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 BLUEKITCHEN 24 * GMBH 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 static void hfp_emit_ag_indicator_mapping_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 193 if (hfp_hf_callback == NULL) return; 194 uint8_t event[8+HFP_MAX_INDICATOR_DESC_SIZE+1]; 195 int pos = 0; 196 event[pos++] = HCI_EVENT_HFP_META; 197 event[pos++] = sizeof(event) - 2; 198 event[pos++] = HFP_SUBEVENT_AG_INDICATOR_MAPPING; 199 little_endian_store_16(event, pos, hfp_connection->acl_handle); 200 pos += 2; 201 event[pos++] = indicator->index; 202 event[pos++] = indicator->min_range; 203 event[pos++] = indicator->max_range; 204 strncpy((char*)&event[pos], indicator->name, HFP_MAX_INDICATOR_DESC_SIZE); 205 pos += HFP_MAX_INDICATOR_DESC_SIZE; 206 event[pos] = 0; 207 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 208 } 209 210 static void hfp_emit_ag_indicator_status_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 211 if (hfp_hf_callback == NULL) return; 212 uint8_t event[12+HFP_MAX_INDICATOR_DESC_SIZE+1]; 213 int pos = 0; 214 event[pos++] = HCI_EVENT_HFP_META; 215 event[pos++] = sizeof(event) - 2; 216 event[pos++] = HFP_SUBEVENT_AG_INDICATOR_STATUS_CHANGED; 217 little_endian_store_16(event, pos, hfp_connection->acl_handle); 218 pos += 2; 219 event[pos++] = indicator->index; 220 event[pos++] = indicator->status; 221 event[pos++] = indicator->min_range; 222 event[pos++] = indicator->max_range; 223 event[pos++] = indicator->mandatory; 224 event[pos++] = indicator->enabled; 225 event[pos++] = indicator->status_changed; 226 strncpy((char*)&event[pos], indicator->name, HFP_MAX_INDICATOR_DESC_SIZE); 227 pos += HFP_MAX_INDICATOR_DESC_SIZE; 228 event[pos] = 0; 229 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 230 } 231 232 static void hfp_emit_network_operator_event(const hfp_connection_t * hfp_connection){ 233 if (hfp_hf_callback == NULL) return; 234 uint8_t event[7+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE+1]; 235 event[0] = HCI_EVENT_HFP_META; 236 event[1] = sizeof(event) - 2; 237 event[2] = HFP_SUBEVENT_NETWORK_OPERATOR_CHANGED; 238 little_endian_store_16(event, 3, hfp_connection->acl_handle); 239 event[5] = hfp_connection->network_operator.mode; 240 event[6] = hfp_connection->network_operator.format; 241 strncpy((char*)&event[7], hfp_connection->network_operator.name, HFP_MAX_NETWORK_OPERATOR_NAME_SIZE); 242 event[7+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE] = 0; 243 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 244 } 245 246 247 static void hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection_t * hfp_connection){ 248 btstack_assert(hfp_connection != NULL); 249 uint8_t event[HFP_MAX_VR_TEXT_SIZE + 11]; 250 int pos = 0; 251 event[pos++] = HCI_EVENT_HFP_META; 252 event[pos++] = sizeof(event) - 2; 253 event[pos++] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE; 254 little_endian_store_16(event, pos, hfp_connection->acl_handle); 255 pos += 2; 256 little_endian_store_16(event, pos, hfp_connection->ag_msg.text_id); 257 pos += 2; 258 event[pos++] = hfp_connection->ag_msg.text_type; 259 event[pos++] = hfp_connection->ag_msg.text_operation; 260 261 // length, zero ending is already in message 262 uint8_t * value = &hfp_connection->line_buffer[0]; 263 uint16_t value_length = hfp_connection->ag_vra_msg_length; 264 265 little_endian_store_16(event, pos, value_length); 266 pos += 2; 267 memcpy(&event[pos], value, value_length); 268 pos += value_length; 269 270 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 271 } 272 273 /* send commands */ 274 275 static inline int hfp_hf_send_cmd(uint16_t cid, const char * cmd){ 276 char buffer[20]; 277 snprintf(buffer, sizeof(buffer), "AT%s\r", cmd); 278 return send_str_over_rfcomm(cid, buffer); 279 } 280 281 static inline int hfp_hf_send_cmd_with_mark(uint16_t cid, const char * cmd, const char * mark){ 282 char buffer[20]; 283 snprintf(buffer, sizeof(buffer), "AT%s%s\r", cmd, mark); 284 return send_str_over_rfcomm(cid, buffer); 285 } 286 287 static inline int hfp_hf_send_cmd_with_int(uint16_t cid, const char * cmd, uint16_t value){ 288 char buffer[40]; 289 snprintf(buffer, sizeof(buffer), "AT%s=%d\r", cmd, value); 290 return send_str_over_rfcomm(cid, buffer); 291 } 292 293 static int hfp_hf_cmd_notify_on_codecs(uint16_t cid){ 294 char buffer[30]; 295 const int size = sizeof(buffer); 296 int offset = snprintf(buffer, size, "AT%s=", HFP_AVAILABLE_CODECS); 297 offset += join(buffer+offset, size-offset, hfp_hf_codecs, hfp_hf_codecs_nr); 298 offset += snprintf(buffer+offset, size-offset, "\r"); 299 return send_str_over_rfcomm(cid, buffer); 300 } 301 302 static int hfp_hf_cmd_activate_status_update_for_ag_indicator(uint16_t cid, uint32_t indicators_status, int indicators_nr){ 303 char buffer[50]; 304 const int size = sizeof(buffer); 305 int offset = snprintf(buffer, size, "AT%s=", HFP_UPDATE_ENABLE_STATUS_FOR_INDIVIDUAL_AG_INDICATORS); 306 offset += join_bitmap(buffer+offset, size-offset, indicators_status, indicators_nr); 307 offset += snprintf(buffer+offset, size-offset, "\r"); 308 return send_str_over_rfcomm(cid, buffer); 309 } 310 311 static int hfp_hf_cmd_list_supported_generic_status_indicators(uint16_t cid){ 312 char buffer[30]; 313 const int size = sizeof(buffer); 314 int offset = snprintf(buffer, size, "AT%s=", HFP_GENERIC_STATUS_INDICATOR); 315 offset += join(buffer+offset, size-offset, hfp_hf_indicators, hfp_hf_indicators_nr); 316 offset += snprintf(buffer+offset, size-offset, "\r"); 317 return send_str_over_rfcomm(cid, buffer); 318 } 319 320 static int hfp_hf_cmd_activate_status_update_for_all_ag_indicators(uint16_t cid, uint8_t activate){ 321 char buffer[20]; 322 snprintf(buffer, sizeof(buffer), "AT%s=3,0,0,%d\r", HFP_ENABLE_STATUS_UPDATE_FOR_AG_INDICATORS, activate); 323 return send_str_over_rfcomm(cid, buffer); 324 } 325 326 static int hfp_hf_initiate_outgoing_call_cmd(uint16_t cid){ 327 char buffer[40]; 328 snprintf(buffer, sizeof(buffer), "%s%s;\r", HFP_CALL_PHONE_NUMBER, hfp_hf_phone_number); 329 return send_str_over_rfcomm(cid, buffer); 330 } 331 332 static int hfp_hf_send_memory_dial_cmd(uint16_t cid, int memory_id){ 333 char buffer[40]; 334 snprintf(buffer, sizeof(buffer), "%s>%d;\r", HFP_CALL_PHONE_NUMBER, memory_id); 335 return send_str_over_rfcomm(cid, buffer); 336 } 337 338 static int hfp_hf_send_chld(uint16_t cid, unsigned int number){ 339 char buffer[40]; 340 snprintf(buffer, sizeof(buffer), "AT%s=%u\r", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, number); 341 return send_str_over_rfcomm(cid, buffer); 342 } 343 344 static int hfp_hf_send_dtmf(uint16_t cid, char code){ 345 char buffer[20]; 346 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", HFP_TRANSMIT_DTMF_CODES, code); 347 return send_str_over_rfcomm(cid, buffer); 348 } 349 350 static int hfp_hf_cmd_ata(uint16_t cid){ 351 return send_str_over_rfcomm(cid, (char *) "ATA\r"); 352 } 353 354 static int hfp_hf_cmd_exchange_supported_features(uint16_t cid){ 355 return hfp_hf_send_cmd_with_int(cid, HFP_SUPPORTED_FEATURES, hfp_hf_supported_features); 356 } 357 358 static int hfp_hf_cmd_retrieve_indicators(uint16_t cid){ 359 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "=?"); 360 } 361 362 static int hfp_hf_cmd_retrieve_indicators_status(uint16_t cid){ 363 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "?"); 364 } 365 366 static int hfp_hf_cmd_retrieve_can_hold_call(uint16_t cid){ 367 return hfp_hf_send_cmd_with_mark(cid, HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, "=?"); 368 } 369 370 static int hfp_hf_cmd_retrieve_supported_generic_status_indicators(uint16_t cid){ 371 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "=?"); 372 } 373 374 static int hfp_hf_cmd_list_initital_supported_generic_status_indicators(uint16_t cid){ 375 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "?"); 376 } 377 378 static int hfp_hf_cmd_query_operator_name_format(uint16_t cid){ 379 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "=3,0"); 380 } 381 382 static int hfp_hf_cmd_query_operator_name(uint16_t cid){ 383 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "?"); 384 } 385 386 static int hfp_hf_cmd_trigger_codec_connection_setup(uint16_t cid){ 387 return hfp_hf_send_cmd(cid, HFP_TRIGGER_CODEC_CONNECTION_SETUP); 388 } 389 390 static int hfp_hf_set_microphone_gain_cmd(uint16_t cid, int gain){ 391 return hfp_hf_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 392 } 393 394 static int hfp_hf_set_speaker_gain_cmd(uint16_t cid, int gain){ 395 return hfp_hf_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 396 } 397 398 static int hfp_hf_set_calling_line_notification_cmd(uint16_t cid, uint8_t activate){ 399 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CLIP, activate); 400 } 401 402 static int hfp_hf_set_voice_recognition_notification_cmd(uint16_t cid, uint8_t activate){ 403 return hfp_hf_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate); 404 } 405 406 static int hfp_hf_set_call_waiting_notification_cmd(uint16_t cid, uint8_t activate){ 407 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CALL_WAITING_NOTIFICATION, activate); 408 } 409 410 static int hfp_hf_cmd_confirm_codec(uint16_t cid, uint8_t codec){ 411 return hfp_hf_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 412 } 413 414 static int hfp_hf_cmd_enable_extended_audio_gateway_error_report(uint16_t cid, uint8_t enable){ 415 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR, enable); 416 } 417 418 static int hfp_hf_send_redial_last_number_cmd(uint16_t cid){ 419 return hfp_hf_send_cmd(cid, HFP_REDIAL_LAST_NUMBER); 420 } 421 422 static int hfp_hf_send_chup(uint16_t cid){ 423 return hfp_hf_send_cmd(cid, HFP_HANG_UP_CALL); 424 } 425 426 static int hfp_hf_send_binp(uint16_t cid){ 427 return hfp_hf_send_cmd_with_mark(cid, HFP_PHONE_NUMBER_FOR_VOICE_TAG, "=1"); 428 } 429 430 static int hfp_hf_send_clcc(uint16_t cid){ 431 return hfp_hf_send_cmd(cid, HFP_LIST_CURRENT_CALLS); 432 } 433 434 /* state machines */ 435 436 static int hfp_hf_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 437 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 438 if (hfp_connection->ok_pending) return 0; 439 int done = 1; 440 log_info("hfp_hf_run_for_context_service_level_connection state %d\n", hfp_connection->state); 441 switch (hfp_connection->state){ 442 case HFP_EXCHANGE_SUPPORTED_FEATURES: 443 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_hf_codecs, &hfp_hf_codecs_nr); 444 hfp_connection->state = HFP_W4_EXCHANGE_SUPPORTED_FEATURES; 445 hfp_hf_cmd_exchange_supported_features(hfp_connection->rfcomm_cid); 446 break; 447 case HFP_NOTIFY_ON_CODECS: 448 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 449 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 450 break; 451 case HFP_RETRIEVE_INDICATORS: 452 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 453 hfp_hf_cmd_retrieve_indicators(hfp_connection->rfcomm_cid); 454 break; 455 case HFP_RETRIEVE_INDICATORS_STATUS: 456 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 457 hfp_hf_cmd_retrieve_indicators_status(hfp_connection->rfcomm_cid); 458 break; 459 case HFP_ENABLE_INDICATORS_STATUS_UPDATE: 460 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 461 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, 1); 462 break; 463 case HFP_RETRIEVE_CAN_HOLD_CALL: 464 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 465 hfp_hf_cmd_retrieve_can_hold_call(hfp_connection->rfcomm_cid); 466 break; 467 case HFP_LIST_GENERIC_STATUS_INDICATORS: 468 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 469 hfp_hf_cmd_list_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 470 break; 471 case HFP_RETRIEVE_GENERIC_STATUS_INDICATORS: 472 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 473 hfp_hf_cmd_retrieve_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 474 break; 475 case HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 476 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 477 hfp_hf_cmd_list_initital_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 478 break; 479 default: 480 done = 0; 481 break; 482 } 483 return done; 484 } 485 486 487 static int hfp_hf_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 488 if (hfp_connection->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 489 if (hfp_connection->ok_pending){ 490 return 0; 491 } 492 int done = 0; 493 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 494 hfp_connection->ok_pending = 1; 495 done = 1; 496 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, hfp_connection->enable_status_update_for_ag_indicators); 497 return done; 498 }; 499 if (hfp_connection->change_status_update_for_individual_ag_indicators){ 500 hfp_connection->ok_pending = 1; 501 done = 1; 502 hfp_hf_cmd_activate_status_update_for_ag_indicator(hfp_connection->rfcomm_cid, 503 hfp_connection->ag_indicators_status_update_bitmap, 504 hfp_connection->ag_indicators_nr); 505 return done; 506 } 507 508 switch (hfp_connection->hf_query_operator_state){ 509 case HFP_HF_QUERY_OPERATOR_SET_FORMAT: 510 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK; 511 hfp_connection->ok_pending = 1; 512 hfp_hf_cmd_query_operator_name_format(hfp_connection->rfcomm_cid); 513 return 1; 514 case HFP_HF_QUERY_OPERATOR_SEND_QUERY: 515 hfp_connection->hf_query_operator_state = HPF_HF_QUERY_OPERATOR_W4_RESULT; 516 hfp_connection->ok_pending = 1; 517 hfp_hf_cmd_query_operator_name(hfp_connection->rfcomm_cid); 518 return 1; 519 default: 520 break; 521 } 522 523 if (hfp_connection->enable_extended_audio_gateway_error_report){ 524 hfp_connection->ok_pending = 1; 525 done = 1; 526 hfp_hf_cmd_enable_extended_audio_gateway_error_report(hfp_connection->rfcomm_cid, hfp_connection->enable_extended_audio_gateway_error_report); 527 return done; 528 } 529 530 return done; 531 } 532 533 static int hfp_hf_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 534 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 535 return 0; 536 } 537 int done = 0; 538 539 if (hfp_connection->ok_pending == 1){ 540 return 0; 541 } 542 // voice recognition activated from AG 543 if (hfp_connection->command == HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION){ 544 switch(hfp_connection->vra_state_requested){ 545 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 546 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 547 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 548 // ignore AG command, continue to wait for OK 549 return 0; 550 551 default: 552 if (hfp_connection->ag_vra_msg_length > 0){ 553 hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection); 554 hfp_connection->ag_vra_msg_length = 0; 555 break; 556 } 557 switch(hfp_connection->ag_vra_state){ 558 case HFP_VOICE_RECOGNITION_STATE_AG_READY: 559 switch (hfp_connection->ag_vra_status){ 560 case 0: 561 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 562 break; 563 case 1: 564 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 565 break; 566 case 2: 567 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 568 break; 569 default: 570 break; 571 } 572 break; 573 default: 574 // state messages from AG 575 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 576 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 577 break; 578 } 579 break; 580 } 581 hfp_connection->command = HFP_CMD_NONE; 582 } 583 584 585 switch (hfp_connection->vra_state_requested){ 586 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 587 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 0); 588 if (done != 0){ 589 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 590 hfp_connection->ok_pending = 1; 591 } 592 return 1; 593 594 595 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 596 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 1); 597 if (done != 0){ 598 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 599 hfp_connection->ok_pending = 1; 600 return 1; 601 } 602 break; 603 604 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 605 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 2); 606 if (done != 0){ 607 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 608 hfp_connection->ok_pending = 1; 609 return 1; 610 } 611 break; 612 613 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 614 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 615 hfp_connection->vra_state_requested = hfp_connection->vra_state; 616 hfp_connection->activate_voice_recognition = false; 617 if (hfp_connection->activate_voice_recognition){ 618 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 619 hfp_hf_activate_voice_recognition(hfp_connection->acl_handle); 620 } else { 621 hfp_emit_voice_recognition_disabled(hfp_connection, ERROR_CODE_SUCCESS); 622 } 623 break; 624 625 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 626 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 627 hfp_connection->vra_state_requested = hfp_connection->vra_state; 628 hfp_connection->activate_voice_recognition = false; 629 if (hfp_connection->deactivate_voice_recognition){ 630 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 631 } else { 632 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 633 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 634 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 635 } else { 636 // postpone VRA event to simplify application logic 637 hfp_connection->emit_vra_enabled_after_audio_established = true; 638 } 639 } 640 break; 641 642 643 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 644 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 645 hfp_connection->vra_state_requested = hfp_connection->vra_state; 646 hfp_connection->activate_voice_recognition = false; 647 if (hfp_connection->deactivate_voice_recognition){ 648 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 649 } else { 650 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 651 } 652 break; 653 654 default: 655 break; 656 } 657 return done; 658 } 659 660 661 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 662 if (hfp_connection->ok_pending) return 0; 663 664 if (hfp_connection->trigger_codec_exchange){ 665 hfp_connection->trigger_codec_exchange = 0; 666 667 hfp_connection->ok_pending = 1; 668 hfp_hf_cmd_trigger_codec_connection_setup(hfp_connection->rfcomm_cid); 669 return 1; 670 } 671 672 if (hfp_connection->hf_send_codec_confirm){ 673 hfp_connection->hf_send_codec_confirm = false; 674 675 hfp_connection->ok_pending = 1; 676 hfp_hf_cmd_confirm_codec(hfp_connection->rfcomm_cid, hfp_connection->codec_confirmed); 677 return 1; 678 } 679 680 if (hfp_connection->hf_send_supported_codecs){ 681 hfp_connection->hf_send_supported_codecs = false; 682 683 hfp_connection->ok_pending = 1; 684 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 685 return 1; 686 } 687 688 return 0; 689 } 690 691 static int hfp_hf_run_for_audio_connection(hfp_connection_t * hfp_connection){ 692 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 693 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 694 695 if (hfp_connection->release_audio_connection){ 696 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 697 hfp_connection->release_audio_connection = 0; 698 gap_disconnect(hfp_connection->sco_handle); 699 return 1; 700 } 701 702 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 703 704 // run codecs exchange 705 int done = codecs_exchange_state_machine(hfp_connection); 706 if (done) return 1; 707 708 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 709 if (hfp_connection->establish_audio_connection){ 710 hfp_connection->state = HFP_W4_SCO_CONNECTED; 711 hfp_connection->establish_audio_connection = 0; 712 hfp_setup_synchronous_connection(hfp_connection); 713 return 1; 714 } 715 return 0; 716 } 717 718 719 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 720 721 if (hfp_connection->ok_pending) return 0; 722 723 if (hfp_connection->hf_answer_incoming_call){ 724 hfp_hf_cmd_ata(hfp_connection->rfcomm_cid); 725 hfp_connection->hf_answer_incoming_call = 0; 726 return 1; 727 } 728 return 0; 729 } 730 731 static void hfp_hf_run_for_context(hfp_connection_t * hfp_connection){ 732 733 btstack_assert(hfp_connection != NULL); 734 btstack_assert(hfp_connection->local_role == HFP_ROLE_HF); 735 736 // during SDP query, RFCOMM CID is not set 737 if (hfp_connection->rfcomm_cid == 0) return; 738 739 // emit postponed VRA event 740 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->emit_vra_enabled_after_audio_established){ 741 hfp_connection->emit_vra_enabled_after_audio_established = false; 742 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 743 } 744 745 // assert command could be sent 746 if (hci_can_send_command_packet_now() == 0) return; 747 748 #ifdef ENABLE_CC256X_ASSISTED_HFP 749 // WBS Disassociate 750 if (hfp_connection->cc256x_send_wbs_disassociate){ 751 hfp_connection->cc256x_send_wbs_disassociate = false; 752 hci_send_cmd(&hci_ti_wbs_disassociate); 753 return; 754 } 755 // Write Codec Config 756 if (hfp_connection->cc256x_send_write_codec_config){ 757 hfp_connection->cc256x_send_write_codec_config = false; 758 hfp_cc256x_write_codec_config(hfp_connection); 759 return; 760 } 761 // WBS Associate 762 if (hfp_connection->cc256x_send_wbs_associate){ 763 hfp_connection->cc256x_send_wbs_associate = false; 764 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 765 return; 766 } 767 #endif 768 #ifdef ENABLE_BCM_PCM_WBS 769 // Enable WBS 770 if (hfp_connection->bcm_send_enable_wbs){ 771 hfp_connection->bcm_send_enable_wbs = false; 772 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 773 return; 774 } 775 // Write I2S/PCM params 776 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 777 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 778 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 779 return; 780 } 781 // Disable WBS 782 if (hfp_connection->bcm_send_disable_wbs){ 783 hfp_connection->bcm_send_disable_wbs = false; 784 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 785 return; 786 } 787 #endif 788 #ifdef ENABLE_RTK_PCM_WBS 789 if (hfp_connection->rtk_send_sco_config){ 790 hfp_connection->rtk_send_sco_config = false; 791 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){ 792 log_info("RTK SCO: 16k + mSBC"); 793 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x00, 0x00, 0x41); 794 } else { 795 log_info("RTK SCO: 16k + CVSD"); 796 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x0c, 0x00, 0x01); 797 } 798 return; 799 } 800 #endif 801 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 802 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 803 hfp_finalize_connection_context(hfp_connection); 804 return; 805 } 806 #endif 807 808 if (hfp_connection->accept_sco){ 809 bool incoming_eSCO = hfp_connection->accept_sco == 2; 810 hfp_connection->accept_sco = 0; 811 // notify about codec selection if not done already 812 if (hfp_connection->negotiated_codec == 0){ 813 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 814 } 815 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 816 return; 817 } 818 819 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 820 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 821 return; 822 } 823 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection); 824 if (!done){ 825 done = hfp_hf_run_for_context_service_level_connection_queries(hfp_connection); 826 } 827 if (!done){ 828 done = hfp_hf_run_for_audio_connection(hfp_connection); 829 } 830 if (!done){ 831 done = hfp_hf_voice_recognition_state_machine(hfp_connection); 832 } 833 if (!done){ 834 done = call_setup_state_machine(hfp_connection); 835 } 836 837 // don't send a new command while ok still pending or SLC is not established 838 if (hfp_connection->ok_pending || (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED)){ 839 return; 840 } 841 842 if (hfp_connection->send_microphone_gain){ 843 hfp_connection->send_microphone_gain = 0; 844 hfp_connection->ok_pending = 1; 845 hfp_hf_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 846 return; 847 } 848 849 if (hfp_connection->send_speaker_gain){ 850 hfp_connection->send_speaker_gain = 0; 851 hfp_connection->ok_pending = 1; 852 hfp_hf_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 853 return; 854 } 855 856 if (hfp_connection->hf_deactivate_calling_line_notification){ 857 hfp_connection->hf_deactivate_calling_line_notification = 0; 858 hfp_connection->ok_pending = 1; 859 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 0); 860 return; 861 } 862 863 if (hfp_connection->hf_activate_calling_line_notification){ 864 hfp_connection->hf_activate_calling_line_notification = 0; 865 hfp_connection->ok_pending = 1; 866 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 1); 867 return; 868 } 869 870 if (hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction){ 871 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 0; 872 hfp_connection->response_pending_for_command = HFP_CMD_TURN_OFF_EC_AND_NR; 873 hfp_connection->ok_pending = 1; 874 hfp_hf_send_cmd_with_int(hfp_connection->rfcomm_cid, HFP_TURN_OFF_EC_AND_NR, 0); 875 return; 876 } 877 878 if (hfp_connection->hf_deactivate_call_waiting_notification){ 879 hfp_connection->hf_deactivate_call_waiting_notification = 0; 880 hfp_connection->ok_pending = 1; 881 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 0); 882 return; 883 } 884 885 if (hfp_connection->hf_activate_call_waiting_notification){ 886 hfp_connection->hf_activate_call_waiting_notification = 0; 887 hfp_connection->ok_pending = 1; 888 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 1); 889 return; 890 } 891 892 if (hfp_connection->hf_initiate_outgoing_call){ 893 hfp_connection->hf_initiate_outgoing_call = 0; 894 hfp_connection->ok_pending = 1; 895 hfp_hf_initiate_outgoing_call_cmd(hfp_connection->rfcomm_cid); 896 return; 897 } 898 899 if (hfp_connection->hf_initiate_memory_dialing){ 900 hfp_connection->hf_initiate_memory_dialing = 0; 901 hfp_connection->ok_pending = 1; 902 hfp_hf_send_memory_dial_cmd(hfp_connection->rfcomm_cid, hfp_connection->memory_id); 903 return; 904 } 905 906 if (hfp_connection->hf_initiate_redial_last_number){ 907 hfp_connection->hf_initiate_redial_last_number = 0; 908 hfp_connection->ok_pending = 1; 909 hfp_hf_send_redial_last_number_cmd(hfp_connection->rfcomm_cid); 910 return; 911 } 912 913 if (hfp_connection->hf_send_chup){ 914 hfp_connection->hf_send_chup = 0; 915 hfp_connection->ok_pending = 1; 916 hfp_hf_send_chup(hfp_connection->rfcomm_cid); 917 return; 918 } 919 920 if (hfp_connection->hf_send_chld_0){ 921 hfp_connection->hf_send_chld_0 = 0; 922 hfp_connection->ok_pending = 1; 923 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 0); 924 return; 925 } 926 927 if (hfp_connection->hf_send_chld_1){ 928 hfp_connection->hf_send_chld_1 = 0; 929 hfp_connection->ok_pending = 1; 930 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 1); 931 return; 932 } 933 934 if (hfp_connection->hf_send_chld_2){ 935 hfp_connection->hf_send_chld_2 = 0; 936 hfp_connection->ok_pending = 1; 937 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 2); 938 return; 939 } 940 941 if (hfp_connection->hf_send_chld_3){ 942 hfp_connection->hf_send_chld_3 = 0; 943 hfp_connection->ok_pending = 1; 944 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 3); 945 return; 946 } 947 948 if (hfp_connection->hf_send_chld_4){ 949 hfp_connection->hf_send_chld_4 = 0; 950 hfp_connection->ok_pending = 1; 951 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 4); 952 return; 953 } 954 955 if (hfp_connection->hf_send_chld_x){ 956 hfp_connection->hf_send_chld_x = 0; 957 hfp_connection->ok_pending = 1; 958 hfp_hf_send_chld(hfp_connection->rfcomm_cid, hfp_connection->hf_send_chld_x_index); 959 return; 960 } 961 962 if (hfp_connection->hf_send_dtmf_code){ 963 char code = hfp_connection->hf_send_dtmf_code; 964 hfp_connection->hf_send_dtmf_code = 0; 965 hfp_connection->ok_pending = 1; 966 hfp_hf_send_dtmf(hfp_connection->rfcomm_cid, code); 967 return; 968 } 969 970 if (hfp_connection->hf_send_binp){ 971 hfp_connection->hf_send_binp = 0; 972 hfp_connection->ok_pending = 1; 973 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 974 return; 975 } 976 977 if (hfp_connection->hf_send_clcc){ 978 hfp_connection->hf_send_clcc = 0; 979 hfp_connection->ok_pending = 1; 980 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 981 return; 982 } 983 984 if (hfp_connection->hf_send_rrh){ 985 hfp_connection->hf_send_rrh = 0; 986 char buffer[20]; 987 switch (hfp_connection->hf_send_rrh_command){ 988 case '?': 989 snprintf(buffer, sizeof(buffer), "AT%s?\r", 990 HFP_RESPONSE_AND_HOLD); 991 buffer[sizeof(buffer) - 1] = 0; 992 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 993 return; 994 case '0': 995 case '1': 996 case '2': 997 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", 998 HFP_RESPONSE_AND_HOLD, 999 hfp_connection->hf_send_rrh_command); 1000 buffer[sizeof(buffer) - 1] = 0; 1001 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1002 return; 1003 default: 1004 break; 1005 } 1006 return; 1007 } 1008 1009 if (hfp_connection->hf_send_cnum){ 1010 hfp_connection->hf_send_cnum = 0; 1011 char buffer[20]; 1012 snprintf(buffer, sizeof(buffer), "AT%s\r", 1013 HFP_SUBSCRIBER_NUMBER_INFORMATION); 1014 buffer[sizeof(buffer) - 1] = 0; 1015 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1016 return; 1017 } 1018 1019 // update HF indicators 1020 if (hfp_connection->generic_status_update_bitmap){ 1021 int i; 1022 for (i=0; i < hfp_hf_indicators_nr; i++){ 1023 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 1024 if (hfp_connection->generic_status_indicators[i].state){ 1025 hfp_connection->ok_pending = 1; 1026 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 1027 char buffer[30]; 1028 snprintf(buffer, sizeof(buffer), "AT%s=%u,%u\r", 1029 HFP_TRANSFER_HF_INDICATOR_STATUS, 1030 hfp_hf_indicators[i], 1031 (unsigned int)hfp_hf_indicators_value[i]); 1032 buffer[sizeof(buffer) - 1] = 0; 1033 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1034 } else { 1035 log_info("Not sending HF indicator %u as it is disabled", hfp_hf_indicators[i]); 1036 } 1037 return; 1038 } 1039 } 1040 } 1041 1042 if (done) return; 1043 // deal with disconnect 1044 switch (hfp_connection->state){ 1045 case HFP_W2_DISCONNECT_RFCOMM: 1046 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1047 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1048 break; 1049 1050 default: 1051 break; 1052 } 1053 } 1054 1055 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 1056 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 1057 1058 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 1059 1060 uint8_t i; 1061 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1062 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1063 } 1064 1065 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1066 hfp_connection->ag_indicators[i].status_changed = 0; 1067 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1068 } 1069 1070 // restore volume settings 1071 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 1072 hfp_connection->send_speaker_gain = 1; 1073 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 1074 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 1075 hfp_connection->send_microphone_gain = 1; 1076 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 1077 // enable all indicators 1078 for (i=0; i < hfp_hf_indicators_nr; i++){ 1079 hfp_connection->generic_status_indicators[i].uuid = hfp_hf_indicators[i]; 1080 hfp_connection->generic_status_indicators[i].state = 1; 1081 } 1082 } 1083 1084 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 1085 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_hf_codecs_nr, hfp_hf_codecs)){ 1086 // Codec supported, confirm 1087 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1088 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1089 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 1090 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 1091 1092 hfp_connection->hf_send_codec_confirm = true; 1093 } else { 1094 // Codec not supported, send supported codecs 1095 hfp_connection->codec_confirmed = 0; 1096 hfp_connection->suggested_codec = 0; 1097 hfp_connection->negotiated_codec = 0; 1098 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1099 1100 hfp_connection->hf_send_supported_codecs = true; 1101 } 1102 } 1103 1104 static bool hfp_hf_switch_on_ok_pending(hfp_connection_t *hfp_connection, uint8_t status){ 1105 bool event_emited = true; 1106 1107 switch (hfp_connection->response_pending_for_command){ 1108 case HFP_CMD_TURN_OFF_EC_AND_NR: 1109 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 1110 break; 1111 default: 1112 event_emited = false; 1113 1114 switch (hfp_connection->state){ 1115 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 1116 if (has_codec_negotiation_feature(hfp_connection)){ 1117 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 1118 break; 1119 } 1120 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1121 break; 1122 1123 case HFP_W4_NOTIFY_ON_CODECS: 1124 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1125 break; 1126 1127 case HFP_W4_RETRIEVE_INDICATORS: 1128 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 1129 break; 1130 1131 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 1132 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 1133 break; 1134 1135 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 1136 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 1137 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 1138 break; 1139 } 1140 if (has_hf_indicators_feature(hfp_connection)){ 1141 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1142 break; 1143 } 1144 hfp_ag_slc_established(hfp_connection); 1145 break; 1146 1147 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 1148 if (has_hf_indicators_feature(hfp_connection)){ 1149 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1150 break; 1151 } 1152 hfp_ag_slc_established(hfp_connection); 1153 break; 1154 1155 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 1156 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 1157 break; 1158 1159 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 1160 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 1161 break; 1162 1163 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 1164 hfp_ag_slc_established(hfp_connection); 1165 break; 1166 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1167 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 1168 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 1169 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1170 break; 1171 } 1172 1173 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 1174 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 1175 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1176 break; 1177 } 1178 1179 switch (hfp_connection->hf_query_operator_state){ 1180 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 1181 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1182 break; 1183 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 1184 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 1185 hfp_emit_network_operator_event(hfp_connection); 1186 break; 1187 default: 1188 break; 1189 } 1190 1191 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1192 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1193 break; 1194 } 1195 1196 switch (hfp_connection->codecs_state){ 1197 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1198 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1199 break; 1200 case HFP_CODECS_HF_CONFIRMED_CODEC: 1201 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1202 break; 1203 default: 1204 break; 1205 } 1206 hfp_hf_voice_recognition_state_machine(hfp_connection); 1207 break; 1208 case HFP_AUDIO_CONNECTION_ESTABLISHED: 1209 hfp_hf_voice_recognition_state_machine(hfp_connection); 1210 break; 1211 default: 1212 break; 1213 } 1214 break; 1215 } 1216 1217 // done 1218 hfp_connection->response_pending_for_command = HFP_CMD_NONE; 1219 hfp_connection->ok_pending = 0; 1220 hfp_connection->command = HFP_CMD_NONE; 1221 return event_emited; 1222 } 1223 1224 static bool hfp_is_ringing(hfp_callsetup_status_t callsetup_status){ 1225 switch (callsetup_status){ 1226 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1227 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1228 return true; 1229 default: 1230 return false; 1231 } 1232 } 1233 1234 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1235 uint16_t i; 1236 1237 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1238 if (hfp_connection->ag_indicators[i].status_changed) { 1239 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1240 hfp_callsetup_status_t new_hf_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1241 bool ringing_old = hfp_is_ringing(hfp_hf_callsetup_status); 1242 bool ringing_new = hfp_is_ringing(new_hf_callsetup_status); 1243 if (ringing_old != ringing_new){ 1244 if (ringing_new){ 1245 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGING); 1246 } else { 1247 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGING); 1248 } 1249 } 1250 hfp_hf_callsetup_status = new_hf_callsetup_status; 1251 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1252 hfp_hf_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1253 // avoid set but not used warning 1254 (void) hfp_hf_callheld_status; 1255 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1256 hfp_call_status_t new_hf_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1257 if (hfp_hf_call_status != new_hf_call_status){ 1258 if (new_hf_call_status == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 1259 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1260 } else { 1261 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1262 } 1263 } 1264 hfp_hf_call_status = new_hf_call_status; 1265 } 1266 hfp_connection->ag_indicators[i].status_changed = 0; 1267 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1268 break; 1269 } 1270 } 1271 } 1272 1273 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1274 int value; 1275 int i; 1276 bool event_emited; 1277 1278 switch (hfp_connection->command){ 1279 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1280 hfp_connection->command = HFP_CMD_NONE; 1281 hfp_hf_emit_subscriber_information(hfp_connection, 0); 1282 break; 1283 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1284 hfp_connection->command = HFP_CMD_NONE; 1285 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1286 break; 1287 case HFP_CMD_LIST_CURRENT_CALLS: 1288 hfp_connection->command = HFP_CMD_NONE; 1289 hfp_hf_emit_enhanced_call_status(hfp_connection); 1290 break; 1291 case HFP_CMD_SET_SPEAKER_GAIN: 1292 hfp_connection->command = HFP_CMD_NONE; 1293 value = btstack_atoi((char*)hfp_connection->line_buffer); 1294 hfp_hf_speaker_gain = value; 1295 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1296 break; 1297 case HFP_CMD_SET_MICROPHONE_GAIN: 1298 hfp_connection->command = HFP_CMD_NONE; 1299 value = btstack_atoi((char*)hfp_connection->line_buffer); 1300 hfp_hf_microphone_gain = value; 1301 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1302 break; 1303 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1304 hfp_connection->command = HFP_CMD_NONE; 1305 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1306 break; 1307 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1308 hfp_connection->command = HFP_CMD_NONE; 1309 hfp_hf_emit_type_and_number(hfp_connection, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION); 1310 break; 1311 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1312 hfp_connection->command = HFP_CMD_NONE; 1313 hfp_hf_emit_type_and_number(hfp_connection, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION); 1314 break; 1315 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1316 hfp_connection->command = HFP_CMD_NONE; 1317 hfp_connection->ok_pending = 0; 1318 hfp_connection->extended_audio_gateway_error = 0; 1319 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1320 break; 1321 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 1322 break; 1323 case HFP_CMD_ERROR: 1324 switch (hfp_connection->state){ 1325 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1326 switch (hfp_connection->codecs_state){ 1327 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1328 hfp_reset_context_flags(hfp_connection); 1329 hfp_emit_sco_event(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 0, hfp_connection->remote_addr, hfp_connection->negotiated_codec); 1330 return; 1331 default: 1332 break; 1333 } 1334 break; 1335 default: 1336 break; 1337 } 1338 1339 // handle error response for voice activation (HF initiated) 1340 switch(hfp_connection->vra_state_requested){ 1341 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1342 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1343 break; 1344 default: 1345 if (hfp_connection->vra_state_requested == hfp_connection->vra_state){ 1346 break; 1347 } 1348 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1349 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1350 hfp_reset_context_flags(hfp_connection); 1351 return; 1352 } 1353 event_emited = hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1354 if (!event_emited){ 1355 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 1); 1356 } 1357 hfp_reset_context_flags(hfp_connection); 1358 break; 1359 1360 case HFP_CMD_OK: 1361 hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_SUCCESS); 1362 break; 1363 case HFP_CMD_RING: 1364 hfp_connection->command = HFP_CMD_NONE; 1365 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1366 break; 1367 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1368 hfp_connection->command = HFP_CMD_NONE; 1369 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1370 break; 1371 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1372 hfp_connection->command = HFP_CMD_NONE; 1373 // report status after SLC established 1374 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 1375 break; 1376 } 1377 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1378 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1379 } 1380 break; 1381 case HFP_CMD_AG_SUGGESTED_CODEC: 1382 hfp_connection->command = HFP_CMD_NONE; 1383 hfp_hf_handle_suggested_codec(hfp_connection); 1384 break; 1385 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1386 hfp_emit_event(hfp_connection, HFP_SUBEVENT_IN_BAND_RING_TONE, get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE)); 1387 default: 1388 break; 1389 } 1390 } 1391 1392 static int hfp_parser_is_end_of_line(uint8_t byte){ 1393 return (byte == '\n') || (byte == '\r'); 1394 } 1395 1396 static void hfp_hf_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 1397 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1398 if (size < 1) return; 1399 1400 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1401 #ifdef ENABLE_HFP_AT_MESSAGES 1402 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1403 #endif 1404 1405 // process messages byte-wise 1406 uint8_t pos; 1407 for (pos = 0; pos < size; pos++){ 1408 hfp_parse(hfp_connection, packet[pos], 1); 1409 // parse until end of line "\r" or "\n" 1410 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1411 hfp_hf_handle_rfcomm_command(hfp_connection); 1412 } 1413 } 1414 1415 static void hfp_hf_run(void){ 1416 btstack_linked_list_iterator_t it; 1417 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1418 while (btstack_linked_list_iterator_has_next(&it)){ 1419 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1420 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1421 hfp_hf_run_for_context(hfp_connection); 1422 } 1423 } 1424 1425 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1426 hfp_connection_t * hfp_connection; 1427 switch (packet_type){ 1428 case RFCOMM_DATA_PACKET: 1429 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1430 if (!hfp_connection) return; 1431 hfp_hf_handle_rfcomm_data(hfp_connection, packet, size); 1432 hfp_hf_run_for_context(hfp_connection); 1433 return; 1434 case HCI_EVENT_PACKET: 1435 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1436 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1437 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1438 return; 1439 } 1440 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1441 break; 1442 default: 1443 break; 1444 } 1445 hfp_hf_run(); 1446 } 1447 1448 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1449 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1450 hfp_hf_run(); 1451 } 1452 1453 static void hfp_hf_set_defaults(void){ 1454 hfp_hf_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1455 hfp_hf_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1456 hfp_hf_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1457 hfp_hf_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1458 hfp_hf_codecs_nr = 0; 1459 hfp_hf_speaker_gain = 9; 1460 hfp_hf_microphone_gain = 9; 1461 hfp_hf_indicators_nr = 0; 1462 } 1463 1464 uint8_t hfp_hf_init(uint16_t rfcomm_channel_nr){ 1465 uint8_t status = rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1466 if (status != ERROR_CODE_SUCCESS){ 1467 return status; 1468 } 1469 1470 hfp_init(); 1471 hfp_hf_set_defaults(); 1472 1473 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1474 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1475 1476 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1477 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1478 return ERROR_CODE_SUCCESS; 1479 } 1480 1481 void hfp_hf_deinit(void){ 1482 hfp_deinit(); 1483 hfp_hf_set_defaults(); 1484 1485 hfp_hf_callback = NULL; 1486 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1487 (void) memset(hfp_hf_phone_number, 0, sizeof(hfp_hf_phone_number)); 1488 } 1489 1490 void hfp_hf_init_codecs(int codecs_nr, const uint8_t * codecs){ 1491 btstack_assert(codecs_nr < HFP_MAX_NUM_CODECS); 1492 1493 hfp_hf_codecs_nr = codecs_nr; 1494 int i; 1495 for (i=0; i<codecs_nr; i++){ 1496 hfp_hf_codecs[i] = codecs[i]; 1497 } 1498 } 1499 1500 void hfp_hf_init_supported_features(uint32_t supported_features){ 1501 hfp_hf_supported_features = supported_features; 1502 } 1503 1504 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1505 btstack_assert(hfp_hf_indicators_nr < HFP_MAX_NUM_INDICATORS); 1506 1507 hfp_hf_indicators_nr = indicators_nr; 1508 int i; 1509 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 1510 hfp_hf_indicators[i] = indicators[i]; 1511 } 1512 } 1513 1514 uint8_t hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1515 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1516 } 1517 1518 uint8_t hfp_hf_release_service_level_connection(hci_con_handle_t acl_handle){ 1519 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1520 if (!hfp_connection){ 1521 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1522 } 1523 hfp_trigger_release_service_level_connection(hfp_connection); 1524 hfp_hf_run_for_context(hfp_connection); 1525 return ERROR_CODE_SUCCESS; 1526 } 1527 1528 static uint8_t hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1529 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1530 if (!hfp_connection) { 1531 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1532 } 1533 hfp_connection->enable_status_update_for_ag_indicators = enable; 1534 hfp_hf_run_for_context(hfp_connection); 1535 return ERROR_CODE_SUCCESS; 1536 } 1537 1538 uint8_t hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1539 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1540 } 1541 1542 uint8_t hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1543 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1544 } 1545 1546 // TODO: returned ERROR - wrong format 1547 uint8_t hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1548 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1549 if (!hfp_connection) { 1550 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1551 } 1552 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1553 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1554 hfp_hf_run_for_context(hfp_connection); 1555 return ERROR_CODE_SUCCESS; 1556 } 1557 1558 uint8_t hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1559 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1560 if (!hfp_connection) { 1561 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1562 } 1563 1564 switch (hfp_connection->hf_query_operator_state){ 1565 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1566 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1567 break; 1568 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1569 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1570 break; 1571 default: 1572 return ERROR_CODE_COMMAND_DISALLOWED; 1573 } 1574 hfp_hf_run_for_context(hfp_connection); 1575 return ERROR_CODE_SUCCESS; 1576 } 1577 1578 static uint8_t hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1579 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1580 if (!hfp_connection) { 1581 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1582 } 1583 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1584 hfp_hf_run_for_context(hfp_connection); 1585 return ERROR_CODE_SUCCESS; 1586 } 1587 1588 1589 uint8_t hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1590 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1591 } 1592 1593 uint8_t hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1594 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1595 } 1596 1597 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1598 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_hf_supported_features & (1 << HFP_HFSF_ESCO_S4)); 1599 } 1600 1601 uint8_t hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1602 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1603 if (!hfp_connection) { 1604 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1605 } 1606 1607 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1608 return ERROR_CODE_COMMAND_DISALLOWED; 1609 } 1610 1611 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 1612 return ERROR_CODE_COMMAND_DISALLOWED; 1613 } 1614 if (has_codec_negotiation_feature(hfp_connection)) { 1615 switch (hfp_connection->codecs_state) { 1616 case HFP_CODECS_W4_AG_COMMON_CODEC: 1617 break; 1618 case HFP_CODECS_EXCHANGED: 1619 hfp_connection->trigger_codec_exchange = 1; 1620 break; 1621 default: 1622 hfp_connection->codec_confirmed = 0; 1623 hfp_connection->suggested_codec = 0; 1624 hfp_connection->negotiated_codec = 0; 1625 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1626 hfp_connection->trigger_codec_exchange = 1; 1627 break; 1628 } 1629 } else { 1630 log_info("no codec negotiation feature, use CVSD"); 1631 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1632 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1633 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1634 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1635 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1636 hfp_connection->establish_audio_connection = 1; 1637 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1638 } 1639 1640 hfp_hf_run_for_context(hfp_connection); 1641 return ERROR_CODE_SUCCESS; 1642 } 1643 1644 uint8_t hfp_hf_release_audio_connection(hci_con_handle_t acl_handle){ 1645 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1646 if (!hfp_connection) { 1647 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1648 } 1649 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 1650 return ERROR_CODE_COMMAND_DISALLOWED; 1651 } 1652 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 1653 if (status == ERROR_CODE_SUCCESS){ 1654 hfp_hf_run_for_context(hfp_connection); 1655 } 1656 return ERROR_CODE_SUCCESS; 1657 } 1658 1659 uint8_t hfp_hf_answer_incoming_call(hci_con_handle_t acl_handle){ 1660 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1661 if (!hfp_connection) { 1662 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1663 } 1664 1665 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1666 hfp_connection->hf_answer_incoming_call = 1; 1667 hfp_hf_run_for_context(hfp_connection); 1668 } else { 1669 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_hf_callsetup_status); 1670 return ERROR_CODE_COMMAND_DISALLOWED; 1671 } 1672 return ERROR_CODE_SUCCESS; 1673 } 1674 1675 uint8_t hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1676 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1677 if (!hfp_connection) { 1678 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1679 } 1680 hfp_connection->hf_send_chup = 1; 1681 hfp_hf_run_for_context(hfp_connection); 1682 return ERROR_CODE_SUCCESS; 1683 } 1684 1685 uint8_t hfp_hf_reject_incoming_call(hci_con_handle_t acl_handle){ 1686 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1687 if (!hfp_connection) { 1688 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1689 } 1690 1691 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1692 hfp_connection->hf_send_chup = 1; 1693 hfp_hf_run_for_context(hfp_connection); 1694 } 1695 return ERROR_CODE_SUCCESS; 1696 } 1697 1698 uint8_t hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1699 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1700 if (!hfp_connection) { 1701 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1702 } 1703 1704 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1705 hfp_connection->hf_send_chld_0 = 1; 1706 hfp_hf_run_for_context(hfp_connection); 1707 } 1708 return ERROR_CODE_SUCCESS; 1709 } 1710 1711 uint8_t hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1712 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1713 if (!hfp_connection) { 1714 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1715 } 1716 1717 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1718 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1719 hfp_connection->hf_send_chld_1 = 1; 1720 hfp_hf_run_for_context(hfp_connection); 1721 } 1722 return ERROR_CODE_SUCCESS; 1723 } 1724 1725 uint8_t hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1726 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1727 if (!hfp_connection) { 1728 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1729 } 1730 1731 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1732 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1733 hfp_connection->hf_send_chld_2 = 1; 1734 hfp_hf_run_for_context(hfp_connection); 1735 } 1736 return ERROR_CODE_SUCCESS; 1737 } 1738 1739 uint8_t hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1740 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1741 if (!hfp_connection) { 1742 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1743 } 1744 1745 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1746 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1747 hfp_connection->hf_send_chld_3 = 1; 1748 hfp_hf_run_for_context(hfp_connection); 1749 } 1750 return ERROR_CODE_SUCCESS; 1751 } 1752 1753 uint8_t hfp_hf_connect_calls(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 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1760 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1761 hfp_connection->hf_send_chld_4 = 1; 1762 hfp_hf_run_for_context(hfp_connection); 1763 } 1764 return ERROR_CODE_SUCCESS; 1765 } 1766 1767 uint8_t hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1768 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1769 if (!hfp_connection) { 1770 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1771 } 1772 1773 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1774 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1775 hfp_connection->hf_send_chld_x = 1; 1776 hfp_connection->hf_send_chld_x_index = 10 + index; 1777 hfp_hf_run_for_context(hfp_connection); 1778 } 1779 return ERROR_CODE_SUCCESS; 1780 } 1781 1782 uint8_t hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 1783 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1784 if (!hfp_connection) { 1785 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1786 } 1787 1788 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1789 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1790 hfp_connection->hf_send_chld_x = 1; 1791 hfp_connection->hf_send_chld_x_index = 20 + index; 1792 hfp_hf_run_for_context(hfp_connection); 1793 } 1794 return ERROR_CODE_SUCCESS; 1795 } 1796 1797 uint8_t hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 1798 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1799 if (!hfp_connection) { 1800 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1801 } 1802 1803 hfp_connection->hf_initiate_outgoing_call = 1; 1804 snprintf(hfp_hf_phone_number, sizeof(hfp_hf_phone_number), "%s", number); 1805 hfp_hf_run_for_context(hfp_connection); 1806 return ERROR_CODE_SUCCESS; 1807 } 1808 1809 uint8_t hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 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 1815 hfp_connection->hf_initiate_memory_dialing = 1; 1816 hfp_connection->memory_id = memory_id; 1817 1818 hfp_hf_run_for_context(hfp_connection); 1819 return ERROR_CODE_SUCCESS; 1820 } 1821 1822 uint8_t hfp_hf_redial_last_number(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_initiate_redial_last_number = 1; 1829 hfp_hf_run_for_context(hfp_connection); 1830 return ERROR_CODE_SUCCESS; 1831 } 1832 1833 uint8_t hfp_hf_activate_call_waiting_notification(hci_con_handle_t acl_handle){ 1834 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1835 if (!hfp_connection) { 1836 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1837 } 1838 1839 hfp_connection->hf_activate_call_waiting_notification = 1; 1840 hfp_hf_run_for_context(hfp_connection); 1841 return ERROR_CODE_SUCCESS; 1842 } 1843 1844 1845 uint8_t hfp_hf_deactivate_call_waiting_notification(hci_con_handle_t acl_handle){ 1846 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1847 if (!hfp_connection) { 1848 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1849 } 1850 1851 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1852 hfp_hf_run_for_context(hfp_connection); 1853 return ERROR_CODE_SUCCESS; 1854 } 1855 1856 1857 uint8_t hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1858 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1859 if (!hfp_connection) { 1860 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1861 } 1862 1863 hfp_connection->hf_activate_calling_line_notification = 1; 1864 hfp_hf_run_for_context(hfp_connection); 1865 return ERROR_CODE_SUCCESS; 1866 } 1867 1868 uint8_t hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1869 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1870 if (!hfp_connection) { 1871 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1872 } 1873 1874 hfp_connection->hf_deactivate_calling_line_notification = 1; 1875 hfp_hf_run_for_context(hfp_connection); 1876 return ERROR_CODE_SUCCESS; 1877 } 1878 1879 static bool hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection_t * hfp_connection){ 1880 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_EC_NR_FUNCTION); 1881 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_EC_NR_FUNCTION); 1882 return hf && ag; 1883 } 1884 1885 uint8_t hfp_hf_deactivate_echo_canceling_and_noise_reduction(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_hf_echo_canceling_and_noise_reduction_supported(hfp_connection)){ 1891 return ERROR_CODE_COMMAND_DISALLOWED; 1892 } 1893 1894 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1895 hfp_hf_run_for_context(hfp_connection); 1896 return ERROR_CODE_SUCCESS; 1897 } 1898 1899 uint8_t hfp_hf_activate_voice_recognition(hci_con_handle_t acl_handle){ 1900 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1901 if (!hfp_connection) { 1902 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1903 } 1904 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1905 return ERROR_CODE_COMMAND_DISALLOWED; 1906 } 1907 1908 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1909 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1910 if (!enhanced_vra_supported && !legacy_vra_supported){ 1911 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1912 } 1913 1914 switch (hfp_connection->vra_state){ 1915 case HFP_VRA_VOICE_RECOGNITION_OFF: 1916 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1917 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 1918 hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 1919 break; 1920 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1921 hfp_connection->activate_voice_recognition = true; 1922 break; 1923 default: 1924 return ERROR_CODE_COMMAND_DISALLOWED; 1925 } 1926 1927 hfp_hf_run_for_context(hfp_connection); 1928 return ERROR_CODE_SUCCESS; 1929 } 1930 1931 uint8_t hfp_hf_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 1932 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1933 if (!hfp_connection) { 1934 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1935 } 1936 1937 if (hfp_connection->emit_vra_enabled_after_audio_established){ 1938 return ERROR_CODE_COMMAND_DISALLOWED; 1939 } 1940 1941 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 1942 return ERROR_CODE_COMMAND_DISALLOWED; 1943 } 1944 1945 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1946 if (!enhanced_vra_supported){ 1947 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1948 } 1949 1950 switch (hfp_connection->vra_state){ 1951 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 1952 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1953 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 1954 break; 1955 default: 1956 return ERROR_CODE_COMMAND_DISALLOWED; 1957 } 1958 1959 hfp_hf_run_for_context(hfp_connection); 1960 return ERROR_CODE_SUCCESS; 1961 } 1962 1963 1964 uint8_t hfp_hf_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 1965 // return deactivate_voice_recognition(acl_handle, false); 1966 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1967 if (!hfp_connection) { 1968 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1969 } 1970 1971 if (hfp_connection->emit_vra_enabled_after_audio_established){ 1972 return ERROR_CODE_COMMAND_DISALLOWED; 1973 } 1974 1975 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 1976 hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1977 return ERROR_CODE_COMMAND_DISALLOWED; 1978 } 1979 1980 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1981 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1982 if (!enhanced_vra_supported && !legacy_vra_supported){ 1983 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1984 } 1985 1986 switch (hfp_connection->vra_state){ 1987 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 1988 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 1989 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1990 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1991 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 1992 break; 1993 1994 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 1995 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1996 hfp_connection->deactivate_voice_recognition = true; 1997 break; 1998 1999 case HFP_VRA_VOICE_RECOGNITION_OFF: 2000 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 2001 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 2002 default: 2003 return ERROR_CODE_COMMAND_DISALLOWED; 2004 } 2005 2006 hfp_hf_run_for_context(hfp_connection); 2007 return ERROR_CODE_SUCCESS; 2008 } 2009 2010 uint8_t hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 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 2016 if (hfp_connection->microphone_gain == gain) { 2017 return ERROR_CODE_SUCCESS; 2018 } 2019 2020 if ((gain < 0) || (gain > 15)){ 2021 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2022 return ERROR_CODE_COMMAND_DISALLOWED; 2023 } 2024 2025 hfp_connection->microphone_gain = gain; 2026 hfp_connection->send_microphone_gain = 1; 2027 hfp_hf_run_for_context(hfp_connection); 2028 return ERROR_CODE_SUCCESS; 2029 } 2030 2031 uint8_t hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 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 2037 if (hfp_connection->speaker_gain == gain){ 2038 return ERROR_CODE_SUCCESS; 2039 } 2040 2041 if ((gain < 0) || (gain > 15)){ 2042 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2043 return ERROR_CODE_COMMAND_DISALLOWED; 2044 } 2045 2046 hfp_connection->speaker_gain = gain; 2047 hfp_connection->send_speaker_gain = 1; 2048 hfp_hf_run_for_context(hfp_connection); 2049 return ERROR_CODE_SUCCESS; 2050 } 2051 2052 uint8_t hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 2053 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2054 if (!hfp_connection) { 2055 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2056 } 2057 hfp_connection->hf_send_dtmf_code = code; 2058 hfp_hf_run_for_context(hfp_connection); 2059 return ERROR_CODE_SUCCESS; 2060 } 2061 2062 uint8_t hfp_hf_request_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2063 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2064 if (!hfp_connection) { 2065 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2066 } 2067 hfp_connection->hf_send_binp = 1; 2068 hfp_hf_run_for_context(hfp_connection); 2069 return ERROR_CODE_SUCCESS; 2070 } 2071 2072 uint8_t hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 2073 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2074 if (!hfp_connection) { 2075 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2076 } 2077 hfp_connection->hf_send_clcc = 1; 2078 hfp_hf_run_for_context(hfp_connection); 2079 return ERROR_CODE_SUCCESS; 2080 } 2081 2082 2083 uint8_t hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 2084 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2085 if (!hfp_connection) { 2086 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2087 } 2088 hfp_connection->hf_send_rrh = 1; 2089 hfp_connection->hf_send_rrh_command = '?'; 2090 hfp_hf_run_for_context(hfp_connection); 2091 return ERROR_CODE_SUCCESS; 2092 } 2093 2094 uint8_t hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 2095 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2096 if (!hfp_connection) { 2097 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2098 } 2099 hfp_connection->hf_send_rrh = 1; 2100 hfp_connection->hf_send_rrh_command = '0'; 2101 hfp_hf_run_for_context(hfp_connection); 2102 return ERROR_CODE_SUCCESS; 2103 } 2104 2105 uint8_t hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 2106 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2107 if (!hfp_connection) { 2108 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2109 } 2110 hfp_connection->hf_send_rrh = 1; 2111 hfp_connection->hf_send_rrh_command = '1'; 2112 hfp_hf_run_for_context(hfp_connection); 2113 return ERROR_CODE_SUCCESS; 2114 } 2115 2116 uint8_t hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 2117 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2118 if (!hfp_connection) { 2119 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2120 } 2121 hfp_connection->hf_send_rrh = 1; 2122 hfp_connection->hf_send_rrh_command = '2'; 2123 hfp_hf_run_for_context(hfp_connection); 2124 return ERROR_CODE_SUCCESS; 2125 } 2126 2127 uint8_t hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 2128 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2129 if (!hfp_connection) { 2130 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2131 } 2132 hfp_connection->hf_send_cnum = 1; 2133 hfp_hf_run_for_context(hfp_connection); 2134 return ERROR_CODE_SUCCESS; 2135 } 2136 2137 uint8_t hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 2138 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2139 if (!hfp_connection) { 2140 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2141 } 2142 // find index for assigned number 2143 int i; 2144 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 2145 if (hfp_hf_indicators[i] == assigned_number){ 2146 // set value 2147 hfp_hf_indicators_value[i] = value; 2148 // mark for update 2149 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 2150 hfp_connection->generic_status_update_bitmap |= (1<<i); 2151 // send update 2152 hfp_hf_run_for_context(hfp_connection); 2153 } 2154 return ERROR_CODE_SUCCESS; 2155 } 2156 } 2157 return ERROR_CODE_SUCCESS; 2158 } 2159 2160 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 2161 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2162 if (!hfp_connection) { 2163 return 0; 2164 } 2165 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 2166 } 2167 2168 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){ 2169 if (!name){ 2170 name = hfp_hf_default_service_name; 2171 } 2172 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 2173 2174 // Construct SupportedFeatures for SDP bitmap: 2175 // 2176 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2177 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2178 // 2179 // Wide band speech (bit 5) requires Codec negotiation 2180 // 2181 uint16_t sdp_features = supported_features & 0x1f; 2182 if ( (wide_band_speech != 0) && (supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION))){ 2183 sdp_features |= 1 << 5; 2184 } 2185 2186 if (supported_features & (1 << HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2187 sdp_features |= 1 << 6; 2188 } 2189 2190 if (supported_features & (1 << HFP_HFSF_VOICE_RECOGNITION_TEXT)){ 2191 sdp_features |= 1 << 7; 2192 } 2193 2194 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2195 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2196 } 2197 2198 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 2199 btstack_assert(callback != NULL); 2200 2201 hfp_hf_callback = callback; 2202 hfp_set_hf_callback(callback); 2203 } 2204