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 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection); 110 111 112 static void hfp_ag_emit_simple_event(uint8_t event_subtype){ 113 uint8_t event[3]; 114 event[0] = HCI_EVENT_HFP_META; 115 event[1] = sizeof(event) - 2; 116 event[2] = event_subtype; 117 if (!hfp_ag_callback) return; 118 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 119 } 120 121 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 122 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 123 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 124 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 125 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 126 } 127 return hfp_connection->ag_indicators_nr; 128 } 129 130 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 131 // TODO: save only value, and value changed in the hfp_connection? 132 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 133 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 134 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 135 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 136 } 137 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 138 } 139 140 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 141 int i; 142 for (i = 0; i < hfp_ag_indicators_nr; i++){ 143 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 144 return &hfp_ag_indicators[i]; 145 } 146 } 147 return NULL; 148 } 149 150 static int get_ag_indicator_index_for_name(const char * name){ 151 int i; 152 for (i = 0; i < hfp_ag_indicators_nr; i++){ 153 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 154 return i; 155 } 156 } 157 return -1; 158 } 159 160 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 161 btstack_linked_list_iterator_t it; 162 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 163 while (btstack_linked_list_iterator_has_next(&it)){ 164 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 165 if (hfp_connection->acl_handle != handle) continue; 166 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 167 return hfp_connection; 168 } 169 return NULL; 170 } 171 172 static int use_in_band_tone(void){ 173 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 174 } 175 176 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 177 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 178 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 179 return hf && ag; 180 } 181 182 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 183 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 184 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 185 return hf && ag; 186 } 187 188 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 189 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 190 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 191 return hf && ag; 192 } 193 194 /* unsolicited responses */ 195 196 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 197 char buffer[20]; 198 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 199 return send_str_over_rfcomm(cid, buffer); 200 } 201 202 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 203 char buffer[40]; 204 sprintf(buffer, "\r\n%s:%d\r\n\r\nOK\r\n", HFP_SUPPORTED_FEATURES, hfp_supported_features); 205 return send_str_over_rfcomm(cid, buffer); 206 } 207 208 static int hfp_ag_send_ok(uint16_t cid){ 209 char buffer[10]; 210 sprintf(buffer, "\r\nOK\r\n"); 211 return send_str_over_rfcomm(cid, buffer); 212 } 213 214 static int hfp_ag_send_ring(uint16_t cid){ 215 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 216 } 217 218 static int hfp_ag_send_clip(uint16_t cid){ 219 char buffer[50]; 220 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 221 return send_str_over_rfcomm(cid, buffer); 222 } 223 224 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 225 char buffer[50]; 226 sprintf(buffer, "\r\n%s: ,\"%s\",%u, , \r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 227 return send_str_over_rfcomm(cid, buffer); 228 } 229 230 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 231 char buffer[50]; 232 sprintf(buffer, "\r\n%s: %s\r\n", HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 233 return send_str_over_rfcomm(cid, buffer); 234 } 235 236 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 237 char buffer[50]; 238 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 239 return send_str_over_rfcomm(cid, buffer); 240 } 241 242 static int hfp_ag_send_error(uint16_t cid){ 243 char buffer[10]; 244 sprintf(buffer, "\r\nERROR\r\n"); 245 return send_str_over_rfcomm(cid, buffer); 246 } 247 248 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 249 char buffer[20]; 250 sprintf(buffer, "\r\n%s=%d\r\n", HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 251 return send_str_over_rfcomm(cid, buffer); 252 } 253 254 // get size for indicator string 255 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 256 // template: ("$NAME",($MIN,$MAX)) 257 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 258 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 259 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 260 } 261 262 // store indicator 263 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer){ 264 sprintf((char *) buffer, "(\"%s\",(%d,%d)),", 265 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 266 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 267 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 268 } 269 270 // structure: header [indicator [comma indicator]] footer 271 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 272 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 273 if (!num_indicators) return 2; 274 return 3 + ((num_indicators-1) * 2); 275 } 276 277 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 278 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 279 if (index == 0) { 280 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 281 } 282 index--; 283 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 284 int indicator_index = index >> 1; 285 if ((index & 1) == 0){ 286 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 287 } 288 if (indicator_index == (num_indicators - 1)){ 289 return 8; // "\r\n\r\nOK\r\n" 290 } 291 return 1; // comma 292 } 293 294 static void hgp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer){ 295 if (index == 0){ 296 *buffer++ = '\r'; 297 *buffer++ = '\n'; 298 int len = strlen(HFP_INDICATOR); 299 (void)memcpy(buffer, HFP_INDICATOR, len); 300 buffer += len; 301 *buffer++ = ':'; 302 return; 303 } 304 index--; 305 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 306 int indicator_index = index >> 1; 307 if ((index & 1) == 0){ 308 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer); 309 return; 310 } 311 if (indicator_index == (num_indicators-1)){ 312 (void)memcpy(buffer, "\r\n\r\nOK\r\n", 8); 313 return; 314 } 315 *buffer = ','; 316 } 317 318 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 319 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 320 int i; 321 int offset = 0; 322 for (i = 0; i < (hfp_generic_status_indicators_nr-1); i++) { 323 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 324 } 325 if (i < hfp_generic_status_indicators_nr){ 326 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 327 } 328 return offset; 329 } 330 331 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 332 if (buffer_size < (hfp_generic_status_indicators_nr * 3)) return 0; 333 int i; 334 int offset = 0; 335 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 336 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); 337 } 338 return offset; 339 } 340 341 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 342 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 343 int i; 344 int offset = 0; 345 for (i = 0; i < (hfp_ag_indicators_nr-1); i++) { 346 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 347 } 348 if (i<hfp_ag_indicators_nr){ 349 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 350 } 351 return offset; 352 } 353 354 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 355 if (buffer_size < (hfp_ag_call_hold_services_nr * 3)) return 0; 356 int i; 357 int offset = snprintf(buffer, buffer_size, "("); 358 for (i = 0; i < (hfp_ag_call_hold_services_nr-1); i++) { 359 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 360 } 361 if (i<hfp_ag_call_hold_services_nr){ 362 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 363 } 364 return offset; 365 } 366 367 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 368 int start_segment, int num_segments, 369 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 370 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer)){ 371 372 // assumes: can send now == true 373 // assumes: num segments > 0 374 // assumes: individual segments are smaller than MTU 375 rfcomm_reserve_packet_buffer(); 376 int mtu = rfcomm_get_max_frame_size(cid); 377 uint8_t * data = rfcomm_get_outgoing_buffer(); 378 int offset = 0; 379 int segment = start_segment; 380 while (segment < num_segments){ 381 int segment_len = get_segment_len(hfp_connection, segment); 382 if ((offset + segment_len) > mtu) break; 383 // append segement 384 store_segment(hfp_connection, segment, data+offset); 385 offset += segment_len; 386 segment++; 387 } 388 rfcomm_send_prepared(cid, offset); 389 return segment; 390 } 391 392 // returns next segment to store 393 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 394 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 395 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 396 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 397 } 398 399 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 400 char buffer[40]; 401 const int size = sizeof(buffer); 402 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 403 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 404 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 405 return send_str_over_rfcomm(cid, buffer); 406 } 407 408 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 409 char buffer[40]; 410 const int size = sizeof(buffer); 411 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 412 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 413 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 414 return send_str_over_rfcomm(cid, buffer); 415 } 416 417 418 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 419 return hfp_ag_send_ok(cid); 420 } 421 422 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 423 char buffer[40]; 424 const int size = sizeof(buffer); 425 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 426 offset += hfp_hf_indicators_join(buffer+offset, size-offset-10); 427 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 428 return send_str_over_rfcomm(cid, buffer); 429 } 430 431 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 432 char buffer[40]; 433 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 434 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 435 return send_str_over_rfcomm(cid, buffer); 436 } 437 438 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 439 char buffer[20]; 440 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 441 return send_str_over_rfcomm(cid, buffer); 442 } 443 444 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 445 char buffer[41]; 446 if (strlen(op.name) == 0){ 447 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 448 } else { 449 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 450 offset += snprintf(buffer+offset, 16, "%s", op.name); 451 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 452 } 453 return send_str_over_rfcomm(cid, buffer); 454 } 455 456 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 457 char buffer[30]; 458 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 459 return send_str_over_rfcomm(cid, buffer); 460 } 461 462 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 463 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 464 } 465 466 static int hfp_ag_send_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 467 return hfp_ag_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 468 } 469 470 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 471 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 472 } 473 474 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 475 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 476 } 477 478 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 479 return hfp_ag_send_cmd_with_int(cid, HFP_RESPONSE_AND_HOLD, state); 480 } 481 482 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 483 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 484 485 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 486 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 487 return HFP_CODEC_MSBC; 488 } 489 } 490 return HFP_CODEC_CVSD; 491 } 492 493 /* state machines */ 494 495 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 496 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4)); 497 } 498 499 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 500 /* events ( == commands): 501 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 502 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 503 hf_trigger_codec_connection_setup == received BCC 504 ag_trigger_codec_connection_setup == received from AG to send BCS 505 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 506 */ 507 508 switch (hfp_connection->codecs_state){ 509 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 510 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 511 break; 512 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 513 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 514 break; 515 default: 516 break; 517 } 518 519 switch (hfp_connection->command){ 520 case HFP_CMD_AVAILABLE_CODECS: 521 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 522 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 523 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 524 return 1; 525 } 526 527 switch (hfp_connection->codecs_state){ 528 case HFP_CODECS_AG_SENT_COMMON_CODEC: 529 case HFP_CODECS_EXCHANGED: 530 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 531 break; 532 default: 533 break; 534 } 535 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 536 return 1; 537 538 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 539 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 540 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 541 return 1; 542 543 case HFP_CMD_AG_SEND_COMMON_CODEC: 544 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 545 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 546 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 547 return 1; 548 549 case HFP_CMD_HF_CONFIRMED_CODEC: 550 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 551 hfp_connection->codecs_state = HFP_CODECS_ERROR; 552 hfp_ag_send_error(hfp_connection->rfcomm_cid); 553 return 1; 554 } 555 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 556 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 557 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 558 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 559 // now, pick link settings 560 561 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 562 return 1; 563 default: 564 break; 565 } 566 return 0; 567 } 568 569 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 570 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 571 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 572 573 // if active call exist, set per-hfp_connection state active, too (when audio is on) 574 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 575 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 576 } 577 // if AG is ringing, also start ringing on the HF 578 if ((hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS) && 579 (hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS)){ 580 hfp_ag_hf_start_ringing(hfp_connection); 581 } 582 } 583 584 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 585 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 586 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 587 int sent = 0; 588 switch(hfp_connection->command){ 589 case HFP_CMD_SUPPORTED_FEATURES: 590 switch(hfp_connection->state){ 591 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 592 case HFP_EXCHANGE_SUPPORTED_FEATURES: 593 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 594 if (has_codec_negotiation_feature(hfp_connection)){ 595 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 596 } else { 597 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 598 } 599 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 600 return 1; 601 default: 602 break; 603 } 604 break; 605 case HFP_CMD_AVAILABLE_CODECS: 606 sent = codecs_exchange_state_machine(hfp_connection); 607 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 608 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 609 } 610 return sent; 611 612 case HFP_CMD_RETRIEVE_AG_INDICATORS: 613 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 614 // HF requested AG Indicators and we did expect it 615 hfp_connection->send_ag_indicators_segment = 0; 616 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 617 // continue below in state switch 618 } 619 break; 620 621 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 622 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 623 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 624 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 625 return 1; 626 627 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 628 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 629 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 630 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 631 } else if (has_hf_indicators_feature(hfp_connection)){ 632 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 633 } else { 634 hfp_ag_slc_established(hfp_connection); 635 } 636 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 637 return 1; 638 639 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 640 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 641 if (has_hf_indicators_feature(hfp_connection)){ 642 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 643 } 644 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 645 if (!has_hf_indicators_feature(hfp_connection)){ 646 hfp_ag_slc_established(hfp_connection); 647 } 648 return 1; 649 650 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 651 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 652 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 653 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 654 return 1; 655 656 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 657 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 658 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 659 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 660 return 1; 661 662 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 663 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 664 hfp_ag_slc_established(hfp_connection); 665 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 666 return 1; 667 default: 668 break; 669 } 670 671 switch (hfp_connection->state){ 672 case HFP_RETRIEVE_INDICATORS: { 673 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 674 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 675 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 676 if (next_segment < num_segments){ 677 // prepare sending of next segment 678 hfp_connection->send_ag_indicators_segment = next_segment; 679 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 680 } else { 681 // done, go to next state 682 hfp_connection->send_ag_indicators_segment = 0; 683 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 684 } 685 return 1; 686 } 687 default: 688 break; 689 } 690 return 0; 691 } 692 693 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 694 int sent = codecs_exchange_state_machine(hfp_connection); 695 if (sent) return 1; 696 697 switch(hfp_connection->command){ 698 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 699 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 700 hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 701 return 1; 702 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 703 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 704 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 705 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 706 hfp_ag_setup_audio_connection(hfp_connection); 707 } else { 708 hfp_ag_send_error(hfp_connection->rfcomm_cid); 709 } 710 return 1; 711 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 712 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 713 return 1; 714 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 715 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 716 return 1; 717 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 718 if (hfp_connection->network_operator.format != 0){ 719 hfp_ag_send_error(hfp_connection->rfcomm_cid); 720 } else { 721 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 722 } 723 return 1; 724 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 725 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 726 return 1; 727 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 728 if (hfp_connection->extended_audio_gateway_error){ 729 hfp_connection->extended_audio_gateway_error = 0; 730 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 731 return 1; 732 } 733 break; 734 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 735 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 736 return 1; 737 default: 738 break; 739 } 740 return 0; 741 } 742 743 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 744 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 745 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 746 747 748 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 749 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 750 hfp_connection->release_audio_connection = 0; 751 gap_disconnect(hfp_connection->sco_handle); 752 return 1; 753 } 754 755 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 756 757 // run codecs exchange 758 int sent = codecs_exchange_state_machine(hfp_connection); 759 if (sent) return 1; 760 761 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 762 if (hfp_connection->establish_audio_connection){ 763 hfp_connection->state = HFP_W4_SCO_CONNECTED; 764 hfp_connection->establish_audio_connection = 0; 765 hfp_setup_synchronous_connection(hfp_connection); 766 return 1; 767 } 768 return 0; 769 } 770 771 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 772 btstack_linked_list_iterator_t it; 773 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 774 775 while (btstack_linked_list_iterator_has_next(&it)){ 776 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 777 if ( & hfp_connection->hfp_timeout == ts) { 778 return hfp_connection; 779 } 780 } 781 return NULL; 782 } 783 784 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 785 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 786 if (!hfp_connection) return; 787 788 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 789 hfp_connection->ag_ring = 1; 790 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 791 792 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 793 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 794 795 hfp_ag_run_for_context(hfp_connection); 796 } 797 798 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 799 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 800 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 801 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 802 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 803 } 804 805 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 806 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 807 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 808 } 809 810 // 811 // transitition implementations for hfp_ag_call_state_machine 812 // 813 814 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 815 if (use_in_band_tone()){ 816 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 817 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 818 } else { 819 hfp_timeout_start(hfp_connection); 820 hfp_connection->ag_ring = 1; 821 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 822 hfp_connection->call_state = HFP_CALL_RINGING; 823 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 824 } 825 } 826 827 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 828 hfp_connection->ag_ring = 0; 829 hfp_connection->ag_send_clip = 0; 830 hfp_timeout_stop(hfp_connection); 831 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 832 } 833 834 static void hfp_ag_trigger_incoming_call(void){ 835 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 836 if (indicator_index < 0) return; 837 838 btstack_linked_list_iterator_t it; 839 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 840 while (btstack_linked_list_iterator_has_next(&it)){ 841 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 842 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 843 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 844 if (hfp_connection->call_state == HFP_CALL_IDLE){ 845 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 846 hfp_ag_hf_start_ringing(hfp_connection); 847 } 848 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 849 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 850 } 851 hfp_ag_run_for_context(hfp_connection); 852 } 853 } 854 855 static void hfp_ag_transfer_callsetup_state(void){ 856 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 857 if (indicator_index < 0) return; 858 859 btstack_linked_list_iterator_t it; 860 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 861 while (btstack_linked_list_iterator_has_next(&it)){ 862 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 863 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 864 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 865 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 866 hfp_ag_run_for_context(hfp_connection); 867 } 868 } 869 870 static void hfp_ag_transfer_call_state(void){ 871 int indicator_index = get_ag_indicator_index_for_name("call"); 872 if (indicator_index < 0) return; 873 874 btstack_linked_list_iterator_t it; 875 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 876 while (btstack_linked_list_iterator_has_next(&it)){ 877 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 878 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 879 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 880 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 881 hfp_ag_run_for_context(hfp_connection); 882 } 883 } 884 885 static void hfp_ag_transfer_callheld_state(void){ 886 int indicator_index = get_ag_indicator_index_for_name("callheld"); 887 if (indicator_index < 0) return; 888 889 btstack_linked_list_iterator_t it; 890 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 891 while (btstack_linked_list_iterator_has_next(&it)){ 892 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 893 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 894 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 895 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 896 hfp_ag_run_for_context(hfp_connection); 897 } 898 } 899 900 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 901 902 int call_indicator_index = get_ag_indicator_index_for_name("call"); 903 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 904 905 btstack_linked_list_iterator_t it; 906 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 907 while (btstack_linked_list_iterator_has_next(&it)){ 908 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 909 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 910 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 911 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 912 913 hfp_ag_hf_stop_ringing(hfp_connection); 914 if (hfp_connection == source){ 915 916 if (use_in_band_tone()){ 917 hfp_connection->call_state = HFP_CALL_ACTIVE; 918 } else { 919 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 920 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 921 } 922 923 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 924 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 925 926 } else { 927 hfp_connection->call_state = HFP_CALL_IDLE; 928 } 929 hfp_ag_run_for_context(hfp_connection); 930 } 931 } 932 933 static void hfp_ag_ag_accept_call(void){ 934 935 int call_indicator_index = get_ag_indicator_index_for_name("call"); 936 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 937 938 btstack_linked_list_iterator_t it; 939 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 940 while (btstack_linked_list_iterator_has_next(&it)){ 941 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 942 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 943 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 944 945 hfp_ag_hf_stop_ringing(hfp_connection); 946 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 947 948 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 949 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 950 951 hfp_ag_run_for_context(hfp_connection); 952 break; // only single 953 } 954 } 955 956 static void hfp_ag_trigger_reject_call(void){ 957 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 958 btstack_linked_list_iterator_t it; 959 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 960 while (btstack_linked_list_iterator_has_next(&it)){ 961 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 962 if (connection->local_role != HFP_ROLE_AG) continue; 963 if ((connection->call_state != HFP_CALL_RINGING) && 964 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 965 hfp_ag_hf_stop_ringing(connection); 966 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 967 connection->call_state = HFP_CALL_IDLE; 968 hfp_ag_run_for_context(connection); 969 } 970 } 971 972 static void hfp_ag_trigger_terminate_call(void){ 973 int call_indicator_index = get_ag_indicator_index_for_name("call"); 974 975 btstack_linked_list_iterator_t it; 976 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 977 while (btstack_linked_list_iterator_has_next(&it)){ 978 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 979 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 980 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 981 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 982 hfp_connection->call_state = HFP_CALL_IDLE; 983 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 984 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 985 hfp_connection->release_audio_connection = 1; 986 } 987 hfp_ag_run_for_context(hfp_connection); 988 } 989 hfp_ag_emit_simple_event(HFP_SUBEVENT_CALL_TERMINATED); 990 } 991 992 static void hfp_ag_set_callsetup_indicator(void){ 993 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 994 if (!indicator){ 995 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 996 return; 997 }; 998 indicator->status = hfp_gsm_callsetup_status(); 999 } 1000 1001 static void hfp_ag_set_callheld_indicator(void){ 1002 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1003 if (!indicator){ 1004 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1005 return; 1006 }; 1007 indicator->status = hfp_gsm_callheld_status(); 1008 } 1009 1010 static void hfp_ag_set_call_indicator(void){ 1011 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1012 if (!indicator){ 1013 log_error("hfp_ag_set_call_state: call indicator is missing"); 1014 return; 1015 }; 1016 indicator->status = hfp_gsm_call_status(); 1017 } 1018 1019 static void hfp_ag_stop_ringing(void){ 1020 btstack_linked_list_iterator_t it; 1021 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1022 while (btstack_linked_list_iterator_has_next(&it)){ 1023 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1024 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1025 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1026 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1027 hfp_ag_hf_stop_ringing(hfp_connection); 1028 } 1029 } 1030 1031 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1032 btstack_linked_list_iterator_t it; 1033 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1034 while (btstack_linked_list_iterator_has_next(&it)){ 1035 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1036 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1037 if (hfp_connection->call_state == call_state) return hfp_connection; 1038 } 1039 return NULL; 1040 } 1041 1042 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1043 btstack_linked_list_iterator_t it; 1044 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1045 while (btstack_linked_list_iterator_has_next(&it)){ 1046 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1047 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1048 hfp_connection->send_response_and_hold_status = state + 1; 1049 } 1050 } 1051 1052 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1053 int indicator_index; 1054 switch (hfp_connection->call_state){ 1055 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1056 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1057 // we got event: audio hfp_connection established 1058 hfp_timeout_start(hfp_connection); 1059 hfp_connection->ag_ring = 1; 1060 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1061 hfp_connection->call_state = HFP_CALL_RINGING; 1062 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1063 break; 1064 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1065 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1066 // we got event: audio hfp_connection established 1067 hfp_connection->call_state = HFP_CALL_ACTIVE; 1068 break; 1069 case HFP_CALL_W2_SEND_CALL_WAITING: 1070 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1071 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1072 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1073 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1074 break; 1075 default: 1076 break; 1077 } 1078 return 0; 1079 } 1080 1081 // functions extracted from hfp_ag_call_sm below 1082 static void hfp_ag_handle_reject_incoming_call(void){ 1083 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1084 if (!hfp_connection){ 1085 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1086 return; 1087 } 1088 1089 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1090 hfp_connection->call_state = HFP_CALL_IDLE; 1091 hfp_connection->send_error = 1; 1092 hfp_ag_run_for_context(hfp_connection); 1093 } 1094 1095 // hfp_connection is used to identify originating HF 1096 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1097 int indicator_index; 1098 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1099 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1100 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1101 1102 switch (event){ 1103 case HFP_AG_INCOMING_CALL: 1104 switch (hfp_gsm_call_status()){ 1105 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1106 switch (hfp_gsm_callsetup_status()){ 1107 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1108 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1109 hfp_ag_set_callsetup_indicator(); 1110 hfp_ag_trigger_incoming_call(); 1111 log_info("AG rings"); 1112 break; 1113 default: 1114 break; 1115 } 1116 break; 1117 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1118 switch (hfp_gsm_callsetup_status()){ 1119 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1120 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1121 hfp_ag_set_callsetup_indicator(); 1122 hfp_ag_trigger_incoming_call(); 1123 log_info("AG call waiting"); 1124 break; 1125 default: 1126 break; 1127 } 1128 break; 1129 default: 1130 break; 1131 } 1132 break; 1133 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1134 switch (hfp_gsm_call_status()){ 1135 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1136 switch (hfp_gsm_callsetup_status()){ 1137 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1138 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1139 hfp_ag_set_call_indicator(); 1140 hfp_ag_set_callsetup_indicator(); 1141 hfp_ag_ag_accept_call(); 1142 log_info("AG answers call, accept call by GSM"); 1143 break; 1144 default: 1145 break; 1146 } 1147 break; 1148 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1149 switch (hfp_gsm_callsetup_status()){ 1150 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1151 log_info("AG: current call is placed on hold, incoming call gets active"); 1152 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1153 hfp_ag_set_callsetup_indicator(); 1154 hfp_ag_set_callheld_indicator(); 1155 hfp_ag_transfer_callsetup_state(); 1156 hfp_ag_transfer_callheld_state(); 1157 break; 1158 default: 1159 break; 1160 } 1161 break; 1162 default: 1163 break; 1164 } 1165 break; 1166 1167 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1168 switch (hfp_gsm_call_status()){ 1169 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1170 switch (hfp_gsm_callheld_status()){ 1171 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1172 log_info("AG: joining held call with active call"); 1173 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1174 hfp_ag_set_callheld_indicator(); 1175 hfp_ag_transfer_callheld_state(); 1176 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1177 break; 1178 default: 1179 break; 1180 } 1181 break; 1182 default: 1183 break; 1184 } 1185 break; 1186 1187 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1188 switch (hfp_gsm_call_status()){ 1189 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1190 switch (hfp_gsm_callsetup_status()){ 1191 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1192 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1193 hfp_ag_set_callsetup_indicator(); 1194 hfp_ag_set_call_indicator(); 1195 hfp_ag_hf_accept_call(hfp_connection); 1196 hfp_connection->ok_pending = 1; 1197 log_info("HF answers call, accept call by GSM"); 1198 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1199 break; 1200 default: 1201 break; 1202 } 1203 break; 1204 default: 1205 break; 1206 } 1207 break; 1208 1209 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1210 switch (hfp_gsm_call_status()){ 1211 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1212 switch (hfp_gsm_callsetup_status()){ 1213 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1214 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1215 hfp_ag_response_and_hold_active = 1; 1216 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1217 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1218 // as with regualr call 1219 hfp_ag_set_call_indicator(); 1220 hfp_ag_set_callsetup_indicator(); 1221 hfp_ag_ag_accept_call(); 1222 log_info("AG response and hold - hold by AG"); 1223 break; 1224 default: 1225 break; 1226 } 1227 break; 1228 default: 1229 break; 1230 } 1231 break; 1232 1233 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1234 switch (hfp_gsm_call_status()){ 1235 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1236 switch (hfp_gsm_callsetup_status()){ 1237 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1238 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1239 hfp_ag_response_and_hold_active = 1; 1240 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1241 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1242 // as with regualr call 1243 hfp_ag_set_call_indicator(); 1244 hfp_ag_set_callsetup_indicator(); 1245 hfp_ag_hf_accept_call(hfp_connection); 1246 log_info("AG response and hold - hold by HF"); 1247 break; 1248 default: 1249 break; 1250 } 1251 break; 1252 default: 1253 break; 1254 } 1255 break; 1256 1257 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1258 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1259 if (!hfp_ag_response_and_hold_active) break; 1260 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1261 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1262 hfp_ag_response_and_hold_active = 0; 1263 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1264 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1265 log_info("Held Call accepted and active"); 1266 break; 1267 1268 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1269 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1270 if (!hfp_ag_response_and_hold_active) break; 1271 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1272 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1273 hfp_ag_response_and_hold_active = 0; 1274 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1275 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1276 // from terminate by ag 1277 hfp_ag_set_call_indicator(); 1278 hfp_ag_trigger_terminate_call(); 1279 break; 1280 1281 case HFP_AG_TERMINATE_CALL_BY_HF: 1282 switch (hfp_gsm_call_status()){ 1283 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1284 switch (hfp_gsm_callsetup_status()){ 1285 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1286 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1287 hfp_ag_set_callsetup_indicator(); 1288 hfp_ag_transfer_callsetup_state(); 1289 hfp_ag_trigger_reject_call(); 1290 log_info("HF Rejected Incoming call, AG terminate call"); 1291 break; 1292 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1293 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1294 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1295 hfp_ag_set_callsetup_indicator(); 1296 hfp_ag_transfer_callsetup_state(); 1297 log_info("AG terminate outgoing call process"); 1298 break; 1299 default: 1300 break; 1301 } 1302 break; 1303 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1304 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1305 hfp_ag_set_call_indicator(); 1306 hfp_ag_transfer_call_state(); 1307 hfp_connection->call_state = HFP_CALL_IDLE; 1308 log_info("AG terminate call"); 1309 break; 1310 default: 1311 break; 1312 } 1313 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1314 break; 1315 1316 case HFP_AG_TERMINATE_CALL_BY_AG: 1317 switch (hfp_gsm_call_status()){ 1318 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1319 switch (hfp_gsm_callsetup_status()){ 1320 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1321 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1322 hfp_ag_set_callsetup_indicator(); 1323 hfp_ag_trigger_reject_call(); 1324 log_info("AG Rejected Incoming call, AG terminate call"); 1325 break; 1326 default: 1327 break; 1328 } 1329 break; 1330 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1331 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1332 hfp_ag_set_callsetup_indicator(); 1333 hfp_ag_set_call_indicator(); 1334 hfp_ag_trigger_terminate_call(); 1335 log_info("AG terminate call"); 1336 break; 1337 default: 1338 break; 1339 } 1340 break; 1341 case HFP_AG_CALL_DROPPED: 1342 switch (hfp_gsm_call_status()){ 1343 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1344 switch (hfp_gsm_callsetup_status()){ 1345 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1346 hfp_ag_stop_ringing(); 1347 log_info("Incoming call interrupted"); 1348 break; 1349 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1350 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1351 log_info("Outgoing call interrupted\n"); 1352 log_info("AG notify call dropped\n"); 1353 break; 1354 default: 1355 break; 1356 } 1357 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1358 hfp_ag_set_callsetup_indicator(); 1359 hfp_ag_transfer_callsetup_state(); 1360 hfp_ag_trigger_terminate_call(); 1361 break; 1362 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1363 if (hfp_ag_response_and_hold_active) { 1364 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1365 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1366 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1367 } 1368 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1369 hfp_ag_set_callsetup_indicator(); 1370 hfp_ag_set_call_indicator(); 1371 hfp_ag_trigger_terminate_call(); 1372 log_info("AG notify call dropped"); 1373 break; 1374 default: 1375 break; 1376 } 1377 break; 1378 1379 case HFP_AG_OUTGOING_CALL_INITIATED: 1380 // directly reject call if number of free slots is exceeded 1381 if (!hfp_gsm_call_possible()){ 1382 hfp_connection->send_error = 1; 1383 hfp_ag_run_for_context(hfp_connection); 1384 break; 1385 } 1386 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1387 1388 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1389 1390 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1391 break; 1392 1393 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1394 // directly reject call if number of free slots is exceeded 1395 if (!hfp_gsm_call_possible()){ 1396 hfp_connection->send_error = 1; 1397 hfp_ag_run_for_context(hfp_connection); 1398 break; 1399 } 1400 1401 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1402 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1403 1404 log_info("Redial last number"); 1405 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1406 1407 if (strlen(last_dialed_number) > 0){ 1408 log_info("Last number exists: accept call"); 1409 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1410 } else { 1411 log_info("log_infoLast number missing: reject call"); 1412 hfp_ag_handle_reject_incoming_call(); 1413 } 1414 break; 1415 } 1416 case HFP_AG_OUTGOING_CALL_REJECTED: 1417 hfp_ag_handle_reject_incoming_call(); 1418 break; 1419 1420 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1421 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1422 if (!hfp_connection){ 1423 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1424 break; 1425 } 1426 1427 hfp_connection->ok_pending = 1; 1428 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1429 1430 // trigger callsetup to be 1431 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1432 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1433 1434 hfp_ag_set_callsetup_indicator(); 1435 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1436 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1437 1438 // put current call on hold if active 1439 if (put_call_on_hold){ 1440 log_info("AG putting current call on hold for new outgoing calllog_info"); 1441 hfp_ag_set_callheld_indicator(); 1442 indicator_index = get_ag_indicator_index_for_name("callheld"); 1443 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1444 } 1445 1446 // start audio if needed 1447 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1448 break; 1449 } 1450 case HFP_AG_OUTGOING_CALL_RINGING: 1451 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1452 if (!hfp_connection){ 1453 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1454 break; 1455 } 1456 1457 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1458 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1459 hfp_ag_set_callsetup_indicator(); 1460 hfp_ag_transfer_callsetup_state(); 1461 break; 1462 1463 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1464 // get outgoing call 1465 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1466 if (!hfp_connection){ 1467 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1468 } 1469 if (!hfp_connection){ 1470 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1471 break; 1472 } 1473 1474 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1475 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1476 hfp_connection->call_state = HFP_CALL_ACTIVE; 1477 hfp_ag_set_callsetup_indicator(); 1478 hfp_ag_set_call_indicator(); 1479 hfp_ag_transfer_call_state(); 1480 hfp_ag_transfer_callsetup_state(); 1481 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1482 hfp_ag_set_callheld_indicator(); 1483 hfp_ag_transfer_callheld_state(); 1484 } 1485 break; 1486 } 1487 1488 case HFP_AG_CALL_HOLD_USER_BUSY: 1489 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1490 hfp_ag_set_callsetup_indicator(); 1491 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1492 hfp_connection->call_state = HFP_CALL_ACTIVE; 1493 log_info("AG: Call Waiting, User Busy"); 1494 break; 1495 1496 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1497 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1498 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1499 1500 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1501 if (call_held || call_setup_in_progress){ 1502 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1503 1504 } 1505 1506 if (call_setup_in_progress){ 1507 log_info("AG: Call Dropped, Accept new call"); 1508 hfp_ag_set_callsetup_indicator(); 1509 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1510 } else { 1511 log_info("AG: Call Dropped, Resume held call"); 1512 } 1513 if (call_held){ 1514 hfp_ag_set_callheld_indicator(); 1515 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1516 } 1517 1518 hfp_connection->call_state = HFP_CALL_ACTIVE; 1519 break; 1520 } 1521 1522 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1523 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1524 // only update if callsetup changed 1525 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1526 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1527 1528 if (call_setup_in_progress){ 1529 log_info("AG: Call on Hold, Accept new call"); 1530 hfp_ag_set_callsetup_indicator(); 1531 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1532 } else { 1533 log_info("AG: Swap calls"); 1534 } 1535 1536 hfp_ag_set_callheld_indicator(); 1537 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1538 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1539 hfp_connection->call_state = HFP_CALL_ACTIVE; 1540 break; 1541 } 1542 1543 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1544 // Adds a held call to the conversation. 1545 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1546 log_info("AG: Join 3-way-call"); 1547 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1548 hfp_ag_set_callheld_indicator(); 1549 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1550 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1551 } 1552 hfp_connection->call_state = HFP_CALL_ACTIVE; 1553 break; 1554 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1555 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1556 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1557 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1558 hfp_ag_set_call_indicator(); 1559 hfp_ag_set_callheld_indicator(); 1560 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1561 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1562 hfp_connection->call_state = HFP_CALL_IDLE; 1563 break; 1564 1565 default: 1566 break; 1567 } 1568 1569 1570 } 1571 1572 1573 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1574 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1575 if (!active_call) return; 1576 1577 int idx = active_call->index; 1578 hfp_enhanced_call_dir_t dir = active_call->direction; 1579 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1580 hfp_enhanced_call_mode_t mode = active_call->mode; 1581 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1582 uint8_t type = active_call->clip_type; 1583 char * number = active_call->clip_number; 1584 1585 char buffer[100]; 1586 // TODO: check length of a buffer, to fit the MTU 1587 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1588 if (number){ 1589 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1590 } 1591 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1592 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, 1593 mode, mpty, type, number); 1594 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1595 } 1596 1597 1598 // sends pending command, returns if command was sent 1599 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1600 1601 if (hfp_connection->send_status_of_current_calls){ 1602 hfp_connection->ok_pending = 0; 1603 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1604 hfp_connection->next_call_index++; 1605 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1606 return 1; 1607 } else { 1608 // 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 1609 hfp_connection->next_call_index = 0; 1610 hfp_connection->ok_pending = 1; 1611 hfp_connection->send_status_of_current_calls = 0; 1612 } 1613 } 1614 1615 if (hfp_connection->ag_notify_incoming_call_waiting){ 1616 hfp_connection->ag_notify_incoming_call_waiting = 0; 1617 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1618 return 1; 1619 } 1620 1621 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1622 hfp_connection->ok_pending = 0; 1623 hfp_connection->send_error = 0; 1624 hfp_connection->command = HFP_CMD_NONE; 1625 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1626 return 1; 1627 } 1628 1629 if (hfp_connection->send_error){ 1630 hfp_connection->send_error = 0; 1631 hfp_connection->command = HFP_CMD_NONE; 1632 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1633 return 1; 1634 } 1635 1636 // note: before update AG indicators and ok_pending 1637 if (hfp_connection->send_response_and_hold_status){ 1638 int status = hfp_connection->send_response_and_hold_status - 1; 1639 hfp_connection->send_response_and_hold_status = 0; 1640 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1641 return 1; 1642 } 1643 1644 if (hfp_connection->ok_pending){ 1645 hfp_connection->ok_pending = 0; 1646 hfp_connection->command = HFP_CMD_NONE; 1647 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1648 return 1; 1649 } 1650 1651 // update AG indicators 1652 if (hfp_connection->ag_indicators_status_update_bitmap){ 1653 int i; 1654 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1655 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1656 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1657 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1658 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1659 break; 1660 } 1661 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1662 return 1; 1663 } 1664 } 1665 } 1666 1667 if (hfp_connection->ag_ring){ 1668 hfp_connection->ag_ring = 0; 1669 hfp_connection->command = HFP_CMD_NONE; 1670 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1671 return 1; 1672 } 1673 1674 if (hfp_connection->ag_send_clip){ 1675 hfp_connection->ag_send_clip = 0; 1676 hfp_connection->command = HFP_CMD_NONE; 1677 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1678 return 1; 1679 } 1680 1681 if (hfp_connection->send_phone_number_for_voice_tag){ 1682 hfp_connection->send_phone_number_for_voice_tag = 0; 1683 hfp_connection->command = HFP_CMD_NONE; 1684 hfp_connection->ok_pending = 1; 1685 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1686 return 1; 1687 } 1688 1689 if (hfp_connection->send_subscriber_number){ 1690 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1691 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1692 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1693 } else { 1694 hfp_connection->send_subscriber_number = 0; 1695 hfp_connection->next_subscriber_number_to_send = 0; 1696 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1697 } 1698 hfp_connection->command = HFP_CMD_NONE; 1699 return 1; 1700 } 1701 1702 if (hfp_connection->send_microphone_gain){ 1703 hfp_connection->send_microphone_gain = 0; 1704 hfp_connection->command = HFP_CMD_NONE; 1705 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1706 return 1; 1707 } 1708 1709 if (hfp_connection->send_speaker_gain){ 1710 hfp_connection->send_speaker_gain = 0; 1711 hfp_connection->command = HFP_CMD_NONE; 1712 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1713 return 1; 1714 } 1715 1716 if (hfp_connection->send_ag_status_indicators){ 1717 hfp_connection->send_ag_status_indicators = 0; 1718 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1719 return 1; 1720 } 1721 1722 return 0; 1723 } 1724 1725 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1726 1727 btstack_assert(hfp_connection != NULL); 1728 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1729 1730 // during SDP query, RFCOMM CID is not set 1731 if (hfp_connection->rfcomm_cid == 0) return; 1732 1733 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1734 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1735 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1736 return; 1737 } 1738 1739 int cmd_sent = hfp_ag_send_commands(hfp_connection); 1740 1741 // trigger codec exchange if requested by app 1742 if (hfp_connection->trigger_codec_exchange){ 1743 log_info("trigger codec, command %u, codec state %u", hfp_connection->command, hfp_connection->codecs_state); 1744 } 1745 1746 if (hfp_connection->trigger_codec_exchange && (hfp_connection->command == HFP_CMD_NONE)){ 1747 switch (hfp_connection->codecs_state){ 1748 case HFP_CODECS_IDLE: 1749 case HFP_CODECS_RECEIVED_LIST: 1750 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1751 case HFP_CODECS_ERROR: 1752 hfp_connection->trigger_codec_exchange = 0; 1753 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1754 break; 1755 default: 1756 break; 1757 } 1758 } 1759 1760 if (!cmd_sent){ 1761 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1762 } 1763 1764 if (!cmd_sent){ 1765 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1766 } 1767 1768 if (!cmd_sent){ 1769 cmd_sent = call_setup_state_machine(hfp_connection); 1770 } 1771 1772 if (!cmd_sent){ 1773 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1774 } 1775 1776 if ((hfp_connection->command == HFP_CMD_NONE) && !cmd_sent){ 1777 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1778 switch(hfp_connection->state){ 1779 case HFP_W2_DISCONNECT_RFCOMM: 1780 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1781 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1782 break; 1783 default: 1784 break; 1785 } 1786 } 1787 1788 if (cmd_sent){ 1789 hfp_connection->command = HFP_CMD_NONE; 1790 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1791 } 1792 } 1793 1794 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1795 int i; 1796 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1797 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1798 if (indicator->uuid == number){ 1799 return indicator; 1800 } 1801 } 1802 return NULL; 1803 } 1804 1805 static int hfp_parser_is_end_of_line(uint8_t byte){ 1806 return (byte == '\n') || (byte == '\r'); 1807 } 1808 1809 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1810 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1811 1812 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1813 if (size < 1) return; 1814 1815 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1816 if (!hfp_connection) return; 1817 1818 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 1819 1820 // process messages byte-wise 1821 int pos; 1822 for (pos = 0; pos < size ; pos++){ 1823 hfp_parse(hfp_connection, packet[pos], 0); 1824 1825 // parse until end of line 1826 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1827 1828 hfp_generic_status_indicator_t * indicator; 1829 switch(hfp_connection->command){ 1830 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1831 if (hfp_ag_response_and_hold_active){ 1832 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1833 } 1834 hfp_connection->ok_pending = 1; 1835 break; 1836 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1837 switch(hfp_connection->ag_response_and_hold_action){ 1838 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1839 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1840 break; 1841 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1842 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1843 break; 1844 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1845 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1846 break; 1847 default: 1848 break; 1849 } 1850 hfp_connection->ok_pending = 1; 1851 break; 1852 case HFP_CMD_HF_INDICATOR_STATUS: 1853 hfp_connection->command = HFP_CMD_NONE; 1854 // find indicator by assigned number 1855 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1856 if (!indicator){ 1857 hfp_connection->send_error = 1; 1858 break; 1859 } 1860 switch (indicator->uuid){ 1861 case 1: // enhanced security 1862 if (hfp_connection->parser_indicator_value > 1) { 1863 hfp_connection->send_error = 1; 1864 return; 1865 } 1866 log_info("HF Indicator 'enhanced security' set to %u", hfp_connection->parser_indicator_value); 1867 break; 1868 case 2: // battery level 1869 if (hfp_connection->parser_indicator_value > 100){ 1870 hfp_connection->send_error = 1; 1871 return; 1872 } 1873 log_info("HF Indicator 'battery' set to %u", hfp_connection->parser_indicator_value); 1874 break; 1875 default: 1876 log_info("HF Indicator unknown set to %u", hfp_connection->parser_indicator_value); 1877 break; 1878 } 1879 hfp_connection->ok_pending = 1; 1880 break; 1881 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1882 // expected by SLC state machine 1883 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1884 hfp_connection->send_ag_indicators_segment = 0; 1885 hfp_connection->send_ag_status_indicators = 1; 1886 break; 1887 case HFP_CMD_LIST_CURRENT_CALLS: 1888 hfp_connection->command = HFP_CMD_NONE; 1889 hfp_connection->next_call_index = 0; 1890 hfp_connection->send_status_of_current_calls = 1; 1891 break; 1892 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1893 if (subscriber_numbers_count == 0){ 1894 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1895 break; 1896 } 1897 hfp_connection->next_subscriber_number_to_send = 0; 1898 hfp_connection->send_subscriber_number = 1; 1899 break; 1900 case HFP_CMD_TRANSMIT_DTMF_CODES: 1901 { 1902 hfp_connection->command = HFP_CMD_NONE; 1903 char buffer[2]; 1904 buffer[0] = (char) hfp_connection->ag_dtmf_code; 1905 buffer[1] = 0; 1906 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 1907 break; 1908 } 1909 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1910 hfp_connection->command = HFP_CMD_NONE; 1911 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1912 break; 1913 case HFP_CMD_TURN_OFF_EC_AND_NR: 1914 hfp_connection->command = HFP_CMD_NONE; 1915 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1916 hfp_connection->ok_pending = 1; 1917 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1918 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1919 } else { 1920 hfp_connection->send_error = 1; 1921 } 1922 break; 1923 case HFP_CMD_CALL_ANSWERED: 1924 hfp_connection->command = HFP_CMD_NONE; 1925 log_info("HFP: ATA"); 1926 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1927 break; 1928 case HFP_CMD_HANG_UP_CALL: 1929 hfp_connection->command = HFP_CMD_NONE; 1930 hfp_connection->ok_pending = 1; 1931 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1932 break; 1933 case HFP_CMD_CALL_HOLD: { 1934 hfp_connection->command = HFP_CMD_NONE; 1935 hfp_connection->ok_pending = 1; 1936 1937 switch (hfp_connection->ag_call_hold_action){ 1938 case 0: 1939 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1940 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1941 break; 1942 case 1: 1943 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1944 // Where both a held and a waiting call exist, the above procedures shall apply to the 1945 // waiting call (i.e., not to the held call) in conflicting situation. 1946 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1947 break; 1948 case 2: 1949 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1950 // Where both a held and a waiting call exist, the above procedures shall apply to the 1951 // waiting call (i.e., not to the held call) in conflicting situation. 1952 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1953 break; 1954 case 3: 1955 // Adds a held call to the conversation. 1956 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1957 break; 1958 case 4: 1959 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1960 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1961 break; 1962 default: 1963 break; 1964 } 1965 hfp_connection->call_index = 0; 1966 break; 1967 } 1968 case HFP_CMD_CALL_PHONE_NUMBER: 1969 hfp_connection->command = HFP_CMD_NONE; 1970 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1971 break; 1972 case HFP_CMD_REDIAL_LAST_NUMBER: 1973 hfp_connection->command = HFP_CMD_NONE; 1974 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1975 break; 1976 case HFP_CMD_ENABLE_CLIP: 1977 hfp_connection->command = HFP_CMD_NONE; 1978 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1979 hfp_connection->ok_pending = 1; 1980 break; 1981 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1982 hfp_connection->command = HFP_CMD_NONE; 1983 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1984 hfp_connection->ok_pending = 1; 1985 break; 1986 case HFP_CMD_SET_SPEAKER_GAIN: 1987 hfp_connection->command = HFP_CMD_NONE; 1988 hfp_connection->ok_pending = 1; 1989 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 1990 break; 1991 case HFP_CMD_SET_MICROPHONE_GAIN: 1992 hfp_connection->command = HFP_CMD_NONE; 1993 hfp_connection->ok_pending = 1; 1994 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 1995 break; 1996 default: 1997 break; 1998 } 1999 } 2000 } 2001 2002 static void hfp_run(void){ 2003 btstack_linked_list_iterator_t it; 2004 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2005 while (btstack_linked_list_iterator_has_next(&it)){ 2006 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2007 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2008 hfp_ag_run_for_context(hfp_connection); 2009 } 2010 } 2011 2012 static void rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2013 switch (packet_type){ 2014 case RFCOMM_DATA_PACKET: 2015 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 2016 break; 2017 case HCI_EVENT_PACKET: 2018 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2019 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2020 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2021 return; 2022 } 2023 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2024 break; 2025 default: 2026 break; 2027 } 2028 2029 hfp_run(); 2030 } 2031 2032 static void hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2033 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2034 2035 // allow for sco established -> ring transition 2036 if (packet_type != HCI_EVENT_PACKET) return; 2037 if (hci_event_packet_get_type(packet) != HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE) return; 2038 hfp_run(); 2039 } 2040 2041 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2042 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2043 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2044 return; 2045 } 2046 int i; 2047 hfp_codecs_nr = codecs_nr; 2048 for (i=0; i < codecs_nr; i++){ 2049 hfp_codecs[i] = codecs[i]; 2050 } 2051 } 2052 2053 void hfp_ag_init_supported_features(uint32_t supported_features){ 2054 hfp_supported_features = supported_features; 2055 } 2056 2057 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2058 hfp_ag_indicators_nr = ag_indicators_nr; 2059 (void)memcpy(hfp_ag_indicators, ag_indicators, 2060 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2061 } 2062 2063 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2064 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2065 hfp_generic_status_indicators_nr = hf_indicators_nr; 2066 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2067 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2068 } 2069 2070 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2071 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2072 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2073 call_hold_services_nr * sizeof(char *)); 2074 } 2075 2076 2077 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2078 2079 hfp_init(); 2080 2081 hci_event_callback_registration.callback = &hci_event_packet_handler; 2082 hci_add_event_handler(&hci_event_callback_registration); 2083 2084 rfcomm_register_service(&rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2085 2086 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2087 hfp_set_ag_rfcomm_packet_handler(&rfcomm_packet_handler); 2088 2089 hfp_ag_response_and_hold_active = 0; 2090 subscriber_numbers = NULL; 2091 subscriber_numbers_count = 0; 2092 2093 hfp_gsm_init(); 2094 } 2095 2096 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2097 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2098 } 2099 2100 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2101 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2102 if (!hfp_connection){ 2103 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2104 return; 2105 } 2106 hfp_release_service_level_connection(hfp_connection); 2107 hfp_ag_run_for_context(hfp_connection); 2108 } 2109 2110 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2111 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2112 if (!hfp_connection){ 2113 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2114 return; 2115 } 2116 hfp_connection->extended_audio_gateway_error = 0; 2117 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2118 return; 2119 } 2120 hfp_connection->extended_audio_gateway_error = error; 2121 hfp_ag_run_for_context(hfp_connection); 2122 } 2123 2124 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2125 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2126 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2127 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2128 2129 hfp_connection->establish_audio_connection = 1; 2130 if (!has_codec_negotiation_feature(hfp_connection)){ 2131 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2132 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2133 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2134 // now, pick link settings 2135 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2136 return; 2137 } 2138 2139 hfp_connection->trigger_codec_exchange = 1; 2140 } 2141 2142 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2143 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2144 if (!hfp_connection){ 2145 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2146 return; 2147 } 2148 hfp_connection->trigger_codec_exchange = 0; 2149 hfp_connection->establish_audio_connection = 0; 2150 hfp_ag_setup_audio_connection(hfp_connection); 2151 hfp_ag_run_for_context(hfp_connection); 2152 } 2153 2154 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2155 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2156 if (!hfp_connection){ 2157 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2158 return; 2159 } 2160 hfp_release_audio_connection(hfp_connection); 2161 hfp_ag_run_for_context(hfp_connection); 2162 } 2163 2164 /** 2165 * @brief Enable in-band ring tone 2166 */ 2167 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2168 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2169 return; 2170 } 2171 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2172 2173 btstack_linked_list_iterator_t it; 2174 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2175 while (btstack_linked_list_iterator_has_next(&it)){ 2176 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2177 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2178 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2179 hfp_ag_run_for_context(hfp_connection); 2180 } 2181 } 2182 2183 /** 2184 * @brief Called from GSM 2185 */ 2186 void hfp_ag_incoming_call(void){ 2187 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2188 } 2189 2190 /** 2191 * @brief number is stored. 2192 */ 2193 void hfp_ag_set_clip(uint8_t type, const char * number){ 2194 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2195 } 2196 2197 void hfp_ag_call_dropped(void){ 2198 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2199 } 2200 2201 // call from AG UI 2202 void hfp_ag_answer_incoming_call(void){ 2203 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2204 } 2205 2206 void hfp_ag_join_held_call(void){ 2207 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2208 } 2209 2210 void hfp_ag_terminate_call(void){ 2211 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2212 } 2213 2214 void hfp_ag_outgoing_call_ringing(void){ 2215 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2216 } 2217 2218 void hfp_ag_outgoing_call_established(void){ 2219 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2220 } 2221 2222 void hfp_ag_outgoing_call_rejected(void){ 2223 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2224 } 2225 2226 void hfp_ag_outgoing_call_accepted(void){ 2227 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2228 } 2229 2230 void hfp_ag_hold_incoming_call(void){ 2231 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2232 } 2233 2234 void hfp_ag_accept_held_incoming_call(void) { 2235 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2236 } 2237 2238 void hfp_ag_reject_held_incoming_call(void){ 2239 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2240 } 2241 2242 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2243 int indicator_index = get_ag_indicator_index_for_name(name); 2244 if (indicator_index < 0) return; 2245 hfp_ag_indicators[indicator_index].status = value; 2246 2247 2248 btstack_linked_list_iterator_t it; 2249 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2250 while (btstack_linked_list_iterator_has_next(&it)){ 2251 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2252 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2253 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2254 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2255 continue; 2256 } 2257 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2258 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2259 hfp_ag_run_for_context(hfp_connection); 2260 } 2261 } 2262 2263 void hfp_ag_set_registration_status(int status){ 2264 hfp_ag_set_ag_indicator("service", status); 2265 } 2266 2267 void hfp_ag_set_signal_strength(int strength){ 2268 hfp_ag_set_ag_indicator("signal", strength); 2269 } 2270 2271 void hfp_ag_set_roaming_status(int status){ 2272 hfp_ag_set_ag_indicator("roam", status); 2273 } 2274 2275 void hfp_ag_set_battery_level(int level){ 2276 hfp_ag_set_ag_indicator("battchg", level); 2277 } 2278 2279 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2280 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2281 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2282 if (!hfp_connection){ 2283 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2284 return; 2285 } 2286 2287 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2288 log_info("AG cannot acivate voice recognition - not supported by HF"); 2289 return; 2290 } 2291 2292 if (activate){ 2293 hfp_ag_establish_audio_connection(acl_handle); 2294 } 2295 2296 hfp_connection->ag_activate_voice_recognition = activate; 2297 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2298 hfp_ag_run_for_context(hfp_connection); 2299 } 2300 2301 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2302 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2303 if (!hfp_connection){ 2304 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2305 return; 2306 } 2307 if (hfp_connection->microphone_gain != gain){ 2308 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2309 hfp_connection->microphone_gain = gain; 2310 hfp_connection->send_microphone_gain = 1; 2311 } 2312 hfp_ag_run_for_context(hfp_connection); 2313 } 2314 2315 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2316 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2317 if (!hfp_connection){ 2318 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2319 return; 2320 } 2321 if (hfp_connection->speaker_gain != gain){ 2322 hfp_connection->speaker_gain = gain; 2323 hfp_connection->send_speaker_gain = 1; 2324 } 2325 hfp_ag_run_for_context(hfp_connection); 2326 } 2327 2328 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2329 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2330 if (!hfp_connection){ 2331 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2332 return; 2333 } 2334 hfp_ag_set_clip(0, number); 2335 hfp_connection->send_phone_number_for_voice_tag = 1; 2336 } 2337 2338 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2339 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2340 if (!hfp_connection){ 2341 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2342 return; 2343 } 2344 hfp_connection->send_error = 1; 2345 } 2346 2347 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2348 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2349 if (!hfp_connection){ 2350 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2351 return; 2352 } 2353 hfp_connection->ok_pending = 1; 2354 } 2355 2356 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2357 subscriber_numbers = numbers; 2358 subscriber_numbers_count = numbers_count; 2359 } 2360 2361 void hfp_ag_clear_last_dialed_number(void){ 2362 hfp_gsm_clear_last_dialed_number(); 2363 } 2364 2365 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2366 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2367 if (!hfp_connection){ 2368 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2369 return; 2370 } 2371 if (!hfp_connection->call_waiting_notification_enabled) return; 2372 2373 hfp_connection->ag_notify_incoming_call_waiting = 1; 2374 hfp_ag_run_for_context(hfp_connection); 2375 } 2376 2377 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){ 2378 if (!name){ 2379 name = default_hfp_ag_service_name; 2380 } 2381 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2382 2383 /* 2384 * 0x01 – Ability to reject a call 2385 * 0x00 – No ability to reject a call 2386 */ 2387 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2388 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2389 2390 // Construct SupportedFeatures for SDP bitmap: 2391 // 2392 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2393 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2394 // 2395 // Wide band speech (bit 5) requires Codec negotiation 2396 // 2397 uint16_t sdp_features = supported_features & 0x1f; 2398 if (wide_band_speech && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2399 sdp_features |= 1 << 5; 2400 } 2401 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2402 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2403 } 2404 2405 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2406 if (callback == NULL){ 2407 log_error("hfp_ag_register_packet_handler called with NULL callback"); 2408 return; 2409 } 2410 hfp_ag_callback = callback; 2411 hfp_set_ag_callback(callback); 2412 } 2413