1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 // ***************************************************************************** 39 // 40 // HFP Audio Gateway (AG) unit 41 // 42 // ***************************************************************************** 43 44 #include "btstack_config.h" 45 46 #include <stdint.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 51 #include "hci_cmd.h" 52 #include "btstack_run_loop.h" 53 54 #include "hci.h" 55 #include "btstack_memory.h" 56 #include "hci_dump.h" 57 #include "l2cap.h" 58 #include "btstack_debug.h" 59 #include "btstack_event.h" 60 #include "classic/core.h" 61 #include "classic/hfp.h" 62 #include "classic/hfp_ag.h" 63 #include "classic/hfp_gsm_model.h" 64 #include "classic/sdp_client_rfcomm.h" 65 #include "classic/sdp_server.h" 66 #include "classic/sdp_util.h" 67 68 // private prototypes 69 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 70 static void hfp_run_for_context(hfp_connection_t *context); 71 static void hfp_ag_setup_audio_connection(hfp_connection_t * connection); 72 static void hfp_ag_hf_start_ringing(hfp_connection_t * context); 73 74 // public prototypes 75 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 76 int get_hfp_generic_status_indicators_nr(void); 77 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 78 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 79 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 80 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 81 82 // gobals 83 static const char default_hfp_ag_service_name[] = "Voice gateway"; 84 85 static uint16_t hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 86 87 static uint8_t hfp_codecs_nr = 0; 88 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 89 90 static int hfp_ag_indicators_nr = 0; 91 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_AG_INDICATORS]; 92 93 static int hfp_generic_status_indicators_nr = 0; 94 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_HF_INDICATORS]; 95 96 static int hfp_ag_call_hold_services_nr = 0; 97 static char *hfp_ag_call_hold_services[6]; 98 static btstack_packet_handler_t hfp_callback; 99 100 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 101 static int hfp_ag_response_and_hold_active = 0; 102 103 // Subcriber information entries 104 static hfp_phone_number_t * subscriber_numbers = NULL; 105 static int subscriber_numbers_count = 0; 106 107 static btstack_packet_callback_registration_t hci_event_callback_registration; 108 static void hfp_run_for_context(hfp_connection_t *hfp_connection); 109 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 110 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection); 111 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection); 112 113 114 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 115 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 116 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 117 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 118 } 119 return hfp_connection->ag_indicators_nr; 120 } 121 122 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 123 // TODO: save only value, and value changed in the hfp_connection? 124 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 125 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 126 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 127 } 128 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 129 } 130 131 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 132 int i; 133 for (i = 0; i < hfp_ag_indicators_nr; i++){ 134 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 135 return &hfp_ag_indicators[i]; 136 } 137 } 138 return NULL; 139 } 140 141 static int get_ag_indicator_index_for_name(const char * name){ 142 int i; 143 for (i = 0; i < hfp_ag_indicators_nr; i++){ 144 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 145 return i; 146 } 147 } 148 return -1; 149 } 150 151 152 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 153 if (callback == NULL){ 154 log_error("hfp_ag_register_packet_handler called with NULL callback"); 155 return; 156 } 157 hfp_callback = callback; 158 hfp_set_callback(callback); 159 } 160 161 static int use_in_band_tone(void){ 162 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 163 } 164 165 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 166 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 167 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 168 return hf && ag; 169 } 170 171 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 172 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 173 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 174 return hf && ag; 175 } 176 177 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 178 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 179 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 180 return hf && ag; 181 } 182 183 void hfp_ag_create_sdp_record(uint8_t * service, uint32_t service_record_handle, int rfcomm_channel_nr, const char * name, uint8_t ability_to_reject_call, uint16_t supported_features, int wide_band_speech){ 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 // Construct SupportedFeatures for SDP bitmap: 197 // 198 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 199 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 200 // 201 uint16_t sdp_features = supported_features &0x1f; 202 if (supported_features & wide_band_speech){ 203 sdp_features |= 1 << 5; // Wide band speech bit 204 } 205 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 206 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 207 } 208 209 static int hfp_ag_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 210 char buffer[20]; 211 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 212 return send_str_over_rfcomm(cid, buffer); 213 } 214 215 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 216 char buffer[40]; 217 sprintf(buffer, "\r\n%s:%d\r\n\r\nOK\r\n", HFP_SUPPORTED_FEATURES, hfp_supported_features); 218 return send_str_over_rfcomm(cid, buffer); 219 } 220 221 static int hfp_ag_ok(uint16_t cid){ 222 char buffer[10]; 223 sprintf(buffer, "\r\nOK\r\n"); 224 return send_str_over_rfcomm(cid, buffer); 225 } 226 227 static int hfp_ag_ring(uint16_t cid){ 228 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 229 } 230 231 static int hfp_ag_send_clip(uint16_t cid){ 232 char buffer[50]; 233 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 234 return send_str_over_rfcomm(cid, buffer); 235 } 236 237 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 238 char buffer[50]; 239 sprintf(buffer, "\r\n%s: ,\"%s\",%u, , \r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 240 return send_str_over_rfcomm(cid, buffer); 241 } 242 243 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 244 char buffer[50]; 245 sprintf(buffer, "\r\n%s: %s\r\n", HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 246 return send_str_over_rfcomm(cid, buffer); 247 } 248 249 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 250 char buffer[50]; 251 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 252 return send_str_over_rfcomm(cid, buffer); 253 } 254 255 static int hfp_ag_error(uint16_t cid){ 256 char buffer[10]; 257 sprintf(buffer, "\r\nERROR\r\n"); 258 return send_str_over_rfcomm(cid, buffer); 259 } 260 261 static int hfp_ag_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 262 char buffer[20]; 263 sprintf(buffer, "\r\n%s=%d\r\n", HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 264 return send_str_over_rfcomm(cid, buffer); 265 } 266 267 // fast & small implementation for fixed int size 268 static int string_len_for_uint32(uint32_t i){ 269 if (i < 10) return 1; 270 if (i < 100) return 2; 271 if (i < 1000) return 3; 272 if (i < 10000) return 4; 273 if (i < 100000) return 5; 274 if (i < 1000000) return 6; 275 if (i < 10000000) return 7; 276 if (i < 100000000) return 8; 277 if (i < 1000000000) return 9; 278 return 10; 279 } 280 281 // get size for indicator string 282 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 283 // template: ("$NAME",($MIN,$MAX)) 284 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 285 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 286 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 287 } 288 289 // store indicator 290 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer){ 291 sprintf((char *) buffer, "(\"%s\",(%d,%d)),", 292 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 293 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 294 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 295 } 296 297 // structure: header [indicator [comma indicator]] footer 298 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 299 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 300 if (!num_indicators) return 2; 301 return 3 + (num_indicators-1) * 2; 302 } 303 304 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 305 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 306 if (index == 0) { 307 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 308 } 309 index--; 310 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 311 int indicator_index = index >> 1; 312 if ((index & 1) == 0){ 313 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 314 } 315 if (indicator_index == num_indicators - 1){ 316 return 8; // "\r\n\r\nOK\r\n" 317 } 318 return 1; // comma 319 } 320 321 static void hgp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer){ 322 if (index == 0){ 323 *buffer++ = '\r'; 324 *buffer++ = '\n'; 325 int len = strlen(HFP_INDICATOR); 326 memcpy(buffer, HFP_INDICATOR, len); 327 buffer += len; 328 *buffer++ = ':'; 329 return; 330 } 331 index--; 332 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 333 int indicator_index = index >> 1; 334 if ((index & 1) == 0){ 335 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer); 336 return; 337 } 338 if (indicator_index == num_indicators-1){ 339 memcpy(buffer, "\r\n\r\nOK\r\n", 8); 340 return; 341 } 342 *buffer = ','; 343 } 344 345 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 346 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 347 int i; 348 int offset = 0; 349 for (i = 0; i < hfp_generic_status_indicators_nr-1; i++) { 350 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 351 } 352 if (i < hfp_generic_status_indicators_nr){ 353 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 354 } 355 return offset; 356 } 357 358 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 359 if (buffer_size < hfp_generic_status_indicators_nr * 3) return 0; 360 int i; 361 int offset = 0; 362 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 363 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); 364 } 365 return offset; 366 } 367 368 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 369 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 370 int i; 371 int offset = 0; 372 for (i = 0; i < hfp_ag_indicators_nr-1; i++) { 373 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 374 } 375 if (i<hfp_ag_indicators_nr){ 376 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 377 } 378 return offset; 379 } 380 381 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 382 if (buffer_size < hfp_ag_call_hold_services_nr * 3) return 0; 383 int i; 384 int offset = snprintf(buffer, buffer_size, "("); 385 for (i = 0; i < hfp_ag_call_hold_services_nr-1; i++) { 386 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 387 } 388 if (i<hfp_ag_call_hold_services_nr){ 389 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 390 } 391 return offset; 392 } 393 394 static int hfp_ag_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 395 int start_segment, int num_segments, 396 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 397 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer)){ 398 399 // assumes: can send now == true 400 // assumes: num segments > 0 401 // assumes: individual segments are smaller than MTU 402 rfcomm_reserve_packet_buffer(); 403 int mtu = rfcomm_get_max_frame_size(cid); 404 uint8_t * data = rfcomm_get_outgoing_buffer(); 405 int offset = 0; 406 int segment = start_segment; 407 while (segment < num_segments){ 408 int segment_len = get_segment_len(hfp_connection, segment); 409 if (offset + segment_len > mtu) break; 410 // append segement 411 store_segment(hfp_connection, segment, data+offset); 412 offset += segment_len; 413 segment++; 414 } 415 rfcomm_send_prepared(cid, offset); 416 return segment; 417 } 418 419 // returns next segment to store 420 static int hfp_ag_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 421 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 422 return hfp_ag_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 423 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 424 } 425 426 static int hfp_ag_retrieve_indicators_status_cmd(uint16_t cid){ 427 char buffer[40]; 428 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_INDICATOR); 429 offset += hfp_ag_indicators_status_join(buffer+offset, sizeof(buffer)-offset); 430 431 buffer[offset] = 0; 432 433 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 434 buffer[offset] = 0; 435 return send_str_over_rfcomm(cid, buffer); 436 } 437 438 static int hfp_ag_set_indicator_status_update_cmd(uint16_t cid, uint8_t activate){ 439 // AT\r\n%s:3,0,0,%d\r\n 440 return hfp_ag_ok(cid); 441 } 442 443 444 static int hfp_ag_retrieve_can_hold_call_cmd(uint16_t cid){ 445 char buffer[40]; 446 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 447 offset += hfp_ag_call_services_join(buffer+offset, sizeof(buffer)-offset); 448 449 buffer[offset] = 0; 450 451 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 452 buffer[offset] = 0; 453 return send_str_over_rfcomm(cid, buffer); 454 } 455 456 457 static int hfp_ag_list_supported_generic_status_indicators_cmd(uint16_t cid){ 458 return hfp_ag_ok(cid); 459 } 460 461 static int hfp_ag_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 462 char buffer[40]; 463 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 464 offset += hfp_hf_indicators_join(buffer+offset, sizeof(buffer)-offset); 465 466 buffer[offset] = 0; 467 468 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ")\r\n\r\nOK\r\n"); 469 buffer[offset] = 0; 470 return send_str_over_rfcomm(cid, buffer); 471 } 472 473 static int hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 474 char buffer[40]; 475 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer)); 476 477 buffer[offset] = 0; 478 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 479 buffer[offset] = 0; 480 return send_str_over_rfcomm(cid, buffer); 481 } 482 483 static int hfp_ag_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 484 char buffer[20]; 485 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 486 return send_str_over_rfcomm(cid, buffer); 487 } 488 489 static int hfp_ag_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 490 char buffer[40]; 491 if (strlen(op.name) == 0){ 492 sprintf(buffer, "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 493 } else { 494 sprintf(buffer, "\r\n%s:%d,%d,%s\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format, op.name); 495 } 496 return send_str_over_rfcomm(cid, buffer); 497 } 498 499 500 static int hfp_ag_cmd_suggest_codec(uint16_t cid, uint8_t codec){ 501 char buffer[30]; 502 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CONFIRM_COMMON_CODEC, codec); 503 return send_str_over_rfcomm(cid, buffer); 504 } 505 506 static int hfp_ag_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 507 char buffer[30]; 508 sprintf(buffer, "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 509 return send_str_over_rfcomm(cid, buffer); 510 } 511 512 static int hfp_ag_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 513 char buffer[30]; 514 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_SPEAKER_GAIN, gain); 515 return send_str_over_rfcomm(cid, buffer); 516 } 517 518 static int hfp_ag_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 519 char buffer[30]; 520 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_MICROPHONE_GAIN, gain); 521 return send_str_over_rfcomm(cid, buffer); 522 } 523 524 static int hfp_ag_set_response_and_hold(uint16_t cid, int state){ 525 char buffer[30]; 526 sprintf(buffer, "\r\n%s: %d\r\n", HFP_RESPONSE_AND_HOLD, state); 527 return send_str_over_rfcomm(cid, buffer); 528 } 529 530 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 531 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 532 533 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 534 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 535 return HFP_CODEC_MSBC; 536 } 537 } 538 return HFP_CODEC_CVSD; 539 } 540 541 static void hfp_init_link_settings(hfp_connection_t * hfp_connection){ 542 // determine highest possible link setting 543 hfp_connection->link_setting = HFP_LINK_SETTINGS_D1; 544 // anything else requires eSCO support on both sides 545 if (hci_extended_sco_link_supported() && hci_remote_esco_supported(hfp_connection->acl_handle)){ 546 switch (hfp_connection->negotiated_codec){ 547 case HFP_CODEC_CVSD: 548 hfp_connection->link_setting = HFP_LINK_SETTINGS_S3; 549 if ((hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) 550 && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4))){ 551 hfp_connection->link_setting = HFP_LINK_SETTINGS_S4; 552 } 553 break; 554 case HFP_CODEC_MSBC: 555 hfp_connection->link_setting = HFP_LINK_SETTINGS_T2; 556 break; 557 default: 558 break; 559 } 560 } 561 log_info("hfp_init_link_settings: %u", hfp_connection->link_setting); 562 } 563 564 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 565 /* events ( == commands): 566 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 567 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 568 hf_trigger_codec_connection_setup == received BCC 569 ag_trigger_codec_connection_setup == received from AG to send BCS 570 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 571 */ 572 573 switch (hfp_connection->codecs_state){ 574 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 575 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 576 break; 577 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 578 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 579 break; 580 default: 581 break; 582 } 583 584 // printf(" -> State machine: CC\n"); 585 586 switch (hfp_connection->command){ 587 case HFP_CMD_AVAILABLE_CODECS: 588 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 589 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 590 hfp_ag_ok(hfp_connection->rfcomm_cid); 591 return 1; 592 } 593 594 switch (hfp_connection->codecs_state){ 595 case HFP_CODECS_AG_SENT_COMMON_CODEC: 596 case HFP_CODECS_EXCHANGED: 597 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 598 break; 599 default: 600 break; 601 } 602 hfp_ag_ok(hfp_connection->rfcomm_cid); 603 return 1; 604 605 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 606 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 607 hfp_ag_ok(hfp_connection->rfcomm_cid); 608 return 1; 609 610 case HFP_CMD_AG_SEND_COMMON_CODEC: 611 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 612 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 613 hfp_ag_cmd_suggest_codec(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 614 return 1; 615 616 case HFP_CMD_HF_CONFIRMED_CODEC: 617 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 618 hfp_connection->codecs_state = HFP_CODECS_ERROR; 619 hfp_ag_error(hfp_connection->rfcomm_cid); 620 return 1; 621 } 622 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 623 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 624 log_info("hfp: codec confirmed: %s", hfp_connection->negotiated_codec == HFP_CODEC_MSBC ? "mSBC" : "CVSD"); 625 hfp_ag_ok(hfp_connection->rfcomm_cid); 626 // now, pick link settings 627 hfp_init_link_settings(hfp_connection); 628 return 1; 629 default: 630 break; 631 } 632 return 0; 633 } 634 635 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 636 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 637 hfp_emit_slc_connection_event(hfp_callback, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 638 639 // if active call exist, set per-hfp_connection state active, too (when audio is on) 640 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 641 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 642 } 643 // if AG is ringing, also start ringing on the HF 644 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS && 645 hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 646 hfp_ag_hf_start_ringing(hfp_connection); 647 } 648 } 649 650 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 651 log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 652 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 653 int done = 0; 654 switch(hfp_connection->command){ 655 case HFP_CMD_SUPPORTED_FEATURES: 656 switch(hfp_connection->state){ 657 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 658 case HFP_EXCHANGE_SUPPORTED_FEATURES: 659 if (has_codec_negotiation_feature(hfp_connection)){ 660 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 661 } else { 662 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 663 } 664 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 665 return 1; 666 default: 667 break; 668 } 669 break; 670 case HFP_CMD_AVAILABLE_CODECS: 671 done = codecs_exchange_state_machine(hfp_connection); 672 673 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 674 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 675 } 676 return done; 677 678 case HFP_CMD_RETRIEVE_AG_INDICATORS: 679 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 680 // HF requested AG Indicators and we did expect it 681 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 682 // continue below in state switch 683 } 684 break; 685 686 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 687 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 688 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 689 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 690 return 1; 691 692 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 693 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 694 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 695 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 696 } else if (has_hf_indicators_feature(hfp_connection)){ 697 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 698 } else { 699 hfp_ag_slc_established(hfp_connection); 700 } 701 hfp_ag_set_indicator_status_update_cmd(hfp_connection->rfcomm_cid, 1); 702 return 1; 703 704 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 705 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 706 if (has_hf_indicators_feature(hfp_connection)){ 707 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 708 } 709 hfp_ag_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 710 if (!has_hf_indicators_feature(hfp_connection)){ 711 hfp_ag_slc_established(hfp_connection); 712 } 713 return 1; 714 715 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 716 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 717 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 718 hfp_ag_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 719 return 1; 720 721 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 722 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 723 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 724 hfp_ag_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 725 return 1; 726 727 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 728 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 729 hfp_ag_slc_established(hfp_connection); 730 hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 731 return 1; 732 default: 733 break; 734 } 735 736 switch (hfp_connection->state){ 737 case HFP_RETRIEVE_INDICATORS: { 738 int next_segment = hfp_ag_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 739 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 740 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 741 if (next_segment < num_segments){ 742 // prepare sending of next segment 743 hfp_connection->send_ag_indicators_segment = next_segment; 744 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 745 } else { 746 // done, go to next state 747 hfp_connection->send_ag_indicators_segment = 0; 748 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 749 } 750 return 1; 751 } 752 default: 753 break; 754 } 755 756 return done; 757 } 758 759 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 760 761 int done = codecs_exchange_state_machine(hfp_connection); 762 if (done) return done; 763 764 switch(hfp_connection->command){ 765 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 766 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 767 hfp_ag_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 768 return 1; 769 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 770 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 771 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 772 hfp_ag_ok(hfp_connection->rfcomm_cid); 773 hfp_ag_setup_audio_connection(hfp_connection); 774 } else { 775 hfp_ag_error(hfp_connection->rfcomm_cid); 776 } 777 return 1; 778 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 779 hfp_ag_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 780 return 1; 781 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 782 hfp_ag_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 783 return 1; 784 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 785 if (hfp_connection->network_operator.format != 0){ 786 hfp_ag_error(hfp_connection->rfcomm_cid); 787 } else { 788 hfp_ag_ok(hfp_connection->rfcomm_cid); 789 } 790 return 1; 791 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 792 hfp_ag_ok(hfp_connection->rfcomm_cid); 793 return 1; 794 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 795 if (hfp_connection->extended_audio_gateway_error){ 796 hfp_connection->extended_audio_gateway_error = 0; 797 hfp_ag_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 798 return 1; 799 } 800 break; 801 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 802 hfp_ag_ok(hfp_connection->rfcomm_cid); 803 return 1; 804 default: 805 break; 806 } 807 return 0; 808 } 809 810 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 811 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 812 hfp_connection->state > HFP_W2_DISCONNECT_SCO) return 0; 813 814 815 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->release_audio_connection){ 816 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 817 hfp_connection->release_audio_connection = 0; 818 gap_disconnect(hfp_connection->sco_handle); 819 return 1; 820 } 821 822 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 823 824 // run codecs exchange 825 int done = codecs_exchange_state_machine(hfp_connection); 826 if (done) return done; 827 828 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return done; 829 if (hfp_connection->establish_audio_connection){ 830 hfp_connection->state = HFP_W4_SCO_CONNECTED; 831 hfp_connection->establish_audio_connection = 0; 832 hfp_setup_synchronous_connection(hfp_connection); 833 return 1; 834 } 835 return 0; 836 } 837 838 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 839 btstack_linked_list_iterator_t it; 840 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 841 842 while (btstack_linked_list_iterator_has_next(&it)){ 843 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 844 if ( & hfp_connection->hfp_timeout == ts) { 845 return hfp_connection; 846 } 847 } 848 return NULL; 849 } 850 851 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 852 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 853 if (!hfp_connection) return; 854 855 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 856 hfp_connection->ag_ring = 1; 857 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 858 859 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 860 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 861 862 hfp_run_for_context(hfp_connection); 863 } 864 865 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 866 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 867 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 868 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 869 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 870 } 871 872 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 873 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 874 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 875 } 876 877 // 878 // transitition implementations for hfp_ag_call_state_machine 879 // 880 881 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 882 if (use_in_band_tone()){ 883 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 884 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 885 } else { 886 hfp_timeout_start(hfp_connection); 887 hfp_connection->ag_ring = 1; 888 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 889 hfp_connection->call_state = HFP_CALL_RINGING; 890 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 891 } 892 } 893 894 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 895 hfp_connection->ag_ring = 0; 896 hfp_connection->ag_send_clip = 0; 897 hfp_timeout_stop(hfp_connection); 898 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_STOP_RINGINIG); 899 } 900 901 static void hfp_ag_trigger_incoming_call(void){ 902 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 903 if (indicator_index < 0) return; 904 905 btstack_linked_list_iterator_t it; 906 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 907 while (btstack_linked_list_iterator_has_next(&it)){ 908 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 909 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 910 if (hfp_connection->call_state == HFP_CALL_IDLE){ 911 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 912 hfp_ag_hf_start_ringing(hfp_connection); 913 } 914 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 915 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 916 } 917 hfp_run_for_context(hfp_connection); 918 } 919 } 920 921 static void hfp_ag_transfer_callsetup_state(void){ 922 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 923 if (indicator_index < 0) return; 924 925 btstack_linked_list_iterator_t it; 926 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 927 while (btstack_linked_list_iterator_has_next(&it)){ 928 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 929 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 930 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 931 hfp_run_for_context(hfp_connection); 932 } 933 } 934 935 static void hfp_ag_transfer_call_state(void){ 936 int indicator_index = get_ag_indicator_index_for_name("call"); 937 if (indicator_index < 0) return; 938 939 btstack_linked_list_iterator_t it; 940 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 941 while (btstack_linked_list_iterator_has_next(&it)){ 942 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 943 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 944 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 945 hfp_run_for_context(hfp_connection); 946 } 947 } 948 949 static void hfp_ag_transfer_callheld_state(void){ 950 int indicator_index = get_ag_indicator_index_for_name("callheld"); 951 if (indicator_index < 0) return; 952 953 btstack_linked_list_iterator_t it; 954 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 955 while (btstack_linked_list_iterator_has_next(&it)){ 956 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 957 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 958 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 959 hfp_run_for_context(hfp_connection); 960 } 961 } 962 963 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 964 965 int call_indicator_index = get_ag_indicator_index_for_name("call"); 966 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 967 968 btstack_linked_list_iterator_t it; 969 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 970 while (btstack_linked_list_iterator_has_next(&it)){ 971 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 972 if (hfp_connection->call_state != HFP_CALL_RINGING && 973 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 974 975 hfp_ag_hf_stop_ringing(hfp_connection); 976 if (hfp_connection == source){ 977 hfp_connection->ok_pending = 1; 978 979 if (use_in_band_tone()){ 980 hfp_connection->call_state = HFP_CALL_ACTIVE; 981 } else { 982 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 983 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 984 } 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 } else { 990 hfp_connection->call_state = HFP_CALL_IDLE; 991 } 992 hfp_run_for_context(hfp_connection); 993 } 994 } 995 996 static void hfp_ag_ag_accept_call(void){ 997 998 int call_indicator_index = get_ag_indicator_index_for_name("call"); 999 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1000 1001 btstack_linked_list_iterator_t it; 1002 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1003 while (btstack_linked_list_iterator_has_next(&it)){ 1004 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1005 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 1006 1007 hfp_ag_hf_stop_ringing(hfp_connection); 1008 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1009 1010 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1011 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1012 1013 hfp_run_for_context(hfp_connection); 1014 break; // only single 1015 } 1016 } 1017 1018 static void hfp_ag_trigger_reject_call(void){ 1019 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1020 btstack_linked_list_iterator_t it; 1021 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1022 while (btstack_linked_list_iterator_has_next(&it)){ 1023 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1024 if (connection->call_state != HFP_CALL_RINGING && 1025 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1026 hfp_ag_hf_stop_ringing(connection); 1027 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1028 connection->call_state = HFP_CALL_IDLE; 1029 hfp_run_for_context(connection); 1030 } 1031 } 1032 1033 static void hfp_ag_trigger_terminate_call(void){ 1034 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1035 1036 btstack_linked_list_iterator_t it; 1037 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1038 while (btstack_linked_list_iterator_has_next(&it)){ 1039 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1040 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1041 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1042 hfp_connection->call_state = HFP_CALL_IDLE; 1043 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1044 hfp_connection->release_audio_connection = 1; 1045 hfp_run_for_context(hfp_connection); 1046 } 1047 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_TERMINATED); 1048 } 1049 1050 static void hfp_ag_set_callsetup_indicator(void){ 1051 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1052 if (!indicator){ 1053 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1054 return; 1055 }; 1056 indicator->status = hfp_gsm_callsetup_status(); 1057 } 1058 1059 static void hfp_ag_set_callheld_indicator(void){ 1060 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1061 if (!indicator){ 1062 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1063 return; 1064 }; 1065 indicator->status = hfp_gsm_callheld_status(); 1066 } 1067 1068 static void hfp_ag_set_call_indicator(void){ 1069 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1070 if (!indicator){ 1071 log_error("hfp_ag_set_call_state: call indicator is missing"); 1072 return; 1073 }; 1074 indicator->status = hfp_gsm_call_status(); 1075 } 1076 1077 static void hfp_ag_stop_ringing(void){ 1078 btstack_linked_list_iterator_t it; 1079 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1080 while (btstack_linked_list_iterator_has_next(&it)){ 1081 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1082 if (hfp_connection->call_state != HFP_CALL_RINGING && 1083 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1084 hfp_ag_hf_stop_ringing(hfp_connection); 1085 } 1086 } 1087 1088 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1089 btstack_linked_list_iterator_t it; 1090 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1091 while (btstack_linked_list_iterator_has_next(&it)){ 1092 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1093 if (hfp_connection->call_state == call_state) return hfp_connection; 1094 } 1095 return NULL; 1096 } 1097 1098 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1099 btstack_linked_list_iterator_t it; 1100 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1101 while (btstack_linked_list_iterator_has_next(&it)){ 1102 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1103 hfp_connection->send_response_and_hold_status = state + 1; 1104 } 1105 } 1106 1107 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1108 int indicator_index; 1109 switch (hfp_connection->call_state){ 1110 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1111 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1112 // we got event: audio hfp_connection established 1113 hfp_timeout_start(hfp_connection); 1114 hfp_connection->ag_ring = 1; 1115 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1116 hfp_connection->call_state = HFP_CALL_RINGING; 1117 hfp_connection->call_state = HFP_CALL_RINGING; 1118 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 1119 break; 1120 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1121 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1122 // we got event: audio hfp_connection established 1123 hfp_connection->call_state = HFP_CALL_ACTIVE; 1124 break; 1125 case HFP_CALL_W2_SEND_CALL_WAITING: 1126 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1127 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1128 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1129 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1130 break; 1131 default: 1132 break; 1133 } 1134 return 0; 1135 } 1136 // hfp_connection is used to identify originating HF 1137 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1138 int indicator_index; 1139 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1140 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1141 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1142 1143 //printf("hfp_ag_call_sm event %d \n", event); 1144 switch (event){ 1145 case HFP_AG_INCOMING_CALL: 1146 switch (hfp_gsm_call_status()){ 1147 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1148 switch (hfp_gsm_callsetup_status()){ 1149 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1150 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1151 hfp_ag_set_callsetup_indicator(); 1152 hfp_ag_trigger_incoming_call(); 1153 log_info("AG rings"); 1154 break; 1155 default: 1156 break; 1157 } 1158 break; 1159 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1160 switch (hfp_gsm_callsetup_status()){ 1161 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1162 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1163 hfp_ag_set_callsetup_indicator(); 1164 hfp_ag_trigger_incoming_call(); 1165 log_info("AG call waiting"); 1166 break; 1167 default: 1168 break; 1169 } 1170 break; 1171 } 1172 break; 1173 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1174 switch (hfp_gsm_call_status()){ 1175 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1176 switch (hfp_gsm_callsetup_status()){ 1177 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1178 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1179 hfp_ag_set_call_indicator(); 1180 hfp_ag_set_callsetup_indicator(); 1181 hfp_ag_ag_accept_call(); 1182 log_info("AG answers call, accept call by GSM"); 1183 break; 1184 default: 1185 break; 1186 } 1187 break; 1188 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1189 switch (hfp_gsm_callsetup_status()){ 1190 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1191 log_info("AG: current call is placed on hold, incoming call gets active"); 1192 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1193 hfp_ag_set_callsetup_indicator(); 1194 hfp_ag_set_callheld_indicator(); 1195 hfp_ag_transfer_callsetup_state(); 1196 hfp_ag_transfer_callheld_state(); 1197 break; 1198 default: 1199 break; 1200 } 1201 break; 1202 } 1203 break; 1204 1205 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1206 switch (hfp_gsm_call_status()){ 1207 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1208 switch (hfp_gsm_callheld_status()){ 1209 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1210 log_info("AG: joining held call with active call"); 1211 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1212 hfp_ag_set_callheld_indicator(); 1213 hfp_ag_transfer_callheld_state(); 1214 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1215 break; 1216 default: 1217 break; 1218 } 1219 break; 1220 default: 1221 break; 1222 } 1223 break; 1224 1225 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1226 switch (hfp_gsm_call_status()){ 1227 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1228 switch (hfp_gsm_callsetup_status()){ 1229 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1230 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1231 hfp_ag_set_callsetup_indicator(); 1232 hfp_ag_set_call_indicator(); 1233 hfp_ag_hf_accept_call(hfp_connection); 1234 log_info("HF answers call, accept call by GSM"); 1235 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_ANSWERED); 1236 break; 1237 default: 1238 break; 1239 } 1240 break; 1241 default: 1242 break; 1243 } 1244 break; 1245 1246 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1247 switch (hfp_gsm_call_status()){ 1248 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1249 switch (hfp_gsm_callsetup_status()){ 1250 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1251 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1252 hfp_ag_response_and_hold_active = 1; 1253 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1254 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1255 // as with regualr call 1256 hfp_ag_set_call_indicator(); 1257 hfp_ag_set_callsetup_indicator(); 1258 hfp_ag_ag_accept_call(); 1259 log_info("AG response and hold - hold by AG"); 1260 break; 1261 default: 1262 break; 1263 } 1264 break; 1265 default: 1266 break; 1267 } 1268 break; 1269 1270 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1271 switch (hfp_gsm_call_status()){ 1272 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1273 switch (hfp_gsm_callsetup_status()){ 1274 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1275 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1276 hfp_ag_response_and_hold_active = 1; 1277 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1278 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1279 // as with regualr call 1280 hfp_ag_set_call_indicator(); 1281 hfp_ag_set_callsetup_indicator(); 1282 hfp_ag_hf_accept_call(hfp_connection); 1283 log_info("AG response and hold - hold by HF"); 1284 break; 1285 default: 1286 break; 1287 } 1288 break; 1289 default: 1290 break; 1291 } 1292 break; 1293 1294 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1295 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1296 if (!hfp_ag_response_and_hold_active) break; 1297 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1298 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1299 hfp_ag_response_and_hold_active = 0; 1300 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1301 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1302 log_info("Held Call accepted and active"); 1303 break; 1304 1305 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1306 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1307 if (!hfp_ag_response_and_hold_active) break; 1308 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1309 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1310 hfp_ag_response_and_hold_active = 0; 1311 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1312 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1313 // from terminate by ag 1314 hfp_ag_set_call_indicator(); 1315 hfp_ag_trigger_terminate_call(); 1316 break; 1317 1318 case HFP_AG_TERMINATE_CALL_BY_HF: 1319 switch (hfp_gsm_call_status()){ 1320 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1321 switch (hfp_gsm_callsetup_status()){ 1322 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1323 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1324 hfp_ag_set_callsetup_indicator(); 1325 hfp_ag_transfer_callsetup_state(); 1326 hfp_ag_trigger_reject_call(); 1327 log_info("HF Rejected Incoming call, AG terminate call"); 1328 break; 1329 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1330 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1331 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1332 hfp_ag_set_callsetup_indicator(); 1333 hfp_ag_transfer_callsetup_state(); 1334 log_info("AG terminate outgoing call process"); 1335 break; 1336 default: 1337 break; 1338 } 1339 break; 1340 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1341 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1342 hfp_ag_set_call_indicator(); 1343 hfp_ag_transfer_call_state(); 1344 hfp_connection->call_state = HFP_CALL_IDLE; 1345 log_info("AG terminate call"); 1346 break; 1347 } 1348 break; 1349 1350 case HFP_AG_TERMINATE_CALL_BY_AG: 1351 switch (hfp_gsm_call_status()){ 1352 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1353 switch (hfp_gsm_callsetup_status()){ 1354 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1355 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1356 hfp_ag_set_callsetup_indicator(); 1357 hfp_ag_trigger_reject_call(); 1358 log_info("AG Rejected Incoming call, AG terminate call"); 1359 break; 1360 default: 1361 break; 1362 } 1363 break; 1364 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1365 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1366 hfp_ag_set_callsetup_indicator(); 1367 hfp_ag_set_call_indicator(); 1368 hfp_ag_trigger_terminate_call(); 1369 log_info("AG terminate call"); 1370 break; 1371 default: 1372 break; 1373 } 1374 break; 1375 case HFP_AG_CALL_DROPPED: 1376 switch (hfp_gsm_call_status()){ 1377 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1378 switch (hfp_gsm_callsetup_status()){ 1379 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1380 hfp_ag_stop_ringing(); 1381 log_info("Incoming call interrupted"); 1382 break; 1383 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1384 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1385 log_info("Outgoing call interrupted\n"); 1386 log_info("AG notify call dropped\n"); 1387 break; 1388 default: 1389 break; 1390 } 1391 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1392 hfp_ag_set_callsetup_indicator(); 1393 hfp_ag_transfer_callsetup_state(); 1394 break; 1395 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1396 if (hfp_ag_response_and_hold_active) { 1397 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1398 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1399 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1400 } 1401 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1402 hfp_ag_set_callsetup_indicator(); 1403 hfp_ag_set_call_indicator(); 1404 hfp_ag_trigger_terminate_call(); 1405 log_info("AG notify call dropped"); 1406 break; 1407 default: 1408 break; 1409 } 1410 break; 1411 1412 case HFP_AG_OUTGOING_CALL_INITIATED: 1413 // directly reject call if number of free slots is exceeded 1414 if (!hfp_gsm_call_possible()){ 1415 hfp_connection->send_error = 1; 1416 hfp_run_for_context(hfp_connection); 1417 break; 1418 } 1419 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1420 1421 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1422 1423 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1424 break; 1425 1426 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1427 // directly reject call if number of free slots is exceeded 1428 if (!hfp_gsm_call_possible()){ 1429 hfp_connection->send_error = 1; 1430 hfp_run_for_context(hfp_connection); 1431 break; 1432 } 1433 1434 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1435 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1436 1437 log_info("Redial last number"); 1438 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1439 1440 if (strlen(last_dialed_number) > 0){ 1441 log_info("Last number exists: accept call"); 1442 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1443 } else { 1444 log_info("log_infoLast number missing: reject call"); 1445 hfp_ag_outgoing_call_rejected(); 1446 } 1447 break; 1448 } 1449 case HFP_AG_OUTGOING_CALL_REJECTED: 1450 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1451 if (!hfp_connection){ 1452 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1453 break; 1454 } 1455 1456 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1457 hfp_connection->call_state = HFP_CALL_IDLE; 1458 hfp_connection->send_error = 1; 1459 hfp_run_for_context(hfp_connection); 1460 break; 1461 1462 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1463 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1464 if (!hfp_connection){ 1465 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1466 break; 1467 } 1468 1469 hfp_connection->ok_pending = 1; 1470 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1471 1472 // trigger callsetup to be 1473 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1474 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1475 1476 hfp_ag_set_callsetup_indicator(); 1477 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1478 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1479 1480 // put current call on hold if active 1481 if (put_call_on_hold){ 1482 log_info("AG putting current call on hold for new outgoing calllog_info"); 1483 hfp_ag_set_callheld_indicator(); 1484 indicator_index = get_ag_indicator_index_for_name("callheld"); 1485 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1486 } 1487 1488 // start audio if needed 1489 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1490 break; 1491 } 1492 case HFP_AG_OUTGOING_CALL_RINGING: 1493 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1494 if (!hfp_connection){ 1495 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1496 break; 1497 } 1498 1499 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1500 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1501 hfp_ag_set_callsetup_indicator(); 1502 hfp_ag_transfer_callsetup_state(); 1503 break; 1504 1505 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1506 // get outgoing call 1507 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1508 if (!hfp_connection){ 1509 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1510 } 1511 if (!hfp_connection){ 1512 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1513 break; 1514 } 1515 1516 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1517 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1518 hfp_connection->call_state = HFP_CALL_ACTIVE; 1519 hfp_ag_set_callsetup_indicator(); 1520 hfp_ag_set_call_indicator(); 1521 hfp_ag_transfer_call_state(); 1522 hfp_ag_transfer_callsetup_state(); 1523 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1524 hfp_ag_set_callheld_indicator(); 1525 hfp_ag_transfer_callheld_state(); 1526 } 1527 break; 1528 } 1529 1530 case HFP_AG_CALL_HOLD_USER_BUSY: 1531 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1532 hfp_ag_set_callsetup_indicator(); 1533 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1534 hfp_connection->call_state = HFP_CALL_ACTIVE; 1535 log_info("AG: Call Waiting, User Busy"); 1536 break; 1537 1538 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1539 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1540 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1541 1542 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1543 if (call_held || call_setup_in_progress){ 1544 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1545 1546 } 1547 1548 if (call_setup_in_progress){ 1549 log_info("AG: Call Dropped, Accept new call"); 1550 hfp_ag_set_callsetup_indicator(); 1551 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1552 } else { 1553 log_info("AG: Call Dropped, Resume held call"); 1554 } 1555 if (call_held){ 1556 hfp_ag_set_callheld_indicator(); 1557 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1558 } 1559 1560 hfp_connection->call_state = HFP_CALL_ACTIVE; 1561 break; 1562 } 1563 1564 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1565 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1566 // only update if callsetup changed 1567 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1568 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1569 1570 if (call_setup_in_progress){ 1571 log_info("AG: Call on Hold, Accept new call"); 1572 hfp_ag_set_callsetup_indicator(); 1573 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1574 } else { 1575 log_info("AG: Swap calls"); 1576 } 1577 1578 hfp_ag_set_callheld_indicator(); 1579 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1580 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1581 hfp_connection->call_state = HFP_CALL_ACTIVE; 1582 break; 1583 } 1584 1585 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1586 // Adds a held call to the conversation. 1587 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1588 log_info("AG: Join 3-way-call"); 1589 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1590 hfp_ag_set_callheld_indicator(); 1591 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1592 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1593 } 1594 hfp_connection->call_state = HFP_CALL_ACTIVE; 1595 break; 1596 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1597 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1598 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1599 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1600 hfp_ag_set_call_indicator(); 1601 hfp_ag_set_callheld_indicator(); 1602 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1603 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1604 hfp_connection->call_state = HFP_CALL_IDLE; 1605 break; 1606 1607 default: 1608 break; 1609 } 1610 1611 1612 } 1613 1614 1615 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1616 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1617 if (!active_call) return; 1618 1619 int idx = active_call->index; 1620 hfp_enhanced_call_dir_t dir = active_call->direction; 1621 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1622 hfp_enhanced_call_mode_t mode = active_call->mode; 1623 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1624 uint8_t type = active_call->clip_type; 1625 char * number = active_call->clip_number; 1626 1627 char buffer[100]; 1628 // TODO: check length of a buffer, to fit the MTU 1629 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1630 if (number){ 1631 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ", \"%s\",%u", number, type); 1632 } 1633 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1634 log_info("hfp_ag_send_current_call_status 000 index %d, dir %d, status %d, mode %d, mpty %d, type %d, number %s", idx, dir, status, 1635 mode, mpty, type, number); 1636 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1637 } 1638 1639 static void hfp_run_for_context(hfp_connection_t *hfp_connection){ 1640 1641 log_info("hfp_run_for_context %p", hfp_connection); 1642 1643 if (!hfp_connection) return; 1644 1645 if (!hfp_connection->rfcomm_cid) return; 1646 1647 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1648 log_info("hfp_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1649 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1650 return; 1651 } 1652 1653 if (hfp_connection->send_status_of_current_calls){ 1654 hfp_connection->ok_pending = 0; 1655 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1656 hfp_connection->next_call_index++; 1657 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1658 } else { 1659 hfp_connection->next_call_index = 0; 1660 hfp_connection->ok_pending = 1; 1661 hfp_connection->send_status_of_current_calls = 0; 1662 } 1663 return; 1664 } 1665 1666 if (hfp_connection->ag_notify_incoming_call_waiting){ 1667 hfp_connection->ag_notify_incoming_call_waiting = 0; 1668 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1669 return; 1670 } 1671 1672 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1673 hfp_connection->ok_pending = 0; 1674 hfp_connection->send_error = 0; 1675 hfp_connection->command = HFP_CMD_NONE; 1676 hfp_ag_error(hfp_connection->rfcomm_cid); 1677 return; 1678 } 1679 1680 if (hfp_connection->send_error){ 1681 hfp_connection->send_error = 0; 1682 hfp_connection->command = HFP_CMD_NONE; 1683 hfp_ag_error(hfp_connection->rfcomm_cid); 1684 return; 1685 } 1686 1687 // note: before update AG indicators and ok_pending 1688 if (hfp_connection->send_response_and_hold_status){ 1689 int status = hfp_connection->send_response_and_hold_status - 1; 1690 hfp_connection->send_response_and_hold_status = 0; 1691 hfp_ag_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1692 return; 1693 } 1694 1695 if (hfp_connection->ok_pending){ 1696 hfp_connection->ok_pending = 0; 1697 hfp_connection->command = HFP_CMD_NONE; 1698 hfp_ag_ok(hfp_connection->rfcomm_cid); 1699 return; 1700 } 1701 1702 // update AG indicators 1703 if (hfp_connection->ag_indicators_status_update_bitmap){ 1704 int i; 1705 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1706 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1707 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1708 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1709 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1710 break; 1711 } 1712 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1713 return; 1714 } 1715 } 1716 } 1717 1718 if (hfp_connection->ag_ring){ 1719 hfp_connection->ag_ring = 0; 1720 hfp_connection->command = HFP_CMD_NONE; 1721 hfp_ag_ring(hfp_connection->rfcomm_cid); 1722 return; 1723 } 1724 1725 if (hfp_connection->ag_send_clip){ 1726 hfp_connection->ag_send_clip = 0; 1727 hfp_connection->command = HFP_CMD_NONE; 1728 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1729 return; 1730 } 1731 1732 if (hfp_connection->send_phone_number_for_voice_tag){ 1733 hfp_connection->send_phone_number_for_voice_tag = 0; 1734 hfp_connection->command = HFP_CMD_NONE; 1735 hfp_connection->ok_pending = 1; 1736 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1737 return; 1738 } 1739 1740 if (hfp_connection->send_subscriber_number){ 1741 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1742 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1743 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1744 } else { 1745 hfp_connection->send_subscriber_number = 0; 1746 hfp_connection->next_subscriber_number_to_send = 0; 1747 hfp_ag_ok(hfp_connection->rfcomm_cid); 1748 } 1749 hfp_connection->command = HFP_CMD_NONE; 1750 } 1751 1752 if (hfp_connection->send_microphone_gain){ 1753 hfp_connection->send_microphone_gain = 0; 1754 hfp_connection->command = HFP_CMD_NONE; 1755 hfp_ag_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1756 return; 1757 } 1758 1759 if (hfp_connection->send_speaker_gain){ 1760 hfp_connection->send_speaker_gain = 0; 1761 hfp_connection->command = HFP_CMD_NONE; 1762 hfp_ag_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1763 return; 1764 } 1765 1766 if (hfp_connection->send_ag_status_indicators){ 1767 hfp_connection->send_ag_status_indicators = 0; 1768 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1769 return; 1770 } 1771 1772 int done = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1773 if (!done){ 1774 done = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1775 } 1776 1777 if (!done){ 1778 done = call_setup_state_machine(hfp_connection); 1779 } 1780 1781 if (!done){ 1782 done = hfp_ag_run_for_audio_connection(hfp_connection); 1783 } 1784 1785 if (hfp_connection->command == HFP_CMD_NONE && !done){ 1786 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1787 switch(hfp_connection->state){ 1788 case HFP_W2_DISCONNECT_RFCOMM: 1789 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1790 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1791 break; 1792 default: 1793 break; 1794 } 1795 } 1796 if (done){ 1797 hfp_connection->command = HFP_CMD_NONE; 1798 } 1799 // 1800 if (done) { 1801 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1802 } 1803 } 1804 1805 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1806 int i; 1807 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1808 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1809 if (indicator->uuid == number){ 1810 return indicator; 1811 } 1812 } 1813 return NULL; 1814 } 1815 1816 static void hfp_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1817 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1818 if (!hfp_connection) return; 1819 1820 char last_char = packet[size-1]; 1821 packet[size-1] = 0; 1822 log_info("HFP_RX %s", packet); 1823 packet[size-1] = last_char; 1824 1825 int pos; 1826 for (pos = 0; pos < size ; pos++){ 1827 hfp_parse(hfp_connection, packet[pos], 0); 1828 } 1829 hfp_generic_status_indicator_t * indicator; 1830 int value; 1831 switch(hfp_connection->command){ 1832 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1833 if (hfp_ag_response_and_hold_active){ 1834 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1835 } 1836 hfp_connection->ok_pending = 1; 1837 break; 1838 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1839 value = atoi((char *)&hfp_connection->line_buffer[0]); 1840 log_info("HF Response and Hold: %u", value); 1841 switch(value){ 1842 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1843 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1844 break; 1845 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1846 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1847 break; 1848 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1849 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1850 break; 1851 default: 1852 break; 1853 } 1854 hfp_connection->ok_pending = 1; 1855 break; 1856 case HFP_CMD_HF_INDICATOR_STATUS: 1857 hfp_connection->command = HFP_CMD_NONE; 1858 // find indicator by assigned number 1859 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1860 if (!indicator){ 1861 hfp_connection->send_error = 1; 1862 break; 1863 } 1864 value = atoi((char *)&hfp_connection->line_buffer[0]); 1865 switch (indicator->uuid){ 1866 case 1: // enhanced security 1867 if (value > 1) { 1868 hfp_connection->send_error = 1; 1869 return; 1870 } 1871 log_info("HF Indicator 'enhanced security' set to %u", value); 1872 break; 1873 case 2: // battery level 1874 if (value > 100){ 1875 hfp_connection->send_error = 1; 1876 return; 1877 } 1878 log_info("HF Indicator 'battery' set to %u", value); 1879 break; 1880 default: 1881 log_info("HF Indicator unknown set to %u", value); 1882 break; 1883 } 1884 hfp_connection->ok_pending = 1; 1885 break; 1886 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1887 // expected by SLC state machine 1888 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1889 hfp_connection->send_ag_indicators_segment = 0; 1890 hfp_connection->send_ag_status_indicators = 1; 1891 break; 1892 case HFP_CMD_LIST_CURRENT_CALLS: 1893 hfp_connection->command = HFP_CMD_NONE; 1894 hfp_connection->next_call_index = 0; 1895 hfp_connection->send_status_of_current_calls = 1; 1896 break; 1897 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1898 if (subscriber_numbers_count == 0){ 1899 hfp_ag_ok(hfp_connection->rfcomm_cid); 1900 break; 1901 } 1902 hfp_connection->next_subscriber_number_to_send = 0; 1903 hfp_connection->send_subscriber_number = 1; 1904 break; 1905 case HFP_CMD_TRANSMIT_DTMF_CODES: 1906 hfp_connection->command = HFP_CMD_NONE; 1907 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &hfp_connection->line_buffer[0]); 1908 break; 1909 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1910 hfp_connection->command = HFP_CMD_NONE; 1911 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1912 break; 1913 case HFP_CMD_TURN_OFF_EC_AND_NR: 1914 hfp_connection->command = HFP_CMD_NONE; 1915 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1916 hfp_connection->ok_pending = 1; 1917 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1918 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1919 } else { 1920 hfp_connection->send_error = 1; 1921 } 1922 break; 1923 case HFP_CMD_CALL_ANSWERED: 1924 hfp_connection->command = HFP_CMD_NONE; 1925 log_info("HFP: ATA"); 1926 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1927 break; 1928 case HFP_CMD_HANG_UP_CALL: 1929 hfp_connection->command = HFP_CMD_NONE; 1930 hfp_connection->ok_pending = 1; 1931 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1932 break; 1933 case HFP_CMD_CALL_HOLD: { 1934 // TODO: fully implement this 1935 log_error("HFP: unhandled call hold type %c", hfp_connection->line_buffer[0]); 1936 hfp_connection->command = HFP_CMD_NONE; 1937 hfp_connection->ok_pending = 1; 1938 hfp_connection->call_index = 0; 1939 1940 if (hfp_connection->line_buffer[1] != '\0'){ 1941 hfp_connection->call_index = atoi((char *)&hfp_connection->line_buffer[1]); 1942 } 1943 1944 switch (hfp_connection->line_buffer[0]){ 1945 case '0': 1946 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1947 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1948 break; 1949 case '1': 1950 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1951 // Where both a held and a waiting call exist, the above procedures shall apply to the 1952 // waiting call (i.e., not to the held call) in conflicting situation. 1953 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1954 break; 1955 case '2': 1956 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1957 // Where both a held and a waiting call exist, the above procedures shall apply to the 1958 // waiting call (i.e., not to the held call) in conflicting situation. 1959 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1960 break; 1961 case '3': 1962 // Adds a held call to the conversation. 1963 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1964 break; 1965 case '4': 1966 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1967 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1968 break; 1969 default: 1970 break; 1971 } 1972 break; 1973 } 1974 case HFP_CMD_CALL_PHONE_NUMBER: 1975 hfp_connection->command = HFP_CMD_NONE; 1976 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1977 break; 1978 case HFP_CMD_REDIAL_LAST_NUMBER: 1979 hfp_connection->command = HFP_CMD_NONE; 1980 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1981 break; 1982 case HFP_CMD_ENABLE_CLIP: 1983 hfp_connection->command = HFP_CMD_NONE; 1984 hfp_connection->clip_enabled = hfp_connection->line_buffer[8] != '0'; 1985 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1986 hfp_connection->ok_pending = 1; 1987 break; 1988 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1989 hfp_connection->command = HFP_CMD_NONE; 1990 hfp_connection->call_waiting_notification_enabled = hfp_connection->line_buffer[8] != '0'; 1991 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1992 hfp_connection->ok_pending = 1; 1993 break; 1994 case HFP_CMD_SET_SPEAKER_GAIN: 1995 hfp_connection->command = HFP_CMD_NONE; 1996 hfp_connection->ok_pending = 1; 1997 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 1998 break; 1999 case HFP_CMD_SET_MICROPHONE_GAIN: 2000 hfp_connection->command = HFP_CMD_NONE; 2001 hfp_connection->ok_pending = 1; 2002 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2003 break; 2004 default: 2005 break; 2006 } 2007 } 2008 2009 static void hfp_run(void){ 2010 btstack_linked_list_iterator_t it; 2011 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2012 while (btstack_linked_list_iterator_has_next(&it)){ 2013 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2014 hfp_run_for_context(hfp_connection); 2015 } 2016 } 2017 2018 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2019 switch (packet_type){ 2020 case RFCOMM_DATA_PACKET: 2021 hfp_handle_rfcomm_data(packet_type, channel, packet, size); 2022 break; 2023 case HCI_EVENT_PACKET: 2024 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2025 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2026 hfp_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2027 return; 2028 } 2029 hfp_handle_hci_event(packet_type, channel, packet, size); 2030 break; 2031 default: 2032 break; 2033 } 2034 2035 hfp_run(); 2036 } 2037 2038 2039 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2040 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2041 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2042 return; 2043 } 2044 int i; 2045 hfp_codecs_nr = codecs_nr; 2046 for (i=0; i < codecs_nr; i++){ 2047 hfp_codecs[i] = codecs[i]; 2048 } 2049 } 2050 2051 void hfp_ag_init_supported_features(uint32_t supported_features){ 2052 hfp_supported_features = supported_features; 2053 } 2054 2055 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2056 hfp_ag_indicators_nr = ag_indicators_nr; 2057 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2058 } 2059 2060 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2061 if (hf_indicators_nr > HFP_MAX_NUM_HF_INDICATORS) return; 2062 hfp_generic_status_indicators_nr = hf_indicators_nr; 2063 memcpy(hfp_generic_status_indicators, hf_indicators, hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2064 } 2065 2066 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2067 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2068 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2069 } 2070 2071 2072 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2073 // register for HCI events 2074 hci_event_callback_registration.callback = &packet_handler; 2075 hci_add_event_handler(&hci_event_callback_registration); 2076 2077 rfcomm_register_service(&packet_handler, rfcomm_channel_nr, 0xffff); 2078 2079 hfp_ag_response_and_hold_active = 0; 2080 subscriber_numbers = NULL; 2081 subscriber_numbers_count = 0; 2082 2083 hfp_set_packet_handler_for_rfcomm_connections(&packet_handler); 2084 2085 hfp_gsm_init(); 2086 } 2087 2088 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2089 hfp_establish_service_level_connection(bd_addr, SDP_Handsfree); 2090 } 2091 2092 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2093 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2094 if (!hfp_connection){ 2095 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2096 return; 2097 } 2098 hfp_release_service_level_connection(hfp_connection); 2099 hfp_run_for_context(hfp_connection); 2100 } 2101 2102 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2103 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2104 if (!hfp_connection){ 2105 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2106 return; 2107 } 2108 hfp_connection->extended_audio_gateway_error = 0; 2109 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2110 return; 2111 } 2112 hfp_connection->extended_audio_gateway_error = error; 2113 hfp_run_for_context(hfp_connection); 2114 } 2115 2116 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2117 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2118 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2119 2120 hfp_connection->establish_audio_connection = 1; 2121 2122 if (!has_codec_negotiation_feature(hfp_connection)){ 2123 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2124 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2125 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2126 // now, pick link settings 2127 hfp_init_link_settings(hfp_connection); 2128 } 2129 2130 switch (hfp_connection->codecs_state){ 2131 case HFP_CODECS_IDLE: 2132 case HFP_CODECS_RECEIVED_LIST: 2133 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2134 case HFP_CODECS_ERROR: 2135 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2136 break; 2137 default: 2138 break; 2139 } 2140 } 2141 2142 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2143 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2144 if (!hfp_connection){ 2145 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2146 return; 2147 } 2148 hfp_connection->establish_audio_connection = 0; 2149 hfp_ag_setup_audio_connection(hfp_connection); 2150 hfp_run_for_context(hfp_connection); 2151 } 2152 2153 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2154 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2155 if (!hfp_connection){ 2156 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2157 return; 2158 } 2159 hfp_release_audio_connection(hfp_connection); 2160 hfp_run_for_context(hfp_connection); 2161 } 2162 2163 /** 2164 * @brief Enable in-band ring tone 2165 */ 2166 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2167 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2168 return; 2169 } 2170 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2171 2172 btstack_linked_list_iterator_t it; 2173 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2174 while (btstack_linked_list_iterator_has_next(&it)){ 2175 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2176 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2177 hfp_run_for_context(hfp_connection); 2178 } 2179 } 2180 2181 /** 2182 * @brief Called from GSM 2183 */ 2184 void hfp_ag_incoming_call(void){ 2185 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2186 } 2187 2188 /** 2189 * @brief number is stored. 2190 */ 2191 void hfp_ag_set_clip(uint8_t type, const char * number){ 2192 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2193 } 2194 2195 void hfp_ag_call_dropped(void){ 2196 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2197 } 2198 2199 // call from AG UI 2200 void hfp_ag_answer_incoming_call(void){ 2201 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2202 } 2203 2204 void hfp_ag_join_held_call(void){ 2205 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2206 } 2207 2208 void hfp_ag_terminate_call(void){ 2209 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2210 } 2211 2212 void hfp_ag_outgoing_call_ringing(void){ 2213 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2214 } 2215 2216 void hfp_ag_outgoing_call_established(void){ 2217 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2218 } 2219 2220 void hfp_ag_outgoing_call_rejected(void){ 2221 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2222 } 2223 2224 void hfp_ag_outgoing_call_accepted(void){ 2225 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2226 } 2227 2228 void hfp_ag_hold_incoming_call(void){ 2229 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2230 } 2231 2232 void hfp_ag_accept_held_incoming_call(void) { 2233 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2234 } 2235 2236 void hfp_ag_reject_held_incoming_call(void){ 2237 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2238 } 2239 2240 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2241 int indicator_index = get_ag_indicator_index_for_name(name); 2242 if (indicator_index < 0) return; 2243 hfp_ag_indicators[indicator_index].status = value; 2244 2245 2246 btstack_linked_list_iterator_t it; 2247 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2248 while (btstack_linked_list_iterator_has_next(&it)){ 2249 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2250 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2251 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2252 continue; 2253 } 2254 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2255 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2256 hfp_run_for_context(hfp_connection); 2257 } 2258 } 2259 2260 void hfp_ag_set_registration_status(int status){ 2261 hfp_ag_set_ag_indicator("service", status); 2262 } 2263 2264 void hfp_ag_set_signal_strength(int strength){ 2265 hfp_ag_set_ag_indicator("signal", strength); 2266 } 2267 2268 void hfp_ag_set_roaming_status(int status){ 2269 hfp_ag_set_ag_indicator("roam", status); 2270 } 2271 2272 void hfp_ag_set_battery_level(int level){ 2273 hfp_ag_set_ag_indicator("battchg", level); 2274 } 2275 2276 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2277 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2278 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2279 if (!hfp_connection){ 2280 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2281 return; 2282 } 2283 2284 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2285 log_info("AG cannot acivate voice recognition - not supported by HF"); 2286 return; 2287 } 2288 2289 if (activate){ 2290 hfp_ag_establish_audio_connection(acl_handle); 2291 } 2292 2293 hfp_connection->ag_activate_voice_recognition = activate; 2294 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2295 hfp_run_for_context(hfp_connection); 2296 } 2297 2298 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2299 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2300 if (!hfp_connection){ 2301 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2302 return; 2303 } 2304 if (hfp_connection->microphone_gain != gain){ 2305 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2306 hfp_connection->microphone_gain = gain; 2307 hfp_connection->send_microphone_gain = 1; 2308 } 2309 hfp_run_for_context(hfp_connection); 2310 } 2311 2312 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2313 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2314 if (!hfp_connection){ 2315 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2316 return; 2317 } 2318 if (hfp_connection->speaker_gain != gain){ 2319 hfp_connection->speaker_gain = gain; 2320 hfp_connection->send_speaker_gain = 1; 2321 } 2322 hfp_run_for_context(hfp_connection); 2323 } 2324 2325 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2326 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2327 if (!hfp_connection){ 2328 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2329 return; 2330 } 2331 hfp_ag_set_clip(0, number); 2332 hfp_connection->send_phone_number_for_voice_tag = 1; 2333 } 2334 2335 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2336 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2337 if (!hfp_connection){ 2338 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2339 return; 2340 } 2341 hfp_connection->send_error = 1; 2342 } 2343 2344 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2345 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2346 if (!hfp_connection){ 2347 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2348 return; 2349 } 2350 hfp_connection->ok_pending = 1; 2351 } 2352 2353 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2354 subscriber_numbers = numbers; 2355 subscriber_numbers_count = numbers_count; 2356 } 2357 2358 void hfp_ag_clear_last_dialed_number(void){ 2359 hfp_gsm_clear_last_dialed_number(); 2360 } 2361 2362 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2363 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2364 if (!hfp_connection){ 2365 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2366 return; 2367 } 2368 if (!hfp_connection->call_waiting_notification_enabled) return; 2369 2370 hfp_connection->ag_notify_incoming_call_waiting = 1; 2371 hfp_run_for_context(hfp_connection); 2372 } 2373 2374