1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hfp_hf.c" 39 40 // ***************************************************************************** 41 // 42 // HFP Hands-Free (HF) unit 43 // 44 // ***************************************************************************** 45 46 #include "btstack_config.h" 47 48 #include <stdint.h> 49 #include <string.h> 50 51 #include "bluetooth_sdp.h" 52 #include "btstack_debug.h" 53 #include "btstack_event.h" 54 #include "btstack_memory.h" 55 #include "btstack_run_loop.h" 56 #include "classic/core.h" 57 #include "classic/hfp.h" 58 #include "classic/hfp_hf.h" 59 #include "classic/sdp_client_rfcomm.h" 60 #include "classic/sdp_server.h" 61 #include "classic/sdp_util.h" 62 #include "hci.h" 63 #include "hci_cmd.h" 64 #include "hci_dump.h" 65 #include "l2cap.h" 66 67 // const 68 static const char default_hfp_hf_service_name[] = "Hands-Free unit"; 69 70 // globals 71 static btstack_packet_callback_registration_t hfp_hf_hci_event_callback_registration; 72 73 static uint16_t hfp_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 74 static uint8_t hfp_codecs_nr; 75 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 76 77 static uint8_t hfp_indicators_nr; 78 static uint8_t hfp_indicators[HFP_MAX_NUM_INDICATORS]; 79 static uint32_t hfp_indicators_value[HFP_MAX_NUM_INDICATORS]; 80 81 static uint8_t hfp_hf_speaker_gain; 82 static uint8_t hfp_hf_microphone_gain; 83 84 static btstack_packet_handler_t hfp_hf_callback; 85 86 static hfp_call_status_t hfp_call_status; 87 static hfp_callsetup_status_t hfp_callsetup_status; 88 static hfp_callheld_status_t hfp_callheld_status; 89 90 static char phone_number[25]; 91 92 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 93 int hf = get_bit(hfp_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 94 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 95 return hf && ag; 96 } 97 98 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 99 int hf = get_bit(hfp_supported_features, HFP_HFSF_THREE_WAY_CALLING); 100 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_THREE_WAY_CALLING); 101 return hf && ag; 102 } 103 104 105 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 106 int hf = get_bit(hfp_supported_features, HFP_HFSF_HF_INDICATORS); 107 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_HF_INDICATORS); 108 return hf && ag; 109 } 110 111 112 static hfp_connection_t * get_hfp_hf_connection_context_for_acl_handle(uint16_t handle){ 113 btstack_linked_list_iterator_t it; 114 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 115 while (btstack_linked_list_iterator_has_next(&it)){ 116 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 117 if (hfp_connection->acl_handle != handle) continue; 118 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 119 return hfp_connection; 120 } 121 return NULL; 122 } 123 124 /* emit functinos */ 125 126 static void hfp_hf_emit_subscriber_information(btstack_packet_handler_t callback, uint8_t event_subtype, uint8_t status, uint8_t bnip_type, const char * bnip_number){ 127 if (!callback) return; 128 uint8_t event[31]; 129 event[0] = HCI_EVENT_HFP_META; 130 event[1] = sizeof(event) - 2; 131 event[2] = event_subtype; 132 event[3] = status; 133 event[4] = bnip_type; 134 uint16_t size = btstack_min(strlen(bnip_number), sizeof(event) - 6); 135 strncpy((char*)&event[5], bnip_number, size); 136 event[5 + size] = 0; 137 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 138 } 139 140 static void hfp_hf_emit_type_and_number(btstack_packet_handler_t callback, uint8_t event_subtype, uint8_t bnip_type, const char * bnip_number){ 141 if (!callback) return; 142 uint8_t event[30]; 143 event[0] = HCI_EVENT_HFP_META; 144 event[1] = sizeof(event) - 2; 145 event[2] = event_subtype; 146 event[3] = bnip_type; 147 uint16_t size = btstack_min(strlen(bnip_number), sizeof(event) - 5); 148 strncpy((char*)&event[4], bnip_number, size); 149 event[4 + size] = 0; 150 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 151 } 152 153 static void hfp_hf_emit_enhanced_call_status(btstack_packet_handler_t callback, hfp_connection_t * connection){ 154 if (!callback) return; 155 uint8_t event[36]; 156 int pos = 0; 157 event[pos++] = HCI_EVENT_HFP_META; 158 event[pos++] = sizeof(event) - 2; 159 event[pos++] = HFP_SUBEVENT_ENHANCED_CALL_STATUS; 160 event[pos++] = connection->clcc_idx; 161 event[pos++] = connection->clcc_dir; 162 event[pos++] = connection->clcc_status; 163 event[pos++] = connection->clcc_mode; 164 event[pos++] = connection->clcc_mpty; 165 event[pos++] = connection->bnip_type; 166 uint16_t size = btstack_min(strlen(connection->bnip_number), sizeof(event) - pos); 167 strncpy((char*)&event[pos], connection->bnip_number, size); 168 pos += size; 169 event[pos++] = 0; 170 (*callback)(HCI_EVENT_PACKET, 0, event, pos); 171 } 172 173 174 static void hfp_emit_ag_indicator_event(btstack_packet_handler_t callback, hfp_ag_indicator_t indicator){ 175 if (!callback) return; 176 uint8_t event[10+HFP_MAX_INDICATOR_DESC_SIZE+1]; 177 int pos = 0; 178 event[pos++] = HCI_EVENT_HFP_META; 179 event[pos++] = sizeof(event) - 2; 180 event[pos++] = HFP_SUBEVENT_AG_INDICATOR_STATUS_CHANGED; 181 event[pos++] = indicator.index; 182 event[pos++] = indicator.status; 183 event[pos++] = indicator.min_range; 184 event[pos++] = indicator.max_range; 185 event[pos++] = indicator.mandatory; 186 event[pos++] = indicator.enabled; 187 event[pos++] = indicator.status_changed; 188 strncpy((char*)&event[pos], indicator.name, HFP_MAX_INDICATOR_DESC_SIZE); 189 pos += HFP_MAX_INDICATOR_DESC_SIZE; 190 event[pos] = 0; 191 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 192 } 193 194 static void hfp_emit_network_operator_event(btstack_packet_handler_t callback, hfp_network_opearator_t network_operator){ 195 if (!callback) return; 196 uint8_t event[5+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE+1]; 197 event[0] = HCI_EVENT_HFP_META; 198 event[1] = sizeof(event) - 2; 199 event[2] = HFP_SUBEVENT_NETWORK_OPERATOR_CHANGED; 200 event[3] = network_operator.mode; 201 event[4] = network_operator.format; 202 strncpy((char*)&event[5], network_operator.name, HFP_MAX_NETWORK_OPERATOR_NAME_SIZE); 203 event[5+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE] = 0; 204 (*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 205 } 206 207 /* send commands */ 208 209 static inline int hfp_hf_send_cmd(uint16_t cid, const char * cmd){ 210 char buffer[20]; 211 snprintf(buffer, sizeof(buffer), "AT%s\r\n", cmd); 212 return send_str_over_rfcomm(cid, buffer); 213 } 214 215 static inline int hfp_hf_send_cmd_with_mark(uint16_t cid, const char * cmd, const char * mark){ 216 char buffer[20]; 217 snprintf(buffer, sizeof(buffer), "AT%s%s\r\n", cmd, mark); 218 return send_str_over_rfcomm(cid, buffer); 219 } 220 221 static inline int hfp_hf_send_cmd_with_int(uint16_t cid, const char * cmd, uint16_t value){ 222 char buffer[40]; 223 snprintf(buffer, sizeof(buffer), "AT%s=%d\r\n", cmd, value); 224 return send_str_over_rfcomm(cid, buffer); 225 } 226 227 static int hfp_hf_cmd_notify_on_codecs(uint16_t cid){ 228 char buffer[30]; 229 const int size = sizeof(buffer); 230 int offset = snprintf(buffer, size, "AT%s=", HFP_AVAILABLE_CODECS); 231 offset += join(buffer+offset, size-offset, hfp_codecs, hfp_codecs_nr); 232 offset += snprintf(buffer+offset, size-offset, "\r\n"); 233 return send_str_over_rfcomm(cid, buffer); 234 } 235 236 static int hfp_hf_cmd_activate_status_update_for_ag_indicator(uint16_t cid, uint32_t indicators_status, int indicators_nr){ 237 char buffer[50]; 238 const int size = sizeof(buffer); 239 int offset = snprintf(buffer, size, "AT%s=", HFP_UPDATE_ENABLE_STATUS_FOR_INDIVIDUAL_AG_INDICATORS); 240 offset += join_bitmap(buffer+offset, size-offset, indicators_status, indicators_nr); 241 offset += snprintf(buffer+offset, size-offset, "\r\n"); 242 return send_str_over_rfcomm(cid, buffer); 243 } 244 245 static int hfp_hf_cmd_list_supported_generic_status_indicators(uint16_t cid){ 246 char buffer[30]; 247 const int size = sizeof(buffer); 248 int offset = snprintf(buffer, size, "AT%s=", HFP_GENERIC_STATUS_INDICATOR); 249 offset += join(buffer+offset, size-offset, hfp_indicators, hfp_indicators_nr); 250 offset += snprintf(buffer+offset, size-offset, "\r\n"); 251 return send_str_over_rfcomm(cid, buffer); 252 } 253 254 static int hfp_hf_cmd_activate_status_update_for_all_ag_indicators(uint16_t cid, uint8_t activate){ 255 char buffer[20]; 256 snprintf(buffer, sizeof(buffer), "AT%s=3,0,0,%d\r\n", HFP_ENABLE_STATUS_UPDATE_FOR_AG_INDICATORS, activate); 257 return send_str_over_rfcomm(cid, buffer); 258 } 259 260 static int hfp_hf_initiate_outgoing_call_cmd(uint16_t cid){ 261 char buffer[40]; 262 snprintf(buffer, sizeof(buffer), "%s%s;\r\n", HFP_CALL_PHONE_NUMBER, phone_number); 263 return send_str_over_rfcomm(cid, buffer); 264 } 265 266 static int hfp_hf_send_memory_dial_cmd(uint16_t cid, int memory_id){ 267 char buffer[40]; 268 snprintf(buffer, sizeof(buffer), "%s>%d;\r\n", HFP_CALL_PHONE_NUMBER, memory_id); 269 return send_str_over_rfcomm(cid, buffer); 270 } 271 272 static int hfp_hf_send_chld(uint16_t cid, unsigned int number){ 273 char buffer[40]; 274 snprintf(buffer, sizeof(buffer), "AT%s=%u\r\n", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, number); 275 return send_str_over_rfcomm(cid, buffer); 276 } 277 278 static int hfp_hf_send_dtmf(uint16_t cid, char code){ 279 char buffer[20]; 280 snprintf(buffer, sizeof(buffer), "AT%s=%c\r\n", HFP_TRANSMIT_DTMF_CODES, code); 281 return send_str_over_rfcomm(cid, buffer); 282 } 283 284 static int hfp_hf_cmd_ata(uint16_t cid){ 285 return send_str_over_rfcomm(cid, (char *) "ATA\r\n"); 286 } 287 288 static int hfp_hf_cmd_exchange_supported_features(uint16_t cid){ 289 return hfp_hf_send_cmd_with_int(cid, HFP_SUPPORTED_FEATURES, hfp_supported_features); 290 } 291 292 static int hfp_hf_cmd_retrieve_indicators(uint16_t cid){ 293 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "=?"); 294 } 295 296 static int hfp_hf_cmd_retrieve_indicators_status(uint16_t cid){ 297 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "?"); 298 } 299 300 static int hfp_hf_cmd_retrieve_can_hold_call(uint16_t cid){ 301 return hfp_hf_send_cmd_with_mark(cid, HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, "=?"); 302 } 303 304 static int hfp_hf_cmd_retrieve_supported_generic_status_indicators(uint16_t cid){ 305 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "=?"); 306 } 307 308 static int hfp_hf_cmd_list_initital_supported_generic_status_indicators(uint16_t cid){ 309 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "?"); 310 } 311 312 static int hfp_hf_cmd_query_operator_name_format(uint16_t cid){ 313 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "=3,0"); 314 } 315 316 static int hfp_hf_cmd_query_operator_name(uint16_t cid){ 317 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "?"); 318 } 319 320 static int hfp_hf_cmd_trigger_codec_connection_setup(uint16_t cid){ 321 return hfp_hf_send_cmd(cid, HFP_TRIGGER_CODEC_CONNECTION_SETUP); 322 } 323 324 static int hfp_hf_set_microphone_gain_cmd(uint16_t cid, int gain){ 325 return hfp_hf_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 326 } 327 328 static int hfp_hf_set_speaker_gain_cmd(uint16_t cid, int gain){ 329 return hfp_hf_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 330 } 331 332 static int hfp_hf_set_calling_line_notification_cmd(uint16_t cid, uint8_t activate){ 333 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CLIP, activate); 334 } 335 336 static int hfp_hf_set_echo_canceling_and_noise_reduction_cmd(uint16_t cid, uint8_t activate){ 337 return hfp_hf_send_cmd_with_int(cid, HFP_TURN_OFF_EC_AND_NR, activate); 338 } 339 340 static int hfp_hf_set_voice_recognition_notification_cmd(uint16_t cid, uint8_t activate){ 341 return hfp_hf_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate); 342 } 343 344 static int hfp_hf_set_call_waiting_notification_cmd(uint16_t cid, uint8_t activate){ 345 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CALL_WAITING_NOTIFICATION, activate); 346 } 347 348 static int hfp_hf_cmd_confirm_codec(uint16_t cid, uint8_t codec){ 349 return hfp_hf_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 350 } 351 352 static int hfp_hf_cmd_enable_extended_audio_gateway_error_report(uint16_t cid, uint8_t enable){ 353 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR, enable); 354 } 355 356 static int hfp_hf_send_redial_last_number_cmd(uint16_t cid){ 357 return hfp_hf_send_cmd(cid, HFP_REDIAL_LAST_NUMBER); 358 } 359 360 static int hfp_hf_send_chup(uint16_t cid){ 361 return hfp_hf_send_cmd(cid, HFP_HANG_UP_CALL); 362 } 363 364 static int hfp_hf_send_binp(uint16_t cid){ 365 return hfp_hf_send_cmd_with_mark(cid, HFP_PHONE_NUMBER_FOR_VOICE_TAG, "=1"); 366 } 367 368 static int hfp_hf_send_clcc(uint16_t cid){ 369 return hfp_hf_send_cmd(cid, HFP_LIST_CURRENT_CALLS); 370 } 371 372 /* state machines */ 373 374 static int hfp_hf_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 375 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 376 if (hfp_connection->ok_pending) return 0; 377 int done = 1; 378 379 switch (hfp_connection->state){ 380 case HFP_EXCHANGE_SUPPORTED_FEATURES: 381 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 382 hfp_connection->state = HFP_W4_EXCHANGE_SUPPORTED_FEATURES; 383 hfp_hf_cmd_exchange_supported_features(hfp_connection->rfcomm_cid); 384 break; 385 case HFP_NOTIFY_ON_CODECS: 386 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 387 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 388 break; 389 case HFP_RETRIEVE_INDICATORS: 390 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 391 hfp_hf_cmd_retrieve_indicators(hfp_connection->rfcomm_cid); 392 break; 393 case HFP_RETRIEVE_INDICATORS_STATUS: 394 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 395 hfp_hf_cmd_retrieve_indicators_status(hfp_connection->rfcomm_cid); 396 break; 397 case HFP_ENABLE_INDICATORS_STATUS_UPDATE: 398 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 399 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, 1); 400 break; 401 case HFP_RETRIEVE_CAN_HOLD_CALL: 402 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 403 hfp_hf_cmd_retrieve_can_hold_call(hfp_connection->rfcomm_cid); 404 break; 405 case HFP_LIST_GENERIC_STATUS_INDICATORS: 406 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 407 hfp_hf_cmd_list_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 408 break; 409 case HFP_RETRIEVE_GENERIC_STATUS_INDICATORS: 410 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 411 hfp_hf_cmd_retrieve_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 412 break; 413 case HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 414 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 415 hfp_hf_cmd_list_initital_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 416 break; 417 default: 418 done = 0; 419 break; 420 } 421 return done; 422 } 423 424 425 static int hfp_hf_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 426 if (hfp_connection->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 427 if (hfp_connection->ok_pending) return 0; 428 429 int done = 0; 430 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 431 hfp_connection->ok_pending = 1; 432 done = 1; 433 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, hfp_connection->enable_status_update_for_ag_indicators); 434 return done; 435 }; 436 if (hfp_connection->change_status_update_for_individual_ag_indicators){ 437 hfp_connection->ok_pending = 1; 438 done = 1; 439 hfp_hf_cmd_activate_status_update_for_ag_indicator(hfp_connection->rfcomm_cid, 440 hfp_connection->ag_indicators_status_update_bitmap, 441 hfp_connection->ag_indicators_nr); 442 return done; 443 } 444 445 switch (hfp_connection->hf_query_operator_state){ 446 case HFP_HF_QUERY_OPERATOR_SET_FORMAT: 447 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK; 448 hfp_connection->ok_pending = 1; 449 hfp_hf_cmd_query_operator_name_format(hfp_connection->rfcomm_cid); 450 return 1; 451 case HFP_HF_QUERY_OPERATOR_SEND_QUERY: 452 hfp_connection->hf_query_operator_state = HPF_HF_QUERY_OPERATOR_W4_RESULT; 453 hfp_connection->ok_pending = 1; 454 hfp_hf_cmd_query_operator_name(hfp_connection->rfcomm_cid); 455 return 1; 456 default: 457 break; 458 } 459 460 if (hfp_connection->enable_extended_audio_gateway_error_report){ 461 hfp_connection->ok_pending = 1; 462 done = 1; 463 hfp_hf_cmd_enable_extended_audio_gateway_error_report(hfp_connection->rfcomm_cid, hfp_connection->enable_extended_audio_gateway_error_report); 464 return done; 465 } 466 467 return done; 468 } 469 470 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 471 472 if (hfp_connection->ok_pending) return 0; 473 474 if (hfp_connection->trigger_codec_exchange){ 475 hfp_connection->trigger_codec_exchange = 0; 476 477 hfp_connection->ok_pending = 1; 478 hfp_hf_cmd_trigger_codec_connection_setup(hfp_connection->rfcomm_cid); 479 return 1; 480 } 481 482 if (hfp_connection->hf_send_codec_confirm){ 483 hfp_connection->hf_send_codec_confirm = false; 484 485 hfp_connection->ok_pending = 1; 486 hfp_hf_cmd_confirm_codec(hfp_connection->rfcomm_cid, hfp_connection->codec_confirmed); 487 return 1; 488 } 489 490 if (hfp_connection->hf_send_supported_codecs){ 491 hfp_connection->hf_send_supported_codecs = false; 492 493 hfp_connection->ok_pending = 1; 494 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 495 return 1; 496 } 497 498 return 0; 499 } 500 501 static int hfp_hf_run_for_audio_connection(hfp_connection_t * hfp_connection){ 502 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 503 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 504 505 if (hfp_connection->release_audio_connection){ 506 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 507 hfp_connection->release_audio_connection = 0; 508 gap_disconnect(hfp_connection->sco_handle); 509 return 1; 510 } 511 512 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 513 514 // run codecs exchange 515 int done = codecs_exchange_state_machine(hfp_connection); 516 if (done) return 1; 517 518 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 519 if (hfp_connection->establish_audio_connection){ 520 hfp_connection->state = HFP_W4_SCO_CONNECTED; 521 hfp_connection->establish_audio_connection = 0; 522 hfp_setup_synchronous_connection(hfp_connection); 523 return 1; 524 } 525 526 return 0; 527 } 528 529 530 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 531 532 if (hfp_connection->ok_pending) return 0; 533 534 if (hfp_connection->hf_answer_incoming_call){ 535 hfp_hf_cmd_ata(hfp_connection->rfcomm_cid); 536 hfp_connection->hf_answer_incoming_call = 0; 537 return 1; 538 } 539 return 0; 540 } 541 542 static void hfp_hf_run_for_context(hfp_connection_t * hfp_connection){ 543 544 btstack_assert(hfp_connection != NULL); 545 btstack_assert(hfp_connection->local_role == HFP_ROLE_HF); 546 547 // during SDP query, RFCOMM CID is not set 548 if (hfp_connection->rfcomm_cid == 0) return; 549 550 // assert command could be sent 551 if (hci_can_send_command_packet_now() == 0) return; 552 553 #ifdef ENABLE_CC256X_ASSISTED_HFP 554 // WBS Disassociate 555 if (hfp_connection->cc256x_send_wbs_disassociate){ 556 hfp_connection->cc256x_send_wbs_disassociate = false; 557 hci_send_cmd(&hci_ti_wbs_disassociate); 558 return; 559 } 560 // Write Codec Config 561 if (hfp_connection->cc256x_send_write_codec_config){ 562 hfp_connection->cc256x_send_write_codec_config = false; 563 hfp_cc256x_write_codec_config(hfp_connection); 564 return; 565 } 566 // WBS Associate 567 if (hfp_connection->cc256x_send_wbs_associate){ 568 hfp_connection->cc256x_send_wbs_associate = false; 569 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 570 return; 571 } 572 #endif 573 #ifdef ENABLE_BCM_PCM_WBS 574 // Enable WBS 575 if (hfp_connection->bcm_send_enable_wbs){ 576 hfp_connection->bcm_send_enable_wbs = false; 577 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 578 return; 579 } 580 // Write I2S/PCM params 581 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 582 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 583 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 584 return; 585 } 586 // Disable WBS 587 if (hfp_connection->bcm_send_disable_wbs){ 588 hfp_connection->bcm_send_disable_wbs = false; 589 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 590 return; 591 } 592 #endif 593 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 594 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 595 hfp_finalize_connection_context(hfp_connection); 596 return; 597 } 598 #endif 599 600 if (hfp_connection->hf_accept_sco){ 601 602 bool eSCO = hfp_connection->hf_accept_sco == 2; 603 hfp_connection->hf_accept_sco = 0; 604 605 // notify about codec selection if not done already 606 if (hfp_connection->negotiated_codec == 0){ 607 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 608 } 609 610 // remote supported feature eSCO is set if link type is eSCO 611 // eSCO: S4 - max latency == transmission interval = 0x000c == 12 ms, 612 uint16_t max_latency; 613 uint8_t retransmission_effort; 614 uint16_t packet_types; 615 616 if (eSCO && hci_extended_sco_link_supported() && hci_remote_esco_supported(hfp_connection->acl_handle)){ 617 max_latency = 0x000c; 618 retransmission_effort = 0x02; 619 // eSCO: EV3 and 2-EV3 620 packet_types = 0x0048; 621 } else { 622 max_latency = 0xffff; 623 retransmission_effort = 0xff; 624 // sco: HV1 and HV3 625 packet_types = 0x005; 626 } 627 628 // mSBC only allows for transparent data 629 uint16_t sco_voice_setting = hci_get_sco_voice_setting(); 630 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){ 631 #ifdef ENABLE_BCM_PCM_WBS 632 sco_voice_setting = 0x0063; // Transparent data, 16-bit for BCM controllers 633 #else 634 sco_voice_setting = 0x0043; // Transparent data, 8-bit otherwise 635 #endif 636 } 637 638 // filter packet types 639 packet_types &= hfp_get_sco_packet_types(); 640 641 // bits 6-9 are 'don't allow' 642 packet_types ^= 0x3c0; 643 644 log_info("HFP: sending hci_accept_connection_request, packet types 0x%04x, sco_voice_setting 0x%02x", packet_types, sco_voice_setting); 645 hci_send_cmd(&hci_accept_synchronous_connection, hfp_connection->remote_addr, 8000, 8000, max_latency, 646 sco_voice_setting, retransmission_effort, packet_types); 647 return; 648 } 649 650 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 651 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 652 return; 653 } 654 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection); 655 if (!done){ 656 done = hfp_hf_run_for_context_service_level_connection_queries(hfp_connection); 657 } 658 if (!done){ 659 done = hfp_hf_run_for_audio_connection(hfp_connection); 660 } 661 if (!done){ 662 done = call_setup_state_machine(hfp_connection); 663 } 664 665 // don't send a new command while ok still pending 666 if (hfp_connection->ok_pending) return; 667 668 if (hfp_connection->send_microphone_gain){ 669 hfp_connection->send_microphone_gain = 0; 670 hfp_connection->ok_pending = 1; 671 hfp_hf_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 672 return; 673 } 674 675 if (hfp_connection->send_speaker_gain){ 676 hfp_connection->send_speaker_gain = 0; 677 hfp_connection->ok_pending = 1; 678 hfp_hf_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 679 return; 680 } 681 682 if (hfp_connection->hf_deactivate_calling_line_notification){ 683 hfp_connection->hf_deactivate_calling_line_notification = 0; 684 hfp_connection->ok_pending = 1; 685 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 0); 686 return; 687 } 688 689 if (hfp_connection->hf_activate_calling_line_notification){ 690 hfp_connection->hf_activate_calling_line_notification = 0; 691 hfp_connection->ok_pending = 1; 692 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 1); 693 return; 694 } 695 696 if (hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction){ 697 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 0; 698 hfp_connection->ok_pending = 1; 699 hfp_hf_set_echo_canceling_and_noise_reduction_cmd(hfp_connection->rfcomm_cid, 0); 700 return; 701 } 702 703 if (hfp_connection->hf_activate_echo_canceling_and_noise_reduction){ 704 hfp_connection->hf_activate_echo_canceling_and_noise_reduction = 0; 705 hfp_connection->ok_pending = 1; 706 hfp_hf_set_echo_canceling_and_noise_reduction_cmd(hfp_connection->rfcomm_cid, 1); 707 return; 708 } 709 710 if (hfp_connection->hf_deactivate_voice_recognition_notification){ 711 hfp_connection->hf_deactivate_voice_recognition_notification = 0; 712 hfp_connection->ok_pending = 1; 713 hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 0); 714 return; 715 } 716 717 if (hfp_connection->hf_activate_voice_recognition_notification){ 718 hfp_connection->hf_activate_voice_recognition_notification = 0; 719 hfp_connection->ok_pending = 1; 720 hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 1); 721 return; 722 } 723 724 725 if (hfp_connection->hf_deactivate_call_waiting_notification){ 726 hfp_connection->hf_deactivate_call_waiting_notification = 0; 727 hfp_connection->ok_pending = 1; 728 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 0); 729 return; 730 } 731 732 if (hfp_connection->hf_activate_call_waiting_notification){ 733 hfp_connection->hf_activate_call_waiting_notification = 0; 734 hfp_connection->ok_pending = 1; 735 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 1); 736 return; 737 } 738 739 if (hfp_connection->hf_initiate_outgoing_call){ 740 hfp_connection->hf_initiate_outgoing_call = 0; 741 hfp_connection->ok_pending = 1; 742 hfp_hf_initiate_outgoing_call_cmd(hfp_connection->rfcomm_cid); 743 return; 744 } 745 746 if (hfp_connection->hf_initiate_memory_dialing){ 747 hfp_connection->hf_initiate_memory_dialing = 0; 748 hfp_connection->ok_pending = 1; 749 hfp_hf_send_memory_dial_cmd(hfp_connection->rfcomm_cid, hfp_connection->memory_id); 750 return; 751 } 752 753 if (hfp_connection->hf_initiate_redial_last_number){ 754 hfp_connection->hf_initiate_redial_last_number = 0; 755 hfp_connection->ok_pending = 1; 756 hfp_hf_send_redial_last_number_cmd(hfp_connection->rfcomm_cid); 757 return; 758 } 759 760 if (hfp_connection->hf_send_chup){ 761 hfp_connection->hf_send_chup = 0; 762 hfp_connection->ok_pending = 1; 763 hfp_hf_send_chup(hfp_connection->rfcomm_cid); 764 return; 765 } 766 767 if (hfp_connection->hf_send_chld_0){ 768 hfp_connection->hf_send_chld_0 = 0; 769 hfp_connection->ok_pending = 1; 770 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 0); 771 return; 772 } 773 774 if (hfp_connection->hf_send_chld_1){ 775 hfp_connection->hf_send_chld_1 = 0; 776 hfp_connection->ok_pending = 1; 777 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 1); 778 return; 779 } 780 781 if (hfp_connection->hf_send_chld_2){ 782 hfp_connection->hf_send_chld_2 = 0; 783 hfp_connection->ok_pending = 1; 784 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 2); 785 return; 786 } 787 788 if (hfp_connection->hf_send_chld_3){ 789 hfp_connection->hf_send_chld_3 = 0; 790 hfp_connection->ok_pending = 1; 791 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 3); 792 return; 793 } 794 795 if (hfp_connection->hf_send_chld_4){ 796 hfp_connection->hf_send_chld_4 = 0; 797 hfp_connection->ok_pending = 1; 798 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 4); 799 return; 800 } 801 802 if (hfp_connection->hf_send_chld_x){ 803 hfp_connection->hf_send_chld_x = 0; 804 hfp_connection->ok_pending = 1; 805 hfp_hf_send_chld(hfp_connection->rfcomm_cid, hfp_connection->hf_send_chld_x_index); 806 return; 807 } 808 809 if (hfp_connection->hf_send_dtmf_code){ 810 char code = hfp_connection->hf_send_dtmf_code; 811 hfp_connection->hf_send_dtmf_code = 0; 812 hfp_connection->ok_pending = 1; 813 hfp_hf_send_dtmf(hfp_connection->rfcomm_cid, code); 814 return; 815 } 816 817 if (hfp_connection->hf_send_binp){ 818 hfp_connection->hf_send_binp = 0; 819 hfp_connection->ok_pending = 1; 820 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 821 return; 822 } 823 824 if (hfp_connection->hf_send_clcc){ 825 hfp_connection->hf_send_clcc = 0; 826 hfp_connection->ok_pending = 1; 827 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 828 return; 829 } 830 831 if (hfp_connection->hf_send_rrh){ 832 hfp_connection->hf_send_rrh = 0; 833 char buffer[20]; 834 switch (hfp_connection->hf_send_rrh_command){ 835 case '?': 836 snprintf(buffer, sizeof(buffer), "AT%s?\r\n", 837 HFP_RESPONSE_AND_HOLD); 838 buffer[sizeof(buffer) - 1] = 0; 839 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 840 return; 841 case '0': 842 case '1': 843 case '2': 844 snprintf(buffer, sizeof(buffer), "AT%s=%c\r\n", 845 HFP_RESPONSE_AND_HOLD, 846 hfp_connection->hf_send_rrh_command); 847 buffer[sizeof(buffer) - 1] = 0; 848 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 849 return; 850 default: 851 break; 852 } 853 return; 854 } 855 856 if (hfp_connection->hf_send_cnum){ 857 hfp_connection->hf_send_cnum = 0; 858 char buffer[20]; 859 snprintf(buffer, sizeof(buffer), "AT%s\r\n", 860 HFP_SUBSCRIBER_NUMBER_INFORMATION); 861 buffer[sizeof(buffer) - 1] = 0; 862 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 863 return; 864 } 865 866 // update HF indicators 867 if (hfp_connection->generic_status_update_bitmap){ 868 int i; 869 for (i=0;i<hfp_indicators_nr;i++){ 870 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 871 if (hfp_connection->generic_status_indicators[i].state){ 872 hfp_connection->ok_pending = 1; 873 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 874 char buffer[30]; 875 snprintf(buffer, sizeof(buffer), "AT%s=%u,%u\r\n", 876 HFP_TRANSFER_HF_INDICATOR_STATUS, 877 hfp_indicators[i], 878 (unsigned int)hfp_indicators_value[i]); 879 buffer[sizeof(buffer) - 1] = 0; 880 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 881 } else { 882 log_info("Not sending HF indicator %u as it is disabled", hfp_indicators[i]); 883 } 884 return; 885 } 886 } 887 } 888 889 if (done) return; 890 // deal with disconnect 891 switch (hfp_connection->state){ 892 case HFP_W2_DISCONNECT_RFCOMM: 893 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 894 rfcomm_disconnect(hfp_connection->rfcomm_cid); 895 break; 896 897 default: 898 break; 899 } 900 } 901 902 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 903 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 904 905 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 906 907 // restore volume settings 908 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 909 hfp_connection->send_speaker_gain = 1; 910 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 911 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 912 hfp_connection->send_microphone_gain = 1; 913 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 914 // enable all indicators 915 int i; 916 for (i=0;i<hfp_indicators_nr;i++){ 917 hfp_connection->generic_status_indicators[i].uuid = hfp_indicators[i]; 918 hfp_connection->generic_status_indicators[i].state = 1; 919 } 920 } 921 922 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 923 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_codecs_nr, hfp_codecs)){ 924 // Codec supported, confirm 925 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 926 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 927 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 928 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 929 930 hfp_connection->hf_send_codec_confirm = true; 931 } else { 932 // Codec not supported, send supported codecs 933 hfp_connection->codec_confirmed = 0; 934 hfp_connection->suggested_codec = 0; 935 hfp_connection->negotiated_codec = 0; 936 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 937 938 hfp_connection->hf_send_supported_codecs = true; 939 } 940 } 941 942 static void hfp_hf_switch_on_ok(hfp_connection_t *hfp_connection){ 943 hfp_connection->ok_pending = 0; 944 switch (hfp_connection->state){ 945 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 946 if (has_codec_negotiation_feature(hfp_connection)){ 947 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 948 break; 949 } 950 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 951 break; 952 953 case HFP_W4_NOTIFY_ON_CODECS: 954 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 955 break; 956 957 case HFP_W4_RETRIEVE_INDICATORS: 958 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 959 break; 960 961 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 962 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 963 break; 964 965 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 966 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 967 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 968 break; 969 } 970 if (has_hf_indicators_feature(hfp_connection)){ 971 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 972 break; 973 } 974 hfp_ag_slc_established(hfp_connection); 975 break; 976 977 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 978 if (has_hf_indicators_feature(hfp_connection)){ 979 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 980 break; 981 } 982 hfp_ag_slc_established(hfp_connection); 983 break; 984 985 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 986 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 987 break; 988 989 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 990 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 991 break; 992 993 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 994 hfp_ag_slc_established(hfp_connection); 995 break; 996 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 997 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 998 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 999 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1000 break; 1001 } 1002 1003 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 1004 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 1005 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1006 break; 1007 } 1008 1009 switch (hfp_connection->hf_query_operator_state){ 1010 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 1011 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1012 break; 1013 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 1014 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 1015 hfp_emit_network_operator_event(hfp_hf_callback, hfp_connection->network_operator); 1016 break; 1017 default: 1018 break; 1019 } 1020 1021 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1022 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1023 break; 1024 } 1025 1026 switch (hfp_connection->codecs_state){ 1027 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1028 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1029 break; 1030 case HFP_CODECS_HF_CONFIRMED_CODEC: 1031 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1032 break; 1033 default: 1034 break; 1035 } 1036 break; 1037 default: 1038 break; 1039 } 1040 1041 // done 1042 hfp_connection->command = HFP_CMD_NONE; 1043 } 1044 1045 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1046 uint16_t i; 1047 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1048 if (hfp_connection->ag_indicators[i].status_changed) { 1049 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1050 hfp_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1051 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1052 hfp_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1053 // avoid set but not used warning 1054 (void) hfp_callheld_status; 1055 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1056 hfp_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1057 } 1058 hfp_connection->ag_indicators[i].status_changed = 0; 1059 hfp_emit_ag_indicator_event(hfp_hf_callback, hfp_connection->ag_indicators[i]); 1060 break; 1061 } 1062 } 1063 } 1064 1065 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1066 int value; 1067 int i; 1068 switch (hfp_connection->command){ 1069 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1070 hfp_connection->command = HFP_CMD_NONE; 1071 hfp_hf_emit_subscriber_information(hfp_hf_callback, HFP_SUBEVENT_SUBSCRIBER_NUMBER_INFORMATION, 0, hfp_connection->bnip_type, hfp_connection->bnip_number); 1072 break; 1073 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1074 hfp_connection->command = HFP_CMD_NONE; 1075 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1076 break; 1077 case HFP_CMD_LIST_CURRENT_CALLS: 1078 hfp_connection->command = HFP_CMD_NONE; 1079 hfp_hf_emit_enhanced_call_status(hfp_hf_callback, hfp_connection); 1080 break; 1081 case HFP_CMD_SET_SPEAKER_GAIN: 1082 hfp_connection->command = HFP_CMD_NONE; 1083 value = btstack_atoi((char*)hfp_connection->line_buffer); 1084 hfp_hf_speaker_gain = value; 1085 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1086 break; 1087 case HFP_CMD_SET_MICROPHONE_GAIN: 1088 hfp_connection->command = HFP_CMD_NONE; 1089 value = btstack_atoi((char*)hfp_connection->line_buffer); 1090 hfp_hf_microphone_gain = value; 1091 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1092 break; 1093 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1094 hfp_connection->command = HFP_CMD_NONE; 1095 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1096 break; 1097 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1098 hfp_connection->command = HFP_CMD_NONE; 1099 hfp_hf_emit_type_and_number(hfp_hf_callback, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION, hfp_connection->bnip_type, hfp_connection->bnip_number); 1100 break; 1101 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1102 hfp_connection->command = HFP_CMD_NONE; 1103 hfp_hf_emit_type_and_number(hfp_hf_callback, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION, hfp_connection->bnip_type, hfp_connection->bnip_number); 1104 break; 1105 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1106 hfp_connection->command = HFP_CMD_NONE; 1107 hfp_connection->ok_pending = 0; 1108 hfp_connection->extended_audio_gateway_error = 0; 1109 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1110 break; 1111 case HFP_CMD_ERROR: 1112 hfp_connection->command = HFP_CMD_NONE; 1113 hfp_connection->ok_pending = 0; 1114 hfp_reset_context_flags(hfp_connection); 1115 switch (hfp_connection->state){ 1116 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1117 switch (hfp_connection->codecs_state){ 1118 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1119 hfp_emit_sco_event(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 0, hfp_connection->remote_addr, hfp_connection->negotiated_codec); 1120 return; 1121 default: 1122 break; 1123 } 1124 default: 1125 break; 1126 } 1127 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 1); 1128 break; 1129 case HFP_CMD_OK: 1130 hfp_hf_switch_on_ok(hfp_connection); 1131 break; 1132 case HFP_CMD_RING: 1133 hfp_connection->command = HFP_CMD_NONE; 1134 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1135 break; 1136 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1137 hfp_connection->command = HFP_CMD_NONE; 1138 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1139 break; 1140 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1141 hfp_connection->command = HFP_CMD_NONE; 1142 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1143 hfp_emit_ag_indicator_event(hfp_hf_callback, hfp_connection->ag_indicators[i]); 1144 } 1145 break; 1146 case HFP_CMD_AG_SUGGESTED_CODEC: 1147 hfp_connection->command = HFP_CMD_NONE; 1148 hfp_hf_handle_suggested_codec(hfp_connection); 1149 break; 1150 default: 1151 break; 1152 } 1153 } 1154 1155 static int hfp_parser_is_end_of_line(uint8_t byte){ 1156 return (byte == '\n') || (byte == '\r'); 1157 } 1158 1159 static void hfp_hf_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1160 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1161 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1162 if (size < 1) return; 1163 1164 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1165 if (!hfp_connection) return; 1166 1167 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1168 #ifdef ENABLE_HFP_AT_MESSAGES 1169 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1170 #endif 1171 1172 // process messages byte-wise 1173 int pos; 1174 for (pos = 0; pos < size; pos++){ 1175 hfp_parse(hfp_connection, packet[pos], 1); 1176 1177 // parse until end of line "\r\n" 1178 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1179 1180 hfp_hf_handle_rfcomm_command(hfp_connection); 1181 } 1182 hfp_hf_run_for_context(hfp_connection); 1183 } 1184 1185 static void hfp_hf_run(void){ 1186 btstack_linked_list_iterator_t it; 1187 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1188 while (btstack_linked_list_iterator_has_next(&it)){ 1189 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1190 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1191 hfp_hf_run_for_context(hfp_connection); 1192 } 1193 } 1194 1195 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1196 switch (packet_type){ 1197 case RFCOMM_DATA_PACKET: 1198 hfp_hf_handle_rfcomm_data(packet_type, channel, packet, size); 1199 break; 1200 case HCI_EVENT_PACKET: 1201 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1202 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1203 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1204 return; 1205 } 1206 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1207 break; 1208 default: 1209 break; 1210 } 1211 hfp_hf_run(); 1212 } 1213 1214 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1215 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1216 hfp_hf_run(); 1217 } 1218 1219 void hfp_hf_init(uint16_t rfcomm_channel_nr){ 1220 hfp_init(); 1221 hfp_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1222 hfp_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1223 hfp_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1224 hfp_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1225 hfp_codecs_nr = 0; 1226 hfp_hf_speaker_gain = 9; 1227 hfp_hf_microphone_gain = 9; 1228 hfp_indicators_nr = 0; 1229 hfp_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1230 1231 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1232 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1233 1234 rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1235 1236 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1237 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1238 } 1239 1240 void hfp_hf_deinit(void){ 1241 hfp_deinit(); 1242 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1243 (void) memset(&hfp_hf_callback, 0, sizeof(btstack_packet_handler_t)); 1244 (void) memset(phone_number, 0, sizeof(phone_number)); 1245 } 1246 1247 void hfp_hf_init_codecs(int codecs_nr, const uint8_t * codecs){ 1248 if (codecs_nr > HFP_MAX_NUM_CODECS){ 1249 log_error("hfp_hf_init_codecs: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 1250 return; 1251 } 1252 1253 hfp_codecs_nr = codecs_nr; 1254 int i; 1255 for (i=0; i<codecs_nr; i++){ 1256 hfp_codecs[i] = codecs[i]; 1257 } 1258 } 1259 1260 void hfp_hf_init_supported_features(uint32_t supported_features){ 1261 hfp_supported_features = supported_features; 1262 } 1263 1264 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1265 hfp_indicators_nr = indicators_nr; 1266 int i; 1267 for (i = 0; i < hfp_indicators_nr ; i++){ 1268 hfp_indicators[i] = indicators[i]; 1269 } 1270 } 1271 1272 void hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1273 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1274 } 1275 1276 void hfp_hf_release_service_level_connection(hci_con_handle_t acl_handle){ 1277 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1278 if (!hfp_connection) { 1279 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1280 return; 1281 } 1282 hfp_release_service_level_connection(hfp_connection); 1283 hfp_hf_run_for_context(hfp_connection); 1284 } 1285 1286 static void hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1287 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1288 if (!hfp_connection) { 1289 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1290 return; 1291 } 1292 hfp_connection->enable_status_update_for_ag_indicators = enable; 1293 hfp_hf_run_for_context(hfp_connection); 1294 } 1295 1296 void hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1297 hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1298 } 1299 1300 void hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1301 hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1302 } 1303 1304 // TODO: returned ERROR - wrong format 1305 void hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1306 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1307 if (!hfp_connection) { 1308 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1309 return; 1310 } 1311 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1312 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1313 hfp_hf_run_for_context(hfp_connection); 1314 } 1315 1316 void hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1317 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1318 if (!hfp_connection) { 1319 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1320 return; 1321 } 1322 switch (hfp_connection->hf_query_operator_state){ 1323 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1324 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1325 break; 1326 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1327 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1328 break; 1329 default: 1330 break; 1331 } 1332 hfp_hf_run_for_context(hfp_connection); 1333 } 1334 1335 static void hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1336 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1337 if (!hfp_connection) { 1338 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1339 return; 1340 } 1341 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1342 hfp_hf_run_for_context(hfp_connection); 1343 } 1344 1345 1346 void hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1347 hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1348 } 1349 1350 void hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1351 hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1352 } 1353 1354 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1355 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_HFSF_ESCO_S4)); 1356 } 1357 1358 void hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1359 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1360 if (!hfp_connection) { 1361 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1362 return; 1363 } 1364 hfp_connection->establish_audio_connection = 0; 1365 1366 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 1367 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 1368 1369 hfp_connection->trigger_codec_exchange = 0; 1370 hfp_connection->establish_audio_connection = 1; 1371 if (!has_codec_negotiation_feature(hfp_connection)){ 1372 log_info("no codec negotiation feature, using NBS"); 1373 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1374 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1375 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1376 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1377 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1378 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1379 } else { 1380 switch (hfp_connection->codecs_state){ 1381 case HFP_CODECS_W4_AG_COMMON_CODEC: 1382 break; 1383 default: 1384 hfp_connection->codec_confirmed = 0; 1385 hfp_connection->suggested_codec = 0; 1386 hfp_connection->negotiated_codec = 0; 1387 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1388 hfp_connection->trigger_codec_exchange = 1; 1389 break; 1390 } 1391 } 1392 1393 hfp_hf_run_for_context(hfp_connection); 1394 } 1395 1396 void hfp_hf_release_audio_connection(hci_con_handle_t acl_handle){ 1397 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1398 if (!hfp_connection) { 1399 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1400 return; 1401 } 1402 hfp_release_audio_connection(hfp_connection); 1403 hfp_hf_run_for_context(hfp_connection); 1404 } 1405 1406 void hfp_hf_answer_incoming_call(hci_con_handle_t acl_handle){ 1407 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1408 if (!hfp_connection) { 1409 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1410 return; 1411 } 1412 1413 if (hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1414 hfp_connection->hf_answer_incoming_call = 1; 1415 hfp_hf_run_for_context(hfp_connection); 1416 } else { 1417 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_callsetup_status); 1418 } 1419 } 1420 1421 void hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1422 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1423 if (!hfp_connection) { 1424 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1425 return; 1426 } 1427 hfp_connection->hf_send_chup = 1; 1428 hfp_hf_run_for_context(hfp_connection); 1429 } 1430 1431 void hfp_hf_reject_incoming_call(hci_con_handle_t acl_handle){ 1432 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1433 if (!hfp_connection) { 1434 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1435 return; 1436 } 1437 1438 if (hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1439 hfp_connection->hf_send_chup = 1; 1440 hfp_hf_run_for_context(hfp_connection); 1441 } 1442 } 1443 1444 void hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1445 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1446 if (!hfp_connection) { 1447 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1448 return; 1449 } 1450 1451 if (hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1452 hfp_connection->hf_send_chld_0 = 1; 1453 hfp_hf_run_for_context(hfp_connection); 1454 } 1455 } 1456 1457 void hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1458 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1459 if (!hfp_connection) { 1460 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1461 return; 1462 } 1463 1464 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1465 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1466 hfp_connection->hf_send_chld_1 = 1; 1467 hfp_hf_run_for_context(hfp_connection); 1468 } 1469 } 1470 1471 void hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1472 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1473 if (!hfp_connection) { 1474 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1475 return; 1476 } 1477 1478 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1479 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1480 hfp_connection->hf_send_chld_2 = 1; 1481 hfp_hf_run_for_context(hfp_connection); 1482 } 1483 } 1484 1485 void hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1486 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1487 if (!hfp_connection) { 1488 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1489 return; 1490 } 1491 1492 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1493 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1494 hfp_connection->hf_send_chld_3 = 1; 1495 hfp_hf_run_for_context(hfp_connection); 1496 } 1497 } 1498 1499 void hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1500 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1501 if (!hfp_connection) { 1502 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1503 return; 1504 } 1505 1506 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1507 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1508 hfp_connection->hf_send_chld_4 = 1; 1509 hfp_hf_run_for_context(hfp_connection); 1510 } 1511 } 1512 1513 void hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1514 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1515 if (!hfp_connection) { 1516 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1517 return; 1518 } 1519 1520 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1521 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1522 hfp_connection->hf_send_chld_x = 1; 1523 hfp_connection->hf_send_chld_x_index = 10 + index; 1524 hfp_hf_run_for_context(hfp_connection); 1525 } 1526 } 1527 1528 void hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 1529 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1530 if (!hfp_connection) { 1531 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1532 return; 1533 } 1534 1535 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1536 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1537 hfp_connection->hf_send_chld_x = 1; 1538 hfp_connection->hf_send_chld_x_index = 20 + index; 1539 hfp_hf_run_for_context(hfp_connection); 1540 } 1541 } 1542 1543 void hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 1544 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1545 if (!hfp_connection) { 1546 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1547 return; 1548 } 1549 1550 hfp_connection->hf_initiate_outgoing_call = 1; 1551 snprintf(phone_number, sizeof(phone_number), "%s", number); 1552 hfp_hf_run_for_context(hfp_connection); 1553 } 1554 1555 void hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 1556 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1557 if (!hfp_connection) { 1558 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1559 return; 1560 } 1561 1562 hfp_connection->hf_initiate_memory_dialing = 1; 1563 hfp_connection->memory_id = memory_id; 1564 1565 hfp_hf_run_for_context(hfp_connection); 1566 } 1567 1568 void hfp_hf_redial_last_number(hci_con_handle_t acl_handle){ 1569 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1570 if (!hfp_connection) { 1571 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1572 return; 1573 } 1574 1575 hfp_connection->hf_initiate_redial_last_number = 1; 1576 hfp_hf_run_for_context(hfp_connection); 1577 } 1578 1579 void hfp_hf_activate_call_waiting_notification(hci_con_handle_t acl_handle){ 1580 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1581 if (!hfp_connection) { 1582 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1583 return; 1584 } 1585 1586 hfp_connection->hf_activate_call_waiting_notification = 1; 1587 hfp_hf_run_for_context(hfp_connection); 1588 } 1589 1590 1591 void hfp_hf_deactivate_call_waiting_notification(hci_con_handle_t acl_handle){ 1592 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1593 if (!hfp_connection) { 1594 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1595 return; 1596 } 1597 1598 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1599 hfp_hf_run_for_context(hfp_connection); 1600 } 1601 1602 1603 void hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1604 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1605 if (!hfp_connection) { 1606 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1607 return; 1608 } 1609 1610 hfp_connection->hf_activate_calling_line_notification = 1; 1611 hfp_hf_run_for_context(hfp_connection); 1612 } 1613 1614 void hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1615 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1616 if (!hfp_connection) { 1617 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1618 return; 1619 } 1620 1621 hfp_connection->hf_deactivate_calling_line_notification = 1; 1622 hfp_hf_run_for_context(hfp_connection); 1623 } 1624 1625 1626 void hfp_hf_activate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1627 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1628 if (!hfp_connection) { 1629 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1630 return; 1631 } 1632 1633 hfp_connection->hf_activate_echo_canceling_and_noise_reduction = 1; 1634 hfp_hf_run_for_context(hfp_connection); 1635 } 1636 1637 void hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1638 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1639 if (!hfp_connection) { 1640 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1641 return; 1642 } 1643 1644 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1645 hfp_hf_run_for_context(hfp_connection); 1646 } 1647 1648 void hfp_hf_activate_voice_recognition_notification(hci_con_handle_t acl_handle){ 1649 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1650 if (!hfp_connection) { 1651 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1652 return; 1653 } 1654 1655 hfp_connection->hf_activate_voice_recognition_notification = 1; 1656 hfp_hf_run_for_context(hfp_connection); 1657 } 1658 1659 void hfp_hf_deactivate_voice_recognition_notification(hci_con_handle_t acl_handle){ 1660 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1661 if (!hfp_connection) { 1662 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1663 return; 1664 } 1665 1666 hfp_connection->hf_deactivate_voice_recognition_notification = 1; 1667 hfp_hf_run_for_context(hfp_connection); 1668 } 1669 1670 void hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 1671 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1672 if (!hfp_connection) { 1673 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1674 return; 1675 } 1676 1677 if (hfp_connection->microphone_gain == gain) return; 1678 if ((gain < 0) || (gain > 15)){ 1679 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 1680 return; 1681 } 1682 hfp_connection->microphone_gain = gain; 1683 hfp_connection->send_microphone_gain = 1; 1684 hfp_hf_run_for_context(hfp_connection); 1685 } 1686 1687 void hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 1688 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1689 if (!hfp_connection) { 1690 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1691 return; 1692 } 1693 1694 if (hfp_connection->speaker_gain == gain) return; 1695 if ((gain < 0) || (gain > 15)){ 1696 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 1697 return; 1698 } 1699 hfp_connection->speaker_gain = gain; 1700 hfp_connection->send_speaker_gain = 1; 1701 hfp_hf_run_for_context(hfp_connection); 1702 } 1703 1704 void hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 1705 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1706 if (!hfp_connection) { 1707 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1708 return; 1709 } 1710 1711 hfp_connection->hf_send_dtmf_code = code; 1712 hfp_hf_run_for_context(hfp_connection); 1713 } 1714 1715 void hfp_hf_request_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 1716 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1717 if (!hfp_connection) { 1718 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1719 return; 1720 } 1721 hfp_connection->hf_send_binp = 1; 1722 hfp_hf_run_for_context(hfp_connection); 1723 } 1724 1725 void hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 1726 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1727 if (!hfp_connection) { 1728 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1729 return; 1730 } 1731 hfp_connection->hf_send_clcc = 1; 1732 hfp_hf_run_for_context(hfp_connection); 1733 } 1734 1735 1736 void hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 1737 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1738 if (!hfp_connection) { 1739 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1740 return; 1741 } 1742 hfp_connection->hf_send_rrh = 1; 1743 hfp_connection->hf_send_rrh_command = '?'; 1744 hfp_hf_run_for_context(hfp_connection); 1745 } 1746 1747 void hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 1748 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1749 if (!hfp_connection) { 1750 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1751 return; 1752 } 1753 hfp_connection->hf_send_rrh = 1; 1754 hfp_connection->hf_send_rrh_command = '0'; 1755 hfp_hf_run_for_context(hfp_connection); 1756 } 1757 1758 void hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 1759 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1760 if (!hfp_connection) { 1761 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1762 return; 1763 } 1764 hfp_connection->hf_send_rrh = 1; 1765 hfp_connection->hf_send_rrh_command = '1'; 1766 hfp_hf_run_for_context(hfp_connection); 1767 } 1768 1769 void hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 1770 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1771 if (!hfp_connection) { 1772 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1773 return; 1774 } 1775 hfp_connection->hf_send_rrh = 1; 1776 hfp_connection->hf_send_rrh_command = '2'; 1777 hfp_hf_run_for_context(hfp_connection); 1778 } 1779 1780 void hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 1781 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1782 if (!hfp_connection) { 1783 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1784 return; 1785 } 1786 hfp_connection->hf_send_cnum = 1; 1787 hfp_hf_run_for_context(hfp_connection); 1788 } 1789 1790 void hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 1791 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1792 if (!hfp_connection) { 1793 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1794 return; 1795 } 1796 // find index for assigned number 1797 int i; 1798 for (i = 0; i < hfp_indicators_nr ; i++){ 1799 if (hfp_indicators[i] == assigned_number){ 1800 // set value 1801 hfp_indicators_value[i] = value; 1802 // mark for update 1803 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 1804 hfp_connection->generic_status_update_bitmap |= (1<<i); 1805 // send update 1806 hfp_hf_run_for_context(hfp_connection); 1807 } 1808 return; 1809 } 1810 } 1811 } 1812 1813 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 1814 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1815 if (!hfp_connection) { 1816 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1817 return 0; 1818 } 1819 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 1820 } 1821 1822 void hfp_hf_create_sdp_record(uint8_t * service, uint32_t service_record_handle, int rfcomm_channel_nr, const char * name, uint16_t supported_features, int wide_band_speech){ 1823 if (!name){ 1824 name = default_hfp_hf_service_name; 1825 } 1826 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 1827 1828 // Construct SupportedFeatures for SDP bitmap: 1829 // 1830 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 1831 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 1832 // 1833 // Wide band speech (bit 5) requires Codec negotiation 1834 // 1835 uint16_t sdp_features = supported_features & 0x1f; 1836 if (wide_band_speech && (supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION))){ 1837 sdp_features |= 1 << 5; 1838 } 1839 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 1840 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 1841 } 1842 1843 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 1844 if (callback == NULL){ 1845 log_error("hfp_hf_register_packet_handler called with NULL callback"); 1846 return; 1847 } 1848 hfp_hf_callback = callback; 1849 hfp_set_hf_callback(callback); 1850 } 1851