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 hfp_ag_hci_event_callback_registration; 83 84 // gobals 85 static const char default_hfp_ag_service_name[] = "Voice gateway"; 86 87 static uint16_t hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 88 89 static uint8_t hfp_codecs_nr = 0; 90 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 91 92 static int hfp_ag_indicators_nr = 0; 93 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_INDICATORS]; 94 95 static int hfp_generic_status_indicators_nr = 0; 96 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_INDICATORS]; 97 98 static int hfp_ag_call_hold_services_nr = 0; 99 static char *hfp_ag_call_hold_services[6]; 100 static btstack_packet_handler_t hfp_ag_callback; 101 102 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 103 static int hfp_ag_response_and_hold_active = 0; 104 105 // Subcriber information entries 106 static hfp_phone_number_t * subscriber_numbers = NULL; 107 static int subscriber_numbers_count = 0; 108 109 110 static void hfp_ag_emit_simple_event(uint8_t event_subtype){ 111 uint8_t event[3]; 112 event[0] = HCI_EVENT_HFP_META; 113 event[1] = sizeof(event) - 2; 114 event[2] = event_subtype; 115 if (!hfp_ag_callback) return; 116 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 117 } 118 119 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 120 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 121 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 122 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 123 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 124 } 125 return hfp_connection->ag_indicators_nr; 126 } 127 128 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 129 // TODO: save only value, and value changed in the hfp_connection? 130 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 131 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 132 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 133 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 134 } 135 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 136 } 137 138 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 139 int i; 140 for (i = 0; i < hfp_ag_indicators_nr; i++){ 141 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 142 return &hfp_ag_indicators[i]; 143 } 144 } 145 return NULL; 146 } 147 148 static int get_ag_indicator_index_for_name(const char * name){ 149 int i; 150 for (i = 0; i < hfp_ag_indicators_nr; i++){ 151 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 152 return i; 153 } 154 } 155 return -1; 156 } 157 158 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 159 btstack_linked_list_iterator_t it; 160 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 161 while (btstack_linked_list_iterator_has_next(&it)){ 162 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 163 if (hfp_connection->acl_handle != handle) continue; 164 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 165 return hfp_connection; 166 } 167 return NULL; 168 } 169 170 static int use_in_band_tone(void){ 171 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 172 } 173 174 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 175 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 176 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 177 return hf && ag; 178 } 179 180 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 181 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 182 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 183 return hf && ag; 184 } 185 186 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 187 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 188 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 189 return hf && ag; 190 } 191 192 /* unsolicited responses */ 193 194 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 195 char buffer[20]; 196 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 197 return send_str_over_rfcomm(cid, buffer); 198 } 199 200 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 201 char buffer[40]; 202 sprintf(buffer, "\r\n%s:%d\r\n\r\nOK\r\n", HFP_SUPPORTED_FEATURES, hfp_supported_features); 203 return send_str_over_rfcomm(cid, buffer); 204 } 205 206 static int hfp_ag_send_ok(uint16_t cid){ 207 char buffer[10]; 208 sprintf(buffer, "\r\nOK\r\n"); 209 return send_str_over_rfcomm(cid, buffer); 210 } 211 212 static int hfp_ag_send_ring(uint16_t cid){ 213 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 214 } 215 216 static int hfp_ag_send_clip(uint16_t cid){ 217 char buffer[50]; 218 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 219 return send_str_over_rfcomm(cid, buffer); 220 } 221 222 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 223 char buffer[50]; 224 sprintf(buffer, "\r\n%s: ,\"%s\",%u, , \r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 225 return send_str_over_rfcomm(cid, buffer); 226 } 227 228 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 229 char buffer[50]; 230 sprintf(buffer, "\r\n%s: %s\r\n", HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 231 return send_str_over_rfcomm(cid, buffer); 232 } 233 234 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 235 char buffer[50]; 236 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 237 return send_str_over_rfcomm(cid, buffer); 238 } 239 240 static int hfp_ag_send_error(uint16_t cid){ 241 char buffer[10]; 242 sprintf(buffer, "\r\nERROR\r\n"); 243 return send_str_over_rfcomm(cid, buffer); 244 } 245 246 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 247 char buffer[20]; 248 sprintf(buffer, "\r\n%s=%d\r\n", HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 249 return send_str_over_rfcomm(cid, buffer); 250 } 251 252 // get size for indicator string 253 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 254 // template: ("$NAME",($MIN,$MAX)) 255 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 256 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 257 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 258 } 259 260 // store indicator 261 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer){ 262 sprintf((char *) buffer, "(\"%s\",(%d,%d)),", 263 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 264 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 265 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 266 } 267 268 // structure: header [indicator [comma indicator]] footer 269 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 270 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 271 if (!num_indicators) return 2; 272 return 3 + ((num_indicators-1) * 2); 273 } 274 275 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 276 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 277 if (index == 0) { 278 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 279 } 280 index--; 281 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 282 int indicator_index = index >> 1; 283 if ((index & 1) == 0){ 284 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 285 } 286 if (indicator_index == (num_indicators - 1)){ 287 return 8; // "\r\n\r\nOK\r\n" 288 } 289 return 1; // comma 290 } 291 292 static void hgp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer){ 293 if (index == 0){ 294 *buffer++ = '\r'; 295 *buffer++ = '\n'; 296 int len = strlen(HFP_INDICATOR); 297 (void)memcpy(buffer, HFP_INDICATOR, len); 298 buffer += len; 299 *buffer++ = ':'; 300 return; 301 } 302 index--; 303 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 304 int indicator_index = index >> 1; 305 if ((index & 1) == 0){ 306 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer); 307 return; 308 } 309 if (indicator_index == (num_indicators-1)){ 310 (void)memcpy(buffer, "\r\n\r\nOK\r\n", 8); 311 return; 312 } 313 *buffer = ','; 314 } 315 316 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 317 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 318 int i; 319 int offset = 0; 320 for (i = 0; i < (hfp_generic_status_indicators_nr-1); i++) { 321 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 322 } 323 if (i < hfp_generic_status_indicators_nr){ 324 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 325 } 326 return offset; 327 } 328 329 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 330 if (buffer_size < (hfp_generic_status_indicators_nr * 3)) return 0; 331 int i; 332 int offset = 0; 333 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 334 offset += snprintf(buffer+offset, buffer_size-offset, "\r\n%s:%d,%d\r\n", HFP_GENERIC_STATUS_INDICATOR, hfp_generic_status_indicators[i].uuid, hfp_generic_status_indicators[i].state); 335 } 336 return offset; 337 } 338 339 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 340 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 341 int i; 342 int offset = 0; 343 for (i = 0; i < (hfp_ag_indicators_nr-1); i++) { 344 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 345 } 346 if (i<hfp_ag_indicators_nr){ 347 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 348 } 349 return offset; 350 } 351 352 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 353 if (buffer_size < (hfp_ag_call_hold_services_nr * 3)) return 0; 354 int i; 355 int offset = snprintf(buffer, buffer_size, "("); 356 for (i = 0; i < (hfp_ag_call_hold_services_nr-1); i++) { 357 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 358 } 359 if (i<hfp_ag_call_hold_services_nr){ 360 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 361 } 362 return offset; 363 } 364 365 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 366 int start_segment, int num_segments, 367 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 368 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer)){ 369 370 // assumes: can send now == true 371 // assumes: num segments > 0 372 // assumes: individual segments are smaller than MTU 373 rfcomm_reserve_packet_buffer(); 374 int mtu = rfcomm_get_max_frame_size(cid); 375 uint8_t * data = rfcomm_get_outgoing_buffer(); 376 int offset = 0; 377 int segment = start_segment; 378 while (segment < num_segments){ 379 int segment_len = get_segment_len(hfp_connection, segment); 380 if ((offset + segment_len) > mtu) break; 381 // append segement 382 store_segment(hfp_connection, segment, data+offset); 383 offset += segment_len; 384 segment++; 385 } 386 rfcomm_send_prepared(cid, offset); 387 return segment; 388 } 389 390 // returns next segment to store 391 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 392 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 393 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 394 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 395 } 396 397 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 398 char buffer[40]; 399 const int size = sizeof(buffer); 400 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 401 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 402 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 403 return send_str_over_rfcomm(cid, buffer); 404 } 405 406 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 407 char buffer[40]; 408 const int size = sizeof(buffer); 409 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 410 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 411 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 412 return send_str_over_rfcomm(cid, buffer); 413 } 414 415 416 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 417 return hfp_ag_send_ok(cid); 418 } 419 420 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 421 char buffer[40]; 422 const int size = sizeof(buffer); 423 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 424 offset += hfp_hf_indicators_join(buffer+offset, size-offset-10); 425 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 426 return send_str_over_rfcomm(cid, buffer); 427 } 428 429 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 430 char buffer[40]; 431 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 432 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 433 return send_str_over_rfcomm(cid, buffer); 434 } 435 436 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 437 char buffer[20]; 438 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 439 return send_str_over_rfcomm(cid, buffer); 440 } 441 442 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 443 char buffer[41]; 444 if (strlen(op.name) == 0){ 445 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 446 } else { 447 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 448 offset += snprintf(buffer+offset, 16, "%s", op.name); 449 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 450 } 451 return send_str_over_rfcomm(cid, buffer); 452 } 453 454 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 455 char buffer[30]; 456 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 457 return send_str_over_rfcomm(cid, buffer); 458 } 459 460 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 461 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 462 } 463 464 static int hfp_ag_send_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 465 return hfp_ag_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 466 } 467 468 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 469 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 470 } 471 472 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 473 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 474 } 475 476 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 477 return hfp_ag_send_cmd_with_int(cid, HFP_RESPONSE_AND_HOLD, state); 478 } 479 480 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 481 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 482 483 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 484 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 485 return HFP_CODEC_MSBC; 486 } 487 } 488 return HFP_CODEC_CVSD; 489 } 490 491 /* state machines */ 492 493 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 494 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4)); 495 } 496 497 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 498 /* events ( == commands): 499 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 500 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 501 hf_trigger_codec_connection_setup == received BCC 502 ag_trigger_codec_connection_setup == received from AG to send BCS 503 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 504 */ 505 506 switch (hfp_connection->codecs_state){ 507 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 508 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 509 break; 510 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 511 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 512 break; 513 default: 514 break; 515 } 516 517 switch (hfp_connection->command){ 518 case HFP_CMD_AVAILABLE_CODECS: 519 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 520 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 521 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 522 return 1; 523 } 524 525 switch (hfp_connection->codecs_state){ 526 case HFP_CODECS_AG_SENT_COMMON_CODEC: 527 case HFP_CODECS_EXCHANGED: 528 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 529 break; 530 default: 531 break; 532 } 533 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 534 return 1; 535 536 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 537 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 538 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 539 return 1; 540 541 case HFP_CMD_AG_SEND_COMMON_CODEC: 542 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 543 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 544 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 545 return 1; 546 547 case HFP_CMD_HF_CONFIRMED_CODEC: 548 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 549 hfp_connection->codecs_state = HFP_CODECS_ERROR; 550 hfp_ag_send_error(hfp_connection->rfcomm_cid); 551 return 1; 552 } 553 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 554 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 555 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 556 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 557 // now, pick link settings 558 559 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 560 return 1; 561 default: 562 break; 563 } 564 return 0; 565 } 566 567 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 568 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 569 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 570 571 // if active call exist, set per-hfp_connection state active, too (when audio is on) 572 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 573 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 574 } 575 // if AG is ringing, also start ringing on the HF 576 if ((hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS) && 577 (hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS)){ 578 hfp_ag_hf_start_ringing(hfp_connection); 579 } 580 } 581 582 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 583 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 584 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 585 int sent = 0; 586 switch(hfp_connection->command){ 587 case HFP_CMD_SUPPORTED_FEATURES: 588 switch(hfp_connection->state){ 589 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 590 case HFP_EXCHANGE_SUPPORTED_FEATURES: 591 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 592 if (has_codec_negotiation_feature(hfp_connection)){ 593 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 594 } else { 595 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 596 } 597 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 598 return 1; 599 default: 600 break; 601 } 602 break; 603 case HFP_CMD_AVAILABLE_CODECS: 604 sent = codecs_exchange_state_machine(hfp_connection); 605 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 606 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 607 } 608 return sent; 609 610 case HFP_CMD_RETRIEVE_AG_INDICATORS: 611 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 612 // HF requested AG Indicators and we did expect it 613 hfp_connection->send_ag_indicators_segment = 0; 614 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 615 // continue below in state switch 616 } 617 break; 618 619 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 620 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 621 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 622 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 623 return 1; 624 625 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 626 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 627 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 628 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 629 } else if (has_hf_indicators_feature(hfp_connection)){ 630 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 631 } else { 632 hfp_ag_slc_established(hfp_connection); 633 } 634 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 635 return 1; 636 637 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 638 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 639 if (has_hf_indicators_feature(hfp_connection)){ 640 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 641 } 642 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 643 if (!has_hf_indicators_feature(hfp_connection)){ 644 hfp_ag_slc_established(hfp_connection); 645 } 646 return 1; 647 648 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 649 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 650 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 651 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 652 return 1; 653 654 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 655 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 656 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 657 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 658 return 1; 659 660 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 661 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 662 hfp_ag_slc_established(hfp_connection); 663 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 664 return 1; 665 default: 666 break; 667 } 668 669 switch (hfp_connection->state){ 670 case HFP_RETRIEVE_INDICATORS: { 671 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 672 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 673 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 674 if (next_segment < num_segments){ 675 // prepare sending of next segment 676 hfp_connection->send_ag_indicators_segment = next_segment; 677 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 678 } else { 679 // done, go to next state 680 hfp_connection->send_ag_indicators_segment = 0; 681 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 682 } 683 return 1; 684 } 685 default: 686 break; 687 } 688 return 0; 689 } 690 691 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 692 int sent = codecs_exchange_state_machine(hfp_connection); 693 if (sent) return 1; 694 695 switch(hfp_connection->command){ 696 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 697 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 698 hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 699 return 1; 700 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 701 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 702 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 703 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 704 hfp_ag_setup_audio_connection(hfp_connection); 705 } else { 706 hfp_ag_send_error(hfp_connection->rfcomm_cid); 707 } 708 return 1; 709 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 710 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 711 return 1; 712 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 713 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 714 return 1; 715 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 716 if (hfp_connection->network_operator.format != 0){ 717 hfp_ag_send_error(hfp_connection->rfcomm_cid); 718 } else { 719 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 720 } 721 return 1; 722 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 723 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 724 return 1; 725 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 726 if (hfp_connection->extended_audio_gateway_error){ 727 hfp_connection->extended_audio_gateway_error = 0; 728 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 729 return 1; 730 } 731 break; 732 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 733 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 734 return 1; 735 default: 736 break; 737 } 738 return 0; 739 } 740 741 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 742 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 743 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 744 745 746 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 747 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 748 hfp_connection->release_audio_connection = 0; 749 gap_disconnect(hfp_connection->sco_handle); 750 return 1; 751 } 752 753 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 754 755 // run codecs exchange 756 int sent = codecs_exchange_state_machine(hfp_connection); 757 if (sent) return 1; 758 759 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 760 if (hfp_connection->establish_audio_connection){ 761 hfp_connection->state = HFP_W4_SCO_CONNECTED; 762 hfp_connection->establish_audio_connection = 0; 763 hfp_setup_synchronous_connection(hfp_connection); 764 return 1; 765 } 766 return 0; 767 } 768 769 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 770 btstack_linked_list_iterator_t it; 771 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 772 773 while (btstack_linked_list_iterator_has_next(&it)){ 774 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 775 if ( & hfp_connection->hfp_timeout == ts) { 776 return hfp_connection; 777 } 778 } 779 return NULL; 780 } 781 782 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 783 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 784 if (!hfp_connection) return; 785 786 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 787 hfp_connection->ag_ring = 1; 788 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 789 790 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 791 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 792 793 hfp_ag_run_for_context(hfp_connection); 794 } 795 796 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 797 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 798 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 799 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 800 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 801 } 802 803 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 804 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 805 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 806 } 807 808 // 809 // transitition implementations for hfp_ag_call_state_machine 810 // 811 812 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 813 if (use_in_band_tone()){ 814 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 815 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 816 } else { 817 hfp_timeout_start(hfp_connection); 818 hfp_connection->ag_ring = 1; 819 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 820 hfp_connection->call_state = HFP_CALL_RINGING; 821 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 822 } 823 } 824 825 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 826 hfp_connection->ag_ring = 0; 827 hfp_connection->ag_send_clip = 0; 828 hfp_timeout_stop(hfp_connection); 829 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 830 } 831 832 static void hfp_ag_trigger_incoming_call(void){ 833 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 834 if (indicator_index < 0) return; 835 836 btstack_linked_list_iterator_t it; 837 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 838 while (btstack_linked_list_iterator_has_next(&it)){ 839 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 840 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 841 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 842 if (hfp_connection->call_state == HFP_CALL_IDLE){ 843 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 844 hfp_ag_hf_start_ringing(hfp_connection); 845 } 846 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 847 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 848 } 849 hfp_ag_run_for_context(hfp_connection); 850 } 851 } 852 853 static void hfp_ag_transfer_indicator(const char * name){ 854 int indicator_index = get_ag_indicator_index_for_name(name); 855 if (indicator_index < 0) return; 856 857 btstack_linked_list_iterator_t it; 858 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 859 while (btstack_linked_list_iterator_has_next(&it)){ 860 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 861 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 862 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 863 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 864 hfp_ag_run_for_context(hfp_connection); 865 } 866 } 867 868 static void hfp_ag_transfer_callsetup_state(void){ 869 hfp_ag_transfer_indicator("callsetup"); 870 } 871 872 static void hfp_ag_transfer_call_state(void){ 873 hfp_ag_transfer_indicator("call"); 874 } 875 876 static void hfp_ag_transfer_callheld_state(void){ 877 hfp_ag_transfer_indicator("callheld"); 878 } 879 880 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 881 882 int call_indicator_index = get_ag_indicator_index_for_name("call"); 883 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 884 885 btstack_linked_list_iterator_t it; 886 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 887 while (btstack_linked_list_iterator_has_next(&it)){ 888 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 889 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 890 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 891 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 892 893 hfp_ag_hf_stop_ringing(hfp_connection); 894 if (hfp_connection == source){ 895 896 if (use_in_band_tone()){ 897 hfp_connection->call_state = HFP_CALL_ACTIVE; 898 } else { 899 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 900 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 901 } 902 903 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 904 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 905 906 } else { 907 hfp_connection->call_state = HFP_CALL_IDLE; 908 } 909 hfp_ag_run_for_context(hfp_connection); 910 } 911 } 912 913 static void hfp_ag_ag_accept_call(void){ 914 915 int call_indicator_index = get_ag_indicator_index_for_name("call"); 916 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 917 918 btstack_linked_list_iterator_t it; 919 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 920 while (btstack_linked_list_iterator_has_next(&it)){ 921 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 922 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 923 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 924 925 hfp_ag_hf_stop_ringing(hfp_connection); 926 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 927 928 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 929 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 930 931 hfp_ag_run_for_context(hfp_connection); 932 break; // only single 933 } 934 } 935 936 static void hfp_ag_trigger_reject_call(void){ 937 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 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 * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 942 if (connection->local_role != HFP_ROLE_AG) continue; 943 if ((connection->call_state != HFP_CALL_RINGING) && 944 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 945 hfp_ag_hf_stop_ringing(connection); 946 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 947 connection->call_state = HFP_CALL_IDLE; 948 hfp_ag_run_for_context(connection); 949 } 950 } 951 952 static void hfp_ag_trigger_terminate_call(void){ 953 int call_indicator_index = get_ag_indicator_index_for_name("call"); 954 955 btstack_linked_list_iterator_t it; 956 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 957 while (btstack_linked_list_iterator_has_next(&it)){ 958 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 959 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 960 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 961 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 962 hfp_connection->call_state = HFP_CALL_IDLE; 963 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 964 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 965 hfp_connection->release_audio_connection = 1; 966 } 967 hfp_ag_run_for_context(hfp_connection); 968 } 969 hfp_ag_emit_simple_event(HFP_SUBEVENT_CALL_TERMINATED); 970 } 971 972 static void hfp_ag_set_callsetup_indicator(void){ 973 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 974 if (!indicator){ 975 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 976 return; 977 }; 978 indicator->status = hfp_gsm_callsetup_status(); 979 } 980 981 static void hfp_ag_set_callheld_indicator(void){ 982 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 983 if (!indicator){ 984 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 985 return; 986 }; 987 indicator->status = hfp_gsm_callheld_status(); 988 } 989 990 static void hfp_ag_set_call_indicator(void){ 991 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 992 if (!indicator){ 993 log_error("hfp_ag_set_call_state: call indicator is missing"); 994 return; 995 }; 996 indicator->status = hfp_gsm_call_status(); 997 } 998 999 static void hfp_ag_stop_ringing(void){ 1000 btstack_linked_list_iterator_t it; 1001 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1002 while (btstack_linked_list_iterator_has_next(&it)){ 1003 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1004 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1005 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1006 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1007 hfp_ag_hf_stop_ringing(hfp_connection); 1008 } 1009 } 1010 1011 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1012 btstack_linked_list_iterator_t it; 1013 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1014 while (btstack_linked_list_iterator_has_next(&it)){ 1015 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1016 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1017 if (hfp_connection->call_state == call_state) return hfp_connection; 1018 } 1019 return NULL; 1020 } 1021 1022 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1023 btstack_linked_list_iterator_t it; 1024 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1025 while (btstack_linked_list_iterator_has_next(&it)){ 1026 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1027 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1028 hfp_connection->send_response_and_hold_status = state + 1; 1029 } 1030 } 1031 1032 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1033 int indicator_index; 1034 switch (hfp_connection->call_state){ 1035 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1036 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1037 // we got event: audio hfp_connection established 1038 hfp_timeout_start(hfp_connection); 1039 hfp_connection->ag_ring = 1; 1040 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1041 hfp_connection->call_state = HFP_CALL_RINGING; 1042 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1043 break; 1044 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1045 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1046 // we got event: audio hfp_connection established 1047 hfp_connection->call_state = HFP_CALL_ACTIVE; 1048 break; 1049 case HFP_CALL_W2_SEND_CALL_WAITING: 1050 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1051 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1052 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1053 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1054 break; 1055 default: 1056 break; 1057 } 1058 return 0; 1059 } 1060 1061 // functions extracted from hfp_ag_call_sm below 1062 static void hfp_ag_handle_reject_incoming_call(void){ 1063 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1064 if (!hfp_connection){ 1065 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1066 return; 1067 } 1068 1069 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1070 hfp_connection->call_state = HFP_CALL_IDLE; 1071 hfp_connection->send_error = 1; 1072 hfp_ag_run_for_context(hfp_connection); 1073 } 1074 1075 // hfp_connection is used to identify originating HF 1076 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1077 int indicator_index; 1078 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1079 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1080 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1081 1082 switch (event){ 1083 case HFP_AG_INCOMING_CALL: 1084 switch (hfp_gsm_call_status()){ 1085 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1086 switch (hfp_gsm_callsetup_status()){ 1087 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1088 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1089 hfp_ag_set_callsetup_indicator(); 1090 hfp_ag_trigger_incoming_call(); 1091 log_info("AG rings"); 1092 break; 1093 default: 1094 break; 1095 } 1096 break; 1097 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1098 switch (hfp_gsm_callsetup_status()){ 1099 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1100 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1101 hfp_ag_set_callsetup_indicator(); 1102 hfp_ag_trigger_incoming_call(); 1103 log_info("AG call waiting"); 1104 break; 1105 default: 1106 break; 1107 } 1108 break; 1109 default: 1110 break; 1111 } 1112 break; 1113 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1114 switch (hfp_gsm_call_status()){ 1115 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1116 switch (hfp_gsm_callsetup_status()){ 1117 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1118 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1119 hfp_ag_set_call_indicator(); 1120 hfp_ag_set_callsetup_indicator(); 1121 hfp_ag_ag_accept_call(); 1122 log_info("AG answers call, accept call by GSM"); 1123 break; 1124 default: 1125 break; 1126 } 1127 break; 1128 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1129 switch (hfp_gsm_callsetup_status()){ 1130 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1131 log_info("AG: current call is placed on hold, incoming call gets active"); 1132 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1133 hfp_ag_set_callsetup_indicator(); 1134 hfp_ag_set_callheld_indicator(); 1135 hfp_ag_transfer_callsetup_state(); 1136 hfp_ag_transfer_callheld_state(); 1137 break; 1138 default: 1139 break; 1140 } 1141 break; 1142 default: 1143 break; 1144 } 1145 break; 1146 1147 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1148 switch (hfp_gsm_call_status()){ 1149 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1150 switch (hfp_gsm_callheld_status()){ 1151 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1152 log_info("AG: joining held call with active call"); 1153 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1154 hfp_ag_set_callheld_indicator(); 1155 hfp_ag_transfer_callheld_state(); 1156 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1157 break; 1158 default: 1159 break; 1160 } 1161 break; 1162 default: 1163 break; 1164 } 1165 break; 1166 1167 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1168 switch (hfp_gsm_call_status()){ 1169 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1170 switch (hfp_gsm_callsetup_status()){ 1171 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1172 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1173 hfp_ag_set_callsetup_indicator(); 1174 hfp_ag_set_call_indicator(); 1175 hfp_ag_hf_accept_call(hfp_connection); 1176 hfp_connection->ok_pending = 1; 1177 log_info("HF answers call, accept call by GSM"); 1178 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1179 break; 1180 default: 1181 break; 1182 } 1183 break; 1184 default: 1185 break; 1186 } 1187 break; 1188 1189 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1190 switch (hfp_gsm_call_status()){ 1191 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1192 switch (hfp_gsm_callsetup_status()){ 1193 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1194 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1195 hfp_ag_response_and_hold_active = 1; 1196 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1197 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1198 // as with regualr call 1199 hfp_ag_set_call_indicator(); 1200 hfp_ag_set_callsetup_indicator(); 1201 hfp_ag_ag_accept_call(); 1202 log_info("AG response and hold - hold by AG"); 1203 break; 1204 default: 1205 break; 1206 } 1207 break; 1208 default: 1209 break; 1210 } 1211 break; 1212 1213 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1214 switch (hfp_gsm_call_status()){ 1215 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1216 switch (hfp_gsm_callsetup_status()){ 1217 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1218 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1219 hfp_ag_response_and_hold_active = 1; 1220 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1221 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1222 // as with regualr call 1223 hfp_ag_set_call_indicator(); 1224 hfp_ag_set_callsetup_indicator(); 1225 hfp_ag_hf_accept_call(hfp_connection); 1226 log_info("AG response and hold - hold by HF"); 1227 break; 1228 default: 1229 break; 1230 } 1231 break; 1232 default: 1233 break; 1234 } 1235 break; 1236 1237 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1238 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1239 if (!hfp_ag_response_and_hold_active) break; 1240 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1241 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1242 hfp_ag_response_and_hold_active = 0; 1243 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1244 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1245 log_info("Held Call accepted and active"); 1246 break; 1247 1248 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1249 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1250 if (!hfp_ag_response_and_hold_active) break; 1251 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1252 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1253 hfp_ag_response_and_hold_active = 0; 1254 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1255 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1256 // from terminate by ag 1257 hfp_ag_set_call_indicator(); 1258 hfp_ag_trigger_terminate_call(); 1259 break; 1260 1261 case HFP_AG_TERMINATE_CALL_BY_HF: 1262 switch (hfp_gsm_call_status()){ 1263 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1264 switch (hfp_gsm_callsetup_status()){ 1265 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1266 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1267 hfp_ag_set_callsetup_indicator(); 1268 hfp_ag_transfer_callsetup_state(); 1269 hfp_ag_trigger_reject_call(); 1270 log_info("HF Rejected Incoming call, AG terminate call"); 1271 break; 1272 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1273 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1274 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1275 hfp_ag_set_callsetup_indicator(); 1276 hfp_ag_transfer_callsetup_state(); 1277 log_info("AG terminate outgoing call process"); 1278 break; 1279 default: 1280 break; 1281 } 1282 break; 1283 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1284 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1285 hfp_ag_set_callsetup_indicator(); 1286 hfp_ag_set_call_indicator(); 1287 hfp_ag_trigger_terminate_call(); 1288 log_info("AG terminate call"); 1289 break; 1290 default: 1291 break; 1292 } 1293 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1294 break; 1295 1296 case HFP_AG_TERMINATE_CALL_BY_AG: 1297 switch (hfp_gsm_call_status()){ 1298 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1299 switch (hfp_gsm_callsetup_status()){ 1300 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1301 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1302 hfp_ag_set_callsetup_indicator(); 1303 hfp_ag_trigger_reject_call(); 1304 log_info("AG Rejected Incoming call, AG terminate call"); 1305 break; 1306 default: 1307 break; 1308 } 1309 break; 1310 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1311 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1312 hfp_ag_set_callsetup_indicator(); 1313 hfp_ag_set_call_indicator(); 1314 hfp_ag_trigger_terminate_call(); 1315 log_info("AG terminate call"); 1316 break; 1317 default: 1318 break; 1319 } 1320 break; 1321 case HFP_AG_CALL_DROPPED: 1322 switch (hfp_gsm_call_status()){ 1323 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1324 switch (hfp_gsm_callsetup_status()){ 1325 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1326 hfp_ag_stop_ringing(); 1327 log_info("Incoming call interrupted"); 1328 break; 1329 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1330 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1331 log_info("Outgoing call interrupted\n"); 1332 log_info("AG notify call dropped\n"); 1333 break; 1334 default: 1335 break; 1336 } 1337 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1338 hfp_ag_set_callsetup_indicator(); 1339 hfp_ag_transfer_callsetup_state(); 1340 hfp_ag_trigger_terminate_call(); 1341 break; 1342 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1343 if (hfp_ag_response_and_hold_active) { 1344 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1345 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1346 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1347 } 1348 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1349 hfp_ag_set_callsetup_indicator(); 1350 hfp_ag_set_call_indicator(); 1351 hfp_ag_trigger_terminate_call(); 1352 log_info("AG notify call dropped"); 1353 break; 1354 default: 1355 break; 1356 } 1357 break; 1358 1359 case HFP_AG_OUTGOING_CALL_INITIATED: 1360 // directly reject call if number of free slots is exceeded 1361 if (!hfp_gsm_call_possible()){ 1362 hfp_connection->send_error = 1; 1363 hfp_ag_run_for_context(hfp_connection); 1364 break; 1365 } 1366 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1367 1368 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1369 1370 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1371 break; 1372 1373 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1374 // directly reject call if number of free slots is exceeded 1375 if (!hfp_gsm_call_possible()){ 1376 hfp_connection->send_error = 1; 1377 hfp_ag_run_for_context(hfp_connection); 1378 break; 1379 } 1380 1381 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1382 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1383 1384 log_info("Redial last number"); 1385 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1386 1387 if (strlen(last_dialed_number) > 0){ 1388 log_info("Last number exists: accept call"); 1389 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1390 } else { 1391 log_info("log_infoLast number missing: reject call"); 1392 hfp_ag_handle_reject_incoming_call(); 1393 } 1394 break; 1395 } 1396 case HFP_AG_OUTGOING_CALL_REJECTED: 1397 hfp_ag_handle_reject_incoming_call(); 1398 break; 1399 1400 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1401 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1402 if (!hfp_connection){ 1403 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1404 break; 1405 } 1406 1407 hfp_connection->ok_pending = 1; 1408 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1409 1410 // trigger callsetup to be 1411 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1412 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1413 1414 hfp_ag_set_callsetup_indicator(); 1415 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1416 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1417 1418 // put current call on hold if active 1419 if (put_call_on_hold){ 1420 log_info("AG putting current call on hold for new outgoing calllog_info"); 1421 hfp_ag_set_callheld_indicator(); 1422 indicator_index = get_ag_indicator_index_for_name("callheld"); 1423 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1424 } 1425 1426 // start audio if needed 1427 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1428 break; 1429 } 1430 case HFP_AG_OUTGOING_CALL_RINGING: 1431 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1432 if (!hfp_connection){ 1433 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1434 break; 1435 } 1436 1437 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1438 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1439 hfp_ag_set_callsetup_indicator(); 1440 hfp_ag_transfer_callsetup_state(); 1441 break; 1442 1443 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1444 // get outgoing call 1445 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1446 if (!hfp_connection){ 1447 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1448 } 1449 if (!hfp_connection){ 1450 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1451 break; 1452 } 1453 1454 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1455 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1456 hfp_connection->call_state = HFP_CALL_ACTIVE; 1457 hfp_ag_set_callsetup_indicator(); 1458 hfp_ag_set_call_indicator(); 1459 hfp_ag_transfer_call_state(); 1460 hfp_ag_transfer_callsetup_state(); 1461 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1462 hfp_ag_set_callheld_indicator(); 1463 hfp_ag_transfer_callheld_state(); 1464 } 1465 break; 1466 } 1467 1468 case HFP_AG_CALL_HOLD_USER_BUSY: 1469 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1470 hfp_ag_set_callsetup_indicator(); 1471 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1472 hfp_connection->call_state = HFP_CALL_ACTIVE; 1473 log_info("AG: Call Waiting, User Busy"); 1474 break; 1475 1476 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1477 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1478 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1479 1480 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1481 if (call_held || call_setup_in_progress){ 1482 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1483 0, NULL); 1484 1485 } 1486 1487 if (call_setup_in_progress){ 1488 log_info("AG: Call Dropped, Accept new call"); 1489 hfp_ag_set_callsetup_indicator(); 1490 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1491 } else { 1492 log_info("AG: Call Dropped, Resume held call"); 1493 } 1494 if (call_held){ 1495 hfp_ag_set_callheld_indicator(); 1496 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1497 } 1498 1499 hfp_connection->call_state = HFP_CALL_ACTIVE; 1500 break; 1501 } 1502 1503 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1504 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1505 // only update if callsetup changed 1506 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1507 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1508 NULL); 1509 1510 if (call_setup_in_progress){ 1511 log_info("AG: Call on Hold, Accept new call"); 1512 hfp_ag_set_callsetup_indicator(); 1513 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1514 } else { 1515 log_info("AG: Swap calls"); 1516 } 1517 1518 hfp_ag_set_callheld_indicator(); 1519 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1520 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1521 hfp_connection->call_state = HFP_CALL_ACTIVE; 1522 break; 1523 } 1524 1525 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1526 // Adds a held call to the conversation. 1527 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1528 log_info("AG: Join 3-way-call"); 1529 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1530 hfp_ag_set_callheld_indicator(); 1531 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1532 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1533 } 1534 hfp_connection->call_state = HFP_CALL_ACTIVE; 1535 break; 1536 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1537 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1538 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1539 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1540 hfp_ag_set_call_indicator(); 1541 hfp_ag_set_callheld_indicator(); 1542 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1543 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1544 hfp_connection->call_state = HFP_CALL_IDLE; 1545 break; 1546 1547 default: 1548 break; 1549 } 1550 1551 1552 } 1553 1554 1555 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1556 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1557 if (!active_call) return; 1558 1559 int idx = active_call->index; 1560 hfp_enhanced_call_dir_t dir = active_call->direction; 1561 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1562 hfp_enhanced_call_mode_t mode = active_call->mode; 1563 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1564 uint8_t type = active_call->clip_type; 1565 char * number = active_call->clip_number; 1566 1567 char buffer[100]; 1568 // TODO: check length of a buffer, to fit the MTU 1569 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1570 if (number){ 1571 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1572 } 1573 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1574 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, 1575 mode, mpty, type, number); 1576 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1577 } 1578 1579 1580 // sends pending command, returns if command was sent 1581 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1582 1583 if (hfp_connection->send_status_of_current_calls){ 1584 hfp_connection->ok_pending = 0; 1585 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1586 hfp_connection->next_call_index++; 1587 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1588 return 1; 1589 } else { 1590 // 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 1591 hfp_connection->next_call_index = 0; 1592 hfp_connection->ok_pending = 1; 1593 hfp_connection->send_status_of_current_calls = 0; 1594 } 1595 } 1596 1597 if (hfp_connection->ag_notify_incoming_call_waiting){ 1598 hfp_connection->ag_notify_incoming_call_waiting = 0; 1599 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1600 return 1; 1601 } 1602 1603 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1604 hfp_connection->ok_pending = 0; 1605 hfp_connection->send_error = 0; 1606 hfp_connection->command = HFP_CMD_NONE; 1607 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1608 return 1; 1609 } 1610 1611 if (hfp_connection->send_error){ 1612 hfp_connection->send_error = 0; 1613 hfp_connection->command = HFP_CMD_NONE; 1614 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1615 return 1; 1616 } 1617 1618 // note: before update AG indicators and ok_pending 1619 if (hfp_connection->send_response_and_hold_status){ 1620 int status = hfp_connection->send_response_and_hold_status - 1; 1621 hfp_connection->send_response_and_hold_status = 0; 1622 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1623 return 1; 1624 } 1625 1626 if (hfp_connection->ok_pending){ 1627 hfp_connection->ok_pending = 0; 1628 hfp_connection->command = HFP_CMD_NONE; 1629 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1630 return 1; 1631 } 1632 1633 // update AG indicators 1634 if (hfp_connection->ag_indicators_status_update_bitmap){ 1635 int i; 1636 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1637 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1638 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1639 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1640 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1641 break; 1642 } 1643 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1644 return 1; 1645 } 1646 } 1647 } 1648 1649 if (hfp_connection->ag_ring){ 1650 hfp_connection->ag_ring = 0; 1651 hfp_connection->command = HFP_CMD_NONE; 1652 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1653 return 1; 1654 } 1655 1656 if (hfp_connection->ag_send_clip){ 1657 hfp_connection->ag_send_clip = 0; 1658 hfp_connection->command = HFP_CMD_NONE; 1659 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1660 return 1; 1661 } 1662 1663 if (hfp_connection->send_phone_number_for_voice_tag){ 1664 hfp_connection->send_phone_number_for_voice_tag = 0; 1665 hfp_connection->command = HFP_CMD_NONE; 1666 hfp_connection->ok_pending = 1; 1667 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1668 return 1; 1669 } 1670 1671 if (hfp_connection->send_subscriber_number){ 1672 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1673 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1674 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1675 } else { 1676 hfp_connection->send_subscriber_number = 0; 1677 hfp_connection->next_subscriber_number_to_send = 0; 1678 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1679 } 1680 hfp_connection->command = HFP_CMD_NONE; 1681 return 1; 1682 } 1683 1684 if (hfp_connection->send_microphone_gain){ 1685 hfp_connection->send_microphone_gain = 0; 1686 hfp_connection->command = HFP_CMD_NONE; 1687 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1688 return 1; 1689 } 1690 1691 if (hfp_connection->send_speaker_gain){ 1692 hfp_connection->send_speaker_gain = 0; 1693 hfp_connection->command = HFP_CMD_NONE; 1694 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1695 return 1; 1696 } 1697 1698 if (hfp_connection->send_ag_status_indicators){ 1699 hfp_connection->send_ag_status_indicators = 0; 1700 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1701 return 1; 1702 } 1703 1704 return 0; 1705 } 1706 1707 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1708 1709 btstack_assert(hfp_connection != NULL); 1710 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1711 1712 // during SDP query, RFCOMM CID is not set 1713 if (hfp_connection->rfcomm_cid == 0) return; 1714 1715 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1716 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1717 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1718 return; 1719 } 1720 1721 int cmd_sent = hfp_ag_send_commands(hfp_connection); 1722 1723 // trigger codec exchange if requested by app 1724 if (hfp_connection->trigger_codec_exchange){ 1725 log_info("trigger codec, command %u, codec state %u", hfp_connection->command, hfp_connection->codecs_state); 1726 } 1727 1728 if (hfp_connection->trigger_codec_exchange && (hfp_connection->command == HFP_CMD_NONE)){ 1729 switch (hfp_connection->codecs_state){ 1730 case HFP_CODECS_IDLE: 1731 case HFP_CODECS_RECEIVED_LIST: 1732 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1733 case HFP_CODECS_ERROR: 1734 hfp_connection->trigger_codec_exchange = 0; 1735 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1736 break; 1737 default: 1738 break; 1739 } 1740 } 1741 1742 if (!cmd_sent){ 1743 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1744 } 1745 1746 if (!cmd_sent){ 1747 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1748 } 1749 1750 if (!cmd_sent){ 1751 cmd_sent = call_setup_state_machine(hfp_connection); 1752 } 1753 1754 if (!cmd_sent){ 1755 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1756 } 1757 1758 if ((hfp_connection->command == HFP_CMD_NONE) && !cmd_sent){ 1759 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1760 switch(hfp_connection->state){ 1761 case HFP_W2_DISCONNECT_RFCOMM: 1762 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1763 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1764 break; 1765 default: 1766 break; 1767 } 1768 } 1769 1770 if (cmd_sent){ 1771 hfp_connection->command = HFP_CMD_NONE; 1772 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1773 } 1774 } 1775 1776 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1777 int i; 1778 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1779 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1780 if (indicator->uuid == number){ 1781 return indicator; 1782 } 1783 } 1784 return NULL; 1785 } 1786 1787 static int hfp_parser_is_end_of_line(uint8_t byte){ 1788 return (byte == '\n') || (byte == '\r'); 1789 } 1790 1791 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1792 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1793 1794 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1795 if (size < 1) return; 1796 1797 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1798 if (!hfp_connection) return; 1799 1800 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 1801 1802 // process messages byte-wise 1803 int pos; 1804 for (pos = 0; pos < size ; pos++){ 1805 hfp_parse(hfp_connection, packet[pos], 0); 1806 1807 // parse until end of line 1808 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1809 1810 hfp_generic_status_indicator_t * indicator; 1811 switch(hfp_connection->command){ 1812 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1813 if (hfp_ag_response_and_hold_active){ 1814 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1815 } 1816 hfp_connection->ok_pending = 1; 1817 break; 1818 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1819 switch(hfp_connection->ag_response_and_hold_action){ 1820 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1821 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1822 break; 1823 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1824 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1825 break; 1826 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1827 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1828 break; 1829 default: 1830 break; 1831 } 1832 hfp_connection->ok_pending = 1; 1833 break; 1834 case HFP_CMD_HF_INDICATOR_STATUS: 1835 hfp_connection->command = HFP_CMD_NONE; 1836 // find indicator by assigned number 1837 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1838 if (!indicator){ 1839 hfp_connection->send_error = 1; 1840 break; 1841 } 1842 switch (indicator->uuid){ 1843 case 1: // enhanced security 1844 if (hfp_connection->parser_indicator_value > 1) { 1845 hfp_connection->send_error = 1; 1846 return; 1847 } 1848 log_info("HF Indicator 'enhanced security' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1849 break; 1850 case 2: // battery level 1851 if (hfp_connection->parser_indicator_value > 100){ 1852 hfp_connection->send_error = 1; 1853 return; 1854 } 1855 log_info("HF Indicator 'battery' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1856 break; 1857 default: 1858 log_info("HF Indicator unknown set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1859 break; 1860 } 1861 hfp_connection->ok_pending = 1; 1862 break; 1863 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1864 // expected by SLC state machine 1865 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1866 hfp_connection->send_ag_indicators_segment = 0; 1867 hfp_connection->send_ag_status_indicators = 1; 1868 break; 1869 case HFP_CMD_LIST_CURRENT_CALLS: 1870 hfp_connection->command = HFP_CMD_NONE; 1871 hfp_connection->next_call_index = 0; 1872 hfp_connection->send_status_of_current_calls = 1; 1873 break; 1874 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1875 if (subscriber_numbers_count == 0){ 1876 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1877 break; 1878 } 1879 hfp_connection->next_subscriber_number_to_send = 0; 1880 hfp_connection->send_subscriber_number = 1; 1881 break; 1882 case HFP_CMD_TRANSMIT_DTMF_CODES: 1883 { 1884 hfp_connection->command = HFP_CMD_NONE; 1885 char buffer[2]; 1886 buffer[0] = (char) hfp_connection->ag_dtmf_code; 1887 buffer[1] = 0; 1888 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 1889 break; 1890 } 1891 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1892 hfp_connection->command = HFP_CMD_NONE; 1893 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1894 break; 1895 case HFP_CMD_TURN_OFF_EC_AND_NR: 1896 hfp_connection->command = HFP_CMD_NONE; 1897 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1898 hfp_connection->ok_pending = 1; 1899 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1900 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1901 } else { 1902 hfp_connection->send_error = 1; 1903 } 1904 break; 1905 case HFP_CMD_CALL_ANSWERED: 1906 hfp_connection->command = HFP_CMD_NONE; 1907 log_info("HFP: ATA"); 1908 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1909 break; 1910 case HFP_CMD_HANG_UP_CALL: 1911 hfp_connection->command = HFP_CMD_NONE; 1912 hfp_connection->ok_pending = 1; 1913 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1914 break; 1915 case HFP_CMD_CALL_HOLD: { 1916 hfp_connection->command = HFP_CMD_NONE; 1917 hfp_connection->ok_pending = 1; 1918 1919 switch (hfp_connection->ag_call_hold_action){ 1920 case 0: 1921 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1922 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1923 break; 1924 case 1: 1925 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1926 // Where both a held and a waiting call exist, the above procedures shall apply to the 1927 // waiting call (i.e., not to the held call) in conflicting situation. 1928 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1929 break; 1930 case 2: 1931 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1932 // Where both a held and a waiting call exist, the above procedures shall apply to the 1933 // waiting call (i.e., not to the held call) in conflicting situation. 1934 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1935 break; 1936 case 3: 1937 // Adds a held call to the conversation. 1938 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1939 break; 1940 case 4: 1941 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1942 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1943 break; 1944 default: 1945 break; 1946 } 1947 hfp_connection->call_index = 0; 1948 break; 1949 } 1950 case HFP_CMD_CALL_PHONE_NUMBER: 1951 hfp_connection->command = HFP_CMD_NONE; 1952 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1953 break; 1954 case HFP_CMD_REDIAL_LAST_NUMBER: 1955 hfp_connection->command = HFP_CMD_NONE; 1956 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1957 break; 1958 case HFP_CMD_ENABLE_CLIP: 1959 hfp_connection->command = HFP_CMD_NONE; 1960 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1961 hfp_connection->ok_pending = 1; 1962 break; 1963 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1964 hfp_connection->command = HFP_CMD_NONE; 1965 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1966 hfp_connection->ok_pending = 1; 1967 break; 1968 case HFP_CMD_SET_SPEAKER_GAIN: 1969 hfp_connection->command = HFP_CMD_NONE; 1970 hfp_connection->ok_pending = 1; 1971 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 1972 break; 1973 case HFP_CMD_SET_MICROPHONE_GAIN: 1974 hfp_connection->command = HFP_CMD_NONE; 1975 hfp_connection->ok_pending = 1; 1976 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 1977 break; 1978 default: 1979 break; 1980 } 1981 } 1982 } 1983 1984 static void hfp_ag_run(void){ 1985 btstack_linked_list_iterator_t it; 1986 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1987 while (btstack_linked_list_iterator_has_next(&it)){ 1988 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1989 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1990 hfp_ag_run_for_context(hfp_connection); 1991 } 1992 } 1993 1994 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1995 switch (packet_type){ 1996 case RFCOMM_DATA_PACKET: 1997 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 1998 break; 1999 case HCI_EVENT_PACKET: 2000 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2001 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2002 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2003 return; 2004 } 2005 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2006 break; 2007 default: 2008 break; 2009 } 2010 2011 hfp_ag_run(); 2012 } 2013 2014 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2015 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2016 2017 // allow for sco established -> ring transition 2018 if (packet_type != HCI_EVENT_PACKET) return; 2019 if (hci_event_packet_get_type(packet) != HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE) return; 2020 hfp_ag_run(); 2021 } 2022 2023 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2024 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2025 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2026 return; 2027 } 2028 int i; 2029 hfp_codecs_nr = codecs_nr; 2030 for (i=0; i < codecs_nr; i++){ 2031 hfp_codecs[i] = codecs[i]; 2032 } 2033 } 2034 2035 void hfp_ag_init_supported_features(uint32_t supported_features){ 2036 hfp_supported_features = supported_features; 2037 } 2038 2039 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2040 hfp_ag_indicators_nr = ag_indicators_nr; 2041 (void)memcpy(hfp_ag_indicators, ag_indicators, 2042 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2043 } 2044 2045 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2046 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2047 hfp_generic_status_indicators_nr = hf_indicators_nr; 2048 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2049 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2050 } 2051 2052 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2053 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2054 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2055 call_hold_services_nr * sizeof(char *)); 2056 } 2057 2058 2059 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2060 2061 hfp_init(); 2062 2063 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2064 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2065 2066 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2067 2068 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2069 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2070 2071 hfp_ag_response_and_hold_active = 0; 2072 subscriber_numbers = NULL; 2073 subscriber_numbers_count = 0; 2074 2075 hfp_gsm_init(); 2076 } 2077 2078 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2079 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2080 } 2081 2082 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2083 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2084 if (!hfp_connection){ 2085 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2086 return; 2087 } 2088 hfp_release_service_level_connection(hfp_connection); 2089 hfp_ag_run_for_context(hfp_connection); 2090 } 2091 2092 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2093 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2094 if (!hfp_connection){ 2095 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2096 return; 2097 } 2098 hfp_connection->extended_audio_gateway_error = 0; 2099 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2100 return; 2101 } 2102 hfp_connection->extended_audio_gateway_error = error; 2103 hfp_ag_run_for_context(hfp_connection); 2104 } 2105 2106 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2107 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2108 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2109 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2110 2111 hfp_connection->establish_audio_connection = 1; 2112 if (!has_codec_negotiation_feature(hfp_connection)){ 2113 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2114 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2115 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2116 // now, pick link settings 2117 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2118 return; 2119 } 2120 2121 hfp_connection->trigger_codec_exchange = 1; 2122 } 2123 2124 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2125 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2126 if (!hfp_connection){ 2127 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2128 return; 2129 } 2130 hfp_connection->trigger_codec_exchange = 0; 2131 hfp_connection->establish_audio_connection = 0; 2132 hfp_ag_setup_audio_connection(hfp_connection); 2133 hfp_ag_run_for_context(hfp_connection); 2134 } 2135 2136 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2137 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2138 if (!hfp_connection){ 2139 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2140 return; 2141 } 2142 hfp_release_audio_connection(hfp_connection); 2143 hfp_ag_run_for_context(hfp_connection); 2144 } 2145 2146 /** 2147 * @brief Enable in-band ring tone 2148 */ 2149 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2150 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2151 return; 2152 } 2153 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2154 2155 btstack_linked_list_iterator_t it; 2156 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2157 while (btstack_linked_list_iterator_has_next(&it)){ 2158 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2159 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2160 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2161 hfp_ag_run_for_context(hfp_connection); 2162 } 2163 } 2164 2165 /** 2166 * @brief Called from GSM 2167 */ 2168 void hfp_ag_incoming_call(void){ 2169 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2170 } 2171 2172 /** 2173 * @brief number is stored. 2174 */ 2175 void hfp_ag_set_clip(uint8_t type, const char * number){ 2176 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2177 } 2178 2179 void hfp_ag_call_dropped(void){ 2180 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2181 } 2182 2183 // call from AG UI 2184 void hfp_ag_answer_incoming_call(void){ 2185 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2186 } 2187 2188 void hfp_ag_join_held_call(void){ 2189 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2190 } 2191 2192 void hfp_ag_terminate_call(void){ 2193 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2194 } 2195 2196 void hfp_ag_outgoing_call_ringing(void){ 2197 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2198 } 2199 2200 void hfp_ag_outgoing_call_established(void){ 2201 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2202 } 2203 2204 void hfp_ag_outgoing_call_rejected(void){ 2205 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2206 } 2207 2208 void hfp_ag_outgoing_call_accepted(void){ 2209 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2210 } 2211 2212 void hfp_ag_hold_incoming_call(void){ 2213 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2214 } 2215 2216 void hfp_ag_accept_held_incoming_call(void) { 2217 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2218 } 2219 2220 void hfp_ag_reject_held_incoming_call(void){ 2221 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2222 } 2223 2224 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2225 int indicator_index = get_ag_indicator_index_for_name(name); 2226 if (indicator_index < 0) return; 2227 hfp_ag_indicators[indicator_index].status = value; 2228 2229 2230 btstack_linked_list_iterator_t it; 2231 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2232 while (btstack_linked_list_iterator_has_next(&it)){ 2233 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2234 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2235 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2236 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2237 continue; 2238 } 2239 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2240 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2241 hfp_ag_run_for_context(hfp_connection); 2242 } 2243 } 2244 2245 void hfp_ag_set_registration_status(int status){ 2246 hfp_ag_set_ag_indicator("service", status); 2247 } 2248 2249 void hfp_ag_set_signal_strength(int strength){ 2250 hfp_ag_set_ag_indicator("signal", strength); 2251 } 2252 2253 void hfp_ag_set_roaming_status(int status){ 2254 hfp_ag_set_ag_indicator("roam", status); 2255 } 2256 2257 void hfp_ag_set_battery_level(int level){ 2258 hfp_ag_set_ag_indicator("battchg", level); 2259 } 2260 2261 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2262 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2263 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2264 if (!hfp_connection){ 2265 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2266 return; 2267 } 2268 2269 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2270 log_info("AG cannot acivate voice recognition - not supported by HF"); 2271 return; 2272 } 2273 2274 if (activate){ 2275 hfp_ag_establish_audio_connection(acl_handle); 2276 } 2277 2278 hfp_connection->ag_activate_voice_recognition = activate; 2279 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2280 hfp_ag_run_for_context(hfp_connection); 2281 } 2282 2283 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2284 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2285 if (!hfp_connection){ 2286 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2287 return; 2288 } 2289 if (hfp_connection->microphone_gain != gain){ 2290 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2291 hfp_connection->microphone_gain = gain; 2292 hfp_connection->send_microphone_gain = 1; 2293 } 2294 hfp_ag_run_for_context(hfp_connection); 2295 } 2296 2297 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2298 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2299 if (!hfp_connection){ 2300 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2301 return; 2302 } 2303 if (hfp_connection->speaker_gain != gain){ 2304 hfp_connection->speaker_gain = gain; 2305 hfp_connection->send_speaker_gain = 1; 2306 } 2307 hfp_ag_run_for_context(hfp_connection); 2308 } 2309 2310 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2311 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2312 if (!hfp_connection){ 2313 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2314 return; 2315 } 2316 hfp_ag_set_clip(0, number); 2317 hfp_connection->send_phone_number_for_voice_tag = 1; 2318 } 2319 2320 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2321 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2322 if (!hfp_connection){ 2323 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2324 return; 2325 } 2326 hfp_connection->send_error = 1; 2327 } 2328 2329 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2330 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2331 if (!hfp_connection){ 2332 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2333 return; 2334 } 2335 hfp_connection->ok_pending = 1; 2336 } 2337 2338 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2339 subscriber_numbers = numbers; 2340 subscriber_numbers_count = numbers_count; 2341 } 2342 2343 void hfp_ag_clear_last_dialed_number(void){ 2344 hfp_gsm_clear_last_dialed_number(); 2345 } 2346 2347 void hfp_ag_notify_incoming_call_waiting(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 if (!hfp_connection->call_waiting_notification_enabled) return; 2354 2355 hfp_connection->ag_notify_incoming_call_waiting = 1; 2356 hfp_ag_run_for_context(hfp_connection); 2357 } 2358 2359 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){ 2360 if (!name){ 2361 name = default_hfp_ag_service_name; 2362 } 2363 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2364 2365 /* 2366 * 0x01 – Ability to reject a call 2367 * 0x00 – No ability to reject a call 2368 */ 2369 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2370 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2371 2372 // Construct SupportedFeatures for SDP bitmap: 2373 // 2374 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2375 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2376 // 2377 // Wide band speech (bit 5) requires Codec negotiation 2378 // 2379 uint16_t sdp_features = supported_features & 0x1f; 2380 if (wide_band_speech && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2381 sdp_features |= 1 << 5; 2382 } 2383 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2384 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2385 } 2386 2387 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2388 if (callback == NULL){ 2389 log_error("hfp_ag_register_packet_handler called with NULL callback"); 2390 return; 2391 } 2392 hfp_ag_callback = callback; 2393 hfp_set_ag_callback(callback); 2394 } 2395