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 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 522 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 523 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 524 return HFP_CODEC_MSBC; 525 } 526 } 527 return HFP_CODEC_CVSD; 528 } 529 530 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 531 /* events ( == commands): 532 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 533 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 534 hf_trigger_codec_connection_setup == received BCC 535 ag_trigger_codec_connection_setup == received from AG to send BCS 536 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 537 */ 538 539 switch (hfp_connection->codecs_state){ 540 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 541 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 542 break; 543 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 544 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 545 break; 546 default: 547 break; 548 } 549 550 // printf(" -> State machine: CC\n"); 551 552 switch (hfp_connection->command){ 553 case HFP_CMD_AVAILABLE_CODECS: 554 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 555 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 556 hfp_ag_ok(hfp_connection->rfcomm_cid); 557 return 1; 558 } 559 560 switch (hfp_connection->codecs_state){ 561 case HFP_CODECS_AG_SENT_COMMON_CODEC: 562 case HFP_CODECS_EXCHANGED: 563 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 564 break; 565 default: 566 break; 567 } 568 hfp_ag_ok(hfp_connection->rfcomm_cid); 569 return 1; 570 571 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 572 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 573 hfp_ag_ok(hfp_connection->rfcomm_cid); 574 return 1; 575 576 case HFP_CMD_AG_SEND_COMMON_CODEC: 577 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 578 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 579 hfp_ag_cmd_suggest_codec(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 580 return 1; 581 582 case HFP_CMD_HF_CONFIRMED_CODEC: 583 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 584 hfp_connection->codecs_state = HFP_CODECS_ERROR; 585 hfp_ag_error(hfp_connection->rfcomm_cid); 586 return 1; 587 } 588 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 589 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 590 hfp_emit_codec_event(hfp_callback, 0, hfp_connection->negotiated_codec); 591 hfp_ag_ok(hfp_connection->rfcomm_cid); 592 return 1; 593 default: 594 break; 595 } 596 return 0; 597 } 598 599 static void hfp_init_link_settings(hfp_connection_t * hfp_connection){ 600 // determine highest possible link setting 601 hfp_connection->link_setting = HFP_LINK_SETTINGS_D1; 602 if (hci_remote_esco_supported(hfp_connection->acl_handle)){ 603 hfp_connection->link_setting = HFP_LINK_SETTINGS_S3; 604 if ((hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) 605 && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4))){ 606 hfp_connection->link_setting = HFP_LINK_SETTINGS_S4; 607 } 608 } 609 } 610 611 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 612 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 613 hfp_emit_connection_event(hfp_callback, HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED, 0, hfp_connection->acl_handle, hfp_connection->remote_addr, hfp_connection->negotiated_codec); 614 615 hfp_init_link_settings(hfp_connection); 616 617 // if active call exist, set per-hfp_connection state active, too (when audio is on) 618 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 619 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 620 } 621 // if AG is ringing, also start ringing on the HF 622 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS && 623 hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 624 hfp_ag_hf_start_ringing(hfp_connection); 625 } 626 } 627 628 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 629 log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 630 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 631 int done = 0; 632 switch(hfp_connection->command){ 633 case HFP_CMD_SUPPORTED_FEATURES: 634 switch(hfp_connection->state){ 635 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 636 case HFP_EXCHANGE_SUPPORTED_FEATURES: 637 if (has_codec_negotiation_feature(hfp_connection)){ 638 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 639 } else { 640 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 641 } 642 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 643 return 1; 644 default: 645 break; 646 } 647 break; 648 case HFP_CMD_AVAILABLE_CODECS: 649 done = codecs_exchange_state_machine(hfp_connection); 650 651 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 652 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 653 } 654 return done; 655 656 case HFP_CMD_RETRIEVE_AG_INDICATORS: 657 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 658 // HF requested AG Indicators and we did expect it 659 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 660 // continue below in state switch 661 } 662 break; 663 664 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 665 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 666 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 667 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 668 return 1; 669 670 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 671 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 672 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 673 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 674 } else if (has_hf_indicators_feature(hfp_connection)){ 675 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 676 } else { 677 hfp_ag_slc_established(hfp_connection); 678 } 679 hfp_ag_set_indicator_status_update_cmd(hfp_connection->rfcomm_cid, 1); 680 return 1; 681 682 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 683 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 684 if (has_hf_indicators_feature(hfp_connection)){ 685 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 686 } 687 hfp_ag_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 688 if (!has_hf_indicators_feature(hfp_connection)){ 689 hfp_ag_slc_established(hfp_connection); 690 } 691 return 1; 692 693 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 694 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 695 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 696 hfp_ag_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 697 return 1; 698 699 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 700 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 701 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 702 hfp_ag_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 703 return 1; 704 705 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 706 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 707 hfp_ag_slc_established(hfp_connection); 708 hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 709 return 1; 710 default: 711 break; 712 } 713 714 switch (hfp_connection->state){ 715 case HFP_RETRIEVE_INDICATORS: { 716 int next_segment = hfp_ag_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 717 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 718 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 719 if (next_segment < num_segments){ 720 // prepare sending of next segment 721 hfp_connection->send_ag_indicators_segment = next_segment; 722 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 723 } else { 724 // done, go to next state 725 hfp_connection->send_ag_indicators_segment = 0; 726 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 727 } 728 return 1; 729 } 730 default: 731 break; 732 } 733 734 return done; 735 } 736 737 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 738 739 int done = codecs_exchange_state_machine(hfp_connection); 740 if (done) return done; 741 742 switch(hfp_connection->command){ 743 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 744 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 745 hfp_ag_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 746 return 1; 747 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 748 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 749 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 750 hfp_ag_ok(hfp_connection->rfcomm_cid); 751 hfp_ag_setup_audio_connection(hfp_connection); 752 } else { 753 hfp_ag_error(hfp_connection->rfcomm_cid); 754 } 755 return 1; 756 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 757 hfp_ag_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 758 return 1; 759 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 760 hfp_ag_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 761 return 1; 762 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 763 if (hfp_connection->network_operator.format != 0){ 764 hfp_ag_error(hfp_connection->rfcomm_cid); 765 } else { 766 hfp_ag_ok(hfp_connection->rfcomm_cid); 767 } 768 return 1; 769 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 770 hfp_ag_ok(hfp_connection->rfcomm_cid); 771 return 1; 772 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 773 if (hfp_connection->extended_audio_gateway_error){ 774 hfp_connection->extended_audio_gateway_error = 0; 775 hfp_ag_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 776 return 1; 777 } 778 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 779 hfp_ag_ok(hfp_connection->rfcomm_cid); 780 return 1; 781 default: 782 break; 783 } 784 return 0; 785 } 786 787 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 788 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 789 hfp_connection->state > HFP_W2_DISCONNECT_SCO) return 0; 790 791 792 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->release_audio_connection){ 793 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 794 hfp_connection->release_audio_connection = 0; 795 gap_disconnect(hfp_connection->sco_handle); 796 return 1; 797 } 798 799 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 800 801 // run codecs exchange 802 int done = codecs_exchange_state_machine(hfp_connection); 803 if (done) return done; 804 805 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return done; 806 if (hfp_connection->establish_audio_connection){ 807 hfp_connection->state = HFP_W4_SCO_CONNECTED; 808 hfp_connection->establish_audio_connection = 0; 809 hfp_setup_synchronous_connection(hfp_connection); 810 return 1; 811 } 812 return 0; 813 } 814 815 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 816 btstack_linked_list_iterator_t it; 817 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 818 819 while (btstack_linked_list_iterator_has_next(&it)){ 820 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 821 if ( & hfp_connection->hfp_timeout == ts) { 822 return hfp_connection; 823 } 824 } 825 return NULL; 826 } 827 828 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 829 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 830 if (!hfp_connection) return; 831 832 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 833 hfp_connection->ag_ring = 1; 834 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 835 836 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 837 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 838 839 hfp_run_for_context(hfp_connection); 840 } 841 842 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 843 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 844 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 845 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 846 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 847 } 848 849 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 850 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 851 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 852 } 853 854 // 855 // transitition implementations for hfp_ag_call_state_machine 856 // 857 858 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 859 if (use_in_band_tone()){ 860 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 861 hfp_ag_establish_audio_connection(hfp_connection->remote_addr); 862 } else { 863 hfp_timeout_start(hfp_connection); 864 hfp_connection->ag_ring = 1; 865 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 866 hfp_connection->call_state = HFP_CALL_RINGING; 867 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 868 } 869 } 870 871 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 872 hfp_connection->ag_ring = 0; 873 hfp_connection->ag_send_clip = 0; 874 hfp_timeout_stop(hfp_connection); 875 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_STOP_RINGINIG); 876 } 877 878 static void hfp_ag_trigger_incoming_call(void){ 879 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 880 if (indicator_index < 0) return; 881 882 btstack_linked_list_iterator_t it; 883 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 884 while (btstack_linked_list_iterator_has_next(&it)){ 885 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 886 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 887 if (hfp_connection->call_state == HFP_CALL_IDLE){ 888 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 889 hfp_ag_hf_start_ringing(hfp_connection); 890 } 891 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 892 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 893 } 894 hfp_run_for_context(hfp_connection); 895 } 896 } 897 898 static void hfp_ag_transfer_callsetup_state(void){ 899 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 900 if (indicator_index < 0) return; 901 902 btstack_linked_list_iterator_t it; 903 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 904 while (btstack_linked_list_iterator_has_next(&it)){ 905 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 906 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 907 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 908 hfp_run_for_context(hfp_connection); 909 } 910 } 911 912 static void hfp_ag_transfer_call_state(void){ 913 int indicator_index = get_ag_indicator_index_for_name("call"); 914 if (indicator_index < 0) return; 915 916 btstack_linked_list_iterator_t it; 917 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 918 while (btstack_linked_list_iterator_has_next(&it)){ 919 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 920 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 921 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 922 hfp_run_for_context(hfp_connection); 923 } 924 } 925 926 static void hfp_ag_transfer_callheld_state(void){ 927 int indicator_index = get_ag_indicator_index_for_name("callheld"); 928 if (indicator_index < 0) return; 929 930 btstack_linked_list_iterator_t it; 931 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 932 while (btstack_linked_list_iterator_has_next(&it)){ 933 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 934 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 935 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 936 hfp_run_for_context(hfp_connection); 937 } 938 } 939 940 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 941 942 int call_indicator_index = get_ag_indicator_index_for_name("call"); 943 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 944 945 btstack_linked_list_iterator_t it; 946 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 947 while (btstack_linked_list_iterator_has_next(&it)){ 948 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 949 if (hfp_connection->call_state != HFP_CALL_RINGING && 950 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 951 952 hfp_ag_hf_stop_ringing(hfp_connection); 953 if (hfp_connection == source){ 954 hfp_connection->ok_pending = 1; 955 956 if (use_in_band_tone()){ 957 hfp_connection->call_state = HFP_CALL_ACTIVE; 958 } else { 959 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 960 hfp_ag_establish_audio_connection(hfp_connection->remote_addr); 961 } 962 963 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 964 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 965 966 } else { 967 hfp_connection->call_state = HFP_CALL_IDLE; 968 } 969 hfp_run_for_context(hfp_connection); 970 } 971 } 972 973 static void hfp_ag_ag_accept_call(void){ 974 975 int call_indicator_index = get_ag_indicator_index_for_name("call"); 976 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 977 978 btstack_linked_list_iterator_t it; 979 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 980 while (btstack_linked_list_iterator_has_next(&it)){ 981 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 982 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 983 984 hfp_ag_hf_stop_ringing(hfp_connection); 985 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 986 987 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 988 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 989 990 hfp_run_for_context(hfp_connection); 991 break; // only single 992 } 993 } 994 995 static void hfp_ag_trigger_reject_call(void){ 996 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 997 btstack_linked_list_iterator_t it; 998 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 999 while (btstack_linked_list_iterator_has_next(&it)){ 1000 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1001 if (connection->call_state != HFP_CALL_RINGING && 1002 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1003 hfp_ag_hf_stop_ringing(connection); 1004 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1005 connection->call_state = HFP_CALL_IDLE; 1006 hfp_run_for_context(connection); 1007 } 1008 } 1009 1010 static void hfp_ag_trigger_terminate_call(void){ 1011 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1012 1013 btstack_linked_list_iterator_t it; 1014 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1015 while (btstack_linked_list_iterator_has_next(&it)){ 1016 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1017 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1018 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1019 hfp_connection->call_state = HFP_CALL_IDLE; 1020 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1021 hfp_connection->release_audio_connection = 1; 1022 hfp_run_for_context(hfp_connection); 1023 } 1024 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_TERMINATED); 1025 } 1026 1027 static void hfp_ag_set_callsetup_indicator(void){ 1028 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1029 if (!indicator){ 1030 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1031 }; 1032 indicator->status = hfp_gsm_callsetup_status(); 1033 } 1034 1035 static void hfp_ag_set_callheld_indicator(void){ 1036 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1037 if (!indicator){ 1038 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1039 }; 1040 indicator->status = hfp_gsm_callheld_status(); 1041 } 1042 1043 static void hfp_ag_set_call_indicator(void){ 1044 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1045 if (!indicator){ 1046 log_error("hfp_ag_set_call_state: call indicator is missing"); 1047 }; 1048 indicator->status = hfp_gsm_call_status(); 1049 } 1050 1051 static void hfp_ag_stop_ringing(void){ 1052 btstack_linked_list_iterator_t it; 1053 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1054 while (btstack_linked_list_iterator_has_next(&it)){ 1055 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1056 if (hfp_connection->call_state != HFP_CALL_RINGING && 1057 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1058 hfp_ag_hf_stop_ringing(hfp_connection); 1059 } 1060 } 1061 1062 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1063 btstack_linked_list_iterator_t it; 1064 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1065 while (btstack_linked_list_iterator_has_next(&it)){ 1066 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1067 if (hfp_connection->call_state == call_state) return hfp_connection; 1068 } 1069 return NULL; 1070 } 1071 1072 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1073 btstack_linked_list_iterator_t it; 1074 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1075 while (btstack_linked_list_iterator_has_next(&it)){ 1076 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1077 hfp_connection->send_response_and_hold_status = state + 1; 1078 } 1079 } 1080 1081 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1082 int indicator_index; 1083 switch (hfp_connection->call_state){ 1084 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1085 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1086 // we got event: audio hfp_connection established 1087 hfp_timeout_start(hfp_connection); 1088 hfp_connection->ag_ring = 1; 1089 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1090 hfp_connection->call_state = HFP_CALL_RINGING; 1091 hfp_connection->call_state = HFP_CALL_RINGING; 1092 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 1093 break; 1094 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1095 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1096 // we got event: audio hfp_connection established 1097 hfp_connection->call_state = HFP_CALL_ACTIVE; 1098 break; 1099 case HFP_CALL_W2_SEND_CALL_WAITING: 1100 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1101 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1102 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1103 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1104 break; 1105 default: 1106 break; 1107 } 1108 return 0; 1109 } 1110 // hfp_connection is used to identify originating HF 1111 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1112 int indicator_index; 1113 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1114 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1115 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1116 1117 //printf("hfp_ag_call_sm event %d \n", event); 1118 switch (event){ 1119 case HFP_AG_INCOMING_CALL: 1120 switch (hfp_gsm_call_status()){ 1121 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1122 switch (hfp_gsm_callsetup_status()){ 1123 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1124 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1125 hfp_ag_set_callsetup_indicator(); 1126 hfp_ag_trigger_incoming_call(); 1127 printf("AG rings\n"); 1128 break; 1129 default: 1130 break; 1131 } 1132 break; 1133 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1134 switch (hfp_gsm_callsetup_status()){ 1135 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1136 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1137 hfp_ag_set_callsetup_indicator(); 1138 hfp_ag_trigger_incoming_call(); 1139 printf("AG call waiting\n"); 1140 break; 1141 default: 1142 break; 1143 } 1144 break; 1145 } 1146 break; 1147 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1148 switch (hfp_gsm_call_status()){ 1149 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1150 switch (hfp_gsm_callsetup_status()){ 1151 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1152 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1153 hfp_ag_set_call_indicator(); 1154 hfp_ag_set_callsetup_indicator(); 1155 hfp_ag_ag_accept_call(); 1156 printf("AG answers call, accept call by GSM\n"); 1157 break; 1158 default: 1159 break; 1160 } 1161 break; 1162 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1163 switch (hfp_gsm_callsetup_status()){ 1164 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1165 printf("AG: current call is placed on hold, incoming call gets active\n"); 1166 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1167 hfp_ag_set_callsetup_indicator(); 1168 hfp_ag_set_callheld_indicator(); 1169 hfp_ag_transfer_callsetup_state(); 1170 hfp_ag_transfer_callheld_state(); 1171 break; 1172 default: 1173 break; 1174 } 1175 break; 1176 } 1177 break; 1178 1179 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1180 switch (hfp_gsm_call_status()){ 1181 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1182 switch (hfp_gsm_callheld_status()){ 1183 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1184 printf("AG: joining held call with active call\n"); 1185 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1186 hfp_ag_set_callheld_indicator(); 1187 hfp_ag_transfer_callheld_state(); 1188 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1189 break; 1190 default: 1191 break; 1192 } 1193 break; 1194 default: 1195 break; 1196 } 1197 break; 1198 1199 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1200 switch (hfp_gsm_call_status()){ 1201 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1202 switch (hfp_gsm_callsetup_status()){ 1203 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1204 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1205 hfp_ag_set_callsetup_indicator(); 1206 hfp_ag_set_call_indicator(); 1207 hfp_ag_hf_accept_call(hfp_connection); 1208 printf("HF answers call, accept call by GSM\n"); 1209 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_ANSWERED); 1210 break; 1211 default: 1212 break; 1213 } 1214 break; 1215 default: 1216 break; 1217 } 1218 break; 1219 1220 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1221 switch (hfp_gsm_call_status()){ 1222 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1223 switch (hfp_gsm_callsetup_status()){ 1224 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1225 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1226 hfp_ag_response_and_hold_active = 1; 1227 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1228 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1229 // as with regualr call 1230 hfp_ag_set_call_indicator(); 1231 hfp_ag_set_callsetup_indicator(); 1232 hfp_ag_ag_accept_call(); 1233 printf("AG response and hold - hold by AG\n"); 1234 break; 1235 default: 1236 break; 1237 } 1238 break; 1239 default: 1240 break; 1241 } 1242 break; 1243 1244 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1245 switch (hfp_gsm_call_status()){ 1246 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1247 switch (hfp_gsm_callsetup_status()){ 1248 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1249 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1250 hfp_ag_response_and_hold_active = 1; 1251 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1252 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1253 // as with regualr call 1254 hfp_ag_set_call_indicator(); 1255 hfp_ag_set_callsetup_indicator(); 1256 hfp_ag_hf_accept_call(hfp_connection); 1257 printf("AG response and hold - hold by HF\n"); 1258 break; 1259 default: 1260 break; 1261 } 1262 break; 1263 default: 1264 break; 1265 } 1266 break; 1267 1268 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1269 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1270 if (!hfp_ag_response_and_hold_active) break; 1271 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1272 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1273 hfp_ag_response_and_hold_active = 0; 1274 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1275 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1276 printf("Held Call accepted and active\n"); 1277 break; 1278 1279 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1280 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1281 if (!hfp_ag_response_and_hold_active) break; 1282 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1283 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1284 hfp_ag_response_and_hold_active = 0; 1285 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1286 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1287 // from terminate by ag 1288 hfp_ag_set_call_indicator(); 1289 hfp_ag_trigger_terminate_call(); 1290 break; 1291 1292 case HFP_AG_TERMINATE_CALL_BY_HF: 1293 switch (hfp_gsm_call_status()){ 1294 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1295 switch (hfp_gsm_callsetup_status()){ 1296 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1297 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1298 hfp_ag_set_callsetup_indicator(); 1299 hfp_ag_transfer_callsetup_state(); 1300 hfp_ag_trigger_reject_call(); 1301 printf("HF Rejected Incoming call, AG terminate call\n"); 1302 break; 1303 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1304 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1305 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1306 hfp_ag_set_callsetup_indicator(); 1307 hfp_ag_transfer_callsetup_state(); 1308 printf("AG terminate outgoing call process\n"); 1309 default: 1310 break; 1311 } 1312 break; 1313 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1314 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1315 hfp_ag_set_call_indicator(); 1316 hfp_ag_transfer_call_state(); 1317 hfp_connection->call_state = HFP_CALL_IDLE; 1318 printf("AG terminate call\n"); 1319 break; 1320 } 1321 break; 1322 1323 case HFP_AG_TERMINATE_CALL_BY_AG: 1324 switch (hfp_gsm_call_status()){ 1325 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1326 switch (hfp_gsm_callsetup_status()){ 1327 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1328 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1329 hfp_ag_set_callsetup_indicator(); 1330 hfp_ag_trigger_reject_call(); 1331 printf("AG Rejected Incoming call, AG terminate call\n"); 1332 break; 1333 default: 1334 break; 1335 } 1336 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1337 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1338 hfp_ag_set_callsetup_indicator(); 1339 hfp_ag_set_call_indicator(); 1340 hfp_ag_trigger_terminate_call(); 1341 printf("AG terminate call\n"); 1342 break; 1343 default: 1344 break; 1345 } 1346 break; 1347 case HFP_AG_CALL_DROPPED: 1348 switch (hfp_gsm_call_status()){ 1349 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1350 switch (hfp_gsm_callsetup_status()){ 1351 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1352 hfp_ag_stop_ringing(); 1353 printf("Incoming call interrupted\n"); 1354 break; 1355 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1356 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1357 printf("Outgoing call interrupted\n"); 1358 printf("AG notify call dropped\n"); 1359 break; 1360 default: 1361 break; 1362 } 1363 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1364 hfp_ag_set_callsetup_indicator(); 1365 hfp_ag_transfer_callsetup_state(); 1366 break; 1367 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1368 if (hfp_ag_response_and_hold_active) { 1369 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1370 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1371 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1372 } 1373 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1374 hfp_ag_set_callsetup_indicator(); 1375 hfp_ag_set_call_indicator(); 1376 hfp_ag_trigger_terminate_call(); 1377 printf("AG notify call dropped\n"); 1378 break; 1379 default: 1380 break; 1381 } 1382 break; 1383 1384 case HFP_AG_OUTGOING_CALL_INITIATED: 1385 // directly reject call if number of free slots is exceeded 1386 if (!hfp_gsm_call_possible()){ 1387 hfp_connection->send_error = 1; 1388 hfp_run_for_context(hfp_connection); 1389 break; 1390 } 1391 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1392 1393 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1394 1395 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1396 break; 1397 1398 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1399 // directly reject call if number of free slots is exceeded 1400 if (!hfp_gsm_call_possible()){ 1401 hfp_connection->send_error = 1; 1402 hfp_run_for_context(hfp_connection); 1403 break; 1404 } 1405 1406 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1407 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1408 1409 printf("\nRedial last number"); 1410 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1411 1412 if (strlen(last_dialed_number) > 0){ 1413 printf("\nLast number exists: accept call"); 1414 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1415 } else { 1416 printf("\nLast number missing: reject call"); 1417 hfp_ag_outgoing_call_rejected(); 1418 } 1419 break; 1420 } 1421 case HFP_AG_OUTGOING_CALL_REJECTED: 1422 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1423 if (!hfp_connection){ 1424 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1425 break; 1426 } 1427 1428 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1429 hfp_connection->call_state = HFP_CALL_IDLE; 1430 hfp_connection->send_error = 1; 1431 hfp_run_for_context(hfp_connection); 1432 break; 1433 1434 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1435 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1436 if (!hfp_connection){ 1437 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1438 break; 1439 } 1440 1441 hfp_connection->ok_pending = 1; 1442 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1443 1444 // trigger callsetup to be 1445 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1446 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1447 1448 hfp_ag_set_callsetup_indicator(); 1449 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1450 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1451 1452 // put current call on hold if active 1453 if (put_call_on_hold){ 1454 printf("AG putting current call on hold for new outgoing call\n"); 1455 hfp_ag_set_callheld_indicator(); 1456 indicator_index = get_ag_indicator_index_for_name("callheld"); 1457 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1458 } 1459 1460 // start audio if needed 1461 hfp_ag_establish_audio_connection(hfp_connection->remote_addr); 1462 break; 1463 } 1464 case HFP_AG_OUTGOING_CALL_RINGING: 1465 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1466 if (!hfp_connection){ 1467 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1468 break; 1469 } 1470 1471 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1472 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1473 hfp_ag_set_callsetup_indicator(); 1474 hfp_ag_transfer_callsetup_state(); 1475 break; 1476 1477 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1478 // get outgoing call 1479 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1480 if (!hfp_connection){ 1481 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1482 } 1483 if (!hfp_connection){ 1484 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1485 break; 1486 } 1487 1488 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1489 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1490 hfp_connection->call_state = HFP_CALL_ACTIVE; 1491 hfp_ag_set_callsetup_indicator(); 1492 hfp_ag_set_call_indicator(); 1493 hfp_ag_transfer_call_state(); 1494 hfp_ag_transfer_callsetup_state(); 1495 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1496 hfp_ag_set_callheld_indicator(); 1497 hfp_ag_transfer_callheld_state(); 1498 } 1499 break; 1500 } 1501 1502 case HFP_AG_CALL_HOLD_USER_BUSY: 1503 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1504 hfp_ag_set_callsetup_indicator(); 1505 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1506 hfp_connection->call_state = HFP_CALL_ACTIVE; 1507 printf("AG: Call Waiting, User Busy\n"); 1508 break; 1509 1510 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1511 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1512 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1513 1514 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1515 if (call_held || call_setup_in_progress){ 1516 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1517 1518 } 1519 1520 if (call_setup_in_progress){ 1521 printf("AG: Call Dropped, Accept new call\n"); 1522 hfp_ag_set_callsetup_indicator(); 1523 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1524 } else { 1525 printf("AG: Call Dropped, Resume held call\n"); 1526 } 1527 if (call_held){ 1528 hfp_ag_set_callheld_indicator(); 1529 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1530 } 1531 1532 hfp_connection->call_state = HFP_CALL_ACTIVE; 1533 break; 1534 } 1535 1536 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1537 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1538 // only update if callsetup changed 1539 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1540 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1541 1542 if (call_setup_in_progress){ 1543 printf("AG: Call on Hold, Accept new call\n"); 1544 hfp_ag_set_callsetup_indicator(); 1545 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1546 } else { 1547 printf("AG: Swap calls\n"); 1548 } 1549 1550 hfp_ag_set_callheld_indicator(); 1551 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1552 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1553 hfp_connection->call_state = HFP_CALL_ACTIVE; 1554 break; 1555 } 1556 1557 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1558 // Adds a held call to the conversation. 1559 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1560 printf("AG: Join 3-way-call\n"); 1561 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1562 hfp_ag_set_callheld_indicator(); 1563 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1564 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1565 } 1566 hfp_connection->call_state = HFP_CALL_ACTIVE; 1567 break; 1568 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1569 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1570 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1571 printf("AG: Transfer call -> Connect two calls and disconnect\n"); 1572 hfp_ag_set_call_indicator(); 1573 hfp_ag_set_callheld_indicator(); 1574 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1575 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1576 hfp_connection->call_state = HFP_CALL_IDLE; 1577 break; 1578 1579 default: 1580 break; 1581 } 1582 1583 1584 } 1585 1586 1587 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1588 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1589 if (!active_call) return; 1590 1591 int idx = active_call->index; 1592 hfp_enhanced_call_dir_t dir = active_call->direction; 1593 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1594 hfp_enhanced_call_mode_t mode = active_call->mode; 1595 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1596 uint8_t type = active_call->clip_type; 1597 char * number = active_call->clip_number; 1598 1599 char buffer[100]; 1600 // TODO: check length of a buffer, to fit the MTU 1601 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1602 if (number){ 1603 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ", \"%s\",%u", number, type); 1604 } 1605 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1606 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, 1607 mode, mpty, type, number); 1608 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1609 } 1610 1611 static void hfp_run_for_context(hfp_connection_t *hfp_connection){ 1612 1613 log_info("hfp_run_for_context %p", hfp_connection); 1614 1615 if (!hfp_connection) return; 1616 1617 if (!hfp_connection->rfcomm_cid) return; 1618 1619 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1620 log_info("hfp_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1621 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1622 return; 1623 } 1624 1625 if (hfp_connection->send_status_of_current_calls){ 1626 hfp_connection->ok_pending = 0; 1627 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1628 hfp_connection->next_call_index++; 1629 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1630 } else { 1631 hfp_connection->next_call_index = 0; 1632 hfp_connection->ok_pending = 1; 1633 hfp_connection->send_status_of_current_calls = 0; 1634 } 1635 return; 1636 } 1637 1638 if (hfp_connection->ag_notify_incoming_call_waiting){ 1639 hfp_connection->ag_notify_incoming_call_waiting = 0; 1640 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1641 return; 1642 } 1643 1644 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1645 hfp_connection->ok_pending = 0; 1646 hfp_connection->send_error = 0; 1647 hfp_connection->command = HFP_CMD_NONE; 1648 hfp_ag_error(hfp_connection->rfcomm_cid); 1649 return; 1650 } 1651 1652 if (hfp_connection->send_error){ 1653 hfp_connection->send_error = 0; 1654 hfp_connection->command = HFP_CMD_NONE; 1655 hfp_ag_error(hfp_connection->rfcomm_cid); 1656 return; 1657 } 1658 1659 // note: before update AG indicators and ok_pending 1660 if (hfp_connection->send_response_and_hold_status){ 1661 int status = hfp_connection->send_response_and_hold_status - 1; 1662 hfp_connection->send_response_and_hold_status = 0; 1663 hfp_ag_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1664 return; 1665 } 1666 1667 if (hfp_connection->ok_pending){ 1668 hfp_connection->ok_pending = 0; 1669 hfp_connection->command = HFP_CMD_NONE; 1670 hfp_ag_ok(hfp_connection->rfcomm_cid); 1671 return; 1672 } 1673 1674 // update AG indicators 1675 if (hfp_connection->ag_indicators_status_update_bitmap){ 1676 int i; 1677 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1678 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1679 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1680 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1681 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1682 break; 1683 } 1684 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1685 return; 1686 } 1687 } 1688 } 1689 1690 if (hfp_connection->ag_ring){ 1691 hfp_connection->ag_ring = 0; 1692 hfp_connection->command = HFP_CMD_NONE; 1693 hfp_ag_ring(hfp_connection->rfcomm_cid); 1694 return; 1695 } 1696 1697 if (hfp_connection->ag_send_clip){ 1698 hfp_connection->ag_send_clip = 0; 1699 hfp_connection->command = HFP_CMD_NONE; 1700 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1701 return; 1702 } 1703 1704 if (hfp_connection->send_phone_number_for_voice_tag){ 1705 hfp_connection->send_phone_number_for_voice_tag = 0; 1706 hfp_connection->command = HFP_CMD_NONE; 1707 hfp_connection->ok_pending = 1; 1708 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1709 return; 1710 } 1711 1712 if (hfp_connection->send_subscriber_number){ 1713 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1714 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1715 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1716 } else { 1717 hfp_connection->send_subscriber_number = 0; 1718 hfp_connection->next_subscriber_number_to_send = 0; 1719 hfp_ag_ok(hfp_connection->rfcomm_cid); 1720 } 1721 hfp_connection->command = HFP_CMD_NONE; 1722 } 1723 1724 if (hfp_connection->send_microphone_gain){ 1725 hfp_connection->send_microphone_gain = 0; 1726 hfp_connection->command = HFP_CMD_NONE; 1727 hfp_ag_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1728 return; 1729 } 1730 1731 if (hfp_connection->send_speaker_gain){ 1732 hfp_connection->send_speaker_gain = 0; 1733 hfp_connection->command = HFP_CMD_NONE; 1734 hfp_ag_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1735 return; 1736 } 1737 1738 if (hfp_connection->send_ag_status_indicators){ 1739 hfp_connection->send_ag_status_indicators = 0; 1740 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1741 return; 1742 } 1743 1744 int done = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1745 if (!done){ 1746 done = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1747 } 1748 1749 if (!done){ 1750 done = call_setup_state_machine(hfp_connection); 1751 } 1752 1753 if (!done){ 1754 done = hfp_ag_run_for_audio_connection(hfp_connection); 1755 } 1756 1757 if (hfp_connection->command == HFP_CMD_NONE && !done){ 1758 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1759 switch(hfp_connection->state){ 1760 case HFP_W2_DISCONNECT_RFCOMM: 1761 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1762 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1763 break; 1764 default: 1765 break; 1766 } 1767 } 1768 if (done){ 1769 hfp_connection->command = HFP_CMD_NONE; 1770 } 1771 // 1772 if (done) { 1773 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1774 } 1775 } 1776 1777 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1778 int i; 1779 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1780 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1781 if (indicator->uuid == number){ 1782 return indicator; 1783 } 1784 } 1785 return NULL; 1786 } 1787 1788 static void hfp_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1789 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1790 if (!hfp_connection) return; 1791 1792 char last_char = packet[size-1]; 1793 packet[size-1] = 0; 1794 log_info("HFP_RX %s", packet); 1795 packet[size-1] = last_char; 1796 1797 int pos; 1798 for (pos = 0; pos < size ; pos++){ 1799 hfp_parse(hfp_connection, packet[pos], 0); 1800 } 1801 hfp_generic_status_indicator_t * indicator; 1802 int value; 1803 switch(hfp_connection->command){ 1804 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1805 if (hfp_ag_response_and_hold_active){ 1806 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1807 } 1808 hfp_connection->ok_pending = 1; 1809 break; 1810 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1811 value = atoi((char *)&hfp_connection->line_buffer[0]); 1812 printf("HF Response and Hold: %u\n", value); 1813 switch(value){ 1814 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1815 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1816 break; 1817 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1818 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1819 break; 1820 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1821 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1822 break; 1823 default: 1824 break; 1825 } 1826 hfp_connection->ok_pending = 1; 1827 break; 1828 case HFP_CMD_HF_INDICATOR_STATUS: 1829 hfp_connection->command = HFP_CMD_NONE; 1830 // find indicator by assigned number 1831 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1832 if (!indicator){ 1833 hfp_connection->send_error = 1; 1834 break; 1835 } 1836 value = atoi((char *)&hfp_connection->line_buffer[0]); 1837 switch (indicator->uuid){ 1838 case 1: // enhanced security 1839 if (value > 1) { 1840 hfp_connection->send_error = 1; 1841 return; 1842 } 1843 printf("HF Indicator 'enhanced security' set to %u\n", value); 1844 break; 1845 case 2: // battery level 1846 if (value > 100){ 1847 hfp_connection->send_error = 1; 1848 return; 1849 } 1850 printf("HF Indicator 'battery' set to %u\n", value); 1851 break; 1852 default: 1853 printf("HF Indicator unknown set to %u\n", value); 1854 break; 1855 } 1856 hfp_connection->ok_pending = 1; 1857 break; 1858 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1859 // expected by SLC state machine 1860 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1861 hfp_connection->send_ag_indicators_segment = 0; 1862 hfp_connection->send_ag_status_indicators = 1; 1863 break; 1864 case HFP_CMD_LIST_CURRENT_CALLS: 1865 hfp_connection->command = HFP_CMD_NONE; 1866 hfp_connection->next_call_index = 0; 1867 hfp_connection->send_status_of_current_calls = 1; 1868 break; 1869 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1870 if (subscriber_numbers_count == 0){ 1871 hfp_ag_ok(hfp_connection->rfcomm_cid); 1872 break; 1873 } 1874 hfp_connection->next_subscriber_number_to_send = 0; 1875 hfp_connection->send_subscriber_number = 1; 1876 break; 1877 case HFP_CMD_TRANSMIT_DTMF_CODES: 1878 hfp_connection->command = HFP_CMD_NONE; 1879 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &hfp_connection->line_buffer[0]); 1880 break; 1881 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1882 hfp_connection->command = HFP_CMD_NONE; 1883 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1884 break; 1885 case HFP_CMD_TURN_OFF_EC_AND_NR: 1886 hfp_connection->command = HFP_CMD_NONE; 1887 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1888 hfp_connection->ok_pending = 1; 1889 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1890 printf("AG: EC/NR = %u\n", hfp_connection->ag_echo_and_noise_reduction); 1891 } else { 1892 hfp_connection->send_error = 1; 1893 } 1894 break; 1895 case HFP_CMD_CALL_ANSWERED: 1896 hfp_connection->command = HFP_CMD_NONE; 1897 printf("HFP: ATA\n"); 1898 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1899 break; 1900 case HFP_CMD_HANG_UP_CALL: 1901 hfp_connection->command = HFP_CMD_NONE; 1902 hfp_connection->ok_pending = 1; 1903 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1904 break; 1905 case HFP_CMD_CALL_HOLD: { 1906 // TODO: fully implement this 1907 log_error("HFP: unhandled call hold type %c", hfp_connection->line_buffer[0]); 1908 hfp_connection->command = HFP_CMD_NONE; 1909 hfp_connection->ok_pending = 1; 1910 hfp_connection->call_index = 0; 1911 1912 if (hfp_connection->line_buffer[1] != '\0'){ 1913 hfp_connection->call_index = atoi((char *)&hfp_connection->line_buffer[1]); 1914 } 1915 1916 switch (hfp_connection->line_buffer[0]){ 1917 case '0': 1918 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1919 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1920 break; 1921 case '1': 1922 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1923 // Where both a held and a waiting call exist, the above procedures shall apply to the 1924 // waiting call (i.e., not to the held call) in conflicting situation. 1925 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1926 break; 1927 case '2': 1928 // Places all active calls (if any exist) on hold 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_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1932 break; 1933 case '3': 1934 // Adds a held call to the conversation. 1935 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1936 break; 1937 case '4': 1938 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1939 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1940 break; 1941 default: 1942 break; 1943 } 1944 break; 1945 } 1946 case HFP_CMD_CALL_PHONE_NUMBER: 1947 hfp_connection->command = HFP_CMD_NONE; 1948 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1949 break; 1950 case HFP_CMD_REDIAL_LAST_NUMBER: 1951 hfp_connection->command = HFP_CMD_NONE; 1952 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1953 break; 1954 case HFP_CMD_ENABLE_CLIP: 1955 hfp_connection->command = HFP_CMD_NONE; 1956 hfp_connection->clip_enabled = hfp_connection->line_buffer[8] != '0'; 1957 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1958 hfp_connection->ok_pending = 1; 1959 break; 1960 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1961 hfp_connection->command = HFP_CMD_NONE; 1962 hfp_connection->call_waiting_notification_enabled = hfp_connection->line_buffer[8] != '0'; 1963 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1964 hfp_connection->ok_pending = 1; 1965 break; 1966 case HFP_CMD_SET_SPEAKER_GAIN: 1967 hfp_connection->command = HFP_CMD_NONE; 1968 hfp_connection->ok_pending = 1; 1969 printf("HF speaker gain = %u\n", hfp_connection->speaker_gain); 1970 break; 1971 case HFP_CMD_SET_MICROPHONE_GAIN: 1972 hfp_connection->command = HFP_CMD_NONE; 1973 hfp_connection->ok_pending = 1; 1974 printf("HF microphone gain = %u\n", hfp_connection->microphone_gain); 1975 break; 1976 default: 1977 break; 1978 } 1979 } 1980 1981 static void hfp_run(void){ 1982 btstack_linked_list_iterator_t it; 1983 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1984 while (btstack_linked_list_iterator_has_next(&it)){ 1985 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1986 hfp_run_for_context(hfp_connection); 1987 } 1988 } 1989 1990 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1991 switch (packet_type){ 1992 case RFCOMM_DATA_PACKET: 1993 hfp_handle_rfcomm_data(packet_type, channel, packet, size); 1994 break; 1995 case HCI_EVENT_PACKET: 1996 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1997 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1998 hfp_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1999 return; 2000 } 2001 hfp_handle_hci_event(packet_type, channel, packet, size); 2002 break; 2003 default: 2004 break; 2005 } 2006 2007 hfp_run(); 2008 } 2009 2010 2011 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2012 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2013 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2014 return; 2015 } 2016 int i; 2017 hfp_codecs_nr = codecs_nr; 2018 for (i=0; i < codecs_nr; i++){ 2019 hfp_codecs[i] = codecs[i]; 2020 } 2021 } 2022 2023 void hfp_ag_init_supported_features(uint32_t supported_features){ 2024 hfp_supported_features = supported_features; 2025 } 2026 2027 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2028 hfp_ag_indicators_nr = ag_indicators_nr; 2029 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2030 } 2031 2032 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2033 if (hf_indicators_nr > HFP_MAX_NUM_HF_INDICATORS) return; 2034 hfp_generic_status_indicators_nr = hf_indicators_nr; 2035 memcpy(hfp_generic_status_indicators, hf_indicators, hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2036 } 2037 2038 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2039 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2040 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2041 } 2042 2043 2044 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2045 // register for HCI events 2046 hci_event_callback_registration.callback = &packet_handler; 2047 hci_add_event_handler(&hci_event_callback_registration); 2048 2049 rfcomm_register_service(&packet_handler, rfcomm_channel_nr, 0xffff); 2050 2051 hfp_ag_response_and_hold_active = 0; 2052 subscriber_numbers = NULL; 2053 subscriber_numbers_count = 0; 2054 2055 hfp_set_packet_handler_for_rfcomm_connections(&packet_handler); 2056 2057 hfp_gsm_init(); 2058 } 2059 2060 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2061 hfp_establish_service_level_connection(bd_addr, SDP_Handsfree); 2062 } 2063 2064 void hfp_ag_release_service_level_connection(bd_addr_t bd_addr){ 2065 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2066 hfp_release_service_level_connection(hfp_connection); 2067 hfp_run_for_context(hfp_connection); 2068 } 2069 2070 void hfp_ag_report_extended_audio_gateway_error_result_code(bd_addr_t bd_addr, hfp_cme_error_t error){ 2071 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2072 if (!hfp_connection){ 2073 log_error("HFP HF: hfp_connection doesn't exist."); 2074 return; 2075 } 2076 hfp_connection->extended_audio_gateway_error = 0; 2077 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2078 return; 2079 } 2080 hfp_connection->extended_audio_gateway_error = error; 2081 hfp_run_for_context(hfp_connection); 2082 } 2083 2084 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2085 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2086 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2087 2088 hfp_connection->establish_audio_connection = 1; 2089 2090 if (!has_codec_negotiation_feature(hfp_connection)){ 2091 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using defaults"); 2092 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2093 } 2094 2095 switch (hfp_connection->codecs_state){ 2096 case HFP_CODECS_IDLE: 2097 case HFP_CODECS_RECEIVED_LIST: 2098 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2099 case HFP_CODECS_ERROR: 2100 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2101 break; 2102 default: 2103 break; 2104 } 2105 } 2106 2107 void hfp_ag_establish_audio_connection(bd_addr_t bd_addr){ 2108 hfp_ag_establish_service_level_connection(bd_addr); 2109 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2110 2111 hfp_connection->establish_audio_connection = 0; 2112 hfp_ag_setup_audio_connection(hfp_connection); 2113 hfp_run_for_context(hfp_connection); 2114 } 2115 2116 void hfp_ag_release_audio_connection(bd_addr_t bd_addr){ 2117 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2118 hfp_release_audio_connection(hfp_connection); 2119 hfp_run_for_context(hfp_connection); 2120 } 2121 2122 /** 2123 * @brief Enable in-band ring tone 2124 */ 2125 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2126 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2127 return; 2128 } 2129 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2130 2131 btstack_linked_list_iterator_t it; 2132 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2133 while (btstack_linked_list_iterator_has_next(&it)){ 2134 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2135 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2136 hfp_run_for_context(hfp_connection); 2137 } 2138 } 2139 2140 /** 2141 * @brief Called from GSM 2142 */ 2143 void hfp_ag_incoming_call(void){ 2144 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2145 } 2146 2147 /** 2148 * @brief number is stored. 2149 */ 2150 void hfp_ag_set_clip(uint8_t type, const char * number){ 2151 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2152 } 2153 2154 void hfp_ag_call_dropped(void){ 2155 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2156 } 2157 2158 // call from AG UI 2159 void hfp_ag_answer_incoming_call(void){ 2160 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2161 } 2162 2163 void hfp_ag_join_held_call(void){ 2164 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2165 } 2166 2167 void hfp_ag_terminate_call(void){ 2168 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2169 } 2170 2171 void hfp_ag_outgoing_call_ringing(void){ 2172 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2173 } 2174 2175 void hfp_ag_outgoing_call_established(void){ 2176 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2177 } 2178 2179 void hfp_ag_outgoing_call_rejected(void){ 2180 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2181 } 2182 2183 void hfp_ag_outgoing_call_accepted(void){ 2184 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2185 } 2186 2187 void hfp_ag_hold_incoming_call(void){ 2188 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2189 } 2190 2191 void hfp_ag_accept_held_incoming_call(void) { 2192 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2193 } 2194 2195 void hfp_ag_reject_held_incoming_call(void){ 2196 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2197 } 2198 2199 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2200 int indicator_index = get_ag_indicator_index_for_name(name); 2201 if (indicator_index < 0) return; 2202 hfp_ag_indicators[indicator_index].status = value; 2203 2204 2205 btstack_linked_list_iterator_t it; 2206 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2207 while (btstack_linked_list_iterator_has_next(&it)){ 2208 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2209 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2210 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2211 continue; 2212 } 2213 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2214 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2215 hfp_run_for_context(hfp_connection); 2216 } 2217 } 2218 2219 void hfp_ag_set_registration_status(int status){ 2220 hfp_ag_set_ag_indicator("service", status); 2221 } 2222 2223 void hfp_ag_set_signal_strength(int strength){ 2224 hfp_ag_set_ag_indicator("signal", strength); 2225 } 2226 2227 void hfp_ag_set_roaming_status(int status){ 2228 hfp_ag_set_ag_indicator("roam", status); 2229 } 2230 2231 void hfp_ag_set_battery_level(int level){ 2232 hfp_ag_set_ag_indicator("battchg", level); 2233 } 2234 2235 void hfp_ag_activate_voice_recognition(bd_addr_t bd_addr, int activate){ 2236 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2237 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2238 2239 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2240 printf("AG cannot acivate voice recognition - not supported by HF\n"); 2241 return; 2242 } 2243 2244 if (activate){ 2245 hfp_ag_establish_audio_connection(bd_addr); 2246 } 2247 2248 hfp_connection->ag_activate_voice_recognition = activate; 2249 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2250 hfp_run_for_context(hfp_connection); 2251 } 2252 2253 void hfp_ag_set_microphone_gain(bd_addr_t bd_addr, int gain){ 2254 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2255 if (hfp_connection->microphone_gain != gain){ 2256 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2257 hfp_connection->microphone_gain = gain; 2258 hfp_connection->send_microphone_gain = 1; 2259 } 2260 hfp_run_for_context(hfp_connection); 2261 } 2262 2263 void hfp_ag_set_speaker_gain(bd_addr_t bd_addr, int gain){ 2264 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2265 if (hfp_connection->speaker_gain != gain){ 2266 hfp_connection->speaker_gain = gain; 2267 hfp_connection->send_speaker_gain = 1; 2268 } 2269 hfp_run_for_context(hfp_connection); 2270 } 2271 2272 void hfp_ag_send_phone_number_for_voice_tag(bd_addr_t bd_addr, const char * number){ 2273 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2274 hfp_ag_set_clip(0, number); 2275 hfp_connection->send_phone_number_for_voice_tag = 1; 2276 } 2277 2278 void hfp_ag_reject_phone_number_for_voice_tag(bd_addr_t bd_addr){ 2279 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2280 hfp_connection->send_error = 1; 2281 } 2282 2283 void hfp_ag_send_dtmf_code_done(bd_addr_t bd_addr){ 2284 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2285 hfp_connection->ok_pending = 1; 2286 } 2287 2288 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2289 subscriber_numbers = numbers; 2290 subscriber_numbers_count = numbers_count; 2291 } 2292 2293 void hfp_ag_clear_last_dialed_number(void){ 2294 hfp_gsm_clear_last_dialed_number(); 2295 } 2296 2297 void hfp_ag_notify_incoming_call_waiting(bd_addr_t bd_addr){ 2298 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2299 if (!hfp_connection->call_waiting_notification_enabled) return; 2300 2301 hfp_connection->ag_notify_incoming_call_waiting = 1; 2302 hfp_run_for_context(hfp_connection); 2303 } 2304 2305