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 MATTHIAS 24 * RINGWALD 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 static void hfp_ag_trigger_ring_and_clip(); 85 86 #define HFP_SUBEVENT_INVALID 0xFFFF 87 88 // const 89 static const char hfp_ag_default_service_name[] = "Voice gateway"; 90 91 // globals 92 93 // higher layer callbacks 94 static btstack_packet_handler_t hfp_ag_callback; 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 // codecs 101 static uint8_t hfp_ag_codecs_nr; 102 static uint8_t hfp_ag_codecs[HFP_MAX_NUM_CODECS]; 103 104 // AG indicators 105 static int hfp_ag_indicators_nr; 106 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_INDICATORS]; 107 108 // generic status indicators 109 static int hfp_ag_generic_status_indicators_nr; 110 static hfp_generic_status_indicator_t hfp_ag_generic_status_indicators[HFP_MAX_NUM_INDICATORS]; 111 112 static int hfp_ag_call_hold_services_nr; 113 static char * hfp_ag_call_hold_services[6]; 114 115 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 116 static int hfp_ag_response_and_hold_active; 117 118 // Subscriber information entries 119 static hfp_phone_number_t * hfp_ag_subscriber_numbers; 120 static int hfp_ag_subscriber_numbers_count; 121 122 // call state 123 static btstack_timer_source_t hfp_ag_ring_timeout; 124 125 // code 126 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 127 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 128 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 129 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 130 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 131 } 132 return hfp_connection->ag_indicators_nr; 133 } 134 135 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 136 // TODO: save only value, and value changed in the hfp_connection? 137 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 138 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 139 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 140 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 141 } 142 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 143 } 144 145 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 146 int i; 147 for (i = 0; i < hfp_ag_indicators_nr; i++){ 148 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 149 return &hfp_ag_indicators[i]; 150 } 151 } 152 return NULL; 153 } 154 155 static int get_ag_indicator_index_for_name(const char * name){ 156 int i; 157 for (i = 0; i < hfp_ag_indicators_nr; i++){ 158 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 159 return i; 160 } 161 } 162 return -1; 163 } 164 165 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 166 btstack_linked_list_iterator_t it; 167 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 168 while (btstack_linked_list_iterator_has_next(&it)){ 169 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 170 if (hfp_connection->acl_handle != handle) continue; 171 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 172 return hfp_connection; 173 } 174 return NULL; 175 } 176 177 static int use_in_band_tone(void){ 178 return get_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 179 } 180 181 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 182 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 183 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 184 return hf && ag; 185 } 186 187 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 188 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 189 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_THREE_WAY_CALLING); 190 return hf && ag; 191 } 192 193 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 194 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 195 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_HF_INDICATORS); 196 return hf && ag; 197 } 198 199 /* unsolicited responses */ 200 201 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 202 char buffer[20]; 203 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", 204 HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 205 buffer[sizeof(buffer) - 1] = 0; 206 return send_str_over_rfcomm(cid, buffer); 207 } 208 209 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 210 char buffer[40]; 211 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n\r\nOK\r\n", 212 HFP_SUPPORTED_FEATURES, hfp_ag_supported_features); 213 buffer[sizeof(buffer) - 1] = 0; 214 return send_str_over_rfcomm(cid, buffer); 215 } 216 217 static int hfp_ag_send_ok(uint16_t cid){ 218 char buffer[10]; 219 snprintf(buffer, sizeof(buffer), "\r\nOK\r\n"); 220 buffer[sizeof(buffer) - 1] = 0; 221 return send_str_over_rfcomm(cid, buffer); 222 } 223 224 static int hfp_ag_send_ring(uint16_t cid){ 225 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 226 } 227 228 static int hfp_ag_send_no_carrier(uint16_t cid){ 229 char buffer[15]; 230 snprintf(buffer, sizeof(buffer), "\r\nNO CARRIER\r\n"); 231 buffer[sizeof(buffer) - 1] = 0; 232 return send_str_over_rfcomm(cid, buffer); 233 } 234 235 static int hfp_ag_send_clip(uint16_t cid){ 236 char buffer[50]; 237 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, 238 hfp_gsm_clip_number(), hfp_gsm_clip_type()); 239 buffer[sizeof(buffer) - 1] = 0; 240 return send_str_over_rfcomm(cid, buffer); 241 } 242 243 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 244 char buffer[50]; 245 snprintf(buffer, sizeof(buffer), "\r\n%s: ,\"%s\",%u, , \r\n", 246 HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 247 buffer[sizeof(buffer) - 1] = 0; 248 return send_str_over_rfcomm(cid, buffer); 249 } 250 251 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 252 char buffer[50]; 253 snprintf(buffer, sizeof(buffer), "\r\n%s: %s\r\n", 254 HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 255 buffer[sizeof(buffer) - 1] = 0; 256 return send_str_over_rfcomm(cid, buffer); 257 } 258 259 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 260 char buffer[50]; 261 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", 262 HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), 263 hfp_gsm_clip_type()); 264 buffer[sizeof(buffer) - 1] = 0; 265 return send_str_over_rfcomm(cid, buffer); 266 } 267 268 static int hfp_ag_send_error(uint16_t cid){ 269 char buffer[10]; 270 snprintf(buffer, sizeof(buffer), "\r\nERROR\r\n"); 271 buffer[sizeof(buffer) - 1] = 0; 272 return send_str_over_rfcomm(cid, buffer); 273 } 274 275 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 276 char buffer[20]; 277 snprintf(buffer, sizeof(buffer), "\r\n%s=%d\r\n", 278 HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 279 buffer[sizeof(buffer) - 1] = 0; 280 return send_str_over_rfcomm(cid, buffer); 281 } 282 283 // get size for indicator string 284 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 285 // template: ("$NAME",($MIN,$MAX)) 286 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 287 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 288 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 289 } 290 291 // store indicator 292 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer, uint16_t buffer_size){ 293 snprintf((char *)buffer, buffer_size, "(\"%s\",(%d,%d)),", 294 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 295 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 296 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 297 ((char *)buffer)[buffer_size - 1] = 0; 298 } 299 300 // structure: header [indicator [comma indicator]] footer 301 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 302 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 303 if (!num_indicators) return 2; 304 return 3 + ((num_indicators-1) * 2); 305 } 306 307 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 308 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 309 if (index == 0) { 310 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 311 } 312 index--; 313 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 314 int indicator_index = index >> 1; 315 if ((index & 1) == 0){ 316 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 317 } 318 if (indicator_index == (num_indicators - 1)){ 319 return 8; // "\r\n\r\nOK\r\n" 320 } 321 return 1; // comma 322 } 323 324 static void hfp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer, uint16_t buffer_size){ 325 if (index == 0){ 326 *buffer++ = '\r'; 327 *buffer++ = '\n'; 328 int len = strlen(HFP_INDICATOR); 329 (void)memcpy(buffer, HFP_INDICATOR, len); 330 buffer += len; 331 *buffer++ = ':'; 332 return; 333 } 334 index--; 335 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 336 int indicator_index = index >> 1; 337 if ((index & 1) == 0){ 338 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer, buffer_size); 339 return; 340 } 341 if (indicator_index == (num_indicators-1)){ 342 (void)memcpy(buffer, "\r\n\r\nOK\r\n", 8); 343 return; 344 } 345 *buffer = ','; 346 } 347 348 static int hfp_ag_generic_indicators_join(char * buffer, int buffer_size){ 349 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 350 int i; 351 int offset = 0; 352 for (i = 0; i < (hfp_ag_generic_status_indicators_nr - 1); i++) { 353 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_generic_status_indicators[i].uuid); 354 } 355 if (i < hfp_ag_generic_status_indicators_nr){ 356 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_generic_status_indicators[i].uuid); 357 } 358 return offset; 359 } 360 361 static int hfp_ag_generic_indicators_initial_status_join(char * buffer, int buffer_size){ 362 if (buffer_size < (hfp_ag_generic_status_indicators_nr * 3)) return 0; 363 int i; 364 int offset = 0; 365 for (i = 0; i < hfp_ag_generic_status_indicators_nr; i++) { 366 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); 367 } 368 return offset; 369 } 370 371 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 372 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 373 int i; 374 int offset = 0; 375 for (i = 0; i < (hfp_ag_indicators_nr-1); i++) { 376 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 377 } 378 if (i<hfp_ag_indicators_nr){ 379 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 380 } 381 return offset; 382 } 383 384 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 385 if (buffer_size < (hfp_ag_call_hold_services_nr * 3)) return 0; 386 int i; 387 int offset = snprintf(buffer, buffer_size, "("); 388 for (i = 0; i < (hfp_ag_call_hold_services_nr-1); i++) { 389 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 390 } 391 if (i<hfp_ag_call_hold_services_nr){ 392 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 393 } 394 return offset; 395 } 396 397 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 398 int start_segment, int num_segments, 399 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 400 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer, uint16_t buffer_size)){ 401 402 // assumes: can send now == true 403 // assumes: num segments > 0 404 // assumes: individual segments are smaller than MTU 405 rfcomm_reserve_packet_buffer(); 406 int mtu = rfcomm_get_max_frame_size(cid); 407 uint8_t * data = rfcomm_get_outgoing_buffer(); 408 int offset = 0; 409 int segment = start_segment; 410 while (segment < num_segments){ 411 int segment_len = get_segment_len(hfp_connection, segment); 412 if ((offset + segment_len + 1) > mtu) break; 413 // append segment. As it appends a '\0', we provide a buffer one byte larger 414 store_segment(hfp_connection, segment, data+offset, segment_len + 1); 415 offset += segment_len; 416 segment++; 417 } 418 rfcomm_send_prepared(cid, offset); 419 #ifdef ENABLE_HFP_AT_MESSAGES 420 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_SENT, (char *) data); 421 #endif 422 return segment; 423 } 424 425 // returns next segment to store 426 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 427 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 428 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 429 hfp_ag_indicators_cmd_generator_get_segment_len, 430 hfp_ag_indicators_cmd_generator_store_segment); 431 } 432 433 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 434 char buffer[40]; 435 const int size = sizeof(buffer); 436 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 437 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 438 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 439 return send_str_over_rfcomm(cid, buffer); 440 } 441 442 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 443 char buffer[40]; 444 const int size = sizeof(buffer); 445 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 446 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 447 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 448 return send_str_over_rfcomm(cid, buffer); 449 } 450 451 452 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 453 return hfp_ag_send_ok(cid); 454 } 455 456 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 457 char buffer[40]; 458 const int size = sizeof(buffer); 459 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 460 offset += hfp_ag_generic_indicators_join(buffer + offset, size - offset - 10); 461 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 462 return send_str_over_rfcomm(cid, buffer); 463 } 464 465 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 466 char buffer[40]; 467 int offset = hfp_ag_generic_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 468 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 469 return send_str_over_rfcomm(cid, buffer); 470 } 471 472 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 473 char buffer[20]; 474 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d\r\n", 475 HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, 476 indicator->status); 477 buffer[sizeof(buffer) - 1] = 0; 478 return send_str_over_rfcomm(cid, buffer); 479 } 480 481 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 482 char buffer[41]; 483 if (strlen(op.name) == 0){ 484 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 485 } else { 486 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 487 offset += snprintf(buffer+offset, 16, "%s", op.name); 488 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 489 } 490 return send_str_over_rfcomm(cid, buffer); 491 } 492 493 static inline int hfp_ag_send_cmd_with_space_and_int(uint16_t cid, const char * cmd, uint8_t value){ 494 char buffer[30]; 495 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", cmd, value); 496 return send_str_over_rfcomm(cid, buffer); 497 } 498 499 500 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 501 char buffer[30]; 502 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 503 return send_str_over_rfcomm(cid, buffer); 504 } 505 506 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 507 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 508 } 509 510 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 511 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 512 } 513 514 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 515 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 516 } 517 518 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 519 return hfp_ag_send_cmd_with_space_and_int(cid, HFP_RESPONSE_AND_HOLD, state); 520 } 521 522 static int hfp_ag_send_enhanced_voice_recognition_state_cmd(hfp_connection_t * hfp_connection){ 523 char buffer[30]; 524 snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, hfp_connection->enhanced_voice_recognition_enabled, hfp_connection->ag_vra_state); 525 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 526 } 527 528 static int hfp_ag_send_voice_recognition_cmd(hfp_connection_t * hfp_connection, uint8_t activate_voice_recognition){ 529 char buffer[30]; 530 if (hfp_connection->enhanced_voice_recognition_enabled){ 531 snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition, hfp_connection->ag_vra_state); 532 } else { 533 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 534 } 535 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 536 } 537 538 static int hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection_t * hfp_connection){ 539 char buffer[100]; 540 snprintf(buffer, sizeof(buffer), "\r\n%s: 1,%d,%X,%d,%d,\"%s\"\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, 541 hfp_connection->ag_vra_state, 542 hfp_connection->ag_msg.text_id, 543 hfp_connection->ag_msg.text_type, 544 hfp_connection->ag_msg.text_operation, 545 hfp_connection->ag_msg.text); 546 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 547 } 548 549 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 550 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 551 552 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_ag_codecs_nr, hfp_ag_codecs)){ 553 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 554 return HFP_CODEC_MSBC; 555 } 556 } 557 return HFP_CODEC_CVSD; 558 } 559 560 /* state machines */ 561 562 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 563 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_ag_supported_features & (1 << HFP_AGSF_ESCO_S4)); 564 } 565 566 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 567 /* events ( == commands): 568 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 569 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 570 hf_trigger_codec_connection_setup == received BCC 571 ag_trigger_codec_connection_setup == received from AG to send BCS 572 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 573 */ 574 switch (hfp_connection->codecs_state){ 575 case HFP_CODECS_EXCHANGED: 576 if (hfp_connection->command == HFP_CMD_AVAILABLE_CODECS){ 577 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 578 return 1; 579 } 580 break; 581 582 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 583 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 584 break; 585 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 586 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 587 break; 588 default: 589 break; 590 } 591 592 switch (hfp_connection->command){ 593 case HFP_CMD_AVAILABLE_CODECS: 594 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 595 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 596 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 597 return 1; 598 } 599 600 switch (hfp_connection->codecs_state){ 601 case HFP_CODECS_AG_SENT_COMMON_CODEC: 602 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 603 break; 604 default: 605 break; 606 } 607 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 608 return 1; 609 610 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 611 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 612 hfp_connection->establish_audio_connection = 1; 613 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 614 return 1; 615 616 case HFP_CMD_AG_SEND_COMMON_CODEC: 617 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 618 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 619 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 620 return 1; 621 622 case HFP_CMD_HF_CONFIRMED_CODEC: 623 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 624 hfp_connection->codecs_state = HFP_CODECS_ERROR; 625 hfp_ag_send_error(hfp_connection->rfcomm_cid); 626 return 1; 627 } 628 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 629 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 630 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 631 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 632 // now, pick link settings 633 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 634 #ifdef ENABLE_CC256X_ASSISTED_HFP 635 hfp_cc256x_prepare_for_sco(hfp_connection); 636 #endif 637 return 1; 638 default: 639 break; 640 } 641 return 0; 642 } 643 644 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 645 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 646 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 647 648 // if active call exist, set per-hfp_connection state active, too (when audio is on) 649 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 650 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 651 } 652 // if AG is ringing, also start ringing on the HF 653 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 654 switch (hfp_gsm_callsetup_status()){ 655 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 656 hfp_ag_hf_start_ringing_incoming(hfp_connection); 657 break; 658 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 659 hfp_ag_hf_start_ringing_outgoing(hfp_connection); 660 break; 661 default: 662 break; 663 } 664 } 665 } 666 667 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 668 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 669 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 670 int sent = 0; 671 switch(hfp_connection->command){ 672 case HFP_CMD_SUPPORTED_FEATURES: 673 switch(hfp_connection->state){ 674 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 675 case HFP_EXCHANGE_SUPPORTED_FEATURES: 676 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_ag_codecs, &hfp_ag_codecs_nr); 677 if (has_codec_negotiation_feature(hfp_connection)){ 678 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 679 } else { 680 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 681 } 682 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 683 return 1; 684 default: 685 break; 686 } 687 break; 688 case HFP_CMD_AVAILABLE_CODECS: 689 sent = codecs_exchange_state_machine(hfp_connection); 690 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 691 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 692 } 693 return sent; 694 695 case HFP_CMD_RETRIEVE_AG_INDICATORS: 696 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 697 // HF requested AG Indicators and we did expect it 698 hfp_connection->send_ag_indicators_segment = 0; 699 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 700 // continue below in state switch 701 } 702 break; 703 704 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 705 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 706 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 707 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 708 return 1; 709 710 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 711 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 712 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 713 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 714 } else if (has_hf_indicators_feature(hfp_connection)){ 715 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 716 } else { 717 hfp_ag_slc_established(hfp_connection); 718 } 719 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 720 return 1; 721 722 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 723 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 724 if (has_hf_indicators_feature(hfp_connection)){ 725 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 726 } 727 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 728 if (!has_hf_indicators_feature(hfp_connection)){ 729 hfp_ag_slc_established(hfp_connection); 730 } 731 return 1; 732 733 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 734 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 735 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 736 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 737 return 1; 738 739 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 740 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 741 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 742 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 743 return 1; 744 745 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 746 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 747 hfp_ag_slc_established(hfp_connection); 748 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 749 return 1; 750 default: 751 break; 752 } 753 754 switch (hfp_connection->state){ 755 case HFP_RETRIEVE_INDICATORS: { 756 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 757 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 758 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 759 if (next_segment < num_segments){ 760 // prepare sending of next segment 761 hfp_connection->send_ag_indicators_segment = next_segment; 762 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 763 } else { 764 // done, go to next state 765 hfp_connection->send_ag_indicators_segment = 0; 766 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 767 } 768 return 1; 769 } 770 default: 771 break; 772 } 773 return 0; 774 } 775 776 static bool hfp_ag_voice_recognition_supported(hfp_connection_t * hfp_connection, bool enhanced){ 777 uint8_t ag_vra_flag = HFP_AGSF_VOICE_RECOGNITION_FUNCTION; 778 uint8_t hf_vra_flag = HFP_HFSF_VOICE_RECOGNITION_FUNCTION; 779 780 if (enhanced){ 781 ag_vra_flag = HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS; 782 hf_vra_flag = HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS; 783 } 784 785 int ag = get_bit(hfp_ag_supported_features, ag_vra_flag); 786 int hf = get_bit(hfp_connection->remote_supported_features, hf_vra_flag); 787 return hf && ag; 788 } 789 790 static uint8_t hfp_ag_can_activate_voice_recognition(hfp_connection_t * hfp_connection, bool enhanced){ 791 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 792 return ERROR_CODE_COMMAND_DISALLOWED; 793 } 794 if (!hfp_ag_voice_recognition_supported(hfp_connection, enhanced)){ 795 return ERROR_CODE_COMMAND_DISALLOWED; 796 } 797 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_OFF){ 798 return ERROR_CODE_COMMAND_DISALLOWED; 799 } 800 return ERROR_CODE_SUCCESS; 801 } 802 803 static uint8_t hfp_ag_voice_recognition_session_active(hfp_connection_t * hfp_connection, bool enhanced){ 804 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 805 return ERROR_CODE_COMMAND_DISALLOWED; 806 } 807 if (!hfp_ag_voice_recognition_supported(hfp_connection, enhanced)){ 808 return ERROR_CODE_COMMAND_DISALLOWED; 809 } 810 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 811 if (hfp_connection->vra_state == HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO){ 812 return ERROR_CODE_SUCCESS; 813 } 814 return ERROR_CODE_COMMAND_DISALLOWED; 815 } 816 return ERROR_CODE_SUCCESS; 817 } 818 819 static bool hfp_ag_can_send_enahnced_voice_recognition_message(hfp_connection_t * hfp_connection, bool enhanced){ 820 if (hfp_ag_voice_recognition_session_active(hfp_connection, enhanced) == ERROR_CODE_SUCCESS){ 821 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_VOICE_RECOGNITION_TEXT); 822 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_TEXT); 823 return hf && ag; 824 } 825 return false; 826 } 827 828 static bool hfp_ag_is_audio_connection_active(hfp_connection_t * hfp_connection){ 829 switch (hfp_connection->state){ 830 case HFP_W2_CONNECT_SCO: 831 case HFP_W4_SCO_CONNECTED: 832 case HFP_AUDIO_CONNECTION_ESTABLISHED: 833 return true; 834 default: 835 return false; 836 } 837 } 838 839 static void hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection_t * hfp_connection, uint8_t status){ 840 hci_con_handle_t acl_handle = (hfp_connection != NULL) ? hfp_connection->acl_handle : HCI_CON_HANDLE_INVALID; 841 842 uint8_t event[6]; 843 event[0] = HCI_EVENT_HFP_META; 844 event[1] = sizeof(event) - 2; 845 event[2] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE_SENT; 846 little_endian_store_16(event, 3, acl_handle); 847 event[5] = status; 848 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 849 } 850 851 852 static void hfp_ag_emit_hf_indicator_value(hfp_connection_t * hfp_connection, uint16_t uuid, uint8_t value){ 853 hci_con_handle_t acl_handle = (hfp_connection != NULL) ? hfp_connection->acl_handle : HCI_CON_HANDLE_INVALID; 854 855 uint8_t event[8]; 856 event[0] = HCI_EVENT_HFP_META; 857 event[1] = sizeof(event) - 2; 858 event[2] = HFP_SUBEVENT_HF_INDICATOR; 859 little_endian_store_16(event, 3, acl_handle); 860 little_endian_store_16(event, 5, uuid); 861 event[7] = value; 862 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 863 } 864 865 static void hfp_ag_emit_general_simple_event(uint8_t event_subtype){ 866 if (!hfp_ag_callback) return; 867 868 uint8_t event[5]; 869 event[0] = HCI_EVENT_HFP_META; 870 event[1] = sizeof(event) - 2; 871 event[2] = event_subtype; 872 little_endian_store_16(event, 3, HCI_CON_HANDLE_INVALID); 873 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 874 } 875 876 static int hfp_ag_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 877 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 878 return 0; 879 } 880 int done = 0; 881 uint8_t status; 882 883 switch (hfp_connection->command){ 884 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 885 switch (hfp_connection->vra_state_requested){ 886 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_MSG: 887 done = hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection); 888 if (done == 0){ 889 hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 890 } else { 891 hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection, ERROR_CODE_SUCCESS); 892 } 893 hfp_connection->vra_state_requested = hfp_connection->vra_state; 894 return done; 895 896 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_STATUS: 897 done = hfp_ag_send_enhanced_voice_recognition_state_cmd(hfp_connection); 898 if (done == 0){ 899 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 900 } else { 901 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 902 } 903 hfp_connection->vra_state_requested = hfp_connection->vra_state; 904 return done; 905 906 default: 907 done = hfp_ag_send_voice_recognition_cmd(hfp_connection, hfp_connection->ag_activate_voice_recognition_value); 908 if (done == 0){ 909 hfp_connection->vra_state_requested = hfp_connection->vra_state; 910 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_COMMAND_DISALLOWED); 911 return 0; 912 } 913 break; 914 } 915 break; 916 917 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 918 // HF initiatied voice recognition, parser extracted activation value 919 switch (hfp_connection->ag_activate_voice_recognition_value){ 920 case 0: 921 if (hfp_ag_voice_recognition_session_active(hfp_connection, hfp_connection->enhanced_voice_recognition_enabled) == ERROR_CODE_SUCCESS){ 922 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 923 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 924 } 925 break; 926 927 case 1: 928 if (hfp_ag_can_activate_voice_recognition(hfp_connection, hfp_connection->enhanced_voice_recognition_enabled) == ERROR_CODE_SUCCESS){ 929 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 930 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 931 } 932 break; 933 934 case 2: 935 if (hfp_ag_voice_recognition_session_active(hfp_connection, hfp_connection->enhanced_voice_recognition_enabled) == ERROR_CODE_SUCCESS){ 936 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 937 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 938 } 939 break; 940 default: 941 break; 942 } 943 if (done == 0){ 944 hfp_connection->vra_state_requested = hfp_connection->vra_state; 945 done = hfp_ag_send_error(hfp_connection->rfcomm_cid); 946 return 1; 947 } 948 break; 949 950 default: 951 return 0; 952 } 953 954 switch (hfp_connection->vra_state_requested){ 955 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 956 if (!hfp_ag_is_audio_connection_active(hfp_connection)){ 957 status = hfp_ag_setup_audio_connection(hfp_connection); 958 if (status != ERROR_CODE_SUCCESS){ 959 hfp_connection->vra_state_requested = hfp_connection->vra_state; 960 hfp_emit_voice_recognition_state_event(hfp_connection, status); 961 return 0; 962 } 963 } 964 hfp_connection->enhanced_voice_recognition_enabled = true; 965 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 966 hfp_connection->vra_state_requested = hfp_connection->vra_state; 967 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 968 break; 969 970 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 971 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 972 hfp_connection->vra_state_requested = hfp_connection->vra_state; 973 974 // release audio connection only if it was opened after audio VR activated 975 if (hfp_ag_is_audio_connection_active(hfp_connection) && !hfp_connection->ag_audio_connection_opened_before_vra){ 976 hfp_trigger_release_audio_connection(hfp_connection); 977 } 978 979 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 980 break; 981 982 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 983 // open only if audio connection does not already exist 984 if (!hfp_ag_is_audio_connection_active(hfp_connection)){ 985 status = hfp_ag_setup_audio_connection(hfp_connection); 986 if (status != ERROR_CODE_SUCCESS){ 987 hfp_connection->vra_state_requested = hfp_connection->vra_state; 988 hfp_emit_voice_recognition_state_event(hfp_connection, status); 989 return 0; 990 } 991 } 992 993 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 994 hfp_connection->vra_state_requested = hfp_connection->vra_state; 995 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 996 break; 997 998 default: 999 break; 1000 } 1001 return done; 1002 } 1003 1004 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 1005 int sent = codecs_exchange_state_machine(hfp_connection); 1006 if (sent) return 1; 1007 1008 switch(hfp_connection->command){ 1009 1010 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1011 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 1012 return 1; 1013 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 1014 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 1015 return 1; 1016 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 1017 if (hfp_connection->network_operator.format != 0){ 1018 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1019 } else { 1020 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1021 } 1022 return 1; 1023 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 1024 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1025 return 1; 1026 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 1027 if (hfp_connection->extended_audio_gateway_error){ 1028 hfp_connection->extended_audio_gateway_error = 0; 1029 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 1030 return 1; 1031 } 1032 break; 1033 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 1034 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1035 return 1; 1036 default: 1037 break; 1038 } 1039 return 0; 1040 } 1041 1042 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 1043 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 1044 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 1045 1046 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1047 1048 if (hfp_connection->release_audio_connection){ 1049 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 1050 hfp_connection->release_audio_connection = 0; 1051 gap_disconnect(hfp_connection->sco_handle); 1052 return 1; 1053 } 1054 1055 // accept incoming audio connection (codec negotiation is not used) 1056 if (hfp_connection->accept_sco){ 1057 // notify about codec selection if not done already 1058 if (hfp_connection->negotiated_codec == 0){ 1059 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 1060 } 1061 // 1062 bool incoming_eSCO = hfp_connection->accept_sco == 2; 1063 hfp_connection->accept_sco = 0; 1064 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1065 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 1066 return 1; 1067 } 1068 1069 // run codecs exchange 1070 int sent = codecs_exchange_state_machine(hfp_connection); 1071 if (sent) return 1; 1072 1073 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 1074 if (hfp_connection->establish_audio_connection){ 1075 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1076 hfp_connection->establish_audio_connection = 0; 1077 hfp_setup_synchronous_connection(hfp_connection); 1078 return 1; 1079 } 1080 return 0; 1081 } 1082 1083 static void hfp_ag_set_callsetup_indicator(void){ 1084 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1085 if (!indicator){ 1086 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1087 return; 1088 }; 1089 indicator->status = hfp_gsm_callsetup_status(); 1090 } 1091 1092 static void hfp_ag_set_callheld_indicator(void){ 1093 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1094 if (!indicator){ 1095 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1096 return; 1097 }; 1098 indicator->status = hfp_gsm_callheld_status(); 1099 } 1100 1101 // 1102 // transition implementations for hfp_ag_call_state_machine 1103 // 1104 1105 static void hfp_ag_hf_start_ringing_incoming(hfp_connection_t * hfp_connection){ 1106 if (use_in_band_tone()){ 1107 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 1108 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1109 } else { 1110 hfp_connection->call_state = HFP_CALL_INCOMING_RINGING; 1111 } 1112 } 1113 1114 static void hfp_ag_hf_start_ringing_outgoing(hfp_connection_t * hfp_connection){ 1115 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1116 } 1117 1118 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 1119 hfp_connection->ag_ring = 0; 1120 hfp_connection->ag_send_clip = 0; 1121 } 1122 1123 1124 static void hfp_ag_trigger_incoming_call_during_active_one(void){ 1125 btstack_linked_list_iterator_t it; 1126 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1127 while (btstack_linked_list_iterator_has_next(&it)){ 1128 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1129 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1130 if (hfp_connection->call_state != HFP_CALL_ACTIVE) continue; 1131 1132 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 1133 hfp_ag_run_for_context(hfp_connection); 1134 } 1135 } 1136 1137 static void hfp_ag_trigger_ring_and_clip() { 1138 btstack_linked_list_iterator_t it; 1139 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1140 while (btstack_linked_list_iterator_has_next(&it)){ 1141 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1142 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1143 switch (hfp_connection->call_state){ 1144 case HFP_CALL_INCOMING_RINGING: 1145 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1146 case HFP_CALL_OUTGOING_RINGING: 1147 // Queue RING on this connection 1148 hfp_connection->ag_ring = 1; 1149 1150 // HFP v1.8, 4.23 Calling Line Identification (CLI) Notification 1151 // "If the calling subscriber number information is available from the network, the AG shall issue the 1152 // +CLIP unsolicited result code just after every RING indication when the HF is alerted in an incoming call." 1153 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1154 1155 // trigger next message 1156 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1157 break; 1158 default: 1159 break; 1160 } 1161 } 1162 } 1163 1164 // trigger RING and CLIP messages on connections that are ringing 1165 static void hfp_ag_ring_timeout_handler(btstack_timer_source_t * timer){ 1166 hfp_ag_trigger_ring_and_clip(); 1167 1168 btstack_run_loop_set_timer(timer, RING_PERIOD_MS); // 2 seconds timeout 1169 btstack_run_loop_add_timer(timer); 1170 } 1171 1172 static void hfp_ag_ring_timeout_stop(void){ 1173 btstack_run_loop_remove_timer(&hfp_ag_ring_timeout); 1174 } 1175 1176 static void hfp_ag_start_ringing(void){ 1177 // setup ring timer 1178 btstack_run_loop_remove_timer(&hfp_ag_ring_timeout); 1179 btstack_run_loop_set_timer_handler(&hfp_ag_ring_timeout, hfp_ag_ring_timeout_handler); 1180 btstack_run_loop_set_timer(&hfp_ag_ring_timeout, RING_PERIOD_MS); // 2 seconds timeout 1181 btstack_run_loop_add_timer(&hfp_ag_ring_timeout); 1182 1183 // emit start ringing 1184 hfp_ag_emit_general_simple_event(HFP_SUBEVENT_START_RINGING); 1185 1186 // send initial RING + CLIP 1187 hfp_ag_trigger_ring_and_clip(); 1188 } 1189 1190 static void hfp_ag_stop_ringing(void){ 1191 hfp_ag_ring_timeout_stop(); 1192 hfp_ag_emit_general_simple_event(HFP_SUBEVENT_STOP_RINGING); 1193 1194 btstack_linked_list_iterator_t it; 1195 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1196 while (btstack_linked_list_iterator_has_next(&it)){ 1197 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1198 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1199 if ((hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) && 1200 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1201 hfp_ag_hf_stop_ringing(hfp_connection); 1202 } 1203 } 1204 1205 static void hfp_ag_trigger_incoming_call_idle(void){ 1206 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 1207 if (indicator_index < 0) return; 1208 1209 // update callsetup state in connections 1210 btstack_linked_list_iterator_t it; 1211 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1212 while (btstack_linked_list_iterator_has_next(&it)){ 1213 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1214 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1215 if (hfp_connection->call_state != HFP_CALL_IDLE) continue; 1216 1217 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1218 1219 hfp_ag_hf_start_ringing_incoming(hfp_connection); 1220 1221 hfp_ag_run_for_context(hfp_connection); 1222 } 1223 1224 // start local ringing - started after connection state has been updated 1225 hfp_ag_start_ringing(); 1226 } 1227 1228 static void hfp_ag_trigger_outgoing_call(void){ 1229 btstack_linked_list_iterator_t it; 1230 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1231 while (btstack_linked_list_iterator_has_next(&it)){ 1232 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1233 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1234 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1235 if (hfp_connection->call_state == HFP_CALL_IDLE){ 1236 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1237 } 1238 } 1239 } 1240 1241 static void hfp_ag_handle_outgoing_call_accepted(hfp_connection_t * hfp_connection){ 1242 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1243 1244 // trigger callsetup to be 1245 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1246 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1247 1248 int indicator_index ; 1249 1250 hfp_ag_set_callsetup_indicator(); 1251 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1252 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1253 1254 // put current call on hold if active 1255 if (put_call_on_hold){ 1256 log_info("AG putting current call on hold for new outgoing call"); 1257 hfp_ag_set_callheld_indicator(); 1258 indicator_index = get_ag_indicator_index_for_name("callheld"); 1259 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1260 } 1261 1262 // start audio if needed 1263 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1264 } 1265 1266 static void hfp_ag_transfer_indicator(const char * name){ 1267 int indicator_index = get_ag_indicator_index_for_name(name); 1268 if (indicator_index < 0) return; 1269 1270 btstack_linked_list_iterator_t it; 1271 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1272 while (btstack_linked_list_iterator_has_next(&it)){ 1273 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1274 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1275 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1276 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1277 hfp_ag_run_for_context(hfp_connection); 1278 } 1279 } 1280 1281 static void hfp_ag_transfer_callsetup_state(void){ 1282 hfp_ag_transfer_indicator("callsetup"); 1283 } 1284 1285 static void hfp_ag_transfer_call_state(void){ 1286 hfp_ag_transfer_indicator("call"); 1287 } 1288 1289 static void hfp_ag_transfer_callheld_state(void){ 1290 hfp_ag_transfer_indicator("callheld"); 1291 } 1292 1293 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 1294 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1295 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1296 1297 hfp_ag_stop_ringing(); 1298 1299 btstack_linked_list_iterator_t it; 1300 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1301 while (btstack_linked_list_iterator_has_next(&it)){ 1302 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1303 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1304 if ((hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) && 1305 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1306 1307 if (hfp_connection == source){ 1308 1309 if (use_in_band_tone()){ 1310 hfp_connection->call_state = HFP_CALL_ACTIVE; 1311 } else { 1312 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 1313 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1314 } 1315 1316 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1317 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1318 1319 } else { 1320 hfp_connection->call_state = HFP_CALL_IDLE; 1321 } 1322 hfp_ag_run_for_context(hfp_connection); 1323 } 1324 } 1325 1326 static void hfp_ag_ag_accept_call(void){ 1327 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1328 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1329 1330 hfp_ag_stop_ringing(); 1331 1332 btstack_linked_list_iterator_t it; 1333 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1334 while (btstack_linked_list_iterator_has_next(&it)){ 1335 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1336 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1337 if (hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) continue; 1338 1339 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1340 1341 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1342 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1343 1344 hfp_ag_run_for_context(hfp_connection); 1345 break; // only single 1346 } 1347 } 1348 1349 static void hfp_ag_trigger_reject_call(void){ 1350 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1351 1352 hfp_ag_stop_ringing(); 1353 1354 btstack_linked_list_iterator_t it; 1355 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1356 while (btstack_linked_list_iterator_has_next(&it)){ 1357 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1358 if (connection->local_role != HFP_ROLE_AG) continue; 1359 if ((connection->call_state != HFP_CALL_INCOMING_RINGING) && 1360 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1361 1362 connection->call_state = HFP_CALL_IDLE; 1363 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1364 1365 if (connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1366 connection->release_audio_connection = 1; 1367 } 1368 hfp_emit_simple_event(connection, HFP_SUBEVENT_CALL_TERMINATED); 1369 hfp_ag_run_for_context(connection); 1370 rfcomm_request_can_send_now_event(connection->rfcomm_cid); 1371 } 1372 } 1373 1374 static void hfp_ag_trigger_terminate_call(void){ 1375 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1376 1377 // no ringing during call 1378 1379 btstack_linked_list_iterator_t it; 1380 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1381 while (btstack_linked_list_iterator_has_next(&it)){ 1382 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1383 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1384 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1385 1386 hfp_connection->call_state = HFP_CALL_IDLE; 1387 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1388 1389 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1390 hfp_connection->release_audio_connection = 1; 1391 } 1392 1393 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1394 hfp_ag_run_for_context(hfp_connection); 1395 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1396 } 1397 } 1398 1399 static void hfp_ag_set_call_indicator(void){ 1400 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1401 if (!indicator){ 1402 log_error("hfp_ag_set_call_state: call indicator is missing"); 1403 return; 1404 }; 1405 indicator->status = hfp_gsm_call_status(); 1406 } 1407 1408 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1409 btstack_linked_list_iterator_t it; 1410 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1411 while (btstack_linked_list_iterator_has_next(&it)){ 1412 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1413 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1414 if (hfp_connection->call_state == call_state) return hfp_connection; 1415 } 1416 return NULL; 1417 } 1418 1419 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1420 btstack_linked_list_iterator_t it; 1421 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1422 while (btstack_linked_list_iterator_has_next(&it)){ 1423 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1424 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1425 hfp_connection->send_response_and_hold_status = state + 1; 1426 } 1427 } 1428 1429 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1430 int indicator_index; 1431 switch (hfp_connection->call_state){ 1432 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1433 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1434 1435 // we got event: audio hfp_connection established 1436 hfp_connection->call_state = HFP_CALL_INCOMING_RINGING; 1437 break; 1438 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1439 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1440 // we got event: audio hfp_connection established 1441 hfp_connection->call_state = HFP_CALL_ACTIVE; 1442 break; 1443 case HFP_CALL_W2_SEND_CALL_WAITING: 1444 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1445 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1446 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1447 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1448 break; 1449 default: 1450 break; 1451 } 1452 return 0; 1453 } 1454 1455 // functions extracted from hfp_ag_call_sm below 1456 static void hfp_ag_handle_reject_outgoing_call(void){ 1457 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1458 if (!hfp_connection){ 1459 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1460 return; 1461 } 1462 1463 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1464 hfp_connection->call_state = HFP_CALL_IDLE; 1465 hfp_connection->send_error = 1; 1466 hfp_ag_run_for_context(hfp_connection); 1467 } 1468 1469 // hfp_connection is used to identify originating HF 1470 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1471 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1472 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1473 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1474 1475 switch (event){ 1476 case HFP_AG_INCOMING_CALL: 1477 switch (hfp_gsm_call_status()){ 1478 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1479 switch (hfp_gsm_callsetup_status()){ 1480 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1481 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1482 hfp_ag_set_callsetup_indicator(); 1483 hfp_ag_trigger_incoming_call_idle(); 1484 log_info("AG rings"); 1485 break; 1486 default: 1487 break; 1488 } 1489 break; 1490 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1491 switch (hfp_gsm_callsetup_status()){ 1492 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1493 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1494 hfp_ag_set_callsetup_indicator(); 1495 hfp_ag_trigger_incoming_call_during_active_one(); 1496 log_info("AG call waiting"); 1497 break; 1498 default: 1499 break; 1500 } 1501 break; 1502 default: 1503 break; 1504 } 1505 break; 1506 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1507 switch (hfp_gsm_call_status()){ 1508 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1509 switch (hfp_gsm_callsetup_status()){ 1510 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1511 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1512 hfp_ag_set_call_indicator(); 1513 hfp_ag_set_callsetup_indicator(); 1514 hfp_ag_ag_accept_call(); 1515 log_info("AG answers call, accept call by GSM"); 1516 break; 1517 default: 1518 break; 1519 } 1520 break; 1521 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1522 switch (hfp_gsm_callsetup_status()){ 1523 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1524 log_info("AG: current call is placed on hold, incoming call gets active"); 1525 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1526 hfp_ag_set_callsetup_indicator(); 1527 hfp_ag_set_callheld_indicator(); 1528 hfp_ag_transfer_callsetup_state(); 1529 hfp_ag_transfer_callheld_state(); 1530 break; 1531 default: 1532 break; 1533 } 1534 break; 1535 default: 1536 break; 1537 } 1538 break; 1539 1540 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1541 switch (hfp_gsm_call_status()){ 1542 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1543 switch (hfp_gsm_callheld_status()){ 1544 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1545 log_info("AG: joining held call with active call"); 1546 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1547 hfp_ag_set_callheld_indicator(); 1548 hfp_ag_transfer_callheld_state(); 1549 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1550 break; 1551 default: 1552 break; 1553 } 1554 break; 1555 default: 1556 break; 1557 } 1558 break; 1559 1560 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1561 switch (hfp_gsm_call_status()){ 1562 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1563 switch (hfp_gsm_callsetup_status()){ 1564 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1565 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1566 hfp_ag_set_callsetup_indicator(); 1567 hfp_ag_set_call_indicator(); 1568 hfp_ag_hf_accept_call(hfp_connection); 1569 hfp_connection->ok_pending = 1; 1570 log_info("HF answers call, accept call by GSM"); 1571 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1572 break; 1573 default: 1574 break; 1575 } 1576 break; 1577 default: 1578 break; 1579 } 1580 break; 1581 1582 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1583 switch (hfp_gsm_call_status()){ 1584 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1585 switch (hfp_gsm_callsetup_status()){ 1586 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1587 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1588 hfp_ag_response_and_hold_active = 1; 1589 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1590 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1591 // as with regular call 1592 hfp_ag_set_call_indicator(); 1593 hfp_ag_set_callsetup_indicator(); 1594 hfp_ag_ag_accept_call(); 1595 log_info("AG response and hold - hold by AG"); 1596 break; 1597 default: 1598 break; 1599 } 1600 break; 1601 default: 1602 break; 1603 } 1604 break; 1605 1606 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1607 switch (hfp_gsm_call_status()){ 1608 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1609 switch (hfp_gsm_callsetup_status()){ 1610 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1611 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1612 hfp_ag_response_and_hold_active = 1; 1613 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1614 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1615 // as with regular call 1616 hfp_ag_set_call_indicator(); 1617 hfp_ag_set_callsetup_indicator(); 1618 hfp_ag_hf_accept_call(hfp_connection); 1619 log_info("AG response and hold - hold by HF"); 1620 break; 1621 default: 1622 break; 1623 } 1624 break; 1625 default: 1626 break; 1627 } 1628 break; 1629 1630 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1631 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1632 if (!hfp_ag_response_and_hold_active) break; 1633 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1634 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1635 hfp_ag_response_and_hold_active = 0; 1636 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1637 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1638 log_info("Held Call accepted and active"); 1639 break; 1640 1641 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1642 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1643 if (!hfp_ag_response_and_hold_active) break; 1644 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1645 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1646 hfp_ag_response_and_hold_active = 0; 1647 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1648 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1649 // from terminate by ag 1650 hfp_ag_set_call_indicator(); 1651 hfp_ag_trigger_terminate_call(); 1652 break; 1653 1654 case HFP_AG_TERMINATE_CALL_BY_HF: 1655 switch (hfp_gsm_call_status()){ 1656 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1657 switch (hfp_gsm_callsetup_status()){ 1658 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1659 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1660 hfp_ag_set_callsetup_indicator(); 1661 hfp_ag_transfer_callsetup_state(); 1662 hfp_ag_trigger_reject_call(); 1663 log_info("HF Rejected Incoming call, AG terminate call"); 1664 break; 1665 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1666 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1667 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1668 hfp_ag_set_callsetup_indicator(); 1669 hfp_ag_transfer_callsetup_state(); 1670 log_info("AG terminate outgoing call process"); 1671 break; 1672 default: 1673 break; 1674 } 1675 break; 1676 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1677 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1678 hfp_ag_set_callsetup_indicator(); 1679 hfp_ag_set_call_indicator(); 1680 hfp_ag_trigger_terminate_call(); 1681 log_info("AG terminate call"); 1682 break; 1683 default: 1684 break; 1685 } 1686 break; 1687 1688 case HFP_AG_TERMINATE_CALL_BY_AG: 1689 switch (hfp_gsm_call_status()){ 1690 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1691 switch (hfp_gsm_callsetup_status()){ 1692 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1693 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1694 hfp_ag_set_callsetup_indicator(); 1695 hfp_ag_trigger_reject_call(); 1696 log_info("AG Rejected Incoming call, AG terminate call"); 1697 break; 1698 default: 1699 break; 1700 } 1701 break; 1702 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1703 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1704 hfp_ag_set_callsetup_indicator(); 1705 hfp_ag_set_call_indicator(); 1706 hfp_ag_trigger_terminate_call(); 1707 log_info("AG terminate call"); 1708 break; 1709 default: 1710 break; 1711 } 1712 break; 1713 case HFP_AG_CALL_DROPPED: 1714 switch (hfp_gsm_call_status()){ 1715 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1716 switch (hfp_gsm_callsetup_status()){ 1717 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1718 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1719 hfp_ag_stop_ringing(); 1720 break; 1721 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1722 log_info("Outgoing call interrupted\n"); 1723 break; 1724 default: 1725 break; 1726 } 1727 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1728 hfp_ag_set_callsetup_indicator(); 1729 hfp_ag_transfer_callsetup_state(); 1730 hfp_ag_trigger_terminate_call(); 1731 break; 1732 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1733 if (hfp_ag_response_and_hold_active) { 1734 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1735 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1736 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1737 } 1738 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1739 hfp_ag_set_callsetup_indicator(); 1740 hfp_ag_set_call_indicator(); 1741 hfp_ag_trigger_terminate_call(); 1742 log_info("AG notify call dropped"); 1743 break; 1744 default: 1745 break; 1746 } 1747 break; 1748 1749 case HFP_AG_OUTGOING_CALL_INITIATED_BY_HF: 1750 // directly reject call if number of free slots is exceeded 1751 if (!hfp_gsm_call_possible()){ 1752 hfp_connection->send_error = 1; 1753 hfp_ag_run_for_context(hfp_connection); 1754 break; 1755 } 1756 1757 // note: number not used currently 1758 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1759 1760 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1761 1762 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1763 break; 1764 1765 case HFP_AG_OUTGOING_CALL_INITIATED_BY_AG: 1766 // directly reject call if number of free slots is exceeded 1767 if (!hfp_gsm_call_possible()) { 1768 // TODO: no error for user 1769 break; 1770 } 1771 switch (hfp_gsm_call_status()) { 1772 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1773 switch (hfp_gsm_callsetup_status()) { 1774 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1775 // note: number not used currently 1776 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, 0, 0, "1234567"); 1777 // init call state for all connections 1778 hfp_ag_trigger_outgoing_call(); 1779 // get first one and accept call 1780 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1781 if (hfp_connection) { 1782 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1783 } 1784 break; 1785 default: 1786 // TODO: no error for user 1787 break; 1788 } 1789 break; 1790 default: 1791 // TODO: no error for user 1792 break; 1793 } 1794 break; 1795 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1796 // directly reject call if number of free slots is exceeded 1797 if (!hfp_gsm_call_possible()){ 1798 hfp_connection->send_error = 1; 1799 hfp_ag_run_for_context(hfp_connection); 1800 break; 1801 } 1802 1803 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1804 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1805 1806 log_info("Redial last number"); 1807 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1808 1809 if (strlen(last_dialed_number) > 0){ 1810 log_info("Last number exists: accept call"); 1811 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1812 } else { 1813 log_info("log_infoLast number missing: reject call"); 1814 hfp_ag_handle_reject_outgoing_call(); 1815 } 1816 break; 1817 } 1818 case HFP_AG_OUTGOING_CALL_REJECTED: 1819 hfp_ag_handle_reject_outgoing_call(); 1820 break; 1821 1822 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1823 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1824 if (!hfp_connection){ 1825 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1826 break; 1827 } 1828 1829 hfp_connection->ok_pending = 1; 1830 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1831 break; 1832 } 1833 case HFP_AG_OUTGOING_CALL_RINGING: 1834 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1835 if (!hfp_connection){ 1836 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1837 break; 1838 } 1839 1840 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1841 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1842 hfp_ag_set_callsetup_indicator(); 1843 hfp_ag_transfer_callsetup_state(); 1844 hfp_ag_hf_start_ringing_outgoing(hfp_connection); 1845 break; 1846 1847 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1848 // get outgoing call 1849 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1850 if (!hfp_connection){ 1851 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1852 } 1853 if (!hfp_connection){ 1854 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1855 break; 1856 } 1857 1858 bool callheld_status_call_on_hold_and_no_active_calls = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1859 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1860 hfp_connection->call_state = HFP_CALL_ACTIVE; 1861 hfp_ag_set_callsetup_indicator(); 1862 hfp_ag_set_call_indicator(); 1863 hfp_ag_transfer_call_state(); 1864 hfp_ag_transfer_callsetup_state(); 1865 if (callheld_status_call_on_hold_and_no_active_calls){ 1866 hfp_ag_set_callheld_indicator(); 1867 hfp_ag_transfer_callheld_state(); 1868 } 1869 hfp_ag_hf_stop_ringing(hfp_connection); 1870 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1871 break; 1872 } 1873 1874 case HFP_AG_CALL_HOLD_USER_BUSY: 1875 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1876 hfp_ag_set_callsetup_indicator(); 1877 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1878 hfp_connection->call_state = HFP_CALL_ACTIVE; 1879 log_info("AG: Call Waiting, User Busy"); 1880 break; 1881 1882 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1883 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1884 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1885 1886 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1887 if (call_held || call_setup_in_progress){ 1888 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1889 0, NULL); 1890 1891 } 1892 1893 if (call_setup_in_progress){ 1894 log_info("AG: Call Dropped, Accept new call"); 1895 hfp_ag_set_callsetup_indicator(); 1896 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1897 } else { 1898 log_info("AG: Call Dropped, Resume held call"); 1899 } 1900 if (call_held){ 1901 hfp_ag_set_callheld_indicator(); 1902 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1903 } 1904 1905 hfp_connection->call_state = HFP_CALL_ACTIVE; 1906 break; 1907 } 1908 1909 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1910 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1911 // only update if callsetup changed 1912 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1913 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1914 NULL); 1915 1916 if (call_setup_in_progress){ 1917 log_info("AG: Call on Hold, Accept new call"); 1918 hfp_ag_set_callsetup_indicator(); 1919 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1920 } else { 1921 log_info("AG: Swap calls"); 1922 } 1923 1924 hfp_ag_set_callheld_indicator(); 1925 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1926 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1927 hfp_connection->call_state = HFP_CALL_ACTIVE; 1928 break; 1929 } 1930 1931 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1932 // Adds a held call to the conversation. 1933 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1934 log_info("AG: Join 3-way-call"); 1935 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1936 hfp_ag_set_callheld_indicator(); 1937 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1938 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1939 } 1940 hfp_connection->call_state = HFP_CALL_ACTIVE; 1941 break; 1942 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1943 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1944 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1945 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1946 hfp_ag_set_call_indicator(); 1947 hfp_ag_set_callheld_indicator(); 1948 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1949 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1950 hfp_connection->call_state = HFP_CALL_IDLE; 1951 break; 1952 1953 default: 1954 break; 1955 } 1956 1957 1958 } 1959 1960 1961 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1962 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1963 if (!active_call) return; 1964 1965 int idx = active_call->index; 1966 hfp_enhanced_call_dir_t dir = active_call->direction; 1967 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1968 hfp_enhanced_call_mode_t mode = active_call->mode; 1969 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1970 uint8_t type = active_call->clip_type; 1971 char * number = active_call->clip_number; 1972 1973 char buffer[100]; 1974 // TODO: check length of a buffer, to fit the MTU 1975 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1976 if (number){ 1977 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1978 } 1979 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1980 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, 1981 mode, mpty, type, number); 1982 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1983 } 1984 1985 // sends pending command, returns if command was sent 1986 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1987 if (hfp_connection->send_status_of_current_calls){ 1988 hfp_connection->ok_pending = 0; 1989 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1990 hfp_connection->next_call_index++; 1991 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1992 return 1; 1993 } else { 1994 // 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 1995 hfp_connection->next_call_index = 0; 1996 hfp_connection->ok_pending = 1; 1997 hfp_connection->send_status_of_current_calls = 0; 1998 } 1999 } 2000 2001 if (hfp_connection->ag_notify_incoming_call_waiting){ 2002 hfp_connection->ag_notify_incoming_call_waiting = 0; 2003 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 2004 return 1; 2005 } 2006 2007 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 2008 hfp_connection->ok_pending = 0; 2009 hfp_connection->send_error = 0; 2010 hfp_connection->command = HFP_CMD_NONE; 2011 hfp_ag_send_error(hfp_connection->rfcomm_cid); 2012 return 1; 2013 } 2014 2015 if (hfp_connection->send_error){ 2016 hfp_connection->send_error = 0; 2017 hfp_connection->command = HFP_CMD_NONE; 2018 hfp_ag_send_error(hfp_connection->rfcomm_cid); 2019 return 1; 2020 } 2021 2022 // note: before update AG indicators and ok_pending 2023 if (hfp_connection->send_response_and_hold_status){ 2024 int status = hfp_connection->send_response_and_hold_status - 1; 2025 hfp_connection->send_response_and_hold_status = 0; 2026 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 2027 return 1; 2028 } 2029 2030 if (hfp_connection->ok_pending){ 2031 hfp_connection->ok_pending = 0; 2032 hfp_connection->command = HFP_CMD_NONE; 2033 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2034 return 1; 2035 } 2036 2037 // update AG indicators 2038 if (hfp_connection->ag_indicators_status_update_bitmap){ 2039 int i; 2040 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 2041 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 2042 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 2043 if (!hfp_connection->enable_status_update_for_ag_indicators) { 2044 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 2045 break; 2046 } 2047 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 2048 return 1; 2049 } 2050 } 2051 } 2052 2053 if (hfp_connection->ag_send_no_carrier){ 2054 hfp_connection->ag_send_no_carrier = false; 2055 hfp_ag_send_no_carrier(hfp_connection->rfcomm_cid); 2056 return 1; 2057 } 2058 2059 if (hfp_connection->ag_ring){ 2060 hfp_connection->ag_ring = 0; 2061 hfp_connection->command = HFP_CMD_NONE; 2062 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 2063 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 2064 return 1; 2065 } 2066 2067 if (hfp_connection->ag_send_clip){ 2068 hfp_connection->ag_send_clip = 0; 2069 hfp_connection->command = HFP_CMD_NONE; 2070 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 2071 return 1; 2072 } 2073 2074 if (hfp_connection->send_phone_number_for_voice_tag){ 2075 hfp_connection->send_phone_number_for_voice_tag = 0; 2076 hfp_connection->command = HFP_CMD_NONE; 2077 hfp_connection->ok_pending = 1; 2078 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 2079 return 1; 2080 } 2081 2082 if (hfp_connection->send_subscriber_number){ 2083 if (hfp_connection->next_subscriber_number_to_send < hfp_ag_subscriber_numbers_count){ 2084 hfp_phone_number_t phone = hfp_ag_subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 2085 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 2086 } else { 2087 hfp_connection->send_subscriber_number = 0; 2088 hfp_connection->next_subscriber_number_to_send = 0; 2089 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2090 } 2091 hfp_connection->command = HFP_CMD_NONE; 2092 return 1; 2093 } 2094 2095 if (hfp_connection->send_microphone_gain){ 2096 hfp_connection->send_microphone_gain = 0; 2097 hfp_connection->command = HFP_CMD_NONE; 2098 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 2099 return 1; 2100 } 2101 2102 if (hfp_connection->send_speaker_gain){ 2103 hfp_connection->send_speaker_gain = 0; 2104 hfp_connection->command = HFP_CMD_NONE; 2105 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 2106 return 1; 2107 } 2108 2109 if (hfp_connection->send_ag_status_indicators){ 2110 hfp_connection->send_ag_status_indicators = 0; 2111 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 2112 return 1; 2113 } 2114 2115 return 0; 2116 } 2117 2118 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 2119 2120 btstack_assert(hfp_connection != NULL); 2121 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 2122 2123 // during SDP query, RFCOMM CID is not set 2124 if (hfp_connection->rfcomm_cid == 0) return; 2125 2126 // assert command could be sent 2127 if (hci_can_send_command_packet_now() == 0) return; 2128 2129 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 2130 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 2131 hfp_connection->release_audio_connection = 0; 2132 gap_disconnect(hfp_connection->sco_handle); 2133 return; 2134 } 2135 2136 #ifdef ENABLE_CC256X_ASSISTED_HFP 2137 // WBS Disassociate 2138 if (hfp_connection->cc256x_send_wbs_disassociate){ 2139 hfp_connection->cc256x_send_wbs_disassociate = false; 2140 hci_send_cmd(&hci_ti_wbs_disassociate); 2141 return; 2142 } 2143 // Write Codec Config 2144 if (hfp_connection->cc256x_send_write_codec_config){ 2145 hfp_connection->cc256x_send_write_codec_config = false; 2146 hfp_cc256x_write_codec_config(hfp_connection); 2147 return; 2148 } 2149 // WBS Associate 2150 if (hfp_connection->cc256x_send_wbs_associate){ 2151 hfp_connection->cc256x_send_wbs_associate = false; 2152 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 2153 return; 2154 } 2155 #endif 2156 #ifdef ENABLE_BCM_PCM_WBS 2157 // Enable WBS 2158 if (hfp_connection->bcm_send_enable_wbs){ 2159 hfp_connection->bcm_send_enable_wbs = false; 2160 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 2161 return; 2162 } 2163 // Write I2S/PCM params 2164 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 2165 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 2166 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 2167 return; 2168 } 2169 // Disable WBS 2170 if (hfp_connection->bcm_send_disable_wbs){ 2171 hfp_connection->bcm_send_disable_wbs = false; 2172 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 2173 return; 2174 } 2175 #endif 2176 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 2177 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 2178 hfp_finalize_connection_context(hfp_connection); 2179 return; 2180 } 2181 #endif 2182 2183 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 2184 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 2185 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2186 return; 2187 } 2188 2189 int cmd_sent = hfp_ag_send_commands(hfp_connection); 2190 2191 if (!cmd_sent){ 2192 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 2193 } 2194 2195 if (!cmd_sent){ 2196 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 2197 } 2198 2199 if (!cmd_sent){ 2200 cmd_sent = call_setup_state_machine(hfp_connection); 2201 } 2202 2203 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 2204 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 2205 switch (hfp_connection->codecs_state){ 2206 case HFP_CODECS_IDLE: 2207 case HFP_CODECS_RECEIVED_LIST: 2208 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2209 case HFP_CODECS_ERROR: 2210 hfp_connection->trigger_codec_exchange = 0; 2211 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2212 break; 2213 default: 2214 break; 2215 } 2216 } 2217 2218 if (!cmd_sent){ 2219 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 2220 } 2221 2222 if (!cmd_sent){ 2223 cmd_sent = hfp_ag_voice_recognition_state_machine(hfp_connection); 2224 } 2225 2226 // disconnect 2227 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 2228 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 2229 rfcomm_disconnect(hfp_connection->rfcomm_cid); 2230 } 2231 2232 if (cmd_sent){ 2233 hfp_connection->command = HFP_CMD_NONE; 2234 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2235 } 2236 } 2237 2238 static int hfp_parser_is_end_of_line(uint8_t byte){ 2239 return (byte == '\n') || (byte == '\r'); 2240 } 2241 2242 static void hfp_ag_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 2243 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 2244 if (size < 1) return; 2245 uint8_t status = ERROR_CODE_SUCCESS; 2246 2247 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 2248 #ifdef ENABLE_HFP_AT_MESSAGES 2249 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 2250 #endif 2251 2252 // process messages byte-wise 2253 int pos; 2254 for (pos = 0; pos < size ; pos++){ 2255 hfp_parse(hfp_connection, packet[pos], 0); 2256 2257 // parse until end of line 2258 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 2259 2260 hfp_generic_status_indicator_t * indicator; 2261 switch(hfp_connection->command){ 2262 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 2263 // dealt with in hfp_ag_voice_recognition_state_machine 2264 break; 2265 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 2266 if (hfp_ag_response_and_hold_active){ 2267 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 2268 } 2269 hfp_connection->ok_pending = 1; 2270 break; 2271 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 2272 switch(hfp_connection->ag_response_and_hold_action){ 2273 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 2274 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 2275 break; 2276 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 2277 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 2278 break; 2279 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 2280 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 2281 break; 2282 default: 2283 break; 2284 } 2285 hfp_connection->ok_pending = 1; 2286 break; 2287 case HFP_CMD_HF_INDICATOR_STATUS: 2288 hfp_connection->command = HFP_CMD_NONE; 2289 2290 if (hfp_connection->parser_indicator_index < hfp_ag_generic_status_indicators_nr){ 2291 indicator = &hfp_ag_generic_status_indicators[hfp_connection->parser_indicator_index]; 2292 switch (indicator->uuid){ 2293 case HFP_HF_INDICATOR_UUID_ENHANCED_SAFETY: 2294 if (hfp_connection->parser_indicator_value > 1) { 2295 hfp_connection->send_error = 1; 2296 break; 2297 } 2298 hfp_connection->ok_pending = 1; 2299 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2300 break; 2301 case HFP_HF_INDICATOR_UUID_BATTERY_LEVEL: 2302 if (hfp_connection->parser_indicator_value > 100){ 2303 hfp_connection->send_error = 1; 2304 break; 2305 } 2306 hfp_connection->ok_pending = 1; 2307 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2308 break; 2309 default: 2310 hfp_connection->send_error = 1; 2311 break; 2312 } 2313 } else { 2314 hfp_connection->send_error = 1; 2315 } 2316 break; 2317 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 2318 // expected by SLC state machine 2319 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 2320 hfp_connection->send_ag_indicators_segment = 0; 2321 hfp_connection->send_ag_status_indicators = 1; 2322 break; 2323 case HFP_CMD_LIST_CURRENT_CALLS: 2324 hfp_connection->command = HFP_CMD_NONE; 2325 hfp_connection->next_call_index = 0; 2326 hfp_connection->send_status_of_current_calls = 1; 2327 break; 2328 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 2329 if (hfp_ag_subscriber_numbers_count == 0){ 2330 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2331 break; 2332 } 2333 hfp_connection->next_subscriber_number_to_send = 0; 2334 hfp_connection->send_subscriber_number = 1; 2335 break; 2336 case HFP_CMD_TRANSMIT_DTMF_CODES: 2337 { 2338 hfp_connection->command = HFP_CMD_NONE; 2339 char buffer[2]; 2340 buffer[0] = (char) hfp_connection->ag_dtmf_code; 2341 buffer[1] = 0; 2342 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 2343 break; 2344 } 2345 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 2346 hfp_connection->command = HFP_CMD_NONE; 2347 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 2348 break; 2349 case HFP_CMD_TURN_OFF_EC_AND_NR: 2350 hfp_connection->command = HFP_CMD_NONE; 2351 2352 if (get_bit(hfp_ag_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 2353 hfp_connection->ok_pending = 1; 2354 hfp_ag_supported_features = store_bit(hfp_ag_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 2355 status = ERROR_CODE_SUCCESS; 2356 } else { 2357 hfp_connection->send_error = 1; 2358 status = ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2359 } 2360 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 2361 break; 2362 case HFP_CMD_CALL_ANSWERED: 2363 hfp_connection->command = HFP_CMD_NONE; 2364 log_info("HFP: ATA"); 2365 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 2366 break; 2367 case HFP_CMD_HANG_UP_CALL: 2368 hfp_connection->command = HFP_CMD_NONE; 2369 hfp_connection->ok_pending = 1; 2370 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 2371 break; 2372 case HFP_CMD_CALL_HOLD: { 2373 hfp_connection->command = HFP_CMD_NONE; 2374 hfp_connection->ok_pending = 1; 2375 2376 switch (hfp_connection->ag_call_hold_action){ 2377 case 0: 2378 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2379 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2380 break; 2381 case 1: 2382 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2383 // Where both a held and a waiting call exist, the above procedures shall apply to the 2384 // waiting call (i.e., not to the held call) in conflicting situation. 2385 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2386 break; 2387 case 2: 2388 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2389 // Where both a held and a waiting call exist, the above procedures shall apply to the 2390 // waiting call (i.e., not to the held call) in conflicting situation. 2391 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2392 break; 2393 case 3: 2394 // Adds a held call to the conversation. 2395 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2396 break; 2397 case 4: 2398 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2399 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2400 break; 2401 default: 2402 break; 2403 } 2404 hfp_connection->call_index = 0; 2405 break; 2406 } 2407 case HFP_CMD_CALL_PHONE_NUMBER: 2408 hfp_connection->command = HFP_CMD_NONE; 2409 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, hfp_connection); 2410 break; 2411 case HFP_CMD_REDIAL_LAST_NUMBER: 2412 hfp_connection->command = HFP_CMD_NONE; 2413 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2414 break; 2415 case HFP_CMD_ENABLE_CLIP: 2416 hfp_connection->command = HFP_CMD_NONE; 2417 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2418 hfp_connection->ok_pending = 1; 2419 break; 2420 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2421 hfp_connection->command = HFP_CMD_NONE; 2422 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2423 hfp_connection->ok_pending = 1; 2424 break; 2425 case HFP_CMD_SET_SPEAKER_GAIN: 2426 hfp_connection->command = HFP_CMD_NONE; 2427 hfp_connection->ok_pending = 1; 2428 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2429 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2430 break; 2431 case HFP_CMD_SET_MICROPHONE_GAIN: 2432 hfp_connection->command = HFP_CMD_NONE; 2433 hfp_connection->ok_pending = 1; 2434 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2435 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2436 break; 2437 default: 2438 break; 2439 } 2440 } 2441 } 2442 2443 static void hfp_ag_run(void){ 2444 btstack_linked_list_iterator_t it; 2445 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2446 while (btstack_linked_list_iterator_has_next(&it)){ 2447 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2448 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2449 hfp_ag_run_for_context(hfp_connection); 2450 } 2451 } 2452 2453 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2454 hfp_connection_t * hfp_connection = NULL; 2455 switch (packet_type){ 2456 case RFCOMM_DATA_PACKET: 2457 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 2458 btstack_assert(hfp_connection != NULL); 2459 2460 hfp_ag_handle_rfcomm_data(hfp_connection, packet, size); 2461 hfp_ag_run_for_context(hfp_connection); 2462 return; 2463 case HCI_EVENT_PACKET: 2464 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2465 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2466 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid); 2467 btstack_assert(hfp_connection != NULL); 2468 2469 hfp_ag_run_for_context(hfp_connection); 2470 return; 2471 } 2472 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2473 break; 2474 default: 2475 break; 2476 } 2477 2478 hfp_ag_run(); 2479 } 2480 2481 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2482 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2483 hfp_ag_run(); 2484 } 2485 2486 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2487 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2488 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2489 return; 2490 } 2491 int i; 2492 hfp_ag_codecs_nr = codecs_nr; 2493 for (i=0; i < codecs_nr; i++){ 2494 hfp_ag_codecs[i] = codecs[i]; 2495 } 2496 } 2497 2498 void hfp_ag_init_supported_features(uint32_t supported_features){ 2499 hfp_ag_supported_features = supported_features; 2500 } 2501 2502 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2503 hfp_ag_indicators_nr = ag_indicators_nr; 2504 (void)memcpy(hfp_ag_indicators, ag_indicators, 2505 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2506 } 2507 2508 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2509 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2510 hfp_ag_generic_status_indicators_nr = hf_indicators_nr; 2511 (void)memcpy(hfp_ag_generic_status_indicators, hf_indicators, 2512 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2513 } 2514 2515 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2516 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2517 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2518 call_hold_services_nr * sizeof(char *)); 2519 } 2520 2521 2522 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2523 2524 hfp_init(); 2525 hfp_ag_call_hold_services_nr = 0; 2526 hfp_ag_response_and_hold_active = 0; 2527 hfp_ag_indicators_nr = 0; 2528 hfp_ag_codecs_nr = 0; 2529 hfp_ag_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2530 hfp_ag_subscriber_numbers = NULL; 2531 hfp_ag_subscriber_numbers_count = 0; 2532 2533 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2534 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2535 2536 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2537 2538 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2539 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2540 2541 hfp_gsm_init(); 2542 } 2543 2544 void hfp_ag_deinit(void){ 2545 hfp_deinit(); 2546 hfp_gsm_deinit(); 2547 2548 hfp_ag_callback = NULL; 2549 hfp_ag_supported_features = 0; 2550 hfp_ag_codecs_nr = 0; 2551 hfp_ag_indicators_nr = 0; 2552 hfp_ag_call_hold_services_nr = 0; 2553 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2554 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 2555 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2556 hfp_ag_subscriber_numbers = NULL; 2557 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2558 } 2559 2560 uint8_t hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2561 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2562 } 2563 2564 uint8_t hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2565 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2566 if (!hfp_connection){ 2567 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2568 } 2569 2570 hfp_trigger_release_service_level_connection(hfp_connection); 2571 hfp_ag_run_for_context(hfp_connection); 2572 return ERROR_CODE_SUCCESS; 2573 } 2574 2575 uint8_t hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2576 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2577 if (!hfp_connection){ 2578 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2579 } 2580 2581 hfp_connection->extended_audio_gateway_error = 0; 2582 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2583 return ERROR_CODE_COMMAND_DISALLOWED; 2584 } 2585 2586 hfp_connection->extended_audio_gateway_error = error; 2587 hfp_ag_run_for_context(hfp_connection); 2588 return ERROR_CODE_SUCCESS; 2589 } 2590 2591 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2592 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 2593 return ERROR_CODE_COMMAND_DISALLOWED; 2594 } 2595 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 2596 return ERROR_CODE_COMMAND_DISALLOWED; 2597 } 2598 2599 hfp_connection->establish_audio_connection = 1; 2600 if (!has_codec_negotiation_feature(hfp_connection)){ 2601 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2602 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2603 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2604 // now, pick link settings 2605 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2606 #ifdef ENABLE_CC256X_ASSISTED_HFP 2607 hfp_cc256x_prepare_for_sco(hfp_connection); 2608 #endif 2609 return ERROR_CODE_SUCCESS; 2610 } 2611 2612 uint8_t i; 2613 bool codec_was_in_use = false; 2614 bool better_codec_can_be_used = false; 2615 2616 for (i = 0; i<hfp_connection->remote_codecs_nr; i++){ 2617 if (hfp_connection->negotiated_codec == hfp_connection->remote_codecs[i]){ 2618 codec_was_in_use = true; 2619 } else if (hfp_connection->negotiated_codec < hfp_connection->remote_codecs[i]){ 2620 better_codec_can_be_used = true; 2621 } 2622 } 2623 2624 if (!codec_was_in_use || better_codec_can_be_used){ 2625 hfp_connection->trigger_codec_exchange = 1; 2626 hfp_connection->codecs_state = HFP_CODECS_IDLE; 2627 } 2628 return ERROR_CODE_SUCCESS; 2629 } 2630 2631 uint8_t hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2632 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2633 if (!hfp_connection){ 2634 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2635 } 2636 uint8_t status = hfp_ag_setup_audio_connection(hfp_connection); 2637 if (status != ERROR_CODE_SUCCESS){ 2638 return status; 2639 } 2640 hfp_ag_run_for_context(hfp_connection); 2641 return ERROR_CODE_SUCCESS; 2642 } 2643 2644 uint8_t hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2645 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2646 if (!hfp_connection){ 2647 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2648 } 2649 2650 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 2651 return ERROR_CODE_COMMAND_DISALLOWED; 2652 } 2653 2654 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 2655 if (status == ERROR_CODE_SUCCESS){ 2656 hfp_ag_run_for_context(hfp_connection); 2657 } 2658 return status; 2659 } 2660 2661 /** 2662 * @brief Enable in-band ring tone 2663 */ 2664 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2665 if (get_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2666 return; 2667 } 2668 2669 hfp_ag_supported_features = store_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2670 2671 btstack_linked_list_iterator_t it; 2672 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2673 while (btstack_linked_list_iterator_has_next(&it)){ 2674 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2675 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2676 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2677 hfp_ag_run_for_context(hfp_connection); 2678 } 2679 } 2680 2681 /** 2682 * @brief Called from GSM 2683 */ 2684 void hfp_ag_incoming_call(void){ 2685 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2686 } 2687 2688 void hfp_ag_outgoing_call_initiated(const char * number) { 2689 UNUSED(number); 2690 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, NULL); 2691 } 2692 2693 /** 2694 * @brief number is stored. 2695 */ 2696 void hfp_ag_set_clip(uint8_t type, const char * number){ 2697 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2698 } 2699 2700 void hfp_ag_call_dropped(void){ 2701 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2702 } 2703 2704 // call from AG UI 2705 void hfp_ag_answer_incoming_call(void){ 2706 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2707 } 2708 2709 void hfp_ag_join_held_call(void){ 2710 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2711 } 2712 2713 void hfp_ag_terminate_call(void){ 2714 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2715 } 2716 2717 void hfp_ag_outgoing_call_ringing(void){ 2718 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2719 } 2720 2721 void hfp_ag_outgoing_call_established(void){ 2722 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2723 } 2724 2725 void hfp_ag_outgoing_call_rejected(void){ 2726 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2727 } 2728 2729 void hfp_ag_outgoing_call_accepted(void){ 2730 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2731 } 2732 2733 void hfp_ag_hold_incoming_call(void){ 2734 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2735 } 2736 2737 void hfp_ag_accept_held_incoming_call(void) { 2738 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2739 } 2740 2741 void hfp_ag_reject_held_incoming_call(void){ 2742 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2743 } 2744 2745 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2746 int indicator_index = get_ag_indicator_index_for_name(name); 2747 if (indicator_index < 0) return; 2748 hfp_ag_indicators[indicator_index].status = value; 2749 2750 btstack_linked_list_iterator_t it; 2751 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2752 while (btstack_linked_list_iterator_has_next(&it)){ 2753 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2754 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2755 if (!hfp_connection->ag_indicators[indicator_index].enabled) { 2756 log_info("Requested AG indicator '%s' update to %u, but it is not enabled", hfp_ag_indicators[indicator_index].name, value); 2757 continue; 2758 } 2759 log_info("AG indicator '%s' changed to %u, request transfer status", hfp_ag_indicators[indicator_index].name, value); 2760 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2761 hfp_ag_run_for_context(hfp_connection); 2762 } 2763 } 2764 2765 uint8_t hfp_ag_set_registration_status(int registration_status){ 2766 if ((registration_status < 0) || (registration_status > 1)){ 2767 return ERROR_CODE_COMMAND_DISALLOWED; 2768 } 2769 2770 if ( (registration_status == 0) && (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 2771 2772 // if network goes away wihle a call is active: 2773 // - the call gets dropped 2774 // - we send NO CARRIER 2775 // NOTE: the CALL=0 has to be sent before NO CARRIER 2776 2777 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2778 2779 btstack_linked_list_iterator_t it; 2780 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2781 while (btstack_linked_list_iterator_has_next(&it)){ 2782 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2783 hfp_connection->ag_send_no_carrier = true; 2784 } 2785 } 2786 hfp_ag_set_ag_indicator("service", registration_status); 2787 return ERROR_CODE_SUCCESS; 2788 } 2789 2790 uint8_t hfp_ag_set_signal_strength(int signal_strength){ 2791 if ((signal_strength < 0) || (signal_strength > 5)){ 2792 return ERROR_CODE_COMMAND_DISALLOWED; 2793 } 2794 2795 hfp_ag_set_ag_indicator("signal", signal_strength); 2796 return ERROR_CODE_SUCCESS; 2797 } 2798 2799 uint8_t hfp_ag_set_roaming_status(int roaming_status){ 2800 if ((roaming_status < 0) || (roaming_status > 1)){ 2801 return ERROR_CODE_COMMAND_DISALLOWED; 2802 } 2803 2804 hfp_ag_set_ag_indicator("roam", roaming_status); 2805 return ERROR_CODE_SUCCESS; 2806 } 2807 2808 uint8_t hfp_ag_set_battery_level(int battery_level){ 2809 if ((battery_level < 0) || (battery_level > 5)){ 2810 return ERROR_CODE_COMMAND_DISALLOWED; 2811 } 2812 hfp_ag_set_ag_indicator("battchg", battery_level); 2813 return ERROR_CODE_SUCCESS; 2814 } 2815 2816 static uint8_t activate_voice_recognition(hci_con_handle_t acl_handle, bool enhanced){ 2817 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2818 if (!hfp_connection){ 2819 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2820 } 2821 2822 uint8_t status = hfp_ag_can_activate_voice_recognition(hfp_connection, enhanced); 2823 if (status == ERROR_CODE_SUCCESS){ 2824 hfp_connection->ag_activate_voice_recognition_value = 1; 2825 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 2826 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2827 hfp_connection->enhanced_voice_recognition_enabled = enhanced; 2828 hfp_connection->ag_audio_connection_opened_before_vra = hfp_ag_is_audio_connection_active(hfp_connection); 2829 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2830 hfp_ag_run_for_context(hfp_connection); 2831 } 2832 return status; 2833 } 2834 2835 static uint8_t deactivate_voice_recognition(hci_con_handle_t acl_handle, bool enhanced){ 2836 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2837 if (!hfp_connection){ 2838 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2839 } 2840 uint8_t status = hfp_ag_voice_recognition_session_active(hfp_connection, enhanced); 2841 if (status == ERROR_CODE_SUCCESS){ 2842 hfp_connection->ag_activate_voice_recognition_value = 0; 2843 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2844 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2845 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2846 hfp_ag_run_for_context(hfp_connection); 2847 } 2848 return status; 2849 } 2850 2851 uint8_t hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle){ 2852 return activate_voice_recognition(acl_handle, false); 2853 } 2854 2855 uint8_t hfp_ag_activate_enhanced_voice_recognition(hci_con_handle_t acl_handle){ 2856 return activate_voice_recognition(acl_handle, true); 2857 } 2858 2859 uint8_t hfp_ag_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2860 return deactivate_voice_recognition(acl_handle, false); 2861 } 2862 2863 uint8_t hfp_ag_deactivate_enhanced_voice_recognition(hci_con_handle_t acl_handle){ 2864 return deactivate_voice_recognition(acl_handle, true); 2865 } 2866 2867 static uint8_t hfp_ag_enhanced_voice_recognition_send_state(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state){ 2868 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2869 if (!hfp_connection){ 2870 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2871 } 2872 2873 uint8_t status = hfp_ag_voice_recognition_session_active(hfp_connection, true); 2874 if (status == ERROR_CODE_SUCCESS){ 2875 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2876 hfp_connection->ag_vra_state = state; 2877 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_STATUS; 2878 hfp_ag_run_for_context(hfp_connection); 2879 } 2880 return status; 2881 } 2882 2883 uint8_t hfp_ag_enhanced_voice_recognition_report_sending_audio(hci_con_handle_t acl_handle){ 2884 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_STARTING_SOUND); 2885 } 2886 uint8_t hfp_ag_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 2887 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_READY_TO_ACCEPT_AUDIO_INPUT); 2888 } 2889 uint8_t hfp_ag_enhanced_voice_recognition_report_processing_input(hci_con_handle_t acl_handle){ 2890 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_PROCESSING_AUDIO_INPUT); 2891 } 2892 2893 2894 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){ 2895 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2896 if (!hfp_connection){ 2897 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2898 } 2899 2900 uint8_t status = hfp_ag_can_send_enahnced_voice_recognition_message(hfp_connection, true); 2901 if (status == ERROR_CODE_SUCCESS){ 2902 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2903 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_MSG; 2904 hfp_connection->ag_msg = msg; 2905 hfp_connection->ag_vra_state = state; 2906 hfp_ag_run_for_context(hfp_connection); 2907 } 2908 return status; 2909 } 2910 2911 2912 uint8_t hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2913 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2914 if (!hfp_connection){ 2915 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2916 } 2917 2918 if ((gain < 0) || (gain > 15)){ 2919 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2920 return ERROR_CODE_COMMAND_DISALLOWED; 2921 } 2922 2923 if (hfp_connection->microphone_gain != gain){ 2924 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2925 hfp_connection->microphone_gain = gain; 2926 hfp_connection->send_microphone_gain = 1; 2927 } 2928 hfp_ag_run_for_context(hfp_connection); 2929 return ERROR_CODE_SUCCESS; 2930 } 2931 2932 uint8_t hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2933 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2934 if (!hfp_connection){ 2935 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2936 } 2937 2938 if ((gain < 0) || (gain > 15)){ 2939 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2940 return ERROR_CODE_COMMAND_DISALLOWED; 2941 } 2942 2943 if (hfp_connection->speaker_gain != gain){ 2944 hfp_connection->speaker_gain = gain; 2945 hfp_connection->send_speaker_gain = 1; 2946 } 2947 hfp_ag_run_for_context(hfp_connection); 2948 return ERROR_CODE_SUCCESS; 2949 } 2950 2951 uint8_t hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2952 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2953 if (!hfp_connection){ 2954 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2955 } 2956 2957 hfp_ag_set_clip(0, number); 2958 hfp_connection->send_phone_number_for_voice_tag = 1; 2959 return ERROR_CODE_SUCCESS; 2960 } 2961 2962 uint8_t hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2963 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2964 if (!hfp_connection){ 2965 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2966 } 2967 2968 hfp_connection->send_error = 1; 2969 return ERROR_CODE_SUCCESS; 2970 } 2971 2972 uint8_t hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2973 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2974 if (!hfp_connection){ 2975 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2976 } 2977 2978 hfp_connection->ok_pending = 1; 2979 return ERROR_CODE_SUCCESS; 2980 } 2981 2982 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2983 hfp_ag_subscriber_numbers = numbers; 2984 hfp_ag_subscriber_numbers_count = numbers_count; 2985 } 2986 2987 void hfp_ag_clear_last_dialed_number(void){ 2988 hfp_gsm_clear_last_dialed_number(); 2989 } 2990 2991 void hfp_ag_set_last_dialed_number(const char * number){ 2992 hfp_gsm_set_last_dialed_number(number); 2993 } 2994 2995 uint8_t hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2996 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2997 if (!hfp_connection){ 2998 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2999 } 3000 3001 if (!hfp_connection->call_waiting_notification_enabled){ 3002 return ERROR_CODE_COMMAND_DISALLOWED; 3003 } 3004 3005 hfp_connection->ag_notify_incoming_call_waiting = 1; 3006 hfp_ag_run_for_context(hfp_connection); 3007 return ERROR_CODE_SUCCESS; 3008 } 3009 3010 void hfp_ag_create_sdp_record(uint8_t * service, uint32_t service_record_handle, int rfcomm_channel_nr, const char * name, uint8_t ability_to_reject_call, uint16_t supported_features, int wide_band_speech){ 3011 if (!name){ 3012 name = hfp_ag_default_service_name; 3013 } 3014 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 3015 3016 /* 3017 * 0x01 – Ability to reject a call 3018 * 0x00 – No ability to reject a call 3019 */ 3020 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 3021 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 3022 3023 // Construct SupportedFeatures for SDP bitmap: 3024 // 3025 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 3026 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 3027 // 3028 // Wide band speech (bit 5) requires Codec negotiation 3029 // 3030 uint16_t sdp_features = supported_features & 0x1f; 3031 if ( (wide_band_speech == 1) && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 3032 sdp_features |= 1 << 5; 3033 } 3034 3035 if (supported_features & (1 << HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 3036 sdp_features |= 1 << 6; 3037 } 3038 3039 if (supported_features & (1 << HFP_AGSF_VOICE_RECOGNITION_TEXT)){ 3040 sdp_features |= 1 << 7; 3041 } 3042 3043 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 3044 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 3045 } 3046 3047 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 3048 btstack_assert(callback != NULL); 3049 3050 hfp_ag_callback = callback; 3051 hfp_set_ag_callback(callback); 3052 } 3053