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 <stdio.h> 50 #include <string.h> 51 52 #include "bluetooth_sdp.h" 53 #include "btstack_debug.h" 54 #include "btstack_event.h" 55 #include "btstack_memory.h" 56 #include "btstack_run_loop.h" 57 #include "classic/core.h" 58 #include "classic/hfp.h" 59 #include "classic/hfp_hf.h" 60 #include "classic/sdp_client_rfcomm.h" 61 #include "classic/sdp_server.h" 62 #include "classic/sdp_util.h" 63 #include "hci.h" 64 #include "hci_cmd.h" 65 #include "hci_dump.h" 66 #include "l2cap.h" 67 68 // const 69 static const char default_hfp_hf_service_name[] = "Hands-Free unit"; 70 71 // globals 72 static btstack_packet_callback_registration_t hfp_hf_hci_event_callback_registration; 73 74 static uint16_t hfp_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 75 static uint8_t hfp_codecs_nr; 76 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 77 78 static uint8_t hfp_indicators_nr; 79 static uint8_t hfp_indicators[HFP_MAX_NUM_INDICATORS]; 80 static uint32_t hfp_indicators_value[HFP_MAX_NUM_INDICATORS]; 81 82 static uint8_t hfp_hf_speaker_gain; 83 static uint8_t hfp_hf_microphone_gain; 84 85 static btstack_packet_handler_t hfp_hf_callback; 86 87 static hfp_call_status_t hfp_call_status; 88 static hfp_callsetup_status_t hfp_callsetup_status; 89 static hfp_callheld_status_t hfp_callheld_status; 90 91 static char phone_number[25]; 92 93 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 94 int hf = get_bit(hfp_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 95 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 96 return hf && ag; 97 } 98 99 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 100 int hf = get_bit(hfp_supported_features, HFP_HFSF_THREE_WAY_CALLING); 101 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_THREE_WAY_CALLING); 102 return hf && ag; 103 } 104 105 106 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 107 int hf = get_bit(hfp_supported_features, HFP_HFSF_HF_INDICATORS); 108 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_HF_INDICATORS); 109 return hf && ag; 110 } 111 112 113 static hfp_connection_t * get_hfp_hf_connection_context_for_acl_handle(uint16_t handle){ 114 btstack_linked_list_iterator_t it; 115 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 116 while (btstack_linked_list_iterator_has_next(&it)){ 117 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 118 if (hfp_connection->acl_handle != handle) continue; 119 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 120 return hfp_connection; 121 } 122 return NULL; 123 } 124 125 /* emit functinos */ 126 127 static void hfp_hf_emit_subscriber_information(const hfp_connection_t * hfp_connection, uint8_t status){ 128 if (hfp_hf_callback == NULL) return; 129 uint8_t event[33]; 130 event[0] = HCI_EVENT_HFP_META; 131 event[1] = sizeof(event) - 2; 132 event[2] = HFP_SUBEVENT_SUBSCRIBER_NUMBER_INFORMATION; 133 little_endian_store_16(event, 3, hfp_connection->acl_handle); 134 event[5] = status; 135 event[6] = hfp_connection->bnip_type; 136 uint16_t size = btstack_min(strlen(hfp_connection->bnip_number), sizeof(event) - 8); 137 strncpy((char*)&event[7], hfp_connection->bnip_number, size); 138 event[7 + size] = 0; 139 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 140 } 141 142 static void hfp_hf_emit_type_and_number(const hfp_connection_t * hfp_connection, uint8_t event_subtype){ 143 if (hfp_hf_callback == NULL) return; 144 uint8_t event[32]; 145 event[0] = HCI_EVENT_HFP_META; 146 event[1] = sizeof(event) - 2; 147 event[2] = event_subtype; 148 little_endian_store_16(event, 3, hfp_connection->acl_handle); 149 event[5] = hfp_connection->bnip_type; 150 uint16_t size = btstack_min(strlen(hfp_connection->bnip_number), sizeof(event) - 7); 151 strncpy((char*)&event[6], hfp_connection->bnip_number, size); 152 event[6 + size] = 0; 153 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 154 } 155 156 static void hfp_hf_emit_enhanced_call_status(const hfp_connection_t * hfp_connection){ 157 if (hfp_hf_callback == NULL) return; 158 uint8_t event[38]; 159 int pos = 0; 160 event[pos++] = HCI_EVENT_HFP_META; 161 event[pos++] = sizeof(event) - 2; 162 event[pos++] = HFP_SUBEVENT_ENHANCED_CALL_STATUS; 163 little_endian_store_16(event, pos, hfp_connection->acl_handle); 164 pos += 2; 165 event[pos++] = hfp_connection->clcc_idx; 166 event[pos++] = hfp_connection->clcc_dir; 167 event[pos++] = hfp_connection->clcc_status; 168 event[pos++] = hfp_connection->clcc_mode; 169 event[pos++] = hfp_connection->clcc_mpty; 170 event[pos++] = hfp_connection->bnip_type; 171 uint16_t size = btstack_min(strlen(hfp_connection->bnip_number), sizeof(event) - pos - 1); 172 strncpy((char*)&event[pos], hfp_connection->bnip_number, size); 173 pos += size; 174 event[pos++] = 0; 175 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 176 } 177 178 179 static void hfp_emit_ag_indicator_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 180 if (hfp_hf_callback == NULL) return; 181 uint8_t event[12+HFP_MAX_INDICATOR_DESC_SIZE+1]; 182 int pos = 0; 183 event[pos++] = HCI_EVENT_HFP_META; 184 event[pos++] = sizeof(event) - 2; 185 event[pos++] = HFP_SUBEVENT_AG_INDICATOR_STATUS_CHANGED; 186 little_endian_store_16(event, pos, hfp_connection->acl_handle); 187 pos += 2; 188 event[pos++] = indicator->index; 189 event[pos++] = indicator->status; 190 event[pos++] = indicator->min_range; 191 event[pos++] = indicator->max_range; 192 event[pos++] = indicator->mandatory; 193 event[pos++] = indicator->enabled; 194 event[pos++] = indicator->status_changed; 195 strncpy((char*)&event[pos], indicator->name, HFP_MAX_INDICATOR_DESC_SIZE); 196 pos += HFP_MAX_INDICATOR_DESC_SIZE; 197 event[pos] = 0; 198 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 199 } 200 201 static void hfp_emit_network_operator_event(const hfp_connection_t * hfp_connection){ 202 if (hfp_hf_callback == NULL) return; 203 uint8_t event[7+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE+1]; 204 event[0] = HCI_EVENT_HFP_META; 205 event[1] = sizeof(event) - 2; 206 event[2] = HFP_SUBEVENT_NETWORK_OPERATOR_CHANGED; 207 little_endian_store_16(event, 3, hfp_connection->acl_handle); 208 event[5] = hfp_connection->network_operator.mode; 209 event[6] = hfp_connection->network_operator.format; 210 strncpy((char*)&event[7], hfp_connection->network_operator.name, HFP_MAX_NETWORK_OPERATOR_NAME_SIZE); 211 event[7+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE] = 0; 212 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 213 } 214 215 216 static void hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection_t * hfp_connection){ 217 btstack_assert(hfp_connection != NULL); 218 uint8_t event[HFP_MAX_VR_TEXT_SIZE]; 219 int pos = 0; 220 event[pos++] = HCI_EVENT_HFP_META; 221 event[pos++] = sizeof(event) - 2; 222 event[pos++] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE; 223 little_endian_store_16(event, pos, hfp_connection->acl_handle); 224 pos += 2; 225 little_endian_store_16(event, pos, hfp_connection->ag_msg.text_id); 226 pos += 2; 227 event[pos++] = hfp_connection->ag_msg.text_operation; 228 event[pos++] = hfp_connection->ag_msg.text_type; 229 230 // length, zero ending 231 uint16_t value_length = hfp_connection->ag_vra_msg_length; 232 uint8_t * value = &hfp_connection->line_buffer[0]; 233 uint16_t size = btstack_min(value_length, sizeof(event) - pos - 2 - 1); 234 little_endian_store_16(event, pos, size+1); 235 pos += 2; 236 memcpy(&event[pos], value, size); 237 event[pos + size] = 0; 238 pos += size + 1; 239 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 240 } 241 242 /* send commands */ 243 244 static inline int hfp_hf_send_cmd(uint16_t cid, const char * cmd){ 245 char buffer[20]; 246 snprintf(buffer, sizeof(buffer), "AT%s\r", cmd); 247 return send_str_over_rfcomm(cid, buffer); 248 } 249 250 static inline int hfp_hf_send_cmd_with_mark(uint16_t cid, const char * cmd, const char * mark){ 251 char buffer[20]; 252 snprintf(buffer, sizeof(buffer), "AT%s%s\r", cmd, mark); 253 return send_str_over_rfcomm(cid, buffer); 254 } 255 256 static inline int hfp_hf_send_cmd_with_int(uint16_t cid, const char * cmd, uint16_t value){ 257 char buffer[40]; 258 snprintf(buffer, sizeof(buffer), "AT%s=%d\r", cmd, value); 259 return send_str_over_rfcomm(cid, buffer); 260 } 261 262 static int hfp_hf_cmd_notify_on_codecs(uint16_t cid){ 263 char buffer[30]; 264 const int size = sizeof(buffer); 265 int offset = snprintf(buffer, size, "AT%s=", HFP_AVAILABLE_CODECS); 266 offset += join(buffer+offset, size-offset, hfp_codecs, hfp_codecs_nr); 267 offset += snprintf(buffer+offset, size-offset, "\r"); 268 return send_str_over_rfcomm(cid, buffer); 269 } 270 271 static int hfp_hf_cmd_activate_status_update_for_ag_indicator(uint16_t cid, uint32_t indicators_status, int indicators_nr){ 272 char buffer[50]; 273 const int size = sizeof(buffer); 274 int offset = snprintf(buffer, size, "AT%s=", HFP_UPDATE_ENABLE_STATUS_FOR_INDIVIDUAL_AG_INDICATORS); 275 offset += join_bitmap(buffer+offset, size-offset, indicators_status, indicators_nr); 276 offset += snprintf(buffer+offset, size-offset, "\r"); 277 return send_str_over_rfcomm(cid, buffer); 278 } 279 280 static int hfp_hf_cmd_list_supported_generic_status_indicators(uint16_t cid){ 281 char buffer[30]; 282 const int size = sizeof(buffer); 283 int offset = snprintf(buffer, size, "AT%s=", HFP_GENERIC_STATUS_INDICATOR); 284 offset += join(buffer+offset, size-offset, hfp_indicators, hfp_indicators_nr); 285 offset += snprintf(buffer+offset, size-offset, "\r"); 286 return send_str_over_rfcomm(cid, buffer); 287 } 288 289 static int hfp_hf_cmd_activate_status_update_for_all_ag_indicators(uint16_t cid, uint8_t activate){ 290 char buffer[20]; 291 snprintf(buffer, sizeof(buffer), "AT%s=3,0,0,%d\r", HFP_ENABLE_STATUS_UPDATE_FOR_AG_INDICATORS, activate); 292 return send_str_over_rfcomm(cid, buffer); 293 } 294 295 static int hfp_hf_initiate_outgoing_call_cmd(uint16_t cid){ 296 char buffer[40]; 297 snprintf(buffer, sizeof(buffer), "%s%s;\r", HFP_CALL_PHONE_NUMBER, phone_number); 298 return send_str_over_rfcomm(cid, buffer); 299 } 300 301 static int hfp_hf_send_memory_dial_cmd(uint16_t cid, int memory_id){ 302 char buffer[40]; 303 snprintf(buffer, sizeof(buffer), "%s>%d;\r", HFP_CALL_PHONE_NUMBER, memory_id); 304 return send_str_over_rfcomm(cid, buffer); 305 } 306 307 static int hfp_hf_send_chld(uint16_t cid, unsigned int number){ 308 char buffer[40]; 309 snprintf(buffer, sizeof(buffer), "AT%s=%u\r", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, number); 310 return send_str_over_rfcomm(cid, buffer); 311 } 312 313 static int hfp_hf_send_dtmf(uint16_t cid, char code){ 314 char buffer[20]; 315 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", HFP_TRANSMIT_DTMF_CODES, code); 316 return send_str_over_rfcomm(cid, buffer); 317 } 318 319 static int hfp_hf_cmd_ata(uint16_t cid){ 320 return send_str_over_rfcomm(cid, (char *) "ATA\r"); 321 } 322 323 static int hfp_hf_cmd_exchange_supported_features(uint16_t cid){ 324 return hfp_hf_send_cmd_with_int(cid, HFP_SUPPORTED_FEATURES, hfp_supported_features); 325 } 326 327 static int hfp_hf_cmd_retrieve_indicators(uint16_t cid){ 328 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "=?"); 329 } 330 331 static int hfp_hf_cmd_retrieve_indicators_status(uint16_t cid){ 332 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "?"); 333 } 334 335 static int hfp_hf_cmd_retrieve_can_hold_call(uint16_t cid){ 336 return hfp_hf_send_cmd_with_mark(cid, HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, "=?"); 337 } 338 339 static int hfp_hf_cmd_retrieve_supported_generic_status_indicators(uint16_t cid){ 340 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "=?"); 341 } 342 343 static int hfp_hf_cmd_list_initital_supported_generic_status_indicators(uint16_t cid){ 344 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "?"); 345 } 346 347 static int hfp_hf_cmd_query_operator_name_format(uint16_t cid){ 348 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "=3,0"); 349 } 350 351 static int hfp_hf_cmd_query_operator_name(uint16_t cid){ 352 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "?"); 353 } 354 355 static int hfp_hf_cmd_trigger_codec_connection_setup(uint16_t cid){ 356 return hfp_hf_send_cmd(cid, HFP_TRIGGER_CODEC_CONNECTION_SETUP); 357 } 358 359 static int hfp_hf_set_microphone_gain_cmd(uint16_t cid, int gain){ 360 return hfp_hf_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 361 } 362 363 static int hfp_hf_set_speaker_gain_cmd(uint16_t cid, int gain){ 364 return hfp_hf_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 365 } 366 367 static int hfp_hf_set_calling_line_notification_cmd(uint16_t cid, uint8_t activate){ 368 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CLIP, activate); 369 } 370 371 static int hfp_hf_set_voice_recognition_notification_cmd(uint16_t cid, uint8_t activate){ 372 return hfp_hf_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate); 373 } 374 375 static int hfp_hf_set_call_waiting_notification_cmd(uint16_t cid, uint8_t activate){ 376 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CALL_WAITING_NOTIFICATION, activate); 377 } 378 379 static int hfp_hf_cmd_confirm_codec(uint16_t cid, uint8_t codec){ 380 return hfp_hf_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 381 } 382 383 static int hfp_hf_cmd_enable_extended_audio_gateway_error_report(uint16_t cid, uint8_t enable){ 384 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR, enable); 385 } 386 387 static int hfp_hf_send_redial_last_number_cmd(uint16_t cid){ 388 return hfp_hf_send_cmd(cid, HFP_REDIAL_LAST_NUMBER); 389 } 390 391 static int hfp_hf_send_chup(uint16_t cid){ 392 return hfp_hf_send_cmd(cid, HFP_HANG_UP_CALL); 393 } 394 395 static int hfp_hf_send_binp(uint16_t cid){ 396 return hfp_hf_send_cmd_with_mark(cid, HFP_PHONE_NUMBER_FOR_VOICE_TAG, "=1"); 397 } 398 399 static int hfp_hf_send_clcc(uint16_t cid){ 400 return hfp_hf_send_cmd(cid, HFP_LIST_CURRENT_CALLS); 401 } 402 403 /* state machines */ 404 405 static int hfp_hf_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 406 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 407 if (hfp_connection->ok_pending) return 0; 408 int done = 1; 409 log_info("hfp_hf_run_for_context_service_level_connection state %d\n", hfp_connection->state); 410 switch (hfp_connection->state){ 411 case HFP_EXCHANGE_SUPPORTED_FEATURES: 412 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 413 hfp_connection->state = HFP_W4_EXCHANGE_SUPPORTED_FEATURES; 414 hfp_hf_cmd_exchange_supported_features(hfp_connection->rfcomm_cid); 415 break; 416 case HFP_NOTIFY_ON_CODECS: 417 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 418 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 419 break; 420 case HFP_RETRIEVE_INDICATORS: 421 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 422 hfp_hf_cmd_retrieve_indicators(hfp_connection->rfcomm_cid); 423 break; 424 case HFP_RETRIEVE_INDICATORS_STATUS: 425 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 426 hfp_hf_cmd_retrieve_indicators_status(hfp_connection->rfcomm_cid); 427 break; 428 case HFP_ENABLE_INDICATORS_STATUS_UPDATE: 429 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 430 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, 1); 431 break; 432 case HFP_RETRIEVE_CAN_HOLD_CALL: 433 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 434 hfp_hf_cmd_retrieve_can_hold_call(hfp_connection->rfcomm_cid); 435 break; 436 case HFP_LIST_GENERIC_STATUS_INDICATORS: 437 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 438 hfp_hf_cmd_list_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 439 break; 440 case HFP_RETRIEVE_GENERIC_STATUS_INDICATORS: 441 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 442 hfp_hf_cmd_retrieve_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 443 break; 444 case HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 445 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 446 hfp_hf_cmd_list_initital_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 447 break; 448 default: 449 done = 0; 450 break; 451 } 452 return done; 453 } 454 455 456 static int hfp_hf_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 457 if (hfp_connection->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 458 if (hfp_connection->ok_pending){ 459 return 0; 460 } 461 int done = 0; 462 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 463 hfp_connection->ok_pending = 1; 464 done = 1; 465 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, hfp_connection->enable_status_update_for_ag_indicators); 466 return done; 467 }; 468 if (hfp_connection->change_status_update_for_individual_ag_indicators){ 469 hfp_connection->ok_pending = 1; 470 done = 1; 471 hfp_hf_cmd_activate_status_update_for_ag_indicator(hfp_connection->rfcomm_cid, 472 hfp_connection->ag_indicators_status_update_bitmap, 473 hfp_connection->ag_indicators_nr); 474 return done; 475 } 476 477 switch (hfp_connection->hf_query_operator_state){ 478 case HFP_HF_QUERY_OPERATOR_SET_FORMAT: 479 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK; 480 hfp_connection->ok_pending = 1; 481 hfp_hf_cmd_query_operator_name_format(hfp_connection->rfcomm_cid); 482 return 1; 483 case HFP_HF_QUERY_OPERATOR_SEND_QUERY: 484 hfp_connection->hf_query_operator_state = HPF_HF_QUERY_OPERATOR_W4_RESULT; 485 hfp_connection->ok_pending = 1; 486 hfp_hf_cmd_query_operator_name(hfp_connection->rfcomm_cid); 487 return 1; 488 default: 489 break; 490 } 491 492 if (hfp_connection->enable_extended_audio_gateway_error_report){ 493 hfp_connection->ok_pending = 1; 494 done = 1; 495 hfp_hf_cmd_enable_extended_audio_gateway_error_report(hfp_connection->rfcomm_cid, hfp_connection->enable_extended_audio_gateway_error_report); 496 return done; 497 } 498 499 return done; 500 } 501 502 static int hfp_hf_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 503 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 504 return 0; 505 } 506 int done = 0; 507 508 if (hfp_connection->ok_pending == 1){ 509 return 0; 510 } 511 // voice recognition activated from AG 512 if (hfp_connection->command == HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION){ 513 switch(hfp_connection->vra_state_requested){ 514 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 515 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 516 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 517 // ignore AG command, continue to wait for OK 518 return 0; 519 520 default: 521 if (hfp_connection->ag_vra_msg_length > 0){ 522 hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection); 523 hfp_connection->ag_vra_msg_length = 0; 524 break; 525 } 526 switch(hfp_connection->ag_vra_state){ 527 case HFP_VOICE_RECOGNITION_STATE_AG_READY: 528 switch (hfp_connection->ag_vra_status){ 529 case 0: 530 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 531 break; 532 case 1: 533 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 534 break; 535 case 2: 536 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 537 break; 538 default: 539 break; 540 } 541 break; 542 default: 543 // state messages from AG 544 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 545 break; 546 } 547 break; 548 } 549 hfp_connection->command = HFP_CMD_NONE; 550 } 551 552 553 switch (hfp_connection->vra_state_requested){ 554 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 555 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 0); 556 if (done != 0){ 557 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 558 hfp_connection->ok_pending = 1; 559 } 560 return 1; 561 562 563 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 564 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 1); 565 if (done != 0){ 566 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 567 hfp_connection->ok_pending = 1; 568 return 1; 569 } 570 break; 571 572 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 573 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 2); 574 if (done != 0){ 575 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 576 hfp_connection->ok_pending = 1; 577 return 1; 578 } 579 break; 580 581 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 582 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 583 hfp_connection->vra_state_requested = hfp_connection->vra_state; 584 hfp_connection->activate_voice_recognition = false; 585 if (hfp_connection->activate_voice_recognition){ 586 hfp_hf_activate_voice_recognition(hfp_connection->acl_handle); 587 } else { 588 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 589 } 590 break; 591 592 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 593 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 594 hfp_connection->vra_state_requested = hfp_connection->vra_state; 595 hfp_connection->activate_voice_recognition = false; 596 if (hfp_connection->deactivate_voice_recognition){ 597 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 598 } else { 599 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 600 } 601 break; 602 603 604 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 605 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 606 hfp_connection->vra_state_requested = hfp_connection->vra_state; 607 hfp_connection->activate_voice_recognition = false; 608 if (hfp_connection->deactivate_voice_recognition){ 609 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 610 } else { 611 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 612 } 613 break; 614 615 default: 616 break; 617 } 618 return done; 619 } 620 621 622 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 623 if (hfp_connection->ok_pending) return 0; 624 625 if (hfp_connection->trigger_codec_exchange){ 626 hfp_connection->trigger_codec_exchange = 0; 627 628 hfp_connection->ok_pending = 1; 629 hfp_hf_cmd_trigger_codec_connection_setup(hfp_connection->rfcomm_cid); 630 return 1; 631 } 632 633 if (hfp_connection->hf_send_codec_confirm){ 634 hfp_connection->hf_send_codec_confirm = false; 635 636 hfp_connection->ok_pending = 1; 637 hfp_hf_cmd_confirm_codec(hfp_connection->rfcomm_cid, hfp_connection->codec_confirmed); 638 return 1; 639 } 640 641 if (hfp_connection->hf_send_supported_codecs){ 642 hfp_connection->hf_send_supported_codecs = false; 643 644 hfp_connection->ok_pending = 1; 645 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 646 return 1; 647 } 648 649 return 0; 650 } 651 652 static int hfp_hf_run_for_audio_connection(hfp_connection_t * hfp_connection){ 653 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 654 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 655 656 if (hfp_connection->release_audio_connection){ 657 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 658 hfp_connection->release_audio_connection = 0; 659 gap_disconnect(hfp_connection->sco_handle); 660 return 1; 661 } 662 663 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 664 665 // run codecs exchange 666 int done = codecs_exchange_state_machine(hfp_connection); 667 if (done) return 1; 668 669 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 670 if (hfp_connection->establish_audio_connection){ 671 hfp_connection->state = HFP_W4_SCO_CONNECTED; 672 hfp_connection->establish_audio_connection = 0; 673 hfp_setup_synchronous_connection(hfp_connection); 674 return 1; 675 } 676 return 0; 677 } 678 679 680 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 681 682 if (hfp_connection->ok_pending) return 0; 683 684 if (hfp_connection->hf_answer_incoming_call){ 685 hfp_hf_cmd_ata(hfp_connection->rfcomm_cid); 686 hfp_connection->hf_answer_incoming_call = 0; 687 return 1; 688 } 689 return 0; 690 } 691 692 static void hfp_hf_run_for_context(hfp_connection_t * hfp_connection){ 693 694 btstack_assert(hfp_connection != NULL); 695 btstack_assert(hfp_connection->local_role == HFP_ROLE_HF); 696 697 // during SDP query, RFCOMM CID is not set 698 if (hfp_connection->rfcomm_cid == 0) return; 699 700 // assert command could be sent 701 if (hci_can_send_command_packet_now() == 0) return; 702 703 #ifdef ENABLE_CC256X_ASSISTED_HFP 704 // WBS Disassociate 705 if (hfp_connection->cc256x_send_wbs_disassociate){ 706 hfp_connection->cc256x_send_wbs_disassociate = false; 707 hci_send_cmd(&hci_ti_wbs_disassociate); 708 return; 709 } 710 // Write Codec Config 711 if (hfp_connection->cc256x_send_write_codec_config){ 712 hfp_connection->cc256x_send_write_codec_config = false; 713 hfp_cc256x_write_codec_config(hfp_connection); 714 return; 715 } 716 // WBS Associate 717 if (hfp_connection->cc256x_send_wbs_associate){ 718 hfp_connection->cc256x_send_wbs_associate = false; 719 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 720 return; 721 } 722 #endif 723 #ifdef ENABLE_BCM_PCM_WBS 724 // Enable WBS 725 if (hfp_connection->bcm_send_enable_wbs){ 726 hfp_connection->bcm_send_enable_wbs = false; 727 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 728 return; 729 } 730 // Write I2S/PCM params 731 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 732 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 733 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 734 return; 735 } 736 // Disable WBS 737 if (hfp_connection->bcm_send_disable_wbs){ 738 hfp_connection->bcm_send_disable_wbs = false; 739 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 740 return; 741 } 742 #endif 743 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 744 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 745 hfp_finalize_connection_context(hfp_connection); 746 return; 747 } 748 #endif 749 750 if (hfp_connection->accept_sco){ 751 bool incoming_eSCO = hfp_connection->accept_sco == 2; 752 hfp_connection->accept_sco = 0; 753 // notify about codec selection if not done already 754 if (hfp_connection->negotiated_codec == 0){ 755 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 756 } 757 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 758 return; 759 } 760 761 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 762 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 763 return; 764 } 765 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection); 766 if (!done){ 767 done = hfp_hf_run_for_context_service_level_connection_queries(hfp_connection); 768 } 769 if (!done){ 770 done = hfp_hf_run_for_audio_connection(hfp_connection); 771 } 772 if (!done){ 773 done = hfp_hf_voice_recognition_state_machine(hfp_connection); 774 } 775 if (!done){ 776 done = call_setup_state_machine(hfp_connection); 777 } 778 779 // don't send a new command while ok still pending or SLC is not established 780 if (hfp_connection->ok_pending || (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED)){ 781 return; 782 } 783 784 if (hfp_connection->send_microphone_gain){ 785 hfp_connection->send_microphone_gain = 0; 786 hfp_connection->ok_pending = 1; 787 hfp_hf_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 788 return; 789 } 790 791 if (hfp_connection->send_speaker_gain){ 792 hfp_connection->send_speaker_gain = 0; 793 hfp_connection->ok_pending = 1; 794 hfp_hf_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 795 return; 796 } 797 798 if (hfp_connection->hf_deactivate_calling_line_notification){ 799 hfp_connection->hf_deactivate_calling_line_notification = 0; 800 hfp_connection->ok_pending = 1; 801 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 0); 802 return; 803 } 804 805 if (hfp_connection->hf_activate_calling_line_notification){ 806 hfp_connection->hf_activate_calling_line_notification = 0; 807 hfp_connection->ok_pending = 1; 808 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 1); 809 return; 810 } 811 812 if (hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction){ 813 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 0; 814 hfp_connection->response_pending_for_command = HFP_CMD_TURN_OFF_EC_AND_NR; 815 hfp_connection->ok_pending = 1; 816 hfp_hf_send_cmd_with_int(hfp_connection->rfcomm_cid, HFP_TURN_OFF_EC_AND_NR, 0); 817 return; 818 } 819 820 if (hfp_connection->hf_deactivate_call_waiting_notification){ 821 hfp_connection->hf_deactivate_call_waiting_notification = 0; 822 hfp_connection->ok_pending = 1; 823 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 0); 824 return; 825 } 826 827 if (hfp_connection->hf_activate_call_waiting_notification){ 828 hfp_connection->hf_activate_call_waiting_notification = 0; 829 hfp_connection->ok_pending = 1; 830 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 1); 831 return; 832 } 833 834 if (hfp_connection->hf_initiate_outgoing_call){ 835 hfp_connection->hf_initiate_outgoing_call = 0; 836 hfp_connection->ok_pending = 1; 837 hfp_hf_initiate_outgoing_call_cmd(hfp_connection->rfcomm_cid); 838 return; 839 } 840 841 if (hfp_connection->hf_initiate_memory_dialing){ 842 hfp_connection->hf_initiate_memory_dialing = 0; 843 hfp_connection->ok_pending = 1; 844 hfp_hf_send_memory_dial_cmd(hfp_connection->rfcomm_cid, hfp_connection->memory_id); 845 return; 846 } 847 848 if (hfp_connection->hf_initiate_redial_last_number){ 849 hfp_connection->hf_initiate_redial_last_number = 0; 850 hfp_connection->ok_pending = 1; 851 hfp_hf_send_redial_last_number_cmd(hfp_connection->rfcomm_cid); 852 return; 853 } 854 855 if (hfp_connection->hf_send_chup){ 856 hfp_connection->hf_send_chup = 0; 857 hfp_connection->ok_pending = 1; 858 hfp_hf_send_chup(hfp_connection->rfcomm_cid); 859 return; 860 } 861 862 if (hfp_connection->hf_send_chld_0){ 863 hfp_connection->hf_send_chld_0 = 0; 864 hfp_connection->ok_pending = 1; 865 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 0); 866 return; 867 } 868 869 if (hfp_connection->hf_send_chld_1){ 870 hfp_connection->hf_send_chld_1 = 0; 871 hfp_connection->ok_pending = 1; 872 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 1); 873 return; 874 } 875 876 if (hfp_connection->hf_send_chld_2){ 877 hfp_connection->hf_send_chld_2 = 0; 878 hfp_connection->ok_pending = 1; 879 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 2); 880 return; 881 } 882 883 if (hfp_connection->hf_send_chld_3){ 884 hfp_connection->hf_send_chld_3 = 0; 885 hfp_connection->ok_pending = 1; 886 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 3); 887 return; 888 } 889 890 if (hfp_connection->hf_send_chld_4){ 891 hfp_connection->hf_send_chld_4 = 0; 892 hfp_connection->ok_pending = 1; 893 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 4); 894 return; 895 } 896 897 if (hfp_connection->hf_send_chld_x){ 898 hfp_connection->hf_send_chld_x = 0; 899 hfp_connection->ok_pending = 1; 900 hfp_hf_send_chld(hfp_connection->rfcomm_cid, hfp_connection->hf_send_chld_x_index); 901 return; 902 } 903 904 if (hfp_connection->hf_send_dtmf_code){ 905 char code = hfp_connection->hf_send_dtmf_code; 906 hfp_connection->hf_send_dtmf_code = 0; 907 hfp_connection->ok_pending = 1; 908 hfp_hf_send_dtmf(hfp_connection->rfcomm_cid, code); 909 return; 910 } 911 912 if (hfp_connection->hf_send_binp){ 913 hfp_connection->hf_send_binp = 0; 914 hfp_connection->ok_pending = 1; 915 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 916 return; 917 } 918 919 if (hfp_connection->hf_send_clcc){ 920 hfp_connection->hf_send_clcc = 0; 921 hfp_connection->ok_pending = 1; 922 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 923 return; 924 } 925 926 if (hfp_connection->hf_send_rrh){ 927 hfp_connection->hf_send_rrh = 0; 928 char buffer[20]; 929 switch (hfp_connection->hf_send_rrh_command){ 930 case '?': 931 snprintf(buffer, sizeof(buffer), "AT%s?\r", 932 HFP_RESPONSE_AND_HOLD); 933 buffer[sizeof(buffer) - 1] = 0; 934 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 935 return; 936 case '0': 937 case '1': 938 case '2': 939 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", 940 HFP_RESPONSE_AND_HOLD, 941 hfp_connection->hf_send_rrh_command); 942 buffer[sizeof(buffer) - 1] = 0; 943 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 944 return; 945 default: 946 break; 947 } 948 return; 949 } 950 951 if (hfp_connection->hf_send_cnum){ 952 hfp_connection->hf_send_cnum = 0; 953 char buffer[20]; 954 snprintf(buffer, sizeof(buffer), "AT%s\r", 955 HFP_SUBSCRIBER_NUMBER_INFORMATION); 956 buffer[sizeof(buffer) - 1] = 0; 957 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 958 return; 959 } 960 961 // update HF indicators 962 if (hfp_connection->generic_status_update_bitmap){ 963 int i; 964 for (i=0;i<hfp_indicators_nr;i++){ 965 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 966 if (hfp_connection->generic_status_indicators[i].state){ 967 hfp_connection->ok_pending = 1; 968 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 969 char buffer[30]; 970 snprintf(buffer, sizeof(buffer), "AT%s=%u,%u\r", 971 HFP_TRANSFER_HF_INDICATOR_STATUS, 972 hfp_indicators[i], 973 (unsigned int)hfp_indicators_value[i]); 974 buffer[sizeof(buffer) - 1] = 0; 975 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 976 } else { 977 log_info("Not sending HF indicator %u as it is disabled", hfp_indicators[i]); 978 } 979 return; 980 } 981 } 982 } 983 984 if (done) return; 985 // deal with disconnect 986 switch (hfp_connection->state){ 987 case HFP_W2_DISCONNECT_RFCOMM: 988 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 989 rfcomm_disconnect(hfp_connection->rfcomm_cid); 990 break; 991 992 default: 993 break; 994 } 995 } 996 997 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 998 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 999 1000 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 1001 1002 // restore volume settings 1003 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 1004 hfp_connection->send_speaker_gain = 1; 1005 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 1006 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 1007 hfp_connection->send_microphone_gain = 1; 1008 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 1009 // enable all indicators 1010 int i; 1011 for (i=0;i<hfp_indicators_nr;i++){ 1012 hfp_connection->generic_status_indicators[i].uuid = hfp_indicators[i]; 1013 hfp_connection->generic_status_indicators[i].state = 1; 1014 } 1015 } 1016 1017 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 1018 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_codecs_nr, hfp_codecs)){ 1019 // Codec supported, confirm 1020 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1021 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1022 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 1023 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 1024 1025 hfp_connection->hf_send_codec_confirm = true; 1026 } else { 1027 // Codec not supported, send supported codecs 1028 hfp_connection->codec_confirmed = 0; 1029 hfp_connection->suggested_codec = 0; 1030 hfp_connection->negotiated_codec = 0; 1031 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1032 1033 hfp_connection->hf_send_supported_codecs = true; 1034 } 1035 } 1036 1037 static bool hfp_hf_switch_on_ok_pending(hfp_connection_t *hfp_connection, uint8_t status){ 1038 bool event_emited = true; 1039 1040 switch (hfp_connection->response_pending_for_command){ 1041 case HFP_CMD_TURN_OFF_EC_AND_NR: 1042 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 1043 break; 1044 default: 1045 event_emited = false; 1046 1047 switch (hfp_connection->state){ 1048 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 1049 if (has_codec_negotiation_feature(hfp_connection)){ 1050 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 1051 break; 1052 } 1053 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1054 break; 1055 1056 case HFP_W4_NOTIFY_ON_CODECS: 1057 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1058 break; 1059 1060 case HFP_W4_RETRIEVE_INDICATORS: 1061 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 1062 break; 1063 1064 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 1065 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 1066 break; 1067 1068 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 1069 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 1070 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 1071 break; 1072 } 1073 if (has_hf_indicators_feature(hfp_connection)){ 1074 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1075 break; 1076 } 1077 hfp_ag_slc_established(hfp_connection); 1078 break; 1079 1080 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 1081 if (has_hf_indicators_feature(hfp_connection)){ 1082 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1083 break; 1084 } 1085 hfp_ag_slc_established(hfp_connection); 1086 break; 1087 1088 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 1089 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 1090 break; 1091 1092 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 1093 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 1094 break; 1095 1096 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 1097 hfp_ag_slc_established(hfp_connection); 1098 break; 1099 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1100 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 1101 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 1102 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1103 break; 1104 } 1105 1106 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 1107 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 1108 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1109 break; 1110 } 1111 1112 switch (hfp_connection->hf_query_operator_state){ 1113 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 1114 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1115 break; 1116 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 1117 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 1118 hfp_emit_network_operator_event(hfp_connection); 1119 break; 1120 default: 1121 break; 1122 } 1123 1124 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1125 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1126 break; 1127 } 1128 1129 switch (hfp_connection->codecs_state){ 1130 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1131 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1132 break; 1133 case HFP_CODECS_HF_CONFIRMED_CODEC: 1134 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1135 break; 1136 default: 1137 break; 1138 } 1139 hfp_hf_voice_recognition_state_machine(hfp_connection); 1140 break; 1141 case HFP_AUDIO_CONNECTION_ESTABLISHED: 1142 hfp_hf_voice_recognition_state_machine(hfp_connection); 1143 break; 1144 default: 1145 break; 1146 } 1147 break; 1148 } 1149 1150 // done 1151 hfp_connection->response_pending_for_command = HFP_CMD_NONE; 1152 hfp_connection->ok_pending = 0; 1153 hfp_connection->command = HFP_CMD_NONE; 1154 return event_emited; 1155 } 1156 1157 1158 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1159 uint16_t i; 1160 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1161 if (hfp_connection->ag_indicators[i].status_changed) { 1162 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1163 hfp_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1164 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1165 hfp_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1166 // avoid set but not used warning 1167 (void) hfp_callheld_status; 1168 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1169 hfp_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1170 } 1171 hfp_connection->ag_indicators[i].status_changed = 0; 1172 hfp_emit_ag_indicator_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1173 break; 1174 } 1175 } 1176 } 1177 1178 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1179 int value; 1180 int i; 1181 bool event_emited; 1182 1183 switch (hfp_connection->command){ 1184 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1185 hfp_connection->command = HFP_CMD_NONE; 1186 hfp_hf_emit_subscriber_information(hfp_connection, 0); 1187 break; 1188 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1189 hfp_connection->command = HFP_CMD_NONE; 1190 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1191 break; 1192 case HFP_CMD_LIST_CURRENT_CALLS: 1193 hfp_connection->command = HFP_CMD_NONE; 1194 hfp_hf_emit_enhanced_call_status(hfp_connection); 1195 break; 1196 case HFP_CMD_SET_SPEAKER_GAIN: 1197 hfp_connection->command = HFP_CMD_NONE; 1198 value = btstack_atoi((char*)hfp_connection->line_buffer); 1199 hfp_hf_speaker_gain = value; 1200 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1201 break; 1202 case HFP_CMD_SET_MICROPHONE_GAIN: 1203 hfp_connection->command = HFP_CMD_NONE; 1204 value = btstack_atoi((char*)hfp_connection->line_buffer); 1205 hfp_hf_microphone_gain = value; 1206 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1207 break; 1208 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1209 hfp_connection->command = HFP_CMD_NONE; 1210 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1211 break; 1212 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1213 hfp_connection->command = HFP_CMD_NONE; 1214 hfp_hf_emit_type_and_number(hfp_connection, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION); 1215 break; 1216 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1217 hfp_connection->command = HFP_CMD_NONE; 1218 hfp_hf_emit_type_and_number(hfp_connection, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION); 1219 break; 1220 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1221 hfp_connection->command = HFP_CMD_NONE; 1222 hfp_connection->ok_pending = 0; 1223 hfp_connection->extended_audio_gateway_error = 0; 1224 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1225 break; 1226 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 1227 break; 1228 case HFP_CMD_ERROR: 1229 switch (hfp_connection->state){ 1230 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1231 switch (hfp_connection->codecs_state){ 1232 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1233 hfp_reset_context_flags(hfp_connection); 1234 hfp_emit_sco_event(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 0, hfp_connection->remote_addr, hfp_connection->negotiated_codec); 1235 return; 1236 default: 1237 break; 1238 } 1239 break; 1240 default: 1241 break; 1242 } 1243 1244 // handle error response for voice activation (HF initiated) 1245 switch(hfp_connection->vra_state_requested){ 1246 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1247 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1248 break; 1249 default: 1250 if (hfp_connection->vra_state_requested == hfp_connection->vra_state){ 1251 break; 1252 } 1253 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1254 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1255 hfp_reset_context_flags(hfp_connection); 1256 return; 1257 } 1258 event_emited = hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1259 if (!event_emited){ 1260 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 1); 1261 } 1262 hfp_reset_context_flags(hfp_connection); 1263 break; 1264 1265 case HFP_CMD_OK: 1266 hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_SUCCESS); 1267 break; 1268 case HFP_CMD_RING: 1269 hfp_connection->command = HFP_CMD_NONE; 1270 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1271 break; 1272 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1273 hfp_connection->command = HFP_CMD_NONE; 1274 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1275 break; 1276 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1277 hfp_connection->command = HFP_CMD_NONE; 1278 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1279 hfp_emit_ag_indicator_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1280 } 1281 break; 1282 case HFP_CMD_AG_SUGGESTED_CODEC: 1283 hfp_connection->command = HFP_CMD_NONE; 1284 hfp_hf_handle_suggested_codec(hfp_connection); 1285 break; 1286 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1287 hfp_emit_event(hfp_connection, HFP_SUBEVENT_IN_BAND_RING_TONE, get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE)); 1288 default: 1289 break; 1290 } 1291 } 1292 1293 static int hfp_parser_is_end_of_line(uint8_t byte){ 1294 return (byte == '\n') || (byte == '\r'); 1295 } 1296 1297 static void hfp_hf_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 1298 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1299 if (size < 1) return; 1300 1301 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1302 #ifdef ENABLE_HFP_AT_MESSAGES 1303 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1304 #endif 1305 1306 // process messages byte-wise 1307 int pos; 1308 for (pos = 0; pos < size; pos++){ 1309 hfp_parse(hfp_connection, packet[pos], 1); 1310 // parse until end of line "\r" or "\n" 1311 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1312 } 1313 hfp_hf_handle_rfcomm_command(hfp_connection); 1314 } 1315 1316 static void hfp_hf_run(void){ 1317 btstack_linked_list_iterator_t it; 1318 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1319 while (btstack_linked_list_iterator_has_next(&it)){ 1320 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1321 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1322 hfp_hf_run_for_context(hfp_connection); 1323 } 1324 } 1325 1326 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1327 hfp_connection_t * hfp_connection; 1328 switch (packet_type){ 1329 case RFCOMM_DATA_PACKET: 1330 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1331 if (!hfp_connection) return; 1332 hfp_hf_handle_rfcomm_data(hfp_connection, packet, size); 1333 hfp_hf_run_for_context(hfp_connection); 1334 return; 1335 case HCI_EVENT_PACKET: 1336 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1337 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1338 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1339 return; 1340 } 1341 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1342 break; 1343 default: 1344 break; 1345 } 1346 hfp_hf_run(); 1347 } 1348 1349 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1350 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1351 hfp_hf_run(); 1352 } 1353 1354 uint8_t hfp_hf_init(uint16_t rfcomm_channel_nr){ 1355 uint8_t status = rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1356 if (status != ERROR_CODE_SUCCESS){ 1357 return status; 1358 } 1359 1360 hfp_init(); 1361 hfp_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1362 hfp_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1363 hfp_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1364 hfp_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1365 hfp_codecs_nr = 0; 1366 hfp_hf_speaker_gain = 9; 1367 hfp_hf_microphone_gain = 9; 1368 hfp_indicators_nr = 0; 1369 hfp_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1370 1371 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1372 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1373 1374 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1375 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1376 return ERROR_CODE_SUCCESS; 1377 } 1378 1379 void hfp_hf_deinit(void){ 1380 hfp_deinit(); 1381 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1382 (void) memset(&hfp_hf_callback, 0, sizeof(btstack_packet_handler_t)); 1383 (void) memset(phone_number, 0, sizeof(phone_number)); 1384 } 1385 1386 void hfp_hf_init_codecs(int codecs_nr, const uint8_t * codecs){ 1387 btstack_assert(codecs_nr < HFP_MAX_NUM_CODECS); 1388 1389 hfp_codecs_nr = codecs_nr; 1390 int i; 1391 for (i=0; i<codecs_nr; i++){ 1392 hfp_codecs[i] = codecs[i]; 1393 } 1394 } 1395 1396 void hfp_hf_init_supported_features(uint32_t supported_features){ 1397 hfp_supported_features = supported_features; 1398 } 1399 1400 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1401 btstack_assert(hfp_indicators_nr < HFP_MAX_NUM_INDICATORS); 1402 1403 hfp_indicators_nr = indicators_nr; 1404 int i; 1405 for (i = 0; i < hfp_indicators_nr ; i++){ 1406 hfp_indicators[i] = indicators[i]; 1407 } 1408 } 1409 1410 uint8_t hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1411 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1412 } 1413 1414 uint8_t hfp_hf_release_service_level_connection(hci_con_handle_t acl_handle){ 1415 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1416 if (!hfp_connection){ 1417 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1418 } 1419 hfp_trigger_release_service_level_connection(hfp_connection); 1420 hfp_hf_run_for_context(hfp_connection); 1421 return ERROR_CODE_SUCCESS; 1422 } 1423 1424 static uint8_t hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1425 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1426 if (!hfp_connection) { 1427 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1428 } 1429 hfp_connection->enable_status_update_for_ag_indicators = enable; 1430 hfp_hf_run_for_context(hfp_connection); 1431 return ERROR_CODE_SUCCESS; 1432 } 1433 1434 uint8_t hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1435 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1436 } 1437 1438 uint8_t hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1439 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1440 } 1441 1442 // TODO: returned ERROR - wrong format 1443 uint8_t hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1444 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1445 if (!hfp_connection) { 1446 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1447 } 1448 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1449 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1450 hfp_hf_run_for_context(hfp_connection); 1451 return ERROR_CODE_SUCCESS; 1452 } 1453 1454 uint8_t hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1455 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1456 if (!hfp_connection) { 1457 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1458 } 1459 1460 switch (hfp_connection->hf_query_operator_state){ 1461 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1462 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1463 break; 1464 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1465 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1466 break; 1467 default: 1468 return ERROR_CODE_COMMAND_DISALLOWED; 1469 } 1470 hfp_hf_run_for_context(hfp_connection); 1471 return ERROR_CODE_SUCCESS; 1472 } 1473 1474 static uint8_t hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1475 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1476 if (!hfp_connection) { 1477 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1478 } 1479 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1480 hfp_hf_run_for_context(hfp_connection); 1481 return ERROR_CODE_SUCCESS; 1482 } 1483 1484 1485 uint8_t hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1486 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1487 } 1488 1489 uint8_t hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1490 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1491 } 1492 1493 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1494 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_HFSF_ESCO_S4)); 1495 } 1496 1497 uint8_t hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1498 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1499 if (!hfp_connection) { 1500 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1501 } 1502 1503 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1504 return ERROR_CODE_COMMAND_DISALLOWED; 1505 } 1506 1507 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 1508 return ERROR_CODE_COMMAND_DISALLOWED; 1509 } 1510 if (has_codec_negotiation_feature(hfp_connection)) { 1511 switch (hfp_connection->codecs_state) { 1512 case HFP_CODECS_W4_AG_COMMON_CODEC: 1513 break; 1514 case HFP_CODECS_EXCHANGED: 1515 hfp_connection->trigger_codec_exchange = 1; 1516 break; 1517 default: 1518 hfp_connection->codec_confirmed = 0; 1519 hfp_connection->suggested_codec = 0; 1520 hfp_connection->negotiated_codec = 0; 1521 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1522 hfp_connection->trigger_codec_exchange = 1; 1523 break; 1524 } 1525 } else { 1526 log_info("no codec negotiation feature, use CVSD"); 1527 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1528 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1529 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1530 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1531 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1532 hfp_connection->establish_audio_connection = 1; 1533 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1534 } 1535 1536 hfp_hf_run_for_context(hfp_connection); 1537 return ERROR_CODE_SUCCESS; 1538 } 1539 1540 uint8_t hfp_hf_release_audio_connection(hci_con_handle_t acl_handle){ 1541 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1542 if (!hfp_connection) { 1543 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1544 } 1545 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 1546 return ERROR_CODE_COMMAND_DISALLOWED; 1547 } 1548 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 1549 if (status == ERROR_CODE_SUCCESS){ 1550 hfp_hf_run_for_context(hfp_connection); 1551 } 1552 return ERROR_CODE_SUCCESS; 1553 } 1554 1555 uint8_t hfp_hf_answer_incoming_call(hci_con_handle_t acl_handle){ 1556 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1557 if (!hfp_connection) { 1558 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1559 } 1560 1561 if (hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1562 hfp_connection->hf_answer_incoming_call = 1; 1563 hfp_hf_run_for_context(hfp_connection); 1564 } else { 1565 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_callsetup_status); 1566 return ERROR_CODE_COMMAND_DISALLOWED; 1567 } 1568 return ERROR_CODE_SUCCESS; 1569 } 1570 1571 uint8_t hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1572 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1573 if (!hfp_connection) { 1574 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1575 } 1576 hfp_connection->hf_send_chup = 1; 1577 hfp_hf_run_for_context(hfp_connection); 1578 return ERROR_CODE_SUCCESS; 1579 } 1580 1581 uint8_t hfp_hf_reject_incoming_call(hci_con_handle_t acl_handle){ 1582 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1583 if (!hfp_connection) { 1584 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1585 } 1586 1587 if (hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1588 hfp_connection->hf_send_chup = 1; 1589 hfp_hf_run_for_context(hfp_connection); 1590 } 1591 return ERROR_CODE_SUCCESS; 1592 } 1593 1594 uint8_t hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1595 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1596 if (!hfp_connection) { 1597 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1598 } 1599 1600 if (hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1601 hfp_connection->hf_send_chld_0 = 1; 1602 hfp_hf_run_for_context(hfp_connection); 1603 } 1604 return ERROR_CODE_SUCCESS; 1605 } 1606 1607 uint8_t hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1608 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1609 if (!hfp_connection) { 1610 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1611 } 1612 1613 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1614 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1615 hfp_connection->hf_send_chld_1 = 1; 1616 hfp_hf_run_for_context(hfp_connection); 1617 } 1618 return ERROR_CODE_SUCCESS; 1619 } 1620 1621 uint8_t hfp_hf_swap_calls(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 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1625 } 1626 1627 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1628 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1629 hfp_connection->hf_send_chld_2 = 1; 1630 hfp_hf_run_for_context(hfp_connection); 1631 } 1632 return ERROR_CODE_SUCCESS; 1633 } 1634 1635 uint8_t hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1636 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1637 if (!hfp_connection) { 1638 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1639 } 1640 1641 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1642 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1643 hfp_connection->hf_send_chld_3 = 1; 1644 hfp_hf_run_for_context(hfp_connection); 1645 } 1646 return ERROR_CODE_SUCCESS; 1647 } 1648 1649 uint8_t hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1650 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1651 if (!hfp_connection) { 1652 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1653 } 1654 1655 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1656 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1657 hfp_connection->hf_send_chld_4 = 1; 1658 hfp_hf_run_for_context(hfp_connection); 1659 } 1660 return ERROR_CODE_SUCCESS; 1661 } 1662 1663 uint8_t hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1664 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1665 if (!hfp_connection) { 1666 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1667 } 1668 1669 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1670 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1671 hfp_connection->hf_send_chld_x = 1; 1672 hfp_connection->hf_send_chld_x_index = 10 + index; 1673 hfp_hf_run_for_context(hfp_connection); 1674 } 1675 return ERROR_CODE_SUCCESS; 1676 } 1677 1678 uint8_t hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 1679 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1680 if (!hfp_connection) { 1681 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1682 } 1683 1684 if ((hfp_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1685 (hfp_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1686 hfp_connection->hf_send_chld_x = 1; 1687 hfp_connection->hf_send_chld_x_index = 20 + index; 1688 hfp_hf_run_for_context(hfp_connection); 1689 } 1690 return ERROR_CODE_SUCCESS; 1691 } 1692 1693 uint8_t hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 1694 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1695 if (!hfp_connection) { 1696 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1697 } 1698 1699 hfp_connection->hf_initiate_outgoing_call = 1; 1700 snprintf(phone_number, sizeof(phone_number), "%s", number); 1701 hfp_hf_run_for_context(hfp_connection); 1702 return ERROR_CODE_SUCCESS; 1703 } 1704 1705 uint8_t hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 1706 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1707 if (!hfp_connection) { 1708 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1709 } 1710 1711 hfp_connection->hf_initiate_memory_dialing = 1; 1712 hfp_connection->memory_id = memory_id; 1713 1714 hfp_hf_run_for_context(hfp_connection); 1715 return ERROR_CODE_SUCCESS; 1716 } 1717 1718 uint8_t hfp_hf_redial_last_number(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 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1722 } 1723 1724 hfp_connection->hf_initiate_redial_last_number = 1; 1725 hfp_hf_run_for_context(hfp_connection); 1726 return ERROR_CODE_SUCCESS; 1727 } 1728 1729 uint8_t hfp_hf_activate_call_waiting_notification(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 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1733 } 1734 1735 hfp_connection->hf_activate_call_waiting_notification = 1; 1736 hfp_hf_run_for_context(hfp_connection); 1737 return ERROR_CODE_SUCCESS; 1738 } 1739 1740 1741 uint8_t hfp_hf_deactivate_call_waiting_notification(hci_con_handle_t acl_handle){ 1742 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1743 if (!hfp_connection) { 1744 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1745 } 1746 1747 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1748 hfp_hf_run_for_context(hfp_connection); 1749 return ERROR_CODE_SUCCESS; 1750 } 1751 1752 1753 uint8_t hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1754 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1755 if (!hfp_connection) { 1756 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1757 } 1758 1759 hfp_connection->hf_activate_calling_line_notification = 1; 1760 hfp_hf_run_for_context(hfp_connection); 1761 return ERROR_CODE_SUCCESS; 1762 } 1763 1764 uint8_t hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1765 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1766 if (!hfp_connection) { 1767 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1768 } 1769 1770 hfp_connection->hf_deactivate_calling_line_notification = 1; 1771 hfp_hf_run_for_context(hfp_connection); 1772 return ERROR_CODE_SUCCESS; 1773 } 1774 1775 static bool hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection_t * hfp_connection){ 1776 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_EC_NR_FUNCTION); 1777 int hf = get_bit(hfp_supported_features, HFP_HFSF_EC_NR_FUNCTION); 1778 return hf && ag; 1779 } 1780 1781 uint8_t hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1782 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1783 if (!hfp_connection) { 1784 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1785 } 1786 if (!hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection)){ 1787 return ERROR_CODE_COMMAND_DISALLOWED; 1788 } 1789 1790 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1791 hfp_hf_run_for_context(hfp_connection); 1792 return ERROR_CODE_SUCCESS; 1793 } 1794 1795 static bool hfp_hf_voice_recognition_supported(hfp_connection_t * hfp_connection, bool enhanced){ 1796 uint8_t hf_vra_flag = HFP_HFSF_VOICE_RECOGNITION_FUNCTION; 1797 uint8_t ag_vra_flag = HFP_AGSF_VOICE_RECOGNITION_FUNCTION; 1798 1799 if (enhanced){ 1800 hf_vra_flag = HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS; 1801 ag_vra_flag = HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS; 1802 } 1803 1804 int ag = get_bit(hfp_connection->remote_supported_features, ag_vra_flag); 1805 int hf = get_bit(hfp_supported_features, hf_vra_flag); 1806 return hf && ag; 1807 } 1808 1809 static uint8_t activate_voice_recognition(hci_con_handle_t acl_handle, bool enhanced){ 1810 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1811 if (!hfp_connection) { 1812 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1813 } 1814 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1815 return ERROR_CODE_COMMAND_DISALLOWED; 1816 } 1817 if (!hfp_hf_voice_recognition_supported(hfp_connection, enhanced)){ 1818 return ERROR_CODE_COMMAND_DISALLOWED; 1819 } 1820 1821 switch (hfp_connection->vra_state){ 1822 case HFP_VRA_VOICE_RECOGNITION_OFF: 1823 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1824 hfp_connection->command = HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION; 1825 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 1826 hfp_connection->enhanced_voice_recognition_enabled = enhanced; 1827 break; 1828 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1829 hfp_connection->activate_voice_recognition = true; 1830 break; 1831 default: 1832 return ERROR_CODE_COMMAND_DISALLOWED; 1833 } 1834 1835 hfp_hf_run_for_context(hfp_connection); 1836 return ERROR_CODE_SUCCESS; 1837 } 1838 1839 1840 static uint8_t deactivate_voice_recognition(hci_con_handle_t acl_handle, bool enhanced){ 1841 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1842 if (!hfp_connection) { 1843 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1844 } 1845 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1846 return ERROR_CODE_COMMAND_DISALLOWED; 1847 } 1848 if (!hfp_hf_voice_recognition_supported(hfp_connection, enhanced)){ 1849 return ERROR_CODE_COMMAND_DISALLOWED; 1850 } 1851 1852 switch (hfp_connection->vra_state){ 1853 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 1854 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 1855 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1856 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1857 hfp_connection->command = HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION; 1858 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 1859 break; 1860 1861 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 1862 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1863 hfp_connection->deactivate_voice_recognition = true; 1864 break; 1865 1866 case HFP_VRA_VOICE_RECOGNITION_OFF: 1867 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1868 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1869 default: 1870 return ERROR_CODE_COMMAND_DISALLOWED; 1871 } 1872 1873 hfp_hf_run_for_context(hfp_connection); 1874 return ERROR_CODE_SUCCESS; 1875 } 1876 1877 uint8_t hfp_hf_activate_voice_recognition(hci_con_handle_t acl_handle){ 1878 return activate_voice_recognition(acl_handle, false); 1879 } 1880 1881 uint8_t hfp_hf_activate_enhanced_voice_recognition(hci_con_handle_t acl_handle){ 1882 return activate_voice_recognition(acl_handle, true); 1883 } 1884 1885 uint8_t hfp_hf_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 1886 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1887 if (!hfp_connection) { 1888 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1889 } 1890 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 1891 return ERROR_CODE_COMMAND_DISALLOWED; 1892 } 1893 if (!hfp_hf_voice_recognition_supported(hfp_connection, true)){ 1894 return ERROR_CODE_COMMAND_DISALLOWED; 1895 } 1896 1897 switch (hfp_connection->vra_state){ 1898 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 1899 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1900 hfp_connection->command = HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION; 1901 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 1902 break; 1903 default: 1904 return ERROR_CODE_COMMAND_DISALLOWED; 1905 } 1906 1907 hfp_hf_run_for_context(hfp_connection); 1908 return ERROR_CODE_SUCCESS; 1909 } 1910 1911 1912 uint8_t hfp_hf_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 1913 return deactivate_voice_recognition(acl_handle, false); 1914 } 1915 1916 uint8_t hfp_hf_deactivate_enhanced_voice_recognition(hci_con_handle_t acl_handle){ 1917 return deactivate_voice_recognition(acl_handle, true); 1918 } 1919 1920 1921 uint8_t hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 1922 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1923 if (!hfp_connection) { 1924 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1925 } 1926 1927 if (hfp_connection->microphone_gain == gain) { 1928 return ERROR_CODE_SUCCESS; 1929 } 1930 1931 if ((gain < 0) || (gain > 15)){ 1932 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 1933 return ERROR_CODE_COMMAND_DISALLOWED; 1934 } 1935 1936 hfp_connection->microphone_gain = gain; 1937 hfp_connection->send_microphone_gain = 1; 1938 hfp_hf_run_for_context(hfp_connection); 1939 return ERROR_CODE_SUCCESS; 1940 } 1941 1942 uint8_t hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 1943 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1944 if (!hfp_connection) { 1945 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1946 } 1947 1948 if (hfp_connection->speaker_gain == gain){ 1949 return ERROR_CODE_SUCCESS; 1950 } 1951 1952 if ((gain < 0) || (gain > 15)){ 1953 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 1954 return ERROR_CODE_COMMAND_DISALLOWED; 1955 } 1956 1957 hfp_connection->speaker_gain = gain; 1958 hfp_connection->send_speaker_gain = 1; 1959 hfp_hf_run_for_context(hfp_connection); 1960 return ERROR_CODE_SUCCESS; 1961 } 1962 1963 uint8_t hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 1964 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1965 if (!hfp_connection) { 1966 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1967 } 1968 hfp_connection->hf_send_dtmf_code = code; 1969 hfp_hf_run_for_context(hfp_connection); 1970 return ERROR_CODE_SUCCESS; 1971 } 1972 1973 uint8_t hfp_hf_request_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 1974 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1975 if (!hfp_connection) { 1976 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1977 } 1978 hfp_connection->hf_send_binp = 1; 1979 hfp_hf_run_for_context(hfp_connection); 1980 return ERROR_CODE_SUCCESS; 1981 } 1982 1983 uint8_t hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 1984 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1985 if (!hfp_connection) { 1986 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1987 } 1988 hfp_connection->hf_send_clcc = 1; 1989 hfp_hf_run_for_context(hfp_connection); 1990 return ERROR_CODE_SUCCESS; 1991 } 1992 1993 1994 uint8_t hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 1995 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1996 if (!hfp_connection) { 1997 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1998 } 1999 hfp_connection->hf_send_rrh = 1; 2000 hfp_connection->hf_send_rrh_command = '?'; 2001 hfp_hf_run_for_context(hfp_connection); 2002 return ERROR_CODE_SUCCESS; 2003 } 2004 2005 uint8_t hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 2006 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2007 if (!hfp_connection) { 2008 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2009 } 2010 hfp_connection->hf_send_rrh = 1; 2011 hfp_connection->hf_send_rrh_command = '0'; 2012 hfp_hf_run_for_context(hfp_connection); 2013 return ERROR_CODE_SUCCESS; 2014 } 2015 2016 uint8_t hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 2017 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2018 if (!hfp_connection) { 2019 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2020 } 2021 hfp_connection->hf_send_rrh = 1; 2022 hfp_connection->hf_send_rrh_command = '1'; 2023 hfp_hf_run_for_context(hfp_connection); 2024 return ERROR_CODE_SUCCESS; 2025 } 2026 2027 uint8_t hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 2028 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2029 if (!hfp_connection) { 2030 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2031 } 2032 hfp_connection->hf_send_rrh = 1; 2033 hfp_connection->hf_send_rrh_command = '2'; 2034 hfp_hf_run_for_context(hfp_connection); 2035 return ERROR_CODE_SUCCESS; 2036 } 2037 2038 uint8_t hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 2039 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2040 if (!hfp_connection) { 2041 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2042 } 2043 hfp_connection->hf_send_cnum = 1; 2044 hfp_hf_run_for_context(hfp_connection); 2045 return ERROR_CODE_SUCCESS; 2046 } 2047 2048 uint8_t hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 2049 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2050 if (!hfp_connection) { 2051 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2052 } 2053 // find index for assigned number 2054 int i; 2055 for (i = 0; i < hfp_indicators_nr ; i++){ 2056 if (hfp_indicators[i] == assigned_number){ 2057 // set value 2058 hfp_indicators_value[i] = value; 2059 // mark for update 2060 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 2061 hfp_connection->generic_status_update_bitmap |= (1<<i); 2062 // send update 2063 hfp_hf_run_for_context(hfp_connection); 2064 } 2065 return ERROR_CODE_SUCCESS; 2066 } 2067 } 2068 return ERROR_CODE_SUCCESS; 2069 } 2070 2071 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 2072 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2073 if (!hfp_connection) { 2074 return 0; 2075 } 2076 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 2077 } 2078 2079 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){ 2080 if (!name){ 2081 name = default_hfp_hf_service_name; 2082 } 2083 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 2084 2085 // Construct SupportedFeatures for SDP bitmap: 2086 // 2087 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2088 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2089 // 2090 // Wide band speech (bit 5) requires Codec negotiation 2091 // 2092 uint16_t sdp_features = supported_features & 0x1f; 2093 if ( (wide_band_speech != 0) && (supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION))){ 2094 sdp_features |= 1 << 5; 2095 } 2096 2097 if (supported_features & (1 << HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2098 sdp_features |= 1 << 6; 2099 } 2100 2101 if (supported_features & (1 << HFP_HFSF_VOICE_RECOGNITION_TEXT)){ 2102 sdp_features |= 1 << 7; 2103 } 2104 2105 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2106 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2107 } 2108 2109 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 2110 btstack_assert(callback != NULL); 2111 2112 hfp_hf_callback = callback; 2113 hfp_set_hf_callback(callback); 2114 } 2115