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