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 return; 972 } 973 974 if (hfp_connection->hf_send_binp){ 975 hfp_connection->hf_send_binp = 0; 976 hfp_connection->ok_pending = 1; 977 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 978 return; 979 } 980 981 if (hfp_connection->hf_send_clcc){ 982 hfp_connection->hf_send_clcc = 0; 983 hfp_connection->ok_pending = 1; 984 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 985 return; 986 } 987 988 if (hfp_connection->hf_send_rrh){ 989 hfp_connection->hf_send_rrh = 0; 990 char buffer[20]; 991 switch (hfp_connection->hf_send_rrh_command){ 992 case '?': 993 snprintf(buffer, sizeof(buffer), "AT%s?\r", 994 HFP_RESPONSE_AND_HOLD); 995 buffer[sizeof(buffer) - 1] = 0; 996 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 997 return; 998 case '0': 999 case '1': 1000 case '2': 1001 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", 1002 HFP_RESPONSE_AND_HOLD, 1003 hfp_connection->hf_send_rrh_command); 1004 buffer[sizeof(buffer) - 1] = 0; 1005 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1006 return; 1007 default: 1008 break; 1009 } 1010 return; 1011 } 1012 1013 if (hfp_connection->hf_send_cnum){ 1014 hfp_connection->hf_send_cnum = 0; 1015 char buffer[20]; 1016 snprintf(buffer, sizeof(buffer), "AT%s\r", 1017 HFP_SUBSCRIBER_NUMBER_INFORMATION); 1018 buffer[sizeof(buffer) - 1] = 0; 1019 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1020 return; 1021 } 1022 1023 // update HF indicators 1024 if (hfp_connection->generic_status_update_bitmap){ 1025 int i; 1026 for (i=0; i < hfp_hf_indicators_nr; i++){ 1027 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 1028 if (hfp_connection->generic_status_indicators[i].state){ 1029 hfp_connection->ok_pending = 1; 1030 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 1031 char buffer[30]; 1032 snprintf(buffer, sizeof(buffer), "AT%s=%u,%u\r", 1033 HFP_TRANSFER_HF_INDICATOR_STATUS, 1034 hfp_hf_indicators[i], 1035 (unsigned int)hfp_hf_indicators_value[i]); 1036 buffer[sizeof(buffer) - 1] = 0; 1037 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1038 } else { 1039 log_info("Not sending HF indicator %u as it is disabled", hfp_hf_indicators[i]); 1040 } 1041 return; 1042 } 1043 } 1044 } 1045 1046 if (done) return; 1047 // deal with disconnect 1048 switch (hfp_connection->state){ 1049 case HFP_W2_DISCONNECT_RFCOMM: 1050 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1051 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1052 break; 1053 1054 default: 1055 break; 1056 } 1057 } 1058 1059 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 1060 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 1061 1062 hfp_emit_slc_connection_event(hfp_connection->local_role, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 1063 1064 uint8_t i; 1065 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1066 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1067 } 1068 1069 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1070 hfp_connection->ag_indicators[i].status_changed = 0; 1071 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1072 } 1073 1074 // restore volume settings 1075 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 1076 hfp_connection->send_speaker_gain = 1; 1077 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 1078 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 1079 hfp_connection->send_microphone_gain = 1; 1080 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 1081 // enable all indicators 1082 for (i=0; i < hfp_hf_indicators_nr; i++){ 1083 hfp_connection->generic_status_indicators[i].uuid = hfp_hf_indicators[i]; 1084 hfp_connection->generic_status_indicators[i].state = 1; 1085 } 1086 } 1087 1088 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 1089 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_hf_codecs_nr, hfp_hf_codecs)){ 1090 // Codec supported, confirm 1091 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1092 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1093 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 1094 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 1095 1096 hfp_connection->hf_send_codec_confirm = true; 1097 } else { 1098 // Codec not supported, send supported codecs 1099 hfp_connection->codec_confirmed = 0; 1100 hfp_connection->suggested_codec = 0; 1101 hfp_connection->negotiated_codec = 0; 1102 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1103 1104 hfp_connection->hf_send_supported_codecs = true; 1105 } 1106 } 1107 1108 static bool hfp_hf_switch_on_ok_pending(hfp_connection_t *hfp_connection, uint8_t status){ 1109 bool event_emited = true; 1110 1111 switch (hfp_connection->response_pending_for_command){ 1112 case HFP_CMD_TURN_OFF_EC_AND_NR: 1113 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 1114 break; 1115 default: 1116 event_emited = false; 1117 1118 switch (hfp_connection->state){ 1119 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 1120 if (has_codec_negotiation_feature(hfp_connection)){ 1121 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 1122 break; 1123 } 1124 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1125 break; 1126 1127 case HFP_W4_NOTIFY_ON_CODECS: 1128 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1129 break; 1130 1131 case HFP_W4_RETRIEVE_INDICATORS: 1132 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 1133 break; 1134 1135 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 1136 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 1137 break; 1138 1139 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 1140 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 1141 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 1142 break; 1143 } 1144 if (has_hf_indicators_feature(hfp_connection)){ 1145 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1146 break; 1147 } 1148 hfp_ag_slc_established(hfp_connection); 1149 break; 1150 1151 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 1152 if (has_hf_indicators_feature(hfp_connection)){ 1153 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1154 break; 1155 } 1156 hfp_ag_slc_established(hfp_connection); 1157 break; 1158 1159 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 1160 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 1161 break; 1162 1163 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 1164 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 1165 break; 1166 1167 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 1168 hfp_ag_slc_established(hfp_connection); 1169 break; 1170 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1171 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 1172 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 1173 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1174 break; 1175 } 1176 1177 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 1178 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 1179 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 0); 1180 break; 1181 } 1182 1183 switch (hfp_connection->hf_query_operator_state){ 1184 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 1185 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1186 break; 1187 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 1188 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 1189 hfp_emit_network_operator_event(hfp_connection); 1190 break; 1191 default: 1192 break; 1193 } 1194 1195 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1196 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1197 break; 1198 } 1199 1200 switch (hfp_connection->codecs_state){ 1201 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1202 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1203 break; 1204 case HFP_CODECS_HF_CONFIRMED_CODEC: 1205 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1206 break; 1207 default: 1208 break; 1209 } 1210 hfp_hf_voice_recognition_state_machine(hfp_connection); 1211 break; 1212 case HFP_AUDIO_CONNECTION_ESTABLISHED: 1213 hfp_hf_voice_recognition_state_machine(hfp_connection); 1214 break; 1215 default: 1216 break; 1217 } 1218 break; 1219 } 1220 1221 // done 1222 hfp_connection->response_pending_for_command = HFP_CMD_NONE; 1223 hfp_connection->ok_pending = 0; 1224 hfp_connection->command = HFP_CMD_NONE; 1225 return event_emited; 1226 } 1227 1228 static bool hfp_is_ringing(hfp_callsetup_status_t callsetup_status){ 1229 switch (callsetup_status){ 1230 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1231 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1232 return true; 1233 default: 1234 return false; 1235 } 1236 } 1237 1238 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1239 uint16_t i; 1240 1241 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1242 if (hfp_connection->ag_indicators[i].status_changed) { 1243 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1244 hfp_callsetup_status_t new_hf_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1245 bool ringing_old = hfp_is_ringing(hfp_hf_callsetup_status); 1246 bool ringing_new = hfp_is_ringing(new_hf_callsetup_status); 1247 if (ringing_old != ringing_new){ 1248 if (ringing_new){ 1249 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGING); 1250 } else { 1251 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGING); 1252 } 1253 } 1254 hfp_hf_callsetup_status = new_hf_callsetup_status; 1255 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1256 hfp_hf_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1257 // avoid set but not used warning 1258 (void) hfp_hf_callheld_status; 1259 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1260 hfp_call_status_t new_hf_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1261 if (hfp_hf_call_status != new_hf_call_status){ 1262 if (new_hf_call_status == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 1263 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1264 } else { 1265 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1266 } 1267 } 1268 hfp_hf_call_status = new_hf_call_status; 1269 } 1270 hfp_connection->ag_indicators[i].status_changed = 0; 1271 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1272 break; 1273 } 1274 } 1275 } 1276 1277 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1278 int value; 1279 int i; 1280 bool event_emited; 1281 1282 // last argument is still in line_buffer 1283 1284 switch (hfp_connection->command){ 1285 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1286 hfp_connection->command = HFP_CMD_NONE; 1287 hfp_hf_emit_subscriber_information(hfp_connection, 0); 1288 break; 1289 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1290 hfp_connection->command = HFP_CMD_NONE; 1291 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1292 break; 1293 case HFP_CMD_LIST_CURRENT_CALLS: 1294 hfp_connection->command = HFP_CMD_NONE; 1295 hfp_hf_emit_enhanced_call_status(hfp_connection); 1296 break; 1297 case HFP_CMD_SET_SPEAKER_GAIN: 1298 hfp_connection->command = HFP_CMD_NONE; 1299 value = btstack_atoi((char*)hfp_connection->line_buffer); 1300 hfp_hf_speaker_gain = value; 1301 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1302 break; 1303 case HFP_CMD_SET_MICROPHONE_GAIN: 1304 hfp_connection->command = HFP_CMD_NONE; 1305 value = btstack_atoi((char*)hfp_connection->line_buffer); 1306 hfp_hf_microphone_gain = value; 1307 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1308 break; 1309 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1310 hfp_connection->command = HFP_CMD_NONE; 1311 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1312 break; 1313 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1314 hfp_connection->command = HFP_CMD_NONE; 1315 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION); 1316 break; 1317 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1318 hfp_connection->command = HFP_CMD_NONE; 1319 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION); 1320 break; 1321 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1322 hfp_connection->command = HFP_CMD_NONE; 1323 hfp_connection->ok_pending = 0; 1324 hfp_connection->extended_audio_gateway_error = 0; 1325 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1326 break; 1327 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 1328 break; 1329 case HFP_CMD_ERROR: 1330 switch (hfp_connection->state){ 1331 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1332 switch (hfp_connection->codecs_state){ 1333 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1334 hfp_reset_context_flags(hfp_connection); 1335 hfp_emit_sco_event(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 0, hfp_connection->remote_addr, hfp_connection->negotiated_codec); 1336 return; 1337 default: 1338 break; 1339 } 1340 break; 1341 default: 1342 break; 1343 } 1344 1345 // handle error response for voice activation (HF initiated) 1346 switch(hfp_connection->vra_state_requested){ 1347 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1348 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1349 break; 1350 default: 1351 if (hfp_connection->vra_state_requested == hfp_connection->vra_state){ 1352 break; 1353 } 1354 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1355 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1356 hfp_reset_context_flags(hfp_connection); 1357 return; 1358 } 1359 event_emited = hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1360 if (!event_emited){ 1361 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, 1); 1362 } 1363 hfp_reset_context_flags(hfp_connection); 1364 break; 1365 1366 case HFP_CMD_OK: 1367 hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_SUCCESS); 1368 break; 1369 case HFP_CMD_RING: 1370 hfp_connection->command = HFP_CMD_NONE; 1371 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1372 break; 1373 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1374 hfp_connection->command = HFP_CMD_NONE; 1375 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1376 break; 1377 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1378 hfp_connection->command = HFP_CMD_NONE; 1379 // report status after SLC established 1380 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 1381 break; 1382 } 1383 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1384 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1385 } 1386 break; 1387 case HFP_CMD_AG_SUGGESTED_CODEC: 1388 hfp_connection->command = HFP_CMD_NONE; 1389 hfp_hf_handle_suggested_codec(hfp_connection); 1390 break; 1391 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1392 hfp_emit_event(hfp_connection, HFP_SUBEVENT_IN_BAND_RING_TONE, get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE)); 1393 default: 1394 break; 1395 } 1396 } 1397 1398 static int hfp_parser_is_end_of_line(uint8_t byte){ 1399 return (byte == '\n') || (byte == '\r'); 1400 } 1401 1402 static void hfp_hf_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 1403 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1404 if (size < 1) return; 1405 1406 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1407 #ifdef ENABLE_HFP_AT_MESSAGES 1408 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1409 #endif 1410 1411 // process messages byte-wise 1412 uint8_t pos; 1413 for (pos = 0; pos < size; pos++){ 1414 hfp_parse(hfp_connection, packet[pos], 1); 1415 // parse until end of line "\r" or "\n" 1416 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1417 hfp_hf_handle_rfcomm_command(hfp_connection); 1418 } 1419 } 1420 1421 static void hfp_hf_run(void){ 1422 btstack_linked_list_iterator_t it; 1423 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1424 while (btstack_linked_list_iterator_has_next(&it)){ 1425 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1426 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1427 hfp_hf_run_for_context(hfp_connection); 1428 } 1429 } 1430 1431 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1432 hfp_connection_t * hfp_connection; 1433 switch (packet_type){ 1434 case RFCOMM_DATA_PACKET: 1435 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1436 if (!hfp_connection) return; 1437 hfp_hf_handle_rfcomm_data(hfp_connection, packet, size); 1438 hfp_hf_run_for_context(hfp_connection); 1439 return; 1440 case HCI_EVENT_PACKET: 1441 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1442 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1443 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1444 return; 1445 } 1446 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1447 break; 1448 default: 1449 break; 1450 } 1451 hfp_hf_run(); 1452 } 1453 1454 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1455 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1456 hfp_hf_run(); 1457 } 1458 1459 static void hfp_hf_set_defaults(void){ 1460 hfp_hf_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1461 hfp_hf_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1462 hfp_hf_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1463 hfp_hf_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1464 hfp_hf_codecs_nr = 0; 1465 hfp_hf_speaker_gain = 9; 1466 hfp_hf_microphone_gain = 9; 1467 hfp_hf_indicators_nr = 0; 1468 } 1469 1470 uint8_t hfp_hf_init(uint16_t rfcomm_channel_nr){ 1471 uint8_t status = rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1472 if (status != ERROR_CODE_SUCCESS){ 1473 return status; 1474 } 1475 1476 hfp_init(); 1477 hfp_hf_set_defaults(); 1478 1479 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1480 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1481 1482 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1483 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1484 return ERROR_CODE_SUCCESS; 1485 } 1486 1487 void hfp_hf_deinit(void){ 1488 hfp_deinit(); 1489 hfp_hf_set_defaults(); 1490 1491 hfp_hf_callback = NULL; 1492 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1493 (void) memset(hfp_hf_phone_number, 0, sizeof(hfp_hf_phone_number)); 1494 } 1495 1496 void hfp_hf_init_codecs(int codecs_nr, const uint8_t * codecs){ 1497 btstack_assert(codecs_nr < HFP_MAX_NUM_CODECS); 1498 1499 hfp_hf_codecs_nr = codecs_nr; 1500 int i; 1501 for (i=0; i<codecs_nr; i++){ 1502 hfp_hf_codecs[i] = codecs[i]; 1503 } 1504 } 1505 1506 void hfp_hf_init_supported_features(uint32_t supported_features){ 1507 hfp_hf_supported_features = supported_features; 1508 } 1509 1510 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1511 btstack_assert(hfp_hf_indicators_nr < HFP_MAX_NUM_INDICATORS); 1512 1513 hfp_hf_indicators_nr = indicators_nr; 1514 int i; 1515 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 1516 hfp_hf_indicators[i] = indicators[i]; 1517 } 1518 } 1519 1520 uint8_t hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1521 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1522 } 1523 1524 uint8_t hfp_hf_release_service_level_connection(hci_con_handle_t acl_handle){ 1525 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1526 if (!hfp_connection){ 1527 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1528 } 1529 hfp_trigger_release_service_level_connection(hfp_connection); 1530 hfp_hf_run_for_context(hfp_connection); 1531 return ERROR_CODE_SUCCESS; 1532 } 1533 1534 static uint8_t hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1535 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1536 if (!hfp_connection) { 1537 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1538 } 1539 hfp_connection->enable_status_update_for_ag_indicators = enable; 1540 hfp_hf_run_for_context(hfp_connection); 1541 return ERROR_CODE_SUCCESS; 1542 } 1543 1544 uint8_t hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1545 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1546 } 1547 1548 uint8_t hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1549 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1550 } 1551 1552 // TODO: returned ERROR - wrong format 1553 uint8_t hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1554 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1555 if (!hfp_connection) { 1556 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1557 } 1558 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1559 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1560 hfp_hf_run_for_context(hfp_connection); 1561 return ERROR_CODE_SUCCESS; 1562 } 1563 1564 uint8_t hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1565 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1566 if (!hfp_connection) { 1567 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1568 } 1569 1570 switch (hfp_connection->hf_query_operator_state){ 1571 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1572 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1573 break; 1574 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1575 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1576 break; 1577 default: 1578 return ERROR_CODE_COMMAND_DISALLOWED; 1579 } 1580 hfp_hf_run_for_context(hfp_connection); 1581 return ERROR_CODE_SUCCESS; 1582 } 1583 1584 static uint8_t hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1585 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1586 if (!hfp_connection) { 1587 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1588 } 1589 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1590 hfp_hf_run_for_context(hfp_connection); 1591 return ERROR_CODE_SUCCESS; 1592 } 1593 1594 1595 uint8_t hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1596 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1597 } 1598 1599 uint8_t hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1600 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1601 } 1602 1603 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1604 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_hf_supported_features & (1 << HFP_HFSF_ESCO_S4)); 1605 } 1606 1607 uint8_t hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1608 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1609 if (!hfp_connection) { 1610 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1611 } 1612 1613 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1614 return ERROR_CODE_COMMAND_DISALLOWED; 1615 } 1616 1617 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 1618 return ERROR_CODE_COMMAND_DISALLOWED; 1619 } 1620 if (has_codec_negotiation_feature(hfp_connection)) { 1621 switch (hfp_connection->codecs_state) { 1622 case HFP_CODECS_W4_AG_COMMON_CODEC: 1623 break; 1624 case HFP_CODECS_EXCHANGED: 1625 hfp_connection->trigger_codec_exchange = 1; 1626 break; 1627 default: 1628 hfp_connection->codec_confirmed = 0; 1629 hfp_connection->suggested_codec = 0; 1630 hfp_connection->negotiated_codec = 0; 1631 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1632 hfp_connection->trigger_codec_exchange = 1; 1633 break; 1634 } 1635 } else { 1636 log_info("no codec negotiation feature, use CVSD"); 1637 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1638 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1639 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1640 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1641 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1642 hfp_connection->establish_audio_connection = 1; 1643 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1644 } 1645 1646 hfp_hf_run_for_context(hfp_connection); 1647 return ERROR_CODE_SUCCESS; 1648 } 1649 1650 uint8_t hfp_hf_release_audio_connection(hci_con_handle_t acl_handle){ 1651 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1652 if (!hfp_connection) { 1653 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1654 } 1655 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 1656 return ERROR_CODE_COMMAND_DISALLOWED; 1657 } 1658 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 1659 if (status == ERROR_CODE_SUCCESS){ 1660 hfp_hf_run_for_context(hfp_connection); 1661 } 1662 return ERROR_CODE_SUCCESS; 1663 } 1664 1665 uint8_t hfp_hf_answer_incoming_call(hci_con_handle_t acl_handle){ 1666 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1667 if (!hfp_connection) { 1668 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1669 } 1670 1671 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1672 hfp_connection->hf_answer_incoming_call = 1; 1673 hfp_hf_run_for_context(hfp_connection); 1674 } else { 1675 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_hf_callsetup_status); 1676 return ERROR_CODE_COMMAND_DISALLOWED; 1677 } 1678 return ERROR_CODE_SUCCESS; 1679 } 1680 1681 uint8_t hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1682 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1683 if (!hfp_connection) { 1684 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1685 } 1686 hfp_connection->hf_send_chup = 1; 1687 hfp_hf_run_for_context(hfp_connection); 1688 return ERROR_CODE_SUCCESS; 1689 } 1690 1691 uint8_t hfp_hf_reject_incoming_call(hci_con_handle_t acl_handle){ 1692 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1693 if (!hfp_connection) { 1694 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1695 } 1696 1697 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1698 hfp_connection->hf_send_chup = 1; 1699 hfp_hf_run_for_context(hfp_connection); 1700 } 1701 return ERROR_CODE_SUCCESS; 1702 } 1703 1704 uint8_t hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1705 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1706 if (!hfp_connection) { 1707 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1708 } 1709 1710 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1711 hfp_connection->hf_send_chld_0 = 1; 1712 hfp_hf_run_for_context(hfp_connection); 1713 } 1714 return ERROR_CODE_SUCCESS; 1715 } 1716 1717 uint8_t hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1718 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1719 if (!hfp_connection) { 1720 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1721 } 1722 1723 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1724 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1725 hfp_connection->hf_send_chld_1 = 1; 1726 hfp_hf_run_for_context(hfp_connection); 1727 } 1728 return ERROR_CODE_SUCCESS; 1729 } 1730 1731 uint8_t hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1732 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1733 if (!hfp_connection) { 1734 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1735 } 1736 1737 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1738 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1739 hfp_connection->hf_send_chld_2 = 1; 1740 hfp_hf_run_for_context(hfp_connection); 1741 } 1742 return ERROR_CODE_SUCCESS; 1743 } 1744 1745 uint8_t hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1746 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1747 if (!hfp_connection) { 1748 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1749 } 1750 1751 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1752 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1753 hfp_connection->hf_send_chld_3 = 1; 1754 hfp_hf_run_for_context(hfp_connection); 1755 } 1756 return ERROR_CODE_SUCCESS; 1757 } 1758 1759 uint8_t hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1760 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1761 if (!hfp_connection) { 1762 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1763 } 1764 1765 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1766 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1767 hfp_connection->hf_send_chld_4 = 1; 1768 hfp_hf_run_for_context(hfp_connection); 1769 } 1770 return ERROR_CODE_SUCCESS; 1771 } 1772 1773 uint8_t hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1774 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1775 if (!hfp_connection) { 1776 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1777 } 1778 1779 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1780 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1781 hfp_connection->hf_send_chld_x = 1; 1782 hfp_connection->hf_send_chld_x_index = 10 + index; 1783 hfp_hf_run_for_context(hfp_connection); 1784 } 1785 return ERROR_CODE_SUCCESS; 1786 } 1787 1788 uint8_t hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 1789 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1790 if (!hfp_connection) { 1791 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1792 } 1793 1794 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1795 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1796 hfp_connection->hf_send_chld_x = 1; 1797 hfp_connection->hf_send_chld_x_index = 20 + index; 1798 hfp_hf_run_for_context(hfp_connection); 1799 } 1800 return ERROR_CODE_SUCCESS; 1801 } 1802 1803 uint8_t hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 1804 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1805 if (!hfp_connection) { 1806 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1807 } 1808 1809 hfp_connection->hf_initiate_outgoing_call = 1; 1810 snprintf(hfp_hf_phone_number, sizeof(hfp_hf_phone_number), "%s", number); 1811 hfp_hf_run_for_context(hfp_connection); 1812 return ERROR_CODE_SUCCESS; 1813 } 1814 1815 uint8_t hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 1816 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1817 if (!hfp_connection) { 1818 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1819 } 1820 1821 hfp_connection->hf_initiate_memory_dialing = 1; 1822 hfp_connection->memory_id = memory_id; 1823 1824 hfp_hf_run_for_context(hfp_connection); 1825 return ERROR_CODE_SUCCESS; 1826 } 1827 1828 uint8_t hfp_hf_redial_last_number(hci_con_handle_t acl_handle){ 1829 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1830 if (!hfp_connection) { 1831 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1832 } 1833 1834 hfp_connection->hf_initiate_redial_last_number = 1; 1835 hfp_hf_run_for_context(hfp_connection); 1836 return ERROR_CODE_SUCCESS; 1837 } 1838 1839 uint8_t hfp_hf_activate_call_waiting_notification(hci_con_handle_t acl_handle){ 1840 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1841 if (!hfp_connection) { 1842 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1843 } 1844 1845 hfp_connection->hf_activate_call_waiting_notification = 1; 1846 hfp_hf_run_for_context(hfp_connection); 1847 return ERROR_CODE_SUCCESS; 1848 } 1849 1850 1851 uint8_t hfp_hf_deactivate_call_waiting_notification(hci_con_handle_t acl_handle){ 1852 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1853 if (!hfp_connection) { 1854 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1855 } 1856 1857 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1858 hfp_hf_run_for_context(hfp_connection); 1859 return ERROR_CODE_SUCCESS; 1860 } 1861 1862 1863 uint8_t hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1864 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1865 if (!hfp_connection) { 1866 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1867 } 1868 1869 hfp_connection->hf_activate_calling_line_notification = 1; 1870 hfp_hf_run_for_context(hfp_connection); 1871 return ERROR_CODE_SUCCESS; 1872 } 1873 1874 uint8_t hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1875 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1876 if (!hfp_connection) { 1877 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1878 } 1879 1880 hfp_connection->hf_deactivate_calling_line_notification = 1; 1881 hfp_hf_run_for_context(hfp_connection); 1882 return ERROR_CODE_SUCCESS; 1883 } 1884 1885 static bool hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection_t * hfp_connection){ 1886 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_EC_NR_FUNCTION); 1887 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_EC_NR_FUNCTION); 1888 return hf && ag; 1889 } 1890 1891 uint8_t hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1892 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1893 if (!hfp_connection) { 1894 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1895 } 1896 if (!hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection)){ 1897 return ERROR_CODE_COMMAND_DISALLOWED; 1898 } 1899 1900 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1901 hfp_hf_run_for_context(hfp_connection); 1902 return ERROR_CODE_SUCCESS; 1903 } 1904 1905 uint8_t hfp_hf_activate_voice_recognition(hci_con_handle_t acl_handle){ 1906 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1907 if (!hfp_connection) { 1908 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1909 } 1910 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1911 return ERROR_CODE_COMMAND_DISALLOWED; 1912 } 1913 1914 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1915 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1916 if (!enhanced_vra_supported && !legacy_vra_supported){ 1917 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1918 } 1919 1920 switch (hfp_connection->vra_state){ 1921 case HFP_VRA_VOICE_RECOGNITION_OFF: 1922 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1923 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 1924 hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 1925 break; 1926 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1927 hfp_connection->activate_voice_recognition = true; 1928 break; 1929 default: 1930 return ERROR_CODE_COMMAND_DISALLOWED; 1931 } 1932 1933 hfp_hf_run_for_context(hfp_connection); 1934 return ERROR_CODE_SUCCESS; 1935 } 1936 1937 uint8_t hfp_hf_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 1938 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1939 if (!hfp_connection) { 1940 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1941 } 1942 1943 if (hfp_connection->emit_vra_enabled_after_audio_established){ 1944 return ERROR_CODE_COMMAND_DISALLOWED; 1945 } 1946 1947 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 1948 return ERROR_CODE_COMMAND_DISALLOWED; 1949 } 1950 1951 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1952 if (!enhanced_vra_supported){ 1953 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1954 } 1955 1956 switch (hfp_connection->vra_state){ 1957 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 1958 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1959 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 1960 break; 1961 default: 1962 return ERROR_CODE_COMMAND_DISALLOWED; 1963 } 1964 1965 hfp_hf_run_for_context(hfp_connection); 1966 return ERROR_CODE_SUCCESS; 1967 } 1968 1969 1970 uint8_t hfp_hf_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 1971 // return deactivate_voice_recognition(acl_handle, false); 1972 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1973 if (!hfp_connection) { 1974 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1975 } 1976 1977 if (hfp_connection->emit_vra_enabled_after_audio_established){ 1978 return ERROR_CODE_COMMAND_DISALLOWED; 1979 } 1980 1981 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 1982 hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1983 return ERROR_CODE_COMMAND_DISALLOWED; 1984 } 1985 1986 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1987 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1988 if (!enhanced_vra_supported && !legacy_vra_supported){ 1989 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1990 } 1991 1992 switch (hfp_connection->vra_state){ 1993 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 1994 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 1995 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1996 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1997 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 1998 break; 1999 2000 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 2001 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2002 hfp_connection->deactivate_voice_recognition = true; 2003 break; 2004 2005 case HFP_VRA_VOICE_RECOGNITION_OFF: 2006 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 2007 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 2008 default: 2009 return ERROR_CODE_COMMAND_DISALLOWED; 2010 } 2011 2012 hfp_hf_run_for_context(hfp_connection); 2013 return ERROR_CODE_SUCCESS; 2014 } 2015 2016 uint8_t hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2017 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2018 if (!hfp_connection) { 2019 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2020 } 2021 2022 if (hfp_connection->microphone_gain == gain) { 2023 return ERROR_CODE_SUCCESS; 2024 } 2025 2026 if ((gain < 0) || (gain > 15)){ 2027 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2028 return ERROR_CODE_COMMAND_DISALLOWED; 2029 } 2030 2031 hfp_connection->microphone_gain = gain; 2032 hfp_connection->send_microphone_gain = 1; 2033 hfp_hf_run_for_context(hfp_connection); 2034 return ERROR_CODE_SUCCESS; 2035 } 2036 2037 uint8_t hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2038 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2039 if (!hfp_connection) { 2040 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2041 } 2042 2043 if (hfp_connection->speaker_gain == gain){ 2044 return ERROR_CODE_SUCCESS; 2045 } 2046 2047 if ((gain < 0) || (gain > 15)){ 2048 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2049 return ERROR_CODE_COMMAND_DISALLOWED; 2050 } 2051 2052 hfp_connection->speaker_gain = gain; 2053 hfp_connection->send_speaker_gain = 1; 2054 hfp_hf_run_for_context(hfp_connection); 2055 return ERROR_CODE_SUCCESS; 2056 } 2057 2058 uint8_t hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 2059 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2060 if (!hfp_connection) { 2061 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2062 } 2063 hfp_connection->hf_send_dtmf_code = code; 2064 hfp_hf_run_for_context(hfp_connection); 2065 return ERROR_CODE_SUCCESS; 2066 } 2067 2068 uint8_t hfp_hf_request_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2069 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2070 if (!hfp_connection) { 2071 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2072 } 2073 hfp_connection->hf_send_binp = 1; 2074 hfp_hf_run_for_context(hfp_connection); 2075 return ERROR_CODE_SUCCESS; 2076 } 2077 2078 uint8_t hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 2079 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2080 if (!hfp_connection) { 2081 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2082 } 2083 hfp_connection->hf_send_clcc = 1; 2084 hfp_hf_run_for_context(hfp_connection); 2085 return ERROR_CODE_SUCCESS; 2086 } 2087 2088 2089 uint8_t hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 2090 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2091 if (!hfp_connection) { 2092 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2093 } 2094 hfp_connection->hf_send_rrh = 1; 2095 hfp_connection->hf_send_rrh_command = '?'; 2096 hfp_hf_run_for_context(hfp_connection); 2097 return ERROR_CODE_SUCCESS; 2098 } 2099 2100 uint8_t hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 2101 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2102 if (!hfp_connection) { 2103 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2104 } 2105 hfp_connection->hf_send_rrh = 1; 2106 hfp_connection->hf_send_rrh_command = '0'; 2107 hfp_hf_run_for_context(hfp_connection); 2108 return ERROR_CODE_SUCCESS; 2109 } 2110 2111 uint8_t hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 2112 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2113 if (!hfp_connection) { 2114 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2115 } 2116 hfp_connection->hf_send_rrh = 1; 2117 hfp_connection->hf_send_rrh_command = '1'; 2118 hfp_hf_run_for_context(hfp_connection); 2119 return ERROR_CODE_SUCCESS; 2120 } 2121 2122 uint8_t hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 2123 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2124 if (!hfp_connection) { 2125 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2126 } 2127 hfp_connection->hf_send_rrh = 1; 2128 hfp_connection->hf_send_rrh_command = '2'; 2129 hfp_hf_run_for_context(hfp_connection); 2130 return ERROR_CODE_SUCCESS; 2131 } 2132 2133 uint8_t hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 2134 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2135 if (!hfp_connection) { 2136 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2137 } 2138 hfp_connection->hf_send_cnum = 1; 2139 hfp_hf_run_for_context(hfp_connection); 2140 return ERROR_CODE_SUCCESS; 2141 } 2142 2143 uint8_t hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 2144 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2145 if (!hfp_connection) { 2146 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2147 } 2148 // find index for assigned number 2149 int i; 2150 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 2151 if (hfp_hf_indicators[i] == assigned_number){ 2152 // set value 2153 hfp_hf_indicators_value[i] = value; 2154 // mark for update 2155 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 2156 hfp_connection->generic_status_update_bitmap |= (1<<i); 2157 // send update 2158 hfp_hf_run_for_context(hfp_connection); 2159 } 2160 return ERROR_CODE_SUCCESS; 2161 } 2162 } 2163 return ERROR_CODE_SUCCESS; 2164 } 2165 2166 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 2167 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2168 if (!hfp_connection) { 2169 return 0; 2170 } 2171 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 2172 } 2173 2174 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){ 2175 if (!name){ 2176 name = hfp_hf_default_service_name; 2177 } 2178 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 2179 2180 // Construct SupportedFeatures for SDP bitmap: 2181 // 2182 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2183 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2184 // 2185 // Wide band speech (bit 5) requires Codec negotiation 2186 // 2187 uint16_t sdp_features = supported_features & 0x1f; 2188 if ( (wide_band_speech != 0) && (supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION))){ 2189 sdp_features |= 1 << 5; 2190 } 2191 2192 if (supported_features & (1 << HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2193 sdp_features |= 1 << 6; 2194 } 2195 2196 if (supported_features & (1 << HFP_HFSF_VOICE_RECOGNITION_TEXT)){ 2197 sdp_features |= 1 << 7; 2198 } 2199 2200 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2201 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2202 } 2203 2204 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 2205 btstack_assert(callback != NULL); 2206 2207 hfp_hf_callback = callback; 2208 hfp_set_hf_callback(callback); 2209 } 2210