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 593 594 if (hfp_connection->hf_accept_sco){ 595 596 bool eSCO = hfp_connection->hf_accept_sco == 2; 597 hfp_connection->hf_accept_sco = 0; 598 599 // notify about codec selection if not done already 600 if (hfp_connection->negotiated_codec == 0){ 601 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 602 } 603 604 // remote supported feature eSCO is set if link type is eSCO 605 // eSCO: S4 - max latency == transmission interval = 0x000c == 12 ms, 606 uint16_t max_latency; 607 uint8_t retransmission_effort; 608 uint16_t packet_types; 609 610 if (eSCO && hci_extended_sco_link_supported() && hci_remote_esco_supported(hfp_connection->acl_handle)){ 611 max_latency = 0x000c; 612 retransmission_effort = 0x02; 613 // eSCO: EV3 and 2-EV3 614 packet_types = 0x0048; 615 } else { 616 max_latency = 0xffff; 617 retransmission_effort = 0xff; 618 // sco: HV1 and HV3 619 packet_types = 0x005; 620 } 621 622 // mSBC only allows for transparent data 623 uint16_t sco_voice_setting = hci_get_sco_voice_setting(); 624 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){ 625 #ifdef ENABLE_BCM_PCM_WBS 626 sco_voice_setting = 0x0063; // Transparent data, 16-bit for BCM controllers 627 #else 628 sco_voice_setting = 0x0043; // Transparent data, 8-bit otherwise 629 #endif 630 } 631 632 // filter packet types 633 packet_types &= hfp_get_sco_packet_types(); 634 635 // bits 6-9 are 'don't allow' 636 packet_types ^= 0x3c0; 637 638 log_info("HFP: sending hci_accept_connection_request, packet types 0x%04x, sco_voice_setting 0x%02x", packet_types, sco_voice_setting); 639 hci_send_cmd(&hci_accept_synchronous_connection, hfp_connection->remote_addr, 8000, 8000, max_latency, 640 sco_voice_setting, retransmission_effort, packet_types); 641 return; 642 } 643 644 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 645 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 646 return; 647 } 648 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection); 649 if (!done){ 650 done = hfp_hf_run_for_context_service_level_connection_queries(hfp_connection); 651 } 652 if (!done){ 653 done = hfp_hf_run_for_audio_connection(hfp_connection); 654 } 655 if (!done){ 656 done = call_setup_state_machine(hfp_connection); 657 } 658 659 // don't send a new command while ok still pending 660 if (hfp_connection->ok_pending) return; 661 662 if (hfp_connection->send_microphone_gain){ 663 hfp_connection->send_microphone_gain = 0; 664 hfp_connection->ok_pending = 1; 665 hfp_hf_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 666 return; 667 } 668 669 if (hfp_connection->send_speaker_gain){ 670 hfp_connection->send_speaker_gain = 0; 671 hfp_connection->ok_pending = 1; 672 hfp_hf_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 673 return; 674 } 675 676 if (hfp_connection->hf_deactivate_calling_line_notification){ 677 hfp_connection->hf_deactivate_calling_line_notification = 0; 678 hfp_connection->ok_pending = 1; 679 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 0); 680 return; 681 } 682 683 if (hfp_connection->hf_activate_calling_line_notification){ 684 hfp_connection->hf_activate_calling_line_notification = 0; 685 hfp_connection->ok_pending = 1; 686 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 1); 687 return; 688 } 689 690 if (hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction){ 691 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 0; 692 hfp_connection->ok_pending = 1; 693 hfp_hf_set_echo_canceling_and_noise_reduction_cmd(hfp_connection->rfcomm_cid, 0); 694 return; 695 } 696 697 if (hfp_connection->hf_activate_echo_canceling_and_noise_reduction){ 698 hfp_connection->hf_activate_echo_canceling_and_noise_reduction = 0; 699 hfp_connection->ok_pending = 1; 700 hfp_hf_set_echo_canceling_and_noise_reduction_cmd(hfp_connection->rfcomm_cid, 1); 701 return; 702 } 703 704 if (hfp_connection->hf_deactivate_voice_recognition_notification){ 705 hfp_connection->hf_deactivate_voice_recognition_notification = 0; 706 hfp_connection->ok_pending = 1; 707 hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 0); 708 return; 709 } 710 711 if (hfp_connection->hf_activate_voice_recognition_notification){ 712 hfp_connection->hf_activate_voice_recognition_notification = 0; 713 hfp_connection->ok_pending = 1; 714 hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 1); 715 return; 716 } 717 718 719 if (hfp_connection->hf_deactivate_call_waiting_notification){ 720 hfp_connection->hf_deactivate_call_waiting_notification = 0; 721 hfp_connection->ok_pending = 1; 722 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 0); 723 return; 724 } 725 726 if (hfp_connection->hf_activate_call_waiting_notification){ 727 hfp_connection->hf_activate_call_waiting_notification = 0; 728 hfp_connection->ok_pending = 1; 729 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 1); 730 return; 731 } 732 733 if (hfp_connection->hf_initiate_outgoing_call){ 734 hfp_connection->hf_initiate_outgoing_call = 0; 735 hfp_connection->ok_pending = 1; 736 hfp_hf_initiate_outgoing_call_cmd(hfp_connection->rfcomm_cid); 737 return; 738 } 739 740 if (hfp_connection->hf_initiate_memory_dialing){ 741 hfp_connection->hf_initiate_memory_dialing = 0; 742 hfp_connection->ok_pending = 1; 743 hfp_hf_send_memory_dial_cmd(hfp_connection->rfcomm_cid, hfp_connection->memory_id); 744 return; 745 } 746 747 if (hfp_connection->hf_initiate_redial_last_number){ 748 hfp_connection->hf_initiate_redial_last_number = 0; 749 hfp_connection->ok_pending = 1; 750 hfp_hf_send_redial_last_number_cmd(hfp_connection->rfcomm_cid); 751 return; 752 } 753 754 if (hfp_connection->hf_send_chup){ 755 hfp_connection->hf_send_chup = 0; 756 hfp_connection->ok_pending = 1; 757 hfp_hf_send_chup(hfp_connection->rfcomm_cid); 758 return; 759 } 760 761 if (hfp_connection->hf_send_chld_0){ 762 hfp_connection->hf_send_chld_0 = 0; 763 hfp_connection->ok_pending = 1; 764 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 0); 765 return; 766 } 767 768 if (hfp_connection->hf_send_chld_1){ 769 hfp_connection->hf_send_chld_1 = 0; 770 hfp_connection->ok_pending = 1; 771 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 1); 772 return; 773 } 774 775 if (hfp_connection->hf_send_chld_2){ 776 hfp_connection->hf_send_chld_2 = 0; 777 hfp_connection->ok_pending = 1; 778 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 2); 779 return; 780 } 781 782 if (hfp_connection->hf_send_chld_3){ 783 hfp_connection->hf_send_chld_3 = 0; 784 hfp_connection->ok_pending = 1; 785 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 3); 786 return; 787 } 788 789 if (hfp_connection->hf_send_chld_4){ 790 hfp_connection->hf_send_chld_4 = 0; 791 hfp_connection->ok_pending = 1; 792 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 4); 793 return; 794 } 795 796 if (hfp_connection->hf_send_chld_x){ 797 hfp_connection->hf_send_chld_x = 0; 798 hfp_connection->ok_pending = 1; 799 hfp_hf_send_chld(hfp_connection->rfcomm_cid, hfp_connection->hf_send_chld_x_index); 800 return; 801 } 802 803 if (hfp_connection->hf_send_dtmf_code){ 804 char code = hfp_connection->hf_send_dtmf_code; 805 hfp_connection->hf_send_dtmf_code = 0; 806 hfp_connection->ok_pending = 1; 807 hfp_hf_send_dtmf(hfp_connection->rfcomm_cid, code); 808 return; 809 } 810 811 if (hfp_connection->hf_send_binp){ 812 hfp_connection->hf_send_binp = 0; 813 hfp_connection->ok_pending = 1; 814 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 815 return; 816 } 817 818 if (hfp_connection->hf_send_clcc){ 819 hfp_connection->hf_send_clcc = 0; 820 hfp_connection->ok_pending = 1; 821 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 822 return; 823 } 824 825 if (hfp_connection->hf_send_rrh){ 826 hfp_connection->hf_send_rrh = 0; 827 char buffer[20]; 828 switch (hfp_connection->hf_send_rrh_command){ 829 case '?': 830 sprintf(buffer, "AT%s?\r\n", HFP_RESPONSE_AND_HOLD); 831 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 832 return; 833 case '0': 834 case '1': 835 case '2': 836 sprintf(buffer, "AT%s=%c\r\n", HFP_RESPONSE_AND_HOLD, hfp_connection->hf_send_rrh_command); 837 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 838 return; 839 default: 840 break; 841 } 842 return; 843 } 844 845 if (hfp_connection->hf_send_cnum){ 846 hfp_connection->hf_send_cnum = 0; 847 char buffer[20]; 848 sprintf(buffer, "AT%s\r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION); 849 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 850 return; 851 } 852 853 // update HF indicators 854 if (hfp_connection->generic_status_update_bitmap){ 855 int i; 856 for (i=0;i<hfp_indicators_nr;i++){ 857 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 858 if (hfp_connection->generic_status_indicators[i].state){ 859 hfp_connection->ok_pending = 1; 860 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 861 char buffer[30]; 862 sprintf(buffer, "AT%s=%u,%u\r\n", HFP_TRANSFER_HF_INDICATOR_STATUS, hfp_indicators[i], (unsigned int) hfp_indicators_value[i]); 863 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 864 } else { 865 log_info("Not sending HF indicator %u as it is disabled", hfp_indicators[i]); 866 } 867 return; 868 } 869 } 870 } 871 872 if (done) return; 873 // deal with disconnect 874 switch (hfp_connection->state){ 875 case HFP_W2_DISCONNECT_RFCOMM: 876 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 877 rfcomm_disconnect(hfp_connection->rfcomm_cid); 878 break; 879 880 default: 881 break; 882 } 883 } 884 885 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 886 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 887 888 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 889 890 // restore volume settings 891 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 892 hfp_connection->send_speaker_gain = 1; 893 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 894 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 895 hfp_connection->send_microphone_gain = 1; 896 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 897 // enable all indicators 898 int i; 899 for (i=0;i<hfp_indicators_nr;i++){ 900 hfp_connection->generic_status_indicators[i].uuid = hfp_indicators[i]; 901 hfp_connection->generic_status_indicators[i].state = 1; 902 } 903 } 904 905 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 906 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_codecs_nr, hfp_codecs)){ 907 // Codec supported, confirm 908 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 909 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 910 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 911 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 912 913 hfp_connection->hf_send_codec_confirm = true; 914 } else { 915 // Codec not supported, send supported codecs 916 hfp_connection->codec_confirmed = 0; 917 hfp_connection->suggested_codec = 0; 918 hfp_connection->negotiated_codec = 0; 919 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 920 921 hfp_connection->hf_send_supported_codecs = true; 922 } 923 } 924 925 static void hfp_hf_switch_on_ok(hfp_connection_t *hfp_connection){ 926 hfp_connection->ok_pending = 0; 927 switch (hfp_connection->state){ 928 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 929 if (has_codec_negotiation_feature(hfp_connection)){ 930 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 931 break; 932 } 933 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 934 break; 935 936 case HFP_W4_NOTIFY_ON_CODECS: 937 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 938 break; 939 940 case HFP_W4_RETRIEVE_INDICATORS: 941 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 942 break; 943 944 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 945 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 946 break; 947 948 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 949 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 950 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 951 break; 952 } 953 if (has_hf_indicators_feature(hfp_connection)){ 954 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 955 break; 956 } 957 hfp_ag_slc_established(hfp_connection); 958 break; 959 960 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 961 if (has_hf_indicators_feature(hfp_connection)){ 962 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 963 break; 964 } 965 hfp_ag_slc_established(hfp_connection); 966 break; 967 968 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 969 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 970 break; 971 972 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 973 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 974 break; 975 976 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 977 hfp_ag_slc_established(hfp_connection); 978 break; 979 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 980 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 981 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 982 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 983 break; 984 } 985 986 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 987 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 988 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 989 break; 990 } 991 992 switch (hfp_connection->hf_query_operator_state){ 993 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 994 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 995 break; 996 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 997 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 998 hfp_emit_network_operator_event(hfp_hf_callback, hfp_connection->network_operator); 999 break; 1000 default: 1001 break; 1002 } 1003 1004 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1005 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1006 break; 1007 } 1008 1009 switch (hfp_connection->codecs_state){ 1010 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1011 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1012 break; 1013 case HFP_CODECS_HF_CONFIRMED_CODEC: 1014 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1015 break; 1016 default: 1017 break; 1018 } 1019 break; 1020 default: 1021 break; 1022 } 1023 1024 // done 1025 hfp_connection->command = HFP_CMD_NONE; 1026 } 1027 1028 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1029 uint16_t i; 1030 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1031 if (hfp_connection->ag_indicators[i].status_changed) { 1032 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1033 hfp_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1034 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1035 hfp_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1036 // avoid set but not used warning 1037 (void) hfp_callheld_status; 1038 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1039 hfp_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1040 } 1041 hfp_connection->ag_indicators[i].status_changed = 0; 1042 hfp_emit_ag_indicator_event(hfp_hf_callback, hfp_connection->ag_indicators[i]); 1043 break; 1044 } 1045 } 1046 } 1047 1048 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1049 int value; 1050 int i; 1051 switch (hfp_connection->command){ 1052 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1053 hfp_connection->command = HFP_CMD_NONE; 1054 hfp_hf_emit_subscriber_information(hfp_hf_callback, HFP_SUBEVENT_SUBSCRIBER_NUMBER_INFORMATION, 0, hfp_connection->bnip_type, hfp_connection->bnip_number); 1055 break; 1056 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1057 hfp_connection->command = HFP_CMD_NONE; 1058 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1059 break; 1060 case HFP_CMD_LIST_CURRENT_CALLS: 1061 hfp_connection->command = HFP_CMD_NONE; 1062 hfp_hf_emit_enhanced_call_status(hfp_hf_callback, hfp_connection); 1063 break; 1064 case HFP_CMD_SET_SPEAKER_GAIN: 1065 hfp_connection->command = HFP_CMD_NONE; 1066 value = btstack_atoi((char*)hfp_connection->line_buffer); 1067 hfp_hf_speaker_gain = value; 1068 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1069 break; 1070 case HFP_CMD_SET_MICROPHONE_GAIN: 1071 hfp_connection->command = HFP_CMD_NONE; 1072 value = btstack_atoi((char*)hfp_connection->line_buffer); 1073 hfp_hf_microphone_gain = value; 1074 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1075 break; 1076 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1077 hfp_connection->command = HFP_CMD_NONE; 1078 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1079 break; 1080 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1081 hfp_connection->command = HFP_CMD_NONE; 1082 hfp_hf_emit_type_and_number(hfp_hf_callback, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION, hfp_connection->bnip_type, hfp_connection->bnip_number); 1083 break; 1084 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1085 hfp_connection->command = HFP_CMD_NONE; 1086 hfp_hf_emit_type_and_number(hfp_hf_callback, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION, hfp_connection->bnip_type, hfp_connection->bnip_number); 1087 break; 1088 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1089 hfp_connection->ok_pending = 0; 1090 hfp_connection->command = HFP_CMD_NONE; 1091 hfp_connection->extended_audio_gateway_error = 0; 1092 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1093 break; 1094 case HFP_CMD_ERROR: 1095 hfp_connection->ok_pending = 0; 1096 hfp_reset_context_flags(hfp_connection); 1097 hfp_connection->command = HFP_CMD_NONE; 1098 1099 switch (hfp_connection->state){ 1100 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1101 switch (hfp_connection->codecs_state){ 1102 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1103 hfp_emit_sco_event(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 0, hfp_connection->remote_addr, hfp_connection->negotiated_codec); 1104 return; 1105 default: 1106 break; 1107 } 1108 default: 1109 break; 1110 } 1111 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 1); 1112 break; 1113 case HFP_CMD_OK: 1114 hfp_hf_switch_on_ok(hfp_connection); 1115 break; 1116 case HFP_CMD_RING: 1117 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1118 break; 1119 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1120 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1121 break; 1122 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1123 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1124 hfp_emit_ag_indicator_event(hfp_hf_callback, hfp_connection->ag_indicators[i]); 1125 } 1126 hfp_connection->command = HFP_CMD_NONE; 1127 break; 1128 case HFP_CMD_AG_SUGGESTED_CODEC: 1129 hfp_hf_handle_suggested_codec(hfp_connection); 1130 hfp_connection->command = HFP_CMD_NONE; 1131 break; 1132 default: 1133 break; 1134 } 1135 } 1136 1137 static int hfp_parser_is_end_of_line(uint8_t byte){ 1138 return (byte == '\n') || (byte == '\r'); 1139 } 1140 1141 static void hfp_hf_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1142 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1143 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1144 if (size < 1) return; 1145 1146 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1147 if (!hfp_connection) return; 1148 1149 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1150 #ifdef ENABLE_HFP_AT_MESSAGES 1151 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1152 #endif 1153 1154 // process messages byte-wise 1155 int pos; 1156 for (pos = 0; pos < size; pos++){ 1157 hfp_parse(hfp_connection, packet[pos], 1); 1158 1159 // parse until end of line "\r\n" 1160 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1161 1162 hfp_hf_handle_rfcomm_command(hfp_connection); 1163 } 1164 hfp_hf_run_for_context(hfp_connection); 1165 } 1166 1167 static void hfp_hf_run(void){ 1168 btstack_linked_list_iterator_t it; 1169 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1170 while (btstack_linked_list_iterator_has_next(&it)){ 1171 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1172 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1173 hfp_hf_run_for_context(hfp_connection); 1174 } 1175 } 1176 1177 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1178 switch (packet_type){ 1179 case RFCOMM_DATA_PACKET: 1180 hfp_hf_handle_rfcomm_data(packet_type, channel, packet, size); 1181 break; 1182 case HCI_EVENT_PACKET: 1183 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1184 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1185 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1186 return; 1187 } 1188 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1189 break; 1190 default: 1191 break; 1192 } 1193 hfp_hf_run(); 1194 } 1195 1196 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1197 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1198 hfp_hf_run(); 1199 } 1200 1201 void hfp_hf_init(uint16_t rfcomm_channel_nr){ 1202 hfp_init(); 1203 hfp_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1204 hfp_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1205 hfp_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1206 hfp_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1207 hfp_codecs_nr = 0; 1208 hfp_hf_speaker_gain = 9; 1209 hfp_hf_microphone_gain = 9; 1210 hfp_indicators_nr = 0; 1211 hfp_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1212 1213 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1214 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1215 1216 rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1217 1218 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1219 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1220 } 1221 1222 void hfp_hf_deinit(void){ 1223 hfp_deinit(); 1224 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1225 (void) memset(&hfp_hf_callback, 0, sizeof(btstack_packet_handler_t)); 1226 (void) memset(phone_number, 0, sizeof(phone_number)); 1227 } 1228 1229 void hfp_hf_init_codecs(int codecs_nr, uint8_t * codecs){ 1230 if (codecs_nr > HFP_MAX_NUM_CODECS){ 1231 log_error("hfp_hf_init_codecs: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 1232 return; 1233 } 1234 1235 hfp_codecs_nr = codecs_nr; 1236 int i; 1237 for (i=0; i<codecs_nr; i++){ 1238 hfp_codecs[i] = codecs[i]; 1239 } 1240 } 1241 1242 void hfp_hf_init_supported_features(uint32_t supported_features){ 1243 hfp_supported_features = supported_features; 1244 } 1245 1246 void hfp_hf_init_hf_indicators(int indicators_nr, uint16_t * indicators){ 1247 hfp_indicators_nr = indicators_nr; 1248 int i; 1249 for (i = 0; i < hfp_indicators_nr ; i++){ 1250 hfp_indicators[i] = indicators[i]; 1251 } 1252 } 1253 1254 void hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1255 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1256 } 1257 1258 void hfp_hf_release_service_level_connection(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 hfp_release_service_level_connection(hfp_connection); 1265 hfp_hf_run_for_context(hfp_connection); 1266 } 1267 1268 static void hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1269 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1270 if (!hfp_connection) { 1271 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1272 return; 1273 } 1274 hfp_connection->enable_status_update_for_ag_indicators = enable; 1275 hfp_hf_run_for_context(hfp_connection); 1276 } 1277 1278 void hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1279 hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1280 } 1281 1282 void hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1283 hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1284 } 1285 1286 // TODO: returned ERROR - wrong format 1287 void hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1288 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1289 if (!hfp_connection) { 1290 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1291 return; 1292 } 1293 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1294 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1295 hfp_hf_run_for_context(hfp_connection); 1296 } 1297 1298 void hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1299 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1300 if (!hfp_connection) { 1301 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1302 return; 1303 } 1304 switch (hfp_connection->hf_query_operator_state){ 1305 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1306 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1307 break; 1308 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1309 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1310 break; 1311 default: 1312 break; 1313 } 1314 hfp_hf_run_for_context(hfp_connection); 1315 } 1316 1317 static void hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1318 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1319 if (!hfp_connection) { 1320 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1321 return; 1322 } 1323 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1324 hfp_hf_run_for_context(hfp_connection); 1325 } 1326 1327 1328 void hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1329 hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1330 } 1331 1332 void hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1333 hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1334 } 1335 1336 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1337 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_HFSF_ESCO_S4)); 1338 } 1339 1340 void hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1341 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1342 if (!hfp_connection) { 1343 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1344 return; 1345 } 1346 hfp_connection->establish_audio_connection = 0; 1347 1348 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 1349 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 1350 1351 hfp_connection->trigger_codec_exchange = 0; 1352 hfp_connection->establish_audio_connection = 1; 1353 if (!has_codec_negotiation_feature(hfp_connection)){ 1354 log_info("no codec negotiation feature, using NBS"); 1355 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1356 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1357 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1358 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1359 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1360 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1361 } else { 1362 switch (hfp_connection->codecs_state){ 1363 case HFP_CODECS_W4_AG_COMMON_CODEC: 1364 break; 1365 default: 1366 hfp_connection->codec_confirmed = 0; 1367 hfp_connection->suggested_codec = 0; 1368 hfp_connection->negotiated_codec = 0; 1369 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1370 hfp_connection->trigger_codec_exchange = 1; 1371 break; 1372 } 1373 } 1374 1375 hfp_hf_run_for_context(hfp_connection); 1376 } 1377 1378 void hfp_hf_release_audio_connection(hci_con_handle_t acl_handle){ 1379 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1380 if (!hfp_connection) { 1381 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1382 return; 1383 } 1384 hfp_release_audio_connection(hfp_connection); 1385 hfp_hf_run_for_context(hfp_connection); 1386 } 1387 1388 void hfp_hf_answer_incoming_call(hci_con_handle_t acl_handle){ 1389 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1390 if (!hfp_connection) { 1391 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1392 return; 1393 } 1394 1395 if (hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1396 hfp_connection->hf_answer_incoming_call = 1; 1397 hfp_hf_run_for_context(hfp_connection); 1398 } else { 1399 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_callsetup_status); 1400 } 1401 } 1402 1403 void hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1404 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1405 if (!hfp_connection) { 1406 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1407 return; 1408 } 1409 hfp_connection->hf_send_chup = 1; 1410 hfp_hf_run_for_context(hfp_connection); 1411 } 1412 1413 void hfp_hf_reject_incoming_call(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_connection->hf_send_chup = 1; 1422 hfp_hf_run_for_context(hfp_connection); 1423 } 1424 } 1425 1426 void hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1427 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1428 if (!hfp_connection) { 1429 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1430 return; 1431 } 1432 1433 if (hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1434 hfp_connection->hf_send_chld_0 = 1; 1435 hfp_hf_run_for_context(hfp_connection); 1436 } 1437 } 1438 1439 void hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1440 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1441 if (!hfp_connection) { 1442 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1443 return; 1444 } 1445 1446 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1447 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1448 hfp_connection->hf_send_chld_1 = 1; 1449 hfp_hf_run_for_context(hfp_connection); 1450 } 1451 } 1452 1453 void hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1454 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1455 if (!hfp_connection) { 1456 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1457 return; 1458 } 1459 1460 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1461 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1462 hfp_connection->hf_send_chld_2 = 1; 1463 hfp_hf_run_for_context(hfp_connection); 1464 } 1465 } 1466 1467 void hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1468 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1469 if (!hfp_connection) { 1470 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1471 return; 1472 } 1473 1474 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1475 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1476 hfp_connection->hf_send_chld_3 = 1; 1477 hfp_hf_run_for_context(hfp_connection); 1478 } 1479 } 1480 1481 void hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1482 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1483 if (!hfp_connection) { 1484 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1485 return; 1486 } 1487 1488 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1489 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1490 hfp_connection->hf_send_chld_4 = 1; 1491 hfp_hf_run_for_context(hfp_connection); 1492 } 1493 } 1494 1495 void hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1496 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1497 if (!hfp_connection) { 1498 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1499 return; 1500 } 1501 1502 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1503 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1504 hfp_connection->hf_send_chld_x = 1; 1505 hfp_connection->hf_send_chld_x_index = 10 + index; 1506 hfp_hf_run_for_context(hfp_connection); 1507 } 1508 } 1509 1510 void hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 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 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1518 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1519 hfp_connection->hf_send_chld_x = 1; 1520 hfp_connection->hf_send_chld_x_index = 20 + index; 1521 hfp_hf_run_for_context(hfp_connection); 1522 } 1523 } 1524 1525 void hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 1526 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1527 if (!hfp_connection) { 1528 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1529 return; 1530 } 1531 1532 hfp_connection->hf_initiate_outgoing_call = 1; 1533 snprintf(phone_number, sizeof(phone_number), "%s", number); 1534 hfp_hf_run_for_context(hfp_connection); 1535 } 1536 1537 void hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 1538 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1539 if (!hfp_connection) { 1540 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1541 return; 1542 } 1543 1544 hfp_connection->hf_initiate_memory_dialing = 1; 1545 hfp_connection->memory_id = memory_id; 1546 1547 hfp_hf_run_for_context(hfp_connection); 1548 } 1549 1550 void hfp_hf_redial_last_number(hci_con_handle_t acl_handle){ 1551 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1552 if (!hfp_connection) { 1553 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1554 return; 1555 } 1556 1557 hfp_connection->hf_initiate_redial_last_number = 1; 1558 hfp_hf_run_for_context(hfp_connection); 1559 } 1560 1561 void hfp_hf_activate_call_waiting_notification(hci_con_handle_t acl_handle){ 1562 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1563 if (!hfp_connection) { 1564 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1565 return; 1566 } 1567 1568 hfp_connection->hf_activate_call_waiting_notification = 1; 1569 hfp_hf_run_for_context(hfp_connection); 1570 } 1571 1572 1573 void hfp_hf_deactivate_call_waiting_notification(hci_con_handle_t acl_handle){ 1574 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1575 if (!hfp_connection) { 1576 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1577 return; 1578 } 1579 1580 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1581 hfp_hf_run_for_context(hfp_connection); 1582 } 1583 1584 1585 void hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1586 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1587 if (!hfp_connection) { 1588 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1589 return; 1590 } 1591 1592 hfp_connection->hf_activate_calling_line_notification = 1; 1593 hfp_hf_run_for_context(hfp_connection); 1594 } 1595 1596 void hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1597 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1598 if (!hfp_connection) { 1599 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1600 return; 1601 } 1602 1603 hfp_connection->hf_deactivate_calling_line_notification = 1; 1604 hfp_hf_run_for_context(hfp_connection); 1605 } 1606 1607 1608 void hfp_hf_activate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1609 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1610 if (!hfp_connection) { 1611 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1612 return; 1613 } 1614 1615 hfp_connection->hf_activate_echo_canceling_and_noise_reduction = 1; 1616 hfp_hf_run_for_context(hfp_connection); 1617 } 1618 1619 void hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1620 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1621 if (!hfp_connection) { 1622 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1623 return; 1624 } 1625 1626 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1627 hfp_hf_run_for_context(hfp_connection); 1628 } 1629 1630 void hfp_hf_activate_voice_recognition_notification(hci_con_handle_t acl_handle){ 1631 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1632 if (!hfp_connection) { 1633 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1634 return; 1635 } 1636 1637 hfp_connection->hf_activate_voice_recognition_notification = 1; 1638 hfp_hf_run_for_context(hfp_connection); 1639 } 1640 1641 void hfp_hf_deactivate_voice_recognition_notification(hci_con_handle_t acl_handle){ 1642 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1643 if (!hfp_connection) { 1644 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1645 return; 1646 } 1647 1648 hfp_connection->hf_deactivate_voice_recognition_notification = 1; 1649 hfp_hf_run_for_context(hfp_connection); 1650 } 1651 1652 void hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 1653 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1654 if (!hfp_connection) { 1655 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1656 return; 1657 } 1658 1659 if (hfp_connection->microphone_gain == gain) return; 1660 if ((gain < 0) || (gain > 15)){ 1661 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 1662 return; 1663 } 1664 hfp_connection->microphone_gain = gain; 1665 hfp_connection->send_microphone_gain = 1; 1666 hfp_hf_run_for_context(hfp_connection); 1667 } 1668 1669 void hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 1670 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1671 if (!hfp_connection) { 1672 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1673 return; 1674 } 1675 1676 if (hfp_connection->speaker_gain == gain) return; 1677 if ((gain < 0) || (gain > 15)){ 1678 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 1679 return; 1680 } 1681 hfp_connection->speaker_gain = gain; 1682 hfp_connection->send_speaker_gain = 1; 1683 hfp_hf_run_for_context(hfp_connection); 1684 } 1685 1686 void hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 1687 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1688 if (!hfp_connection) { 1689 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1690 return; 1691 } 1692 1693 hfp_connection->hf_send_dtmf_code = code; 1694 hfp_hf_run_for_context(hfp_connection); 1695 } 1696 1697 void hfp_hf_request_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 1698 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1699 if (!hfp_connection) { 1700 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1701 return; 1702 } 1703 hfp_connection->hf_send_binp = 1; 1704 hfp_hf_run_for_context(hfp_connection); 1705 } 1706 1707 void hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 1708 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1709 if (!hfp_connection) { 1710 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1711 return; 1712 } 1713 hfp_connection->hf_send_clcc = 1; 1714 hfp_hf_run_for_context(hfp_connection); 1715 } 1716 1717 1718 void hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 1719 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1720 if (!hfp_connection) { 1721 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1722 return; 1723 } 1724 hfp_connection->hf_send_rrh = 1; 1725 hfp_connection->hf_send_rrh_command = '?'; 1726 hfp_hf_run_for_context(hfp_connection); 1727 } 1728 1729 void hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 1730 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1731 if (!hfp_connection) { 1732 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1733 return; 1734 } 1735 hfp_connection->hf_send_rrh = 1; 1736 hfp_connection->hf_send_rrh_command = '0'; 1737 hfp_hf_run_for_context(hfp_connection); 1738 } 1739 1740 void hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 1741 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1742 if (!hfp_connection) { 1743 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1744 return; 1745 } 1746 hfp_connection->hf_send_rrh = 1; 1747 hfp_connection->hf_send_rrh_command = '1'; 1748 hfp_hf_run_for_context(hfp_connection); 1749 } 1750 1751 void hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 1752 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1753 if (!hfp_connection) { 1754 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1755 return; 1756 } 1757 hfp_connection->hf_send_rrh = 1; 1758 hfp_connection->hf_send_rrh_command = '2'; 1759 hfp_hf_run_for_context(hfp_connection); 1760 } 1761 1762 void hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 1763 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1764 if (!hfp_connection) { 1765 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1766 return; 1767 } 1768 hfp_connection->hf_send_cnum = 1; 1769 hfp_hf_run_for_context(hfp_connection); 1770 } 1771 1772 void hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 1773 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1774 if (!hfp_connection) { 1775 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1776 return; 1777 } 1778 // find index for assigned number 1779 int i; 1780 for (i = 0; i < hfp_indicators_nr ; i++){ 1781 if (hfp_indicators[i] == assigned_number){ 1782 // set value 1783 hfp_indicators_value[i] = value; 1784 // mark for update 1785 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 1786 hfp_connection->generic_status_update_bitmap |= (1<<i); 1787 // send update 1788 hfp_hf_run_for_context(hfp_connection); 1789 } 1790 return; 1791 } 1792 } 1793 } 1794 1795 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 1796 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1797 if (!hfp_connection) { 1798 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1799 return 0; 1800 } 1801 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 1802 } 1803 1804 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){ 1805 if (!name){ 1806 name = default_hfp_hf_service_name; 1807 } 1808 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 1809 1810 // Construct SupportedFeatures for SDP bitmap: 1811 // 1812 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 1813 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 1814 // 1815 // Wide band speech (bit 5) requires Codec negotiation 1816 // 1817 uint16_t sdp_features = supported_features & 0x1f; 1818 if (wide_band_speech && (supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION))){ 1819 sdp_features |= 1 << 5; 1820 } 1821 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 1822 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 1823 } 1824 1825 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 1826 if (callback == NULL){ 1827 log_error("hfp_hf_register_packet_handler called with NULL callback"); 1828 return; 1829 } 1830 hfp_hf_callback = callback; 1831 hfp_set_hf_callback(callback); 1832 } 1833