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