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 #define BTSTACK_FILE__ "hfp_ag.c" 39 40 // ***************************************************************************** 41 // 42 // HFP Audio Gateway (AG) unit 43 // 44 // ***************************************************************************** 45 46 #include "btstack_config.h" 47 48 #include <stdint.h> 49 #include <string.h> 50 51 #include "hci_cmd.h" 52 #include "btstack_run_loop.h" 53 54 #include "bluetooth_sdp.h" 55 #include "hci.h" 56 #include "btstack_memory.h" 57 #include "hci_dump.h" 58 #include "l2cap.h" 59 #include "btstack_debug.h" 60 #include "btstack_event.h" 61 #include "classic/core.h" 62 #include "classic/hfp.h" 63 #include "classic/hfp_ag.h" 64 #include "classic/hfp_gsm_model.h" 65 #include "classic/sdp_client_rfcomm.h" 66 #include "classic/sdp_server.h" 67 #include "classic/sdp_util.h" 68 69 // private prototypes 70 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection); 71 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection); 72 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 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 static btstack_packet_callback_registration_t hci_event_callback_registration; 83 84 // gobals 85 static const char default_hfp_ag_service_name[] = "Voice gateway"; 86 87 static uint16_t hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 88 89 static uint8_t hfp_codecs_nr = 0; 90 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 91 92 static int hfp_ag_indicators_nr = 0; 93 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_INDICATORS]; 94 95 static int hfp_generic_status_indicators_nr = 0; 96 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_INDICATORS]; 97 98 static int hfp_ag_call_hold_services_nr = 0; 99 static char *hfp_ag_call_hold_services[6]; 100 static btstack_packet_handler_t hfp_ag_callback; 101 102 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 103 static int hfp_ag_response_and_hold_active = 0; 104 105 // Subcriber information entries 106 static hfp_phone_number_t * subscriber_numbers = NULL; 107 static int subscriber_numbers_count = 0; 108 109 110 static void hfp_ag_emit_simple_event(uint8_t event_subtype){ 111 uint8_t event[3]; 112 event[0] = HCI_EVENT_HFP_META; 113 event[1] = sizeof(event) - 2; 114 event[2] = event_subtype; 115 if (!hfp_ag_callback) return; 116 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 117 } 118 119 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 120 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 121 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 122 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 123 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 124 } 125 return hfp_connection->ag_indicators_nr; 126 } 127 128 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 129 // TODO: save only value, and value changed in the hfp_connection? 130 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 131 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 132 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 133 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 134 } 135 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 136 } 137 138 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 139 int i; 140 for (i = 0; i < hfp_ag_indicators_nr; i++){ 141 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 142 return &hfp_ag_indicators[i]; 143 } 144 } 145 return NULL; 146 } 147 148 static int get_ag_indicator_index_for_name(const char * name){ 149 int i; 150 for (i = 0; i < hfp_ag_indicators_nr; i++){ 151 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 152 return i; 153 } 154 } 155 return -1; 156 } 157 158 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 159 btstack_linked_list_iterator_t it; 160 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 161 while (btstack_linked_list_iterator_has_next(&it)){ 162 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 163 if (hfp_connection->acl_handle != handle) continue; 164 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 165 return hfp_connection; 166 } 167 return NULL; 168 } 169 170 static int use_in_band_tone(void){ 171 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 172 } 173 174 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 175 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 176 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 177 return hf && ag; 178 } 179 180 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 181 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 182 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 183 return hf && ag; 184 } 185 186 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 187 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 188 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 189 return hf && ag; 190 } 191 192 /* unsolicited responses */ 193 194 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 195 char buffer[20]; 196 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 197 return send_str_over_rfcomm(cid, buffer); 198 } 199 200 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 201 char buffer[40]; 202 sprintf(buffer, "\r\n%s:%d\r\n\r\nOK\r\n", HFP_SUPPORTED_FEATURES, hfp_supported_features); 203 return send_str_over_rfcomm(cid, buffer); 204 } 205 206 static int hfp_ag_send_ok(uint16_t cid){ 207 char buffer[10]; 208 sprintf(buffer, "\r\nOK\r\n"); 209 return send_str_over_rfcomm(cid, buffer); 210 } 211 212 static int hfp_ag_send_ring(uint16_t cid){ 213 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 214 } 215 216 static int hfp_ag_send_clip(uint16_t cid){ 217 char buffer[50]; 218 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 219 return send_str_over_rfcomm(cid, buffer); 220 } 221 222 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 223 char buffer[50]; 224 sprintf(buffer, "\r\n%s: ,\"%s\",%u, , \r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 225 return send_str_over_rfcomm(cid, buffer); 226 } 227 228 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 229 char buffer[50]; 230 sprintf(buffer, "\r\n%s: %s\r\n", HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 231 return send_str_over_rfcomm(cid, buffer); 232 } 233 234 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 235 char buffer[50]; 236 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 237 return send_str_over_rfcomm(cid, buffer); 238 } 239 240 static int hfp_ag_send_error(uint16_t cid){ 241 char buffer[10]; 242 sprintf(buffer, "\r\nERROR\r\n"); 243 return send_str_over_rfcomm(cid, buffer); 244 } 245 246 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 247 char buffer[20]; 248 sprintf(buffer, "\r\n%s=%d\r\n", HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 249 return send_str_over_rfcomm(cid, buffer); 250 } 251 252 // get size for indicator string 253 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 254 // template: ("$NAME",($MIN,$MAX)) 255 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 256 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 257 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 258 } 259 260 // store indicator 261 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer){ 262 sprintf((char *) buffer, "(\"%s\",(%d,%d)),", 263 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 264 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 265 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 266 } 267 268 // structure: header [indicator [comma indicator]] footer 269 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 270 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 271 if (!num_indicators) return 2; 272 return 3 + ((num_indicators-1) * 2); 273 } 274 275 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 276 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 277 if (index == 0) { 278 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 279 } 280 index--; 281 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 282 int indicator_index = index >> 1; 283 if ((index & 1) == 0){ 284 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 285 } 286 if (indicator_index == (num_indicators - 1)){ 287 return 8; // "\r\n\r\nOK\r\n" 288 } 289 return 1; // comma 290 } 291 292 static void hgp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer){ 293 if (index == 0){ 294 *buffer++ = '\r'; 295 *buffer++ = '\n'; 296 int len = strlen(HFP_INDICATOR); 297 (void)memcpy(buffer, HFP_INDICATOR, len); 298 buffer += len; 299 *buffer++ = ':'; 300 return; 301 } 302 index--; 303 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 304 int indicator_index = index >> 1; 305 if ((index & 1) == 0){ 306 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer); 307 return; 308 } 309 if (indicator_index == (num_indicators-1)){ 310 (void)memcpy(buffer, "\r\n\r\nOK\r\n", 8); 311 return; 312 } 313 *buffer = ','; 314 } 315 316 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 317 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 318 int i; 319 int offset = 0; 320 for (i = 0; i < (hfp_generic_status_indicators_nr-1); i++) { 321 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 322 } 323 if (i < hfp_generic_status_indicators_nr){ 324 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 325 } 326 return offset; 327 } 328 329 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 330 if (buffer_size < (hfp_generic_status_indicators_nr * 3)) return 0; 331 int i; 332 int offset = 0; 333 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 334 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); 335 } 336 return offset; 337 } 338 339 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 340 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 341 int i; 342 int offset = 0; 343 for (i = 0; i < (hfp_ag_indicators_nr-1); i++) { 344 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 345 } 346 if (i<hfp_ag_indicators_nr){ 347 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 348 } 349 return offset; 350 } 351 352 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 353 if (buffer_size < (hfp_ag_call_hold_services_nr * 3)) return 0; 354 int i; 355 int offset = snprintf(buffer, buffer_size, "("); 356 for (i = 0; i < (hfp_ag_call_hold_services_nr-1); i++) { 357 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 358 } 359 if (i<hfp_ag_call_hold_services_nr){ 360 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 361 } 362 return offset; 363 } 364 365 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 366 int start_segment, int num_segments, 367 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 368 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer)){ 369 370 // assumes: can send now == true 371 // assumes: num segments > 0 372 // assumes: individual segments are smaller than MTU 373 rfcomm_reserve_packet_buffer(); 374 int mtu = rfcomm_get_max_frame_size(cid); 375 uint8_t * data = rfcomm_get_outgoing_buffer(); 376 int offset = 0; 377 int segment = start_segment; 378 while (segment < num_segments){ 379 int segment_len = get_segment_len(hfp_connection, segment); 380 if ((offset + segment_len) > mtu) break; 381 // append segement 382 store_segment(hfp_connection, segment, data+offset); 383 offset += segment_len; 384 segment++; 385 } 386 rfcomm_send_prepared(cid, offset); 387 return segment; 388 } 389 390 // returns next segment to store 391 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 392 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 393 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 394 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 395 } 396 397 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 398 char buffer[40]; 399 const int size = sizeof(buffer); 400 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 401 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 402 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 403 return send_str_over_rfcomm(cid, buffer); 404 } 405 406 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 407 char buffer[40]; 408 const int size = sizeof(buffer); 409 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 410 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 411 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 412 return send_str_over_rfcomm(cid, buffer); 413 } 414 415 416 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 417 return hfp_ag_send_ok(cid); 418 } 419 420 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 421 char buffer[40]; 422 const int size = sizeof(buffer); 423 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 424 offset += hfp_hf_indicators_join(buffer+offset, size-offset-10); 425 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 426 return send_str_over_rfcomm(cid, buffer); 427 } 428 429 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 430 char buffer[40]; 431 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 432 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 433 return send_str_over_rfcomm(cid, buffer); 434 } 435 436 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 437 char buffer[20]; 438 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 439 return send_str_over_rfcomm(cid, buffer); 440 } 441 442 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 443 char buffer[41]; 444 if (strlen(op.name) == 0){ 445 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 446 } else { 447 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 448 offset += snprintf(buffer+offset, 16, "%s", op.name); 449 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 450 } 451 return send_str_over_rfcomm(cid, buffer); 452 } 453 454 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 455 char buffer[30]; 456 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 457 return send_str_over_rfcomm(cid, buffer); 458 } 459 460 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 461 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 462 } 463 464 static int hfp_ag_send_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 465 return hfp_ag_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 466 } 467 468 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 469 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 470 } 471 472 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 473 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 474 } 475 476 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 477 return hfp_ag_send_cmd_with_int(cid, HFP_RESPONSE_AND_HOLD, state); 478 } 479 480 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 481 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 482 483 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 484 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 485 return HFP_CODEC_MSBC; 486 } 487 } 488 return HFP_CODEC_CVSD; 489 } 490 491 /* state machines */ 492 493 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 494 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4)); 495 } 496 497 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 498 /* events ( == commands): 499 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 500 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 501 hf_trigger_codec_connection_setup == received BCC 502 ag_trigger_codec_connection_setup == received from AG to send BCS 503 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 504 */ 505 506 switch (hfp_connection->codecs_state){ 507 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 508 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 509 break; 510 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 511 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 512 break; 513 default: 514 break; 515 } 516 517 switch (hfp_connection->command){ 518 case HFP_CMD_AVAILABLE_CODECS: 519 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 520 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 521 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 522 return 1; 523 } 524 525 switch (hfp_connection->codecs_state){ 526 case HFP_CODECS_AG_SENT_COMMON_CODEC: 527 case HFP_CODECS_EXCHANGED: 528 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 529 break; 530 default: 531 break; 532 } 533 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 534 return 1; 535 536 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 537 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 538 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 539 return 1; 540 541 case HFP_CMD_AG_SEND_COMMON_CODEC: 542 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 543 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 544 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 545 return 1; 546 547 case HFP_CMD_HF_CONFIRMED_CODEC: 548 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 549 hfp_connection->codecs_state = HFP_CODECS_ERROR; 550 hfp_ag_send_error(hfp_connection->rfcomm_cid); 551 return 1; 552 } 553 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 554 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 555 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 556 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 557 // now, pick link settings 558 559 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 560 return 1; 561 default: 562 break; 563 } 564 return 0; 565 } 566 567 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 568 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 569 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 570 571 // if active call exist, set per-hfp_connection state active, too (when audio is on) 572 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 573 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 574 } 575 // if AG is ringing, also start ringing on the HF 576 if ((hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS) && 577 (hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS)){ 578 hfp_ag_hf_start_ringing(hfp_connection); 579 } 580 } 581 582 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 583 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 584 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 585 int sent = 0; 586 switch(hfp_connection->command){ 587 case HFP_CMD_SUPPORTED_FEATURES: 588 switch(hfp_connection->state){ 589 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 590 case HFP_EXCHANGE_SUPPORTED_FEATURES: 591 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 592 if (has_codec_negotiation_feature(hfp_connection)){ 593 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 594 } else { 595 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 596 } 597 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 598 return 1; 599 default: 600 break; 601 } 602 break; 603 case HFP_CMD_AVAILABLE_CODECS: 604 sent = codecs_exchange_state_machine(hfp_connection); 605 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 606 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 607 } 608 return sent; 609 610 case HFP_CMD_RETRIEVE_AG_INDICATORS: 611 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 612 // HF requested AG Indicators and we did expect it 613 hfp_connection->send_ag_indicators_segment = 0; 614 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 615 // continue below in state switch 616 } 617 break; 618 619 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 620 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 621 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 622 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 623 return 1; 624 625 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 626 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 627 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 628 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 629 } else if (has_hf_indicators_feature(hfp_connection)){ 630 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 631 } else { 632 hfp_ag_slc_established(hfp_connection); 633 } 634 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 635 return 1; 636 637 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 638 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 639 if (has_hf_indicators_feature(hfp_connection)){ 640 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 641 } 642 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 643 if (!has_hf_indicators_feature(hfp_connection)){ 644 hfp_ag_slc_established(hfp_connection); 645 } 646 return 1; 647 648 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 649 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 650 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 651 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 652 return 1; 653 654 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 655 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 656 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 657 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 658 return 1; 659 660 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 661 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 662 hfp_ag_slc_established(hfp_connection); 663 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 664 return 1; 665 default: 666 break; 667 } 668 669 switch (hfp_connection->state){ 670 case HFP_RETRIEVE_INDICATORS: { 671 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 672 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 673 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 674 if (next_segment < num_segments){ 675 // prepare sending of next segment 676 hfp_connection->send_ag_indicators_segment = next_segment; 677 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 678 } else { 679 // done, go to next state 680 hfp_connection->send_ag_indicators_segment = 0; 681 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 682 } 683 return 1; 684 } 685 default: 686 break; 687 } 688 return 0; 689 } 690 691 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 692 int sent = codecs_exchange_state_machine(hfp_connection); 693 if (sent) return 1; 694 695 switch(hfp_connection->command){ 696 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 697 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 698 hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 699 return 1; 700 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 701 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 702 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 703 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 704 hfp_ag_setup_audio_connection(hfp_connection); 705 } else { 706 hfp_ag_send_error(hfp_connection->rfcomm_cid); 707 } 708 return 1; 709 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 710 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 711 return 1; 712 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 713 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 714 return 1; 715 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 716 if (hfp_connection->network_operator.format != 0){ 717 hfp_ag_send_error(hfp_connection->rfcomm_cid); 718 } else { 719 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 720 } 721 return 1; 722 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 723 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 724 return 1; 725 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 726 if (hfp_connection->extended_audio_gateway_error){ 727 hfp_connection->extended_audio_gateway_error = 0; 728 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 729 return 1; 730 } 731 break; 732 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 733 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 734 return 1; 735 default: 736 break; 737 } 738 return 0; 739 } 740 741 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 742 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 743 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 744 745 746 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 747 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 748 hfp_connection->release_audio_connection = 0; 749 gap_disconnect(hfp_connection->sco_handle); 750 return 1; 751 } 752 753 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 754 755 // run codecs exchange 756 int sent = codecs_exchange_state_machine(hfp_connection); 757 if (sent) return 1; 758 759 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 760 if (hfp_connection->establish_audio_connection){ 761 hfp_connection->state = HFP_W4_SCO_CONNECTED; 762 hfp_connection->establish_audio_connection = 0; 763 hfp_setup_synchronous_connection(hfp_connection); 764 return 1; 765 } 766 return 0; 767 } 768 769 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 770 btstack_linked_list_iterator_t it; 771 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 772 773 while (btstack_linked_list_iterator_has_next(&it)){ 774 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 775 if ( & hfp_connection->hfp_timeout == ts) { 776 return hfp_connection; 777 } 778 } 779 return NULL; 780 } 781 782 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 783 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 784 if (!hfp_connection) return; 785 786 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 787 hfp_connection->ag_ring = 1; 788 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 789 790 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 791 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 792 793 hfp_ag_run_for_context(hfp_connection); 794 } 795 796 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 797 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 798 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 799 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 800 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 801 } 802 803 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 804 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 805 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 806 } 807 808 // 809 // transitition implementations for hfp_ag_call_state_machine 810 // 811 812 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 813 if (use_in_band_tone()){ 814 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 815 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 816 } else { 817 hfp_timeout_start(hfp_connection); 818 hfp_connection->ag_ring = 1; 819 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 820 hfp_connection->call_state = HFP_CALL_RINGING; 821 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 822 } 823 } 824 825 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 826 hfp_connection->ag_ring = 0; 827 hfp_connection->ag_send_clip = 0; 828 hfp_timeout_stop(hfp_connection); 829 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 830 } 831 832 static void hfp_ag_trigger_incoming_call(void){ 833 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 834 if (indicator_index < 0) return; 835 836 btstack_linked_list_iterator_t it; 837 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 838 while (btstack_linked_list_iterator_has_next(&it)){ 839 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 840 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 841 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 842 if (hfp_connection->call_state == HFP_CALL_IDLE){ 843 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 844 hfp_ag_hf_start_ringing(hfp_connection); 845 } 846 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 847 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 848 } 849 hfp_ag_run_for_context(hfp_connection); 850 } 851 } 852 853 static void hfp_ag_transfer_callsetup_state(void){ 854 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 855 if (indicator_index < 0) return; 856 857 btstack_linked_list_iterator_t it; 858 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 859 while (btstack_linked_list_iterator_has_next(&it)){ 860 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 861 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 862 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 863 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 864 hfp_ag_run_for_context(hfp_connection); 865 } 866 } 867 868 static void hfp_ag_transfer_call_state(void){ 869 int indicator_index = get_ag_indicator_index_for_name("call"); 870 if (indicator_index < 0) return; 871 872 btstack_linked_list_iterator_t it; 873 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 874 while (btstack_linked_list_iterator_has_next(&it)){ 875 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 876 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 877 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 878 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 879 hfp_ag_run_for_context(hfp_connection); 880 } 881 } 882 883 static void hfp_ag_transfer_callheld_state(void){ 884 int indicator_index = get_ag_indicator_index_for_name("callheld"); 885 if (indicator_index < 0) return; 886 887 btstack_linked_list_iterator_t it; 888 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 889 while (btstack_linked_list_iterator_has_next(&it)){ 890 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 891 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 892 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 893 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 894 hfp_ag_run_for_context(hfp_connection); 895 } 896 } 897 898 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 899 900 int call_indicator_index = get_ag_indicator_index_for_name("call"); 901 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 902 903 btstack_linked_list_iterator_t it; 904 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 905 while (btstack_linked_list_iterator_has_next(&it)){ 906 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 907 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 908 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 909 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 910 911 hfp_ag_hf_stop_ringing(hfp_connection); 912 if (hfp_connection == source){ 913 914 if (use_in_band_tone()){ 915 hfp_connection->call_state = HFP_CALL_ACTIVE; 916 } else { 917 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 918 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 919 } 920 921 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 922 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 923 924 } else { 925 hfp_connection->call_state = HFP_CALL_IDLE; 926 } 927 hfp_ag_run_for_context(hfp_connection); 928 } 929 } 930 931 static void hfp_ag_ag_accept_call(void){ 932 933 int call_indicator_index = get_ag_indicator_index_for_name("call"); 934 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 935 936 btstack_linked_list_iterator_t it; 937 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 938 while (btstack_linked_list_iterator_has_next(&it)){ 939 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 940 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 941 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 942 943 hfp_ag_hf_stop_ringing(hfp_connection); 944 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 945 946 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 947 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 948 949 hfp_ag_run_for_context(hfp_connection); 950 break; // only single 951 } 952 } 953 954 static void hfp_ag_trigger_reject_call(void){ 955 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 956 btstack_linked_list_iterator_t it; 957 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 958 while (btstack_linked_list_iterator_has_next(&it)){ 959 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 960 if (connection->local_role != HFP_ROLE_AG) continue; 961 if ((connection->call_state != HFP_CALL_RINGING) && 962 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 963 hfp_ag_hf_stop_ringing(connection); 964 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 965 connection->call_state = HFP_CALL_IDLE; 966 hfp_ag_run_for_context(connection); 967 } 968 } 969 970 static void hfp_ag_trigger_terminate_call(void){ 971 int call_indicator_index = get_ag_indicator_index_for_name("call"); 972 973 btstack_linked_list_iterator_t it; 974 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 975 while (btstack_linked_list_iterator_has_next(&it)){ 976 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 977 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 978 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 979 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 980 hfp_connection->call_state = HFP_CALL_IDLE; 981 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 982 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 983 hfp_connection->release_audio_connection = 1; 984 } 985 hfp_ag_run_for_context(hfp_connection); 986 } 987 hfp_ag_emit_simple_event(HFP_SUBEVENT_CALL_TERMINATED); 988 } 989 990 static void hfp_ag_set_callsetup_indicator(void){ 991 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 992 if (!indicator){ 993 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 994 return; 995 }; 996 indicator->status = hfp_gsm_callsetup_status(); 997 } 998 999 static void hfp_ag_set_callheld_indicator(void){ 1000 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1001 if (!indicator){ 1002 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1003 return; 1004 }; 1005 indicator->status = hfp_gsm_callheld_status(); 1006 } 1007 1008 static void hfp_ag_set_call_indicator(void){ 1009 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1010 if (!indicator){ 1011 log_error("hfp_ag_set_call_state: call indicator is missing"); 1012 return; 1013 }; 1014 indicator->status = hfp_gsm_call_status(); 1015 } 1016 1017 static void hfp_ag_stop_ringing(void){ 1018 btstack_linked_list_iterator_t it; 1019 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1020 while (btstack_linked_list_iterator_has_next(&it)){ 1021 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1022 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1023 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1024 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1025 hfp_ag_hf_stop_ringing(hfp_connection); 1026 } 1027 } 1028 1029 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1030 btstack_linked_list_iterator_t it; 1031 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1032 while (btstack_linked_list_iterator_has_next(&it)){ 1033 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1034 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1035 if (hfp_connection->call_state == call_state) return hfp_connection; 1036 } 1037 return NULL; 1038 } 1039 1040 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1041 btstack_linked_list_iterator_t it; 1042 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1043 while (btstack_linked_list_iterator_has_next(&it)){ 1044 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1045 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1046 hfp_connection->send_response_and_hold_status = state + 1; 1047 } 1048 } 1049 1050 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1051 int indicator_index; 1052 switch (hfp_connection->call_state){ 1053 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1054 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1055 // we got event: audio hfp_connection established 1056 hfp_timeout_start(hfp_connection); 1057 hfp_connection->ag_ring = 1; 1058 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1059 hfp_connection->call_state = HFP_CALL_RINGING; 1060 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1061 break; 1062 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1063 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1064 // we got event: audio hfp_connection established 1065 hfp_connection->call_state = HFP_CALL_ACTIVE; 1066 break; 1067 case HFP_CALL_W2_SEND_CALL_WAITING: 1068 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1069 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1070 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1071 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1072 break; 1073 default: 1074 break; 1075 } 1076 return 0; 1077 } 1078 1079 // functions extracted from hfp_ag_call_sm below 1080 static void hfp_ag_handle_reject_incoming_call(void){ 1081 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1082 if (!hfp_connection){ 1083 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1084 return; 1085 } 1086 1087 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1088 hfp_connection->call_state = HFP_CALL_IDLE; 1089 hfp_connection->send_error = 1; 1090 hfp_ag_run_for_context(hfp_connection); 1091 } 1092 1093 // hfp_connection is used to identify originating HF 1094 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1095 int indicator_index; 1096 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1097 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1098 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1099 1100 switch (event){ 1101 case HFP_AG_INCOMING_CALL: 1102 switch (hfp_gsm_call_status()){ 1103 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1104 switch (hfp_gsm_callsetup_status()){ 1105 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1106 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1107 hfp_ag_set_callsetup_indicator(); 1108 hfp_ag_trigger_incoming_call(); 1109 log_info("AG rings"); 1110 break; 1111 default: 1112 break; 1113 } 1114 break; 1115 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1116 switch (hfp_gsm_callsetup_status()){ 1117 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1118 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1119 hfp_ag_set_callsetup_indicator(); 1120 hfp_ag_trigger_incoming_call(); 1121 log_info("AG call waiting"); 1122 break; 1123 default: 1124 break; 1125 } 1126 break; 1127 default: 1128 break; 1129 } 1130 break; 1131 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1132 switch (hfp_gsm_call_status()){ 1133 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1134 switch (hfp_gsm_callsetup_status()){ 1135 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1136 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1137 hfp_ag_set_call_indicator(); 1138 hfp_ag_set_callsetup_indicator(); 1139 hfp_ag_ag_accept_call(); 1140 log_info("AG answers call, accept call by GSM"); 1141 break; 1142 default: 1143 break; 1144 } 1145 break; 1146 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1147 switch (hfp_gsm_callsetup_status()){ 1148 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1149 log_info("AG: current call is placed on hold, incoming call gets active"); 1150 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1151 hfp_ag_set_callsetup_indicator(); 1152 hfp_ag_set_callheld_indicator(); 1153 hfp_ag_transfer_callsetup_state(); 1154 hfp_ag_transfer_callheld_state(); 1155 break; 1156 default: 1157 break; 1158 } 1159 break; 1160 default: 1161 break; 1162 } 1163 break; 1164 1165 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1166 switch (hfp_gsm_call_status()){ 1167 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1168 switch (hfp_gsm_callheld_status()){ 1169 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1170 log_info("AG: joining held call with active call"); 1171 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1172 hfp_ag_set_callheld_indicator(); 1173 hfp_ag_transfer_callheld_state(); 1174 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1175 break; 1176 default: 1177 break; 1178 } 1179 break; 1180 default: 1181 break; 1182 } 1183 break; 1184 1185 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1186 switch (hfp_gsm_call_status()){ 1187 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1188 switch (hfp_gsm_callsetup_status()){ 1189 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1190 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1191 hfp_ag_set_callsetup_indicator(); 1192 hfp_ag_set_call_indicator(); 1193 hfp_ag_hf_accept_call(hfp_connection); 1194 hfp_connection->ok_pending = 1; 1195 log_info("HF answers call, accept call by GSM"); 1196 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1197 break; 1198 default: 1199 break; 1200 } 1201 break; 1202 default: 1203 break; 1204 } 1205 break; 1206 1207 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1208 switch (hfp_gsm_call_status()){ 1209 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1210 switch (hfp_gsm_callsetup_status()){ 1211 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1212 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1213 hfp_ag_response_and_hold_active = 1; 1214 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1215 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1216 // as with regualr call 1217 hfp_ag_set_call_indicator(); 1218 hfp_ag_set_callsetup_indicator(); 1219 hfp_ag_ag_accept_call(); 1220 log_info("AG response and hold - hold by AG"); 1221 break; 1222 default: 1223 break; 1224 } 1225 break; 1226 default: 1227 break; 1228 } 1229 break; 1230 1231 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1232 switch (hfp_gsm_call_status()){ 1233 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1234 switch (hfp_gsm_callsetup_status()){ 1235 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1236 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1237 hfp_ag_response_and_hold_active = 1; 1238 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1239 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1240 // as with regualr call 1241 hfp_ag_set_call_indicator(); 1242 hfp_ag_set_callsetup_indicator(); 1243 hfp_ag_hf_accept_call(hfp_connection); 1244 log_info("AG response and hold - hold by HF"); 1245 break; 1246 default: 1247 break; 1248 } 1249 break; 1250 default: 1251 break; 1252 } 1253 break; 1254 1255 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1256 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1257 if (!hfp_ag_response_and_hold_active) break; 1258 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1259 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1260 hfp_ag_response_and_hold_active = 0; 1261 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1262 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1263 log_info("Held Call accepted and active"); 1264 break; 1265 1266 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1267 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1268 if (!hfp_ag_response_and_hold_active) break; 1269 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1270 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1271 hfp_ag_response_and_hold_active = 0; 1272 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1273 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1274 // from terminate by ag 1275 hfp_ag_set_call_indicator(); 1276 hfp_ag_trigger_terminate_call(); 1277 break; 1278 1279 case HFP_AG_TERMINATE_CALL_BY_HF: 1280 switch (hfp_gsm_call_status()){ 1281 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1282 switch (hfp_gsm_callsetup_status()){ 1283 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1284 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1285 hfp_ag_set_callsetup_indicator(); 1286 hfp_ag_transfer_callsetup_state(); 1287 hfp_ag_trigger_reject_call(); 1288 log_info("HF Rejected Incoming call, AG terminate call"); 1289 break; 1290 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1291 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1292 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1293 hfp_ag_set_callsetup_indicator(); 1294 hfp_ag_transfer_callsetup_state(); 1295 log_info("AG terminate outgoing call process"); 1296 break; 1297 default: 1298 break; 1299 } 1300 break; 1301 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1302 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1303 hfp_ag_set_call_indicator(); 1304 hfp_ag_transfer_call_state(); 1305 hfp_connection->call_state = HFP_CALL_IDLE; 1306 log_info("AG terminate call"); 1307 break; 1308 default: 1309 break; 1310 } 1311 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1312 break; 1313 1314 case HFP_AG_TERMINATE_CALL_BY_AG: 1315 switch (hfp_gsm_call_status()){ 1316 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1317 switch (hfp_gsm_callsetup_status()){ 1318 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1319 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1320 hfp_ag_set_callsetup_indicator(); 1321 hfp_ag_trigger_reject_call(); 1322 log_info("AG Rejected Incoming call, AG terminate call"); 1323 break; 1324 default: 1325 break; 1326 } 1327 break; 1328 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1329 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1330 hfp_ag_set_callsetup_indicator(); 1331 hfp_ag_set_call_indicator(); 1332 hfp_ag_trigger_terminate_call(); 1333 log_info("AG terminate call"); 1334 break; 1335 default: 1336 break; 1337 } 1338 break; 1339 case HFP_AG_CALL_DROPPED: 1340 switch (hfp_gsm_call_status()){ 1341 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1342 switch (hfp_gsm_callsetup_status()){ 1343 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1344 hfp_ag_stop_ringing(); 1345 log_info("Incoming call interrupted"); 1346 break; 1347 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1348 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1349 log_info("Outgoing call interrupted\n"); 1350 log_info("AG notify call dropped\n"); 1351 break; 1352 default: 1353 break; 1354 } 1355 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1356 hfp_ag_set_callsetup_indicator(); 1357 hfp_ag_transfer_callsetup_state(); 1358 hfp_ag_trigger_terminate_call(); 1359 break; 1360 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1361 if (hfp_ag_response_and_hold_active) { 1362 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1363 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1364 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1365 } 1366 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1367 hfp_ag_set_callsetup_indicator(); 1368 hfp_ag_set_call_indicator(); 1369 hfp_ag_trigger_terminate_call(); 1370 log_info("AG notify call dropped"); 1371 break; 1372 default: 1373 break; 1374 } 1375 break; 1376 1377 case HFP_AG_OUTGOING_CALL_INITIATED: 1378 // directly reject call if number of free slots is exceeded 1379 if (!hfp_gsm_call_possible()){ 1380 hfp_connection->send_error = 1; 1381 hfp_ag_run_for_context(hfp_connection); 1382 break; 1383 } 1384 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1385 1386 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1387 1388 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1389 break; 1390 1391 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1392 // directly reject call if number of free slots is exceeded 1393 if (!hfp_gsm_call_possible()){ 1394 hfp_connection->send_error = 1; 1395 hfp_ag_run_for_context(hfp_connection); 1396 break; 1397 } 1398 1399 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1400 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1401 1402 log_info("Redial last number"); 1403 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1404 1405 if (strlen(last_dialed_number) > 0){ 1406 log_info("Last number exists: accept call"); 1407 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1408 } else { 1409 log_info("log_infoLast number missing: reject call"); 1410 hfp_ag_handle_reject_incoming_call(); 1411 } 1412 break; 1413 } 1414 case HFP_AG_OUTGOING_CALL_REJECTED: 1415 hfp_ag_handle_reject_incoming_call(); 1416 break; 1417 1418 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1419 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1420 if (!hfp_connection){ 1421 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1422 break; 1423 } 1424 1425 hfp_connection->ok_pending = 1; 1426 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1427 1428 // trigger callsetup to be 1429 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1430 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1431 1432 hfp_ag_set_callsetup_indicator(); 1433 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1434 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1435 1436 // put current call on hold if active 1437 if (put_call_on_hold){ 1438 log_info("AG putting current call on hold for new outgoing calllog_info"); 1439 hfp_ag_set_callheld_indicator(); 1440 indicator_index = get_ag_indicator_index_for_name("callheld"); 1441 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1442 } 1443 1444 // start audio if needed 1445 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1446 break; 1447 } 1448 case HFP_AG_OUTGOING_CALL_RINGING: 1449 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1450 if (!hfp_connection){ 1451 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1452 break; 1453 } 1454 1455 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1456 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1457 hfp_ag_set_callsetup_indicator(); 1458 hfp_ag_transfer_callsetup_state(); 1459 break; 1460 1461 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1462 // get outgoing call 1463 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1464 if (!hfp_connection){ 1465 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1466 } 1467 if (!hfp_connection){ 1468 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1469 break; 1470 } 1471 1472 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1473 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1474 hfp_connection->call_state = HFP_CALL_ACTIVE; 1475 hfp_ag_set_callsetup_indicator(); 1476 hfp_ag_set_call_indicator(); 1477 hfp_ag_transfer_call_state(); 1478 hfp_ag_transfer_callsetup_state(); 1479 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1480 hfp_ag_set_callheld_indicator(); 1481 hfp_ag_transfer_callheld_state(); 1482 } 1483 break; 1484 } 1485 1486 case HFP_AG_CALL_HOLD_USER_BUSY: 1487 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1488 hfp_ag_set_callsetup_indicator(); 1489 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1490 hfp_connection->call_state = HFP_CALL_ACTIVE; 1491 log_info("AG: Call Waiting, User Busy"); 1492 break; 1493 1494 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1495 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1496 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1497 1498 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1499 if (call_held || call_setup_in_progress){ 1500 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1501 1502 } 1503 1504 if (call_setup_in_progress){ 1505 log_info("AG: Call Dropped, Accept new call"); 1506 hfp_ag_set_callsetup_indicator(); 1507 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1508 } else { 1509 log_info("AG: Call Dropped, Resume held call"); 1510 } 1511 if (call_held){ 1512 hfp_ag_set_callheld_indicator(); 1513 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1514 } 1515 1516 hfp_connection->call_state = HFP_CALL_ACTIVE; 1517 break; 1518 } 1519 1520 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1521 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1522 // only update if callsetup changed 1523 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1524 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1525 1526 if (call_setup_in_progress){ 1527 log_info("AG: Call on Hold, Accept new call"); 1528 hfp_ag_set_callsetup_indicator(); 1529 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1530 } else { 1531 log_info("AG: Swap calls"); 1532 } 1533 1534 hfp_ag_set_callheld_indicator(); 1535 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1536 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1537 hfp_connection->call_state = HFP_CALL_ACTIVE; 1538 break; 1539 } 1540 1541 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1542 // Adds a held call to the conversation. 1543 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1544 log_info("AG: Join 3-way-call"); 1545 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1546 hfp_ag_set_callheld_indicator(); 1547 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1548 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1549 } 1550 hfp_connection->call_state = HFP_CALL_ACTIVE; 1551 break; 1552 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1553 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1554 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1555 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1556 hfp_ag_set_call_indicator(); 1557 hfp_ag_set_callheld_indicator(); 1558 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1559 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1560 hfp_connection->call_state = HFP_CALL_IDLE; 1561 break; 1562 1563 default: 1564 break; 1565 } 1566 1567 1568 } 1569 1570 1571 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1572 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1573 if (!active_call) return; 1574 1575 int idx = active_call->index; 1576 hfp_enhanced_call_dir_t dir = active_call->direction; 1577 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1578 hfp_enhanced_call_mode_t mode = active_call->mode; 1579 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1580 uint8_t type = active_call->clip_type; 1581 char * number = active_call->clip_number; 1582 1583 char buffer[100]; 1584 // TODO: check length of a buffer, to fit the MTU 1585 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1586 if (number){ 1587 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1588 } 1589 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1590 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, 1591 mode, mpty, type, number); 1592 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1593 } 1594 1595 1596 // sends pending command, returns if command was sent 1597 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1598 1599 if (hfp_connection->send_status_of_current_calls){ 1600 hfp_connection->ok_pending = 0; 1601 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1602 hfp_connection->next_call_index++; 1603 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1604 return 1; 1605 } else { 1606 // TODO: this code should be removed. check a) before setting send_status_of_current_calls, or b) right before hfp_ag_send_call_status above 1607 hfp_connection->next_call_index = 0; 1608 hfp_connection->ok_pending = 1; 1609 hfp_connection->send_status_of_current_calls = 0; 1610 } 1611 } 1612 1613 if (hfp_connection->ag_notify_incoming_call_waiting){ 1614 hfp_connection->ag_notify_incoming_call_waiting = 0; 1615 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1616 return 1; 1617 } 1618 1619 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1620 hfp_connection->ok_pending = 0; 1621 hfp_connection->send_error = 0; 1622 hfp_connection->command = HFP_CMD_NONE; 1623 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1624 return 1; 1625 } 1626 1627 if (hfp_connection->send_error){ 1628 hfp_connection->send_error = 0; 1629 hfp_connection->command = HFP_CMD_NONE; 1630 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1631 return 1; 1632 } 1633 1634 // note: before update AG indicators and ok_pending 1635 if (hfp_connection->send_response_and_hold_status){ 1636 int status = hfp_connection->send_response_and_hold_status - 1; 1637 hfp_connection->send_response_and_hold_status = 0; 1638 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1639 return 1; 1640 } 1641 1642 if (hfp_connection->ok_pending){ 1643 hfp_connection->ok_pending = 0; 1644 hfp_connection->command = HFP_CMD_NONE; 1645 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1646 return 1; 1647 } 1648 1649 // update AG indicators 1650 if (hfp_connection->ag_indicators_status_update_bitmap){ 1651 int i; 1652 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1653 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1654 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1655 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1656 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1657 break; 1658 } 1659 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1660 return 1; 1661 } 1662 } 1663 } 1664 1665 if (hfp_connection->ag_ring){ 1666 hfp_connection->ag_ring = 0; 1667 hfp_connection->command = HFP_CMD_NONE; 1668 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1669 return 1; 1670 } 1671 1672 if (hfp_connection->ag_send_clip){ 1673 hfp_connection->ag_send_clip = 0; 1674 hfp_connection->command = HFP_CMD_NONE; 1675 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1676 return 1; 1677 } 1678 1679 if (hfp_connection->send_phone_number_for_voice_tag){ 1680 hfp_connection->send_phone_number_for_voice_tag = 0; 1681 hfp_connection->command = HFP_CMD_NONE; 1682 hfp_connection->ok_pending = 1; 1683 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1684 return 1; 1685 } 1686 1687 if (hfp_connection->send_subscriber_number){ 1688 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1689 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1690 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1691 } else { 1692 hfp_connection->send_subscriber_number = 0; 1693 hfp_connection->next_subscriber_number_to_send = 0; 1694 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1695 } 1696 hfp_connection->command = HFP_CMD_NONE; 1697 return 1; 1698 } 1699 1700 if (hfp_connection->send_microphone_gain){ 1701 hfp_connection->send_microphone_gain = 0; 1702 hfp_connection->command = HFP_CMD_NONE; 1703 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1704 return 1; 1705 } 1706 1707 if (hfp_connection->send_speaker_gain){ 1708 hfp_connection->send_speaker_gain = 0; 1709 hfp_connection->command = HFP_CMD_NONE; 1710 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1711 return 1; 1712 } 1713 1714 if (hfp_connection->send_ag_status_indicators){ 1715 hfp_connection->send_ag_status_indicators = 0; 1716 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1717 return 1; 1718 } 1719 1720 return 0; 1721 } 1722 1723 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1724 1725 btstack_assert(hfp_connection != NULL); 1726 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1727 1728 // during SDP query, RFCOMM CID is not set 1729 if (hfp_connection->rfcomm_cid == 0) return; 1730 1731 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1732 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1733 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1734 return; 1735 } 1736 1737 int cmd_sent = hfp_ag_send_commands(hfp_connection); 1738 1739 // trigger codec exchange if requested by app 1740 if (hfp_connection->trigger_codec_exchange){ 1741 log_info("trigger codec, command %u, codec state %u", hfp_connection->command, hfp_connection->codecs_state); 1742 } 1743 1744 if (hfp_connection->trigger_codec_exchange && (hfp_connection->command == HFP_CMD_NONE)){ 1745 switch (hfp_connection->codecs_state){ 1746 case HFP_CODECS_IDLE: 1747 case HFP_CODECS_RECEIVED_LIST: 1748 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1749 case HFP_CODECS_ERROR: 1750 hfp_connection->trigger_codec_exchange = 0; 1751 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1752 break; 1753 default: 1754 break; 1755 } 1756 } 1757 1758 if (!cmd_sent){ 1759 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1760 } 1761 1762 if (!cmd_sent){ 1763 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1764 } 1765 1766 if (!cmd_sent){ 1767 cmd_sent = call_setup_state_machine(hfp_connection); 1768 } 1769 1770 if (!cmd_sent){ 1771 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1772 } 1773 1774 if ((hfp_connection->command == HFP_CMD_NONE) && !cmd_sent){ 1775 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1776 switch(hfp_connection->state){ 1777 case HFP_W2_DISCONNECT_RFCOMM: 1778 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1779 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1780 break; 1781 default: 1782 break; 1783 } 1784 } 1785 1786 if (cmd_sent){ 1787 hfp_connection->command = HFP_CMD_NONE; 1788 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1789 } 1790 } 1791 1792 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1793 int i; 1794 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1795 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1796 if (indicator->uuid == number){ 1797 return indicator; 1798 } 1799 } 1800 return NULL; 1801 } 1802 1803 static int hfp_parser_is_end_of_line(uint8_t byte){ 1804 return (byte == '\n') || (byte == '\r'); 1805 } 1806 1807 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1808 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1809 1810 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1811 if (size < 1) return; 1812 1813 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1814 if (!hfp_connection) return; 1815 1816 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 1817 1818 // process messages byte-wise 1819 int pos; 1820 for (pos = 0; pos < size ; pos++){ 1821 hfp_parse(hfp_connection, packet[pos], 0); 1822 1823 // parse until end of line 1824 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1825 1826 hfp_generic_status_indicator_t * indicator; 1827 switch(hfp_connection->command){ 1828 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1829 if (hfp_ag_response_and_hold_active){ 1830 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1831 } 1832 hfp_connection->ok_pending = 1; 1833 break; 1834 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1835 switch(hfp_connection->ag_response_and_hold_action){ 1836 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1837 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1838 break; 1839 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1840 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1841 break; 1842 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1843 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1844 break; 1845 default: 1846 break; 1847 } 1848 hfp_connection->ok_pending = 1; 1849 break; 1850 case HFP_CMD_HF_INDICATOR_STATUS: 1851 hfp_connection->command = HFP_CMD_NONE; 1852 // find indicator by assigned number 1853 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1854 if (!indicator){ 1855 hfp_connection->send_error = 1; 1856 break; 1857 } 1858 switch (indicator->uuid){ 1859 case 1: // enhanced security 1860 if (hfp_connection->parser_indicator_value > 1) { 1861 hfp_connection->send_error = 1; 1862 return; 1863 } 1864 log_info("HF Indicator 'enhanced security' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1865 break; 1866 case 2: // battery level 1867 if (hfp_connection->parser_indicator_value > 100){ 1868 hfp_connection->send_error = 1; 1869 return; 1870 } 1871 log_info("HF Indicator 'battery' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1872 break; 1873 default: 1874 log_info("HF Indicator unknown set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1875 break; 1876 } 1877 hfp_connection->ok_pending = 1; 1878 break; 1879 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1880 // expected by SLC state machine 1881 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1882 hfp_connection->send_ag_indicators_segment = 0; 1883 hfp_connection->send_ag_status_indicators = 1; 1884 break; 1885 case HFP_CMD_LIST_CURRENT_CALLS: 1886 hfp_connection->command = HFP_CMD_NONE; 1887 hfp_connection->next_call_index = 0; 1888 hfp_connection->send_status_of_current_calls = 1; 1889 break; 1890 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1891 if (subscriber_numbers_count == 0){ 1892 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1893 break; 1894 } 1895 hfp_connection->next_subscriber_number_to_send = 0; 1896 hfp_connection->send_subscriber_number = 1; 1897 break; 1898 case HFP_CMD_TRANSMIT_DTMF_CODES: 1899 { 1900 hfp_connection->command = HFP_CMD_NONE; 1901 char buffer[2]; 1902 buffer[0] = (char) hfp_connection->ag_dtmf_code; 1903 buffer[1] = 0; 1904 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 1905 break; 1906 } 1907 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1908 hfp_connection->command = HFP_CMD_NONE; 1909 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1910 break; 1911 case HFP_CMD_TURN_OFF_EC_AND_NR: 1912 hfp_connection->command = HFP_CMD_NONE; 1913 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1914 hfp_connection->ok_pending = 1; 1915 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1916 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1917 } else { 1918 hfp_connection->send_error = 1; 1919 } 1920 break; 1921 case HFP_CMD_CALL_ANSWERED: 1922 hfp_connection->command = HFP_CMD_NONE; 1923 log_info("HFP: ATA"); 1924 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1925 break; 1926 case HFP_CMD_HANG_UP_CALL: 1927 hfp_connection->command = HFP_CMD_NONE; 1928 hfp_connection->ok_pending = 1; 1929 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1930 break; 1931 case HFP_CMD_CALL_HOLD: { 1932 hfp_connection->command = HFP_CMD_NONE; 1933 hfp_connection->ok_pending = 1; 1934 1935 switch (hfp_connection->ag_call_hold_action){ 1936 case 0: 1937 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1938 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1939 break; 1940 case 1: 1941 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1942 // Where both a held and a waiting call exist, the above procedures shall apply to the 1943 // waiting call (i.e., not to the held call) in conflicting situation. 1944 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1945 break; 1946 case 2: 1947 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1948 // Where both a held and a waiting call exist, the above procedures shall apply to the 1949 // waiting call (i.e., not to the held call) in conflicting situation. 1950 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1951 break; 1952 case 3: 1953 // Adds a held call to the conversation. 1954 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1955 break; 1956 case 4: 1957 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1958 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1959 break; 1960 default: 1961 break; 1962 } 1963 hfp_connection->call_index = 0; 1964 break; 1965 } 1966 case HFP_CMD_CALL_PHONE_NUMBER: 1967 hfp_connection->command = HFP_CMD_NONE; 1968 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1969 break; 1970 case HFP_CMD_REDIAL_LAST_NUMBER: 1971 hfp_connection->command = HFP_CMD_NONE; 1972 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1973 break; 1974 case HFP_CMD_ENABLE_CLIP: 1975 hfp_connection->command = HFP_CMD_NONE; 1976 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1977 hfp_connection->ok_pending = 1; 1978 break; 1979 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1980 hfp_connection->command = HFP_CMD_NONE; 1981 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1982 hfp_connection->ok_pending = 1; 1983 break; 1984 case HFP_CMD_SET_SPEAKER_GAIN: 1985 hfp_connection->command = HFP_CMD_NONE; 1986 hfp_connection->ok_pending = 1; 1987 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 1988 break; 1989 case HFP_CMD_SET_MICROPHONE_GAIN: 1990 hfp_connection->command = HFP_CMD_NONE; 1991 hfp_connection->ok_pending = 1; 1992 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 1993 break; 1994 default: 1995 break; 1996 } 1997 } 1998 } 1999 2000 static void hfp_run(void){ 2001 btstack_linked_list_iterator_t it; 2002 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2003 while (btstack_linked_list_iterator_has_next(&it)){ 2004 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2005 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2006 hfp_ag_run_for_context(hfp_connection); 2007 } 2008 } 2009 2010 static void rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2011 switch (packet_type){ 2012 case RFCOMM_DATA_PACKET: 2013 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 2014 break; 2015 case HCI_EVENT_PACKET: 2016 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2017 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2018 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2019 return; 2020 } 2021 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2022 break; 2023 default: 2024 break; 2025 } 2026 2027 hfp_run(); 2028 } 2029 2030 static void hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2031 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2032 2033 // allow for sco established -> ring transition 2034 if (packet_type != HCI_EVENT_PACKET) return; 2035 if (hci_event_packet_get_type(packet) != HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE) return; 2036 hfp_run(); 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 (void)memcpy(hfp_ag_indicators, ag_indicators, 2058 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2059 } 2060 2061 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2062 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2063 hfp_generic_status_indicators_nr = hf_indicators_nr; 2064 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2065 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2066 } 2067 2068 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2069 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2070 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2071 call_hold_services_nr * sizeof(char *)); 2072 } 2073 2074 2075 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2076 2077 hfp_init(); 2078 2079 hci_event_callback_registration.callback = &hci_event_packet_handler; 2080 hci_add_event_handler(&hci_event_callback_registration); 2081 2082 rfcomm_register_service(&rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2083 2084 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2085 hfp_set_ag_rfcomm_packet_handler(&rfcomm_packet_handler); 2086 2087 hfp_ag_response_and_hold_active = 0; 2088 subscriber_numbers = NULL; 2089 subscriber_numbers_count = 0; 2090 2091 hfp_gsm_init(); 2092 } 2093 2094 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2095 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2096 } 2097 2098 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2099 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2100 if (!hfp_connection){ 2101 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2102 return; 2103 } 2104 hfp_release_service_level_connection(hfp_connection); 2105 hfp_ag_run_for_context(hfp_connection); 2106 } 2107 2108 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2109 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2110 if (!hfp_connection){ 2111 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2112 return; 2113 } 2114 hfp_connection->extended_audio_gateway_error = 0; 2115 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2116 return; 2117 } 2118 hfp_connection->extended_audio_gateway_error = error; 2119 hfp_ag_run_for_context(hfp_connection); 2120 } 2121 2122 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2123 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2124 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2125 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2126 2127 hfp_connection->establish_audio_connection = 1; 2128 if (!has_codec_negotiation_feature(hfp_connection)){ 2129 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2130 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2131 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2132 // now, pick link settings 2133 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2134 return; 2135 } 2136 2137 hfp_connection->trigger_codec_exchange = 1; 2138 } 2139 2140 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2141 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2142 if (!hfp_connection){ 2143 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2144 return; 2145 } 2146 hfp_connection->trigger_codec_exchange = 0; 2147 hfp_connection->establish_audio_connection = 0; 2148 hfp_ag_setup_audio_connection(hfp_connection); 2149 hfp_ag_run_for_context(hfp_connection); 2150 } 2151 2152 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2153 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2154 if (!hfp_connection){ 2155 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2156 return; 2157 } 2158 hfp_release_audio_connection(hfp_connection); 2159 hfp_ag_run_for_context(hfp_connection); 2160 } 2161 2162 /** 2163 * @brief Enable in-band ring tone 2164 */ 2165 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2166 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2167 return; 2168 } 2169 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2170 2171 btstack_linked_list_iterator_t it; 2172 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2173 while (btstack_linked_list_iterator_has_next(&it)){ 2174 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2175 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2176 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2177 hfp_ag_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->local_role != HFP_ROLE_AG) continue; 2251 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2252 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2253 continue; 2254 } 2255 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2256 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2257 hfp_ag_run_for_context(hfp_connection); 2258 } 2259 } 2260 2261 void hfp_ag_set_registration_status(int status){ 2262 hfp_ag_set_ag_indicator("service", status); 2263 } 2264 2265 void hfp_ag_set_signal_strength(int strength){ 2266 hfp_ag_set_ag_indicator("signal", strength); 2267 } 2268 2269 void hfp_ag_set_roaming_status(int status){ 2270 hfp_ag_set_ag_indicator("roam", status); 2271 } 2272 2273 void hfp_ag_set_battery_level(int level){ 2274 hfp_ag_set_ag_indicator("battchg", level); 2275 } 2276 2277 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2278 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2279 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2280 if (!hfp_connection){ 2281 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2282 return; 2283 } 2284 2285 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2286 log_info("AG cannot acivate voice recognition - not supported by HF"); 2287 return; 2288 } 2289 2290 if (activate){ 2291 hfp_ag_establish_audio_connection(acl_handle); 2292 } 2293 2294 hfp_connection->ag_activate_voice_recognition = activate; 2295 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2296 hfp_ag_run_for_context(hfp_connection); 2297 } 2298 2299 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2300 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2301 if (!hfp_connection){ 2302 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2303 return; 2304 } 2305 if (hfp_connection->microphone_gain != gain){ 2306 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2307 hfp_connection->microphone_gain = gain; 2308 hfp_connection->send_microphone_gain = 1; 2309 } 2310 hfp_ag_run_for_context(hfp_connection); 2311 } 2312 2313 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2314 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2315 if (!hfp_connection){ 2316 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2317 return; 2318 } 2319 if (hfp_connection->speaker_gain != gain){ 2320 hfp_connection->speaker_gain = gain; 2321 hfp_connection->send_speaker_gain = 1; 2322 } 2323 hfp_ag_run_for_context(hfp_connection); 2324 } 2325 2326 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2327 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2328 if (!hfp_connection){ 2329 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2330 return; 2331 } 2332 hfp_ag_set_clip(0, number); 2333 hfp_connection->send_phone_number_for_voice_tag = 1; 2334 } 2335 2336 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2337 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2338 if (!hfp_connection){ 2339 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2340 return; 2341 } 2342 hfp_connection->send_error = 1; 2343 } 2344 2345 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2346 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2347 if (!hfp_connection){ 2348 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2349 return; 2350 } 2351 hfp_connection->ok_pending = 1; 2352 } 2353 2354 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2355 subscriber_numbers = numbers; 2356 subscriber_numbers_count = numbers_count; 2357 } 2358 2359 void hfp_ag_clear_last_dialed_number(void){ 2360 hfp_gsm_clear_last_dialed_number(); 2361 } 2362 2363 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2364 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2365 if (!hfp_connection){ 2366 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2367 return; 2368 } 2369 if (!hfp_connection->call_waiting_notification_enabled) return; 2370 2371 hfp_connection->ag_notify_incoming_call_waiting = 1; 2372 hfp_ag_run_for_context(hfp_connection); 2373 } 2374 2375 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){ 2376 if (!name){ 2377 name = default_hfp_ag_service_name; 2378 } 2379 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2380 2381 /* 2382 * 0x01 – Ability to reject a call 2383 * 0x00 – No ability to reject a call 2384 */ 2385 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2386 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2387 2388 // Construct SupportedFeatures for SDP bitmap: 2389 // 2390 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2391 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2392 // 2393 // Wide band speech (bit 5) requires Codec negotiation 2394 // 2395 uint16_t sdp_features = supported_features & 0x1f; 2396 if (wide_band_speech && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2397 sdp_features |= 1 << 5; 2398 } 2399 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2400 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2401 } 2402 2403 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2404 if (callback == NULL){ 2405 log_error("hfp_ag_register_packet_handler called with NULL callback"); 2406 return; 2407 } 2408 hfp_ag_callback = callback; 2409 hfp_set_ag_callback(callback); 2410 } 2411