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(const hfp_connection_t * hfp_connection, uint8_t status){ 127 if (hfp_hf_callback == NULL) return; 128 uint8_t event[33]; 129 event[0] = HCI_EVENT_HFP_META; 130 event[1] = sizeof(event) - 2; 131 event[2] = HFP_SUBEVENT_SUBSCRIBER_NUMBER_INFORMATION; 132 little_endian_store_16(event, 3, hfp_connection->acl_handle); 133 event[5] = status; 134 event[6] = hfp_connection->bnip_type; 135 uint16_t size = btstack_min(strlen(hfp_connection->bnip_number), sizeof(event) - 8); 136 strncpy((char*)&event[7], hfp_connection->bnip_number, size); 137 event[7 + size] = 0; 138 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 139 } 140 141 static void hfp_hf_emit_type_and_number(const hfp_connection_t * hfp_connection, uint8_t event_subtype){ 142 if (hfp_hf_callback == NULL) return; 143 uint8_t event[32]; 144 event[0] = HCI_EVENT_HFP_META; 145 event[1] = sizeof(event) - 2; 146 event[2] = event_subtype; 147 little_endian_store_16(event, 3, hfp_connection->acl_handle); 148 event[5] = hfp_connection->bnip_type; 149 uint16_t size = btstack_min(strlen(hfp_connection->bnip_number), sizeof(event) - 7); 150 strncpy((char*)&event[6], hfp_connection->bnip_number, size); 151 event[6 + size] = 0; 152 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 153 } 154 155 static void hfp_hf_emit_enhanced_call_status(const hfp_connection_t * hfp_connection){ 156 if (hfp_hf_callback == NULL) return; 157 uint8_t event[38]; 158 int pos = 0; 159 event[pos++] = HCI_EVENT_HFP_META; 160 event[pos++] = sizeof(event) - 2; 161 event[pos++] = HFP_SUBEVENT_ENHANCED_CALL_STATUS; 162 little_endian_store_16(event, pos, hfp_connection->acl_handle); 163 pos += 2; 164 event[pos++] = hfp_connection->clcc_idx; 165 event[pos++] = hfp_connection->clcc_dir; 166 event[pos++] = hfp_connection->clcc_status; 167 event[pos++] = hfp_connection->clcc_mode; 168 event[pos++] = hfp_connection->clcc_mpty; 169 event[pos++] = hfp_connection->bnip_type; 170 uint16_t size = btstack_min(strlen(hfp_connection->bnip_number), sizeof(event) - pos - 1); 171 strncpy((char*)&event[pos], hfp_connection->bnip_number, size); 172 pos += size; 173 event[pos++] = 0; 174 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 175 } 176 177 178 static void hfp_emit_ag_indicator_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 179 if (hfp_hf_callback == NULL) return; 180 uint8_t event[12+HFP_MAX_INDICATOR_DESC_SIZE+1]; 181 int pos = 0; 182 event[pos++] = HCI_EVENT_HFP_META; 183 event[pos++] = sizeof(event) - 2; 184 event[pos++] = HFP_SUBEVENT_AG_INDICATOR_STATUS_CHANGED; 185 little_endian_store_16(event, pos, hfp_connection->acl_handle); 186 pos += 2; 187 event[pos++] = indicator->index; 188 event[pos++] = indicator->status; 189 event[pos++] = indicator->min_range; 190 event[pos++] = indicator->max_range; 191 event[pos++] = indicator->mandatory; 192 event[pos++] = indicator->enabled; 193 event[pos++] = indicator->status_changed; 194 strncpy((char*)&event[pos], indicator->name, HFP_MAX_INDICATOR_DESC_SIZE); 195 pos += HFP_MAX_INDICATOR_DESC_SIZE; 196 event[pos] = 0; 197 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 198 } 199 200 static void hfp_emit_network_operator_event(const hfp_connection_t * hfp_connection){ 201 if (hfp_hf_callback == NULL) return; 202 uint8_t event[7+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE+1]; 203 event[0] = HCI_EVENT_HFP_META; 204 event[1] = sizeof(event) - 2; 205 event[2] = HFP_SUBEVENT_NETWORK_OPERATOR_CHANGED; 206 little_endian_store_16(event, 3, hfp_connection->acl_handle); 207 event[5] = hfp_connection->network_operator.mode; 208 event[6] = hfp_connection->network_operator.format; 209 strncpy((char*)&event[7], hfp_connection->network_operator.name, HFP_MAX_NETWORK_OPERATOR_NAME_SIZE); 210 event[7+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE] = 0; 211 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 212 } 213 214 /* send commands */ 215 216 static inline int hfp_hf_send_cmd(uint16_t cid, const char * cmd){ 217 char buffer[20]; 218 snprintf(buffer, sizeof(buffer), "AT%s\r", cmd); 219 return send_str_over_rfcomm(cid, buffer); 220 } 221 222 static inline int hfp_hf_send_cmd_with_mark(uint16_t cid, const char * cmd, const char * mark){ 223 char buffer[20]; 224 snprintf(buffer, sizeof(buffer), "AT%s%s\r", cmd, mark); 225 return send_str_over_rfcomm(cid, buffer); 226 } 227 228 static inline int hfp_hf_send_cmd_with_int(uint16_t cid, const char * cmd, uint16_t value){ 229 char buffer[40]; 230 snprintf(buffer, sizeof(buffer), "AT%s=%d\r", cmd, value); 231 return send_str_over_rfcomm(cid, buffer); 232 } 233 234 static int hfp_hf_cmd_notify_on_codecs(uint16_t cid){ 235 char buffer[30]; 236 const int size = sizeof(buffer); 237 int offset = snprintf(buffer, size, "AT%s=", HFP_AVAILABLE_CODECS); 238 offset += join(buffer+offset, size-offset, hfp_codecs, hfp_codecs_nr); 239 offset += snprintf(buffer+offset, size-offset, "\r"); 240 return send_str_over_rfcomm(cid, buffer); 241 } 242 243 static int hfp_hf_cmd_activate_status_update_for_ag_indicator(uint16_t cid, uint32_t indicators_status, int indicators_nr){ 244 char buffer[50]; 245 const int size = sizeof(buffer); 246 int offset = snprintf(buffer, size, "AT%s=", HFP_UPDATE_ENABLE_STATUS_FOR_INDIVIDUAL_AG_INDICATORS); 247 offset += join_bitmap(buffer+offset, size-offset, indicators_status, indicators_nr); 248 offset += snprintf(buffer+offset, size-offset, "\r"); 249 return send_str_over_rfcomm(cid, buffer); 250 } 251 252 static int hfp_hf_cmd_list_supported_generic_status_indicators(uint16_t cid){ 253 char buffer[30]; 254 const int size = sizeof(buffer); 255 int offset = snprintf(buffer, size, "AT%s=", HFP_GENERIC_STATUS_INDICATOR); 256 offset += join(buffer+offset, size-offset, hfp_indicators, hfp_indicators_nr); 257 offset += snprintf(buffer+offset, size-offset, "\r"); 258 return send_str_over_rfcomm(cid, buffer); 259 } 260 261 static int hfp_hf_cmd_activate_status_update_for_all_ag_indicators(uint16_t cid, uint8_t activate){ 262 char buffer[20]; 263 snprintf(buffer, sizeof(buffer), "AT%s=3,0,0,%d\r", HFP_ENABLE_STATUS_UPDATE_FOR_AG_INDICATORS, activate); 264 return send_str_over_rfcomm(cid, buffer); 265 } 266 267 static int hfp_hf_initiate_outgoing_call_cmd(uint16_t cid){ 268 char buffer[40]; 269 snprintf(buffer, sizeof(buffer), "%s%s;\r", HFP_CALL_PHONE_NUMBER, phone_number); 270 return send_str_over_rfcomm(cid, buffer); 271 } 272 273 static int hfp_hf_send_memory_dial_cmd(uint16_t cid, int memory_id){ 274 char buffer[40]; 275 snprintf(buffer, sizeof(buffer), "%s>%d;\r", HFP_CALL_PHONE_NUMBER, memory_id); 276 return send_str_over_rfcomm(cid, buffer); 277 } 278 279 static int hfp_hf_send_chld(uint16_t cid, unsigned int number){ 280 char buffer[40]; 281 snprintf(buffer, sizeof(buffer), "AT%s=%u\r", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, number); 282 return send_str_over_rfcomm(cid, buffer); 283 } 284 285 static int hfp_hf_send_dtmf(uint16_t cid, char code){ 286 char buffer[20]; 287 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", HFP_TRANSMIT_DTMF_CODES, code); 288 return send_str_over_rfcomm(cid, buffer); 289 } 290 291 static int hfp_hf_cmd_ata(uint16_t cid){ 292 return send_str_over_rfcomm(cid, (char *) "ATA\r"); 293 } 294 295 static int hfp_hf_cmd_exchange_supported_features(uint16_t cid){ 296 return hfp_hf_send_cmd_with_int(cid, HFP_SUPPORTED_FEATURES, hfp_supported_features); 297 } 298 299 static int hfp_hf_cmd_retrieve_indicators(uint16_t cid){ 300 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "=?"); 301 } 302 303 static int hfp_hf_cmd_retrieve_indicators_status(uint16_t cid){ 304 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "?"); 305 } 306 307 static int hfp_hf_cmd_retrieve_can_hold_call(uint16_t cid){ 308 return hfp_hf_send_cmd_with_mark(cid, HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, "=?"); 309 } 310 311 static int hfp_hf_cmd_retrieve_supported_generic_status_indicators(uint16_t cid){ 312 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "=?"); 313 } 314 315 static int hfp_hf_cmd_list_initital_supported_generic_status_indicators(uint16_t cid){ 316 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "?"); 317 } 318 319 static int hfp_hf_cmd_query_operator_name_format(uint16_t cid){ 320 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "=3,0"); 321 } 322 323 static int hfp_hf_cmd_query_operator_name(uint16_t cid){ 324 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "?"); 325 } 326 327 static int hfp_hf_cmd_trigger_codec_connection_setup(uint16_t cid){ 328 return hfp_hf_send_cmd(cid, HFP_TRIGGER_CODEC_CONNECTION_SETUP); 329 } 330 331 static int hfp_hf_set_microphone_gain_cmd(uint16_t cid, int gain){ 332 return hfp_hf_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 333 } 334 335 static int hfp_hf_set_speaker_gain_cmd(uint16_t cid, int gain){ 336 return hfp_hf_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 337 } 338 339 static int hfp_hf_set_calling_line_notification_cmd(uint16_t cid, uint8_t activate){ 340 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CLIP, activate); 341 } 342 343 static int hfp_hf_set_echo_canceling_and_noise_reduction_cmd(uint16_t cid, uint8_t activate){ 344 return hfp_hf_send_cmd_with_int(cid, HFP_TURN_OFF_EC_AND_NR, activate); 345 } 346 347 static int hfp_hf_set_voice_recognition_notification_cmd(uint16_t cid, uint8_t activate){ 348 return hfp_hf_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate); 349 } 350 351 static int hfp_hf_set_call_waiting_notification_cmd(uint16_t cid, uint8_t activate){ 352 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CALL_WAITING_NOTIFICATION, activate); 353 } 354 355 static int hfp_hf_cmd_confirm_codec(uint16_t cid, uint8_t codec){ 356 return hfp_hf_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 357 } 358 359 static int hfp_hf_cmd_enable_extended_audio_gateway_error_report(uint16_t cid, uint8_t enable){ 360 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR, enable); 361 } 362 363 static int hfp_hf_send_redial_last_number_cmd(uint16_t cid){ 364 return hfp_hf_send_cmd(cid, HFP_REDIAL_LAST_NUMBER); 365 } 366 367 static int hfp_hf_send_chup(uint16_t cid){ 368 return hfp_hf_send_cmd(cid, HFP_HANG_UP_CALL); 369 } 370 371 static int hfp_hf_send_binp(uint16_t cid){ 372 return hfp_hf_send_cmd_with_mark(cid, HFP_PHONE_NUMBER_FOR_VOICE_TAG, "=1"); 373 } 374 375 static int hfp_hf_send_clcc(uint16_t cid){ 376 return hfp_hf_send_cmd(cid, HFP_LIST_CURRENT_CALLS); 377 } 378 379 /* state machines */ 380 381 static int hfp_hf_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 382 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 383 if (hfp_connection->ok_pending) return 0; 384 int done = 1; 385 386 switch (hfp_connection->state){ 387 case HFP_EXCHANGE_SUPPORTED_FEATURES: 388 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 389 hfp_connection->state = HFP_W4_EXCHANGE_SUPPORTED_FEATURES; 390 hfp_hf_cmd_exchange_supported_features(hfp_connection->rfcomm_cid); 391 break; 392 case HFP_NOTIFY_ON_CODECS: 393 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 394 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 395 break; 396 case HFP_RETRIEVE_INDICATORS: 397 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 398 hfp_hf_cmd_retrieve_indicators(hfp_connection->rfcomm_cid); 399 break; 400 case HFP_RETRIEVE_INDICATORS_STATUS: 401 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 402 hfp_hf_cmd_retrieve_indicators_status(hfp_connection->rfcomm_cid); 403 break; 404 case HFP_ENABLE_INDICATORS_STATUS_UPDATE: 405 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 406 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, 1); 407 break; 408 case HFP_RETRIEVE_CAN_HOLD_CALL: 409 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 410 hfp_hf_cmd_retrieve_can_hold_call(hfp_connection->rfcomm_cid); 411 break; 412 case HFP_LIST_GENERIC_STATUS_INDICATORS: 413 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 414 hfp_hf_cmd_list_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 415 break; 416 case HFP_RETRIEVE_GENERIC_STATUS_INDICATORS: 417 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 418 hfp_hf_cmd_retrieve_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 419 break; 420 case HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 421 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 422 hfp_hf_cmd_list_initital_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 423 break; 424 default: 425 done = 0; 426 break; 427 } 428 return done; 429 } 430 431 432 static int hfp_hf_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 433 if (hfp_connection->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 434 if (hfp_connection->ok_pending) return 0; 435 436 int done = 0; 437 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 438 hfp_connection->ok_pending = 1; 439 done = 1; 440 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, hfp_connection->enable_status_update_for_ag_indicators); 441 return done; 442 }; 443 if (hfp_connection->change_status_update_for_individual_ag_indicators){ 444 hfp_connection->ok_pending = 1; 445 done = 1; 446 hfp_hf_cmd_activate_status_update_for_ag_indicator(hfp_connection->rfcomm_cid, 447 hfp_connection->ag_indicators_status_update_bitmap, 448 hfp_connection->ag_indicators_nr); 449 return done; 450 } 451 452 switch (hfp_connection->hf_query_operator_state){ 453 case HFP_HF_QUERY_OPERATOR_SET_FORMAT: 454 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK; 455 hfp_connection->ok_pending = 1; 456 hfp_hf_cmd_query_operator_name_format(hfp_connection->rfcomm_cid); 457 return 1; 458 case HFP_HF_QUERY_OPERATOR_SEND_QUERY: 459 hfp_connection->hf_query_operator_state = HPF_HF_QUERY_OPERATOR_W4_RESULT; 460 hfp_connection->ok_pending = 1; 461 hfp_hf_cmd_query_operator_name(hfp_connection->rfcomm_cid); 462 return 1; 463 default: 464 break; 465 } 466 467 if (hfp_connection->enable_extended_audio_gateway_error_report){ 468 hfp_connection->ok_pending = 1; 469 done = 1; 470 hfp_hf_cmd_enable_extended_audio_gateway_error_report(hfp_connection->rfcomm_cid, hfp_connection->enable_extended_audio_gateway_error_report); 471 return done; 472 } 473 474 return done; 475 } 476 477 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 478 479 if (hfp_connection->ok_pending) return 0; 480 481 if (hfp_connection->trigger_codec_exchange){ 482 hfp_connection->trigger_codec_exchange = 0; 483 484 hfp_connection->ok_pending = 1; 485 hfp_hf_cmd_trigger_codec_connection_setup(hfp_connection->rfcomm_cid); 486 return 1; 487 } 488 489 if (hfp_connection->hf_send_codec_confirm){ 490 hfp_connection->hf_send_codec_confirm = false; 491 492 hfp_connection->ok_pending = 1; 493 hfp_hf_cmd_confirm_codec(hfp_connection->rfcomm_cid, hfp_connection->codec_confirmed); 494 return 1; 495 } 496 497 if (hfp_connection->hf_send_supported_codecs){ 498 hfp_connection->hf_send_supported_codecs = false; 499 500 hfp_connection->ok_pending = 1; 501 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 502 return 1; 503 } 504 505 return 0; 506 } 507 508 static int hfp_hf_run_for_audio_connection(hfp_connection_t * hfp_connection){ 509 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 510 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 511 512 if (hfp_connection->release_audio_connection){ 513 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 514 hfp_connection->release_audio_connection = 0; 515 gap_disconnect(hfp_connection->sco_handle); 516 return 1; 517 } 518 519 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 520 521 // run codecs exchange 522 int done = codecs_exchange_state_machine(hfp_connection); 523 if (done) return 1; 524 525 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 526 if (hfp_connection->establish_audio_connection){ 527 hfp_connection->state = HFP_W4_SCO_CONNECTED; 528 hfp_connection->establish_audio_connection = 0; 529 hfp_setup_synchronous_connection(hfp_connection); 530 return 1; 531 } 532 533 return 0; 534 } 535 536 537 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 538 539 if (hfp_connection->ok_pending) return 0; 540 541 if (hfp_connection->hf_answer_incoming_call){ 542 hfp_hf_cmd_ata(hfp_connection->rfcomm_cid); 543 hfp_connection->hf_answer_incoming_call = 0; 544 return 1; 545 } 546 return 0; 547 } 548 549 static void hfp_hf_run_for_context(hfp_connection_t * hfp_connection){ 550 551 btstack_assert(hfp_connection != NULL); 552 btstack_assert(hfp_connection->local_role == HFP_ROLE_HF); 553 554 // during SDP query, RFCOMM CID is not set 555 if (hfp_connection->rfcomm_cid == 0) return; 556 557 // assert command could be sent 558 if (hci_can_send_command_packet_now() == 0) return; 559 560 #ifdef ENABLE_CC256X_ASSISTED_HFP 561 // WBS Disassociate 562 if (hfp_connection->cc256x_send_wbs_disassociate){ 563 hfp_connection->cc256x_send_wbs_disassociate = false; 564 hci_send_cmd(&hci_ti_wbs_disassociate); 565 return; 566 } 567 // Write Codec Config 568 if (hfp_connection->cc256x_send_write_codec_config){ 569 hfp_connection->cc256x_send_write_codec_config = false; 570 hfp_cc256x_write_codec_config(hfp_connection); 571 return; 572 } 573 // WBS Associate 574 if (hfp_connection->cc256x_send_wbs_associate){ 575 hfp_connection->cc256x_send_wbs_associate = false; 576 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 577 return; 578 } 579 #endif 580 #ifdef ENABLE_BCM_PCM_WBS 581 // Enable WBS 582 if (hfp_connection->bcm_send_enable_wbs){ 583 hfp_connection->bcm_send_enable_wbs = false; 584 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 585 return; 586 } 587 // Write I2S/PCM params 588 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 589 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 590 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 591 return; 592 } 593 // Disable WBS 594 if (hfp_connection->bcm_send_disable_wbs){ 595 hfp_connection->bcm_send_disable_wbs = false; 596 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 597 return; 598 } 599 #endif 600 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 601 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 602 hfp_finalize_connection_context(hfp_connection); 603 return; 604 } 605 #endif 606 607 if (hfp_connection->hf_accept_sco){ 608 609 bool eSCO = hfp_connection->hf_accept_sco == 2; 610 hfp_connection->hf_accept_sco = 0; 611 612 // notify about codec selection if not done already 613 if (hfp_connection->negotiated_codec == 0){ 614 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 615 } 616 617 // remote supported feature eSCO is set if link type is eSCO 618 // eSCO: S4 - max latency == transmission interval = 0x000c == 12 ms, 619 uint16_t max_latency; 620 uint8_t retransmission_effort; 621 uint16_t packet_types; 622 623 if (eSCO && hci_extended_sco_link_supported() && hci_remote_esco_supported(hfp_connection->acl_handle)){ 624 max_latency = 0x000c; 625 retransmission_effort = 0x02; 626 // eSCO: EV3 and 2-EV3 627 packet_types = 0x0048; 628 } else { 629 max_latency = 0xffff; 630 retransmission_effort = 0xff; 631 // sco: HV1 and HV3 632 packet_types = 0x005; 633 } 634 635 // mSBC only allows for transparent data 636 uint16_t sco_voice_setting = hci_get_sco_voice_setting(); 637 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){ 638 #ifdef ENABLE_BCM_PCM_WBS 639 sco_voice_setting = 0x0063; // Transparent data, 16-bit for BCM controllers 640 #else 641 sco_voice_setting = 0x0043; // Transparent data, 8-bit otherwise 642 #endif 643 } 644 645 // filter packet types 646 packet_types &= hfp_get_sco_packet_types(); 647 648 // bits 6-9 are 'don't allow' 649 packet_types ^= 0x3c0; 650 651 log_info("HFP: sending hci_accept_connection_request, packet types 0x%04x, sco_voice_setting 0x%02x", packet_types, sco_voice_setting); 652 hci_send_cmd(&hci_accept_synchronous_connection, hfp_connection->remote_addr, 8000, 8000, max_latency, 653 sco_voice_setting, retransmission_effort, packet_types); 654 return; 655 } 656 657 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 658 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 659 return; 660 } 661 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection); 662 if (!done){ 663 done = hfp_hf_run_for_context_service_level_connection_queries(hfp_connection); 664 } 665 if (!done){ 666 done = hfp_hf_run_for_audio_connection(hfp_connection); 667 } 668 if (!done){ 669 done = call_setup_state_machine(hfp_connection); 670 } 671 672 // don't send a new command while ok still pending 673 if (hfp_connection->ok_pending) return; 674 675 if (hfp_connection->send_microphone_gain){ 676 hfp_connection->send_microphone_gain = 0; 677 hfp_connection->ok_pending = 1; 678 hfp_hf_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 679 return; 680 } 681 682 if (hfp_connection->send_speaker_gain){ 683 hfp_connection->send_speaker_gain = 0; 684 hfp_connection->ok_pending = 1; 685 hfp_hf_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 686 return; 687 } 688 689 if (hfp_connection->hf_deactivate_calling_line_notification){ 690 hfp_connection->hf_deactivate_calling_line_notification = 0; 691 hfp_connection->ok_pending = 1; 692 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 0); 693 return; 694 } 695 696 if (hfp_connection->hf_activate_calling_line_notification){ 697 hfp_connection->hf_activate_calling_line_notification = 0; 698 hfp_connection->ok_pending = 1; 699 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 1); 700 return; 701 } 702 703 if (hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction){ 704 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 0; 705 hfp_connection->ok_pending = 1; 706 hfp_hf_set_echo_canceling_and_noise_reduction_cmd(hfp_connection->rfcomm_cid, 0); 707 return; 708 } 709 710 if (hfp_connection->hf_activate_echo_canceling_and_noise_reduction){ 711 hfp_connection->hf_activate_echo_canceling_and_noise_reduction = 0; 712 hfp_connection->ok_pending = 1; 713 hfp_hf_set_echo_canceling_and_noise_reduction_cmd(hfp_connection->rfcomm_cid, 1); 714 return; 715 } 716 717 if (hfp_connection->hf_deactivate_voice_recognition_notification){ 718 hfp_connection->hf_deactivate_voice_recognition_notification = 0; 719 hfp_connection->ok_pending = 1; 720 hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 0); 721 return; 722 } 723 724 if (hfp_connection->hf_activate_voice_recognition_notification){ 725 hfp_connection->hf_activate_voice_recognition_notification = 0; 726 hfp_connection->ok_pending = 1; 727 hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 1); 728 return; 729 } 730 731 732 if (hfp_connection->hf_deactivate_call_waiting_notification){ 733 hfp_connection->hf_deactivate_call_waiting_notification = 0; 734 hfp_connection->ok_pending = 1; 735 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 0); 736 return; 737 } 738 739 if (hfp_connection->hf_activate_call_waiting_notification){ 740 hfp_connection->hf_activate_call_waiting_notification = 0; 741 hfp_connection->ok_pending = 1; 742 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 1); 743 return; 744 } 745 746 if (hfp_connection->hf_initiate_outgoing_call){ 747 hfp_connection->hf_initiate_outgoing_call = 0; 748 hfp_connection->ok_pending = 1; 749 hfp_hf_initiate_outgoing_call_cmd(hfp_connection->rfcomm_cid); 750 return; 751 } 752 753 if (hfp_connection->hf_initiate_memory_dialing){ 754 hfp_connection->hf_initiate_memory_dialing = 0; 755 hfp_connection->ok_pending = 1; 756 hfp_hf_send_memory_dial_cmd(hfp_connection->rfcomm_cid, hfp_connection->memory_id); 757 return; 758 } 759 760 if (hfp_connection->hf_initiate_redial_last_number){ 761 hfp_connection->hf_initiate_redial_last_number = 0; 762 hfp_connection->ok_pending = 1; 763 hfp_hf_send_redial_last_number_cmd(hfp_connection->rfcomm_cid); 764 return; 765 } 766 767 if (hfp_connection->hf_send_chup){ 768 hfp_connection->hf_send_chup = 0; 769 hfp_connection->ok_pending = 1; 770 hfp_hf_send_chup(hfp_connection->rfcomm_cid); 771 return; 772 } 773 774 if (hfp_connection->hf_send_chld_0){ 775 hfp_connection->hf_send_chld_0 = 0; 776 hfp_connection->ok_pending = 1; 777 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 0); 778 return; 779 } 780 781 if (hfp_connection->hf_send_chld_1){ 782 hfp_connection->hf_send_chld_1 = 0; 783 hfp_connection->ok_pending = 1; 784 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 1); 785 return; 786 } 787 788 if (hfp_connection->hf_send_chld_2){ 789 hfp_connection->hf_send_chld_2 = 0; 790 hfp_connection->ok_pending = 1; 791 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 2); 792 return; 793 } 794 795 if (hfp_connection->hf_send_chld_3){ 796 hfp_connection->hf_send_chld_3 = 0; 797 hfp_connection->ok_pending = 1; 798 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 3); 799 return; 800 } 801 802 if (hfp_connection->hf_send_chld_4){ 803 hfp_connection->hf_send_chld_4 = 0; 804 hfp_connection->ok_pending = 1; 805 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 4); 806 return; 807 } 808 809 if (hfp_connection->hf_send_chld_x){ 810 hfp_connection->hf_send_chld_x = 0; 811 hfp_connection->ok_pending = 1; 812 hfp_hf_send_chld(hfp_connection->rfcomm_cid, hfp_connection->hf_send_chld_x_index); 813 return; 814 } 815 816 if (hfp_connection->hf_send_dtmf_code){ 817 char code = hfp_connection->hf_send_dtmf_code; 818 hfp_connection->hf_send_dtmf_code = 0; 819 hfp_connection->ok_pending = 1; 820 hfp_hf_send_dtmf(hfp_connection->rfcomm_cid, code); 821 return; 822 } 823 824 if (hfp_connection->hf_send_binp){ 825 hfp_connection->hf_send_binp = 0; 826 hfp_connection->ok_pending = 1; 827 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 828 return; 829 } 830 831 if (hfp_connection->hf_send_clcc){ 832 hfp_connection->hf_send_clcc = 0; 833 hfp_connection->ok_pending = 1; 834 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 835 return; 836 } 837 838 if (hfp_connection->hf_send_rrh){ 839 hfp_connection->hf_send_rrh = 0; 840 char buffer[20]; 841 switch (hfp_connection->hf_send_rrh_command){ 842 case '?': 843 snprintf(buffer, sizeof(buffer), "AT%s?\r", 844 HFP_RESPONSE_AND_HOLD); 845 buffer[sizeof(buffer) - 1] = 0; 846 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 847 return; 848 case '0': 849 case '1': 850 case '2': 851 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", 852 HFP_RESPONSE_AND_HOLD, 853 hfp_connection->hf_send_rrh_command); 854 buffer[sizeof(buffer) - 1] = 0; 855 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 856 return; 857 default: 858 break; 859 } 860 return; 861 } 862 863 if (hfp_connection->hf_send_cnum){ 864 hfp_connection->hf_send_cnum = 0; 865 char buffer[20]; 866 snprintf(buffer, sizeof(buffer), "AT%s\r", 867 HFP_SUBSCRIBER_NUMBER_INFORMATION); 868 buffer[sizeof(buffer) - 1] = 0; 869 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 870 return; 871 } 872 873 // update HF indicators 874 if (hfp_connection->generic_status_update_bitmap){ 875 int i; 876 for (i=0;i<hfp_indicators_nr;i++){ 877 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 878 if (hfp_connection->generic_status_indicators[i].state){ 879 hfp_connection->ok_pending = 1; 880 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 881 char buffer[30]; 882 snprintf(buffer, sizeof(buffer), "AT%s=%u,%u\r", 883 HFP_TRANSFER_HF_INDICATOR_STATUS, 884 hfp_indicators[i], 885 (unsigned int)hfp_indicators_value[i]); 886 buffer[sizeof(buffer) - 1] = 0; 887 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 888 } else { 889 log_info("Not sending HF indicator %u as it is disabled", hfp_indicators[i]); 890 } 891 return; 892 } 893 } 894 } 895 896 if (done) return; 897 // deal with disconnect 898 switch (hfp_connection->state){ 899 case HFP_W2_DISCONNECT_RFCOMM: 900 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 901 rfcomm_disconnect(hfp_connection->rfcomm_cid); 902 break; 903 904 default: 905 break; 906 } 907 } 908 909 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 910 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 911 912 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 913 914 // restore volume settings 915 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 916 hfp_connection->send_speaker_gain = 1; 917 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 918 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 919 hfp_connection->send_microphone_gain = 1; 920 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 921 // enable all indicators 922 int i; 923 for (i=0;i<hfp_indicators_nr;i++){ 924 hfp_connection->generic_status_indicators[i].uuid = hfp_indicators[i]; 925 hfp_connection->generic_status_indicators[i].state = 1; 926 } 927 } 928 929 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 930 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_codecs_nr, hfp_codecs)){ 931 // Codec supported, confirm 932 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 933 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 934 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 935 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 936 937 hfp_connection->hf_send_codec_confirm = true; 938 } else { 939 // Codec not supported, send supported codecs 940 hfp_connection->codec_confirmed = 0; 941 hfp_connection->suggested_codec = 0; 942 hfp_connection->negotiated_codec = 0; 943 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 944 945 hfp_connection->hf_send_supported_codecs = true; 946 } 947 } 948 949 static void hfp_hf_switch_on_ok(hfp_connection_t *hfp_connection){ 950 hfp_connection->ok_pending = 0; 951 switch (hfp_connection->state){ 952 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 953 if (has_codec_negotiation_feature(hfp_connection)){ 954 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 955 break; 956 } 957 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 958 break; 959 960 case HFP_W4_NOTIFY_ON_CODECS: 961 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 962 break; 963 964 case HFP_W4_RETRIEVE_INDICATORS: 965 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 966 break; 967 968 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 969 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 970 break; 971 972 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 973 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 974 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 975 break; 976 } 977 if (has_hf_indicators_feature(hfp_connection)){ 978 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 979 break; 980 } 981 hfp_ag_slc_established(hfp_connection); 982 break; 983 984 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 985 if (has_hf_indicators_feature(hfp_connection)){ 986 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 987 break; 988 } 989 hfp_ag_slc_established(hfp_connection); 990 break; 991 992 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 993 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 994 break; 995 996 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 997 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 998 break; 999 1000 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 1001 hfp_ag_slc_established(hfp_connection); 1002 break; 1003 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1004 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 1005 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 1006 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1007 break; 1008 } 1009 1010 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 1011 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 1012 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1013 break; 1014 } 1015 1016 switch (hfp_connection->hf_query_operator_state){ 1017 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 1018 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1019 break; 1020 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 1021 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 1022 hfp_emit_network_operator_event(hfp_connection); 1023 break; 1024 default: 1025 break; 1026 } 1027 1028 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1029 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1030 break; 1031 } 1032 1033 switch (hfp_connection->codecs_state){ 1034 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1035 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1036 break; 1037 case HFP_CODECS_HF_CONFIRMED_CODEC: 1038 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1039 break; 1040 default: 1041 break; 1042 } 1043 break; 1044 default: 1045 break; 1046 } 1047 1048 // done 1049 hfp_connection->command = HFP_CMD_NONE; 1050 } 1051 1052 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1053 uint16_t i; 1054 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1055 if (hfp_connection->ag_indicators[i].status_changed) { 1056 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1057 hfp_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1058 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1059 hfp_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1060 // avoid set but not used warning 1061 (void) hfp_callheld_status; 1062 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1063 hfp_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1064 } 1065 hfp_connection->ag_indicators[i].status_changed = 0; 1066 hfp_emit_ag_indicator_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1067 break; 1068 } 1069 } 1070 } 1071 1072 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1073 int value; 1074 int i; 1075 switch (hfp_connection->command){ 1076 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1077 hfp_connection->command = HFP_CMD_NONE; 1078 hfp_hf_emit_subscriber_information(hfp_connection, 0); 1079 break; 1080 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1081 hfp_connection->command = HFP_CMD_NONE; 1082 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1083 break; 1084 case HFP_CMD_LIST_CURRENT_CALLS: 1085 hfp_connection->command = HFP_CMD_NONE; 1086 hfp_hf_emit_enhanced_call_status(hfp_connection); 1087 break; 1088 case HFP_CMD_SET_SPEAKER_GAIN: 1089 hfp_connection->command = HFP_CMD_NONE; 1090 value = btstack_atoi((char*)hfp_connection->line_buffer); 1091 hfp_hf_speaker_gain = value; 1092 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1093 break; 1094 case HFP_CMD_SET_MICROPHONE_GAIN: 1095 hfp_connection->command = HFP_CMD_NONE; 1096 value = btstack_atoi((char*)hfp_connection->line_buffer); 1097 hfp_hf_microphone_gain = value; 1098 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1099 break; 1100 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1101 hfp_connection->command = HFP_CMD_NONE; 1102 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1103 break; 1104 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1105 hfp_connection->command = HFP_CMD_NONE; 1106 hfp_hf_emit_type_and_number(hfp_connection, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION); 1107 break; 1108 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1109 hfp_connection->command = HFP_CMD_NONE; 1110 hfp_hf_emit_type_and_number(hfp_connection, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION); 1111 break; 1112 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1113 hfp_connection->command = HFP_CMD_NONE; 1114 hfp_connection->ok_pending = 0; 1115 hfp_connection->extended_audio_gateway_error = 0; 1116 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1117 break; 1118 case HFP_CMD_ERROR: 1119 hfp_connection->command = HFP_CMD_NONE; 1120 hfp_connection->ok_pending = 0; 1121 hfp_reset_context_flags(hfp_connection); 1122 switch (hfp_connection->state){ 1123 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1124 switch (hfp_connection->codecs_state){ 1125 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1126 hfp_emit_sco_event(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 0, hfp_connection->remote_addr, hfp_connection->negotiated_codec); 1127 return; 1128 default: 1129 break; 1130 } 1131 default: 1132 break; 1133 } 1134 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 1); 1135 break; 1136 case HFP_CMD_OK: 1137 hfp_hf_switch_on_ok(hfp_connection); 1138 break; 1139 case HFP_CMD_RING: 1140 hfp_connection->command = HFP_CMD_NONE; 1141 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1142 break; 1143 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1144 hfp_connection->command = HFP_CMD_NONE; 1145 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1146 break; 1147 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1148 hfp_connection->command = HFP_CMD_NONE; 1149 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1150 hfp_emit_ag_indicator_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1151 } 1152 break; 1153 case HFP_CMD_AG_SUGGESTED_CODEC: 1154 hfp_connection->command = HFP_CMD_NONE; 1155 hfp_hf_handle_suggested_codec(hfp_connection); 1156 break; 1157 default: 1158 break; 1159 } 1160 } 1161 1162 static int hfp_parser_is_end_of_line(uint8_t byte){ 1163 return (byte == '\n') || (byte == '\r'); 1164 } 1165 1166 static void hfp_hf_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1167 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1168 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1169 if (size < 1) return; 1170 1171 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1172 if (!hfp_connection) return; 1173 1174 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1175 #ifdef ENABLE_HFP_AT_MESSAGES 1176 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1177 #endif 1178 1179 // process messages byte-wise 1180 int pos; 1181 for (pos = 0; pos < size; pos++){ 1182 hfp_parse(hfp_connection, packet[pos], 1); 1183 1184 // parse until end of line "\r" or "\n" 1185 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1186 1187 hfp_hf_handle_rfcomm_command(hfp_connection); 1188 } 1189 hfp_hf_run_for_context(hfp_connection); 1190 } 1191 1192 static void hfp_hf_run(void){ 1193 btstack_linked_list_iterator_t it; 1194 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1195 while (btstack_linked_list_iterator_has_next(&it)){ 1196 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1197 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1198 hfp_hf_run_for_context(hfp_connection); 1199 } 1200 } 1201 1202 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1203 switch (packet_type){ 1204 case RFCOMM_DATA_PACKET: 1205 hfp_hf_handle_rfcomm_data(packet_type, channel, packet, size); 1206 break; 1207 case HCI_EVENT_PACKET: 1208 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1209 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1210 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1211 return; 1212 } 1213 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1214 break; 1215 default: 1216 break; 1217 } 1218 hfp_hf_run(); 1219 } 1220 1221 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1222 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1223 hfp_hf_run(); 1224 } 1225 1226 void hfp_hf_init(uint16_t rfcomm_channel_nr){ 1227 hfp_init(); 1228 hfp_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1229 hfp_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1230 hfp_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1231 hfp_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1232 hfp_codecs_nr = 0; 1233 hfp_hf_speaker_gain = 9; 1234 hfp_hf_microphone_gain = 9; 1235 hfp_indicators_nr = 0; 1236 hfp_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1237 1238 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1239 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1240 1241 rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1242 1243 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1244 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1245 } 1246 1247 void hfp_hf_deinit(void){ 1248 hfp_deinit(); 1249 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1250 (void) memset(&hfp_hf_callback, 0, sizeof(btstack_packet_handler_t)); 1251 (void) memset(phone_number, 0, sizeof(phone_number)); 1252 } 1253 1254 void hfp_hf_init_codecs(int codecs_nr, const uint8_t * codecs){ 1255 if (codecs_nr > HFP_MAX_NUM_CODECS){ 1256 log_error("hfp_hf_init_codecs: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 1257 return; 1258 } 1259 1260 hfp_codecs_nr = codecs_nr; 1261 int i; 1262 for (i=0; i<codecs_nr; i++){ 1263 hfp_codecs[i] = codecs[i]; 1264 } 1265 } 1266 1267 void hfp_hf_init_supported_features(uint32_t supported_features){ 1268 hfp_supported_features = supported_features; 1269 } 1270 1271 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1272 hfp_indicators_nr = indicators_nr; 1273 int i; 1274 for (i = 0; i < hfp_indicators_nr ; i++){ 1275 hfp_indicators[i] = indicators[i]; 1276 } 1277 } 1278 1279 void hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1280 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1281 } 1282 1283 void hfp_hf_release_service_level_connection(hci_con_handle_t acl_handle){ 1284 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1285 if (!hfp_connection) { 1286 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1287 return; 1288 } 1289 hfp_release_service_level_connection(hfp_connection); 1290 hfp_hf_run_for_context(hfp_connection); 1291 } 1292 1293 static void hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1294 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1295 if (!hfp_connection) { 1296 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1297 return; 1298 } 1299 hfp_connection->enable_status_update_for_ag_indicators = enable; 1300 hfp_hf_run_for_context(hfp_connection); 1301 } 1302 1303 void hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1304 hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1305 } 1306 1307 void hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1308 hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1309 } 1310 1311 // TODO: returned ERROR - wrong format 1312 void hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1313 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1314 if (!hfp_connection) { 1315 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1316 return; 1317 } 1318 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1319 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1320 hfp_hf_run_for_context(hfp_connection); 1321 } 1322 1323 void hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1324 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1325 if (!hfp_connection) { 1326 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1327 return; 1328 } 1329 switch (hfp_connection->hf_query_operator_state){ 1330 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1331 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1332 break; 1333 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1334 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1335 break; 1336 default: 1337 break; 1338 } 1339 hfp_hf_run_for_context(hfp_connection); 1340 } 1341 1342 static void hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1343 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1344 if (!hfp_connection) { 1345 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1346 return; 1347 } 1348 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1349 hfp_hf_run_for_context(hfp_connection); 1350 } 1351 1352 1353 void hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1354 hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1355 } 1356 1357 void hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1358 hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1359 } 1360 1361 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1362 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_HFSF_ESCO_S4)); 1363 } 1364 1365 void hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1366 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1367 if (!hfp_connection) { 1368 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1369 return; 1370 } 1371 hfp_connection->establish_audio_connection = 0; 1372 1373 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 1374 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 1375 1376 hfp_connection->trigger_codec_exchange = 0; 1377 hfp_connection->establish_audio_connection = 1; 1378 if (!has_codec_negotiation_feature(hfp_connection)){ 1379 log_info("no codec negotiation feature, using NBS"); 1380 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1381 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1382 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1383 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1384 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1385 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1386 } else { 1387 switch (hfp_connection->codecs_state){ 1388 case HFP_CODECS_W4_AG_COMMON_CODEC: 1389 break; 1390 default: 1391 hfp_connection->codec_confirmed = 0; 1392 hfp_connection->suggested_codec = 0; 1393 hfp_connection->negotiated_codec = 0; 1394 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1395 hfp_connection->trigger_codec_exchange = 1; 1396 break; 1397 } 1398 } 1399 1400 hfp_hf_run_for_context(hfp_connection); 1401 } 1402 1403 void hfp_hf_release_audio_connection(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_release_audio_connection(hfp_connection); 1410 hfp_hf_run_for_context(hfp_connection); 1411 } 1412 1413 void hfp_hf_answer_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_answer_incoming_call = 1; 1422 hfp_hf_run_for_context(hfp_connection); 1423 } else { 1424 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_callsetup_status); 1425 } 1426 } 1427 1428 void hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1429 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1430 if (!hfp_connection) { 1431 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1432 return; 1433 } 1434 hfp_connection->hf_send_chup = 1; 1435 hfp_hf_run_for_context(hfp_connection); 1436 } 1437 1438 void hfp_hf_reject_incoming_call(hci_con_handle_t acl_handle){ 1439 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1440 if (!hfp_connection) { 1441 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1442 return; 1443 } 1444 1445 if (hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1446 hfp_connection->hf_send_chup = 1; 1447 hfp_hf_run_for_context(hfp_connection); 1448 } 1449 } 1450 1451 void hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1452 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1453 if (!hfp_connection) { 1454 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1455 return; 1456 } 1457 1458 if (hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1459 hfp_connection->hf_send_chld_0 = 1; 1460 hfp_hf_run_for_context(hfp_connection); 1461 } 1462 } 1463 1464 void hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1465 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1466 if (!hfp_connection) { 1467 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1468 return; 1469 } 1470 1471 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1472 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1473 hfp_connection->hf_send_chld_1 = 1; 1474 hfp_hf_run_for_context(hfp_connection); 1475 } 1476 } 1477 1478 void hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1479 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1480 if (!hfp_connection) { 1481 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1482 return; 1483 } 1484 1485 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1486 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1487 hfp_connection->hf_send_chld_2 = 1; 1488 hfp_hf_run_for_context(hfp_connection); 1489 } 1490 } 1491 1492 void hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1493 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1494 if (!hfp_connection) { 1495 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1496 return; 1497 } 1498 1499 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1500 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1501 hfp_connection->hf_send_chld_3 = 1; 1502 hfp_hf_run_for_context(hfp_connection); 1503 } 1504 } 1505 1506 void hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1507 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1508 if (!hfp_connection) { 1509 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1510 return; 1511 } 1512 1513 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1514 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1515 hfp_connection->hf_send_chld_4 = 1; 1516 hfp_hf_run_for_context(hfp_connection); 1517 } 1518 } 1519 1520 void hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1521 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1522 if (!hfp_connection) { 1523 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1524 return; 1525 } 1526 1527 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1528 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1529 hfp_connection->hf_send_chld_x = 1; 1530 hfp_connection->hf_send_chld_x_index = 10 + index; 1531 hfp_hf_run_for_context(hfp_connection); 1532 } 1533 } 1534 1535 void hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 1536 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1537 if (!hfp_connection) { 1538 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1539 return; 1540 } 1541 1542 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1543 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1544 hfp_connection->hf_send_chld_x = 1; 1545 hfp_connection->hf_send_chld_x_index = 20 + index; 1546 hfp_hf_run_for_context(hfp_connection); 1547 } 1548 } 1549 1550 void hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 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_outgoing_call = 1; 1558 snprintf(phone_number, sizeof(phone_number), "%s", number); 1559 hfp_hf_run_for_context(hfp_connection); 1560 } 1561 1562 void hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 1563 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1564 if (!hfp_connection) { 1565 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1566 return; 1567 } 1568 1569 hfp_connection->hf_initiate_memory_dialing = 1; 1570 hfp_connection->memory_id = memory_id; 1571 1572 hfp_hf_run_for_context(hfp_connection); 1573 } 1574 1575 void hfp_hf_redial_last_number(hci_con_handle_t acl_handle){ 1576 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1577 if (!hfp_connection) { 1578 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1579 return; 1580 } 1581 1582 hfp_connection->hf_initiate_redial_last_number = 1; 1583 hfp_hf_run_for_context(hfp_connection); 1584 } 1585 1586 void hfp_hf_activate_call_waiting_notification(hci_con_handle_t acl_handle){ 1587 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1588 if (!hfp_connection) { 1589 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1590 return; 1591 } 1592 1593 hfp_connection->hf_activate_call_waiting_notification = 1; 1594 hfp_hf_run_for_context(hfp_connection); 1595 } 1596 1597 1598 void hfp_hf_deactivate_call_waiting_notification(hci_con_handle_t acl_handle){ 1599 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1600 if (!hfp_connection) { 1601 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1602 return; 1603 } 1604 1605 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1606 hfp_hf_run_for_context(hfp_connection); 1607 } 1608 1609 1610 void hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1611 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1612 if (!hfp_connection) { 1613 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1614 return; 1615 } 1616 1617 hfp_connection->hf_activate_calling_line_notification = 1; 1618 hfp_hf_run_for_context(hfp_connection); 1619 } 1620 1621 void hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1622 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1623 if (!hfp_connection) { 1624 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1625 return; 1626 } 1627 1628 hfp_connection->hf_deactivate_calling_line_notification = 1; 1629 hfp_hf_run_for_context(hfp_connection); 1630 } 1631 1632 1633 void hfp_hf_activate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1634 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1635 if (!hfp_connection) { 1636 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1637 return; 1638 } 1639 1640 hfp_connection->hf_activate_echo_canceling_and_noise_reduction = 1; 1641 hfp_hf_run_for_context(hfp_connection); 1642 } 1643 1644 void hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1645 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1646 if (!hfp_connection) { 1647 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1648 return; 1649 } 1650 1651 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1652 hfp_hf_run_for_context(hfp_connection); 1653 } 1654 1655 void hfp_hf_activate_voice_recognition_notification(hci_con_handle_t acl_handle){ 1656 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1657 if (!hfp_connection) { 1658 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1659 return; 1660 } 1661 1662 hfp_connection->hf_activate_voice_recognition_notification = 1; 1663 hfp_hf_run_for_context(hfp_connection); 1664 } 1665 1666 void hfp_hf_deactivate_voice_recognition_notification(hci_con_handle_t acl_handle){ 1667 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1668 if (!hfp_connection) { 1669 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1670 return; 1671 } 1672 1673 hfp_connection->hf_deactivate_voice_recognition_notification = 1; 1674 hfp_hf_run_for_context(hfp_connection); 1675 } 1676 1677 void hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 1678 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1679 if (!hfp_connection) { 1680 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1681 return; 1682 } 1683 1684 if (hfp_connection->microphone_gain == gain) return; 1685 if ((gain < 0) || (gain > 15)){ 1686 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 1687 return; 1688 } 1689 hfp_connection->microphone_gain = gain; 1690 hfp_connection->send_microphone_gain = 1; 1691 hfp_hf_run_for_context(hfp_connection); 1692 } 1693 1694 void hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 1695 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1696 if (!hfp_connection) { 1697 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1698 return; 1699 } 1700 1701 if (hfp_connection->speaker_gain == gain) return; 1702 if ((gain < 0) || (gain > 15)){ 1703 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 1704 return; 1705 } 1706 hfp_connection->speaker_gain = gain; 1707 hfp_connection->send_speaker_gain = 1; 1708 hfp_hf_run_for_context(hfp_connection); 1709 } 1710 1711 void hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 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 1718 hfp_connection->hf_send_dtmf_code = code; 1719 hfp_hf_run_for_context(hfp_connection); 1720 } 1721 1722 void hfp_hf_request_phone_number_for_voice_tag(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_binp = 1; 1729 hfp_hf_run_for_context(hfp_connection); 1730 } 1731 1732 void hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 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 hfp_connection->hf_send_clcc = 1; 1739 hfp_hf_run_for_context(hfp_connection); 1740 } 1741 1742 1743 void hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 1744 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1745 if (!hfp_connection) { 1746 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1747 return; 1748 } 1749 hfp_connection->hf_send_rrh = 1; 1750 hfp_connection->hf_send_rrh_command = '?'; 1751 hfp_hf_run_for_context(hfp_connection); 1752 } 1753 1754 void hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 1755 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1756 if (!hfp_connection) { 1757 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1758 return; 1759 } 1760 hfp_connection->hf_send_rrh = 1; 1761 hfp_connection->hf_send_rrh_command = '0'; 1762 hfp_hf_run_for_context(hfp_connection); 1763 } 1764 1765 void hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 1766 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1767 if (!hfp_connection) { 1768 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1769 return; 1770 } 1771 hfp_connection->hf_send_rrh = 1; 1772 hfp_connection->hf_send_rrh_command = '1'; 1773 hfp_hf_run_for_context(hfp_connection); 1774 } 1775 1776 void hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 1777 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1778 if (!hfp_connection) { 1779 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1780 return; 1781 } 1782 hfp_connection->hf_send_rrh = 1; 1783 hfp_connection->hf_send_rrh_command = '2'; 1784 hfp_hf_run_for_context(hfp_connection); 1785 } 1786 1787 void hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 1788 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1789 if (!hfp_connection) { 1790 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1791 return; 1792 } 1793 hfp_connection->hf_send_cnum = 1; 1794 hfp_hf_run_for_context(hfp_connection); 1795 } 1796 1797 void hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 1798 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1799 if (!hfp_connection) { 1800 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1801 return; 1802 } 1803 // find index for assigned number 1804 int i; 1805 for (i = 0; i < hfp_indicators_nr ; i++){ 1806 if (hfp_indicators[i] == assigned_number){ 1807 // set value 1808 hfp_indicators_value[i] = value; 1809 // mark for update 1810 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 1811 hfp_connection->generic_status_update_bitmap |= (1<<i); 1812 // send update 1813 hfp_hf_run_for_context(hfp_connection); 1814 } 1815 return; 1816 } 1817 } 1818 } 1819 1820 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 1821 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1822 if (!hfp_connection) { 1823 log_error("HFP HF: ACL handle 0x%2x is not found.", acl_handle); 1824 return 0; 1825 } 1826 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 1827 } 1828 1829 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){ 1830 if (!name){ 1831 name = default_hfp_hf_service_name; 1832 } 1833 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 1834 1835 // Construct SupportedFeatures for SDP bitmap: 1836 // 1837 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 1838 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 1839 // 1840 // Wide band speech (bit 5) requires Codec negotiation 1841 // 1842 uint16_t sdp_features = supported_features & 0x1f; 1843 if (wide_band_speech && (supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION))){ 1844 sdp_features |= 1 << 5; 1845 } 1846 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 1847 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 1848 } 1849 1850 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 1851 if (callback == NULL){ 1852 log_error("hfp_hf_register_packet_handler called with NULL callback"); 1853 return; 1854 } 1855 hfp_hf_callback = callback; 1856 hfp_set_hf_callback(callback); 1857 } 1858