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