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 // Minimal setup for HFP Audio Gateway (AG) unit (!! UNDER DEVELOPMENT !!) 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_cmds.h" 52 #include "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.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 static const char default_hfp_ag_service_name[] = "Voice gateway"; 66 67 static uint16_t hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 68 69 static uint8_t hfp_codecs_nr = 0; 70 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 71 72 static int hfp_ag_indicators_nr = 0; 73 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_AG_INDICATORS]; 74 75 static int hfp_ag_call_hold_services_nr = 0; 76 static char *hfp_ag_call_hold_services[6]; 77 static hfp_callback_t hfp_callback; 78 79 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 80 static int hfp_ag_response_and_hold_active = 0; 81 82 // Subcriber information entries 83 static hfp_phone_number_t * subscriber_numbers = NULL; 84 static int subscriber_numbers_count = 0; 85 86 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 87 static void hfp_run_for_context(hfp_connection_t *context); 88 static void hfp_ag_setup_audio_connection(hfp_connection_t * connection); 89 static void hfp_ag_hf_start_ringing(hfp_connection_t * context); 90 91 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(); 92 int get_hfp_generic_status_indicators_nr(); 93 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 94 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 95 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 96 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 97 98 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context){ 99 // TODO: save only value, and value changed in the context? 100 if (context->ag_indicators_nr != hfp_ag_indicators_nr){ 101 context->ag_indicators_nr = hfp_ag_indicators_nr; 102 memcpy(context->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 103 } 104 return (hfp_ag_indicator_t *)&(context->ag_indicators); 105 } 106 107 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 108 int i; 109 for (i = 0; i < hfp_ag_indicators_nr; i++){ 110 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 111 return &hfp_ag_indicators[i]; 112 } 113 } 114 return NULL; 115 } 116 117 static int get_ag_indicator_index_for_name(const char * name){ 118 int i; 119 for (i = 0; i < hfp_ag_indicators_nr; i++){ 120 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 121 return i; 122 } 123 } 124 return -1; 125 } 126 127 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr){ 128 memcpy(hfp_ag_indicators, indicators, indicator_nr * sizeof(hfp_ag_indicator_t)); 129 hfp_ag_indicators_nr = indicator_nr; 130 } 131 132 int get_hfp_ag_indicators_nr(hfp_connection_t * context){ 133 if (context->ag_indicators_nr != hfp_ag_indicators_nr){ 134 context->ag_indicators_nr = hfp_ag_indicators_nr; 135 memcpy(context->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 136 } 137 return context->ag_indicators_nr; 138 } 139 140 141 void hfp_ag_register_packet_handler(hfp_callback_t callback){ 142 if (callback == NULL){ 143 log_error("hfp_ag_register_packet_handler called with NULL callback"); 144 return; 145 } 146 hfp_callback = callback; 147 } 148 149 static int use_in_band_tone(){ 150 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 151 } 152 153 static int has_codec_negotiation_feature(hfp_connection_t * connection){ 154 int hf = get_bit(connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 155 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 156 return hf && ag; 157 } 158 159 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * connection){ 160 int hf = get_bit(connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 161 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 162 return hf && ag; 163 } 164 165 static int has_hf_indicators_feature(hfp_connection_t * connection){ 166 int hf = get_bit(connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 167 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 168 return hf && ag; 169 } 170 171 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){ 172 if (!name){ 173 name = default_hfp_ag_service_name; 174 } 175 hfp_create_sdp_record(service, service_record_handle, SDP_HandsfreeAudioGateway, rfcomm_channel_nr, name); 176 177 /* 178 * 0x01 – Ability to reject a call 179 * 0x00 – No ability to reject a call 180 */ 181 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 182 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 183 184 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 185 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 186 } 187 188 static int hfp_ag_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 189 char buffer[20]; 190 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 191 return send_str_over_rfcomm(cid, buffer); 192 } 193 194 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 195 char buffer[40]; 196 sprintf(buffer, "\r\n%s:%d\r\n\r\nOK\r\n", HFP_SUPPORTED_FEATURES, hfp_supported_features); 197 return send_str_over_rfcomm(cid, buffer); 198 } 199 200 static int hfp_ag_ok(uint16_t cid){ 201 char buffer[10]; 202 sprintf(buffer, "\r\nOK\r\n"); 203 return send_str_over_rfcomm(cid, buffer); 204 } 205 206 static int hfp_ag_ring(uint16_t cid){ 207 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 208 } 209 210 static int hfp_ag_send_clip(uint16_t cid){ 211 char buffer[50]; 212 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 213 return send_str_over_rfcomm(cid, buffer); 214 } 215 216 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 217 char buffer[50]; 218 sprintf(buffer, "\r\n%s: ,\"%s\",%u, , \r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 219 return send_str_over_rfcomm(cid, buffer); 220 } 221 222 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 223 char buffer[50]; 224 sprintf(buffer, "\r\n%s: %s\r\n", HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 225 return send_str_over_rfcomm(cid, buffer); 226 } 227 228 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 229 char buffer[50]; 230 sprintf(buffer, "\r\n+CCWA: \"%s\",%u\r\n", hfp_gsm_clip_number(), hfp_gsm_clip_type()); 231 return send_str_over_rfcomm(cid, buffer); 232 } 233 234 static int hfp_ag_error(uint16_t cid){ 235 char buffer[10]; 236 sprintf(buffer, "\r\nERROR\r\n"); 237 return send_str_over_rfcomm(cid, buffer); 238 } 239 240 static int hfp_ag_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 241 char buffer[20]; 242 sprintf(buffer, "\r\n%s=%d\r\n", HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 243 return send_str_over_rfcomm(cid, buffer); 244 } 245 246 // fast & small implementation for fixed int size 247 static int string_len_for_uint32(uint32_t i){ 248 if (i < 10) return 1; 249 if (i < 100) return 2; 250 if (i < 1000) return 3; 251 if (i < 10000) return 4; 252 if (i < 100000) return 5; 253 if (i < 1000000) return 6; 254 if (i < 10000000) return 7; 255 if (i < 100000000) return 8; 256 if (i < 1000000000) return 9; 257 return 10; 258 } 259 260 // get size for indicator string 261 static int hfp_ag_indicators_string_size(hfp_connection_t * context, int i){ 262 // template: ("$NAME",($MIN,$MAX)) 263 return 8 + strlen(get_hfp_ag_indicators(context)[i].name) 264 + string_len_for_uint32(get_hfp_ag_indicators(context)[i].min_range) 265 + string_len_for_uint32(get_hfp_ag_indicators(context)[i].min_range); 266 } 267 268 // store indicator 269 static void hfp_ag_indicators_string_store(hfp_connection_t * context, int i, uint8_t * buffer){ 270 sprintf((char *) buffer, "(\"%s\",(%d,%d)),", 271 get_hfp_ag_indicators(context)[i].name, 272 get_hfp_ag_indicators(context)[i].min_range, 273 get_hfp_ag_indicators(context)[i].max_range); 274 } 275 276 // structure: header [indicator [comma indicator]] footer 277 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * context){ 278 int num_indicators = get_hfp_ag_indicators_nr(context); 279 if (!num_indicators) return 2; 280 return 3 + (num_indicators-1) * 2; 281 } 282 283 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 284 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * context, int index){ 285 if (index == 0) { 286 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 287 } 288 index--; 289 int num_indicators = get_hfp_ag_indicators_nr(context); 290 int indicator_index = index >> 1; 291 if ((index & 1) == 0){ 292 return hfp_ag_indicators_string_size(context, indicator_index); 293 } 294 if (indicator_index == num_indicators - 1){ 295 return 8; // "\r\n\r\nOK\r\n" 296 } 297 return 1; // comma 298 } 299 300 static void hgp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * context, int index, uint8_t * buffer){ 301 if (index == 0){ 302 *buffer++ = '\r'; 303 *buffer++ = '\n'; 304 int len = strlen(HFP_INDICATOR); 305 memcpy(buffer, HFP_INDICATOR, len); 306 buffer += len; 307 *buffer++ = ':'; 308 return; 309 } 310 index--; 311 int num_indicators = get_hfp_ag_indicators_nr(context); 312 int indicator_index = index >> 1; 313 if ((index & 1) == 0){ 314 hfp_ag_indicators_string_store(context, indicator_index, buffer); 315 return; 316 } 317 if (indicator_index == num_indicators-1){ 318 memcpy(buffer, "\r\n\r\nOK\r\n", 8); 319 return; 320 } 321 *buffer = ','; 322 } 323 324 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 325 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 326 int i; 327 int offset = 0; 328 for (i = 0; i < get_hfp_generic_status_indicators_nr()-1; i++) { 329 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", get_hfp_generic_status_indicators()[i].uuid); 330 } 331 if (i < get_hfp_generic_status_indicators_nr()){ 332 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", get_hfp_generic_status_indicators()[i].uuid); 333 } 334 return offset; 335 } 336 337 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 338 if (buffer_size < get_hfp_generic_status_indicators_nr() * 3) return 0; 339 int i; 340 int offset = 0; 341 for (i = 0; i < get_hfp_generic_status_indicators_nr(); i++) { 342 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); 343 } 344 return offset; 345 } 346 347 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 348 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 349 int i; 350 int offset = 0; 351 for (i = 0; i < hfp_ag_indicators_nr-1; i++) { 352 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 353 } 354 if (i<hfp_ag_indicators_nr){ 355 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 356 } 357 return offset; 358 } 359 360 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 361 if (buffer_size < hfp_ag_call_hold_services_nr * 3) return 0; 362 int i; 363 int offset = snprintf(buffer, buffer_size, "("); 364 for (i = 0; i < hfp_ag_call_hold_services_nr-1; i++) { 365 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 366 } 367 if (i<hfp_ag_call_hold_services_nr){ 368 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 369 } 370 return offset; 371 } 372 373 static int hfp_ag_cmd_via_generator(uint16_t cid, hfp_connection_t * context, 374 int start_segment, int num_segments, 375 int (*get_segment_len)(hfp_connection_t * context, int segment), 376 void (*store_segment) (hfp_connection_t * context, int segment, uint8_t * buffer)){ 377 378 // assumes: can send now == true 379 // assumes: num segments > 0 380 rfcomm_reserve_packet_buffer(); 381 int mtu = rfcomm_get_max_frame_size(cid); 382 uint8_t * data = rfcomm_get_outgoing_buffer(); 383 int offset = 0; 384 int segment = start_segment; 385 while (segment < num_segments){ 386 int segment_len = get_segment_len(context, segment); 387 if (offset + segment_len <= mtu){ 388 store_segment(context, segment, data+offset); 389 offset += segment_len; 390 segment++; 391 } 392 } 393 rfcomm_send_prepared(cid, offset); 394 return segment; 395 } 396 397 // returns next segment to store 398 static int hfp_ag_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * context, int start_segment){ 399 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(context); 400 return hfp_ag_cmd_via_generator(cid, context, start_segment, num_segments, 401 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 402 } 403 404 static int hfp_ag_retrieve_indicators_status_cmd(uint16_t cid){ 405 char buffer[40]; 406 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_INDICATOR); 407 offset += hfp_ag_indicators_status_join(buffer+offset, sizeof(buffer)-offset); 408 409 buffer[offset] = 0; 410 411 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 412 buffer[offset] = 0; 413 return send_str_over_rfcomm(cid, buffer); 414 } 415 416 static int hfp_ag_set_indicator_status_update_cmd(uint16_t cid, uint8_t activate){ 417 // AT\r\n%s:3,0,0,%d\r\n 418 return hfp_ag_ok(cid); 419 } 420 421 422 static int hfp_ag_retrieve_can_hold_call_cmd(uint16_t cid){ 423 char buffer[40]; 424 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 425 offset += hfp_ag_call_services_join(buffer+offset, sizeof(buffer)-offset); 426 427 buffer[offset] = 0; 428 429 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 430 buffer[offset] = 0; 431 return send_str_over_rfcomm(cid, buffer); 432 } 433 434 435 static int hfp_ag_list_supported_generic_status_indicators_cmd(uint16_t cid){ 436 return hfp_ag_ok(cid); 437 } 438 439 static int hfp_ag_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 440 char buffer[40]; 441 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 442 offset += hfp_hf_indicators_join(buffer+offset, sizeof(buffer)-offset); 443 444 buffer[offset] = 0; 445 446 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ")\r\n\r\nOK\r\n"); 447 buffer[offset] = 0; 448 return send_str_over_rfcomm(cid, buffer); 449 } 450 451 static int hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 452 char buffer[40]; 453 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer)); 454 455 buffer[offset] = 0; 456 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 457 buffer[offset] = 0; 458 return send_str_over_rfcomm(cid, buffer); 459 } 460 461 static int hfp_ag_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 462 char buffer[20]; 463 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 464 return send_str_over_rfcomm(cid, buffer); 465 } 466 467 static int hfp_ag_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 468 char buffer[40]; 469 if (strlen(op.name) == 0){ 470 sprintf(buffer, "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 471 } else { 472 sprintf(buffer, "\r\n%s:%d,%d,%s\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format, op.name); 473 } 474 return send_str_over_rfcomm(cid, buffer); 475 } 476 477 478 static int hfp_ag_cmd_suggest_codec(uint16_t cid, uint8_t codec){ 479 char buffer[30]; 480 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CONFIRM_COMMON_CODEC, codec); 481 return send_str_over_rfcomm(cid, buffer); 482 } 483 484 static int hfp_ag_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 485 char buffer[30]; 486 sprintf(buffer, "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 487 return send_str_over_rfcomm(cid, buffer); 488 } 489 490 static int hfp_ag_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 491 char buffer[30]; 492 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_SPEAKER_GAIN, gain); 493 return send_str_over_rfcomm(cid, buffer); 494 } 495 496 static int hfp_ag_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 497 char buffer[30]; 498 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_MICROPHONE_GAIN, gain); 499 return send_str_over_rfcomm(cid, buffer); 500 } 501 502 static int hfp_ag_set_response_and_hold(uint16_t cid, int state){ 503 char buffer[30]; 504 sprintf(buffer, "\r\n%s: %d\r\n", HFP_RESPONSE_AND_HOLD, state); 505 return send_str_over_rfcomm(cid, buffer); 506 } 507 508 509 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *context){ 510 int i,j; 511 uint8_t codec = HFP_CODEC_CVSD; 512 for (i = 0; i < hfp_codecs_nr; i++){ 513 for (j = 0; j < context->remote_codecs_nr; j++){ 514 if (context->remote_codecs[j] == hfp_codecs[i]){ 515 codec = context->remote_codecs[j]; 516 continue; 517 } 518 } 519 } 520 return codec; 521 } 522 523 static int codecs_exchange_state_machine(hfp_connection_t * context){ 524 /* events ( == commands): 525 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 526 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 527 hf_trigger_codec_connection_setup == received BCC 528 ag_trigger_codec_connection_setup == received from AG to send BCS 529 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 530 */ 531 532 switch (context->codecs_state){ 533 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 534 context->command = HFP_CMD_AG_SEND_COMMON_CODEC; 535 break; 536 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 537 context->command = HFP_CMD_AG_SEND_COMMON_CODEC; 538 break; 539 default: 540 break; 541 } 542 543 // printf(" -> State machine: CC\n"); 544 545 switch (context->command){ 546 case HFP_CMD_AVAILABLE_CODECS: 547 //printf("HFP_CODECS_RECEIVED_LIST \n"); 548 if (context->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 549 context->codecs_state = HFP_CODECS_RECEIVED_LIST; 550 hfp_ag_ok(context->rfcomm_cid); 551 return 1; 552 } 553 554 switch (context->codecs_state){ 555 case HFP_CODECS_AG_SENT_COMMON_CODEC: 556 case HFP_CODECS_EXCHANGED: 557 context->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 558 break; 559 default: 560 break; 561 } 562 hfp_ag_ok(context->rfcomm_cid); 563 return 1; 564 565 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 566 //printf(" HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP \n"); 567 context->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 568 hfp_ag_ok(context->rfcomm_cid); 569 return 1; 570 571 case HFP_CMD_AG_SEND_COMMON_CODEC: 572 //printf(" HFP_CMD_AG_SEND_COMMON_CODEC \n"); 573 context->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 574 context->suggested_codec = hfp_ag_suggest_codec(context); 575 hfp_ag_cmd_suggest_codec(context->rfcomm_cid, context->suggested_codec); 576 return 1; 577 578 case HFP_CMD_HF_CONFIRMED_CODEC: 579 //printf("HFP_CMD_HF_CONFIRMED_CODEC \n"); 580 if (context->codec_confirmed != context->suggested_codec){ 581 context->codecs_state = HFP_CODECS_ERROR; 582 hfp_ag_error(context->rfcomm_cid); 583 return 1; 584 } 585 context->negotiated_codec = context->codec_confirmed; 586 context->codecs_state = HFP_CODECS_EXCHANGED; 587 hfp_emit_event(hfp_callback, HFP_SUBEVENT_CODECS_CONNECTION_COMPLETE, 0); 588 hfp_ag_ok(context->rfcomm_cid); 589 return 1; 590 default: 591 break; 592 } 593 return 0; 594 } 595 596 static void hfp_init_link_settings(hfp_connection_t * context){ 597 // determine highest possible link setting 598 context->link_setting = HFP_LINK_SETTINGS_D1; 599 if (hci_remote_eSCO_supported(context->con_handle)){ 600 context->link_setting = HFP_LINK_SETTINGS_S3; 601 if ((context->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) 602 && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4))){ 603 context->link_setting = HFP_LINK_SETTINGS_S4; 604 } 605 } 606 } 607 608 static void hfp_ag_slc_established(hfp_connection_t * context){ 609 context->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 610 hfp_emit_event(hfp_callback, HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED, 0); 611 612 hfp_init_link_settings(context); 613 614 // if active call exist, set per-connection state active, too (when audio is on) 615 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 616 context->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 617 } 618 // if AG is ringing, also start ringing on the HF 619 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS && 620 hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 621 hfp_ag_hf_start_ringing(context); 622 } 623 } 624 625 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * context){ 626 if (context->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 627 int done = 0; 628 // printf(" -> State machine: SLC\n"); 629 switch(context->command){ 630 case HFP_CMD_SUPPORTED_FEATURES: 631 switch(context->state){ 632 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 633 case HFP_EXCHANGE_SUPPORTED_FEATURES: 634 if (has_codec_negotiation_feature(context)){ 635 context->state = HFP_W4_NOTIFY_ON_CODECS; 636 } else { 637 context->state = HFP_W4_RETRIEVE_INDICATORS; 638 } 639 hfp_ag_exchange_supported_features_cmd(context->rfcomm_cid); 640 return 1; 641 default: 642 break; 643 } 644 break; 645 case HFP_CMD_AVAILABLE_CODECS: 646 done = codecs_exchange_state_machine(context); 647 648 if (context->codecs_state == HFP_CODECS_RECEIVED_LIST){ 649 context->state = HFP_W4_RETRIEVE_INDICATORS; 650 } 651 return done; 652 653 case HFP_CMD_RETRIEVE_AG_INDICATORS: 654 if (context->state == HFP_W4_RETRIEVE_INDICATORS) { 655 context->command = HFP_CMD_NONE; // prevent reentrance 656 int next_segment = hfp_ag_retrieve_indicators_cmd_via_generator(context->rfcomm_cid, context, context->send_ag_indicators_segment); 657 if (next_segment < hfp_ag_indicators_cmd_generator_num_segments(context)){ 658 // prepare sending of next segment 659 context->send_ag_indicators_segment = next_segment; 660 context->command = HFP_CMD_RETRIEVE_AG_INDICATORS; 661 } else { 662 // done, go to next state 663 context->send_ag_indicators_segment = 0; 664 context->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 665 } 666 return 1; 667 } 668 break; 669 670 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 671 if (context->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 672 context->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 673 hfp_ag_retrieve_indicators_status_cmd(context->rfcomm_cid); 674 return 1; 675 676 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 677 if (context->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 678 if (has_call_waiting_and_3way_calling_feature(context)){ 679 context->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 680 } else if (has_hf_indicators_feature(context)){ 681 context->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 682 } else { 683 hfp_ag_slc_established(context); 684 } 685 hfp_ag_set_indicator_status_update_cmd(context->rfcomm_cid, 1); 686 return 1; 687 688 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 689 if (context->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 690 if (has_hf_indicators_feature(context)){ 691 context->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 692 } 693 hfp_ag_retrieve_can_hold_call_cmd(context->rfcomm_cid); 694 if (!has_hf_indicators_feature(context)){ 695 hfp_ag_slc_established(context); 696 } 697 return 1; 698 699 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 700 if (context->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 701 context->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 702 hfp_ag_list_supported_generic_status_indicators_cmd(context->rfcomm_cid); 703 return 1; 704 705 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 706 if (context->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 707 context->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 708 hfp_ag_retrieve_supported_generic_status_indicators_cmd(context->rfcomm_cid); 709 return 1; 710 711 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 712 if (context->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 713 hfp_ag_slc_established(context); 714 hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(context->rfcomm_cid); 715 return 1; 716 default: 717 break; 718 } 719 return done; 720 } 721 722 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * context){ 723 // if (context->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 724 725 int done = codecs_exchange_state_machine(context); 726 if (done) return done; 727 728 // printf(" -> State machine: SLC Queries\n"); 729 switch(context->command){ 730 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 731 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, context->ag_activate_voice_recognition); 732 hfp_ag_activate_voice_recognition_cmd(context->rfcomm_cid, context->ag_activate_voice_recognition); 733 return 1; 734 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 735 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 736 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, context->ag_activate_voice_recognition); 737 hfp_ag_ok(context->rfcomm_cid); 738 hfp_ag_setup_audio_connection(context); 739 } else { 740 hfp_ag_error(context->rfcomm_cid); 741 } 742 return 1; 743 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 744 hfp_ag_change_in_band_ring_tone_setting_cmd(context->rfcomm_cid); 745 return 1; 746 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 747 hfp_ag_report_network_operator_name_cmd(context->rfcomm_cid, context->network_operator); 748 return 1; 749 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 750 if (context->network_operator.format != 0){ 751 hfp_ag_error(context->rfcomm_cid); 752 } else { 753 hfp_ag_ok(context->rfcomm_cid); 754 } 755 return 1; 756 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 757 hfp_ag_ok(context->rfcomm_cid); 758 return 1; 759 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 760 if (context->extended_audio_gateway_error){ 761 context->extended_audio_gateway_error = 0; 762 hfp_ag_report_extended_audio_gateway_error(context->rfcomm_cid, context->extended_audio_gateway_error); 763 return 1; 764 } 765 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 766 hfp_ag_ok(context->rfcomm_cid); 767 return 1; 768 default: 769 break; 770 } 771 return 0; 772 } 773 774 static int hfp_ag_run_for_audio_connection(hfp_connection_t * context){ 775 if (context->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 776 context->state > HFP_W2_DISCONNECT_SCO) return 0; 777 778 779 if (context->state == HFP_AUDIO_CONNECTION_ESTABLISHED && context->release_audio_connection){ 780 context->state = HFP_W4_SCO_DISCONNECTED; 781 context->release_audio_connection = 0; 782 gap_disconnect(context->sco_handle); 783 return 1; 784 } 785 786 if (context->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 787 788 // run codecs exchange 789 int done = codecs_exchange_state_machine(context); 790 if (done) return done; 791 // printf(" -> State machine: Audio Connection\n"); 792 793 if (context->codecs_state != HFP_CODECS_EXCHANGED) return done; 794 if (context->establish_audio_connection){ 795 context->state = HFP_W4_SCO_CONNECTED; 796 context->establish_audio_connection = 0; 797 hfp_setup_synchronous_connection(context->con_handle, context->link_setting); 798 return 1; 799 } 800 return 0; 801 } 802 803 static hfp_connection_t * hfp_ag_context_for_timer(timer_source_t * ts){ 804 btstack_linked_list_iterator_t it; 805 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 806 807 while (btstack_linked_list_iterator_has_next(&it)){ 808 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 809 if ( &connection->hfp_timeout == ts) { 810 return connection; 811 } 812 } 813 return NULL; 814 } 815 816 static void hfp_timeout_handler(timer_source_t * timer){ 817 hfp_connection_t * context = hfp_ag_context_for_timer(timer); 818 if (!context) return; 819 820 log_info("HFP start ring timeout, con handle 0x%02x", context->con_handle); 821 context->ag_ring = 1; 822 context->ag_send_clip = hfp_gsm_clip_type() && context->clip_enabled; 823 824 run_loop_set_timer(&context->hfp_timeout, 2000); // 5 seconds timeout 825 run_loop_add_timer(&context->hfp_timeout); 826 827 hfp_run_for_context(context); 828 } 829 830 static void hfp_timeout_start(hfp_connection_t * context){ 831 run_loop_remove_timer(&context->hfp_timeout); 832 run_loop_set_timer_handler(&context->hfp_timeout, hfp_timeout_handler); 833 run_loop_set_timer(&context->hfp_timeout, 2000); // 5 seconds timeout 834 run_loop_add_timer(&context->hfp_timeout); 835 } 836 837 static void hfp_timeout_stop(hfp_connection_t * context){ 838 log_info("HFP stop ring timeout, con handle 0x%02x", context->con_handle); 839 run_loop_remove_timer(&context->hfp_timeout); 840 } 841 842 // 843 // transitition implementations for hfp_ag_call_state_machine 844 // 845 846 static void hfp_ag_hf_start_ringing(hfp_connection_t * context){ 847 if (use_in_band_tone()){ 848 context->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 849 hfp_ag_establish_audio_connection(context->remote_addr); 850 } else { 851 hfp_timeout_start(context); 852 context->ag_ring = 1; 853 context->ag_send_clip = hfp_gsm_clip_type() && context->clip_enabled; 854 context->call_state = HFP_CALL_RINGING; 855 hfp_emit_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG, 0); 856 } 857 } 858 859 static void hfp_ag_hf_stop_ringing(hfp_connection_t * context){ 860 context->ag_ring = 0; 861 context->ag_send_clip = 0; 862 hfp_timeout_stop(context); 863 hfp_emit_event(hfp_callback, HFP_SUBEVENT_STOP_RINGINIG, 0); 864 } 865 866 static void hfp_ag_trigger_incoming_call(void){ 867 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 868 if (indicator_index < 0) return; 869 870 btstack_linked_list_iterator_t it; 871 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 872 while (btstack_linked_list_iterator_has_next(&it)){ 873 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 874 hfp_ag_establish_service_level_connection(connection->remote_addr); 875 if (connection->call_state == HFP_CALL_IDLE){ 876 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, indicator_index, 1); 877 hfp_ag_hf_start_ringing(connection); 878 } 879 if (connection->call_state == HFP_CALL_ACTIVE){ 880 connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 881 } 882 hfp_run_for_context(connection); 883 } 884 } 885 886 static void hfp_ag_transfer_callsetup_state(void){ 887 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 888 if (indicator_index < 0) return; 889 890 btstack_linked_list_iterator_t it; 891 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 892 while (btstack_linked_list_iterator_has_next(&it)){ 893 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 894 hfp_ag_establish_service_level_connection(connection->remote_addr); 895 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, indicator_index, 1); 896 hfp_run_for_context(connection); 897 } 898 } 899 900 static void hfp_ag_transfer_call_state(void){ 901 int indicator_index = get_ag_indicator_index_for_name("call"); 902 if (indicator_index < 0) return; 903 904 btstack_linked_list_iterator_t it; 905 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 906 while (btstack_linked_list_iterator_has_next(&it)){ 907 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 908 hfp_ag_establish_service_level_connection(connection->remote_addr); 909 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, indicator_index, 1); 910 hfp_run_for_context(connection); 911 } 912 } 913 914 static void hfp_ag_transfer_callheld_state(void){ 915 int indicator_index = get_ag_indicator_index_for_name("callheld"); 916 if (indicator_index < 0) return; 917 918 btstack_linked_list_iterator_t it; 919 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 920 while (btstack_linked_list_iterator_has_next(&it)){ 921 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 922 hfp_ag_establish_service_level_connection(connection->remote_addr); 923 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, indicator_index, 1); 924 hfp_run_for_context(connection); 925 } 926 } 927 928 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 929 930 int call_indicator_index = get_ag_indicator_index_for_name("call"); 931 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 932 933 btstack_linked_list_iterator_t it; 934 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 935 while (btstack_linked_list_iterator_has_next(&it)){ 936 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 937 if (connection->call_state != HFP_CALL_RINGING && 938 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 939 940 hfp_ag_hf_stop_ringing(connection); 941 if (connection == source){ 942 connection->ok_pending = 1; 943 944 if (use_in_band_tone()){ 945 connection->call_state = HFP_CALL_ACTIVE; 946 } else { 947 connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 948 hfp_ag_establish_audio_connection(connection->remote_addr); 949 } 950 951 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 952 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 953 954 } else { 955 connection->call_state = HFP_CALL_IDLE; 956 } 957 hfp_run_for_context(connection); 958 } 959 } 960 961 static void hfp_ag_ag_accept_call(void){ 962 963 int call_indicator_index = get_ag_indicator_index_for_name("call"); 964 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 965 966 btstack_linked_list_iterator_t it; 967 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 968 while (btstack_linked_list_iterator_has_next(&it)){ 969 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 970 if (connection->call_state != HFP_CALL_RINGING) continue; 971 972 hfp_ag_hf_stop_ringing(connection); 973 connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 974 975 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 976 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 977 978 hfp_run_for_context(connection); 979 break; // only single 980 } 981 } 982 983 static void hfp_ag_trigger_reject_call(void){ 984 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 985 btstack_linked_list_iterator_t it; 986 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 987 while (btstack_linked_list_iterator_has_next(&it)){ 988 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 989 if (connection->call_state != HFP_CALL_RINGING && 990 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 991 hfp_ag_hf_stop_ringing(connection); 992 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 993 connection->call_state = HFP_CALL_IDLE; 994 hfp_run_for_context(connection); 995 } 996 } 997 998 static void hfp_ag_trigger_terminate_call(void){ 999 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1000 1001 btstack_linked_list_iterator_t it; 1002 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1003 while (btstack_linked_list_iterator_has_next(&it)){ 1004 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1005 hfp_ag_establish_service_level_connection(connection->remote_addr); 1006 if (connection->call_state == HFP_CALL_IDLE) continue; 1007 connection->call_state = HFP_CALL_IDLE; 1008 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1009 connection->release_audio_connection = 1; 1010 hfp_run_for_context(connection); 1011 } 1012 hfp_emit_event(hfp_callback, HFP_SUBEVENT_CALL_TERMINATED, 0); 1013 } 1014 1015 static void hfp_ag_set_callsetup_indicator(){ 1016 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1017 if (!indicator){ 1018 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1019 }; 1020 indicator->status = hfp_gsm_callsetup_status(); 1021 } 1022 1023 static void hfp_ag_set_callheld_indicator(){ 1024 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1025 if (!indicator){ 1026 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1027 }; 1028 indicator->status = hfp_gsm_callheld_status(); 1029 } 1030 1031 static void hfp_ag_set_call_indicator(){ 1032 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1033 if (!indicator){ 1034 log_error("hfp_ag_set_call_state: call indicator is missing"); 1035 }; 1036 indicator->status = hfp_gsm_call_status(); 1037 } 1038 1039 static void hfp_ag_stop_ringing(void){ 1040 btstack_linked_list_iterator_t it; 1041 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1042 while (btstack_linked_list_iterator_has_next(&it)){ 1043 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1044 if (connection->call_state != HFP_CALL_RINGING && 1045 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1046 hfp_ag_hf_stop_ringing(connection); 1047 } 1048 } 1049 1050 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1051 btstack_linked_list_iterator_t it; 1052 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1053 while (btstack_linked_list_iterator_has_next(&it)){ 1054 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1055 if (connection->call_state == call_state) return connection; 1056 } 1057 return NULL; 1058 } 1059 1060 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1061 btstack_linked_list_iterator_t it; 1062 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1063 while (btstack_linked_list_iterator_has_next(&it)){ 1064 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1065 connection->send_response_and_hold_status = state + 1; 1066 } 1067 } 1068 1069 static int call_setup_state_machine(hfp_connection_t * connection){ 1070 int indicator_index; 1071 switch (connection->call_state){ 1072 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1073 if (connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1074 // we got event: audio connection established 1075 hfp_timeout_start(connection); 1076 connection->ag_ring = 1; 1077 connection->ag_send_clip = hfp_gsm_clip_type() && connection->clip_enabled; 1078 connection->call_state = HFP_CALL_RINGING; 1079 connection->call_state = HFP_CALL_RINGING; 1080 hfp_emit_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG, 0); 1081 break; 1082 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1083 if (connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1084 // we got event: audio connection established 1085 connection->call_state = HFP_CALL_ACTIVE; 1086 break; 1087 case HFP_CALL_W2_SEND_CALL_WAITING: 1088 connection->call_state = HFP_CALL_W4_CHLD; 1089 hfp_ag_send_call_waiting_notification(connection->rfcomm_cid); 1090 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1091 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1092 break; 1093 default: 1094 break; 1095 } 1096 return 0; 1097 } 1098 // connection is used to identify originating HF 1099 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * connection){ 1100 int indicator_index; 1101 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1102 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1103 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1104 1105 //printf("hfp_ag_call_sm event %d \n", event); 1106 switch (event){ 1107 case HFP_AG_INCOMING_CALL: 1108 switch (hfp_gsm_call_status()){ 1109 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1110 switch (hfp_gsm_callsetup_status()){ 1111 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1112 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1113 hfp_ag_set_callsetup_indicator(); 1114 hfp_ag_trigger_incoming_call(); 1115 printf("AG rings\n"); 1116 break; 1117 default: 1118 break; 1119 } 1120 break; 1121 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1122 switch (hfp_gsm_callsetup_status()){ 1123 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1124 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1125 hfp_ag_set_callsetup_indicator(); 1126 hfp_ag_trigger_incoming_call(); 1127 printf("AG call waiting\n"); 1128 break; 1129 default: 1130 break; 1131 } 1132 break; 1133 } 1134 break; 1135 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1136 switch (hfp_gsm_call_status()){ 1137 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1138 switch (hfp_gsm_callsetup_status()){ 1139 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1140 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1141 hfp_ag_set_call_indicator(); 1142 hfp_ag_set_callsetup_indicator(); 1143 hfp_ag_ag_accept_call(); 1144 printf("AG answers call, accept call by GSM\n"); 1145 break; 1146 default: 1147 break; 1148 } 1149 break; 1150 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1151 switch (hfp_gsm_callsetup_status()){ 1152 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1153 printf("AG: current call is placed on hold, incoming call gets active\n"); 1154 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1155 hfp_ag_set_callsetup_indicator(); 1156 hfp_ag_set_callheld_indicator(); 1157 hfp_ag_transfer_callsetup_state(); 1158 hfp_ag_transfer_callheld_state(); 1159 break; 1160 default: 1161 break; 1162 } 1163 break; 1164 } 1165 break; 1166 1167 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1168 switch (hfp_gsm_call_status()){ 1169 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1170 switch (hfp_gsm_callheld_status()){ 1171 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1172 printf("AG: joining held call with active call\n"); 1173 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1174 hfp_ag_set_callheld_indicator(); 1175 hfp_ag_transfer_callheld_state(); 1176 hfp_emit_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL, 0); 1177 break; 1178 default: 1179 break; 1180 } 1181 break; 1182 default: 1183 break; 1184 } 1185 break; 1186 1187 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1188 switch (hfp_gsm_call_status()){ 1189 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1190 switch (hfp_gsm_callsetup_status()){ 1191 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1192 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1193 hfp_ag_set_callsetup_indicator(); 1194 hfp_ag_set_call_indicator(); 1195 hfp_ag_hf_accept_call(connection); 1196 printf("HF answers call, accept call by GSM\n"); 1197 hfp_emit_event(hfp_callback, HFP_CMD_CALL_ANSWERED, 0); 1198 break; 1199 default: 1200 break; 1201 } 1202 break; 1203 default: 1204 break; 1205 } 1206 break; 1207 1208 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1209 switch (hfp_gsm_call_status()){ 1210 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1211 switch (hfp_gsm_callsetup_status()){ 1212 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1213 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1214 hfp_ag_response_and_hold_active = 1; 1215 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1216 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1217 // as with regualr call 1218 hfp_ag_set_call_indicator(); 1219 hfp_ag_set_callsetup_indicator(); 1220 hfp_ag_ag_accept_call(); 1221 printf("AG response and hold - hold by AG\n"); 1222 break; 1223 default: 1224 break; 1225 } 1226 break; 1227 default: 1228 break; 1229 } 1230 break; 1231 1232 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1233 switch (hfp_gsm_call_status()){ 1234 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1235 switch (hfp_gsm_callsetup_status()){ 1236 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1237 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1238 hfp_ag_response_and_hold_active = 1; 1239 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1240 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1241 // as with regualr call 1242 hfp_ag_set_call_indicator(); 1243 hfp_ag_set_callsetup_indicator(); 1244 hfp_ag_hf_accept_call(connection); 1245 printf("AG response and hold - hold by HF\n"); 1246 break; 1247 default: 1248 break; 1249 } 1250 break; 1251 default: 1252 break; 1253 } 1254 break; 1255 1256 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1257 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1258 if (!hfp_ag_response_and_hold_active) break; 1259 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1260 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1261 hfp_ag_response_and_hold_active = 0; 1262 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1263 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1264 printf("Held Call accepted and active\n"); 1265 break; 1266 1267 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1268 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1269 if (!hfp_ag_response_and_hold_active) break; 1270 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1271 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1272 hfp_ag_response_and_hold_active = 0; 1273 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1274 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1275 // from terminate by ag 1276 hfp_ag_set_call_indicator(); 1277 hfp_ag_trigger_terminate_call(); 1278 break; 1279 1280 case HFP_AG_TERMINATE_CALL_BY_HF: 1281 switch (hfp_gsm_call_status()){ 1282 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1283 switch (hfp_gsm_callsetup_status()){ 1284 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1285 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1286 hfp_ag_set_callsetup_indicator(); 1287 hfp_ag_transfer_callsetup_state(); 1288 hfp_ag_trigger_reject_call(); 1289 printf("HF Rejected Incoming call, AG terminate call\n"); 1290 break; 1291 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1292 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1293 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1294 hfp_ag_set_callsetup_indicator(); 1295 hfp_ag_transfer_callsetup_state(); 1296 printf("AG terminate outgoing call process\n"); 1297 default: 1298 break; 1299 } 1300 break; 1301 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1302 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1303 hfp_ag_set_call_indicator(); 1304 hfp_ag_transfer_call_state(); 1305 connection->call_state = HFP_CALL_IDLE; 1306 printf("AG terminate call\n"); 1307 break; 1308 } 1309 break; 1310 1311 case HFP_AG_TERMINATE_CALL_BY_AG: 1312 switch (hfp_gsm_call_status()){ 1313 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1314 switch (hfp_gsm_callsetup_status()){ 1315 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1316 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1317 hfp_ag_set_callsetup_indicator(); 1318 hfp_ag_trigger_reject_call(); 1319 printf("AG Rejected Incoming call, AG terminate call\n"); 1320 break; 1321 default: 1322 break; 1323 } 1324 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1325 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1326 hfp_ag_set_callsetup_indicator(); 1327 hfp_ag_set_call_indicator(); 1328 hfp_ag_trigger_terminate_call(); 1329 printf("AG terminate call\n"); 1330 break; 1331 default: 1332 break; 1333 } 1334 break; 1335 case HFP_AG_CALL_DROPPED: 1336 switch (hfp_gsm_call_status()){ 1337 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1338 switch (hfp_gsm_callsetup_status()){ 1339 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1340 hfp_ag_stop_ringing(); 1341 printf("Incoming call interrupted\n"); 1342 break; 1343 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1344 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1345 printf("Outgoing call interrupted\n"); 1346 printf("AG notify call dropped\n"); 1347 break; 1348 default: 1349 break; 1350 } 1351 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1352 hfp_ag_set_callsetup_indicator(); 1353 hfp_ag_transfer_callsetup_state(); 1354 break; 1355 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1356 if (hfp_ag_response_and_hold_active) { 1357 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1358 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1359 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1360 } 1361 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1362 hfp_ag_set_callsetup_indicator(); 1363 hfp_ag_set_call_indicator(); 1364 hfp_ag_trigger_terminate_call(); 1365 printf("AG notify call dropped\n"); 1366 break; 1367 default: 1368 break; 1369 } 1370 break; 1371 1372 case HFP_AG_OUTGOING_CALL_INITIATED: 1373 // directly reject call if number of free slots is exceeded 1374 if (!hfp_gsm_call_possible()){ 1375 connection->send_error = 1; 1376 hfp_run_for_context(connection); 1377 break; 1378 } 1379 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_INITIATED); 1380 connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1381 1382 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &connection->line_buffer[3]); 1383 break; 1384 1385 case HFP_AG_OUTGOING_REDIAL_INITIATED: 1386 // directly reject call if number of free slots is exceeded 1387 if (!hfp_gsm_call_possible()){ 1388 connection->send_error = 1; 1389 hfp_run_for_context(connection); 1390 break; 1391 } 1392 1393 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1394 connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1395 1396 hfp_emit_event(hfp_callback, HFP_SUBEVENT_REDIAL_LAST_NUMBER, 0); 1397 break; 1398 1399 case HFP_AG_OUTGOING_CALL_REJECTED: 1400 connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1401 if (!connection){ 1402 log_info("hfp_ag_call_sm: did not find outgoing connection in initiated state"); 1403 break; 1404 } 1405 1406 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1407 connection->call_state = HFP_CALL_IDLE; 1408 connection->send_error = 1; 1409 hfp_run_for_context(connection); 1410 break; 1411 1412 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1413 connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1414 if (!connection){ 1415 log_info("hfp_ag_call_sm: did not find outgoing connection in initiated state"); 1416 break; 1417 } 1418 1419 connection->ok_pending = 1; 1420 connection->call_state = HFP_CALL_OUTGOING_DIALING; 1421 1422 // trigger callsetup to be 1423 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1424 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1425 1426 hfp_ag_set_callsetup_indicator(); 1427 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1428 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1429 1430 // put current call on hold if active 1431 if (put_call_on_hold){ 1432 printf("AG putting current call on hold for new outgoing call\n"); 1433 hfp_ag_set_callheld_indicator(); 1434 indicator_index = get_ag_indicator_index_for_name("callheld"); 1435 hfp_ag_transfer_ag_indicators_status_cmd(connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1436 } 1437 1438 // start audio if needed 1439 hfp_ag_establish_audio_connection(connection->remote_addr); 1440 break; 1441 } 1442 case HFP_AG_OUTGOING_CALL_RINGING: 1443 // hfp_gsm_handle_event(); 1444 connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1445 if (!connection){ 1446 log_info("hfp_ag_call_sm: did not find outgoing connection in dialing state"); 1447 break; 1448 } 1449 1450 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1451 connection->call_state = HFP_CALL_OUTGOING_RINGING; 1452 hfp_ag_set_callsetup_indicator(); 1453 hfp_ag_transfer_callsetup_state(); 1454 break; 1455 1456 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1457 // get outgoing call 1458 connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1459 if (!connection){ 1460 connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1461 } 1462 if (!connection){ 1463 log_info("hfp_ag_call_sm: did not find outgoing connection"); 1464 break; 1465 } 1466 1467 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1468 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1469 connection->call_state = HFP_CALL_ACTIVE; 1470 hfp_ag_set_callsetup_indicator(); 1471 hfp_ag_set_call_indicator(); 1472 hfp_ag_transfer_call_state(); 1473 hfp_ag_transfer_callsetup_state(); 1474 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1475 hfp_ag_set_callheld_indicator(); 1476 hfp_ag_transfer_callheld_state(); 1477 } 1478 break; 1479 } 1480 1481 case HFP_AG_CALL_HOLD_USER_BUSY: 1482 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1483 hfp_ag_set_callsetup_indicator(); 1484 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1485 connection->call_state = HFP_CALL_ACTIVE; 1486 printf("AG: Call Waiting, User Busy\n"); 1487 break; 1488 1489 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1490 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1491 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1492 1493 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1494 if (call_held || call_setup_in_progress){ 1495 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, connection->call_index); 1496 1497 } 1498 1499 if (call_setup_in_progress){ 1500 printf("AG: Call Dropped, Accept new call\n"); 1501 hfp_ag_set_callsetup_indicator(); 1502 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1503 } else { 1504 printf("AG: Call Dropped, Resume held call\n"); 1505 } 1506 if (call_held){ 1507 hfp_ag_set_callheld_indicator(); 1508 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1509 } 1510 1511 connection->call_state = HFP_CALL_ACTIVE; 1512 break; 1513 } 1514 1515 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1516 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1517 // only update if callsetup changed 1518 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1519 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, connection->call_index); 1520 1521 if (call_setup_in_progress){ 1522 printf("AG: Call on Hold, Accept new call\n"); 1523 hfp_ag_set_callsetup_indicator(); 1524 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1525 } else { 1526 printf("AG: Swap calls\n"); 1527 } 1528 1529 hfp_ag_set_callheld_indicator(); 1530 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1531 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1532 connection->call_state = HFP_CALL_ACTIVE; 1533 break; 1534 } 1535 1536 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1537 // Adds a held call to the conversation. 1538 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1539 printf("AG: Join 3-way-call\n"); 1540 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1541 hfp_ag_set_callheld_indicator(); 1542 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1543 hfp_emit_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL, 0); 1544 } 1545 connection->call_state = HFP_CALL_ACTIVE; 1546 break; 1547 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1548 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1549 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1550 printf("AG: Transfer call -> Connect two calls and disconnect\n"); 1551 hfp_ag_set_call_indicator(); 1552 hfp_ag_set_callheld_indicator(); 1553 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1554 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1555 connection->call_state = HFP_CALL_IDLE; 1556 break; 1557 1558 default: 1559 break; 1560 } 1561 1562 1563 } 1564 1565 static void hfp_run_for_context(hfp_connection_t *context){ 1566 if (!context) return; 1567 if (!rfcomm_can_send_packet_now(context->rfcomm_cid)) return; 1568 1569 if (context->send_status_of_current_calls){ 1570 hfp_emit_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_STATUS_OF_CURRENT_CALL, 0); 1571 return; 1572 } 1573 1574 if (context->command == HFP_CMD_UNKNOWN){ 1575 context->ok_pending = 0; 1576 context->send_error = 0; 1577 context->command = HFP_CMD_NONE; 1578 hfp_ag_error(context->rfcomm_cid); 1579 return; 1580 } 1581 1582 if (context->send_error){ 1583 context->send_error = 0; 1584 context->command = HFP_CMD_NONE; 1585 hfp_ag_error(context->rfcomm_cid); 1586 return; 1587 } 1588 1589 // note: before update AG indicators and ok_pending 1590 if (context->send_response_and_hold_status){ 1591 int status = context->send_response_and_hold_status - 1; 1592 context->send_response_and_hold_status = 0; 1593 hfp_ag_set_response_and_hold(context->rfcomm_cid, status); 1594 return; 1595 } 1596 1597 if (context->ok_pending){ 1598 context->ok_pending = 0; 1599 context->command = HFP_CMD_NONE; 1600 hfp_ag_ok(context->rfcomm_cid); 1601 return; 1602 } 1603 1604 // update AG indicators 1605 if (context->ag_indicators_status_update_bitmap){ 1606 int i; 1607 for (i=0;i<context->ag_indicators_nr;i++){ 1608 if (get_bit(context->ag_indicators_status_update_bitmap, i)){ 1609 context->ag_indicators_status_update_bitmap = store_bit(context->ag_indicators_status_update_bitmap, i, 0); 1610 if (!context->enable_status_update_for_ag_indicators) { 1611 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1612 break; 1613 } 1614 hfp_ag_transfer_ag_indicators_status_cmd(context->rfcomm_cid, &hfp_ag_indicators[i]); 1615 return; 1616 } 1617 } 1618 } 1619 1620 if (context->ag_ring){ 1621 context->ag_ring = 0; 1622 context->command = HFP_CMD_NONE; 1623 hfp_ag_ring(context->rfcomm_cid); 1624 return; 1625 } 1626 1627 if (context->ag_send_clip){ 1628 context->ag_send_clip = 0; 1629 context->command = HFP_CMD_NONE; 1630 hfp_ag_send_clip(context->rfcomm_cid); 1631 return; 1632 } 1633 1634 if (context->send_phone_number_for_voice_tag){ 1635 context->send_phone_number_for_voice_tag = 0; 1636 context->command = HFP_CMD_NONE; 1637 context->ok_pending = 1; 1638 hfp_ag_send_phone_number_for_voice_tag_cmd(context->rfcomm_cid); 1639 return; 1640 } 1641 1642 if (context->send_subscriber_number){ 1643 if (context->next_subscriber_number_to_send < subscriber_numbers_count){ 1644 hfp_phone_number_t phone = subscriber_numbers[context->next_subscriber_number_to_send++]; 1645 hfp_send_subscriber_number_cmd(context->rfcomm_cid, phone.type, phone.number); 1646 } else { 1647 context->send_subscriber_number = 0; 1648 context->next_subscriber_number_to_send = 0; 1649 hfp_ag_ok(context->rfcomm_cid); 1650 } 1651 context->command = HFP_CMD_NONE; 1652 } 1653 1654 if (context->send_microphone_gain){ 1655 context->send_microphone_gain = 0; 1656 context->command = HFP_CMD_NONE; 1657 hfp_ag_set_microphone_gain_cmd(context->rfcomm_cid, context->microphone_gain); 1658 return; 1659 } 1660 1661 if (context->send_speaker_gain){ 1662 context->send_speaker_gain = 0; 1663 context->command = HFP_CMD_NONE; 1664 hfp_ag_set_speaker_gain_cmd(context->rfcomm_cid, context->speaker_gain); 1665 return; 1666 } 1667 1668 if (context->send_ag_status_indicators){ 1669 context->send_ag_status_indicators = 0; 1670 hfp_ag_retrieve_indicators_status_cmd(context->rfcomm_cid); 1671 return; 1672 } 1673 1674 int done = hfp_ag_run_for_context_service_level_connection(context); 1675 if (!done){ 1676 done = hfp_ag_run_for_context_service_level_connection_queries(context); 1677 } 1678 1679 if (!done){ 1680 done = call_setup_state_machine(context); 1681 } 1682 1683 if (!done){ 1684 done = hfp_ag_run_for_audio_connection(context); 1685 } 1686 1687 if (context->command == HFP_CMD_NONE && !done){ 1688 // log_info("context->command == HFP_CMD_NONE"); 1689 switch(context->state){ 1690 case HFP_W2_DISCONNECT_RFCOMM: 1691 context->state = HFP_W4_RFCOMM_DISCONNECTED; 1692 rfcomm_disconnect_internal(context->rfcomm_cid); 1693 break; 1694 default: 1695 break; 1696 } 1697 } 1698 if (done){ 1699 context->command = HFP_CMD_NONE; 1700 } 1701 } 1702 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1703 int i; 1704 for (i=0;i< get_hfp_generic_status_indicators_nr();i++){ 1705 hfp_generic_status_indicator_t * indicator = &get_hfp_generic_status_indicators()[i]; 1706 if (indicator->uuid == number){ 1707 return indicator; 1708 } 1709 } 1710 return NULL; 1711 } 1712 1713 static void hfp_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1714 hfp_connection_t * context = get_hfp_connection_context_for_rfcomm_cid(channel); 1715 if (!context) return; 1716 1717 char last_char = packet[size-1]; 1718 packet[size-1] = 0; 1719 log_info("HFP_RX %s", packet); 1720 packet[size-1] = last_char; 1721 1722 int pos; 1723 for (pos = 0; pos < size ; pos++){ 1724 hfp_parse(context, packet[pos], 0); 1725 } 1726 hfp_generic_status_indicator_t * indicator; 1727 int value; 1728 switch(context->command){ 1729 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1730 if (hfp_ag_response_and_hold_active){ 1731 context->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1732 } 1733 context->ok_pending = 1; 1734 break; 1735 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1736 value = atoi((char *)&context->line_buffer[0]); 1737 printf("HF Response and Hold: %u\n", value); 1738 switch(value){ 1739 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1740 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, context); 1741 break; 1742 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1743 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, context); 1744 break; 1745 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1746 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, context); 1747 break; 1748 default: 1749 break; 1750 } 1751 context->ok_pending = 1; 1752 break; 1753 case HFP_CMD_HF_INDICATOR_STATUS: 1754 context->command = HFP_CMD_NONE; 1755 // find indicator by assigned number 1756 indicator = get_hf_indicator_by_number(context->parser_indicator_index); 1757 if (!indicator){ 1758 context->send_error = 1; 1759 break; 1760 } 1761 value = atoi((char *)&context->line_buffer[0]); 1762 switch (indicator->uuid){ 1763 case 1: // enhanced security 1764 if (value > 1) { 1765 context->send_error = 1; 1766 return; 1767 } 1768 printf("HF Indicator 'enhanced security' set to %u\n", value); 1769 break; 1770 case 2: // battery level 1771 if (value > 100){ 1772 context->send_error = 1; 1773 return; 1774 } 1775 printf("HF Indicator 'battery' set to %u\n", value); 1776 break; 1777 default: 1778 printf("HF Indicator unknown set to %u\n", value); 1779 break; 1780 } 1781 context->ok_pending = 1; 1782 break; 1783 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1784 // expected by SLC state machine 1785 if (context->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1786 context->send_ag_indicators_segment = 0; 1787 context->send_ag_status_indicators = 1; 1788 break; 1789 case HFP_CMD_LIST_CURRENT_CALLS: 1790 context->command = HFP_CMD_NONE; 1791 context->send_status_of_current_calls = 1; 1792 hfp_emit_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_STATUS_OF_CURRENT_CALL, 0); 1793 break; 1794 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1795 if (subscriber_numbers_count == 0){ 1796 hfp_ag_ok(context->rfcomm_cid); 1797 break; 1798 } 1799 context->next_subscriber_number_to_send = 0; 1800 context->send_subscriber_number = 1; 1801 break; 1802 case HFP_CMD_TRANSMIT_DTMF_CODES: 1803 context->command = HFP_CMD_NONE; 1804 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &context->line_buffer[0]); 1805 break; 1806 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1807 context->command = HFP_CMD_NONE; 1808 hfp_emit_event(hfp_callback, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG, 0); 1809 break; 1810 case HFP_CMD_TURN_OFF_EC_AND_NR: 1811 context->command = HFP_CMD_NONE; 1812 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1813 context->ok_pending = 1; 1814 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, context->ag_echo_and_noise_reduction); 1815 printf("AG: EC/NR = %u\n", context->ag_echo_and_noise_reduction); 1816 } else { 1817 context->send_error = 1; 1818 } 1819 break; 1820 case HFP_CMD_CALL_ANSWERED: 1821 context->command = HFP_CMD_NONE; 1822 printf("HFP: ATA\n"); 1823 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, context); 1824 break; 1825 case HFP_CMD_HANG_UP_CALL: 1826 context->command = HFP_CMD_NONE; 1827 context->ok_pending = 1; 1828 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, context); 1829 break; 1830 case HFP_CMD_CALL_HOLD: { 1831 // TODO: fully implement this 1832 log_error("HFP: unhandled call hold type %c", context->line_buffer[0]); 1833 context->command = HFP_CMD_NONE; 1834 context->ok_pending = 1; 1835 context->call_index = 0; 1836 1837 if (context->line_buffer[1] != '\0'){ 1838 context->call_index = atoi((char *)&context->line_buffer[1]); 1839 } 1840 1841 switch (context->line_buffer[0]){ 1842 case '0': 1843 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1844 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, context); 1845 break; 1846 case '1': 1847 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1848 // Where both a held and a waiting call exist, the above procedures shall apply to the 1849 // waiting call (i.e., not to the held call) in conflicting situation. 1850 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, context); 1851 break; 1852 case '2': 1853 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1854 // Where both a held and a waiting call exist, the above procedures shall apply to the 1855 // waiting call (i.e., not to the held call) in conflicting situation. 1856 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, context); 1857 break; 1858 case '3': 1859 // Adds a held call to the conversation. 1860 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, context); 1861 break; 1862 case '4': 1863 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1864 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, context); 1865 break; 1866 default: 1867 break; 1868 } 1869 break; 1870 } 1871 case HFP_CMD_CALL_PHONE_NUMBER: 1872 context->command = HFP_CMD_NONE; 1873 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, context); 1874 break; 1875 case HFP_CMD_REDIAL_LAST_NUMBER: 1876 context->command = HFP_CMD_NONE; 1877 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, context); 1878 break; 1879 case HFP_CMD_ENABLE_CLIP: 1880 context->command = HFP_CMD_NONE; 1881 context->clip_enabled = context->line_buffer[8] != '0'; 1882 log_info("hfp: clip set, now: %u", context->clip_enabled); 1883 context->ok_pending = 1; 1884 break; 1885 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1886 context->command = HFP_CMD_NONE; 1887 context->call_waiting_notification_enabled = context->line_buffer[8] != '0'; 1888 log_info("hfp: call waiting notification set, now: %u", context->call_waiting_notification_enabled); 1889 context->ok_pending = 1; 1890 break; 1891 case HFP_CMD_SET_SPEAKER_GAIN: 1892 context->command = HFP_CMD_NONE; 1893 context->ok_pending = 1; 1894 printf("HF speaker gain = %u\n", context->speaker_gain); 1895 break; 1896 case HFP_CMD_SET_MICROPHONE_GAIN: 1897 context->command = HFP_CMD_NONE; 1898 context->ok_pending = 1; 1899 printf("HF microphone gain = %u\n", context->microphone_gain); 1900 break; 1901 default: 1902 break; 1903 } 1904 } 1905 1906 static void hfp_run(void){ 1907 btstack_linked_list_iterator_t it; 1908 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1909 while (btstack_linked_list_iterator_has_next(&it)){ 1910 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1911 hfp_run_for_context(connection); 1912 } 1913 } 1914 1915 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1916 switch (packet_type){ 1917 case RFCOMM_DATA_PACKET: 1918 hfp_handle_rfcomm_data(packet_type, channel, packet, size); 1919 break; 1920 case HCI_EVENT_PACKET: 1921 hfp_handle_hci_event(hfp_callback, packet_type, packet, size); 1922 break; 1923 default: 1924 break; 1925 } 1926 1927 hfp_run(); 1928 } 1929 1930 static void hfp_ag_set_ag_indicators(hfp_ag_indicator_t * ag_indicators, int ag_indicators_nr){ 1931 hfp_ag_indicators_nr = ag_indicators_nr; 1932 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 1933 } 1934 1935 void hfp_ag_init(uint16_t rfcomm_channel_nr, uint32_t supported_features, 1936 uint8_t * codecs, int codecs_nr, 1937 hfp_ag_indicator_t * ag_indicators, int ag_indicators_nr, 1938 hfp_generic_status_indicator_t * hf_indicators, int hf_indicators_nr, 1939 const char *call_hold_services[], int call_hold_services_nr){ 1940 if (codecs_nr > HFP_MAX_NUM_CODECS){ 1941 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 1942 return; 1943 } 1944 l2cap_init(); 1945 l2cap_register_packet_handler(packet_handler); 1946 1947 rfcomm_register_packet_handler(packet_handler); 1948 1949 hfp_init(rfcomm_channel_nr); 1950 1951 hfp_supported_features = supported_features; 1952 hfp_codecs_nr = codecs_nr; 1953 1954 int i; 1955 for (i=0; i<codecs_nr; i++){ 1956 hfp_codecs[i] = codecs[i]; 1957 } 1958 1959 hfp_ag_set_ag_indicators(ag_indicators, ag_indicators_nr); 1960 1961 set_hfp_generic_status_indicators(hf_indicators, hf_indicators_nr); 1962 1963 hfp_ag_call_hold_services_nr = call_hold_services_nr; 1964 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 1965 1966 hfp_ag_response_and_hold_active = 0; 1967 subscriber_numbers = NULL; 1968 subscriber_numbers_count = 0; 1969 1970 hfp_gsm_init(); 1971 } 1972 1973 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 1974 hfp_establish_service_level_connection(bd_addr, SDP_Handsfree); 1975 } 1976 1977 void hfp_ag_release_service_level_connection(bd_addr_t bd_addr){ 1978 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 1979 hfp_release_service_level_connection(connection); 1980 hfp_run_for_context(connection); 1981 } 1982 1983 void hfp_ag_report_extended_audio_gateway_error_result_code(bd_addr_t bd_addr, hfp_cme_error_t error){ 1984 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 1985 if (!connection){ 1986 log_error("HFP HF: connection doesn't exist."); 1987 return; 1988 } 1989 connection->extended_audio_gateway_error = 0; 1990 if (!connection->enable_extended_audio_gateway_error_report){ 1991 return; 1992 } 1993 connection->extended_audio_gateway_error = error; 1994 hfp_run_for_context(connection); 1995 } 1996 1997 static void hfp_ag_setup_audio_connection(hfp_connection_t * connection){ 1998 if (connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 1999 if (connection->state >= HFP_W2_DISCONNECT_SCO) return; 2000 2001 connection->establish_audio_connection = 1; 2002 2003 if (!has_codec_negotiation_feature(connection)){ 2004 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using defaults"); 2005 connection->codecs_state = HFP_CODECS_EXCHANGED; 2006 } 2007 2008 switch (connection->codecs_state){ 2009 case HFP_CODECS_IDLE: 2010 case HFP_CODECS_RECEIVED_LIST: 2011 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2012 case HFP_CODECS_ERROR: 2013 connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2014 break; 2015 default: 2016 break; 2017 } 2018 } 2019 2020 void hfp_ag_establish_audio_connection(bd_addr_t bd_addr){ 2021 hfp_ag_establish_service_level_connection(bd_addr); 2022 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2023 2024 connection->establish_audio_connection = 0; 2025 hfp_ag_setup_audio_connection(connection); 2026 hfp_run_for_context(connection); 2027 } 2028 2029 void hfp_ag_release_audio_connection(bd_addr_t bd_addr){ 2030 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2031 hfp_release_audio_connection(connection); 2032 hfp_run_for_context(connection); 2033 } 2034 2035 /** 2036 * @brief Enable in-band ring tone 2037 */ 2038 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2039 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2040 return; 2041 } 2042 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2043 2044 btstack_linked_list_iterator_t it; 2045 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2046 while (btstack_linked_list_iterator_has_next(&it)){ 2047 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2048 connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2049 hfp_run_for_context(connection); 2050 } 2051 } 2052 2053 /** 2054 * @brief Called from GSM 2055 */ 2056 void hfp_ag_incoming_call(void){ 2057 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2058 } 2059 2060 /** 2061 * @brief number is stored. 2062 */ 2063 void hfp_ag_set_clip(uint8_t type, const char * number){ 2064 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2065 } 2066 2067 void hfp_ag_call_dropped(void){ 2068 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2069 } 2070 2071 // call from AG UI 2072 void hfp_ag_answer_incoming_call(void){ 2073 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2074 } 2075 2076 void hfp_ag_join_held_call(void){ 2077 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2078 } 2079 2080 void hfp_ag_terminate_call(void){ 2081 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2082 } 2083 2084 void hfp_ag_outgoing_call_ringing(void){ 2085 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2086 } 2087 2088 void hfp_ag_outgoing_call_established(void){ 2089 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2090 } 2091 2092 void hfp_ag_outgoing_call_rejected(void){ 2093 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2094 } 2095 2096 void hfp_ag_outgoing_call_accepted(void){ 2097 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2098 } 2099 2100 void hfp_ag_hold_incoming_call(void){ 2101 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2102 } 2103 2104 void hfp_ag_accept_held_incoming_call(void) { 2105 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2106 } 2107 2108 void hfp_ag_reject_held_incoming_call(void){ 2109 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2110 } 2111 2112 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2113 int indicator_index = get_ag_indicator_index_for_name(name); 2114 if (indicator_index < 0) return; 2115 hfp_ag_indicators[indicator_index].status = value; 2116 2117 2118 btstack_linked_list_iterator_t it; 2119 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2120 while (btstack_linked_list_iterator_has_next(&it)){ 2121 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2122 if (!connection->ag_indicators[indicator_index].enabled) { 2123 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2124 continue; 2125 } 2126 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2127 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2128 hfp_run_for_context(connection); 2129 } 2130 } 2131 2132 /* 2133 * @brief 2134 */ 2135 void hfp_ag_set_registration_status(int status){ 2136 hfp_ag_set_ag_indicator("service", status); 2137 } 2138 2139 /* 2140 * @brief 2141 */ 2142 void hfp_ag_set_signal_strength(int strength){ 2143 hfp_ag_set_ag_indicator("signal", strength); 2144 } 2145 2146 /* 2147 * @brief 2148 */ 2149 void hfp_ag_set_roaming_status(int status){ 2150 hfp_ag_set_ag_indicator("roam", status); 2151 } 2152 2153 /* 2154 * @brief 2155 */ 2156 void hfp_ag_set_battery_level(int level){ 2157 hfp_ag_set_ag_indicator("battchg", level); 2158 } 2159 2160 /* 2161 * @brief 2162 */ 2163 void hfp_ag_activate_voice_recognition(bd_addr_t bd_addr, int activate){ 2164 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2165 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2166 2167 if (!get_bit(connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2168 printf("AG cannot acivate voice recognition - not supported by HF\n"); 2169 return; 2170 } 2171 2172 if (activate){ 2173 hfp_ag_establish_audio_connection(bd_addr); 2174 } 2175 2176 connection->ag_activate_voice_recognition = activate; 2177 connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2178 hfp_run_for_context(connection); 2179 } 2180 2181 /* 2182 * @brief 2183 */ 2184 void hfp_ag_set_microphone_gain(bd_addr_t bd_addr, int gain){ 2185 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2186 if (connection->microphone_gain != gain){ 2187 connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2188 connection->microphone_gain = gain; 2189 connection->send_microphone_gain = 1; 2190 } 2191 hfp_run_for_context(connection); 2192 } 2193 2194 /* 2195 * @brief 2196 */ 2197 void hfp_ag_set_speaker_gain(bd_addr_t bd_addr, int gain){ 2198 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2199 if (connection->speaker_gain != gain){ 2200 connection->speaker_gain = gain; 2201 connection->send_speaker_gain = 1; 2202 } 2203 hfp_run_for_context(connection); 2204 } 2205 2206 /* 2207 * @brief 2208 */ 2209 void hfp_ag_send_phone_number_for_voice_tag(bd_addr_t bd_addr, const char * number){ 2210 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2211 hfp_ag_set_clip(0, number); 2212 connection->send_phone_number_for_voice_tag = 1; 2213 } 2214 2215 void hfp_ag_reject_phone_number_for_voice_tag(bd_addr_t bd_addr){ 2216 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2217 connection->send_error = 1; 2218 } 2219 2220 void hfp_ag_send_dtmf_code_done(bd_addr_t bd_addr){ 2221 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2222 connection->ok_pending = 1; 2223 } 2224 2225 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2226 subscriber_numbers = numbers; 2227 subscriber_numbers_count = numbers_count; 2228 } 2229 2230 void hfp_ag_send_current_call_status(bd_addr_t bd_addr, int idx, hfp_enhanced_call_dir_t dir, 2231 hfp_enhanced_call_status_t status, hfp_enhanced_call_mode_t mode, 2232 hfp_enhanced_call_mpty_t mpty, uint8_t type, const char * number){ 2233 2234 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2235 2236 char buffer[100]; 2237 // TODO: check length of a buffer, to fit the MTU 2238 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 2239 if (number){ 2240 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ", \"%s\",%u", number, type); 2241 } 2242 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 2243 send_str_over_rfcomm(connection->rfcomm_cid, buffer); 2244 } 2245 2246 2247 void hfp_ag_send_current_call_status_done(bd_addr_t bd_addr){ 2248 hfp_connection_t * connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2249 connection->ok_pending = 1; 2250 connection->send_status_of_current_calls = 0; 2251 } 2252 2253