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((uint16_t) 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((uint16_t) 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 ? (uint16_t) strlen((const char *) hfp_connection->line_buffer) : 0; 162 uint8_t pos = 0; 163 event[pos++] = HCI_EVENT_HFP_META; 164 event[pos++] = 8 + bnip_number_len + alpha_len; 165 event[pos++] = event_subtype; 166 little_endian_store_16(event, 3, hfp_connection->acl_handle); 167 pos += 2; 168 event[pos++] = hfp_connection->bnip_type; 169 event[pos++] = bnip_number_len + 1; 170 memcpy(&event[7], hfp_connection->bnip_number, bnip_number_len); 171 pos += bnip_number_len; 172 event[pos++] = 0; 173 event[pos++] = alpha_len + 1; 174 memcpy(&event[pos], hfp_connection->line_buffer, alpha_len); 175 pos += alpha_len; 176 event[pos++] = 0; 177 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 178 } 179 180 static void hfp_hf_emit_enhanced_call_status(const hfp_connection_t * hfp_connection){ 181 if (hfp_hf_callback == NULL) return; 182 183 uint16_t bnip_number_len = (uint16_t) strlen((const char *) hfp_connection->bnip_number); 184 uint8_t event[11 + HFP_BNEP_NUM_MAX_SIZE]; 185 event[0] = HCI_EVENT_HFP_META; 186 event[1] = 10 + bnip_number_len + 1; 187 event[2] = HFP_SUBEVENT_ENHANCED_CALL_STATUS; 188 little_endian_store_16(event, 3, hfp_connection->acl_handle); 189 event[5] = hfp_connection->clcc_idx; 190 event[6] = hfp_connection->clcc_dir; 191 event[7] = hfp_connection->clcc_status; 192 event[8] = hfp_connection->clcc_mode; 193 event[9] = hfp_connection->clcc_mpty; 194 event[10] = hfp_connection->bnip_type; 195 memcpy(&event[11], hfp_connection->bnip_number, bnip_number_len + 1); 196 197 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 11 + bnip_number_len + 1); 198 } 199 200 static void hfp_emit_ag_indicator_mapping_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 201 if (hfp_hf_callback == NULL) return; 202 uint8_t event[8 + HFP_MAX_INDICATOR_DESC_SIZE]; 203 uint16_t indicator_len = btstack_min((uint16_t) strlen(indicator->name), HFP_MAX_INDICATOR_DESC_SIZE-1); 204 event[0] = HCI_EVENT_HFP_META; 205 event[1] = 7 + indicator_len; 206 event[2] = HFP_SUBEVENT_AG_INDICATOR_MAPPING; 207 little_endian_store_16(event, 3, hfp_connection->acl_handle); 208 event[5] = indicator->index; 209 event[6] = indicator->min_range; 210 event[7] = indicator->max_range; 211 memcpy(&event[8], indicator->name, indicator_len); 212 event[8+indicator_len] = 0; 213 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 9 + indicator_len); 214 } 215 216 static void hfp_emit_ag_indicator_status_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 217 if (hfp_hf_callback == NULL) return; 218 uint8_t event[12+HFP_MAX_INDICATOR_DESC_SIZE]; 219 uint16_t indicator_len = btstack_min((uint16_t) strlen(indicator->name), HFP_MAX_INDICATOR_DESC_SIZE-1); 220 event[0] = HCI_EVENT_HFP_META; 221 event[1] = 11 + indicator_len; 222 event[2] = HFP_SUBEVENT_AG_INDICATOR_STATUS_CHANGED; 223 little_endian_store_16(event, 3, hfp_connection->acl_handle); 224 event[5] = indicator->index; 225 event[6] = indicator->status; 226 event[7] = indicator->min_range; 227 event[8] = indicator->max_range; 228 event[9] = indicator->mandatory; 229 event[10] = indicator->enabled; 230 event[11] = indicator->status_changed; 231 memcpy(&event[12], indicator->name, indicator_len); 232 event[12+indicator_len] = 0; 233 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 13 + indicator_len); 234 } 235 236 static void hfp_emit_network_operator_event(const hfp_connection_t * hfp_connection){ 237 if (hfp_hf_callback == NULL) return; 238 uint16_t operator_len = btstack_min((uint16_t) strlen(hfp_connection->network_operator.name), HFP_MAX_NETWORK_OPERATOR_NAME_SIZE-1); 239 uint8_t event[7+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE]; 240 event[0] = HCI_EVENT_HFP_META; 241 event[1] = sizeof(event) - 2; 242 event[2] = HFP_SUBEVENT_NETWORK_OPERATOR_CHANGED; 243 little_endian_store_16(event, 3, hfp_connection->acl_handle); 244 event[5] = hfp_connection->network_operator.mode; 245 event[6] = hfp_connection->network_operator.format; 246 memcpy(&event[7], hfp_connection->network_operator.name, operator_len); 247 event[7+operator_len] = 0; 248 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 8 + operator_len); 249 } 250 251 252 static void hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection_t * hfp_connection){ 253 btstack_assert(hfp_connection != NULL); 254 uint8_t event[HFP_MAX_VR_TEXT_SIZE + 11]; 255 int pos = 0; 256 event[pos++] = HCI_EVENT_HFP_META; 257 event[pos++] = sizeof(event) - 2; 258 event[pos++] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE; 259 little_endian_store_16(event, pos, hfp_connection->acl_handle); 260 pos += 2; 261 little_endian_store_16(event, pos, hfp_connection->ag_msg.text_id); 262 pos += 2; 263 event[pos++] = hfp_connection->ag_msg.text_type; 264 event[pos++] = hfp_connection->ag_msg.text_operation; 265 266 // length, zero ending is already in message 267 uint8_t * value = &hfp_connection->line_buffer[0]; 268 uint16_t value_length = hfp_connection->ag_vra_msg_length; 269 270 little_endian_store_16(event, pos, value_length); 271 pos += 2; 272 memcpy(&event[pos], value, value_length); 273 pos += value_length; 274 275 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 276 } 277 278 /* send commands */ 279 280 static inline int hfp_hf_send_cmd(uint16_t cid, const char * cmd){ 281 char buffer[20]; 282 snprintf(buffer, sizeof(buffer), "AT%s\r", cmd); 283 return send_str_over_rfcomm(cid, buffer); 284 } 285 286 static inline int hfp_hf_send_cmd_with_mark(uint16_t cid, const char * cmd, const char * mark){ 287 char buffer[20]; 288 snprintf(buffer, sizeof(buffer), "AT%s%s\r", cmd, mark); 289 return send_str_over_rfcomm(cid, buffer); 290 } 291 292 static inline int hfp_hf_send_cmd_with_int(uint16_t cid, const char * cmd, uint16_t value){ 293 char buffer[40]; 294 snprintf(buffer, sizeof(buffer), "AT%s=%d\r", cmd, value); 295 return send_str_over_rfcomm(cid, buffer); 296 } 297 298 static int hfp_hf_cmd_notify_on_codecs(uint16_t cid){ 299 char buffer[30]; 300 const int size = sizeof(buffer); 301 int offset = snprintf(buffer, size, "AT%s=", HFP_AVAILABLE_CODECS); 302 offset += join(buffer+offset, size-offset, hfp_hf_codecs, hfp_hf_codecs_nr); 303 offset += snprintf(buffer+offset, size-offset, "\r"); 304 return send_str_over_rfcomm(cid, buffer); 305 } 306 307 static int hfp_hf_cmd_activate_status_update_for_ag_indicator(uint16_t cid, uint32_t indicators_status, int indicators_nr){ 308 char buffer[50]; 309 const int size = sizeof(buffer); 310 int offset = snprintf(buffer, size, "AT%s=", HFP_UPDATE_ENABLE_STATUS_FOR_INDIVIDUAL_AG_INDICATORS); 311 offset += join_bitmap(buffer+offset, size-offset, indicators_status, indicators_nr); 312 offset += snprintf(buffer+offset, size-offset, "\r"); 313 return send_str_over_rfcomm(cid, buffer); 314 } 315 316 static int hfp_hf_cmd_list_supported_generic_status_indicators(uint16_t cid){ 317 char buffer[30]; 318 const int size = sizeof(buffer); 319 int offset = snprintf(buffer, size, "AT%s=", HFP_GENERIC_STATUS_INDICATOR); 320 offset += join(buffer+offset, size-offset, hfp_hf_indicators, hfp_hf_indicators_nr); 321 offset += snprintf(buffer+offset, size-offset, "\r"); 322 return send_str_over_rfcomm(cid, buffer); 323 } 324 325 static int hfp_hf_cmd_activate_status_update_for_all_ag_indicators(uint16_t cid, uint8_t activate){ 326 char buffer[20]; 327 snprintf(buffer, sizeof(buffer), "AT%s=3,0,0,%d\r", HFP_ENABLE_STATUS_UPDATE_FOR_AG_INDICATORS, activate); 328 return send_str_over_rfcomm(cid, buffer); 329 } 330 331 static int hfp_hf_initiate_outgoing_call_cmd(uint16_t cid){ 332 char buffer[40]; 333 snprintf(buffer, sizeof(buffer), "%s%s;\r", HFP_CALL_PHONE_NUMBER, hfp_hf_phone_number); 334 return send_str_over_rfcomm(cid, buffer); 335 } 336 337 static int hfp_hf_send_memory_dial_cmd(uint16_t cid, int memory_id){ 338 char buffer[40]; 339 snprintf(buffer, sizeof(buffer), "%s>%d;\r", HFP_CALL_PHONE_NUMBER, memory_id); 340 return send_str_over_rfcomm(cid, buffer); 341 } 342 343 static int hfp_hf_send_chld(uint16_t cid, unsigned int number){ 344 char buffer[40]; 345 snprintf(buffer, sizeof(buffer), "AT%s=%u\r", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, number); 346 return send_str_over_rfcomm(cid, buffer); 347 } 348 349 static int hfp_hf_send_dtmf(uint16_t cid, char code){ 350 char buffer[20]; 351 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", HFP_TRANSMIT_DTMF_CODES, code); 352 return send_str_over_rfcomm(cid, buffer); 353 } 354 355 static int hfp_hf_cmd_ata(uint16_t cid){ 356 return send_str_over_rfcomm(cid, (char *) "ATA\r"); 357 } 358 359 static int hfp_hf_cmd_exchange_supported_features(uint16_t cid){ 360 return hfp_hf_send_cmd_with_int(cid, HFP_SUPPORTED_FEATURES, hfp_hf_supported_features); 361 } 362 363 static int hfp_hf_cmd_retrieve_indicators(uint16_t cid){ 364 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "=?"); 365 } 366 367 static int hfp_hf_cmd_retrieve_indicators_status(uint16_t cid){ 368 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "?"); 369 } 370 371 static int hfp_hf_cmd_retrieve_can_hold_call(uint16_t cid){ 372 return hfp_hf_send_cmd_with_mark(cid, HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, "=?"); 373 } 374 375 static int hfp_hf_cmd_retrieve_supported_generic_status_indicators(uint16_t cid){ 376 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "=?"); 377 } 378 379 static int hfp_hf_cmd_list_initital_supported_generic_status_indicators(uint16_t cid){ 380 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "?"); 381 } 382 383 static int hfp_hf_cmd_query_operator_name_format(uint16_t cid){ 384 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "=3,0"); 385 } 386 387 static int hfp_hf_cmd_query_operator_name(uint16_t cid){ 388 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "?"); 389 } 390 391 static int hfp_hf_cmd_trigger_codec_connection_setup(uint16_t cid){ 392 return hfp_hf_send_cmd(cid, HFP_TRIGGER_CODEC_CONNECTION_SETUP); 393 } 394 395 static int hfp_hf_set_microphone_gain_cmd(uint16_t cid, int gain){ 396 return hfp_hf_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 397 } 398 399 static int hfp_hf_set_speaker_gain_cmd(uint16_t cid, int gain){ 400 return hfp_hf_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 401 } 402 403 static int hfp_hf_set_calling_line_notification_cmd(uint16_t cid, uint8_t activate){ 404 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CLIP, activate); 405 } 406 407 static int hfp_hf_set_voice_recognition_notification_cmd(uint16_t cid, uint8_t activate){ 408 return hfp_hf_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate); 409 } 410 411 static int hfp_hf_set_call_waiting_notification_cmd(uint16_t cid, uint8_t activate){ 412 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CALL_WAITING_NOTIFICATION, activate); 413 } 414 415 static int hfp_hf_cmd_confirm_codec(uint16_t cid, uint8_t codec){ 416 return hfp_hf_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 417 } 418 419 static int hfp_hf_cmd_enable_extended_audio_gateway_error_report(uint16_t cid, uint8_t enable){ 420 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR, enable); 421 } 422 423 static int hfp_hf_send_redial_last_number_cmd(uint16_t cid){ 424 return hfp_hf_send_cmd(cid, HFP_REDIAL_LAST_NUMBER); 425 } 426 427 static int hfp_hf_send_chup(uint16_t cid){ 428 return hfp_hf_send_cmd(cid, HFP_HANG_UP_CALL); 429 } 430 431 static int hfp_hf_send_binp(uint16_t cid){ 432 return hfp_hf_send_cmd_with_mark(cid, HFP_PHONE_NUMBER_FOR_VOICE_TAG, "=1"); 433 } 434 435 static int hfp_hf_send_clcc(uint16_t cid){ 436 return hfp_hf_send_cmd(cid, HFP_LIST_CURRENT_CALLS); 437 } 438 439 /* state machines */ 440 441 static int hfp_hf_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 442 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 443 if (hfp_connection->ok_pending) return 0; 444 int done = 1; 445 log_info("hfp_hf_run_for_context_service_level_connection state %d\n", hfp_connection->state); 446 switch (hfp_connection->state){ 447 case HFP_EXCHANGE_SUPPORTED_FEATURES: 448 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_hf_codecs, &hfp_hf_codecs_nr); 449 hfp_connection->state = HFP_W4_EXCHANGE_SUPPORTED_FEATURES; 450 hfp_hf_cmd_exchange_supported_features(hfp_connection->rfcomm_cid); 451 break; 452 case HFP_NOTIFY_ON_CODECS: 453 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 454 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 455 break; 456 case HFP_RETRIEVE_INDICATORS: 457 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 458 hfp_hf_cmd_retrieve_indicators(hfp_connection->rfcomm_cid); 459 break; 460 case HFP_RETRIEVE_INDICATORS_STATUS: 461 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 462 hfp_hf_cmd_retrieve_indicators_status(hfp_connection->rfcomm_cid); 463 break; 464 case HFP_ENABLE_INDICATORS_STATUS_UPDATE: 465 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 466 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, 1); 467 break; 468 case HFP_RETRIEVE_CAN_HOLD_CALL: 469 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 470 hfp_hf_cmd_retrieve_can_hold_call(hfp_connection->rfcomm_cid); 471 break; 472 case HFP_LIST_GENERIC_STATUS_INDICATORS: 473 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 474 hfp_hf_cmd_list_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 475 break; 476 case HFP_RETRIEVE_GENERIC_STATUS_INDICATORS: 477 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 478 hfp_hf_cmd_retrieve_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 479 break; 480 case HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 481 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 482 hfp_hf_cmd_list_initital_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 483 break; 484 default: 485 done = 0; 486 break; 487 } 488 return done; 489 } 490 491 492 static int hfp_hf_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 493 if (hfp_connection->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 494 if (hfp_connection->ok_pending){ 495 return 0; 496 } 497 int done = 0; 498 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 499 hfp_connection->ok_pending = 1; 500 done = 1; 501 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, hfp_connection->enable_status_update_for_ag_indicators); 502 return done; 503 }; 504 if (hfp_connection->change_status_update_for_individual_ag_indicators){ 505 hfp_connection->ok_pending = 1; 506 done = 1; 507 hfp_hf_cmd_activate_status_update_for_ag_indicator(hfp_connection->rfcomm_cid, 508 hfp_connection->ag_indicators_status_update_bitmap, 509 hfp_connection->ag_indicators_nr); 510 return done; 511 } 512 513 switch (hfp_connection->hf_query_operator_state){ 514 case HFP_HF_QUERY_OPERATOR_SET_FORMAT: 515 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK; 516 hfp_connection->ok_pending = 1; 517 hfp_hf_cmd_query_operator_name_format(hfp_connection->rfcomm_cid); 518 return 1; 519 case HFP_HF_QUERY_OPERATOR_SEND_QUERY: 520 hfp_connection->hf_query_operator_state = HPF_HF_QUERY_OPERATOR_W4_RESULT; 521 hfp_connection->ok_pending = 1; 522 hfp_hf_cmd_query_operator_name(hfp_connection->rfcomm_cid); 523 return 1; 524 default: 525 break; 526 } 527 528 if (hfp_connection->enable_extended_audio_gateway_error_report){ 529 hfp_connection->ok_pending = 1; 530 done = 1; 531 hfp_hf_cmd_enable_extended_audio_gateway_error_report(hfp_connection->rfcomm_cid, hfp_connection->enable_extended_audio_gateway_error_report); 532 return done; 533 } 534 535 return done; 536 } 537 538 static int hfp_hf_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 539 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 540 return 0; 541 } 542 int done = 0; 543 544 if (hfp_connection->ok_pending == 1){ 545 return 0; 546 } 547 // voice recognition activated from AG 548 if (hfp_connection->command == HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION){ 549 switch(hfp_connection->vra_state_requested){ 550 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 551 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 552 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 553 // ignore AG command, continue to wait for OK 554 return 0; 555 556 default: 557 if (hfp_connection->ag_vra_msg_length > 0){ 558 hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection); 559 hfp_connection->ag_vra_msg_length = 0; 560 break; 561 } 562 switch(hfp_connection->ag_vra_state){ 563 case HFP_VOICE_RECOGNITION_STATE_AG_READY: 564 switch (hfp_connection->ag_vra_status){ 565 case 0: 566 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 567 break; 568 case 1: 569 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 570 break; 571 case 2: 572 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 573 break; 574 default: 575 break; 576 } 577 break; 578 default: 579 // state messages from AG 580 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 581 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 582 break; 583 } 584 break; 585 } 586 hfp_connection->command = HFP_CMD_NONE; 587 } 588 589 590 switch (hfp_connection->vra_state_requested){ 591 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 592 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 0); 593 if (done != 0){ 594 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 595 hfp_connection->ok_pending = 1; 596 } 597 return 1; 598 599 600 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 601 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 1); 602 if (done != 0){ 603 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 604 hfp_connection->ok_pending = 1; 605 return 1; 606 } 607 break; 608 609 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 610 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 2); 611 if (done != 0){ 612 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 613 hfp_connection->ok_pending = 1; 614 return 1; 615 } 616 break; 617 618 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 619 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 620 hfp_connection->vra_state_requested = hfp_connection->vra_state; 621 hfp_connection->activate_voice_recognition = false; 622 if (hfp_connection->activate_voice_recognition){ 623 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 624 hfp_hf_activate_voice_recognition(hfp_connection->acl_handle); 625 } else { 626 hfp_emit_voice_recognition_disabled(hfp_connection, ERROR_CODE_SUCCESS); 627 } 628 break; 629 630 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 631 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 632 hfp_connection->vra_state_requested = hfp_connection->vra_state; 633 hfp_connection->activate_voice_recognition = false; 634 if (hfp_connection->deactivate_voice_recognition){ 635 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 636 } else { 637 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 638 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 639 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 640 } else { 641 // postpone VRA event to simplify application logic 642 hfp_connection->emit_vra_enabled_after_audio_established = true; 643 } 644 } 645 break; 646 647 648 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 649 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 650 hfp_connection->vra_state_requested = hfp_connection->vra_state; 651 hfp_connection->activate_voice_recognition = false; 652 if (hfp_connection->deactivate_voice_recognition){ 653 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 654 } else { 655 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 656 } 657 break; 658 659 default: 660 break; 661 } 662 return done; 663 } 664 665 666 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 667 if (hfp_connection->ok_pending) return 0; 668 669 if (hfp_connection->trigger_codec_exchange){ 670 hfp_connection->trigger_codec_exchange = 0; 671 672 hfp_connection->ok_pending = 1; 673 hfp_hf_cmd_trigger_codec_connection_setup(hfp_connection->rfcomm_cid); 674 return 1; 675 } 676 677 if (hfp_connection->hf_send_codec_confirm){ 678 hfp_connection->hf_send_codec_confirm = false; 679 680 hfp_connection->ok_pending = 1; 681 hfp_hf_cmd_confirm_codec(hfp_connection->rfcomm_cid, hfp_connection->codec_confirmed); 682 return 1; 683 } 684 685 if (hfp_connection->hf_send_supported_codecs){ 686 hfp_connection->hf_send_supported_codecs = false; 687 688 hfp_connection->ok_pending = 1; 689 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 690 return 1; 691 } 692 693 return 0; 694 } 695 696 static int hfp_hf_run_for_audio_connection(hfp_connection_t * hfp_connection){ 697 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 698 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 699 700 if (hfp_connection->release_audio_connection){ 701 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 702 hfp_connection->release_audio_connection = 0; 703 gap_disconnect(hfp_connection->sco_handle); 704 return 1; 705 } 706 707 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 708 709 // run codecs exchange 710 int done = codecs_exchange_state_machine(hfp_connection); 711 if (done) return 1; 712 713 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 714 if (hfp_connection->establish_audio_connection){ 715 hfp_connection->state = HFP_W4_SCO_CONNECTED; 716 hfp_connection->establish_audio_connection = 0; 717 hfp_setup_synchronous_connection(hfp_connection); 718 return 1; 719 } 720 return 0; 721 } 722 723 724 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 725 726 if (hfp_connection->ok_pending) return 0; 727 728 if (hfp_connection->hf_answer_incoming_call){ 729 hfp_hf_cmd_ata(hfp_connection->rfcomm_cid); 730 hfp_connection->hf_answer_incoming_call = 0; 731 return 1; 732 } 733 return 0; 734 } 735 736 static void hfp_hf_run_for_context(hfp_connection_t * hfp_connection){ 737 738 btstack_assert(hfp_connection != NULL); 739 btstack_assert(hfp_connection->local_role == HFP_ROLE_HF); 740 741 // during SDP query, RFCOMM CID is not set 742 if (hfp_connection->rfcomm_cid == 0) return; 743 744 // emit postponed VRA event 745 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->emit_vra_enabled_after_audio_established){ 746 hfp_connection->emit_vra_enabled_after_audio_established = false; 747 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 748 } 749 750 // assert command could be sent 751 if (hci_can_send_command_packet_now() == 0) return; 752 753 #ifdef ENABLE_CC256X_ASSISTED_HFP 754 // WBS Disassociate 755 if (hfp_connection->cc256x_send_wbs_disassociate){ 756 hfp_connection->cc256x_send_wbs_disassociate = false; 757 hci_send_cmd(&hci_ti_wbs_disassociate); 758 return; 759 } 760 // Write Codec Config 761 if (hfp_connection->cc256x_send_write_codec_config){ 762 hfp_connection->cc256x_send_write_codec_config = false; 763 hfp_cc256x_write_codec_config(hfp_connection); 764 return; 765 } 766 // WBS Associate 767 if (hfp_connection->cc256x_send_wbs_associate){ 768 hfp_connection->cc256x_send_wbs_associate = false; 769 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 770 return; 771 } 772 #endif 773 #ifdef ENABLE_BCM_PCM_WBS 774 // Enable WBS 775 if (hfp_connection->bcm_send_enable_wbs){ 776 hfp_connection->bcm_send_enable_wbs = false; 777 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 778 return; 779 } 780 // Write I2S/PCM params 781 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 782 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 783 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 784 return; 785 } 786 // Disable WBS 787 if (hfp_connection->bcm_send_disable_wbs){ 788 hfp_connection->bcm_send_disable_wbs = false; 789 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 790 return; 791 } 792 #endif 793 #ifdef ENABLE_RTK_PCM_WBS 794 if (hfp_connection->rtk_send_sco_config){ 795 hfp_connection->rtk_send_sco_config = false; 796 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){ 797 log_info("RTK SCO: 16k + mSBC"); 798 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x00, 0x00, 0x41); 799 } else { 800 log_info("RTK SCO: 16k + CVSD"); 801 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x0c, 0x00, 0x01); 802 } 803 return; 804 } 805 #endif 806 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 807 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 808 hfp_finalize_connection_context(hfp_connection); 809 return; 810 } 811 #endif 812 813 if (hfp_connection->accept_sco){ 814 bool incoming_eSCO = hfp_connection->accept_sco == 2; 815 hfp_connection->accept_sco = 0; 816 // notify about codec selection if not done already 817 if (hfp_connection->negotiated_codec == 0){ 818 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 819 } 820 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 821 return; 822 } 823 824 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 825 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 826 return; 827 } 828 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection); 829 if (!done){ 830 done = hfp_hf_run_for_context_service_level_connection_queries(hfp_connection); 831 } 832 if (!done){ 833 done = hfp_hf_run_for_audio_connection(hfp_connection); 834 } 835 if (!done){ 836 done = hfp_hf_voice_recognition_state_machine(hfp_connection); 837 } 838 if (!done){ 839 done = call_setup_state_machine(hfp_connection); 840 } 841 842 // don't send a new command while ok still pending or SLC is not established 843 if (hfp_connection->ok_pending || (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED)){ 844 return; 845 } 846 847 if (hfp_connection->send_microphone_gain){ 848 hfp_connection->send_microphone_gain = 0; 849 hfp_connection->ok_pending = 1; 850 hfp_hf_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 851 return; 852 } 853 854 if (hfp_connection->send_speaker_gain){ 855 hfp_connection->send_speaker_gain = 0; 856 hfp_connection->ok_pending = 1; 857 hfp_hf_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 858 return; 859 } 860 861 if (hfp_connection->hf_deactivate_calling_line_notification){ 862 hfp_connection->hf_deactivate_calling_line_notification = 0; 863 hfp_connection->ok_pending = 1; 864 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 0); 865 return; 866 } 867 868 if (hfp_connection->hf_activate_calling_line_notification){ 869 hfp_connection->hf_activate_calling_line_notification = 0; 870 hfp_connection->ok_pending = 1; 871 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 1); 872 return; 873 } 874 875 if (hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction){ 876 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 0; 877 hfp_connection->response_pending_for_command = HFP_CMD_TURN_OFF_EC_AND_NR; 878 hfp_connection->ok_pending = 1; 879 hfp_hf_send_cmd_with_int(hfp_connection->rfcomm_cid, HFP_TURN_OFF_EC_AND_NR, 0); 880 return; 881 } 882 883 if (hfp_connection->hf_deactivate_call_waiting_notification){ 884 hfp_connection->hf_deactivate_call_waiting_notification = 0; 885 hfp_connection->ok_pending = 1; 886 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 0); 887 return; 888 } 889 890 if (hfp_connection->hf_activate_call_waiting_notification){ 891 hfp_connection->hf_activate_call_waiting_notification = 0; 892 hfp_connection->ok_pending = 1; 893 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 1); 894 return; 895 } 896 897 if (hfp_connection->hf_initiate_outgoing_call){ 898 hfp_connection->hf_initiate_outgoing_call = 0; 899 hfp_connection->ok_pending = 1; 900 hfp_hf_initiate_outgoing_call_cmd(hfp_connection->rfcomm_cid); 901 return; 902 } 903 904 if (hfp_connection->hf_initiate_memory_dialing){ 905 hfp_connection->hf_initiate_memory_dialing = 0; 906 hfp_connection->ok_pending = 1; 907 hfp_hf_send_memory_dial_cmd(hfp_connection->rfcomm_cid, hfp_connection->memory_id); 908 return; 909 } 910 911 if (hfp_connection->hf_initiate_redial_last_number){ 912 hfp_connection->hf_initiate_redial_last_number = 0; 913 hfp_connection->ok_pending = 1; 914 hfp_hf_send_redial_last_number_cmd(hfp_connection->rfcomm_cid); 915 return; 916 } 917 918 if (hfp_connection->hf_send_chup){ 919 hfp_connection->hf_send_chup = 0; 920 hfp_connection->ok_pending = 1; 921 hfp_hf_send_chup(hfp_connection->rfcomm_cid); 922 return; 923 } 924 925 if (hfp_connection->hf_send_chld_0){ 926 hfp_connection->hf_send_chld_0 = 0; 927 hfp_connection->ok_pending = 1; 928 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 0); 929 return; 930 } 931 932 if (hfp_connection->hf_send_chld_1){ 933 hfp_connection->hf_send_chld_1 = 0; 934 hfp_connection->ok_pending = 1; 935 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 1); 936 return; 937 } 938 939 if (hfp_connection->hf_send_chld_2){ 940 hfp_connection->hf_send_chld_2 = 0; 941 hfp_connection->ok_pending = 1; 942 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 2); 943 return; 944 } 945 946 if (hfp_connection->hf_send_chld_3){ 947 hfp_connection->hf_send_chld_3 = 0; 948 hfp_connection->ok_pending = 1; 949 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 3); 950 return; 951 } 952 953 if (hfp_connection->hf_send_chld_4){ 954 hfp_connection->hf_send_chld_4 = 0; 955 hfp_connection->ok_pending = 1; 956 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 4); 957 return; 958 } 959 960 if (hfp_connection->hf_send_chld_x){ 961 hfp_connection->hf_send_chld_x = 0; 962 hfp_connection->ok_pending = 1; 963 hfp_hf_send_chld(hfp_connection->rfcomm_cid, hfp_connection->hf_send_chld_x_index); 964 return; 965 } 966 967 if (hfp_connection->hf_send_dtmf_code){ 968 char code = hfp_connection->hf_send_dtmf_code; 969 hfp_connection->hf_send_dtmf_code = 0; 970 hfp_connection->ok_pending = 1; 971 hfp_hf_send_dtmf(hfp_connection->rfcomm_cid, code); 972 // notify client that dtmf was sent 973 char buffer[2]; 974 buffer[0] = code; 975 buffer[1] = 0; 976 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 977 return; 978 } 979 980 if (hfp_connection->hf_send_binp){ 981 hfp_connection->hf_send_binp = 0; 982 hfp_connection->ok_pending = 1; 983 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 984 return; 985 } 986 987 if (hfp_connection->hf_send_clcc){ 988 hfp_connection->hf_send_clcc = 0; 989 hfp_connection->ok_pending = 1; 990 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 991 return; 992 } 993 994 if (hfp_connection->hf_send_rrh){ 995 hfp_connection->hf_send_rrh = 0; 996 char buffer[20]; 997 switch (hfp_connection->hf_send_rrh_command){ 998 case '?': 999 snprintf(buffer, sizeof(buffer), "AT%s?\r", 1000 HFP_RESPONSE_AND_HOLD); 1001 buffer[sizeof(buffer) - 1] = 0; 1002 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1003 return; 1004 case '0': 1005 case '1': 1006 case '2': 1007 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", 1008 HFP_RESPONSE_AND_HOLD, 1009 hfp_connection->hf_send_rrh_command); 1010 buffer[sizeof(buffer) - 1] = 0; 1011 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1012 return; 1013 default: 1014 break; 1015 } 1016 return; 1017 } 1018 1019 if (hfp_connection->hf_send_cnum){ 1020 hfp_connection->hf_send_cnum = 0; 1021 char buffer[20]; 1022 snprintf(buffer, sizeof(buffer), "AT%s\r", 1023 HFP_SUBSCRIBER_NUMBER_INFORMATION); 1024 buffer[sizeof(buffer) - 1] = 0; 1025 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1026 return; 1027 } 1028 1029 // update HF indicators 1030 if (hfp_connection->generic_status_update_bitmap){ 1031 int i; 1032 for (i=0; i < hfp_hf_indicators_nr; i++){ 1033 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 1034 if (hfp_connection->generic_status_indicators[i].state){ 1035 hfp_connection->ok_pending = 1; 1036 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 1037 char buffer[30]; 1038 snprintf(buffer, sizeof(buffer), "AT%s=%u,%u\r", 1039 HFP_TRANSFER_HF_INDICATOR_STATUS, 1040 hfp_hf_indicators[i], 1041 (unsigned int)hfp_hf_indicators_value[i]); 1042 buffer[sizeof(buffer) - 1] = 0; 1043 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1044 } else { 1045 log_info("Not sending HF indicator %u as it is disabled", hfp_hf_indicators[i]); 1046 } 1047 return; 1048 } 1049 } 1050 } 1051 1052 if (hfp_connection->send_custom_message != NULL){ 1053 const char * message = hfp_connection->send_custom_message; 1054 hfp_connection->send_custom_message = NULL; 1055 hfp_connection->ok_pending = 1; 1056 hfp_connection->response_pending_for_command = HFP_CMD_CUSTOM_MESSAGE; 1057 send_str_over_rfcomm(hfp_connection->rfcomm_cid, message); 1058 return; 1059 } 1060 1061 if (done) return; 1062 // deal with disconnect 1063 switch (hfp_connection->state){ 1064 case HFP_W2_DISCONNECT_RFCOMM: 1065 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1066 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1067 break; 1068 1069 default: 1070 break; 1071 } 1072 } 1073 1074 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 1075 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 1076 1077 hfp_emit_slc_connection_event(hfp_connection->local_role, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 1078 1079 uint8_t i; 1080 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1081 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1082 } 1083 1084 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1085 hfp_connection->ag_indicators[i].status_changed = 0; 1086 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1087 } 1088 1089 // restore volume settings 1090 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 1091 hfp_connection->send_speaker_gain = 1; 1092 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 1093 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 1094 hfp_connection->send_microphone_gain = 1; 1095 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 1096 // enable all indicators 1097 for (i=0; i < hfp_hf_indicators_nr; i++){ 1098 hfp_connection->generic_status_indicators[i].uuid = hfp_hf_indicators[i]; 1099 hfp_connection->generic_status_indicators[i].state = 1; 1100 } 1101 } 1102 1103 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 1104 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_hf_codecs_nr, hfp_hf_codecs)){ 1105 // Codec supported, confirm 1106 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1107 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1108 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 1109 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 1110 1111 hfp_connection->hf_send_codec_confirm = true; 1112 } else { 1113 // Codec not supported, send supported codecs 1114 hfp_connection->codec_confirmed = 0; 1115 hfp_connection->suggested_codec = 0; 1116 hfp_connection->negotiated_codec = 0; 1117 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1118 1119 hfp_connection->hf_send_supported_codecs = true; 1120 } 1121 } 1122 1123 static bool hfp_hf_switch_on_ok_pending(hfp_connection_t *hfp_connection, uint8_t status){ 1124 bool event_emited = true; 1125 1126 // cache state and reset 1127 hfp_command_t response_pending_for_command = hfp_connection->response_pending_for_command; 1128 hfp_connection->response_pending_for_command = HFP_CMD_NONE; 1129 hfp_connection->command = HFP_CMD_NONE; 1130 hfp_connection->ok_pending = 0; 1131 1132 switch (response_pending_for_command){ 1133 case HFP_CMD_TURN_OFF_EC_AND_NR: 1134 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 1135 break; 1136 case HFP_CMD_CUSTOM_MESSAGE: 1137 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, status); 1138 break; 1139 default: 1140 event_emited = false; 1141 1142 switch (hfp_connection->state){ 1143 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 1144 if (has_codec_negotiation_feature(hfp_connection)){ 1145 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 1146 break; 1147 } 1148 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1149 break; 1150 1151 case HFP_W4_NOTIFY_ON_CODECS: 1152 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1153 break; 1154 1155 case HFP_W4_RETRIEVE_INDICATORS: 1156 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 1157 break; 1158 1159 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 1160 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 1161 break; 1162 1163 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 1164 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 1165 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 1166 break; 1167 } 1168 if (has_hf_indicators_feature(hfp_connection)){ 1169 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1170 break; 1171 } 1172 hfp_ag_slc_established(hfp_connection); 1173 break; 1174 1175 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 1176 if (has_hf_indicators_feature(hfp_connection)){ 1177 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1178 break; 1179 } 1180 hfp_ag_slc_established(hfp_connection); 1181 break; 1182 1183 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 1184 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 1185 break; 1186 1187 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 1188 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 1189 break; 1190 1191 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 1192 hfp_ag_slc_established(hfp_connection); 1193 break; 1194 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1195 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 1196 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 1197 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_SUCCESS); 1198 break; 1199 } 1200 1201 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 1202 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 1203 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_SUCCESS); 1204 break; 1205 } 1206 1207 switch (hfp_connection->hf_query_operator_state){ 1208 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 1209 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1210 break; 1211 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 1212 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 1213 hfp_emit_network_operator_event(hfp_connection); 1214 break; 1215 default: 1216 break; 1217 } 1218 1219 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1220 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1221 break; 1222 } 1223 1224 switch (hfp_connection->codecs_state){ 1225 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1226 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1227 break; 1228 case HFP_CODECS_HF_CONFIRMED_CODEC: 1229 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1230 break; 1231 default: 1232 break; 1233 } 1234 hfp_hf_voice_recognition_state_machine(hfp_connection); 1235 break; 1236 case HFP_AUDIO_CONNECTION_ESTABLISHED: 1237 hfp_hf_voice_recognition_state_machine(hfp_connection); 1238 break; 1239 default: 1240 break; 1241 } 1242 break; 1243 } 1244 1245 return event_emited; 1246 } 1247 1248 static bool hfp_is_ringing(hfp_callsetup_status_t callsetup_status){ 1249 switch (callsetup_status){ 1250 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1251 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1252 return true; 1253 default: 1254 return false; 1255 } 1256 } 1257 1258 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1259 uint16_t i; 1260 1261 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1262 if (hfp_connection->ag_indicators[i].status_changed) { 1263 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1264 hfp_callsetup_status_t new_hf_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1265 bool ringing_old = hfp_is_ringing(hfp_hf_callsetup_status); 1266 bool ringing_new = hfp_is_ringing(new_hf_callsetup_status); 1267 if (ringing_old != ringing_new){ 1268 if (ringing_new){ 1269 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGING); 1270 } else { 1271 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGING); 1272 } 1273 } 1274 hfp_hf_callsetup_status = new_hf_callsetup_status; 1275 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1276 hfp_hf_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1277 // avoid set but not used warning 1278 (void) hfp_hf_callheld_status; 1279 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1280 hfp_call_status_t new_hf_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1281 if (hfp_hf_call_status != new_hf_call_status){ 1282 if (new_hf_call_status == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 1283 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1284 } else { 1285 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1286 } 1287 } 1288 hfp_hf_call_status = new_hf_call_status; 1289 } 1290 hfp_connection->ag_indicators[i].status_changed = 0; 1291 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1292 break; 1293 } 1294 } 1295 } 1296 1297 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1298 int value; 1299 int i; 1300 bool event_emited; 1301 1302 // last argument is still in line_buffer 1303 1304 switch (hfp_connection->command){ 1305 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1306 hfp_connection->command = HFP_CMD_NONE; 1307 hfp_hf_emit_subscriber_information(hfp_connection, 0); 1308 break; 1309 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1310 hfp_connection->command = HFP_CMD_NONE; 1311 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1312 break; 1313 case HFP_CMD_LIST_CURRENT_CALLS: 1314 hfp_connection->command = HFP_CMD_NONE; 1315 hfp_hf_emit_enhanced_call_status(hfp_connection); 1316 break; 1317 case HFP_CMD_SET_SPEAKER_GAIN: 1318 hfp_connection->command = HFP_CMD_NONE; 1319 value = btstack_atoi((char*)hfp_connection->line_buffer); 1320 hfp_hf_speaker_gain = value; 1321 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1322 break; 1323 case HFP_CMD_SET_MICROPHONE_GAIN: 1324 hfp_connection->command = HFP_CMD_NONE; 1325 value = btstack_atoi((char*)hfp_connection->line_buffer); 1326 hfp_hf_microphone_gain = value; 1327 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1328 break; 1329 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1330 hfp_connection->command = HFP_CMD_NONE; 1331 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1332 break; 1333 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1334 hfp_connection->command = HFP_CMD_NONE; 1335 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION); 1336 break; 1337 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1338 hfp_connection->command = HFP_CMD_NONE; 1339 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION); 1340 break; 1341 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1342 hfp_connection->command = HFP_CMD_NONE; 1343 hfp_connection->ok_pending = 0; 1344 hfp_connection->extended_audio_gateway_error = 0; 1345 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1346 break; 1347 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 1348 break; 1349 case HFP_CMD_ERROR: 1350 switch (hfp_connection->state){ 1351 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1352 switch (hfp_connection->codecs_state){ 1353 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1354 hfp_reset_context_flags(hfp_connection); 1355 hfp_emit_sco_event(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 0, hfp_connection->remote_addr, hfp_connection->negotiated_codec); 1356 return; 1357 default: 1358 break; 1359 } 1360 break; 1361 default: 1362 break; 1363 } 1364 1365 // handle error response for voice activation (HF initiated) 1366 switch(hfp_connection->vra_state_requested){ 1367 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1368 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1369 break; 1370 default: 1371 if (hfp_connection->vra_state_requested == hfp_connection->vra_state){ 1372 break; 1373 } 1374 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1375 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1376 hfp_reset_context_flags(hfp_connection); 1377 return; 1378 } 1379 event_emited = hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1380 if (!event_emited){ 1381 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_UNSPECIFIED_ERROR); 1382 } 1383 hfp_reset_context_flags(hfp_connection); 1384 break; 1385 1386 case HFP_CMD_OK: 1387 hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_SUCCESS); 1388 break; 1389 case HFP_CMD_RING: 1390 hfp_connection->command = HFP_CMD_NONE; 1391 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1392 break; 1393 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1394 hfp_connection->command = HFP_CMD_NONE; 1395 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1396 break; 1397 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1398 hfp_connection->command = HFP_CMD_NONE; 1399 // report status after SLC established 1400 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 1401 break; 1402 } 1403 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1404 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1405 } 1406 break; 1407 case HFP_CMD_AG_SUGGESTED_CODEC: 1408 hfp_connection->command = HFP_CMD_NONE; 1409 hfp_hf_handle_suggested_codec(hfp_connection); 1410 break; 1411 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1412 hfp_emit_event(hfp_connection, HFP_SUBEVENT_IN_BAND_RING_TONE, get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE)); 1413 default: 1414 break; 1415 } 1416 } 1417 1418 static int hfp_parser_is_end_of_line(uint8_t byte){ 1419 return (byte == '\n') || (byte == '\r'); 1420 } 1421 1422 static void hfp_hf_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 1423 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1424 if (size < 1) return; 1425 1426 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1427 #ifdef ENABLE_HFP_AT_MESSAGES 1428 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1429 #endif 1430 1431 // process messages byte-wise 1432 uint8_t pos; 1433 for (pos = 0; pos < size; pos++){ 1434 hfp_parse(hfp_connection, packet[pos], 1); 1435 // parse until end of line "\r" or "\n" 1436 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1437 hfp_hf_handle_rfcomm_command(hfp_connection); 1438 } 1439 } 1440 1441 static void hfp_hf_run(void){ 1442 btstack_linked_list_iterator_t it; 1443 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1444 while (btstack_linked_list_iterator_has_next(&it)){ 1445 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1446 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1447 hfp_hf_run_for_context(hfp_connection); 1448 } 1449 } 1450 1451 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1452 hfp_connection_t * hfp_connection; 1453 switch (packet_type){ 1454 case RFCOMM_DATA_PACKET: 1455 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1456 if (!hfp_connection) return; 1457 hfp_hf_handle_rfcomm_data(hfp_connection, packet, size); 1458 hfp_hf_run_for_context(hfp_connection); 1459 return; 1460 case HCI_EVENT_PACKET: 1461 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1462 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1463 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1464 return; 1465 } 1466 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1467 break; 1468 default: 1469 break; 1470 } 1471 hfp_hf_run(); 1472 } 1473 1474 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1475 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1476 hfp_hf_run(); 1477 } 1478 1479 static void hfp_hf_set_defaults(void){ 1480 hfp_hf_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1481 hfp_hf_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1482 hfp_hf_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1483 hfp_hf_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1484 hfp_hf_codecs_nr = 0; 1485 hfp_hf_speaker_gain = 9; 1486 hfp_hf_microphone_gain = 9; 1487 hfp_hf_indicators_nr = 0; 1488 } 1489 1490 uint8_t hfp_hf_init(uint8_t rfcomm_channel_nr){ 1491 uint8_t status = rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1492 if (status != ERROR_CODE_SUCCESS){ 1493 return status; 1494 } 1495 1496 hfp_init(); 1497 hfp_hf_set_defaults(); 1498 1499 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1500 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1501 1502 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1503 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1504 return ERROR_CODE_SUCCESS; 1505 } 1506 1507 void hfp_hf_deinit(void){ 1508 hfp_deinit(); 1509 hfp_hf_set_defaults(); 1510 1511 hfp_hf_callback = NULL; 1512 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1513 (void) memset(hfp_hf_phone_number, 0, sizeof(hfp_hf_phone_number)); 1514 } 1515 1516 void hfp_hf_init_codecs(int codecs_nr, const uint8_t * codecs){ 1517 btstack_assert(codecs_nr < HFP_MAX_NUM_CODECS); 1518 1519 hfp_hf_codecs_nr = codecs_nr; 1520 int i; 1521 for (i=0; i<codecs_nr; i++){ 1522 hfp_hf_codecs[i] = codecs[i]; 1523 } 1524 } 1525 1526 void hfp_hf_init_supported_features(uint32_t supported_features){ 1527 hfp_hf_supported_features = supported_features; 1528 } 1529 1530 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1531 btstack_assert(hfp_hf_indicators_nr < HFP_MAX_NUM_INDICATORS); 1532 1533 hfp_hf_indicators_nr = indicators_nr; 1534 int i; 1535 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 1536 hfp_hf_indicators[i] = (uint8_t) indicators[i]; 1537 } 1538 } 1539 1540 uint8_t hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1541 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1542 } 1543 1544 uint8_t hfp_hf_release_service_level_connection(hci_con_handle_t acl_handle){ 1545 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1546 if (!hfp_connection){ 1547 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1548 } 1549 hfp_trigger_release_service_level_connection(hfp_connection); 1550 hfp_hf_run_for_context(hfp_connection); 1551 return ERROR_CODE_SUCCESS; 1552 } 1553 1554 static uint8_t hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1555 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1556 if (!hfp_connection) { 1557 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1558 } 1559 hfp_connection->enable_status_update_for_ag_indicators = enable; 1560 hfp_hf_run_for_context(hfp_connection); 1561 return ERROR_CODE_SUCCESS; 1562 } 1563 1564 uint8_t hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1565 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1566 } 1567 1568 uint8_t hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1569 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1570 } 1571 1572 // TODO: returned ERROR - wrong format 1573 uint8_t hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1574 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1575 if (!hfp_connection) { 1576 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1577 } 1578 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1579 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1580 hfp_hf_run_for_context(hfp_connection); 1581 return ERROR_CODE_SUCCESS; 1582 } 1583 1584 uint8_t hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 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 1590 switch (hfp_connection->hf_query_operator_state){ 1591 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1592 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1593 break; 1594 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1595 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1596 break; 1597 default: 1598 return ERROR_CODE_COMMAND_DISALLOWED; 1599 } 1600 hfp_hf_run_for_context(hfp_connection); 1601 return ERROR_CODE_SUCCESS; 1602 } 1603 1604 static uint8_t hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1605 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1606 if (!hfp_connection) { 1607 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1608 } 1609 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1610 hfp_hf_run_for_context(hfp_connection); 1611 return ERROR_CODE_SUCCESS; 1612 } 1613 1614 1615 uint8_t hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1616 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1617 } 1618 1619 uint8_t hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1620 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1621 } 1622 1623 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1624 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_hf_supported_features & (1 << HFP_HFSF_ESCO_S4)); 1625 } 1626 1627 uint8_t hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1628 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1629 if (!hfp_connection) { 1630 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1631 } 1632 1633 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1634 return ERROR_CODE_COMMAND_DISALLOWED; 1635 } 1636 1637 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 1638 return ERROR_CODE_COMMAND_DISALLOWED; 1639 } 1640 if (has_codec_negotiation_feature(hfp_connection)) { 1641 switch (hfp_connection->codecs_state) { 1642 case HFP_CODECS_W4_AG_COMMON_CODEC: 1643 break; 1644 case HFP_CODECS_EXCHANGED: 1645 hfp_connection->trigger_codec_exchange = 1; 1646 break; 1647 default: 1648 hfp_connection->codec_confirmed = 0; 1649 hfp_connection->suggested_codec = 0; 1650 hfp_connection->negotiated_codec = 0; 1651 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1652 hfp_connection->trigger_codec_exchange = 1; 1653 break; 1654 } 1655 } else { 1656 log_info("no codec negotiation feature, use CVSD"); 1657 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1658 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1659 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1660 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1661 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1662 hfp_connection->establish_audio_connection = 1; 1663 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1664 } 1665 1666 hfp_hf_run_for_context(hfp_connection); 1667 return ERROR_CODE_SUCCESS; 1668 } 1669 1670 uint8_t hfp_hf_release_audio_connection(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 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 1676 return ERROR_CODE_COMMAND_DISALLOWED; 1677 } 1678 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 1679 if (status == ERROR_CODE_SUCCESS){ 1680 hfp_hf_run_for_context(hfp_connection); 1681 } 1682 return ERROR_CODE_SUCCESS; 1683 } 1684 1685 uint8_t hfp_hf_answer_incoming_call(hci_con_handle_t acl_handle){ 1686 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1687 if (!hfp_connection) { 1688 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1689 } 1690 1691 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1692 hfp_connection->hf_answer_incoming_call = 1; 1693 hfp_hf_run_for_context(hfp_connection); 1694 } else { 1695 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_hf_callsetup_status); 1696 return ERROR_CODE_COMMAND_DISALLOWED; 1697 } 1698 return ERROR_CODE_SUCCESS; 1699 } 1700 1701 uint8_t hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1702 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1703 if (!hfp_connection) { 1704 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1705 } 1706 hfp_connection->hf_send_chup = 1; 1707 hfp_hf_run_for_context(hfp_connection); 1708 return ERROR_CODE_SUCCESS; 1709 } 1710 1711 uint8_t hfp_hf_reject_incoming_call(hci_con_handle_t acl_handle){ 1712 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1713 if (!hfp_connection) { 1714 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1715 } 1716 1717 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1718 hfp_connection->hf_send_chup = 1; 1719 hfp_hf_run_for_context(hfp_connection); 1720 } 1721 return ERROR_CODE_SUCCESS; 1722 } 1723 1724 uint8_t hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1725 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1726 if (!hfp_connection) { 1727 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1728 } 1729 1730 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1731 hfp_connection->hf_send_chld_0 = 1; 1732 hfp_hf_run_for_context(hfp_connection); 1733 } 1734 return ERROR_CODE_SUCCESS; 1735 } 1736 1737 uint8_t hfp_hf_terminate_held_calls(hci_con_handle_t acl_handle){ 1738 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1739 if (!hfp_connection) { 1740 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1741 } 1742 1743 hfp_connection->hf_send_chld_0 = 1; 1744 hfp_hf_run_for_context(hfp_connection); 1745 1746 return ERROR_CODE_SUCCESS; 1747 } 1748 1749 uint8_t hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1750 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1751 if (!hfp_connection) { 1752 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1753 } 1754 1755 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1756 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1757 hfp_connection->hf_send_chld_1 = 1; 1758 hfp_hf_run_for_context(hfp_connection); 1759 } 1760 return ERROR_CODE_SUCCESS; 1761 } 1762 1763 uint8_t hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1764 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1765 if (!hfp_connection) { 1766 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1767 } 1768 1769 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1770 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1771 hfp_connection->hf_send_chld_2 = 1; 1772 hfp_hf_run_for_context(hfp_connection); 1773 } 1774 return ERROR_CODE_SUCCESS; 1775 } 1776 1777 uint8_t hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1778 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1779 if (!hfp_connection) { 1780 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1781 } 1782 1783 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1784 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1785 hfp_connection->hf_send_chld_3 = 1; 1786 hfp_hf_run_for_context(hfp_connection); 1787 } 1788 return ERROR_CODE_SUCCESS; 1789 } 1790 1791 uint8_t hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1792 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1793 if (!hfp_connection) { 1794 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1795 } 1796 1797 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1798 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1799 hfp_connection->hf_send_chld_4 = 1; 1800 hfp_hf_run_for_context(hfp_connection); 1801 } 1802 return ERROR_CODE_SUCCESS; 1803 } 1804 1805 uint8_t hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1806 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1807 if (!hfp_connection) { 1808 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1809 } 1810 1811 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1812 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1813 hfp_connection->hf_send_chld_x = 1; 1814 hfp_connection->hf_send_chld_x_index = 10 + index; 1815 hfp_hf_run_for_context(hfp_connection); 1816 } 1817 return ERROR_CODE_SUCCESS; 1818 } 1819 1820 uint8_t hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 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 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1827 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1828 hfp_connection->hf_send_chld_x = 1; 1829 hfp_connection->hf_send_chld_x_index = 20 + index; 1830 hfp_hf_run_for_context(hfp_connection); 1831 } 1832 return ERROR_CODE_SUCCESS; 1833 } 1834 1835 uint8_t hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 1836 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1837 if (!hfp_connection) { 1838 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1839 } 1840 1841 hfp_connection->hf_initiate_outgoing_call = 1; 1842 snprintf(hfp_hf_phone_number, sizeof(hfp_hf_phone_number), "%s", number); 1843 hfp_hf_run_for_context(hfp_connection); 1844 return ERROR_CODE_SUCCESS; 1845 } 1846 1847 uint8_t hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 1848 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1849 if (!hfp_connection) { 1850 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1851 } 1852 1853 hfp_connection->hf_initiate_memory_dialing = 1; 1854 hfp_connection->memory_id = memory_id; 1855 1856 hfp_hf_run_for_context(hfp_connection); 1857 return ERROR_CODE_SUCCESS; 1858 } 1859 1860 uint8_t hfp_hf_redial_last_number(hci_con_handle_t acl_handle){ 1861 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1862 if (!hfp_connection) { 1863 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1864 } 1865 1866 hfp_connection->hf_initiate_redial_last_number = 1; 1867 hfp_hf_run_for_context(hfp_connection); 1868 return ERROR_CODE_SUCCESS; 1869 } 1870 1871 uint8_t hfp_hf_activate_call_waiting_notification(hci_con_handle_t acl_handle){ 1872 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1873 if (!hfp_connection) { 1874 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1875 } 1876 1877 hfp_connection->hf_activate_call_waiting_notification = 1; 1878 hfp_hf_run_for_context(hfp_connection); 1879 return ERROR_CODE_SUCCESS; 1880 } 1881 1882 1883 uint8_t hfp_hf_deactivate_call_waiting_notification(hci_con_handle_t acl_handle){ 1884 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1885 if (!hfp_connection) { 1886 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1887 } 1888 1889 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1890 hfp_hf_run_for_context(hfp_connection); 1891 return ERROR_CODE_SUCCESS; 1892 } 1893 1894 1895 uint8_t hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1896 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1897 if (!hfp_connection) { 1898 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1899 } 1900 1901 hfp_connection->hf_activate_calling_line_notification = 1; 1902 hfp_hf_run_for_context(hfp_connection); 1903 return ERROR_CODE_SUCCESS; 1904 } 1905 1906 uint8_t hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1907 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1908 if (!hfp_connection) { 1909 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1910 } 1911 1912 hfp_connection->hf_deactivate_calling_line_notification = 1; 1913 hfp_hf_run_for_context(hfp_connection); 1914 return ERROR_CODE_SUCCESS; 1915 } 1916 1917 static bool hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection_t * hfp_connection){ 1918 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_EC_NR_FUNCTION); 1919 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_EC_NR_FUNCTION); 1920 return hf && ag; 1921 } 1922 1923 uint8_t hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1924 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1925 if (!hfp_connection) { 1926 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1927 } 1928 if (!hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection)){ 1929 return ERROR_CODE_COMMAND_DISALLOWED; 1930 } 1931 1932 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1933 hfp_hf_run_for_context(hfp_connection); 1934 return ERROR_CODE_SUCCESS; 1935 } 1936 1937 uint8_t hfp_hf_activate_voice_recognition(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 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1943 return ERROR_CODE_COMMAND_DISALLOWED; 1944 } 1945 1946 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1947 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1948 if (!enhanced_vra_supported && !legacy_vra_supported){ 1949 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1950 } 1951 1952 switch (hfp_connection->vra_state){ 1953 case HFP_VRA_VOICE_RECOGNITION_OFF: 1954 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1955 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 1956 hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 1957 break; 1958 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1959 hfp_connection->activate_voice_recognition = true; 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 uint8_t hfp_hf_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 1970 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1971 if (!hfp_connection) { 1972 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1973 } 1974 1975 if (hfp_connection->emit_vra_enabled_after_audio_established){ 1976 return ERROR_CODE_COMMAND_DISALLOWED; 1977 } 1978 1979 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 1980 return ERROR_CODE_COMMAND_DISALLOWED; 1981 } 1982 1983 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1984 if (!enhanced_vra_supported){ 1985 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1986 } 1987 1988 switch (hfp_connection->vra_state){ 1989 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 1990 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1991 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 1992 break; 1993 default: 1994 return ERROR_CODE_COMMAND_DISALLOWED; 1995 } 1996 1997 hfp_hf_run_for_context(hfp_connection); 1998 return ERROR_CODE_SUCCESS; 1999 } 2000 2001 2002 uint8_t hfp_hf_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2003 // return deactivate_voice_recognition(acl_handle, false); 2004 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2005 if (!hfp_connection) { 2006 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2007 } 2008 2009 if (hfp_connection->emit_vra_enabled_after_audio_established){ 2010 return ERROR_CODE_COMMAND_DISALLOWED; 2011 } 2012 2013 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 2014 hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 2015 return ERROR_CODE_COMMAND_DISALLOWED; 2016 } 2017 2018 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 2019 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 2020 if (!enhanced_vra_supported && !legacy_vra_supported){ 2021 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2022 } 2023 2024 switch (hfp_connection->vra_state){ 2025 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 2026 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 2027 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2028 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2029 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2030 break; 2031 2032 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 2033 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2034 hfp_connection->deactivate_voice_recognition = true; 2035 break; 2036 2037 case HFP_VRA_VOICE_RECOGNITION_OFF: 2038 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 2039 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 2040 default: 2041 return ERROR_CODE_COMMAND_DISALLOWED; 2042 } 2043 2044 hfp_hf_run_for_context(hfp_connection); 2045 return ERROR_CODE_SUCCESS; 2046 } 2047 2048 uint8_t hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2049 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2050 if (!hfp_connection) { 2051 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2052 } 2053 2054 if (hfp_connection->microphone_gain == gain) { 2055 return ERROR_CODE_SUCCESS; 2056 } 2057 2058 if ((gain < 0) || (gain > 15)){ 2059 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2060 return ERROR_CODE_COMMAND_DISALLOWED; 2061 } 2062 2063 hfp_connection->microphone_gain = gain; 2064 hfp_connection->send_microphone_gain = 1; 2065 hfp_hf_run_for_context(hfp_connection); 2066 return ERROR_CODE_SUCCESS; 2067 } 2068 2069 uint8_t hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2070 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2071 if (!hfp_connection) { 2072 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2073 } 2074 2075 if (hfp_connection->speaker_gain == gain){ 2076 return ERROR_CODE_SUCCESS; 2077 } 2078 2079 if ((gain < 0) || (gain > 15)){ 2080 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2081 return ERROR_CODE_COMMAND_DISALLOWED; 2082 } 2083 2084 hfp_connection->speaker_gain = gain; 2085 hfp_connection->send_speaker_gain = 1; 2086 hfp_hf_run_for_context(hfp_connection); 2087 return ERROR_CODE_SUCCESS; 2088 } 2089 2090 uint8_t hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 2091 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2092 if (!hfp_connection) { 2093 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2094 } 2095 hfp_connection->hf_send_dtmf_code = code; 2096 hfp_hf_run_for_context(hfp_connection); 2097 return ERROR_CODE_SUCCESS; 2098 } 2099 2100 uint8_t hfp_hf_request_phone_number_for_voice_tag(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_binp = 1; 2106 hfp_hf_run_for_context(hfp_connection); 2107 return ERROR_CODE_SUCCESS; 2108 } 2109 2110 uint8_t hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 2111 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2112 if (!hfp_connection) { 2113 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2114 } 2115 hfp_connection->hf_send_clcc = 1; 2116 hfp_hf_run_for_context(hfp_connection); 2117 return ERROR_CODE_SUCCESS; 2118 } 2119 2120 2121 uint8_t hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 2122 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2123 if (!hfp_connection) { 2124 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2125 } 2126 hfp_connection->hf_send_rrh = 1; 2127 hfp_connection->hf_send_rrh_command = '?'; 2128 hfp_hf_run_for_context(hfp_connection); 2129 return ERROR_CODE_SUCCESS; 2130 } 2131 2132 uint8_t hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 2133 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2134 if (!hfp_connection) { 2135 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2136 } 2137 hfp_connection->hf_send_rrh = 1; 2138 hfp_connection->hf_send_rrh_command = '0'; 2139 hfp_hf_run_for_context(hfp_connection); 2140 return ERROR_CODE_SUCCESS; 2141 } 2142 2143 uint8_t hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 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 hfp_connection->hf_send_rrh = 1; 2149 hfp_connection->hf_send_rrh_command = '1'; 2150 hfp_hf_run_for_context(hfp_connection); 2151 return ERROR_CODE_SUCCESS; 2152 } 2153 2154 uint8_t hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 2155 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2156 if (!hfp_connection) { 2157 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2158 } 2159 hfp_connection->hf_send_rrh = 1; 2160 hfp_connection->hf_send_rrh_command = '2'; 2161 hfp_hf_run_for_context(hfp_connection); 2162 return ERROR_CODE_SUCCESS; 2163 } 2164 2165 uint8_t hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 2166 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2167 if (!hfp_connection) { 2168 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2169 } 2170 hfp_connection->hf_send_cnum = 1; 2171 hfp_hf_run_for_context(hfp_connection); 2172 return ERROR_CODE_SUCCESS; 2173 } 2174 2175 uint8_t hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 2176 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2177 if (!hfp_connection) { 2178 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2179 } 2180 // find index for assigned number 2181 int i; 2182 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 2183 if (hfp_hf_indicators[i] == assigned_number){ 2184 // set value 2185 hfp_hf_indicators_value[i] = value; 2186 // mark for update 2187 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 2188 hfp_connection->generic_status_update_bitmap |= (1<<i); 2189 // send update 2190 hfp_hf_run_for_context(hfp_connection); 2191 } 2192 return ERROR_CODE_SUCCESS; 2193 } 2194 } 2195 return ERROR_CODE_SUCCESS; 2196 } 2197 2198 uint8_t hfp_hf_send_at_command(hci_con_handle_t acl_handle, const char * at_command){ 2199 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2200 if (!hfp_connection) { 2201 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2202 } 2203 if (hfp_connection->send_custom_message != NULL){ 2204 return ERROR_CODE_COMMAND_DISALLOWED; 2205 } 2206 hfp_connection->send_custom_message = at_command; 2207 hfp_hf_run_for_context(hfp_connection); 2208 return ERROR_CODE_SUCCESS; 2209 } 2210 2211 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 2212 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2213 if (!hfp_connection) { 2214 return 0; 2215 } 2216 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 2217 } 2218 2219 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){ 2220 if (!name){ 2221 name = hfp_hf_default_service_name; 2222 } 2223 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 2224 2225 // Construct SupportedFeatures for SDP bitmap: 2226 // 2227 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2228 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2229 // 2230 // Wide band speech (bit 5) requires Codec negotiation 2231 // 2232 uint16_t sdp_features = supported_features & 0x1f; 2233 if ( (wide_band_speech != 0) && (supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION))){ 2234 sdp_features |= 1 << 5; 2235 } 2236 2237 if (supported_features & (1 << HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2238 sdp_features |= 1 << 6; 2239 } 2240 2241 if (supported_features & (1 << HFP_HFSF_VOICE_RECOGNITION_TEXT)){ 2242 sdp_features |= 1 << 7; 2243 } 2244 2245 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2246 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2247 } 2248 2249 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 2250 btstack_assert(callback != NULL); 2251 2252 hfp_hf_callback = callback; 2253 hfp_set_hf_callback(callback); 2254 } 2255