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_ag.c" 39 40 // ***************************************************************************** 41 // 42 // HFP Audio Gateway (AG) 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 "hci_cmd.h" 53 #include "btstack_run_loop.h" 54 55 #include "bluetooth_sdp.h" 56 #include "hci.h" 57 #include "btstack_memory.h" 58 #include "hci_dump.h" 59 #include "l2cap.h" 60 #include "btstack_debug.h" 61 #include "btstack_event.h" 62 #include "classic/core.h" 63 #include "classic/hfp.h" 64 #include "classic/hfp_ag.h" 65 #include "classic/hfp_gsm_model.h" 66 #include "classic/sdp_client_rfcomm.h" 67 #include "classic/sdp_server.h" 68 #include "classic/sdp_util.h" 69 70 // private prototypes 71 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection); 72 static void hfp_ag_hf_start_ringing_incoming(hfp_connection_t * hfp_connection); 73 static void hfp_ag_hf_start_ringing_outgoing(hfp_connection_t * hfp_connection); 74 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 75 76 // public prototypes 77 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 78 int get_hfp_generic_status_indicators_nr(void); 79 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 80 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 81 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 82 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 83 84 #define HFP_SUBEVENT_INVALID 0xFFFF 85 86 // const 87 static const char hfp_ag_default_service_name[] = "Voice gateway"; 88 89 // globals 90 91 // higher layer callbacks 92 static btstack_packet_handler_t hfp_ag_callback; 93 94 static bool (*hfp_ag_custom_call_sm_handler)(hfp_ag_call_event_t event); 95 96 static btstack_packet_callback_registration_t hfp_ag_hci_event_callback_registration; 97 98 static uint16_t hfp_ag_supported_features; 99 100 // in-band ring tone is active on SLC if supported 101 static bool hfp_ag_in_band_ring_tone_active; 102 103 // codecs 104 static uint8_t hfp_ag_codecs_nr; 105 static uint8_t hfp_ag_codecs[HFP_MAX_NUM_CODECS]; 106 107 // AG indicators 108 static uint16_t hfp_ag_indicators_nr; 109 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_INDICATORS]; 110 111 // generic status indicators 112 static uint16_t hfp_ag_generic_status_indicators_nr; 113 static hfp_generic_status_indicator_t hfp_ag_generic_status_indicators[HFP_MAX_NUM_INDICATORS]; 114 115 static uint16_t hfp_ag_call_hold_services_nr; 116 static char * hfp_ag_call_hold_services[6]; 117 118 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 119 static bool hfp_ag_response_and_hold_active = false; 120 121 // Subscriber information entries 122 static hfp_phone_number_t * hfp_ag_subscriber_numbers; 123 static int hfp_ag_subscriber_numbers_count; 124 125 // call state 126 static btstack_timer_source_t hfp_ag_ring_timeout; 127 128 // Apple extension 129 static const char * hfp_ag_apple_device; 130 static uint8_t hfp_ag_apple_features; 131 132 133 // code 134 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 135 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 136 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 137 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 138 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 139 } 140 return hfp_connection->ag_indicators_nr; 141 } 142 143 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 144 // TODO: save only value, and value changed in the hfp_connection? 145 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 146 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 147 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 148 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 149 } 150 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 151 } 152 153 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 154 int i; 155 for (i = 0; i < hfp_ag_indicators_nr; i++){ 156 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 157 return &hfp_ag_indicators[i]; 158 } 159 } 160 return NULL; 161 } 162 163 static int get_ag_indicator_index_for_name(const char * name){ 164 int i; 165 for (i = 0; i < hfp_ag_indicators_nr; i++){ 166 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 167 return i; 168 } 169 } 170 return -1; 171 } 172 173 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 174 btstack_linked_list_iterator_t it; 175 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 176 while (btstack_linked_list_iterator_has_next(&it)){ 177 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 178 if (hfp_connection->acl_handle != handle) continue; 179 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 180 return hfp_connection; 181 } 182 return NULL; 183 } 184 185 static bool has_in_band_ring_tone(void){ 186 return get_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE) != 0; 187 } 188 189 static int use_in_band_tone(hfp_connection_t *hfp_connection) { 190 return hfp_connection->ag_in_band_ring_tone_active ? 1 : 0; 191 } 192 193 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 194 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 195 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 196 return hf && ag; 197 } 198 199 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 200 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 201 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_THREE_WAY_CALLING); 202 return hf && ag; 203 } 204 205 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 206 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 207 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_HF_INDICATORS); 208 return hf && ag; 209 } 210 211 /* unsolicited responses */ 212 213 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection_t * hfp_connection){ 214 char buffer[40]; 215 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", 216 HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone(hfp_connection)); 217 buffer[sizeof(buffer) - 1] = 0; 218 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 219 } 220 221 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 222 char buffer[40]; 223 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n\r\nOK\r\n", 224 HFP_SUPPORTED_FEATURES, hfp_ag_supported_features); 225 buffer[sizeof(buffer) - 1] = 0; 226 return send_str_over_rfcomm(cid, buffer); 227 } 228 229 static int hfp_ag_send_ok(uint16_t cid){ 230 char buffer[10]; 231 snprintf(buffer, sizeof(buffer), "\r\nOK\r\n"); 232 buffer[sizeof(buffer) - 1] = 0; 233 return send_str_over_rfcomm(cid, buffer); 234 } 235 236 static int hfp_ag_send_ring(uint16_t cid){ 237 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 238 } 239 240 static int hfp_ag_send_no_carrier(uint16_t cid){ 241 char buffer[15]; 242 snprintf(buffer, sizeof(buffer), "\r\nNO CARRIER\r\n"); 243 buffer[sizeof(buffer) - 1] = 0; 244 return send_str_over_rfcomm(cid, buffer); 245 } 246 247 static int hfp_ag_send_clip(uint16_t cid){ 248 char buffer[50]; 249 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, 250 hfp_gsm_clip_number(), hfp_gsm_clip_type()); 251 buffer[sizeof(buffer) - 1] = 0; 252 return send_str_over_rfcomm(cid, buffer); 253 } 254 255 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 256 char buffer[50]; 257 snprintf(buffer, sizeof(buffer), "\r\n%s: ,\"%s\",%u, , \r\n", 258 HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 259 buffer[sizeof(buffer) - 1] = 0; 260 return send_str_over_rfcomm(cid, buffer); 261 } 262 263 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 264 char buffer[50]; 265 snprintf(buffer, sizeof(buffer), "\r\n%s: %s\r\n", 266 HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 267 buffer[sizeof(buffer) - 1] = 0; 268 return send_str_over_rfcomm(cid, buffer); 269 } 270 271 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 272 char buffer[50]; 273 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", 274 HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), 275 hfp_gsm_clip_type()); 276 buffer[sizeof(buffer) - 1] = 0; 277 return send_str_over_rfcomm(cid, buffer); 278 } 279 280 static int hfp_ag_send_error(uint16_t cid){ 281 char buffer[10]; 282 snprintf(buffer, sizeof(buffer), "\r\nERROR\r\n"); 283 buffer[sizeof(buffer) - 1] = 0; 284 return send_str_over_rfcomm(cid, buffer); 285 } 286 287 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 288 char buffer[20]; 289 snprintf(buffer, sizeof(buffer), "\r\n%s=%d\r\n", 290 HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 291 buffer[sizeof(buffer) - 1] = 0; 292 return send_str_over_rfcomm(cid, buffer); 293 } 294 295 static int hfp_ag_send_apple_information(uint16_t cid){ 296 char buffer[50]; 297 snprintf(buffer, sizeof(buffer), "\r\n%s:%s,%d\r\n", 298 HFP_APPLE_ACCESSORY_INFORMATION, hfp_ag_apple_device, hfp_ag_apple_features); 299 buffer[sizeof(buffer) - 1] = 0; 300 return send_str_over_rfcomm(cid, buffer); 301 } 302 303 // get size for indicator string 304 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 305 // template: ("$NAME",($MIN,$MAX)) 306 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 307 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 308 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 309 } 310 311 // store indicator 312 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer, uint16_t buffer_size){ 313 snprintf((char *)buffer, buffer_size, "(\"%s\",(%d,%d)),", 314 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 315 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 316 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 317 ((char *)buffer)[buffer_size - 1] = 0; 318 } 319 320 // structure: header [indicator [comma indicator]] footer 321 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 322 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 323 if (!num_indicators) return 2; 324 return 3 + ((num_indicators-1) * 2); 325 } 326 327 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 328 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 329 if (index == 0) { 330 return (uint16_t) strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 331 } 332 index--; 333 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 334 int indicator_index = index >> 1; 335 if ((index & 1) == 0){ 336 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 337 } 338 if (indicator_index == (num_indicators - 1)){ 339 return 8; // "\r\n\r\nOK\r\n" 340 } 341 return 1; // comma 342 } 343 344 static void hfp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer, uint16_t buffer_size){ 345 if (index == 0){ 346 *buffer++ = '\r'; 347 *buffer++ = '\n'; 348 int len = (uint16_t) strlen(HFP_INDICATOR); 349 (void)memcpy(buffer, HFP_INDICATOR, len); 350 buffer += len; 351 *buffer++ = ':'; 352 return; 353 } 354 index--; 355 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 356 int indicator_index = index >> 1; 357 if ((index & 1) == 0){ 358 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer, buffer_size); 359 return; 360 } 361 if (indicator_index == (num_indicators-1)){ 362 (void)memcpy(buffer, "\r\n\r\nOK\r\n", 8); 363 return; 364 } 365 *buffer = ','; 366 } 367 368 static int hfp_ag_generic_indicators_join(char * buffer, int buffer_size){ 369 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 370 int i; 371 int offset = 0; 372 for (i = 0; i < (hfp_ag_generic_status_indicators_nr - 1); i++) { 373 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_generic_status_indicators[i].uuid); 374 } 375 if (i < hfp_ag_generic_status_indicators_nr){ 376 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_generic_status_indicators[i].uuid); 377 } 378 return offset; 379 } 380 381 static int hfp_ag_generic_indicators_initial_status_join(char * buffer, int buffer_size){ 382 if (buffer_size < (hfp_ag_generic_status_indicators_nr * 3)) return 0; 383 int i; 384 int offset = 0; 385 for (i = 0; i < hfp_ag_generic_status_indicators_nr; i++) { 386 offset += snprintf(buffer+offset, buffer_size-offset, "\r\n%s:%d,%d\r\n", HFP_GENERIC_STATUS_INDICATOR, hfp_ag_generic_status_indicators[i].uuid, hfp_ag_generic_status_indicators[i].state); 387 } 388 return offset; 389 } 390 391 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 392 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 393 int i; 394 int offset = 0; 395 for (i = 0; i < (hfp_ag_indicators_nr-1); i++) { 396 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 397 } 398 if (i<hfp_ag_indicators_nr){ 399 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 400 } 401 return offset; 402 } 403 404 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 405 if (buffer_size < (hfp_ag_call_hold_services_nr * 3)) return 0; 406 int i; 407 int offset = snprintf(buffer, buffer_size, "("); 408 for (i = 0; i < (hfp_ag_call_hold_services_nr-1); i++) { 409 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 410 } 411 if (i<hfp_ag_call_hold_services_nr){ 412 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 413 } 414 return offset; 415 } 416 417 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 418 int start_segment, int num_segments, 419 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 420 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer, uint16_t buffer_size)){ 421 422 // assumes: can send now == true 423 // assumes: num segments > 0 424 // assumes: individual segments are smaller than MTU 425 rfcomm_reserve_packet_buffer(); 426 int mtu = rfcomm_get_max_frame_size(cid); 427 uint8_t * data = rfcomm_get_outgoing_buffer(); 428 int offset = 0; 429 int segment = start_segment; 430 while (segment < num_segments){ 431 int segment_len = get_segment_len(hfp_connection, segment); 432 if ((offset + segment_len + 1) > mtu) break; 433 // append segment. As it appends a '\0', we provide a buffer one byte larger 434 store_segment(hfp_connection, segment, data+offset, segment_len + 1); 435 offset += segment_len; 436 segment++; 437 } 438 rfcomm_send_prepared(cid, offset); 439 #ifdef ENABLE_HFP_AT_MESSAGES 440 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_SENT, (char *) data); 441 #endif 442 return segment; 443 } 444 445 // returns next segment to store 446 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 447 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 448 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 449 hfp_ag_indicators_cmd_generator_get_segment_len, 450 hfp_ag_indicators_cmd_generator_store_segment); 451 } 452 453 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 454 char buffer[40]; 455 const int size = sizeof(buffer); 456 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 457 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 458 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 459 return send_str_over_rfcomm(cid, buffer); 460 } 461 462 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 463 char buffer[40]; 464 const int size = sizeof(buffer); 465 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 466 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 467 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 468 return send_str_over_rfcomm(cid, buffer); 469 } 470 471 472 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 473 return hfp_ag_send_ok(cid); 474 } 475 476 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 477 char buffer[40]; 478 const int size = sizeof(buffer); 479 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 480 offset += hfp_ag_generic_indicators_join(buffer + offset, size - offset - 10); 481 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 482 return send_str_over_rfcomm(cid, buffer); 483 } 484 485 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 486 char buffer[40]; 487 int offset = hfp_ag_generic_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 488 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 489 return send_str_over_rfcomm(cid, buffer); 490 } 491 492 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 493 char buffer[20]; 494 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d\r\n", 495 HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, 496 indicator->status); 497 buffer[sizeof(buffer) - 1] = 0; 498 return send_str_over_rfcomm(cid, buffer); 499 } 500 501 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 502 char buffer[41]; 503 if (strlen(op.name) == 0){ 504 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 505 } else { 506 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 507 offset += snprintf(buffer+offset, 16, "%s", op.name); 508 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 509 } 510 return send_str_over_rfcomm(cid, buffer); 511 } 512 513 static inline int hfp_ag_send_cmd_with_space_and_int(uint16_t cid, const char * cmd, uint8_t value){ 514 char buffer[30]; 515 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", cmd, value); 516 return send_str_over_rfcomm(cid, buffer); 517 } 518 519 520 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 521 char buffer[30]; 522 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 523 return send_str_over_rfcomm(cid, buffer); 524 } 525 526 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 527 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 528 } 529 530 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 531 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 532 } 533 534 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 535 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 536 } 537 538 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 539 return hfp_ag_send_cmd_with_space_and_int(cid, HFP_RESPONSE_AND_HOLD, state); 540 } 541 542 static int hfp_ag_send_enhanced_voice_recognition_state_cmd(hfp_connection_t * hfp_connection){ 543 char buffer[30]; 544 uint8_t evra_enabled = hfp_connection->enhanced_voice_recognition_enabled ? 1 : 0; 545 snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, evra_enabled, hfp_connection->ag_vra_state); 546 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 547 } 548 549 static int hfp_ag_send_voice_recognition_cmd(hfp_connection_t * hfp_connection, uint8_t activate_voice_recognition){ 550 char buffer[30]; 551 if (hfp_connection->enhanced_voice_recognition_enabled){ 552 snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition, hfp_connection->ag_vra_state); 553 } else { 554 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 555 } 556 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 557 } 558 559 static int hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection_t * hfp_connection){ 560 char buffer[HFP_VR_TEXT_HEADER_SIZE + HFP_MAX_VR_TEXT_SIZE]; 561 snprintf(buffer, sizeof(buffer), "\r\n%s: 1,%d,%X,%d,%d,\"%s\"\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, 562 hfp_connection->ag_vra_state, 563 hfp_connection->ag_msg.text_id, 564 hfp_connection->ag_msg.text_type, 565 hfp_connection->ag_msg.text_operation, 566 hfp_connection->ag_msg.text); 567 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 568 } 569 570 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 571 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 572 573 #ifdef ENABLE_HFP_SUPER_WIDE_BAND_SPEECH 574 if (hfp_supports_codec(HFP_CODEC_LC3_SWB, hfp_ag_codecs_nr, hfp_ag_codecs)){ 575 if (hfp_supports_codec(HFP_CODEC_LC3_SWB, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 576 return HFP_CODEC_LC3_SWB; 577 } 578 } 579 #endif 580 581 #ifdef ENABLE_HFP_WIDE_BAND_SPEECH 582 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_ag_codecs_nr, hfp_ag_codecs)){ 583 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 584 return HFP_CODEC_MSBC; 585 } 586 } 587 #endif 588 589 return HFP_CODEC_CVSD; 590 } 591 592 /* state machines */ 593 594 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 595 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_ag_supported_features & (1 << HFP_AGSF_ESCO_S4)); 596 } 597 598 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 599 /* events ( == commands): 600 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 601 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 602 hf_trigger_codec_connection_setup == received BCC 603 ag_trigger_codec_connection_setup == received from AG to send BCS 604 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 605 */ 606 switch (hfp_connection->codecs_state){ 607 case HFP_CODECS_EXCHANGED: 608 if (hfp_connection->command == HFP_CMD_AVAILABLE_CODECS){ 609 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 610 return 1; 611 } 612 break; 613 614 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 615 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 616 hfp_connection->ag_send_common_codec = true; 617 break; 618 default: 619 break; 620 } 621 622 if (hfp_connection->ag_send_common_codec){ 623 hfp_connection->ag_send_common_codec = false; 624 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 625 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 626 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 627 return 1; 628 } 629 630 switch (hfp_connection->command){ 631 case HFP_CMD_AVAILABLE_CODECS: 632 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 633 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 634 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 635 return 1; 636 } 637 638 switch (hfp_connection->codecs_state){ 639 case HFP_CODECS_AG_SENT_COMMON_CODEC: 640 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 641 break; 642 default: 643 break; 644 } 645 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 646 return 1; 647 648 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 649 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 650 hfp_connection->establish_audio_connection = 1; 651 hfp_connection->sco_for_msbc_failed = 0; 652 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 653 return 1; 654 655 case HFP_CMD_HF_CONFIRMED_CODEC: 656 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 657 hfp_connection->codecs_state = HFP_CODECS_ERROR; 658 hfp_ag_send_error(hfp_connection->rfcomm_cid); 659 return 1; 660 } 661 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 662 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 663 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 664 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 665 // now, pick link settings 666 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 667 // configure SBC coded if needed 668 hfp_prepare_for_sco(hfp_connection); 669 return 1; 670 default: 671 break; 672 } 673 return 0; 674 } 675 676 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 677 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 678 hfp_emit_slc_connection_event(hfp_connection->local_role, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 679 680 // in-band ring tone is active if supported 681 hfp_connection->ag_in_band_ring_tone_active = has_in_band_ring_tone(); 682 683 // HFP 4.35: "When [...] a new Service Level Connection is established all indicators are activated by default." 684 uint16_t i; 685 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 686 hfp_connection->ag_indicators[i].enabled = 1; 687 } 688 689 // if active call exist, set per-hfp_connection state active, too (when audio is on) 690 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 691 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 692 } 693 // if AG is ringing, also start ringing on the HF 694 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 695 switch (hfp_gsm_callsetup_status()){ 696 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 697 hfp_ag_hf_start_ringing_incoming(hfp_connection); 698 break; 699 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 700 hfp_ag_hf_start_ringing_outgoing(hfp_connection); 701 break; 702 default: 703 break; 704 } 705 } 706 } 707 708 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 709 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 710 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 711 int sent = 0; 712 switch(hfp_connection->command){ 713 case HFP_CMD_SUPPORTED_FEATURES: 714 switch(hfp_connection->state){ 715 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 716 case HFP_EXCHANGE_SUPPORTED_FEATURES: 717 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_ag_codecs, &hfp_ag_codecs_nr); 718 if (has_codec_negotiation_feature(hfp_connection)){ 719 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 720 } else { 721 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 722 } 723 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 724 return 1; 725 default: 726 break; 727 } 728 break; 729 case HFP_CMD_AVAILABLE_CODECS: 730 sent = codecs_exchange_state_machine(hfp_connection); 731 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 732 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 733 } 734 return sent; 735 736 case HFP_CMD_RETRIEVE_AG_INDICATORS: 737 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 738 // HF requested AG Indicators and we did expect it 739 hfp_connection->send_ag_indicators_segment = 0; 740 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 741 // continue below in state switch 742 } 743 break; 744 745 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 746 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 747 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 748 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 749 return 1; 750 751 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 752 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 753 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 754 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 755 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 756 } else if (has_hf_indicators_feature(hfp_connection)){ 757 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 758 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 759 } else { 760 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 761 hfp_ag_slc_established(hfp_connection); 762 } 763 return 1; 764 765 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 766 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 767 if (has_hf_indicators_feature(hfp_connection)){ 768 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 769 } 770 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 771 if (!has_hf_indicators_feature(hfp_connection)){ 772 hfp_ag_slc_established(hfp_connection); 773 } 774 return 1; 775 776 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 777 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 778 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 779 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 780 return 1; 781 782 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 783 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 784 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 785 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 786 return 1; 787 788 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 789 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 790 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 791 hfp_ag_slc_established(hfp_connection); 792 return 1; 793 default: 794 break; 795 } 796 797 switch (hfp_connection->state){ 798 case HFP_RETRIEVE_INDICATORS: { 799 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 800 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 801 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 802 if (next_segment < num_segments){ 803 // prepare sending of next segment 804 hfp_connection->send_ag_indicators_segment = next_segment; 805 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 806 } else { 807 // done, go to next state 808 hfp_connection->send_ag_indicators_segment = 0; 809 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 810 } 811 return 1; 812 } 813 default: 814 break; 815 } 816 return 0; 817 } 818 819 static bool hfp_ag_vra_flag_supported(hfp_connection_t * hfp_connection){ 820 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION); 821 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION); 822 return hf && ag; 823 } 824 825 static bool hfp_ag_enhanced_vra_flag_supported(hfp_connection_t * hfp_connection){ 826 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS); 827 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS); 828 return hf && ag; 829 } 830 831 static bool hfp_ag_can_send_enhanced_vra_message_flag_supported(hfp_connection_t * hfp_connection){ 832 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_VOICE_RECOGNITION_TEXT); 833 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_TEXT); 834 return hf && ag; 835 } 836 837 static bool hfp_ag_can_activate_voice_recognition(hfp_connection_t * hfp_connection){ 838 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 839 return false; 840 } 841 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_OFF){ 842 return false; 843 } 844 if (hfp_connection->ag_vra_send_command){ 845 return false; 846 } 847 return true; 848 } 849 850 static bool hfp_ag_voice_recognition_session_active(hfp_connection_t * hfp_connection){ 851 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 852 return false; 853 } 854 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 855 if (hfp_connection->vra_state == HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO){ 856 return true; 857 } 858 return false; 859 } 860 return true; 861 } 862 863 static bool hfp_ag_is_audio_connection_active(hfp_connection_t * hfp_connection){ 864 switch (hfp_connection->state){ 865 case HFP_W2_CONNECT_SCO: 866 case HFP_W4_SCO_CONNECTED: 867 case HFP_AUDIO_CONNECTION_ESTABLISHED: 868 return true; 869 default: 870 return false; 871 } 872 } 873 874 static void hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection_t * hfp_connection, uint8_t status){ 875 hci_con_handle_t acl_handle = (hfp_connection != NULL) ? hfp_connection->acl_handle : HCI_CON_HANDLE_INVALID; 876 877 uint8_t event[6]; 878 event[0] = HCI_EVENT_HFP_META; 879 event[1] = sizeof(event) - 2; 880 event[2] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE_SENT; 881 little_endian_store_16(event, 3, acl_handle); 882 event[5] = status; 883 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 884 } 885 886 887 static void hfp_ag_emit_hf_indicator_value(hfp_connection_t * hfp_connection, uint16_t uuid, uint8_t value){ 888 hci_con_handle_t acl_handle = (hfp_connection != NULL) ? hfp_connection->acl_handle : HCI_CON_HANDLE_INVALID; 889 890 uint8_t event[8]; 891 event[0] = HCI_EVENT_HFP_META; 892 event[1] = sizeof(event) - 2; 893 event[2] = HFP_SUBEVENT_HF_INDICATOR; 894 little_endian_store_16(event, 3, acl_handle); 895 little_endian_store_16(event, 5, uuid); 896 event[7] = value; 897 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 898 } 899 900 static void hfp_ag_emit_general_simple_event(uint8_t event_subtype){ 901 if (!hfp_ag_callback) return; 902 903 uint8_t event[5]; 904 event[0] = HCI_EVENT_HFP_META; 905 event[1] = sizeof(event) - 2; 906 event[2] = event_subtype; 907 little_endian_store_16(event, 3, HCI_CON_HANDLE_INVALID); 908 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 909 } 910 911 static void hfp_ag_emit_apple_accessory_information(hfp_connection_t *hfp_connection){ 912 uint8_t event[40]; 913 uint16_t version_len = strlen(hfp_connection->apple_accessory_version); 914 event[0] = HCI_EVENT_HFP_META; 915 event[1] = 9 + version_len; 916 event[2] = HFP_SUBEVENT_APPLE_ACCESSORY_INFORMATION; 917 little_endian_store_16(event, 3, hfp_connection->acl_handle); 918 little_endian_store_16(event, 5, hfp_connection->apple_accessory_vendor_id); 919 little_endian_store_16(event, 7, hfp_connection->apple_accessory_product_id); 920 event[9] = hfp_connection->apple_accessory_features; 921 event[10] = version_len; 922 memcpy(&event[11], hfp_connection->apple_accessory_version, version_len); 923 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, 11 + version_len); 924 } 925 926 static void hfp_ag_emit_apple_accessory_state(hfp_connection_t *hfp_connection){ 927 uint8_t event[40]; 928 event[0] = HCI_EVENT_HFP_META; 929 event[1] = 2; 930 if (hfp_connection->apple_accessory_battery_level >= 0){ 931 event[2] = HFP_SUBEVENT_APPLE_BATTERY_LEVEL; 932 event[3] = hfp_connection->apple_accessory_battery_level; 933 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, 4); 934 } 935 if (hfp_connection->apple_accessory_docked >= 0){ 936 event[2] = HFP_SUBEVENT_APPLE_DOCKED_STATE; 937 event[3] = hfp_connection->apple_accessory_docked; 938 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, 4); 939 } 940 } 941 942 static void hfp_ag_emit_custom_command_event(hfp_connection_t * hfp_connection){ 943 btstack_assert(sizeof(hfp_connection->line_buffer) < (255-5)); 944 945 uint16_t line_len = (uint16_t) strlen((const char*)hfp_connection->line_buffer) + 1; 946 uint8_t event[7 + sizeof(hfp_connection->line_buffer)]; 947 event[0] = HCI_EVENT_HFP_META; 948 event[1] = 5 + line_len; 949 event[2] = HFP_SUBEVENT_CUSTOM_AT_COMMAND; 950 little_endian_store_16(event, 3, hfp_connection->acl_handle); 951 little_endian_store_16(event, 5, hfp_connection->custom_at_command_id); 952 memcpy(&event[7], hfp_connection->line_buffer, line_len); 953 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, 7 + line_len); 954 } 955 956 // @return status 957 static uint8_t hfp_ag_vra_state_machine_two(hfp_connection_t * hfp_connection){ 958 uint8_t status = ERROR_CODE_SUCCESS; 959 switch (hfp_connection->vra_state_requested){ 960 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 961 if (!hfp_ag_is_audio_connection_active(hfp_connection)){ 962 status = hfp_ag_setup_audio_connection(hfp_connection); 963 if (status != ERROR_CODE_SUCCESS){ 964 hfp_connection->vra_state_requested = hfp_connection->vra_state; 965 hfp_emit_voice_recognition_enabled(hfp_connection, status); 966 break; 967 } 968 } 969 hfp_connection->enhanced_voice_recognition_enabled = true; 970 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 971 hfp_connection->vra_state_requested = hfp_connection->vra_state; 972 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 973 break; 974 975 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 976 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 977 hfp_connection->vra_state_requested = hfp_connection->vra_state; 978 979 // release audio connection only if it was opened after audio VR activated 980 if (hfp_ag_is_audio_connection_active(hfp_connection) && !hfp_connection->ag_audio_connection_opened_before_vra){ 981 hfp_trigger_release_audio_connection(hfp_connection); 982 } 983 984 hfp_emit_voice_recognition_disabled(hfp_connection, ERROR_CODE_SUCCESS); 985 break; 986 987 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 988 // open only if audio connection does not already exist 989 if (!hfp_ag_is_audio_connection_active(hfp_connection)){ 990 status = hfp_ag_setup_audio_connection(hfp_connection); 991 if (status != ERROR_CODE_SUCCESS){ 992 hfp_connection->vra_state_requested = hfp_connection->vra_state; 993 hfp_emit_voice_recognition_enabled(hfp_connection, status); 994 break; 995 } 996 } 997 998 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 999 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1000 hfp_connection->enhanced_voice_recognition_enabled = hfp_ag_enhanced_vra_flag_supported(hfp_connection); 1001 1002 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1003 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 1004 } else { 1005 hfp_connection->emit_vra_enabled_after_audio_established = true; 1006 } 1007 break; 1008 1009 default: 1010 break; 1011 } 1012 return status; 1013 } 1014 1015 static uint8_t hfp_ag_vra_send_command(hfp_connection_t * hfp_connection){ 1016 uint8_t done = 0; 1017 uint8_t status; 1018 1019 switch (hfp_connection->vra_state_requested){ 1020 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_MSG: 1021 done = hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection); 1022 if (done == 0){ 1023 hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1024 } else { 1025 hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection, ERROR_CODE_SUCCESS); 1026 } 1027 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1028 return done; 1029 1030 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_STATUS: 1031 done = hfp_ag_send_enhanced_voice_recognition_state_cmd(hfp_connection); 1032 if (done == 0){ 1033 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1034 } else { 1035 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 1036 } 1037 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1038 return done; 1039 1040 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 1041 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1042 done = hfp_ag_send_voice_recognition_cmd(hfp_connection, hfp_connection->ag_activate_voice_recognition_value); 1043 if (done == 0){ 1044 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1045 1046 if (hfp_connection->ag_activate_voice_recognition_value == 1){ 1047 hfp_emit_voice_recognition_enabled(hfp_connection, done); 1048 } else { 1049 hfp_emit_voice_recognition_disabled(hfp_connection, done); 1050 } 1051 return 0; 1052 } 1053 status = hfp_ag_vra_state_machine_two(hfp_connection); 1054 return (status == ERROR_CODE_SUCCESS) ? 1 : 0; 1055 1056 default: 1057 log_error("state %u", hfp_connection->vra_state_requested); 1058 btstack_assert(false); 1059 return 0; 1060 } 1061 } 1062 1063 static int hfp_ag_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 1064 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 1065 return 0; 1066 } 1067 int done = 0; 1068 uint8_t status; 1069 1070 // VRA action initiated by AG 1071 if (hfp_connection->ag_vra_send_command){ 1072 hfp_connection->ag_vra_send_command = false; 1073 return hfp_ag_vra_send_command(hfp_connection); 1074 } 1075 1076 if (hfp_connection->ag_vra_requested_by_hf){ 1077 hfp_connection->ag_vra_requested_by_hf = false; 1078 1079 // HF initiatied voice recognition, parser extracted activation value 1080 switch (hfp_connection->ag_activate_voice_recognition_value){ 1081 case 0: 1082 if (hfp_ag_voice_recognition_session_active(hfp_connection)){ 1083 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 1084 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1085 } 1086 break; 1087 1088 case 1: 1089 if (hfp_ag_can_activate_voice_recognition(hfp_connection)){ 1090 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 1091 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1092 } 1093 break; 1094 1095 case 2: 1096 if (hfp_ag_voice_recognition_session_active(hfp_connection)){ 1097 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 1098 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1099 } 1100 break; 1101 default: 1102 break; 1103 } 1104 if (done == 0){ 1105 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1106 done = hfp_ag_send_error(hfp_connection->rfcomm_cid); 1107 return 1; 1108 } 1109 1110 status = hfp_ag_vra_state_machine_two(hfp_connection); 1111 return (status == ERROR_CODE_SUCCESS) ? 1 : 0; 1112 } 1113 1114 return 0; 1115 } 1116 1117 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 1118 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 1119 return 0; 1120 } 1121 1122 int sent = codecs_exchange_state_machine(hfp_connection); 1123 if (sent) return 1; 1124 1125 if (has_in_band_ring_tone()){ 1126 if (hfp_connection->ag_in_band_ring_tone_active != hfp_ag_in_band_ring_tone_active) { 1127 hfp_connection->ag_in_band_ring_tone_active = hfp_ag_in_band_ring_tone_active; 1128 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection); 1129 return 1; 1130 } 1131 } 1132 1133 switch(hfp_connection->command){ 1134 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 1135 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 1136 return 1; 1137 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 1138 if (hfp_connection->network_operator.format != 0){ 1139 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1140 } else { 1141 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1142 } 1143 return 1; 1144 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 1145 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1146 return 1; 1147 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 1148 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1149 return 1; 1150 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 1151 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1152 return 1; 1153 default: 1154 break; 1155 } 1156 return 0; 1157 } 1158 1159 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 1160 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 1161 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 1162 1163 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1164 1165 if (hfp_connection->release_audio_connection){ 1166 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 1167 hfp_connection->release_audio_connection = 0; 1168 gap_disconnect(hfp_connection->sco_handle); 1169 return 1; 1170 } 1171 1172 // accept incoming audio connection (codec negotiation is not used) 1173 if (hfp_connection->accept_sco && (hfp_sco_setup_active() == false)){ 1174 // notify about codec selection if not done already 1175 if (hfp_connection->negotiated_codec == 0){ 1176 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 1177 } 1178 // 1179 bool incoming_eSCO = hfp_connection->accept_sco == 2; 1180 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1181 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 1182 return 1; 1183 } 1184 1185 // run codecs exchange 1186 int sent = codecs_exchange_state_machine(hfp_connection); 1187 if (sent) return 1; 1188 1189 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 1190 if (hfp_sco_setup_active()) return 0; 1191 if (hci_can_send_command_packet_now() == false) return 0; 1192 if (hfp_connection->establish_audio_connection){ 1193 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1194 hfp_connection->establish_audio_connection = 0; 1195 hfp_setup_synchronous_connection(hfp_connection); 1196 return 1; 1197 } 1198 return 0; 1199 } 1200 1201 static void hfp_ag_set_callsetup_indicator(void){ 1202 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1203 if (!indicator){ 1204 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1205 return; 1206 }; 1207 indicator->status = hfp_gsm_callsetup_status(); 1208 } 1209 1210 static void hfp_ag_set_callheld_indicator(void){ 1211 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1212 if (!indicator){ 1213 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1214 return; 1215 }; 1216 indicator->status = hfp_gsm_callheld_status(); 1217 } 1218 1219 // 1220 // transition implementations for hfp_ag_call_state_machine 1221 // 1222 1223 static void hfp_ag_hf_start_ringing_incoming(hfp_connection_t * hfp_connection){ 1224 if (use_in_band_tone(hfp_connection)){ 1225 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 1226 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1227 } else { 1228 hfp_connection->call_state = HFP_CALL_INCOMING_RINGING; 1229 } 1230 } 1231 1232 static void hfp_ag_hf_start_ringing_outgoing(hfp_connection_t * hfp_connection){ 1233 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1234 } 1235 1236 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 1237 hfp_connection->ag_ring = 0; 1238 hfp_connection->ag_send_clip = 0; 1239 } 1240 1241 1242 static void hfp_ag_trigger_incoming_call_during_active_one(void){ 1243 btstack_linked_list_iterator_t it; 1244 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1245 while (btstack_linked_list_iterator_has_next(&it)){ 1246 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1247 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1248 if (hfp_connection->call_state != HFP_CALL_ACTIVE) continue; 1249 1250 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 1251 hfp_ag_run_for_context(hfp_connection); 1252 } 1253 } 1254 1255 static void hfp_ag_trigger_ring_and_clip(void) { 1256 btstack_linked_list_iterator_t it; 1257 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1258 while (btstack_linked_list_iterator_has_next(&it)){ 1259 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1260 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1261 switch (hfp_connection->call_state){ 1262 case HFP_CALL_INCOMING_RINGING: 1263 case HFP_CALL_OUTGOING_RINGING: 1264 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1265 // Queue RING on this connection 1266 hfp_connection->ag_ring = 1; 1267 1268 // HFP v1.8, 4.23 Calling Line Identification (CLI) Notification 1269 // "If the calling subscriber number information is available from the network, the AG shall issue the 1270 // +CLIP unsolicited result code just after every RING indication when the HF is alerted in an incoming call." 1271 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1272 1273 // trigger next message 1274 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1275 break; 1276 default: 1277 break; 1278 } 1279 } 1280 } 1281 1282 // trigger RING and CLIP messages on connections that are ringing 1283 static void hfp_ag_ring_timeout_handler(btstack_timer_source_t * timer){ 1284 hfp_ag_trigger_ring_and_clip(); 1285 1286 btstack_run_loop_set_timer(timer, HFP_RING_PERIOD_MS); // 2 seconds timeout 1287 btstack_run_loop_add_timer(timer); 1288 } 1289 1290 static void hfp_ag_ring_timeout_stop(void){ 1291 btstack_run_loop_remove_timer(&hfp_ag_ring_timeout); 1292 } 1293 1294 static void hfp_ag_start_ringing(void){ 1295 // setup ring timer 1296 btstack_run_loop_remove_timer(&hfp_ag_ring_timeout); 1297 btstack_run_loop_set_timer_handler(&hfp_ag_ring_timeout, hfp_ag_ring_timeout_handler); 1298 btstack_run_loop_set_timer(&hfp_ag_ring_timeout, HFP_RING_PERIOD_MS); // 2 seconds timeout 1299 btstack_run_loop_add_timer(&hfp_ag_ring_timeout); 1300 1301 // emit start ringing 1302 hfp_ag_emit_general_simple_event(HFP_SUBEVENT_START_RINGING); 1303 1304 // send initial RING + CLIP 1305 hfp_ag_trigger_ring_and_clip(); 1306 } 1307 1308 static void hfp_ag_stop_ringing(void){ 1309 hfp_ag_ring_timeout_stop(); 1310 hfp_ag_emit_general_simple_event(HFP_SUBEVENT_STOP_RINGING); 1311 1312 btstack_linked_list_iterator_t it; 1313 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1314 while (btstack_linked_list_iterator_has_next(&it)){ 1315 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1316 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1317 if ((hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) && 1318 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1319 hfp_ag_hf_stop_ringing(hfp_connection); 1320 } 1321 } 1322 1323 static void hfp_ag_trigger_incoming_call_idle(void){ 1324 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 1325 if (indicator_index < 0) return; 1326 1327 // update callsetup state in connections 1328 btstack_linked_list_iterator_t it; 1329 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1330 while (btstack_linked_list_iterator_has_next(&it)){ 1331 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1332 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1333 if (hfp_connection->call_state != HFP_CALL_IDLE) continue; 1334 1335 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1336 1337 hfp_ag_hf_start_ringing_incoming(hfp_connection); 1338 1339 hfp_ag_run_for_context(hfp_connection); 1340 } 1341 1342 // start local ringing - started after connection state has been updated 1343 hfp_ag_start_ringing(); 1344 } 1345 1346 static void hfp_ag_trigger_outgoing_call(void){ 1347 btstack_linked_list_iterator_t it; 1348 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1349 while (btstack_linked_list_iterator_has_next(&it)){ 1350 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1351 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1352 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1353 if (hfp_connection->call_state == HFP_CALL_IDLE){ 1354 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1355 } 1356 } 1357 } 1358 1359 static void hfp_ag_handle_outgoing_call_accepted(hfp_connection_t * hfp_connection){ 1360 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1361 1362 // trigger callsetup to be 1363 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1364 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1365 1366 int indicator_index ; 1367 1368 hfp_ag_set_callsetup_indicator(); 1369 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1370 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1371 1372 // put current call on hold if active 1373 if (put_call_on_hold){ 1374 log_info("AG putting current call on hold for new outgoing call"); 1375 hfp_ag_set_callheld_indicator(); 1376 indicator_index = get_ag_indicator_index_for_name("callheld"); 1377 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1378 } 1379 1380 // start audio if needed 1381 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1382 } 1383 1384 static void hfp_ag_transfer_indicator(const char * name){ 1385 int indicator_index = get_ag_indicator_index_for_name(name); 1386 if (indicator_index < 0) return; 1387 1388 btstack_linked_list_iterator_t it; 1389 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1390 while (btstack_linked_list_iterator_has_next(&it)){ 1391 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1392 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1393 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1394 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1395 hfp_ag_run_for_context(hfp_connection); 1396 } 1397 } 1398 1399 static void hfp_ag_transfer_callsetup_state(void){ 1400 hfp_ag_transfer_indicator("callsetup"); 1401 } 1402 1403 static void hfp_ag_transfer_call_state(void){ 1404 hfp_ag_transfer_indicator("call"); 1405 } 1406 1407 static void hfp_ag_transfer_callheld_state(void){ 1408 hfp_ag_transfer_indicator("callheld"); 1409 } 1410 1411 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 1412 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1413 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1414 1415 hfp_ag_stop_ringing(); 1416 1417 btstack_linked_list_iterator_t it; 1418 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1419 while (btstack_linked_list_iterator_has_next(&it)){ 1420 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1421 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1422 if ((hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) && 1423 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1424 1425 if (hfp_connection == source){ 1426 1427 if (use_in_band_tone(hfp_connection)){ 1428 hfp_connection->call_state = HFP_CALL_ACTIVE; 1429 } else { 1430 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 1431 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1432 } 1433 1434 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1435 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1436 1437 } else { 1438 hfp_connection->call_state = HFP_CALL_IDLE; 1439 } 1440 hfp_ag_run_for_context(hfp_connection); 1441 } 1442 } 1443 1444 static void hfp_ag_ag_accept_call(void){ 1445 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1446 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1447 1448 hfp_ag_stop_ringing(); 1449 1450 btstack_linked_list_iterator_t it; 1451 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1452 while (btstack_linked_list_iterator_has_next(&it)){ 1453 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1454 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1455 if ((hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) && 1456 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1457 1458 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1459 1460 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1461 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1462 1463 hfp_ag_run_for_context(hfp_connection); 1464 break; // only single 1465 } 1466 } 1467 1468 static void hfp_ag_trigger_reject_call(void){ 1469 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1470 1471 hfp_ag_stop_ringing(); 1472 1473 btstack_linked_list_iterator_t it; 1474 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1475 while (btstack_linked_list_iterator_has_next(&it)){ 1476 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1477 if (connection->local_role != HFP_ROLE_AG) continue; 1478 1479 switch (connection->call_state){ 1480 case HFP_CALL_INCOMING_RINGING: 1481 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1482 case HFP_CALL_OUTGOING_RINGING: 1483 case HFP_CALL_OUTGOING_INITIATED: 1484 case HFP_CALL_OUTGOING_DIALING: 1485 break; 1486 default: 1487 continue; 1488 } 1489 1490 connection->call_state = HFP_CALL_IDLE; 1491 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1492 1493 if (connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1494 connection->release_audio_connection = 1; 1495 } 1496 hfp_emit_simple_event(connection, HFP_SUBEVENT_CALL_TERMINATED); 1497 hfp_ag_run_for_context(connection); 1498 rfcomm_request_can_send_now_event(connection->rfcomm_cid); 1499 } 1500 } 1501 1502 static void hfp_ag_trigger_terminate_call(void){ 1503 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1504 1505 // no ringing during call 1506 1507 btstack_linked_list_iterator_t it; 1508 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1509 while (btstack_linked_list_iterator_has_next(&it)){ 1510 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1511 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1512 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1513 1514 hfp_connection->call_state = HFP_CALL_IDLE; 1515 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1516 1517 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1518 hfp_connection->release_audio_connection = 1; 1519 } 1520 1521 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1522 hfp_ag_run_for_context(hfp_connection); 1523 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1524 } 1525 } 1526 1527 static void hfp_ag_set_call_indicator(void){ 1528 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1529 if (!indicator){ 1530 log_error("hfp_ag_set_call_state: call indicator is missing"); 1531 return; 1532 }; 1533 indicator->status = hfp_gsm_call_status(); 1534 } 1535 1536 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1537 btstack_linked_list_iterator_t it; 1538 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1539 while (btstack_linked_list_iterator_has_next(&it)){ 1540 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1541 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1542 if (hfp_connection->call_state == call_state) return hfp_connection; 1543 } 1544 return NULL; 1545 } 1546 1547 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1548 btstack_linked_list_iterator_t it; 1549 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1550 while (btstack_linked_list_iterator_has_next(&it)){ 1551 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1552 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1553 hfp_connection->send_response_and_hold_status = state + 1; 1554 } 1555 } 1556 1557 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1558 int indicator_index; 1559 switch (hfp_connection->call_state){ 1560 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1561 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1562 // we got event: audio hfp_connection established 1563 hfp_connection->call_state = HFP_CALL_INCOMING_RINGING; 1564 break; 1565 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1566 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1567 // we got event: audio hfp_connection established 1568 hfp_connection->call_state = HFP_CALL_ACTIVE; 1569 break; 1570 case HFP_CALL_W2_SEND_CALL_WAITING: 1571 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1572 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1573 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1574 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1575 break; 1576 default: 1577 break; 1578 } 1579 return 0; 1580 } 1581 1582 // queue 'error' to HF 1583 static void hfp_ag_queue_error(hfp_connection_t * hfp_connection){ 1584 hfp_connection->send_error++; 1585 } 1586 1587 // queue 'ok' to HF 1588 static void hfp_ag_queue_ok(hfp_connection_t * hfp_connection){ 1589 hfp_connection->ok_pending++; 1590 } 1591 1592 // functions extracted from hfp_ag_call_sm below 1593 static void hfp_ag_handle_reject_outgoing_call(void){ 1594 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1595 if (!hfp_connection){ 1596 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1597 return; 1598 } 1599 1600 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1601 hfp_connection->call_state = HFP_CALL_IDLE; 1602 hfp_ag_queue_error(hfp_connection); 1603 hfp_ag_run_for_context(hfp_connection); 1604 } 1605 1606 // hfp_connection is used to identify originating HF 1607 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1608 1609 // allow to intercept call statemachine events 1610 if (hfp_ag_custom_call_sm_handler != NULL){ 1611 bool handle_event = (*hfp_ag_custom_call_sm_handler)(event); 1612 if (!handle_event) return; 1613 } 1614 1615 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1616 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1617 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1618 1619 switch (event){ 1620 case HFP_AG_INCOMING_CALL: 1621 switch (hfp_gsm_call_status()){ 1622 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1623 switch (hfp_gsm_callsetup_status()){ 1624 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1625 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1626 hfp_ag_set_callsetup_indicator(); 1627 hfp_ag_trigger_incoming_call_idle(); 1628 log_info("AG rings"); 1629 break; 1630 default: 1631 break; 1632 } 1633 break; 1634 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1635 switch (hfp_gsm_callsetup_status()){ 1636 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1637 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1638 hfp_ag_set_callsetup_indicator(); 1639 hfp_ag_trigger_incoming_call_during_active_one(); 1640 log_info("AG call waiting"); 1641 break; 1642 default: 1643 break; 1644 } 1645 break; 1646 default: 1647 break; 1648 } 1649 break; 1650 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1651 switch (hfp_gsm_call_status()){ 1652 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1653 switch (hfp_gsm_callsetup_status()){ 1654 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1655 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1656 hfp_ag_set_call_indicator(); 1657 hfp_ag_set_callsetup_indicator(); 1658 hfp_ag_ag_accept_call(); 1659 log_info("AG answers call, accept call by GSM"); 1660 break; 1661 default: 1662 break; 1663 } 1664 break; 1665 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1666 switch (hfp_gsm_callsetup_status()){ 1667 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1668 log_info("AG: current call is placed on hold, incoming call gets active"); 1669 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1670 hfp_ag_set_callsetup_indicator(); 1671 hfp_ag_set_callheld_indicator(); 1672 hfp_ag_transfer_callsetup_state(); 1673 hfp_ag_transfer_callheld_state(); 1674 break; 1675 default: 1676 break; 1677 } 1678 break; 1679 default: 1680 break; 1681 } 1682 break; 1683 1684 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1685 switch (hfp_gsm_call_status()){ 1686 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1687 switch (hfp_gsm_callheld_status()){ 1688 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1689 log_info("AG: joining held call with active call"); 1690 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1691 hfp_ag_set_callheld_indicator(); 1692 hfp_ag_transfer_callheld_state(); 1693 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1694 break; 1695 default: 1696 break; 1697 } 1698 break; 1699 default: 1700 break; 1701 } 1702 break; 1703 1704 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1705 switch (hfp_gsm_call_status()){ 1706 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1707 switch (hfp_gsm_callsetup_status()){ 1708 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1709 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1710 hfp_ag_set_callsetup_indicator(); 1711 hfp_ag_set_call_indicator(); 1712 hfp_ag_hf_accept_call(hfp_connection); 1713 hfp_ag_queue_ok(hfp_connection); 1714 log_info("HF answers call, accept call by GSM"); 1715 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1716 break; 1717 default: 1718 break; 1719 } 1720 break; 1721 default: 1722 break; 1723 } 1724 break; 1725 1726 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1727 switch (hfp_gsm_call_status()){ 1728 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1729 switch (hfp_gsm_callsetup_status()){ 1730 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1731 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1732 hfp_ag_response_and_hold_active = true; 1733 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1734 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1735 // as with regular call 1736 hfp_ag_set_call_indicator(); 1737 hfp_ag_set_callsetup_indicator(); 1738 hfp_ag_ag_accept_call(); 1739 log_info("AG response and hold - hold by AG"); 1740 break; 1741 default: 1742 break; 1743 } 1744 break; 1745 default: 1746 break; 1747 } 1748 break; 1749 1750 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1751 switch (hfp_gsm_call_status()){ 1752 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1753 switch (hfp_gsm_callsetup_status()){ 1754 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1755 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1756 hfp_ag_response_and_hold_active = true; 1757 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1758 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1759 // as with regular call 1760 hfp_ag_set_call_indicator(); 1761 hfp_ag_set_callsetup_indicator(); 1762 hfp_ag_hf_accept_call(hfp_connection); 1763 log_info("AG response and hold - hold by HF"); 1764 break; 1765 default: 1766 break; 1767 } 1768 break; 1769 default: 1770 break; 1771 } 1772 break; 1773 1774 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1775 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1776 if (!hfp_ag_response_and_hold_active) break; 1777 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1778 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1779 hfp_ag_response_and_hold_active = false; 1780 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1781 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1782 log_info("Held Call accepted and active"); 1783 break; 1784 1785 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1786 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1787 if (!hfp_ag_response_and_hold_active) break; 1788 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1789 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1790 hfp_ag_response_and_hold_active = false; 1791 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1792 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1793 // from terminate by ag 1794 hfp_ag_set_call_indicator(); 1795 hfp_ag_trigger_terminate_call(); 1796 break; 1797 1798 case HFP_AG_TERMINATE_CALL_BY_HF: 1799 switch (hfp_gsm_call_status()){ 1800 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1801 switch (hfp_gsm_callsetup_status()){ 1802 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1803 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1804 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1805 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1806 hfp_ag_set_callsetup_indicator(); 1807 hfp_ag_transfer_callsetup_state(); 1808 hfp_ag_trigger_reject_call(); 1809 log_info("HF Rejected Incoming call, AG terminate call"); 1810 break; 1811 default: 1812 break; 1813 } 1814 break; 1815 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1816 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1817 hfp_ag_set_callsetup_indicator(); 1818 hfp_ag_set_call_indicator(); 1819 hfp_ag_trigger_terminate_call(); 1820 log_info("AG terminate call"); 1821 break; 1822 default: 1823 break; 1824 } 1825 break; 1826 1827 case HFP_AG_TERMINATE_CALL_BY_AG: 1828 switch (hfp_gsm_call_status()){ 1829 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1830 switch (hfp_gsm_callsetup_status()){ 1831 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1832 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1833 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1834 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1835 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1836 hfp_ag_set_callsetup_indicator(); 1837 hfp_ag_trigger_reject_call(); 1838 log_info("AG Rejected Incoming call, AG terminate call"); 1839 break; 1840 default: 1841 break; 1842 } 1843 break; 1844 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1845 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1846 hfp_ag_set_callsetup_indicator(); 1847 hfp_ag_set_call_indicator(); 1848 hfp_ag_trigger_terminate_call(); 1849 log_info("AG terminate call"); 1850 break; 1851 default: 1852 break; 1853 } 1854 break; 1855 case HFP_AG_CALL_DROPPED: 1856 switch (hfp_gsm_call_status()){ 1857 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1858 switch (hfp_gsm_callsetup_status()){ 1859 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1860 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1861 hfp_ag_stop_ringing(); 1862 break; 1863 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1864 log_info("Outgoing call interrupted\n"); 1865 break; 1866 default: 1867 break; 1868 } 1869 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1870 hfp_ag_set_callsetup_indicator(); 1871 hfp_ag_transfer_callsetup_state(); 1872 hfp_ag_trigger_terminate_call(); 1873 break; 1874 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1875 if (hfp_ag_response_and_hold_active) { 1876 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1877 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1878 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1879 } 1880 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1881 hfp_ag_set_callsetup_indicator(); 1882 hfp_ag_set_call_indicator(); 1883 hfp_ag_trigger_terminate_call(); 1884 log_info("AG notify call dropped"); 1885 break; 1886 default: 1887 break; 1888 } 1889 break; 1890 1891 case HFP_AG_OUTGOING_CALL_INITIATED_BY_HF: 1892 // directly reject call if number of free slots is exceeded 1893 if (!hfp_gsm_call_possible()){ 1894 hfp_ag_queue_error(hfp_connection); 1895 hfp_ag_run_for_context(hfp_connection); 1896 break; 1897 } 1898 1899 // note: number not used currently 1900 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1901 1902 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1903 1904 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1905 break; 1906 1907 case HFP_AG_OUTGOING_CALL_INITIATED_BY_AG: 1908 // directly reject call if number of free slots is exceeded 1909 if (!hfp_gsm_call_possible()) { 1910 // TODO: no error for user 1911 break; 1912 } 1913 switch (hfp_gsm_call_status()) { 1914 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1915 switch (hfp_gsm_callsetup_status()) { 1916 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1917 // note: number not used currently 1918 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, 0, 0, "1234567"); 1919 // init call state for all connections 1920 hfp_ag_trigger_outgoing_call(); 1921 // get first one and accept call 1922 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1923 if (hfp_connection) { 1924 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1925 } 1926 break; 1927 default: 1928 // TODO: no error for user 1929 break; 1930 } 1931 break; 1932 default: 1933 // TODO: no error for user 1934 break; 1935 } 1936 break; 1937 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1938 // directly reject call if number of free slots is exceeded 1939 if (!hfp_gsm_call_possible()){ 1940 hfp_ag_queue_error(hfp_connection); 1941 hfp_ag_run_for_context(hfp_connection); 1942 break; 1943 } 1944 1945 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1946 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1947 1948 log_info("Redial last number"); 1949 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1950 1951 if (strlen(last_dialed_number) > 0){ 1952 log_info("Last number exists: accept call"); 1953 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1954 } else { 1955 log_info("log_infoLast number missing: reject call"); 1956 hfp_ag_handle_reject_outgoing_call(); 1957 } 1958 break; 1959 } 1960 case HFP_AG_OUTGOING_CALL_REJECTED: 1961 hfp_ag_handle_reject_outgoing_call(); 1962 break; 1963 1964 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1965 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1966 if (!hfp_connection){ 1967 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1968 break; 1969 } 1970 1971 hfp_ag_queue_ok(hfp_connection); 1972 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1973 break; 1974 } 1975 case HFP_AG_OUTGOING_CALL_RINGING: 1976 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1977 if (!hfp_connection){ 1978 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1979 break; 1980 } 1981 1982 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1983 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1984 hfp_ag_set_callsetup_indicator(); 1985 hfp_ag_transfer_callsetup_state(); 1986 hfp_ag_hf_start_ringing_outgoing(hfp_connection); 1987 break; 1988 1989 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1990 // get outgoing call 1991 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1992 if (!hfp_connection){ 1993 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1994 } 1995 if (!hfp_connection){ 1996 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1997 break; 1998 } 1999 2000 bool callheld_status_call_on_hold_and_no_active_calls = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 2001 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 2002 hfp_connection->call_state = HFP_CALL_ACTIVE; 2003 hfp_ag_set_callsetup_indicator(); 2004 hfp_ag_set_call_indicator(); 2005 hfp_ag_transfer_call_state(); 2006 hfp_ag_transfer_callsetup_state(); 2007 if (callheld_status_call_on_hold_and_no_active_calls){ 2008 hfp_ag_set_callheld_indicator(); 2009 hfp_ag_transfer_callheld_state(); 2010 } 2011 hfp_ag_hf_stop_ringing(hfp_connection); 2012 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 2013 break; 2014 } 2015 2016 case HFP_AG_CALL_HOLD_USER_BUSY: 2017 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 2018 hfp_ag_set_callsetup_indicator(); 2019 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 2020 hfp_connection->call_state = HFP_CALL_ACTIVE; 2021 log_info("AG: Call Waiting, User Busy"); 2022 break; 2023 2024 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 2025 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 2026 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 2027 2028 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2029 if (call_held || call_setup_in_progress){ 2030 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 2031 0, NULL); 2032 2033 } 2034 2035 if (call_setup_in_progress){ 2036 log_info("AG: Call Dropped, Accept new call"); 2037 hfp_ag_set_callsetup_indicator(); 2038 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 2039 } else { 2040 log_info("AG: Call Dropped, Resume held call"); 2041 } 2042 if (call_held){ 2043 hfp_ag_set_callheld_indicator(); 2044 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 2045 } 2046 2047 hfp_connection->call_state = HFP_CALL_ACTIVE; 2048 break; 2049 } 2050 2051 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 2052 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2053 // only update if callsetup changed 2054 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 2055 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 2056 NULL); 2057 2058 if (call_setup_in_progress){ 2059 log_info("AG: Call on Hold, Accept new call"); 2060 hfp_ag_set_callsetup_indicator(); 2061 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 2062 } else { 2063 log_info("AG: Swap calls"); 2064 } 2065 2066 hfp_ag_set_callheld_indicator(); 2067 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 2068 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 2069 hfp_connection->call_state = HFP_CALL_ACTIVE; 2070 break; 2071 } 2072 2073 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 2074 // Adds a held call to the conversation. 2075 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 2076 log_info("AG: Join 3-way-call"); 2077 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 2078 hfp_ag_set_callheld_indicator(); 2079 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 2080 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 2081 } 2082 hfp_connection->call_state = HFP_CALL_ACTIVE; 2083 break; 2084 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 2085 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 2086 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 2087 log_info("AG: Transfer call -> Connect two calls and disconnect"); 2088 hfp_ag_set_call_indicator(); 2089 hfp_ag_set_callheld_indicator(); 2090 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 2091 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 2092 hfp_connection->call_state = HFP_CALL_IDLE; 2093 break; 2094 2095 default: 2096 break; 2097 } 2098 2099 2100 } 2101 2102 2103 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 2104 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 2105 if (!active_call) return; 2106 2107 int idx = active_call->index; 2108 hfp_enhanced_call_dir_t dir = active_call->direction; 2109 hfp_enhanced_call_status_t status = active_call->enhanced_status; 2110 hfp_enhanced_call_mode_t mode = active_call->mode; 2111 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 2112 uint8_t type = active_call->clip_type; 2113 char * number = active_call->clip_number; 2114 2115 char buffer[100]; 2116 // TODO: check length of a buffer, to fit the MTU 2117 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 2118 if (number){ 2119 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 2120 } 2121 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 2122 log_info("hfp_ag_send_current_call_status 000 index %d, dir %d, status %d, mode %d, mpty %d, type %d, number %s", idx, dir, status, 2123 mode, mpty, type, number); 2124 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 2125 } 2126 2127 // sends pending command, returns if command was sent 2128 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 2129 if (hfp_connection->send_status_of_current_calls){ 2130 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 2131 hfp_connection->next_call_index++; 2132 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 2133 return 1; 2134 } else { 2135 // TODO: this code should be removed. check a) before setting send_status_of_current_calls, or b) right before hfp_ag_send_call_status above 2136 hfp_connection->next_call_index = 0; 2137 hfp_ag_queue_ok(hfp_connection); 2138 hfp_connection->send_status_of_current_calls = 0; 2139 } 2140 } 2141 2142 if (hfp_connection->ag_notify_incoming_call_waiting){ 2143 hfp_connection->ag_notify_incoming_call_waiting = 0; 2144 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 2145 return 1; 2146 } 2147 2148 // note: before ok_pending and send_error 2149 if (hfp_connection->send_apple_information){ 2150 hfp_connection->send_apple_information = false; 2151 hfp_ag_send_apple_information(hfp_connection->rfcomm_cid); 2152 return 1; 2153 } 2154 2155 if (hfp_connection->send_error > 0){ 2156 hfp_connection->send_error--; 2157 hfp_connection->command = HFP_CMD_NONE; 2158 hfp_ag_send_error(hfp_connection->rfcomm_cid); 2159 return 1; 2160 } 2161 2162 // note: before update AG indicators and ok_pending 2163 if (hfp_connection->send_response_and_hold_status){ 2164 int status = hfp_connection->send_response_and_hold_status - 1; 2165 hfp_connection->send_response_and_hold_status = 0; 2166 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 2167 return 1; 2168 } 2169 2170 // note: before ok_pending and send_error to allow for unsolicited result on custom command 2171 if (hfp_connection->send_custom_message != NULL){ 2172 const char * message = hfp_connection->send_custom_message; 2173 hfp_connection->send_custom_message = NULL; 2174 send_str_over_rfcomm(hfp_connection->rfcomm_cid, message); 2175 hfp_emit_event(hfp_connection, HFP_SUBEVENT_CUSTOM_AT_MESSAGE_SENT, ERROR_CODE_SUCCESS); 2176 return 1; 2177 } 2178 2179 if (hfp_connection->ok_pending > 0){ 2180 hfp_connection->ok_pending--; 2181 hfp_connection->command = HFP_CMD_NONE; 2182 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2183 return 1; 2184 } 2185 2186 // update AG indicators only if enabled by AT+CMER=3,0,0,1 2187 if ((hfp_connection->enable_status_update_for_ag_indicators == 1) && (hfp_connection->ag_indicators_status_update_bitmap != 0)){ 2188 uint16_t i; 2189 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 2190 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 2191 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 2192 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 2193 return 1; 2194 } 2195 } 2196 } 2197 2198 if (hfp_connection->ag_send_no_carrier){ 2199 hfp_connection->ag_send_no_carrier = false; 2200 hfp_ag_send_no_carrier(hfp_connection->rfcomm_cid); 2201 return 1; 2202 } 2203 2204 if (hfp_connection->send_phone_number_for_voice_tag){ 2205 hfp_connection->send_phone_number_for_voice_tag = 0; 2206 hfp_connection->command = HFP_CMD_NONE; 2207 hfp_ag_queue_ok(hfp_connection); 2208 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 2209 return 1; 2210 } 2211 2212 if (hfp_connection->send_subscriber_number){ 2213 if (hfp_connection->next_subscriber_number_to_send < hfp_ag_subscriber_numbers_count){ 2214 hfp_phone_number_t phone = hfp_ag_subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 2215 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 2216 } else { 2217 hfp_connection->send_subscriber_number = 0; 2218 hfp_connection->next_subscriber_number_to_send = 0; 2219 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2220 } 2221 hfp_connection->command = HFP_CMD_NONE; 2222 return 1; 2223 } 2224 2225 if (hfp_connection->send_microphone_gain){ 2226 hfp_connection->send_microphone_gain = 0; 2227 hfp_connection->command = HFP_CMD_NONE; 2228 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 2229 return 1; 2230 } 2231 2232 if (hfp_connection->send_speaker_gain){ 2233 hfp_connection->send_speaker_gain = 0; 2234 hfp_connection->command = HFP_CMD_NONE; 2235 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 2236 return 1; 2237 } 2238 2239 if (hfp_connection->send_ag_status_indicators){ 2240 hfp_connection->send_ag_status_indicators = 0; 2241 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 2242 return 1; 2243 } 2244 2245 if (hfp_connection->extended_audio_gateway_error){ 2246 uint8_t extended_audio_gateway_error = hfp_connection->extended_audio_gateway_error; 2247 hfp_connection->extended_audio_gateway_error = 0; 2248 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, extended_audio_gateway_error); 2249 2250 } 2251 return 0; 2252 } 2253 2254 // sends pending command, returns if command was sent 2255 static int hfp_ag_run_ring_and_clip(hfp_connection_t *hfp_connection){ 2256 // delay RING/CLIP until audio connection has been established for incoming calls 2257 // hfp_ag_hf_trigger_ring_and_clip is called in call_setup_state_machine 2258 if (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING){ 2259 if (hfp_connection->ag_ring){ 2260 hfp_connection->ag_ring = 0; 2261 hfp_connection->command = HFP_CMD_NONE; 2262 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 2263 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 2264 return 1; 2265 } 2266 2267 if (hfp_connection->ag_send_clip){ 2268 hfp_connection->ag_send_clip = 0; 2269 hfp_connection->command = HFP_CMD_NONE; 2270 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 2271 return 1; 2272 } 2273 } 2274 return 0; 2275 } 2276 2277 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 2278 2279 btstack_assert(hfp_connection != NULL); 2280 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 2281 2282 // during SDP query, RFCOMM CID is not set 2283 if (hfp_connection->rfcomm_cid == 0) return; 2284 2285 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->emit_vra_enabled_after_audio_established){ 2286 hfp_connection->emit_vra_enabled_after_audio_established = false; 2287 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 2288 } 2289 2290 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 2291 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 2292 hfp_connection->release_audio_connection = 0; 2293 gap_disconnect(hfp_connection->sco_handle); 2294 return; 2295 } 2296 2297 // configure NBS/WBS if needed using vendor-specific HCI commands 2298 if (hci_can_send_command_packet_now()) { 2299 #ifdef ENABLE_CC256X_ASSISTED_HFP 2300 // WBS Disassociate 2301 if (hfp_connection->cc256x_send_wbs_disassociate){ 2302 hfp_connection->cc256x_send_wbs_disassociate = false; 2303 hci_send_cmd(&hci_ti_wbs_disassociate); 2304 return; 2305 } 2306 // Write Codec Config 2307 if (hfp_connection->cc256x_send_write_codec_config){ 2308 hfp_connection->cc256x_send_write_codec_config = false; 2309 hfp_cc256x_write_codec_config(hfp_connection); 2310 return; 2311 } 2312 // WBS Associate 2313 if (hfp_connection->cc256x_send_wbs_associate){ 2314 hfp_connection->cc256x_send_wbs_associate = false; 2315 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 2316 return; 2317 } 2318 #endif 2319 #ifdef ENABLE_BCM_PCM_WBS 2320 // Enable WBS 2321 if (hfp_connection->bcm_send_enable_wbs){ 2322 hfp_connection->bcm_send_enable_wbs = false; 2323 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 2324 return; 2325 } 2326 // Write I2S/PCM params 2327 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 2328 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 2329 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 2330 return; 2331 } 2332 // Disable WBS 2333 if (hfp_connection->bcm_send_disable_wbs){ 2334 hfp_connection->bcm_send_disable_wbs = false; 2335 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 2336 return; 2337 } 2338 #endif 2339 #ifdef ENABLE_RTK_PCM_WBS 2340 // Configure CVSD vs. mSBC 2341 if (hfp_connection->rtk_send_sco_config){ 2342 hfp_connection->rtk_send_sco_config = false; 2343 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){ 2344 log_info("RTK SCO: 16k + mSBC"); 2345 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x00, 0x00, 0x41); 2346 } else { 2347 log_info("RTK SCO: 16k + CVSD"); 2348 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x0c, 0x00, 0x01); 2349 } 2350 return; 2351 } 2352 #endif 2353 #ifdef ENABLE_NXP_PCM_WBS 2354 if (hfp_connection->nxp_start_audio_handle != HCI_CON_HANDLE_INVALID){ 2355 hci_con_handle_t sco_handle = hfp_connection->nxp_start_audio_handle; 2356 hfp_connection->nxp_start_audio_handle = HCI_CON_HANDLE_INVALID; 2357 hci_send_cmd(&hci_nxp_host_pcm_i2s_audio_config, 0, 0, sco_handle, 0); 2358 return; 2359 } 2360 if (hfp_connection->nxp_stop_audio_handle != HCI_CON_HANDLE_INVALID){ 2361 hci_con_handle_t sco_handle = hfp_connection->nxp_stop_audio_handle; 2362 hfp_connection->nxp_stop_audio_handle = HCI_CON_HANDLE_INVALID; 2363 hci_send_cmd(&hci_nxp_host_pcm_i2s_audio_config, 1, 0, sco_handle, 0); 2364 return; 2365 } 2366 #endif 2367 } 2368 2369 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 2370 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 2371 hfp_finalize_connection_context(hfp_connection); 2372 return; 2373 } 2374 #endif 2375 2376 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 2377 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 2378 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2379 return; 2380 } 2381 2382 int cmd_sent = hfp_ag_send_commands(hfp_connection); 2383 2384 if (!cmd_sent){ 2385 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 2386 } 2387 2388 if (!cmd_sent){ 2389 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 2390 } 2391 2392 if (!cmd_sent){ 2393 cmd_sent = call_setup_state_machine(hfp_connection); 2394 } 2395 2396 if (!cmd_sent){ 2397 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 2398 } 2399 2400 if (!cmd_sent){ 2401 cmd_sent = hfp_ag_run_ring_and_clip(hfp_connection); 2402 } 2403 2404 if (!cmd_sent){ 2405 cmd_sent = hfp_ag_voice_recognition_state_machine(hfp_connection); 2406 } 2407 2408 // disconnect 2409 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 2410 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 2411 rfcomm_disconnect(hfp_connection->rfcomm_cid); 2412 } 2413 2414 if (cmd_sent){ 2415 hfp_connection->command = HFP_CMD_NONE; 2416 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2417 } 2418 } 2419 2420 static int hfp_parser_is_end_of_line(uint8_t byte){ 2421 return (byte == '\n') || (byte == '\r'); 2422 } 2423 2424 static void hfp_ag_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 2425 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 2426 if (size < 1) return; 2427 uint8_t status = ERROR_CODE_SUCCESS; 2428 2429 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 2430 #ifdef ENABLE_HFP_AT_MESSAGES 2431 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 2432 #endif 2433 2434 // process messages byte-wise 2435 int pos; 2436 for (pos = 0; pos < size ; pos++){ 2437 hfp_parse(hfp_connection, packet[pos], 0); 2438 2439 // parse until end of line 2440 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 2441 2442 hfp_generic_status_indicator_t * indicator; 2443 switch(hfp_connection->command){ 2444 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 2445 hfp_connection->command = HFP_CMD_NONE; 2446 hfp_connection->ag_vra_requested_by_hf = true; 2447 break; 2448 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 2449 hfp_connection->command = HFP_CMD_NONE; 2450 if (hfp_ag_response_and_hold_active){ 2451 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 2452 } 2453 hfp_ag_queue_ok(hfp_connection); 2454 break; 2455 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 2456 hfp_connection->command = HFP_CMD_NONE; 2457 switch(hfp_connection->ag_response_and_hold_action){ 2458 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 2459 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 2460 break; 2461 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 2462 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 2463 break; 2464 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 2465 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 2466 break; 2467 default: 2468 break; 2469 } 2470 hfp_ag_queue_ok(hfp_connection); 2471 break; 2472 case HFP_CMD_HF_INDICATOR_STATUS: 2473 hfp_connection->command = HFP_CMD_NONE; 2474 2475 if (hfp_connection->parser_indicator_index < hfp_ag_generic_status_indicators_nr){ 2476 indicator = &hfp_ag_generic_status_indicators[hfp_connection->parser_indicator_index]; 2477 switch (indicator->uuid){ 2478 case HFP_HF_INDICATOR_UUID_ENHANCED_SAFETY: 2479 if (hfp_connection->parser_indicator_value > 1) { 2480 hfp_ag_queue_error(hfp_connection); 2481 break; 2482 } 2483 hfp_ag_queue_ok(hfp_connection); 2484 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2485 break; 2486 case HFP_HF_INDICATOR_UUID_BATTERY_LEVEL: 2487 if (hfp_connection->parser_indicator_value > 100){ 2488 hfp_ag_queue_error(hfp_connection); 2489 break; 2490 } 2491 hfp_ag_queue_ok(hfp_connection); 2492 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2493 break; 2494 default: 2495 hfp_ag_queue_error(hfp_connection); 2496 break; 2497 } 2498 } else { 2499 hfp_ag_queue_error(hfp_connection); 2500 } 2501 break; 2502 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 2503 // expected by SLC state machine 2504 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 2505 hfp_connection->send_ag_indicators_segment = 0; 2506 hfp_connection->send_ag_status_indicators = 1; 2507 break; 2508 case HFP_CMD_LIST_CURRENT_CALLS: 2509 hfp_connection->command = HFP_CMD_NONE; 2510 hfp_connection->next_call_index = 0; 2511 hfp_connection->send_status_of_current_calls = 1; 2512 break; 2513 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 2514 hfp_connection->command = HFP_CMD_NONE; 2515 if (hfp_ag_subscriber_numbers_count == 0){ 2516 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2517 break; 2518 } 2519 hfp_connection->next_subscriber_number_to_send = 0; 2520 hfp_connection->send_subscriber_number = 1; 2521 break; 2522 case HFP_CMD_TRANSMIT_DTMF_CODES: 2523 { 2524 hfp_connection->command = HFP_CMD_NONE; 2525 char buffer[2]; 2526 buffer[0] = (char) hfp_connection->ag_dtmf_code; 2527 buffer[1] = 0; 2528 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 2529 break; 2530 } 2531 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 2532 hfp_connection->command = HFP_CMD_NONE; 2533 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 2534 break; 2535 case HFP_CMD_TURN_OFF_EC_AND_NR: 2536 hfp_connection->command = HFP_CMD_NONE; 2537 2538 if (get_bit(hfp_ag_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 2539 hfp_ag_queue_ok(hfp_connection); 2540 status = ERROR_CODE_SUCCESS; 2541 } else { 2542 hfp_ag_queue_error(hfp_connection); 2543 status = ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2544 } 2545 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 2546 break; 2547 case HFP_CMD_CALL_ANSWERED: 2548 hfp_connection->command = HFP_CMD_NONE; 2549 log_info("HFP: ATA"); 2550 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 2551 break; 2552 case HFP_CMD_HANG_UP_CALL: 2553 hfp_connection->command = HFP_CMD_NONE; 2554 hfp_ag_queue_ok(hfp_connection); 2555 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 2556 break; 2557 case HFP_CMD_CALL_HOLD: { 2558 hfp_connection->command = HFP_CMD_NONE; 2559 hfp_ag_queue_ok(hfp_connection); 2560 2561 switch (hfp_connection->ag_call_hold_action){ 2562 case 0: 2563 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2564 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2565 break; 2566 case 1: 2567 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2568 // Where both a held and a waiting call exist, the above procedures shall apply to the 2569 // waiting call (i.e., not to the held call) in conflicting situation. 2570 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2571 break; 2572 case 2: 2573 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2574 // Where both a held and a waiting call exist, the above procedures shall apply to the 2575 // waiting call (i.e., not to the held call) in conflicting situation. 2576 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2577 break; 2578 case 3: 2579 // Adds a held call to the conversation. 2580 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2581 break; 2582 case 4: 2583 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2584 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2585 break; 2586 default: 2587 break; 2588 } 2589 hfp_connection->call_index = 0; 2590 break; 2591 } 2592 case HFP_CMD_CALL_PHONE_NUMBER: 2593 hfp_connection->command = HFP_CMD_NONE; 2594 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, hfp_connection); 2595 break; 2596 case HFP_CMD_REDIAL_LAST_NUMBER: 2597 hfp_connection->command = HFP_CMD_NONE; 2598 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2599 break; 2600 case HFP_CMD_ENABLE_CLIP: 2601 hfp_connection->command = HFP_CMD_NONE; 2602 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2603 hfp_ag_queue_ok(hfp_connection); 2604 break; 2605 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2606 hfp_connection->command = HFP_CMD_NONE; 2607 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2608 hfp_ag_queue_ok(hfp_connection); 2609 break; 2610 case HFP_CMD_SET_SPEAKER_GAIN: 2611 hfp_connection->command = HFP_CMD_NONE; 2612 hfp_ag_queue_ok(hfp_connection); 2613 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2614 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2615 break; 2616 case HFP_CMD_SET_MICROPHONE_GAIN: 2617 hfp_connection->command = HFP_CMD_NONE; 2618 hfp_ag_queue_ok(hfp_connection); 2619 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2620 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2621 break; 2622 case HFP_CMD_CUSTOM_MESSAGE: 2623 hfp_connection->command = HFP_CMD_NONE; 2624 hfp_parser_reset_line_buffer(hfp_connection); 2625 log_info("Custom AT Command ID 0x%04x", hfp_connection->custom_at_command_id); 2626 hfp_ag_emit_custom_command_event(hfp_connection); 2627 break; 2628 case HFP_CMD_APPLE_ACCESSORY_INFORMATION: 2629 hfp_connection->command = HFP_CMD_NONE; 2630 if (hfp_ag_apple_device != NULL){ 2631 hfp_connection->send_apple_information = true; 2632 hfp_ag_queue_ok(hfp_connection); 2633 hfp_ag_emit_apple_accessory_information(hfp_connection); 2634 } else { 2635 hfp_ag_queue_error(hfp_connection); 2636 }; 2637 break; 2638 case HFP_CMD_APPLE_ACCESSORY_STATE: 2639 hfp_connection->command = HFP_CMD_NONE; 2640 if (hfp_ag_apple_device != NULL) { 2641 hfp_ag_emit_apple_accessory_state(hfp_connection); 2642 hfp_ag_queue_ok(hfp_connection); 2643 } else { 2644 hfp_ag_queue_error(hfp_connection); 2645 } 2646 break; 2647 case HFP_CMD_UNKNOWN: 2648 hfp_connection->command = HFP_CMD_NONE; 2649 hfp_ag_queue_error(hfp_connection); 2650 break; 2651 default: 2652 break; 2653 } 2654 } 2655 } 2656 2657 static void hfp_ag_run(void){ 2658 btstack_linked_list_iterator_t it; 2659 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2660 while (btstack_linked_list_iterator_has_next(&it)){ 2661 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2662 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2663 hfp_ag_run_for_context(hfp_connection); 2664 } 2665 } 2666 2667 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2668 hfp_connection_t * hfp_connection = NULL; 2669 switch (packet_type){ 2670 case RFCOMM_DATA_PACKET: 2671 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 2672 btstack_assert(hfp_connection != NULL); 2673 2674 hfp_ag_handle_rfcomm_data(hfp_connection, packet, size); 2675 hfp_ag_run_for_context(hfp_connection); 2676 return; 2677 case HCI_EVENT_PACKET: 2678 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2679 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2680 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid); 2681 btstack_assert(hfp_connection != NULL); 2682 2683 hfp_ag_run_for_context(hfp_connection); 2684 return; 2685 } 2686 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2687 break; 2688 default: 2689 break; 2690 } 2691 2692 hfp_ag_run(); 2693 } 2694 2695 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2696 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2697 hfp_ag_run(); 2698 } 2699 2700 void hfp_ag_init_codecs(uint8_t codecs_nr, const uint8_t * codecs){ 2701 btstack_assert(codecs_nr <= HFP_MAX_NUM_CODECS); 2702 if (codecs_nr > HFP_MAX_NUM_CODECS) return; 2703 2704 hfp_ag_codecs_nr = codecs_nr; 2705 uint8_t i; 2706 for (i=0; i < codecs_nr; i++){ 2707 hfp_ag_codecs[i] = codecs[i]; 2708 } 2709 } 2710 2711 void hfp_ag_init_supported_features(uint32_t supported_features){ 2712 hfp_ag_supported_features = supported_features; 2713 hfp_ag_in_band_ring_tone_active = has_in_band_ring_tone(); 2714 } 2715 2716 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2717 btstack_assert(ag_indicators_nr <= HFP_MAX_NUM_INDICATORS); 2718 if (ag_indicators_nr > HFP_MAX_NUM_CODECS) return; 2719 2720 hfp_ag_indicators_nr = ag_indicators_nr; 2721 (void)memcpy(hfp_ag_indicators, ag_indicators, 2722 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2723 } 2724 2725 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2726 btstack_assert(hf_indicators_nr <= HFP_MAX_NUM_INDICATORS); 2727 if (hf_indicators_nr > HFP_MAX_NUM_CODECS) return; 2728 2729 hfp_ag_generic_status_indicators_nr = hf_indicators_nr; 2730 (void)memcpy(hfp_ag_generic_status_indicators, hf_indicators, 2731 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2732 } 2733 2734 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2735 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2736 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2737 call_hold_services_nr * sizeof(char *)); 2738 } 2739 2740 void hfp_ag_init_apple_identification(const char * device, uint8_t features){ 2741 hfp_ag_apple_device = device; 2742 hfp_ag_apple_features = features; 2743 } 2744 2745 void hfp_ag_init(uint8_t rfcomm_channel_nr){ 2746 2747 hfp_init(); 2748 hfp_ag_call_hold_services_nr = 0; 2749 hfp_ag_response_and_hold_active = false; 2750 hfp_ag_indicators_nr = 0; 2751 hfp_ag_codecs_nr = 0; 2752 hfp_ag_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2753 hfp_ag_in_band_ring_tone_active = has_in_band_ring_tone(); 2754 hfp_ag_subscriber_numbers = NULL; 2755 hfp_ag_subscriber_numbers_count = 0; 2756 2757 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2758 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2759 2760 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2761 2762 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2763 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2764 2765 hfp_gsm_init(); 2766 } 2767 2768 void hfp_ag_deinit(void){ 2769 hfp_deinit(); 2770 hfp_gsm_deinit(); 2771 2772 hfp_ag_callback = NULL; 2773 hfp_ag_supported_features = 0; 2774 hfp_ag_codecs_nr = 0; 2775 hfp_ag_indicators_nr = 0; 2776 hfp_ag_call_hold_services_nr = 0; 2777 hfp_ag_apple_device = NULL; 2778 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2779 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 2780 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2781 hfp_ag_subscriber_numbers = NULL; 2782 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2783 hfp_ag_custom_call_sm_handler = NULL; 2784 } 2785 2786 uint8_t hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2787 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2788 } 2789 2790 uint8_t hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2791 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2792 if (!hfp_connection){ 2793 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2794 } 2795 2796 hfp_trigger_release_service_level_connection(hfp_connection); 2797 hfp_ag_run_for_context(hfp_connection); 2798 return ERROR_CODE_SUCCESS; 2799 } 2800 2801 uint8_t hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2802 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2803 if (!hfp_connection){ 2804 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2805 } 2806 2807 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2808 return ERROR_CODE_COMMAND_DISALLOWED; 2809 } 2810 2811 hfp_connection->extended_audio_gateway_error = error; 2812 hfp_ag_run_for_context(hfp_connection); 2813 return ERROR_CODE_SUCCESS; 2814 } 2815 2816 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2817 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 2818 return ERROR_CODE_COMMAND_DISALLOWED; 2819 } 2820 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 2821 return ERROR_CODE_COMMAND_DISALLOWED; 2822 } 2823 2824 hfp_connection->establish_audio_connection = 1; 2825 hfp_connection->sco_for_msbc_failed = 0; 2826 if (!has_codec_negotiation_feature(hfp_connection)){ 2827 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2828 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2829 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2830 // now, pick link settings 2831 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2832 #ifdef ENABLE_CC256X_ASSISTED_HFP 2833 hfp_cc256x_prepare_for_sco(hfp_connection); 2834 #endif 2835 return ERROR_CODE_SUCCESS; 2836 } 2837 2838 hfp_connection->ag_send_common_codec = true; 2839 hfp_connection->codecs_state = HFP_CODECS_IDLE; 2840 return ERROR_CODE_SUCCESS; 2841 } 2842 2843 uint8_t hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2844 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2845 if (!hfp_connection){ 2846 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2847 } 2848 uint8_t status = hfp_ag_setup_audio_connection(hfp_connection); 2849 if (status != ERROR_CODE_SUCCESS){ 2850 return status; 2851 } 2852 hfp_ag_run_for_context(hfp_connection); 2853 return ERROR_CODE_SUCCESS; 2854 } 2855 2856 uint8_t hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2857 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2858 if (!hfp_connection){ 2859 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2860 } 2861 2862 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 2863 return ERROR_CODE_COMMAND_DISALLOWED; 2864 } 2865 2866 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 2867 if (status == ERROR_CODE_SUCCESS){ 2868 hfp_ag_run_for_context(hfp_connection); 2869 } 2870 return status; 2871 } 2872 2873 /** 2874 * @brief Enable in-band ring tone 2875 */ 2876 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2877 if (has_in_band_ring_tone() == false){ 2878 return; 2879 } 2880 if (hfp_ag_in_band_ring_tone_active == use_in_band_ring_tone){ 2881 return; 2882 } 2883 2884 hfp_ag_in_band_ring_tone_active = use_in_band_ring_tone; 2885 2886 btstack_linked_list_iterator_t it; 2887 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2888 while (btstack_linked_list_iterator_has_next(&it)){ 2889 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2890 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2891 hfp_connection->ag_send_in_band_ring_tone_setting = true; 2892 hfp_ag_run_for_context(hfp_connection); 2893 } 2894 } 2895 2896 /** 2897 * @brief Called from GSM 2898 */ 2899 void hfp_ag_incoming_call(void){ 2900 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2901 } 2902 2903 void hfp_ag_outgoing_call_initiated(void) { 2904 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, NULL); 2905 } 2906 2907 /** 2908 * @brief number is stored. 2909 */ 2910 void hfp_ag_set_clip(uint8_t type, const char * number){ 2911 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2912 } 2913 2914 void hfp_ag_call_dropped(void){ 2915 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2916 } 2917 2918 // call from AG UI 2919 void hfp_ag_answer_incoming_call(void){ 2920 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2921 } 2922 2923 void hfp_ag_join_held_call(void){ 2924 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2925 } 2926 2927 void hfp_ag_terminate_call(void){ 2928 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2929 } 2930 2931 void hfp_ag_outgoing_call_ringing(void){ 2932 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2933 } 2934 2935 void hfp_ag_outgoing_call_established(void){ 2936 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2937 } 2938 2939 void hfp_ag_outgoing_call_rejected(void){ 2940 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2941 } 2942 2943 void hfp_ag_outgoing_call_accepted(void){ 2944 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2945 } 2946 2947 void hfp_ag_hold_incoming_call(void){ 2948 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2949 } 2950 2951 void hfp_ag_accept_held_incoming_call(void) { 2952 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2953 } 2954 2955 void hfp_ag_reject_held_incoming_call(void){ 2956 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2957 } 2958 2959 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2960 int indicator_index = get_ag_indicator_index_for_name(name); 2961 if (indicator_index < 0) return; 2962 hfp_ag_indicators[indicator_index].status = value; 2963 2964 btstack_linked_list_iterator_t it; 2965 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2966 while (btstack_linked_list_iterator_has_next(&it)){ 2967 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2968 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2969 if (!hfp_connection->ag_indicators[indicator_index].enabled) { 2970 log_info("Requested AG indicator '%s' update to %u, but it is not enabled", hfp_ag_indicators[indicator_index].name, value); 2971 continue; 2972 } 2973 log_info("AG indicator '%s' changed to %u, request transfer status", hfp_ag_indicators[indicator_index].name, value); 2974 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2975 hfp_ag_run_for_context(hfp_connection); 2976 } 2977 } 2978 2979 uint8_t hfp_ag_set_registration_status(int registration_status){ 2980 if ((registration_status < 0) || (registration_status > 1)){ 2981 return ERROR_CODE_COMMAND_DISALLOWED; 2982 } 2983 2984 if ( (registration_status == 0) && (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 2985 2986 // if network goes away wihle a call is active: 2987 // - the call gets dropped 2988 // - we send NO CARRIER 2989 // NOTE: the CALL=0 has to be sent before NO CARRIER 2990 2991 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2992 2993 btstack_linked_list_iterator_t it; 2994 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2995 while (btstack_linked_list_iterator_has_next(&it)){ 2996 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2997 hfp_connection->ag_send_no_carrier = true; 2998 } 2999 } 3000 hfp_ag_set_ag_indicator("service", registration_status); 3001 return ERROR_CODE_SUCCESS; 3002 } 3003 3004 uint8_t hfp_ag_set_signal_strength(int signal_strength){ 3005 if ((signal_strength < 0) || (signal_strength > 5)){ 3006 return ERROR_CODE_COMMAND_DISALLOWED; 3007 } 3008 3009 hfp_ag_set_ag_indicator("signal", signal_strength); 3010 return ERROR_CODE_SUCCESS; 3011 } 3012 3013 uint8_t hfp_ag_set_roaming_status(int roaming_status){ 3014 if ((roaming_status < 0) || (roaming_status > 1)){ 3015 return ERROR_CODE_COMMAND_DISALLOWED; 3016 } 3017 3018 hfp_ag_set_ag_indicator("roam", roaming_status); 3019 return ERROR_CODE_SUCCESS; 3020 } 3021 3022 uint8_t hfp_ag_set_battery_level(int battery_level){ 3023 if ((battery_level < 0) || (battery_level > 5)){ 3024 return ERROR_CODE_COMMAND_DISALLOWED; 3025 } 3026 hfp_ag_set_ag_indicator("battchg", battery_level); 3027 return ERROR_CODE_SUCCESS; 3028 } 3029 3030 uint8_t hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle){ 3031 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3032 if (!hfp_connection){ 3033 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3034 } 3035 3036 if (hfp_connection->emit_vra_enabled_after_audio_established){ 3037 return ERROR_CODE_COMMAND_DISALLOWED; 3038 } 3039 3040 bool enhanced_vra_supported = hfp_ag_enhanced_vra_flag_supported(hfp_connection); 3041 bool legacy_vra_supported = hfp_ag_vra_flag_supported(hfp_connection); 3042 if (!enhanced_vra_supported && !legacy_vra_supported){ 3043 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 3044 } 3045 3046 if (!hfp_ag_can_activate_voice_recognition(hfp_connection)){ 3047 return ERROR_CODE_COMMAND_DISALLOWED; 3048 } 3049 3050 hfp_connection->ag_activate_voice_recognition_value = 1; 3051 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 3052 hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 3053 hfp_connection->ag_audio_connection_opened_before_vra = hfp_ag_is_audio_connection_active(hfp_connection); 3054 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 3055 hfp_connection->ag_vra_send_command = true; 3056 hfp_ag_run_for_context(hfp_connection); 3057 return ERROR_CODE_SUCCESS; 3058 } 3059 3060 uint8_t hfp_ag_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 3061 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3062 if (!hfp_connection){ 3063 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3064 } 3065 3066 if (hfp_connection->emit_vra_enabled_after_audio_established){ 3067 return ERROR_CODE_COMMAND_DISALLOWED; 3068 } 3069 3070 bool enhanced_vra_supported = hfp_ag_enhanced_vra_flag_supported(hfp_connection); 3071 bool legacy_vra_supported = hfp_ag_vra_flag_supported(hfp_connection); 3072 3073 if (!enhanced_vra_supported && !legacy_vra_supported){ 3074 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 3075 } 3076 3077 if (!hfp_ag_voice_recognition_session_active(hfp_connection)){ 3078 return ERROR_CODE_COMMAND_DISALLOWED; 3079 } 3080 3081 hfp_connection->ag_activate_voice_recognition_value = 0; 3082 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 3083 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 3084 hfp_connection->ag_vra_send_command = true; 3085 hfp_ag_run_for_context(hfp_connection); 3086 return ERROR_CODE_SUCCESS; 3087 } 3088 3089 static uint8_t hfp_ag_enhanced_voice_recognition_send_state(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state){ 3090 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3091 if (!hfp_connection){ 3092 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3093 } 3094 3095 if (hfp_connection->emit_vra_enabled_after_audio_established){ 3096 return ERROR_CODE_COMMAND_DISALLOWED; 3097 } 3098 3099 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 3100 return ERROR_CODE_COMMAND_DISALLOWED; 3101 } 3102 3103 if (hfp_connection->vra_state != HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO){ 3104 return ERROR_CODE_COMMAND_DISALLOWED; 3105 } 3106 3107 bool enhanced_vra_supported = hfp_ag_enhanced_vra_flag_supported(hfp_connection); 3108 if (!enhanced_vra_supported ){ 3109 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 3110 } 3111 3112 3113 hfp_connection->ag_vra_state = state; 3114 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_STATUS; 3115 hfp_connection->ag_vra_send_command = true; 3116 hfp_ag_run_for_context(hfp_connection); 3117 return ERROR_CODE_SUCCESS; 3118 } 3119 3120 uint8_t hfp_ag_enhanced_voice_recognition_report_sending_audio(hci_con_handle_t acl_handle){ 3121 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_STARTING_SOUND); 3122 } 3123 uint8_t hfp_ag_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 3124 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_READY_TO_ACCEPT_AUDIO_INPUT); 3125 } 3126 uint8_t hfp_ag_enhanced_voice_recognition_report_processing_input(hci_con_handle_t acl_handle){ 3127 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_PROCESSING_AUDIO_INPUT); 3128 } 3129 3130 3131 uint8_t hfp_ag_enhanced_voice_recognition_send_message(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state, hfp_voice_recognition_message_t msg){ 3132 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3133 if (!hfp_connection){ 3134 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3135 } 3136 3137 if (hfp_connection->emit_vra_enabled_after_audio_established){ 3138 return ERROR_CODE_COMMAND_DISALLOWED; 3139 } 3140 3141 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 3142 return ERROR_CODE_COMMAND_DISALLOWED; 3143 } 3144 3145 if (hfp_connection->vra_state != HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO){ 3146 return ERROR_CODE_COMMAND_DISALLOWED; 3147 } 3148 3149 bool enhanced_vra_supported = hfp_ag_enhanced_vra_flag_supported(hfp_connection); 3150 if (!enhanced_vra_supported ){ 3151 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 3152 } 3153 3154 bool enhanced_vra_msg_supported = hfp_ag_can_send_enhanced_vra_message_flag_supported(hfp_connection); 3155 if (!enhanced_vra_msg_supported ){ 3156 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 3157 } 3158 3159 uint16_t message_len = (uint16_t) strlen(msg.text); 3160 3161 if (message_len > HFP_MAX_VR_TEXT_SIZE){ 3162 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 3163 } 3164 3165 if ((HFP_VR_TEXT_HEADER_SIZE + message_len) > hfp_connection->rfcomm_mtu){ 3166 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 3167 } 3168 3169 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_MSG; 3170 hfp_connection->ag_msg = msg; 3171 hfp_connection->ag_vra_state = state; 3172 hfp_connection->ag_vra_send_command = true; 3173 hfp_ag_run_for_context(hfp_connection); 3174 3175 return ERROR_CODE_SUCCESS; 3176 } 3177 3178 3179 uint8_t hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 3180 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3181 if (!hfp_connection){ 3182 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3183 } 3184 3185 if ((gain < 0) || (gain > 15)){ 3186 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 3187 return ERROR_CODE_COMMAND_DISALLOWED; 3188 } 3189 3190 if (hfp_connection->microphone_gain != gain){ 3191 hfp_connection->microphone_gain = gain; 3192 hfp_connection->send_microphone_gain = 1; 3193 } 3194 hfp_ag_run_for_context(hfp_connection); 3195 return ERROR_CODE_SUCCESS; 3196 } 3197 3198 uint8_t hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 3199 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3200 if (!hfp_connection){ 3201 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3202 } 3203 3204 if ((gain < 0) || (gain > 15)){ 3205 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 3206 return ERROR_CODE_COMMAND_DISALLOWED; 3207 } 3208 3209 if (hfp_connection->speaker_gain != gain){ 3210 hfp_connection->speaker_gain = gain; 3211 hfp_connection->send_speaker_gain = 1; 3212 } 3213 hfp_ag_run_for_context(hfp_connection); 3214 return ERROR_CODE_SUCCESS; 3215 } 3216 3217 uint8_t hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 3218 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3219 if (!hfp_connection){ 3220 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3221 } 3222 3223 hfp_ag_set_clip(0, number); 3224 hfp_connection->send_phone_number_for_voice_tag = 1; 3225 return ERROR_CODE_SUCCESS; 3226 } 3227 3228 uint8_t hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 3229 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3230 if (!hfp_connection){ 3231 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3232 } 3233 3234 hfp_ag_queue_error(hfp_connection); 3235 return ERROR_CODE_SUCCESS; 3236 } 3237 3238 uint8_t hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 3239 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3240 if (!hfp_connection){ 3241 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3242 } 3243 3244 hfp_ag_queue_ok(hfp_connection); 3245 return ERROR_CODE_SUCCESS; 3246 } 3247 3248 uint8_t hfp_ag_send_unsolicited_result_code(hci_con_handle_t acl_handle, const char * unsolicited_result_code){ 3249 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3250 if (!hfp_connection){ 3251 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3252 } 3253 if (hfp_connection->send_custom_message != NULL){ 3254 return ERROR_CODE_COMMAND_DISALLOWED; 3255 } 3256 hfp_connection->send_custom_message = unsolicited_result_code; 3257 hfp_ag_run_for_context(hfp_connection); 3258 return ERROR_CODE_SUCCESS; 3259 } 3260 3261 uint8_t hfp_ag_send_command_result_code(hci_con_handle_t acl_handle, bool ok){ 3262 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3263 if (!hfp_connection){ 3264 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3265 } 3266 if (ok){ 3267 hfp_ag_queue_ok(hfp_connection); 3268 } else { 3269 hfp_ag_queue_error(hfp_connection); 3270 } 3271 hfp_ag_run_for_context(hfp_connection); 3272 return ERROR_CODE_SUCCESS; 3273 } 3274 3275 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 3276 hfp_ag_subscriber_numbers = numbers; 3277 hfp_ag_subscriber_numbers_count = numbers_count; 3278 } 3279 3280 void hfp_ag_clear_last_dialed_number(void){ 3281 hfp_gsm_clear_last_dialed_number(); 3282 } 3283 3284 void hfp_ag_set_last_dialed_number(const char * number){ 3285 hfp_gsm_set_last_dialed_number(number); 3286 } 3287 3288 uint8_t hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 3289 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3290 if (!hfp_connection){ 3291 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3292 } 3293 3294 if (!hfp_connection->call_waiting_notification_enabled){ 3295 return ERROR_CODE_COMMAND_DISALLOWED; 3296 } 3297 3298 hfp_connection->ag_notify_incoming_call_waiting = 1; 3299 hfp_ag_run_for_context(hfp_connection); 3300 return ERROR_CODE_SUCCESS; 3301 } 3302 void hfp_ag_create_sdp_record_with_codecs(uint8_t * service, uint32_t service_record_handle, int rfcomm_channel_nr, 3303 const char * name, uint8_t ability_to_reject_call, uint16_t supported_features, 3304 uint8_t codecs_nr, const uint8_t * codecs){ 3305 if (!name){ 3306 name = hfp_ag_default_service_name; 3307 } 3308 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 3309 3310 /* 3311 * 0x01 – Ability to reject a call 3312 * 0x00 – No ability to reject a call 3313 */ 3314 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 3315 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 3316 3317 // Construct SupportedFeatures for SDP bitmap: 3318 // 3319 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 3320 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 3321 // 3322 // Wide band speech (bit 5) and LC3-SWB (bit 8) require Codec negotiation 3323 // 3324 uint16_t sdp_features = supported_features & 0x1f; 3325 3326 if (supported_features & (1 << HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 3327 sdp_features |= 1 << 6; 3328 } 3329 3330 if (supported_features & (1 << HFP_AGSF_VOICE_RECOGNITION_TEXT)){ 3331 sdp_features |= 1 << 7; 3332 } 3333 3334 // codecs 3335 if ((supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION)) != 0){ 3336 uint8_t i; 3337 for (i=0;i<codecs_nr;i++){ 3338 switch (codecs[i]){ 3339 case HFP_CODEC_MSBC: 3340 sdp_features |= 1 << 5; 3341 break; 3342 case HFP_CODEC_LC3_SWB: 3343 sdp_features |= 1 << 8; 3344 break; 3345 default: 3346 break; 3347 } 3348 } 3349 } 3350 3351 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 3352 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 3353 } 3354 3355 void hfp_ag_create_sdp_record(uint8_t * service, uint32_t service_record_handle, int rfcomm_channel_nr, const char * name, 3356 uint8_t ability_to_reject_call, uint16_t supported_features, int wide_band_speech){ 3357 uint8_t codecs_nr; 3358 const uint8_t * codecs; 3359 const uint8_t wide_band_codecs[] = { HFP_CODEC_MSBC }; 3360 if (wide_band_speech == 0){ 3361 codecs_nr = 0; 3362 codecs = NULL; 3363 } else { 3364 codecs_nr = 1; 3365 codecs = wide_band_codecs; 3366 } 3367 hfp_ag_create_sdp_record_with_codecs(service, service_record_handle, rfcomm_channel_nr, name, 3368 ability_to_reject_call, supported_features, codecs_nr, codecs); 3369 } 3370 3371 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 3372 btstack_assert(callback != NULL); 3373 3374 hfp_ag_callback = callback; 3375 hfp_set_ag_callback(callback); 3376 } 3377 3378 void hfp_ag_register_custom_call_sm_handler(bool (*handler)(hfp_ag_call_event_t event)){ 3379 hfp_ag_custom_call_sm_handler = handler; 3380 } 3381 3382 void hfp_ag_register_custom_at_command(hfp_custom_at_command_t * custom_at_command){ 3383 hfp_register_custom_ag_command(custom_at_command); 3384 } 3385