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_number_alpha(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 // 10 fixed - 1 (bnip_number_len <= sizeof(hfp_connection->bnip_number)-1) + 1 (trailing \0 for line buffer) 160 uint8_t event[10 + sizeof(hfp_connection->bnip_number) + sizeof(hfp_connection->line_buffer)]; 161 uint8_t alpha_len = hfp_connection->clip_have_alpha ? strlen((const char *) hfp_connection->line_buffer) : 0; 162 uint8_t pos = 0; 163 event[pos++] = HCI_EVENT_HFP_META; 164 event[pos++] = 8 + bnip_number_len + alpha_len; 165 event[pos++] = event_subtype; 166 little_endian_store_16(event, 3, hfp_connection->acl_handle); 167 pos += 2; 168 event[pos++] = hfp_connection->bnip_type; 169 event[pos++] = bnip_number_len + 1; 170 memcpy(&event[7], hfp_connection->bnip_number, bnip_number_len); 171 pos += bnip_number_len; 172 event[pos++] = 0; 173 event[pos++] = alpha_len + 1; 174 memcpy(&event[pos], hfp_connection->line_buffer, alpha_len); 175 pos += alpha_len; 176 event[pos++] = 0; 177 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 178 } 179 180 static void hfp_hf_emit_enhanced_call_status(const hfp_connection_t * hfp_connection){ 181 if (hfp_hf_callback == NULL) return; 182 183 uint16_t bnip_number_len = strlen((const char *) hfp_connection->bnip_number); 184 uint8_t event[11 + HFP_BNEP_NUM_MAX_SIZE]; 185 event[0] = HCI_EVENT_HFP_META; 186 event[1] = 10 + bnip_number_len + 1; 187 event[2] = HFP_SUBEVENT_ENHANCED_CALL_STATUS; 188 little_endian_store_16(event, 3, hfp_connection->acl_handle); 189 event[5] = hfp_connection->clcc_idx; 190 event[6] = hfp_connection->clcc_dir; 191 event[7] = hfp_connection->clcc_status; 192 event[8] = hfp_connection->clcc_mode; 193 event[9] = hfp_connection->clcc_mpty; 194 event[10] = hfp_connection->bnip_type; 195 memcpy(&event[11], hfp_connection->bnip_number, bnip_number_len + 1); 196 197 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 11 + bnip_number_len + 1); 198 } 199 200 static void hfp_emit_ag_indicator_mapping_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 201 if (hfp_hf_callback == NULL) return; 202 uint8_t event[8 + HFP_MAX_INDICATOR_DESC_SIZE]; 203 uint16_t indicator_len = btstack_min(strlen(indicator->name), HFP_MAX_INDICATOR_DESC_SIZE-1); 204 event[0] = HCI_EVENT_HFP_META; 205 event[1] = 7 + indicator_len; 206 event[2] = HFP_SUBEVENT_AG_INDICATOR_MAPPING; 207 little_endian_store_16(event, 3, hfp_connection->acl_handle); 208 event[5] = indicator->index; 209 event[6] = indicator->min_range; 210 event[7] = indicator->max_range; 211 memcpy(&event[8], indicator->name, indicator_len); 212 event[8+indicator_len] = 0; 213 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 9 + indicator_len); 214 } 215 216 static void hfp_emit_ag_indicator_status_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 217 if (hfp_hf_callback == NULL) return; 218 uint8_t event[12+HFP_MAX_INDICATOR_DESC_SIZE]; 219 uint16_t indicator_len = btstack_min(strlen(indicator->name), HFP_MAX_INDICATOR_DESC_SIZE-1); 220 event[0] = HCI_EVENT_HFP_META; 221 event[1] = 11 + indicator_len; 222 event[2] = HFP_SUBEVENT_AG_INDICATOR_STATUS_CHANGED; 223 little_endian_store_16(event, 3, hfp_connection->acl_handle); 224 event[5] = indicator->index; 225 event[6] = indicator->status; 226 event[7] = indicator->min_range; 227 event[8] = indicator->max_range; 228 event[9] = indicator->mandatory; 229 event[10] = indicator->enabled; 230 event[11] = indicator->status_changed; 231 memcpy(&event[12], indicator->name, indicator_len); 232 event[12+indicator_len] = 0; 233 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 13 + indicator_len); 234 } 235 236 static void hfp_emit_network_operator_event(const hfp_connection_t * hfp_connection){ 237 if (hfp_hf_callback == NULL) return; 238 uint16_t operator_len = btstack_min(strlen(hfp_connection->network_operator.name), HFP_MAX_NETWORK_OPERATOR_NAME_SIZE-1); 239 uint8_t event[7+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE]; 240 event[0] = HCI_EVENT_HFP_META; 241 event[1] = sizeof(event) - 2; 242 event[2] = HFP_SUBEVENT_NETWORK_OPERATOR_CHANGED; 243 little_endian_store_16(event, 3, hfp_connection->acl_handle); 244 event[5] = hfp_connection->network_operator.mode; 245 event[6] = hfp_connection->network_operator.format; 246 memcpy(&event[7], hfp_connection->network_operator.name, operator_len); 247 event[7+operator_len] = 0; 248 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 8 + operator_len); 249 } 250 251 252 static void hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection_t * hfp_connection){ 253 btstack_assert(hfp_connection != NULL); 254 uint8_t event[HFP_MAX_VR_TEXT_SIZE + 11]; 255 int pos = 0; 256 event[pos++] = HCI_EVENT_HFP_META; 257 event[pos++] = sizeof(event) - 2; 258 event[pos++] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE; 259 little_endian_store_16(event, pos, hfp_connection->acl_handle); 260 pos += 2; 261 little_endian_store_16(event, pos, hfp_connection->ag_msg.text_id); 262 pos += 2; 263 event[pos++] = hfp_connection->ag_msg.text_type; 264 event[pos++] = hfp_connection->ag_msg.text_operation; 265 266 // length, zero ending is already in message 267 uint8_t * value = &hfp_connection->line_buffer[0]; 268 uint16_t value_length = hfp_connection->ag_vra_msg_length; 269 270 little_endian_store_16(event, pos, value_length); 271 pos += 2; 272 memcpy(&event[pos], value, value_length); 273 pos += value_length; 274 275 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 276 } 277 278 /* send commands */ 279 280 static inline int hfp_hf_send_cmd(uint16_t cid, const char * cmd){ 281 char buffer[20]; 282 snprintf(buffer, sizeof(buffer), "AT%s\r", cmd); 283 return send_str_over_rfcomm(cid, buffer); 284 } 285 286 static inline int hfp_hf_send_cmd_with_mark(uint16_t cid, const char * cmd, const char * mark){ 287 char buffer[20]; 288 snprintf(buffer, sizeof(buffer), "AT%s%s\r", cmd, mark); 289 return send_str_over_rfcomm(cid, buffer); 290 } 291 292 static inline int hfp_hf_send_cmd_with_int(uint16_t cid, const char * cmd, uint16_t value){ 293 char buffer[40]; 294 snprintf(buffer, sizeof(buffer), "AT%s=%d\r", cmd, value); 295 return send_str_over_rfcomm(cid, buffer); 296 } 297 298 static int hfp_hf_cmd_notify_on_codecs(uint16_t cid){ 299 char buffer[30]; 300 const int size = sizeof(buffer); 301 int offset = snprintf(buffer, size, "AT%s=", HFP_AVAILABLE_CODECS); 302 offset += join(buffer+offset, size-offset, hfp_hf_codecs, hfp_hf_codecs_nr); 303 offset += snprintf(buffer+offset, size-offset, "\r"); 304 return send_str_over_rfcomm(cid, buffer); 305 } 306 307 static int hfp_hf_cmd_activate_status_update_for_ag_indicator(uint16_t cid, uint32_t indicators_status, int indicators_nr){ 308 char buffer[50]; 309 const int size = sizeof(buffer); 310 int offset = snprintf(buffer, size, "AT%s=", HFP_UPDATE_ENABLE_STATUS_FOR_INDIVIDUAL_AG_INDICATORS); 311 offset += join_bitmap(buffer+offset, size-offset, indicators_status, indicators_nr); 312 offset += snprintf(buffer+offset, size-offset, "\r"); 313 return send_str_over_rfcomm(cid, buffer); 314 } 315 316 static int hfp_hf_cmd_list_supported_generic_status_indicators(uint16_t cid){ 317 char buffer[30]; 318 const int size = sizeof(buffer); 319 int offset = snprintf(buffer, size, "AT%s=", HFP_GENERIC_STATUS_INDICATOR); 320 offset += join(buffer+offset, size-offset, hfp_hf_indicators, hfp_hf_indicators_nr); 321 offset += snprintf(buffer+offset, size-offset, "\r"); 322 return send_str_over_rfcomm(cid, buffer); 323 } 324 325 static int hfp_hf_cmd_activate_status_update_for_all_ag_indicators(uint16_t cid, uint8_t activate){ 326 char buffer[20]; 327 snprintf(buffer, sizeof(buffer), "AT%s=3,0,0,%d\r", HFP_ENABLE_STATUS_UPDATE_FOR_AG_INDICATORS, activate); 328 return send_str_over_rfcomm(cid, buffer); 329 } 330 331 static int hfp_hf_initiate_outgoing_call_cmd(uint16_t cid){ 332 char buffer[40]; 333 snprintf(buffer, sizeof(buffer), "%s%s;\r", HFP_CALL_PHONE_NUMBER, hfp_hf_phone_number); 334 return send_str_over_rfcomm(cid, buffer); 335 } 336 337 static int hfp_hf_send_memory_dial_cmd(uint16_t cid, int memory_id){ 338 char buffer[40]; 339 snprintf(buffer, sizeof(buffer), "%s>%d;\r", HFP_CALL_PHONE_NUMBER, memory_id); 340 return send_str_over_rfcomm(cid, buffer); 341 } 342 343 static int hfp_hf_send_chld(uint16_t cid, unsigned int number){ 344 char buffer[40]; 345 snprintf(buffer, sizeof(buffer), "AT%s=%u\r", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, number); 346 return send_str_over_rfcomm(cid, buffer); 347 } 348 349 static int hfp_hf_send_dtmf(uint16_t cid, char code){ 350 char buffer[20]; 351 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", HFP_TRANSMIT_DTMF_CODES, code); 352 return send_str_over_rfcomm(cid, buffer); 353 } 354 355 static int hfp_hf_cmd_ata(uint16_t cid){ 356 return send_str_over_rfcomm(cid, (char *) "ATA\r"); 357 } 358 359 static int hfp_hf_cmd_exchange_supported_features(uint16_t cid){ 360 return hfp_hf_send_cmd_with_int(cid, HFP_SUPPORTED_FEATURES, hfp_hf_supported_features); 361 } 362 363 static int hfp_hf_cmd_retrieve_indicators(uint16_t cid){ 364 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "=?"); 365 } 366 367 static int hfp_hf_cmd_retrieve_indicators_status(uint16_t cid){ 368 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "?"); 369 } 370 371 static int hfp_hf_cmd_retrieve_can_hold_call(uint16_t cid){ 372 return hfp_hf_send_cmd_with_mark(cid, HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, "=?"); 373 } 374 375 static int hfp_hf_cmd_retrieve_supported_generic_status_indicators(uint16_t cid){ 376 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "=?"); 377 } 378 379 static int hfp_hf_cmd_list_initital_supported_generic_status_indicators(uint16_t cid){ 380 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "?"); 381 } 382 383 static int hfp_hf_cmd_query_operator_name_format(uint16_t cid){ 384 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "=3,0"); 385 } 386 387 static int hfp_hf_cmd_query_operator_name(uint16_t cid){ 388 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "?"); 389 } 390 391 static int hfp_hf_cmd_trigger_codec_connection_setup(uint16_t cid){ 392 return hfp_hf_send_cmd(cid, HFP_TRIGGER_CODEC_CONNECTION_SETUP); 393 } 394 395 static int hfp_hf_set_microphone_gain_cmd(uint16_t cid, int gain){ 396 return hfp_hf_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 397 } 398 399 static int hfp_hf_set_speaker_gain_cmd(uint16_t cid, int gain){ 400 return hfp_hf_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 401 } 402 403 static int hfp_hf_set_calling_line_notification_cmd(uint16_t cid, uint8_t activate){ 404 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CLIP, activate); 405 } 406 407 static int hfp_hf_set_voice_recognition_notification_cmd(uint16_t cid, uint8_t activate){ 408 return hfp_hf_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate); 409 } 410 411 static int hfp_hf_set_call_waiting_notification_cmd(uint16_t cid, uint8_t activate){ 412 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CALL_WAITING_NOTIFICATION, activate); 413 } 414 415 static int hfp_hf_cmd_confirm_codec(uint16_t cid, uint8_t codec){ 416 return hfp_hf_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 417 } 418 419 static int hfp_hf_cmd_enable_extended_audio_gateway_error_report(uint16_t cid, uint8_t enable){ 420 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR, enable); 421 } 422 423 static int hfp_hf_send_redial_last_number_cmd(uint16_t cid){ 424 return hfp_hf_send_cmd(cid, HFP_REDIAL_LAST_NUMBER); 425 } 426 427 static int hfp_hf_send_chup(uint16_t cid){ 428 return hfp_hf_send_cmd(cid, HFP_HANG_UP_CALL); 429 } 430 431 static int hfp_hf_send_binp(uint16_t cid){ 432 return hfp_hf_send_cmd_with_mark(cid, HFP_PHONE_NUMBER_FOR_VOICE_TAG, "=1"); 433 } 434 435 static int hfp_hf_send_clcc(uint16_t cid){ 436 return hfp_hf_send_cmd(cid, HFP_LIST_CURRENT_CALLS); 437 } 438 439 /* state machines */ 440 441 static int hfp_hf_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 442 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 443 if (hfp_connection->ok_pending) return 0; 444 int done = 1; 445 log_info("hfp_hf_run_for_context_service_level_connection state %d\n", hfp_connection->state); 446 switch (hfp_connection->state){ 447 case HFP_EXCHANGE_SUPPORTED_FEATURES: 448 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_hf_codecs, &hfp_hf_codecs_nr); 449 hfp_connection->state = HFP_W4_EXCHANGE_SUPPORTED_FEATURES; 450 hfp_hf_cmd_exchange_supported_features(hfp_connection->rfcomm_cid); 451 break; 452 case HFP_NOTIFY_ON_CODECS: 453 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 454 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 455 break; 456 case HFP_RETRIEVE_INDICATORS: 457 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 458 hfp_hf_cmd_retrieve_indicators(hfp_connection->rfcomm_cid); 459 break; 460 case HFP_RETRIEVE_INDICATORS_STATUS: 461 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 462 hfp_hf_cmd_retrieve_indicators_status(hfp_connection->rfcomm_cid); 463 break; 464 case HFP_ENABLE_INDICATORS_STATUS_UPDATE: 465 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 466 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, 1); 467 break; 468 case HFP_RETRIEVE_CAN_HOLD_CALL: 469 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 470 hfp_hf_cmd_retrieve_can_hold_call(hfp_connection->rfcomm_cid); 471 break; 472 case HFP_LIST_GENERIC_STATUS_INDICATORS: 473 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 474 hfp_hf_cmd_list_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 475 break; 476 case HFP_RETRIEVE_GENERIC_STATUS_INDICATORS: 477 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 478 hfp_hf_cmd_retrieve_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 479 break; 480 case HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 481 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 482 hfp_hf_cmd_list_initital_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 483 break; 484 default: 485 done = 0; 486 break; 487 } 488 return done; 489 } 490 491 492 static int hfp_hf_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 493 if (hfp_connection->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 494 if (hfp_connection->ok_pending){ 495 return 0; 496 } 497 int done = 0; 498 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 499 hfp_connection->ok_pending = 1; 500 done = 1; 501 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, hfp_connection->enable_status_update_for_ag_indicators); 502 return done; 503 }; 504 if (hfp_connection->change_status_update_for_individual_ag_indicators){ 505 hfp_connection->ok_pending = 1; 506 done = 1; 507 hfp_hf_cmd_activate_status_update_for_ag_indicator(hfp_connection->rfcomm_cid, 508 hfp_connection->ag_indicators_status_update_bitmap, 509 hfp_connection->ag_indicators_nr); 510 return done; 511 } 512 513 switch (hfp_connection->hf_query_operator_state){ 514 case HFP_HF_QUERY_OPERATOR_SET_FORMAT: 515 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK; 516 hfp_connection->ok_pending = 1; 517 hfp_hf_cmd_query_operator_name_format(hfp_connection->rfcomm_cid); 518 return 1; 519 case HFP_HF_QUERY_OPERATOR_SEND_QUERY: 520 hfp_connection->hf_query_operator_state = HPF_HF_QUERY_OPERATOR_W4_RESULT; 521 hfp_connection->ok_pending = 1; 522 hfp_hf_cmd_query_operator_name(hfp_connection->rfcomm_cid); 523 return 1; 524 default: 525 break; 526 } 527 528 if (hfp_connection->enable_extended_audio_gateway_error_report){ 529 hfp_connection->ok_pending = 1; 530 done = 1; 531 hfp_hf_cmd_enable_extended_audio_gateway_error_report(hfp_connection->rfcomm_cid, hfp_connection->enable_extended_audio_gateway_error_report); 532 return done; 533 } 534 535 return done; 536 } 537 538 static int hfp_hf_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 539 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 540 return 0; 541 } 542 int done = 0; 543 544 if (hfp_connection->ok_pending == 1){ 545 return 0; 546 } 547 // voice recognition activated from AG 548 if (hfp_connection->command == HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION){ 549 switch(hfp_connection->vra_state_requested){ 550 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 551 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 552 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 553 // ignore AG command, continue to wait for OK 554 return 0; 555 556 default: 557 if (hfp_connection->ag_vra_msg_length > 0){ 558 hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection); 559 hfp_connection->ag_vra_msg_length = 0; 560 break; 561 } 562 switch(hfp_connection->ag_vra_state){ 563 case HFP_VOICE_RECOGNITION_STATE_AG_READY: 564 switch (hfp_connection->ag_vra_status){ 565 case 0: 566 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 567 break; 568 case 1: 569 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 570 break; 571 case 2: 572 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 573 break; 574 default: 575 break; 576 } 577 break; 578 default: 579 // state messages from AG 580 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 581 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 582 break; 583 } 584 break; 585 } 586 hfp_connection->command = HFP_CMD_NONE; 587 } 588 589 590 switch (hfp_connection->vra_state_requested){ 591 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 592 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 0); 593 if (done != 0){ 594 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 595 hfp_connection->ok_pending = 1; 596 } 597 return 1; 598 599 600 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 601 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 1); 602 if (done != 0){ 603 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 604 hfp_connection->ok_pending = 1; 605 return 1; 606 } 607 break; 608 609 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 610 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 2); 611 if (done != 0){ 612 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 613 hfp_connection->ok_pending = 1; 614 return 1; 615 } 616 break; 617 618 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 619 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 620 hfp_connection->vra_state_requested = hfp_connection->vra_state; 621 hfp_connection->activate_voice_recognition = false; 622 if (hfp_connection->activate_voice_recognition){ 623 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 624 hfp_hf_activate_voice_recognition(hfp_connection->acl_handle); 625 } else { 626 hfp_emit_voice_recognition_disabled(hfp_connection, ERROR_CODE_SUCCESS); 627 } 628 break; 629 630 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 631 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 632 hfp_connection->vra_state_requested = hfp_connection->vra_state; 633 hfp_connection->activate_voice_recognition = false; 634 if (hfp_connection->deactivate_voice_recognition){ 635 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 636 } else { 637 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 638 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 639 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 640 } else { 641 // postpone VRA event to simplify application logic 642 hfp_connection->emit_vra_enabled_after_audio_established = true; 643 } 644 } 645 break; 646 647 648 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 649 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 650 hfp_connection->vra_state_requested = hfp_connection->vra_state; 651 hfp_connection->activate_voice_recognition = false; 652 if (hfp_connection->deactivate_voice_recognition){ 653 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 654 } else { 655 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 656 } 657 break; 658 659 default: 660 break; 661 } 662 return done; 663 } 664 665 666 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 667 if (hfp_connection->ok_pending) return 0; 668 669 if (hfp_connection->trigger_codec_exchange){ 670 hfp_connection->trigger_codec_exchange = 0; 671 672 hfp_connection->ok_pending = 1; 673 hfp_hf_cmd_trigger_codec_connection_setup(hfp_connection->rfcomm_cid); 674 return 1; 675 } 676 677 if (hfp_connection->hf_send_codec_confirm){ 678 hfp_connection->hf_send_codec_confirm = false; 679 680 hfp_connection->ok_pending = 1; 681 hfp_hf_cmd_confirm_codec(hfp_connection->rfcomm_cid, hfp_connection->codec_confirmed); 682 return 1; 683 } 684 685 if (hfp_connection->hf_send_supported_codecs){ 686 hfp_connection->hf_send_supported_codecs = false; 687 688 hfp_connection->ok_pending = 1; 689 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 690 return 1; 691 } 692 693 return 0; 694 } 695 696 static int hfp_hf_run_for_audio_connection(hfp_connection_t * hfp_connection){ 697 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 698 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 699 700 if (hfp_connection->release_audio_connection){ 701 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 702 hfp_connection->release_audio_connection = 0; 703 gap_disconnect(hfp_connection->sco_handle); 704 return 1; 705 } 706 707 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 708 709 // run codecs exchange 710 int done = codecs_exchange_state_machine(hfp_connection); 711 if (done) return 1; 712 713 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 714 if (hfp_connection->establish_audio_connection){ 715 hfp_connection->state = HFP_W4_SCO_CONNECTED; 716 hfp_connection->establish_audio_connection = 0; 717 hfp_setup_synchronous_connection(hfp_connection); 718 return 1; 719 } 720 return 0; 721 } 722 723 724 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 725 726 if (hfp_connection->ok_pending) return 0; 727 728 if (hfp_connection->hf_answer_incoming_call){ 729 hfp_hf_cmd_ata(hfp_connection->rfcomm_cid); 730 hfp_connection->hf_answer_incoming_call = 0; 731 return 1; 732 } 733 return 0; 734 } 735 736 static void hfp_hf_run_for_context(hfp_connection_t * hfp_connection){ 737 738 btstack_assert(hfp_connection != NULL); 739 btstack_assert(hfp_connection->local_role == HFP_ROLE_HF); 740 741 // during SDP query, RFCOMM CID is not set 742 if (hfp_connection->rfcomm_cid == 0) return; 743 744 // emit postponed VRA event 745 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->emit_vra_enabled_after_audio_established){ 746 hfp_connection->emit_vra_enabled_after_audio_established = false; 747 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 748 } 749 750 // assert command could be sent 751 if (hci_can_send_command_packet_now() == 0) return; 752 753 #ifdef ENABLE_CC256X_ASSISTED_HFP 754 // WBS Disassociate 755 if (hfp_connection->cc256x_send_wbs_disassociate){ 756 hfp_connection->cc256x_send_wbs_disassociate = false; 757 hci_send_cmd(&hci_ti_wbs_disassociate); 758 return; 759 } 760 // Write Codec Config 761 if (hfp_connection->cc256x_send_write_codec_config){ 762 hfp_connection->cc256x_send_write_codec_config = false; 763 hfp_cc256x_write_codec_config(hfp_connection); 764 return; 765 } 766 // WBS Associate 767 if (hfp_connection->cc256x_send_wbs_associate){ 768 hfp_connection->cc256x_send_wbs_associate = false; 769 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 770 return; 771 } 772 #endif 773 #ifdef ENABLE_BCM_PCM_WBS 774 // Enable WBS 775 if (hfp_connection->bcm_send_enable_wbs){ 776 hfp_connection->bcm_send_enable_wbs = false; 777 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 778 return; 779 } 780 // Write I2S/PCM params 781 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 782 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 783 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 784 return; 785 } 786 // Disable WBS 787 if (hfp_connection->bcm_send_disable_wbs){ 788 hfp_connection->bcm_send_disable_wbs = false; 789 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 790 return; 791 } 792 #endif 793 #ifdef ENABLE_RTK_PCM_WBS 794 if (hfp_connection->rtk_send_sco_config){ 795 hfp_connection->rtk_send_sco_config = false; 796 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){ 797 log_info("RTK SCO: 16k + mSBC"); 798 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x00, 0x00, 0x41); 799 } else { 800 log_info("RTK SCO: 16k + CVSD"); 801 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x0c, 0x00, 0x01); 802 } 803 return; 804 } 805 #endif 806 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 807 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 808 hfp_finalize_connection_context(hfp_connection); 809 return; 810 } 811 #endif 812 813 if (hfp_connection->accept_sco){ 814 bool incoming_eSCO = hfp_connection->accept_sco == 2; 815 hfp_connection->accept_sco = 0; 816 // notify about codec selection if not done already 817 if (hfp_connection->negotiated_codec == 0){ 818 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 819 } 820 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 821 return; 822 } 823 824 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 825 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 826 return; 827 } 828 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection); 829 if (!done){ 830 done = hfp_hf_run_for_context_service_level_connection_queries(hfp_connection); 831 } 832 if (!done){ 833 done = hfp_hf_run_for_audio_connection(hfp_connection); 834 } 835 if (!done){ 836 done = hfp_hf_voice_recognition_state_machine(hfp_connection); 837 } 838 if (!done){ 839 done = call_setup_state_machine(hfp_connection); 840 } 841 842 // don't send a new command while ok still pending or SLC is not established 843 if (hfp_connection->ok_pending || (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED)){ 844 return; 845 } 846 847 if (hfp_connection->send_microphone_gain){ 848 hfp_connection->send_microphone_gain = 0; 849 hfp_connection->ok_pending = 1; 850 hfp_hf_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 851 return; 852 } 853 854 if (hfp_connection->send_speaker_gain){ 855 hfp_connection->send_speaker_gain = 0; 856 hfp_connection->ok_pending = 1; 857 hfp_hf_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 858 return; 859 } 860 861 if (hfp_connection->hf_deactivate_calling_line_notification){ 862 hfp_connection->hf_deactivate_calling_line_notification = 0; 863 hfp_connection->ok_pending = 1; 864 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 0); 865 return; 866 } 867 868 if (hfp_connection->hf_activate_calling_line_notification){ 869 hfp_connection->hf_activate_calling_line_notification = 0; 870 hfp_connection->ok_pending = 1; 871 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 1); 872 return; 873 } 874 875 if (hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction){ 876 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 0; 877 hfp_connection->response_pending_for_command = HFP_CMD_TURN_OFF_EC_AND_NR; 878 hfp_connection->ok_pending = 1; 879 hfp_hf_send_cmd_with_int(hfp_connection->rfcomm_cid, HFP_TURN_OFF_EC_AND_NR, 0); 880 return; 881 } 882 883 if (hfp_connection->hf_deactivate_call_waiting_notification){ 884 hfp_connection->hf_deactivate_call_waiting_notification = 0; 885 hfp_connection->ok_pending = 1; 886 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 0); 887 return; 888 } 889 890 if (hfp_connection->hf_activate_call_waiting_notification){ 891 hfp_connection->hf_activate_call_waiting_notification = 0; 892 hfp_connection->ok_pending = 1; 893 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 1); 894 return; 895 } 896 897 if (hfp_connection->hf_initiate_outgoing_call){ 898 hfp_connection->hf_initiate_outgoing_call = 0; 899 hfp_connection->ok_pending = 1; 900 hfp_hf_initiate_outgoing_call_cmd(hfp_connection->rfcomm_cid); 901 return; 902 } 903 904 if (hfp_connection->hf_initiate_memory_dialing){ 905 hfp_connection->hf_initiate_memory_dialing = 0; 906 hfp_connection->ok_pending = 1; 907 hfp_hf_send_memory_dial_cmd(hfp_connection->rfcomm_cid, hfp_connection->memory_id); 908 return; 909 } 910 911 if (hfp_connection->hf_initiate_redial_last_number){ 912 hfp_connection->hf_initiate_redial_last_number = 0; 913 hfp_connection->ok_pending = 1; 914 hfp_hf_send_redial_last_number_cmd(hfp_connection->rfcomm_cid); 915 return; 916 } 917 918 if (hfp_connection->hf_send_chup){ 919 hfp_connection->hf_send_chup = 0; 920 hfp_connection->ok_pending = 1; 921 hfp_hf_send_chup(hfp_connection->rfcomm_cid); 922 return; 923 } 924 925 if (hfp_connection->hf_send_chld_0){ 926 hfp_connection->hf_send_chld_0 = 0; 927 hfp_connection->ok_pending = 1; 928 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 0); 929 return; 930 } 931 932 if (hfp_connection->hf_send_chld_1){ 933 hfp_connection->hf_send_chld_1 = 0; 934 hfp_connection->ok_pending = 1; 935 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 1); 936 return; 937 } 938 939 if (hfp_connection->hf_send_chld_2){ 940 hfp_connection->hf_send_chld_2 = 0; 941 hfp_connection->ok_pending = 1; 942 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 2); 943 return; 944 } 945 946 if (hfp_connection->hf_send_chld_3){ 947 hfp_connection->hf_send_chld_3 = 0; 948 hfp_connection->ok_pending = 1; 949 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 3); 950 return; 951 } 952 953 if (hfp_connection->hf_send_chld_4){ 954 hfp_connection->hf_send_chld_4 = 0; 955 hfp_connection->ok_pending = 1; 956 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 4); 957 return; 958 } 959 960 if (hfp_connection->hf_send_chld_x){ 961 hfp_connection->hf_send_chld_x = 0; 962 hfp_connection->ok_pending = 1; 963 hfp_hf_send_chld(hfp_connection->rfcomm_cid, hfp_connection->hf_send_chld_x_index); 964 return; 965 } 966 967 if (hfp_connection->hf_send_dtmf_code){ 968 char code = hfp_connection->hf_send_dtmf_code; 969 hfp_connection->hf_send_dtmf_code = 0; 970 hfp_connection->ok_pending = 1; 971 hfp_hf_send_dtmf(hfp_connection->rfcomm_cid, code); 972 // notify client that dtmf was sent 973 char buffer[2]; 974 buffer[0] = code; 975 buffer[1] = 0; 976 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 977 return; 978 } 979 980 if (hfp_connection->hf_send_binp){ 981 hfp_connection->hf_send_binp = 0; 982 hfp_connection->ok_pending = 1; 983 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 984 return; 985 } 986 987 if (hfp_connection->hf_send_clcc){ 988 hfp_connection->hf_send_clcc = 0; 989 hfp_connection->ok_pending = 1; 990 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 991 return; 992 } 993 994 if (hfp_connection->hf_send_rrh){ 995 hfp_connection->hf_send_rrh = 0; 996 char buffer[20]; 997 switch (hfp_connection->hf_send_rrh_command){ 998 case '?': 999 snprintf(buffer, sizeof(buffer), "AT%s?\r", 1000 HFP_RESPONSE_AND_HOLD); 1001 buffer[sizeof(buffer) - 1] = 0; 1002 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1003 return; 1004 case '0': 1005 case '1': 1006 case '2': 1007 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", 1008 HFP_RESPONSE_AND_HOLD, 1009 hfp_connection->hf_send_rrh_command); 1010 buffer[sizeof(buffer) - 1] = 0; 1011 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1012 return; 1013 default: 1014 break; 1015 } 1016 return; 1017 } 1018 1019 if (hfp_connection->hf_send_cnum){ 1020 hfp_connection->hf_send_cnum = 0; 1021 char buffer[20]; 1022 snprintf(buffer, sizeof(buffer), "AT%s\r", 1023 HFP_SUBSCRIBER_NUMBER_INFORMATION); 1024 buffer[sizeof(buffer) - 1] = 0; 1025 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1026 return; 1027 } 1028 1029 // update HF indicators 1030 if (hfp_connection->generic_status_update_bitmap){ 1031 int i; 1032 for (i=0; i < hfp_hf_indicators_nr; i++){ 1033 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 1034 if (hfp_connection->generic_status_indicators[i].state){ 1035 hfp_connection->ok_pending = 1; 1036 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 1037 char buffer[30]; 1038 snprintf(buffer, sizeof(buffer), "AT%s=%u,%u\r", 1039 HFP_TRANSFER_HF_INDICATOR_STATUS, 1040 hfp_hf_indicators[i], 1041 (unsigned int)hfp_hf_indicators_value[i]); 1042 buffer[sizeof(buffer) - 1] = 0; 1043 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1044 } else { 1045 log_info("Not sending HF indicator %u as it is disabled", hfp_hf_indicators[i]); 1046 } 1047 return; 1048 } 1049 } 1050 } 1051 1052 if (done) return; 1053 // deal with disconnect 1054 switch (hfp_connection->state){ 1055 case HFP_W2_DISCONNECT_RFCOMM: 1056 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1057 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1058 break; 1059 1060 default: 1061 break; 1062 } 1063 } 1064 1065 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 1066 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 1067 1068 hfp_emit_slc_connection_event(hfp_connection->local_role, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 1069 1070 uint8_t i; 1071 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1072 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1073 } 1074 1075 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1076 hfp_connection->ag_indicators[i].status_changed = 0; 1077 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1078 } 1079 1080 // restore volume settings 1081 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 1082 hfp_connection->send_speaker_gain = 1; 1083 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 1084 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 1085 hfp_connection->send_microphone_gain = 1; 1086 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 1087 // enable all indicators 1088 for (i=0; i < hfp_hf_indicators_nr; i++){ 1089 hfp_connection->generic_status_indicators[i].uuid = hfp_hf_indicators[i]; 1090 hfp_connection->generic_status_indicators[i].state = 1; 1091 } 1092 } 1093 1094 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 1095 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_hf_codecs_nr, hfp_hf_codecs)){ 1096 // Codec supported, confirm 1097 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1098 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1099 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 1100 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 1101 1102 hfp_connection->hf_send_codec_confirm = true; 1103 } else { 1104 // Codec not supported, send supported codecs 1105 hfp_connection->codec_confirmed = 0; 1106 hfp_connection->suggested_codec = 0; 1107 hfp_connection->negotiated_codec = 0; 1108 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1109 1110 hfp_connection->hf_send_supported_codecs = true; 1111 } 1112 } 1113 1114 static bool hfp_hf_switch_on_ok_pending(hfp_connection_t *hfp_connection, uint8_t status){ 1115 bool event_emited = true; 1116 1117 switch (hfp_connection->response_pending_for_command){ 1118 case HFP_CMD_TURN_OFF_EC_AND_NR: 1119 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 1120 break; 1121 default: 1122 event_emited = false; 1123 1124 switch (hfp_connection->state){ 1125 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 1126 if (has_codec_negotiation_feature(hfp_connection)){ 1127 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 1128 break; 1129 } 1130 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1131 break; 1132 1133 case HFP_W4_NOTIFY_ON_CODECS: 1134 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1135 break; 1136 1137 case HFP_W4_RETRIEVE_INDICATORS: 1138 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 1139 break; 1140 1141 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 1142 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 1143 break; 1144 1145 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 1146 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 1147 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 1148 break; 1149 } 1150 if (has_hf_indicators_feature(hfp_connection)){ 1151 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1152 break; 1153 } 1154 hfp_ag_slc_established(hfp_connection); 1155 break; 1156 1157 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 1158 if (has_hf_indicators_feature(hfp_connection)){ 1159 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1160 break; 1161 } 1162 hfp_ag_slc_established(hfp_connection); 1163 break; 1164 1165 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 1166 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 1167 break; 1168 1169 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 1170 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 1171 break; 1172 1173 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 1174 hfp_ag_slc_established(hfp_connection); 1175 break; 1176 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1177 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 1178 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 1179 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1180 break; 1181 } 1182 1183 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 1184 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 1185 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1186 break; 1187 } 1188 1189 switch (hfp_connection->hf_query_operator_state){ 1190 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 1191 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1192 break; 1193 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 1194 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 1195 hfp_emit_network_operator_event(hfp_connection); 1196 break; 1197 default: 1198 break; 1199 } 1200 1201 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1202 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1203 break; 1204 } 1205 1206 switch (hfp_connection->codecs_state){ 1207 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1208 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1209 break; 1210 case HFP_CODECS_HF_CONFIRMED_CODEC: 1211 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1212 break; 1213 default: 1214 break; 1215 } 1216 hfp_hf_voice_recognition_state_machine(hfp_connection); 1217 break; 1218 case HFP_AUDIO_CONNECTION_ESTABLISHED: 1219 hfp_hf_voice_recognition_state_machine(hfp_connection); 1220 break; 1221 default: 1222 break; 1223 } 1224 break; 1225 } 1226 1227 // done 1228 hfp_connection->response_pending_for_command = HFP_CMD_NONE; 1229 hfp_connection->ok_pending = 0; 1230 hfp_connection->command = HFP_CMD_NONE; 1231 return event_emited; 1232 } 1233 1234 static bool hfp_is_ringing(hfp_callsetup_status_t callsetup_status){ 1235 switch (callsetup_status){ 1236 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1237 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1238 return true; 1239 default: 1240 return false; 1241 } 1242 } 1243 1244 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1245 uint16_t i; 1246 1247 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1248 if (hfp_connection->ag_indicators[i].status_changed) { 1249 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1250 hfp_callsetup_status_t new_hf_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1251 bool ringing_old = hfp_is_ringing(hfp_hf_callsetup_status); 1252 bool ringing_new = hfp_is_ringing(new_hf_callsetup_status); 1253 if (ringing_old != ringing_new){ 1254 if (ringing_new){ 1255 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGING); 1256 } else { 1257 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGING); 1258 } 1259 } 1260 hfp_hf_callsetup_status = new_hf_callsetup_status; 1261 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1262 hfp_hf_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1263 // avoid set but not used warning 1264 (void) hfp_hf_callheld_status; 1265 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1266 hfp_call_status_t new_hf_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1267 if (hfp_hf_call_status != new_hf_call_status){ 1268 if (new_hf_call_status == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 1269 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1270 } else { 1271 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1272 } 1273 } 1274 hfp_hf_call_status = new_hf_call_status; 1275 } 1276 hfp_connection->ag_indicators[i].status_changed = 0; 1277 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1278 break; 1279 } 1280 } 1281 } 1282 1283 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1284 int value; 1285 int i; 1286 bool event_emited; 1287 1288 // last argument is still in line_buffer 1289 1290 switch (hfp_connection->command){ 1291 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1292 hfp_connection->command = HFP_CMD_NONE; 1293 hfp_hf_emit_subscriber_information(hfp_connection, 0); 1294 break; 1295 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1296 hfp_connection->command = HFP_CMD_NONE; 1297 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1298 break; 1299 case HFP_CMD_LIST_CURRENT_CALLS: 1300 hfp_connection->command = HFP_CMD_NONE; 1301 hfp_hf_emit_enhanced_call_status(hfp_connection); 1302 break; 1303 case HFP_CMD_SET_SPEAKER_GAIN: 1304 hfp_connection->command = HFP_CMD_NONE; 1305 value = btstack_atoi((char*)hfp_connection->line_buffer); 1306 hfp_hf_speaker_gain = value; 1307 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1308 break; 1309 case HFP_CMD_SET_MICROPHONE_GAIN: 1310 hfp_connection->command = HFP_CMD_NONE; 1311 value = btstack_atoi((char*)hfp_connection->line_buffer); 1312 hfp_hf_microphone_gain = value; 1313 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1314 break; 1315 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1316 hfp_connection->command = HFP_CMD_NONE; 1317 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1318 break; 1319 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1320 hfp_connection->command = HFP_CMD_NONE; 1321 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION); 1322 break; 1323 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1324 hfp_connection->command = HFP_CMD_NONE; 1325 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION); 1326 break; 1327 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1328 hfp_connection->command = HFP_CMD_NONE; 1329 hfp_connection->ok_pending = 0; 1330 hfp_connection->extended_audio_gateway_error = 0; 1331 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1332 break; 1333 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 1334 break; 1335 case HFP_CMD_ERROR: 1336 switch (hfp_connection->state){ 1337 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1338 switch (hfp_connection->codecs_state){ 1339 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1340 hfp_reset_context_flags(hfp_connection); 1341 hfp_emit_sco_event(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 0, hfp_connection->remote_addr, hfp_connection->negotiated_codec); 1342 return; 1343 default: 1344 break; 1345 } 1346 break; 1347 default: 1348 break; 1349 } 1350 1351 // handle error response for voice activation (HF initiated) 1352 switch(hfp_connection->vra_state_requested){ 1353 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1354 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1355 break; 1356 default: 1357 if (hfp_connection->vra_state_requested == hfp_connection->vra_state){ 1358 break; 1359 } 1360 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1361 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1362 hfp_reset_context_flags(hfp_connection); 1363 return; 1364 } 1365 event_emited = hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1366 if (!event_emited){ 1367 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 1); 1368 } 1369 hfp_reset_context_flags(hfp_connection); 1370 break; 1371 1372 case HFP_CMD_OK: 1373 hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_SUCCESS); 1374 break; 1375 case HFP_CMD_RING: 1376 hfp_connection->command = HFP_CMD_NONE; 1377 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1378 break; 1379 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1380 hfp_connection->command = HFP_CMD_NONE; 1381 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1382 break; 1383 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1384 hfp_connection->command = HFP_CMD_NONE; 1385 // report status after SLC established 1386 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 1387 break; 1388 } 1389 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1390 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1391 } 1392 break; 1393 case HFP_CMD_AG_SUGGESTED_CODEC: 1394 hfp_connection->command = HFP_CMD_NONE; 1395 hfp_hf_handle_suggested_codec(hfp_connection); 1396 break; 1397 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1398 hfp_emit_event(hfp_connection, HFP_SUBEVENT_IN_BAND_RING_TONE, get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE)); 1399 default: 1400 break; 1401 } 1402 } 1403 1404 static int hfp_parser_is_end_of_line(uint8_t byte){ 1405 return (byte == '\n') || (byte == '\r'); 1406 } 1407 1408 static void hfp_hf_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 1409 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1410 if (size < 1) return; 1411 1412 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1413 #ifdef ENABLE_HFP_AT_MESSAGES 1414 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1415 #endif 1416 1417 // process messages byte-wise 1418 uint8_t pos; 1419 for (pos = 0; pos < size; pos++){ 1420 hfp_parse(hfp_connection, packet[pos], 1); 1421 // parse until end of line "\r" or "\n" 1422 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1423 hfp_hf_handle_rfcomm_command(hfp_connection); 1424 } 1425 } 1426 1427 static void hfp_hf_run(void){ 1428 btstack_linked_list_iterator_t it; 1429 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1430 while (btstack_linked_list_iterator_has_next(&it)){ 1431 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1432 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1433 hfp_hf_run_for_context(hfp_connection); 1434 } 1435 } 1436 1437 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1438 hfp_connection_t * hfp_connection; 1439 switch (packet_type){ 1440 case RFCOMM_DATA_PACKET: 1441 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1442 if (!hfp_connection) return; 1443 hfp_hf_handle_rfcomm_data(hfp_connection, packet, size); 1444 hfp_hf_run_for_context(hfp_connection); 1445 return; 1446 case HCI_EVENT_PACKET: 1447 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1448 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1449 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1450 return; 1451 } 1452 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1453 break; 1454 default: 1455 break; 1456 } 1457 hfp_hf_run(); 1458 } 1459 1460 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1461 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1462 hfp_hf_run(); 1463 } 1464 1465 static void hfp_hf_set_defaults(void){ 1466 hfp_hf_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1467 hfp_hf_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1468 hfp_hf_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1469 hfp_hf_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1470 hfp_hf_codecs_nr = 0; 1471 hfp_hf_speaker_gain = 9; 1472 hfp_hf_microphone_gain = 9; 1473 hfp_hf_indicators_nr = 0; 1474 } 1475 1476 uint8_t hfp_hf_init(uint16_t rfcomm_channel_nr){ 1477 uint8_t status = rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1478 if (status != ERROR_CODE_SUCCESS){ 1479 return status; 1480 } 1481 1482 hfp_init(); 1483 hfp_hf_set_defaults(); 1484 1485 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1486 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1487 1488 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1489 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1490 return ERROR_CODE_SUCCESS; 1491 } 1492 1493 void hfp_hf_deinit(void){ 1494 hfp_deinit(); 1495 hfp_hf_set_defaults(); 1496 1497 hfp_hf_callback = NULL; 1498 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1499 (void) memset(hfp_hf_phone_number, 0, sizeof(hfp_hf_phone_number)); 1500 } 1501 1502 void hfp_hf_init_codecs(int codecs_nr, const uint8_t * codecs){ 1503 btstack_assert(codecs_nr < HFP_MAX_NUM_CODECS); 1504 1505 hfp_hf_codecs_nr = codecs_nr; 1506 int i; 1507 for (i=0; i<codecs_nr; i++){ 1508 hfp_hf_codecs[i] = codecs[i]; 1509 } 1510 } 1511 1512 void hfp_hf_init_supported_features(uint32_t supported_features){ 1513 hfp_hf_supported_features = supported_features; 1514 } 1515 1516 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1517 btstack_assert(hfp_hf_indicators_nr < HFP_MAX_NUM_INDICATORS); 1518 1519 hfp_hf_indicators_nr = indicators_nr; 1520 int i; 1521 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 1522 hfp_hf_indicators[i] = indicators[i]; 1523 } 1524 } 1525 1526 uint8_t hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1527 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1528 } 1529 1530 uint8_t hfp_hf_release_service_level_connection(hci_con_handle_t acl_handle){ 1531 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1532 if (!hfp_connection){ 1533 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1534 } 1535 hfp_trigger_release_service_level_connection(hfp_connection); 1536 hfp_hf_run_for_context(hfp_connection); 1537 return ERROR_CODE_SUCCESS; 1538 } 1539 1540 static uint8_t hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1541 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1542 if (!hfp_connection) { 1543 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1544 } 1545 hfp_connection->enable_status_update_for_ag_indicators = enable; 1546 hfp_hf_run_for_context(hfp_connection); 1547 return ERROR_CODE_SUCCESS; 1548 } 1549 1550 uint8_t hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1551 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1552 } 1553 1554 uint8_t hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1555 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1556 } 1557 1558 // TODO: returned ERROR - wrong format 1559 uint8_t hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1560 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1561 if (!hfp_connection) { 1562 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1563 } 1564 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1565 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1566 hfp_hf_run_for_context(hfp_connection); 1567 return ERROR_CODE_SUCCESS; 1568 } 1569 1570 uint8_t hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1571 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1572 if (!hfp_connection) { 1573 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1574 } 1575 1576 switch (hfp_connection->hf_query_operator_state){ 1577 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1578 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1579 break; 1580 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1581 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1582 break; 1583 default: 1584 return ERROR_CODE_COMMAND_DISALLOWED; 1585 } 1586 hfp_hf_run_for_context(hfp_connection); 1587 return ERROR_CODE_SUCCESS; 1588 } 1589 1590 static uint8_t hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1591 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1592 if (!hfp_connection) { 1593 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1594 } 1595 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1596 hfp_hf_run_for_context(hfp_connection); 1597 return ERROR_CODE_SUCCESS; 1598 } 1599 1600 1601 uint8_t hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1602 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1603 } 1604 1605 uint8_t hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1606 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1607 } 1608 1609 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1610 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_hf_supported_features & (1 << HFP_HFSF_ESCO_S4)); 1611 } 1612 1613 uint8_t hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1614 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1615 if (!hfp_connection) { 1616 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1617 } 1618 1619 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1620 return ERROR_CODE_COMMAND_DISALLOWED; 1621 } 1622 1623 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 1624 return ERROR_CODE_COMMAND_DISALLOWED; 1625 } 1626 if (has_codec_negotiation_feature(hfp_connection)) { 1627 switch (hfp_connection->codecs_state) { 1628 case HFP_CODECS_W4_AG_COMMON_CODEC: 1629 break; 1630 case HFP_CODECS_EXCHANGED: 1631 hfp_connection->trigger_codec_exchange = 1; 1632 break; 1633 default: 1634 hfp_connection->codec_confirmed = 0; 1635 hfp_connection->suggested_codec = 0; 1636 hfp_connection->negotiated_codec = 0; 1637 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1638 hfp_connection->trigger_codec_exchange = 1; 1639 break; 1640 } 1641 } else { 1642 log_info("no codec negotiation feature, use CVSD"); 1643 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1644 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1645 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1646 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1647 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1648 hfp_connection->establish_audio_connection = 1; 1649 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1650 } 1651 1652 hfp_hf_run_for_context(hfp_connection); 1653 return ERROR_CODE_SUCCESS; 1654 } 1655 1656 uint8_t hfp_hf_release_audio_connection(hci_con_handle_t acl_handle){ 1657 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1658 if (!hfp_connection) { 1659 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1660 } 1661 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 1662 return ERROR_CODE_COMMAND_DISALLOWED; 1663 } 1664 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 1665 if (status == ERROR_CODE_SUCCESS){ 1666 hfp_hf_run_for_context(hfp_connection); 1667 } 1668 return ERROR_CODE_SUCCESS; 1669 } 1670 1671 uint8_t hfp_hf_answer_incoming_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 1677 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1678 hfp_connection->hf_answer_incoming_call = 1; 1679 hfp_hf_run_for_context(hfp_connection); 1680 } else { 1681 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_hf_callsetup_status); 1682 return ERROR_CODE_COMMAND_DISALLOWED; 1683 } 1684 return ERROR_CODE_SUCCESS; 1685 } 1686 1687 uint8_t hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1688 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1689 if (!hfp_connection) { 1690 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1691 } 1692 hfp_connection->hf_send_chup = 1; 1693 hfp_hf_run_for_context(hfp_connection); 1694 return ERROR_CODE_SUCCESS; 1695 } 1696 1697 uint8_t hfp_hf_reject_incoming_call(hci_con_handle_t acl_handle){ 1698 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1699 if (!hfp_connection) { 1700 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1701 } 1702 1703 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1704 hfp_connection->hf_send_chup = 1; 1705 hfp_hf_run_for_context(hfp_connection); 1706 } 1707 return ERROR_CODE_SUCCESS; 1708 } 1709 1710 uint8_t hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1711 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1712 if (!hfp_connection) { 1713 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1714 } 1715 1716 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1717 hfp_connection->hf_send_chld_0 = 1; 1718 hfp_hf_run_for_context(hfp_connection); 1719 } 1720 return ERROR_CODE_SUCCESS; 1721 } 1722 1723 uint8_t hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1724 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1725 if (!hfp_connection) { 1726 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1727 } 1728 1729 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1730 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1731 hfp_connection->hf_send_chld_1 = 1; 1732 hfp_hf_run_for_context(hfp_connection); 1733 } 1734 return ERROR_CODE_SUCCESS; 1735 } 1736 1737 uint8_t hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1738 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1739 if (!hfp_connection) { 1740 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1741 } 1742 1743 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1744 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1745 hfp_connection->hf_send_chld_2 = 1; 1746 hfp_hf_run_for_context(hfp_connection); 1747 } 1748 return ERROR_CODE_SUCCESS; 1749 } 1750 1751 uint8_t hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1752 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1753 if (!hfp_connection) { 1754 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1755 } 1756 1757 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1758 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1759 hfp_connection->hf_send_chld_3 = 1; 1760 hfp_hf_run_for_context(hfp_connection); 1761 } 1762 return ERROR_CODE_SUCCESS; 1763 } 1764 1765 uint8_t hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1766 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1767 if (!hfp_connection) { 1768 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1769 } 1770 1771 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1772 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1773 hfp_connection->hf_send_chld_4 = 1; 1774 hfp_hf_run_for_context(hfp_connection); 1775 } 1776 return ERROR_CODE_SUCCESS; 1777 } 1778 1779 uint8_t hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1780 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1781 if (!hfp_connection) { 1782 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1783 } 1784 1785 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1786 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1787 hfp_connection->hf_send_chld_x = 1; 1788 hfp_connection->hf_send_chld_x_index = 10 + index; 1789 hfp_hf_run_for_context(hfp_connection); 1790 } 1791 return ERROR_CODE_SUCCESS; 1792 } 1793 1794 uint8_t hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 1795 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1796 if (!hfp_connection) { 1797 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1798 } 1799 1800 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1801 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1802 hfp_connection->hf_send_chld_x = 1; 1803 hfp_connection->hf_send_chld_x_index = 20 + index; 1804 hfp_hf_run_for_context(hfp_connection); 1805 } 1806 return ERROR_CODE_SUCCESS; 1807 } 1808 1809 uint8_t hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 1810 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1811 if (!hfp_connection) { 1812 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1813 } 1814 1815 hfp_connection->hf_initiate_outgoing_call = 1; 1816 snprintf(hfp_hf_phone_number, sizeof(hfp_hf_phone_number), "%s", number); 1817 hfp_hf_run_for_context(hfp_connection); 1818 return ERROR_CODE_SUCCESS; 1819 } 1820 1821 uint8_t hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 1822 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1823 if (!hfp_connection) { 1824 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1825 } 1826 1827 hfp_connection->hf_initiate_memory_dialing = 1; 1828 hfp_connection->memory_id = memory_id; 1829 1830 hfp_hf_run_for_context(hfp_connection); 1831 return ERROR_CODE_SUCCESS; 1832 } 1833 1834 uint8_t hfp_hf_redial_last_number(hci_con_handle_t acl_handle){ 1835 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1836 if (!hfp_connection) { 1837 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1838 } 1839 1840 hfp_connection->hf_initiate_redial_last_number = 1; 1841 hfp_hf_run_for_context(hfp_connection); 1842 return ERROR_CODE_SUCCESS; 1843 } 1844 1845 uint8_t hfp_hf_activate_call_waiting_notification(hci_con_handle_t acl_handle){ 1846 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1847 if (!hfp_connection) { 1848 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1849 } 1850 1851 hfp_connection->hf_activate_call_waiting_notification = 1; 1852 hfp_hf_run_for_context(hfp_connection); 1853 return ERROR_CODE_SUCCESS; 1854 } 1855 1856 1857 uint8_t hfp_hf_deactivate_call_waiting_notification(hci_con_handle_t acl_handle){ 1858 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1859 if (!hfp_connection) { 1860 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1861 } 1862 1863 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1864 hfp_hf_run_for_context(hfp_connection); 1865 return ERROR_CODE_SUCCESS; 1866 } 1867 1868 1869 uint8_t hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1870 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1871 if (!hfp_connection) { 1872 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1873 } 1874 1875 hfp_connection->hf_activate_calling_line_notification = 1; 1876 hfp_hf_run_for_context(hfp_connection); 1877 return ERROR_CODE_SUCCESS; 1878 } 1879 1880 uint8_t hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1881 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1882 if (!hfp_connection) { 1883 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1884 } 1885 1886 hfp_connection->hf_deactivate_calling_line_notification = 1; 1887 hfp_hf_run_for_context(hfp_connection); 1888 return ERROR_CODE_SUCCESS; 1889 } 1890 1891 static bool hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection_t * hfp_connection){ 1892 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_EC_NR_FUNCTION); 1893 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_EC_NR_FUNCTION); 1894 return hf && ag; 1895 } 1896 1897 uint8_t hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1898 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1899 if (!hfp_connection) { 1900 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1901 } 1902 if (!hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection)){ 1903 return ERROR_CODE_COMMAND_DISALLOWED; 1904 } 1905 1906 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1907 hfp_hf_run_for_context(hfp_connection); 1908 return ERROR_CODE_SUCCESS; 1909 } 1910 1911 uint8_t hfp_hf_activate_voice_recognition(hci_con_handle_t acl_handle){ 1912 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1913 if (!hfp_connection) { 1914 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1915 } 1916 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1917 return ERROR_CODE_COMMAND_DISALLOWED; 1918 } 1919 1920 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1921 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1922 if (!enhanced_vra_supported && !legacy_vra_supported){ 1923 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1924 } 1925 1926 switch (hfp_connection->vra_state){ 1927 case HFP_VRA_VOICE_RECOGNITION_OFF: 1928 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1929 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 1930 hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 1931 break; 1932 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1933 hfp_connection->activate_voice_recognition = true; 1934 break; 1935 default: 1936 return ERROR_CODE_COMMAND_DISALLOWED; 1937 } 1938 1939 hfp_hf_run_for_context(hfp_connection); 1940 return ERROR_CODE_SUCCESS; 1941 } 1942 1943 uint8_t hfp_hf_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 1944 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1945 if (!hfp_connection) { 1946 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1947 } 1948 1949 if (hfp_connection->emit_vra_enabled_after_audio_established){ 1950 return ERROR_CODE_COMMAND_DISALLOWED; 1951 } 1952 1953 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 1954 return ERROR_CODE_COMMAND_DISALLOWED; 1955 } 1956 1957 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1958 if (!enhanced_vra_supported){ 1959 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1960 } 1961 1962 switch (hfp_connection->vra_state){ 1963 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 1964 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1965 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 1966 break; 1967 default: 1968 return ERROR_CODE_COMMAND_DISALLOWED; 1969 } 1970 1971 hfp_hf_run_for_context(hfp_connection); 1972 return ERROR_CODE_SUCCESS; 1973 } 1974 1975 1976 uint8_t hfp_hf_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 1977 // return deactivate_voice_recognition(acl_handle, false); 1978 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1979 if (!hfp_connection) { 1980 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1981 } 1982 1983 if (hfp_connection->emit_vra_enabled_after_audio_established){ 1984 return ERROR_CODE_COMMAND_DISALLOWED; 1985 } 1986 1987 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 1988 hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1989 return ERROR_CODE_COMMAND_DISALLOWED; 1990 } 1991 1992 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1993 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1994 if (!enhanced_vra_supported && !legacy_vra_supported){ 1995 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1996 } 1997 1998 switch (hfp_connection->vra_state){ 1999 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 2000 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 2001 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2002 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2003 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2004 break; 2005 2006 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 2007 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2008 hfp_connection->deactivate_voice_recognition = true; 2009 break; 2010 2011 case HFP_VRA_VOICE_RECOGNITION_OFF: 2012 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 2013 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 2014 default: 2015 return ERROR_CODE_COMMAND_DISALLOWED; 2016 } 2017 2018 hfp_hf_run_for_context(hfp_connection); 2019 return ERROR_CODE_SUCCESS; 2020 } 2021 2022 uint8_t hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2023 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2024 if (!hfp_connection) { 2025 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2026 } 2027 2028 if (hfp_connection->microphone_gain == gain) { 2029 return ERROR_CODE_SUCCESS; 2030 } 2031 2032 if ((gain < 0) || (gain > 15)){ 2033 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2034 return ERROR_CODE_COMMAND_DISALLOWED; 2035 } 2036 2037 hfp_connection->microphone_gain = gain; 2038 hfp_connection->send_microphone_gain = 1; 2039 hfp_hf_run_for_context(hfp_connection); 2040 return ERROR_CODE_SUCCESS; 2041 } 2042 2043 uint8_t hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2044 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2045 if (!hfp_connection) { 2046 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2047 } 2048 2049 if (hfp_connection->speaker_gain == gain){ 2050 return ERROR_CODE_SUCCESS; 2051 } 2052 2053 if ((gain < 0) || (gain > 15)){ 2054 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2055 return ERROR_CODE_COMMAND_DISALLOWED; 2056 } 2057 2058 hfp_connection->speaker_gain = gain; 2059 hfp_connection->send_speaker_gain = 1; 2060 hfp_hf_run_for_context(hfp_connection); 2061 return ERROR_CODE_SUCCESS; 2062 } 2063 2064 uint8_t hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 2065 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2066 if (!hfp_connection) { 2067 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2068 } 2069 hfp_connection->hf_send_dtmf_code = code; 2070 hfp_hf_run_for_context(hfp_connection); 2071 return ERROR_CODE_SUCCESS; 2072 } 2073 2074 uint8_t hfp_hf_request_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2075 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2076 if (!hfp_connection) { 2077 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2078 } 2079 hfp_connection->hf_send_binp = 1; 2080 hfp_hf_run_for_context(hfp_connection); 2081 return ERROR_CODE_SUCCESS; 2082 } 2083 2084 uint8_t hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 2085 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2086 if (!hfp_connection) { 2087 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2088 } 2089 hfp_connection->hf_send_clcc = 1; 2090 hfp_hf_run_for_context(hfp_connection); 2091 return ERROR_CODE_SUCCESS; 2092 } 2093 2094 2095 uint8_t hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 2096 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2097 if (!hfp_connection) { 2098 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2099 } 2100 hfp_connection->hf_send_rrh = 1; 2101 hfp_connection->hf_send_rrh_command = '?'; 2102 hfp_hf_run_for_context(hfp_connection); 2103 return ERROR_CODE_SUCCESS; 2104 } 2105 2106 uint8_t hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 2107 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2108 if (!hfp_connection) { 2109 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2110 } 2111 hfp_connection->hf_send_rrh = 1; 2112 hfp_connection->hf_send_rrh_command = '0'; 2113 hfp_hf_run_for_context(hfp_connection); 2114 return ERROR_CODE_SUCCESS; 2115 } 2116 2117 uint8_t hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 2118 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2119 if (!hfp_connection) { 2120 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2121 } 2122 hfp_connection->hf_send_rrh = 1; 2123 hfp_connection->hf_send_rrh_command = '1'; 2124 hfp_hf_run_for_context(hfp_connection); 2125 return ERROR_CODE_SUCCESS; 2126 } 2127 2128 uint8_t hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 2129 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2130 if (!hfp_connection) { 2131 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2132 } 2133 hfp_connection->hf_send_rrh = 1; 2134 hfp_connection->hf_send_rrh_command = '2'; 2135 hfp_hf_run_for_context(hfp_connection); 2136 return ERROR_CODE_SUCCESS; 2137 } 2138 2139 uint8_t hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 2140 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2141 if (!hfp_connection) { 2142 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2143 } 2144 hfp_connection->hf_send_cnum = 1; 2145 hfp_hf_run_for_context(hfp_connection); 2146 return ERROR_CODE_SUCCESS; 2147 } 2148 2149 uint8_t hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 2150 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2151 if (!hfp_connection) { 2152 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2153 } 2154 // find index for assigned number 2155 int i; 2156 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 2157 if (hfp_hf_indicators[i] == assigned_number){ 2158 // set value 2159 hfp_hf_indicators_value[i] = value; 2160 // mark for update 2161 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 2162 hfp_connection->generic_status_update_bitmap |= (1<<i); 2163 // send update 2164 hfp_hf_run_for_context(hfp_connection); 2165 } 2166 return ERROR_CODE_SUCCESS; 2167 } 2168 } 2169 return ERROR_CODE_SUCCESS; 2170 } 2171 2172 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 2173 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2174 if (!hfp_connection) { 2175 return 0; 2176 } 2177 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 2178 } 2179 2180 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){ 2181 if (!name){ 2182 name = hfp_hf_default_service_name; 2183 } 2184 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 2185 2186 // Construct SupportedFeatures for SDP bitmap: 2187 // 2188 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2189 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2190 // 2191 // Wide band speech (bit 5) requires Codec negotiation 2192 // 2193 uint16_t sdp_features = supported_features & 0x1f; 2194 if ( (wide_band_speech != 0) && (supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION))){ 2195 sdp_features |= 1 << 5; 2196 } 2197 2198 if (supported_features & (1 << HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2199 sdp_features |= 1 << 6; 2200 } 2201 2202 if (supported_features & (1 << HFP_HFSF_VOICE_RECOGNITION_TEXT)){ 2203 sdp_features |= 1 << 7; 2204 } 2205 2206 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2207 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2208 } 2209 2210 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 2211 btstack_assert(callback != NULL); 2212 2213 hfp_hf_callback = callback; 2214 hfp_set_hf_callback(callback); 2215 } 2216