1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 // ***************************************************************************** 39 // 40 // HFP Audio Gateway (AG) unit 41 // 42 // ***************************************************************************** 43 44 #include "btstack_config.h" 45 46 #include <stdint.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 51 #include "hci_cmd.h" 52 #include "btstack_run_loop.h" 53 54 #include "hci.h" 55 #include "btstack_memory.h" 56 #include "hci_dump.h" 57 #include "l2cap.h" 58 #include "btstack_debug.h" 59 #include "classic/core.h" 60 #include "classic/hfp.h" 61 #include "classic/hfp_ag.h" 62 #include "classic/hfp_gsm_model.h" 63 #include "classic/sdp_client_rfcomm.h" 64 #include "classic/sdp_server.h" 65 #include "classic/sdp_util.h" 66 67 // private prototypes 68 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 69 static void hfp_run_for_context(hfp_connection_t *context); 70 static void hfp_ag_setup_audio_connection(hfp_connection_t * connection); 71 static void hfp_ag_hf_start_ringing(hfp_connection_t * context); 72 73 // public prototypes 74 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 75 int get_hfp_generic_status_indicators_nr(void); 76 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 77 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 78 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 79 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 80 81 // gobals 82 static const char default_hfp_ag_service_name[] = "Voice gateway"; 83 84 static uint16_t hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 85 86 static uint8_t hfp_codecs_nr = 0; 87 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 88 89 static int hfp_ag_indicators_nr = 0; 90 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_AG_INDICATORS]; 91 92 static int hfp_generic_status_indicators_nr = 0; 93 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_HF_INDICATORS]; 94 95 static int hfp_ag_call_hold_services_nr = 0; 96 static char *hfp_ag_call_hold_services[6]; 97 static hfp_callback_t hfp_callback; 98 99 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 100 static int hfp_ag_response_and_hold_active = 0; 101 102 // Subcriber information entries 103 static hfp_phone_number_t * subscriber_numbers = NULL; 104 static int subscriber_numbers_count = 0; 105 106 static btstack_packet_callback_registration_t hci_event_callback_registration; 107 static void hfp_run_for_context(hfp_connection_t *hfp_connection); 108 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 109 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection); 110 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection); 111 112 113 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 114 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 115 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 116 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 117 } 118 return hfp_connection->ag_indicators_nr; 119 } 120 121 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 122 // TODO: save only value, and value changed in the hfp_connection? 123 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 124 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 125 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 126 } 127 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 128 } 129 130 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 131 int i; 132 for (i = 0; i < hfp_ag_indicators_nr; i++){ 133 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 134 return &hfp_ag_indicators[i]; 135 } 136 } 137 return NULL; 138 } 139 140 static int get_ag_indicator_index_for_name(const char * name){ 141 int i; 142 for (i = 0; i < hfp_ag_indicators_nr; i++){ 143 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 144 return i; 145 } 146 } 147 return -1; 148 } 149 150 151 void hfp_ag_register_packet_handler(hfp_callback_t callback){ 152 if (callback == NULL){ 153 log_error("hfp_ag_register_packet_handler called with NULL callback"); 154 return; 155 } 156 hfp_callback = callback; 157 hfp_set_callback(callback); 158 } 159 160 static int use_in_band_tone(void){ 161 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 162 } 163 164 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 165 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 166 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 167 return hf && ag; 168 } 169 170 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 171 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 172 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 173 return hf && ag; 174 } 175 176 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 177 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 178 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 179 return hf && ag; 180 } 181 182 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){ 183 if (!name){ 184 name = default_hfp_ag_service_name; 185 } 186 hfp_create_sdp_record(service, service_record_handle, SDP_HandsfreeAudioGateway, rfcomm_channel_nr, name); 187 188 /* 189 * 0x01 – Ability to reject a call 190 * 0x00 – No ability to reject a call 191 */ 192 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 193 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 194 195 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 196 de_add_number(service, DE_UINT, DE_SIZE_16, supported_features); 197 } 198 199 static int hfp_ag_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 200 char buffer[20]; 201 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 202 return send_str_over_rfcomm(cid, buffer); 203 } 204 205 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 206 char buffer[40]; 207 sprintf(buffer, "\r\n%s:%d\r\n\r\nOK\r\n", HFP_SUPPORTED_FEATURES, hfp_supported_features); 208 return send_str_over_rfcomm(cid, buffer); 209 } 210 211 static int hfp_ag_ok(uint16_t cid){ 212 char buffer[10]; 213 sprintf(buffer, "\r\nOK\r\n"); 214 return send_str_over_rfcomm(cid, buffer); 215 } 216 217 static int hfp_ag_ring(uint16_t cid){ 218 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 219 } 220 221 static int hfp_ag_send_clip(uint16_t cid){ 222 char buffer[50]; 223 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 224 return send_str_over_rfcomm(cid, buffer); 225 } 226 227 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 228 char buffer[50]; 229 sprintf(buffer, "\r\n%s: ,\"%s\",%u, , \r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 230 return send_str_over_rfcomm(cid, buffer); 231 } 232 233 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 234 char buffer[50]; 235 sprintf(buffer, "\r\n%s: %s\r\n", HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 236 return send_str_over_rfcomm(cid, buffer); 237 } 238 239 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 240 char buffer[50]; 241 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 242 return send_str_over_rfcomm(cid, buffer); 243 } 244 245 static int hfp_ag_error(uint16_t cid){ 246 char buffer[10]; 247 sprintf(buffer, "\r\nERROR\r\n"); 248 return send_str_over_rfcomm(cid, buffer); 249 } 250 251 static int hfp_ag_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 252 char buffer[20]; 253 sprintf(buffer, "\r\n%s=%d\r\n", HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 254 return send_str_over_rfcomm(cid, buffer); 255 } 256 257 // fast & small implementation for fixed int size 258 static int string_len_for_uint32(uint32_t i){ 259 if (i < 10) return 1; 260 if (i < 100) return 2; 261 if (i < 1000) return 3; 262 if (i < 10000) return 4; 263 if (i < 100000) return 5; 264 if (i < 1000000) return 6; 265 if (i < 10000000) return 7; 266 if (i < 100000000) return 8; 267 if (i < 1000000000) return 9; 268 return 10; 269 } 270 271 // get size for indicator string 272 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 273 // template: ("$NAME",($MIN,$MAX)) 274 return 8 + strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 275 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 276 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 277 } 278 279 // store indicator 280 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer){ 281 sprintf((char *) buffer, "(\"%s\",(%d,%d)),", 282 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 283 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 284 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 285 } 286 287 // structure: header [indicator [comma indicator]] footer 288 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 289 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 290 if (!num_indicators) return 2; 291 return 3 + (num_indicators-1) * 2; 292 } 293 294 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 295 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 296 if (index == 0) { 297 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 298 } 299 index--; 300 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 301 int indicator_index = index >> 1; 302 if ((index & 1) == 0){ 303 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 304 } 305 if (indicator_index == num_indicators - 1){ 306 return 8; // "\r\n\r\nOK\r\n" 307 } 308 return 1; // comma 309 } 310 311 static void hgp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer){ 312 if (index == 0){ 313 *buffer++ = '\r'; 314 *buffer++ = '\n'; 315 int len = strlen(HFP_INDICATOR); 316 memcpy(buffer, HFP_INDICATOR, len); 317 buffer += len; 318 *buffer++ = ':'; 319 return; 320 } 321 index--; 322 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 323 int indicator_index = index >> 1; 324 if ((index & 1) == 0){ 325 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer); 326 return; 327 } 328 if (indicator_index == num_indicators-1){ 329 memcpy(buffer, "\r\n\r\nOK\r\n", 8); 330 return; 331 } 332 *buffer = ','; 333 } 334 335 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 336 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 337 int i; 338 int offset = 0; 339 for (i = 0; i < hfp_generic_status_indicators_nr-1; i++) { 340 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 341 } 342 if (i < hfp_generic_status_indicators_nr){ 343 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 344 } 345 return offset; 346 } 347 348 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 349 if (buffer_size < hfp_generic_status_indicators_nr * 3) return 0; 350 int i; 351 int offset = 0; 352 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 353 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); 354 } 355 return offset; 356 } 357 358 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 359 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 360 int i; 361 int offset = 0; 362 for (i = 0; i < hfp_ag_indicators_nr-1; i++) { 363 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 364 } 365 if (i<hfp_ag_indicators_nr){ 366 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 367 } 368 return offset; 369 } 370 371 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 372 if (buffer_size < hfp_ag_call_hold_services_nr * 3) return 0; 373 int i; 374 int offset = snprintf(buffer, buffer_size, "("); 375 for (i = 0; i < hfp_ag_call_hold_services_nr-1; i++) { 376 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 377 } 378 if (i<hfp_ag_call_hold_services_nr){ 379 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 380 } 381 return offset; 382 } 383 384 static int hfp_ag_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 385 int start_segment, int num_segments, 386 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 387 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer)){ 388 389 // assumes: can send now == true 390 // assumes: num segments > 0 391 rfcomm_reserve_packet_buffer(); 392 int mtu = rfcomm_get_max_frame_size(cid); 393 uint8_t * data = rfcomm_get_outgoing_buffer(); 394 int offset = 0; 395 int segment = start_segment; 396 while (segment < num_segments){ 397 int segment_len = get_segment_len(hfp_connection, segment); 398 if (offset + segment_len <= mtu){ 399 store_segment(hfp_connection, segment, data+offset); 400 offset += segment_len; 401 segment++; 402 } 403 } 404 rfcomm_send_prepared(cid, offset); 405 return segment; 406 } 407 408 // returns next segment to store 409 static int hfp_ag_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 410 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 411 return hfp_ag_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 412 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 413 } 414 415 static int hfp_ag_retrieve_indicators_status_cmd(uint16_t cid){ 416 char buffer[40]; 417 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_INDICATOR); 418 offset += hfp_ag_indicators_status_join(buffer+offset, sizeof(buffer)-offset); 419 420 buffer[offset] = 0; 421 422 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 423 buffer[offset] = 0; 424 return send_str_over_rfcomm(cid, buffer); 425 } 426 427 static int hfp_ag_set_indicator_status_update_cmd(uint16_t cid, uint8_t activate){ 428 // AT\r\n%s:3,0,0,%d\r\n 429 return hfp_ag_ok(cid); 430 } 431 432 433 static int hfp_ag_retrieve_can_hold_call_cmd(uint16_t cid){ 434 char buffer[40]; 435 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 436 offset += hfp_ag_call_services_join(buffer+offset, sizeof(buffer)-offset); 437 438 buffer[offset] = 0; 439 440 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 441 buffer[offset] = 0; 442 return send_str_over_rfcomm(cid, buffer); 443 } 444 445 446 static int hfp_ag_list_supported_generic_status_indicators_cmd(uint16_t cid){ 447 return hfp_ag_ok(cid); 448 } 449 450 static int hfp_ag_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 451 char buffer[40]; 452 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 453 offset += hfp_hf_indicators_join(buffer+offset, sizeof(buffer)-offset); 454 455 buffer[offset] = 0; 456 457 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ")\r\n\r\nOK\r\n"); 458 buffer[offset] = 0; 459 return send_str_over_rfcomm(cid, buffer); 460 } 461 462 static int hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 463 char buffer[40]; 464 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer)); 465 466 buffer[offset] = 0; 467 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 468 buffer[offset] = 0; 469 return send_str_over_rfcomm(cid, buffer); 470 } 471 472 static int hfp_ag_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 473 char buffer[20]; 474 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 475 return send_str_over_rfcomm(cid, buffer); 476 } 477 478 static int hfp_ag_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 479 char buffer[40]; 480 if (strlen(op.name) == 0){ 481 sprintf(buffer, "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 482 } else { 483 sprintf(buffer, "\r\n%s:%d,%d,%s\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format, op.name); 484 } 485 return send_str_over_rfcomm(cid, buffer); 486 } 487 488 489 static int hfp_ag_cmd_suggest_codec(uint16_t cid, uint8_t codec){ 490 char buffer[30]; 491 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CONFIRM_COMMON_CODEC, codec); 492 return send_str_over_rfcomm(cid, buffer); 493 } 494 495 static int hfp_ag_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 496 char buffer[30]; 497 sprintf(buffer, "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 498 return send_str_over_rfcomm(cid, buffer); 499 } 500 501 static int hfp_ag_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 502 char buffer[30]; 503 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_SPEAKER_GAIN, gain); 504 return send_str_over_rfcomm(cid, buffer); 505 } 506 507 static int hfp_ag_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 508 char buffer[30]; 509 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_MICROPHONE_GAIN, gain); 510 return send_str_over_rfcomm(cid, buffer); 511 } 512 513 static int hfp_ag_set_response_and_hold(uint16_t cid, int state){ 514 char buffer[30]; 515 sprintf(buffer, "\r\n%s: %d\r\n", HFP_RESPONSE_AND_HOLD, state); 516 return send_str_over_rfcomm(cid, buffer); 517 } 518 519 520 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 521 int i,j; 522 uint8_t codec = HFP_CODEC_CVSD; 523 for (i = 0; i < hfp_codecs_nr; i++){ 524 for (j = 0; j < hfp_connection->remote_codecs_nr; j++){ 525 if (hfp_connection->remote_codecs[j] == hfp_codecs[i]){ 526 codec = hfp_connection->remote_codecs[j]; 527 continue; 528 } 529 } 530 } 531 return codec; 532 } 533 534 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 535 /* events ( == commands): 536 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 537 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 538 hf_trigger_codec_connection_setup == received BCC 539 ag_trigger_codec_connection_setup == received from AG to send BCS 540 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 541 */ 542 543 switch (hfp_connection->codecs_state){ 544 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 545 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 546 break; 547 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 548 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 549 break; 550 default: 551 break; 552 } 553 554 // printf(" -> State machine: CC\n"); 555 556 switch (hfp_connection->command){ 557 case HFP_CMD_AVAILABLE_CODECS: 558 //printf("HFP_CODECS_RECEIVED_LIST \n"); 559 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 560 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 561 hfp_ag_ok(hfp_connection->rfcomm_cid); 562 return 1; 563 } 564 565 switch (hfp_connection->codecs_state){ 566 case HFP_CODECS_AG_SENT_COMMON_CODEC: 567 case HFP_CODECS_EXCHANGED: 568 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 569 break; 570 default: 571 break; 572 } 573 hfp_ag_ok(hfp_connection->rfcomm_cid); 574 return 1; 575 576 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 577 //printf(" HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP \n"); 578 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 579 hfp_ag_ok(hfp_connection->rfcomm_cid); 580 return 1; 581 582 case HFP_CMD_AG_SEND_COMMON_CODEC: 583 //printf(" HFP_CMD_AG_SEND_COMMON_CODEC \n"); 584 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 585 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 586 hfp_ag_cmd_suggest_codec(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 587 return 1; 588 589 case HFP_CMD_HF_CONFIRMED_CODEC: 590 //printf("HFP_CMD_HF_CONFIRMED_CODEC \n"); 591 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 592 hfp_connection->codecs_state = HFP_CODECS_ERROR; 593 hfp_ag_error(hfp_connection->rfcomm_cid); 594 return 1; 595 } 596 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 597 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 598 hfp_emit_event(hfp_callback, HFP_SUBEVENT_CODECS_CONNECTION_COMPLETE, 0); 599 hfp_ag_ok(hfp_connection->rfcomm_cid); 600 return 1; 601 default: 602 break; 603 } 604 return 0; 605 } 606 607 static void hfp_init_link_settings(hfp_connection_t * hfp_connection){ 608 // determine highest possible link setting 609 hfp_connection->link_setting = HFP_LINK_SETTINGS_D1; 610 if (hci_remote_esco_supported(hfp_connection->acl_handle)){ 611 hfp_connection->link_setting = HFP_LINK_SETTINGS_S3; 612 if ((hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) 613 && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4))){ 614 hfp_connection->link_setting = HFP_LINK_SETTINGS_S4; 615 } 616 } 617 } 618 619 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 620 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 621 hfp_emit_event(hfp_callback, HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED, 0); 622 623 hfp_init_link_settings(hfp_connection); 624 625 // if active call exist, set per-hfp_connection state active, too (when audio is on) 626 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 627 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 628 } 629 // if AG is ringing, also start ringing on the HF 630 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS && 631 hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 632 hfp_ag_hf_start_ringing(hfp_connection); 633 } 634 } 635 636 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 637 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 638 int done = 0; 639 // printf(" -> State machine: SLC\n"); 640 switch(hfp_connection->command){ 641 case HFP_CMD_SUPPORTED_FEATURES: 642 switch(hfp_connection->state){ 643 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 644 case HFP_EXCHANGE_SUPPORTED_FEATURES: 645 if (has_codec_negotiation_feature(hfp_connection)){ 646 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 647 } else { 648 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 649 } 650 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 651 return 1; 652 default: 653 break; 654 } 655 break; 656 case HFP_CMD_AVAILABLE_CODECS: 657 done = codecs_exchange_state_machine(hfp_connection); 658 659 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 660 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 661 } 662 return done; 663 664 case HFP_CMD_RETRIEVE_AG_INDICATORS: 665 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 666 hfp_connection->command = HFP_CMD_NONE; // prevent reentrance 667 int next_segment = hfp_ag_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 668 if (next_segment < hfp_ag_indicators_cmd_generator_num_segments(hfp_connection)){ 669 // prepare sending of next segment 670 hfp_connection->send_ag_indicators_segment = next_segment; 671 hfp_connection->command = HFP_CMD_RETRIEVE_AG_INDICATORS; 672 } else { 673 // done, go to next state 674 hfp_connection->send_ag_indicators_segment = 0; 675 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 676 } 677 return 1; 678 } 679 break; 680 681 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 682 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 683 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 684 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 685 return 1; 686 687 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 688 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 689 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 690 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 691 } else if (has_hf_indicators_feature(hfp_connection)){ 692 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 693 } else { 694 hfp_ag_slc_established(hfp_connection); 695 } 696 hfp_ag_set_indicator_status_update_cmd(hfp_connection->rfcomm_cid, 1); 697 return 1; 698 699 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 700 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 701 if (has_hf_indicators_feature(hfp_connection)){ 702 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 703 } 704 hfp_ag_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 705 if (!has_hf_indicators_feature(hfp_connection)){ 706 hfp_ag_slc_established(hfp_connection); 707 } 708 return 1; 709 710 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 711 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 712 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 713 hfp_ag_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 714 return 1; 715 716 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 717 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 718 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 719 hfp_ag_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 720 return 1; 721 722 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 723 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 724 hfp_ag_slc_established(hfp_connection); 725 hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 726 return 1; 727 default: 728 break; 729 } 730 return done; 731 } 732 733 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 734 // if (hfp_connection->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 735 736 int done = codecs_exchange_state_machine(hfp_connection); 737 if (done) return done; 738 739 // printf(" -> State machine: SLC Queries\n"); 740 switch(hfp_connection->command){ 741 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 742 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 743 hfp_ag_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 744 return 1; 745 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 746 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 747 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 748 hfp_ag_ok(hfp_connection->rfcomm_cid); 749 hfp_ag_setup_audio_connection(hfp_connection); 750 } else { 751 hfp_ag_error(hfp_connection->rfcomm_cid); 752 } 753 return 1; 754 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 755 hfp_ag_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 756 return 1; 757 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 758 hfp_ag_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 759 return 1; 760 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 761 if (hfp_connection->network_operator.format != 0){ 762 hfp_ag_error(hfp_connection->rfcomm_cid); 763 } else { 764 hfp_ag_ok(hfp_connection->rfcomm_cid); 765 } 766 return 1; 767 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 768 hfp_ag_ok(hfp_connection->rfcomm_cid); 769 return 1; 770 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 771 if (hfp_connection->extended_audio_gateway_error){ 772 hfp_connection->extended_audio_gateway_error = 0; 773 hfp_ag_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 774 return 1; 775 } 776 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 777 hfp_ag_ok(hfp_connection->rfcomm_cid); 778 return 1; 779 default: 780 break; 781 } 782 return 0; 783 } 784 785 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 786 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 787 hfp_connection->state > HFP_W2_DISCONNECT_SCO) return 0; 788 789 790 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->release_audio_connection){ 791 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 792 hfp_connection->release_audio_connection = 0; 793 gap_disconnect(hfp_connection->sco_handle); 794 return 1; 795 } 796 797 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 798 799 // run codecs exchange 800 int done = codecs_exchange_state_machine(hfp_connection); 801 if (done) return done; 802 // printf(" -> State machine: Audio hfp_connection\n"); 803 804 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return done; 805 if (hfp_connection->establish_audio_connection){ 806 hfp_connection->state = HFP_W4_SCO_CONNECTED; 807 hfp_connection->establish_audio_connection = 0; 808 hfp_setup_synchronous_connection(hfp_connection->acl_handle, hfp_connection->link_setting); 809 return 1; 810 } 811 return 0; 812 } 813 814 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 815 btstack_linked_list_iterator_t it; 816 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 817 818 while (btstack_linked_list_iterator_has_next(&it)){ 819 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 820 if ( & hfp_connection->hfp_timeout == ts) { 821 return hfp_connection; 822 } 823 } 824 return NULL; 825 } 826 827 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 828 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 829 if (!hfp_connection) return; 830 831 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 832 hfp_connection->ag_ring = 1; 833 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 834 835 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 836 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 837 838 hfp_run_for_context(hfp_connection); 839 } 840 841 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 842 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 843 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 844 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 845 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 846 } 847 848 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 849 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 850 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 851 } 852 853 // 854 // transitition implementations for hfp_ag_call_state_machine 855 // 856 857 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 858 if (use_in_band_tone()){ 859 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 860 hfp_ag_establish_audio_connection(hfp_connection->remote_addr); 861 } else { 862 hfp_timeout_start(hfp_connection); 863 hfp_connection->ag_ring = 1; 864 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 865 hfp_connection->call_state = HFP_CALL_RINGING; 866 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 867 } 868 } 869 870 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 871 hfp_connection->ag_ring = 0; 872 hfp_connection->ag_send_clip = 0; 873 hfp_timeout_stop(hfp_connection); 874 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_STOP_RINGINIG); 875 } 876 877 static void hfp_ag_trigger_incoming_call(void){ 878 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 879 if (indicator_index < 0) return; 880 881 btstack_linked_list_iterator_t it; 882 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 883 while (btstack_linked_list_iterator_has_next(&it)){ 884 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 885 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 886 if (hfp_connection->call_state == HFP_CALL_IDLE){ 887 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 888 hfp_ag_hf_start_ringing(hfp_connection); 889 } 890 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 891 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 892 } 893 hfp_run_for_context(hfp_connection); 894 } 895 } 896 897 static void hfp_ag_transfer_callsetup_state(void){ 898 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 899 if (indicator_index < 0) return; 900 901 btstack_linked_list_iterator_t it; 902 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 903 while (btstack_linked_list_iterator_has_next(&it)){ 904 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 905 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 906 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 907 hfp_run_for_context(hfp_connection); 908 } 909 } 910 911 static void hfp_ag_transfer_call_state(void){ 912 int indicator_index = get_ag_indicator_index_for_name("call"); 913 if (indicator_index < 0) return; 914 915 btstack_linked_list_iterator_t it; 916 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 917 while (btstack_linked_list_iterator_has_next(&it)){ 918 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 919 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 920 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 921 hfp_run_for_context(hfp_connection); 922 } 923 } 924 925 static void hfp_ag_transfer_callheld_state(void){ 926 int indicator_index = get_ag_indicator_index_for_name("callheld"); 927 if (indicator_index < 0) return; 928 929 btstack_linked_list_iterator_t it; 930 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 931 while (btstack_linked_list_iterator_has_next(&it)){ 932 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 933 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 934 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 935 hfp_run_for_context(hfp_connection); 936 } 937 } 938 939 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 940 941 int call_indicator_index = get_ag_indicator_index_for_name("call"); 942 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 943 944 btstack_linked_list_iterator_t it; 945 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 946 while (btstack_linked_list_iterator_has_next(&it)){ 947 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 948 if (hfp_connection->call_state != HFP_CALL_RINGING && 949 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 950 951 hfp_ag_hf_stop_ringing(hfp_connection); 952 if (hfp_connection == source){ 953 hfp_connection->ok_pending = 1; 954 955 if (use_in_band_tone()){ 956 hfp_connection->call_state = HFP_CALL_ACTIVE; 957 } else { 958 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 959 hfp_ag_establish_audio_connection(hfp_connection->remote_addr); 960 } 961 962 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 963 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 964 965 } else { 966 hfp_connection->call_state = HFP_CALL_IDLE; 967 } 968 hfp_run_for_context(hfp_connection); 969 } 970 } 971 972 static void hfp_ag_ag_accept_call(void){ 973 974 int call_indicator_index = get_ag_indicator_index_for_name("call"); 975 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 976 977 btstack_linked_list_iterator_t it; 978 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 979 while (btstack_linked_list_iterator_has_next(&it)){ 980 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 981 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 982 983 hfp_ag_hf_stop_ringing(hfp_connection); 984 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 985 986 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 987 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 988 989 hfp_run_for_context(hfp_connection); 990 break; // only single 991 } 992 } 993 994 static void hfp_ag_trigger_reject_call(void){ 995 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 996 btstack_linked_list_iterator_t it; 997 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 998 while (btstack_linked_list_iterator_has_next(&it)){ 999 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1000 if (connection->call_state != HFP_CALL_RINGING && 1001 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1002 hfp_ag_hf_stop_ringing(connection); 1003 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1004 connection->call_state = HFP_CALL_IDLE; 1005 hfp_run_for_context(connection); 1006 } 1007 } 1008 1009 static void hfp_ag_trigger_terminate_call(void){ 1010 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1011 1012 btstack_linked_list_iterator_t it; 1013 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1014 while (btstack_linked_list_iterator_has_next(&it)){ 1015 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1016 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1017 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1018 hfp_connection->call_state = HFP_CALL_IDLE; 1019 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1020 hfp_connection->release_audio_connection = 1; 1021 hfp_run_for_context(hfp_connection); 1022 } 1023 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_TERMINATED); 1024 } 1025 1026 static void hfp_ag_set_callsetup_indicator(void){ 1027 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1028 if (!indicator){ 1029 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1030 }; 1031 indicator->status = hfp_gsm_callsetup_status(); 1032 } 1033 1034 static void hfp_ag_set_callheld_indicator(void){ 1035 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1036 if (!indicator){ 1037 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1038 }; 1039 indicator->status = hfp_gsm_callheld_status(); 1040 } 1041 1042 static void hfp_ag_set_call_indicator(void){ 1043 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1044 if (!indicator){ 1045 log_error("hfp_ag_set_call_state: call indicator is missing"); 1046 }; 1047 indicator->status = hfp_gsm_call_status(); 1048 } 1049 1050 static void hfp_ag_stop_ringing(void){ 1051 btstack_linked_list_iterator_t it; 1052 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1053 while (btstack_linked_list_iterator_has_next(&it)){ 1054 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1055 if (hfp_connection->call_state != HFP_CALL_RINGING && 1056 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1057 hfp_ag_hf_stop_ringing(hfp_connection); 1058 } 1059 } 1060 1061 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1062 btstack_linked_list_iterator_t it; 1063 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1064 while (btstack_linked_list_iterator_has_next(&it)){ 1065 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1066 if (hfp_connection->call_state == call_state) return hfp_connection; 1067 } 1068 return NULL; 1069 } 1070 1071 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1072 btstack_linked_list_iterator_t it; 1073 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1074 while (btstack_linked_list_iterator_has_next(&it)){ 1075 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1076 hfp_connection->send_response_and_hold_status = state + 1; 1077 } 1078 } 1079 1080 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1081 int indicator_index; 1082 switch (hfp_connection->call_state){ 1083 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1084 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1085 // we got event: audio hfp_connection established 1086 hfp_timeout_start(hfp_connection); 1087 hfp_connection->ag_ring = 1; 1088 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1089 hfp_connection->call_state = HFP_CALL_RINGING; 1090 hfp_connection->call_state = HFP_CALL_RINGING; 1091 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 1092 break; 1093 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1094 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1095 // we got event: audio hfp_connection established 1096 hfp_connection->call_state = HFP_CALL_ACTIVE; 1097 break; 1098 case HFP_CALL_W2_SEND_CALL_WAITING: 1099 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1100 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1101 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1102 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1103 break; 1104 default: 1105 break; 1106 } 1107 return 0; 1108 } 1109 // hfp_connection is used to identify originating HF 1110 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1111 int indicator_index; 1112 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1113 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1114 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1115 1116 //printf("hfp_ag_call_sm event %d \n", event); 1117 switch (event){ 1118 case HFP_AG_INCOMING_CALL: 1119 switch (hfp_gsm_call_status()){ 1120 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1121 switch (hfp_gsm_callsetup_status()){ 1122 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1123 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1124 hfp_ag_set_callsetup_indicator(); 1125 hfp_ag_trigger_incoming_call(); 1126 printf("AG rings\n"); 1127 break; 1128 default: 1129 break; 1130 } 1131 break; 1132 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1133 switch (hfp_gsm_callsetup_status()){ 1134 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1135 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1136 hfp_ag_set_callsetup_indicator(); 1137 hfp_ag_trigger_incoming_call(); 1138 printf("AG call waiting\n"); 1139 break; 1140 default: 1141 break; 1142 } 1143 break; 1144 } 1145 break; 1146 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1147 switch (hfp_gsm_call_status()){ 1148 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1149 switch (hfp_gsm_callsetup_status()){ 1150 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1151 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1152 hfp_ag_set_call_indicator(); 1153 hfp_ag_set_callsetup_indicator(); 1154 hfp_ag_ag_accept_call(); 1155 printf("AG answers call, accept call by GSM\n"); 1156 break; 1157 default: 1158 break; 1159 } 1160 break; 1161 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1162 switch (hfp_gsm_callsetup_status()){ 1163 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1164 printf("AG: current call is placed on hold, incoming call gets active\n"); 1165 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1166 hfp_ag_set_callsetup_indicator(); 1167 hfp_ag_set_callheld_indicator(); 1168 hfp_ag_transfer_callsetup_state(); 1169 hfp_ag_transfer_callheld_state(); 1170 break; 1171 default: 1172 break; 1173 } 1174 break; 1175 } 1176 break; 1177 1178 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1179 switch (hfp_gsm_call_status()){ 1180 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1181 switch (hfp_gsm_callheld_status()){ 1182 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1183 printf("AG: joining held call with active call\n"); 1184 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1185 hfp_ag_set_callheld_indicator(); 1186 hfp_ag_transfer_callheld_state(); 1187 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1188 break; 1189 default: 1190 break; 1191 } 1192 break; 1193 default: 1194 break; 1195 } 1196 break; 1197 1198 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1199 switch (hfp_gsm_call_status()){ 1200 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1201 switch (hfp_gsm_callsetup_status()){ 1202 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1203 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1204 hfp_ag_set_callsetup_indicator(); 1205 hfp_ag_set_call_indicator(); 1206 hfp_ag_hf_accept_call(hfp_connection); 1207 printf("HF answers call, accept call by GSM\n"); 1208 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_ANSWERED); 1209 break; 1210 default: 1211 break; 1212 } 1213 break; 1214 default: 1215 break; 1216 } 1217 break; 1218 1219 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1220 switch (hfp_gsm_call_status()){ 1221 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1222 switch (hfp_gsm_callsetup_status()){ 1223 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1224 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1225 hfp_ag_response_and_hold_active = 1; 1226 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1227 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1228 // as with regualr call 1229 hfp_ag_set_call_indicator(); 1230 hfp_ag_set_callsetup_indicator(); 1231 hfp_ag_ag_accept_call(); 1232 printf("AG response and hold - hold by AG\n"); 1233 break; 1234 default: 1235 break; 1236 } 1237 break; 1238 default: 1239 break; 1240 } 1241 break; 1242 1243 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1244 switch (hfp_gsm_call_status()){ 1245 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1246 switch (hfp_gsm_callsetup_status()){ 1247 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1248 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1249 hfp_ag_response_and_hold_active = 1; 1250 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1251 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1252 // as with regualr call 1253 hfp_ag_set_call_indicator(); 1254 hfp_ag_set_callsetup_indicator(); 1255 hfp_ag_hf_accept_call(hfp_connection); 1256 printf("AG response and hold - hold by HF\n"); 1257 break; 1258 default: 1259 break; 1260 } 1261 break; 1262 default: 1263 break; 1264 } 1265 break; 1266 1267 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1268 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1269 if (!hfp_ag_response_and_hold_active) break; 1270 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1271 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1272 hfp_ag_response_and_hold_active = 0; 1273 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1274 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1275 printf("Held Call accepted and active\n"); 1276 break; 1277 1278 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1279 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1280 if (!hfp_ag_response_and_hold_active) break; 1281 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1282 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1283 hfp_ag_response_and_hold_active = 0; 1284 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1285 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1286 // from terminate by ag 1287 hfp_ag_set_call_indicator(); 1288 hfp_ag_trigger_terminate_call(); 1289 break; 1290 1291 case HFP_AG_TERMINATE_CALL_BY_HF: 1292 switch (hfp_gsm_call_status()){ 1293 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1294 switch (hfp_gsm_callsetup_status()){ 1295 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1296 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1297 hfp_ag_set_callsetup_indicator(); 1298 hfp_ag_transfer_callsetup_state(); 1299 hfp_ag_trigger_reject_call(); 1300 printf("HF Rejected Incoming call, AG terminate call\n"); 1301 break; 1302 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1303 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1304 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1305 hfp_ag_set_callsetup_indicator(); 1306 hfp_ag_transfer_callsetup_state(); 1307 printf("AG terminate outgoing call process\n"); 1308 default: 1309 break; 1310 } 1311 break; 1312 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1313 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1314 hfp_ag_set_call_indicator(); 1315 hfp_ag_transfer_call_state(); 1316 hfp_connection->call_state = HFP_CALL_IDLE; 1317 printf("AG terminate call\n"); 1318 break; 1319 } 1320 break; 1321 1322 case HFP_AG_TERMINATE_CALL_BY_AG: 1323 switch (hfp_gsm_call_status()){ 1324 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1325 switch (hfp_gsm_callsetup_status()){ 1326 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1327 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1328 hfp_ag_set_callsetup_indicator(); 1329 hfp_ag_trigger_reject_call(); 1330 printf("AG Rejected Incoming call, AG terminate call\n"); 1331 break; 1332 default: 1333 break; 1334 } 1335 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1336 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1337 hfp_ag_set_callsetup_indicator(); 1338 hfp_ag_set_call_indicator(); 1339 hfp_ag_trigger_terminate_call(); 1340 printf("AG terminate call\n"); 1341 break; 1342 default: 1343 break; 1344 } 1345 break; 1346 case HFP_AG_CALL_DROPPED: 1347 switch (hfp_gsm_call_status()){ 1348 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1349 switch (hfp_gsm_callsetup_status()){ 1350 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1351 hfp_ag_stop_ringing(); 1352 printf("Incoming call interrupted\n"); 1353 break; 1354 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1355 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1356 printf("Outgoing call interrupted\n"); 1357 printf("AG notify call dropped\n"); 1358 break; 1359 default: 1360 break; 1361 } 1362 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1363 hfp_ag_set_callsetup_indicator(); 1364 hfp_ag_transfer_callsetup_state(); 1365 break; 1366 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1367 if (hfp_ag_response_and_hold_active) { 1368 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1369 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1370 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1371 } 1372 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1373 hfp_ag_set_callsetup_indicator(); 1374 hfp_ag_set_call_indicator(); 1375 hfp_ag_trigger_terminate_call(); 1376 printf("AG notify call dropped\n"); 1377 break; 1378 default: 1379 break; 1380 } 1381 break; 1382 1383 case HFP_AG_OUTGOING_CALL_INITIATED: 1384 // directly reject call if number of free slots is exceeded 1385 if (!hfp_gsm_call_possible()){ 1386 hfp_connection->send_error = 1; 1387 hfp_run_for_context(hfp_connection); 1388 break; 1389 } 1390 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1391 1392 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1393 1394 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1395 break; 1396 1397 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1398 // directly reject call if number of free slots is exceeded 1399 if (!hfp_gsm_call_possible()){ 1400 hfp_connection->send_error = 1; 1401 hfp_run_for_context(hfp_connection); 1402 break; 1403 } 1404 1405 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1406 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1407 1408 printf("\nRedial last number"); 1409 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1410 1411 if (strlen(last_dialed_number) > 0){ 1412 printf("\nLast number exists: accept call"); 1413 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1414 } else { 1415 printf("\nLast number missing: reject call"); 1416 hfp_ag_outgoing_call_rejected(); 1417 } 1418 break; 1419 } 1420 case HFP_AG_OUTGOING_CALL_REJECTED: 1421 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1422 if (!hfp_connection){ 1423 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1424 break; 1425 } 1426 1427 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1428 hfp_connection->call_state = HFP_CALL_IDLE; 1429 hfp_connection->send_error = 1; 1430 hfp_run_for_context(hfp_connection); 1431 break; 1432 1433 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1434 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1435 if (!hfp_connection){ 1436 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1437 break; 1438 } 1439 1440 hfp_connection->ok_pending = 1; 1441 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1442 1443 // trigger callsetup to be 1444 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1445 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1446 1447 hfp_ag_set_callsetup_indicator(); 1448 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1449 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1450 1451 // put current call on hold if active 1452 if (put_call_on_hold){ 1453 printf("AG putting current call on hold for new outgoing call\n"); 1454 hfp_ag_set_callheld_indicator(); 1455 indicator_index = get_ag_indicator_index_for_name("callheld"); 1456 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1457 } 1458 1459 // start audio if needed 1460 hfp_ag_establish_audio_connection(hfp_connection->remote_addr); 1461 break; 1462 } 1463 case HFP_AG_OUTGOING_CALL_RINGING: 1464 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1465 if (!hfp_connection){ 1466 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1467 break; 1468 } 1469 1470 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1471 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1472 hfp_ag_set_callsetup_indicator(); 1473 hfp_ag_transfer_callsetup_state(); 1474 break; 1475 1476 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1477 // get outgoing call 1478 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1479 if (!hfp_connection){ 1480 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1481 } 1482 if (!hfp_connection){ 1483 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1484 break; 1485 } 1486 1487 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1488 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1489 hfp_connection->call_state = HFP_CALL_ACTIVE; 1490 hfp_ag_set_callsetup_indicator(); 1491 hfp_ag_set_call_indicator(); 1492 hfp_ag_transfer_call_state(); 1493 hfp_ag_transfer_callsetup_state(); 1494 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1495 hfp_ag_set_callheld_indicator(); 1496 hfp_ag_transfer_callheld_state(); 1497 } 1498 break; 1499 } 1500 1501 case HFP_AG_CALL_HOLD_USER_BUSY: 1502 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1503 hfp_ag_set_callsetup_indicator(); 1504 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1505 hfp_connection->call_state = HFP_CALL_ACTIVE; 1506 printf("AG: Call Waiting, User Busy\n"); 1507 break; 1508 1509 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1510 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1511 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1512 1513 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1514 if (call_held || call_setup_in_progress){ 1515 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1516 1517 } 1518 1519 if (call_setup_in_progress){ 1520 printf("AG: Call Dropped, Accept new call\n"); 1521 hfp_ag_set_callsetup_indicator(); 1522 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1523 } else { 1524 printf("AG: Call Dropped, Resume held call\n"); 1525 } 1526 if (call_held){ 1527 hfp_ag_set_callheld_indicator(); 1528 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1529 } 1530 1531 hfp_connection->call_state = HFP_CALL_ACTIVE; 1532 break; 1533 } 1534 1535 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1536 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1537 // only update if callsetup changed 1538 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1539 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1540 1541 if (call_setup_in_progress){ 1542 printf("AG: Call on Hold, Accept new call\n"); 1543 hfp_ag_set_callsetup_indicator(); 1544 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1545 } else { 1546 printf("AG: Swap calls\n"); 1547 } 1548 1549 hfp_ag_set_callheld_indicator(); 1550 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1551 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1552 hfp_connection->call_state = HFP_CALL_ACTIVE; 1553 break; 1554 } 1555 1556 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1557 // Adds a held call to the conversation. 1558 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1559 printf("AG: Join 3-way-call\n"); 1560 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1561 hfp_ag_set_callheld_indicator(); 1562 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1563 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1564 } 1565 hfp_connection->call_state = HFP_CALL_ACTIVE; 1566 break; 1567 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1568 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1569 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1570 printf("AG: Transfer call -> Connect two calls and disconnect\n"); 1571 hfp_ag_set_call_indicator(); 1572 hfp_ag_set_callheld_indicator(); 1573 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1574 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1575 hfp_connection->call_state = HFP_CALL_IDLE; 1576 break; 1577 1578 default: 1579 break; 1580 } 1581 1582 1583 } 1584 1585 1586 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1587 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1588 if (!active_call) return; 1589 1590 int idx = active_call->index; 1591 hfp_enhanced_call_dir_t dir = active_call->direction; 1592 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1593 hfp_enhanced_call_mode_t mode = active_call->mode; 1594 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1595 uint8_t type = active_call->clip_type; 1596 char * number = active_call->clip_number; 1597 1598 char buffer[100]; 1599 // TODO: check length of a buffer, to fit the MTU 1600 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1601 if (number){ 1602 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ", \"%s\",%u", number, type); 1603 } 1604 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1605 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, 1606 mode, mpty, type, number); 1607 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1608 } 1609 1610 static void hfp_run_for_context(hfp_connection_t *hfp_connection){ 1611 if (!hfp_connection) return; 1612 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) return; 1613 1614 if (hfp_connection->send_status_of_current_calls){ 1615 hfp_connection->ok_pending = 0; 1616 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1617 hfp_connection->next_call_index++; 1618 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1619 } else { 1620 hfp_connection->next_call_index = 0; 1621 hfp_connection->ok_pending = 1; 1622 hfp_connection->send_status_of_current_calls = 0; 1623 } 1624 return; 1625 } 1626 1627 if (hfp_connection->ag_notify_incoming_call_waiting){ 1628 hfp_connection->ag_notify_incoming_call_waiting = 0; 1629 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1630 return; 1631 } 1632 1633 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1634 hfp_connection->ok_pending = 0; 1635 hfp_connection->send_error = 0; 1636 hfp_connection->command = HFP_CMD_NONE; 1637 hfp_ag_error(hfp_connection->rfcomm_cid); 1638 return; 1639 } 1640 1641 if (hfp_connection->send_error){ 1642 hfp_connection->send_error = 0; 1643 hfp_connection->command = HFP_CMD_NONE; 1644 hfp_ag_error(hfp_connection->rfcomm_cid); 1645 return; 1646 } 1647 1648 // note: before update AG indicators and ok_pending 1649 if (hfp_connection->send_response_and_hold_status){ 1650 int status = hfp_connection->send_response_and_hold_status - 1; 1651 hfp_connection->send_response_and_hold_status = 0; 1652 hfp_ag_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1653 return; 1654 } 1655 1656 if (hfp_connection->ok_pending){ 1657 hfp_connection->ok_pending = 0; 1658 hfp_connection->command = HFP_CMD_NONE; 1659 hfp_ag_ok(hfp_connection->rfcomm_cid); 1660 return; 1661 } 1662 1663 // update AG indicators 1664 if (hfp_connection->ag_indicators_status_update_bitmap){ 1665 int i; 1666 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1667 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1668 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1669 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1670 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1671 break; 1672 } 1673 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1674 return; 1675 } 1676 } 1677 } 1678 1679 if (hfp_connection->ag_ring){ 1680 hfp_connection->ag_ring = 0; 1681 hfp_connection->command = HFP_CMD_NONE; 1682 hfp_ag_ring(hfp_connection->rfcomm_cid); 1683 return; 1684 } 1685 1686 if (hfp_connection->ag_send_clip){ 1687 hfp_connection->ag_send_clip = 0; 1688 hfp_connection->command = HFP_CMD_NONE; 1689 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1690 return; 1691 } 1692 1693 if (hfp_connection->send_phone_number_for_voice_tag){ 1694 hfp_connection->send_phone_number_for_voice_tag = 0; 1695 hfp_connection->command = HFP_CMD_NONE; 1696 hfp_connection->ok_pending = 1; 1697 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1698 return; 1699 } 1700 1701 if (hfp_connection->send_subscriber_number){ 1702 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1703 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1704 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1705 } else { 1706 hfp_connection->send_subscriber_number = 0; 1707 hfp_connection->next_subscriber_number_to_send = 0; 1708 hfp_ag_ok(hfp_connection->rfcomm_cid); 1709 } 1710 hfp_connection->command = HFP_CMD_NONE; 1711 } 1712 1713 if (hfp_connection->send_microphone_gain){ 1714 hfp_connection->send_microphone_gain = 0; 1715 hfp_connection->command = HFP_CMD_NONE; 1716 hfp_ag_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1717 return; 1718 } 1719 1720 if (hfp_connection->send_speaker_gain){ 1721 hfp_connection->send_speaker_gain = 0; 1722 hfp_connection->command = HFP_CMD_NONE; 1723 hfp_ag_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1724 return; 1725 } 1726 1727 if (hfp_connection->send_ag_status_indicators){ 1728 hfp_connection->send_ag_status_indicators = 0; 1729 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1730 return; 1731 } 1732 1733 int done = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1734 if (!done){ 1735 done = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1736 } 1737 1738 if (!done){ 1739 done = call_setup_state_machine(hfp_connection); 1740 } 1741 1742 if (!done){ 1743 done = hfp_ag_run_for_audio_connection(hfp_connection); 1744 } 1745 1746 if (hfp_connection->command == HFP_CMD_NONE && !done){ 1747 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1748 switch(hfp_connection->state){ 1749 case HFP_W2_DISCONNECT_RFCOMM: 1750 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1751 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1752 break; 1753 default: 1754 break; 1755 } 1756 } 1757 if (done){ 1758 hfp_connection->command = HFP_CMD_NONE; 1759 } 1760 } 1761 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1762 int i; 1763 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1764 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1765 if (indicator->uuid == number){ 1766 return indicator; 1767 } 1768 } 1769 return NULL; 1770 } 1771 1772 static void hfp_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1773 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1774 if (!hfp_connection) return; 1775 1776 char last_char = packet[size-1]; 1777 packet[size-1] = 0; 1778 log_info("HFP_RX %s", packet); 1779 packet[size-1] = last_char; 1780 1781 int pos; 1782 for (pos = 0; pos < size ; pos++){ 1783 hfp_parse(hfp_connection, packet[pos], 0); 1784 } 1785 hfp_generic_status_indicator_t * indicator; 1786 int value; 1787 switch(hfp_connection->command){ 1788 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1789 if (hfp_ag_response_and_hold_active){ 1790 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1791 } 1792 hfp_connection->ok_pending = 1; 1793 break; 1794 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1795 value = atoi((char *)&hfp_connection->line_buffer[0]); 1796 printf("HF Response and Hold: %u\n", value); 1797 switch(value){ 1798 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1799 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1800 break; 1801 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1802 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1803 break; 1804 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1805 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1806 break; 1807 default: 1808 break; 1809 } 1810 hfp_connection->ok_pending = 1; 1811 break; 1812 case HFP_CMD_HF_INDICATOR_STATUS: 1813 hfp_connection->command = HFP_CMD_NONE; 1814 // find indicator by assigned number 1815 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1816 if (!indicator){ 1817 hfp_connection->send_error = 1; 1818 break; 1819 } 1820 value = atoi((char *)&hfp_connection->line_buffer[0]); 1821 switch (indicator->uuid){ 1822 case 1: // enhanced security 1823 if (value > 1) { 1824 hfp_connection->send_error = 1; 1825 return; 1826 } 1827 printf("HF Indicator 'enhanced security' set to %u\n", value); 1828 break; 1829 case 2: // battery level 1830 if (value > 100){ 1831 hfp_connection->send_error = 1; 1832 return; 1833 } 1834 printf("HF Indicator 'battery' set to %u\n", value); 1835 break; 1836 default: 1837 printf("HF Indicator unknown set to %u\n", value); 1838 break; 1839 } 1840 hfp_connection->ok_pending = 1; 1841 break; 1842 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1843 // expected by SLC state machine 1844 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1845 hfp_connection->send_ag_indicators_segment = 0; 1846 hfp_connection->send_ag_status_indicators = 1; 1847 break; 1848 case HFP_CMD_LIST_CURRENT_CALLS: 1849 hfp_connection->command = HFP_CMD_NONE; 1850 hfp_connection->next_call_index = 0; 1851 hfp_connection->send_status_of_current_calls = 1; 1852 break; 1853 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1854 if (subscriber_numbers_count == 0){ 1855 hfp_ag_ok(hfp_connection->rfcomm_cid); 1856 break; 1857 } 1858 hfp_connection->next_subscriber_number_to_send = 0; 1859 hfp_connection->send_subscriber_number = 1; 1860 break; 1861 case HFP_CMD_TRANSMIT_DTMF_CODES: 1862 hfp_connection->command = HFP_CMD_NONE; 1863 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &hfp_connection->line_buffer[0]); 1864 break; 1865 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1866 hfp_connection->command = HFP_CMD_NONE; 1867 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1868 break; 1869 case HFP_CMD_TURN_OFF_EC_AND_NR: 1870 hfp_connection->command = HFP_CMD_NONE; 1871 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1872 hfp_connection->ok_pending = 1; 1873 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1874 printf("AG: EC/NR = %u\n", hfp_connection->ag_echo_and_noise_reduction); 1875 } else { 1876 hfp_connection->send_error = 1; 1877 } 1878 break; 1879 case HFP_CMD_CALL_ANSWERED: 1880 hfp_connection->command = HFP_CMD_NONE; 1881 printf("HFP: ATA\n"); 1882 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1883 break; 1884 case HFP_CMD_HANG_UP_CALL: 1885 hfp_connection->command = HFP_CMD_NONE; 1886 hfp_connection->ok_pending = 1; 1887 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1888 break; 1889 case HFP_CMD_CALL_HOLD: { 1890 // TODO: fully implement this 1891 log_error("HFP: unhandled call hold type %c", hfp_connection->line_buffer[0]); 1892 hfp_connection->command = HFP_CMD_NONE; 1893 hfp_connection->ok_pending = 1; 1894 hfp_connection->call_index = 0; 1895 1896 if (hfp_connection->line_buffer[1] != '\0'){ 1897 hfp_connection->call_index = atoi((char *)&hfp_connection->line_buffer[1]); 1898 } 1899 1900 switch (hfp_connection->line_buffer[0]){ 1901 case '0': 1902 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1903 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1904 break; 1905 case '1': 1906 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1907 // Where both a held and a waiting call exist, the above procedures shall apply to the 1908 // waiting call (i.e., not to the held call) in conflicting situation. 1909 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1910 break; 1911 case '2': 1912 // Places all active calls (if any exist) on hold 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_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1916 break; 1917 case '3': 1918 // Adds a held call to the conversation. 1919 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1920 break; 1921 case '4': 1922 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1923 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1924 break; 1925 default: 1926 break; 1927 } 1928 break; 1929 } 1930 case HFP_CMD_CALL_PHONE_NUMBER: 1931 hfp_connection->command = HFP_CMD_NONE; 1932 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1933 break; 1934 case HFP_CMD_REDIAL_LAST_NUMBER: 1935 hfp_connection->command = HFP_CMD_NONE; 1936 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1937 break; 1938 case HFP_CMD_ENABLE_CLIP: 1939 hfp_connection->command = HFP_CMD_NONE; 1940 hfp_connection->clip_enabled = hfp_connection->line_buffer[8] != '0'; 1941 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1942 hfp_connection->ok_pending = 1; 1943 break; 1944 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1945 hfp_connection->command = HFP_CMD_NONE; 1946 hfp_connection->call_waiting_notification_enabled = hfp_connection->line_buffer[8] != '0'; 1947 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1948 hfp_connection->ok_pending = 1; 1949 break; 1950 case HFP_CMD_SET_SPEAKER_GAIN: 1951 hfp_connection->command = HFP_CMD_NONE; 1952 hfp_connection->ok_pending = 1; 1953 printf("HF speaker gain = %u\n", hfp_connection->speaker_gain); 1954 break; 1955 case HFP_CMD_SET_MICROPHONE_GAIN: 1956 hfp_connection->command = HFP_CMD_NONE; 1957 hfp_connection->ok_pending = 1; 1958 printf("HF microphone gain = %u\n", hfp_connection->microphone_gain); 1959 break; 1960 default: 1961 break; 1962 } 1963 } 1964 1965 static void hfp_run(void){ 1966 btstack_linked_list_iterator_t it; 1967 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1968 while (btstack_linked_list_iterator_has_next(&it)){ 1969 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1970 hfp_run_for_context(hfp_connection); 1971 } 1972 } 1973 1974 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1975 switch (packet_type){ 1976 case RFCOMM_DATA_PACKET: 1977 hfp_handle_rfcomm_data(packet_type, channel, packet, size); 1978 break; 1979 case HCI_EVENT_PACKET: 1980 hfp_handle_hci_event(packet_type, packet, size); 1981 break; 1982 default: 1983 break; 1984 } 1985 1986 hfp_run(); 1987 } 1988 1989 1990 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 1991 if (codecs_nr > HFP_MAX_NUM_CODECS){ 1992 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 1993 return; 1994 } 1995 int i; 1996 hfp_codecs_nr = codecs_nr; 1997 for (i=0; i < codecs_nr; i++){ 1998 hfp_codecs[i] = codecs[i]; 1999 } 2000 } 2001 2002 void hfp_ag_init_supported_features(uint32_t supported_features){ 2003 hfp_supported_features = supported_features; 2004 } 2005 2006 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2007 hfp_ag_indicators_nr = ag_indicators_nr; 2008 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2009 } 2010 2011 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2012 if (hf_indicators_nr > HFP_MAX_NUM_HF_INDICATORS) return; 2013 hfp_generic_status_indicators_nr = hf_indicators_nr; 2014 memcpy(hfp_generic_status_indicators, hf_indicators, hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2015 } 2016 2017 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2018 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2019 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2020 } 2021 2022 2023 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2024 // register for HCI events 2025 hci_event_callback_registration.callback = &packet_handler; 2026 hci_add_event_handler(&hci_event_callback_registration); 2027 2028 l2cap_init(); 2029 2030 rfcomm_register_service(packet_handler, rfcomm_channel_nr, 0xffff); 2031 2032 hfp_ag_response_and_hold_active = 0; 2033 subscriber_numbers = NULL; 2034 subscriber_numbers_count = 0; 2035 2036 hfp_gsm_init(); 2037 } 2038 2039 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2040 hfp_establish_service_level_connection(bd_addr, SDP_Handsfree); 2041 } 2042 2043 void hfp_ag_release_service_level_connection(bd_addr_t bd_addr){ 2044 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2045 hfp_release_service_level_connection(hfp_connection); 2046 hfp_run_for_context(hfp_connection); 2047 } 2048 2049 void hfp_ag_report_extended_audio_gateway_error_result_code(bd_addr_t bd_addr, hfp_cme_error_t error){ 2050 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2051 if (!hfp_connection){ 2052 log_error("HFP HF: hfp_connection doesn't exist."); 2053 return; 2054 } 2055 hfp_connection->extended_audio_gateway_error = 0; 2056 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2057 return; 2058 } 2059 hfp_connection->extended_audio_gateway_error = error; 2060 hfp_run_for_context(hfp_connection); 2061 } 2062 2063 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2064 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2065 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2066 2067 hfp_connection->establish_audio_connection = 1; 2068 2069 if (!has_codec_negotiation_feature(hfp_connection)){ 2070 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using defaults"); 2071 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2072 } 2073 2074 switch (hfp_connection->codecs_state){ 2075 case HFP_CODECS_IDLE: 2076 case HFP_CODECS_RECEIVED_LIST: 2077 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2078 case HFP_CODECS_ERROR: 2079 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2080 break; 2081 default: 2082 break; 2083 } 2084 } 2085 2086 void hfp_ag_establish_audio_connection(bd_addr_t bd_addr){ 2087 hfp_ag_establish_service_level_connection(bd_addr); 2088 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2089 2090 hfp_connection->establish_audio_connection = 0; 2091 hfp_ag_setup_audio_connection(hfp_connection); 2092 hfp_run_for_context(hfp_connection); 2093 } 2094 2095 void hfp_ag_release_audio_connection(bd_addr_t bd_addr){ 2096 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2097 hfp_release_audio_connection(hfp_connection); 2098 hfp_run_for_context(hfp_connection); 2099 } 2100 2101 /** 2102 * @brief Enable in-band ring tone 2103 */ 2104 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2105 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2106 return; 2107 } 2108 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2109 2110 btstack_linked_list_iterator_t it; 2111 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2112 while (btstack_linked_list_iterator_has_next(&it)){ 2113 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2114 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2115 hfp_run_for_context(hfp_connection); 2116 } 2117 } 2118 2119 /** 2120 * @brief Called from GSM 2121 */ 2122 void hfp_ag_incoming_call(void){ 2123 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2124 } 2125 2126 /** 2127 * @brief number is stored. 2128 */ 2129 void hfp_ag_set_clip(uint8_t type, const char * number){ 2130 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2131 } 2132 2133 void hfp_ag_call_dropped(void){ 2134 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2135 } 2136 2137 // call from AG UI 2138 void hfp_ag_answer_incoming_call(void){ 2139 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2140 } 2141 2142 void hfp_ag_join_held_call(void){ 2143 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2144 } 2145 2146 void hfp_ag_terminate_call(void){ 2147 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2148 } 2149 2150 void hfp_ag_outgoing_call_ringing(void){ 2151 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2152 } 2153 2154 void hfp_ag_outgoing_call_established(void){ 2155 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2156 } 2157 2158 void hfp_ag_outgoing_call_rejected(void){ 2159 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2160 } 2161 2162 void hfp_ag_outgoing_call_accepted(void){ 2163 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2164 } 2165 2166 void hfp_ag_hold_incoming_call(void){ 2167 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2168 } 2169 2170 void hfp_ag_accept_held_incoming_call(void) { 2171 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2172 } 2173 2174 void hfp_ag_reject_held_incoming_call(void){ 2175 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2176 } 2177 2178 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2179 int indicator_index = get_ag_indicator_index_for_name(name); 2180 if (indicator_index < 0) return; 2181 hfp_ag_indicators[indicator_index].status = value; 2182 2183 2184 btstack_linked_list_iterator_t it; 2185 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2186 while (btstack_linked_list_iterator_has_next(&it)){ 2187 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2188 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2189 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2190 continue; 2191 } 2192 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2193 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2194 hfp_run_for_context(hfp_connection); 2195 } 2196 } 2197 2198 void hfp_ag_set_registration_status(int status){ 2199 hfp_ag_set_ag_indicator("service", status); 2200 } 2201 2202 void hfp_ag_set_signal_strength(int strength){ 2203 hfp_ag_set_ag_indicator("signal", strength); 2204 } 2205 2206 void hfp_ag_set_roaming_status(int status){ 2207 hfp_ag_set_ag_indicator("roam", status); 2208 } 2209 2210 void hfp_ag_set_battery_level(int level){ 2211 hfp_ag_set_ag_indicator("battchg", level); 2212 } 2213 2214 void hfp_ag_activate_voice_recognition(bd_addr_t bd_addr, int activate){ 2215 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2216 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2217 2218 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2219 printf("AG cannot acivate voice recognition - not supported by HF\n"); 2220 return; 2221 } 2222 2223 if (activate){ 2224 hfp_ag_establish_audio_connection(bd_addr); 2225 } 2226 2227 hfp_connection->ag_activate_voice_recognition = activate; 2228 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2229 hfp_run_for_context(hfp_connection); 2230 } 2231 2232 void hfp_ag_set_microphone_gain(bd_addr_t bd_addr, int gain){ 2233 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2234 if (hfp_connection->microphone_gain != gain){ 2235 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2236 hfp_connection->microphone_gain = gain; 2237 hfp_connection->send_microphone_gain = 1; 2238 } 2239 hfp_run_for_context(hfp_connection); 2240 } 2241 2242 void hfp_ag_set_speaker_gain(bd_addr_t bd_addr, int gain){ 2243 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2244 if (hfp_connection->speaker_gain != gain){ 2245 hfp_connection->speaker_gain = gain; 2246 hfp_connection->send_speaker_gain = 1; 2247 } 2248 hfp_run_for_context(hfp_connection); 2249 } 2250 2251 void hfp_ag_send_phone_number_for_voice_tag(bd_addr_t bd_addr, const char * number){ 2252 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2253 hfp_ag_set_clip(0, number); 2254 hfp_connection->send_phone_number_for_voice_tag = 1; 2255 } 2256 2257 void hfp_ag_reject_phone_number_for_voice_tag(bd_addr_t bd_addr){ 2258 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2259 hfp_connection->send_error = 1; 2260 } 2261 2262 void hfp_ag_send_dtmf_code_done(bd_addr_t bd_addr){ 2263 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2264 hfp_connection->ok_pending = 1; 2265 } 2266 2267 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2268 subscriber_numbers = numbers; 2269 subscriber_numbers_count = numbers_count; 2270 } 2271 2272 void hfp_ag_clear_last_dialed_number(void){ 2273 hfp_gsm_clear_last_dialed_number(); 2274 } 2275 2276 void hfp_ag_notify_incoming_call_waiting(bd_addr_t bd_addr){ 2277 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_bd_addr(bd_addr); 2278 if (!hfp_connection->call_waiting_notification_enabled) return; 2279 2280 hfp_connection->ag_notify_incoming_call_waiting = 1; 2281 hfp_run_for_context(hfp_connection); 2282 } 2283 2284