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 "btstack_event.h" 60 #include "classic/core.h" 61 #include "classic/hfp.h" 62 #include "classic/hfp_ag.h" 63 #include "classic/hfp_gsm_model.h" 64 #include "classic/sdp_client_rfcomm.h" 65 #include "classic/sdp_server.h" 66 #include "classic/sdp_util.h" 67 68 // private prototypes 69 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 70 static void hfp_run_for_context(hfp_connection_t *context); 71 static void hfp_ag_setup_audio_connection(hfp_connection_t * connection); 72 static void hfp_ag_hf_start_ringing(hfp_connection_t * context); 73 74 // public prototypes 75 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 76 int get_hfp_generic_status_indicators_nr(void); 77 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 78 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 79 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 80 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 81 82 // gobals 83 static const char default_hfp_ag_service_name[] = "Voice gateway"; 84 85 static uint16_t hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 86 87 static uint8_t hfp_codecs_nr = 0; 88 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 89 90 static int hfp_ag_indicators_nr = 0; 91 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_AG_INDICATORS]; 92 93 static int hfp_generic_status_indicators_nr = 0; 94 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_HF_INDICATORS]; 95 96 static int hfp_ag_call_hold_services_nr = 0; 97 static char *hfp_ag_call_hold_services[6]; 98 static btstack_packet_handler_t hfp_callback; 99 100 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 101 static int hfp_ag_response_and_hold_active = 0; 102 103 // Subcriber information entries 104 static hfp_phone_number_t * subscriber_numbers = NULL; 105 static int subscriber_numbers_count = 0; 106 107 static btstack_packet_callback_registration_t hci_event_callback_registration; 108 static void hfp_run_for_context(hfp_connection_t *hfp_connection); 109 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 110 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection); 111 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection); 112 113 114 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 115 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 116 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 117 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 118 } 119 return hfp_connection->ag_indicators_nr; 120 } 121 122 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 123 // TODO: save only value, and value changed in the hfp_connection? 124 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 125 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 126 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 127 } 128 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 129 } 130 131 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 132 int i; 133 for (i = 0; i < hfp_ag_indicators_nr; i++){ 134 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 135 return &hfp_ag_indicators[i]; 136 } 137 } 138 return NULL; 139 } 140 141 static int get_ag_indicator_index_for_name(const char * name){ 142 int i; 143 for (i = 0; i < hfp_ag_indicators_nr; i++){ 144 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 145 return i; 146 } 147 } 148 return -1; 149 } 150 151 152 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 153 if (callback == NULL){ 154 log_error("hfp_ag_register_packet_handler called with NULL callback"); 155 return; 156 } 157 hfp_callback = callback; 158 hfp_set_callback(callback); 159 } 160 161 static int use_in_band_tone(void){ 162 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 163 } 164 165 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 166 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 167 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 168 return hf && ag; 169 } 170 171 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 172 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 173 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 174 return hf && ag; 175 } 176 177 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 178 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 179 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 180 return hf && ag; 181 } 182 183 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){ 184 if (!name){ 185 name = default_hfp_ag_service_name; 186 } 187 hfp_create_sdp_record(service, service_record_handle, SDP_HandsfreeAudioGateway, rfcomm_channel_nr, name); 188 189 /* 190 * 0x01 – Ability to reject a call 191 * 0x00 – No ability to reject a call 192 */ 193 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 194 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 195 196 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 197 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 198 } 199 200 static int hfp_ag_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 201 char buffer[20]; 202 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 203 return send_str_over_rfcomm(cid, buffer); 204 } 205 206 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 207 char buffer[40]; 208 sprintf(buffer, "\r\n%s:%d\r\n\r\nOK\r\n", HFP_SUPPORTED_FEATURES, hfp_supported_features); 209 return send_str_over_rfcomm(cid, buffer); 210 } 211 212 static int hfp_ag_ok(uint16_t cid){ 213 char buffer[10]; 214 sprintf(buffer, "\r\nOK\r\n"); 215 return send_str_over_rfcomm(cid, buffer); 216 } 217 218 static int hfp_ag_ring(uint16_t cid){ 219 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 220 } 221 222 static int hfp_ag_send_clip(uint16_t cid){ 223 char buffer[50]; 224 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 225 return send_str_over_rfcomm(cid, buffer); 226 } 227 228 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 229 char buffer[50]; 230 sprintf(buffer, "\r\n%s: ,\"%s\",%u, , \r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 231 return send_str_over_rfcomm(cid, buffer); 232 } 233 234 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 235 char buffer[50]; 236 sprintf(buffer, "\r\n%s: %s\r\n", HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 237 return send_str_over_rfcomm(cid, buffer); 238 } 239 240 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 241 char buffer[50]; 242 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 243 return send_str_over_rfcomm(cid, buffer); 244 } 245 246 static int hfp_ag_error(uint16_t cid){ 247 char buffer[10]; 248 sprintf(buffer, "\r\nERROR\r\n"); 249 return send_str_over_rfcomm(cid, buffer); 250 } 251 252 static int hfp_ag_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 253 char buffer[20]; 254 sprintf(buffer, "\r\n%s=%d\r\n", HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 255 return send_str_over_rfcomm(cid, buffer); 256 } 257 258 // fast & small implementation for fixed int size 259 static int string_len_for_uint32(uint32_t i){ 260 if (i < 10) return 1; 261 if (i < 100) return 2; 262 if (i < 1000) return 3; 263 if (i < 10000) return 4; 264 if (i < 100000) return 5; 265 if (i < 1000000) return 6; 266 if (i < 10000000) return 7; 267 if (i < 100000000) return 8; 268 if (i < 1000000000) return 9; 269 return 10; 270 } 271 272 // get size for indicator string 273 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 274 // template: ("$NAME",($MIN,$MAX)) 275 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 276 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 277 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 278 } 279 280 // store indicator 281 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer){ 282 sprintf((char *) buffer, "(\"%s\",(%d,%d)),", 283 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 284 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 285 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 286 } 287 288 // structure: header [indicator [comma indicator]] footer 289 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 290 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 291 if (!num_indicators) return 2; 292 return 3 + (num_indicators-1) * 2; 293 } 294 295 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 296 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 297 if (index == 0) { 298 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 299 } 300 index--; 301 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 302 int indicator_index = index >> 1; 303 if ((index & 1) == 0){ 304 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 305 } 306 if (indicator_index == num_indicators - 1){ 307 return 8; // "\r\n\r\nOK\r\n" 308 } 309 return 1; // comma 310 } 311 312 static void hgp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer){ 313 if (index == 0){ 314 *buffer++ = '\r'; 315 *buffer++ = '\n'; 316 int len = strlen(HFP_INDICATOR); 317 memcpy(buffer, HFP_INDICATOR, len); 318 buffer += len; 319 *buffer++ = ':'; 320 return; 321 } 322 index--; 323 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 324 int indicator_index = index >> 1; 325 if ((index & 1) == 0){ 326 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer); 327 return; 328 } 329 if (indicator_index == num_indicators-1){ 330 memcpy(buffer, "\r\n\r\nOK\r\n", 8); 331 return; 332 } 333 *buffer = ','; 334 } 335 336 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 337 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 338 int i; 339 int offset = 0; 340 for (i = 0; i < hfp_generic_status_indicators_nr-1; i++) { 341 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 342 } 343 if (i < hfp_generic_status_indicators_nr){ 344 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 345 } 346 return offset; 347 } 348 349 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 350 if (buffer_size < hfp_generic_status_indicators_nr * 3) return 0; 351 int i; 352 int offset = 0; 353 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 354 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); 355 } 356 return offset; 357 } 358 359 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 360 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 361 int i; 362 int offset = 0; 363 for (i = 0; i < hfp_ag_indicators_nr-1; i++) { 364 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 365 } 366 if (i<hfp_ag_indicators_nr){ 367 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 368 } 369 return offset; 370 } 371 372 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 373 if (buffer_size < hfp_ag_call_hold_services_nr * 3) return 0; 374 int i; 375 int offset = snprintf(buffer, buffer_size, "("); 376 for (i = 0; i < hfp_ag_call_hold_services_nr-1; i++) { 377 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 378 } 379 if (i<hfp_ag_call_hold_services_nr){ 380 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 381 } 382 return offset; 383 } 384 385 static int hfp_ag_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 386 int start_segment, int num_segments, 387 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 388 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer)){ 389 390 // assumes: can send now == true 391 // assumes: num segments > 0 392 // assumes: individual segments are smaller than MTU 393 rfcomm_reserve_packet_buffer(); 394 int mtu = rfcomm_get_max_frame_size(cid); 395 uint8_t * data = rfcomm_get_outgoing_buffer(); 396 int offset = 0; 397 int segment = start_segment; 398 while (segment < num_segments){ 399 int segment_len = get_segment_len(hfp_connection, segment); 400 if (offset + segment_len > mtu) break; 401 // append segement 402 store_segment(hfp_connection, segment, data+offset); 403 offset += segment_len; 404 segment++; 405 } 406 rfcomm_send_prepared(cid, offset); 407 return segment; 408 } 409 410 // returns next segment to store 411 static int hfp_ag_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 412 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 413 return hfp_ag_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 414 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 415 } 416 417 static int hfp_ag_retrieve_indicators_status_cmd(uint16_t cid){ 418 char buffer[40]; 419 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_INDICATOR); 420 offset += hfp_ag_indicators_status_join(buffer+offset, sizeof(buffer)-offset); 421 422 buffer[offset] = 0; 423 424 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 425 buffer[offset] = 0; 426 return send_str_over_rfcomm(cid, buffer); 427 } 428 429 static int hfp_ag_set_indicator_status_update_cmd(uint16_t cid, uint8_t activate){ 430 // AT\r\n%s:3,0,0,%d\r\n 431 return hfp_ag_ok(cid); 432 } 433 434 435 static int hfp_ag_retrieve_can_hold_call_cmd(uint16_t cid){ 436 char buffer[40]; 437 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 438 offset += hfp_ag_call_services_join(buffer+offset, sizeof(buffer)-offset); 439 440 buffer[offset] = 0; 441 442 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 443 buffer[offset] = 0; 444 return send_str_over_rfcomm(cid, buffer); 445 } 446 447 448 static int hfp_ag_list_supported_generic_status_indicators_cmd(uint16_t cid){ 449 return hfp_ag_ok(cid); 450 } 451 452 static int hfp_ag_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 453 char buffer[40]; 454 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 455 offset += hfp_hf_indicators_join(buffer+offset, sizeof(buffer)-offset); 456 457 buffer[offset] = 0; 458 459 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ")\r\n\r\nOK\r\n"); 460 buffer[offset] = 0; 461 return send_str_over_rfcomm(cid, buffer); 462 } 463 464 static int hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 465 char buffer[40]; 466 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer)); 467 468 buffer[offset] = 0; 469 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 470 buffer[offset] = 0; 471 return send_str_over_rfcomm(cid, buffer); 472 } 473 474 static int hfp_ag_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 475 char buffer[20]; 476 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 477 return send_str_over_rfcomm(cid, buffer); 478 } 479 480 static int hfp_ag_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 481 char buffer[40]; 482 if (strlen(op.name) == 0){ 483 sprintf(buffer, "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 484 } else { 485 sprintf(buffer, "\r\n%s:%d,%d,%s\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format, op.name); 486 } 487 return send_str_over_rfcomm(cid, buffer); 488 } 489 490 491 static int hfp_ag_cmd_suggest_codec(uint16_t cid, uint8_t codec){ 492 char buffer[30]; 493 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CONFIRM_COMMON_CODEC, codec); 494 return send_str_over_rfcomm(cid, buffer); 495 } 496 497 static int hfp_ag_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 498 char buffer[30]; 499 sprintf(buffer, "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 500 return send_str_over_rfcomm(cid, buffer); 501 } 502 503 static int hfp_ag_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 504 char buffer[30]; 505 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_SPEAKER_GAIN, gain); 506 return send_str_over_rfcomm(cid, buffer); 507 } 508 509 static int hfp_ag_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 510 char buffer[30]; 511 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_MICROPHONE_GAIN, gain); 512 return send_str_over_rfcomm(cid, buffer); 513 } 514 515 static int hfp_ag_set_response_and_hold(uint16_t cid, int state){ 516 char buffer[30]; 517 sprintf(buffer, "\r\n%s: %d\r\n", HFP_RESPONSE_AND_HOLD, state); 518 return send_str_over_rfcomm(cid, buffer); 519 } 520 521 522 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 523 int i,j; 524 uint8_t codec = HFP_CODEC_CVSD; 525 for (i = 0; i < hfp_codecs_nr; i++){ 526 for (j = 0; j < hfp_connection->remote_codecs_nr; j++){ 527 if (hfp_connection->remote_codecs[j] == hfp_codecs[i]){ 528 codec = hfp_connection->remote_codecs[j]; 529 continue; 530 } 531 } 532 } 533 return codec; 534 } 535 536 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 537 /* events ( == commands): 538 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 539 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 540 hf_trigger_codec_connection_setup == received BCC 541 ag_trigger_codec_connection_setup == received from AG to send BCS 542 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 543 */ 544 545 switch (hfp_connection->codecs_state){ 546 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 547 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 548 break; 549 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 550 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 551 break; 552 default: 553 break; 554 } 555 556 // printf(" -> State machine: CC\n"); 557 558 switch (hfp_connection->command){ 559 case HFP_CMD_AVAILABLE_CODECS: 560 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 561 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 562 hfp_ag_ok(hfp_connection->rfcomm_cid); 563 return 1; 564 } 565 566 switch (hfp_connection->codecs_state){ 567 case HFP_CODECS_AG_SENT_COMMON_CODEC: 568 case HFP_CODECS_EXCHANGED: 569 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 570 break; 571 default: 572 break; 573 } 574 hfp_ag_ok(hfp_connection->rfcomm_cid); 575 return 1; 576 577 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 578 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 579 hfp_ag_ok(hfp_connection->rfcomm_cid); 580 return 1; 581 582 case HFP_CMD_AG_SEND_COMMON_CODEC: 583 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 584 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 585 hfp_ag_cmd_suggest_codec(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 586 return 1; 587 588 case HFP_CMD_HF_CONFIRMED_CODEC: 589 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 590 hfp_connection->codecs_state = HFP_CODECS_ERROR; 591 hfp_ag_error(hfp_connection->rfcomm_cid); 592 return 1; 593 } 594 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 595 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 596 hfp_emit_event(hfp_callback, HFP_SUBEVENT_CODECS_CONNECTION_COMPLETE, 0); 597 hfp_ag_ok(hfp_connection->rfcomm_cid); 598 return 1; 599 default: 600 break; 601 } 602 return 0; 603 } 604 605 static void hfp_init_link_settings(hfp_connection_t * hfp_connection){ 606 // determine highest possible link setting 607 hfp_connection->link_setting = HFP_LINK_SETTINGS_D1; 608 if (hci_remote_esco_supported(hfp_connection->acl_handle)){ 609 hfp_connection->link_setting = HFP_LINK_SETTINGS_S3; 610 if ((hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) 611 && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4))){ 612 hfp_connection->link_setting = HFP_LINK_SETTINGS_S4; 613 } 614 } 615 } 616 617 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 618 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 619 hfp_emit_connection_event(hfp_callback, HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED, 0, hfp_connection->acl_handle); 620 621 hfp_init_link_settings(hfp_connection); 622 623 // if active call exist, set per-hfp_connection state active, too (when audio is on) 624 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 625 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 626 } 627 // if AG is ringing, also start ringing on the HF 628 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS && 629 hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 630 hfp_ag_hf_start_ringing(hfp_connection); 631 } 632 } 633 634 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 635 log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 636 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 637 int done = 0; 638 switch(hfp_connection->command){ 639 case HFP_CMD_SUPPORTED_FEATURES: 640 switch(hfp_connection->state){ 641 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 642 case HFP_EXCHANGE_SUPPORTED_FEATURES: 643 if (has_codec_negotiation_feature(hfp_connection)){ 644 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 645 } else { 646 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 647 } 648 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 649 return 1; 650 default: 651 break; 652 } 653 break; 654 case HFP_CMD_AVAILABLE_CODECS: 655 done = codecs_exchange_state_machine(hfp_connection); 656 657 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 658 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 659 } 660 return done; 661 662 case HFP_CMD_RETRIEVE_AG_INDICATORS: 663 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 664 // HF requested AG Indicators and we did expect it 665 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 666 // continue below in state switch 667 } 668 break; 669 670 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 671 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 672 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 673 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 674 return 1; 675 676 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 677 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 678 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 679 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 680 } else if (has_hf_indicators_feature(hfp_connection)){ 681 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 682 } else { 683 hfp_ag_slc_established(hfp_connection); 684 } 685 hfp_ag_set_indicator_status_update_cmd(hfp_connection->rfcomm_cid, 1); 686 return 1; 687 688 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 689 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 690 if (has_hf_indicators_feature(hfp_connection)){ 691 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 692 } 693 hfp_ag_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 694 if (!has_hf_indicators_feature(hfp_connection)){ 695 hfp_ag_slc_established(hfp_connection); 696 } 697 return 1; 698 699 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 700 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 701 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 702 hfp_ag_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 703 return 1; 704 705 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 706 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 707 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 708 hfp_ag_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 709 return 1; 710 711 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 712 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 713 hfp_ag_slc_established(hfp_connection); 714 hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 715 return 1; 716 default: 717 break; 718 } 719 720 switch (hfp_connection->state){ 721 case HFP_RETRIEVE_INDICATORS: { 722 int next_segment = hfp_ag_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 723 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 724 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 725 if (next_segment < num_segments){ 726 // prepare sending of next segment 727 hfp_connection->send_ag_indicators_segment = next_segment; 728 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 729 } else { 730 // done, go to next state 731 hfp_connection->send_ag_indicators_segment = 0; 732 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 733 } 734 return 1; 735 } 736 default: 737 break; 738 } 739 740 return done; 741 } 742 743 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 744 745 int done = codecs_exchange_state_machine(hfp_connection); 746 if (done) return done; 747 748 switch(hfp_connection->command){ 749 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 750 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 751 hfp_ag_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 752 return 1; 753 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 754 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 755 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 756 hfp_ag_ok(hfp_connection->rfcomm_cid); 757 hfp_ag_setup_audio_connection(hfp_connection); 758 } else { 759 hfp_ag_error(hfp_connection->rfcomm_cid); 760 } 761 return 1; 762 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 763 hfp_ag_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 764 return 1; 765 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 766 hfp_ag_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 767 return 1; 768 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 769 if (hfp_connection->network_operator.format != 0){ 770 hfp_ag_error(hfp_connection->rfcomm_cid); 771 } else { 772 hfp_ag_ok(hfp_connection->rfcomm_cid); 773 } 774 return 1; 775 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 776 hfp_ag_ok(hfp_connection->rfcomm_cid); 777 return 1; 778 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 779 if (hfp_connection->extended_audio_gateway_error){ 780 hfp_connection->extended_audio_gateway_error = 0; 781 hfp_ag_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 782 return 1; 783 } 784 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 785 hfp_ag_ok(hfp_connection->rfcomm_cid); 786 return 1; 787 default: 788 break; 789 } 790 return 0; 791 } 792 793 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 794 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 795 hfp_connection->state > HFP_W2_DISCONNECT_SCO) return 0; 796 797 798 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->release_audio_connection){ 799 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 800 hfp_connection->release_audio_connection = 0; 801 gap_disconnect(hfp_connection->sco_handle); 802 return 1; 803 } 804 805 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 806 807 // run codecs exchange 808 int done = codecs_exchange_state_machine(hfp_connection); 809 if (done) return done; 810 811 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return done; 812 if (hfp_connection->establish_audio_connection){ 813 hfp_connection->state = HFP_W4_SCO_CONNECTED; 814 hfp_connection->establish_audio_connection = 0; 815 hfp_setup_synchronous_connection(hfp_connection); 816 return 1; 817 } 818 return 0; 819 } 820 821 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 822 btstack_linked_list_iterator_t it; 823 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 824 825 while (btstack_linked_list_iterator_has_next(&it)){ 826 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 827 if ( & hfp_connection->hfp_timeout == ts) { 828 return hfp_connection; 829 } 830 } 831 return NULL; 832 } 833 834 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 835 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 836 if (!hfp_connection) return; 837 838 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 839 hfp_connection->ag_ring = 1; 840 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 841 842 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 843 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 844 845 hfp_run_for_context(hfp_connection); 846 } 847 848 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 849 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 850 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 851 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 852 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 853 } 854 855 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 856 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 857 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 858 } 859 860 // 861 // transitition implementations for hfp_ag_call_state_machine 862 // 863 864 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 865 if (use_in_band_tone()){ 866 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 867 hfp_ag_establish_audio_connection(hfp_connection->remote_addr); 868 } else { 869 hfp_timeout_start(hfp_connection); 870 hfp_connection->ag_ring = 1; 871 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 872 hfp_connection->call_state = HFP_CALL_RINGING; 873 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 874 } 875 } 876 877 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 878 hfp_connection->ag_ring = 0; 879 hfp_connection->ag_send_clip = 0; 880 hfp_timeout_stop(hfp_connection); 881 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_STOP_RINGINIG); 882 } 883 884 static void hfp_ag_trigger_incoming_call(void){ 885 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 886 if (indicator_index < 0) return; 887 888 btstack_linked_list_iterator_t it; 889 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 890 while (btstack_linked_list_iterator_has_next(&it)){ 891 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 892 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 893 if (hfp_connection->call_state == HFP_CALL_IDLE){ 894 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 895 hfp_ag_hf_start_ringing(hfp_connection); 896 } 897 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 898 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 899 } 900 hfp_run_for_context(hfp_connection); 901 } 902 } 903 904 static void hfp_ag_transfer_callsetup_state(void){ 905 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 906 if (indicator_index < 0) return; 907 908 btstack_linked_list_iterator_t it; 909 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 910 while (btstack_linked_list_iterator_has_next(&it)){ 911 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 912 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 913 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 914 hfp_run_for_context(hfp_connection); 915 } 916 } 917 918 static void hfp_ag_transfer_call_state(void){ 919 int indicator_index = get_ag_indicator_index_for_name("call"); 920 if (indicator_index < 0) return; 921 922 btstack_linked_list_iterator_t it; 923 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 924 while (btstack_linked_list_iterator_has_next(&it)){ 925 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 926 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 927 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 928 hfp_run_for_context(hfp_connection); 929 } 930 } 931 932 static void hfp_ag_transfer_callheld_state(void){ 933 int indicator_index = get_ag_indicator_index_for_name("callheld"); 934 if (indicator_index < 0) return; 935 936 btstack_linked_list_iterator_t it; 937 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 938 while (btstack_linked_list_iterator_has_next(&it)){ 939 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 940 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 941 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 942 hfp_run_for_context(hfp_connection); 943 } 944 } 945 946 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 947 948 int call_indicator_index = get_ag_indicator_index_for_name("call"); 949 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 950 951 btstack_linked_list_iterator_t it; 952 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 953 while (btstack_linked_list_iterator_has_next(&it)){ 954 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 955 if (hfp_connection->call_state != HFP_CALL_RINGING && 956 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 957 958 hfp_ag_hf_stop_ringing(hfp_connection); 959 if (hfp_connection == source){ 960 hfp_connection->ok_pending = 1; 961 962 if (use_in_band_tone()){ 963 hfp_connection->call_state = HFP_CALL_ACTIVE; 964 } else { 965 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 966 hfp_ag_establish_audio_connection(hfp_connection->remote_addr); 967 } 968 969 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 970 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 971 972 } else { 973 hfp_connection->call_state = HFP_CALL_IDLE; 974 } 975 hfp_run_for_context(hfp_connection); 976 } 977 } 978 979 static void hfp_ag_ag_accept_call(void){ 980 981 int call_indicator_index = get_ag_indicator_index_for_name("call"); 982 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 983 984 btstack_linked_list_iterator_t it; 985 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 986 while (btstack_linked_list_iterator_has_next(&it)){ 987 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 988 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 989 990 hfp_ag_hf_stop_ringing(hfp_connection); 991 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 992 993 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 994 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 995 996 hfp_run_for_context(hfp_connection); 997 break; // only single 998 } 999 } 1000 1001 static void hfp_ag_trigger_reject_call(void){ 1002 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1003 btstack_linked_list_iterator_t it; 1004 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1005 while (btstack_linked_list_iterator_has_next(&it)){ 1006 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1007 if (connection->call_state != HFP_CALL_RINGING && 1008 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1009 hfp_ag_hf_stop_ringing(connection); 1010 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1011 connection->call_state = HFP_CALL_IDLE; 1012 hfp_run_for_context(connection); 1013 } 1014 } 1015 1016 static void hfp_ag_trigger_terminate_call(void){ 1017 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1018 1019 btstack_linked_list_iterator_t it; 1020 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1021 while (btstack_linked_list_iterator_has_next(&it)){ 1022 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1023 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1024 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1025 hfp_connection->call_state = HFP_CALL_IDLE; 1026 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1027 hfp_connection->release_audio_connection = 1; 1028 hfp_run_for_context(hfp_connection); 1029 } 1030 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_TERMINATED); 1031 } 1032 1033 static void hfp_ag_set_callsetup_indicator(void){ 1034 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1035 if (!indicator){ 1036 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1037 return; 1038 }; 1039 indicator->status = hfp_gsm_callsetup_status(); 1040 } 1041 1042 static void hfp_ag_set_callheld_indicator(void){ 1043 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1044 if (!indicator){ 1045 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1046 return; 1047 }; 1048 indicator->status = hfp_gsm_callheld_status(); 1049 } 1050 1051 static void hfp_ag_set_call_indicator(void){ 1052 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1053 if (!indicator){ 1054 log_error("hfp_ag_set_call_state: call indicator is missing"); 1055 return; 1056 }; 1057 indicator->status = hfp_gsm_call_status(); 1058 } 1059 1060 static void hfp_ag_stop_ringing(void){ 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 * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1065 if (hfp_connection->call_state != HFP_CALL_RINGING && 1066 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1067 hfp_ag_hf_stop_ringing(hfp_connection); 1068 } 1069 } 1070 1071 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1072 btstack_linked_list_iterator_t it; 1073 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1074 while (btstack_linked_list_iterator_has_next(&it)){ 1075 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1076 if (hfp_connection->call_state == call_state) return hfp_connection; 1077 } 1078 return NULL; 1079 } 1080 1081 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1082 btstack_linked_list_iterator_t it; 1083 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1084 while (btstack_linked_list_iterator_has_next(&it)){ 1085 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1086 hfp_connection->send_response_and_hold_status = state + 1; 1087 } 1088 } 1089 1090 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1091 int indicator_index; 1092 switch (hfp_connection->call_state){ 1093 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1094 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1095 // we got event: audio hfp_connection established 1096 hfp_timeout_start(hfp_connection); 1097 hfp_connection->ag_ring = 1; 1098 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1099 hfp_connection->call_state = HFP_CALL_RINGING; 1100 hfp_connection->call_state = HFP_CALL_RINGING; 1101 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 1102 break; 1103 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1104 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1105 // we got event: audio hfp_connection established 1106 hfp_connection->call_state = HFP_CALL_ACTIVE; 1107 break; 1108 case HFP_CALL_W2_SEND_CALL_WAITING: 1109 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1110 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1111 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1112 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1113 break; 1114 default: 1115 break; 1116 } 1117 return 0; 1118 } 1119 // hfp_connection is used to identify originating HF 1120 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1121 int indicator_index; 1122 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1123 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1124 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1125 1126 //printf("hfp_ag_call_sm event %d \n", event); 1127 switch (event){ 1128 case HFP_AG_INCOMING_CALL: 1129 switch (hfp_gsm_call_status()){ 1130 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1131 switch (hfp_gsm_callsetup_status()){ 1132 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1133 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1134 hfp_ag_set_callsetup_indicator(); 1135 hfp_ag_trigger_incoming_call(); 1136 log_info("AG rings"); 1137 break; 1138 default: 1139 break; 1140 } 1141 break; 1142 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1143 switch (hfp_gsm_callsetup_status()){ 1144 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1145 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1146 hfp_ag_set_callsetup_indicator(); 1147 hfp_ag_trigger_incoming_call(); 1148 log_info("AG call waiting"); 1149 break; 1150 default: 1151 break; 1152 } 1153 break; 1154 } 1155 break; 1156 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1157 switch (hfp_gsm_call_status()){ 1158 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1159 switch (hfp_gsm_callsetup_status()){ 1160 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1161 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1162 hfp_ag_set_call_indicator(); 1163 hfp_ag_set_callsetup_indicator(); 1164 hfp_ag_ag_accept_call(); 1165 log_info("AG answers call, accept call by GSM"); 1166 break; 1167 default: 1168 break; 1169 } 1170 break; 1171 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1172 switch (hfp_gsm_callsetup_status()){ 1173 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1174 log_info("AG: current call is placed on hold, incoming call gets active"); 1175 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1176 hfp_ag_set_callsetup_indicator(); 1177 hfp_ag_set_callheld_indicator(); 1178 hfp_ag_transfer_callsetup_state(); 1179 hfp_ag_transfer_callheld_state(); 1180 break; 1181 default: 1182 break; 1183 } 1184 break; 1185 } 1186 break; 1187 1188 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1189 switch (hfp_gsm_call_status()){ 1190 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1191 switch (hfp_gsm_callheld_status()){ 1192 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1193 log_info("AG: joining held call with active call"); 1194 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1195 hfp_ag_set_callheld_indicator(); 1196 hfp_ag_transfer_callheld_state(); 1197 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1198 break; 1199 default: 1200 break; 1201 } 1202 break; 1203 default: 1204 break; 1205 } 1206 break; 1207 1208 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 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_INCOMING_CALL_ACCEPTED_BY_HF); 1214 hfp_ag_set_callsetup_indicator(); 1215 hfp_ag_set_call_indicator(); 1216 hfp_ag_hf_accept_call(hfp_connection); 1217 log_info("HF answers call, accept call by GSM"); 1218 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_ANSWERED); 1219 break; 1220 default: 1221 break; 1222 } 1223 break; 1224 default: 1225 break; 1226 } 1227 break; 1228 1229 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1230 switch (hfp_gsm_call_status()){ 1231 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1232 switch (hfp_gsm_callsetup_status()){ 1233 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1234 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1235 hfp_ag_response_and_hold_active = 1; 1236 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1237 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1238 // as with regualr call 1239 hfp_ag_set_call_indicator(); 1240 hfp_ag_set_callsetup_indicator(); 1241 hfp_ag_ag_accept_call(); 1242 log_info("AG response and hold - hold by AG"); 1243 break; 1244 default: 1245 break; 1246 } 1247 break; 1248 default: 1249 break; 1250 } 1251 break; 1252 1253 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1254 switch (hfp_gsm_call_status()){ 1255 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1256 switch (hfp_gsm_callsetup_status()){ 1257 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1258 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1259 hfp_ag_response_and_hold_active = 1; 1260 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1261 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1262 // as with regualr call 1263 hfp_ag_set_call_indicator(); 1264 hfp_ag_set_callsetup_indicator(); 1265 hfp_ag_hf_accept_call(hfp_connection); 1266 log_info("AG response and hold - hold by HF"); 1267 break; 1268 default: 1269 break; 1270 } 1271 break; 1272 default: 1273 break; 1274 } 1275 break; 1276 1277 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1278 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1279 if (!hfp_ag_response_and_hold_active) break; 1280 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1281 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1282 hfp_ag_response_and_hold_active = 0; 1283 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1284 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1285 log_info("Held Call accepted and active"); 1286 break; 1287 1288 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1289 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1290 if (!hfp_ag_response_and_hold_active) break; 1291 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1292 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1293 hfp_ag_response_and_hold_active = 0; 1294 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1295 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1296 // from terminate by ag 1297 hfp_ag_set_call_indicator(); 1298 hfp_ag_trigger_terminate_call(); 1299 break; 1300 1301 case HFP_AG_TERMINATE_CALL_BY_HF: 1302 switch (hfp_gsm_call_status()){ 1303 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1304 switch (hfp_gsm_callsetup_status()){ 1305 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1306 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1307 hfp_ag_set_callsetup_indicator(); 1308 hfp_ag_transfer_callsetup_state(); 1309 hfp_ag_trigger_reject_call(); 1310 log_info("HF Rejected Incoming call, AG terminate call"); 1311 break; 1312 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1313 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1314 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1315 hfp_ag_set_callsetup_indicator(); 1316 hfp_ag_transfer_callsetup_state(); 1317 log_info("AG terminate outgoing call process"); 1318 default: 1319 break; 1320 } 1321 break; 1322 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1323 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1324 hfp_ag_set_call_indicator(); 1325 hfp_ag_transfer_call_state(); 1326 hfp_connection->call_state = HFP_CALL_IDLE; 1327 log_info("AG terminate call"); 1328 break; 1329 } 1330 break; 1331 1332 case HFP_AG_TERMINATE_CALL_BY_AG: 1333 switch (hfp_gsm_call_status()){ 1334 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1335 switch (hfp_gsm_callsetup_status()){ 1336 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1337 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1338 hfp_ag_set_callsetup_indicator(); 1339 hfp_ag_trigger_reject_call(); 1340 log_info("AG Rejected Incoming call, AG terminate call"); 1341 break; 1342 default: 1343 break; 1344 } 1345 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1346 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1347 hfp_ag_set_callsetup_indicator(); 1348 hfp_ag_set_call_indicator(); 1349 hfp_ag_trigger_terminate_call(); 1350 log_info("AG terminate call"); 1351 break; 1352 default: 1353 break; 1354 } 1355 break; 1356 case HFP_AG_CALL_DROPPED: 1357 switch (hfp_gsm_call_status()){ 1358 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1359 switch (hfp_gsm_callsetup_status()){ 1360 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1361 hfp_ag_stop_ringing(); 1362 log_info("Incoming call interrupted"); 1363 break; 1364 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1365 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1366 log_info("Outgoing call interrupted\n"); 1367 log_info("AG notify call dropped\n"); 1368 break; 1369 default: 1370 break; 1371 } 1372 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1373 hfp_ag_set_callsetup_indicator(); 1374 hfp_ag_transfer_callsetup_state(); 1375 break; 1376 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1377 if (hfp_ag_response_and_hold_active) { 1378 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1379 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1380 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1381 } 1382 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1383 hfp_ag_set_callsetup_indicator(); 1384 hfp_ag_set_call_indicator(); 1385 hfp_ag_trigger_terminate_call(); 1386 log_info("AG notify call dropped"); 1387 break; 1388 default: 1389 break; 1390 } 1391 break; 1392 1393 case HFP_AG_OUTGOING_CALL_INITIATED: 1394 // directly reject call if number of free slots is exceeded 1395 if (!hfp_gsm_call_possible()){ 1396 hfp_connection->send_error = 1; 1397 hfp_run_for_context(hfp_connection); 1398 break; 1399 } 1400 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1401 1402 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1403 1404 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1405 break; 1406 1407 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1408 // directly reject call if number of free slots is exceeded 1409 if (!hfp_gsm_call_possible()){ 1410 hfp_connection->send_error = 1; 1411 hfp_run_for_context(hfp_connection); 1412 break; 1413 } 1414 1415 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1416 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1417 1418 log_info("Redial last number"); 1419 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1420 1421 if (strlen(last_dialed_number) > 0){ 1422 log_info("Last number exists: accept call"); 1423 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1424 } else { 1425 log_info("log_infoLast number missing: reject call"); 1426 hfp_ag_outgoing_call_rejected(); 1427 } 1428 break; 1429 } 1430 case HFP_AG_OUTGOING_CALL_REJECTED: 1431 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1432 if (!hfp_connection){ 1433 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1434 break; 1435 } 1436 1437 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1438 hfp_connection->call_state = HFP_CALL_IDLE; 1439 hfp_connection->send_error = 1; 1440 hfp_run_for_context(hfp_connection); 1441 break; 1442 1443 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1444 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1445 if (!hfp_connection){ 1446 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1447 break; 1448 } 1449 1450 hfp_connection->ok_pending = 1; 1451 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1452 1453 // trigger callsetup to be 1454 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1455 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1456 1457 hfp_ag_set_callsetup_indicator(); 1458 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1459 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1460 1461 // put current call on hold if active 1462 if (put_call_on_hold){ 1463 log_info("AG putting current call on hold for new outgoing calllog_info"); 1464 hfp_ag_set_callheld_indicator(); 1465 indicator_index = get_ag_indicator_index_for_name("callheld"); 1466 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1467 } 1468 1469 // start audio if needed 1470 hfp_ag_establish_audio_connection(hfp_connection->remote_addr); 1471 break; 1472 } 1473 case HFP_AG_OUTGOING_CALL_RINGING: 1474 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1475 if (!hfp_connection){ 1476 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1477 break; 1478 } 1479 1480 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1481 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1482 hfp_ag_set_callsetup_indicator(); 1483 hfp_ag_transfer_callsetup_state(); 1484 break; 1485 1486 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1487 // get outgoing call 1488 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1489 if (!hfp_connection){ 1490 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1491 } 1492 if (!hfp_connection){ 1493 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1494 break; 1495 } 1496 1497 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1498 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1499 hfp_connection->call_state = HFP_CALL_ACTIVE; 1500 hfp_ag_set_callsetup_indicator(); 1501 hfp_ag_set_call_indicator(); 1502 hfp_ag_transfer_call_state(); 1503 hfp_ag_transfer_callsetup_state(); 1504 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1505 hfp_ag_set_callheld_indicator(); 1506 hfp_ag_transfer_callheld_state(); 1507 } 1508 break; 1509 } 1510 1511 case HFP_AG_CALL_HOLD_USER_BUSY: 1512 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1513 hfp_ag_set_callsetup_indicator(); 1514 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1515 hfp_connection->call_state = HFP_CALL_ACTIVE; 1516 log_info("AG: Call Waiting, User Busy"); 1517 break; 1518 1519 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1520 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1521 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1522 1523 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1524 if (call_held || call_setup_in_progress){ 1525 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1526 1527 } 1528 1529 if (call_setup_in_progress){ 1530 log_info("AG: Call Dropped, Accept new call"); 1531 hfp_ag_set_callsetup_indicator(); 1532 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1533 } else { 1534 log_info("AG: Call Dropped, Resume held call"); 1535 } 1536 if (call_held){ 1537 hfp_ag_set_callheld_indicator(); 1538 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1539 } 1540 1541 hfp_connection->call_state = HFP_CALL_ACTIVE; 1542 break; 1543 } 1544 1545 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1546 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1547 // only update if callsetup changed 1548 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1549 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1550 1551 if (call_setup_in_progress){ 1552 log_info("AG: Call on Hold, Accept new call"); 1553 hfp_ag_set_callsetup_indicator(); 1554 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1555 } else { 1556 log_info("AG: Swap calls"); 1557 } 1558 1559 hfp_ag_set_callheld_indicator(); 1560 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1561 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1562 hfp_connection->call_state = HFP_CALL_ACTIVE; 1563 break; 1564 } 1565 1566 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1567 // Adds a held call to the conversation. 1568 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1569 log_info("AG: Join 3-way-call"); 1570 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1571 hfp_ag_set_callheld_indicator(); 1572 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1573 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1574 } 1575 hfp_connection->call_state = HFP_CALL_ACTIVE; 1576 break; 1577 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1578 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1579 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1580 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1581 hfp_ag_set_call_indicator(); 1582 hfp_ag_set_callheld_indicator(); 1583 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1584 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1585 hfp_connection->call_state = HFP_CALL_IDLE; 1586 break; 1587 1588 default: 1589 break; 1590 } 1591 1592 1593 } 1594 1595 1596 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1597 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1598 if (!active_call) return; 1599 1600 int idx = active_call->index; 1601 hfp_enhanced_call_dir_t dir = active_call->direction; 1602 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1603 hfp_enhanced_call_mode_t mode = active_call->mode; 1604 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1605 uint8_t type = active_call->clip_type; 1606 char * number = active_call->clip_number; 1607 1608 char buffer[100]; 1609 // TODO: check length of a buffer, to fit the MTU 1610 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1611 if (number){ 1612 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ", \"%s\",%u", number, type); 1613 } 1614 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1615 log_info("hfp_ag_send_current_call_status 000 index %d, dir %d, status %d, mode %d, mpty %d, type %d, number %s", idx, dir, status, 1616 mode, mpty, type, number); 1617 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1618 } 1619 1620 static void hfp_run_for_context(hfp_connection_t *hfp_connection){ 1621 1622 log_info("hfp_run_for_context %p", hfp_connection); 1623 1624 if (!hfp_connection) return; 1625 1626 if (!hfp_connection->rfcomm_cid) return; 1627 1628 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1629 log_info("hfp_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1630 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1631 return; 1632 } 1633 1634 if (hfp_connection->send_status_of_current_calls){ 1635 hfp_connection->ok_pending = 0; 1636 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1637 hfp_connection->next_call_index++; 1638 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1639 } else { 1640 hfp_connection->next_call_index = 0; 1641 hfp_connection->ok_pending = 1; 1642 hfp_connection->send_status_of_current_calls = 0; 1643 } 1644 return; 1645 } 1646 1647 if (hfp_connection->ag_notify_incoming_call_waiting){ 1648 hfp_connection->ag_notify_incoming_call_waiting = 0; 1649 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1650 return; 1651 } 1652 1653 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1654 hfp_connection->ok_pending = 0; 1655 hfp_connection->send_error = 0; 1656 hfp_connection->command = HFP_CMD_NONE; 1657 hfp_ag_error(hfp_connection->rfcomm_cid); 1658 return; 1659 } 1660 1661 if (hfp_connection->send_error){ 1662 hfp_connection->send_error = 0; 1663 hfp_connection->command = HFP_CMD_NONE; 1664 hfp_ag_error(hfp_connection->rfcomm_cid); 1665 return; 1666 } 1667 1668 // note: before update AG indicators and ok_pending 1669 if (hfp_connection->send_response_and_hold_status){ 1670 int status = hfp_connection->send_response_and_hold_status - 1; 1671 hfp_connection->send_response_and_hold_status = 0; 1672 hfp_ag_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1673 return; 1674 } 1675 1676 if (hfp_connection->ok_pending){ 1677 hfp_connection->ok_pending = 0; 1678 hfp_connection->command = HFP_CMD_NONE; 1679 hfp_ag_ok(hfp_connection->rfcomm_cid); 1680 return; 1681 } 1682 1683 // update AG indicators 1684 if (hfp_connection->ag_indicators_status_update_bitmap){ 1685 int i; 1686 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1687 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1688 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1689 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1690 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1691 break; 1692 } 1693 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1694 return; 1695 } 1696 } 1697 } 1698 1699 if (hfp_connection->ag_ring){ 1700 hfp_connection->ag_ring = 0; 1701 hfp_connection->command = HFP_CMD_NONE; 1702 hfp_ag_ring(hfp_connection->rfcomm_cid); 1703 return; 1704 } 1705 1706 if (hfp_connection->ag_send_clip){ 1707 hfp_connection->ag_send_clip = 0; 1708 hfp_connection->command = HFP_CMD_NONE; 1709 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1710 return; 1711 } 1712 1713 if (hfp_connection->send_phone_number_for_voice_tag){ 1714 hfp_connection->send_phone_number_for_voice_tag = 0; 1715 hfp_connection->command = HFP_CMD_NONE; 1716 hfp_connection->ok_pending = 1; 1717 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1718 return; 1719 } 1720 1721 if (hfp_connection->send_subscriber_number){ 1722 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1723 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1724 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1725 } else { 1726 hfp_connection->send_subscriber_number = 0; 1727 hfp_connection->next_subscriber_number_to_send = 0; 1728 hfp_ag_ok(hfp_connection->rfcomm_cid); 1729 } 1730 hfp_connection->command = HFP_CMD_NONE; 1731 } 1732 1733 if (hfp_connection->send_microphone_gain){ 1734 hfp_connection->send_microphone_gain = 0; 1735 hfp_connection->command = HFP_CMD_NONE; 1736 hfp_ag_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1737 return; 1738 } 1739 1740 if (hfp_connection->send_speaker_gain){ 1741 hfp_connection->send_speaker_gain = 0; 1742 hfp_connection->command = HFP_CMD_NONE; 1743 hfp_ag_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1744 return; 1745 } 1746 1747 if (hfp_connection->send_ag_status_indicators){ 1748 hfp_connection->send_ag_status_indicators = 0; 1749 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1750 return; 1751 } 1752 1753 int done = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1754 if (!done){ 1755 done = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1756 } 1757 1758 if (!done){ 1759 done = call_setup_state_machine(hfp_connection); 1760 } 1761 1762 if (!done){ 1763 done = hfp_ag_run_for_audio_connection(hfp_connection); 1764 } 1765 1766 if (hfp_connection->command == HFP_CMD_NONE && !done){ 1767 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1768 switch(hfp_connection->state){ 1769 case HFP_W2_DISCONNECT_RFCOMM: 1770 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1771 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1772 break; 1773 default: 1774 break; 1775 } 1776 } 1777 if (done){ 1778 hfp_connection->command = HFP_CMD_NONE; 1779 } 1780 // 1781 if (done) { 1782 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1783 } 1784 } 1785 1786 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1787 int i; 1788 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1789 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1790 if (indicator->uuid == number){ 1791 return indicator; 1792 } 1793 } 1794 return NULL; 1795 } 1796 1797 static void hfp_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1798 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1799 if (!hfp_connection) return; 1800 1801 char last_char = packet[size-1]; 1802 packet[size-1] = 0; 1803 log_info("HFP_RX %s", packet); 1804 packet[size-1] = last_char; 1805 1806 int pos; 1807 for (pos = 0; pos < size ; pos++){ 1808 hfp_parse(hfp_connection, packet[pos], 0); 1809 } 1810 hfp_generic_status_indicator_t * indicator; 1811 int value; 1812 switch(hfp_connection->command){ 1813 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1814 if (hfp_ag_response_and_hold_active){ 1815 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1816 } 1817 hfp_connection->ok_pending = 1; 1818 break; 1819 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1820 value = atoi((char *)&hfp_connection->line_buffer[0]); 1821 log_info("HF Response and Hold: %u", value); 1822 switch(value){ 1823 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1824 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1825 break; 1826 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1827 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1828 break; 1829 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1830 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1831 break; 1832 default: 1833 break; 1834 } 1835 hfp_connection->ok_pending = 1; 1836 break; 1837 case HFP_CMD_HF_INDICATOR_STATUS: 1838 hfp_connection->command = HFP_CMD_NONE; 1839 // find indicator by assigned number 1840 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1841 if (!indicator){ 1842 hfp_connection->send_error = 1; 1843 break; 1844 } 1845 value = atoi((char *)&hfp_connection->line_buffer[0]); 1846 switch (indicator->uuid){ 1847 case 1: // enhanced security 1848 if (value > 1) { 1849 hfp_connection->send_error = 1; 1850 return; 1851 } 1852 log_info("HF Indicator 'enhanced security' set to %u", value); 1853 break; 1854 case 2: // battery level 1855 if (value > 100){ 1856 hfp_connection->send_error = 1; 1857 return; 1858 } 1859 log_info("HF Indicator 'battery' set to %u", value); 1860 break; 1861 default: 1862 log_info("HF Indicator unknown set to %u", value); 1863 break; 1864 } 1865 hfp_connection->ok_pending = 1; 1866 break; 1867 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1868 // expected by SLC state machine 1869 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1870 hfp_connection->send_ag_indicators_segment = 0; 1871 hfp_connection->send_ag_status_indicators = 1; 1872 break; 1873 case HFP_CMD_LIST_CURRENT_CALLS: 1874 hfp_connection->command = HFP_CMD_NONE; 1875 hfp_connection->next_call_index = 0; 1876 hfp_connection->send_status_of_current_calls = 1; 1877 break; 1878 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1879 if (subscriber_numbers_count == 0){ 1880 hfp_ag_ok(hfp_connection->rfcomm_cid); 1881 break; 1882 } 1883 hfp_connection->next_subscriber_number_to_send = 0; 1884 hfp_connection->send_subscriber_number = 1; 1885 break; 1886 case HFP_CMD_TRANSMIT_DTMF_CODES: 1887 hfp_connection->command = HFP_CMD_NONE; 1888 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &hfp_connection->line_buffer[0]); 1889 break; 1890 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1891 hfp_connection->command = HFP_CMD_NONE; 1892 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1893 break; 1894 case HFP_CMD_TURN_OFF_EC_AND_NR: 1895 hfp_connection->command = HFP_CMD_NONE; 1896 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1897 hfp_connection->ok_pending = 1; 1898 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1899 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1900 } else { 1901 hfp_connection->send_error = 1; 1902 } 1903 break; 1904 case HFP_CMD_CALL_ANSWERED: 1905 hfp_connection->command = HFP_CMD_NONE; 1906 log_info("HFP: ATA"); 1907 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1908 break; 1909 case HFP_CMD_HANG_UP_CALL: 1910 hfp_connection->command = HFP_CMD_NONE; 1911 hfp_connection->ok_pending = 1; 1912 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1913 break; 1914 case HFP_CMD_CALL_HOLD: { 1915 // TODO: fully implement this 1916 log_error("HFP: unhandled call hold type %c", hfp_connection->line_buffer[0]); 1917 hfp_connection->command = HFP_CMD_NONE; 1918 hfp_connection->ok_pending = 1; 1919 hfp_connection->call_index = 0; 1920 1921 if (hfp_connection->line_buffer[1] != '\0'){ 1922 hfp_connection->call_index = atoi((char *)&hfp_connection->line_buffer[1]); 1923 } 1924 1925 switch (hfp_connection->line_buffer[0]){ 1926 case '0': 1927 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1928 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1929 break; 1930 case '1': 1931 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1932 // Where both a held and a waiting call exist, the above procedures shall apply to the 1933 // waiting call (i.e., not to the held call) in conflicting situation. 1934 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1935 break; 1936 case '2': 1937 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1938 // Where both a held and a waiting call exist, the above procedures shall apply to the 1939 // waiting call (i.e., not to the held call) in conflicting situation. 1940 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1941 break; 1942 case '3': 1943 // Adds a held call to the conversation. 1944 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1945 break; 1946 case '4': 1947 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1948 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1949 break; 1950 default: 1951 break; 1952 } 1953 break; 1954 } 1955 case HFP_CMD_CALL_PHONE_NUMBER: 1956 hfp_connection->command = HFP_CMD_NONE; 1957 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1958 break; 1959 case HFP_CMD_REDIAL_LAST_NUMBER: 1960 hfp_connection->command = HFP_CMD_NONE; 1961 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1962 break; 1963 case HFP_CMD_ENABLE_CLIP: 1964 hfp_connection->command = HFP_CMD_NONE; 1965 hfp_connection->clip_enabled = hfp_connection->line_buffer[8] != '0'; 1966 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1967 hfp_connection->ok_pending = 1; 1968 break; 1969 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1970 hfp_connection->command = HFP_CMD_NONE; 1971 hfp_connection->call_waiting_notification_enabled = hfp_connection->line_buffer[8] != '0'; 1972 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1973 hfp_connection->ok_pending = 1; 1974 break; 1975 case HFP_CMD_SET_SPEAKER_GAIN: 1976 hfp_connection->command = HFP_CMD_NONE; 1977 hfp_connection->ok_pending = 1; 1978 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 1979 break; 1980 case HFP_CMD_SET_MICROPHONE_GAIN: 1981 hfp_connection->command = HFP_CMD_NONE; 1982 hfp_connection->ok_pending = 1; 1983 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 1984 break; 1985 default: 1986 break; 1987 } 1988 } 1989 1990 static void hfp_run(void){ 1991 btstack_linked_list_iterator_t it; 1992 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1993 while (btstack_linked_list_iterator_has_next(&it)){ 1994 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1995 hfp_run_for_context(hfp_connection); 1996 } 1997 } 1998 1999 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2000 switch (packet_type){ 2001 case RFCOMM_DATA_PACKET: 2002 hfp_handle_rfcomm_data(packet_type, channel, packet, size); 2003 break; 2004 case HCI_EVENT_PACKET: 2005 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2006 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2007 hfp_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2008 return; 2009 } 2010 hfp_handle_hci_event(packet_type, channel, packet, size); 2011 break; 2012 default: 2013 break; 2014 } 2015 2016 hfp_run(); 2017 } 2018 2019 2020 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2021 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2022 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2023 return; 2024 } 2025 int i; 2026 hfp_codecs_nr = codecs_nr; 2027 for (i=0; i < codecs_nr; i++){ 2028 hfp_codecs[i] = codecs[i]; 2029 } 2030 } 2031 2032 void hfp_ag_init_supported_features(uint32_t supported_features){ 2033 hfp_supported_features = supported_features; 2034 } 2035 2036 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2037 hfp_ag_indicators_nr = ag_indicators_nr; 2038 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2039 } 2040 2041 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2042 if (hf_indicators_nr > HFP_MAX_NUM_HF_INDICATORS) return; 2043 hfp_generic_status_indicators_nr = hf_indicators_nr; 2044 memcpy(hfp_generic_status_indicators, hf_indicators, hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2045 } 2046 2047 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2048 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2049 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2050 } 2051 2052 2053 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2054 // register for HCI events 2055 hci_event_callback_registration.callback = &packet_handler; 2056 hci_add_event_handler(&hci_event_callback_registration); 2057 2058 rfcomm_register_service(&packet_handler, rfcomm_channel_nr, 0xffff); 2059 2060 hfp_ag_response_and_hold_active = 0; 2061 subscriber_numbers = NULL; 2062 subscriber_numbers_count = 0; 2063 2064 hfp_set_packet_handler_for_rfcomm_connections(&packet_handler); 2065 2066 hfp_gsm_init(); 2067 } 2068 2069 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2070 hfp_establish_service_level_connection(bd_addr, SDP_Handsfree); 2071 } 2072 2073 void hfp_ag_release_service_level_connection(bd_addr_t bd_addr){ 2074 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2075 hfp_release_service_level_connection(hfp_connection); 2076 hfp_run_for_context(hfp_connection); 2077 } 2078 2079 void hfp_ag_report_extended_audio_gateway_error_result_code(bd_addr_t bd_addr, hfp_cme_error_t error){ 2080 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2081 if (!hfp_connection){ 2082 log_error("HFP HF: hfp_connection doesn't exist."); 2083 return; 2084 } 2085 hfp_connection->extended_audio_gateway_error = 0; 2086 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2087 return; 2088 } 2089 hfp_connection->extended_audio_gateway_error = error; 2090 hfp_run_for_context(hfp_connection); 2091 } 2092 2093 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2094 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2095 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2096 2097 hfp_connection->establish_audio_connection = 1; 2098 2099 if (!has_codec_negotiation_feature(hfp_connection)){ 2100 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using defaults"); 2101 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2102 } 2103 2104 switch (hfp_connection->codecs_state){ 2105 case HFP_CODECS_IDLE: 2106 case HFP_CODECS_RECEIVED_LIST: 2107 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2108 case HFP_CODECS_ERROR: 2109 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2110 break; 2111 default: 2112 break; 2113 } 2114 } 2115 2116 void hfp_ag_establish_audio_connection(bd_addr_t bd_addr){ 2117 hfp_ag_establish_service_level_connection(bd_addr); 2118 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2119 2120 hfp_connection->establish_audio_connection = 0; 2121 hfp_ag_setup_audio_connection(hfp_connection); 2122 hfp_run_for_context(hfp_connection); 2123 } 2124 2125 void hfp_ag_release_audio_connection(bd_addr_t bd_addr){ 2126 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2127 hfp_release_audio_connection(hfp_connection); 2128 hfp_run_for_context(hfp_connection); 2129 } 2130 2131 /** 2132 * @brief Enable in-band ring tone 2133 */ 2134 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2135 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2136 return; 2137 } 2138 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2139 2140 btstack_linked_list_iterator_t it; 2141 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2142 while (btstack_linked_list_iterator_has_next(&it)){ 2143 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2144 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2145 hfp_run_for_context(hfp_connection); 2146 } 2147 } 2148 2149 /** 2150 * @brief Called from GSM 2151 */ 2152 void hfp_ag_incoming_call(void){ 2153 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2154 } 2155 2156 /** 2157 * @brief number is stored. 2158 */ 2159 void hfp_ag_set_clip(uint8_t type, const char * number){ 2160 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2161 } 2162 2163 void hfp_ag_call_dropped(void){ 2164 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2165 } 2166 2167 // call from AG UI 2168 void hfp_ag_answer_incoming_call(void){ 2169 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2170 } 2171 2172 void hfp_ag_join_held_call(void){ 2173 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2174 } 2175 2176 void hfp_ag_terminate_call(void){ 2177 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2178 } 2179 2180 void hfp_ag_outgoing_call_ringing(void){ 2181 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2182 } 2183 2184 void hfp_ag_outgoing_call_established(void){ 2185 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2186 } 2187 2188 void hfp_ag_outgoing_call_rejected(void){ 2189 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2190 } 2191 2192 void hfp_ag_outgoing_call_accepted(void){ 2193 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2194 } 2195 2196 void hfp_ag_hold_incoming_call(void){ 2197 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2198 } 2199 2200 void hfp_ag_accept_held_incoming_call(void) { 2201 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2202 } 2203 2204 void hfp_ag_reject_held_incoming_call(void){ 2205 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2206 } 2207 2208 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2209 int indicator_index = get_ag_indicator_index_for_name(name); 2210 if (indicator_index < 0) return; 2211 hfp_ag_indicators[indicator_index].status = value; 2212 2213 2214 btstack_linked_list_iterator_t it; 2215 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2216 while (btstack_linked_list_iterator_has_next(&it)){ 2217 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2218 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2219 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2220 continue; 2221 } 2222 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2223 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2224 hfp_run_for_context(hfp_connection); 2225 } 2226 } 2227 2228 void hfp_ag_set_registration_status(int status){ 2229 hfp_ag_set_ag_indicator("service", status); 2230 } 2231 2232 void hfp_ag_set_signal_strength(int strength){ 2233 hfp_ag_set_ag_indicator("signal", strength); 2234 } 2235 2236 void hfp_ag_set_roaming_status(int status){ 2237 hfp_ag_set_ag_indicator("roam", status); 2238 } 2239 2240 void hfp_ag_set_battery_level(int level){ 2241 hfp_ag_set_ag_indicator("battchg", level); 2242 } 2243 2244 void hfp_ag_activate_voice_recognition(bd_addr_t bd_addr, int activate){ 2245 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2246 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2247 2248 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2249 log_info("AG cannot acivate voice recognition - not supported by HF"); 2250 return; 2251 } 2252 2253 if (activate){ 2254 hfp_ag_establish_audio_connection(bd_addr); 2255 } 2256 2257 hfp_connection->ag_activate_voice_recognition = activate; 2258 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2259 hfp_run_for_context(hfp_connection); 2260 } 2261 2262 void hfp_ag_set_microphone_gain(bd_addr_t bd_addr, int gain){ 2263 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2264 if (hfp_connection->microphone_gain != gain){ 2265 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2266 hfp_connection->microphone_gain = gain; 2267 hfp_connection->send_microphone_gain = 1; 2268 } 2269 hfp_run_for_context(hfp_connection); 2270 } 2271 2272 void hfp_ag_set_speaker_gain(bd_addr_t bd_addr, int gain){ 2273 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2274 if (hfp_connection->speaker_gain != gain){ 2275 hfp_connection->speaker_gain = gain; 2276 hfp_connection->send_speaker_gain = 1; 2277 } 2278 hfp_run_for_context(hfp_connection); 2279 } 2280 2281 void hfp_ag_send_phone_number_for_voice_tag(bd_addr_t bd_addr, const char * number){ 2282 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2283 hfp_ag_set_clip(0, number); 2284 hfp_connection->send_phone_number_for_voice_tag = 1; 2285 } 2286 2287 void hfp_ag_reject_phone_number_for_voice_tag(bd_addr_t bd_addr){ 2288 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2289 hfp_connection->send_error = 1; 2290 } 2291 2292 void hfp_ag_send_dtmf_code_done(bd_addr_t bd_addr){ 2293 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2294 hfp_connection->ok_pending = 1; 2295 } 2296 2297 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2298 subscriber_numbers = numbers; 2299 subscriber_numbers_count = numbers_count; 2300 } 2301 2302 void hfp_ag_clear_last_dialed_number(void){ 2303 hfp_gsm_clear_last_dialed_number(); 2304 } 2305 2306 void hfp_ag_notify_incoming_call_waiting(bd_addr_t bd_addr){ 2307 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2308 if (!hfp_connection->call_waiting_notification_enabled) return; 2309 2310 hfp_connection->ag_notify_incoming_call_waiting = 1; 2311 hfp_run_for_context(hfp_connection); 2312 } 2313 2314