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->local_role, 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 // last argument is still in line_buffer 1273 1274 switch (hfp_connection->command){ 1275 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1276 hfp_connection->command = HFP_CMD_NONE; 1277 hfp_hf_emit_subscriber_information(hfp_connection, 0); 1278 break; 1279 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1280 hfp_connection->command = HFP_CMD_NONE; 1281 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1282 break; 1283 case HFP_CMD_LIST_CURRENT_CALLS: 1284 hfp_connection->command = HFP_CMD_NONE; 1285 hfp_hf_emit_enhanced_call_status(hfp_connection); 1286 break; 1287 case HFP_CMD_SET_SPEAKER_GAIN: 1288 hfp_connection->command = HFP_CMD_NONE; 1289 value = btstack_atoi((char*)hfp_connection->line_buffer); 1290 hfp_hf_speaker_gain = value; 1291 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1292 break; 1293 case HFP_CMD_SET_MICROPHONE_GAIN: 1294 hfp_connection->command = HFP_CMD_NONE; 1295 value = btstack_atoi((char*)hfp_connection->line_buffer); 1296 hfp_hf_microphone_gain = value; 1297 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1298 break; 1299 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1300 hfp_connection->command = HFP_CMD_NONE; 1301 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1302 break; 1303 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1304 hfp_connection->command = HFP_CMD_NONE; 1305 hfp_hf_emit_type_and_number(hfp_connection, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION); 1306 break; 1307 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1308 hfp_connection->command = HFP_CMD_NONE; 1309 hfp_hf_emit_type_and_number(hfp_connection, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION); 1310 break; 1311 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1312 hfp_connection->command = HFP_CMD_NONE; 1313 hfp_connection->ok_pending = 0; 1314 hfp_connection->extended_audio_gateway_error = 0; 1315 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1316 break; 1317 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 1318 break; 1319 case HFP_CMD_ERROR: 1320 switch (hfp_connection->state){ 1321 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1322 switch (hfp_connection->codecs_state){ 1323 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1324 hfp_reset_context_flags(hfp_connection); 1325 hfp_emit_sco_event(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 0, hfp_connection->remote_addr, hfp_connection->negotiated_codec); 1326 return; 1327 default: 1328 break; 1329 } 1330 break; 1331 default: 1332 break; 1333 } 1334 1335 // handle error response for voice activation (HF initiated) 1336 switch(hfp_connection->vra_state_requested){ 1337 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1338 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1339 break; 1340 default: 1341 if (hfp_connection->vra_state_requested == hfp_connection->vra_state){ 1342 break; 1343 } 1344 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1345 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1346 hfp_reset_context_flags(hfp_connection); 1347 return; 1348 } 1349 event_emited = hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1350 if (!event_emited){ 1351 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 1); 1352 } 1353 hfp_reset_context_flags(hfp_connection); 1354 break; 1355 1356 case HFP_CMD_OK: 1357 hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_SUCCESS); 1358 break; 1359 case HFP_CMD_RING: 1360 hfp_connection->command = HFP_CMD_NONE; 1361 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1362 break; 1363 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1364 hfp_connection->command = HFP_CMD_NONE; 1365 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1366 break; 1367 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1368 hfp_connection->command = HFP_CMD_NONE; 1369 // report status after SLC established 1370 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 1371 break; 1372 } 1373 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1374 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1375 } 1376 break; 1377 case HFP_CMD_AG_SUGGESTED_CODEC: 1378 hfp_connection->command = HFP_CMD_NONE; 1379 hfp_hf_handle_suggested_codec(hfp_connection); 1380 break; 1381 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1382 hfp_emit_event(hfp_connection, HFP_SUBEVENT_IN_BAND_RING_TONE, get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE)); 1383 default: 1384 break; 1385 } 1386 } 1387 1388 static int hfp_parser_is_end_of_line(uint8_t byte){ 1389 return (byte == '\n') || (byte == '\r'); 1390 } 1391 1392 static void hfp_hf_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 1393 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1394 if (size < 1) return; 1395 1396 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1397 #ifdef ENABLE_HFP_AT_MESSAGES 1398 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1399 #endif 1400 1401 // process messages byte-wise 1402 uint8_t pos; 1403 for (pos = 0; pos < size; pos++){ 1404 hfp_parse(hfp_connection, packet[pos], 1); 1405 // parse until end of line "\r" or "\n" 1406 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1407 hfp_hf_handle_rfcomm_command(hfp_connection); 1408 } 1409 } 1410 1411 static void hfp_hf_run(void){ 1412 btstack_linked_list_iterator_t it; 1413 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1414 while (btstack_linked_list_iterator_has_next(&it)){ 1415 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1416 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1417 hfp_hf_run_for_context(hfp_connection); 1418 } 1419 } 1420 1421 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1422 hfp_connection_t * hfp_connection; 1423 switch (packet_type){ 1424 case RFCOMM_DATA_PACKET: 1425 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1426 if (!hfp_connection) return; 1427 hfp_hf_handle_rfcomm_data(hfp_connection, packet, size); 1428 hfp_hf_run_for_context(hfp_connection); 1429 return; 1430 case HCI_EVENT_PACKET: 1431 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1432 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1433 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1434 return; 1435 } 1436 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1437 break; 1438 default: 1439 break; 1440 } 1441 hfp_hf_run(); 1442 } 1443 1444 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1445 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1446 hfp_hf_run(); 1447 } 1448 1449 static void hfp_hf_set_defaults(void){ 1450 hfp_hf_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1451 hfp_hf_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1452 hfp_hf_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1453 hfp_hf_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1454 hfp_hf_codecs_nr = 0; 1455 hfp_hf_speaker_gain = 9; 1456 hfp_hf_microphone_gain = 9; 1457 hfp_hf_indicators_nr = 0; 1458 } 1459 1460 uint8_t hfp_hf_init(uint16_t rfcomm_channel_nr){ 1461 uint8_t status = rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1462 if (status != ERROR_CODE_SUCCESS){ 1463 return status; 1464 } 1465 1466 hfp_init(); 1467 hfp_hf_set_defaults(); 1468 1469 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1470 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1471 1472 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1473 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1474 return ERROR_CODE_SUCCESS; 1475 } 1476 1477 void hfp_hf_deinit(void){ 1478 hfp_deinit(); 1479 hfp_hf_set_defaults(); 1480 1481 hfp_hf_callback = NULL; 1482 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1483 (void) memset(hfp_hf_phone_number, 0, sizeof(hfp_hf_phone_number)); 1484 } 1485 1486 void hfp_hf_init_codecs(int codecs_nr, const uint8_t * codecs){ 1487 btstack_assert(codecs_nr < HFP_MAX_NUM_CODECS); 1488 1489 hfp_hf_codecs_nr = codecs_nr; 1490 int i; 1491 for (i=0; i<codecs_nr; i++){ 1492 hfp_hf_codecs[i] = codecs[i]; 1493 } 1494 } 1495 1496 void hfp_hf_init_supported_features(uint32_t supported_features){ 1497 hfp_hf_supported_features = supported_features; 1498 } 1499 1500 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1501 btstack_assert(hfp_hf_indicators_nr < HFP_MAX_NUM_INDICATORS); 1502 1503 hfp_hf_indicators_nr = indicators_nr; 1504 int i; 1505 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 1506 hfp_hf_indicators[i] = indicators[i]; 1507 } 1508 } 1509 1510 uint8_t hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1511 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1512 } 1513 1514 uint8_t hfp_hf_release_service_level_connection(hci_con_handle_t acl_handle){ 1515 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1516 if (!hfp_connection){ 1517 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1518 } 1519 hfp_trigger_release_service_level_connection(hfp_connection); 1520 hfp_hf_run_for_context(hfp_connection); 1521 return ERROR_CODE_SUCCESS; 1522 } 1523 1524 static uint8_t hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1525 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1526 if (!hfp_connection) { 1527 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1528 } 1529 hfp_connection->enable_status_update_for_ag_indicators = enable; 1530 hfp_hf_run_for_context(hfp_connection); 1531 return ERROR_CODE_SUCCESS; 1532 } 1533 1534 uint8_t hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1535 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1536 } 1537 1538 uint8_t hfp_hf_disable_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, 0); 1540 } 1541 1542 // TODO: returned ERROR - wrong format 1543 uint8_t hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1544 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1545 if (!hfp_connection) { 1546 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1547 } 1548 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1549 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1550 hfp_hf_run_for_context(hfp_connection); 1551 return ERROR_CODE_SUCCESS; 1552 } 1553 1554 uint8_t hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1555 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1556 if (!hfp_connection) { 1557 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1558 } 1559 1560 switch (hfp_connection->hf_query_operator_state){ 1561 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1562 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1563 break; 1564 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1565 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1566 break; 1567 default: 1568 return ERROR_CODE_COMMAND_DISALLOWED; 1569 } 1570 hfp_hf_run_for_context(hfp_connection); 1571 return ERROR_CODE_SUCCESS; 1572 } 1573 1574 static uint8_t hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1575 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1576 if (!hfp_connection) { 1577 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1578 } 1579 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1580 hfp_hf_run_for_context(hfp_connection); 1581 return ERROR_CODE_SUCCESS; 1582 } 1583 1584 1585 uint8_t hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1586 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1587 } 1588 1589 uint8_t hfp_hf_disable_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, 0); 1591 } 1592 1593 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1594 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_hf_supported_features & (1 << HFP_HFSF_ESCO_S4)); 1595 } 1596 1597 uint8_t hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1598 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1599 if (!hfp_connection) { 1600 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1601 } 1602 1603 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1604 return ERROR_CODE_COMMAND_DISALLOWED; 1605 } 1606 1607 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 1608 return ERROR_CODE_COMMAND_DISALLOWED; 1609 } 1610 if (has_codec_negotiation_feature(hfp_connection)) { 1611 switch (hfp_connection->codecs_state) { 1612 case HFP_CODECS_W4_AG_COMMON_CODEC: 1613 break; 1614 case HFP_CODECS_EXCHANGED: 1615 hfp_connection->trigger_codec_exchange = 1; 1616 break; 1617 default: 1618 hfp_connection->codec_confirmed = 0; 1619 hfp_connection->suggested_codec = 0; 1620 hfp_connection->negotiated_codec = 0; 1621 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1622 hfp_connection->trigger_codec_exchange = 1; 1623 break; 1624 } 1625 } else { 1626 log_info("no codec negotiation feature, use CVSD"); 1627 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1628 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1629 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1630 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1631 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1632 hfp_connection->establish_audio_connection = 1; 1633 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1634 } 1635 1636 hfp_hf_run_for_context(hfp_connection); 1637 return ERROR_CODE_SUCCESS; 1638 } 1639 1640 uint8_t hfp_hf_release_audio_connection(hci_con_handle_t acl_handle){ 1641 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1642 if (!hfp_connection) { 1643 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1644 } 1645 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 1646 return ERROR_CODE_COMMAND_DISALLOWED; 1647 } 1648 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 1649 if (status == ERROR_CODE_SUCCESS){ 1650 hfp_hf_run_for_context(hfp_connection); 1651 } 1652 return ERROR_CODE_SUCCESS; 1653 } 1654 1655 uint8_t hfp_hf_answer_incoming_call(hci_con_handle_t acl_handle){ 1656 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1657 if (!hfp_connection) { 1658 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1659 } 1660 1661 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1662 hfp_connection->hf_answer_incoming_call = 1; 1663 hfp_hf_run_for_context(hfp_connection); 1664 } else { 1665 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_hf_callsetup_status); 1666 return ERROR_CODE_COMMAND_DISALLOWED; 1667 } 1668 return ERROR_CODE_SUCCESS; 1669 } 1670 1671 uint8_t hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1672 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1673 if (!hfp_connection) { 1674 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1675 } 1676 hfp_connection->hf_send_chup = 1; 1677 hfp_hf_run_for_context(hfp_connection); 1678 return ERROR_CODE_SUCCESS; 1679 } 1680 1681 uint8_t hfp_hf_reject_incoming_call(hci_con_handle_t acl_handle){ 1682 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1683 if (!hfp_connection) { 1684 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1685 } 1686 1687 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1688 hfp_connection->hf_send_chup = 1; 1689 hfp_hf_run_for_context(hfp_connection); 1690 } 1691 return ERROR_CODE_SUCCESS; 1692 } 1693 1694 uint8_t hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1695 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1696 if (!hfp_connection) { 1697 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1698 } 1699 1700 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1701 hfp_connection->hf_send_chld_0 = 1; 1702 hfp_hf_run_for_context(hfp_connection); 1703 } 1704 return ERROR_CODE_SUCCESS; 1705 } 1706 1707 uint8_t hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1708 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1709 if (!hfp_connection) { 1710 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1711 } 1712 1713 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1714 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1715 hfp_connection->hf_send_chld_1 = 1; 1716 hfp_hf_run_for_context(hfp_connection); 1717 } 1718 return ERROR_CODE_SUCCESS; 1719 } 1720 1721 uint8_t hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1722 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1723 if (!hfp_connection) { 1724 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1725 } 1726 1727 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1728 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1729 hfp_connection->hf_send_chld_2 = 1; 1730 hfp_hf_run_for_context(hfp_connection); 1731 } 1732 return ERROR_CODE_SUCCESS; 1733 } 1734 1735 uint8_t hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1736 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1737 if (!hfp_connection) { 1738 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1739 } 1740 1741 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1742 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1743 hfp_connection->hf_send_chld_3 = 1; 1744 hfp_hf_run_for_context(hfp_connection); 1745 } 1746 return ERROR_CODE_SUCCESS; 1747 } 1748 1749 uint8_t hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1750 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1751 if (!hfp_connection) { 1752 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1753 } 1754 1755 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1756 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1757 hfp_connection->hf_send_chld_4 = 1; 1758 hfp_hf_run_for_context(hfp_connection); 1759 } 1760 return ERROR_CODE_SUCCESS; 1761 } 1762 1763 uint8_t hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1764 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1765 if (!hfp_connection) { 1766 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1767 } 1768 1769 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1770 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1771 hfp_connection->hf_send_chld_x = 1; 1772 hfp_connection->hf_send_chld_x_index = 10 + index; 1773 hfp_hf_run_for_context(hfp_connection); 1774 } 1775 return ERROR_CODE_SUCCESS; 1776 } 1777 1778 uint8_t hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 1779 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1780 if (!hfp_connection) { 1781 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1782 } 1783 1784 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1785 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1786 hfp_connection->hf_send_chld_x = 1; 1787 hfp_connection->hf_send_chld_x_index = 20 + index; 1788 hfp_hf_run_for_context(hfp_connection); 1789 } 1790 return ERROR_CODE_SUCCESS; 1791 } 1792 1793 uint8_t hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 1794 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1795 if (!hfp_connection) { 1796 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1797 } 1798 1799 hfp_connection->hf_initiate_outgoing_call = 1; 1800 snprintf(hfp_hf_phone_number, sizeof(hfp_hf_phone_number), "%s", number); 1801 hfp_hf_run_for_context(hfp_connection); 1802 return ERROR_CODE_SUCCESS; 1803 } 1804 1805 uint8_t hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 1806 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1807 if (!hfp_connection) { 1808 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1809 } 1810 1811 hfp_connection->hf_initiate_memory_dialing = 1; 1812 hfp_connection->memory_id = memory_id; 1813 1814 hfp_hf_run_for_context(hfp_connection); 1815 return ERROR_CODE_SUCCESS; 1816 } 1817 1818 uint8_t hfp_hf_redial_last_number(hci_con_handle_t acl_handle){ 1819 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1820 if (!hfp_connection) { 1821 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1822 } 1823 1824 hfp_connection->hf_initiate_redial_last_number = 1; 1825 hfp_hf_run_for_context(hfp_connection); 1826 return ERROR_CODE_SUCCESS; 1827 } 1828 1829 uint8_t hfp_hf_activate_call_waiting_notification(hci_con_handle_t acl_handle){ 1830 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1831 if (!hfp_connection) { 1832 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1833 } 1834 1835 hfp_connection->hf_activate_call_waiting_notification = 1; 1836 hfp_hf_run_for_context(hfp_connection); 1837 return ERROR_CODE_SUCCESS; 1838 } 1839 1840 1841 uint8_t hfp_hf_deactivate_call_waiting_notification(hci_con_handle_t acl_handle){ 1842 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1843 if (!hfp_connection) { 1844 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1845 } 1846 1847 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1848 hfp_hf_run_for_context(hfp_connection); 1849 return ERROR_CODE_SUCCESS; 1850 } 1851 1852 1853 uint8_t hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1854 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1855 if (!hfp_connection) { 1856 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1857 } 1858 1859 hfp_connection->hf_activate_calling_line_notification = 1; 1860 hfp_hf_run_for_context(hfp_connection); 1861 return ERROR_CODE_SUCCESS; 1862 } 1863 1864 uint8_t hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1865 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1866 if (!hfp_connection) { 1867 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1868 } 1869 1870 hfp_connection->hf_deactivate_calling_line_notification = 1; 1871 hfp_hf_run_for_context(hfp_connection); 1872 return ERROR_CODE_SUCCESS; 1873 } 1874 1875 static bool hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection_t * hfp_connection){ 1876 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_EC_NR_FUNCTION); 1877 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_EC_NR_FUNCTION); 1878 return hf && ag; 1879 } 1880 1881 uint8_t hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1882 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1883 if (!hfp_connection) { 1884 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1885 } 1886 if (!hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection)){ 1887 return ERROR_CODE_COMMAND_DISALLOWED; 1888 } 1889 1890 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1891 hfp_hf_run_for_context(hfp_connection); 1892 return ERROR_CODE_SUCCESS; 1893 } 1894 1895 uint8_t hfp_hf_activate_voice_recognition(hci_con_handle_t acl_handle){ 1896 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1897 if (!hfp_connection) { 1898 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1899 } 1900 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1901 return ERROR_CODE_COMMAND_DISALLOWED; 1902 } 1903 1904 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1905 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1906 if (!enhanced_vra_supported && !legacy_vra_supported){ 1907 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1908 } 1909 1910 switch (hfp_connection->vra_state){ 1911 case HFP_VRA_VOICE_RECOGNITION_OFF: 1912 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1913 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 1914 hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 1915 break; 1916 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1917 hfp_connection->activate_voice_recognition = true; 1918 break; 1919 default: 1920 return ERROR_CODE_COMMAND_DISALLOWED; 1921 } 1922 1923 hfp_hf_run_for_context(hfp_connection); 1924 return ERROR_CODE_SUCCESS; 1925 } 1926 1927 uint8_t hfp_hf_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 1928 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1929 if (!hfp_connection) { 1930 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1931 } 1932 1933 if (hfp_connection->emit_vra_enabled_after_audio_established){ 1934 return ERROR_CODE_COMMAND_DISALLOWED; 1935 } 1936 1937 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 1938 return ERROR_CODE_COMMAND_DISALLOWED; 1939 } 1940 1941 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1942 if (!enhanced_vra_supported){ 1943 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1944 } 1945 1946 switch (hfp_connection->vra_state){ 1947 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 1948 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1949 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 1950 break; 1951 default: 1952 return ERROR_CODE_COMMAND_DISALLOWED; 1953 } 1954 1955 hfp_hf_run_for_context(hfp_connection); 1956 return ERROR_CODE_SUCCESS; 1957 } 1958 1959 1960 uint8_t hfp_hf_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 1961 // return deactivate_voice_recognition(acl_handle, false); 1962 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1963 if (!hfp_connection) { 1964 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1965 } 1966 1967 if (hfp_connection->emit_vra_enabled_after_audio_established){ 1968 return ERROR_CODE_COMMAND_DISALLOWED; 1969 } 1970 1971 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 1972 hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1973 return ERROR_CODE_COMMAND_DISALLOWED; 1974 } 1975 1976 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1977 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1978 if (!enhanced_vra_supported && !legacy_vra_supported){ 1979 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1980 } 1981 1982 switch (hfp_connection->vra_state){ 1983 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 1984 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 1985 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1986 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1987 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 1988 break; 1989 1990 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 1991 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1992 hfp_connection->deactivate_voice_recognition = true; 1993 break; 1994 1995 case HFP_VRA_VOICE_RECOGNITION_OFF: 1996 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1997 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1998 default: 1999 return ERROR_CODE_COMMAND_DISALLOWED; 2000 } 2001 2002 hfp_hf_run_for_context(hfp_connection); 2003 return ERROR_CODE_SUCCESS; 2004 } 2005 2006 uint8_t hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2007 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2008 if (!hfp_connection) { 2009 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2010 } 2011 2012 if (hfp_connection->microphone_gain == gain) { 2013 return ERROR_CODE_SUCCESS; 2014 } 2015 2016 if ((gain < 0) || (gain > 15)){ 2017 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2018 return ERROR_CODE_COMMAND_DISALLOWED; 2019 } 2020 2021 hfp_connection->microphone_gain = gain; 2022 hfp_connection->send_microphone_gain = 1; 2023 hfp_hf_run_for_context(hfp_connection); 2024 return ERROR_CODE_SUCCESS; 2025 } 2026 2027 uint8_t hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2028 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2029 if (!hfp_connection) { 2030 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2031 } 2032 2033 if (hfp_connection->speaker_gain == gain){ 2034 return ERROR_CODE_SUCCESS; 2035 } 2036 2037 if ((gain < 0) || (gain > 15)){ 2038 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2039 return ERROR_CODE_COMMAND_DISALLOWED; 2040 } 2041 2042 hfp_connection->speaker_gain = gain; 2043 hfp_connection->send_speaker_gain = 1; 2044 hfp_hf_run_for_context(hfp_connection); 2045 return ERROR_CODE_SUCCESS; 2046 } 2047 2048 uint8_t hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 2049 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2050 if (!hfp_connection) { 2051 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2052 } 2053 hfp_connection->hf_send_dtmf_code = code; 2054 hfp_hf_run_for_context(hfp_connection); 2055 return ERROR_CODE_SUCCESS; 2056 } 2057 2058 uint8_t hfp_hf_request_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2059 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2060 if (!hfp_connection) { 2061 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2062 } 2063 hfp_connection->hf_send_binp = 1; 2064 hfp_hf_run_for_context(hfp_connection); 2065 return ERROR_CODE_SUCCESS; 2066 } 2067 2068 uint8_t hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 2069 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2070 if (!hfp_connection) { 2071 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2072 } 2073 hfp_connection->hf_send_clcc = 1; 2074 hfp_hf_run_for_context(hfp_connection); 2075 return ERROR_CODE_SUCCESS; 2076 } 2077 2078 2079 uint8_t hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 2080 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2081 if (!hfp_connection) { 2082 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2083 } 2084 hfp_connection->hf_send_rrh = 1; 2085 hfp_connection->hf_send_rrh_command = '?'; 2086 hfp_hf_run_for_context(hfp_connection); 2087 return ERROR_CODE_SUCCESS; 2088 } 2089 2090 uint8_t hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 2091 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2092 if (!hfp_connection) { 2093 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2094 } 2095 hfp_connection->hf_send_rrh = 1; 2096 hfp_connection->hf_send_rrh_command = '0'; 2097 hfp_hf_run_for_context(hfp_connection); 2098 return ERROR_CODE_SUCCESS; 2099 } 2100 2101 uint8_t hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 2102 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2103 if (!hfp_connection) { 2104 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2105 } 2106 hfp_connection->hf_send_rrh = 1; 2107 hfp_connection->hf_send_rrh_command = '1'; 2108 hfp_hf_run_for_context(hfp_connection); 2109 return ERROR_CODE_SUCCESS; 2110 } 2111 2112 uint8_t hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 2113 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2114 if (!hfp_connection) { 2115 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2116 } 2117 hfp_connection->hf_send_rrh = 1; 2118 hfp_connection->hf_send_rrh_command = '2'; 2119 hfp_hf_run_for_context(hfp_connection); 2120 return ERROR_CODE_SUCCESS; 2121 } 2122 2123 uint8_t hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 2124 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2125 if (!hfp_connection) { 2126 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2127 } 2128 hfp_connection->hf_send_cnum = 1; 2129 hfp_hf_run_for_context(hfp_connection); 2130 return ERROR_CODE_SUCCESS; 2131 } 2132 2133 uint8_t hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 2134 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2135 if (!hfp_connection) { 2136 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2137 } 2138 // find index for assigned number 2139 int i; 2140 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 2141 if (hfp_hf_indicators[i] == assigned_number){ 2142 // set value 2143 hfp_hf_indicators_value[i] = value; 2144 // mark for update 2145 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 2146 hfp_connection->generic_status_update_bitmap |= (1<<i); 2147 // send update 2148 hfp_hf_run_for_context(hfp_connection); 2149 } 2150 return ERROR_CODE_SUCCESS; 2151 } 2152 } 2153 return ERROR_CODE_SUCCESS; 2154 } 2155 2156 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 2157 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2158 if (!hfp_connection) { 2159 return 0; 2160 } 2161 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 2162 } 2163 2164 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){ 2165 if (!name){ 2166 name = hfp_hf_default_service_name; 2167 } 2168 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 2169 2170 // Construct SupportedFeatures for SDP bitmap: 2171 // 2172 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2173 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2174 // 2175 // Wide band speech (bit 5) requires Codec negotiation 2176 // 2177 uint16_t sdp_features = supported_features & 0x1f; 2178 if ( (wide_band_speech != 0) && (supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION))){ 2179 sdp_features |= 1 << 5; 2180 } 2181 2182 if (supported_features & (1 << HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2183 sdp_features |= 1 << 6; 2184 } 2185 2186 if (supported_features & (1 << HFP_HFSF_VOICE_RECOGNITION_TEXT)){ 2187 sdp_features |= 1 << 7; 2188 } 2189 2190 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2191 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2192 } 2193 2194 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 2195 btstack_assert(callback != NULL); 2196 2197 hfp_hf_callback = callback; 2198 hfp_set_hf_callback(callback); 2199 } 2200