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 // ***************************************************************************** 39 // 40 // HFP Audio Gateway (AG) unit 41 // 42 // ***************************************************************************** 43 44 #include "btstack_config.h" 45 46 #include <stdint.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 51 #include "hci_cmd.h" 52 #include "btstack_run_loop.h" 53 54 #include "hci.h" 55 #include "btstack_memory.h" 56 #include "hci_dump.h" 57 #include "l2cap.h" 58 #include "classic/sdp_query_rfcomm.h" 59 #include "classic/sdp_server.h" 60 #include "btstack_debug.h" 61 #include "classic/hfp.h" 62 #include "classic/hfp_gsm_model.h" 63 #include "classic/hfp_ag.h" 64 65 // private prototypes 66 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 67 static void hfp_run_for_context(hfp_connection_t *context); 68 static void hfp_ag_setup_audio_connection(hfp_connection_t * connection); 69 static void hfp_ag_hf_start_ringing(hfp_connection_t * context); 70 71 // public prototypes 72 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(); 73 int get_hfp_generic_status_indicators_nr(); 74 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 75 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 76 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 77 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 78 79 // gobals 80 static const char default_hfp_ag_service_name[] = "Voice gateway"; 81 82 static uint16_t hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 83 84 static uint8_t hfp_codecs_nr = 0; 85 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 86 87 static int hfp_ag_indicators_nr = 0; 88 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_AG_INDICATORS]; 89 90 static int hfp_ag_call_hold_services_nr = 0; 91 static char *hfp_ag_call_hold_services[6]; 92 static hfp_callback_t hfp_callback; 93 94 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 95 static int hfp_ag_response_and_hold_active = 0; 96 97 // Subcriber information entries 98 static hfp_phone_number_t * subscriber_numbers = NULL; 99 static int subscriber_numbers_count = 0; 100 101 static btstack_packet_callback_registration_t hci_event_callback_registration; 102 103 104 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context){ 105 // TODO: save only value, and value changed in the context? 106 if (context->ag_indicators_nr != hfp_ag_indicators_nr){ 107 context->ag_indicators_nr = hfp_ag_indicators_nr; 108 memcpy(context->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 109 } 110 return (hfp_ag_indicator_t *)&(context->ag_indicators); 111 } 112 113 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 114 int i; 115 for (i = 0; i < hfp_ag_indicators_nr; i++){ 116 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 117 return &hfp_ag_indicators[i]; 118 } 119 } 120 return NULL; 121 } 122 123 static int get_ag_indicator_index_for_name(const char * name){ 124 int i; 125 for (i = 0; i < hfp_ag_indicators_nr; i++){ 126 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 127 return i; 128 } 129 } 130 return -1; 131 } 132 133 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr){ 134 memcpy(hfp_ag_indicators, indicators, indicator_nr * sizeof(hfp_ag_indicator_t)); 135 hfp_ag_indicators_nr = indicator_nr; 136 } 137 138 int get_hfp_ag_indicators_nr(hfp_connection_t * context){ 139 if (context->ag_indicators_nr != hfp_ag_indicators_nr){ 140 context->ag_indicators_nr = hfp_ag_indicators_nr; 141 memcpy(context->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 142 } 143 return context->ag_indicators_nr; 144 } 145 146 147 void hfp_ag_register_packet_handler(hfp_callback_t callback){ 148 if (callback == NULL){ 149 log_error("hfp_ag_register_packet_handler called with NULL callback"); 150 return; 151 } 152 hfp_callback = callback; 153 hfp_set_callback(callback); 154 } 155 156 static int use_in_band_tone(){ 157 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 158 } 159 160 static int has_codec_negotiation_feature(hfp_connection_t * connection){ 161 int hf = get_bit(connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 162 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 163 return hf && ag; 164 } 165 166 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * connection){ 167 int hf = get_bit(connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 168 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 169 return hf && ag; 170 } 171 172 static int has_hf_indicators_feature(hfp_connection_t * connection){ 173 int hf = get_bit(connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 174 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 175 return hf && ag; 176 } 177 178 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){ 179 if (!name){ 180 name = default_hfp_ag_service_name; 181 } 182 hfp_create_sdp_record(service, service_record_handle, SDP_HandsfreeAudioGateway, rfcomm_channel_nr, name); 183 184 /* 185 * 0x01 – Ability to reject a call 186 * 0x00 – No ability to reject a call 187 */ 188 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 189 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 190 191 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 192 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 193 } 194 195 static int hfp_ag_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 196 char buffer[20]; 197 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 198 return send_str_over_rfcomm(cid, buffer); 199 } 200 201 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 202 char buffer[40]; 203 sprintf(buffer, "\r\n%s:%d\r\n\r\nOK\r\n", HFP_SUPPORTED_FEATURES, hfp_supported_features); 204 return send_str_over_rfcomm(cid, buffer); 205 } 206 207 static int hfp_ag_ok(uint16_t cid){ 208 char buffer[10]; 209 sprintf(buffer, "\r\nOK\r\n"); 210 return send_str_over_rfcomm(cid, buffer); 211 } 212 213 static int hfp_ag_ring(uint16_t cid){ 214 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 215 } 216 217 static int hfp_ag_send_clip(uint16_t cid){ 218 char buffer[50]; 219 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 220 return send_str_over_rfcomm(cid, buffer); 221 } 222 223 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 224 char buffer[50]; 225 sprintf(buffer, "\r\n%s: ,\"%s\",%u, , \r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 226 return send_str_over_rfcomm(cid, buffer); 227 } 228 229 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 230 char buffer[50]; 231 sprintf(buffer, "\r\n%s: %s\r\n", HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 232 return send_str_over_rfcomm(cid, buffer); 233 } 234 235 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 236 char buffer[50]; 237 sprintf(buffer, "\r\n+CCWA: \"%s\",%u\r\n", hfp_gsm_clip_number(), hfp_gsm_clip_type()); 238 return send_str_over_rfcomm(cid, buffer); 239 } 240 241 static int hfp_ag_error(uint16_t cid){ 242 char buffer[10]; 243 sprintf(buffer, "\r\nERROR\r\n"); 244 return send_str_over_rfcomm(cid, buffer); 245 } 246 247 static int hfp_ag_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 248 char buffer[20]; 249 sprintf(buffer, "\r\n%s=%d\r\n", HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 250 return send_str_over_rfcomm(cid, buffer); 251 } 252 253 // fast & small implementation for fixed int size 254 static int string_len_for_uint32(uint32_t i){ 255 if (i < 10) return 1; 256 if (i < 100) return 2; 257 if (i < 1000) return 3; 258 if (i < 10000) return 4; 259 if (i < 100000) return 5; 260 if (i < 1000000) return 6; 261 if (i < 10000000) return 7; 262 if (i < 100000000) return 8; 263 if (i < 1000000000) return 9; 264 return 10; 265 } 266 267 // get size for indicator string 268 static int hfp_ag_indicators_string_size(hfp_connection_t * context, int i){ 269 // template: ("$NAME",($MIN,$MAX)) 270 return 8 + strlen(get_hfp_ag_indicators(context)[i].name) 271 + string_len_for_uint32(get_hfp_ag_indicators(context)[i].min_range) 272 + string_len_for_uint32(get_hfp_ag_indicators(context)[i].min_range); 273 } 274 275 // store indicator 276 static void hfp_ag_indicators_string_store(hfp_connection_t * context, int i, uint8_t * buffer){ 277 sprintf((char *) buffer, "(\"%s\",(%d,%d)),", 278 get_hfp_ag_indicators(context)[i].name, 279 get_hfp_ag_indicators(context)[i].min_range, 280 get_hfp_ag_indicators(context)[i].max_range); 281 } 282 283 // structure: header [indicator [comma indicator]] footer 284 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * context){ 285 int num_indicators = get_hfp_ag_indicators_nr(context); 286 if (!num_indicators) return 2; 287 return 3 + (num_indicators-1) * 2; 288 } 289 290 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 291 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * context, int index){ 292 if (index == 0) { 293 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 294 } 295 index--; 296 int num_indicators = get_hfp_ag_indicators_nr(context); 297 int indicator_index = index >> 1; 298 if ((index & 1) == 0){ 299 return hfp_ag_indicators_string_size(context, indicator_index); 300 } 301 if (indicator_index == num_indicators - 1){ 302 return 8; // "\r\n\r\nOK\r\n" 303 } 304 return 1; // comma 305 } 306 307 static void hgp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * context, int index, uint8_t * buffer){ 308 if (index == 0){ 309 *buffer++ = '\r'; 310 *buffer++ = '\n'; 311 int len = strlen(HFP_INDICATOR); 312 memcpy(buffer, HFP_INDICATOR, len); 313 buffer += len; 314 *buffer++ = ':'; 315 return; 316 } 317 index--; 318 int num_indicators = get_hfp_ag_indicators_nr(context); 319 int indicator_index = index >> 1; 320 if ((index & 1) == 0){ 321 hfp_ag_indicators_string_store(context, indicator_index, buffer); 322 return; 323 } 324 if (indicator_index == num_indicators-1){ 325 memcpy(buffer, "\r\n\r\nOK\r\n", 8); 326 return; 327 } 328 *buffer = ','; 329 } 330 331 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 332 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 333 int i; 334 int offset = 0; 335 for (i = 0; i < get_hfp_generic_status_indicators_nr()-1; i++) { 336 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", get_hfp_generic_status_indicators()[i].uuid); 337 } 338 if (i < get_hfp_generic_status_indicators_nr()){ 339 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", get_hfp_generic_status_indicators()[i].uuid); 340 } 341 return offset; 342 } 343 344 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 345 if (buffer_size < get_hfp_generic_status_indicators_nr() * 3) return 0; 346 int i; 347 int offset = 0; 348 for (i = 0; i < get_hfp_generic_status_indicators_nr(); i++) { 349 offset += snprintf(buffer+offset, buffer_size-offset, "\r\n%s:%d,%d\r\n", HFP_GENERIC_STATUS_INDICATOR, get_hfp_generic_status_indicators()[i].uuid, get_hfp_generic_status_indicators()[i].state); 350 } 351 return offset; 352 } 353 354 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 355 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 356 int i; 357 int offset = 0; 358 for (i = 0; i < hfp_ag_indicators_nr-1; i++) { 359 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 360 } 361 if (i<hfp_ag_indicators_nr){ 362 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 363 } 364 return offset; 365 } 366 367 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 368 if (buffer_size < hfp_ag_call_hold_services_nr * 3) return 0; 369 int i; 370 int offset = snprintf(buffer, buffer_size, "("); 371 for (i = 0; i < hfp_ag_call_hold_services_nr-1; i++) { 372 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 373 } 374 if (i<hfp_ag_call_hold_services_nr){ 375 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 376 } 377 return offset; 378 } 379 380 static int hfp_ag_cmd_via_generator(uint16_t cid, hfp_connection_t * context, 381 int start_segment, int num_segments, 382 int (*get_segment_len)(hfp_connection_t * context, int segment), 383 void (*store_segment) (hfp_connection_t * context, int segment, uint8_t * buffer)){ 384 385 // assumes: can send now == true 386 // assumes: num segments > 0 387 rfcomm_reserve_packet_buffer(); 388 int mtu = rfcomm_get_max_frame_size(cid); 389 uint8_t * data = rfcomm_get_outgoing_buffer(); 390 int offset = 0; 391 int segment = start_segment; 392 while (segment < num_segments){ 393 int segment_len = get_segment_len(context, segment); 394 if (offset + segment_len <= mtu){ 395 store_segment(context, segment, data+offset); 396 offset += segment_len; 397 segment++; 398 } 399 } 400 rfcomm_send_prepared(cid, offset); 401 return segment; 402 } 403 404 // returns next segment to store 405 static int hfp_ag_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * context, int start_segment){ 406 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(context); 407 return hfp_ag_cmd_via_generator(cid, context, start_segment, num_segments, 408 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 409 } 410 411 static int hfp_ag_retrieve_indicators_status_cmd(uint16_t cid){ 412 char buffer[40]; 413 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_INDICATOR); 414 offset += hfp_ag_indicators_status_join(buffer+offset, sizeof(buffer)-offset); 415 416 buffer[offset] = 0; 417 418 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 419 buffer[offset] = 0; 420 return send_str_over_rfcomm(cid, buffer); 421 } 422 423 static int hfp_ag_set_indicator_status_update_cmd(uint16_t cid, uint8_t activate){ 424 // AT\r\n%s:3,0,0,%d\r\n 425 return hfp_ag_ok(cid); 426 } 427 428 429 static int hfp_ag_retrieve_can_hold_call_cmd(uint16_t cid){ 430 char buffer[40]; 431 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 432 offset += hfp_ag_call_services_join(buffer+offset, sizeof(buffer)-offset); 433 434 buffer[offset] = 0; 435 436 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 437 buffer[offset] = 0; 438 return send_str_over_rfcomm(cid, buffer); 439 } 440 441 442 static int hfp_ag_list_supported_generic_status_indicators_cmd(uint16_t cid){ 443 return hfp_ag_ok(cid); 444 } 445 446 static int hfp_ag_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 447 char buffer[40]; 448 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 449 offset += hfp_hf_indicators_join(buffer+offset, sizeof(buffer)-offset); 450 451 buffer[offset] = 0; 452 453 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ")\r\n\r\nOK\r\n"); 454 buffer[offset] = 0; 455 return send_str_over_rfcomm(cid, buffer); 456 } 457 458 static int hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 459 char buffer[40]; 460 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer)); 461 462 buffer[offset] = 0; 463 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 464 buffer[offset] = 0; 465 return send_str_over_rfcomm(cid, buffer); 466 } 467 468 static int hfp_ag_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 469 char buffer[20]; 470 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 471 return send_str_over_rfcomm(cid, buffer); 472 } 473 474 static int hfp_ag_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 475 char buffer[40]; 476 if (strlen(op.name) == 0){ 477 sprintf(buffer, "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 478 } else { 479 sprintf(buffer, "\r\n%s:%d,%d,%s\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format, op.name); 480 } 481 return send_str_over_rfcomm(cid, buffer); 482 } 483 484 485 static int hfp_ag_cmd_suggest_codec(uint16_t cid, uint8_t codec){ 486 char buffer[30]; 487 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CONFIRM_COMMON_CODEC, codec); 488 return send_str_over_rfcomm(cid, buffer); 489 } 490 491 static int hfp_ag_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 492 char buffer[30]; 493 sprintf(buffer, "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 494 return send_str_over_rfcomm(cid, buffer); 495 } 496 497 static int hfp_ag_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 498 char buffer[30]; 499 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_SPEAKER_GAIN, gain); 500 return send_str_over_rfcomm(cid, buffer); 501 } 502 503 static int hfp_ag_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 504 char buffer[30]; 505 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_MICROPHONE_GAIN, gain); 506 return send_str_over_rfcomm(cid, buffer); 507 } 508 509 static int hfp_ag_set_response_and_hold(uint16_t cid, int state){ 510 char buffer[30]; 511 sprintf(buffer, "\r\n%s: %d\r\n", HFP_RESPONSE_AND_HOLD, state); 512 return send_str_over_rfcomm(cid, buffer); 513 } 514 515 516 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *context){ 517 int i,j; 518 uint8_t codec = HFP_CODEC_CVSD; 519 for (i = 0; i < hfp_codecs_nr; i++){ 520 for (j = 0; j < context->remote_codecs_nr; j++){ 521 if (context->remote_codecs[j] == hfp_codecs[i]){ 522 codec = context->remote_codecs[j]; 523 continue; 524 } 525 } 526 } 527 return codec; 528 } 529 530 static int codecs_exchange_state_machine(hfp_connection_t * context){ 531 /* events ( == commands): 532 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 533 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 534 hf_trigger_codec_connection_setup == received BCC 535 ag_trigger_codec_connection_setup == received from AG to send BCS 536 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 537 */ 538 539 switch (context->codecs_state){ 540 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 541 context->command = HFP_CMD_AG_SEND_COMMON_CODEC; 542 break; 543 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 544 context->command = HFP_CMD_AG_SEND_COMMON_CODEC; 545 break; 546 default: 547 break; 548 } 549 550 // printf(" -> State machine: CC\n"); 551 552 switch (context->command){ 553 case HFP_CMD_AVAILABLE_CODECS: 554 //printf("HFP_CODECS_RECEIVED_LIST \n"); 555 if (context->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 556 context->codecs_state = HFP_CODECS_RECEIVED_LIST; 557 hfp_ag_ok(context->rfcomm_cid); 558 return 1; 559 } 560 561 switch (context->codecs_state){ 562 case HFP_CODECS_AG_SENT_COMMON_CODEC: 563 case HFP_CODECS_EXCHANGED: 564 context->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 565 break; 566 default: 567 break; 568 } 569 hfp_ag_ok(context->rfcomm_cid); 570 return 1; 571 572 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 573 //printf(" HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP \n"); 574 context->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 575 hfp_ag_ok(context->rfcomm_cid); 576 return 1; 577 578 case HFP_CMD_AG_SEND_COMMON_CODEC: 579 //printf(" HFP_CMD_AG_SEND_COMMON_CODEC \n"); 580 context->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 581 context->suggested_codec = hfp_ag_suggest_codec(context); 582 hfp_ag_cmd_suggest_codec(context->rfcomm_cid, context->suggested_codec); 583 return 1; 584 585 case HFP_CMD_HF_CONFIRMED_CODEC: 586 //printf("HFP_CMD_HF_CONFIRMED_CODEC \n"); 587 if (context->codec_confirmed != context->suggested_codec){ 588 context->codecs_state = HFP_CODECS_ERROR; 589 hfp_ag_error(context->rfcomm_cid); 590 return 1; 591 } 592 context->negotiated_codec = context->codec_confirmed; 593 context->codecs_state = HFP_CODECS_EXCHANGED; 594 hfp_emit_event(hfp_callback, HFP_SUBEVENT_CODECS_CONNECTION_COMPLETE, 0); 595 hfp_ag_ok(context->rfcomm_cid); 596 return 1; 597 default: 598 break; 599 } 600 return 0; 601 } 602 603 static void hfp_init_link_settings(hfp_connection_t * context){ 604 // determine highest possible link setting 605 context->link_setting = HFP_LINK_SETTINGS_D1; 606 if (hci_remote_esco_supported(context->con_handle)){ 607 context->link_setting = HFP_LINK_SETTINGS_S3; 608 if ((context->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) 609 && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4))){ 610 context->link_setting = HFP_LINK_SETTINGS_S4; 611 } 612 } 613 } 614 615 static void hfp_ag_slc_established(hfp_connection_t * context){ 616 context->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 617 hfp_emit_event(hfp_callback, HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED, 0); 618 619 hfp_init_link_settings(context); 620 621 // if active call exist, set per-connection state active, too (when audio is on) 622 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 623 context->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 624 } 625 // if AG is ringing, also start ringing on the HF 626 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS && 627 hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 628 hfp_ag_hf_start_ringing(context); 629 } 630 } 631 632 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * context){ 633 if (context->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 634 int done = 0; 635 // printf(" -> State machine: SLC\n"); 636 switch(context->command){ 637 case HFP_CMD_SUPPORTED_FEATURES: 638 switch(context->state){ 639 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 640 case HFP_EXCHANGE_SUPPORTED_FEATURES: 641 if (has_codec_negotiation_feature(context)){ 642 context->state = HFP_W4_NOTIFY_ON_CODECS; 643 } else { 644 context->state = HFP_W4_RETRIEVE_INDICATORS; 645 } 646 hfp_ag_exchange_supported_features_cmd(context->rfcomm_cid); 647 return 1; 648 default: 649 break; 650 } 651 break; 652 case HFP_CMD_AVAILABLE_CODECS: 653 done = codecs_exchange_state_machine(context); 654 655 if (context->codecs_state == HFP_CODECS_RECEIVED_LIST){ 656 context->state = HFP_W4_RETRIEVE_INDICATORS; 657 } 658 return done; 659 660 case HFP_CMD_RETRIEVE_AG_INDICATORS: 661 if (context->state == HFP_W4_RETRIEVE_INDICATORS) { 662 context->command = HFP_CMD_NONE; // prevent reentrance 663 int next_segment = hfp_ag_retrieve_indicators_cmd_via_generator(context->rfcomm_cid, context, context->send_ag_indicators_segment); 664 if (next_segment < hfp_ag_indicators_cmd_generator_num_segments(context)){ 665 // prepare sending of next segment 666 context->send_ag_indicators_segment = next_segment; 667 context->command = HFP_CMD_RETRIEVE_AG_INDICATORS; 668 } else { 669 // done, go to next state 670 context->send_ag_indicators_segment = 0; 671 context->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 672 } 673 return 1; 674 } 675 break; 676 677 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 678 if (context->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 679 context->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 680 hfp_ag_retrieve_indicators_status_cmd(context->rfcomm_cid); 681 return 1; 682 683 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 684 if (context->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 685 if (has_call_waiting_and_3way_calling_feature(context)){ 686 context->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 687 } else if (has_hf_indicators_feature(context)){ 688 context->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 689 } else { 690 hfp_ag_slc_established(context); 691 } 692 hfp_ag_set_indicator_status_update_cmd(context->rfcomm_cid, 1); 693 return 1; 694 695 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 696 if (context->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 697 if (has_hf_indicators_feature(context)){ 698 context->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 699 } 700 hfp_ag_retrieve_can_hold_call_cmd(context->rfcomm_cid); 701 if (!has_hf_indicators_feature(context)){ 702 hfp_ag_slc_established(context); 703 } 704 return 1; 705 706 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 707 if (context->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 708 context->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 709 hfp_ag_list_supported_generic_status_indicators_cmd(context->rfcomm_cid); 710 return 1; 711 712 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 713 if (context->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 714 context->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 715 hfp_ag_retrieve_supported_generic_status_indicators_cmd(context->rfcomm_cid); 716 return 1; 717 718 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 719 if (context->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 720 hfp_ag_slc_established(context); 721 hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(context->rfcomm_cid); 722 return 1; 723 default: 724 break; 725 } 726 return done; 727 } 728 729 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * context){ 730 // if (context->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 731 732 int done = codecs_exchange_state_machine(context); 733 if (done) return done; 734 735 // printf(" -> State machine: SLC Queries\n"); 736 switch(context->command){ 737 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 738 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, context->ag_activate_voice_recognition); 739 hfp_ag_activate_voice_recognition_cmd(context->rfcomm_cid, context->ag_activate_voice_recognition); 740 return 1; 741 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 742 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 743 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, context->ag_activate_voice_recognition); 744 hfp_ag_ok(context->rfcomm_cid); 745 hfp_ag_setup_audio_connection(context); 746 } else { 747 hfp_ag_error(context->rfcomm_cid); 748 } 749 return 1; 750 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 751 hfp_ag_change_in_band_ring_tone_setting_cmd(context->rfcomm_cid); 752 return 1; 753 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 754 hfp_ag_report_network_operator_name_cmd(context->rfcomm_cid, context->network_operator); 755 return 1; 756 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 757 if (context->network_operator.format != 0){ 758 hfp_ag_error(context->rfcomm_cid); 759 } else { 760 hfp_ag_ok(context->rfcomm_cid); 761 } 762 return 1; 763 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 764 hfp_ag_ok(context->rfcomm_cid); 765 return 1; 766 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 767 if (context->extended_audio_gateway_error){ 768 context->extended_audio_gateway_error = 0; 769 hfp_ag_report_extended_audio_gateway_error(context->rfcomm_cid, context->extended_audio_gateway_error); 770 return 1; 771 } 772 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 773 hfp_ag_ok(context->rfcomm_cid); 774 return 1; 775 default: 776 break; 777 } 778 return 0; 779 } 780 781 static int hfp_ag_run_for_audio_connection(hfp_connection_t * context){ 782 if (context->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 783 context->state > HFP_W2_DISCONNECT_SCO) return 0; 784 785 786 if (context->state == HFP_AUDIO_CONNECTION_ESTABLISHED && context->release_audio_connection){ 787 context->state = HFP_W4_SCO_DISCONNECTED; 788 context->release_audio_connection = 0; 789 gap_disconnect(context->sco_handle); 790 return 1; 791 } 792 793 if (context->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 794 795 // run codecs exchange 796 int done = codecs_exchange_state_machine(context); 797 if (done) return done; 798 // printf(" -> State machine: Audio Connection\n"); 799 800 if (context->codecs_state != HFP_CODECS_EXCHANGED) return done; 801 if (context->establish_audio_connection){ 802 context->state = HFP_W4_SCO_CONNECTED; 803 context->establish_audio_connection = 0; 804 hfp_setup_synchronous_connection(context->con_handle, context->link_setting); 805 return 1; 806 } 807 return 0; 808 } 809 810 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 811 btstack_linked_list_iterator_t it; 812 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 813 814 while (btstack_linked_list_iterator_has_next(&it)){ 815 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 816 if ( &connection->hfp_timeout == ts) { 817 return connection; 818 } 819 } 820 return NULL; 821 } 822 823 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 824 hfp_connection_t * context = hfp_ag_context_for_timer(timer); 825 if (!context) return; 826 827 log_info("HFP start ring timeout, con handle 0x%02x", context->con_handle); 828 context->ag_ring = 1; 829 context->ag_send_clip = hfp_gsm_clip_type() && context->clip_enabled; 830 831 btstack_run_loop_set_timer(&context->hfp_timeout, 2000); // 5 seconds timeout 832 btstack_run_loop_add_timer(&context->hfp_timeout); 833 834 hfp_run_for_context(context); 835 } 836 837 static void hfp_timeout_start(hfp_connection_t * context){ 838 btstack_run_loop_remove_timer(&context->hfp_timeout); 839 btstack_run_loop_set_timer_handler(&context->hfp_timeout, hfp_timeout_handler); 840 btstack_run_loop_set_timer(&context->hfp_timeout, 2000); // 5 seconds timeout 841 btstack_run_loop_add_timer(&context->hfp_timeout); 842 } 843 844 static void hfp_timeout_stop(hfp_connection_t * context){ 845 log_info("HFP stop ring timeout, con handle 0x%02x", context->con_handle); 846 btstack_run_loop_remove_timer(&context->hfp_timeout); 847 } 848 849 // 850 // transitition implementations for hfp_ag_call_state_machine 851 // 852 853 static void hfp_ag_hf_start_ringing(hfp_connection_t * context){ 854 if (use_in_band_tone()){ 855 context->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 856 hfp_ag_establish_audio_connection(context->remote_addr); 857 } else { 858 hfp_timeout_start(context); 859 context->ag_ring = 1; 860 context->ag_send_clip = hfp_gsm_clip_type() && context->clip_enabled; 861 context->call_state = HFP_CALL_RINGING; 862 hfp_emit_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG, 0); 863 } 864 } 865 866 static void hfp_ag_hf_stop_ringing(hfp_connection_t * context){ 867 context->ag_ring = 0; 868 context->ag_send_clip = 0; 869 hfp_timeout_stop(context); 870 hfp_emit_event(hfp_callback, HFP_SUBEVENT_STOP_RINGINIG, 0); 871 } 872 873 static void hfp_ag_trigger_incoming_call(void){ 874 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 875 if (indicator_index < 0) return; 876 877 btstack_linked_list_iterator_t it; 878 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 879 while (btstack_linked_list_iterator_has_next(&it)){ 880 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 881 hfp_ag_establish_service_level_connection(connection->remote_addr); 882 if (connection->call_state == HFP_CALL_IDLE){ 883 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, indicator_index, 1); 884 hfp_ag_hf_start_ringing(connection); 885 } 886 if (connection->call_state == HFP_CALL_ACTIVE){ 887 connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 888 } 889 hfp_run_for_context(connection); 890 } 891 } 892 893 static void hfp_ag_transfer_callsetup_state(void){ 894 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 895 if (indicator_index < 0) return; 896 897 btstack_linked_list_iterator_t it; 898 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 899 while (btstack_linked_list_iterator_has_next(&it)){ 900 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 901 hfp_ag_establish_service_level_connection(connection->remote_addr); 902 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, indicator_index, 1); 903 hfp_run_for_context(connection); 904 } 905 } 906 907 static void hfp_ag_transfer_call_state(void){ 908 int indicator_index = get_ag_indicator_index_for_name("call"); 909 if (indicator_index < 0) return; 910 911 btstack_linked_list_iterator_t it; 912 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 913 while (btstack_linked_list_iterator_has_next(&it)){ 914 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 915 hfp_ag_establish_service_level_connection(connection->remote_addr); 916 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, indicator_index, 1); 917 hfp_run_for_context(connection); 918 } 919 } 920 921 static void hfp_ag_transfer_callheld_state(void){ 922 int indicator_index = get_ag_indicator_index_for_name("callheld"); 923 if (indicator_index < 0) return; 924 925 btstack_linked_list_iterator_t it; 926 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 927 while (btstack_linked_list_iterator_has_next(&it)){ 928 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 929 hfp_ag_establish_service_level_connection(connection->remote_addr); 930 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, indicator_index, 1); 931 hfp_run_for_context(connection); 932 } 933 } 934 935 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 936 937 int call_indicator_index = get_ag_indicator_index_for_name("call"); 938 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 939 940 btstack_linked_list_iterator_t it; 941 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 942 while (btstack_linked_list_iterator_has_next(&it)){ 943 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 944 if (connection->call_state != HFP_CALL_RINGING && 945 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 946 947 hfp_ag_hf_stop_ringing(connection); 948 if (connection == source){ 949 connection->ok_pending = 1; 950 951 if (use_in_band_tone()){ 952 connection->call_state = HFP_CALL_ACTIVE; 953 } else { 954 connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 955 hfp_ag_establish_audio_connection(connection->remote_addr); 956 } 957 958 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 959 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 960 961 } else { 962 connection->call_state = HFP_CALL_IDLE; 963 } 964 hfp_run_for_context(connection); 965 } 966 } 967 968 static void hfp_ag_ag_accept_call(void){ 969 970 int call_indicator_index = get_ag_indicator_index_for_name("call"); 971 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 972 973 btstack_linked_list_iterator_t it; 974 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 975 while (btstack_linked_list_iterator_has_next(&it)){ 976 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 977 if (connection->call_state != HFP_CALL_RINGING) continue; 978 979 hfp_ag_hf_stop_ringing(connection); 980 connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 981 982 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 983 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 984 985 hfp_run_for_context(connection); 986 break; // only single 987 } 988 } 989 990 static void hfp_ag_trigger_reject_call(void){ 991 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 992 btstack_linked_list_iterator_t it; 993 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 994 while (btstack_linked_list_iterator_has_next(&it)){ 995 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 996 if (connection->call_state != HFP_CALL_RINGING && 997 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 998 hfp_ag_hf_stop_ringing(connection); 999 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1000 connection->call_state = HFP_CALL_IDLE; 1001 hfp_run_for_context(connection); 1002 } 1003 } 1004 1005 static void hfp_ag_trigger_terminate_call(void){ 1006 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1007 1008 btstack_linked_list_iterator_t it; 1009 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1010 while (btstack_linked_list_iterator_has_next(&it)){ 1011 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1012 hfp_ag_establish_service_level_connection(connection->remote_addr); 1013 if (connection->call_state == HFP_CALL_IDLE) continue; 1014 connection->call_state = HFP_CALL_IDLE; 1015 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1016 connection->release_audio_connection = 1; 1017 hfp_run_for_context(connection); 1018 } 1019 hfp_emit_event(hfp_callback, HFP_SUBEVENT_CALL_TERMINATED, 0); 1020 } 1021 1022 static void hfp_ag_set_callsetup_indicator(){ 1023 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1024 if (!indicator){ 1025 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1026 }; 1027 indicator->status = hfp_gsm_callsetup_status(); 1028 } 1029 1030 static void hfp_ag_set_callheld_indicator(){ 1031 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1032 if (!indicator){ 1033 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1034 }; 1035 indicator->status = hfp_gsm_callheld_status(); 1036 } 1037 1038 static void hfp_ag_set_call_indicator(){ 1039 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1040 if (!indicator){ 1041 log_error("hfp_ag_set_call_state: call indicator is missing"); 1042 }; 1043 indicator->status = hfp_gsm_call_status(); 1044 } 1045 1046 static void hfp_ag_stop_ringing(void){ 1047 btstack_linked_list_iterator_t it; 1048 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1049 while (btstack_linked_list_iterator_has_next(&it)){ 1050 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1051 if (connection->call_state != HFP_CALL_RINGING && 1052 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1053 hfp_ag_hf_stop_ringing(connection); 1054 } 1055 } 1056 1057 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1058 btstack_linked_list_iterator_t it; 1059 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1060 while (btstack_linked_list_iterator_has_next(&it)){ 1061 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1062 if (connection->call_state == call_state) return connection; 1063 } 1064 return NULL; 1065 } 1066 1067 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1068 btstack_linked_list_iterator_t it; 1069 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1070 while (btstack_linked_list_iterator_has_next(&it)){ 1071 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1072 connection->send_response_and_hold_status = state + 1; 1073 } 1074 } 1075 1076 static int call_setup_state_machine(hfp_connection_t * connection){ 1077 int indicator_index; 1078 switch (connection->call_state){ 1079 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1080 if (connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1081 // we got event: audio connection established 1082 hfp_timeout_start(connection); 1083 connection->ag_ring = 1; 1084 connection->ag_send_clip = hfp_gsm_clip_type() && connection->clip_enabled; 1085 connection->call_state = HFP_CALL_RINGING; 1086 connection->call_state = HFP_CALL_RINGING; 1087 hfp_emit_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG, 0); 1088 break; 1089 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1090 if (connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1091 // we got event: audio connection established 1092 connection->call_state = HFP_CALL_ACTIVE; 1093 break; 1094 case HFP_CALL_W2_SEND_CALL_WAITING: 1095 connection->call_state = HFP_CALL_W4_CHLD; 1096 hfp_ag_send_call_waiting_notification(connection->rfcomm_cid); 1097 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1098 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1099 break; 1100 default: 1101 break; 1102 } 1103 return 0; 1104 } 1105 // connection is used to identify originating HF 1106 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * connection){ 1107 int indicator_index; 1108 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1109 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1110 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1111 1112 //printf("hfp_ag_call_sm event %d \n", event); 1113 switch (event){ 1114 case HFP_AG_INCOMING_CALL: 1115 switch (hfp_gsm_call_status()){ 1116 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1117 switch (hfp_gsm_callsetup_status()){ 1118 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1119 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1120 hfp_ag_set_callsetup_indicator(); 1121 hfp_ag_trigger_incoming_call(); 1122 printf("AG rings\n"); 1123 break; 1124 default: 1125 break; 1126 } 1127 break; 1128 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1129 switch (hfp_gsm_callsetup_status()){ 1130 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1131 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1132 hfp_ag_set_callsetup_indicator(); 1133 hfp_ag_trigger_incoming_call(); 1134 printf("AG call waiting\n"); 1135 break; 1136 default: 1137 break; 1138 } 1139 break; 1140 } 1141 break; 1142 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1143 switch (hfp_gsm_call_status()){ 1144 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1145 switch (hfp_gsm_callsetup_status()){ 1146 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1147 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1148 hfp_ag_set_call_indicator(); 1149 hfp_ag_set_callsetup_indicator(); 1150 hfp_ag_ag_accept_call(); 1151 printf("AG answers call, accept call by GSM\n"); 1152 break; 1153 default: 1154 break; 1155 } 1156 break; 1157 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1158 switch (hfp_gsm_callsetup_status()){ 1159 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1160 printf("AG: current call is placed on hold, incoming call gets active\n"); 1161 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1162 hfp_ag_set_callsetup_indicator(); 1163 hfp_ag_set_callheld_indicator(); 1164 hfp_ag_transfer_callsetup_state(); 1165 hfp_ag_transfer_callheld_state(); 1166 break; 1167 default: 1168 break; 1169 } 1170 break; 1171 } 1172 break; 1173 1174 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1175 switch (hfp_gsm_call_status()){ 1176 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1177 switch (hfp_gsm_callheld_status()){ 1178 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1179 printf("AG: joining held call with active call\n"); 1180 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1181 hfp_ag_set_callheld_indicator(); 1182 hfp_ag_transfer_callheld_state(); 1183 hfp_emit_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL, 0); 1184 break; 1185 default: 1186 break; 1187 } 1188 break; 1189 default: 1190 break; 1191 } 1192 break; 1193 1194 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1195 switch (hfp_gsm_call_status()){ 1196 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1197 switch (hfp_gsm_callsetup_status()){ 1198 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1199 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1200 hfp_ag_set_callsetup_indicator(); 1201 hfp_ag_set_call_indicator(); 1202 hfp_ag_hf_accept_call(connection); 1203 printf("HF answers call, accept call by GSM\n"); 1204 hfp_emit_event(hfp_callback, HFP_CMD_CALL_ANSWERED, 0); 1205 break; 1206 default: 1207 break; 1208 } 1209 break; 1210 default: 1211 break; 1212 } 1213 break; 1214 1215 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1216 switch (hfp_gsm_call_status()){ 1217 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1218 switch (hfp_gsm_callsetup_status()){ 1219 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1220 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1221 hfp_ag_response_and_hold_active = 1; 1222 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1223 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1224 // as with regualr call 1225 hfp_ag_set_call_indicator(); 1226 hfp_ag_set_callsetup_indicator(); 1227 hfp_ag_ag_accept_call(); 1228 printf("AG response and hold - hold by AG\n"); 1229 break; 1230 default: 1231 break; 1232 } 1233 break; 1234 default: 1235 break; 1236 } 1237 break; 1238 1239 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1240 switch (hfp_gsm_call_status()){ 1241 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1242 switch (hfp_gsm_callsetup_status()){ 1243 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1244 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1245 hfp_ag_response_and_hold_active = 1; 1246 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1247 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1248 // as with regualr call 1249 hfp_ag_set_call_indicator(); 1250 hfp_ag_set_callsetup_indicator(); 1251 hfp_ag_hf_accept_call(connection); 1252 printf("AG response and hold - hold by HF\n"); 1253 break; 1254 default: 1255 break; 1256 } 1257 break; 1258 default: 1259 break; 1260 } 1261 break; 1262 1263 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1264 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1265 if (!hfp_ag_response_and_hold_active) break; 1266 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1267 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1268 hfp_ag_response_and_hold_active = 0; 1269 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1270 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1271 printf("Held Call accepted and active\n"); 1272 break; 1273 1274 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1275 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1276 if (!hfp_ag_response_and_hold_active) break; 1277 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1278 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1279 hfp_ag_response_and_hold_active = 0; 1280 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1281 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1282 // from terminate by ag 1283 hfp_ag_set_call_indicator(); 1284 hfp_ag_trigger_terminate_call(); 1285 break; 1286 1287 case HFP_AG_TERMINATE_CALL_BY_HF: 1288 switch (hfp_gsm_call_status()){ 1289 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1290 switch (hfp_gsm_callsetup_status()){ 1291 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1292 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1293 hfp_ag_set_callsetup_indicator(); 1294 hfp_ag_transfer_callsetup_state(); 1295 hfp_ag_trigger_reject_call(); 1296 printf("HF Rejected Incoming call, AG terminate call\n"); 1297 break; 1298 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1299 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1300 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1301 hfp_ag_set_callsetup_indicator(); 1302 hfp_ag_transfer_callsetup_state(); 1303 printf("AG terminate outgoing call process\n"); 1304 default: 1305 break; 1306 } 1307 break; 1308 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1309 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1310 hfp_ag_set_call_indicator(); 1311 hfp_ag_transfer_call_state(); 1312 connection->call_state = HFP_CALL_IDLE; 1313 printf("AG terminate call\n"); 1314 break; 1315 } 1316 break; 1317 1318 case HFP_AG_TERMINATE_CALL_BY_AG: 1319 switch (hfp_gsm_call_status()){ 1320 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1321 switch (hfp_gsm_callsetup_status()){ 1322 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1323 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1324 hfp_ag_set_callsetup_indicator(); 1325 hfp_ag_trigger_reject_call(); 1326 printf("AG Rejected Incoming call, AG terminate call\n"); 1327 break; 1328 default: 1329 break; 1330 } 1331 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1332 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1333 hfp_ag_set_callsetup_indicator(); 1334 hfp_ag_set_call_indicator(); 1335 hfp_ag_trigger_terminate_call(); 1336 printf("AG terminate call\n"); 1337 break; 1338 default: 1339 break; 1340 } 1341 break; 1342 case HFP_AG_CALL_DROPPED: 1343 switch (hfp_gsm_call_status()){ 1344 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1345 switch (hfp_gsm_callsetup_status()){ 1346 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1347 hfp_ag_stop_ringing(); 1348 printf("Incoming call interrupted\n"); 1349 break; 1350 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1351 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1352 printf("Outgoing call interrupted\n"); 1353 printf("AG notify call dropped\n"); 1354 break; 1355 default: 1356 break; 1357 } 1358 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1359 hfp_ag_set_callsetup_indicator(); 1360 hfp_ag_transfer_callsetup_state(); 1361 break; 1362 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1363 if (hfp_ag_response_and_hold_active) { 1364 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1365 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1366 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1367 } 1368 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1369 hfp_ag_set_callsetup_indicator(); 1370 hfp_ag_set_call_indicator(); 1371 hfp_ag_trigger_terminate_call(); 1372 printf("AG notify call dropped\n"); 1373 break; 1374 default: 1375 break; 1376 } 1377 break; 1378 1379 case HFP_AG_OUTGOING_CALL_INITIATED: 1380 // directly reject call if number of free slots is exceeded 1381 if (!hfp_gsm_call_possible()){ 1382 connection->send_error = 1; 1383 hfp_run_for_context(connection); 1384 break; 1385 } 1386 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &connection->line_buffer[3]); 1387 1388 connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1389 1390 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &connection->line_buffer[3]); 1391 break; 1392 1393 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1394 // directly reject call if number of free slots is exceeded 1395 if (!hfp_gsm_call_possible()){ 1396 connection->send_error = 1; 1397 hfp_run_for_context(connection); 1398 break; 1399 } 1400 1401 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1402 connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1403 1404 printf("\nRedial last number"); 1405 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1406 1407 if (strlen(last_dialed_number) > 0){ 1408 printf("\nLast number exists: accept call"); 1409 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1410 } else { 1411 printf("\nLast number missing: reject call"); 1412 hfp_ag_outgoing_call_rejected(); 1413 } 1414 break; 1415 } 1416 case HFP_AG_OUTGOING_CALL_REJECTED: 1417 connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1418 if (!connection){ 1419 log_info("hfp_ag_call_sm: did not find outgoing connection in initiated state"); 1420 break; 1421 } 1422 1423 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1424 connection->call_state = HFP_CALL_IDLE; 1425 connection->send_error = 1; 1426 hfp_run_for_context(connection); 1427 break; 1428 1429 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1430 connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1431 if (!connection){ 1432 log_info("hfp_ag_call_sm: did not find outgoing connection in initiated state"); 1433 break; 1434 } 1435 1436 connection->ok_pending = 1; 1437 connection->call_state = HFP_CALL_OUTGOING_DIALING; 1438 1439 // trigger callsetup to be 1440 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1441 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1442 1443 hfp_ag_set_callsetup_indicator(); 1444 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1445 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1446 1447 // put current call on hold if active 1448 if (put_call_on_hold){ 1449 printf("AG putting current call on hold for new outgoing call\n"); 1450 hfp_ag_set_callheld_indicator(); 1451 indicator_index = get_ag_indicator_index_for_name("callheld"); 1452 hfp_ag_transfer_ag_indicators_status_cmd(connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1453 } 1454 1455 // start audio if needed 1456 hfp_ag_establish_audio_connection(connection->remote_addr); 1457 break; 1458 } 1459 case HFP_AG_OUTGOING_CALL_RINGING: 1460 connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1461 if (!connection){ 1462 log_info("hfp_ag_call_sm: did not find outgoing connection in dialing state"); 1463 break; 1464 } 1465 1466 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1467 connection->call_state = HFP_CALL_OUTGOING_RINGING; 1468 hfp_ag_set_callsetup_indicator(); 1469 hfp_ag_transfer_callsetup_state(); 1470 break; 1471 1472 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1473 // get outgoing call 1474 connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1475 if (!connection){ 1476 connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1477 } 1478 if (!connection){ 1479 log_info("hfp_ag_call_sm: did not find outgoing connection"); 1480 break; 1481 } 1482 1483 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1484 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1485 connection->call_state = HFP_CALL_ACTIVE; 1486 hfp_ag_set_callsetup_indicator(); 1487 hfp_ag_set_call_indicator(); 1488 hfp_ag_transfer_call_state(); 1489 hfp_ag_transfer_callsetup_state(); 1490 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1491 hfp_ag_set_callheld_indicator(); 1492 hfp_ag_transfer_callheld_state(); 1493 } 1494 break; 1495 } 1496 1497 case HFP_AG_CALL_HOLD_USER_BUSY: 1498 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1499 hfp_ag_set_callsetup_indicator(); 1500 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1501 connection->call_state = HFP_CALL_ACTIVE; 1502 printf("AG: Call Waiting, User Busy\n"); 1503 break; 1504 1505 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1506 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1507 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1508 1509 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1510 if (call_held || call_setup_in_progress){ 1511 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, connection->call_index); 1512 1513 } 1514 1515 if (call_setup_in_progress){ 1516 printf("AG: Call Dropped, Accept new call\n"); 1517 hfp_ag_set_callsetup_indicator(); 1518 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1519 } else { 1520 printf("AG: Call Dropped, Resume held call\n"); 1521 } 1522 if (call_held){ 1523 hfp_ag_set_callheld_indicator(); 1524 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1525 } 1526 1527 connection->call_state = HFP_CALL_ACTIVE; 1528 break; 1529 } 1530 1531 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1532 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1533 // only update if callsetup changed 1534 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1535 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, connection->call_index); 1536 1537 if (call_setup_in_progress){ 1538 printf("AG: Call on Hold, Accept new call\n"); 1539 hfp_ag_set_callsetup_indicator(); 1540 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1541 } else { 1542 printf("AG: Swap calls\n"); 1543 } 1544 1545 hfp_ag_set_callheld_indicator(); 1546 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1547 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1548 connection->call_state = HFP_CALL_ACTIVE; 1549 break; 1550 } 1551 1552 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1553 // Adds a held call to the conversation. 1554 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1555 printf("AG: Join 3-way-call\n"); 1556 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1557 hfp_ag_set_callheld_indicator(); 1558 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1559 hfp_emit_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL, 0); 1560 } 1561 connection->call_state = HFP_CALL_ACTIVE; 1562 break; 1563 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1564 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1565 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1566 printf("AG: Transfer call -> Connect two calls and disconnect\n"); 1567 hfp_ag_set_call_indicator(); 1568 hfp_ag_set_callheld_indicator(); 1569 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1570 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1571 connection->call_state = HFP_CALL_IDLE; 1572 break; 1573 1574 default: 1575 break; 1576 } 1577 1578 1579 } 1580 1581 1582 static void hfp_ag_send_call_status(hfp_connection_t * connection, int call_index){ 1583 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1584 if (!active_call) return; 1585 1586 int idx = active_call->index; 1587 hfp_enhanced_call_dir_t dir = active_call->direction; 1588 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1589 hfp_enhanced_call_mode_t mode = active_call->mode; 1590 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1591 uint8_t type = active_call->clip_type; 1592 char * number = active_call->clip_number; 1593 1594 char buffer[100]; 1595 // TODO: check length of a buffer, to fit the MTU 1596 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1597 if (number){ 1598 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ", \"%s\",%u", number, type); 1599 } 1600 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1601 printf("hfp_ag_send_current_call_status 000 index %d, dir %d, status %d, mode %d, mpty %d, type %d, number %s\n", idx, dir, status, 1602 mode, mpty, type, number); 1603 send_str_over_rfcomm(connection->rfcomm_cid, buffer); 1604 } 1605 1606 static void hfp_run_for_context(hfp_connection_t *context){ 1607 if (!context) return; 1608 if (!rfcomm_can_send_packet_now(context->rfcomm_cid)) return; 1609 1610 if (context->send_status_of_current_calls){ 1611 context->ok_pending = 0; 1612 if (context->next_call_index < hfp_gsm_get_number_of_calls()){ 1613 context->next_call_index++; 1614 hfp_ag_send_call_status(context, context->next_call_index); 1615 } else { 1616 context->next_call_index = 0; 1617 context->ok_pending = 1; 1618 context->send_status_of_current_calls = 0; 1619 } 1620 return; 1621 } 1622 1623 if (context->command == HFP_CMD_UNKNOWN){ 1624 context->ok_pending = 0; 1625 context->send_error = 0; 1626 context->command = HFP_CMD_NONE; 1627 hfp_ag_error(context->rfcomm_cid); 1628 return; 1629 } 1630 1631 if (context->send_error){ 1632 context->send_error = 0; 1633 context->command = HFP_CMD_NONE; 1634 hfp_ag_error(context->rfcomm_cid); 1635 return; 1636 } 1637 1638 // note: before update AG indicators and ok_pending 1639 if (context->send_response_and_hold_status){ 1640 int status = context->send_response_and_hold_status - 1; 1641 context->send_response_and_hold_status = 0; 1642 hfp_ag_set_response_and_hold(context->rfcomm_cid, status); 1643 return; 1644 } 1645 1646 if (context->ok_pending){ 1647 context->ok_pending = 0; 1648 context->command = HFP_CMD_NONE; 1649 hfp_ag_ok(context->rfcomm_cid); 1650 return; 1651 } 1652 1653 // update AG indicators 1654 if (context->ag_indicators_status_update_bitmap){ 1655 int i; 1656 for (i=0;i<context->ag_indicators_nr;i++){ 1657 if (get_bit(context->ag_indicators_status_update_bitmap, i)){ 1658 context->ag_indicators_status_update_bitmap = store_bit(context->ag_indicators_status_update_bitmap, i, 0); 1659 if (!context->enable_status_update_for_ag_indicators) { 1660 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1661 break; 1662 } 1663 hfp_ag_transfer_ag_indicators_status_cmd(context->rfcomm_cid, &hfp_ag_indicators[i]); 1664 return; 1665 } 1666 } 1667 } 1668 1669 if (context->ag_ring){ 1670 context->ag_ring = 0; 1671 context->command = HFP_CMD_NONE; 1672 hfp_ag_ring(context->rfcomm_cid); 1673 return; 1674 } 1675 1676 if (context->ag_send_clip){ 1677 context->ag_send_clip = 0; 1678 context->command = HFP_CMD_NONE; 1679 hfp_ag_send_clip(context->rfcomm_cid); 1680 return; 1681 } 1682 1683 if (context->send_phone_number_for_voice_tag){ 1684 context->send_phone_number_for_voice_tag = 0; 1685 context->command = HFP_CMD_NONE; 1686 context->ok_pending = 1; 1687 hfp_ag_send_phone_number_for_voice_tag_cmd(context->rfcomm_cid); 1688 return; 1689 } 1690 1691 if (context->send_subscriber_number){ 1692 if (context->next_subscriber_number_to_send < subscriber_numbers_count){ 1693 hfp_phone_number_t phone = subscriber_numbers[context->next_subscriber_number_to_send++]; 1694 hfp_send_subscriber_number_cmd(context->rfcomm_cid, phone.type, phone.number); 1695 } else { 1696 context->send_subscriber_number = 0; 1697 context->next_subscriber_number_to_send = 0; 1698 hfp_ag_ok(context->rfcomm_cid); 1699 } 1700 context->command = HFP_CMD_NONE; 1701 } 1702 1703 if (context->send_microphone_gain){ 1704 context->send_microphone_gain = 0; 1705 context->command = HFP_CMD_NONE; 1706 hfp_ag_set_microphone_gain_cmd(context->rfcomm_cid, context->microphone_gain); 1707 return; 1708 } 1709 1710 if (context->send_speaker_gain){ 1711 context->send_speaker_gain = 0; 1712 context->command = HFP_CMD_NONE; 1713 hfp_ag_set_speaker_gain_cmd(context->rfcomm_cid, context->speaker_gain); 1714 return; 1715 } 1716 1717 if (context->send_ag_status_indicators){ 1718 context->send_ag_status_indicators = 0; 1719 hfp_ag_retrieve_indicators_status_cmd(context->rfcomm_cid); 1720 return; 1721 } 1722 1723 int done = hfp_ag_run_for_context_service_level_connection(context); 1724 if (!done){ 1725 done = hfp_ag_run_for_context_service_level_connection_queries(context); 1726 } 1727 1728 if (!done){ 1729 done = call_setup_state_machine(context); 1730 } 1731 1732 if (!done){ 1733 done = hfp_ag_run_for_audio_connection(context); 1734 } 1735 1736 if (context->command == HFP_CMD_NONE && !done){ 1737 // log_info("context->command == HFP_CMD_NONE"); 1738 switch(context->state){ 1739 case HFP_W2_DISCONNECT_RFCOMM: 1740 context->state = HFP_W4_RFCOMM_DISCONNECTED; 1741 rfcomm_disconnect(context->rfcomm_cid); 1742 break; 1743 default: 1744 break; 1745 } 1746 } 1747 if (done){ 1748 context->command = HFP_CMD_NONE; 1749 } 1750 } 1751 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1752 int i; 1753 for (i=0;i< get_hfp_generic_status_indicators_nr();i++){ 1754 hfp_generic_status_indicator_t * indicator = &get_hfp_generic_status_indicators()[i]; 1755 if (indicator->uuid == number){ 1756 return indicator; 1757 } 1758 } 1759 return NULL; 1760 } 1761 1762 static void hfp_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1763 hfp_connection_t * context = get_hfp_connection_context_for_rfcomm_cid(channel); 1764 if (!context) return; 1765 1766 char last_char = packet[size-1]; 1767 packet[size-1] = 0; 1768 log_info("HFP_RX %s", packet); 1769 packet[size-1] = last_char; 1770 1771 int pos; 1772 for (pos = 0; pos < size ; pos++){ 1773 hfp_parse(context, packet[pos], 0); 1774 } 1775 hfp_generic_status_indicator_t * indicator; 1776 int value; 1777 switch(context->command){ 1778 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1779 if (hfp_ag_response_and_hold_active){ 1780 context->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1781 } 1782 context->ok_pending = 1; 1783 break; 1784 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1785 value = atoi((char *)&context->line_buffer[0]); 1786 printf("HF Response and Hold: %u\n", value); 1787 switch(value){ 1788 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1789 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, context); 1790 break; 1791 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1792 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, context); 1793 break; 1794 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1795 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, context); 1796 break; 1797 default: 1798 break; 1799 } 1800 context->ok_pending = 1; 1801 break; 1802 case HFP_CMD_HF_INDICATOR_STATUS: 1803 context->command = HFP_CMD_NONE; 1804 // find indicator by assigned number 1805 indicator = get_hf_indicator_by_number(context->parser_indicator_index); 1806 if (!indicator){ 1807 context->send_error = 1; 1808 break; 1809 } 1810 value = atoi((char *)&context->line_buffer[0]); 1811 switch (indicator->uuid){ 1812 case 1: // enhanced security 1813 if (value > 1) { 1814 context->send_error = 1; 1815 return; 1816 } 1817 printf("HF Indicator 'enhanced security' set to %u\n", value); 1818 break; 1819 case 2: // battery level 1820 if (value > 100){ 1821 context->send_error = 1; 1822 return; 1823 } 1824 printf("HF Indicator 'battery' set to %u\n", value); 1825 break; 1826 default: 1827 printf("HF Indicator unknown set to %u\n", value); 1828 break; 1829 } 1830 context->ok_pending = 1; 1831 break; 1832 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1833 // expected by SLC state machine 1834 if (context->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1835 context->send_ag_indicators_segment = 0; 1836 context->send_ag_status_indicators = 1; 1837 break; 1838 case HFP_CMD_LIST_CURRENT_CALLS: 1839 context->command = HFP_CMD_NONE; 1840 context->next_call_index = 0; 1841 context->send_status_of_current_calls = 1; 1842 break; 1843 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1844 if (subscriber_numbers_count == 0){ 1845 hfp_ag_ok(context->rfcomm_cid); 1846 break; 1847 } 1848 context->next_subscriber_number_to_send = 0; 1849 context->send_subscriber_number = 1; 1850 break; 1851 case HFP_CMD_TRANSMIT_DTMF_CODES: 1852 context->command = HFP_CMD_NONE; 1853 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &context->line_buffer[0]); 1854 break; 1855 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1856 context->command = HFP_CMD_NONE; 1857 hfp_emit_event(hfp_callback, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG, 0); 1858 break; 1859 case HFP_CMD_TURN_OFF_EC_AND_NR: 1860 context->command = HFP_CMD_NONE; 1861 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1862 context->ok_pending = 1; 1863 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, context->ag_echo_and_noise_reduction); 1864 printf("AG: EC/NR = %u\n", context->ag_echo_and_noise_reduction); 1865 } else { 1866 context->send_error = 1; 1867 } 1868 break; 1869 case HFP_CMD_CALL_ANSWERED: 1870 context->command = HFP_CMD_NONE; 1871 printf("HFP: ATA\n"); 1872 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, context); 1873 break; 1874 case HFP_CMD_HANG_UP_CALL: 1875 context->command = HFP_CMD_NONE; 1876 context->ok_pending = 1; 1877 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, context); 1878 break; 1879 case HFP_CMD_CALL_HOLD: { 1880 // TODO: fully implement this 1881 log_error("HFP: unhandled call hold type %c", context->line_buffer[0]); 1882 context->command = HFP_CMD_NONE; 1883 context->ok_pending = 1; 1884 context->call_index = 0; 1885 1886 if (context->line_buffer[1] != '\0'){ 1887 context->call_index = atoi((char *)&context->line_buffer[1]); 1888 } 1889 1890 switch (context->line_buffer[0]){ 1891 case '0': 1892 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1893 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, context); 1894 break; 1895 case '1': 1896 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1897 // Where both a held and a waiting call exist, the above procedures shall apply to the 1898 // waiting call (i.e., not to the held call) in conflicting situation. 1899 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, context); 1900 break; 1901 case '2': 1902 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1903 // Where both a held and a waiting call exist, the above procedures shall apply to the 1904 // waiting call (i.e., not to the held call) in conflicting situation. 1905 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, context); 1906 break; 1907 case '3': 1908 // Adds a held call to the conversation. 1909 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, context); 1910 break; 1911 case '4': 1912 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1913 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, context); 1914 break; 1915 default: 1916 break; 1917 } 1918 break; 1919 } 1920 case HFP_CMD_CALL_PHONE_NUMBER: 1921 context->command = HFP_CMD_NONE; 1922 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, context); 1923 break; 1924 case HFP_CMD_REDIAL_LAST_NUMBER: 1925 context->command = HFP_CMD_NONE; 1926 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, context); 1927 break; 1928 case HFP_CMD_ENABLE_CLIP: 1929 context->command = HFP_CMD_NONE; 1930 context->clip_enabled = context->line_buffer[8] != '0'; 1931 log_info("hfp: clip set, now: %u", context->clip_enabled); 1932 context->ok_pending = 1; 1933 break; 1934 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1935 context->command = HFP_CMD_NONE; 1936 context->call_waiting_notification_enabled = context->line_buffer[8] != '0'; 1937 log_info("hfp: call waiting notification set, now: %u", context->call_waiting_notification_enabled); 1938 context->ok_pending = 1; 1939 break; 1940 case HFP_CMD_SET_SPEAKER_GAIN: 1941 context->command = HFP_CMD_NONE; 1942 context->ok_pending = 1; 1943 printf("HF speaker gain = %u\n", context->speaker_gain); 1944 break; 1945 case HFP_CMD_SET_MICROPHONE_GAIN: 1946 context->command = HFP_CMD_NONE; 1947 context->ok_pending = 1; 1948 printf("HF microphone gain = %u\n", context->microphone_gain); 1949 break; 1950 default: 1951 break; 1952 } 1953 } 1954 1955 static void hfp_run(void){ 1956 btstack_linked_list_iterator_t it; 1957 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1958 while (btstack_linked_list_iterator_has_next(&it)){ 1959 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1960 hfp_run_for_context(connection); 1961 } 1962 } 1963 1964 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1965 switch (packet_type){ 1966 case RFCOMM_DATA_PACKET: 1967 hfp_handle_rfcomm_data(packet_type, channel, packet, size); 1968 break; 1969 case HCI_EVENT_PACKET: 1970 hfp_handle_hci_event(packet_type, packet, size); 1971 break; 1972 default: 1973 break; 1974 } 1975 1976 hfp_run(); 1977 } 1978 1979 static void hfp_ag_set_ag_indicators(hfp_ag_indicator_t * ag_indicators, int ag_indicators_nr){ 1980 hfp_ag_indicators_nr = ag_indicators_nr; 1981 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 1982 } 1983 1984 void hfp_ag_init(uint16_t rfcomm_channel_nr, uint32_t supported_features, 1985 uint8_t * codecs, int codecs_nr, 1986 hfp_ag_indicator_t * ag_indicators, int ag_indicators_nr, 1987 hfp_generic_status_indicator_t * hf_indicators, int hf_indicators_nr, 1988 const char *call_hold_services[], int call_hold_services_nr){ 1989 if (codecs_nr > HFP_MAX_NUM_CODECS){ 1990 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 1991 return; 1992 } 1993 1994 // register for HCI events 1995 hci_event_callback_registration.callback = &packet_handler; 1996 hci_add_event_handler(&hci_event_callback_registration); 1997 1998 l2cap_init(); 1999 2000 rfcomm_register_service(packet_handler, rfcomm_channel_nr, 0xffff); 2001 2002 hfp_supported_features = supported_features; 2003 hfp_codecs_nr = codecs_nr; 2004 2005 int i; 2006 for (i=0; i<codecs_nr; i++){ 2007 hfp_codecs[i] = codecs[i]; 2008 } 2009 2010 hfp_ag_set_ag_indicators(ag_indicators, ag_indicators_nr); 2011 2012 set_hfp_generic_status_indicators(hf_indicators, hf_indicators_nr); 2013 2014 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2015 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2016 2017 hfp_ag_response_and_hold_active = 0; 2018 subscriber_numbers = NULL; 2019 subscriber_numbers_count = 0; 2020 2021 hfp_gsm_init(); 2022 } 2023 2024 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2025 hfp_establish_service_level_connection(bd_addr, SDP_Handsfree); 2026 } 2027 2028 void hfp_ag_release_service_level_connection(bd_addr_t bd_addr){ 2029 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2030 hfp_release_service_level_connection(connection); 2031 hfp_run_for_context(connection); 2032 } 2033 2034 void hfp_ag_report_extended_audio_gateway_error_result_code(bd_addr_t bd_addr, hfp_cme_error_t error){ 2035 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2036 if (!connection){ 2037 log_error("HFP HF: connection doesn't exist."); 2038 return; 2039 } 2040 connection->extended_audio_gateway_error = 0; 2041 if (!connection->enable_extended_audio_gateway_error_report){ 2042 return; 2043 } 2044 connection->extended_audio_gateway_error = error; 2045 hfp_run_for_context(connection); 2046 } 2047 2048 static void hfp_ag_setup_audio_connection(hfp_connection_t * connection){ 2049 if (connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2050 if (connection->state >= HFP_W2_DISCONNECT_SCO) return; 2051 2052 connection->establish_audio_connection = 1; 2053 2054 if (!has_codec_negotiation_feature(connection)){ 2055 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using defaults"); 2056 connection->codecs_state = HFP_CODECS_EXCHANGED; 2057 } 2058 2059 switch (connection->codecs_state){ 2060 case HFP_CODECS_IDLE: 2061 case HFP_CODECS_RECEIVED_LIST: 2062 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2063 case HFP_CODECS_ERROR: 2064 connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2065 break; 2066 default: 2067 break; 2068 } 2069 } 2070 2071 void hfp_ag_establish_audio_connection(bd_addr_t bd_addr){ 2072 hfp_ag_establish_service_level_connection(bd_addr); 2073 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2074 2075 connection->establish_audio_connection = 0; 2076 hfp_ag_setup_audio_connection(connection); 2077 hfp_run_for_context(connection); 2078 } 2079 2080 void hfp_ag_release_audio_connection(bd_addr_t bd_addr){ 2081 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2082 hfp_release_audio_connection(connection); 2083 hfp_run_for_context(connection); 2084 } 2085 2086 /** 2087 * @brief Enable in-band ring tone 2088 */ 2089 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2090 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2091 return; 2092 } 2093 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2094 2095 btstack_linked_list_iterator_t it; 2096 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2097 while (btstack_linked_list_iterator_has_next(&it)){ 2098 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2099 connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2100 hfp_run_for_context(connection); 2101 } 2102 } 2103 2104 /** 2105 * @brief Called from GSM 2106 */ 2107 void hfp_ag_incoming_call(void){ 2108 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2109 } 2110 2111 /** 2112 * @brief number is stored. 2113 */ 2114 void hfp_ag_set_clip(uint8_t type, const char * number){ 2115 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2116 } 2117 2118 void hfp_ag_call_dropped(void){ 2119 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2120 } 2121 2122 // call from AG UI 2123 void hfp_ag_answer_incoming_call(void){ 2124 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2125 } 2126 2127 void hfp_ag_join_held_call(void){ 2128 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2129 } 2130 2131 void hfp_ag_terminate_call(void){ 2132 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2133 } 2134 2135 void hfp_ag_outgoing_call_ringing(void){ 2136 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2137 } 2138 2139 void hfp_ag_outgoing_call_established(void){ 2140 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2141 } 2142 2143 void hfp_ag_outgoing_call_rejected(void){ 2144 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2145 } 2146 2147 void hfp_ag_outgoing_call_accepted(void){ 2148 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2149 } 2150 2151 void hfp_ag_hold_incoming_call(void){ 2152 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2153 } 2154 2155 void hfp_ag_accept_held_incoming_call(void) { 2156 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2157 } 2158 2159 void hfp_ag_reject_held_incoming_call(void){ 2160 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2161 } 2162 2163 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2164 int indicator_index = get_ag_indicator_index_for_name(name); 2165 if (indicator_index < 0) return; 2166 hfp_ag_indicators[indicator_index].status = value; 2167 2168 2169 btstack_linked_list_iterator_t it; 2170 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2171 while (btstack_linked_list_iterator_has_next(&it)){ 2172 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2173 if (!connection->ag_indicators[indicator_index].enabled) { 2174 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2175 continue; 2176 } 2177 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2178 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2179 hfp_run_for_context(connection); 2180 } 2181 } 2182 2183 /* 2184 * @brief 2185 */ 2186 void hfp_ag_set_registration_status(int status){ 2187 hfp_ag_set_ag_indicator("service", status); 2188 } 2189 2190 /* 2191 * @brief 2192 */ 2193 void hfp_ag_set_signal_strength(int strength){ 2194 hfp_ag_set_ag_indicator("signal", strength); 2195 } 2196 2197 /* 2198 * @brief 2199 */ 2200 void hfp_ag_set_roaming_status(int status){ 2201 hfp_ag_set_ag_indicator("roam", status); 2202 } 2203 2204 /* 2205 * @brief 2206 */ 2207 void hfp_ag_set_battery_level(int level){ 2208 hfp_ag_set_ag_indicator("battchg", level); 2209 } 2210 2211 /* 2212 * @brief 2213 */ 2214 void hfp_ag_activate_voice_recognition(bd_addr_t bd_addr, int activate){ 2215 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2216 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2217 2218 if (!get_bit(connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2219 printf("AG cannot acivate voice recognition - not supported by HF\n"); 2220 return; 2221 } 2222 2223 if (activate){ 2224 hfp_ag_establish_audio_connection(bd_addr); 2225 } 2226 2227 connection->ag_activate_voice_recognition = activate; 2228 connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2229 hfp_run_for_context(connection); 2230 } 2231 2232 /* 2233 * @brief 2234 */ 2235 void hfp_ag_set_microphone_gain(bd_addr_t bd_addr, int gain){ 2236 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2237 if (connection->microphone_gain != gain){ 2238 connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2239 connection->microphone_gain = gain; 2240 connection->send_microphone_gain = 1; 2241 } 2242 hfp_run_for_context(connection); 2243 } 2244 2245 /* 2246 * @brief 2247 */ 2248 void hfp_ag_set_speaker_gain(bd_addr_t bd_addr, int gain){ 2249 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2250 if (connection->speaker_gain != gain){ 2251 connection->speaker_gain = gain; 2252 connection->send_speaker_gain = 1; 2253 } 2254 hfp_run_for_context(connection); 2255 } 2256 2257 /* 2258 * @brief 2259 */ 2260 void hfp_ag_send_phone_number_for_voice_tag(bd_addr_t bd_addr, const char * number){ 2261 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2262 hfp_ag_set_clip(0, number); 2263 connection->send_phone_number_for_voice_tag = 1; 2264 } 2265 2266 void hfp_ag_reject_phone_number_for_voice_tag(bd_addr_t bd_addr){ 2267 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2268 connection->send_error = 1; 2269 } 2270 2271 void hfp_ag_send_dtmf_code_done(bd_addr_t bd_addr){ 2272 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2273 connection->ok_pending = 1; 2274 } 2275 2276 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2277 subscriber_numbers = numbers; 2278 subscriber_numbers_count = numbers_count; 2279 } 2280 2281 void hfp_ag_clear_last_dialed_number(void){ 2282 hfp_gsm_clear_last_dialed_number(); 2283 } 2284 2285 2286