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; 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; 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 uint16_t bnip_number_len = btstack_min(strlen(hfp_connection->bnip_number), sizeof(hfp_connection->bnip_number)-1); 183 uint8_t event[11 + sizeof(hfp_connection->bnip_number)]; 184 event[0] = HCI_EVENT_HFP_META; 185 event[1] = 10 + bnip_number_len; 186 event[2] = HFP_SUBEVENT_ENHANCED_CALL_STATUS; 187 little_endian_store_16(event, 3, hfp_connection->acl_handle); 188 event[4] = hfp_connection->clcc_idx; 189 event[5] = hfp_connection->clcc_dir; 190 event[6] = hfp_connection->clcc_status; 191 event[7] = hfp_connection->clcc_mode; 192 event[8] = hfp_connection->clcc_mpty; 193 event[9] = hfp_connection->bnip_type; 194 memcpy(&event[10], hfp_connection->bnip_number, bnip_number_len); 195 event[11+bnip_number_len] = 0; 196 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 12+bnip_number_len); 197 } 198 199 static void hfp_emit_ag_indicator_mapping_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 200 if (hfp_hf_callback == NULL) return; 201 uint8_t event[8 + HFP_MAX_INDICATOR_DESC_SIZE]; 202 uint16_t indicator_len = btstack_min(strlen(indicator->name), HFP_MAX_INDICATOR_DESC_SIZE-1); 203 event[0] = HCI_EVENT_HFP_META; 204 event[1] = 7 + indicator_len; 205 event[2] = HFP_SUBEVENT_AG_INDICATOR_MAPPING; 206 little_endian_store_16(event, 3, hfp_connection->acl_handle); 207 event[5] = indicator->index; 208 event[6] = indicator->min_range; 209 event[7] = indicator->max_range; 210 memcpy(&event[8], indicator->name, indicator_len); 211 event[8+indicator_len] = 0; 212 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 9 + indicator_len); 213 } 214 215 static void hfp_emit_ag_indicator_status_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 216 if (hfp_hf_callback == NULL) return; 217 uint8_t event[12+HFP_MAX_INDICATOR_DESC_SIZE]; 218 uint16_t indicator_len = btstack_min(strlen(indicator->name), HFP_MAX_INDICATOR_DESC_SIZE-1); 219 event[0] = HCI_EVENT_HFP_META; 220 event[1] = 11 + indicator_len; 221 event[2] = HFP_SUBEVENT_AG_INDICATOR_STATUS_CHANGED; 222 little_endian_store_16(event, 3, hfp_connection->acl_handle); 223 event[5] = indicator->index; 224 event[6] = indicator->status; 225 event[7] = indicator->min_range; 226 event[8] = indicator->max_range; 227 event[9] = indicator->mandatory; 228 event[10] = indicator->enabled; 229 event[11] = indicator->status_changed; 230 memcpy(&event[12], indicator->name, indicator_len); 231 event[12+indicator_len] = 0; 232 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 13 + indicator_len); 233 } 234 235 static void hfp_emit_network_operator_event(const hfp_connection_t * hfp_connection){ 236 if (hfp_hf_callback == NULL) return; 237 uint16_t operator_len = btstack_min(strlen(hfp_connection->network_operator.name), HFP_MAX_NETWORK_OPERATOR_NAME_SIZE-1); 238 uint8_t event[7+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE]; 239 event[0] = HCI_EVENT_HFP_META; 240 event[1] = sizeof(event) - 2; 241 event[2] = 6 + operator_len; 242 little_endian_store_16(event, 3, hfp_connection->acl_handle); 243 event[5] = hfp_connection->network_operator.mode; 244 event[6] = hfp_connection->network_operator.format; 245 memcpy(&event[7], hfp_connection->network_operator.name, operator_len); 246 event[7+operator_len] = 0; 247 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 8 + operator_len); 248 } 249 250 251 static void hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection_t * hfp_connection){ 252 btstack_assert(hfp_connection != NULL); 253 uint8_t event[HFP_MAX_VR_TEXT_SIZE + 11]; 254 int pos = 0; 255 event[pos++] = HCI_EVENT_HFP_META; 256 event[pos++] = sizeof(event) - 2; 257 event[pos++] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE; 258 little_endian_store_16(event, pos, hfp_connection->acl_handle); 259 pos += 2; 260 little_endian_store_16(event, pos, hfp_connection->ag_msg.text_id); 261 pos += 2; 262 event[pos++] = hfp_connection->ag_msg.text_type; 263 event[pos++] = hfp_connection->ag_msg.text_operation; 264 265 // length, zero ending is already in message 266 uint8_t * value = &hfp_connection->line_buffer[0]; 267 uint16_t value_length = hfp_connection->ag_vra_msg_length; 268 269 little_endian_store_16(event, pos, value_length); 270 pos += 2; 271 memcpy(&event[pos], value, value_length); 272 pos += value_length; 273 274 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 275 } 276 277 /* send commands */ 278 279 static inline int hfp_hf_send_cmd(uint16_t cid, const char * cmd){ 280 char buffer[20]; 281 snprintf(buffer, sizeof(buffer), "AT%s\r", cmd); 282 return send_str_over_rfcomm(cid, buffer); 283 } 284 285 static inline int hfp_hf_send_cmd_with_mark(uint16_t cid, const char * cmd, const char * mark){ 286 char buffer[20]; 287 snprintf(buffer, sizeof(buffer), "AT%s%s\r", cmd, mark); 288 return send_str_over_rfcomm(cid, buffer); 289 } 290 291 static inline int hfp_hf_send_cmd_with_int(uint16_t cid, const char * cmd, uint16_t value){ 292 char buffer[40]; 293 snprintf(buffer, sizeof(buffer), "AT%s=%d\r", cmd, value); 294 return send_str_over_rfcomm(cid, buffer); 295 } 296 297 static int hfp_hf_cmd_notify_on_codecs(uint16_t cid){ 298 char buffer[30]; 299 const int size = sizeof(buffer); 300 int offset = snprintf(buffer, size, "AT%s=", HFP_AVAILABLE_CODECS); 301 offset += join(buffer+offset, size-offset, hfp_hf_codecs, hfp_hf_codecs_nr); 302 offset += snprintf(buffer+offset, size-offset, "\r"); 303 return send_str_over_rfcomm(cid, buffer); 304 } 305 306 static int hfp_hf_cmd_activate_status_update_for_ag_indicator(uint16_t cid, uint32_t indicators_status, int indicators_nr){ 307 char buffer[50]; 308 const int size = sizeof(buffer); 309 int offset = snprintf(buffer, size, "AT%s=", HFP_UPDATE_ENABLE_STATUS_FOR_INDIVIDUAL_AG_INDICATORS); 310 offset += join_bitmap(buffer+offset, size-offset, indicators_status, indicators_nr); 311 offset += snprintf(buffer+offset, size-offset, "\r"); 312 return send_str_over_rfcomm(cid, buffer); 313 } 314 315 static int hfp_hf_cmd_list_supported_generic_status_indicators(uint16_t cid){ 316 char buffer[30]; 317 const int size = sizeof(buffer); 318 int offset = snprintf(buffer, size, "AT%s=", HFP_GENERIC_STATUS_INDICATOR); 319 offset += join(buffer+offset, size-offset, hfp_hf_indicators, hfp_hf_indicators_nr); 320 offset += snprintf(buffer+offset, size-offset, "\r"); 321 return send_str_over_rfcomm(cid, buffer); 322 } 323 324 static int hfp_hf_cmd_activate_status_update_for_all_ag_indicators(uint16_t cid, uint8_t activate){ 325 char buffer[20]; 326 snprintf(buffer, sizeof(buffer), "AT%s=3,0,0,%d\r", HFP_ENABLE_STATUS_UPDATE_FOR_AG_INDICATORS, activate); 327 return send_str_over_rfcomm(cid, buffer); 328 } 329 330 static int hfp_hf_initiate_outgoing_call_cmd(uint16_t cid){ 331 char buffer[40]; 332 snprintf(buffer, sizeof(buffer), "%s%s;\r", HFP_CALL_PHONE_NUMBER, hfp_hf_phone_number); 333 return send_str_over_rfcomm(cid, buffer); 334 } 335 336 static int hfp_hf_send_memory_dial_cmd(uint16_t cid, int memory_id){ 337 char buffer[40]; 338 snprintf(buffer, sizeof(buffer), "%s>%d;\r", HFP_CALL_PHONE_NUMBER, memory_id); 339 return send_str_over_rfcomm(cid, buffer); 340 } 341 342 static int hfp_hf_send_chld(uint16_t cid, unsigned int number){ 343 char buffer[40]; 344 snprintf(buffer, sizeof(buffer), "AT%s=%u\r", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, number); 345 return send_str_over_rfcomm(cid, buffer); 346 } 347 348 static int hfp_hf_send_dtmf(uint16_t cid, char code){ 349 char buffer[20]; 350 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", HFP_TRANSMIT_DTMF_CODES, code); 351 return send_str_over_rfcomm(cid, buffer); 352 } 353 354 static int hfp_hf_cmd_ata(uint16_t cid){ 355 return send_str_over_rfcomm(cid, (char *) "ATA\r"); 356 } 357 358 static int hfp_hf_cmd_exchange_supported_features(uint16_t cid){ 359 return hfp_hf_send_cmd_with_int(cid, HFP_SUPPORTED_FEATURES, hfp_hf_supported_features); 360 } 361 362 static int hfp_hf_cmd_retrieve_indicators(uint16_t cid){ 363 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "=?"); 364 } 365 366 static int hfp_hf_cmd_retrieve_indicators_status(uint16_t cid){ 367 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "?"); 368 } 369 370 static int hfp_hf_cmd_retrieve_can_hold_call(uint16_t cid){ 371 return hfp_hf_send_cmd_with_mark(cid, HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, "=?"); 372 } 373 374 static int hfp_hf_cmd_retrieve_supported_generic_status_indicators(uint16_t cid){ 375 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "=?"); 376 } 377 378 static int hfp_hf_cmd_list_initital_supported_generic_status_indicators(uint16_t cid){ 379 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "?"); 380 } 381 382 static int hfp_hf_cmd_query_operator_name_format(uint16_t cid){ 383 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "=3,0"); 384 } 385 386 static int hfp_hf_cmd_query_operator_name(uint16_t cid){ 387 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "?"); 388 } 389 390 static int hfp_hf_cmd_trigger_codec_connection_setup(uint16_t cid){ 391 return hfp_hf_send_cmd(cid, HFP_TRIGGER_CODEC_CONNECTION_SETUP); 392 } 393 394 static int hfp_hf_set_microphone_gain_cmd(uint16_t cid, int gain){ 395 return hfp_hf_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 396 } 397 398 static int hfp_hf_set_speaker_gain_cmd(uint16_t cid, int gain){ 399 return hfp_hf_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 400 } 401 402 static int hfp_hf_set_calling_line_notification_cmd(uint16_t cid, uint8_t activate){ 403 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CLIP, activate); 404 } 405 406 static int hfp_hf_set_voice_recognition_notification_cmd(uint16_t cid, uint8_t activate){ 407 return hfp_hf_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate); 408 } 409 410 static int hfp_hf_set_call_waiting_notification_cmd(uint16_t cid, uint8_t activate){ 411 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CALL_WAITING_NOTIFICATION, activate); 412 } 413 414 static int hfp_hf_cmd_confirm_codec(uint16_t cid, uint8_t codec){ 415 return hfp_hf_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 416 } 417 418 static int hfp_hf_cmd_enable_extended_audio_gateway_error_report(uint16_t cid, uint8_t enable){ 419 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR, enable); 420 } 421 422 static int hfp_hf_send_redial_last_number_cmd(uint16_t cid){ 423 return hfp_hf_send_cmd(cid, HFP_REDIAL_LAST_NUMBER); 424 } 425 426 static int hfp_hf_send_chup(uint16_t cid){ 427 return hfp_hf_send_cmd(cid, HFP_HANG_UP_CALL); 428 } 429 430 static int hfp_hf_send_binp(uint16_t cid){ 431 return hfp_hf_send_cmd_with_mark(cid, HFP_PHONE_NUMBER_FOR_VOICE_TAG, "=1"); 432 } 433 434 static int hfp_hf_send_clcc(uint16_t cid){ 435 return hfp_hf_send_cmd(cid, HFP_LIST_CURRENT_CALLS); 436 } 437 438 /* state machines */ 439 440 static int hfp_hf_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 441 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 442 if (hfp_connection->ok_pending) return 0; 443 int done = 1; 444 log_info("hfp_hf_run_for_context_service_level_connection state %d\n", hfp_connection->state); 445 switch (hfp_connection->state){ 446 case HFP_EXCHANGE_SUPPORTED_FEATURES: 447 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_hf_codecs, &hfp_hf_codecs_nr); 448 hfp_connection->state = HFP_W4_EXCHANGE_SUPPORTED_FEATURES; 449 hfp_hf_cmd_exchange_supported_features(hfp_connection->rfcomm_cid); 450 break; 451 case HFP_NOTIFY_ON_CODECS: 452 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 453 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 454 break; 455 case HFP_RETRIEVE_INDICATORS: 456 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 457 hfp_hf_cmd_retrieve_indicators(hfp_connection->rfcomm_cid); 458 break; 459 case HFP_RETRIEVE_INDICATORS_STATUS: 460 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 461 hfp_hf_cmd_retrieve_indicators_status(hfp_connection->rfcomm_cid); 462 break; 463 case HFP_ENABLE_INDICATORS_STATUS_UPDATE: 464 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 465 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, 1); 466 break; 467 case HFP_RETRIEVE_CAN_HOLD_CALL: 468 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 469 hfp_hf_cmd_retrieve_can_hold_call(hfp_connection->rfcomm_cid); 470 break; 471 case HFP_LIST_GENERIC_STATUS_INDICATORS: 472 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 473 hfp_hf_cmd_list_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 474 break; 475 case HFP_RETRIEVE_GENERIC_STATUS_INDICATORS: 476 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 477 hfp_hf_cmd_retrieve_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 478 break; 479 case HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 480 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 481 hfp_hf_cmd_list_initital_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 482 break; 483 default: 484 done = 0; 485 break; 486 } 487 return done; 488 } 489 490 491 static int hfp_hf_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 492 if (hfp_connection->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 493 if (hfp_connection->ok_pending){ 494 return 0; 495 } 496 int done = 0; 497 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 498 hfp_connection->ok_pending = 1; 499 done = 1; 500 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, hfp_connection->enable_status_update_for_ag_indicators); 501 return done; 502 }; 503 if (hfp_connection->change_status_update_for_individual_ag_indicators){ 504 hfp_connection->ok_pending = 1; 505 done = 1; 506 hfp_hf_cmd_activate_status_update_for_ag_indicator(hfp_connection->rfcomm_cid, 507 hfp_connection->ag_indicators_status_update_bitmap, 508 hfp_connection->ag_indicators_nr); 509 return done; 510 } 511 512 switch (hfp_connection->hf_query_operator_state){ 513 case HFP_HF_QUERY_OPERATOR_SET_FORMAT: 514 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK; 515 hfp_connection->ok_pending = 1; 516 hfp_hf_cmd_query_operator_name_format(hfp_connection->rfcomm_cid); 517 return 1; 518 case HFP_HF_QUERY_OPERATOR_SEND_QUERY: 519 hfp_connection->hf_query_operator_state = HPF_HF_QUERY_OPERATOR_W4_RESULT; 520 hfp_connection->ok_pending = 1; 521 hfp_hf_cmd_query_operator_name(hfp_connection->rfcomm_cid); 522 return 1; 523 default: 524 break; 525 } 526 527 if (hfp_connection->enable_extended_audio_gateway_error_report){ 528 hfp_connection->ok_pending = 1; 529 done = 1; 530 hfp_hf_cmd_enable_extended_audio_gateway_error_report(hfp_connection->rfcomm_cid, hfp_connection->enable_extended_audio_gateway_error_report); 531 return done; 532 } 533 534 return done; 535 } 536 537 static int hfp_hf_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 538 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 539 return 0; 540 } 541 int done = 0; 542 543 if (hfp_connection->ok_pending == 1){ 544 return 0; 545 } 546 // voice recognition activated from AG 547 if (hfp_connection->command == HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION){ 548 switch(hfp_connection->vra_state_requested){ 549 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 550 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 551 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 552 // ignore AG command, continue to wait for OK 553 return 0; 554 555 default: 556 if (hfp_connection->ag_vra_msg_length > 0){ 557 hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection); 558 hfp_connection->ag_vra_msg_length = 0; 559 break; 560 } 561 switch(hfp_connection->ag_vra_state){ 562 case HFP_VOICE_RECOGNITION_STATE_AG_READY: 563 switch (hfp_connection->ag_vra_status){ 564 case 0: 565 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 566 break; 567 case 1: 568 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 569 break; 570 case 2: 571 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 572 break; 573 default: 574 break; 575 } 576 break; 577 default: 578 // state messages from AG 579 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 580 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 581 break; 582 } 583 break; 584 } 585 hfp_connection->command = HFP_CMD_NONE; 586 } 587 588 589 switch (hfp_connection->vra_state_requested){ 590 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 591 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 0); 592 if (done != 0){ 593 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 594 hfp_connection->ok_pending = 1; 595 } 596 return 1; 597 598 599 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 600 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 1); 601 if (done != 0){ 602 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 603 hfp_connection->ok_pending = 1; 604 return 1; 605 } 606 break; 607 608 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 609 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 2); 610 if (done != 0){ 611 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 612 hfp_connection->ok_pending = 1; 613 return 1; 614 } 615 break; 616 617 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 618 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 619 hfp_connection->vra_state_requested = hfp_connection->vra_state; 620 hfp_connection->activate_voice_recognition = false; 621 if (hfp_connection->activate_voice_recognition){ 622 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 623 hfp_hf_activate_voice_recognition(hfp_connection->acl_handle); 624 } else { 625 hfp_emit_voice_recognition_disabled(hfp_connection, ERROR_CODE_SUCCESS); 626 } 627 break; 628 629 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 630 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 631 hfp_connection->vra_state_requested = hfp_connection->vra_state; 632 hfp_connection->activate_voice_recognition = false; 633 if (hfp_connection->deactivate_voice_recognition){ 634 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 635 } else { 636 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 637 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 638 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 639 } else { 640 // postpone VRA event to simplify application logic 641 hfp_connection->emit_vra_enabled_after_audio_established = true; 642 } 643 } 644 break; 645 646 647 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 648 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 649 hfp_connection->vra_state_requested = hfp_connection->vra_state; 650 hfp_connection->activate_voice_recognition = false; 651 if (hfp_connection->deactivate_voice_recognition){ 652 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 653 } else { 654 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 655 } 656 break; 657 658 default: 659 break; 660 } 661 return done; 662 } 663 664 665 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 666 if (hfp_connection->ok_pending) return 0; 667 668 if (hfp_connection->trigger_codec_exchange){ 669 hfp_connection->trigger_codec_exchange = 0; 670 671 hfp_connection->ok_pending = 1; 672 hfp_hf_cmd_trigger_codec_connection_setup(hfp_connection->rfcomm_cid); 673 return 1; 674 } 675 676 if (hfp_connection->hf_send_codec_confirm){ 677 hfp_connection->hf_send_codec_confirm = false; 678 679 hfp_connection->ok_pending = 1; 680 hfp_hf_cmd_confirm_codec(hfp_connection->rfcomm_cid, hfp_connection->codec_confirmed); 681 return 1; 682 } 683 684 if (hfp_connection->hf_send_supported_codecs){ 685 hfp_connection->hf_send_supported_codecs = false; 686 687 hfp_connection->ok_pending = 1; 688 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 689 return 1; 690 } 691 692 return 0; 693 } 694 695 static int hfp_hf_run_for_audio_connection(hfp_connection_t * hfp_connection){ 696 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 697 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 698 699 if (hfp_connection->release_audio_connection){ 700 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 701 hfp_connection->release_audio_connection = 0; 702 gap_disconnect(hfp_connection->sco_handle); 703 return 1; 704 } 705 706 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 707 708 // run codecs exchange 709 int done = codecs_exchange_state_machine(hfp_connection); 710 if (done) return 1; 711 712 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 713 if (hfp_connection->establish_audio_connection){ 714 hfp_connection->state = HFP_W4_SCO_CONNECTED; 715 hfp_connection->establish_audio_connection = 0; 716 hfp_setup_synchronous_connection(hfp_connection); 717 return 1; 718 } 719 return 0; 720 } 721 722 723 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 724 725 if (hfp_connection->ok_pending) return 0; 726 727 if (hfp_connection->hf_answer_incoming_call){ 728 hfp_hf_cmd_ata(hfp_connection->rfcomm_cid); 729 hfp_connection->hf_answer_incoming_call = 0; 730 return 1; 731 } 732 return 0; 733 } 734 735 static void hfp_hf_run_for_context(hfp_connection_t * hfp_connection){ 736 737 btstack_assert(hfp_connection != NULL); 738 btstack_assert(hfp_connection->local_role == HFP_ROLE_HF); 739 740 // during SDP query, RFCOMM CID is not set 741 if (hfp_connection->rfcomm_cid == 0) return; 742 743 // emit postponed VRA event 744 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->emit_vra_enabled_after_audio_established){ 745 hfp_connection->emit_vra_enabled_after_audio_established = false; 746 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 747 } 748 749 // assert command could be sent 750 if (hci_can_send_command_packet_now() == 0) return; 751 752 #ifdef ENABLE_CC256X_ASSISTED_HFP 753 // WBS Disassociate 754 if (hfp_connection->cc256x_send_wbs_disassociate){ 755 hfp_connection->cc256x_send_wbs_disassociate = false; 756 hci_send_cmd(&hci_ti_wbs_disassociate); 757 return; 758 } 759 // Write Codec Config 760 if (hfp_connection->cc256x_send_write_codec_config){ 761 hfp_connection->cc256x_send_write_codec_config = false; 762 hfp_cc256x_write_codec_config(hfp_connection); 763 return; 764 } 765 // WBS Associate 766 if (hfp_connection->cc256x_send_wbs_associate){ 767 hfp_connection->cc256x_send_wbs_associate = false; 768 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 769 return; 770 } 771 #endif 772 #ifdef ENABLE_BCM_PCM_WBS 773 // Enable WBS 774 if (hfp_connection->bcm_send_enable_wbs){ 775 hfp_connection->bcm_send_enable_wbs = false; 776 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 777 return; 778 } 779 // Write I2S/PCM params 780 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 781 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 782 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 783 return; 784 } 785 // Disable WBS 786 if (hfp_connection->bcm_send_disable_wbs){ 787 hfp_connection->bcm_send_disable_wbs = false; 788 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 789 return; 790 } 791 #endif 792 #ifdef ENABLE_RTK_PCM_WBS 793 if (hfp_connection->rtk_send_sco_config){ 794 hfp_connection->rtk_send_sco_config = false; 795 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){ 796 log_info("RTK SCO: 16k + mSBC"); 797 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x00, 0x00, 0x41); 798 } else { 799 log_info("RTK SCO: 16k + CVSD"); 800 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x0c, 0x00, 0x01); 801 } 802 return; 803 } 804 #endif 805 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 806 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 807 hfp_finalize_connection_context(hfp_connection); 808 return; 809 } 810 #endif 811 812 if (hfp_connection->accept_sco){ 813 bool incoming_eSCO = hfp_connection->accept_sco == 2; 814 hfp_connection->accept_sco = 0; 815 // notify about codec selection if not done already 816 if (hfp_connection->negotiated_codec == 0){ 817 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 818 } 819 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 820 return; 821 } 822 823 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 824 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 825 return; 826 } 827 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection); 828 if (!done){ 829 done = hfp_hf_run_for_context_service_level_connection_queries(hfp_connection); 830 } 831 if (!done){ 832 done = hfp_hf_run_for_audio_connection(hfp_connection); 833 } 834 if (!done){ 835 done = hfp_hf_voice_recognition_state_machine(hfp_connection); 836 } 837 if (!done){ 838 done = call_setup_state_machine(hfp_connection); 839 } 840 841 // don't send a new command while ok still pending or SLC is not established 842 if (hfp_connection->ok_pending || (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED)){ 843 return; 844 } 845 846 if (hfp_connection->send_microphone_gain){ 847 hfp_connection->send_microphone_gain = 0; 848 hfp_connection->ok_pending = 1; 849 hfp_hf_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 850 return; 851 } 852 853 if (hfp_connection->send_speaker_gain){ 854 hfp_connection->send_speaker_gain = 0; 855 hfp_connection->ok_pending = 1; 856 hfp_hf_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 857 return; 858 } 859 860 if (hfp_connection->hf_deactivate_calling_line_notification){ 861 hfp_connection->hf_deactivate_calling_line_notification = 0; 862 hfp_connection->ok_pending = 1; 863 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 0); 864 return; 865 } 866 867 if (hfp_connection->hf_activate_calling_line_notification){ 868 hfp_connection->hf_activate_calling_line_notification = 0; 869 hfp_connection->ok_pending = 1; 870 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 1); 871 return; 872 } 873 874 if (hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction){ 875 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 0; 876 hfp_connection->response_pending_for_command = HFP_CMD_TURN_OFF_EC_AND_NR; 877 hfp_connection->ok_pending = 1; 878 hfp_hf_send_cmd_with_int(hfp_connection->rfcomm_cid, HFP_TURN_OFF_EC_AND_NR, 0); 879 return; 880 } 881 882 if (hfp_connection->hf_deactivate_call_waiting_notification){ 883 hfp_connection->hf_deactivate_call_waiting_notification = 0; 884 hfp_connection->ok_pending = 1; 885 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 0); 886 return; 887 } 888 889 if (hfp_connection->hf_activate_call_waiting_notification){ 890 hfp_connection->hf_activate_call_waiting_notification = 0; 891 hfp_connection->ok_pending = 1; 892 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 1); 893 return; 894 } 895 896 if (hfp_connection->hf_initiate_outgoing_call){ 897 hfp_connection->hf_initiate_outgoing_call = 0; 898 hfp_connection->ok_pending = 1; 899 hfp_hf_initiate_outgoing_call_cmd(hfp_connection->rfcomm_cid); 900 return; 901 } 902 903 if (hfp_connection->hf_initiate_memory_dialing){ 904 hfp_connection->hf_initiate_memory_dialing = 0; 905 hfp_connection->ok_pending = 1; 906 hfp_hf_send_memory_dial_cmd(hfp_connection->rfcomm_cid, hfp_connection->memory_id); 907 return; 908 } 909 910 if (hfp_connection->hf_initiate_redial_last_number){ 911 hfp_connection->hf_initiate_redial_last_number = 0; 912 hfp_connection->ok_pending = 1; 913 hfp_hf_send_redial_last_number_cmd(hfp_connection->rfcomm_cid); 914 return; 915 } 916 917 if (hfp_connection->hf_send_chup){ 918 hfp_connection->hf_send_chup = 0; 919 hfp_connection->ok_pending = 1; 920 hfp_hf_send_chup(hfp_connection->rfcomm_cid); 921 return; 922 } 923 924 if (hfp_connection->hf_send_chld_0){ 925 hfp_connection->hf_send_chld_0 = 0; 926 hfp_connection->ok_pending = 1; 927 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 0); 928 return; 929 } 930 931 if (hfp_connection->hf_send_chld_1){ 932 hfp_connection->hf_send_chld_1 = 0; 933 hfp_connection->ok_pending = 1; 934 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 1); 935 return; 936 } 937 938 if (hfp_connection->hf_send_chld_2){ 939 hfp_connection->hf_send_chld_2 = 0; 940 hfp_connection->ok_pending = 1; 941 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 2); 942 return; 943 } 944 945 if (hfp_connection->hf_send_chld_3){ 946 hfp_connection->hf_send_chld_3 = 0; 947 hfp_connection->ok_pending = 1; 948 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 3); 949 return; 950 } 951 952 if (hfp_connection->hf_send_chld_4){ 953 hfp_connection->hf_send_chld_4 = 0; 954 hfp_connection->ok_pending = 1; 955 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 4); 956 return; 957 } 958 959 if (hfp_connection->hf_send_chld_x){ 960 hfp_connection->hf_send_chld_x = 0; 961 hfp_connection->ok_pending = 1; 962 hfp_hf_send_chld(hfp_connection->rfcomm_cid, hfp_connection->hf_send_chld_x_index); 963 return; 964 } 965 966 if (hfp_connection->hf_send_dtmf_code){ 967 char code = hfp_connection->hf_send_dtmf_code; 968 hfp_connection->hf_send_dtmf_code = 0; 969 hfp_connection->ok_pending = 1; 970 hfp_hf_send_dtmf(hfp_connection->rfcomm_cid, code); 971 // notify client that dtmf was sent 972 char buffer[2]; 973 buffer[0] = code; 974 buffer[1] = 0; 975 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 976 return; 977 } 978 979 if (hfp_connection->hf_send_binp){ 980 hfp_connection->hf_send_binp = 0; 981 hfp_connection->ok_pending = 1; 982 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 983 return; 984 } 985 986 if (hfp_connection->hf_send_clcc){ 987 hfp_connection->hf_send_clcc = 0; 988 hfp_connection->ok_pending = 1; 989 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 990 return; 991 } 992 993 if (hfp_connection->hf_send_rrh){ 994 hfp_connection->hf_send_rrh = 0; 995 char buffer[20]; 996 switch (hfp_connection->hf_send_rrh_command){ 997 case '?': 998 snprintf(buffer, sizeof(buffer), "AT%s?\r", 999 HFP_RESPONSE_AND_HOLD); 1000 buffer[sizeof(buffer) - 1] = 0; 1001 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1002 return; 1003 case '0': 1004 case '1': 1005 case '2': 1006 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", 1007 HFP_RESPONSE_AND_HOLD, 1008 hfp_connection->hf_send_rrh_command); 1009 buffer[sizeof(buffer) - 1] = 0; 1010 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1011 return; 1012 default: 1013 break; 1014 } 1015 return; 1016 } 1017 1018 if (hfp_connection->hf_send_cnum){ 1019 hfp_connection->hf_send_cnum = 0; 1020 char buffer[20]; 1021 snprintf(buffer, sizeof(buffer), "AT%s\r", 1022 HFP_SUBSCRIBER_NUMBER_INFORMATION); 1023 buffer[sizeof(buffer) - 1] = 0; 1024 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1025 return; 1026 } 1027 1028 // update HF indicators 1029 if (hfp_connection->generic_status_update_bitmap){ 1030 int i; 1031 for (i=0; i < hfp_hf_indicators_nr; i++){ 1032 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 1033 if (hfp_connection->generic_status_indicators[i].state){ 1034 hfp_connection->ok_pending = 1; 1035 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 1036 char buffer[30]; 1037 snprintf(buffer, sizeof(buffer), "AT%s=%u,%u\r", 1038 HFP_TRANSFER_HF_INDICATOR_STATUS, 1039 hfp_hf_indicators[i], 1040 (unsigned int)hfp_hf_indicators_value[i]); 1041 buffer[sizeof(buffer) - 1] = 0; 1042 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1043 } else { 1044 log_info("Not sending HF indicator %u as it is disabled", hfp_hf_indicators[i]); 1045 } 1046 return; 1047 } 1048 } 1049 } 1050 1051 if (done) return; 1052 // deal with disconnect 1053 switch (hfp_connection->state){ 1054 case HFP_W2_DISCONNECT_RFCOMM: 1055 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1056 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1057 break; 1058 1059 default: 1060 break; 1061 } 1062 } 1063 1064 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 1065 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 1066 1067 hfp_emit_slc_connection_event(hfp_connection->local_role, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 1068 1069 uint8_t i; 1070 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1071 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1072 } 1073 1074 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1075 hfp_connection->ag_indicators[i].status_changed = 0; 1076 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1077 } 1078 1079 // restore volume settings 1080 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 1081 hfp_connection->send_speaker_gain = 1; 1082 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 1083 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 1084 hfp_connection->send_microphone_gain = 1; 1085 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 1086 // enable all indicators 1087 for (i=0; i < hfp_hf_indicators_nr; i++){ 1088 hfp_connection->generic_status_indicators[i].uuid = hfp_hf_indicators[i]; 1089 hfp_connection->generic_status_indicators[i].state = 1; 1090 } 1091 } 1092 1093 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 1094 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_hf_codecs_nr, hfp_hf_codecs)){ 1095 // Codec supported, confirm 1096 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1097 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1098 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 1099 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 1100 1101 hfp_connection->hf_send_codec_confirm = true; 1102 } else { 1103 // Codec not supported, send supported codecs 1104 hfp_connection->codec_confirmed = 0; 1105 hfp_connection->suggested_codec = 0; 1106 hfp_connection->negotiated_codec = 0; 1107 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1108 1109 hfp_connection->hf_send_supported_codecs = true; 1110 } 1111 } 1112 1113 static bool hfp_hf_switch_on_ok_pending(hfp_connection_t *hfp_connection, uint8_t status){ 1114 bool event_emited = true; 1115 1116 switch (hfp_connection->response_pending_for_command){ 1117 case HFP_CMD_TURN_OFF_EC_AND_NR: 1118 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 1119 break; 1120 default: 1121 event_emited = false; 1122 1123 switch (hfp_connection->state){ 1124 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 1125 if (has_codec_negotiation_feature(hfp_connection)){ 1126 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 1127 break; 1128 } 1129 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1130 break; 1131 1132 case HFP_W4_NOTIFY_ON_CODECS: 1133 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1134 break; 1135 1136 case HFP_W4_RETRIEVE_INDICATORS: 1137 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 1138 break; 1139 1140 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 1141 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 1142 break; 1143 1144 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 1145 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 1146 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 1147 break; 1148 } 1149 if (has_hf_indicators_feature(hfp_connection)){ 1150 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1151 break; 1152 } 1153 hfp_ag_slc_established(hfp_connection); 1154 break; 1155 1156 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 1157 if (has_hf_indicators_feature(hfp_connection)){ 1158 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1159 break; 1160 } 1161 hfp_ag_slc_established(hfp_connection); 1162 break; 1163 1164 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 1165 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 1166 break; 1167 1168 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 1169 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 1170 break; 1171 1172 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 1173 hfp_ag_slc_established(hfp_connection); 1174 break; 1175 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1176 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 1177 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 1178 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1179 break; 1180 } 1181 1182 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 1183 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 1184 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1185 break; 1186 } 1187 1188 switch (hfp_connection->hf_query_operator_state){ 1189 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 1190 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1191 break; 1192 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 1193 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 1194 hfp_emit_network_operator_event(hfp_connection); 1195 break; 1196 default: 1197 break; 1198 } 1199 1200 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1201 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1202 break; 1203 } 1204 1205 switch (hfp_connection->codecs_state){ 1206 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1207 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1208 break; 1209 case HFP_CODECS_HF_CONFIRMED_CODEC: 1210 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1211 break; 1212 default: 1213 break; 1214 } 1215 hfp_hf_voice_recognition_state_machine(hfp_connection); 1216 break; 1217 case HFP_AUDIO_CONNECTION_ESTABLISHED: 1218 hfp_hf_voice_recognition_state_machine(hfp_connection); 1219 break; 1220 default: 1221 break; 1222 } 1223 break; 1224 } 1225 1226 // done 1227 hfp_connection->response_pending_for_command = HFP_CMD_NONE; 1228 hfp_connection->ok_pending = 0; 1229 hfp_connection->command = HFP_CMD_NONE; 1230 return event_emited; 1231 } 1232 1233 static bool hfp_is_ringing(hfp_callsetup_status_t callsetup_status){ 1234 switch (callsetup_status){ 1235 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1236 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1237 return true; 1238 default: 1239 return false; 1240 } 1241 } 1242 1243 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1244 uint16_t i; 1245 1246 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1247 if (hfp_connection->ag_indicators[i].status_changed) { 1248 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1249 hfp_callsetup_status_t new_hf_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1250 bool ringing_old = hfp_is_ringing(hfp_hf_callsetup_status); 1251 bool ringing_new = hfp_is_ringing(new_hf_callsetup_status); 1252 if (ringing_old != ringing_new){ 1253 if (ringing_new){ 1254 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGING); 1255 } else { 1256 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGING); 1257 } 1258 } 1259 hfp_hf_callsetup_status = new_hf_callsetup_status; 1260 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1261 hfp_hf_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1262 // avoid set but not used warning 1263 (void) hfp_hf_callheld_status; 1264 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1265 hfp_call_status_t new_hf_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1266 if (hfp_hf_call_status != new_hf_call_status){ 1267 if (new_hf_call_status == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 1268 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1269 } else { 1270 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1271 } 1272 } 1273 hfp_hf_call_status = new_hf_call_status; 1274 } 1275 hfp_connection->ag_indicators[i].status_changed = 0; 1276 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1277 break; 1278 } 1279 } 1280 } 1281 1282 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1283 int value; 1284 int i; 1285 bool event_emited; 1286 1287 // last argument is still in line_buffer 1288 1289 switch (hfp_connection->command){ 1290 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1291 hfp_connection->command = HFP_CMD_NONE; 1292 hfp_hf_emit_subscriber_information(hfp_connection, 0); 1293 break; 1294 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1295 hfp_connection->command = HFP_CMD_NONE; 1296 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1297 break; 1298 case HFP_CMD_LIST_CURRENT_CALLS: 1299 hfp_connection->command = HFP_CMD_NONE; 1300 hfp_hf_emit_enhanced_call_status(hfp_connection); 1301 break; 1302 case HFP_CMD_SET_SPEAKER_GAIN: 1303 hfp_connection->command = HFP_CMD_NONE; 1304 value = btstack_atoi((char*)hfp_connection->line_buffer); 1305 hfp_hf_speaker_gain = value; 1306 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1307 break; 1308 case HFP_CMD_SET_MICROPHONE_GAIN: 1309 hfp_connection->command = HFP_CMD_NONE; 1310 value = btstack_atoi((char*)hfp_connection->line_buffer); 1311 hfp_hf_microphone_gain = value; 1312 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1313 break; 1314 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1315 hfp_connection->command = HFP_CMD_NONE; 1316 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1317 break; 1318 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1319 hfp_connection->command = HFP_CMD_NONE; 1320 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION); 1321 break; 1322 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1323 hfp_connection->command = HFP_CMD_NONE; 1324 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION); 1325 break; 1326 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1327 hfp_connection->command = HFP_CMD_NONE; 1328 hfp_connection->ok_pending = 0; 1329 hfp_connection->extended_audio_gateway_error = 0; 1330 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1331 break; 1332 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 1333 break; 1334 case HFP_CMD_ERROR: 1335 switch (hfp_connection->state){ 1336 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1337 switch (hfp_connection->codecs_state){ 1338 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1339 hfp_reset_context_flags(hfp_connection); 1340 hfp_emit_sco_event(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 0, hfp_connection->remote_addr, hfp_connection->negotiated_codec); 1341 return; 1342 default: 1343 break; 1344 } 1345 break; 1346 default: 1347 break; 1348 } 1349 1350 // handle error response for voice activation (HF initiated) 1351 switch(hfp_connection->vra_state_requested){ 1352 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1353 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1354 break; 1355 default: 1356 if (hfp_connection->vra_state_requested == hfp_connection->vra_state){ 1357 break; 1358 } 1359 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1360 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1361 hfp_reset_context_flags(hfp_connection); 1362 return; 1363 } 1364 event_emited = hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1365 if (!event_emited){ 1366 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 1); 1367 } 1368 hfp_reset_context_flags(hfp_connection); 1369 break; 1370 1371 case HFP_CMD_OK: 1372 hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_SUCCESS); 1373 break; 1374 case HFP_CMD_RING: 1375 hfp_connection->command = HFP_CMD_NONE; 1376 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1377 break; 1378 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1379 hfp_connection->command = HFP_CMD_NONE; 1380 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1381 break; 1382 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1383 hfp_connection->command = HFP_CMD_NONE; 1384 // report status after SLC established 1385 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 1386 break; 1387 } 1388 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1389 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1390 } 1391 break; 1392 case HFP_CMD_AG_SUGGESTED_CODEC: 1393 hfp_connection->command = HFP_CMD_NONE; 1394 hfp_hf_handle_suggested_codec(hfp_connection); 1395 break; 1396 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1397 hfp_emit_event(hfp_connection, HFP_SUBEVENT_IN_BAND_RING_TONE, get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE)); 1398 default: 1399 break; 1400 } 1401 } 1402 1403 static int hfp_parser_is_end_of_line(uint8_t byte){ 1404 return (byte == '\n') || (byte == '\r'); 1405 } 1406 1407 static void hfp_hf_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 1408 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1409 if (size < 1) return; 1410 1411 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1412 #ifdef ENABLE_HFP_AT_MESSAGES 1413 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1414 #endif 1415 1416 // process messages byte-wise 1417 uint8_t pos; 1418 for (pos = 0; pos < size; pos++){ 1419 hfp_parse(hfp_connection, packet[pos], 1); 1420 // parse until end of line "\r" or "\n" 1421 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1422 hfp_hf_handle_rfcomm_command(hfp_connection); 1423 } 1424 } 1425 1426 static void hfp_hf_run(void){ 1427 btstack_linked_list_iterator_t it; 1428 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1429 while (btstack_linked_list_iterator_has_next(&it)){ 1430 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1431 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1432 hfp_hf_run_for_context(hfp_connection); 1433 } 1434 } 1435 1436 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1437 hfp_connection_t * hfp_connection; 1438 switch (packet_type){ 1439 case RFCOMM_DATA_PACKET: 1440 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1441 if (!hfp_connection) return; 1442 hfp_hf_handle_rfcomm_data(hfp_connection, packet, size); 1443 hfp_hf_run_for_context(hfp_connection); 1444 return; 1445 case HCI_EVENT_PACKET: 1446 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1447 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1448 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1449 return; 1450 } 1451 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1452 break; 1453 default: 1454 break; 1455 } 1456 hfp_hf_run(); 1457 } 1458 1459 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1460 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1461 hfp_hf_run(); 1462 } 1463 1464 static void hfp_hf_set_defaults(void){ 1465 hfp_hf_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1466 hfp_hf_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1467 hfp_hf_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1468 hfp_hf_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1469 hfp_hf_codecs_nr = 0; 1470 hfp_hf_speaker_gain = 9; 1471 hfp_hf_microphone_gain = 9; 1472 hfp_hf_indicators_nr = 0; 1473 } 1474 1475 uint8_t hfp_hf_init(uint16_t rfcomm_channel_nr){ 1476 uint8_t status = rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1477 if (status != ERROR_CODE_SUCCESS){ 1478 return status; 1479 } 1480 1481 hfp_init(); 1482 hfp_hf_set_defaults(); 1483 1484 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1485 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1486 1487 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1488 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1489 return ERROR_CODE_SUCCESS; 1490 } 1491 1492 void hfp_hf_deinit(void){ 1493 hfp_deinit(); 1494 hfp_hf_set_defaults(); 1495 1496 hfp_hf_callback = NULL; 1497 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1498 (void) memset(hfp_hf_phone_number, 0, sizeof(hfp_hf_phone_number)); 1499 } 1500 1501 void hfp_hf_init_codecs(int codecs_nr, const uint8_t * codecs){ 1502 btstack_assert(codecs_nr < HFP_MAX_NUM_CODECS); 1503 1504 hfp_hf_codecs_nr = codecs_nr; 1505 int i; 1506 for (i=0; i<codecs_nr; i++){ 1507 hfp_hf_codecs[i] = codecs[i]; 1508 } 1509 } 1510 1511 void hfp_hf_init_supported_features(uint32_t supported_features){ 1512 hfp_hf_supported_features = supported_features; 1513 } 1514 1515 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1516 btstack_assert(hfp_hf_indicators_nr < HFP_MAX_NUM_INDICATORS); 1517 1518 hfp_hf_indicators_nr = indicators_nr; 1519 int i; 1520 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 1521 hfp_hf_indicators[i] = indicators[i]; 1522 } 1523 } 1524 1525 uint8_t hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1526 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1527 } 1528 1529 uint8_t hfp_hf_release_service_level_connection(hci_con_handle_t acl_handle){ 1530 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1531 if (!hfp_connection){ 1532 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1533 } 1534 hfp_trigger_release_service_level_connection(hfp_connection); 1535 hfp_hf_run_for_context(hfp_connection); 1536 return ERROR_CODE_SUCCESS; 1537 } 1538 1539 static uint8_t hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1540 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1541 if (!hfp_connection) { 1542 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1543 } 1544 hfp_connection->enable_status_update_for_ag_indicators = enable; 1545 hfp_hf_run_for_context(hfp_connection); 1546 return ERROR_CODE_SUCCESS; 1547 } 1548 1549 uint8_t hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1550 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1551 } 1552 1553 uint8_t hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1554 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1555 } 1556 1557 // TODO: returned ERROR - wrong format 1558 uint8_t hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1559 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1560 if (!hfp_connection) { 1561 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1562 } 1563 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1564 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1565 hfp_hf_run_for_context(hfp_connection); 1566 return ERROR_CODE_SUCCESS; 1567 } 1568 1569 uint8_t hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1570 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1571 if (!hfp_connection) { 1572 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1573 } 1574 1575 switch (hfp_connection->hf_query_operator_state){ 1576 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1577 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1578 break; 1579 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1580 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1581 break; 1582 default: 1583 return ERROR_CODE_COMMAND_DISALLOWED; 1584 } 1585 hfp_hf_run_for_context(hfp_connection); 1586 return ERROR_CODE_SUCCESS; 1587 } 1588 1589 static uint8_t hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1590 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1591 if (!hfp_connection) { 1592 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1593 } 1594 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1595 hfp_hf_run_for_context(hfp_connection); 1596 return ERROR_CODE_SUCCESS; 1597 } 1598 1599 1600 uint8_t hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1601 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1602 } 1603 1604 uint8_t hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1605 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1606 } 1607 1608 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1609 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_hf_supported_features & (1 << HFP_HFSF_ESCO_S4)); 1610 } 1611 1612 uint8_t hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1613 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1614 if (!hfp_connection) { 1615 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1616 } 1617 1618 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1619 return ERROR_CODE_COMMAND_DISALLOWED; 1620 } 1621 1622 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 1623 return ERROR_CODE_COMMAND_DISALLOWED; 1624 } 1625 if (has_codec_negotiation_feature(hfp_connection)) { 1626 switch (hfp_connection->codecs_state) { 1627 case HFP_CODECS_W4_AG_COMMON_CODEC: 1628 break; 1629 case HFP_CODECS_EXCHANGED: 1630 hfp_connection->trigger_codec_exchange = 1; 1631 break; 1632 default: 1633 hfp_connection->codec_confirmed = 0; 1634 hfp_connection->suggested_codec = 0; 1635 hfp_connection->negotiated_codec = 0; 1636 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1637 hfp_connection->trigger_codec_exchange = 1; 1638 break; 1639 } 1640 } else { 1641 log_info("no codec negotiation feature, use CVSD"); 1642 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1643 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1644 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1645 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1646 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1647 hfp_connection->establish_audio_connection = 1; 1648 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1649 } 1650 1651 hfp_hf_run_for_context(hfp_connection); 1652 return ERROR_CODE_SUCCESS; 1653 } 1654 1655 uint8_t hfp_hf_release_audio_connection(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 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 1661 return ERROR_CODE_COMMAND_DISALLOWED; 1662 } 1663 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 1664 if (status == ERROR_CODE_SUCCESS){ 1665 hfp_hf_run_for_context(hfp_connection); 1666 } 1667 return ERROR_CODE_SUCCESS; 1668 } 1669 1670 uint8_t hfp_hf_answer_incoming_call(hci_con_handle_t acl_handle){ 1671 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1672 if (!hfp_connection) { 1673 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1674 } 1675 1676 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1677 hfp_connection->hf_answer_incoming_call = 1; 1678 hfp_hf_run_for_context(hfp_connection); 1679 } else { 1680 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_hf_callsetup_status); 1681 return ERROR_CODE_COMMAND_DISALLOWED; 1682 } 1683 return ERROR_CODE_SUCCESS; 1684 } 1685 1686 uint8_t hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1687 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1688 if (!hfp_connection) { 1689 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1690 } 1691 hfp_connection->hf_send_chup = 1; 1692 hfp_hf_run_for_context(hfp_connection); 1693 return ERROR_CODE_SUCCESS; 1694 } 1695 1696 uint8_t hfp_hf_reject_incoming_call(hci_con_handle_t acl_handle){ 1697 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1698 if (!hfp_connection) { 1699 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1700 } 1701 1702 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1703 hfp_connection->hf_send_chup = 1; 1704 hfp_hf_run_for_context(hfp_connection); 1705 } 1706 return ERROR_CODE_SUCCESS; 1707 } 1708 1709 uint8_t hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1710 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1711 if (!hfp_connection) { 1712 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1713 } 1714 1715 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1716 hfp_connection->hf_send_chld_0 = 1; 1717 hfp_hf_run_for_context(hfp_connection); 1718 } 1719 return ERROR_CODE_SUCCESS; 1720 } 1721 1722 uint8_t hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1723 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1724 if (!hfp_connection) { 1725 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1726 } 1727 1728 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1729 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1730 hfp_connection->hf_send_chld_1 = 1; 1731 hfp_hf_run_for_context(hfp_connection); 1732 } 1733 return ERROR_CODE_SUCCESS; 1734 } 1735 1736 uint8_t hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1737 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1738 if (!hfp_connection) { 1739 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1740 } 1741 1742 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1743 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1744 hfp_connection->hf_send_chld_2 = 1; 1745 hfp_hf_run_for_context(hfp_connection); 1746 } 1747 return ERROR_CODE_SUCCESS; 1748 } 1749 1750 uint8_t hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1751 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1752 if (!hfp_connection) { 1753 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1754 } 1755 1756 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1757 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1758 hfp_connection->hf_send_chld_3 = 1; 1759 hfp_hf_run_for_context(hfp_connection); 1760 } 1761 return ERROR_CODE_SUCCESS; 1762 } 1763 1764 uint8_t hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1765 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1766 if (!hfp_connection) { 1767 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1768 } 1769 1770 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1771 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1772 hfp_connection->hf_send_chld_4 = 1; 1773 hfp_hf_run_for_context(hfp_connection); 1774 } 1775 return ERROR_CODE_SUCCESS; 1776 } 1777 1778 uint8_t hfp_hf_release_call_with_index(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 = 10 + index; 1788 hfp_hf_run_for_context(hfp_connection); 1789 } 1790 return ERROR_CODE_SUCCESS; 1791 } 1792 1793 uint8_t hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 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 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1800 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1801 hfp_connection->hf_send_chld_x = 1; 1802 hfp_connection->hf_send_chld_x_index = 20 + index; 1803 hfp_hf_run_for_context(hfp_connection); 1804 } 1805 return ERROR_CODE_SUCCESS; 1806 } 1807 1808 uint8_t hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 1809 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1810 if (!hfp_connection) { 1811 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1812 } 1813 1814 hfp_connection->hf_initiate_outgoing_call = 1; 1815 snprintf(hfp_hf_phone_number, sizeof(hfp_hf_phone_number), "%s", number); 1816 hfp_hf_run_for_context(hfp_connection); 1817 return ERROR_CODE_SUCCESS; 1818 } 1819 1820 uint8_t hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 1821 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1822 if (!hfp_connection) { 1823 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1824 } 1825 1826 hfp_connection->hf_initiate_memory_dialing = 1; 1827 hfp_connection->memory_id = memory_id; 1828 1829 hfp_hf_run_for_context(hfp_connection); 1830 return ERROR_CODE_SUCCESS; 1831 } 1832 1833 uint8_t hfp_hf_redial_last_number(hci_con_handle_t acl_handle){ 1834 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1835 if (!hfp_connection) { 1836 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1837 } 1838 1839 hfp_connection->hf_initiate_redial_last_number = 1; 1840 hfp_hf_run_for_context(hfp_connection); 1841 return ERROR_CODE_SUCCESS; 1842 } 1843 1844 uint8_t hfp_hf_activate_call_waiting_notification(hci_con_handle_t acl_handle){ 1845 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1846 if (!hfp_connection) { 1847 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1848 } 1849 1850 hfp_connection->hf_activate_call_waiting_notification = 1; 1851 hfp_hf_run_for_context(hfp_connection); 1852 return ERROR_CODE_SUCCESS; 1853 } 1854 1855 1856 uint8_t hfp_hf_deactivate_call_waiting_notification(hci_con_handle_t acl_handle){ 1857 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1858 if (!hfp_connection) { 1859 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1860 } 1861 1862 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1863 hfp_hf_run_for_context(hfp_connection); 1864 return ERROR_CODE_SUCCESS; 1865 } 1866 1867 1868 uint8_t hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1869 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1870 if (!hfp_connection) { 1871 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1872 } 1873 1874 hfp_connection->hf_activate_calling_line_notification = 1; 1875 hfp_hf_run_for_context(hfp_connection); 1876 return ERROR_CODE_SUCCESS; 1877 } 1878 1879 uint8_t hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1880 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1881 if (!hfp_connection) { 1882 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1883 } 1884 1885 hfp_connection->hf_deactivate_calling_line_notification = 1; 1886 hfp_hf_run_for_context(hfp_connection); 1887 return ERROR_CODE_SUCCESS; 1888 } 1889 1890 static bool hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection_t * hfp_connection){ 1891 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_EC_NR_FUNCTION); 1892 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_EC_NR_FUNCTION); 1893 return hf && ag; 1894 } 1895 1896 uint8_t hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1897 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1898 if (!hfp_connection) { 1899 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1900 } 1901 if (!hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection)){ 1902 return ERROR_CODE_COMMAND_DISALLOWED; 1903 } 1904 1905 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1906 hfp_hf_run_for_context(hfp_connection); 1907 return ERROR_CODE_SUCCESS; 1908 } 1909 1910 uint8_t hfp_hf_activate_voice_recognition(hci_con_handle_t acl_handle){ 1911 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1912 if (!hfp_connection) { 1913 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1914 } 1915 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1916 return ERROR_CODE_COMMAND_DISALLOWED; 1917 } 1918 1919 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1920 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1921 if (!enhanced_vra_supported && !legacy_vra_supported){ 1922 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1923 } 1924 1925 switch (hfp_connection->vra_state){ 1926 case HFP_VRA_VOICE_RECOGNITION_OFF: 1927 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1928 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 1929 hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 1930 break; 1931 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1932 hfp_connection->activate_voice_recognition = true; 1933 break; 1934 default: 1935 return ERROR_CODE_COMMAND_DISALLOWED; 1936 } 1937 1938 hfp_hf_run_for_context(hfp_connection); 1939 return ERROR_CODE_SUCCESS; 1940 } 1941 1942 uint8_t hfp_hf_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 1943 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1944 if (!hfp_connection) { 1945 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1946 } 1947 1948 if (hfp_connection->emit_vra_enabled_after_audio_established){ 1949 return ERROR_CODE_COMMAND_DISALLOWED; 1950 } 1951 1952 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 1953 return ERROR_CODE_COMMAND_DISALLOWED; 1954 } 1955 1956 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1957 if (!enhanced_vra_supported){ 1958 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1959 } 1960 1961 switch (hfp_connection->vra_state){ 1962 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 1963 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1964 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 1965 break; 1966 default: 1967 return ERROR_CODE_COMMAND_DISALLOWED; 1968 } 1969 1970 hfp_hf_run_for_context(hfp_connection); 1971 return ERROR_CODE_SUCCESS; 1972 } 1973 1974 1975 uint8_t hfp_hf_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 1976 // return deactivate_voice_recognition(acl_handle, false); 1977 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1978 if (!hfp_connection) { 1979 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1980 } 1981 1982 if (hfp_connection->emit_vra_enabled_after_audio_established){ 1983 return ERROR_CODE_COMMAND_DISALLOWED; 1984 } 1985 1986 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 1987 hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1988 return ERROR_CODE_COMMAND_DISALLOWED; 1989 } 1990 1991 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1992 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1993 if (!enhanced_vra_supported && !legacy_vra_supported){ 1994 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1995 } 1996 1997 switch (hfp_connection->vra_state){ 1998 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 1999 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 2000 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2001 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2002 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2003 break; 2004 2005 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 2006 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2007 hfp_connection->deactivate_voice_recognition = true; 2008 break; 2009 2010 case HFP_VRA_VOICE_RECOGNITION_OFF: 2011 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 2012 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 2013 default: 2014 return ERROR_CODE_COMMAND_DISALLOWED; 2015 } 2016 2017 hfp_hf_run_for_context(hfp_connection); 2018 return ERROR_CODE_SUCCESS; 2019 } 2020 2021 uint8_t hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2022 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2023 if (!hfp_connection) { 2024 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2025 } 2026 2027 if (hfp_connection->microphone_gain == gain) { 2028 return ERROR_CODE_SUCCESS; 2029 } 2030 2031 if ((gain < 0) || (gain > 15)){ 2032 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2033 return ERROR_CODE_COMMAND_DISALLOWED; 2034 } 2035 2036 hfp_connection->microphone_gain = gain; 2037 hfp_connection->send_microphone_gain = 1; 2038 hfp_hf_run_for_context(hfp_connection); 2039 return ERROR_CODE_SUCCESS; 2040 } 2041 2042 uint8_t hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2043 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2044 if (!hfp_connection) { 2045 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2046 } 2047 2048 if (hfp_connection->speaker_gain == gain){ 2049 return ERROR_CODE_SUCCESS; 2050 } 2051 2052 if ((gain < 0) || (gain > 15)){ 2053 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2054 return ERROR_CODE_COMMAND_DISALLOWED; 2055 } 2056 2057 hfp_connection->speaker_gain = gain; 2058 hfp_connection->send_speaker_gain = 1; 2059 hfp_hf_run_for_context(hfp_connection); 2060 return ERROR_CODE_SUCCESS; 2061 } 2062 2063 uint8_t hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 2064 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2065 if (!hfp_connection) { 2066 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2067 } 2068 hfp_connection->hf_send_dtmf_code = code; 2069 hfp_hf_run_for_context(hfp_connection); 2070 return ERROR_CODE_SUCCESS; 2071 } 2072 2073 uint8_t hfp_hf_request_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2074 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2075 if (!hfp_connection) { 2076 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2077 } 2078 hfp_connection->hf_send_binp = 1; 2079 hfp_hf_run_for_context(hfp_connection); 2080 return ERROR_CODE_SUCCESS; 2081 } 2082 2083 uint8_t hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 2084 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2085 if (!hfp_connection) { 2086 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2087 } 2088 hfp_connection->hf_send_clcc = 1; 2089 hfp_hf_run_for_context(hfp_connection); 2090 return ERROR_CODE_SUCCESS; 2091 } 2092 2093 2094 uint8_t hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 2095 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2096 if (!hfp_connection) { 2097 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2098 } 2099 hfp_connection->hf_send_rrh = 1; 2100 hfp_connection->hf_send_rrh_command = '?'; 2101 hfp_hf_run_for_context(hfp_connection); 2102 return ERROR_CODE_SUCCESS; 2103 } 2104 2105 uint8_t hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 2106 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2107 if (!hfp_connection) { 2108 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2109 } 2110 hfp_connection->hf_send_rrh = 1; 2111 hfp_connection->hf_send_rrh_command = '0'; 2112 hfp_hf_run_for_context(hfp_connection); 2113 return ERROR_CODE_SUCCESS; 2114 } 2115 2116 uint8_t hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 2117 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2118 if (!hfp_connection) { 2119 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2120 } 2121 hfp_connection->hf_send_rrh = 1; 2122 hfp_connection->hf_send_rrh_command = '1'; 2123 hfp_hf_run_for_context(hfp_connection); 2124 return ERROR_CODE_SUCCESS; 2125 } 2126 2127 uint8_t hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 2128 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2129 if (!hfp_connection) { 2130 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2131 } 2132 hfp_connection->hf_send_rrh = 1; 2133 hfp_connection->hf_send_rrh_command = '2'; 2134 hfp_hf_run_for_context(hfp_connection); 2135 return ERROR_CODE_SUCCESS; 2136 } 2137 2138 uint8_t hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 2139 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2140 if (!hfp_connection) { 2141 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2142 } 2143 hfp_connection->hf_send_cnum = 1; 2144 hfp_hf_run_for_context(hfp_connection); 2145 return ERROR_CODE_SUCCESS; 2146 } 2147 2148 uint8_t hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 2149 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2150 if (!hfp_connection) { 2151 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2152 } 2153 // find index for assigned number 2154 int i; 2155 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 2156 if (hfp_hf_indicators[i] == assigned_number){ 2157 // set value 2158 hfp_hf_indicators_value[i] = value; 2159 // mark for update 2160 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 2161 hfp_connection->generic_status_update_bitmap |= (1<<i); 2162 // send update 2163 hfp_hf_run_for_context(hfp_connection); 2164 } 2165 return ERROR_CODE_SUCCESS; 2166 } 2167 } 2168 return ERROR_CODE_SUCCESS; 2169 } 2170 2171 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 2172 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2173 if (!hfp_connection) { 2174 return 0; 2175 } 2176 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 2177 } 2178 2179 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){ 2180 if (!name){ 2181 name = hfp_hf_default_service_name; 2182 } 2183 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 2184 2185 // Construct SupportedFeatures for SDP bitmap: 2186 // 2187 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2188 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2189 // 2190 // Wide band speech (bit 5) requires Codec negotiation 2191 // 2192 uint16_t sdp_features = supported_features & 0x1f; 2193 if ( (wide_band_speech != 0) && (supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION))){ 2194 sdp_features |= 1 << 5; 2195 } 2196 2197 if (supported_features & (1 << HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2198 sdp_features |= 1 << 6; 2199 } 2200 2201 if (supported_features & (1 << HFP_HFSF_VOICE_RECOGNITION_TEXT)){ 2202 sdp_features |= 1 << 7; 2203 } 2204 2205 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2206 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2207 } 2208 2209 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 2210 btstack_assert(callback != NULL); 2211 2212 hfp_hf_callback = callback; 2213 hfp_set_hf_callback(callback); 2214 } 2215