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 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 559 #ifdef ENABLE_CC256X_ASSISTED_HFP 560 hfp_cc256x_prepare_for_sco(hfp_connection); 561 #endif 562 return 1; 563 default: 564 break; 565 } 566 return 0; 567 } 568 569 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 570 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 571 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 572 573 // if active call exist, set per-hfp_connection state active, too (when audio is on) 574 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 575 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 576 } 577 // if AG is ringing, also start ringing on the HF 578 if ((hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS) && 579 (hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS)){ 580 hfp_ag_hf_start_ringing(hfp_connection); 581 } 582 } 583 584 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 585 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 586 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 587 int sent = 0; 588 switch(hfp_connection->command){ 589 case HFP_CMD_SUPPORTED_FEATURES: 590 switch(hfp_connection->state){ 591 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 592 case HFP_EXCHANGE_SUPPORTED_FEATURES: 593 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 594 if (has_codec_negotiation_feature(hfp_connection)){ 595 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 596 } else { 597 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 598 } 599 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 600 return 1; 601 default: 602 break; 603 } 604 break; 605 case HFP_CMD_AVAILABLE_CODECS: 606 sent = codecs_exchange_state_machine(hfp_connection); 607 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 608 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 609 } 610 return sent; 611 612 case HFP_CMD_RETRIEVE_AG_INDICATORS: 613 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 614 // HF requested AG Indicators and we did expect it 615 hfp_connection->send_ag_indicators_segment = 0; 616 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 617 // continue below in state switch 618 } 619 break; 620 621 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 622 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 623 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 624 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 625 return 1; 626 627 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 628 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 629 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 630 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 631 } else if (has_hf_indicators_feature(hfp_connection)){ 632 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 633 } else { 634 hfp_ag_slc_established(hfp_connection); 635 } 636 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 637 return 1; 638 639 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 640 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 641 if (has_hf_indicators_feature(hfp_connection)){ 642 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 643 } 644 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 645 if (!has_hf_indicators_feature(hfp_connection)){ 646 hfp_ag_slc_established(hfp_connection); 647 } 648 return 1; 649 650 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 651 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 652 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 653 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 654 return 1; 655 656 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 657 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 658 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 659 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 660 return 1; 661 662 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 663 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 664 hfp_ag_slc_established(hfp_connection); 665 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 666 return 1; 667 default: 668 break; 669 } 670 671 switch (hfp_connection->state){ 672 case HFP_RETRIEVE_INDICATORS: { 673 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 674 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 675 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 676 if (next_segment < num_segments){ 677 // prepare sending of next segment 678 hfp_connection->send_ag_indicators_segment = next_segment; 679 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 680 } else { 681 // done, go to next state 682 hfp_connection->send_ag_indicators_segment = 0; 683 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 684 } 685 return 1; 686 } 687 default: 688 break; 689 } 690 return 0; 691 } 692 693 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 694 int sent = codecs_exchange_state_machine(hfp_connection); 695 if (sent) return 1; 696 697 switch(hfp_connection->command){ 698 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 699 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 700 hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 701 return 1; 702 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 703 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 704 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 705 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 706 hfp_ag_setup_audio_connection(hfp_connection); 707 } else { 708 hfp_ag_send_error(hfp_connection->rfcomm_cid); 709 } 710 return 1; 711 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 712 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 713 return 1; 714 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 715 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 716 return 1; 717 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 718 if (hfp_connection->network_operator.format != 0){ 719 hfp_ag_send_error(hfp_connection->rfcomm_cid); 720 } else { 721 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 722 } 723 return 1; 724 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 725 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 726 return 1; 727 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 728 if (hfp_connection->extended_audio_gateway_error){ 729 hfp_connection->extended_audio_gateway_error = 0; 730 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 731 return 1; 732 } 733 break; 734 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 735 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 736 return 1; 737 default: 738 break; 739 } 740 return 0; 741 } 742 743 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 744 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 745 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 746 747 748 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 749 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 750 hfp_connection->release_audio_connection = 0; 751 gap_disconnect(hfp_connection->sco_handle); 752 return 1; 753 } 754 755 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 756 757 // run codecs exchange 758 int sent = codecs_exchange_state_machine(hfp_connection); 759 if (sent) return 1; 760 761 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 762 if (hfp_connection->establish_audio_connection){ 763 hfp_connection->state = HFP_W4_SCO_CONNECTED; 764 hfp_connection->establish_audio_connection = 0; 765 hfp_setup_synchronous_connection(hfp_connection); 766 return 1; 767 } 768 return 0; 769 } 770 771 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 772 btstack_linked_list_iterator_t it; 773 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 774 775 while (btstack_linked_list_iterator_has_next(&it)){ 776 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 777 if ( & hfp_connection->hfp_timeout == ts) { 778 return hfp_connection; 779 } 780 } 781 return NULL; 782 } 783 784 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 785 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 786 if (!hfp_connection) return; 787 788 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 789 hfp_connection->ag_ring = 1; 790 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 791 792 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 793 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 794 795 hfp_ag_run_for_context(hfp_connection); 796 } 797 798 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 799 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 800 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 801 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 802 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 803 } 804 805 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 806 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 807 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 808 } 809 810 // 811 // transitition implementations for hfp_ag_call_state_machine 812 // 813 814 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 815 if (use_in_band_tone()){ 816 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 817 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 818 } else { 819 hfp_timeout_start(hfp_connection); 820 hfp_connection->ag_ring = 1; 821 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 822 hfp_connection->call_state = HFP_CALL_RINGING; 823 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 824 } 825 } 826 827 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 828 hfp_connection->ag_ring = 0; 829 hfp_connection->ag_send_clip = 0; 830 hfp_timeout_stop(hfp_connection); 831 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 832 } 833 834 static void hfp_ag_trigger_incoming_call(void){ 835 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 836 if (indicator_index < 0) return; 837 838 btstack_linked_list_iterator_t it; 839 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 840 while (btstack_linked_list_iterator_has_next(&it)){ 841 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 842 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 843 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 844 if (hfp_connection->call_state == HFP_CALL_IDLE){ 845 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 846 hfp_ag_hf_start_ringing(hfp_connection); 847 } 848 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 849 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 850 } 851 hfp_ag_run_for_context(hfp_connection); 852 } 853 } 854 855 static void hfp_ag_transfer_indicator(const char * name){ 856 int indicator_index = get_ag_indicator_index_for_name(name); 857 if (indicator_index < 0) return; 858 859 btstack_linked_list_iterator_t it; 860 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 861 while (btstack_linked_list_iterator_has_next(&it)){ 862 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 863 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 864 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 865 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 866 hfp_ag_run_for_context(hfp_connection); 867 } 868 } 869 870 static void hfp_ag_transfer_callsetup_state(void){ 871 hfp_ag_transfer_indicator("callsetup"); 872 } 873 874 static void hfp_ag_transfer_call_state(void){ 875 hfp_ag_transfer_indicator("call"); 876 } 877 878 static void hfp_ag_transfer_callheld_state(void){ 879 hfp_ag_transfer_indicator("callheld"); 880 } 881 882 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 883 884 int call_indicator_index = get_ag_indicator_index_for_name("call"); 885 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 886 887 btstack_linked_list_iterator_t it; 888 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 889 while (btstack_linked_list_iterator_has_next(&it)){ 890 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 891 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 892 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 893 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 894 895 hfp_ag_hf_stop_ringing(hfp_connection); 896 if (hfp_connection == source){ 897 898 if (use_in_band_tone()){ 899 hfp_connection->call_state = HFP_CALL_ACTIVE; 900 } else { 901 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 902 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 903 } 904 905 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 906 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 907 908 } else { 909 hfp_connection->call_state = HFP_CALL_IDLE; 910 } 911 hfp_ag_run_for_context(hfp_connection); 912 } 913 } 914 915 static void hfp_ag_ag_accept_call(void){ 916 917 int call_indicator_index = get_ag_indicator_index_for_name("call"); 918 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 919 920 btstack_linked_list_iterator_t it; 921 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 922 while (btstack_linked_list_iterator_has_next(&it)){ 923 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 924 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 925 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 926 927 hfp_ag_hf_stop_ringing(hfp_connection); 928 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 929 930 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 931 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 932 933 hfp_ag_run_for_context(hfp_connection); 934 break; // only single 935 } 936 } 937 938 static void hfp_ag_trigger_reject_call(void){ 939 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 940 btstack_linked_list_iterator_t it; 941 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 942 while (btstack_linked_list_iterator_has_next(&it)){ 943 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 944 if (connection->local_role != HFP_ROLE_AG) continue; 945 if ((connection->call_state != HFP_CALL_RINGING) && 946 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 947 hfp_ag_hf_stop_ringing(connection); 948 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 949 connection->call_state = HFP_CALL_IDLE; 950 hfp_ag_run_for_context(connection); 951 } 952 } 953 954 static void hfp_ag_trigger_terminate_call(void){ 955 int call_indicator_index = get_ag_indicator_index_for_name("call"); 956 957 btstack_linked_list_iterator_t it; 958 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 959 while (btstack_linked_list_iterator_has_next(&it)){ 960 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 961 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 962 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 963 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 964 hfp_connection->call_state = HFP_CALL_IDLE; 965 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 966 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 967 hfp_connection->release_audio_connection = 1; 968 } 969 hfp_ag_run_for_context(hfp_connection); 970 } 971 hfp_ag_emit_simple_event(HFP_SUBEVENT_CALL_TERMINATED); 972 } 973 974 static void hfp_ag_set_callsetup_indicator(void){ 975 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 976 if (!indicator){ 977 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 978 return; 979 }; 980 indicator->status = hfp_gsm_callsetup_status(); 981 } 982 983 static void hfp_ag_set_callheld_indicator(void){ 984 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 985 if (!indicator){ 986 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 987 return; 988 }; 989 indicator->status = hfp_gsm_callheld_status(); 990 } 991 992 static void hfp_ag_set_call_indicator(void){ 993 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 994 if (!indicator){ 995 log_error("hfp_ag_set_call_state: call indicator is missing"); 996 return; 997 }; 998 indicator->status = hfp_gsm_call_status(); 999 } 1000 1001 static void hfp_ag_stop_ringing(void){ 1002 btstack_linked_list_iterator_t it; 1003 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1004 while (btstack_linked_list_iterator_has_next(&it)){ 1005 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1006 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1007 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1008 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1009 hfp_ag_hf_stop_ringing(hfp_connection); 1010 } 1011 } 1012 1013 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1014 btstack_linked_list_iterator_t it; 1015 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1016 while (btstack_linked_list_iterator_has_next(&it)){ 1017 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1018 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1019 if (hfp_connection->call_state == call_state) return hfp_connection; 1020 } 1021 return NULL; 1022 } 1023 1024 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1025 btstack_linked_list_iterator_t it; 1026 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1027 while (btstack_linked_list_iterator_has_next(&it)){ 1028 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1029 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1030 hfp_connection->send_response_and_hold_status = state + 1; 1031 } 1032 } 1033 1034 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1035 int indicator_index; 1036 switch (hfp_connection->call_state){ 1037 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1038 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1039 // we got event: audio hfp_connection established 1040 hfp_timeout_start(hfp_connection); 1041 hfp_connection->ag_ring = 1; 1042 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1043 hfp_connection->call_state = HFP_CALL_RINGING; 1044 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1045 break; 1046 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1047 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1048 // we got event: audio hfp_connection established 1049 hfp_connection->call_state = HFP_CALL_ACTIVE; 1050 break; 1051 case HFP_CALL_W2_SEND_CALL_WAITING: 1052 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1053 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1054 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1055 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1056 break; 1057 default: 1058 break; 1059 } 1060 return 0; 1061 } 1062 1063 // functions extracted from hfp_ag_call_sm below 1064 static void hfp_ag_handle_reject_incoming_call(void){ 1065 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1066 if (!hfp_connection){ 1067 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1068 return; 1069 } 1070 1071 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1072 hfp_connection->call_state = HFP_CALL_IDLE; 1073 hfp_connection->send_error = 1; 1074 hfp_ag_run_for_context(hfp_connection); 1075 } 1076 1077 // hfp_connection is used to identify originating HF 1078 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1079 int indicator_index; 1080 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1081 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1082 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1083 1084 switch (event){ 1085 case HFP_AG_INCOMING_CALL: 1086 switch (hfp_gsm_call_status()){ 1087 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1088 switch (hfp_gsm_callsetup_status()){ 1089 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1090 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1091 hfp_ag_set_callsetup_indicator(); 1092 hfp_ag_trigger_incoming_call(); 1093 log_info("AG rings"); 1094 break; 1095 default: 1096 break; 1097 } 1098 break; 1099 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1100 switch (hfp_gsm_callsetup_status()){ 1101 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1102 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1103 hfp_ag_set_callsetup_indicator(); 1104 hfp_ag_trigger_incoming_call(); 1105 log_info("AG call waiting"); 1106 break; 1107 default: 1108 break; 1109 } 1110 break; 1111 default: 1112 break; 1113 } 1114 break; 1115 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1116 switch (hfp_gsm_call_status()){ 1117 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1118 switch (hfp_gsm_callsetup_status()){ 1119 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1120 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1121 hfp_ag_set_call_indicator(); 1122 hfp_ag_set_callsetup_indicator(); 1123 hfp_ag_ag_accept_call(); 1124 log_info("AG answers call, accept call by GSM"); 1125 break; 1126 default: 1127 break; 1128 } 1129 break; 1130 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1131 switch (hfp_gsm_callsetup_status()){ 1132 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1133 log_info("AG: current call is placed on hold, incoming call gets active"); 1134 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1135 hfp_ag_set_callsetup_indicator(); 1136 hfp_ag_set_callheld_indicator(); 1137 hfp_ag_transfer_callsetup_state(); 1138 hfp_ag_transfer_callheld_state(); 1139 break; 1140 default: 1141 break; 1142 } 1143 break; 1144 default: 1145 break; 1146 } 1147 break; 1148 1149 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1150 switch (hfp_gsm_call_status()){ 1151 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1152 switch (hfp_gsm_callheld_status()){ 1153 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1154 log_info("AG: joining held call with active call"); 1155 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1156 hfp_ag_set_callheld_indicator(); 1157 hfp_ag_transfer_callheld_state(); 1158 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1159 break; 1160 default: 1161 break; 1162 } 1163 break; 1164 default: 1165 break; 1166 } 1167 break; 1168 1169 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1170 switch (hfp_gsm_call_status()){ 1171 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1172 switch (hfp_gsm_callsetup_status()){ 1173 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1174 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1175 hfp_ag_set_callsetup_indicator(); 1176 hfp_ag_set_call_indicator(); 1177 hfp_ag_hf_accept_call(hfp_connection); 1178 hfp_connection->ok_pending = 1; 1179 log_info("HF answers call, accept call by GSM"); 1180 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1181 break; 1182 default: 1183 break; 1184 } 1185 break; 1186 default: 1187 break; 1188 } 1189 break; 1190 1191 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1192 switch (hfp_gsm_call_status()){ 1193 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1194 switch (hfp_gsm_callsetup_status()){ 1195 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1196 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1197 hfp_ag_response_and_hold_active = 1; 1198 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1199 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1200 // as with regualr call 1201 hfp_ag_set_call_indicator(); 1202 hfp_ag_set_callsetup_indicator(); 1203 hfp_ag_ag_accept_call(); 1204 log_info("AG response and hold - hold by AG"); 1205 break; 1206 default: 1207 break; 1208 } 1209 break; 1210 default: 1211 break; 1212 } 1213 break; 1214 1215 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1216 switch (hfp_gsm_call_status()){ 1217 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1218 switch (hfp_gsm_callsetup_status()){ 1219 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1220 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1221 hfp_ag_response_and_hold_active = 1; 1222 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1223 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1224 // as with regualr call 1225 hfp_ag_set_call_indicator(); 1226 hfp_ag_set_callsetup_indicator(); 1227 hfp_ag_hf_accept_call(hfp_connection); 1228 log_info("AG response and hold - hold by HF"); 1229 break; 1230 default: 1231 break; 1232 } 1233 break; 1234 default: 1235 break; 1236 } 1237 break; 1238 1239 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1240 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1241 if (!hfp_ag_response_and_hold_active) break; 1242 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1243 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1244 hfp_ag_response_and_hold_active = 0; 1245 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1246 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1247 log_info("Held Call accepted and active"); 1248 break; 1249 1250 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1251 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1252 if (!hfp_ag_response_and_hold_active) break; 1253 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1254 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1255 hfp_ag_response_and_hold_active = 0; 1256 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1257 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1258 // from terminate by ag 1259 hfp_ag_set_call_indicator(); 1260 hfp_ag_trigger_terminate_call(); 1261 break; 1262 1263 case HFP_AG_TERMINATE_CALL_BY_HF: 1264 switch (hfp_gsm_call_status()){ 1265 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1266 switch (hfp_gsm_callsetup_status()){ 1267 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1268 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1269 hfp_ag_set_callsetup_indicator(); 1270 hfp_ag_transfer_callsetup_state(); 1271 hfp_ag_trigger_reject_call(); 1272 log_info("HF Rejected Incoming call, AG terminate call"); 1273 break; 1274 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1275 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1276 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1277 hfp_ag_set_callsetup_indicator(); 1278 hfp_ag_transfer_callsetup_state(); 1279 log_info("AG terminate outgoing call process"); 1280 break; 1281 default: 1282 break; 1283 } 1284 break; 1285 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1286 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1287 hfp_ag_set_callsetup_indicator(); 1288 hfp_ag_set_call_indicator(); 1289 hfp_ag_trigger_terminate_call(); 1290 log_info("AG terminate call"); 1291 break; 1292 default: 1293 break; 1294 } 1295 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1296 break; 1297 1298 case HFP_AG_TERMINATE_CALL_BY_AG: 1299 switch (hfp_gsm_call_status()){ 1300 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1301 switch (hfp_gsm_callsetup_status()){ 1302 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1303 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1304 hfp_ag_set_callsetup_indicator(); 1305 hfp_ag_trigger_reject_call(); 1306 log_info("AG Rejected Incoming call, AG terminate call"); 1307 break; 1308 default: 1309 break; 1310 } 1311 break; 1312 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1313 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1314 hfp_ag_set_callsetup_indicator(); 1315 hfp_ag_set_call_indicator(); 1316 hfp_ag_trigger_terminate_call(); 1317 log_info("AG terminate call"); 1318 break; 1319 default: 1320 break; 1321 } 1322 break; 1323 case HFP_AG_CALL_DROPPED: 1324 switch (hfp_gsm_call_status()){ 1325 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1326 switch (hfp_gsm_callsetup_status()){ 1327 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1328 hfp_ag_stop_ringing(); 1329 log_info("Incoming call interrupted"); 1330 break; 1331 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1332 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1333 log_info("Outgoing call interrupted\n"); 1334 log_info("AG notify call dropped\n"); 1335 break; 1336 default: 1337 break; 1338 } 1339 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1340 hfp_ag_set_callsetup_indicator(); 1341 hfp_ag_transfer_callsetup_state(); 1342 hfp_ag_trigger_terminate_call(); 1343 break; 1344 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1345 if (hfp_ag_response_and_hold_active) { 1346 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1347 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1348 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1349 } 1350 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1351 hfp_ag_set_callsetup_indicator(); 1352 hfp_ag_set_call_indicator(); 1353 hfp_ag_trigger_terminate_call(); 1354 log_info("AG notify call dropped"); 1355 break; 1356 default: 1357 break; 1358 } 1359 break; 1360 1361 case HFP_AG_OUTGOING_CALL_INITIATED: 1362 // directly reject call if number of free slots is exceeded 1363 if (!hfp_gsm_call_possible()){ 1364 hfp_connection->send_error = 1; 1365 hfp_ag_run_for_context(hfp_connection); 1366 break; 1367 } 1368 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1369 1370 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1371 1372 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1373 break; 1374 1375 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1376 // directly reject call if number of free slots is exceeded 1377 if (!hfp_gsm_call_possible()){ 1378 hfp_connection->send_error = 1; 1379 hfp_ag_run_for_context(hfp_connection); 1380 break; 1381 } 1382 1383 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1384 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1385 1386 log_info("Redial last number"); 1387 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1388 1389 if (strlen(last_dialed_number) > 0){ 1390 log_info("Last number exists: accept call"); 1391 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1392 } else { 1393 log_info("log_infoLast number missing: reject call"); 1394 hfp_ag_handle_reject_incoming_call(); 1395 } 1396 break; 1397 } 1398 case HFP_AG_OUTGOING_CALL_REJECTED: 1399 hfp_ag_handle_reject_incoming_call(); 1400 break; 1401 1402 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1403 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1404 if (!hfp_connection){ 1405 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1406 break; 1407 } 1408 1409 hfp_connection->ok_pending = 1; 1410 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1411 1412 // trigger callsetup to be 1413 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1414 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1415 1416 hfp_ag_set_callsetup_indicator(); 1417 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1418 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1419 1420 // put current call on hold if active 1421 if (put_call_on_hold){ 1422 log_info("AG putting current call on hold for new outgoing calllog_info"); 1423 hfp_ag_set_callheld_indicator(); 1424 indicator_index = get_ag_indicator_index_for_name("callheld"); 1425 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1426 } 1427 1428 // start audio if needed 1429 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1430 break; 1431 } 1432 case HFP_AG_OUTGOING_CALL_RINGING: 1433 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1434 if (!hfp_connection){ 1435 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1436 break; 1437 } 1438 1439 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1440 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1441 hfp_ag_set_callsetup_indicator(); 1442 hfp_ag_transfer_callsetup_state(); 1443 break; 1444 1445 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1446 // get outgoing call 1447 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1448 if (!hfp_connection){ 1449 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1450 } 1451 if (!hfp_connection){ 1452 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1453 break; 1454 } 1455 1456 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1457 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1458 hfp_connection->call_state = HFP_CALL_ACTIVE; 1459 hfp_ag_set_callsetup_indicator(); 1460 hfp_ag_set_call_indicator(); 1461 hfp_ag_transfer_call_state(); 1462 hfp_ag_transfer_callsetup_state(); 1463 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1464 hfp_ag_set_callheld_indicator(); 1465 hfp_ag_transfer_callheld_state(); 1466 } 1467 break; 1468 } 1469 1470 case HFP_AG_CALL_HOLD_USER_BUSY: 1471 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1472 hfp_ag_set_callsetup_indicator(); 1473 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1474 hfp_connection->call_state = HFP_CALL_ACTIVE; 1475 log_info("AG: Call Waiting, User Busy"); 1476 break; 1477 1478 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1479 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1480 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1481 1482 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1483 if (call_held || call_setup_in_progress){ 1484 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1485 0, NULL); 1486 1487 } 1488 1489 if (call_setup_in_progress){ 1490 log_info("AG: Call Dropped, Accept new call"); 1491 hfp_ag_set_callsetup_indicator(); 1492 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1493 } else { 1494 log_info("AG: Call Dropped, Resume held call"); 1495 } 1496 if (call_held){ 1497 hfp_ag_set_callheld_indicator(); 1498 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1499 } 1500 1501 hfp_connection->call_state = HFP_CALL_ACTIVE; 1502 break; 1503 } 1504 1505 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1506 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1507 // only update if callsetup changed 1508 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1509 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1510 NULL); 1511 1512 if (call_setup_in_progress){ 1513 log_info("AG: Call on Hold, Accept new call"); 1514 hfp_ag_set_callsetup_indicator(); 1515 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1516 } else { 1517 log_info("AG: Swap calls"); 1518 } 1519 1520 hfp_ag_set_callheld_indicator(); 1521 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1522 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1523 hfp_connection->call_state = HFP_CALL_ACTIVE; 1524 break; 1525 } 1526 1527 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1528 // Adds a held call to the conversation. 1529 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1530 log_info("AG: Join 3-way-call"); 1531 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1532 hfp_ag_set_callheld_indicator(); 1533 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1534 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1535 } 1536 hfp_connection->call_state = HFP_CALL_ACTIVE; 1537 break; 1538 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1539 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1540 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1541 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1542 hfp_ag_set_call_indicator(); 1543 hfp_ag_set_callheld_indicator(); 1544 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1545 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1546 hfp_connection->call_state = HFP_CALL_IDLE; 1547 break; 1548 1549 default: 1550 break; 1551 } 1552 1553 1554 } 1555 1556 1557 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1558 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1559 if (!active_call) return; 1560 1561 int idx = active_call->index; 1562 hfp_enhanced_call_dir_t dir = active_call->direction; 1563 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1564 hfp_enhanced_call_mode_t mode = active_call->mode; 1565 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1566 uint8_t type = active_call->clip_type; 1567 char * number = active_call->clip_number; 1568 1569 char buffer[100]; 1570 // TODO: check length of a buffer, to fit the MTU 1571 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1572 if (number){ 1573 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1574 } 1575 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1576 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, 1577 mode, mpty, type, number); 1578 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1579 } 1580 1581 1582 // sends pending command, returns if command was sent 1583 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1584 1585 if (hfp_connection->send_status_of_current_calls){ 1586 hfp_connection->ok_pending = 0; 1587 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1588 hfp_connection->next_call_index++; 1589 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1590 return 1; 1591 } else { 1592 // 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 1593 hfp_connection->next_call_index = 0; 1594 hfp_connection->ok_pending = 1; 1595 hfp_connection->send_status_of_current_calls = 0; 1596 } 1597 } 1598 1599 if (hfp_connection->ag_notify_incoming_call_waiting){ 1600 hfp_connection->ag_notify_incoming_call_waiting = 0; 1601 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1602 return 1; 1603 } 1604 1605 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1606 hfp_connection->ok_pending = 0; 1607 hfp_connection->send_error = 0; 1608 hfp_connection->command = HFP_CMD_NONE; 1609 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1610 return 1; 1611 } 1612 1613 if (hfp_connection->send_error){ 1614 hfp_connection->send_error = 0; 1615 hfp_connection->command = HFP_CMD_NONE; 1616 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1617 return 1; 1618 } 1619 1620 // note: before update AG indicators and ok_pending 1621 if (hfp_connection->send_response_and_hold_status){ 1622 int status = hfp_connection->send_response_and_hold_status - 1; 1623 hfp_connection->send_response_and_hold_status = 0; 1624 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1625 return 1; 1626 } 1627 1628 if (hfp_connection->ok_pending){ 1629 hfp_connection->ok_pending = 0; 1630 hfp_connection->command = HFP_CMD_NONE; 1631 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1632 return 1; 1633 } 1634 1635 // update AG indicators 1636 if (hfp_connection->ag_indicators_status_update_bitmap){ 1637 int i; 1638 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1639 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1640 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1641 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1642 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1643 break; 1644 } 1645 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1646 return 1; 1647 } 1648 } 1649 } 1650 1651 if (hfp_connection->ag_ring){ 1652 hfp_connection->ag_ring = 0; 1653 hfp_connection->command = HFP_CMD_NONE; 1654 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1655 return 1; 1656 } 1657 1658 if (hfp_connection->ag_send_clip){ 1659 hfp_connection->ag_send_clip = 0; 1660 hfp_connection->command = HFP_CMD_NONE; 1661 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1662 return 1; 1663 } 1664 1665 if (hfp_connection->send_phone_number_for_voice_tag){ 1666 hfp_connection->send_phone_number_for_voice_tag = 0; 1667 hfp_connection->command = HFP_CMD_NONE; 1668 hfp_connection->ok_pending = 1; 1669 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1670 return 1; 1671 } 1672 1673 if (hfp_connection->send_subscriber_number){ 1674 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1675 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1676 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1677 } else { 1678 hfp_connection->send_subscriber_number = 0; 1679 hfp_connection->next_subscriber_number_to_send = 0; 1680 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1681 } 1682 hfp_connection->command = HFP_CMD_NONE; 1683 return 1; 1684 } 1685 1686 if (hfp_connection->send_microphone_gain){ 1687 hfp_connection->send_microphone_gain = 0; 1688 hfp_connection->command = HFP_CMD_NONE; 1689 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1690 return 1; 1691 } 1692 1693 if (hfp_connection->send_speaker_gain){ 1694 hfp_connection->send_speaker_gain = 0; 1695 hfp_connection->command = HFP_CMD_NONE; 1696 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1697 return 1; 1698 } 1699 1700 if (hfp_connection->send_ag_status_indicators){ 1701 hfp_connection->send_ag_status_indicators = 0; 1702 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1703 return 1; 1704 } 1705 1706 return 0; 1707 } 1708 1709 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1710 1711 btstack_assert(hfp_connection != NULL); 1712 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1713 1714 // during SDP query, RFCOMM CID is not set 1715 if (hfp_connection->rfcomm_cid == 0) return; 1716 1717 // assert command could be sent 1718 if (hci_can_send_command_packet_now() == 0) return; 1719 1720 #ifdef ENABLE_CC256X_ASSISTED_HFP 1721 // WBS Disassociate 1722 if (hfp_connection->cc256x_send_wbs_disassociate){ 1723 hfp_connection->cc256x_send_wbs_disassociate = false; 1724 hci_send_cmd(&hci_ti_wbs_disassociate); 1725 return; 1726 } 1727 // Write Codec Config 1728 if (hfp_connection->cc256x_send_write_codec_config){ 1729 hfp_connection->cc256x_send_write_codec_config = false; 1730 hfp_cc256x_write_codec_config(hfp_connection); 1731 return; 1732 } 1733 // WBS Associate 1734 if (hfp_connection->cc256x_send_wbs_associate){ 1735 hfp_connection->cc256x_send_wbs_associate = false; 1736 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 1737 return; 1738 } 1739 #endif 1740 1741 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1742 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1743 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1744 return; 1745 } 1746 1747 int cmd_sent = hfp_ag_send_commands(hfp_connection); 1748 1749 // trigger codec exchange if requested by app 1750 if (hfp_connection->trigger_codec_exchange){ 1751 log_info("trigger codec, command %u, codec state %u", hfp_connection->command, hfp_connection->codecs_state); 1752 } 1753 1754 if (hfp_connection->trigger_codec_exchange && (hfp_connection->command == HFP_CMD_NONE)){ 1755 switch (hfp_connection->codecs_state){ 1756 case HFP_CODECS_IDLE: 1757 case HFP_CODECS_RECEIVED_LIST: 1758 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1759 case HFP_CODECS_ERROR: 1760 hfp_connection->trigger_codec_exchange = 0; 1761 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1762 break; 1763 default: 1764 break; 1765 } 1766 } 1767 1768 if (!cmd_sent){ 1769 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1770 } 1771 1772 if (!cmd_sent){ 1773 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1774 } 1775 1776 if (!cmd_sent){ 1777 cmd_sent = call_setup_state_machine(hfp_connection); 1778 } 1779 1780 if (!cmd_sent){ 1781 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1782 } 1783 1784 if ((hfp_connection->command == HFP_CMD_NONE) && !cmd_sent){ 1785 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1786 switch(hfp_connection->state){ 1787 case HFP_W2_DISCONNECT_RFCOMM: 1788 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1789 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1790 break; 1791 default: 1792 break; 1793 } 1794 } 1795 1796 if (cmd_sent){ 1797 hfp_connection->command = HFP_CMD_NONE; 1798 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1799 } 1800 } 1801 1802 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1803 int i; 1804 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1805 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1806 if (indicator->uuid == number){ 1807 return indicator; 1808 } 1809 } 1810 return NULL; 1811 } 1812 1813 static int hfp_parser_is_end_of_line(uint8_t byte){ 1814 return (byte == '\n') || (byte == '\r'); 1815 } 1816 1817 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1818 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1819 1820 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1821 if (size < 1) return; 1822 1823 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1824 if (!hfp_connection) return; 1825 1826 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 1827 1828 // process messages byte-wise 1829 int pos; 1830 for (pos = 0; pos < size ; pos++){ 1831 hfp_parse(hfp_connection, packet[pos], 0); 1832 1833 // parse until end of line 1834 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1835 1836 hfp_generic_status_indicator_t * indicator; 1837 switch(hfp_connection->command){ 1838 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1839 if (hfp_ag_response_and_hold_active){ 1840 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1841 } 1842 hfp_connection->ok_pending = 1; 1843 break; 1844 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1845 switch(hfp_connection->ag_response_and_hold_action){ 1846 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1847 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1848 break; 1849 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1850 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1851 break; 1852 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1853 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1854 break; 1855 default: 1856 break; 1857 } 1858 hfp_connection->ok_pending = 1; 1859 break; 1860 case HFP_CMD_HF_INDICATOR_STATUS: 1861 hfp_connection->command = HFP_CMD_NONE; 1862 // find indicator by assigned number 1863 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1864 if (!indicator){ 1865 hfp_connection->send_error = 1; 1866 break; 1867 } 1868 switch (indicator->uuid){ 1869 case 1: // enhanced security 1870 if (hfp_connection->parser_indicator_value > 1) { 1871 hfp_connection->send_error = 1; 1872 return; 1873 } 1874 log_info("HF Indicator 'enhanced security' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1875 break; 1876 case 2: // battery level 1877 if (hfp_connection->parser_indicator_value > 100){ 1878 hfp_connection->send_error = 1; 1879 return; 1880 } 1881 log_info("HF Indicator 'battery' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1882 break; 1883 default: 1884 log_info("HF Indicator unknown set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1885 break; 1886 } 1887 hfp_connection->ok_pending = 1; 1888 break; 1889 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1890 // expected by SLC state machine 1891 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1892 hfp_connection->send_ag_indicators_segment = 0; 1893 hfp_connection->send_ag_status_indicators = 1; 1894 break; 1895 case HFP_CMD_LIST_CURRENT_CALLS: 1896 hfp_connection->command = HFP_CMD_NONE; 1897 hfp_connection->next_call_index = 0; 1898 hfp_connection->send_status_of_current_calls = 1; 1899 break; 1900 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1901 if (subscriber_numbers_count == 0){ 1902 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1903 break; 1904 } 1905 hfp_connection->next_subscriber_number_to_send = 0; 1906 hfp_connection->send_subscriber_number = 1; 1907 break; 1908 case HFP_CMD_TRANSMIT_DTMF_CODES: 1909 { 1910 hfp_connection->command = HFP_CMD_NONE; 1911 char buffer[2]; 1912 buffer[0] = (char) hfp_connection->ag_dtmf_code; 1913 buffer[1] = 0; 1914 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 1915 break; 1916 } 1917 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1918 hfp_connection->command = HFP_CMD_NONE; 1919 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1920 break; 1921 case HFP_CMD_TURN_OFF_EC_AND_NR: 1922 hfp_connection->command = HFP_CMD_NONE; 1923 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1924 hfp_connection->ok_pending = 1; 1925 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1926 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1927 } else { 1928 hfp_connection->send_error = 1; 1929 } 1930 break; 1931 case HFP_CMD_CALL_ANSWERED: 1932 hfp_connection->command = HFP_CMD_NONE; 1933 log_info("HFP: ATA"); 1934 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1935 break; 1936 case HFP_CMD_HANG_UP_CALL: 1937 hfp_connection->command = HFP_CMD_NONE; 1938 hfp_connection->ok_pending = 1; 1939 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1940 break; 1941 case HFP_CMD_CALL_HOLD: { 1942 hfp_connection->command = HFP_CMD_NONE; 1943 hfp_connection->ok_pending = 1; 1944 1945 switch (hfp_connection->ag_call_hold_action){ 1946 case 0: 1947 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1948 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1949 break; 1950 case 1: 1951 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1952 // Where both a held and a waiting call exist, the above procedures shall apply to the 1953 // waiting call (i.e., not to the held call) in conflicting situation. 1954 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1955 break; 1956 case 2: 1957 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1958 // Where both a held and a waiting call exist, the above procedures shall apply to the 1959 // waiting call (i.e., not to the held call) in conflicting situation. 1960 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1961 break; 1962 case 3: 1963 // Adds a held call to the conversation. 1964 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1965 break; 1966 case 4: 1967 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1968 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1969 break; 1970 default: 1971 break; 1972 } 1973 hfp_connection->call_index = 0; 1974 break; 1975 } 1976 case HFP_CMD_CALL_PHONE_NUMBER: 1977 hfp_connection->command = HFP_CMD_NONE; 1978 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1979 break; 1980 case HFP_CMD_REDIAL_LAST_NUMBER: 1981 hfp_connection->command = HFP_CMD_NONE; 1982 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1983 break; 1984 case HFP_CMD_ENABLE_CLIP: 1985 hfp_connection->command = HFP_CMD_NONE; 1986 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1987 hfp_connection->ok_pending = 1; 1988 break; 1989 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1990 hfp_connection->command = HFP_CMD_NONE; 1991 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1992 hfp_connection->ok_pending = 1; 1993 break; 1994 case HFP_CMD_SET_SPEAKER_GAIN: 1995 hfp_connection->command = HFP_CMD_NONE; 1996 hfp_connection->ok_pending = 1; 1997 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 1998 break; 1999 case HFP_CMD_SET_MICROPHONE_GAIN: 2000 hfp_connection->command = HFP_CMD_NONE; 2001 hfp_connection->ok_pending = 1; 2002 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2003 break; 2004 default: 2005 break; 2006 } 2007 } 2008 } 2009 2010 static void hfp_ag_run(void){ 2011 btstack_linked_list_iterator_t it; 2012 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2013 while (btstack_linked_list_iterator_has_next(&it)){ 2014 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2015 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2016 hfp_ag_run_for_context(hfp_connection); 2017 } 2018 } 2019 2020 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2021 switch (packet_type){ 2022 case RFCOMM_DATA_PACKET: 2023 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 2024 break; 2025 case HCI_EVENT_PACKET: 2026 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2027 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2028 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2029 return; 2030 } 2031 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2032 break; 2033 default: 2034 break; 2035 } 2036 2037 hfp_ag_run(); 2038 } 2039 2040 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2041 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2042 hfp_ag_run(); 2043 } 2044 2045 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2046 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2047 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2048 return; 2049 } 2050 int i; 2051 hfp_codecs_nr = codecs_nr; 2052 for (i=0; i < codecs_nr; i++){ 2053 hfp_codecs[i] = codecs[i]; 2054 } 2055 } 2056 2057 void hfp_ag_init_supported_features(uint32_t supported_features){ 2058 hfp_supported_features = supported_features; 2059 } 2060 2061 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2062 hfp_ag_indicators_nr = ag_indicators_nr; 2063 (void)memcpy(hfp_ag_indicators, ag_indicators, 2064 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2065 } 2066 2067 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2068 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2069 hfp_generic_status_indicators_nr = hf_indicators_nr; 2070 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2071 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2072 } 2073 2074 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2075 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2076 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2077 call_hold_services_nr * sizeof(char *)); 2078 } 2079 2080 2081 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2082 2083 hfp_init(); 2084 2085 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2086 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2087 2088 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2089 2090 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2091 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2092 2093 hfp_ag_response_and_hold_active = 0; 2094 subscriber_numbers = NULL; 2095 subscriber_numbers_count = 0; 2096 2097 hfp_gsm_init(); 2098 } 2099 2100 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2101 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2102 } 2103 2104 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2105 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2106 if (!hfp_connection){ 2107 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2108 return; 2109 } 2110 hfp_release_service_level_connection(hfp_connection); 2111 hfp_ag_run_for_context(hfp_connection); 2112 } 2113 2114 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2115 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2116 if (!hfp_connection){ 2117 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2118 return; 2119 } 2120 hfp_connection->extended_audio_gateway_error = 0; 2121 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2122 return; 2123 } 2124 hfp_connection->extended_audio_gateway_error = error; 2125 hfp_ag_run_for_context(hfp_connection); 2126 } 2127 2128 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2129 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2130 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2131 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2132 2133 hfp_connection->establish_audio_connection = 1; 2134 if (!has_codec_negotiation_feature(hfp_connection)){ 2135 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2136 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2137 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2138 // now, pick link settings 2139 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2140 #ifdef ENABLE_CC256X_ASSISTED_HFP 2141 hfp_cc256x_prepare_for_sco(hfp_connection); 2142 #endif 2143 return; 2144 } 2145 2146 hfp_connection->trigger_codec_exchange = 1; 2147 } 2148 2149 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2150 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2151 if (!hfp_connection){ 2152 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2153 return; 2154 } 2155 hfp_connection->trigger_codec_exchange = 0; 2156 hfp_connection->establish_audio_connection = 0; 2157 hfp_ag_setup_audio_connection(hfp_connection); 2158 hfp_ag_run_for_context(hfp_connection); 2159 } 2160 2161 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2162 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2163 if (!hfp_connection){ 2164 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2165 return; 2166 } 2167 hfp_release_audio_connection(hfp_connection); 2168 hfp_ag_run_for_context(hfp_connection); 2169 } 2170 2171 /** 2172 * @brief Enable in-band ring tone 2173 */ 2174 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2175 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2176 return; 2177 } 2178 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2179 2180 btstack_linked_list_iterator_t it; 2181 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2182 while (btstack_linked_list_iterator_has_next(&it)){ 2183 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2184 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2185 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2186 hfp_ag_run_for_context(hfp_connection); 2187 } 2188 } 2189 2190 /** 2191 * @brief Called from GSM 2192 */ 2193 void hfp_ag_incoming_call(void){ 2194 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2195 } 2196 2197 /** 2198 * @brief number is stored. 2199 */ 2200 void hfp_ag_set_clip(uint8_t type, const char * number){ 2201 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2202 } 2203 2204 void hfp_ag_call_dropped(void){ 2205 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2206 } 2207 2208 // call from AG UI 2209 void hfp_ag_answer_incoming_call(void){ 2210 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2211 } 2212 2213 void hfp_ag_join_held_call(void){ 2214 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2215 } 2216 2217 void hfp_ag_terminate_call(void){ 2218 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2219 } 2220 2221 void hfp_ag_outgoing_call_ringing(void){ 2222 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2223 } 2224 2225 void hfp_ag_outgoing_call_established(void){ 2226 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2227 } 2228 2229 void hfp_ag_outgoing_call_rejected(void){ 2230 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2231 } 2232 2233 void hfp_ag_outgoing_call_accepted(void){ 2234 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2235 } 2236 2237 void hfp_ag_hold_incoming_call(void){ 2238 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2239 } 2240 2241 void hfp_ag_accept_held_incoming_call(void) { 2242 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2243 } 2244 2245 void hfp_ag_reject_held_incoming_call(void){ 2246 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2247 } 2248 2249 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2250 int indicator_index = get_ag_indicator_index_for_name(name); 2251 if (indicator_index < 0) return; 2252 hfp_ag_indicators[indicator_index].status = value; 2253 2254 2255 btstack_linked_list_iterator_t it; 2256 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2257 while (btstack_linked_list_iterator_has_next(&it)){ 2258 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2259 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2260 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2261 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2262 continue; 2263 } 2264 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2265 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2266 hfp_ag_run_for_context(hfp_connection); 2267 } 2268 } 2269 2270 void hfp_ag_set_registration_status(int status){ 2271 hfp_ag_set_ag_indicator("service", status); 2272 } 2273 2274 void hfp_ag_set_signal_strength(int strength){ 2275 hfp_ag_set_ag_indicator("signal", strength); 2276 } 2277 2278 void hfp_ag_set_roaming_status(int status){ 2279 hfp_ag_set_ag_indicator("roam", status); 2280 } 2281 2282 void hfp_ag_set_battery_level(int level){ 2283 hfp_ag_set_ag_indicator("battchg", level); 2284 } 2285 2286 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2287 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2288 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2289 if (!hfp_connection){ 2290 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2291 return; 2292 } 2293 2294 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2295 log_info("AG cannot acivate voice recognition - not supported by HF"); 2296 return; 2297 } 2298 2299 if (activate){ 2300 hfp_ag_establish_audio_connection(acl_handle); 2301 } 2302 2303 hfp_connection->ag_activate_voice_recognition = activate; 2304 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2305 hfp_ag_run_for_context(hfp_connection); 2306 } 2307 2308 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2309 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2310 if (!hfp_connection){ 2311 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2312 return; 2313 } 2314 if (hfp_connection->microphone_gain != gain){ 2315 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2316 hfp_connection->microphone_gain = gain; 2317 hfp_connection->send_microphone_gain = 1; 2318 } 2319 hfp_ag_run_for_context(hfp_connection); 2320 } 2321 2322 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2323 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2324 if (!hfp_connection){ 2325 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2326 return; 2327 } 2328 if (hfp_connection->speaker_gain != gain){ 2329 hfp_connection->speaker_gain = gain; 2330 hfp_connection->send_speaker_gain = 1; 2331 } 2332 hfp_ag_run_for_context(hfp_connection); 2333 } 2334 2335 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2336 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2337 if (!hfp_connection){ 2338 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2339 return; 2340 } 2341 hfp_ag_set_clip(0, number); 2342 hfp_connection->send_phone_number_for_voice_tag = 1; 2343 } 2344 2345 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2346 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2347 if (!hfp_connection){ 2348 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2349 return; 2350 } 2351 hfp_connection->send_error = 1; 2352 } 2353 2354 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2355 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2356 if (!hfp_connection){ 2357 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2358 return; 2359 } 2360 hfp_connection->ok_pending = 1; 2361 } 2362 2363 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2364 subscriber_numbers = numbers; 2365 subscriber_numbers_count = numbers_count; 2366 } 2367 2368 void hfp_ag_clear_last_dialed_number(void){ 2369 hfp_gsm_clear_last_dialed_number(); 2370 } 2371 2372 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2373 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2374 if (!hfp_connection){ 2375 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2376 return; 2377 } 2378 if (!hfp_connection->call_waiting_notification_enabled) return; 2379 2380 hfp_connection->ag_notify_incoming_call_waiting = 1; 2381 hfp_ag_run_for_context(hfp_connection); 2382 } 2383 2384 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){ 2385 if (!name){ 2386 name = default_hfp_ag_service_name; 2387 } 2388 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2389 2390 /* 2391 * 0x01 – Ability to reject a call 2392 * 0x00 – No ability to reject a call 2393 */ 2394 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2395 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2396 2397 // Construct SupportedFeatures for SDP bitmap: 2398 // 2399 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2400 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2401 // 2402 // Wide band speech (bit 5) requires Codec negotiation 2403 // 2404 uint16_t sdp_features = supported_features & 0x1f; 2405 if (wide_band_speech && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2406 sdp_features |= 1 << 5; 2407 } 2408 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2409 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2410 } 2411 2412 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2413 if (callback == NULL){ 2414 log_error("hfp_ag_register_packet_handler called with NULL callback"); 2415 return; 2416 } 2417 hfp_ag_callback = callback; 2418 hfp_set_ag_callback(callback); 2419 } 2420