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 hfp_hf_default_service_name[] = "Hands-Free unit"; 70 71 // globals 72 73 // higher layer callbacks 74 static btstack_packet_handler_t hfp_hf_callback; 75 76 static btstack_packet_callback_registration_t hfp_hf_hci_event_callback_registration; 77 78 static uint16_t hfp_hf_supported_features; 79 static uint8_t hfp_hf_codecs_nr; 80 static uint8_t hfp_hf_codecs[HFP_MAX_NUM_CODECS]; 81 82 static uint8_t hfp_hf_indicators_nr; 83 static uint8_t hfp_hf_indicators[HFP_MAX_NUM_INDICATORS]; 84 static uint32_t hfp_hf_indicators_value[HFP_MAX_NUM_INDICATORS]; 85 86 static uint8_t hfp_hf_speaker_gain; 87 static uint8_t hfp_hf_microphone_gain; 88 89 static hfp_call_status_t hfp_hf_call_status; 90 static hfp_callsetup_status_t hfp_hf_callsetup_status; 91 static hfp_callheld_status_t hfp_hf_callheld_status; 92 93 static char hfp_hf_phone_number[25]; 94 95 96 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 97 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 98 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 99 return hf && ag; 100 } 101 102 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 103 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_THREE_WAY_CALLING); 104 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_THREE_WAY_CALLING); 105 return hf && ag; 106 } 107 108 109 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 110 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_HF_INDICATORS); 111 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_HF_INDICATORS); 112 return hf && ag; 113 } 114 115 static bool hfp_hf_vra_flag_supported(hfp_connection_t * hfp_connection){ 116 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION); 117 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION); 118 return hf && ag; 119 } 120 121 static bool hfp_hf_enhanced_vra_flag_supported(hfp_connection_t * hfp_connection){ 122 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS); 123 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS); 124 return hf && ag; 125 } 126 127 static hfp_connection_t * get_hfp_hf_connection_context_for_acl_handle(uint16_t handle){ 128 btstack_linked_list_iterator_t it; 129 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 130 while (btstack_linked_list_iterator_has_next(&it)){ 131 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 132 if (hfp_connection->acl_handle != handle) continue; 133 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 134 return hfp_connection; 135 } 136 return NULL; 137 } 138 139 /* emit functinos */ 140 141 static void hfp_hf_emit_subscriber_information(const hfp_connection_t * hfp_connection, uint8_t status){ 142 if (hfp_hf_callback == NULL) return; 143 uint8_t event[33]; 144 event[0] = HCI_EVENT_HFP_META; 145 event[1] = sizeof(event) - 2; 146 event[2] = HFP_SUBEVENT_SUBSCRIBER_NUMBER_INFORMATION; 147 little_endian_store_16(event, 3, hfp_connection->acl_handle); 148 event[5] = status; 149 event[6] = hfp_connection->bnip_type; 150 uint16_t size = btstack_min(strlen(hfp_connection->bnip_number), sizeof(event) - 8); 151 strncpy((char*)&event[7], hfp_connection->bnip_number, size); 152 event[7 + size] = 0; 153 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 154 } 155 156 static void hfp_hf_emit_type_and_number(const hfp_connection_t * hfp_connection, uint8_t event_subtype){ 157 if (hfp_hf_callback == NULL) return; 158 uint8_t event[32]; 159 event[0] = HCI_EVENT_HFP_META; 160 event[1] = sizeof(event) - 2; 161 event[2] = event_subtype; 162 little_endian_store_16(event, 3, hfp_connection->acl_handle); 163 event[5] = hfp_connection->bnip_type; 164 uint16_t size = btstack_min(strlen(hfp_connection->bnip_number), sizeof(event) - 7); 165 strncpy((char*)&event[6], hfp_connection->bnip_number, size); 166 event[6 + size] = 0; 167 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 168 } 169 170 static void hfp_hf_emit_enhanced_call_status(const hfp_connection_t * hfp_connection){ 171 if (hfp_hf_callback == NULL) return; 172 uint8_t event[38]; 173 int pos = 0; 174 event[pos++] = HCI_EVENT_HFP_META; 175 event[pos++] = sizeof(event) - 2; 176 event[pos++] = HFP_SUBEVENT_ENHANCED_CALL_STATUS; 177 little_endian_store_16(event, pos, hfp_connection->acl_handle); 178 pos += 2; 179 event[pos++] = hfp_connection->clcc_idx; 180 event[pos++] = hfp_connection->clcc_dir; 181 event[pos++] = hfp_connection->clcc_status; 182 event[pos++] = hfp_connection->clcc_mode; 183 event[pos++] = hfp_connection->clcc_mpty; 184 event[pos++] = hfp_connection->bnip_type; 185 uint16_t size = btstack_min(strlen(hfp_connection->bnip_number), sizeof(event) - pos - 1); 186 strncpy((char*)&event[pos], hfp_connection->bnip_number, size); 187 pos += size; 188 event[pos++] = 0; 189 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 190 } 191 192 193 static void hfp_emit_ag_indicator_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 194 if (hfp_hf_callback == NULL) return; 195 uint8_t event[12+HFP_MAX_INDICATOR_DESC_SIZE+1]; 196 int pos = 0; 197 event[pos++] = HCI_EVENT_HFP_META; 198 event[pos++] = sizeof(event) - 2; 199 event[pos++] = HFP_SUBEVENT_AG_INDICATOR_STATUS_CHANGED; 200 little_endian_store_16(event, pos, hfp_connection->acl_handle); 201 pos += 2; 202 event[pos++] = indicator->index; 203 event[pos++] = indicator->status; 204 event[pos++] = indicator->min_range; 205 event[pos++] = indicator->max_range; 206 event[pos++] = indicator->mandatory; 207 event[pos++] = indicator->enabled; 208 event[pos++] = indicator->status_changed; 209 strncpy((char*)&event[pos], indicator->name, HFP_MAX_INDICATOR_DESC_SIZE); 210 pos += HFP_MAX_INDICATOR_DESC_SIZE; 211 event[pos] = 0; 212 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 213 } 214 215 static void hfp_emit_network_operator_event(const hfp_connection_t * hfp_connection){ 216 if (hfp_hf_callback == NULL) return; 217 uint8_t event[7+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE+1]; 218 event[0] = HCI_EVENT_HFP_META; 219 event[1] = sizeof(event) - 2; 220 event[2] = HFP_SUBEVENT_NETWORK_OPERATOR_CHANGED; 221 little_endian_store_16(event, 3, hfp_connection->acl_handle); 222 event[5] = hfp_connection->network_operator.mode; 223 event[6] = hfp_connection->network_operator.format; 224 strncpy((char*)&event[7], hfp_connection->network_operator.name, HFP_MAX_NETWORK_OPERATOR_NAME_SIZE); 225 event[7+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE] = 0; 226 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 227 } 228 229 230 static void hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection_t * hfp_connection){ 231 btstack_assert(hfp_connection != NULL); 232 uint8_t event[HFP_MAX_VR_TEXT_SIZE + 11]; 233 int pos = 0; 234 event[pos++] = HCI_EVENT_HFP_META; 235 event[pos++] = sizeof(event) - 2; 236 event[pos++] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE; 237 little_endian_store_16(event, pos, hfp_connection->acl_handle); 238 pos += 2; 239 little_endian_store_16(event, pos, hfp_connection->ag_msg.text_id); 240 pos += 2; 241 event[pos++] = hfp_connection->ag_msg.text_type; 242 event[pos++] = hfp_connection->ag_msg.text_operation; 243 244 // length, zero ending is already in message 245 uint8_t * value = &hfp_connection->line_buffer[0]; 246 uint16_t value_length = hfp_connection->ag_vra_msg_length; 247 248 little_endian_store_16(event, pos, value_length); 249 pos += 2; 250 memcpy(&event[pos], value, value_length); 251 pos += value_length; 252 253 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 254 } 255 256 /* send commands */ 257 258 static inline int hfp_hf_send_cmd(uint16_t cid, const char * cmd){ 259 char buffer[20]; 260 snprintf(buffer, sizeof(buffer), "AT%s\r", cmd); 261 return send_str_over_rfcomm(cid, buffer); 262 } 263 264 static inline int hfp_hf_send_cmd_with_mark(uint16_t cid, const char * cmd, const char * mark){ 265 char buffer[20]; 266 snprintf(buffer, sizeof(buffer), "AT%s%s\r", cmd, mark); 267 return send_str_over_rfcomm(cid, buffer); 268 } 269 270 static inline int hfp_hf_send_cmd_with_int(uint16_t cid, const char * cmd, uint16_t value){ 271 char buffer[40]; 272 snprintf(buffer, sizeof(buffer), "AT%s=%d\r", cmd, value); 273 return send_str_over_rfcomm(cid, buffer); 274 } 275 276 static int hfp_hf_cmd_notify_on_codecs(uint16_t cid){ 277 char buffer[30]; 278 const int size = sizeof(buffer); 279 int offset = snprintf(buffer, size, "AT%s=", HFP_AVAILABLE_CODECS); 280 offset += join(buffer+offset, size-offset, hfp_hf_codecs, hfp_hf_codecs_nr); 281 offset += snprintf(buffer+offset, size-offset, "\r"); 282 return send_str_over_rfcomm(cid, buffer); 283 } 284 285 static int hfp_hf_cmd_activate_status_update_for_ag_indicator(uint16_t cid, uint32_t indicators_status, int indicators_nr){ 286 char buffer[50]; 287 const int size = sizeof(buffer); 288 int offset = snprintf(buffer, size, "AT%s=", HFP_UPDATE_ENABLE_STATUS_FOR_INDIVIDUAL_AG_INDICATORS); 289 offset += join_bitmap(buffer+offset, size-offset, indicators_status, indicators_nr); 290 offset += snprintf(buffer+offset, size-offset, "\r"); 291 return send_str_over_rfcomm(cid, buffer); 292 } 293 294 static int hfp_hf_cmd_list_supported_generic_status_indicators(uint16_t cid){ 295 char buffer[30]; 296 const int size = sizeof(buffer); 297 int offset = snprintf(buffer, size, "AT%s=", HFP_GENERIC_STATUS_INDICATOR); 298 offset += join(buffer+offset, size-offset, hfp_hf_indicators, hfp_hf_indicators_nr); 299 offset += snprintf(buffer+offset, size-offset, "\r"); 300 return send_str_over_rfcomm(cid, buffer); 301 } 302 303 static int hfp_hf_cmd_activate_status_update_for_all_ag_indicators(uint16_t cid, uint8_t activate){ 304 char buffer[20]; 305 snprintf(buffer, sizeof(buffer), "AT%s=3,0,0,%d\r", HFP_ENABLE_STATUS_UPDATE_FOR_AG_INDICATORS, activate); 306 return send_str_over_rfcomm(cid, buffer); 307 } 308 309 static int hfp_hf_initiate_outgoing_call_cmd(uint16_t cid){ 310 char buffer[40]; 311 snprintf(buffer, sizeof(buffer), "%s%s;\r", HFP_CALL_PHONE_NUMBER, hfp_hf_phone_number); 312 return send_str_over_rfcomm(cid, buffer); 313 } 314 315 static int hfp_hf_send_memory_dial_cmd(uint16_t cid, int memory_id){ 316 char buffer[40]; 317 snprintf(buffer, sizeof(buffer), "%s>%d;\r", HFP_CALL_PHONE_NUMBER, memory_id); 318 return send_str_over_rfcomm(cid, buffer); 319 } 320 321 static int hfp_hf_send_chld(uint16_t cid, unsigned int number){ 322 char buffer[40]; 323 snprintf(buffer, sizeof(buffer), "AT%s=%u\r", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, number); 324 return send_str_over_rfcomm(cid, buffer); 325 } 326 327 static int hfp_hf_send_dtmf(uint16_t cid, char code){ 328 char buffer[20]; 329 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", HFP_TRANSMIT_DTMF_CODES, code); 330 return send_str_over_rfcomm(cid, buffer); 331 } 332 333 static int hfp_hf_cmd_ata(uint16_t cid){ 334 return send_str_over_rfcomm(cid, (char *) "ATA\r"); 335 } 336 337 static int hfp_hf_cmd_exchange_supported_features(uint16_t cid){ 338 return hfp_hf_send_cmd_with_int(cid, HFP_SUPPORTED_FEATURES, hfp_hf_supported_features); 339 } 340 341 static int hfp_hf_cmd_retrieve_indicators(uint16_t cid){ 342 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "=?"); 343 } 344 345 static int hfp_hf_cmd_retrieve_indicators_status(uint16_t cid){ 346 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "?"); 347 } 348 349 static int hfp_hf_cmd_retrieve_can_hold_call(uint16_t cid){ 350 return hfp_hf_send_cmd_with_mark(cid, HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, "=?"); 351 } 352 353 static int hfp_hf_cmd_retrieve_supported_generic_status_indicators(uint16_t cid){ 354 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "=?"); 355 } 356 357 static int hfp_hf_cmd_list_initital_supported_generic_status_indicators(uint16_t cid){ 358 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "?"); 359 } 360 361 static int hfp_hf_cmd_query_operator_name_format(uint16_t cid){ 362 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "=3,0"); 363 } 364 365 static int hfp_hf_cmd_query_operator_name(uint16_t cid){ 366 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "?"); 367 } 368 369 static int hfp_hf_cmd_trigger_codec_connection_setup(uint16_t cid){ 370 return hfp_hf_send_cmd(cid, HFP_TRIGGER_CODEC_CONNECTION_SETUP); 371 } 372 373 static int hfp_hf_set_microphone_gain_cmd(uint16_t cid, int gain){ 374 return hfp_hf_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 375 } 376 377 static int hfp_hf_set_speaker_gain_cmd(uint16_t cid, int gain){ 378 return hfp_hf_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 379 } 380 381 static int hfp_hf_set_calling_line_notification_cmd(uint16_t cid, uint8_t activate){ 382 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CLIP, activate); 383 } 384 385 static int hfp_hf_set_voice_recognition_notification_cmd(uint16_t cid, uint8_t activate){ 386 return hfp_hf_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate); 387 } 388 389 static int hfp_hf_set_call_waiting_notification_cmd(uint16_t cid, uint8_t activate){ 390 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CALL_WAITING_NOTIFICATION, activate); 391 } 392 393 static int hfp_hf_cmd_confirm_codec(uint16_t cid, uint8_t codec){ 394 return hfp_hf_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 395 } 396 397 static int hfp_hf_cmd_enable_extended_audio_gateway_error_report(uint16_t cid, uint8_t enable){ 398 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR, enable); 399 } 400 401 static int hfp_hf_send_redial_last_number_cmd(uint16_t cid){ 402 return hfp_hf_send_cmd(cid, HFP_REDIAL_LAST_NUMBER); 403 } 404 405 static int hfp_hf_send_chup(uint16_t cid){ 406 return hfp_hf_send_cmd(cid, HFP_HANG_UP_CALL); 407 } 408 409 static int hfp_hf_send_binp(uint16_t cid){ 410 return hfp_hf_send_cmd_with_mark(cid, HFP_PHONE_NUMBER_FOR_VOICE_TAG, "=1"); 411 } 412 413 static int hfp_hf_send_clcc(uint16_t cid){ 414 return hfp_hf_send_cmd(cid, HFP_LIST_CURRENT_CALLS); 415 } 416 417 /* state machines */ 418 419 static int hfp_hf_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 420 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 421 if (hfp_connection->ok_pending) return 0; 422 int done = 1; 423 log_info("hfp_hf_run_for_context_service_level_connection state %d\n", hfp_connection->state); 424 switch (hfp_connection->state){ 425 case HFP_EXCHANGE_SUPPORTED_FEATURES: 426 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_hf_codecs, &hfp_hf_codecs_nr); 427 hfp_connection->state = HFP_W4_EXCHANGE_SUPPORTED_FEATURES; 428 hfp_hf_cmd_exchange_supported_features(hfp_connection->rfcomm_cid); 429 break; 430 case HFP_NOTIFY_ON_CODECS: 431 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 432 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 433 break; 434 case HFP_RETRIEVE_INDICATORS: 435 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 436 hfp_hf_cmd_retrieve_indicators(hfp_connection->rfcomm_cid); 437 break; 438 case HFP_RETRIEVE_INDICATORS_STATUS: 439 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 440 hfp_hf_cmd_retrieve_indicators_status(hfp_connection->rfcomm_cid); 441 break; 442 case HFP_ENABLE_INDICATORS_STATUS_UPDATE: 443 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 444 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, 1); 445 break; 446 case HFP_RETRIEVE_CAN_HOLD_CALL: 447 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 448 hfp_hf_cmd_retrieve_can_hold_call(hfp_connection->rfcomm_cid); 449 break; 450 case HFP_LIST_GENERIC_STATUS_INDICATORS: 451 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 452 hfp_hf_cmd_list_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 453 break; 454 case HFP_RETRIEVE_GENERIC_STATUS_INDICATORS: 455 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 456 hfp_hf_cmd_retrieve_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 457 break; 458 case HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 459 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 460 hfp_hf_cmd_list_initital_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 461 break; 462 default: 463 done = 0; 464 break; 465 } 466 return done; 467 } 468 469 470 static int hfp_hf_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 471 if (hfp_connection->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 472 if (hfp_connection->ok_pending){ 473 return 0; 474 } 475 int done = 0; 476 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 477 hfp_connection->ok_pending = 1; 478 done = 1; 479 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, hfp_connection->enable_status_update_for_ag_indicators); 480 return done; 481 }; 482 if (hfp_connection->change_status_update_for_individual_ag_indicators){ 483 hfp_connection->ok_pending = 1; 484 done = 1; 485 hfp_hf_cmd_activate_status_update_for_ag_indicator(hfp_connection->rfcomm_cid, 486 hfp_connection->ag_indicators_status_update_bitmap, 487 hfp_connection->ag_indicators_nr); 488 return done; 489 } 490 491 switch (hfp_connection->hf_query_operator_state){ 492 case HFP_HF_QUERY_OPERATOR_SET_FORMAT: 493 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK; 494 hfp_connection->ok_pending = 1; 495 hfp_hf_cmd_query_operator_name_format(hfp_connection->rfcomm_cid); 496 return 1; 497 case HFP_HF_QUERY_OPERATOR_SEND_QUERY: 498 hfp_connection->hf_query_operator_state = HPF_HF_QUERY_OPERATOR_W4_RESULT; 499 hfp_connection->ok_pending = 1; 500 hfp_hf_cmd_query_operator_name(hfp_connection->rfcomm_cid); 501 return 1; 502 default: 503 break; 504 } 505 506 if (hfp_connection->enable_extended_audio_gateway_error_report){ 507 hfp_connection->ok_pending = 1; 508 done = 1; 509 hfp_hf_cmd_enable_extended_audio_gateway_error_report(hfp_connection->rfcomm_cid, hfp_connection->enable_extended_audio_gateway_error_report); 510 return done; 511 } 512 513 return done; 514 } 515 516 static int hfp_hf_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 517 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 518 return 0; 519 } 520 int done = 0; 521 522 if (hfp_connection->ok_pending == 1){ 523 return 0; 524 } 525 // voice recognition activated from AG 526 if (hfp_connection->command == HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION){ 527 switch(hfp_connection->vra_state_requested){ 528 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 529 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 530 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 531 // ignore AG command, continue to wait for OK 532 return 0; 533 534 default: 535 if (hfp_connection->ag_vra_msg_length > 0){ 536 hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection); 537 hfp_connection->ag_vra_msg_length = 0; 538 break; 539 } 540 switch(hfp_connection->ag_vra_state){ 541 case HFP_VOICE_RECOGNITION_STATE_AG_READY: 542 switch (hfp_connection->ag_vra_status){ 543 case 0: 544 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 545 break; 546 case 1: 547 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 548 break; 549 case 2: 550 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 551 break; 552 default: 553 break; 554 } 555 break; 556 default: 557 // state messages from AG 558 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 559 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 560 break; 561 } 562 break; 563 } 564 hfp_connection->command = HFP_CMD_NONE; 565 } 566 567 568 switch (hfp_connection->vra_state_requested){ 569 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 570 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 0); 571 if (done != 0){ 572 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 573 hfp_connection->ok_pending = 1; 574 } 575 return 1; 576 577 578 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 579 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 1); 580 if (done != 0){ 581 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 582 hfp_connection->ok_pending = 1; 583 return 1; 584 } 585 break; 586 587 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 588 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 2); 589 if (done != 0){ 590 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 591 hfp_connection->ok_pending = 1; 592 return 1; 593 } 594 break; 595 596 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 597 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 598 hfp_connection->vra_state_requested = hfp_connection->vra_state; 599 hfp_connection->activate_voice_recognition = false; 600 if (hfp_connection->activate_voice_recognition){ 601 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 602 hfp_hf_activate_voice_recognition(hfp_connection->acl_handle); 603 } else { 604 hfp_emit_voice_recognition_disabled(hfp_connection, ERROR_CODE_SUCCESS); 605 } 606 break; 607 608 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 609 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 610 hfp_connection->vra_state_requested = hfp_connection->vra_state; 611 hfp_connection->activate_voice_recognition = false; 612 if (hfp_connection->deactivate_voice_recognition){ 613 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 614 } else { 615 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 616 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 617 } 618 break; 619 620 621 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 622 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 623 hfp_connection->vra_state_requested = hfp_connection->vra_state; 624 hfp_connection->activate_voice_recognition = false; 625 if (hfp_connection->deactivate_voice_recognition){ 626 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 627 } else { 628 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 629 } 630 break; 631 632 default: 633 break; 634 } 635 return done; 636 } 637 638 639 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 640 if (hfp_connection->ok_pending) return 0; 641 642 if (hfp_connection->trigger_codec_exchange){ 643 hfp_connection->trigger_codec_exchange = 0; 644 645 hfp_connection->ok_pending = 1; 646 hfp_hf_cmd_trigger_codec_connection_setup(hfp_connection->rfcomm_cid); 647 return 1; 648 } 649 650 if (hfp_connection->hf_send_codec_confirm){ 651 hfp_connection->hf_send_codec_confirm = false; 652 653 hfp_connection->ok_pending = 1; 654 hfp_hf_cmd_confirm_codec(hfp_connection->rfcomm_cid, hfp_connection->codec_confirmed); 655 return 1; 656 } 657 658 if (hfp_connection->hf_send_supported_codecs){ 659 hfp_connection->hf_send_supported_codecs = false; 660 661 hfp_connection->ok_pending = 1; 662 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 663 return 1; 664 } 665 666 return 0; 667 } 668 669 static int hfp_hf_run_for_audio_connection(hfp_connection_t * hfp_connection){ 670 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 671 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 672 673 if (hfp_connection->release_audio_connection){ 674 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 675 hfp_connection->release_audio_connection = 0; 676 gap_disconnect(hfp_connection->sco_handle); 677 return 1; 678 } 679 680 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 681 682 // run codecs exchange 683 int done = codecs_exchange_state_machine(hfp_connection); 684 if (done) return 1; 685 686 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 687 if (hfp_connection->establish_audio_connection){ 688 hfp_connection->state = HFP_W4_SCO_CONNECTED; 689 hfp_connection->establish_audio_connection = 0; 690 hfp_setup_synchronous_connection(hfp_connection); 691 return 1; 692 } 693 return 0; 694 } 695 696 697 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 698 699 if (hfp_connection->ok_pending) return 0; 700 701 if (hfp_connection->hf_answer_incoming_call){ 702 hfp_hf_cmd_ata(hfp_connection->rfcomm_cid); 703 hfp_connection->hf_answer_incoming_call = 0; 704 return 1; 705 } 706 return 0; 707 } 708 709 static void hfp_hf_run_for_context(hfp_connection_t * hfp_connection){ 710 711 btstack_assert(hfp_connection != NULL); 712 btstack_assert(hfp_connection->local_role == HFP_ROLE_HF); 713 714 // during SDP query, RFCOMM CID is not set 715 if (hfp_connection->rfcomm_cid == 0) return; 716 717 // assert command could be sent 718 if (hci_can_send_command_packet_now() == 0) return; 719 720 #ifdef ENABLE_CC256X_ASSISTED_HFP 721 // WBS Disassociate 722 if (hfp_connection->cc256x_send_wbs_disassociate){ 723 hfp_connection->cc256x_send_wbs_disassociate = false; 724 hci_send_cmd(&hci_ti_wbs_disassociate); 725 return; 726 } 727 // Write Codec Config 728 if (hfp_connection->cc256x_send_write_codec_config){ 729 hfp_connection->cc256x_send_write_codec_config = false; 730 hfp_cc256x_write_codec_config(hfp_connection); 731 return; 732 } 733 // WBS Associate 734 if (hfp_connection->cc256x_send_wbs_associate){ 735 hfp_connection->cc256x_send_wbs_associate = false; 736 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 737 return; 738 } 739 #endif 740 #ifdef ENABLE_BCM_PCM_WBS 741 // Enable WBS 742 if (hfp_connection->bcm_send_enable_wbs){ 743 hfp_connection->bcm_send_enable_wbs = false; 744 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 745 return; 746 } 747 // Write I2S/PCM params 748 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 749 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 750 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 751 return; 752 } 753 // Disable WBS 754 if (hfp_connection->bcm_send_disable_wbs){ 755 hfp_connection->bcm_send_disable_wbs = false; 756 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 757 return; 758 } 759 #endif 760 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 761 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 762 hfp_finalize_connection_context(hfp_connection); 763 return; 764 } 765 #endif 766 767 if (hfp_connection->accept_sco){ 768 bool incoming_eSCO = hfp_connection->accept_sco == 2; 769 hfp_connection->accept_sco = 0; 770 // notify about codec selection if not done already 771 if (hfp_connection->negotiated_codec == 0){ 772 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 773 } 774 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 775 return; 776 } 777 778 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 779 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 780 return; 781 } 782 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection); 783 if (!done){ 784 done = hfp_hf_run_for_context_service_level_connection_queries(hfp_connection); 785 } 786 if (!done){ 787 done = hfp_hf_run_for_audio_connection(hfp_connection); 788 } 789 if (!done){ 790 done = hfp_hf_voice_recognition_state_machine(hfp_connection); 791 } 792 if (!done){ 793 done = call_setup_state_machine(hfp_connection); 794 } 795 796 // don't send a new command while ok still pending or SLC is not established 797 if (hfp_connection->ok_pending || (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED)){ 798 return; 799 } 800 801 if (hfp_connection->send_microphone_gain){ 802 hfp_connection->send_microphone_gain = 0; 803 hfp_connection->ok_pending = 1; 804 hfp_hf_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 805 return; 806 } 807 808 if (hfp_connection->send_speaker_gain){ 809 hfp_connection->send_speaker_gain = 0; 810 hfp_connection->ok_pending = 1; 811 hfp_hf_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 812 return; 813 } 814 815 if (hfp_connection->hf_deactivate_calling_line_notification){ 816 hfp_connection->hf_deactivate_calling_line_notification = 0; 817 hfp_connection->ok_pending = 1; 818 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 0); 819 return; 820 } 821 822 if (hfp_connection->hf_activate_calling_line_notification){ 823 hfp_connection->hf_activate_calling_line_notification = 0; 824 hfp_connection->ok_pending = 1; 825 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 1); 826 return; 827 } 828 829 if (hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction){ 830 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 0; 831 hfp_connection->response_pending_for_command = HFP_CMD_TURN_OFF_EC_AND_NR; 832 hfp_connection->ok_pending = 1; 833 hfp_hf_send_cmd_with_int(hfp_connection->rfcomm_cid, HFP_TURN_OFF_EC_AND_NR, 0); 834 return; 835 } 836 837 if (hfp_connection->hf_deactivate_call_waiting_notification){ 838 hfp_connection->hf_deactivate_call_waiting_notification = 0; 839 hfp_connection->ok_pending = 1; 840 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 0); 841 return; 842 } 843 844 if (hfp_connection->hf_activate_call_waiting_notification){ 845 hfp_connection->hf_activate_call_waiting_notification = 0; 846 hfp_connection->ok_pending = 1; 847 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 1); 848 return; 849 } 850 851 if (hfp_connection->hf_initiate_outgoing_call){ 852 hfp_connection->hf_initiate_outgoing_call = 0; 853 hfp_connection->ok_pending = 1; 854 hfp_hf_initiate_outgoing_call_cmd(hfp_connection->rfcomm_cid); 855 return; 856 } 857 858 if (hfp_connection->hf_initiate_memory_dialing){ 859 hfp_connection->hf_initiate_memory_dialing = 0; 860 hfp_connection->ok_pending = 1; 861 hfp_hf_send_memory_dial_cmd(hfp_connection->rfcomm_cid, hfp_connection->memory_id); 862 return; 863 } 864 865 if (hfp_connection->hf_initiate_redial_last_number){ 866 hfp_connection->hf_initiate_redial_last_number = 0; 867 hfp_connection->ok_pending = 1; 868 hfp_hf_send_redial_last_number_cmd(hfp_connection->rfcomm_cid); 869 return; 870 } 871 872 if (hfp_connection->hf_send_chup){ 873 hfp_connection->hf_send_chup = 0; 874 hfp_connection->ok_pending = 1; 875 hfp_hf_send_chup(hfp_connection->rfcomm_cid); 876 return; 877 } 878 879 if (hfp_connection->hf_send_chld_0){ 880 hfp_connection->hf_send_chld_0 = 0; 881 hfp_connection->ok_pending = 1; 882 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 0); 883 return; 884 } 885 886 if (hfp_connection->hf_send_chld_1){ 887 hfp_connection->hf_send_chld_1 = 0; 888 hfp_connection->ok_pending = 1; 889 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 1); 890 return; 891 } 892 893 if (hfp_connection->hf_send_chld_2){ 894 hfp_connection->hf_send_chld_2 = 0; 895 hfp_connection->ok_pending = 1; 896 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 2); 897 return; 898 } 899 900 if (hfp_connection->hf_send_chld_3){ 901 hfp_connection->hf_send_chld_3 = 0; 902 hfp_connection->ok_pending = 1; 903 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 3); 904 return; 905 } 906 907 if (hfp_connection->hf_send_chld_4){ 908 hfp_connection->hf_send_chld_4 = 0; 909 hfp_connection->ok_pending = 1; 910 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 4); 911 return; 912 } 913 914 if (hfp_connection->hf_send_chld_x){ 915 hfp_connection->hf_send_chld_x = 0; 916 hfp_connection->ok_pending = 1; 917 hfp_hf_send_chld(hfp_connection->rfcomm_cid, hfp_connection->hf_send_chld_x_index); 918 return; 919 } 920 921 if (hfp_connection->hf_send_dtmf_code){ 922 char code = hfp_connection->hf_send_dtmf_code; 923 hfp_connection->hf_send_dtmf_code = 0; 924 hfp_connection->ok_pending = 1; 925 hfp_hf_send_dtmf(hfp_connection->rfcomm_cid, code); 926 return; 927 } 928 929 if (hfp_connection->hf_send_binp){ 930 hfp_connection->hf_send_binp = 0; 931 hfp_connection->ok_pending = 1; 932 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 933 return; 934 } 935 936 if (hfp_connection->hf_send_clcc){ 937 hfp_connection->hf_send_clcc = 0; 938 hfp_connection->ok_pending = 1; 939 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 940 return; 941 } 942 943 if (hfp_connection->hf_send_rrh){ 944 hfp_connection->hf_send_rrh = 0; 945 char buffer[20]; 946 switch (hfp_connection->hf_send_rrh_command){ 947 case '?': 948 snprintf(buffer, sizeof(buffer), "AT%s?\r", 949 HFP_RESPONSE_AND_HOLD); 950 buffer[sizeof(buffer) - 1] = 0; 951 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 952 return; 953 case '0': 954 case '1': 955 case '2': 956 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", 957 HFP_RESPONSE_AND_HOLD, 958 hfp_connection->hf_send_rrh_command); 959 buffer[sizeof(buffer) - 1] = 0; 960 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 961 return; 962 default: 963 break; 964 } 965 return; 966 } 967 968 if (hfp_connection->hf_send_cnum){ 969 hfp_connection->hf_send_cnum = 0; 970 char buffer[20]; 971 snprintf(buffer, sizeof(buffer), "AT%s\r", 972 HFP_SUBSCRIBER_NUMBER_INFORMATION); 973 buffer[sizeof(buffer) - 1] = 0; 974 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 975 return; 976 } 977 978 // update HF indicators 979 if (hfp_connection->generic_status_update_bitmap){ 980 int i; 981 for (i=0; i < hfp_hf_indicators_nr; i++){ 982 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 983 if (hfp_connection->generic_status_indicators[i].state){ 984 hfp_connection->ok_pending = 1; 985 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 986 char buffer[30]; 987 snprintf(buffer, sizeof(buffer), "AT%s=%u,%u\r", 988 HFP_TRANSFER_HF_INDICATOR_STATUS, 989 hfp_hf_indicators[i], 990 (unsigned int)hfp_hf_indicators_value[i]); 991 buffer[sizeof(buffer) - 1] = 0; 992 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 993 } else { 994 log_info("Not sending HF indicator %u as it is disabled", hfp_hf_indicators[i]); 995 } 996 return; 997 } 998 } 999 } 1000 1001 if (done) return; 1002 // deal with disconnect 1003 switch (hfp_connection->state){ 1004 case HFP_W2_DISCONNECT_RFCOMM: 1005 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1006 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1007 break; 1008 1009 default: 1010 break; 1011 } 1012 } 1013 1014 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 1015 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 1016 1017 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 1018 1019 uint8_t i; 1020 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1021 hfp_connection->ag_indicators[i].status_changed = 0; 1022 hfp_emit_ag_indicator_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1023 } 1024 // restore volume settings 1025 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 1026 hfp_connection->send_speaker_gain = 1; 1027 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 1028 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 1029 hfp_connection->send_microphone_gain = 1; 1030 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 1031 // enable all indicators 1032 for (i=0; i < hfp_hf_indicators_nr; i++){ 1033 hfp_connection->generic_status_indicators[i].uuid = hfp_hf_indicators[i]; 1034 hfp_connection->generic_status_indicators[i].state = 1; 1035 } 1036 } 1037 1038 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 1039 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_hf_codecs_nr, hfp_hf_codecs)){ 1040 // Codec supported, confirm 1041 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1042 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1043 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 1044 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 1045 1046 hfp_connection->hf_send_codec_confirm = true; 1047 } else { 1048 // Codec not supported, send supported codecs 1049 hfp_connection->codec_confirmed = 0; 1050 hfp_connection->suggested_codec = 0; 1051 hfp_connection->negotiated_codec = 0; 1052 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1053 1054 hfp_connection->hf_send_supported_codecs = true; 1055 } 1056 } 1057 1058 static bool hfp_hf_switch_on_ok_pending(hfp_connection_t *hfp_connection, uint8_t status){ 1059 bool event_emited = true; 1060 1061 switch (hfp_connection->response_pending_for_command){ 1062 case HFP_CMD_TURN_OFF_EC_AND_NR: 1063 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 1064 break; 1065 default: 1066 event_emited = false; 1067 1068 switch (hfp_connection->state){ 1069 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 1070 if (has_codec_negotiation_feature(hfp_connection)){ 1071 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 1072 break; 1073 } 1074 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1075 break; 1076 1077 case HFP_W4_NOTIFY_ON_CODECS: 1078 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1079 break; 1080 1081 case HFP_W4_RETRIEVE_INDICATORS: 1082 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 1083 break; 1084 1085 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 1086 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 1087 break; 1088 1089 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 1090 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 1091 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 1092 break; 1093 } 1094 if (has_hf_indicators_feature(hfp_connection)){ 1095 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1096 break; 1097 } 1098 hfp_ag_slc_established(hfp_connection); 1099 break; 1100 1101 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 1102 if (has_hf_indicators_feature(hfp_connection)){ 1103 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1104 break; 1105 } 1106 hfp_ag_slc_established(hfp_connection); 1107 break; 1108 1109 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 1110 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 1111 break; 1112 1113 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 1114 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 1115 break; 1116 1117 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 1118 hfp_ag_slc_established(hfp_connection); 1119 break; 1120 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1121 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 1122 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 1123 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1124 break; 1125 } 1126 1127 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 1128 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 1129 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1130 break; 1131 } 1132 1133 switch (hfp_connection->hf_query_operator_state){ 1134 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 1135 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1136 break; 1137 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 1138 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 1139 hfp_emit_network_operator_event(hfp_connection); 1140 break; 1141 default: 1142 break; 1143 } 1144 1145 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1146 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1147 break; 1148 } 1149 1150 switch (hfp_connection->codecs_state){ 1151 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1152 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1153 break; 1154 case HFP_CODECS_HF_CONFIRMED_CODEC: 1155 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1156 break; 1157 default: 1158 break; 1159 } 1160 hfp_hf_voice_recognition_state_machine(hfp_connection); 1161 break; 1162 case HFP_AUDIO_CONNECTION_ESTABLISHED: 1163 hfp_hf_voice_recognition_state_machine(hfp_connection); 1164 break; 1165 default: 1166 break; 1167 } 1168 break; 1169 } 1170 1171 // done 1172 hfp_connection->response_pending_for_command = HFP_CMD_NONE; 1173 hfp_connection->ok_pending = 0; 1174 hfp_connection->command = HFP_CMD_NONE; 1175 return event_emited; 1176 } 1177 1178 static bool hfp_is_ringing(hfp_callsetup_status_t callsetup_status){ 1179 switch (callsetup_status){ 1180 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1181 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1182 return true; 1183 default: 1184 return false; 1185 } 1186 } 1187 1188 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1189 uint16_t i; 1190 1191 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1192 if (hfp_connection->ag_indicators[i].status_changed) { 1193 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1194 hfp_callsetup_status_t new_hf_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1195 bool ringing_old = hfp_is_ringing(hfp_hf_callsetup_status); 1196 bool ringing_new = hfp_is_ringing(new_hf_callsetup_status); 1197 if (ringing_old != ringing_new){ 1198 if (ringing_new){ 1199 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGING); 1200 } else { 1201 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGING); 1202 } 1203 } 1204 hfp_hf_callsetup_status = new_hf_callsetup_status; 1205 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1206 hfp_hf_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1207 // avoid set but not used warning 1208 (void) hfp_hf_callheld_status; 1209 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1210 hfp_call_status_t new_hf_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1211 if (hfp_hf_call_status != new_hf_call_status){ 1212 if (new_hf_call_status == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 1213 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1214 } else { 1215 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1216 } 1217 } 1218 hfp_hf_call_status = new_hf_call_status; 1219 } 1220 hfp_connection->ag_indicators[i].status_changed = 0; 1221 hfp_emit_ag_indicator_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1222 break; 1223 } 1224 } 1225 } 1226 1227 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1228 int value; 1229 int i; 1230 bool event_emited; 1231 1232 switch (hfp_connection->command){ 1233 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1234 hfp_connection->command = HFP_CMD_NONE; 1235 hfp_hf_emit_subscriber_information(hfp_connection, 0); 1236 break; 1237 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1238 hfp_connection->command = HFP_CMD_NONE; 1239 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1240 break; 1241 case HFP_CMD_LIST_CURRENT_CALLS: 1242 hfp_connection->command = HFP_CMD_NONE; 1243 hfp_hf_emit_enhanced_call_status(hfp_connection); 1244 break; 1245 case HFP_CMD_SET_SPEAKER_GAIN: 1246 hfp_connection->command = HFP_CMD_NONE; 1247 value = btstack_atoi((char*)hfp_connection->line_buffer); 1248 hfp_hf_speaker_gain = value; 1249 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1250 break; 1251 case HFP_CMD_SET_MICROPHONE_GAIN: 1252 hfp_connection->command = HFP_CMD_NONE; 1253 value = btstack_atoi((char*)hfp_connection->line_buffer); 1254 hfp_hf_microphone_gain = value; 1255 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1256 break; 1257 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1258 hfp_connection->command = HFP_CMD_NONE; 1259 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1260 break; 1261 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1262 hfp_connection->command = HFP_CMD_NONE; 1263 hfp_hf_emit_type_and_number(hfp_connection, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION); 1264 break; 1265 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1266 hfp_connection->command = HFP_CMD_NONE; 1267 hfp_hf_emit_type_and_number(hfp_connection, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION); 1268 break; 1269 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1270 hfp_connection->command = HFP_CMD_NONE; 1271 hfp_connection->ok_pending = 0; 1272 hfp_connection->extended_audio_gateway_error = 0; 1273 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1274 break; 1275 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 1276 break; 1277 case HFP_CMD_ERROR: 1278 switch (hfp_connection->state){ 1279 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1280 switch (hfp_connection->codecs_state){ 1281 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1282 hfp_reset_context_flags(hfp_connection); 1283 hfp_emit_sco_event(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 0, hfp_connection->remote_addr, hfp_connection->negotiated_codec); 1284 return; 1285 default: 1286 break; 1287 } 1288 break; 1289 default: 1290 break; 1291 } 1292 1293 // handle error response for voice activation (HF initiated) 1294 switch(hfp_connection->vra_state_requested){ 1295 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1296 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1297 break; 1298 default: 1299 if (hfp_connection->vra_state_requested == hfp_connection->vra_state){ 1300 break; 1301 } 1302 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1303 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1304 hfp_reset_context_flags(hfp_connection); 1305 return; 1306 } 1307 event_emited = hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1308 if (!event_emited){ 1309 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 1); 1310 } 1311 hfp_reset_context_flags(hfp_connection); 1312 break; 1313 1314 case HFP_CMD_OK: 1315 hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_SUCCESS); 1316 break; 1317 case HFP_CMD_RING: 1318 hfp_connection->command = HFP_CMD_NONE; 1319 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1320 break; 1321 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1322 hfp_connection->command = HFP_CMD_NONE; 1323 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1324 break; 1325 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1326 hfp_connection->command = HFP_CMD_NONE; 1327 // report status after SLC established 1328 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 1329 break; 1330 } 1331 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1332 hfp_emit_ag_indicator_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1333 } 1334 break; 1335 case HFP_CMD_AG_SUGGESTED_CODEC: 1336 hfp_connection->command = HFP_CMD_NONE; 1337 hfp_hf_handle_suggested_codec(hfp_connection); 1338 break; 1339 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1340 hfp_emit_event(hfp_connection, HFP_SUBEVENT_IN_BAND_RING_TONE, get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE)); 1341 default: 1342 break; 1343 } 1344 } 1345 1346 static int hfp_parser_is_end_of_line(uint8_t byte){ 1347 return (byte == '\n') || (byte == '\r'); 1348 } 1349 1350 static void hfp_hf_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 1351 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1352 if (size < 1) return; 1353 1354 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1355 #ifdef ENABLE_HFP_AT_MESSAGES 1356 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1357 #endif 1358 1359 // process messages byte-wise 1360 uint8_t pos; 1361 for (pos = 0; pos < size; pos++){ 1362 hfp_parse(hfp_connection, packet[pos], 1); 1363 // parse until end of line "\r" or "\n" 1364 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1365 hfp_hf_handle_rfcomm_command(hfp_connection); 1366 } 1367 } 1368 1369 static void hfp_hf_run(void){ 1370 btstack_linked_list_iterator_t it; 1371 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1372 while (btstack_linked_list_iterator_has_next(&it)){ 1373 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1374 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1375 hfp_hf_run_for_context(hfp_connection); 1376 } 1377 } 1378 1379 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1380 hfp_connection_t * hfp_connection; 1381 switch (packet_type){ 1382 case RFCOMM_DATA_PACKET: 1383 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1384 if (!hfp_connection) return; 1385 hfp_hf_handle_rfcomm_data(hfp_connection, packet, size); 1386 hfp_hf_run_for_context(hfp_connection); 1387 return; 1388 case HCI_EVENT_PACKET: 1389 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1390 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1391 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1392 return; 1393 } 1394 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1395 break; 1396 default: 1397 break; 1398 } 1399 hfp_hf_run(); 1400 } 1401 1402 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1403 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1404 hfp_hf_run(); 1405 } 1406 1407 static void hfp_hf_set_defaults(void){ 1408 hfp_hf_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1409 hfp_hf_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1410 hfp_hf_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1411 hfp_hf_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1412 hfp_hf_codecs_nr = 0; 1413 hfp_hf_speaker_gain = 9; 1414 hfp_hf_microphone_gain = 9; 1415 hfp_hf_indicators_nr = 0; 1416 } 1417 1418 uint8_t hfp_hf_init(uint16_t rfcomm_channel_nr){ 1419 uint8_t status = rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1420 if (status != ERROR_CODE_SUCCESS){ 1421 return status; 1422 } 1423 1424 hfp_init(); 1425 hfp_hf_set_defaults(); 1426 1427 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1428 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1429 1430 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1431 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1432 return ERROR_CODE_SUCCESS; 1433 } 1434 1435 void hfp_hf_deinit(void){ 1436 hfp_deinit(); 1437 hfp_hf_set_defaults(); 1438 1439 hfp_hf_callback = NULL; 1440 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1441 (void) memset(hfp_hf_phone_number, 0, sizeof(hfp_hf_phone_number)); 1442 } 1443 1444 void hfp_hf_init_codecs(int codecs_nr, const uint8_t * codecs){ 1445 btstack_assert(codecs_nr < HFP_MAX_NUM_CODECS); 1446 1447 hfp_hf_codecs_nr = codecs_nr; 1448 int i; 1449 for (i=0; i<codecs_nr; i++){ 1450 hfp_hf_codecs[i] = codecs[i]; 1451 } 1452 } 1453 1454 void hfp_hf_init_supported_features(uint32_t supported_features){ 1455 hfp_hf_supported_features = supported_features; 1456 } 1457 1458 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1459 btstack_assert(hfp_hf_indicators_nr < HFP_MAX_NUM_INDICATORS); 1460 1461 hfp_hf_indicators_nr = indicators_nr; 1462 int i; 1463 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 1464 hfp_hf_indicators[i] = indicators[i]; 1465 } 1466 } 1467 1468 uint8_t hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1469 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1470 } 1471 1472 uint8_t hfp_hf_release_service_level_connection(hci_con_handle_t acl_handle){ 1473 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1474 if (!hfp_connection){ 1475 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1476 } 1477 hfp_trigger_release_service_level_connection(hfp_connection); 1478 hfp_hf_run_for_context(hfp_connection); 1479 return ERROR_CODE_SUCCESS; 1480 } 1481 1482 static uint8_t hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1483 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1484 if (!hfp_connection) { 1485 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1486 } 1487 hfp_connection->enable_status_update_for_ag_indicators = enable; 1488 hfp_hf_run_for_context(hfp_connection); 1489 return ERROR_CODE_SUCCESS; 1490 } 1491 1492 uint8_t hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1493 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1494 } 1495 1496 uint8_t hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1497 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1498 } 1499 1500 // TODO: returned ERROR - wrong format 1501 uint8_t hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1502 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1503 if (!hfp_connection) { 1504 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1505 } 1506 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1507 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1508 hfp_hf_run_for_context(hfp_connection); 1509 return ERROR_CODE_SUCCESS; 1510 } 1511 1512 uint8_t hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1513 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1514 if (!hfp_connection) { 1515 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1516 } 1517 1518 switch (hfp_connection->hf_query_operator_state){ 1519 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1520 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1521 break; 1522 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1523 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1524 break; 1525 default: 1526 return ERROR_CODE_COMMAND_DISALLOWED; 1527 } 1528 hfp_hf_run_for_context(hfp_connection); 1529 return ERROR_CODE_SUCCESS; 1530 } 1531 1532 static uint8_t hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1533 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1534 if (!hfp_connection) { 1535 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1536 } 1537 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1538 hfp_hf_run_for_context(hfp_connection); 1539 return ERROR_CODE_SUCCESS; 1540 } 1541 1542 1543 uint8_t hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1544 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1545 } 1546 1547 uint8_t hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1548 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1549 } 1550 1551 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1552 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_hf_supported_features & (1 << HFP_HFSF_ESCO_S4)); 1553 } 1554 1555 uint8_t hfp_hf_establish_audio_connection(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_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1562 return ERROR_CODE_COMMAND_DISALLOWED; 1563 } 1564 1565 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 1566 return ERROR_CODE_COMMAND_DISALLOWED; 1567 } 1568 if (has_codec_negotiation_feature(hfp_connection)) { 1569 switch (hfp_connection->codecs_state) { 1570 case HFP_CODECS_W4_AG_COMMON_CODEC: 1571 break; 1572 case HFP_CODECS_EXCHANGED: 1573 hfp_connection->trigger_codec_exchange = 1; 1574 break; 1575 default: 1576 hfp_connection->codec_confirmed = 0; 1577 hfp_connection->suggested_codec = 0; 1578 hfp_connection->negotiated_codec = 0; 1579 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1580 hfp_connection->trigger_codec_exchange = 1; 1581 break; 1582 } 1583 } else { 1584 log_info("no codec negotiation feature, use CVSD"); 1585 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1586 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1587 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1588 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1589 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1590 hfp_connection->establish_audio_connection = 1; 1591 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1592 } 1593 1594 hfp_hf_run_for_context(hfp_connection); 1595 return ERROR_CODE_SUCCESS; 1596 } 1597 1598 uint8_t hfp_hf_release_audio_connection(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 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1602 } 1603 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 1604 return ERROR_CODE_COMMAND_DISALLOWED; 1605 } 1606 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 1607 if (status == ERROR_CODE_SUCCESS){ 1608 hfp_hf_run_for_context(hfp_connection); 1609 } 1610 return ERROR_CODE_SUCCESS; 1611 } 1612 1613 uint8_t hfp_hf_answer_incoming_call(hci_con_handle_t acl_handle){ 1614 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1615 if (!hfp_connection) { 1616 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1617 } 1618 1619 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1620 hfp_connection->hf_answer_incoming_call = 1; 1621 hfp_hf_run_for_context(hfp_connection); 1622 } else { 1623 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_hf_callsetup_status); 1624 return ERROR_CODE_COMMAND_DISALLOWED; 1625 } 1626 return ERROR_CODE_SUCCESS; 1627 } 1628 1629 uint8_t hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1630 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1631 if (!hfp_connection) { 1632 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1633 } 1634 hfp_connection->hf_send_chup = 1; 1635 hfp_hf_run_for_context(hfp_connection); 1636 return ERROR_CODE_SUCCESS; 1637 } 1638 1639 uint8_t hfp_hf_reject_incoming_call(hci_con_handle_t acl_handle){ 1640 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1641 if (!hfp_connection) { 1642 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1643 } 1644 1645 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1646 hfp_connection->hf_send_chup = 1; 1647 hfp_hf_run_for_context(hfp_connection); 1648 } 1649 return ERROR_CODE_SUCCESS; 1650 } 1651 1652 uint8_t hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1653 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1654 if (!hfp_connection) { 1655 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1656 } 1657 1658 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1659 hfp_connection->hf_send_chld_0 = 1; 1660 hfp_hf_run_for_context(hfp_connection); 1661 } 1662 return ERROR_CODE_SUCCESS; 1663 } 1664 1665 uint8_t hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1666 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1667 if (!hfp_connection) { 1668 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1669 } 1670 1671 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1672 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1673 hfp_connection->hf_send_chld_1 = 1; 1674 hfp_hf_run_for_context(hfp_connection); 1675 } 1676 return ERROR_CODE_SUCCESS; 1677 } 1678 1679 uint8_t hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1680 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1681 if (!hfp_connection) { 1682 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1683 } 1684 1685 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1686 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1687 hfp_connection->hf_send_chld_2 = 1; 1688 hfp_hf_run_for_context(hfp_connection); 1689 } 1690 return ERROR_CODE_SUCCESS; 1691 } 1692 1693 uint8_t hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 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 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1700 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1701 hfp_connection->hf_send_chld_3 = 1; 1702 hfp_hf_run_for_context(hfp_connection); 1703 } 1704 return ERROR_CODE_SUCCESS; 1705 } 1706 1707 uint8_t hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1708 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1709 if (!hfp_connection) { 1710 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1711 } 1712 1713 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1714 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1715 hfp_connection->hf_send_chld_4 = 1; 1716 hfp_hf_run_for_context(hfp_connection); 1717 } 1718 return ERROR_CODE_SUCCESS; 1719 } 1720 1721 uint8_t hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1722 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1723 if (!hfp_connection) { 1724 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1725 } 1726 1727 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1728 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1729 hfp_connection->hf_send_chld_x = 1; 1730 hfp_connection->hf_send_chld_x_index = 10 + index; 1731 hfp_hf_run_for_context(hfp_connection); 1732 } 1733 return ERROR_CODE_SUCCESS; 1734 } 1735 1736 uint8_t hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 1737 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1738 if (!hfp_connection) { 1739 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1740 } 1741 1742 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1743 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1744 hfp_connection->hf_send_chld_x = 1; 1745 hfp_connection->hf_send_chld_x_index = 20 + index; 1746 hfp_hf_run_for_context(hfp_connection); 1747 } 1748 return ERROR_CODE_SUCCESS; 1749 } 1750 1751 uint8_t hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 1752 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1753 if (!hfp_connection) { 1754 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1755 } 1756 1757 hfp_connection->hf_initiate_outgoing_call = 1; 1758 snprintf(hfp_hf_phone_number, sizeof(hfp_hf_phone_number), "%s", number); 1759 hfp_hf_run_for_context(hfp_connection); 1760 return ERROR_CODE_SUCCESS; 1761 } 1762 1763 uint8_t hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 1764 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1765 if (!hfp_connection) { 1766 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1767 } 1768 1769 hfp_connection->hf_initiate_memory_dialing = 1; 1770 hfp_connection->memory_id = memory_id; 1771 1772 hfp_hf_run_for_context(hfp_connection); 1773 return ERROR_CODE_SUCCESS; 1774 } 1775 1776 uint8_t hfp_hf_redial_last_number(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 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1780 } 1781 1782 hfp_connection->hf_initiate_redial_last_number = 1; 1783 hfp_hf_run_for_context(hfp_connection); 1784 return ERROR_CODE_SUCCESS; 1785 } 1786 1787 uint8_t hfp_hf_activate_call_waiting_notification(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 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1791 } 1792 1793 hfp_connection->hf_activate_call_waiting_notification = 1; 1794 hfp_hf_run_for_context(hfp_connection); 1795 return ERROR_CODE_SUCCESS; 1796 } 1797 1798 1799 uint8_t hfp_hf_deactivate_call_waiting_notification(hci_con_handle_t acl_handle){ 1800 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1801 if (!hfp_connection) { 1802 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1803 } 1804 1805 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1806 hfp_hf_run_for_context(hfp_connection); 1807 return ERROR_CODE_SUCCESS; 1808 } 1809 1810 1811 uint8_t hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1812 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1813 if (!hfp_connection) { 1814 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1815 } 1816 1817 hfp_connection->hf_activate_calling_line_notification = 1; 1818 hfp_hf_run_for_context(hfp_connection); 1819 return ERROR_CODE_SUCCESS; 1820 } 1821 1822 uint8_t hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1823 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1824 if (!hfp_connection) { 1825 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1826 } 1827 1828 hfp_connection->hf_deactivate_calling_line_notification = 1; 1829 hfp_hf_run_for_context(hfp_connection); 1830 return ERROR_CODE_SUCCESS; 1831 } 1832 1833 static bool hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection_t * hfp_connection){ 1834 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_EC_NR_FUNCTION); 1835 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_EC_NR_FUNCTION); 1836 return hf && ag; 1837 } 1838 1839 uint8_t hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1840 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1841 if (!hfp_connection) { 1842 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1843 } 1844 if (!hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection)){ 1845 return ERROR_CODE_COMMAND_DISALLOWED; 1846 } 1847 1848 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1849 hfp_hf_run_for_context(hfp_connection); 1850 return ERROR_CODE_SUCCESS; 1851 } 1852 1853 uint8_t hfp_hf_activate_voice_recognition(hci_con_handle_t acl_handle){ 1854 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1855 if (!hfp_connection) { 1856 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1857 } 1858 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1859 return ERROR_CODE_COMMAND_DISALLOWED; 1860 } 1861 1862 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1863 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1864 if (!enhanced_vra_supported && !legacy_vra_supported){ 1865 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1866 } 1867 1868 switch (hfp_connection->vra_state){ 1869 case HFP_VRA_VOICE_RECOGNITION_OFF: 1870 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1871 hfp_connection->command = HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION; 1872 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 1873 hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 1874 break; 1875 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1876 hfp_connection->activate_voice_recognition = true; 1877 break; 1878 default: 1879 return ERROR_CODE_COMMAND_DISALLOWED; 1880 } 1881 1882 hfp_hf_run_for_context(hfp_connection); 1883 return ERROR_CODE_SUCCESS; 1884 } 1885 1886 uint8_t hfp_hf_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 1887 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1888 if (!hfp_connection) { 1889 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1890 } 1891 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 1892 return ERROR_CODE_COMMAND_DISALLOWED; 1893 } 1894 1895 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1896 if (!enhanced_vra_supported){ 1897 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1898 } 1899 1900 switch (hfp_connection->vra_state){ 1901 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 1902 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1903 hfp_connection->command = HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION; 1904 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 1905 break; 1906 default: 1907 return ERROR_CODE_COMMAND_DISALLOWED; 1908 } 1909 1910 hfp_hf_run_for_context(hfp_connection); 1911 return ERROR_CODE_SUCCESS; 1912 } 1913 1914 1915 uint8_t hfp_hf_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 1916 // return deactivate_voice_recognition(acl_handle, false); 1917 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1918 if (!hfp_connection) { 1919 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1920 } 1921 1922 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 1923 hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1924 return ERROR_CODE_COMMAND_DISALLOWED; 1925 } 1926 1927 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1928 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1929 if (!enhanced_vra_supported && !legacy_vra_supported){ 1930 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1931 } 1932 1933 switch (hfp_connection->vra_state){ 1934 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 1935 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 1936 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1937 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1938 hfp_connection->command = HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION; 1939 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 1940 break; 1941 1942 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 1943 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1944 hfp_connection->deactivate_voice_recognition = true; 1945 break; 1946 1947 case HFP_VRA_VOICE_RECOGNITION_OFF: 1948 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1949 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1950 default: 1951 return ERROR_CODE_COMMAND_DISALLOWED; 1952 } 1953 1954 hfp_hf_run_for_context(hfp_connection); 1955 return ERROR_CODE_SUCCESS; 1956 } 1957 1958 uint8_t hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 1959 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1960 if (!hfp_connection) { 1961 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1962 } 1963 1964 if (hfp_connection->microphone_gain == gain) { 1965 return ERROR_CODE_SUCCESS; 1966 } 1967 1968 if ((gain < 0) || (gain > 15)){ 1969 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 1970 return ERROR_CODE_COMMAND_DISALLOWED; 1971 } 1972 1973 hfp_connection->microphone_gain = gain; 1974 hfp_connection->send_microphone_gain = 1; 1975 hfp_hf_run_for_context(hfp_connection); 1976 return ERROR_CODE_SUCCESS; 1977 } 1978 1979 uint8_t hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 1980 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1981 if (!hfp_connection) { 1982 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1983 } 1984 1985 if (hfp_connection->speaker_gain == gain){ 1986 return ERROR_CODE_SUCCESS; 1987 } 1988 1989 if ((gain < 0) || (gain > 15)){ 1990 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 1991 return ERROR_CODE_COMMAND_DISALLOWED; 1992 } 1993 1994 hfp_connection->speaker_gain = gain; 1995 hfp_connection->send_speaker_gain = 1; 1996 hfp_hf_run_for_context(hfp_connection); 1997 return ERROR_CODE_SUCCESS; 1998 } 1999 2000 uint8_t hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 2001 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2002 if (!hfp_connection) { 2003 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2004 } 2005 hfp_connection->hf_send_dtmf_code = code; 2006 hfp_hf_run_for_context(hfp_connection); 2007 return ERROR_CODE_SUCCESS; 2008 } 2009 2010 uint8_t hfp_hf_request_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2011 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2012 if (!hfp_connection) { 2013 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2014 } 2015 hfp_connection->hf_send_binp = 1; 2016 hfp_hf_run_for_context(hfp_connection); 2017 return ERROR_CODE_SUCCESS; 2018 } 2019 2020 uint8_t hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 2021 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2022 if (!hfp_connection) { 2023 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2024 } 2025 hfp_connection->hf_send_clcc = 1; 2026 hfp_hf_run_for_context(hfp_connection); 2027 return ERROR_CODE_SUCCESS; 2028 } 2029 2030 2031 uint8_t hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 2032 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2033 if (!hfp_connection) { 2034 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2035 } 2036 hfp_connection->hf_send_rrh = 1; 2037 hfp_connection->hf_send_rrh_command = '?'; 2038 hfp_hf_run_for_context(hfp_connection); 2039 return ERROR_CODE_SUCCESS; 2040 } 2041 2042 uint8_t hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 2043 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2044 if (!hfp_connection) { 2045 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2046 } 2047 hfp_connection->hf_send_rrh = 1; 2048 hfp_connection->hf_send_rrh_command = '0'; 2049 hfp_hf_run_for_context(hfp_connection); 2050 return ERROR_CODE_SUCCESS; 2051 } 2052 2053 uint8_t hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 2054 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2055 if (!hfp_connection) { 2056 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2057 } 2058 hfp_connection->hf_send_rrh = 1; 2059 hfp_connection->hf_send_rrh_command = '1'; 2060 hfp_hf_run_for_context(hfp_connection); 2061 return ERROR_CODE_SUCCESS; 2062 } 2063 2064 uint8_t hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 2065 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2066 if (!hfp_connection) { 2067 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2068 } 2069 hfp_connection->hf_send_rrh = 1; 2070 hfp_connection->hf_send_rrh_command = '2'; 2071 hfp_hf_run_for_context(hfp_connection); 2072 return ERROR_CODE_SUCCESS; 2073 } 2074 2075 uint8_t hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 2076 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2077 if (!hfp_connection) { 2078 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2079 } 2080 hfp_connection->hf_send_cnum = 1; 2081 hfp_hf_run_for_context(hfp_connection); 2082 return ERROR_CODE_SUCCESS; 2083 } 2084 2085 uint8_t hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 2086 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2087 if (!hfp_connection) { 2088 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2089 } 2090 // find index for assigned number 2091 int i; 2092 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 2093 if (hfp_hf_indicators[i] == assigned_number){ 2094 // set value 2095 hfp_hf_indicators_value[i] = value; 2096 // mark for update 2097 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 2098 hfp_connection->generic_status_update_bitmap |= (1<<i); 2099 // send update 2100 hfp_hf_run_for_context(hfp_connection); 2101 } 2102 return ERROR_CODE_SUCCESS; 2103 } 2104 } 2105 return ERROR_CODE_SUCCESS; 2106 } 2107 2108 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 2109 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2110 if (!hfp_connection) { 2111 return 0; 2112 } 2113 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 2114 } 2115 2116 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){ 2117 if (!name){ 2118 name = hfp_hf_default_service_name; 2119 } 2120 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 2121 2122 // Construct SupportedFeatures for SDP bitmap: 2123 // 2124 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2125 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2126 // 2127 // Wide band speech (bit 5) requires Codec negotiation 2128 // 2129 uint16_t sdp_features = supported_features & 0x1f; 2130 if ( (wide_band_speech != 0) && (supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION))){ 2131 sdp_features |= 1 << 5; 2132 } 2133 2134 if (supported_features & (1 << HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2135 sdp_features |= 1 << 6; 2136 } 2137 2138 if (supported_features & (1 << HFP_HFSF_VOICE_RECOGNITION_TEXT)){ 2139 sdp_features |= 1 << 7; 2140 } 2141 2142 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2143 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2144 } 2145 2146 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 2147 btstack_assert(callback != NULL); 2148 2149 hfp_hf_callback = callback; 2150 hfp_set_hf_callback(callback); 2151 } 2152