AVRC_BROWSE_CLOSE_EVT */ 194 bta_av_conn_chg, /* BTA_AV_CONN_CHG_EVT */ 195 bta_av_dereg_comp, /* BTA_AV_DEREG_COMP_EVT */ 196 bta_av_rpc_conn, /* BTA_AV_AVDT_RPT_CONN_EVT */ 197 bta_av_api_to_ssm, /* BTA_AV_API_START_EVT */ 198 bta_av_api_to_ssm, /* BTA_AV_API_STOP_EVT */ 199 }; 200 201 /***************************************************************************** 202 * Global data 203 ****************************************************************************/ 204 205 /* AV control block */ 206 tBTA_AV_CB bta_av_cb; 207 208 static const char* bta_av_st_code(uint8_t state); 209 210 /******************************************************************************* 211 * 212 * Function bta_av_api_enable 213 * 214 * Description Handle an API enable event. 215 * 216 * 217 * Returns void 218 * 219 ******************************************************************************/ 220 static void bta_av_api_enable(tBTA_AV_DATA* p_data) { 221 /* initialize control block */ 222 memset(&bta_av_cb, 0, sizeof(tBTA_AV_CB)); 223 224 for (int i = 0; i < BTA_AV_NUM_RCB; i++) 225 bta_av_cb.rcb[i].handle = BTA_AV_RC_HANDLE_NONE; 226 227 bta_av_cb.rc_acp_handle = BTA_AV_RC_HANDLE_NONE; 228 229 /* 230 * TODO: The "disable" event handling is missing - there we need 231 * to alarm_free() the alarms below. 232 */ 233 bta_av_cb.link_signalling_timer = alarm_new("bta_av.link_signalling_timer"); 234 bta_av_cb.accept_signalling_timer = 235 alarm_new("bta_av.accept_signalling_timer"); 236 237 /* store parameters */ 238 bta_av_cb.p_cback = p_data->api_enable.p_cback; 239 bta_av_cb.features = p_data->api_enable.features; 240 bta_av_cb.sec_mask = p_data->api_enable.sec_mask; 241 242 tBTA_AV_ENABLE enable; 243 enable.features = bta_av_cb.features; 244 245 /* Register for SCO change event */ 246 if (!(bta_av_cb.features & BTA_AV_FEAT_NO_SCO_SSPD)) { 247 bta_sys_sco_register(bta_av_sco_chg_cback); 248 } 249 250 /* call callback with enable event */ 251 tBTA_AV bta_av_data; 252 bta_av_data.enable = enable; 253 (*bta_av_cb.p_cback)(BTA_AV_ENABLE_EVT, &bta_av_data); 254 } 255 256 /******************************************************************************* 257 * 258 * Function bta_av_addr_to_scb 259 * 260 * Description find the stream control block by the peer addr 261 * 262 * Returns void 263 * 264 ******************************************************************************/ 265 static tBTA_AV_SCB* bta_av_addr_to_scb(const RawAddress& bd_addr) { 266 tBTA_AV_SCB* p_scb = NULL; 267 int xx; 268 269 for (xx = 0; xx < BTA_AV_NUM_STRS; xx++) { 270 if (bta_av_cb.p_scb[xx]) { 271 if (bd_addr == bta_av_cb.p_scb[xx]->PeerAddress()) { 272 p_scb = bta_av_cb.p_scb[xx]; 273 break; 274 } 275 } 276 } 277 return p_scb; 278 } 279 280 int BTA_AvObtainPeerChannelIndex(const RawAddress& peer_address) { 281 // Find the entry for the peer (if exists) 282 tBTA_AV_SCB* p_scb = bta_av_addr_to_scb(peer_address); 283 if (p_scb != nullptr) { 284 return p_scb->hdi; 285 } 286 287 // Find the index for an entry that is not used 288 for (int index = 0; index < BTA_AV_NUM_STRS; index++) { 289 tBTA_AV_SCB* p_scb = bta_av_cb.p_scb[index]; 290 if (p_scb == nullptr) { 291 continue; 292 } 293 if (p_scb->PeerAddress().IsEmpty()) { 294 return p_scb->hdi; 295 } 296 } 297 298 return -1; 299 } 300 301 /******************************************************************************* 302 * 303 * Function bta_av_hndl_to_scb 304 * 305 * Description find the stream control block by the handle 306 * 307 * Returns void 308 * 309 ******************************************************************************/ 310 tBTA_AV_SCB* bta_av_hndl_to_scb(uint16_t handle) { 311 tBTA_AV_HNDL hndl = (tBTA_AV_HNDL)handle; 312 tBTA_AV_SCB* p_scb = NULL; 313 uint8_t idx = (hndl & BTA_AV_HNDL_MSK); 314 315 if (idx && (idx <= BTA_AV_NUM_STRS)) { 316 p_scb = bta_av_cb.p_scb[idx - 1]; 317 } 318 return p_scb; 319 } 320 321 /******************************************************************************* 322 * 323 * Function bta_av_alloc_scb 324 * 325 * Description allocate stream control block, 326 * register the service to stack 327 * create SDP record 328 * 329 * Returns void 330 * 331 ******************************************************************************/ 332 static tBTA_AV_SCB* bta_av_alloc_scb(tBTA_AV_CHNL chnl) { 333 if (chnl != BTA_AV_CHNL_AUDIO) { 334 APPL_TRACE_ERROR("%s: bad channel: %d", __func__, chnl); 335 return nullptr; 336 } 337 338 for (int xx = 0; xx < BTA_AV_NUM_STRS; xx++) { 339 if (bta_av_cb.p_scb[xx] != nullptr) continue; 340 // Found an empty spot 341 // TODO: After tBTA_AV_SCB is changed to a proper class, the entry 342 // here should be allocated by C++ 'new' statement. 343 tBTA_AV_SCB* p_ret = (tBTA_AV_SCB*)osi_calloc(sizeof(tBTA_AV_SCB)); 344 p_ret->rc_handle = BTA_AV_RC_HANDLE_NONE; 345 p_ret->chnl = chnl; 346 p_ret->hndl = (tBTA_AV_HNDL)((xx + 1) | chnl); 347 p_ret->hdi = xx; 348 p_ret->a2dp_list = list_new(nullptr); 349 p_ret->avrc_ct_timer = alarm_new("bta_av.avrc_ct_timer"); 350 bta_av_cb.p_scb[xx] = p_ret; 351 return p_ret; 352 } 353 354 return nullptr; 355 } 356 357 void bta_av_free_scb(tBTA_AV_SCB* p_scb) { 358 if (p_scb == nullptr) return; 359 uint8_t scb_index = p_scb->hdi; 360 CHECK(scb_index < BTA_AV_NUM_STRS); 361 362 CHECK(p_scb == bta_av_cb.p_scb[scb_index]); 363 bta_av_cb.p_scb[scb_index] = nullptr; 364 alarm_free(p_scb->avrc_ct_timer); 365 // TODO: After tBTA_AV_SCB is changed to a proper class, the entry 366 // here should be de-allocated by C++ 'delete' statement. 367 osi_free(p_scb); 368 } 369 370 void tBTA_AV_SCB::OnConnected(const RawAddress& peer_address) { 371 peer_address_ = peer_address; 372 373 if (peer_address.IsEmpty()) { 374 LOG_ERROR(LOG_TAG, "%s: Invalid peer address: %s", __func__, 375 peer_address.ToString().c_str()); 376 return; 377 } 378 379 // Read and restore the AVDTP version from local storage 380 uint16_t avdtp_version = 0; 381 size_t version_value_size = sizeof(avdtp_version); 382 if (!btif_config_get_bin(peer_address_.ToString(), AVDTP_VERSION_CONFIG_KEY, 383 (uint8_t*)&avdtp_version, &version_value_size)) { 384 LOG_WARN(LOG_TAG, "%s: Failed to read cached peer AVDTP version for %s", 385 __func__, peer_address_.ToString().c_str()); 386 } else { 387 SetAvdtpVersion(avdtp_version); 388 } 389 } 390 391 void tBTA_AV_SCB::OnDisconnected() { 392 peer_address_ = RawAddress::kEmpty; 393 SetAvdtpVersion(0); 394 } 395 396 void tBTA_AV_SCB::SetAvdtpVersion(uint16_t avdtp_version) { 397 avdtp_version_ = avdtp_version; 398 LOG_DEBUG(LOG_TAG, "%s: AVDTP version for %s set to 0x%x", __func__, 399 peer_address_.ToString().c_str(), avdtp_version_); 400 } 401 402 /******************************************************************************* 403 ******************************************************************************/ 404 void bta_av_conn_cback(UNUSED_ATTR uint8_t handle, const RawAddress& bd_addr, 405 uint8_t event, tAVDT_CTRL* p_data, uint8_t scb_index) { 406 uint16_t evt = 0; 407 tBTA_AV_SCB* p_scb = NULL; 408 409 #if (BTA_AR_INCLUDED == TRUE) 410 if (event == BTA_AR_AVDT_CONN_EVT || event == AVDT_CONNECT_IND_EVT || 411 event == AVDT_DISCONNECT_IND_EVT) 412 #else 413 if (event == AVDT_CONNECT_IND_EVT || event == AVDT_DISCONNECT_IND_EVT) 414 #endif 415 { 416 evt = BTA_AV_SIG_CHG_EVT; 417 if (event == AVDT_DISCONNECT_IND_EVT) { 418 p_scb = bta_av_addr_to_scb(bd_addr); 419 } else if (event == AVDT_CONNECT_IND_EVT) { 420 APPL_TRACE_DEBUG("%s: CONN_IND is ACP:%d", __func__, 421 p_data->hdr.err_param); 422 } 423 424 tBTA_AV_STR_MSG* p_msg = 425 (tBTA_AV_STR_MSG*)osi_malloc(sizeof(tBTA_AV_STR_MSG)); 426 p_msg->hdr.event = evt; 427 p_msg->hdr.layer_specific = event; 428 p_msg->hdr.offset = p_data->hdr.err_param; 429 p_msg->bd_addr = bd_addr; 430 p_msg->scb_index = scb_index; 431 if (p_scb) { 432 APPL_TRACE_DEBUG("%s: scb hndl x%x, role x%x", __func__, p_scb->hndl, 433 p_scb->role); 434 } 435 LOG_INFO(LOG_TAG, "%s: conn_cback bd_addr: %s", __func__, 436 bd_addr.ToString().c_str()); 437 bta_sys_sendmsg(p_msg); 438 } 439 } 440 441 /******************************************************************************* 442 * 443 * Function bta_av_a2dp_report_cback 444 * 445 * Description A2DP report callback. 446 * 447 * Returns void 448 * 449 ******************************************************************************/ 450 static void bta_av_a2dp_report_cback(UNUSED_ATTR uint8_t handle, 451 UNUSED_ATTR AVDT_REPORT_TYPE type, 452 UNUSED_ATTR tAVDT_REPORT_DATA* p_data) { 453 /* Do not need to handle report data for now. 454 * This empty function is here for conformance reasons. */ 455 } 456 457 /******************************************************************************* 458 * 459 * Function bta_av_api_register 460 * 461 * Description allocate stream control block, 462 * register the service to stack 463 * create SDP record 464 * 465 * Returns void 466 * 467 ******************************************************************************/ 468 static void bta_av_api_register(tBTA_AV_DATA* p_data) { 469 tBTA_AV_REGISTER registr; 470 tBTA_AV_SCB* p_scb; /* stream control block */ 471 AvdtpRcb reg; 472 AvdtpStreamConfig avdtp_stream_config; 473 char* p_service_name; 474 tBTA_UTL_COD cod; 475 476 avdtp_stream_config.Reset(); 477 478 registr.status = BTA_AV_FAIL_RESOURCES; 479 registr.app_id = p_data->api_reg.app_id; 480 registr.chnl = (tBTA_AV_CHNL)p_data->hdr.layer_specific; 481 482 char avrcp_version[PROPERTY_VALUE_MAX] = {0}; 483 osi_property_get(AVRCP_VERSION_PROPERTY, avrcp_version, 484 AVRCP_DEFAULT_VERSION); 485 LOG_INFO(LOG_TAG, "%s: AVRCP version used for sdp: \"%s\"", __func__, 486 avrcp_version); 487 488 uint16_t profile_initialized = p_data->api_reg.service_uuid; 489 if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) { 490 p_bta_av_cfg = &bta_avk_cfg; 491 } else if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) { 492 p_bta_av_cfg = &bta_av_cfg; 493 494 if (!strncmp(AVRCP_1_3_STRING, avrcp_version, sizeof(AVRCP_1_3_STRING))) { 495 LOG_INFO(LOG_TAG, "%s: AVRCP 1.3 capabilites used", __func__); 496 p_bta_av_cfg = &bta_av_cfg_compatibility; 497 } 498 } 499 500 APPL_TRACE_DEBUG("%s: profile: 0x%x", __func__, profile_initialized); 501 if (p_bta_av_cfg == NULL) { 502 APPL_TRACE_ERROR("%s: AV configuration is null!", __func__); 503 return; 504 } 505 506 do { 507 p_scb = bta_av_alloc_scb(registr.chnl); 508 if (p_scb == NULL) { 509 APPL_TRACE_ERROR("%s: failed to alloc SCB", __func__); 510 break; 511 } 512 513 registr.hndl = p_scb->hndl; 514 p_scb->app_id = registr.app_id; 515 516 /* initialize the stream control block */ 517 registr.status = BTA_AV_SUCCESS; 518 519 if (bta_av_cb.reg_audio == 0) { 520 /* the first channel registered. register to AVDTP */ 521 reg.ctrl_mtu = p_bta_av_cfg->sig_mtu; 522 reg.ret_tout = BTA_AV_RET_TOUT; 523 reg.sig_tout = BTA_AV_SIG_TOUT; 524 reg.idle_tout = BTA_AV_IDLE_TOUT; 525 reg.sec_mask = bta_av_cb.sec_mask; 526 reg.scb_index = p_scb->hdi; 527 #if (BTA_AR_INCLUDED == TRUE) 528 bta_ar_reg_avdt(®, bta_av_conn_cback, BTA_ID_AV); 529 #endif 530 bta_sys_role_chg_register(&bta_av_sys_rs_cback); 531 532 /* create remote control TG service if required */ 533 if (bta_av_cb.features & (BTA_AV_FEAT_RCTG)) { 534 /* register with no authorization; let AVDTP use authorization instead */ 535 #if (BTA_AR_INCLUDED == TRUE) 536 #if (BTA_AV_WITH_AVCTP_AUTHORIZATION == TRUE) 537 bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu, 538 bta_av_cb.sec_mask, BTA_ID_AV); 539 #else 540 bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu, 541 (uint8_t)(bta_av_cb.sec_mask & (~BTA_SEC_AUTHORIZE)), 542 BTA_ID_AV); 543 #endif 544 545 /* For the Audio Sink role we support additional TG to support 546 * absolute volume. 547 */ 548 uint16_t profile_version = AVRC_REV_1_0; 549 550 if (!strncmp(AVRCP_1_6_STRING, avrcp_version, 551 sizeof(AVRCP_1_6_STRING))) { 552 profile_version = AVRC_REV_1_6; 553 } else if (!strncmp(AVRCP_1_5_STRING, avrcp_version, 554 sizeof(AVRCP_1_5_STRING))) { 555 profile_version = AVRC_REV_1_5; 556 } else if (!strncmp(AVRCP_1_3_STRING, avrcp_version, 557 sizeof(AVRCP_1_3_STRING))) { 558 profile_version = AVRC_REV_1_3; 559 } else { 560 profile_version = AVRC_REV_1_4; 561 } 562 563 bta_ar_reg_avrc( 564 UUID_SERVCLASS_AV_REM_CTRL_TARGET, "AV Remote Control Target", NULL, 565 p_bta_av_cfg->avrc_tg_cat, BTA_ID_AV, 566 (bta_av_cb.features & BTA_AV_FEAT_BROWSE), profile_version); 567 #endif 568 } 569 570 /* Set the Capturing service class bit */ 571 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) 572 cod.service = BTM_COD_SERVICE_CAPTURING; 573 else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) 574 cod.service = BTM_COD_SERVICE_RENDERING; 575 utl_set_device_class(&cod, BTA_UTL_SET_COD_SERVICE_CLASS); 576 } /* if 1st channel */ 577 578 /* get stream configuration and create stream */ 579 avdtp_stream_config.cfg.num_codec = 1; 580 avdtp_stream_config.nsc_mask = AvdtpStreamConfig::AVDT_NSC_RECONFIG; 581 if (!(bta_av_cb.features & BTA_AV_FEAT_PROTECT)) { 582 avdtp_stream_config.nsc_mask |= AvdtpStreamConfig::AVDT_NSC_SECURITY; 583 } 584 APPL_TRACE_DEBUG("%s: nsc_mask: 0x%x", __func__, 585 avdtp_stream_config.nsc_mask); 586 587 if (p_data->api_reg.p_service_name[0] == 0) { 588 p_service_name = NULL; 589 } else { 590 p_service_name = p_data->api_reg.p_service_name; 591 } 592 593 p_scb->suspend_sup = true; 594 p_scb->recfg_sup = true; 595 596 avdtp_stream_config.scb_index = p_scb->hdi; 597 avdtp_stream_config.p_avdt_ctrl_cback = &bta_av_proc_stream_evt; 598 599 /* set up the audio stream control block */ 600 p_scb->p_act_tbl = (const tBTA_AV_ACT*)bta_av_a2dp_action; 601 p_scb->p_cos = &bta_av_a2dp_cos; 602 p_scb->media_type = AVDT_MEDIA_TYPE_AUDIO; 603 avdtp_stream_config.cfg.psc_mask = AVDT_PSC_TRANS; 604 avdtp_stream_config.media_type = AVDT_MEDIA_TYPE_AUDIO; 605 avdtp_stream_config.mtu = p_bta_av_cfg->audio_mtu; 606 avdtp_stream_config.flush_to = L2CAP_DEFAULT_FLUSH_TO; 607 btav_a2dp_codec_index_t codec_index_min = BTAV_A2DP_CODEC_INDEX_SOURCE_MIN; 608 btav_a2dp_codec_index_t codec_index_max = BTAV_A2DP_CODEC_INDEX_SOURCE_MAX; 609 610 if (bta_av_cb.features & BTA_AV_FEAT_REPORT) { 611 avdtp_stream_config.cfg.psc_mask |= AVDT_PSC_REPORT; 612 avdtp_stream_config.p_report_cback = bta_av_a2dp_report_cback; 613 } 614 if (bta_av_cb.features & BTA_AV_FEAT_DELAY_RPT) 615 avdtp_stream_config.cfg.psc_mask |= AVDT_PSC_DELAY_RPT; 616 617 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) { 618 avdtp_stream_config.tsep = AVDT_TSEP_SRC; 619 codec_index_min = BTAV_A2DP_CODEC_INDEX_SOURCE_MIN; 620 codec_index_max = BTAV_A2DP_CODEC_INDEX_SOURCE_MAX; 621 } else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) { 622 avdtp_stream_config.tsep = AVDT_TSEP_SNK; 623 avdtp_stream_config.p_sink_data_cback = bta_av_sink_data_cback; 624 codec_index_min = BTAV_A2DP_CODEC_INDEX_SINK_MIN; 625 codec_index_max = BTAV_A2DP_CODEC_INDEX_SINK_MAX; 626 } 627 628 /* Initialize handles to zero */ 629 for (int xx = 0; xx < BTAV_A2DP_CODEC_INDEX_MAX; xx++) { 630 p_scb->seps[xx].av_handle = 0; 631 } 632 633 /* keep the configuration in the stream control block */ 634 p_scb->cfg = avdtp_stream_config.cfg; 635 for (int i = codec_index_min; i < codec_index_max; i++) { 636 btav_a2dp_codec_index_t codec_index = 637 static_cast<btav_a2dp_codec_index_t>(i); 638 if (!(*bta_av_a2dp_cos.init)(codec_index, &avdtp_stream_config.cfg)) { 639 continue; 640 } 641 if (AVDT_CreateStream(p_scb->app_id, &p_scb->seps[codec_index].av_handle, 642 avdtp_stream_config) != AVDT_SUCCESS) { 643 continue; 644 } 645 /* Save a copy of the codec */ 646 memcpy(p_scb->seps[codec_index].codec_info, 647 avdtp_stream_config.cfg.codec_info, AVDT_CODEC_SIZE); 648 p_scb->seps[codec_index].tsep = avdtp_stream_config.tsep; 649 if (avdtp_stream_config.tsep == AVDT_TSEP_SNK) { 650 p_scb->seps[codec_index].p_app_sink_data_cback = 651 p_data->api_reg.p_app_sink_data_cback; 652 } else { 653 /* In case of A2DP SOURCE we don't need a callback to 654 * handle media packets. 655 */ 656 p_scb->seps[codec_index].p_app_sink_data_cback = NULL; 657 } 658 } 659 660 if (!bta_av_cb.reg_audio) { 661 bta_av_cb.sdp_a2dp_handle = 0; 662 bta_av_cb.sdp_a2dp_snk_handle = 0; 663 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) { 664 /* create the SDP records on the 1st audio channel */ 665 bta_av_cb.sdp_a2dp_handle = SDP_CreateRecord(); 666 A2DP_AddRecord(UUID_SERVCLASS_AUDIO_SOURCE, p_service_name, NULL, 667 A2DP_SUPF_PLAYER, bta_av_cb.sdp_a2dp_handle); 668 bta_sys_add_uuid(UUID_SERVCLASS_AUDIO_SOURCE); 669 } else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) { 670 #if (BTA_AV_SINK_INCLUDED == TRUE) 671 bta_av_cb.sdp_a2dp_snk_handle = SDP_CreateRecord(); 672 A2DP_AddRecord(UUID_SERVCLASS_AUDIO_SINK, p_service_name, NULL, 673 A2DP_SUPF_PLAYER, bta_av_cb.sdp_a2dp_snk_handle); 674 bta_sys_add_uuid(UUID_SERVCLASS_AUDIO_SINK); 675 #endif 676 } 677 /* start listening when A2DP is registered */ 678 if (bta_av_cb.features & BTA_AV_FEAT_RCTG) 679 bta_av_rc_create(&bta_av_cb, AVCT_ACP, 0, BTA_AV_NUM_LINKS + 1); 680 681 /* if the AV and AVK are both supported, it cannot support the CT role 682 */ 683 if (bta_av_cb.features & (BTA_AV_FEAT_RCCT)) { 684 /* if TG is not supported, we need to register to AVCT now */ 685 if ((bta_av_cb.features & (BTA_AV_FEAT_RCTG)) == 0) { 686 #if (BTA_AR_INCLUDED == TRUE) 687 #if (BTA_AV_WITH_AVCTP_AUTHORIZATION == TRUE) 688 bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu, 689 bta_av_cb.sec_mask, BTA_ID_AV); 690 #else 691 bta_ar_reg_avct(p_bta_av_cfg->avrc_mtu, p_bta_av_cfg->avrc_br_mtu, 692 (uint8_t)(bta_av_cb.sec_mask & (~BTA_SEC_AUTHORIZE)), 693 BTA_ID_AV); 694 #endif 695 #endif 696 bta_av_rc_create(&bta_av_cb, AVCT_ACP, 0, BTA_AV_NUM_LINKS + 1); 697 } 698 #if (BTA_AR_INCLUDED == TRUE) 699 /* create an SDP record as AVRC CT. We create 1.3 for SOURCE 700 * because we rely on feature bits being scanned by external 701 * devices more than the profile version itself. 702 * 703 * We create 1.4 for SINK since we support browsing. 704 */ 705 if (profile_initialized == UUID_SERVCLASS_AUDIO_SOURCE) { 706 bta_ar_reg_avrc(UUID_SERVCLASS_AV_REMOTE_CONTROL, NULL, NULL, 707 p_bta_av_cfg->avrc_ct_cat, BTA_ID_AV, 708 (bta_av_cb.features & BTA_AV_FEAT_BROWSE), 709 AVRC_REV_1_3); 710 } else if (profile_initialized == UUID_SERVCLASS_AUDIO_SINK) { 711 bta_ar_reg_avrc(UUID_SERVCLASS_AV_REMOTE_CONTROL, NULL, NULL, 712 p_bta_av_cfg->avrc_ct_cat, BTA_ID_AV, 713 (bta_av_cb.features & BTA_AV_FEAT_BROWSE), 714 AVRC_REV_1_6); 715 } 716 #endif 717 } 718 } 719 bta_av_cb.reg_audio |= BTA_AV_HNDL_TO_MSK(p_scb->hdi); 720 APPL_TRACE_DEBUG("%s: reg_audio: 0x%x", __func__, bta_av_cb.reg_audio); 721 } while (0); 722 723 /* call callback with register event */ 724 tBTA_AV bta_av_data; 725 bta_av_data.registr = registr; 726 (*bta_av_cb.p_cback)(BTA_AV_REGISTER_EVT, &bta_av_data); 727 } 728 729 /******************************************************************************* 730 * 731 * Function bta_av_api_deregister 732 * 733 * Description de-register a channel 734 * 735 * 736 * Returns void 737 * 738 ******************************************************************************/ 739 void bta_av_api_deregister(tBTA_AV_DATA* p_data) { 740 tBTA_AV_SCB* p_scb = bta_av_hndl_to_scb(p_data->hdr.layer_specific); 741 742 if (p_scb) { 743 p_scb->deregistering = true; 744 bta_av_ssm_execute(p_scb, BTA_AV_API_CLOSE_EVT, p_data); 745 } else { 746 bta_av_dereg_comp(p_data); 747 } 748 } 749 750 /******************************************************************************* 751 * 752 * Function bta_av_ci_data 753 * 754 * Description Forward the BTA_AV_CI_SRC_DATA_READY_EVT to stream state 755 * machine. 756 * 757 * 758 * Returns void 759 * 760 ******************************************************************************/ 761 static void bta_av_ci_data(tBTA_AV_DATA* p_data) { 762 tBTA_AV_SCB* p_scb; 763 int i; 764 uint8_t chnl = (uint8_t)p_data->hdr.layer_specific; 765 766 for (i = 0; i < BTA_AV_NUM_STRS; i++) { 767 p_scb = bta_av_cb.p_scb[i]; 768 769 if (p_scb && p_scb->chnl == chnl) { 770 bta_av_ssm_execute(p_scb, BTA_AV_SRC_DATA_READY_EVT, p_data); 771 } 772 } 773 } 774 775 /******************************************************************************* 776 * 777 * Function bta_av_rpc_conn 778 * 779 * Description report report channel open 780 * 781 * Returns void 782 * 783 ******************************************************************************/ 784 static void bta_av_rpc_conn(UNUSED_ATTR tBTA_AV_DATA* p_data) {} 785 786 /******************************************************************************* 787 * 788 * Function bta_av_api_to_ssm 789 * 790 * Description forward the API request to stream state machine 791 * 792 * 793 * Returns void 794 * 795 ******************************************************************************/ 796 static void bta_av_api_to_ssm(tBTA_AV_DATA* p_data) { 797 uint16_t event = 798 p_data->hdr.event - BTA_AV_FIRST_A2S_API_EVT + BTA_AV_FIRST_A2S_SSM_EVT; 799 tBTA_AV_HNDL handle = p_data->hdr.layer_specific; 800 tBTA_AV_SCB* p_scb = bta_av_hndl_to_scb(handle); 801 802 if (p_scb != nullptr) { 803 bta_av_ssm_execute(p_scb, event, p_data); 804 } 805 } 806 807 /******************************************************************************* 808 * 809 * Function bta_av_chk_start 810 * 811 * Description if this is audio channel, check if more than one audio 812 * channel is connected & already started. 813 * This function needs to be kept very similar to 814 * bta_av_chk_2nd_start 815 * 816 * Returns true, if need api_start 817 * 818 ******************************************************************************/ 819 bool bta_av_chk_start(tBTA_AV_SCB* p_scb) { 820 bool start = false; 821 822 if ((p_scb->chnl == BTA_AV_CHNL_AUDIO) && (bta_av_cb.audio_open_cnt >= 2) && 823 (((p_scb->role & BTA_AV_ROLE_AD_ACP) == 0) || // Outgoing connection or 824 (bta_av_cb.features & BTA_AV_FEAT_ACP_START))) { // Auto-starting option 825 // More than one audio channel is connected. 826 // If this is the 2nd stream as ACP, give INT a chance to issue the START 827 // command. 828 for (int i = 0; i < BTA_AV_NUM_STRS; i++) { 829 tBTA_AV_SCB* p_scbi = bta_av_cb.p_scb[i]; 830 if (p_scbi && p_scbi->chnl == BTA_AV_CHNL_AUDIO && p_scbi->co_started) { 831 start = true; 832 // May need to update the flush timeout of this already started stream 833 if (p_scbi->co_started != bta_av_cb.audio_open_cnt) { 834 p_scbi->co_started = bta_av_cb.audio_open_cnt; 835 L2CA_SetFlushTimeout( 836 p_scbi->PeerAddress(), 837 p_bta_av_cfg->p_audio_flush_to[p_scbi->co_started - 1]); 838 } 839 } 840 } 841 } 842 843 LOG_INFO(LOG_TAG, 844 "%s: peer %s channel:%d bta_av_cb.audio_open_cnt:%d role:0x%x " 845 "features:0x%x start:%s", 846 __func__, p_scb->PeerAddress().ToString().c_str(), p_scb->chnl, 847 bta_av_cb.audio_open_cnt, p_scb->role, bta_av_cb.features, 848 logbool(start).c_str()); 849 return start; 850 } 851 852 /******************************************************************************* 853 * 854 * Function bta_av_restore_switch 855 * 856 * Description assume that the caller of this function already makes 857 * sure that there's only one ACL connection left 858 * 859 * Returns void 860 * 861 ******************************************************************************/ 862 void bta_av_restore_switch(void) { 863 tBTA_AV_CB* p_cb = &bta_av_cb; 864 int i; 865 uint8_t mask; 866 uint8_t set_policy = (HCI_ENABLE_SNIFF_MODE | HCI_ENABLE_MASTER_SLAVE_SWITCH); 867 868 APPL_TRACE_DEBUG("%s: reg_audio: 0x%x", __func__, bta_av_cb.reg_audio); 869 for (i = 0; i < BTA_AV_NUM_STRS; i++) { 870 mask = BTA_AV_HNDL_TO_MSK(i); 871 if (p_cb->conn_audio == mask) { 872 if (p_cb->p_scb[i]) { 873 bta_sys_set_policy(BTA_ID_AV, set_policy, 874 p_cb->p_scb[i]->PeerAddress()); 875 } 876 break; 877 } 878 } 879 } 880 881 /******************************************************************************* 882 * 883 * Function bta_av_sys_rs_cback 884 * 885 * Description Receives the role change event from dm 886 * 887 * Returns (BTA_SYS_ROLE_CHANGE, new_role, hci_status, p_bda) 888 * 889 ******************************************************************************/ 890 static void bta_av_sys_rs_cback(UNUSED_ATTR tBTA_SYS_CONN_STATUS status, 891 uint8_t id, uint8_t app_id, 892 const RawAddress& peer_addr) { 893 int i; 894 tBTA_AV_SCB* p_scb = NULL; 895 uint8_t cur_role; 896 uint8_t peer_idx = 0; 897 uint8_t set_policy = (HCI_ENABLE_SNIFF_MODE | HCI_ENABLE_MASTER_SLAVE_SWITCH); 898 899 APPL_TRACE_DEBUG( 900 "%s: peer %s new_role:%d hci_status:0x%x bta_av_cb.rs_idx:%d", __func__, 901 peer_addr.ToString().c_str(), id, app_id, bta_av_cb.rs_idx); 902 903 for (i = 0; i < BTA_AV_NUM_STRS; i++) { 904 /* loop through all the SCBs to find matching peer addresses and report the 905 * role change event */ 906 /* note that more than one SCB (a2dp & vdp) maybe waiting for this event */ 907 p_scb = bta_av_cb.p_scb[i]; 908 if (p_scb && p_scb->PeerAddress() == peer_addr) { 909 tBTA_AV_ROLE_RES* p_buf = 910 (tBTA_AV_ROLE_RES*)osi_malloc(sizeof(tBTA_AV_ROLE_RES)); 911 APPL_TRACE_DEBUG( 912 "%s: peer %s found: new_role:%d, hci_status:0x%x hndl:0x%x", __func__, 913 peer_addr.ToString().c_str(), id, app_id, p_scb->hndl); 914 /* 915 if ((id != BTM_ROLE_MASTER) && (app_id != HCI_SUCCESS)) 916 { 917 bta_sys_set_policy(BTA_ID_AV, set_policy, p_scb->PeerAddress()); 918 } 919 */ 920 p_buf->hdr.event = BTA_AV_ROLE_CHANGE_EVT; 921 p_buf->hdr.layer_specific = p_scb->hndl; 922 p_buf->new_role = id; 923 p_buf->hci_status = app_id; 924 bta_sys_sendmsg(p_buf); 925 926 peer_idx = p_scb->hdi + 1; /* Handle index for the peer_addr */ 927 } 928 } 929 930 /* restore role switch policy, if role switch failed */ 931 if ((HCI_SUCCESS != app_id) && 932 (BTM_GetRole(peer_addr, &cur_role) == BTM_SUCCESS) && 933 (cur_role == BTM_ROLE_SLAVE)) { 934 bta_sys_set_policy(BTA_ID_AV, set_policy, peer_addr); 935 } 936 937 /* if BTA_AvOpen() was called for other device, which caused the role switch 938 * of the peer_addr, */ 939 /* we need to continue opening process for the BTA_AvOpen(). */ 940 if ((bta_av_cb.rs_idx != 0) && (bta_av_cb.rs_idx != peer_idx)) { 941 if ((bta_av_cb.rs_idx - 1) < BTA_AV_NUM_STRS) { 942 p_scb = bta_av_cb.p_scb[bta_av_cb.rs_idx - 1]; 943 } 944 if (p_scb && p_scb->q_tag == BTA_AV_Q_TAG_OPEN) { 945 APPL_TRACE_DEBUG("%s: peer %s rs_idx:%d, hndl:0x%x q_tag:%d", __func__, 946 p_scb->PeerAddress().ToString().c_str(), 947 bta_av_cb.rs_idx, p_scb->hndl, p_scb->q_tag); 948 949 if (HCI_SUCCESS == app_id || HCI_ERR_NO_CONNECTION == app_id) { 950 p_scb->q_info.open.switch_res = BTA_AV_RS_OK; 951 } else { 952 APPL_TRACE_ERROR( 953 "%s: peer %s (p_scb peer %s) role switch failed: new_role:%d " 954 "hci_status:0x%x", 955 __func__, peer_addr.ToString().c_str(), 956 p_scb->PeerAddress().ToString().c_str(), id, app_id); 957 p_scb->q_info.open.switch_res = BTA_AV_RS_FAIL; 958 } 959 960 /* Continue av open process */ 961 bta_av_do_disc_a2dp(p_scb, (tBTA_AV_DATA*)&(p_scb->q_info.open)); 962 } 963 964 bta_av_cb.rs_idx = 0; 965 } 966 } 967 968 /******************************************************************************* 969 * 970 * Function bta_av_sco_chg_cback 971 * 972 * Description receive & process the SCO connection up/down event from sys. 973 * call setup also triggers this callback, to suspend av before 974 * SCO activity happens, or to resume av once call ends. 975 * 976 * Returns void 977 * 978 ******************************************************************************/ 979 static void bta_av_sco_chg_cback(tBTA_SYS_CONN_STATUS status, uint8_t id, 980 UNUSED_ATTR uint8_t app_id, 981 UNUSED_ATTR const RawAddress& peer_addr) { 982 tBTA_AV_SCB* p_scb; 983 int i; 984 tBTA_AV_API_STOP stop; 985 986 APPL_TRACE_DEBUG("%s: id:%d status:%d", __func__, id, status); 987 if (id) { 988 bta_av_cb.sco_occupied = true; 989 990 /* either BTA_SYS_SCO_OPEN or BTA_SYS_SCO_CLOSE with remaining active SCO */ 991 for (i = 0; i < BTA_AV_NUM_STRS; i++) { 992 p_scb = bta_av_cb.p_scb[i]; 993 994 if (p_scb && p_scb->co_started && (!p_scb->sco_suspend)) { 995 APPL_TRACE_DEBUG("%s: suspending scb:%d", __func__, i); 996 /* scb is used and started, not suspended automatically */ 997 p_scb->sco_suspend = true; 998 stop.flush = false; 999 stop.suspend = true; 1000 stop.reconfig_stop = false; 1001 bta_av_ssm_execute(p_scb, BTA_AV_AP_STOP_EVT, (tBTA_AV_DATA*)&stop); 1002 } 1003 } 1004 } else { 1005 bta_av_cb.sco_occupied = false; 1006 1007 for (i = 0; i < BTA_AV_NUM_STRS; i++) { 1008 p_scb = bta_av_cb.p_scb[i]; 1009 1010 if (p_scb && p_scb->sco_suspend) /* scb is used and suspended for SCO */ 1011 { 1012 APPL_TRACE_DEBUG("%s: starting scb:%d", __func__, i); 1013 bta_av_ssm_execute(p_scb, BTA_AV_AP_START_EVT, NULL); 1014 } 1015 } 1016 } 1017 } 1018 1019 /******************************************************************************* 1020 * 1021 * Function bta_av_switch_if_needed 1022 * 1023 * Description This function checks if there is another existing AV 1024 * channel that is local as slave role. 1025 * If so, role switch and remove it from link policy. 1026 * 1027 * Returns true, if role switch is done 1028 * 1029 ******************************************************************************/ 1030 bool bta_av_switch_if_needed(tBTA_AV_SCB* p_scb) { 1031 // TODO: A workaround for devices that are connected first, become 1032 // Master, and block follow-up role changes - b/72122792 . 1033 return false; 1034 #if 0 1035 uint8_t role; 1036 bool needed = false; 1037 tBTA_AV_SCB* p_scbi; 1038 int i; 1039 uint8_t mask; 1040 1041 for (i = 0; i < BTA_AV_NUM_STRS; i++) { 1042 mask = BTA_AV_HNDL_TO_MSK(i); 1043 p_scbi = bta_av_cb.p_scb[i]; 1044 if (p_scbi && (p_scb->hdi != i) && /* not the original channel */ 1045 ((bta_av_cb.conn_audio & mask))) /* connected audio */ 1046 { 1047 BTM_GetRole(p_scbi->PeerAddress(), &role); 1048 /* this channel is open - clear the role switch link policy for this link 1049 */ 1050 if (BTM_ROLE_MASTER != role) { 1051 if (bta_av_cb.features & BTA_AV_FEAT_MASTER) 1052 bta_sys_clear_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH, 1053 p_scbi->PeerAddress()); 1054 if (BTM_CMD_STARTED != 1055 BTM_SwitchRole(p_scbi->PeerAddress(), BTM_ROLE_MASTER, NULL)) { 1056 /* can not switch role on SCBI 1057 * start the timer on SCB - because this function is ONLY called when 1058 * SCB gets API_OPEN */ 1059 bta_sys_start_timer(p_scb->avrc_ct_timer, BTA_AV_RS_TIME_VAL, 1060 BTA_AV_AVRC_TIMER_EVT, p_scb->hndl); 1061 } 1062 needed = true; 1063 /* mark the original channel as waiting for RS result */ 1064 bta_av_cb.rs_idx = p_scb->hdi + 1; 1065 break; 1066 } 1067 } 1068 } 1069 return needed; 1070 #endif 1071 } 1072 1073 /******************************************************************************* 1074 * 1075 * Function bta_av_link_role_ok 1076 * 1077 * Description This function checks if the SCB has existing ACL connection 1078 * If so, check if the link role fits the requirements. 1079 * 1080 * Returns true, if role is ok 1081 * 1082 ******************************************************************************/ 1083 bool bta_av_link_role_ok(tBTA_AV_SCB* p_scb, uint8_t bits) { 1084 uint8_t role; 1085 bool is_ok = true; 1086 1087 if (BTM_GetRole(p_scb->PeerAddress(), &role) == BTM_SUCCESS) { 1088 LOG_INFO( 1089 LOG_TAG, 1090 "%s: peer %s hndl:0x%x role:%d conn_audio:0x%x bits:%d features:0x%x", 1091 __func__, p_scb->PeerAddress().ToString().c_str(), p_scb->hndl, role, 1092 bta_av_cb.conn_audio, bits, bta_av_cb.features); 1093 if (BTM_ROLE_MASTER != role && 1094 (A2DP_BitsSet(bta_av_cb.conn_audio) > bits || 1095 (bta_av_cb.features & BTA_AV_FEAT_MASTER))) { 1096 if (bta_av_cb.features & BTA_AV_FEAT_MASTER) 1097 bta_sys_clear_policy(BTA_ID_AV, HCI_ENABLE_MASTER_SLAVE_SWITCH, 1098 p_scb->PeerAddress()); 1099 1100 tBTM_STATUS status = 1101 BTM_SwitchRole(p_scb->PeerAddress(), BTM_ROLE_MASTER, NULL); 1102 if (status != BTM_CMD_STARTED) { 1103 /* can not switch role on SCB - start the timer on SCB */ 1104 LOG_ERROR(LOG_TAG, 1105 "%s: peer %s BTM_SwitchRole(BTM_ROLE_MASTER) error: %d", 1106 __func__, p_scb->PeerAddress().ToString().c_str(), status); 1107 } 1108 is_ok = false; 1109 p_scb->wait |= BTA_AV_WAIT_ROLE_SW_RES_START; 1110 } 1111 } 1112 1113 return is_ok; 1114 } 1115 1116 /******************************************************************************* 1117 * 1118 * Function bta_av_dup_audio_buf 1119 * 1120 * Description dup the audio data to the q_info.a2dp of other audio 1121 * channels 1122 * 1123 * Returns void 1124 * 1125 ******************************************************************************/ 1126 void bta_av_dup_audio_buf(tBTA_AV_SCB* p_scb, BT_HDR* p_buf) { 1127 /* Test whether there is more than one audio channel connected */ 1128 if ((p_buf == NULL) || (bta_av_cb.audio_open_cnt < 2)) return; 1129 1130 uint16_t copy_size = BT_HDR_SIZE + p_buf->len + p_buf->offset; 1131 for (int i = 0; i < BTA_AV_NUM_STRS; i++) { 1132 tBTA_AV_SCB* p_scbi = bta_av_cb.p_scb[i]; 1133 1134 if (i == p_scb->hdi) continue; /* Ignore the original channel */ 1135 if ((p_scbi == NULL) || !p_scbi->co_started) 1136 continue; /* Ignore if SCB is not used or started */ 1137 if (!(bta_av_cb.conn_audio & BTA_AV_HNDL_TO_MSK(i))) 1138 continue; /* Audio is not connected */ 1139 1140 /* Enqueue the data */ 1141 BT_HDR* p_new = (BT_HDR*)osi_malloc(copy_size); 1142 memcpy(p_new, p_buf, copy_size); 1143 list_append(p_scbi->a2dp_list, p_new); 1144 1145 if (list_length(p_scbi->a2dp_list) > p_bta_av_cfg->audio_mqs) { 1146 // Drop the oldest packet 1147 bta_av_co_audio_drop(p_scbi->hndl, p_scbi->PeerAddress()); 1148 BT_HDR* p_buf_drop = static_cast<BT_HDR*>(list_front(p_scbi->a2dp_list)); 1149 list_remove(p_scbi->a2dp_list, p_buf_drop); 1150 osi_free(p_buf_drop); 1151 } 1152 } 1153 } 1154 1155 /******************************************************************************* 1156 * 1157 * Function bta_av_sm_execute 1158 * 1159 * Description State machine event handling function for AV 1160 * 1161 * 1162 * Returns void 1163 * 1164 ******************************************************************************/ 1165 void bta_av_sm_execute(tBTA_AV_CB* p_cb, uint16_t event, tBTA_AV_DATA* p_data) { 1166 tBTA_AV_ST_TBL state_table; 1167 uint8_t action; 1168 1169 APPL_TRACE_EVENT("%s: AV event=0x%x(%s) state=%d(%s)", __func__, event, 1170 bta_av_evt_code(event), p_cb->state, 1171 bta_av_st_code(p_cb->state)); 1172 1173 /* look up the state table for the current state */ 1174 state_table = bta_av_st_tbl[p_cb->state]; 1175 1176 event &= 0x00FF; 1177 1178 /* set next state */ 1179 p_cb->state = state_table[event][BTA_AV_NEXT_STATE]; 1180 APPL_TRACE_EVENT("%s: next state=%d event offset:%d", __func__, p_cb->state, 1181 event); 1182 1183 /* execute action functions */ 1184 action = state_table[event][BTA_AV_ACTION_COL]; 1185 if (action != BTA_AV_IGNORE) { 1186 APPL_TRACE_EVENT("%s: action executed %d", __func__, action); 1187 (*bta_av_action[action])(p_cb, p_data); 1188 } 1189 } 1190 1191 /******************************************************************************* 1192 * 1193 * Function bta_av_hdl_event 1194 * 1195 * Description Advanced audio/video main event handling function. 1196 * 1197 * 1198 * Returns bool 1199 * 1200 ******************************************************************************/ 1201 bool bta_av_hdl_event(BT_HDR* p_msg) { 1202 if (p_msg->event > BTA_AV_LAST_EVT) { 1203 return true; /* to free p_msg */ 1204 } 1205 if (p_msg->event >= BTA_AV_FIRST_NSM_EVT) { 1206 APPL_TRACE_VERBOSE("%s: AV nsm event=0x%x(%s)", __func__, p_msg->event, 1207 bta_av_evt_code(p_msg->event)); 1208 /* non state machine events */ 1209 (*bta_av_nsm_act[p_msg->event - BTA_AV_FIRST_NSM_EVT])( 1210 (tBTA_AV_DATA*)p_msg); 1211 } else if (p_msg->event >= BTA_AV_FIRST_SM_EVT && 1212 p_msg->event <= BTA_AV_LAST_SM_EVT) { 1213 APPL_TRACE_VERBOSE("%s: AV sm event=0x%x(%s)", __func__, p_msg->event, 1214 bta_av_evt_code(p_msg->event)); 1215 /* state machine events */ 1216 bta_av_sm_execute(&bta_av_cb, p_msg->event, (tBTA_AV_DATA*)p_msg); 1217 } else { 1218 APPL_TRACE_VERBOSE("%s: handle=0x%x", __func__, p_msg->layer_specific); 1219 /* stream state machine events */ 1220 bta_av_ssm_execute(bta_av_hndl_to_scb(p_msg->layer_specific), p_msg->event, 1221 (tBTA_AV_DATA*)p_msg); 1222 } 1223 return true; 1224 } 1225 1226 /***************************************************************************** 1227 * Debug Functions 1228 ****************************************************************************/ 1229 /******************************************************************************* 1230 * 1231 * Function bta_av_st_code 1232 * 1233 * Description 1234 * 1235 * Returns char * 1236 * 1237 ******************************************************************************/ 1238 static const char* bta_av_st_code(uint8_t state) { 1239 switch (state) { 1240 case BTA_AV_INIT_ST: 1241 return "INIT"; 1242 case BTA_AV_OPEN_ST: 1243 return "OPEN"; 1244 default: 1245 return "unknown"; 1246 } 1247 } 1248 /******************************************************************************* 1249 * 1250 * Function bta_av_evt_code 1251 * 1252 * Description 1253 * 1254 * Returns char * 1255 * 1256 ******************************************************************************/ 1257 const char* bta_av_evt_code(uint16_t evt_code) { 1258 switch (evt_code) { 1259 case BTA_AV_API_DISABLE_EVT: 1260 return "API_DISABLE"; 1261 case BTA_AV_API_REMOTE_CMD_EVT: 1262 return "API_REMOTE_CMD"; 1263 case BTA_AV_API_VENDOR_CMD_EVT: 1264 return "API_VENDOR_CMD"; 1265 case BTA_AV_API_VENDOR_RSP_EVT: 1266 return "API_VENDOR_RSP"; 1267 case BTA_AV_API_META_RSP_EVT: 1268 return "API_META_RSP_EVT"; 1269 case BTA_AV_API_RC_CLOSE_EVT: 1270 return "API_RC_CLOSE"; 1271 case BTA_AV_AVRC_OPEN_EVT: 1272 return "AVRC_OPEN"; 1273 case BTA_AV_AVRC_MSG_EVT: 1274 return "AVRC_MSG"; 1275 case BTA_AV_AVRC_NONE_EVT: 1276 return "AVRC_NONE"; 1277 1278 case BTA_AV_API_OPEN_EVT: 1279 return "API_OPEN"; 1280 case BTA_AV_API_CLOSE_EVT: 1281 return "API_CLOSE"; 1282 case BTA_AV_AP_START_EVT: 1283 return "AP_START"; 1284 case BTA_AV_AP_STOP_EVT: 1285 return "AP_STOP"; 1286 case BTA_AV_API_RECONFIG_EVT: 1287 return "API_RECONFIG"; 1288 case BTA_AV_API_PROTECT_REQ_EVT: 1289 return "API_PROTECT_REQ"; 1290 case BTA_AV_API_PROTECT_RSP_EVT: 1291 return "API_PROTECT_RSP"; 1292 case BTA_AV_API_RC_OPEN_EVT: 1293 return "API_RC_OPEN"; 1294 case BTA_AV_SRC_DATA_READY_EVT: 1295 return "SRC_DATA_READY"; 1296 case BTA_AV_CI_SETCONFIG_OK_EVT: 1297 return "CI_SETCONFIG_OK"; 1298 case BTA_AV_CI_SETCONFIG_FAIL_EVT: 1299 return "CI_SETCONFIG_FAIL"; 1300 case BTA_AV_SDP_DISC_OK_EVT: 1301 return "SDP_DISC_OK"; 1302 case BTA_AV_SDP_DISC_FAIL_EVT: 1303 return "SDP_DISC_FAIL"; 1304 case BTA_AV_STR_DISC_OK_EVT: 1305 return "STR_DISC_OK"; 1306 case BTA_AV_STR_DISC_FAIL_EVT: 1307 return "STR_DISC_FAIL"; 1308 case BTA_AV_STR_GETCAP_OK_EVT: 1309 return "STR_GETCAP_OK"; 1310 case BTA_AV_STR_GETCAP_FAIL_EVT: 1311 return "STR_GETCAP_FAIL"; 1312 case BTA_AV_STR_OPEN_OK_EVT: 1313 return "STR_OPEN_OK"; 1314 case BTA_AV_STR_OPEN_FAIL_EVT: 1315 return "STR_OPEN_FAIL"; 1316 case BTA_AV_STR_START_OK_EVT: 1317 return "STR_START_OK"; 1318 case BTA_AV_STR_START_FAIL_EVT: 1319 return "STR_START_FAIL"; 1320 case BTA_AV_STR_CLOSE_EVT: 1321 return "STR_CLOSE"; 1322 case BTA_AV_STR_CONFIG_IND_EVT: 1323 return "STR_CONFIG_IND"; 1324 case BTA_AV_STR_SECURITY_IND_EVT: 1325 return "STR_SECURITY_IND"; 1326 case BTA_AV_STR_SECURITY_CFM_EVT: 1327 return "STR_SECURITY_CFM"; 1328 case BTA_AV_STR_WRITE_CFM_EVT: 1329 return "STR_WRITE_CFM"; 1330 case BTA_AV_STR_SUSPEND_CFM_EVT: 1331 return "STR_SUSPEND_CFM"; 1332 case BTA_AV_STR_RECONFIG_CFM_EVT: 1333 return "STR_RECONFIG_CFM"; 1334 case BTA_AV_AVRC_TIMER_EVT: 1335 return "AVRC_TIMER"; 1336 case BTA_AV_AVDT_CONNECT_EVT: 1337 return "AVDT_CONNECT"; 1338 case BTA_AV_AVDT_DISCONNECT_EVT: 1339 return "AVDT_DISCONNECT"; 1340 case BTA_AV_ROLE_CHANGE_EVT: 1341 return "ROLE_CHANGE"; 1342 case BTA_AV_AVDT_DELAY_RPT_EVT: 1343 return "AVDT_DELAY_RPT"; 1344 case BTA_AV_ACP_CONNECT_EVT: 1345 return "ACP_CONNECT"; 1346 1347 case BTA_AV_API_ENABLE_EVT: 1348 return "API_ENABLE"; 1349 case BTA_AV_API_REGISTER_EVT: 1350 return "API_REG"; 1351 case BTA_AV_API_DEREGISTER_EVT: 1352 return "API_DEREG"; 1353 case BTA_AV_API_DISCONNECT_EVT: 1354 return "API_DISCNT"; 1355 case BTA_AV_CI_SRC_DATA_READY_EVT: 1356 return "CI_DATA_READY"; 1357 case BTA_AV_SIG_CHG_EVT: 1358 return "SIG_CHG"; 1359 case BTA_AV_SIGNALLING_TIMER_EVT: 1360 return "SIGNALLING_TIMER"; 1361 case BTA_AV_SDP_AVRC_DISC_EVT: 1362 return "SDP_AVRC_DISC"; 1363 case BTA_AV_AVRC_CLOSE_EVT: 1364 return "AVRC_CLOSE"; 1365 case BTA_AV_AVRC_BROWSE_OPEN_EVT: 1366 return "AVRC_BROWSE_OPEN"; 1367 case BTA_AV_AVRC_BROWSE_CLOSE_EVT: 1368 return "AVRC_BROWSE_CLOSE"; 1369 case BTA_AV_CONN_CHG_EVT: 1370 return "CONN_CHG"; 1371 case BTA_AV_DEREG_COMP_EVT: 1372 return "DEREG_COMP"; 1373 case BTA_AV_AVDT_RPT_CONN_EVT: 1374 return "RPT_CONN"; 1375 case BTA_AV_API_START_EVT: 1376 return "API_START"; 1377 case BTA_AV_API_STOP_EVT: 1378 return "API_STOP"; 1379 default: 1380 return "unknown"; 1381 } 1382 } 1383 1384 void bta_debug_av_dump(int fd) { 1385 dprintf(fd, "\nBTA AV State:\n"); 1386 dprintf(fd, " State Machine State: %s\n", bta_av_st_code(bta_av_cb.state)); 1387 dprintf(fd, " Link signalling timer: %s\n", 1388 alarm_is_scheduled(bta_av_cb.link_signalling_timer) 1389 ? "Scheduled" 1390 : "Not scheduled"); 1391 dprintf(fd, " Accept signalling timer: %s\n", 1392 alarm_is_scheduled(bta_av_cb.accept_signalling_timer) 1393 ? "Scheduled" 1394 : "Not scheduled"); 1395 dprintf(fd, " SDP A2DP source handle: %d\n", bta_av_cb.sdp_a2dp_handle); 1396 dprintf(fd, " SDP A2DP sink handle: %d\n", bta_av_cb.sdp_a2dp_snk_handle); 1397 dprintf(fd, " Features: 0x%x\n", bta_av_cb.features); 1398 dprintf(fd, " Security mask: 0x%x\n", bta_av_cb.sec_mask); 1399 dprintf(fd, " SDP handle: %d\n", bta_av_cb.handle); 1400 dprintf(fd, " Disabling: %s\n", bta_av_cb.disabling ? "true" : "false"); 1401 dprintf(fd, " SCO occupied: %s\n", 1402 bta_av_cb.sco_occupied ? "true" : "false"); 1403 dprintf(fd, " Connected audio channels: %d\n", bta_av_cb.audio_open_cnt); 1404 dprintf(fd, " Connected audio channels mask: 0x%x\n", bta_av_cb.conn_audio); 1405 dprintf(fd, " Streaming audio channels mask: 0x%x\n", 1406 bta_av_cb.audio_streams); 1407 dprintf(fd, " Registered audio channels mask: 0x%x\n", bta_av_cb.reg_audio); 1408 dprintf(fd, " Connected LCBs mask: 0x%x\n", bta_av_cb.conn_lcb); 1409 1410 for (size_t i = 0; i < sizeof(bta_av_cb.lcb) / sizeof(bta_av_cb.lcb[0]); 1411 i++) { 1412 const tBTA_AV_LCB& lcb = bta_av_cb.lcb[i]; 1413 dprintf(fd, "\n Link control block: %zu peer: %s\n", i, 1414 lcb.addr.ToString().c_str()); 1415 dprintf(fd, " Connected stream handle mask: 0x%x\n", lcb.conn_msk); 1416 dprintf(fd, " Index(+1) to LCB: %d\n", lcb.lidx); 1417 } 1418 for (size_t i = 0; i < BTA_AV_NUM_STRS; i++) { 1419 const tBTA_AV_SCB* p_scb = bta_av_cb.p_scb[i]; 1420 if (p_scb == nullptr) { 1421 continue; 1422 } 1423 dprintf(fd, "\n BTA ID: %zu peer: %s\n", i, 1424 p_scb->PeerAddress().ToString().c_str()); 1425 dprintf(fd, " SDP discovery started: %s\n", 1426 p_scb->sdp_discovery_started ? "true" : "false"); 1427 for (size_t j = 0; j < BTAV_A2DP_CODEC_INDEX_MAX; j++) { 1428 const tBTA_AV_SEP& sep = p_scb->seps[j]; 1429 dprintf(fd, " SEP ID: %zu\n", j); 1430 dprintf(fd, " SEP AVDTP handle: %d\n", sep.av_handle); 1431 dprintf(fd, " Local SEP type: %d\n", sep.tsep); 1432 dprintf(fd, " Codec: %s\n", A2DP_CodecName(sep.codec_info)); 1433 } 1434 dprintf(fd, " BTA info tag: %d\n", p_scb->q_tag); 1435 dprintf(fd, " API Open peer: %s\n", 1436 p_scb->q_info.open.bd_addr.ToString().c_str()); 1437 dprintf(fd, " Use AVRCP: %s\n", 1438 p_scb->q_info.open.use_rc ? "true" : "false"); 1439 dprintf(fd, " Security mask: 0x%x\n", p_scb->q_info.open.sec_mask); 1440 dprintf(fd, " Switch result: %d\n", p_scb->q_info.open.switch_res); 1441 dprintf(fd, " Initiator UUID: 0x%x\n", p_scb->q_info.open.uuid); 1442 dprintf(fd, " Saved API Open peer: %s\n", 1443 p_scb->open_api.bd_addr.ToString().c_str()); 1444 dprintf(fd, " Use AVRCP: %s\n", 1445 p_scb->open_api.use_rc ? "true" : "false"); 1446 dprintf(fd, " Security mask: 0x%x\n", p_scb->open_api.sec_mask); 1447 dprintf(fd, " Switch result: %d\n", p_scb->open_api.switch_res); 1448 dprintf(fd, " Initiator UUID: 0x%x\n", p_scb->open_api.uuid); 1449 // TODO: Print p_scb->sep_info[], cfg, avrc_ct_timer, current_codec ? 1450 dprintf(fd, " L2CAP Channel ID: %d\n", p_scb->l2c_cid); 1451 dprintf(fd, " Stream MTU: %d\n", p_scb->stream_mtu); 1452 dprintf(fd, " AVDTP version: 0x%x\n", p_scb->AvdtpVersion()); 1453 dprintf(fd, " Security mask: 0x%x\n", p_scb->sec_mask); 1454 dprintf(fd, " Media type: %d\n", p_scb->media_type); 1455 dprintf(fd, " Congested: %s\n", p_scb->cong ? "true" : "false"); 1456 dprintf(fd, " Open status: %d\n", p_scb->open_status); 1457 dprintf(fd, " Channel: %d\n", p_scb->chnl); 1458 dprintf(fd, " BTA handle: 0x%x\n", p_scb->hndl); 1459 dprintf(fd, " Protocol service capabilities mask: 0x%x\n", 1460 p_scb->cur_psc_mask); 1461 dprintf(fd, " AVDTP handle: %d\n", p_scb->avdt_handle); 1462 dprintf(fd, " Stream control block index: %d\n", p_scb->hdi); 1463 dprintf(fd, " State machine state: %s(%d)\n", 1464 bta_av_sst_code(p_scb->state), p_scb->state); 1465 dprintf(fd, " AVDTP label: 0x%x\n", p_scb->avdt_label); 1466 dprintf(fd, " Application ID: %d\n", p_scb->app_id); 1467 dprintf(fd, " Role: 0x%x\n", p_scb->role); 1468 dprintf(fd, " Queued L2CAP buffers: %d\n", p_scb->l2c_bufs); 1469 dprintf(fd, " AVRCP allowed: %s\n", p_scb->use_rc ? "true" : "false"); 1470 dprintf(fd, " Stream started: %s\n", p_scb->started ? "true" : "false"); 1471 dprintf(fd, " Stream call-out started: %d\n", p_scb->co_started); 1472 dprintf(fd, " AVDTP Reconfig supported: %s\n", 1473 p_scb->recfg_sup ? "true" : "false"); 1474 dprintf(fd, " AVDTP Suspend supported: %s\n", 1475 p_scb->suspend_sup ? "true" : "false"); 1476 dprintf(fd, " Deregistering: %s\n", 1477 p_scb->deregistering ? "true" : "false"); 1478 dprintf(fd, " SCO automatic Suspend: %s\n", 1479 p_scb->sco_suspend ? "true" : "false"); 1480 dprintf(fd, " Incoming/outgoing connection collusion mask: 0x%x\n", 1481 p_scb->coll_mask); 1482 dprintf(fd, " Wait mask: 0x%x\n", p_scb->wait); 1483 dprintf(fd, " Don't use RTP header: %s\n", 1484 p_scb->no_rtp_header ? "true" : "false"); 1485 dprintf(fd, " Intended UUID of Initiator to connect to: 0x%x\n", 1486 p_scb->uuid_int); 1487 } 1488 } 1489
