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 functions */ 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 uint16_t bnip_number_len = btstack_min(strlen(hfp_connection->bnip_number), sizeof(hfp_connection->bnip_number)-1); 144 uint8_t event[7 + sizeof(hfp_connection->bnip_number)]; 145 event[0] = HCI_EVENT_HFP_META; 146 event[1] = 6 + bnip_number_len; 147 event[2] = HFP_SUBEVENT_SUBSCRIBER_NUMBER_INFORMATION; 148 little_endian_store_16(event, 3, hfp_connection->acl_handle); 149 event[5] = status; 150 event[6] = hfp_connection->bnip_type; 151 memcpy(&event[7], hfp_connection->bnip_number, bnip_number_len); 152 event[7 + bnip_number_len] = 0; 153 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 8 + bnip_number_len); 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 uint16_t bnip_number_len = btstack_min(strlen(hfp_connection->bnip_number), sizeof(hfp_connection->bnip_number)-1); 159 uint8_t event[6 + sizeof(hfp_connection->bnip_number)]; 160 event[0] = HCI_EVENT_HFP_META; 161 event[1] = 5 + bnip_number_len; 162 event[2] = event_subtype; 163 little_endian_store_16(event, 3, hfp_connection->acl_handle); 164 event[5] = hfp_connection->bnip_type; 165 memcpy(&event[6], hfp_connection->bnip_number, bnip_number_len); 166 event[6 + bnip_number_len] = 0; 167 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 7 + bnip_number_len); 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 uint16_t bnip_number_len = btstack_min(strlen(hfp_connection->bnip_number), sizeof(hfp_connection->bnip_number)-1); 173 uint8_t event[11 + sizeof(hfp_connection->bnip_number)]; 174 event[0] = HCI_EVENT_HFP_META; 175 event[1] = 10 + bnip_number_len; 176 event[2] = HFP_SUBEVENT_ENHANCED_CALL_STATUS; 177 little_endian_store_16(event, 3, hfp_connection->acl_handle); 178 event[4] = hfp_connection->clcc_idx; 179 event[5] = hfp_connection->clcc_dir; 180 event[6] = hfp_connection->clcc_status; 181 event[7] = hfp_connection->clcc_mode; 182 event[8] = hfp_connection->clcc_mpty; 183 event[9] = hfp_connection->bnip_type; 184 memcpy(&event[10], hfp_connection->bnip_number, bnip_number_len); 185 event[11+bnip_number_len] = 0; 186 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 12+bnip_number_len); 187 } 188 189 static void hfp_emit_ag_indicator_mapping_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 190 if (hfp_hf_callback == NULL) return; 191 uint8_t event[8 + HFP_MAX_INDICATOR_DESC_SIZE]; 192 uint16_t indicator_len = btstack_min(strlen(indicator->name), HFP_MAX_INDICATOR_DESC_SIZE-1); 193 event[0] = HCI_EVENT_HFP_META; 194 event[1] = 7 + indicator_len; 195 event[2] = HFP_SUBEVENT_AG_INDICATOR_MAPPING; 196 little_endian_store_16(event, 3, hfp_connection->acl_handle); 197 event[5] = indicator->index; 198 event[6] = indicator->min_range; 199 event[7] = indicator->max_range; 200 memcpy(&event[8], indicator->name, indicator_len); 201 event[8+indicator_len] = 0; 202 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 9 + indicator_len); 203 } 204 205 static void hfp_emit_ag_indicator_status_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 206 if (hfp_hf_callback == NULL) return; 207 uint8_t event[12+HFP_MAX_INDICATOR_DESC_SIZE]; 208 uint16_t indicator_len = btstack_min(strlen(indicator->name), HFP_MAX_INDICATOR_DESC_SIZE-1); 209 event[0] = HCI_EVENT_HFP_META; 210 event[1] = 11 + indicator_len; 211 event[2] = HFP_SUBEVENT_AG_INDICATOR_STATUS_CHANGED; 212 little_endian_store_16(event, 3, hfp_connection->acl_handle); 213 event[5] = indicator->index; 214 event[6] = indicator->status; 215 event[7] = indicator->min_range; 216 event[8] = indicator->max_range; 217 event[9] = indicator->mandatory; 218 event[10] = indicator->enabled; 219 event[11] = indicator->status_changed; 220 memcpy(&event[12], indicator->name, indicator_len); 221 event[12+indicator_len] = 0; 222 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 13 + indicator_len); 223 } 224 225 static void hfp_emit_network_operator_event(const hfp_connection_t * hfp_connection){ 226 if (hfp_hf_callback == NULL) return; 227 uint16_t operator_len = btstack_min(strlen(hfp_connection->network_operator.name), HFP_MAX_NETWORK_OPERATOR_NAME_SIZE-1); 228 uint8_t event[7+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE]; 229 event[0] = HCI_EVENT_HFP_META; 230 event[1] = sizeof(event) - 2; 231 event[2] = 6 + operator_len; 232 little_endian_store_16(event, 3, hfp_connection->acl_handle); 233 event[5] = hfp_connection->network_operator.mode; 234 event[6] = hfp_connection->network_operator.format; 235 memcpy(&event[7], hfp_connection->network_operator.name, operator_len); 236 event[7+operator_len] = 0; 237 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 8 + operator_len); 238 } 239 240 241 static void hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection_t * hfp_connection){ 242 btstack_assert(hfp_connection != NULL); 243 uint8_t event[HFP_MAX_VR_TEXT_SIZE + 11]; 244 int pos = 0; 245 event[pos++] = HCI_EVENT_HFP_META; 246 event[pos++] = sizeof(event) - 2; 247 event[pos++] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE; 248 little_endian_store_16(event, pos, hfp_connection->acl_handle); 249 pos += 2; 250 little_endian_store_16(event, pos, hfp_connection->ag_msg.text_id); 251 pos += 2; 252 event[pos++] = hfp_connection->ag_msg.text_type; 253 event[pos++] = hfp_connection->ag_msg.text_operation; 254 255 // length, zero ending is already in message 256 uint8_t * value = &hfp_connection->line_buffer[0]; 257 uint16_t value_length = hfp_connection->ag_vra_msg_length; 258 259 little_endian_store_16(event, pos, value_length); 260 pos += 2; 261 memcpy(&event[pos], value, value_length); 262 pos += value_length; 263 264 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 265 } 266 267 /* send commands */ 268 269 static inline int hfp_hf_send_cmd(uint16_t cid, const char * cmd){ 270 char buffer[20]; 271 snprintf(buffer, sizeof(buffer), "AT%s\r", cmd); 272 return send_str_over_rfcomm(cid, buffer); 273 } 274 275 static inline int hfp_hf_send_cmd_with_mark(uint16_t cid, const char * cmd, const char * mark){ 276 char buffer[20]; 277 snprintf(buffer, sizeof(buffer), "AT%s%s\r", cmd, mark); 278 return send_str_over_rfcomm(cid, buffer); 279 } 280 281 static inline int hfp_hf_send_cmd_with_int(uint16_t cid, const char * cmd, uint16_t value){ 282 char buffer[40]; 283 snprintf(buffer, sizeof(buffer), "AT%s=%d\r", cmd, value); 284 return send_str_over_rfcomm(cid, buffer); 285 } 286 287 static int hfp_hf_cmd_notify_on_codecs(uint16_t cid){ 288 char buffer[30]; 289 const int size = sizeof(buffer); 290 int offset = snprintf(buffer, size, "AT%s=", HFP_AVAILABLE_CODECS); 291 offset += join(buffer+offset, size-offset, hfp_hf_codecs, hfp_hf_codecs_nr); 292 offset += snprintf(buffer+offset, size-offset, "\r"); 293 return send_str_over_rfcomm(cid, buffer); 294 } 295 296 static int hfp_hf_cmd_activate_status_update_for_ag_indicator(uint16_t cid, uint32_t indicators_status, int indicators_nr){ 297 char buffer[50]; 298 const int size = sizeof(buffer); 299 int offset = snprintf(buffer, size, "AT%s=", HFP_UPDATE_ENABLE_STATUS_FOR_INDIVIDUAL_AG_INDICATORS); 300 offset += join_bitmap(buffer+offset, size-offset, indicators_status, indicators_nr); 301 offset += snprintf(buffer+offset, size-offset, "\r"); 302 return send_str_over_rfcomm(cid, buffer); 303 } 304 305 static int hfp_hf_cmd_list_supported_generic_status_indicators(uint16_t cid){ 306 char buffer[30]; 307 const int size = sizeof(buffer); 308 int offset = snprintf(buffer, size, "AT%s=", HFP_GENERIC_STATUS_INDICATOR); 309 offset += join(buffer+offset, size-offset, hfp_hf_indicators, hfp_hf_indicators_nr); 310 offset += snprintf(buffer+offset, size-offset, "\r"); 311 return send_str_over_rfcomm(cid, buffer); 312 } 313 314 static int hfp_hf_cmd_activate_status_update_for_all_ag_indicators(uint16_t cid, uint8_t activate){ 315 char buffer[20]; 316 snprintf(buffer, sizeof(buffer), "AT%s=3,0,0,%d\r", HFP_ENABLE_STATUS_UPDATE_FOR_AG_INDICATORS, activate); 317 return send_str_over_rfcomm(cid, buffer); 318 } 319 320 static int hfp_hf_initiate_outgoing_call_cmd(uint16_t cid){ 321 char buffer[40]; 322 snprintf(buffer, sizeof(buffer), "%s%s;\r", HFP_CALL_PHONE_NUMBER, hfp_hf_phone_number); 323 return send_str_over_rfcomm(cid, buffer); 324 } 325 326 static int hfp_hf_send_memory_dial_cmd(uint16_t cid, int memory_id){ 327 char buffer[40]; 328 snprintf(buffer, sizeof(buffer), "%s>%d;\r", HFP_CALL_PHONE_NUMBER, memory_id); 329 return send_str_over_rfcomm(cid, buffer); 330 } 331 332 static int hfp_hf_send_chld(uint16_t cid, unsigned int number){ 333 char buffer[40]; 334 snprintf(buffer, sizeof(buffer), "AT%s=%u\r", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, number); 335 return send_str_over_rfcomm(cid, buffer); 336 } 337 338 static int hfp_hf_send_dtmf(uint16_t cid, char code){ 339 char buffer[20]; 340 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", HFP_TRANSMIT_DTMF_CODES, code); 341 return send_str_over_rfcomm(cid, buffer); 342 } 343 344 static int hfp_hf_cmd_ata(uint16_t cid){ 345 return send_str_over_rfcomm(cid, (char *) "ATA\r"); 346 } 347 348 static int hfp_hf_cmd_exchange_supported_features(uint16_t cid){ 349 return hfp_hf_send_cmd_with_int(cid, HFP_SUPPORTED_FEATURES, hfp_hf_supported_features); 350 } 351 352 static int hfp_hf_cmd_retrieve_indicators(uint16_t cid){ 353 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "=?"); 354 } 355 356 static int hfp_hf_cmd_retrieve_indicators_status(uint16_t cid){ 357 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "?"); 358 } 359 360 static int hfp_hf_cmd_retrieve_can_hold_call(uint16_t cid){ 361 return hfp_hf_send_cmd_with_mark(cid, HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, "=?"); 362 } 363 364 static int hfp_hf_cmd_retrieve_supported_generic_status_indicators(uint16_t cid){ 365 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "=?"); 366 } 367 368 static int hfp_hf_cmd_list_initital_supported_generic_status_indicators(uint16_t cid){ 369 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "?"); 370 } 371 372 static int hfp_hf_cmd_query_operator_name_format(uint16_t cid){ 373 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "=3,0"); 374 } 375 376 static int hfp_hf_cmd_query_operator_name(uint16_t cid){ 377 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "?"); 378 } 379 380 static int hfp_hf_cmd_trigger_codec_connection_setup(uint16_t cid){ 381 return hfp_hf_send_cmd(cid, HFP_TRIGGER_CODEC_CONNECTION_SETUP); 382 } 383 384 static int hfp_hf_set_microphone_gain_cmd(uint16_t cid, int gain){ 385 return hfp_hf_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 386 } 387 388 static int hfp_hf_set_speaker_gain_cmd(uint16_t cid, int gain){ 389 return hfp_hf_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 390 } 391 392 static int hfp_hf_set_calling_line_notification_cmd(uint16_t cid, uint8_t activate){ 393 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CLIP, activate); 394 } 395 396 static int hfp_hf_set_voice_recognition_notification_cmd(uint16_t cid, uint8_t activate){ 397 return hfp_hf_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate); 398 } 399 400 static int hfp_hf_set_call_waiting_notification_cmd(uint16_t cid, uint8_t activate){ 401 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CALL_WAITING_NOTIFICATION, activate); 402 } 403 404 static int hfp_hf_cmd_confirm_codec(uint16_t cid, uint8_t codec){ 405 return hfp_hf_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 406 } 407 408 static int hfp_hf_cmd_enable_extended_audio_gateway_error_report(uint16_t cid, uint8_t enable){ 409 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR, enable); 410 } 411 412 static int hfp_hf_send_redial_last_number_cmd(uint16_t cid){ 413 return hfp_hf_send_cmd(cid, HFP_REDIAL_LAST_NUMBER); 414 } 415 416 static int hfp_hf_send_chup(uint16_t cid){ 417 return hfp_hf_send_cmd(cid, HFP_HANG_UP_CALL); 418 } 419 420 static int hfp_hf_send_binp(uint16_t cid){ 421 return hfp_hf_send_cmd_with_mark(cid, HFP_PHONE_NUMBER_FOR_VOICE_TAG, "=1"); 422 } 423 424 static int hfp_hf_send_clcc(uint16_t cid){ 425 return hfp_hf_send_cmd(cid, HFP_LIST_CURRENT_CALLS); 426 } 427 428 /* state machines */ 429 430 static int hfp_hf_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 431 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 432 if (hfp_connection->ok_pending) return 0; 433 int done = 1; 434 log_info("hfp_hf_run_for_context_service_level_connection state %d\n", hfp_connection->state); 435 switch (hfp_connection->state){ 436 case HFP_EXCHANGE_SUPPORTED_FEATURES: 437 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_hf_codecs, &hfp_hf_codecs_nr); 438 hfp_connection->state = HFP_W4_EXCHANGE_SUPPORTED_FEATURES; 439 hfp_hf_cmd_exchange_supported_features(hfp_connection->rfcomm_cid); 440 break; 441 case HFP_NOTIFY_ON_CODECS: 442 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 443 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 444 break; 445 case HFP_RETRIEVE_INDICATORS: 446 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 447 hfp_hf_cmd_retrieve_indicators(hfp_connection->rfcomm_cid); 448 break; 449 case HFP_RETRIEVE_INDICATORS_STATUS: 450 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 451 hfp_hf_cmd_retrieve_indicators_status(hfp_connection->rfcomm_cid); 452 break; 453 case HFP_ENABLE_INDICATORS_STATUS_UPDATE: 454 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 455 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, 1); 456 break; 457 case HFP_RETRIEVE_CAN_HOLD_CALL: 458 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 459 hfp_hf_cmd_retrieve_can_hold_call(hfp_connection->rfcomm_cid); 460 break; 461 case HFP_LIST_GENERIC_STATUS_INDICATORS: 462 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 463 hfp_hf_cmd_list_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 464 break; 465 case HFP_RETRIEVE_GENERIC_STATUS_INDICATORS: 466 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 467 hfp_hf_cmd_retrieve_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 468 break; 469 case HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 470 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 471 hfp_hf_cmd_list_initital_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 472 break; 473 default: 474 done = 0; 475 break; 476 } 477 return done; 478 } 479 480 481 static int hfp_hf_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 482 if (hfp_connection->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 483 if (hfp_connection->ok_pending){ 484 return 0; 485 } 486 int done = 0; 487 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 488 hfp_connection->ok_pending = 1; 489 done = 1; 490 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, hfp_connection->enable_status_update_for_ag_indicators); 491 return done; 492 }; 493 if (hfp_connection->change_status_update_for_individual_ag_indicators){ 494 hfp_connection->ok_pending = 1; 495 done = 1; 496 hfp_hf_cmd_activate_status_update_for_ag_indicator(hfp_connection->rfcomm_cid, 497 hfp_connection->ag_indicators_status_update_bitmap, 498 hfp_connection->ag_indicators_nr); 499 return done; 500 } 501 502 switch (hfp_connection->hf_query_operator_state){ 503 case HFP_HF_QUERY_OPERATOR_SET_FORMAT: 504 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK; 505 hfp_connection->ok_pending = 1; 506 hfp_hf_cmd_query_operator_name_format(hfp_connection->rfcomm_cid); 507 return 1; 508 case HFP_HF_QUERY_OPERATOR_SEND_QUERY: 509 hfp_connection->hf_query_operator_state = HPF_HF_QUERY_OPERATOR_W4_RESULT; 510 hfp_connection->ok_pending = 1; 511 hfp_hf_cmd_query_operator_name(hfp_connection->rfcomm_cid); 512 return 1; 513 default: 514 break; 515 } 516 517 if (hfp_connection->enable_extended_audio_gateway_error_report){ 518 hfp_connection->ok_pending = 1; 519 done = 1; 520 hfp_hf_cmd_enable_extended_audio_gateway_error_report(hfp_connection->rfcomm_cid, hfp_connection->enable_extended_audio_gateway_error_report); 521 return done; 522 } 523 524 return done; 525 } 526 527 static int hfp_hf_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 528 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 529 return 0; 530 } 531 int done = 0; 532 533 if (hfp_connection->ok_pending == 1){ 534 return 0; 535 } 536 // voice recognition activated from AG 537 if (hfp_connection->command == HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION){ 538 switch(hfp_connection->vra_state_requested){ 539 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 540 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 541 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 542 // ignore AG command, continue to wait for OK 543 return 0; 544 545 default: 546 if (hfp_connection->ag_vra_msg_length > 0){ 547 hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection); 548 hfp_connection->ag_vra_msg_length = 0; 549 break; 550 } 551 switch(hfp_connection->ag_vra_state){ 552 case HFP_VOICE_RECOGNITION_STATE_AG_READY: 553 switch (hfp_connection->ag_vra_status){ 554 case 0: 555 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 556 break; 557 case 1: 558 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 559 break; 560 case 2: 561 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 562 break; 563 default: 564 break; 565 } 566 break; 567 default: 568 // state messages from AG 569 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 570 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 571 break; 572 } 573 break; 574 } 575 hfp_connection->command = HFP_CMD_NONE; 576 } 577 578 579 switch (hfp_connection->vra_state_requested){ 580 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 581 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 0); 582 if (done != 0){ 583 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 584 hfp_connection->ok_pending = 1; 585 } 586 return 1; 587 588 589 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 590 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 1); 591 if (done != 0){ 592 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 593 hfp_connection->ok_pending = 1; 594 return 1; 595 } 596 break; 597 598 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 599 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 2); 600 if (done != 0){ 601 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 602 hfp_connection->ok_pending = 1; 603 return 1; 604 } 605 break; 606 607 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 608 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 609 hfp_connection->vra_state_requested = hfp_connection->vra_state; 610 hfp_connection->activate_voice_recognition = false; 611 if (hfp_connection->activate_voice_recognition){ 612 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 613 hfp_hf_activate_voice_recognition(hfp_connection->acl_handle); 614 } else { 615 hfp_emit_voice_recognition_disabled(hfp_connection, ERROR_CODE_SUCCESS); 616 } 617 break; 618 619 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 620 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 621 hfp_connection->vra_state_requested = hfp_connection->vra_state; 622 hfp_connection->activate_voice_recognition = false; 623 if (hfp_connection->deactivate_voice_recognition){ 624 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 625 } else { 626 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 627 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 628 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 629 } else { 630 // postpone VRA event to simplify application logic 631 hfp_connection->emit_vra_enabled_after_audio_established = true; 632 } 633 } 634 break; 635 636 637 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 638 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 639 hfp_connection->vra_state_requested = hfp_connection->vra_state; 640 hfp_connection->activate_voice_recognition = false; 641 if (hfp_connection->deactivate_voice_recognition){ 642 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 643 } else { 644 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 645 } 646 break; 647 648 default: 649 break; 650 } 651 return done; 652 } 653 654 655 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 656 if (hfp_connection->ok_pending) return 0; 657 658 if (hfp_connection->trigger_codec_exchange){ 659 hfp_connection->trigger_codec_exchange = 0; 660 661 hfp_connection->ok_pending = 1; 662 hfp_hf_cmd_trigger_codec_connection_setup(hfp_connection->rfcomm_cid); 663 return 1; 664 } 665 666 if (hfp_connection->hf_send_codec_confirm){ 667 hfp_connection->hf_send_codec_confirm = false; 668 669 hfp_connection->ok_pending = 1; 670 hfp_hf_cmd_confirm_codec(hfp_connection->rfcomm_cid, hfp_connection->codec_confirmed); 671 return 1; 672 } 673 674 if (hfp_connection->hf_send_supported_codecs){ 675 hfp_connection->hf_send_supported_codecs = false; 676 677 hfp_connection->ok_pending = 1; 678 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 679 return 1; 680 } 681 682 return 0; 683 } 684 685 static int hfp_hf_run_for_audio_connection(hfp_connection_t * hfp_connection){ 686 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 687 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 688 689 if (hfp_connection->release_audio_connection){ 690 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 691 hfp_connection->release_audio_connection = 0; 692 gap_disconnect(hfp_connection->sco_handle); 693 return 1; 694 } 695 696 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 697 698 // run codecs exchange 699 int done = codecs_exchange_state_machine(hfp_connection); 700 if (done) return 1; 701 702 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 703 if (hfp_connection->establish_audio_connection){ 704 hfp_connection->state = HFP_W4_SCO_CONNECTED; 705 hfp_connection->establish_audio_connection = 0; 706 hfp_setup_synchronous_connection(hfp_connection); 707 return 1; 708 } 709 return 0; 710 } 711 712 713 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 714 715 if (hfp_connection->ok_pending) return 0; 716 717 if (hfp_connection->hf_answer_incoming_call){ 718 hfp_hf_cmd_ata(hfp_connection->rfcomm_cid); 719 hfp_connection->hf_answer_incoming_call = 0; 720 return 1; 721 } 722 return 0; 723 } 724 725 static void hfp_hf_run_for_context(hfp_connection_t * hfp_connection){ 726 727 btstack_assert(hfp_connection != NULL); 728 btstack_assert(hfp_connection->local_role == HFP_ROLE_HF); 729 730 // during SDP query, RFCOMM CID is not set 731 if (hfp_connection->rfcomm_cid == 0) return; 732 733 // emit postponed VRA event 734 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->emit_vra_enabled_after_audio_established){ 735 hfp_connection->emit_vra_enabled_after_audio_established = false; 736 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 737 } 738 739 // assert command could be sent 740 if (hci_can_send_command_packet_now() == 0) return; 741 742 #ifdef ENABLE_CC256X_ASSISTED_HFP 743 // WBS Disassociate 744 if (hfp_connection->cc256x_send_wbs_disassociate){ 745 hfp_connection->cc256x_send_wbs_disassociate = false; 746 hci_send_cmd(&hci_ti_wbs_disassociate); 747 return; 748 } 749 // Write Codec Config 750 if (hfp_connection->cc256x_send_write_codec_config){ 751 hfp_connection->cc256x_send_write_codec_config = false; 752 hfp_cc256x_write_codec_config(hfp_connection); 753 return; 754 } 755 // WBS Associate 756 if (hfp_connection->cc256x_send_wbs_associate){ 757 hfp_connection->cc256x_send_wbs_associate = false; 758 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 759 return; 760 } 761 #endif 762 #ifdef ENABLE_BCM_PCM_WBS 763 // Enable WBS 764 if (hfp_connection->bcm_send_enable_wbs){ 765 hfp_connection->bcm_send_enable_wbs = false; 766 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 767 return; 768 } 769 // Write I2S/PCM params 770 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 771 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 772 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 773 return; 774 } 775 // Disable WBS 776 if (hfp_connection->bcm_send_disable_wbs){ 777 hfp_connection->bcm_send_disable_wbs = false; 778 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 779 return; 780 } 781 #endif 782 #ifdef ENABLE_RTK_PCM_WBS 783 if (hfp_connection->rtk_send_sco_config){ 784 hfp_connection->rtk_send_sco_config = false; 785 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){ 786 log_info("RTK SCO: 16k + mSBC"); 787 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x00, 0x00, 0x41); 788 } else { 789 log_info("RTK SCO: 16k + CVSD"); 790 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x0c, 0x00, 0x01); 791 } 792 return; 793 } 794 #endif 795 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 796 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 797 hfp_finalize_connection_context(hfp_connection); 798 return; 799 } 800 #endif 801 802 if (hfp_connection->accept_sco){ 803 bool incoming_eSCO = hfp_connection->accept_sco == 2; 804 hfp_connection->accept_sco = 0; 805 // notify about codec selection if not done already 806 if (hfp_connection->negotiated_codec == 0){ 807 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 808 } 809 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 810 return; 811 } 812 813 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 814 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 815 return; 816 } 817 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection); 818 if (!done){ 819 done = hfp_hf_run_for_context_service_level_connection_queries(hfp_connection); 820 } 821 if (!done){ 822 done = hfp_hf_run_for_audio_connection(hfp_connection); 823 } 824 if (!done){ 825 done = hfp_hf_voice_recognition_state_machine(hfp_connection); 826 } 827 if (!done){ 828 done = call_setup_state_machine(hfp_connection); 829 } 830 831 // don't send a new command while ok still pending or SLC is not established 832 if (hfp_connection->ok_pending || (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED)){ 833 return; 834 } 835 836 if (hfp_connection->send_microphone_gain){ 837 hfp_connection->send_microphone_gain = 0; 838 hfp_connection->ok_pending = 1; 839 hfp_hf_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 840 return; 841 } 842 843 if (hfp_connection->send_speaker_gain){ 844 hfp_connection->send_speaker_gain = 0; 845 hfp_connection->ok_pending = 1; 846 hfp_hf_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 847 return; 848 } 849 850 if (hfp_connection->hf_deactivate_calling_line_notification){ 851 hfp_connection->hf_deactivate_calling_line_notification = 0; 852 hfp_connection->ok_pending = 1; 853 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 0); 854 return; 855 } 856 857 if (hfp_connection->hf_activate_calling_line_notification){ 858 hfp_connection->hf_activate_calling_line_notification = 0; 859 hfp_connection->ok_pending = 1; 860 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 1); 861 return; 862 } 863 864 if (hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction){ 865 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 0; 866 hfp_connection->response_pending_for_command = HFP_CMD_TURN_OFF_EC_AND_NR; 867 hfp_connection->ok_pending = 1; 868 hfp_hf_send_cmd_with_int(hfp_connection->rfcomm_cid, HFP_TURN_OFF_EC_AND_NR, 0); 869 return; 870 } 871 872 if (hfp_connection->hf_deactivate_call_waiting_notification){ 873 hfp_connection->hf_deactivate_call_waiting_notification = 0; 874 hfp_connection->ok_pending = 1; 875 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 0); 876 return; 877 } 878 879 if (hfp_connection->hf_activate_call_waiting_notification){ 880 hfp_connection->hf_activate_call_waiting_notification = 0; 881 hfp_connection->ok_pending = 1; 882 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 1); 883 return; 884 } 885 886 if (hfp_connection->hf_initiate_outgoing_call){ 887 hfp_connection->hf_initiate_outgoing_call = 0; 888 hfp_connection->ok_pending = 1; 889 hfp_hf_initiate_outgoing_call_cmd(hfp_connection->rfcomm_cid); 890 return; 891 } 892 893 if (hfp_connection->hf_initiate_memory_dialing){ 894 hfp_connection->hf_initiate_memory_dialing = 0; 895 hfp_connection->ok_pending = 1; 896 hfp_hf_send_memory_dial_cmd(hfp_connection->rfcomm_cid, hfp_connection->memory_id); 897 return; 898 } 899 900 if (hfp_connection->hf_initiate_redial_last_number){ 901 hfp_connection->hf_initiate_redial_last_number = 0; 902 hfp_connection->ok_pending = 1; 903 hfp_hf_send_redial_last_number_cmd(hfp_connection->rfcomm_cid); 904 return; 905 } 906 907 if (hfp_connection->hf_send_chup){ 908 hfp_connection->hf_send_chup = 0; 909 hfp_connection->ok_pending = 1; 910 hfp_hf_send_chup(hfp_connection->rfcomm_cid); 911 return; 912 } 913 914 if (hfp_connection->hf_send_chld_0){ 915 hfp_connection->hf_send_chld_0 = 0; 916 hfp_connection->ok_pending = 1; 917 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 0); 918 return; 919 } 920 921 if (hfp_connection->hf_send_chld_1){ 922 hfp_connection->hf_send_chld_1 = 0; 923 hfp_connection->ok_pending = 1; 924 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 1); 925 return; 926 } 927 928 if (hfp_connection->hf_send_chld_2){ 929 hfp_connection->hf_send_chld_2 = 0; 930 hfp_connection->ok_pending = 1; 931 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 2); 932 return; 933 } 934 935 if (hfp_connection->hf_send_chld_3){ 936 hfp_connection->hf_send_chld_3 = 0; 937 hfp_connection->ok_pending = 1; 938 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 3); 939 return; 940 } 941 942 if (hfp_connection->hf_send_chld_4){ 943 hfp_connection->hf_send_chld_4 = 0; 944 hfp_connection->ok_pending = 1; 945 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 4); 946 return; 947 } 948 949 if (hfp_connection->hf_send_chld_x){ 950 hfp_connection->hf_send_chld_x = 0; 951 hfp_connection->ok_pending = 1; 952 hfp_hf_send_chld(hfp_connection->rfcomm_cid, hfp_connection->hf_send_chld_x_index); 953 return; 954 } 955 956 if (hfp_connection->hf_send_dtmf_code){ 957 char code = hfp_connection->hf_send_dtmf_code; 958 hfp_connection->hf_send_dtmf_code = 0; 959 hfp_connection->ok_pending = 1; 960 hfp_hf_send_dtmf(hfp_connection->rfcomm_cid, code); 961 return; 962 } 963 964 if (hfp_connection->hf_send_binp){ 965 hfp_connection->hf_send_binp = 0; 966 hfp_connection->ok_pending = 1; 967 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 968 return; 969 } 970 971 if (hfp_connection->hf_send_clcc){ 972 hfp_connection->hf_send_clcc = 0; 973 hfp_connection->ok_pending = 1; 974 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 975 return; 976 } 977 978 if (hfp_connection->hf_send_rrh){ 979 hfp_connection->hf_send_rrh = 0; 980 char buffer[20]; 981 switch (hfp_connection->hf_send_rrh_command){ 982 case '?': 983 snprintf(buffer, sizeof(buffer), "AT%s?\r", 984 HFP_RESPONSE_AND_HOLD); 985 buffer[sizeof(buffer) - 1] = 0; 986 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 987 return; 988 case '0': 989 case '1': 990 case '2': 991 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", 992 HFP_RESPONSE_AND_HOLD, 993 hfp_connection->hf_send_rrh_command); 994 buffer[sizeof(buffer) - 1] = 0; 995 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 996 return; 997 default: 998 break; 999 } 1000 return; 1001 } 1002 1003 if (hfp_connection->hf_send_cnum){ 1004 hfp_connection->hf_send_cnum = 0; 1005 char buffer[20]; 1006 snprintf(buffer, sizeof(buffer), "AT%s\r", 1007 HFP_SUBSCRIBER_NUMBER_INFORMATION); 1008 buffer[sizeof(buffer) - 1] = 0; 1009 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1010 return; 1011 } 1012 1013 // update HF indicators 1014 if (hfp_connection->generic_status_update_bitmap){ 1015 int i; 1016 for (i=0; i < hfp_hf_indicators_nr; i++){ 1017 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 1018 if (hfp_connection->generic_status_indicators[i].state){ 1019 hfp_connection->ok_pending = 1; 1020 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 1021 char buffer[30]; 1022 snprintf(buffer, sizeof(buffer), "AT%s=%u,%u\r", 1023 HFP_TRANSFER_HF_INDICATOR_STATUS, 1024 hfp_hf_indicators[i], 1025 (unsigned int)hfp_hf_indicators_value[i]); 1026 buffer[sizeof(buffer) - 1] = 0; 1027 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1028 } else { 1029 log_info("Not sending HF indicator %u as it is disabled", hfp_hf_indicators[i]); 1030 } 1031 return; 1032 } 1033 } 1034 } 1035 1036 if (done) return; 1037 // deal with disconnect 1038 switch (hfp_connection->state){ 1039 case HFP_W2_DISCONNECT_RFCOMM: 1040 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1041 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1042 break; 1043 1044 default: 1045 break; 1046 } 1047 } 1048 1049 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 1050 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 1051 1052 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 1053 1054 uint8_t i; 1055 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1056 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1057 } 1058 1059 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1060 hfp_connection->ag_indicators[i].status_changed = 0; 1061 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1062 } 1063 1064 // restore volume settings 1065 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 1066 hfp_connection->send_speaker_gain = 1; 1067 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 1068 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 1069 hfp_connection->send_microphone_gain = 1; 1070 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 1071 // enable all indicators 1072 for (i=0; i < hfp_hf_indicators_nr; i++){ 1073 hfp_connection->generic_status_indicators[i].uuid = hfp_hf_indicators[i]; 1074 hfp_connection->generic_status_indicators[i].state = 1; 1075 } 1076 } 1077 1078 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 1079 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_hf_codecs_nr, hfp_hf_codecs)){ 1080 // Codec supported, confirm 1081 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1082 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1083 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 1084 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 1085 1086 hfp_connection->hf_send_codec_confirm = true; 1087 } else { 1088 // Codec not supported, send supported codecs 1089 hfp_connection->codec_confirmed = 0; 1090 hfp_connection->suggested_codec = 0; 1091 hfp_connection->negotiated_codec = 0; 1092 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1093 1094 hfp_connection->hf_send_supported_codecs = true; 1095 } 1096 } 1097 1098 static bool hfp_hf_switch_on_ok_pending(hfp_connection_t *hfp_connection, uint8_t status){ 1099 bool event_emited = true; 1100 1101 switch (hfp_connection->response_pending_for_command){ 1102 case HFP_CMD_TURN_OFF_EC_AND_NR: 1103 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 1104 break; 1105 default: 1106 event_emited = false; 1107 1108 switch (hfp_connection->state){ 1109 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 1110 if (has_codec_negotiation_feature(hfp_connection)){ 1111 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 1112 break; 1113 } 1114 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1115 break; 1116 1117 case HFP_W4_NOTIFY_ON_CODECS: 1118 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1119 break; 1120 1121 case HFP_W4_RETRIEVE_INDICATORS: 1122 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 1123 break; 1124 1125 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 1126 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 1127 break; 1128 1129 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 1130 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 1131 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 1132 break; 1133 } 1134 if (has_hf_indicators_feature(hfp_connection)){ 1135 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1136 break; 1137 } 1138 hfp_ag_slc_established(hfp_connection); 1139 break; 1140 1141 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 1142 if (has_hf_indicators_feature(hfp_connection)){ 1143 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1144 break; 1145 } 1146 hfp_ag_slc_established(hfp_connection); 1147 break; 1148 1149 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 1150 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 1151 break; 1152 1153 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 1154 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 1155 break; 1156 1157 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 1158 hfp_ag_slc_established(hfp_connection); 1159 break; 1160 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1161 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 1162 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 1163 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1164 break; 1165 } 1166 1167 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 1168 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 1169 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1170 break; 1171 } 1172 1173 switch (hfp_connection->hf_query_operator_state){ 1174 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 1175 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1176 break; 1177 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 1178 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 1179 hfp_emit_network_operator_event(hfp_connection); 1180 break; 1181 default: 1182 break; 1183 } 1184 1185 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1186 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1187 break; 1188 } 1189 1190 switch (hfp_connection->codecs_state){ 1191 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1192 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1193 break; 1194 case HFP_CODECS_HF_CONFIRMED_CODEC: 1195 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1196 break; 1197 default: 1198 break; 1199 } 1200 hfp_hf_voice_recognition_state_machine(hfp_connection); 1201 break; 1202 case HFP_AUDIO_CONNECTION_ESTABLISHED: 1203 hfp_hf_voice_recognition_state_machine(hfp_connection); 1204 break; 1205 default: 1206 break; 1207 } 1208 break; 1209 } 1210 1211 // done 1212 hfp_connection->response_pending_for_command = HFP_CMD_NONE; 1213 hfp_connection->ok_pending = 0; 1214 hfp_connection->command = HFP_CMD_NONE; 1215 return event_emited; 1216 } 1217 1218 static bool hfp_is_ringing(hfp_callsetup_status_t callsetup_status){ 1219 switch (callsetup_status){ 1220 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1221 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1222 return true; 1223 default: 1224 return false; 1225 } 1226 } 1227 1228 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1229 uint16_t i; 1230 1231 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1232 if (hfp_connection->ag_indicators[i].status_changed) { 1233 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1234 hfp_callsetup_status_t new_hf_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1235 bool ringing_old = hfp_is_ringing(hfp_hf_callsetup_status); 1236 bool ringing_new = hfp_is_ringing(new_hf_callsetup_status); 1237 if (ringing_old != ringing_new){ 1238 if (ringing_new){ 1239 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGING); 1240 } else { 1241 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGING); 1242 } 1243 } 1244 hfp_hf_callsetup_status = new_hf_callsetup_status; 1245 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1246 hfp_hf_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1247 // avoid set but not used warning 1248 (void) hfp_hf_callheld_status; 1249 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1250 hfp_call_status_t new_hf_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1251 if (hfp_hf_call_status != new_hf_call_status){ 1252 if (new_hf_call_status == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 1253 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1254 } else { 1255 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1256 } 1257 } 1258 hfp_hf_call_status = new_hf_call_status; 1259 } 1260 hfp_connection->ag_indicators[i].status_changed = 0; 1261 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1262 break; 1263 } 1264 } 1265 } 1266 1267 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1268 int value; 1269 int i; 1270 bool event_emited; 1271 1272 switch (hfp_connection->command){ 1273 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1274 hfp_connection->command = HFP_CMD_NONE; 1275 hfp_hf_emit_subscriber_information(hfp_connection, 0); 1276 break; 1277 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1278 hfp_connection->command = HFP_CMD_NONE; 1279 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1280 break; 1281 case HFP_CMD_LIST_CURRENT_CALLS: 1282 hfp_connection->command = HFP_CMD_NONE; 1283 hfp_hf_emit_enhanced_call_status(hfp_connection); 1284 break; 1285 case HFP_CMD_SET_SPEAKER_GAIN: 1286 hfp_connection->command = HFP_CMD_NONE; 1287 value = btstack_atoi((char*)hfp_connection->line_buffer); 1288 hfp_hf_speaker_gain = value; 1289 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1290 break; 1291 case HFP_CMD_SET_MICROPHONE_GAIN: 1292 hfp_connection->command = HFP_CMD_NONE; 1293 value = btstack_atoi((char*)hfp_connection->line_buffer); 1294 hfp_hf_microphone_gain = value; 1295 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1296 break; 1297 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1298 hfp_connection->command = HFP_CMD_NONE; 1299 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1300 break; 1301 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1302 hfp_connection->command = HFP_CMD_NONE; 1303 hfp_hf_emit_type_and_number(hfp_connection, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION); 1304 break; 1305 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1306 hfp_connection->command = HFP_CMD_NONE; 1307 hfp_hf_emit_type_and_number(hfp_connection, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION); 1308 break; 1309 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1310 hfp_connection->command = HFP_CMD_NONE; 1311 hfp_connection->ok_pending = 0; 1312 hfp_connection->extended_audio_gateway_error = 0; 1313 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1314 break; 1315 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 1316 break; 1317 case HFP_CMD_ERROR: 1318 switch (hfp_connection->state){ 1319 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1320 switch (hfp_connection->codecs_state){ 1321 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1322 hfp_reset_context_flags(hfp_connection); 1323 hfp_emit_sco_event(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 0, hfp_connection->remote_addr, hfp_connection->negotiated_codec); 1324 return; 1325 default: 1326 break; 1327 } 1328 break; 1329 default: 1330 break; 1331 } 1332 1333 // handle error response for voice activation (HF initiated) 1334 switch(hfp_connection->vra_state_requested){ 1335 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1336 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1337 break; 1338 default: 1339 if (hfp_connection->vra_state_requested == hfp_connection->vra_state){ 1340 break; 1341 } 1342 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1343 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1344 hfp_reset_context_flags(hfp_connection); 1345 return; 1346 } 1347 event_emited = hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1348 if (!event_emited){ 1349 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 1); 1350 } 1351 hfp_reset_context_flags(hfp_connection); 1352 break; 1353 1354 case HFP_CMD_OK: 1355 hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_SUCCESS); 1356 break; 1357 case HFP_CMD_RING: 1358 hfp_connection->command = HFP_CMD_NONE; 1359 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1360 break; 1361 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1362 hfp_connection->command = HFP_CMD_NONE; 1363 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1364 break; 1365 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1366 hfp_connection->command = HFP_CMD_NONE; 1367 // report status after SLC established 1368 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 1369 break; 1370 } 1371 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1372 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1373 } 1374 break; 1375 case HFP_CMD_AG_SUGGESTED_CODEC: 1376 hfp_connection->command = HFP_CMD_NONE; 1377 hfp_hf_handle_suggested_codec(hfp_connection); 1378 break; 1379 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1380 hfp_emit_event(hfp_connection, HFP_SUBEVENT_IN_BAND_RING_TONE, get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE)); 1381 default: 1382 break; 1383 } 1384 } 1385 1386 static int hfp_parser_is_end_of_line(uint8_t byte){ 1387 return (byte == '\n') || (byte == '\r'); 1388 } 1389 1390 static void hfp_hf_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 1391 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1392 if (size < 1) return; 1393 1394 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1395 #ifdef ENABLE_HFP_AT_MESSAGES 1396 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1397 #endif 1398 1399 // process messages byte-wise 1400 uint8_t pos; 1401 for (pos = 0; pos < size; pos++){ 1402 hfp_parse(hfp_connection, packet[pos], 1); 1403 // parse until end of line "\r" or "\n" 1404 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1405 hfp_hf_handle_rfcomm_command(hfp_connection); 1406 } 1407 } 1408 1409 static void hfp_hf_run(void){ 1410 btstack_linked_list_iterator_t it; 1411 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1412 while (btstack_linked_list_iterator_has_next(&it)){ 1413 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1414 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1415 hfp_hf_run_for_context(hfp_connection); 1416 } 1417 } 1418 1419 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1420 hfp_connection_t * hfp_connection; 1421 switch (packet_type){ 1422 case RFCOMM_DATA_PACKET: 1423 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1424 if (!hfp_connection) return; 1425 hfp_hf_handle_rfcomm_data(hfp_connection, packet, size); 1426 hfp_hf_run_for_context(hfp_connection); 1427 return; 1428 case HCI_EVENT_PACKET: 1429 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1430 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1431 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1432 return; 1433 } 1434 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1435 break; 1436 default: 1437 break; 1438 } 1439 hfp_hf_run(); 1440 } 1441 1442 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1443 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1444 hfp_hf_run(); 1445 } 1446 1447 static void hfp_hf_set_defaults(void){ 1448 hfp_hf_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1449 hfp_hf_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1450 hfp_hf_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1451 hfp_hf_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1452 hfp_hf_codecs_nr = 0; 1453 hfp_hf_speaker_gain = 9; 1454 hfp_hf_microphone_gain = 9; 1455 hfp_hf_indicators_nr = 0; 1456 } 1457 1458 uint8_t hfp_hf_init(uint16_t rfcomm_channel_nr){ 1459 uint8_t status = rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1460 if (status != ERROR_CODE_SUCCESS){ 1461 return status; 1462 } 1463 1464 hfp_init(); 1465 hfp_hf_set_defaults(); 1466 1467 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1468 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1469 1470 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1471 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1472 return ERROR_CODE_SUCCESS; 1473 } 1474 1475 void hfp_hf_deinit(void){ 1476 hfp_deinit(); 1477 hfp_hf_set_defaults(); 1478 1479 hfp_hf_callback = NULL; 1480 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1481 (void) memset(hfp_hf_phone_number, 0, sizeof(hfp_hf_phone_number)); 1482 } 1483 1484 void hfp_hf_init_codecs(int codecs_nr, const uint8_t * codecs){ 1485 btstack_assert(codecs_nr < HFP_MAX_NUM_CODECS); 1486 1487 hfp_hf_codecs_nr = codecs_nr; 1488 int i; 1489 for (i=0; i<codecs_nr; i++){ 1490 hfp_hf_codecs[i] = codecs[i]; 1491 } 1492 } 1493 1494 void hfp_hf_init_supported_features(uint32_t supported_features){ 1495 hfp_hf_supported_features = supported_features; 1496 } 1497 1498 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1499 btstack_assert(hfp_hf_indicators_nr < HFP_MAX_NUM_INDICATORS); 1500 1501 hfp_hf_indicators_nr = indicators_nr; 1502 int i; 1503 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 1504 hfp_hf_indicators[i] = indicators[i]; 1505 } 1506 } 1507 1508 uint8_t hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1509 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1510 } 1511 1512 uint8_t hfp_hf_release_service_level_connection(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 hfp_trigger_release_service_level_connection(hfp_connection); 1518 hfp_hf_run_for_context(hfp_connection); 1519 return ERROR_CODE_SUCCESS; 1520 } 1521 1522 static uint8_t hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1523 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1524 if (!hfp_connection) { 1525 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1526 } 1527 hfp_connection->enable_status_update_for_ag_indicators = enable; 1528 hfp_hf_run_for_context(hfp_connection); 1529 return ERROR_CODE_SUCCESS; 1530 } 1531 1532 uint8_t hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1533 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1534 } 1535 1536 uint8_t hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1537 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1538 } 1539 1540 // TODO: returned ERROR - wrong format 1541 uint8_t hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1542 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1543 if (!hfp_connection) { 1544 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1545 } 1546 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1547 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1548 hfp_hf_run_for_context(hfp_connection); 1549 return ERROR_CODE_SUCCESS; 1550 } 1551 1552 uint8_t hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1553 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1554 if (!hfp_connection) { 1555 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1556 } 1557 1558 switch (hfp_connection->hf_query_operator_state){ 1559 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1560 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1561 break; 1562 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1563 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1564 break; 1565 default: 1566 return ERROR_CODE_COMMAND_DISALLOWED; 1567 } 1568 hfp_hf_run_for_context(hfp_connection); 1569 return ERROR_CODE_SUCCESS; 1570 } 1571 1572 static uint8_t hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1573 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1574 if (!hfp_connection) { 1575 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1576 } 1577 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1578 hfp_hf_run_for_context(hfp_connection); 1579 return ERROR_CODE_SUCCESS; 1580 } 1581 1582 1583 uint8_t hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1584 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1585 } 1586 1587 uint8_t hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1588 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1589 } 1590 1591 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1592 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_hf_supported_features & (1 << HFP_HFSF_ESCO_S4)); 1593 } 1594 1595 uint8_t hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1596 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1597 if (!hfp_connection) { 1598 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1599 } 1600 1601 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1602 return ERROR_CODE_COMMAND_DISALLOWED; 1603 } 1604 1605 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 1606 return ERROR_CODE_COMMAND_DISALLOWED; 1607 } 1608 if (has_codec_negotiation_feature(hfp_connection)) { 1609 switch (hfp_connection->codecs_state) { 1610 case HFP_CODECS_W4_AG_COMMON_CODEC: 1611 break; 1612 case HFP_CODECS_EXCHANGED: 1613 hfp_connection->trigger_codec_exchange = 1; 1614 break; 1615 default: 1616 hfp_connection->codec_confirmed = 0; 1617 hfp_connection->suggested_codec = 0; 1618 hfp_connection->negotiated_codec = 0; 1619 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1620 hfp_connection->trigger_codec_exchange = 1; 1621 break; 1622 } 1623 } else { 1624 log_info("no codec negotiation feature, use CVSD"); 1625 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1626 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1627 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1628 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1629 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1630 hfp_connection->establish_audio_connection = 1; 1631 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1632 } 1633 1634 hfp_hf_run_for_context(hfp_connection); 1635 return ERROR_CODE_SUCCESS; 1636 } 1637 1638 uint8_t hfp_hf_release_audio_connection(hci_con_handle_t acl_handle){ 1639 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1640 if (!hfp_connection) { 1641 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1642 } 1643 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 1644 return ERROR_CODE_COMMAND_DISALLOWED; 1645 } 1646 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 1647 if (status == ERROR_CODE_SUCCESS){ 1648 hfp_hf_run_for_context(hfp_connection); 1649 } 1650 return ERROR_CODE_SUCCESS; 1651 } 1652 1653 uint8_t hfp_hf_answer_incoming_call(hci_con_handle_t acl_handle){ 1654 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1655 if (!hfp_connection) { 1656 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1657 } 1658 1659 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1660 hfp_connection->hf_answer_incoming_call = 1; 1661 hfp_hf_run_for_context(hfp_connection); 1662 } else { 1663 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_hf_callsetup_status); 1664 return ERROR_CODE_COMMAND_DISALLOWED; 1665 } 1666 return ERROR_CODE_SUCCESS; 1667 } 1668 1669 uint8_t hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1670 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1671 if (!hfp_connection) { 1672 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1673 } 1674 hfp_connection->hf_send_chup = 1; 1675 hfp_hf_run_for_context(hfp_connection); 1676 return ERROR_CODE_SUCCESS; 1677 } 1678 1679 uint8_t hfp_hf_reject_incoming_call(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_connection->hf_send_chup = 1; 1687 hfp_hf_run_for_context(hfp_connection); 1688 } 1689 return ERROR_CODE_SUCCESS; 1690 } 1691 1692 uint8_t hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1693 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1694 if (!hfp_connection) { 1695 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1696 } 1697 1698 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1699 hfp_connection->hf_send_chld_0 = 1; 1700 hfp_hf_run_for_context(hfp_connection); 1701 } 1702 return ERROR_CODE_SUCCESS; 1703 } 1704 1705 uint8_t hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1706 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1707 if (!hfp_connection) { 1708 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1709 } 1710 1711 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1712 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1713 hfp_connection->hf_send_chld_1 = 1; 1714 hfp_hf_run_for_context(hfp_connection); 1715 } 1716 return ERROR_CODE_SUCCESS; 1717 } 1718 1719 uint8_t hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1720 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1721 if (!hfp_connection) { 1722 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1723 } 1724 1725 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1726 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1727 hfp_connection->hf_send_chld_2 = 1; 1728 hfp_hf_run_for_context(hfp_connection); 1729 } 1730 return ERROR_CODE_SUCCESS; 1731 } 1732 1733 uint8_t hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1734 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1735 if (!hfp_connection) { 1736 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1737 } 1738 1739 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1740 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1741 hfp_connection->hf_send_chld_3 = 1; 1742 hfp_hf_run_for_context(hfp_connection); 1743 } 1744 return ERROR_CODE_SUCCESS; 1745 } 1746 1747 uint8_t hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1748 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1749 if (!hfp_connection) { 1750 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1751 } 1752 1753 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1754 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1755 hfp_connection->hf_send_chld_4 = 1; 1756 hfp_hf_run_for_context(hfp_connection); 1757 } 1758 return ERROR_CODE_SUCCESS; 1759 } 1760 1761 uint8_t hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1762 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1763 if (!hfp_connection) { 1764 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1765 } 1766 1767 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1768 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1769 hfp_connection->hf_send_chld_x = 1; 1770 hfp_connection->hf_send_chld_x_index = 10 + index; 1771 hfp_hf_run_for_context(hfp_connection); 1772 } 1773 return ERROR_CODE_SUCCESS; 1774 } 1775 1776 uint8_t hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 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 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1783 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1784 hfp_connection->hf_send_chld_x = 1; 1785 hfp_connection->hf_send_chld_x_index = 20 + index; 1786 hfp_hf_run_for_context(hfp_connection); 1787 } 1788 return ERROR_CODE_SUCCESS; 1789 } 1790 1791 uint8_t hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 1792 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1793 if (!hfp_connection) { 1794 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1795 } 1796 1797 hfp_connection->hf_initiate_outgoing_call = 1; 1798 snprintf(hfp_hf_phone_number, sizeof(hfp_hf_phone_number), "%s", number); 1799 hfp_hf_run_for_context(hfp_connection); 1800 return ERROR_CODE_SUCCESS; 1801 } 1802 1803 uint8_t hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 1804 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1805 if (!hfp_connection) { 1806 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1807 } 1808 1809 hfp_connection->hf_initiate_memory_dialing = 1; 1810 hfp_connection->memory_id = memory_id; 1811 1812 hfp_hf_run_for_context(hfp_connection); 1813 return ERROR_CODE_SUCCESS; 1814 } 1815 1816 uint8_t hfp_hf_redial_last_number(hci_con_handle_t acl_handle){ 1817 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1818 if (!hfp_connection) { 1819 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1820 } 1821 1822 hfp_connection->hf_initiate_redial_last_number = 1; 1823 hfp_hf_run_for_context(hfp_connection); 1824 return ERROR_CODE_SUCCESS; 1825 } 1826 1827 uint8_t hfp_hf_activate_call_waiting_notification(hci_con_handle_t acl_handle){ 1828 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1829 if (!hfp_connection) { 1830 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1831 } 1832 1833 hfp_connection->hf_activate_call_waiting_notification = 1; 1834 hfp_hf_run_for_context(hfp_connection); 1835 return ERROR_CODE_SUCCESS; 1836 } 1837 1838 1839 uint8_t hfp_hf_deactivate_call_waiting_notification(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 1845 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1846 hfp_hf_run_for_context(hfp_connection); 1847 return ERROR_CODE_SUCCESS; 1848 } 1849 1850 1851 uint8_t hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1852 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1853 if (!hfp_connection) { 1854 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1855 } 1856 1857 hfp_connection->hf_activate_calling_line_notification = 1; 1858 hfp_hf_run_for_context(hfp_connection); 1859 return ERROR_CODE_SUCCESS; 1860 } 1861 1862 uint8_t hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1863 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1864 if (!hfp_connection) { 1865 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1866 } 1867 1868 hfp_connection->hf_deactivate_calling_line_notification = 1; 1869 hfp_hf_run_for_context(hfp_connection); 1870 return ERROR_CODE_SUCCESS; 1871 } 1872 1873 static bool hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection_t * hfp_connection){ 1874 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_EC_NR_FUNCTION); 1875 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_EC_NR_FUNCTION); 1876 return hf && ag; 1877 } 1878 1879 uint8_t hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1880 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1881 if (!hfp_connection) { 1882 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1883 } 1884 if (!hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection)){ 1885 return ERROR_CODE_COMMAND_DISALLOWED; 1886 } 1887 1888 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1889 hfp_hf_run_for_context(hfp_connection); 1890 return ERROR_CODE_SUCCESS; 1891 } 1892 1893 uint8_t hfp_hf_activate_voice_recognition(hci_con_handle_t acl_handle){ 1894 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1895 if (!hfp_connection) { 1896 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1897 } 1898 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1899 return ERROR_CODE_COMMAND_DISALLOWED; 1900 } 1901 1902 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1903 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1904 if (!enhanced_vra_supported && !legacy_vra_supported){ 1905 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1906 } 1907 1908 switch (hfp_connection->vra_state){ 1909 case HFP_VRA_VOICE_RECOGNITION_OFF: 1910 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1911 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 1912 hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 1913 break; 1914 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1915 hfp_connection->activate_voice_recognition = true; 1916 break; 1917 default: 1918 return ERROR_CODE_COMMAND_DISALLOWED; 1919 } 1920 1921 hfp_hf_run_for_context(hfp_connection); 1922 return ERROR_CODE_SUCCESS; 1923 } 1924 1925 uint8_t hfp_hf_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 1926 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1927 if (!hfp_connection) { 1928 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1929 } 1930 1931 if (hfp_connection->emit_vra_enabled_after_audio_established){ 1932 return ERROR_CODE_COMMAND_DISALLOWED; 1933 } 1934 1935 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 1936 return ERROR_CODE_COMMAND_DISALLOWED; 1937 } 1938 1939 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1940 if (!enhanced_vra_supported){ 1941 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1942 } 1943 1944 switch (hfp_connection->vra_state){ 1945 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 1946 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1947 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 1948 break; 1949 default: 1950 return ERROR_CODE_COMMAND_DISALLOWED; 1951 } 1952 1953 hfp_hf_run_for_context(hfp_connection); 1954 return ERROR_CODE_SUCCESS; 1955 } 1956 1957 1958 uint8_t hfp_hf_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 1959 // return deactivate_voice_recognition(acl_handle, false); 1960 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1961 if (!hfp_connection) { 1962 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1963 } 1964 1965 if (hfp_connection->emit_vra_enabled_after_audio_established){ 1966 return ERROR_CODE_COMMAND_DISALLOWED; 1967 } 1968 1969 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 1970 hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1971 return ERROR_CODE_COMMAND_DISALLOWED; 1972 } 1973 1974 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1975 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1976 if (!enhanced_vra_supported && !legacy_vra_supported){ 1977 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1978 } 1979 1980 switch (hfp_connection->vra_state){ 1981 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 1982 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 1983 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1984 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1985 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 1986 break; 1987 1988 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 1989 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1990 hfp_connection->deactivate_voice_recognition = true; 1991 break; 1992 1993 case HFP_VRA_VOICE_RECOGNITION_OFF: 1994 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1995 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1996 default: 1997 return ERROR_CODE_COMMAND_DISALLOWED; 1998 } 1999 2000 hfp_hf_run_for_context(hfp_connection); 2001 return ERROR_CODE_SUCCESS; 2002 } 2003 2004 uint8_t hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2005 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2006 if (!hfp_connection) { 2007 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2008 } 2009 2010 if (hfp_connection->microphone_gain == gain) { 2011 return ERROR_CODE_SUCCESS; 2012 } 2013 2014 if ((gain < 0) || (gain > 15)){ 2015 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2016 return ERROR_CODE_COMMAND_DISALLOWED; 2017 } 2018 2019 hfp_connection->microphone_gain = gain; 2020 hfp_connection->send_microphone_gain = 1; 2021 hfp_hf_run_for_context(hfp_connection); 2022 return ERROR_CODE_SUCCESS; 2023 } 2024 2025 uint8_t hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2026 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2027 if (!hfp_connection) { 2028 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2029 } 2030 2031 if (hfp_connection->speaker_gain == gain){ 2032 return ERROR_CODE_SUCCESS; 2033 } 2034 2035 if ((gain < 0) || (gain > 15)){ 2036 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2037 return ERROR_CODE_COMMAND_DISALLOWED; 2038 } 2039 2040 hfp_connection->speaker_gain = gain; 2041 hfp_connection->send_speaker_gain = 1; 2042 hfp_hf_run_for_context(hfp_connection); 2043 return ERROR_CODE_SUCCESS; 2044 } 2045 2046 uint8_t hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 2047 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2048 if (!hfp_connection) { 2049 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2050 } 2051 hfp_connection->hf_send_dtmf_code = code; 2052 hfp_hf_run_for_context(hfp_connection); 2053 return ERROR_CODE_SUCCESS; 2054 } 2055 2056 uint8_t hfp_hf_request_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2057 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2058 if (!hfp_connection) { 2059 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2060 } 2061 hfp_connection->hf_send_binp = 1; 2062 hfp_hf_run_for_context(hfp_connection); 2063 return ERROR_CODE_SUCCESS; 2064 } 2065 2066 uint8_t hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 2067 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2068 if (!hfp_connection) { 2069 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2070 } 2071 hfp_connection->hf_send_clcc = 1; 2072 hfp_hf_run_for_context(hfp_connection); 2073 return ERROR_CODE_SUCCESS; 2074 } 2075 2076 2077 uint8_t hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 2078 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2079 if (!hfp_connection) { 2080 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2081 } 2082 hfp_connection->hf_send_rrh = 1; 2083 hfp_connection->hf_send_rrh_command = '?'; 2084 hfp_hf_run_for_context(hfp_connection); 2085 return ERROR_CODE_SUCCESS; 2086 } 2087 2088 uint8_t hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 2089 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2090 if (!hfp_connection) { 2091 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2092 } 2093 hfp_connection->hf_send_rrh = 1; 2094 hfp_connection->hf_send_rrh_command = '0'; 2095 hfp_hf_run_for_context(hfp_connection); 2096 return ERROR_CODE_SUCCESS; 2097 } 2098 2099 uint8_t hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 2100 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2101 if (!hfp_connection) { 2102 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2103 } 2104 hfp_connection->hf_send_rrh = 1; 2105 hfp_connection->hf_send_rrh_command = '1'; 2106 hfp_hf_run_for_context(hfp_connection); 2107 return ERROR_CODE_SUCCESS; 2108 } 2109 2110 uint8_t hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 2111 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2112 if (!hfp_connection) { 2113 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2114 } 2115 hfp_connection->hf_send_rrh = 1; 2116 hfp_connection->hf_send_rrh_command = '2'; 2117 hfp_hf_run_for_context(hfp_connection); 2118 return ERROR_CODE_SUCCESS; 2119 } 2120 2121 uint8_t hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 2122 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2123 if (!hfp_connection) { 2124 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2125 } 2126 hfp_connection->hf_send_cnum = 1; 2127 hfp_hf_run_for_context(hfp_connection); 2128 return ERROR_CODE_SUCCESS; 2129 } 2130 2131 uint8_t hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 2132 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2133 if (!hfp_connection) { 2134 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2135 } 2136 // find index for assigned number 2137 int i; 2138 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 2139 if (hfp_hf_indicators[i] == assigned_number){ 2140 // set value 2141 hfp_hf_indicators_value[i] = value; 2142 // mark for update 2143 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 2144 hfp_connection->generic_status_update_bitmap |= (1<<i); 2145 // send update 2146 hfp_hf_run_for_context(hfp_connection); 2147 } 2148 return ERROR_CODE_SUCCESS; 2149 } 2150 } 2151 return ERROR_CODE_SUCCESS; 2152 } 2153 2154 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 2155 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2156 if (!hfp_connection) { 2157 return 0; 2158 } 2159 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 2160 } 2161 2162 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){ 2163 if (!name){ 2164 name = hfp_hf_default_service_name; 2165 } 2166 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 2167 2168 // Construct SupportedFeatures for SDP bitmap: 2169 // 2170 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2171 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2172 // 2173 // Wide band speech (bit 5) requires Codec negotiation 2174 // 2175 uint16_t sdp_features = supported_features & 0x1f; 2176 if ( (wide_band_speech != 0) && (supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION))){ 2177 sdp_features |= 1 << 5; 2178 } 2179 2180 if (supported_features & (1 << HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2181 sdp_features |= 1 << 6; 2182 } 2183 2184 if (supported_features & (1 << HFP_HFSF_VOICE_RECOGNITION_TEXT)){ 2185 sdp_features |= 1 << 7; 2186 } 2187 2188 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2189 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2190 } 2191 2192 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 2193 btstack_assert(callback != NULL); 2194 2195 hfp_hf_callback = callback; 2196 hfp_set_hf_callback(callback); 2197 } 2198