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 + 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 }; 1038 indicator->status = hfp_gsm_callsetup_status(); 1039 } 1040 1041 static void hfp_ag_set_callheld_indicator(void){ 1042 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1043 if (!indicator){ 1044 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1045 }; 1046 indicator->status = hfp_gsm_callheld_status(); 1047 } 1048 1049 static void hfp_ag_set_call_indicator(void){ 1050 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1051 if (!indicator){ 1052 log_error("hfp_ag_set_call_state: call indicator is missing"); 1053 }; 1054 indicator->status = hfp_gsm_call_status(); 1055 } 1056 1057 static void hfp_ag_stop_ringing(void){ 1058 btstack_linked_list_iterator_t it; 1059 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1060 while (btstack_linked_list_iterator_has_next(&it)){ 1061 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1062 if (hfp_connection->call_state != HFP_CALL_RINGING && 1063 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1064 hfp_ag_hf_stop_ringing(hfp_connection); 1065 } 1066 } 1067 1068 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1069 btstack_linked_list_iterator_t it; 1070 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1071 while (btstack_linked_list_iterator_has_next(&it)){ 1072 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1073 if (hfp_connection->call_state == call_state) return hfp_connection; 1074 } 1075 return NULL; 1076 } 1077 1078 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1079 btstack_linked_list_iterator_t it; 1080 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1081 while (btstack_linked_list_iterator_has_next(&it)){ 1082 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1083 hfp_connection->send_response_and_hold_status = state + 1; 1084 } 1085 } 1086 1087 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1088 int indicator_index; 1089 switch (hfp_connection->call_state){ 1090 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1091 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1092 // we got event: audio hfp_connection established 1093 hfp_timeout_start(hfp_connection); 1094 hfp_connection->ag_ring = 1; 1095 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1096 hfp_connection->call_state = HFP_CALL_RINGING; 1097 hfp_connection->call_state = HFP_CALL_RINGING; 1098 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 1099 break; 1100 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1101 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1102 // we got event: audio hfp_connection established 1103 hfp_connection->call_state = HFP_CALL_ACTIVE; 1104 break; 1105 case HFP_CALL_W2_SEND_CALL_WAITING: 1106 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1107 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1108 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1109 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1110 break; 1111 default: 1112 break; 1113 } 1114 return 0; 1115 } 1116 // hfp_connection is used to identify originating HF 1117 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1118 int indicator_index; 1119 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1120 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1121 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1122 1123 //printf("hfp_ag_call_sm event %d \n", event); 1124 switch (event){ 1125 case HFP_AG_INCOMING_CALL: 1126 switch (hfp_gsm_call_status()){ 1127 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1128 switch (hfp_gsm_callsetup_status()){ 1129 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1130 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1131 hfp_ag_set_callsetup_indicator(); 1132 hfp_ag_trigger_incoming_call(); 1133 printf("AG rings\n"); 1134 break; 1135 default: 1136 break; 1137 } 1138 break; 1139 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1140 switch (hfp_gsm_callsetup_status()){ 1141 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1142 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1143 hfp_ag_set_callsetup_indicator(); 1144 hfp_ag_trigger_incoming_call(); 1145 printf("AG call waiting\n"); 1146 break; 1147 default: 1148 break; 1149 } 1150 break; 1151 } 1152 break; 1153 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1154 switch (hfp_gsm_call_status()){ 1155 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1156 switch (hfp_gsm_callsetup_status()){ 1157 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1158 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1159 hfp_ag_set_call_indicator(); 1160 hfp_ag_set_callsetup_indicator(); 1161 hfp_ag_ag_accept_call(); 1162 printf("AG answers call, accept call by GSM\n"); 1163 break; 1164 default: 1165 break; 1166 } 1167 break; 1168 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1169 switch (hfp_gsm_callsetup_status()){ 1170 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1171 printf("AG: current call is placed on hold, incoming call gets active\n"); 1172 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1173 hfp_ag_set_callsetup_indicator(); 1174 hfp_ag_set_callheld_indicator(); 1175 hfp_ag_transfer_callsetup_state(); 1176 hfp_ag_transfer_callheld_state(); 1177 break; 1178 default: 1179 break; 1180 } 1181 break; 1182 } 1183 break; 1184 1185 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1186 switch (hfp_gsm_call_status()){ 1187 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1188 switch (hfp_gsm_callheld_status()){ 1189 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1190 printf("AG: joining held call with active call\n"); 1191 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1192 hfp_ag_set_callheld_indicator(); 1193 hfp_ag_transfer_callheld_state(); 1194 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1195 break; 1196 default: 1197 break; 1198 } 1199 break; 1200 default: 1201 break; 1202 } 1203 break; 1204 1205 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1206 switch (hfp_gsm_call_status()){ 1207 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1208 switch (hfp_gsm_callsetup_status()){ 1209 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1210 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1211 hfp_ag_set_callsetup_indicator(); 1212 hfp_ag_set_call_indicator(); 1213 hfp_ag_hf_accept_call(hfp_connection); 1214 printf("HF answers call, accept call by GSM\n"); 1215 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_ANSWERED); 1216 break; 1217 default: 1218 break; 1219 } 1220 break; 1221 default: 1222 break; 1223 } 1224 break; 1225 1226 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1227 switch (hfp_gsm_call_status()){ 1228 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1229 switch (hfp_gsm_callsetup_status()){ 1230 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1231 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1232 hfp_ag_response_and_hold_active = 1; 1233 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1234 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1235 // as with regualr call 1236 hfp_ag_set_call_indicator(); 1237 hfp_ag_set_callsetup_indicator(); 1238 hfp_ag_ag_accept_call(); 1239 printf("AG response and hold - hold by AG\n"); 1240 break; 1241 default: 1242 break; 1243 } 1244 break; 1245 default: 1246 break; 1247 } 1248 break; 1249 1250 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1251 switch (hfp_gsm_call_status()){ 1252 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1253 switch (hfp_gsm_callsetup_status()){ 1254 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1255 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1256 hfp_ag_response_and_hold_active = 1; 1257 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1258 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1259 // as with regualr call 1260 hfp_ag_set_call_indicator(); 1261 hfp_ag_set_callsetup_indicator(); 1262 hfp_ag_hf_accept_call(hfp_connection); 1263 printf("AG response and hold - hold by HF\n"); 1264 break; 1265 default: 1266 break; 1267 } 1268 break; 1269 default: 1270 break; 1271 } 1272 break; 1273 1274 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1275 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1276 if (!hfp_ag_response_and_hold_active) break; 1277 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1278 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1279 hfp_ag_response_and_hold_active = 0; 1280 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1281 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1282 printf("Held Call accepted and active\n"); 1283 break; 1284 1285 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1286 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1287 if (!hfp_ag_response_and_hold_active) break; 1288 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1289 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1290 hfp_ag_response_and_hold_active = 0; 1291 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1292 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1293 // from terminate by ag 1294 hfp_ag_set_call_indicator(); 1295 hfp_ag_trigger_terminate_call(); 1296 break; 1297 1298 case HFP_AG_TERMINATE_CALL_BY_HF: 1299 switch (hfp_gsm_call_status()){ 1300 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1301 switch (hfp_gsm_callsetup_status()){ 1302 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1303 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1304 hfp_ag_set_callsetup_indicator(); 1305 hfp_ag_transfer_callsetup_state(); 1306 hfp_ag_trigger_reject_call(); 1307 printf("HF Rejected Incoming call, AG terminate call\n"); 1308 break; 1309 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1310 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1311 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1312 hfp_ag_set_callsetup_indicator(); 1313 hfp_ag_transfer_callsetup_state(); 1314 printf("AG terminate outgoing call process\n"); 1315 default: 1316 break; 1317 } 1318 break; 1319 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1320 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1321 hfp_ag_set_call_indicator(); 1322 hfp_ag_transfer_call_state(); 1323 hfp_connection->call_state = HFP_CALL_IDLE; 1324 printf("AG terminate call\n"); 1325 break; 1326 } 1327 break; 1328 1329 case HFP_AG_TERMINATE_CALL_BY_AG: 1330 switch (hfp_gsm_call_status()){ 1331 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1332 switch (hfp_gsm_callsetup_status()){ 1333 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1334 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1335 hfp_ag_set_callsetup_indicator(); 1336 hfp_ag_trigger_reject_call(); 1337 printf("AG Rejected Incoming call, AG terminate call\n"); 1338 break; 1339 default: 1340 break; 1341 } 1342 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1343 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1344 hfp_ag_set_callsetup_indicator(); 1345 hfp_ag_set_call_indicator(); 1346 hfp_ag_trigger_terminate_call(); 1347 printf("AG terminate call\n"); 1348 break; 1349 default: 1350 break; 1351 } 1352 break; 1353 case HFP_AG_CALL_DROPPED: 1354 switch (hfp_gsm_call_status()){ 1355 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1356 switch (hfp_gsm_callsetup_status()){ 1357 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1358 hfp_ag_stop_ringing(); 1359 printf("Incoming call interrupted\n"); 1360 break; 1361 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1362 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1363 printf("Outgoing call interrupted\n"); 1364 printf("AG notify call dropped\n"); 1365 break; 1366 default: 1367 break; 1368 } 1369 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1370 hfp_ag_set_callsetup_indicator(); 1371 hfp_ag_transfer_callsetup_state(); 1372 break; 1373 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1374 if (hfp_ag_response_and_hold_active) { 1375 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1376 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1377 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1378 } 1379 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1380 hfp_ag_set_callsetup_indicator(); 1381 hfp_ag_set_call_indicator(); 1382 hfp_ag_trigger_terminate_call(); 1383 printf("AG notify call dropped\n"); 1384 break; 1385 default: 1386 break; 1387 } 1388 break; 1389 1390 case HFP_AG_OUTGOING_CALL_INITIATED: 1391 // directly reject call if number of free slots is exceeded 1392 if (!hfp_gsm_call_possible()){ 1393 hfp_connection->send_error = 1; 1394 hfp_run_for_context(hfp_connection); 1395 break; 1396 } 1397 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1398 1399 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1400 1401 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1402 break; 1403 1404 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1405 // directly reject call if number of free slots is exceeded 1406 if (!hfp_gsm_call_possible()){ 1407 hfp_connection->send_error = 1; 1408 hfp_run_for_context(hfp_connection); 1409 break; 1410 } 1411 1412 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1413 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1414 1415 printf("\nRedial last number"); 1416 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1417 1418 if (strlen(last_dialed_number) > 0){ 1419 printf("\nLast number exists: accept call"); 1420 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1421 } else { 1422 printf("\nLast number missing: reject call"); 1423 hfp_ag_outgoing_call_rejected(); 1424 } 1425 break; 1426 } 1427 case HFP_AG_OUTGOING_CALL_REJECTED: 1428 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1429 if (!hfp_connection){ 1430 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1431 break; 1432 } 1433 1434 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1435 hfp_connection->call_state = HFP_CALL_IDLE; 1436 hfp_connection->send_error = 1; 1437 hfp_run_for_context(hfp_connection); 1438 break; 1439 1440 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1441 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1442 if (!hfp_connection){ 1443 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1444 break; 1445 } 1446 1447 hfp_connection->ok_pending = 1; 1448 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1449 1450 // trigger callsetup to be 1451 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1452 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1453 1454 hfp_ag_set_callsetup_indicator(); 1455 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1456 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1457 1458 // put current call on hold if active 1459 if (put_call_on_hold){ 1460 printf("AG putting current call on hold for new outgoing call\n"); 1461 hfp_ag_set_callheld_indicator(); 1462 indicator_index = get_ag_indicator_index_for_name("callheld"); 1463 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1464 } 1465 1466 // start audio if needed 1467 hfp_ag_establish_audio_connection(hfp_connection->remote_addr); 1468 break; 1469 } 1470 case HFP_AG_OUTGOING_CALL_RINGING: 1471 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1472 if (!hfp_connection){ 1473 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1474 break; 1475 } 1476 1477 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1478 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1479 hfp_ag_set_callsetup_indicator(); 1480 hfp_ag_transfer_callsetup_state(); 1481 break; 1482 1483 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1484 // get outgoing call 1485 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1486 if (!hfp_connection){ 1487 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1488 } 1489 if (!hfp_connection){ 1490 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1491 break; 1492 } 1493 1494 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1495 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1496 hfp_connection->call_state = HFP_CALL_ACTIVE; 1497 hfp_ag_set_callsetup_indicator(); 1498 hfp_ag_set_call_indicator(); 1499 hfp_ag_transfer_call_state(); 1500 hfp_ag_transfer_callsetup_state(); 1501 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1502 hfp_ag_set_callheld_indicator(); 1503 hfp_ag_transfer_callheld_state(); 1504 } 1505 break; 1506 } 1507 1508 case HFP_AG_CALL_HOLD_USER_BUSY: 1509 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1510 hfp_ag_set_callsetup_indicator(); 1511 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1512 hfp_connection->call_state = HFP_CALL_ACTIVE; 1513 printf("AG: Call Waiting, User Busy\n"); 1514 break; 1515 1516 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1517 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1518 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1519 1520 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1521 if (call_held || call_setup_in_progress){ 1522 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1523 1524 } 1525 1526 if (call_setup_in_progress){ 1527 printf("AG: Call Dropped, Accept new call\n"); 1528 hfp_ag_set_callsetup_indicator(); 1529 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1530 } else { 1531 printf("AG: Call Dropped, Resume held call\n"); 1532 } 1533 if (call_held){ 1534 hfp_ag_set_callheld_indicator(); 1535 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1536 } 1537 1538 hfp_connection->call_state = HFP_CALL_ACTIVE; 1539 break; 1540 } 1541 1542 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1543 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1544 // only update if callsetup changed 1545 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1546 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1547 1548 if (call_setup_in_progress){ 1549 printf("AG: Call on Hold, Accept new call\n"); 1550 hfp_ag_set_callsetup_indicator(); 1551 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1552 } else { 1553 printf("AG: Swap calls\n"); 1554 } 1555 1556 hfp_ag_set_callheld_indicator(); 1557 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1558 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1559 hfp_connection->call_state = HFP_CALL_ACTIVE; 1560 break; 1561 } 1562 1563 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1564 // Adds a held call to the conversation. 1565 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1566 printf("AG: Join 3-way-call\n"); 1567 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1568 hfp_ag_set_callheld_indicator(); 1569 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1570 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1571 } 1572 hfp_connection->call_state = HFP_CALL_ACTIVE; 1573 break; 1574 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1575 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1576 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1577 printf("AG: Transfer call -> Connect two calls and disconnect\n"); 1578 hfp_ag_set_call_indicator(); 1579 hfp_ag_set_callheld_indicator(); 1580 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1581 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1582 hfp_connection->call_state = HFP_CALL_IDLE; 1583 break; 1584 1585 default: 1586 break; 1587 } 1588 1589 1590 } 1591 1592 1593 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1594 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1595 if (!active_call) return; 1596 1597 int idx = active_call->index; 1598 hfp_enhanced_call_dir_t dir = active_call->direction; 1599 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1600 hfp_enhanced_call_mode_t mode = active_call->mode; 1601 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1602 uint8_t type = active_call->clip_type; 1603 char * number = active_call->clip_number; 1604 1605 char buffer[100]; 1606 // TODO: check length of a buffer, to fit the MTU 1607 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1608 if (number){ 1609 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ", \"%s\",%u", number, type); 1610 } 1611 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1612 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, 1613 mode, mpty, type, number); 1614 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1615 } 1616 1617 static void hfp_run_for_context(hfp_connection_t *hfp_connection){ 1618 1619 log_info("hfp_run_for_context %p", hfp_connection); 1620 1621 if (!hfp_connection) return; 1622 1623 if (!hfp_connection->rfcomm_cid) return; 1624 1625 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1626 log_info("hfp_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1627 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1628 return; 1629 } 1630 1631 if (hfp_connection->send_status_of_current_calls){ 1632 hfp_connection->ok_pending = 0; 1633 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1634 hfp_connection->next_call_index++; 1635 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1636 } else { 1637 hfp_connection->next_call_index = 0; 1638 hfp_connection->ok_pending = 1; 1639 hfp_connection->send_status_of_current_calls = 0; 1640 } 1641 return; 1642 } 1643 1644 if (hfp_connection->ag_notify_incoming_call_waiting){ 1645 hfp_connection->ag_notify_incoming_call_waiting = 0; 1646 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1647 return; 1648 } 1649 1650 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1651 hfp_connection->ok_pending = 0; 1652 hfp_connection->send_error = 0; 1653 hfp_connection->command = HFP_CMD_NONE; 1654 hfp_ag_error(hfp_connection->rfcomm_cid); 1655 return; 1656 } 1657 1658 if (hfp_connection->send_error){ 1659 hfp_connection->send_error = 0; 1660 hfp_connection->command = HFP_CMD_NONE; 1661 hfp_ag_error(hfp_connection->rfcomm_cid); 1662 return; 1663 } 1664 1665 // note: before update AG indicators and ok_pending 1666 if (hfp_connection->send_response_and_hold_status){ 1667 int status = hfp_connection->send_response_and_hold_status - 1; 1668 hfp_connection->send_response_and_hold_status = 0; 1669 hfp_ag_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1670 return; 1671 } 1672 1673 if (hfp_connection->ok_pending){ 1674 hfp_connection->ok_pending = 0; 1675 hfp_connection->command = HFP_CMD_NONE; 1676 hfp_ag_ok(hfp_connection->rfcomm_cid); 1677 return; 1678 } 1679 1680 // update AG indicators 1681 if (hfp_connection->ag_indicators_status_update_bitmap){ 1682 int i; 1683 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1684 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1685 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1686 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1687 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1688 break; 1689 } 1690 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1691 return; 1692 } 1693 } 1694 } 1695 1696 if (hfp_connection->ag_ring){ 1697 hfp_connection->ag_ring = 0; 1698 hfp_connection->command = HFP_CMD_NONE; 1699 hfp_ag_ring(hfp_connection->rfcomm_cid); 1700 return; 1701 } 1702 1703 if (hfp_connection->ag_send_clip){ 1704 hfp_connection->ag_send_clip = 0; 1705 hfp_connection->command = HFP_CMD_NONE; 1706 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1707 return; 1708 } 1709 1710 if (hfp_connection->send_phone_number_for_voice_tag){ 1711 hfp_connection->send_phone_number_for_voice_tag = 0; 1712 hfp_connection->command = HFP_CMD_NONE; 1713 hfp_connection->ok_pending = 1; 1714 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1715 return; 1716 } 1717 1718 if (hfp_connection->send_subscriber_number){ 1719 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1720 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1721 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1722 } else { 1723 hfp_connection->send_subscriber_number = 0; 1724 hfp_connection->next_subscriber_number_to_send = 0; 1725 hfp_ag_ok(hfp_connection->rfcomm_cid); 1726 } 1727 hfp_connection->command = HFP_CMD_NONE; 1728 } 1729 1730 if (hfp_connection->send_microphone_gain){ 1731 hfp_connection->send_microphone_gain = 0; 1732 hfp_connection->command = HFP_CMD_NONE; 1733 hfp_ag_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1734 return; 1735 } 1736 1737 if (hfp_connection->send_speaker_gain){ 1738 hfp_connection->send_speaker_gain = 0; 1739 hfp_connection->command = HFP_CMD_NONE; 1740 hfp_ag_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1741 return; 1742 } 1743 1744 if (hfp_connection->send_ag_status_indicators){ 1745 hfp_connection->send_ag_status_indicators = 0; 1746 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1747 return; 1748 } 1749 1750 int done = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1751 if (!done){ 1752 done = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1753 } 1754 1755 if (!done){ 1756 done = call_setup_state_machine(hfp_connection); 1757 } 1758 1759 if (!done){ 1760 done = hfp_ag_run_for_audio_connection(hfp_connection); 1761 } 1762 1763 if (hfp_connection->command == HFP_CMD_NONE && !done){ 1764 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1765 switch(hfp_connection->state){ 1766 case HFP_W2_DISCONNECT_RFCOMM: 1767 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1768 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1769 break; 1770 default: 1771 break; 1772 } 1773 } 1774 if (done){ 1775 hfp_connection->command = HFP_CMD_NONE; 1776 } 1777 // 1778 if (done) { 1779 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1780 } 1781 } 1782 1783 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1784 int i; 1785 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1786 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1787 if (indicator->uuid == number){ 1788 return indicator; 1789 } 1790 } 1791 return NULL; 1792 } 1793 1794 static void hfp_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1795 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1796 if (!hfp_connection) return; 1797 1798 char last_char = packet[size-1]; 1799 packet[size-1] = 0; 1800 log_info("HFP_RX %s", packet); 1801 packet[size-1] = last_char; 1802 1803 int pos; 1804 for (pos = 0; pos < size ; pos++){ 1805 hfp_parse(hfp_connection, packet[pos], 0); 1806 } 1807 hfp_generic_status_indicator_t * indicator; 1808 int value; 1809 switch(hfp_connection->command){ 1810 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1811 if (hfp_ag_response_and_hold_active){ 1812 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1813 } 1814 hfp_connection->ok_pending = 1; 1815 break; 1816 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1817 value = atoi((char *)&hfp_connection->line_buffer[0]); 1818 printf("HF Response and Hold: %u\n", value); 1819 switch(value){ 1820 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1821 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1822 break; 1823 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1824 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1825 break; 1826 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1827 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1828 break; 1829 default: 1830 break; 1831 } 1832 hfp_connection->ok_pending = 1; 1833 break; 1834 case HFP_CMD_HF_INDICATOR_STATUS: 1835 hfp_connection->command = HFP_CMD_NONE; 1836 // find indicator by assigned number 1837 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1838 if (!indicator){ 1839 hfp_connection->send_error = 1; 1840 break; 1841 } 1842 value = atoi((char *)&hfp_connection->line_buffer[0]); 1843 switch (indicator->uuid){ 1844 case 1: // enhanced security 1845 if (value > 1) { 1846 hfp_connection->send_error = 1; 1847 return; 1848 } 1849 printf("HF Indicator 'enhanced security' set to %u\n", value); 1850 break; 1851 case 2: // battery level 1852 if (value > 100){ 1853 hfp_connection->send_error = 1; 1854 return; 1855 } 1856 printf("HF Indicator 'battery' set to %u\n", value); 1857 break; 1858 default: 1859 printf("HF Indicator unknown set to %u\n", value); 1860 break; 1861 } 1862 hfp_connection->ok_pending = 1; 1863 break; 1864 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1865 // expected by SLC state machine 1866 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1867 hfp_connection->send_ag_indicators_segment = 0; 1868 hfp_connection->send_ag_status_indicators = 1; 1869 break; 1870 case HFP_CMD_LIST_CURRENT_CALLS: 1871 hfp_connection->command = HFP_CMD_NONE; 1872 hfp_connection->next_call_index = 0; 1873 hfp_connection->send_status_of_current_calls = 1; 1874 break; 1875 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1876 if (subscriber_numbers_count == 0){ 1877 hfp_ag_ok(hfp_connection->rfcomm_cid); 1878 break; 1879 } 1880 hfp_connection->next_subscriber_number_to_send = 0; 1881 hfp_connection->send_subscriber_number = 1; 1882 break; 1883 case HFP_CMD_TRANSMIT_DTMF_CODES: 1884 hfp_connection->command = HFP_CMD_NONE; 1885 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &hfp_connection->line_buffer[0]); 1886 break; 1887 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1888 hfp_connection->command = HFP_CMD_NONE; 1889 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1890 break; 1891 case HFP_CMD_TURN_OFF_EC_AND_NR: 1892 hfp_connection->command = HFP_CMD_NONE; 1893 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1894 hfp_connection->ok_pending = 1; 1895 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1896 printf("AG: EC/NR = %u\n", hfp_connection->ag_echo_and_noise_reduction); 1897 } else { 1898 hfp_connection->send_error = 1; 1899 } 1900 break; 1901 case HFP_CMD_CALL_ANSWERED: 1902 hfp_connection->command = HFP_CMD_NONE; 1903 printf("HFP: ATA\n"); 1904 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1905 break; 1906 case HFP_CMD_HANG_UP_CALL: 1907 hfp_connection->command = HFP_CMD_NONE; 1908 hfp_connection->ok_pending = 1; 1909 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1910 break; 1911 case HFP_CMD_CALL_HOLD: { 1912 // TODO: fully implement this 1913 log_error("HFP: unhandled call hold type %c", hfp_connection->line_buffer[0]); 1914 hfp_connection->command = HFP_CMD_NONE; 1915 hfp_connection->ok_pending = 1; 1916 hfp_connection->call_index = 0; 1917 1918 if (hfp_connection->line_buffer[1] != '\0'){ 1919 hfp_connection->call_index = atoi((char *)&hfp_connection->line_buffer[1]); 1920 } 1921 1922 switch (hfp_connection->line_buffer[0]){ 1923 case '0': 1924 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1925 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1926 break; 1927 case '1': 1928 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1929 // Where both a held and a waiting call exist, the above procedures shall apply to the 1930 // waiting call (i.e., not to the held call) in conflicting situation. 1931 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1932 break; 1933 case '2': 1934 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1935 // Where both a held and a waiting call exist, the above procedures shall apply to the 1936 // waiting call (i.e., not to the held call) in conflicting situation. 1937 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1938 break; 1939 case '3': 1940 // Adds a held call to the conversation. 1941 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1942 break; 1943 case '4': 1944 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1945 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1946 break; 1947 default: 1948 break; 1949 } 1950 break; 1951 } 1952 case HFP_CMD_CALL_PHONE_NUMBER: 1953 hfp_connection->command = HFP_CMD_NONE; 1954 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1955 break; 1956 case HFP_CMD_REDIAL_LAST_NUMBER: 1957 hfp_connection->command = HFP_CMD_NONE; 1958 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1959 break; 1960 case HFP_CMD_ENABLE_CLIP: 1961 hfp_connection->command = HFP_CMD_NONE; 1962 hfp_connection->clip_enabled = hfp_connection->line_buffer[8] != '0'; 1963 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1964 hfp_connection->ok_pending = 1; 1965 break; 1966 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1967 hfp_connection->command = HFP_CMD_NONE; 1968 hfp_connection->call_waiting_notification_enabled = hfp_connection->line_buffer[8] != '0'; 1969 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1970 hfp_connection->ok_pending = 1; 1971 break; 1972 case HFP_CMD_SET_SPEAKER_GAIN: 1973 hfp_connection->command = HFP_CMD_NONE; 1974 hfp_connection->ok_pending = 1; 1975 printf("HF speaker gain = %u\n", hfp_connection->speaker_gain); 1976 break; 1977 case HFP_CMD_SET_MICROPHONE_GAIN: 1978 hfp_connection->command = HFP_CMD_NONE; 1979 hfp_connection->ok_pending = 1; 1980 printf("HF microphone gain = %u\n", hfp_connection->microphone_gain); 1981 break; 1982 default: 1983 break; 1984 } 1985 } 1986 1987 static void hfp_run(void){ 1988 btstack_linked_list_iterator_t it; 1989 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1990 while (btstack_linked_list_iterator_has_next(&it)){ 1991 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1992 hfp_run_for_context(hfp_connection); 1993 } 1994 } 1995 1996 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1997 switch (packet_type){ 1998 case RFCOMM_DATA_PACKET: 1999 hfp_handle_rfcomm_data(packet_type, channel, packet, size); 2000 break; 2001 case HCI_EVENT_PACKET: 2002 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2003 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2004 hfp_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2005 return; 2006 } 2007 hfp_handle_hci_event(packet_type, channel, packet, size); 2008 break; 2009 default: 2010 break; 2011 } 2012 2013 hfp_run(); 2014 } 2015 2016 2017 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2018 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2019 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2020 return; 2021 } 2022 int i; 2023 hfp_codecs_nr = codecs_nr; 2024 for (i=0; i < codecs_nr; i++){ 2025 hfp_codecs[i] = codecs[i]; 2026 } 2027 } 2028 2029 void hfp_ag_init_supported_features(uint32_t supported_features){ 2030 hfp_supported_features = supported_features; 2031 } 2032 2033 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2034 hfp_ag_indicators_nr = ag_indicators_nr; 2035 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2036 } 2037 2038 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2039 if (hf_indicators_nr > HFP_MAX_NUM_HF_INDICATORS) return; 2040 hfp_generic_status_indicators_nr = hf_indicators_nr; 2041 memcpy(hfp_generic_status_indicators, hf_indicators, hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2042 } 2043 2044 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2045 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2046 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2047 } 2048 2049 2050 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2051 // register for HCI events 2052 hci_event_callback_registration.callback = &packet_handler; 2053 hci_add_event_handler(&hci_event_callback_registration); 2054 2055 rfcomm_register_service(&packet_handler, rfcomm_channel_nr, 0xffff); 2056 2057 hfp_ag_response_and_hold_active = 0; 2058 subscriber_numbers = NULL; 2059 subscriber_numbers_count = 0; 2060 2061 hfp_set_packet_handler_for_rfcomm_connections(&packet_handler); 2062 2063 hfp_gsm_init(); 2064 } 2065 2066 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2067 hfp_establish_service_level_connection(bd_addr, SDP_Handsfree); 2068 } 2069 2070 void hfp_ag_release_service_level_connection(bd_addr_t bd_addr){ 2071 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2072 hfp_release_service_level_connection(hfp_connection); 2073 hfp_run_for_context(hfp_connection); 2074 } 2075 2076 void hfp_ag_report_extended_audio_gateway_error_result_code(bd_addr_t bd_addr, hfp_cme_error_t error){ 2077 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2078 if (!hfp_connection){ 2079 log_error("HFP HF: hfp_connection doesn't exist."); 2080 return; 2081 } 2082 hfp_connection->extended_audio_gateway_error = 0; 2083 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2084 return; 2085 } 2086 hfp_connection->extended_audio_gateway_error = error; 2087 hfp_run_for_context(hfp_connection); 2088 } 2089 2090 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2091 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2092 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2093 2094 hfp_connection->establish_audio_connection = 1; 2095 2096 if (!has_codec_negotiation_feature(hfp_connection)){ 2097 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using defaults"); 2098 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2099 } 2100 2101 switch (hfp_connection->codecs_state){ 2102 case HFP_CODECS_IDLE: 2103 case HFP_CODECS_RECEIVED_LIST: 2104 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2105 case HFP_CODECS_ERROR: 2106 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2107 break; 2108 default: 2109 break; 2110 } 2111 } 2112 2113 void hfp_ag_establish_audio_connection(bd_addr_t bd_addr){ 2114 hfp_ag_establish_service_level_connection(bd_addr); 2115 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2116 2117 hfp_connection->establish_audio_connection = 0; 2118 hfp_ag_setup_audio_connection(hfp_connection); 2119 hfp_run_for_context(hfp_connection); 2120 } 2121 2122 void hfp_ag_release_audio_connection(bd_addr_t bd_addr){ 2123 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2124 hfp_release_audio_connection(hfp_connection); 2125 hfp_run_for_context(hfp_connection); 2126 } 2127 2128 /** 2129 * @brief Enable in-band ring tone 2130 */ 2131 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2132 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2133 return; 2134 } 2135 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2136 2137 btstack_linked_list_iterator_t it; 2138 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2139 while (btstack_linked_list_iterator_has_next(&it)){ 2140 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2141 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2142 hfp_run_for_context(hfp_connection); 2143 } 2144 } 2145 2146 /** 2147 * @brief Called from GSM 2148 */ 2149 void hfp_ag_incoming_call(void){ 2150 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2151 } 2152 2153 /** 2154 * @brief number is stored. 2155 */ 2156 void hfp_ag_set_clip(uint8_t type, const char * number){ 2157 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2158 } 2159 2160 void hfp_ag_call_dropped(void){ 2161 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2162 } 2163 2164 // call from AG UI 2165 void hfp_ag_answer_incoming_call(void){ 2166 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2167 } 2168 2169 void hfp_ag_join_held_call(void){ 2170 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2171 } 2172 2173 void hfp_ag_terminate_call(void){ 2174 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2175 } 2176 2177 void hfp_ag_outgoing_call_ringing(void){ 2178 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2179 } 2180 2181 void hfp_ag_outgoing_call_established(void){ 2182 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2183 } 2184 2185 void hfp_ag_outgoing_call_rejected(void){ 2186 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2187 } 2188 2189 void hfp_ag_outgoing_call_accepted(void){ 2190 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2191 } 2192 2193 void hfp_ag_hold_incoming_call(void){ 2194 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2195 } 2196 2197 void hfp_ag_accept_held_incoming_call(void) { 2198 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2199 } 2200 2201 void hfp_ag_reject_held_incoming_call(void){ 2202 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2203 } 2204 2205 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2206 int indicator_index = get_ag_indicator_index_for_name(name); 2207 if (indicator_index < 0) return; 2208 hfp_ag_indicators[indicator_index].status = value; 2209 2210 2211 btstack_linked_list_iterator_t it; 2212 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2213 while (btstack_linked_list_iterator_has_next(&it)){ 2214 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2215 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2216 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2217 continue; 2218 } 2219 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2220 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2221 hfp_run_for_context(hfp_connection); 2222 } 2223 } 2224 2225 void hfp_ag_set_registration_status(int status){ 2226 hfp_ag_set_ag_indicator("service", status); 2227 } 2228 2229 void hfp_ag_set_signal_strength(int strength){ 2230 hfp_ag_set_ag_indicator("signal", strength); 2231 } 2232 2233 void hfp_ag_set_roaming_status(int status){ 2234 hfp_ag_set_ag_indicator("roam", status); 2235 } 2236 2237 void hfp_ag_set_battery_level(int level){ 2238 hfp_ag_set_ag_indicator("battchg", level); 2239 } 2240 2241 void hfp_ag_activate_voice_recognition(bd_addr_t bd_addr, int activate){ 2242 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2243 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2244 2245 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2246 printf("AG cannot acivate voice recognition - not supported by HF\n"); 2247 return; 2248 } 2249 2250 if (activate){ 2251 hfp_ag_establish_audio_connection(bd_addr); 2252 } 2253 2254 hfp_connection->ag_activate_voice_recognition = activate; 2255 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2256 hfp_run_for_context(hfp_connection); 2257 } 2258 2259 void hfp_ag_set_microphone_gain(bd_addr_t bd_addr, int gain){ 2260 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2261 if (hfp_connection->microphone_gain != gain){ 2262 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2263 hfp_connection->microphone_gain = gain; 2264 hfp_connection->send_microphone_gain = 1; 2265 } 2266 hfp_run_for_context(hfp_connection); 2267 } 2268 2269 void hfp_ag_set_speaker_gain(bd_addr_t bd_addr, int gain){ 2270 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2271 if (hfp_connection->speaker_gain != gain){ 2272 hfp_connection->speaker_gain = gain; 2273 hfp_connection->send_speaker_gain = 1; 2274 } 2275 hfp_run_for_context(hfp_connection); 2276 } 2277 2278 void hfp_ag_send_phone_number_for_voice_tag(bd_addr_t bd_addr, const char * number){ 2279 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2280 hfp_ag_set_clip(0, number); 2281 hfp_connection->send_phone_number_for_voice_tag = 1; 2282 } 2283 2284 void hfp_ag_reject_phone_number_for_voice_tag(bd_addr_t bd_addr){ 2285 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2286 hfp_connection->send_error = 1; 2287 } 2288 2289 void hfp_ag_send_dtmf_code_done(bd_addr_t bd_addr){ 2290 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2291 hfp_connection->ok_pending = 1; 2292 } 2293 2294 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2295 subscriber_numbers = numbers; 2296 subscriber_numbers_count = numbers_count; 2297 } 2298 2299 void hfp_ag_clear_last_dialed_number(void){ 2300 hfp_gsm_clear_last_dialed_number(); 2301 } 2302 2303 void hfp_ag_notify_incoming_call_waiting(bd_addr_t bd_addr){ 2304 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2305 if (!hfp_connection->call_waiting_notification_enabled) return; 2306 2307 hfp_connection->ag_notify_incoming_call_waiting = 1; 2308 hfp_run_for_context(hfp_connection); 2309 } 2310 2311