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 <stdio.h> 50 #include <string.h> 51 52 #include "hci_cmd.h" 53 #include "btstack_run_loop.h" 54 55 #include "bluetooth_sdp.h" 56 #include "hci.h" 57 #include "btstack_memory.h" 58 #include "hci_dump.h" 59 #include "l2cap.h" 60 #include "btstack_debug.h" 61 #include "btstack_event.h" 62 #include "classic/core.h" 63 #include "classic/hfp.h" 64 #include "classic/hfp_ag.h" 65 #include "classic/hfp_gsm_model.h" 66 #include "classic/sdp_client_rfcomm.h" 67 #include "classic/sdp_server.h" 68 #include "classic/sdp_util.h" 69 70 // private prototypes 71 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection); 72 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection); 73 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 74 75 // public prototypes 76 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 77 int get_hfp_generic_status_indicators_nr(void); 78 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 79 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 80 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 81 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 82 83 84 // const 85 static const char default_hfp_ag_service_name[] = "Voice gateway"; 86 87 // globals 88 static btstack_packet_callback_registration_t hfp_ag_hci_event_callback_registration; 89 90 static uint16_t hfp_supported_features; 91 92 static uint8_t hfp_codecs_nr; 93 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 94 95 static int hfp_ag_indicators_nr; 96 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_INDICATORS]; 97 98 static int hfp_generic_status_indicators_nr; 99 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_INDICATORS]; 100 101 static int hfp_ag_call_hold_services_nr; 102 static char *hfp_ag_call_hold_services[6]; 103 static btstack_packet_handler_t hfp_ag_callback; 104 105 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 106 static int hfp_ag_response_and_hold_active; 107 108 // Subscriber information entries 109 static hfp_phone_number_t * subscriber_numbers; 110 static int subscriber_numbers_count; 111 112 // code 113 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 114 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 115 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 116 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 117 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 118 } 119 return hfp_connection->ag_indicators_nr; 120 } 121 122 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 123 // TODO: save only value, and value changed in the hfp_connection? 124 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 125 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 126 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 127 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 128 } 129 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 130 } 131 132 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 133 int i; 134 for (i = 0; i < hfp_ag_indicators_nr; i++){ 135 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 136 return &hfp_ag_indicators[i]; 137 } 138 } 139 return NULL; 140 } 141 142 static int get_ag_indicator_index_for_name(const char * name){ 143 int i; 144 for (i = 0; i < hfp_ag_indicators_nr; i++){ 145 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 146 return i; 147 } 148 } 149 return -1; 150 } 151 152 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 153 btstack_linked_list_iterator_t it; 154 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 155 while (btstack_linked_list_iterator_has_next(&it)){ 156 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 157 if (hfp_connection->acl_handle != handle) continue; 158 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 159 return hfp_connection; 160 } 161 return NULL; 162 } 163 164 static int use_in_band_tone(void){ 165 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 166 } 167 168 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 169 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 170 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 171 return hf && ag; 172 } 173 174 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 175 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 176 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 177 return hf && ag; 178 } 179 180 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 181 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 182 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 183 return hf && ag; 184 } 185 186 /* unsolicited responses */ 187 188 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 189 char buffer[20]; 190 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", 191 HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 192 buffer[sizeof(buffer) - 1] = 0; 193 return send_str_over_rfcomm(cid, buffer); 194 } 195 196 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 197 char buffer[40]; 198 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n\r\nOK\r\n", 199 HFP_SUPPORTED_FEATURES, hfp_supported_features); 200 buffer[sizeof(buffer) - 1] = 0; 201 return send_str_over_rfcomm(cid, buffer); 202 } 203 204 static int hfp_ag_send_ok(uint16_t cid){ 205 char buffer[10]; 206 snprintf(buffer, sizeof(buffer), "\r\nOK\r\n"); 207 buffer[sizeof(buffer) - 1] = 0; 208 return send_str_over_rfcomm(cid, buffer); 209 } 210 211 static int hfp_ag_send_ring(uint16_t cid){ 212 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 213 } 214 215 static int hfp_ag_send_no_carrier(uint16_t cid){ 216 char buffer[15]; 217 snprintf(buffer, sizeof(buffer), "\r\nNO CARRIER\r\n"); 218 buffer[sizeof(buffer) - 1] = 0; 219 return send_str_over_rfcomm(cid, buffer); 220 } 221 222 static int hfp_ag_send_clip(uint16_t cid){ 223 char buffer[50]; 224 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, 225 hfp_gsm_clip_number(), hfp_gsm_clip_type()); 226 buffer[sizeof(buffer) - 1] = 0; 227 return send_str_over_rfcomm(cid, buffer); 228 } 229 230 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 231 char buffer[50]; 232 snprintf(buffer, sizeof(buffer), "\r\n%s: ,\"%s\",%u, , \r\n", 233 HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 234 buffer[sizeof(buffer) - 1] = 0; 235 return send_str_over_rfcomm(cid, buffer); 236 } 237 238 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 239 char buffer[50]; 240 snprintf(buffer, sizeof(buffer), "\r\n%s: %s\r\n", 241 HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 242 buffer[sizeof(buffer) - 1] = 0; 243 return send_str_over_rfcomm(cid, buffer); 244 } 245 246 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 247 char buffer[50]; 248 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", 249 HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), 250 hfp_gsm_clip_type()); 251 buffer[sizeof(buffer) - 1] = 0; 252 return send_str_over_rfcomm(cid, buffer); 253 } 254 255 static int hfp_ag_send_error(uint16_t cid){ 256 char buffer[10]; 257 snprintf(buffer, sizeof(buffer), "\r\nERROR\r\n"); 258 buffer[sizeof(buffer) - 1] = 0; 259 return send_str_over_rfcomm(cid, buffer); 260 } 261 262 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 263 char buffer[20]; 264 snprintf(buffer, sizeof(buffer), "\r\n%s=%d\r\n", 265 HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 266 buffer[sizeof(buffer) - 1] = 0; 267 return send_str_over_rfcomm(cid, buffer); 268 } 269 270 // get size for indicator string 271 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 272 // template: ("$NAME",($MIN,$MAX)) 273 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 274 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 275 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 276 } 277 278 // store indicator 279 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer, uint16_t buffer_size){ 280 snprintf((char *)buffer, buffer_size, "(\"%s\",(%d,%d)),", 281 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 282 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 283 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 284 ((char *)buffer)[buffer_size - 1] = 0; 285 } 286 287 // structure: header [indicator [comma indicator]] footer 288 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 289 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 290 if (!num_indicators) return 2; 291 return 3 + ((num_indicators-1) * 2); 292 } 293 294 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 295 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 296 if (index == 0) { 297 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 298 } 299 index--; 300 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 301 int indicator_index = index >> 1; 302 if ((index & 1) == 0){ 303 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 304 } 305 if (indicator_index == (num_indicators - 1)){ 306 return 8; // "\r\n\r\nOK\r\n" 307 } 308 return 1; // comma 309 } 310 311 static void hfp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer, uint16_t buffer_size){ 312 if (index == 0){ 313 *buffer++ = '\r'; 314 *buffer++ = '\n'; 315 int len = strlen(HFP_INDICATOR); 316 (void)memcpy(buffer, HFP_INDICATOR, len); 317 buffer += len; 318 *buffer++ = ':'; 319 return; 320 } 321 index--; 322 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 323 int indicator_index = index >> 1; 324 if ((index & 1) == 0){ 325 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer, buffer_size); 326 return; 327 } 328 if (indicator_index == (num_indicators-1)){ 329 (void)memcpy(buffer, "\r\n\r\nOK\r\n", 8); 330 return; 331 } 332 *buffer = ','; 333 } 334 335 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 336 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 337 int i; 338 int offset = 0; 339 for (i = 0; i < (hfp_generic_status_indicators_nr-1); i++) { 340 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 341 } 342 if (i < hfp_generic_status_indicators_nr){ 343 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_generic_status_indicators[i].uuid); 344 } 345 return offset; 346 } 347 348 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 349 if (buffer_size < (hfp_generic_status_indicators_nr * 3)) return 0; 350 int i; 351 int offset = 0; 352 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 353 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); 354 } 355 return offset; 356 } 357 358 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 359 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 360 int i; 361 int offset = 0; 362 for (i = 0; i < (hfp_ag_indicators_nr-1); i++) { 363 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 364 } 365 if (i<hfp_ag_indicators_nr){ 366 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 367 } 368 return offset; 369 } 370 371 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 372 if (buffer_size < (hfp_ag_call_hold_services_nr * 3)) return 0; 373 int i; 374 int offset = snprintf(buffer, buffer_size, "("); 375 for (i = 0; i < (hfp_ag_call_hold_services_nr-1); i++) { 376 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 377 } 378 if (i<hfp_ag_call_hold_services_nr){ 379 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 380 } 381 return offset; 382 } 383 384 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 385 int start_segment, int num_segments, 386 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 387 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer, uint16_t buffer_size)){ 388 389 // assumes: can send now == true 390 // assumes: num segments > 0 391 // assumes: individual segments are smaller than MTU 392 rfcomm_reserve_packet_buffer(); 393 int mtu = rfcomm_get_max_frame_size(cid); 394 uint8_t * data = rfcomm_get_outgoing_buffer(); 395 int offset = 0; 396 int segment = start_segment; 397 while (segment < num_segments){ 398 int segment_len = get_segment_len(hfp_connection, segment); 399 if ((offset + segment_len + 1) > mtu) break; 400 // append segment. As it appends a '\0', we provide a buffer one byte larger 401 store_segment(hfp_connection, segment, data+offset, segment_len + 1); 402 offset += segment_len; 403 segment++; 404 } 405 rfcomm_send_prepared(cid, offset); 406 #ifdef ENABLE_HFP_AT_MESSAGES 407 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_SENT, (char *) data); 408 #endif 409 return segment; 410 } 411 412 // returns next segment to store 413 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 414 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 415 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 416 hfp_ag_indicators_cmd_generator_get_segment_len, 417 hfp_ag_indicators_cmd_generator_store_segment); 418 } 419 420 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 421 char buffer[40]; 422 const int size = sizeof(buffer); 423 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 424 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 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_can_hold_call_cmd(uint16_t cid){ 430 char buffer[40]; 431 const int size = sizeof(buffer); 432 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 433 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 434 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 435 return send_str_over_rfcomm(cid, buffer); 436 } 437 438 439 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 440 return hfp_ag_send_ok(cid); 441 } 442 443 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 444 char buffer[40]; 445 const int size = sizeof(buffer); 446 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 447 offset += hfp_hf_indicators_join(buffer+offset, size-offset-10); 448 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 449 return send_str_over_rfcomm(cid, buffer); 450 } 451 452 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 453 char buffer[40]; 454 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 455 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 456 return send_str_over_rfcomm(cid, buffer); 457 } 458 459 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 460 char buffer[20]; 461 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d\r\n", 462 HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, 463 indicator->status); 464 buffer[sizeof(buffer) - 1] = 0; 465 return send_str_over_rfcomm(cid, buffer); 466 } 467 468 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 469 char buffer[41]; 470 if (strlen(op.name) == 0){ 471 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 472 } else { 473 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 474 offset += snprintf(buffer+offset, 16, "%s", op.name); 475 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 476 } 477 return send_str_over_rfcomm(cid, buffer); 478 } 479 480 static inline int hfp_ag_send_cmd_with_space_and_int(uint16_t cid, const char * cmd, uint8_t value){ 481 char buffer[30]; 482 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", cmd, value); 483 return send_str_over_rfcomm(cid, buffer); 484 } 485 486 487 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 488 char buffer[30]; 489 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 490 return send_str_over_rfcomm(cid, buffer); 491 } 492 493 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 494 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 495 } 496 497 static int hfp_ag_send_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 498 return hfp_ag_send_cmd_with_space_and_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 499 } 500 501 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 502 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 503 } 504 505 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 506 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 507 } 508 509 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 510 return hfp_ag_send_cmd_with_space_and_int(cid, HFP_RESPONSE_AND_HOLD, state); 511 } 512 513 static int hfp_ag_send_enhanced_voice_recognition_cmd(uint16_t cid, uint8_t status, uint8_t state){ 514 char buffer[30]; 515 snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, status, state); 516 return send_str_over_rfcomm(cid, buffer); 517 } 518 519 static int hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection_t *hfp_connection){ 520 char buffer[100]; 521 snprintf(buffer, sizeof(buffer), "\r\n%s: 1,%d,%X,%d,%d,\"%s\"\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, 522 hfp_connection->ag_vra_state, 523 hfp_connection->ag_msg.text_id, 524 hfp_connection->ag_msg.text_type, 525 hfp_connection->ag_msg.text_operation, 526 hfp_connection->ag_msg.text); 527 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 528 } 529 530 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 531 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 532 533 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 534 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 535 return HFP_CODEC_MSBC; 536 } 537 } 538 return HFP_CODEC_CVSD; 539 } 540 541 /* state machines */ 542 543 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 544 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4)); 545 } 546 547 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 548 /* events ( == commands): 549 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 550 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 551 hf_trigger_codec_connection_setup == received BCC 552 ag_trigger_codec_connection_setup == received from AG to send BCS 553 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 554 */ 555 switch (hfp_connection->codecs_state){ 556 case HFP_CODECS_EXCHANGED: 557 if (hfp_connection->command == HFP_CMD_AVAILABLE_CODECS){ 558 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 559 return 1; 560 } 561 break; 562 563 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 564 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 565 break; 566 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 567 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 568 break; 569 default: 570 break; 571 } 572 573 switch (hfp_connection->command){ 574 case HFP_CMD_AVAILABLE_CODECS: 575 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 576 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 577 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 578 return 1; 579 } 580 581 switch (hfp_connection->codecs_state){ 582 case HFP_CODECS_AG_SENT_COMMON_CODEC: 583 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 584 break; 585 default: 586 break; 587 } 588 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 589 return 1; 590 591 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 592 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 593 hfp_connection->establish_audio_connection = 1; 594 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 595 return 1; 596 597 case HFP_CMD_AG_SEND_COMMON_CODEC: 598 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 599 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 600 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 601 return 1; 602 603 case HFP_CMD_HF_CONFIRMED_CODEC: 604 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 605 hfp_connection->codecs_state = HFP_CODECS_ERROR; 606 hfp_ag_send_error(hfp_connection->rfcomm_cid); 607 return 1; 608 } 609 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 610 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 611 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 612 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 613 // now, pick link settings 614 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 615 #ifdef ENABLE_CC256X_ASSISTED_HFP 616 hfp_cc256x_prepare_for_sco(hfp_connection); 617 #endif 618 return 1; 619 default: 620 break; 621 } 622 return 0; 623 } 624 625 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 626 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 627 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 628 629 // if active call exist, set per-hfp_connection state active, too (when audio is on) 630 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 631 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 632 } 633 // if AG is ringing, also start ringing on the HF 634 if ((hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS) && 635 (hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS)){ 636 hfp_ag_hf_start_ringing(hfp_connection); 637 } 638 } 639 640 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 641 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 642 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 643 int sent = 0; 644 switch(hfp_connection->command){ 645 case HFP_CMD_SUPPORTED_FEATURES: 646 switch(hfp_connection->state){ 647 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 648 case HFP_EXCHANGE_SUPPORTED_FEATURES: 649 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 650 if (has_codec_negotiation_feature(hfp_connection)){ 651 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 652 } else { 653 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 654 } 655 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 656 return 1; 657 default: 658 break; 659 } 660 break; 661 case HFP_CMD_AVAILABLE_CODECS: 662 sent = codecs_exchange_state_machine(hfp_connection); 663 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 664 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 665 } 666 return sent; 667 668 case HFP_CMD_RETRIEVE_AG_INDICATORS: 669 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 670 // HF requested AG Indicators and we did expect it 671 hfp_connection->send_ag_indicators_segment = 0; 672 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 673 // continue below in state switch 674 } 675 break; 676 677 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 678 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 679 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 680 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 681 return 1; 682 683 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 684 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 685 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 686 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 687 } else if (has_hf_indicators_feature(hfp_connection)){ 688 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 689 } else { 690 hfp_ag_slc_established(hfp_connection); 691 } 692 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 693 return 1; 694 695 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 696 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 697 if (has_hf_indicators_feature(hfp_connection)){ 698 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 699 } 700 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 701 if (!has_hf_indicators_feature(hfp_connection)){ 702 hfp_ag_slc_established(hfp_connection); 703 } 704 return 1; 705 706 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 707 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 708 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 709 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 710 return 1; 711 712 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 713 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 714 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 715 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 716 return 1; 717 718 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 719 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 720 hfp_ag_slc_established(hfp_connection); 721 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 722 return 1; 723 default: 724 break; 725 } 726 727 switch (hfp_connection->state){ 728 case HFP_RETRIEVE_INDICATORS: { 729 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 730 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 731 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 732 if (next_segment < num_segments){ 733 // prepare sending of next segment 734 hfp_connection->send_ag_indicators_segment = next_segment; 735 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 736 } else { 737 // done, go to next state 738 hfp_connection->send_ag_indicators_segment = 0; 739 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 740 } 741 return 1; 742 } 743 default: 744 break; 745 } 746 return 0; 747 } 748 749 static bool hfp_ag_voice_recognition_supported(hfp_connection_t * hfp_connection){ 750 int ag = get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION); 751 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION); 752 return hf && ag; 753 } 754 755 static uint8_t hfp_ag_activate_voice_recognition_for_connection(hfp_connection_t * hfp_connection){ 756 if (!hfp_ag_voice_recognition_supported(hfp_connection)){ 757 return ERROR_CODE_COMMAND_DISALLOWED; 758 } 759 if (hfp_connection->vra_status != HFP_VRA_VOICE_RECOGNITION_OFF){ 760 return ERROR_CODE_COMMAND_DISALLOWED; 761 } 762 763 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 764 hfp_connection->vra_status = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 765 return ERROR_CODE_SUCCESS; 766 } 767 768 static uint8_t hfp_ag_deactivate_voice_recognition_for_connection(hfp_connection_t * hfp_connection){ 769 if (!hfp_ag_voice_recognition_supported(hfp_connection)){ 770 return ERROR_CODE_COMMAND_DISALLOWED; 771 } 772 if (hfp_connection->vra_status != HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 773 return ERROR_CODE_COMMAND_DISALLOWED; 774 } 775 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 776 hfp_connection->vra_status = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 777 return ERROR_CODE_SUCCESS; 778 } 779 780 static int hfp_ag_voice_recognition_send(hfp_connection_t * hfp_connection, int value){ 781 int done = 0; 782 switch(hfp_connection->command){ 783 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 784 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 785 break; 786 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 787 done = hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, value); 788 break; 789 default: 790 btstack_unreachable(); 791 break; 792 } 793 return done; 794 } 795 796 static int hfp_ag_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 797 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 798 return 0; 799 } 800 int done = 0; 801 uint8_t status; 802 803 switch (hfp_connection->vra_status){ 804 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 805 done = hfp_ag_voice_recognition_send(hfp_connection, 0); 806 if (!done){ 807 return 0; 808 } 809 810 hfp_connection->vra_status = HFP_VRA_VOICE_RECOGNITION_OFF; 811 hfp_trigger_release_audio_connection(hfp_connection); 812 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS, 0); 813 break; 814 815 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 816 done = hfp_ag_voice_recognition_send(hfp_connection, 1); 817 818 if (!done){ 819 hfp_connection->vra_status = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 820 } 821 822 status = hfp_ag_setup_audio_connection(hfp_connection); 823 if (status != ERROR_CODE_SUCCESS){ 824 hfp_connection->vra_status = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 825 } 826 hfp_emit_voice_recognition_state_event(hfp_connection, status, 1); 827 break; 828 829 default: 830 if (hfp_connection->command == HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION){ 831 done = hfp_ag_send_error(hfp_connection->rfcomm_cid); 832 } 833 break; 834 } 835 return done; 836 } 837 838 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 839 int sent = codecs_exchange_state_machine(hfp_connection); 840 if (sent) return 1; 841 842 switch(hfp_connection->command){ 843 844 case HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION: 845 switch (hfp_connection->ag_vra_status){ 846 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_ACTIVATED: 847 hfp_connection->ag_vra_status = HFP_VRA_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 848 hfp_ag_send_enhanced_voice_recognition_cmd(hfp_connection->rfcomm_cid, 1, hfp_connection->ag_vra_state); 849 hfp_ag_setup_audio_connection(hfp_connection); 850 break; 851 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_STATUS: 852 hfp_connection->ag_vra_status = HFP_VRA_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 853 hfp_ag_send_enhanced_voice_recognition_cmd(hfp_connection->rfcomm_cid, 1, hfp_connection->ag_vra_state); 854 break; 855 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_OFF: 856 hfp_connection->ag_vra_status = HFP_VRA_VOICE_RECOGNITION_OFF; 857 hfp_ag_send_enhanced_voice_recognition_cmd(hfp_connection->rfcomm_cid, 0, hfp_connection->ag_vra_state); 858 hfp_trigger_release_audio_connection(hfp_connection); 859 break; 860 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_MSG: 861 hfp_connection->ag_vra_status = HFP_VRA_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 862 hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection); 863 break; 864 default: 865 return 0; 866 } 867 return 1; 868 869 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 870 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 871 return 1; 872 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 873 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 874 return 1; 875 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 876 if (hfp_connection->network_operator.format != 0){ 877 hfp_ag_send_error(hfp_connection->rfcomm_cid); 878 } else { 879 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 880 } 881 return 1; 882 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 883 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 884 return 1; 885 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 886 if (hfp_connection->extended_audio_gateway_error){ 887 hfp_connection->extended_audio_gateway_error = 0; 888 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 889 return 1; 890 } 891 break; 892 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 893 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 894 return 1; 895 default: 896 break; 897 } 898 return 0; 899 } 900 901 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 902 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 903 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 904 905 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 906 907 // accept incoming audio connection (codec negotiation is not used) 908 if (hfp_connection->accept_sco){ 909 // notify about codec selection if not done already 910 if (hfp_connection->negotiated_codec == 0){ 911 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 912 } 913 // 914 bool incoming_eSCO = hfp_connection->accept_sco == 2; 915 hfp_connection->accept_sco = 0; 916 hfp_connection->state = HFP_W4_SCO_CONNECTED; 917 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 918 return 1; 919 } 920 921 // run codecs exchange 922 int sent = codecs_exchange_state_machine(hfp_connection); 923 if (sent) return 1; 924 925 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 926 if (hfp_connection->establish_audio_connection){ 927 hfp_connection->state = HFP_W4_SCO_CONNECTED; 928 hfp_connection->establish_audio_connection = 0; 929 hfp_setup_synchronous_connection(hfp_connection); 930 return 1; 931 } 932 return 0; 933 } 934 935 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 936 btstack_linked_list_iterator_t it; 937 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 938 939 while (btstack_linked_list_iterator_has_next(&it)){ 940 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 941 if ( & hfp_connection->hfp_timeout == ts) { 942 return hfp_connection; 943 } 944 } 945 return NULL; 946 } 947 948 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 949 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 950 if (!hfp_connection) return; 951 952 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 953 hfp_connection->ag_ring = 1; 954 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 955 956 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 957 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 958 959 hfp_ag_run_for_context(hfp_connection); 960 } 961 962 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 963 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 964 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 965 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 966 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 967 } 968 969 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 970 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 971 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 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 // 993 // transitition implementations for hfp_ag_call_state_machine 994 // 995 996 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 997 if (use_in_band_tone()){ 998 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 999 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1000 } else { 1001 hfp_timeout_start(hfp_connection); 1002 hfp_connection->ag_ring = 1; 1003 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1004 hfp_connection->call_state = HFP_CALL_RINGING; 1005 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1006 } 1007 } 1008 1009 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 1010 hfp_connection->ag_ring = 0; 1011 hfp_connection->ag_send_clip = 0; 1012 hfp_timeout_stop(hfp_connection); 1013 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 1014 } 1015 1016 static void hfp_ag_trigger_incoming_call(void){ 1017 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 1018 if (indicator_index < 0) return; 1019 1020 btstack_linked_list_iterator_t it; 1021 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1022 while (btstack_linked_list_iterator_has_next(&it)){ 1023 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1024 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1025 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1026 if (hfp_connection->call_state == HFP_CALL_IDLE){ 1027 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1028 hfp_ag_hf_start_ringing(hfp_connection); 1029 } 1030 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 1031 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 1032 } 1033 hfp_ag_run_for_context(hfp_connection); 1034 } 1035 } 1036 1037 static void hfp_ag_trigger_outgoing_call(void){ 1038 btstack_linked_list_iterator_t it; 1039 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1040 while (btstack_linked_list_iterator_has_next(&it)){ 1041 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1042 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1043 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1044 if (hfp_connection->call_state == HFP_CALL_IDLE){ 1045 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1046 } 1047 } 1048 } 1049 1050 static void hfp_ag_handle_outgoing_call_accepted(hfp_connection_t * hfp_connection){ 1051 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1052 1053 // trigger callsetup to be 1054 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1055 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1056 1057 int indicator_index ; 1058 1059 hfp_ag_set_callsetup_indicator(); 1060 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1061 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1062 1063 // put current call on hold if active 1064 if (put_call_on_hold){ 1065 log_info("AG putting current call on hold for new outgoing call"); 1066 hfp_ag_set_callheld_indicator(); 1067 indicator_index = get_ag_indicator_index_for_name("callheld"); 1068 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1069 } 1070 1071 // start audio if needed 1072 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1073 } 1074 1075 static void hfp_ag_transfer_indicator(const char * name){ 1076 int indicator_index = get_ag_indicator_index_for_name(name); 1077 if (indicator_index < 0) return; 1078 1079 btstack_linked_list_iterator_t it; 1080 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1081 while (btstack_linked_list_iterator_has_next(&it)){ 1082 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1083 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1084 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1085 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1086 hfp_ag_run_for_context(hfp_connection); 1087 } 1088 } 1089 1090 static void hfp_ag_transfer_callsetup_state(void){ 1091 hfp_ag_transfer_indicator("callsetup"); 1092 } 1093 1094 static void hfp_ag_transfer_call_state(void){ 1095 hfp_ag_transfer_indicator("call"); 1096 } 1097 1098 static void hfp_ag_transfer_callheld_state(void){ 1099 hfp_ag_transfer_indicator("callheld"); 1100 } 1101 1102 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 1103 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1104 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1105 1106 btstack_linked_list_iterator_t it; 1107 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1108 while (btstack_linked_list_iterator_has_next(&it)){ 1109 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1110 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1111 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1112 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1113 1114 hfp_ag_hf_stop_ringing(hfp_connection); 1115 if (hfp_connection == source){ 1116 1117 if (use_in_band_tone()){ 1118 hfp_connection->call_state = HFP_CALL_ACTIVE; 1119 } else { 1120 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 1121 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1122 } 1123 1124 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1125 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1126 1127 } else { 1128 hfp_connection->call_state = HFP_CALL_IDLE; 1129 } 1130 hfp_ag_run_for_context(hfp_connection); 1131 } 1132 } 1133 1134 static void hfp_ag_ag_accept_call(void){ 1135 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1136 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1137 1138 btstack_linked_list_iterator_t it; 1139 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1140 while (btstack_linked_list_iterator_has_next(&it)){ 1141 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1142 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1143 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 1144 1145 hfp_ag_hf_stop_ringing(hfp_connection); 1146 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1147 1148 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1149 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1150 1151 hfp_ag_run_for_context(hfp_connection); 1152 break; // only single 1153 } 1154 } 1155 1156 static void hfp_ag_trigger_reject_call(void){ 1157 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1158 btstack_linked_list_iterator_t it; 1159 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1160 while (btstack_linked_list_iterator_has_next(&it)){ 1161 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1162 if (connection->local_role != HFP_ROLE_AG) continue; 1163 if ((connection->call_state != HFP_CALL_RINGING) && 1164 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1165 hfp_ag_hf_stop_ringing(connection); 1166 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1167 connection->call_state = HFP_CALL_IDLE; 1168 hfp_ag_run_for_context(connection); 1169 } 1170 } 1171 1172 static void hfp_ag_trigger_terminate_call(void){ 1173 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1174 1175 btstack_linked_list_iterator_t it; 1176 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1177 while (btstack_linked_list_iterator_has_next(&it)){ 1178 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1179 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1180 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1181 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1182 hfp_connection->call_state = HFP_CALL_IDLE; 1183 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1184 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1185 hfp_connection->release_audio_connection = 1; 1186 } 1187 hfp_ag_run_for_context(hfp_connection); 1188 } 1189 hfp_emit_simple_event(NULL, HFP_SUBEVENT_CALL_TERMINATED); 1190 } 1191 1192 static void hfp_ag_set_call_indicator(void){ 1193 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1194 if (!indicator){ 1195 log_error("hfp_ag_set_call_state: call indicator is missing"); 1196 return; 1197 }; 1198 indicator->status = hfp_gsm_call_status(); 1199 } 1200 1201 static void hfp_ag_stop_ringing(void){ 1202 btstack_linked_list_iterator_t it; 1203 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1204 while (btstack_linked_list_iterator_has_next(&it)){ 1205 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1206 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1207 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1208 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1209 hfp_ag_hf_stop_ringing(hfp_connection); 1210 } 1211 } 1212 1213 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1214 btstack_linked_list_iterator_t it; 1215 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1216 while (btstack_linked_list_iterator_has_next(&it)){ 1217 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1218 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1219 if (hfp_connection->call_state == call_state) return hfp_connection; 1220 } 1221 return NULL; 1222 } 1223 1224 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1225 btstack_linked_list_iterator_t it; 1226 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1227 while (btstack_linked_list_iterator_has_next(&it)){ 1228 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1229 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1230 hfp_connection->send_response_and_hold_status = state + 1; 1231 } 1232 } 1233 1234 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1235 int indicator_index; 1236 switch (hfp_connection->call_state){ 1237 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1238 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1239 // we got event: audio hfp_connection established 1240 hfp_timeout_start(hfp_connection); 1241 hfp_connection->ag_ring = 1; 1242 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1243 hfp_connection->call_state = HFP_CALL_RINGING; 1244 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1245 break; 1246 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1247 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1248 // we got event: audio hfp_connection established 1249 hfp_connection->call_state = HFP_CALL_ACTIVE; 1250 break; 1251 case HFP_CALL_W2_SEND_CALL_WAITING: 1252 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1253 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1254 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1255 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1256 break; 1257 default: 1258 break; 1259 } 1260 return 0; 1261 } 1262 1263 // functions extracted from hfp_ag_call_sm below 1264 static void hfp_ag_handle_reject_outgoing_call(void){ 1265 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1266 if (!hfp_connection){ 1267 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1268 return; 1269 } 1270 1271 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1272 hfp_connection->call_state = HFP_CALL_IDLE; 1273 hfp_connection->send_error = 1; 1274 hfp_ag_run_for_context(hfp_connection); 1275 } 1276 1277 // hfp_connection is used to identify originating HF 1278 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1279 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1280 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1281 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1282 1283 switch (event){ 1284 case HFP_AG_INCOMING_CALL: 1285 switch (hfp_gsm_call_status()){ 1286 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1287 switch (hfp_gsm_callsetup_status()){ 1288 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1289 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1290 hfp_ag_set_callsetup_indicator(); 1291 hfp_ag_trigger_incoming_call(); 1292 log_info("AG rings"); 1293 break; 1294 default: 1295 break; 1296 } 1297 break; 1298 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1299 switch (hfp_gsm_callsetup_status()){ 1300 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1301 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1302 hfp_ag_set_callsetup_indicator(); 1303 hfp_ag_trigger_incoming_call(); 1304 log_info("AG call waiting"); 1305 break; 1306 default: 1307 break; 1308 } 1309 break; 1310 default: 1311 break; 1312 } 1313 break; 1314 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1315 switch (hfp_gsm_call_status()){ 1316 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1317 switch (hfp_gsm_callsetup_status()){ 1318 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1319 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1320 hfp_ag_set_call_indicator(); 1321 hfp_ag_set_callsetup_indicator(); 1322 hfp_ag_ag_accept_call(); 1323 log_info("AG answers call, accept call by GSM"); 1324 break; 1325 default: 1326 break; 1327 } 1328 break; 1329 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1330 switch (hfp_gsm_callsetup_status()){ 1331 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1332 log_info("AG: current call is placed on hold, incoming call gets active"); 1333 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1334 hfp_ag_set_callsetup_indicator(); 1335 hfp_ag_set_callheld_indicator(); 1336 hfp_ag_transfer_callsetup_state(); 1337 hfp_ag_transfer_callheld_state(); 1338 break; 1339 default: 1340 break; 1341 } 1342 break; 1343 default: 1344 break; 1345 } 1346 break; 1347 1348 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1349 switch (hfp_gsm_call_status()){ 1350 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1351 switch (hfp_gsm_callheld_status()){ 1352 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1353 log_info("AG: joining held call with active call"); 1354 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1355 hfp_ag_set_callheld_indicator(); 1356 hfp_ag_transfer_callheld_state(); 1357 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1358 break; 1359 default: 1360 break; 1361 } 1362 break; 1363 default: 1364 break; 1365 } 1366 break; 1367 1368 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1369 switch (hfp_gsm_call_status()){ 1370 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1371 switch (hfp_gsm_callsetup_status()){ 1372 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1373 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1374 hfp_ag_set_callsetup_indicator(); 1375 hfp_ag_set_call_indicator(); 1376 hfp_ag_hf_accept_call(hfp_connection); 1377 hfp_connection->ok_pending = 1; 1378 log_info("HF answers call, accept call by GSM"); 1379 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1380 break; 1381 default: 1382 break; 1383 } 1384 break; 1385 default: 1386 break; 1387 } 1388 break; 1389 1390 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1391 switch (hfp_gsm_call_status()){ 1392 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1393 switch (hfp_gsm_callsetup_status()){ 1394 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1395 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1396 hfp_ag_response_and_hold_active = 1; 1397 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1398 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1399 // as with regular call 1400 hfp_ag_set_call_indicator(); 1401 hfp_ag_set_callsetup_indicator(); 1402 hfp_ag_ag_accept_call(); 1403 log_info("AG response and hold - hold by AG"); 1404 break; 1405 default: 1406 break; 1407 } 1408 break; 1409 default: 1410 break; 1411 } 1412 break; 1413 1414 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1415 switch (hfp_gsm_call_status()){ 1416 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1417 switch (hfp_gsm_callsetup_status()){ 1418 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1419 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1420 hfp_ag_response_and_hold_active = 1; 1421 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1422 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1423 // as with regular call 1424 hfp_ag_set_call_indicator(); 1425 hfp_ag_set_callsetup_indicator(); 1426 hfp_ag_hf_accept_call(hfp_connection); 1427 log_info("AG response and hold - hold by HF"); 1428 break; 1429 default: 1430 break; 1431 } 1432 break; 1433 default: 1434 break; 1435 } 1436 break; 1437 1438 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1439 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1440 if (!hfp_ag_response_and_hold_active) break; 1441 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1442 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1443 hfp_ag_response_and_hold_active = 0; 1444 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1445 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1446 log_info("Held Call accepted and active"); 1447 break; 1448 1449 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1450 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1451 if (!hfp_ag_response_and_hold_active) break; 1452 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1453 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1454 hfp_ag_response_and_hold_active = 0; 1455 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1456 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1457 // from terminate by ag 1458 hfp_ag_set_call_indicator(); 1459 hfp_ag_trigger_terminate_call(); 1460 break; 1461 1462 case HFP_AG_TERMINATE_CALL_BY_HF: 1463 switch (hfp_gsm_call_status()){ 1464 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1465 switch (hfp_gsm_callsetup_status()){ 1466 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1467 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1468 hfp_ag_set_callsetup_indicator(); 1469 hfp_ag_transfer_callsetup_state(); 1470 hfp_ag_trigger_reject_call(); 1471 log_info("HF Rejected Incoming call, AG terminate call"); 1472 break; 1473 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1474 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1475 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1476 hfp_ag_set_callsetup_indicator(); 1477 hfp_ag_transfer_callsetup_state(); 1478 log_info("AG terminate outgoing call process"); 1479 break; 1480 default: 1481 break; 1482 } 1483 break; 1484 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1485 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1486 hfp_ag_set_callsetup_indicator(); 1487 hfp_ag_set_call_indicator(); 1488 hfp_ag_trigger_terminate_call(); 1489 log_info("AG terminate call"); 1490 break; 1491 default: 1492 break; 1493 } 1494 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1495 break; 1496 1497 case HFP_AG_TERMINATE_CALL_BY_AG: 1498 switch (hfp_gsm_call_status()){ 1499 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1500 switch (hfp_gsm_callsetup_status()){ 1501 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1502 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1503 hfp_ag_set_callsetup_indicator(); 1504 hfp_ag_trigger_reject_call(); 1505 log_info("AG Rejected Incoming call, AG terminate call"); 1506 break; 1507 default: 1508 break; 1509 } 1510 break; 1511 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1512 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1513 hfp_ag_set_callsetup_indicator(); 1514 hfp_ag_set_call_indicator(); 1515 hfp_ag_trigger_terminate_call(); 1516 log_info("AG terminate call"); 1517 break; 1518 default: 1519 break; 1520 } 1521 break; 1522 case HFP_AG_CALL_DROPPED: 1523 switch (hfp_gsm_call_status()){ 1524 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1525 switch (hfp_gsm_callsetup_status()){ 1526 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1527 hfp_ag_stop_ringing(); 1528 log_info("Incoming call interrupted"); 1529 break; 1530 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1531 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1532 log_info("Outgoing call interrupted\n"); 1533 log_info("AG notify call dropped\n"); 1534 break; 1535 default: 1536 break; 1537 } 1538 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1539 hfp_ag_set_callsetup_indicator(); 1540 hfp_ag_transfer_callsetup_state(); 1541 hfp_ag_trigger_terminate_call(); 1542 break; 1543 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1544 if (hfp_ag_response_and_hold_active) { 1545 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1546 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1547 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1548 } 1549 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1550 hfp_ag_set_callsetup_indicator(); 1551 hfp_ag_set_call_indicator(); 1552 hfp_ag_trigger_terminate_call(); 1553 log_info("AG notify call dropped"); 1554 break; 1555 default: 1556 break; 1557 } 1558 break; 1559 1560 case HFP_AG_OUTGOING_CALL_INITIATED_BY_HF: 1561 // directly reject call if number of free slots is exceeded 1562 if (!hfp_gsm_call_possible()){ 1563 hfp_connection->send_error = 1; 1564 hfp_ag_run_for_context(hfp_connection); 1565 break; 1566 } 1567 1568 // note: number not used currently 1569 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1570 1571 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1572 1573 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1574 break; 1575 1576 case HFP_AG_OUTGOING_CALL_INITIATED_BY_AG: 1577 // directly reject call if number of free slots is exceeded 1578 if (!hfp_gsm_call_possible()) { 1579 // TODO: no error for user 1580 break; 1581 } 1582 switch (hfp_gsm_call_status()) { 1583 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1584 switch (hfp_gsm_callsetup_status()) { 1585 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1586 // note: number not used currently 1587 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, 0, 0, "1234567"); 1588 // init call state for all connections 1589 hfp_ag_trigger_outgoing_call(); 1590 // get first one and accept call 1591 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1592 if (hfp_connection) { 1593 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1594 } 1595 break; 1596 default: 1597 // TODO: no error for user 1598 break; 1599 } 1600 break; 1601 default: 1602 // TODO: no error for user 1603 break; 1604 } 1605 break; 1606 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1607 // directly reject call if number of free slots is exceeded 1608 if (!hfp_gsm_call_possible()){ 1609 hfp_connection->send_error = 1; 1610 hfp_ag_run_for_context(hfp_connection); 1611 break; 1612 } 1613 1614 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1615 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1616 1617 log_info("Redial last number"); 1618 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1619 1620 if (strlen(last_dialed_number) > 0){ 1621 log_info("Last number exists: accept call"); 1622 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1623 } else { 1624 log_info("log_infoLast number missing: reject call"); 1625 hfp_ag_handle_reject_outgoing_call(); 1626 } 1627 break; 1628 } 1629 case HFP_AG_OUTGOING_CALL_REJECTED: 1630 hfp_ag_handle_reject_outgoing_call(); 1631 break; 1632 1633 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1634 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1635 if (!hfp_connection){ 1636 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1637 break; 1638 } 1639 1640 hfp_connection->ok_pending = 1; 1641 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1642 break; 1643 } 1644 case HFP_AG_OUTGOING_CALL_RINGING: 1645 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1646 if (!hfp_connection){ 1647 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1648 break; 1649 } 1650 1651 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1652 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1653 hfp_ag_set_callsetup_indicator(); 1654 hfp_ag_transfer_callsetup_state(); 1655 break; 1656 1657 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1658 // get outgoing call 1659 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1660 if (!hfp_connection){ 1661 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1662 } 1663 if (!hfp_connection){ 1664 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1665 break; 1666 } 1667 1668 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1669 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1670 hfp_connection->call_state = HFP_CALL_ACTIVE; 1671 hfp_ag_set_callsetup_indicator(); 1672 hfp_ag_set_call_indicator(); 1673 hfp_ag_transfer_call_state(); 1674 hfp_ag_transfer_callsetup_state(); 1675 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1676 hfp_ag_set_callheld_indicator(); 1677 hfp_ag_transfer_callheld_state(); 1678 } 1679 break; 1680 } 1681 1682 case HFP_AG_CALL_HOLD_USER_BUSY: 1683 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1684 hfp_ag_set_callsetup_indicator(); 1685 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1686 hfp_connection->call_state = HFP_CALL_ACTIVE; 1687 log_info("AG: Call Waiting, User Busy"); 1688 break; 1689 1690 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1691 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1692 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1693 1694 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1695 if (call_held || call_setup_in_progress){ 1696 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1697 0, NULL); 1698 1699 } 1700 1701 if (call_setup_in_progress){ 1702 log_info("AG: Call Dropped, Accept new call"); 1703 hfp_ag_set_callsetup_indicator(); 1704 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1705 } else { 1706 log_info("AG: Call Dropped, Resume held call"); 1707 } 1708 if (call_held){ 1709 hfp_ag_set_callheld_indicator(); 1710 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1711 } 1712 1713 hfp_connection->call_state = HFP_CALL_ACTIVE; 1714 break; 1715 } 1716 1717 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1718 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1719 // only update if callsetup changed 1720 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1721 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1722 NULL); 1723 1724 if (call_setup_in_progress){ 1725 log_info("AG: Call on Hold, Accept new call"); 1726 hfp_ag_set_callsetup_indicator(); 1727 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1728 } else { 1729 log_info("AG: Swap calls"); 1730 } 1731 1732 hfp_ag_set_callheld_indicator(); 1733 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1734 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1735 hfp_connection->call_state = HFP_CALL_ACTIVE; 1736 break; 1737 } 1738 1739 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1740 // Adds a held call to the conversation. 1741 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1742 log_info("AG: Join 3-way-call"); 1743 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1744 hfp_ag_set_callheld_indicator(); 1745 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1746 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1747 } 1748 hfp_connection->call_state = HFP_CALL_ACTIVE; 1749 break; 1750 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1751 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1752 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1753 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1754 hfp_ag_set_call_indicator(); 1755 hfp_ag_set_callheld_indicator(); 1756 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1757 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1758 hfp_connection->call_state = HFP_CALL_IDLE; 1759 break; 1760 1761 default: 1762 break; 1763 } 1764 1765 1766 } 1767 1768 1769 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1770 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1771 if (!active_call) return; 1772 1773 int idx = active_call->index; 1774 hfp_enhanced_call_dir_t dir = active_call->direction; 1775 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1776 hfp_enhanced_call_mode_t mode = active_call->mode; 1777 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1778 uint8_t type = active_call->clip_type; 1779 char * number = active_call->clip_number; 1780 1781 char buffer[100]; 1782 // TODO: check length of a buffer, to fit the MTU 1783 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1784 if (number){ 1785 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1786 } 1787 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1788 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, 1789 mode, mpty, type, number); 1790 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1791 } 1792 1793 1794 // sends pending command, returns if command was sent 1795 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1796 1797 if (hfp_connection->send_status_of_current_calls){ 1798 hfp_connection->ok_pending = 0; 1799 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1800 hfp_connection->next_call_index++; 1801 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1802 return 1; 1803 } else { 1804 // 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 1805 hfp_connection->next_call_index = 0; 1806 hfp_connection->ok_pending = 1; 1807 hfp_connection->send_status_of_current_calls = 0; 1808 } 1809 } 1810 1811 if (hfp_connection->ag_notify_incoming_call_waiting){ 1812 hfp_connection->ag_notify_incoming_call_waiting = 0; 1813 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1814 return 1; 1815 } 1816 1817 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1818 hfp_connection->ok_pending = 0; 1819 hfp_connection->send_error = 0; 1820 hfp_connection->command = HFP_CMD_NONE; 1821 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1822 return 1; 1823 } 1824 1825 if (hfp_connection->send_error){ 1826 hfp_connection->send_error = 0; 1827 hfp_connection->command = HFP_CMD_NONE; 1828 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1829 return 1; 1830 } 1831 1832 // note: before update AG indicators and ok_pending 1833 if (hfp_connection->send_response_and_hold_status){ 1834 int status = hfp_connection->send_response_and_hold_status - 1; 1835 hfp_connection->send_response_and_hold_status = 0; 1836 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1837 return 1; 1838 } 1839 1840 if (hfp_connection->ok_pending){ 1841 hfp_connection->ok_pending = 0; 1842 hfp_connection->command = HFP_CMD_NONE; 1843 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1844 return 1; 1845 } 1846 1847 // update AG indicators 1848 if (hfp_connection->ag_indicators_status_update_bitmap){ 1849 int i; 1850 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1851 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1852 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1853 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1854 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1855 break; 1856 } 1857 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1858 return 1; 1859 } 1860 } 1861 } 1862 1863 if (hfp_connection->ag_send_no_carrier){ 1864 hfp_connection->ag_send_no_carrier = false; 1865 hfp_ag_send_no_carrier(hfp_connection->rfcomm_cid); 1866 return 1; 1867 } 1868 1869 if (hfp_connection->ag_ring){ 1870 hfp_connection->ag_ring = 0; 1871 hfp_connection->command = HFP_CMD_NONE; 1872 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1873 return 1; 1874 } 1875 1876 if (hfp_connection->ag_send_clip){ 1877 hfp_connection->ag_send_clip = 0; 1878 hfp_connection->command = HFP_CMD_NONE; 1879 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1880 return 1; 1881 } 1882 1883 if (hfp_connection->send_phone_number_for_voice_tag){ 1884 hfp_connection->send_phone_number_for_voice_tag = 0; 1885 hfp_connection->command = HFP_CMD_NONE; 1886 hfp_connection->ok_pending = 1; 1887 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1888 return 1; 1889 } 1890 1891 if (hfp_connection->send_subscriber_number){ 1892 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1893 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1894 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1895 } else { 1896 hfp_connection->send_subscriber_number = 0; 1897 hfp_connection->next_subscriber_number_to_send = 0; 1898 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1899 } 1900 hfp_connection->command = HFP_CMD_NONE; 1901 return 1; 1902 } 1903 1904 if (hfp_connection->send_microphone_gain){ 1905 hfp_connection->send_microphone_gain = 0; 1906 hfp_connection->command = HFP_CMD_NONE; 1907 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1908 return 1; 1909 } 1910 1911 if (hfp_connection->send_speaker_gain){ 1912 hfp_connection->send_speaker_gain = 0; 1913 hfp_connection->command = HFP_CMD_NONE; 1914 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1915 return 1; 1916 } 1917 1918 if (hfp_connection->send_ag_status_indicators){ 1919 hfp_connection->send_ag_status_indicators = 0; 1920 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1921 return 1; 1922 } 1923 1924 return 0; 1925 } 1926 1927 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1928 1929 btstack_assert(hfp_connection != NULL); 1930 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1931 1932 // during SDP query, RFCOMM CID is not set 1933 if (hfp_connection->rfcomm_cid == 0) return; 1934 1935 // assert command could be sent 1936 if (hci_can_send_command_packet_now() == 0) return; 1937 1938 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 1939 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 1940 hfp_connection->release_audio_connection = 0; 1941 gap_disconnect(hfp_connection->sco_handle); 1942 return; 1943 } 1944 1945 #ifdef ENABLE_CC256X_ASSISTED_HFP 1946 // WBS Disassociate 1947 if (hfp_connection->cc256x_send_wbs_disassociate){ 1948 hfp_connection->cc256x_send_wbs_disassociate = false; 1949 hci_send_cmd(&hci_ti_wbs_disassociate); 1950 return; 1951 } 1952 // Write Codec Config 1953 if (hfp_connection->cc256x_send_write_codec_config){ 1954 hfp_connection->cc256x_send_write_codec_config = false; 1955 hfp_cc256x_write_codec_config(hfp_connection); 1956 return; 1957 } 1958 // WBS Associate 1959 if (hfp_connection->cc256x_send_wbs_associate){ 1960 hfp_connection->cc256x_send_wbs_associate = false; 1961 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 1962 return; 1963 } 1964 #endif 1965 #ifdef ENABLE_BCM_PCM_WBS 1966 // Enable WBS 1967 if (hfp_connection->bcm_send_enable_wbs){ 1968 hfp_connection->bcm_send_enable_wbs = false; 1969 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 1970 return; 1971 } 1972 // Write I2S/PCM params 1973 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 1974 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 1975 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 1976 return; 1977 } 1978 // Disable WBS 1979 if (hfp_connection->bcm_send_disable_wbs){ 1980 hfp_connection->bcm_send_disable_wbs = false; 1981 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 1982 return; 1983 } 1984 #endif 1985 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 1986 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 1987 hfp_finalize_connection_context(hfp_connection); 1988 return; 1989 } 1990 #endif 1991 1992 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1993 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1994 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1995 return; 1996 } 1997 1998 int cmd_sent = hfp_ag_send_commands(hfp_connection); 1999 2000 if (!cmd_sent){ 2001 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 2002 } 2003 2004 if (!cmd_sent){ 2005 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 2006 } 2007 2008 if (!cmd_sent){ 2009 cmd_sent = hfp_ag_voice_recognition_state_machine(hfp_connection); 2010 } 2011 2012 if (!cmd_sent){ 2013 cmd_sent = call_setup_state_machine(hfp_connection); 2014 } 2015 2016 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 2017 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 2018 switch (hfp_connection->codecs_state){ 2019 case HFP_CODECS_IDLE: 2020 case HFP_CODECS_RECEIVED_LIST: 2021 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2022 case HFP_CODECS_ERROR: 2023 hfp_connection->trigger_codec_exchange = 0; 2024 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2025 break; 2026 default: 2027 break; 2028 } 2029 } 2030 2031 if (!cmd_sent){ 2032 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 2033 } 2034 2035 2036 // disconnect 2037 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 2038 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 2039 rfcomm_disconnect(hfp_connection->rfcomm_cid); 2040 } 2041 2042 if (cmd_sent){ 2043 hfp_connection->command = HFP_CMD_NONE; 2044 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2045 } 2046 } 2047 2048 static int hfp_parser_is_end_of_line(uint8_t byte){ 2049 return (byte == '\n') || (byte == '\r'); 2050 } 2051 2052 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2053 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 2054 2055 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 2056 if (size < 1) return; 2057 2058 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 2059 if (!hfp_connection) return; 2060 2061 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 2062 #ifdef ENABLE_HFP_AT_MESSAGES 2063 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 2064 #endif 2065 2066 // process messages byte-wise 2067 int pos; 2068 for (pos = 0; pos < size ; pos++){ 2069 hfp_parse(hfp_connection, packet[pos], 0); 2070 2071 // parse until end of line 2072 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 2073 2074 hfp_generic_status_indicator_t * indicator; 2075 switch(hfp_connection->command){ 2076 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 2077 if (hfp_connection->ag_activate_voice_recognition == 0){ 2078 hfp_ag_deactivate_voice_recognition_for_connection(hfp_connection); 2079 } else { 2080 hfp_ag_activate_voice_recognition_for_connection(hfp_connection); 2081 } 2082 break; 2083 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 2084 if (hfp_ag_response_and_hold_active){ 2085 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 2086 } 2087 hfp_connection->ok_pending = 1; 2088 break; 2089 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 2090 switch(hfp_connection->ag_response_and_hold_action){ 2091 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 2092 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 2093 break; 2094 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 2095 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 2096 break; 2097 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 2098 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 2099 break; 2100 default: 2101 break; 2102 } 2103 hfp_connection->ok_pending = 1; 2104 break; 2105 case HFP_CMD_HF_INDICATOR_STATUS: 2106 hfp_connection->command = HFP_CMD_NONE; 2107 if (hfp_connection->parser_indicator_index < hfp_generic_status_indicators_nr){ 2108 indicator = &hfp_generic_status_indicators[hfp_connection->parser_indicator_index]; 2109 } else { 2110 hfp_connection->send_error = 1; 2111 break; 2112 } 2113 switch (indicator->uuid){ 2114 case 1: // enhanced security 2115 if (hfp_connection->parser_indicator_value > 1) { 2116 hfp_connection->send_error = 1; 2117 return; 2118 } 2119 log_info("HF Indicator 'enhanced security' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2120 break; 2121 case 2: // battery level 2122 if (hfp_connection->parser_indicator_value > 100){ 2123 hfp_connection->send_error = 1; 2124 return; 2125 } 2126 log_info("HF Indicator 'battery' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2127 break; 2128 default: 2129 log_info("HF Indicator unknown set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2130 break; 2131 } 2132 hfp_connection->ok_pending = 1; 2133 break; 2134 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 2135 // expected by SLC state machine 2136 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 2137 hfp_connection->send_ag_indicators_segment = 0; 2138 hfp_connection->send_ag_status_indicators = 1; 2139 break; 2140 case HFP_CMD_LIST_CURRENT_CALLS: 2141 hfp_connection->command = HFP_CMD_NONE; 2142 hfp_connection->next_call_index = 0; 2143 hfp_connection->send_status_of_current_calls = 1; 2144 break; 2145 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 2146 if (subscriber_numbers_count == 0){ 2147 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2148 break; 2149 } 2150 hfp_connection->next_subscriber_number_to_send = 0; 2151 hfp_connection->send_subscriber_number = 1; 2152 break; 2153 case HFP_CMD_TRANSMIT_DTMF_CODES: 2154 { 2155 hfp_connection->command = HFP_CMD_NONE; 2156 char buffer[2]; 2157 buffer[0] = (char) hfp_connection->ag_dtmf_code; 2158 buffer[1] = 0; 2159 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 2160 break; 2161 } 2162 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 2163 hfp_connection->command = HFP_CMD_NONE; 2164 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 2165 break; 2166 case HFP_CMD_TURN_OFF_EC_AND_NR: 2167 hfp_connection->command = HFP_CMD_NONE; 2168 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 2169 hfp_connection->ok_pending = 1; 2170 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 2171 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 2172 } else { 2173 hfp_connection->send_error = 1; 2174 } 2175 break; 2176 case HFP_CMD_CALL_ANSWERED: 2177 hfp_connection->command = HFP_CMD_NONE; 2178 log_info("HFP: ATA"); 2179 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 2180 break; 2181 case HFP_CMD_HANG_UP_CALL: 2182 hfp_connection->command = HFP_CMD_NONE; 2183 hfp_connection->ok_pending = 1; 2184 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 2185 break; 2186 case HFP_CMD_CALL_HOLD: { 2187 hfp_connection->command = HFP_CMD_NONE; 2188 hfp_connection->ok_pending = 1; 2189 2190 switch (hfp_connection->ag_call_hold_action){ 2191 case 0: 2192 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2193 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2194 break; 2195 case 1: 2196 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2197 // Where both a held and a waiting call exist, the above procedures shall apply to the 2198 // waiting call (i.e., not to the held call) in conflicting situation. 2199 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2200 break; 2201 case 2: 2202 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2203 // Where both a held and a waiting call exist, the above procedures shall apply to the 2204 // waiting call (i.e., not to the held call) in conflicting situation. 2205 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2206 break; 2207 case 3: 2208 // Adds a held call to the conversation. 2209 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2210 break; 2211 case 4: 2212 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2213 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2214 break; 2215 default: 2216 break; 2217 } 2218 hfp_connection->call_index = 0; 2219 break; 2220 } 2221 case HFP_CMD_CALL_PHONE_NUMBER: 2222 hfp_connection->command = HFP_CMD_NONE; 2223 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, hfp_connection); 2224 break; 2225 case HFP_CMD_REDIAL_LAST_NUMBER: 2226 hfp_connection->command = HFP_CMD_NONE; 2227 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2228 break; 2229 case HFP_CMD_ENABLE_CLIP: 2230 hfp_connection->command = HFP_CMD_NONE; 2231 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2232 hfp_connection->ok_pending = 1; 2233 break; 2234 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2235 hfp_connection->command = HFP_CMD_NONE; 2236 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2237 hfp_connection->ok_pending = 1; 2238 break; 2239 case HFP_CMD_SET_SPEAKER_GAIN: 2240 hfp_connection->command = HFP_CMD_NONE; 2241 hfp_connection->ok_pending = 1; 2242 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2243 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2244 break; 2245 case HFP_CMD_SET_MICROPHONE_GAIN: 2246 hfp_connection->command = HFP_CMD_NONE; 2247 hfp_connection->ok_pending = 1; 2248 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2249 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2250 break; 2251 default: 2252 break; 2253 } 2254 } 2255 } 2256 2257 static void hfp_ag_run(void){ 2258 btstack_linked_list_iterator_t it; 2259 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2260 while (btstack_linked_list_iterator_has_next(&it)){ 2261 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2262 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2263 hfp_ag_run_for_context(hfp_connection); 2264 } 2265 } 2266 2267 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2268 switch (packet_type){ 2269 case RFCOMM_DATA_PACKET: 2270 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 2271 break; 2272 case HCI_EVENT_PACKET: 2273 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2274 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2275 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2276 return; 2277 } 2278 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2279 break; 2280 default: 2281 break; 2282 } 2283 2284 hfp_ag_run(); 2285 } 2286 2287 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2288 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2289 hfp_ag_run(); 2290 } 2291 2292 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2293 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2294 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2295 return; 2296 } 2297 int i; 2298 hfp_codecs_nr = codecs_nr; 2299 for (i=0; i < codecs_nr; i++){ 2300 hfp_codecs[i] = codecs[i]; 2301 } 2302 } 2303 2304 void hfp_ag_init_supported_features(uint32_t supported_features){ 2305 hfp_supported_features = supported_features; 2306 } 2307 2308 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2309 hfp_ag_indicators_nr = ag_indicators_nr; 2310 (void)memcpy(hfp_ag_indicators, ag_indicators, 2311 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2312 } 2313 2314 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2315 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2316 hfp_generic_status_indicators_nr = hf_indicators_nr; 2317 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2318 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2319 } 2320 2321 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2322 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2323 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2324 call_hold_services_nr * sizeof(char *)); 2325 } 2326 2327 2328 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2329 2330 hfp_init(); 2331 hfp_ag_call_hold_services_nr = 0; 2332 hfp_ag_response_and_hold_active = 0; 2333 hfp_ag_indicators_nr = 0; 2334 hfp_codecs_nr = 0; 2335 hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2336 subscriber_numbers = NULL; 2337 subscriber_numbers_count = 0; 2338 2339 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2340 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2341 2342 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2343 2344 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2345 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2346 2347 hfp_gsm_init(); 2348 } 2349 2350 void hfp_ag_deinit(void){ 2351 hfp_deinit(); 2352 hfp_gsm_deinit(); 2353 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2354 (void) memset(&hfp_ag_callback, 0, sizeof(btstack_packet_handler_t)); 2355 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2356 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2357 } 2358 2359 uint8_t hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2360 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2361 } 2362 2363 uint8_t hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2364 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2365 if (!hfp_connection){ 2366 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2367 } 2368 2369 hfp_trigger_release_service_level_connection(hfp_connection); 2370 hfp_ag_run_for_context(hfp_connection); 2371 return ERROR_CODE_SUCCESS; 2372 } 2373 2374 uint8_t hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2375 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2376 if (!hfp_connection){ 2377 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2378 } 2379 2380 hfp_connection->extended_audio_gateway_error = 0; 2381 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2382 return ERROR_CODE_COMMAND_DISALLOWED; 2383 } 2384 2385 hfp_connection->extended_audio_gateway_error = error; 2386 hfp_ag_run_for_context(hfp_connection); 2387 return ERROR_CODE_SUCCESS; 2388 } 2389 2390 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2391 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 2392 return ERROR_CODE_COMMAND_DISALLOWED; 2393 } 2394 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 2395 return ERROR_CODE_COMMAND_DISALLOWED; 2396 } 2397 2398 hfp_connection->establish_audio_connection = 1; 2399 if (!has_codec_negotiation_feature(hfp_connection)){ 2400 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2401 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2402 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2403 // now, pick link settings 2404 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2405 #ifdef ENABLE_CC256X_ASSISTED_HFP 2406 hfp_cc256x_prepare_for_sco(hfp_connection); 2407 #endif 2408 return ERROR_CODE_SUCCESS; 2409 } 2410 2411 uint8_t i; 2412 bool codec_was_in_use = false; 2413 bool better_codec_can_be_used = false; 2414 2415 for (i = 0; i<hfp_connection->remote_codecs_nr; i++){ 2416 if (hfp_connection->negotiated_codec == hfp_connection->remote_codecs[i]){ 2417 codec_was_in_use = true; 2418 } else if (hfp_connection->negotiated_codec < hfp_connection->remote_codecs[i]){ 2419 better_codec_can_be_used = true; 2420 } 2421 } 2422 2423 if (!codec_was_in_use || better_codec_can_be_used){ 2424 hfp_connection->trigger_codec_exchange = 1; 2425 hfp_connection->codecs_state = HFP_CODECS_IDLE; 2426 } 2427 return ERROR_CODE_SUCCESS; 2428 } 2429 2430 uint8_t hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2431 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2432 if (!hfp_connection){ 2433 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2434 } 2435 2436 uint8_t status = hfp_ag_setup_audio_connection(hfp_connection); 2437 if (status != ERROR_CODE_SUCCESS){ 2438 return status; 2439 } 2440 hfp_ag_run_for_context(hfp_connection); 2441 return ERROR_CODE_SUCCESS; 2442 } 2443 2444 uint8_t hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2445 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2446 if (!hfp_connection){ 2447 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2448 } 2449 2450 hfp_trigger_release_audio_connection(hfp_connection); 2451 hfp_ag_run_for_context(hfp_connection); 2452 return ERROR_CODE_SUCCESS; 2453 } 2454 2455 /** 2456 * @brief Enable in-band ring tone 2457 */ 2458 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2459 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2460 return; 2461 } 2462 2463 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2464 2465 btstack_linked_list_iterator_t it; 2466 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2467 while (btstack_linked_list_iterator_has_next(&it)){ 2468 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2469 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2470 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2471 hfp_ag_run_for_context(hfp_connection); 2472 } 2473 } 2474 2475 /** 2476 * @brief Called from GSM 2477 */ 2478 void hfp_ag_incoming_call(void){ 2479 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2480 } 2481 2482 void hfp_ag_outgoing_call_initiated(const char * number) { 2483 UNUSED(number); 2484 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, NULL); 2485 } 2486 2487 /** 2488 * @brief number is stored. 2489 */ 2490 void hfp_ag_set_clip(uint8_t type, const char * number){ 2491 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2492 } 2493 2494 void hfp_ag_call_dropped(void){ 2495 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2496 } 2497 2498 // call from AG UI 2499 void hfp_ag_answer_incoming_call(void){ 2500 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2501 } 2502 2503 void hfp_ag_join_held_call(void){ 2504 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2505 } 2506 2507 void hfp_ag_terminate_call(void){ 2508 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2509 } 2510 2511 void hfp_ag_outgoing_call_ringing(void){ 2512 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2513 } 2514 2515 void hfp_ag_outgoing_call_established(void){ 2516 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2517 } 2518 2519 void hfp_ag_outgoing_call_rejected(void){ 2520 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2521 } 2522 2523 void hfp_ag_outgoing_call_accepted(void){ 2524 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2525 } 2526 2527 void hfp_ag_hold_incoming_call(void){ 2528 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2529 } 2530 2531 void hfp_ag_accept_held_incoming_call(void) { 2532 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2533 } 2534 2535 void hfp_ag_reject_held_incoming_call(void){ 2536 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2537 } 2538 2539 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2540 int indicator_index = get_ag_indicator_index_for_name(name); 2541 if (indicator_index < 0) return; 2542 hfp_ag_indicators[indicator_index].status = value; 2543 2544 btstack_linked_list_iterator_t it; 2545 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2546 while (btstack_linked_list_iterator_has_next(&it)){ 2547 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2548 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2549 if (!hfp_connection->ag_indicators[indicator_index].enabled) { 2550 log_info("Requested AG indicator '%s' update to %u, but it is not enabled", hfp_ag_indicators[indicator_index].name, value); 2551 continue; 2552 } 2553 log_info("AG indicator '%s' changed to %u, request transfer status", hfp_ag_indicators[indicator_index].name, value); 2554 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2555 hfp_ag_run_for_context(hfp_connection); 2556 } 2557 } 2558 2559 uint8_t hfp_ag_set_registration_status(int registration_status){ 2560 if ((registration_status < 0) || (registration_status > 1)){ 2561 return ERROR_CODE_COMMAND_DISALLOWED; 2562 } 2563 2564 if ( (registration_status == 0) && (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 2565 2566 // if network goes away wihle a call is active: 2567 // - the call gets dropped 2568 // - we send NO CARRIER 2569 // NOTE: the CALL=0 has to be sent before NO CARRIER 2570 2571 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2572 2573 btstack_linked_list_iterator_t it; 2574 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2575 while (btstack_linked_list_iterator_has_next(&it)){ 2576 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2577 hfp_connection->ag_send_no_carrier = true; 2578 } 2579 } 2580 hfp_ag_set_ag_indicator("service", registration_status); 2581 return ERROR_CODE_SUCCESS; 2582 } 2583 2584 uint8_t hfp_ag_set_signal_strength(int signal_strength){ 2585 if ((signal_strength < 0) || (signal_strength > 5)){ 2586 return ERROR_CODE_COMMAND_DISALLOWED; 2587 } 2588 2589 hfp_ag_set_ag_indicator("signal", signal_strength); 2590 return ERROR_CODE_SUCCESS; 2591 } 2592 2593 uint8_t hfp_ag_set_roaming_status(int roaming_status){ 2594 if ((roaming_status < 0) || (roaming_status > 1)){ 2595 return ERROR_CODE_COMMAND_DISALLOWED; 2596 } 2597 2598 hfp_ag_set_ag_indicator("roam", roaming_status); 2599 return ERROR_CODE_SUCCESS; 2600 } 2601 2602 uint8_t hfp_ag_set_battery_level(int battery_level){ 2603 if ((battery_level < 0) || (battery_level > 5)){ 2604 return ERROR_CODE_COMMAND_DISALLOWED; 2605 } 2606 hfp_ag_set_ag_indicator("battchg", battery_level); 2607 return ERROR_CODE_SUCCESS; 2608 } 2609 2610 uint8_t hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle){ 2611 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2612 if (!hfp_connection){ 2613 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2614 } 2615 uint8_t status = hfp_ag_activate_voice_recognition_for_connection(hfp_connection); 2616 if (status == ERROR_CODE_SUCCESS){ 2617 hfp_ag_run_for_context(hfp_connection); 2618 } 2619 return status; 2620 } 2621 2622 uint8_t hfp_ag_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2623 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2624 if (!hfp_connection){ 2625 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2626 } 2627 uint8_t status = hfp_ag_deactivate_voice_recognition_for_connection(hfp_connection); 2628 if (status == ERROR_CODE_SUCCESS){ 2629 hfp_ag_run_for_context(hfp_connection); 2630 } 2631 return status; 2632 } 2633 2634 2635 uint8_t hfp_ag_enhanced_voice_recognition_activate(hci_con_handle_t acl_handle){ 2636 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2637 return ERROR_CODE_COMMAND_DISALLOWED; 2638 } 2639 2640 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2641 if (!hfp_connection){ 2642 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2643 } 2644 2645 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2646 return ERROR_CODE_COMMAND_DISALLOWED; 2647 } 2648 2649 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2650 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2651 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 2652 hfp_ag_run_for_context(hfp_connection); 2653 return ERROR_CODE_SUCCESS; 2654 } 2655 2656 uint8_t hfp_ag_enhanced_voice_recognition_deactivate(hci_con_handle_t acl_handle){ 2657 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2658 return ERROR_CODE_COMMAND_DISALLOWED; 2659 } 2660 2661 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2662 if (!hfp_connection){ 2663 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2664 } 2665 2666 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2667 return ERROR_CODE_COMMAND_DISALLOWED; 2668 } 2669 2670 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2671 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2672 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_OFF; 2673 hfp_ag_run_for_context(hfp_connection); 2674 return ERROR_CODE_SUCCESS; 2675 } 2676 2677 uint8_t hfp_ag_enhanced_voice_recognition_state(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state){ 2678 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2679 return ERROR_CODE_COMMAND_DISALLOWED; 2680 } 2681 2682 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2683 if (!hfp_connection){ 2684 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2685 } 2686 2687 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2688 return ERROR_CODE_COMMAND_DISALLOWED; 2689 } 2690 2691 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2692 hfp_connection->ag_vra_state = state; 2693 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_STATUS; 2694 hfp_ag_run_for_context(hfp_connection); 2695 return ERROR_CODE_SUCCESS; 2696 } 2697 2698 uint8_t hfp_ag_enhanced_voice_recognition_starting_sound(hci_con_handle_t acl_handle){ 2699 return hfp_ag_enhanced_voice_recognition_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_SENDING_AUDIO_TO_HF); 2700 } 2701 uint8_t hfp_ag_enhanced_voice_recognition_ready_for_input(hci_con_handle_t acl_handle){ 2702 return hfp_ag_enhanced_voice_recognition_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_READY_TO_ACCEPT_AUDIO_INPUT); 2703 } 2704 uint8_t hfp_ag_enhanced_voice_recognition_processing_input(hci_con_handle_t acl_handle){ 2705 return hfp_ag_enhanced_voice_recognition_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_PROCESSING_AUDIO_INPUT); 2706 } 2707 2708 uint8_t hfp_ag_enhanced_voice_recognition_message(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state, hfp_voice_recognition_message_t msg){ 2709 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2710 return ERROR_CODE_COMMAND_DISALLOWED; 2711 } 2712 2713 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2714 if (!hfp_connection){ 2715 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2716 } 2717 2718 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2719 return ERROR_CODE_COMMAND_DISALLOWED; 2720 } 2721 2722 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2723 hfp_connection->ag_vra_state = state; 2724 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_MSG; 2725 hfp_connection->ag_msg = msg; 2726 hfp_ag_run_for_context(hfp_connection); 2727 return ERROR_CODE_SUCCESS; 2728 } 2729 2730 uint8_t hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2731 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2732 if (!hfp_connection){ 2733 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2734 } 2735 2736 if ((gain < 0) || (gain > 15)){ 2737 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2738 return ERROR_CODE_COMMAND_DISALLOWED; 2739 } 2740 2741 if (hfp_connection->microphone_gain != gain){ 2742 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2743 hfp_connection->microphone_gain = gain; 2744 hfp_connection->send_microphone_gain = 1; 2745 } 2746 hfp_ag_run_for_context(hfp_connection); 2747 return ERROR_CODE_SUCCESS; 2748 } 2749 2750 uint8_t hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2751 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2752 if (!hfp_connection){ 2753 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2754 } 2755 2756 if ((gain < 0) || (gain > 15)){ 2757 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2758 return ERROR_CODE_COMMAND_DISALLOWED; 2759 } 2760 2761 if (hfp_connection->speaker_gain != gain){ 2762 hfp_connection->speaker_gain = gain; 2763 hfp_connection->send_speaker_gain = 1; 2764 } 2765 hfp_ag_run_for_context(hfp_connection); 2766 return ERROR_CODE_SUCCESS; 2767 } 2768 2769 uint8_t hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2770 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2771 if (!hfp_connection){ 2772 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2773 } 2774 2775 hfp_ag_set_clip(0, number); 2776 hfp_connection->send_phone_number_for_voice_tag = 1; 2777 return ERROR_CODE_SUCCESS; 2778 } 2779 2780 uint8_t hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2781 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2782 if (!hfp_connection){ 2783 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2784 } 2785 2786 hfp_connection->send_error = 1; 2787 return ERROR_CODE_SUCCESS; 2788 } 2789 2790 uint8_t hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2791 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2792 if (!hfp_connection){ 2793 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2794 } 2795 2796 hfp_connection->ok_pending = 1; 2797 return ERROR_CODE_SUCCESS; 2798 } 2799 2800 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2801 subscriber_numbers = numbers; 2802 subscriber_numbers_count = numbers_count; 2803 } 2804 2805 void hfp_ag_clear_last_dialed_number(void){ 2806 hfp_gsm_clear_last_dialed_number(); 2807 } 2808 2809 void hfp_ag_set_last_dialed_number(const char * number){ 2810 hfp_gsm_set_last_dialed_number(number); 2811 } 2812 2813 uint8_t hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2814 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2815 if (!hfp_connection){ 2816 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2817 } 2818 2819 if (!hfp_connection->call_waiting_notification_enabled){ 2820 return ERROR_CODE_COMMAND_DISALLOWED; 2821 } 2822 2823 hfp_connection->ag_notify_incoming_call_waiting = 1; 2824 hfp_ag_run_for_context(hfp_connection); 2825 return ERROR_CODE_SUCCESS; 2826 } 2827 2828 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){ 2829 if (!name){ 2830 name = default_hfp_ag_service_name; 2831 } 2832 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2833 2834 /* 2835 * 0x01 – Ability to reject a call 2836 * 0x00 – No ability to reject a call 2837 */ 2838 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2839 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2840 2841 // Construct SupportedFeatures for SDP bitmap: 2842 // 2843 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2844 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2845 // 2846 // Wide band speech (bit 5) requires Codec negotiation 2847 // 2848 uint16_t sdp_features = supported_features & 0x1f; 2849 if ( (wide_band_speech == 1) && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2850 sdp_features |= 1 << 5; 2851 } 2852 2853 if (supported_features & (1 << HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2854 sdp_features |= 1 << 6; 2855 } 2856 2857 if (supported_features & (1 << HFP_AGSF_VOICE_RECOGNITION_TEXT)){ 2858 sdp_features |= 1 << 7; 2859 } 2860 2861 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2862 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2863 } 2864 2865 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2866 btstack_assert(callback != NULL); 2867 2868 hfp_ag_callback = callback; 2869 hfp_set_ag_callback(callback); 2870 } 2871