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 hfp_callback_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(hfp_callback_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 //printf("HFP_CODECS_RECEIVED_LIST \n"); 561 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 562 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 563 hfp_ag_ok(hfp_connection->rfcomm_cid); 564 return 1; 565 } 566 567 switch (hfp_connection->codecs_state){ 568 case HFP_CODECS_AG_SENT_COMMON_CODEC: 569 case HFP_CODECS_EXCHANGED: 570 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 571 break; 572 default: 573 break; 574 } 575 hfp_ag_ok(hfp_connection->rfcomm_cid); 576 return 1; 577 578 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 579 //printf(" HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP \n"); 580 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 581 hfp_ag_ok(hfp_connection->rfcomm_cid); 582 return 1; 583 584 case HFP_CMD_AG_SEND_COMMON_CODEC: 585 //printf(" HFP_CMD_AG_SEND_COMMON_CODEC \n"); 586 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 587 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 588 hfp_ag_cmd_suggest_codec(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 589 return 1; 590 591 case HFP_CMD_HF_CONFIRMED_CODEC: 592 //printf("HFP_CMD_HF_CONFIRMED_CODEC \n"); 593 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 594 hfp_connection->codecs_state = HFP_CODECS_ERROR; 595 hfp_ag_error(hfp_connection->rfcomm_cid); 596 return 1; 597 } 598 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 599 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 600 hfp_emit_event(hfp_callback, HFP_SUBEVENT_CODECS_CONNECTION_COMPLETE, 0); 601 hfp_ag_ok(hfp_connection->rfcomm_cid); 602 return 1; 603 default: 604 break; 605 } 606 return 0; 607 } 608 609 static void hfp_init_link_settings(hfp_connection_t * hfp_connection){ 610 // determine highest possible link setting 611 hfp_connection->link_setting = HFP_LINK_SETTINGS_D1; 612 if (hci_remote_esco_supported(hfp_connection->acl_handle)){ 613 hfp_connection->link_setting = HFP_LINK_SETTINGS_S3; 614 if ((hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) 615 && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4))){ 616 hfp_connection->link_setting = HFP_LINK_SETTINGS_S4; 617 } 618 } 619 } 620 621 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 622 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 623 hfp_emit_event(hfp_callback, HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED, 0); 624 625 hfp_init_link_settings(hfp_connection); 626 627 // if active call exist, set per-hfp_connection state active, too (when audio is on) 628 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 629 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 630 } 631 // if AG is ringing, also start ringing on the HF 632 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS && 633 hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 634 hfp_ag_hf_start_ringing(hfp_connection); 635 } 636 } 637 638 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 639 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 640 int done = 0; 641 // printf(" -> State machine: SLC\n"); 642 switch(hfp_connection->command){ 643 case HFP_CMD_SUPPORTED_FEATURES: 644 switch(hfp_connection->state){ 645 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 646 case HFP_EXCHANGE_SUPPORTED_FEATURES: 647 if (has_codec_negotiation_feature(hfp_connection)){ 648 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 649 } else { 650 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 651 } 652 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 653 return 1; 654 default: 655 break; 656 } 657 break; 658 case HFP_CMD_AVAILABLE_CODECS: 659 done = codecs_exchange_state_machine(hfp_connection); 660 661 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 662 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 663 } 664 return done; 665 666 case HFP_CMD_RETRIEVE_AG_INDICATORS: 667 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 668 hfp_connection->command = HFP_CMD_NONE; // prevent reentrance 669 int next_segment = hfp_ag_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 670 if (next_segment < hfp_ag_indicators_cmd_generator_num_segments(hfp_connection)){ 671 // prepare sending of next segment 672 hfp_connection->send_ag_indicators_segment = next_segment; 673 hfp_connection->command = HFP_CMD_RETRIEVE_AG_INDICATORS; 674 } else { 675 // done, go to next state 676 hfp_connection->send_ag_indicators_segment = 0; 677 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 678 } 679 return 1; 680 } 681 break; 682 683 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 684 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 685 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 686 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 687 return 1; 688 689 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 690 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 691 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 692 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 693 } else if (has_hf_indicators_feature(hfp_connection)){ 694 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 695 } else { 696 hfp_ag_slc_established(hfp_connection); 697 } 698 hfp_ag_set_indicator_status_update_cmd(hfp_connection->rfcomm_cid, 1); 699 return 1; 700 701 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 702 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 703 if (has_hf_indicators_feature(hfp_connection)){ 704 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 705 } 706 hfp_ag_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 707 if (!has_hf_indicators_feature(hfp_connection)){ 708 hfp_ag_slc_established(hfp_connection); 709 } 710 return 1; 711 712 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 713 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 714 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 715 hfp_ag_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 716 return 1; 717 718 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 719 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 720 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 721 hfp_ag_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 722 return 1; 723 724 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 725 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 726 hfp_ag_slc_established(hfp_connection); 727 hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 728 return 1; 729 default: 730 break; 731 } 732 return done; 733 } 734 735 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 736 // if (hfp_connection->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 737 738 int done = codecs_exchange_state_machine(hfp_connection); 739 if (done) return done; 740 741 // printf(" -> State machine: SLC Queries\n"); 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 // printf(" -> State machine: Audio hfp_connection\n"); 805 806 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return done; 807 if (hfp_connection->establish_audio_connection){ 808 hfp_connection->state = HFP_W4_SCO_CONNECTED; 809 hfp_connection->establish_audio_connection = 0; 810 hfp_setup_synchronous_connection(hfp_connection->acl_handle, hfp_connection->link_setting); 811 return 1; 812 } 813 return 0; 814 } 815 816 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 817 btstack_linked_list_iterator_t it; 818 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 819 820 while (btstack_linked_list_iterator_has_next(&it)){ 821 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 822 if ( & hfp_connection->hfp_timeout == ts) { 823 return hfp_connection; 824 } 825 } 826 return NULL; 827 } 828 829 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 830 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 831 if (!hfp_connection) return; 832 833 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 834 hfp_connection->ag_ring = 1; 835 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 836 837 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 838 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 839 840 hfp_run_for_context(hfp_connection); 841 } 842 843 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 844 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 845 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 846 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 847 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 848 } 849 850 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 851 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 852 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 853 } 854 855 // 856 // transitition implementations for hfp_ag_call_state_machine 857 // 858 859 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 860 if (use_in_band_tone()){ 861 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 862 hfp_ag_establish_audio_connection(hfp_connection->remote_addr); 863 } else { 864 hfp_timeout_start(hfp_connection); 865 hfp_connection->ag_ring = 1; 866 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 867 hfp_connection->call_state = HFP_CALL_RINGING; 868 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 869 } 870 } 871 872 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 873 hfp_connection->ag_ring = 0; 874 hfp_connection->ag_send_clip = 0; 875 hfp_timeout_stop(hfp_connection); 876 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_STOP_RINGINIG); 877 } 878 879 static void hfp_ag_trigger_incoming_call(void){ 880 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 881 if (indicator_index < 0) return; 882 883 btstack_linked_list_iterator_t it; 884 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 885 while (btstack_linked_list_iterator_has_next(&it)){ 886 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 887 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 888 if (hfp_connection->call_state == HFP_CALL_IDLE){ 889 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 890 hfp_ag_hf_start_ringing(hfp_connection); 891 } 892 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 893 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 894 } 895 hfp_run_for_context(hfp_connection); 896 } 897 } 898 899 static void hfp_ag_transfer_callsetup_state(void){ 900 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 901 if (indicator_index < 0) return; 902 903 btstack_linked_list_iterator_t it; 904 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 905 while (btstack_linked_list_iterator_has_next(&it)){ 906 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 907 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 908 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 909 hfp_run_for_context(hfp_connection); 910 } 911 } 912 913 static void hfp_ag_transfer_call_state(void){ 914 int indicator_index = get_ag_indicator_index_for_name("call"); 915 if (indicator_index < 0) return; 916 917 btstack_linked_list_iterator_t it; 918 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 919 while (btstack_linked_list_iterator_has_next(&it)){ 920 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 921 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 922 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 923 hfp_run_for_context(hfp_connection); 924 } 925 } 926 927 static void hfp_ag_transfer_callheld_state(void){ 928 int indicator_index = get_ag_indicator_index_for_name("callheld"); 929 if (indicator_index < 0) return; 930 931 btstack_linked_list_iterator_t it; 932 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 933 while (btstack_linked_list_iterator_has_next(&it)){ 934 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 935 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 936 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 937 hfp_run_for_context(hfp_connection); 938 } 939 } 940 941 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 942 943 int call_indicator_index = get_ag_indicator_index_for_name("call"); 944 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 945 946 btstack_linked_list_iterator_t it; 947 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 948 while (btstack_linked_list_iterator_has_next(&it)){ 949 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 950 if (hfp_connection->call_state != HFP_CALL_RINGING && 951 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 952 953 hfp_ag_hf_stop_ringing(hfp_connection); 954 if (hfp_connection == source){ 955 hfp_connection->ok_pending = 1; 956 957 if (use_in_band_tone()){ 958 hfp_connection->call_state = HFP_CALL_ACTIVE; 959 } else { 960 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 961 hfp_ag_establish_audio_connection(hfp_connection->remote_addr); 962 } 963 964 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 965 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 966 967 } else { 968 hfp_connection->call_state = HFP_CALL_IDLE; 969 } 970 hfp_run_for_context(hfp_connection); 971 } 972 } 973 974 static void hfp_ag_ag_accept_call(void){ 975 976 int call_indicator_index = get_ag_indicator_index_for_name("call"); 977 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 978 979 btstack_linked_list_iterator_t it; 980 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 981 while (btstack_linked_list_iterator_has_next(&it)){ 982 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 983 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 984 985 hfp_ag_hf_stop_ringing(hfp_connection); 986 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 987 988 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 989 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 990 991 hfp_run_for_context(hfp_connection); 992 break; // only single 993 } 994 } 995 996 static void hfp_ag_trigger_reject_call(void){ 997 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 998 btstack_linked_list_iterator_t it; 999 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1000 while (btstack_linked_list_iterator_has_next(&it)){ 1001 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1002 if (connection->call_state != HFP_CALL_RINGING && 1003 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1004 hfp_ag_hf_stop_ringing(connection); 1005 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1006 connection->call_state = HFP_CALL_IDLE; 1007 hfp_run_for_context(connection); 1008 } 1009 } 1010 1011 static void hfp_ag_trigger_terminate_call(void){ 1012 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1013 1014 btstack_linked_list_iterator_t it; 1015 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1016 while (btstack_linked_list_iterator_has_next(&it)){ 1017 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1018 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1019 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1020 hfp_connection->call_state = HFP_CALL_IDLE; 1021 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1022 hfp_connection->release_audio_connection = 1; 1023 hfp_run_for_context(hfp_connection); 1024 } 1025 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_TERMINATED); 1026 } 1027 1028 static void hfp_ag_set_callsetup_indicator(void){ 1029 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1030 if (!indicator){ 1031 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1032 }; 1033 indicator->status = hfp_gsm_callsetup_status(); 1034 } 1035 1036 static void hfp_ag_set_callheld_indicator(void){ 1037 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1038 if (!indicator){ 1039 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1040 }; 1041 indicator->status = hfp_gsm_callheld_status(); 1042 } 1043 1044 static void hfp_ag_set_call_indicator(void){ 1045 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1046 if (!indicator){ 1047 log_error("hfp_ag_set_call_state: call indicator is missing"); 1048 }; 1049 indicator->status = hfp_gsm_call_status(); 1050 } 1051 1052 static void hfp_ag_stop_ringing(void){ 1053 btstack_linked_list_iterator_t it; 1054 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1055 while (btstack_linked_list_iterator_has_next(&it)){ 1056 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1057 if (hfp_connection->call_state != HFP_CALL_RINGING && 1058 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1059 hfp_ag_hf_stop_ringing(hfp_connection); 1060 } 1061 } 1062 1063 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1064 btstack_linked_list_iterator_t it; 1065 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1066 while (btstack_linked_list_iterator_has_next(&it)){ 1067 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1068 if (hfp_connection->call_state == call_state) return hfp_connection; 1069 } 1070 return NULL; 1071 } 1072 1073 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1074 btstack_linked_list_iterator_t it; 1075 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1076 while (btstack_linked_list_iterator_has_next(&it)){ 1077 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1078 hfp_connection->send_response_and_hold_status = state + 1; 1079 } 1080 } 1081 1082 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1083 int indicator_index; 1084 switch (hfp_connection->call_state){ 1085 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1086 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1087 // we got event: audio hfp_connection established 1088 hfp_timeout_start(hfp_connection); 1089 hfp_connection->ag_ring = 1; 1090 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1091 hfp_connection->call_state = HFP_CALL_RINGING; 1092 hfp_connection->call_state = HFP_CALL_RINGING; 1093 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 1094 break; 1095 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1096 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1097 // we got event: audio hfp_connection established 1098 hfp_connection->call_state = HFP_CALL_ACTIVE; 1099 break; 1100 case HFP_CALL_W2_SEND_CALL_WAITING: 1101 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1102 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1103 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1104 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1105 break; 1106 default: 1107 break; 1108 } 1109 return 0; 1110 } 1111 // hfp_connection is used to identify originating HF 1112 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1113 int indicator_index; 1114 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1115 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1116 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1117 1118 //printf("hfp_ag_call_sm event %d \n", event); 1119 switch (event){ 1120 case HFP_AG_INCOMING_CALL: 1121 switch (hfp_gsm_call_status()){ 1122 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1123 switch (hfp_gsm_callsetup_status()){ 1124 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1125 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1126 hfp_ag_set_callsetup_indicator(); 1127 hfp_ag_trigger_incoming_call(); 1128 printf("AG rings\n"); 1129 break; 1130 default: 1131 break; 1132 } 1133 break; 1134 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1135 switch (hfp_gsm_callsetup_status()){ 1136 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1137 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1138 hfp_ag_set_callsetup_indicator(); 1139 hfp_ag_trigger_incoming_call(); 1140 printf("AG call waiting\n"); 1141 break; 1142 default: 1143 break; 1144 } 1145 break; 1146 } 1147 break; 1148 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1149 switch (hfp_gsm_call_status()){ 1150 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1151 switch (hfp_gsm_callsetup_status()){ 1152 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1153 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1154 hfp_ag_set_call_indicator(); 1155 hfp_ag_set_callsetup_indicator(); 1156 hfp_ag_ag_accept_call(); 1157 printf("AG answers call, accept call by GSM\n"); 1158 break; 1159 default: 1160 break; 1161 } 1162 break; 1163 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1164 switch (hfp_gsm_callsetup_status()){ 1165 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1166 printf("AG: current call is placed on hold, incoming call gets active\n"); 1167 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1168 hfp_ag_set_callsetup_indicator(); 1169 hfp_ag_set_callheld_indicator(); 1170 hfp_ag_transfer_callsetup_state(); 1171 hfp_ag_transfer_callheld_state(); 1172 break; 1173 default: 1174 break; 1175 } 1176 break; 1177 } 1178 break; 1179 1180 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1181 switch (hfp_gsm_call_status()){ 1182 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1183 switch (hfp_gsm_callheld_status()){ 1184 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1185 printf("AG: joining held call with active call\n"); 1186 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1187 hfp_ag_set_callheld_indicator(); 1188 hfp_ag_transfer_callheld_state(); 1189 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1190 break; 1191 default: 1192 break; 1193 } 1194 break; 1195 default: 1196 break; 1197 } 1198 break; 1199 1200 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1201 switch (hfp_gsm_call_status()){ 1202 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1203 switch (hfp_gsm_callsetup_status()){ 1204 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1205 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1206 hfp_ag_set_callsetup_indicator(); 1207 hfp_ag_set_call_indicator(); 1208 hfp_ag_hf_accept_call(hfp_connection); 1209 printf("HF answers call, accept call by GSM\n"); 1210 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_ANSWERED); 1211 break; 1212 default: 1213 break; 1214 } 1215 break; 1216 default: 1217 break; 1218 } 1219 break; 1220 1221 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1222 switch (hfp_gsm_call_status()){ 1223 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1224 switch (hfp_gsm_callsetup_status()){ 1225 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1226 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1227 hfp_ag_response_and_hold_active = 1; 1228 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1229 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1230 // as with regualr call 1231 hfp_ag_set_call_indicator(); 1232 hfp_ag_set_callsetup_indicator(); 1233 hfp_ag_ag_accept_call(); 1234 printf("AG response and hold - hold by AG\n"); 1235 break; 1236 default: 1237 break; 1238 } 1239 break; 1240 default: 1241 break; 1242 } 1243 break; 1244 1245 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1246 switch (hfp_gsm_call_status()){ 1247 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1248 switch (hfp_gsm_callsetup_status()){ 1249 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1250 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1251 hfp_ag_response_and_hold_active = 1; 1252 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1253 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1254 // as with regualr call 1255 hfp_ag_set_call_indicator(); 1256 hfp_ag_set_callsetup_indicator(); 1257 hfp_ag_hf_accept_call(hfp_connection); 1258 printf("AG response and hold - hold by HF\n"); 1259 break; 1260 default: 1261 break; 1262 } 1263 break; 1264 default: 1265 break; 1266 } 1267 break; 1268 1269 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1270 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1271 if (!hfp_ag_response_and_hold_active) break; 1272 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1273 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1274 hfp_ag_response_and_hold_active = 0; 1275 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1276 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1277 printf("Held Call accepted and active\n"); 1278 break; 1279 1280 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1281 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1282 if (!hfp_ag_response_and_hold_active) break; 1283 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1284 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1285 hfp_ag_response_and_hold_active = 0; 1286 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1287 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1288 // from terminate by ag 1289 hfp_ag_set_call_indicator(); 1290 hfp_ag_trigger_terminate_call(); 1291 break; 1292 1293 case HFP_AG_TERMINATE_CALL_BY_HF: 1294 switch (hfp_gsm_call_status()){ 1295 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1296 switch (hfp_gsm_callsetup_status()){ 1297 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1298 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1299 hfp_ag_set_callsetup_indicator(); 1300 hfp_ag_transfer_callsetup_state(); 1301 hfp_ag_trigger_reject_call(); 1302 printf("HF Rejected Incoming call, AG terminate call\n"); 1303 break; 1304 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1305 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1306 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1307 hfp_ag_set_callsetup_indicator(); 1308 hfp_ag_transfer_callsetup_state(); 1309 printf("AG terminate outgoing call process\n"); 1310 default: 1311 break; 1312 } 1313 break; 1314 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1315 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1316 hfp_ag_set_call_indicator(); 1317 hfp_ag_transfer_call_state(); 1318 hfp_connection->call_state = HFP_CALL_IDLE; 1319 printf("AG terminate call\n"); 1320 break; 1321 } 1322 break; 1323 1324 case HFP_AG_TERMINATE_CALL_BY_AG: 1325 switch (hfp_gsm_call_status()){ 1326 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1327 switch (hfp_gsm_callsetup_status()){ 1328 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1329 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1330 hfp_ag_set_callsetup_indicator(); 1331 hfp_ag_trigger_reject_call(); 1332 printf("AG Rejected Incoming call, AG terminate call\n"); 1333 break; 1334 default: 1335 break; 1336 } 1337 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1338 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1339 hfp_ag_set_callsetup_indicator(); 1340 hfp_ag_set_call_indicator(); 1341 hfp_ag_trigger_terminate_call(); 1342 printf("AG terminate call\n"); 1343 break; 1344 default: 1345 break; 1346 } 1347 break; 1348 case HFP_AG_CALL_DROPPED: 1349 switch (hfp_gsm_call_status()){ 1350 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1351 switch (hfp_gsm_callsetup_status()){ 1352 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1353 hfp_ag_stop_ringing(); 1354 printf("Incoming call interrupted\n"); 1355 break; 1356 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1357 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1358 printf("Outgoing call interrupted\n"); 1359 printf("AG notify call dropped\n"); 1360 break; 1361 default: 1362 break; 1363 } 1364 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1365 hfp_ag_set_callsetup_indicator(); 1366 hfp_ag_transfer_callsetup_state(); 1367 break; 1368 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1369 if (hfp_ag_response_and_hold_active) { 1370 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1371 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1372 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1373 } 1374 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1375 hfp_ag_set_callsetup_indicator(); 1376 hfp_ag_set_call_indicator(); 1377 hfp_ag_trigger_terminate_call(); 1378 printf("AG notify call dropped\n"); 1379 break; 1380 default: 1381 break; 1382 } 1383 break; 1384 1385 case HFP_AG_OUTGOING_CALL_INITIATED: 1386 // directly reject call if number of free slots is exceeded 1387 if (!hfp_gsm_call_possible()){ 1388 hfp_connection->send_error = 1; 1389 hfp_run_for_context(hfp_connection); 1390 break; 1391 } 1392 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1393 1394 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1395 1396 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1397 break; 1398 1399 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1400 // directly reject call if number of free slots is exceeded 1401 if (!hfp_gsm_call_possible()){ 1402 hfp_connection->send_error = 1; 1403 hfp_run_for_context(hfp_connection); 1404 break; 1405 } 1406 1407 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1408 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1409 1410 printf("\nRedial last number"); 1411 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1412 1413 if (strlen(last_dialed_number) > 0){ 1414 printf("\nLast number exists: accept call"); 1415 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1416 } else { 1417 printf("\nLast number missing: reject call"); 1418 hfp_ag_outgoing_call_rejected(); 1419 } 1420 break; 1421 } 1422 case HFP_AG_OUTGOING_CALL_REJECTED: 1423 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1424 if (!hfp_connection){ 1425 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1426 break; 1427 } 1428 1429 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1430 hfp_connection->call_state = HFP_CALL_IDLE; 1431 hfp_connection->send_error = 1; 1432 hfp_run_for_context(hfp_connection); 1433 break; 1434 1435 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1436 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1437 if (!hfp_connection){ 1438 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1439 break; 1440 } 1441 1442 hfp_connection->ok_pending = 1; 1443 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1444 1445 // trigger callsetup to be 1446 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1447 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1448 1449 hfp_ag_set_callsetup_indicator(); 1450 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1451 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1452 1453 // put current call on hold if active 1454 if (put_call_on_hold){ 1455 printf("AG putting current call on hold for new outgoing call\n"); 1456 hfp_ag_set_callheld_indicator(); 1457 indicator_index = get_ag_indicator_index_for_name("callheld"); 1458 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1459 } 1460 1461 // start audio if needed 1462 hfp_ag_establish_audio_connection(hfp_connection->remote_addr); 1463 break; 1464 } 1465 case HFP_AG_OUTGOING_CALL_RINGING: 1466 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1467 if (!hfp_connection){ 1468 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1469 break; 1470 } 1471 1472 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1473 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1474 hfp_ag_set_callsetup_indicator(); 1475 hfp_ag_transfer_callsetup_state(); 1476 break; 1477 1478 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1479 // get outgoing call 1480 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1481 if (!hfp_connection){ 1482 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1483 } 1484 if (!hfp_connection){ 1485 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1486 break; 1487 } 1488 1489 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1490 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1491 hfp_connection->call_state = HFP_CALL_ACTIVE; 1492 hfp_ag_set_callsetup_indicator(); 1493 hfp_ag_set_call_indicator(); 1494 hfp_ag_transfer_call_state(); 1495 hfp_ag_transfer_callsetup_state(); 1496 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1497 hfp_ag_set_callheld_indicator(); 1498 hfp_ag_transfer_callheld_state(); 1499 } 1500 break; 1501 } 1502 1503 case HFP_AG_CALL_HOLD_USER_BUSY: 1504 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1505 hfp_ag_set_callsetup_indicator(); 1506 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1507 hfp_connection->call_state = HFP_CALL_ACTIVE; 1508 printf("AG: Call Waiting, User Busy\n"); 1509 break; 1510 1511 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1512 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1513 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1514 1515 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1516 if (call_held || call_setup_in_progress){ 1517 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1518 1519 } 1520 1521 if (call_setup_in_progress){ 1522 printf("AG: Call Dropped, Accept new call\n"); 1523 hfp_ag_set_callsetup_indicator(); 1524 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1525 } else { 1526 printf("AG: Call Dropped, Resume held call\n"); 1527 } 1528 if (call_held){ 1529 hfp_ag_set_callheld_indicator(); 1530 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1531 } 1532 1533 hfp_connection->call_state = HFP_CALL_ACTIVE; 1534 break; 1535 } 1536 1537 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1538 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1539 // only update if callsetup changed 1540 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1541 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1542 1543 if (call_setup_in_progress){ 1544 printf("AG: Call on Hold, Accept new call\n"); 1545 hfp_ag_set_callsetup_indicator(); 1546 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1547 } else { 1548 printf("AG: Swap calls\n"); 1549 } 1550 1551 hfp_ag_set_callheld_indicator(); 1552 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1553 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1554 hfp_connection->call_state = HFP_CALL_ACTIVE; 1555 break; 1556 } 1557 1558 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1559 // Adds a held call to the conversation. 1560 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1561 printf("AG: Join 3-way-call\n"); 1562 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1563 hfp_ag_set_callheld_indicator(); 1564 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1565 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1566 } 1567 hfp_connection->call_state = HFP_CALL_ACTIVE; 1568 break; 1569 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1570 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1571 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1572 printf("AG: Transfer call -> Connect two calls and disconnect\n"); 1573 hfp_ag_set_call_indicator(); 1574 hfp_ag_set_callheld_indicator(); 1575 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1576 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1577 hfp_connection->call_state = HFP_CALL_IDLE; 1578 break; 1579 1580 default: 1581 break; 1582 } 1583 1584 1585 } 1586 1587 1588 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1589 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1590 if (!active_call) return; 1591 1592 int idx = active_call->index; 1593 hfp_enhanced_call_dir_t dir = active_call->direction; 1594 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1595 hfp_enhanced_call_mode_t mode = active_call->mode; 1596 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1597 uint8_t type = active_call->clip_type; 1598 char * number = active_call->clip_number; 1599 1600 char buffer[100]; 1601 // TODO: check length of a buffer, to fit the MTU 1602 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1603 if (number){ 1604 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ", \"%s\",%u", number, type); 1605 } 1606 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1607 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, 1608 mode, mpty, type, number); 1609 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1610 } 1611 1612 static void hfp_run_for_context(hfp_connection_t *hfp_connection){ 1613 if (!hfp_connection) return; 1614 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1615 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1616 return; 1617 } 1618 1619 if (hfp_connection->send_status_of_current_calls){ 1620 hfp_connection->ok_pending = 0; 1621 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1622 hfp_connection->next_call_index++; 1623 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1624 } else { 1625 hfp_connection->next_call_index = 0; 1626 hfp_connection->ok_pending = 1; 1627 hfp_connection->send_status_of_current_calls = 0; 1628 } 1629 return; 1630 } 1631 1632 if (hfp_connection->ag_notify_incoming_call_waiting){ 1633 hfp_connection->ag_notify_incoming_call_waiting = 0; 1634 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1635 return; 1636 } 1637 1638 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1639 hfp_connection->ok_pending = 0; 1640 hfp_connection->send_error = 0; 1641 hfp_connection->command = HFP_CMD_NONE; 1642 hfp_ag_error(hfp_connection->rfcomm_cid); 1643 return; 1644 } 1645 1646 if (hfp_connection->send_error){ 1647 hfp_connection->send_error = 0; 1648 hfp_connection->command = HFP_CMD_NONE; 1649 hfp_ag_error(hfp_connection->rfcomm_cid); 1650 return; 1651 } 1652 1653 // note: before update AG indicators and ok_pending 1654 if (hfp_connection->send_response_and_hold_status){ 1655 int status = hfp_connection->send_response_and_hold_status - 1; 1656 hfp_connection->send_response_and_hold_status = 0; 1657 hfp_ag_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1658 return; 1659 } 1660 1661 if (hfp_connection->ok_pending){ 1662 hfp_connection->ok_pending = 0; 1663 hfp_connection->command = HFP_CMD_NONE; 1664 hfp_ag_ok(hfp_connection->rfcomm_cid); 1665 return; 1666 } 1667 1668 // update AG indicators 1669 if (hfp_connection->ag_indicators_status_update_bitmap){ 1670 int i; 1671 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1672 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1673 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1674 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1675 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1676 break; 1677 } 1678 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1679 return; 1680 } 1681 } 1682 } 1683 1684 if (hfp_connection->ag_ring){ 1685 hfp_connection->ag_ring = 0; 1686 hfp_connection->command = HFP_CMD_NONE; 1687 hfp_ag_ring(hfp_connection->rfcomm_cid); 1688 return; 1689 } 1690 1691 if (hfp_connection->ag_send_clip){ 1692 hfp_connection->ag_send_clip = 0; 1693 hfp_connection->command = HFP_CMD_NONE; 1694 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1695 return; 1696 } 1697 1698 if (hfp_connection->send_phone_number_for_voice_tag){ 1699 hfp_connection->send_phone_number_for_voice_tag = 0; 1700 hfp_connection->command = HFP_CMD_NONE; 1701 hfp_connection->ok_pending = 1; 1702 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1703 return; 1704 } 1705 1706 if (hfp_connection->send_subscriber_number){ 1707 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1708 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1709 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1710 } else { 1711 hfp_connection->send_subscriber_number = 0; 1712 hfp_connection->next_subscriber_number_to_send = 0; 1713 hfp_ag_ok(hfp_connection->rfcomm_cid); 1714 } 1715 hfp_connection->command = HFP_CMD_NONE; 1716 } 1717 1718 if (hfp_connection->send_microphone_gain){ 1719 hfp_connection->send_microphone_gain = 0; 1720 hfp_connection->command = HFP_CMD_NONE; 1721 hfp_ag_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1722 return; 1723 } 1724 1725 if (hfp_connection->send_speaker_gain){ 1726 hfp_connection->send_speaker_gain = 0; 1727 hfp_connection->command = HFP_CMD_NONE; 1728 hfp_ag_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1729 return; 1730 } 1731 1732 if (hfp_connection->send_ag_status_indicators){ 1733 hfp_connection->send_ag_status_indicators = 0; 1734 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1735 return; 1736 } 1737 1738 int done = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1739 if (!done){ 1740 done = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1741 } 1742 1743 if (!done){ 1744 done = call_setup_state_machine(hfp_connection); 1745 } 1746 1747 if (!done){ 1748 done = hfp_ag_run_for_audio_connection(hfp_connection); 1749 } 1750 1751 if (hfp_connection->command == HFP_CMD_NONE && !done){ 1752 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1753 switch(hfp_connection->state){ 1754 case HFP_W2_DISCONNECT_RFCOMM: 1755 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1756 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1757 break; 1758 default: 1759 break; 1760 } 1761 } 1762 if (done){ 1763 hfp_connection->command = HFP_CMD_NONE; 1764 } 1765 } 1766 1767 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1768 int i; 1769 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1770 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1771 if (indicator->uuid == number){ 1772 return indicator; 1773 } 1774 } 1775 return NULL; 1776 } 1777 1778 static void hfp_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1779 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1780 if (!hfp_connection) return; 1781 1782 char last_char = packet[size-1]; 1783 packet[size-1] = 0; 1784 log_info("HFP_RX %s", packet); 1785 packet[size-1] = last_char; 1786 1787 int pos; 1788 for (pos = 0; pos < size ; pos++){ 1789 hfp_parse(hfp_connection, packet[pos], 0); 1790 } 1791 hfp_generic_status_indicator_t * indicator; 1792 int value; 1793 switch(hfp_connection->command){ 1794 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1795 if (hfp_ag_response_and_hold_active){ 1796 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1797 } 1798 hfp_connection->ok_pending = 1; 1799 break; 1800 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1801 value = atoi((char *)&hfp_connection->line_buffer[0]); 1802 printf("HF Response and Hold: %u\n", value); 1803 switch(value){ 1804 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1805 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1806 break; 1807 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1808 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1809 break; 1810 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1811 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1812 break; 1813 default: 1814 break; 1815 } 1816 hfp_connection->ok_pending = 1; 1817 break; 1818 case HFP_CMD_HF_INDICATOR_STATUS: 1819 hfp_connection->command = HFP_CMD_NONE; 1820 // find indicator by assigned number 1821 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1822 if (!indicator){ 1823 hfp_connection->send_error = 1; 1824 break; 1825 } 1826 value = atoi((char *)&hfp_connection->line_buffer[0]); 1827 switch (indicator->uuid){ 1828 case 1: // enhanced security 1829 if (value > 1) { 1830 hfp_connection->send_error = 1; 1831 return; 1832 } 1833 printf("HF Indicator 'enhanced security' set to %u\n", value); 1834 break; 1835 case 2: // battery level 1836 if (value > 100){ 1837 hfp_connection->send_error = 1; 1838 return; 1839 } 1840 printf("HF Indicator 'battery' set to %u\n", value); 1841 break; 1842 default: 1843 printf("HF Indicator unknown set to %u\n", value); 1844 break; 1845 } 1846 hfp_connection->ok_pending = 1; 1847 break; 1848 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1849 // expected by SLC state machine 1850 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1851 hfp_connection->send_ag_indicators_segment = 0; 1852 hfp_connection->send_ag_status_indicators = 1; 1853 break; 1854 case HFP_CMD_LIST_CURRENT_CALLS: 1855 hfp_connection->command = HFP_CMD_NONE; 1856 hfp_connection->next_call_index = 0; 1857 hfp_connection->send_status_of_current_calls = 1; 1858 break; 1859 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1860 if (subscriber_numbers_count == 0){ 1861 hfp_ag_ok(hfp_connection->rfcomm_cid); 1862 break; 1863 } 1864 hfp_connection->next_subscriber_number_to_send = 0; 1865 hfp_connection->send_subscriber_number = 1; 1866 break; 1867 case HFP_CMD_TRANSMIT_DTMF_CODES: 1868 hfp_connection->command = HFP_CMD_NONE; 1869 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &hfp_connection->line_buffer[0]); 1870 break; 1871 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1872 hfp_connection->command = HFP_CMD_NONE; 1873 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1874 break; 1875 case HFP_CMD_TURN_OFF_EC_AND_NR: 1876 hfp_connection->command = HFP_CMD_NONE; 1877 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1878 hfp_connection->ok_pending = 1; 1879 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1880 printf("AG: EC/NR = %u\n", hfp_connection->ag_echo_and_noise_reduction); 1881 } else { 1882 hfp_connection->send_error = 1; 1883 } 1884 break; 1885 case HFP_CMD_CALL_ANSWERED: 1886 hfp_connection->command = HFP_CMD_NONE; 1887 printf("HFP: ATA\n"); 1888 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1889 break; 1890 case HFP_CMD_HANG_UP_CALL: 1891 hfp_connection->command = HFP_CMD_NONE; 1892 hfp_connection->ok_pending = 1; 1893 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1894 break; 1895 case HFP_CMD_CALL_HOLD: { 1896 // TODO: fully implement this 1897 log_error("HFP: unhandled call hold type %c", hfp_connection->line_buffer[0]); 1898 hfp_connection->command = HFP_CMD_NONE; 1899 hfp_connection->ok_pending = 1; 1900 hfp_connection->call_index = 0; 1901 1902 if (hfp_connection->line_buffer[1] != '\0'){ 1903 hfp_connection->call_index = atoi((char *)&hfp_connection->line_buffer[1]); 1904 } 1905 1906 switch (hfp_connection->line_buffer[0]){ 1907 case '0': 1908 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1909 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1910 break; 1911 case '1': 1912 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1913 // Where both a held and a waiting call exist, the above procedures shall apply to the 1914 // waiting call (i.e., not to the held call) in conflicting situation. 1915 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1916 break; 1917 case '2': 1918 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1919 // Where both a held and a waiting call exist, the above procedures shall apply to the 1920 // waiting call (i.e., not to the held call) in conflicting situation. 1921 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1922 break; 1923 case '3': 1924 // Adds a held call to the conversation. 1925 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1926 break; 1927 case '4': 1928 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1929 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1930 break; 1931 default: 1932 break; 1933 } 1934 break; 1935 } 1936 case HFP_CMD_CALL_PHONE_NUMBER: 1937 hfp_connection->command = HFP_CMD_NONE; 1938 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1939 break; 1940 case HFP_CMD_REDIAL_LAST_NUMBER: 1941 hfp_connection->command = HFP_CMD_NONE; 1942 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1943 break; 1944 case HFP_CMD_ENABLE_CLIP: 1945 hfp_connection->command = HFP_CMD_NONE; 1946 hfp_connection->clip_enabled = hfp_connection->line_buffer[8] != '0'; 1947 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1948 hfp_connection->ok_pending = 1; 1949 break; 1950 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1951 hfp_connection->command = HFP_CMD_NONE; 1952 hfp_connection->call_waiting_notification_enabled = hfp_connection->line_buffer[8] != '0'; 1953 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1954 hfp_connection->ok_pending = 1; 1955 break; 1956 case HFP_CMD_SET_SPEAKER_GAIN: 1957 hfp_connection->command = HFP_CMD_NONE; 1958 hfp_connection->ok_pending = 1; 1959 printf("HF speaker gain = %u\n", hfp_connection->speaker_gain); 1960 break; 1961 case HFP_CMD_SET_MICROPHONE_GAIN: 1962 hfp_connection->command = HFP_CMD_NONE; 1963 hfp_connection->ok_pending = 1; 1964 printf("HF microphone gain = %u\n", hfp_connection->microphone_gain); 1965 break; 1966 default: 1967 break; 1968 } 1969 } 1970 1971 static void hfp_run(void){ 1972 btstack_linked_list_iterator_t it; 1973 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1974 while (btstack_linked_list_iterator_has_next(&it)){ 1975 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1976 hfp_run_for_context(hfp_connection); 1977 } 1978 } 1979 1980 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1981 switch (packet_type){ 1982 case RFCOMM_DATA_PACKET: 1983 hfp_handle_rfcomm_data(packet_type, channel, packet, size); 1984 break; 1985 case HCI_EVENT_PACKET: 1986 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1987 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1988 hfp_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1989 return; 1990 } 1991 hfp_handle_hci_event(packet_type, channel, packet, size); 1992 break; 1993 default: 1994 break; 1995 } 1996 1997 hfp_run(); 1998 } 1999 2000 2001 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2002 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2003 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2004 return; 2005 } 2006 int i; 2007 hfp_codecs_nr = codecs_nr; 2008 for (i=0; i < codecs_nr; i++){ 2009 hfp_codecs[i] = codecs[i]; 2010 } 2011 } 2012 2013 void hfp_ag_init_supported_features(uint32_t supported_features){ 2014 hfp_supported_features = supported_features; 2015 } 2016 2017 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2018 hfp_ag_indicators_nr = ag_indicators_nr; 2019 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2020 } 2021 2022 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2023 if (hf_indicators_nr > HFP_MAX_NUM_HF_INDICATORS) return; 2024 hfp_generic_status_indicators_nr = hf_indicators_nr; 2025 memcpy(hfp_generic_status_indicators, hf_indicators, hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2026 } 2027 2028 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2029 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2030 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2031 } 2032 2033 2034 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2035 // register for HCI events 2036 hci_event_callback_registration.callback = &packet_handler; 2037 hci_add_event_handler(&hci_event_callback_registration); 2038 2039 l2cap_init(); 2040 2041 rfcomm_register_service(&packet_handler, rfcomm_channel_nr, 0xffff); 2042 2043 hfp_ag_response_and_hold_active = 0; 2044 subscriber_numbers = NULL; 2045 subscriber_numbers_count = 0; 2046 2047 hfp_set_packet_handler_for_rfcomm_connections(&packet_handler); 2048 2049 hfp_gsm_init(); 2050 } 2051 2052 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2053 hfp_establish_service_level_connection(bd_addr, SDP_Handsfree); 2054 } 2055 2056 void hfp_ag_release_service_level_connection(bd_addr_t bd_addr){ 2057 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2058 hfp_release_service_level_connection(hfp_connection); 2059 hfp_run_for_context(hfp_connection); 2060 } 2061 2062 void hfp_ag_report_extended_audio_gateway_error_result_code(bd_addr_t bd_addr, hfp_cme_error_t error){ 2063 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2064 if (!hfp_connection){ 2065 log_error("HFP HF: hfp_connection doesn't exist."); 2066 return; 2067 } 2068 hfp_connection->extended_audio_gateway_error = 0; 2069 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2070 return; 2071 } 2072 hfp_connection->extended_audio_gateway_error = error; 2073 hfp_run_for_context(hfp_connection); 2074 } 2075 2076 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2077 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2078 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2079 2080 hfp_connection->establish_audio_connection = 1; 2081 2082 if (!has_codec_negotiation_feature(hfp_connection)){ 2083 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using defaults"); 2084 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2085 } 2086 2087 switch (hfp_connection->codecs_state){ 2088 case HFP_CODECS_IDLE: 2089 case HFP_CODECS_RECEIVED_LIST: 2090 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2091 case HFP_CODECS_ERROR: 2092 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2093 break; 2094 default: 2095 break; 2096 } 2097 } 2098 2099 void hfp_ag_establish_audio_connection(bd_addr_t bd_addr){ 2100 hfp_ag_establish_service_level_connection(bd_addr); 2101 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2102 2103 hfp_connection->establish_audio_connection = 0; 2104 hfp_ag_setup_audio_connection(hfp_connection); 2105 hfp_run_for_context(hfp_connection); 2106 } 2107 2108 void hfp_ag_release_audio_connection(bd_addr_t bd_addr){ 2109 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2110 hfp_release_audio_connection(hfp_connection); 2111 hfp_run_for_context(hfp_connection); 2112 } 2113 2114 /** 2115 * @brief Enable in-band ring tone 2116 */ 2117 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2118 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2119 return; 2120 } 2121 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2122 2123 btstack_linked_list_iterator_t it; 2124 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2125 while (btstack_linked_list_iterator_has_next(&it)){ 2126 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2127 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2128 hfp_run_for_context(hfp_connection); 2129 } 2130 } 2131 2132 /** 2133 * @brief Called from GSM 2134 */ 2135 void hfp_ag_incoming_call(void){ 2136 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2137 } 2138 2139 /** 2140 * @brief number is stored. 2141 */ 2142 void hfp_ag_set_clip(uint8_t type, const char * number){ 2143 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2144 } 2145 2146 void hfp_ag_call_dropped(void){ 2147 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2148 } 2149 2150 // call from AG UI 2151 void hfp_ag_answer_incoming_call(void){ 2152 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2153 } 2154 2155 void hfp_ag_join_held_call(void){ 2156 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2157 } 2158 2159 void hfp_ag_terminate_call(void){ 2160 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2161 } 2162 2163 void hfp_ag_outgoing_call_ringing(void){ 2164 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2165 } 2166 2167 void hfp_ag_outgoing_call_established(void){ 2168 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2169 } 2170 2171 void hfp_ag_outgoing_call_rejected(void){ 2172 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2173 } 2174 2175 void hfp_ag_outgoing_call_accepted(void){ 2176 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2177 } 2178 2179 void hfp_ag_hold_incoming_call(void){ 2180 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2181 } 2182 2183 void hfp_ag_accept_held_incoming_call(void) { 2184 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2185 } 2186 2187 void hfp_ag_reject_held_incoming_call(void){ 2188 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2189 } 2190 2191 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2192 int indicator_index = get_ag_indicator_index_for_name(name); 2193 if (indicator_index < 0) return; 2194 hfp_ag_indicators[indicator_index].status = value; 2195 2196 2197 btstack_linked_list_iterator_t it; 2198 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2199 while (btstack_linked_list_iterator_has_next(&it)){ 2200 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2201 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2202 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2203 continue; 2204 } 2205 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2206 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2207 hfp_run_for_context(hfp_connection); 2208 } 2209 } 2210 2211 void hfp_ag_set_registration_status(int status){ 2212 hfp_ag_set_ag_indicator("service", status); 2213 } 2214 2215 void hfp_ag_set_signal_strength(int strength){ 2216 hfp_ag_set_ag_indicator("signal", strength); 2217 } 2218 2219 void hfp_ag_set_roaming_status(int status){ 2220 hfp_ag_set_ag_indicator("roam", status); 2221 } 2222 2223 void hfp_ag_set_battery_level(int level){ 2224 hfp_ag_set_ag_indicator("battchg", level); 2225 } 2226 2227 void hfp_ag_activate_voice_recognition(bd_addr_t bd_addr, int activate){ 2228 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2229 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2230 2231 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2232 printf("AG cannot acivate voice recognition - not supported by HF\n"); 2233 return; 2234 } 2235 2236 if (activate){ 2237 hfp_ag_establish_audio_connection(bd_addr); 2238 } 2239 2240 hfp_connection->ag_activate_voice_recognition = activate; 2241 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2242 hfp_run_for_context(hfp_connection); 2243 } 2244 2245 void hfp_ag_set_microphone_gain(bd_addr_t bd_addr, int gain){ 2246 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2247 if (hfp_connection->microphone_gain != gain){ 2248 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2249 hfp_connection->microphone_gain = gain; 2250 hfp_connection->send_microphone_gain = 1; 2251 } 2252 hfp_run_for_context(hfp_connection); 2253 } 2254 2255 void hfp_ag_set_speaker_gain(bd_addr_t bd_addr, int gain){ 2256 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2257 if (hfp_connection->speaker_gain != gain){ 2258 hfp_connection->speaker_gain = gain; 2259 hfp_connection->send_speaker_gain = 1; 2260 } 2261 hfp_run_for_context(hfp_connection); 2262 } 2263 2264 void hfp_ag_send_phone_number_for_voice_tag(bd_addr_t bd_addr, const char * number){ 2265 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2266 hfp_ag_set_clip(0, number); 2267 hfp_connection->send_phone_number_for_voice_tag = 1; 2268 } 2269 2270 void hfp_ag_reject_phone_number_for_voice_tag(bd_addr_t bd_addr){ 2271 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2272 hfp_connection->send_error = 1; 2273 } 2274 2275 void hfp_ag_send_dtmf_code_done(bd_addr_t bd_addr){ 2276 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2277 hfp_connection->ok_pending = 1; 2278 } 2279 2280 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2281 subscriber_numbers = numbers; 2282 subscriber_numbers_count = numbers_count; 2283 } 2284 2285 void hfp_ag_clear_last_dialed_number(void){ 2286 hfp_gsm_clear_last_dialed_number(); 2287 } 2288 2289 void hfp_ag_notify_incoming_call_waiting(bd_addr_t bd_addr){ 2290 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2291 if (!hfp_connection->call_waiting_notification_enabled) return; 2292 2293 hfp_connection->ag_notify_incoming_call_waiting = 1; 2294 hfp_run_for_context(hfp_connection); 2295 } 2296 2297