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 int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 750 int sent = codecs_exchange_state_machine(hfp_connection); 751 if (sent) return 1; 752 753 switch(hfp_connection->command){ 754 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 755 hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 756 if (hfp_connection->ag_activate_voice_recognition > 0){ 757 hfp_ag_setup_audio_connection(hfp_connection); 758 } else { 759 hfp_trigger_release_audio_connection(hfp_connection); 760 } 761 return 1; 762 763 case HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION: 764 switch (hfp_connection->ag_vra_status){ 765 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_ACTIVATED: 766 hfp_connection->ag_vra_status = HFP_VRA_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 767 hfp_ag_send_enhanced_voice_recognition_cmd(hfp_connection->rfcomm_cid, 1, hfp_connection->ag_vra_state); 768 hfp_ag_setup_audio_connection(hfp_connection); 769 break; 770 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_STATUS: 771 hfp_connection->ag_vra_status = HFP_VRA_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 772 hfp_ag_send_enhanced_voice_recognition_cmd(hfp_connection->rfcomm_cid, 1, hfp_connection->ag_vra_state); 773 break; 774 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_OFF: 775 hfp_connection->ag_vra_status = HFP_VRA_VOICE_RECOGNITION_OFF; 776 hfp_ag_send_enhanced_voice_recognition_cmd(hfp_connection->rfcomm_cid, 0, hfp_connection->ag_vra_state); 777 hfp_trigger_release_audio_connection(hfp_connection); 778 break; 779 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_MSG: 780 hfp_connection->ag_vra_status = HFP_VRA_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 781 hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection); 782 break; 783 default: 784 return 0; 785 } 786 return 1; 787 788 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 789 790 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 791 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 792 } else { 793 switch (hfp_connection->ag_vra_status){ 794 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_ACTIVATED: 795 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 796 break; 797 default: 798 hfp_ag_send_error(hfp_connection->rfcomm_cid); 799 break; 800 } 801 } 802 return 1; 803 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 804 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 805 return 1; 806 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 807 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 808 return 1; 809 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 810 if (hfp_connection->network_operator.format != 0){ 811 hfp_ag_send_error(hfp_connection->rfcomm_cid); 812 } else { 813 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 814 } 815 return 1; 816 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 817 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 818 return 1; 819 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 820 if (hfp_connection->extended_audio_gateway_error){ 821 hfp_connection->extended_audio_gateway_error = 0; 822 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 823 return 1; 824 } 825 break; 826 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 827 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 828 return 1; 829 default: 830 break; 831 } 832 return 0; 833 } 834 835 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 836 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 837 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 838 839 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 840 841 // accept incoming audio connection (codec negotiation is not used) 842 if (hfp_connection->accept_sco){ 843 // notify about codec selection if not done already 844 if (hfp_connection->negotiated_codec == 0){ 845 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 846 } 847 // 848 bool incoming_eSCO = hfp_connection->accept_sco == 2; 849 hfp_connection->accept_sco = 0; 850 hfp_connection->state = HFP_W4_SCO_CONNECTED; 851 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 852 return 1; 853 } 854 855 // run codecs exchange 856 int sent = codecs_exchange_state_machine(hfp_connection); 857 if (sent) return 1; 858 859 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 860 if (hfp_connection->establish_audio_connection){ 861 hfp_connection->state = HFP_W4_SCO_CONNECTED; 862 hfp_connection->establish_audio_connection = 0; 863 hfp_setup_synchronous_connection(hfp_connection); 864 return 1; 865 } 866 return 0; 867 } 868 869 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 870 btstack_linked_list_iterator_t it; 871 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 872 873 while (btstack_linked_list_iterator_has_next(&it)){ 874 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 875 if ( & hfp_connection->hfp_timeout == ts) { 876 return hfp_connection; 877 } 878 } 879 return NULL; 880 } 881 882 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 883 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 884 if (!hfp_connection) return; 885 886 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 887 hfp_connection->ag_ring = 1; 888 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 889 890 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 891 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 892 893 hfp_ag_run_for_context(hfp_connection); 894 } 895 896 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 897 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 898 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 899 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 900 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 901 } 902 903 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 904 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 905 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 906 } 907 908 static void hfp_ag_set_callsetup_indicator(void){ 909 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 910 if (!indicator){ 911 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 912 return; 913 }; 914 indicator->status = hfp_gsm_callsetup_status(); 915 } 916 917 static void hfp_ag_set_callheld_indicator(void){ 918 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 919 if (!indicator){ 920 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 921 return; 922 }; 923 indicator->status = hfp_gsm_callheld_status(); 924 } 925 926 // 927 // transitition implementations for hfp_ag_call_state_machine 928 // 929 930 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 931 if (use_in_band_tone()){ 932 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 933 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 934 } else { 935 hfp_timeout_start(hfp_connection); 936 hfp_connection->ag_ring = 1; 937 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 938 hfp_connection->call_state = HFP_CALL_RINGING; 939 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 940 } 941 } 942 943 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 944 hfp_connection->ag_ring = 0; 945 hfp_connection->ag_send_clip = 0; 946 hfp_timeout_stop(hfp_connection); 947 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 948 } 949 950 static void hfp_ag_trigger_incoming_call(void){ 951 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 952 if (indicator_index < 0) return; 953 954 btstack_linked_list_iterator_t it; 955 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 956 while (btstack_linked_list_iterator_has_next(&it)){ 957 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 958 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 959 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 960 if (hfp_connection->call_state == HFP_CALL_IDLE){ 961 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 962 hfp_ag_hf_start_ringing(hfp_connection); 963 } 964 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 965 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 966 } 967 hfp_ag_run_for_context(hfp_connection); 968 } 969 } 970 971 static void hfp_ag_trigger_outgoing_call(void){ 972 btstack_linked_list_iterator_t it; 973 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 974 while (btstack_linked_list_iterator_has_next(&it)){ 975 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 976 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 977 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 978 if (hfp_connection->call_state == HFP_CALL_IDLE){ 979 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 980 } 981 } 982 } 983 984 static void hfp_ag_handle_outgoing_call_accepted(hfp_connection_t * hfp_connection){ 985 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 986 987 // trigger callsetup to be 988 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 989 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 990 991 int indicator_index ; 992 993 hfp_ag_set_callsetup_indicator(); 994 indicator_index = get_ag_indicator_index_for_name("callsetup"); 995 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 996 997 // put current call on hold if active 998 if (put_call_on_hold){ 999 log_info("AG putting current call on hold for new outgoing call"); 1000 hfp_ag_set_callheld_indicator(); 1001 indicator_index = get_ag_indicator_index_for_name("callheld"); 1002 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1003 } 1004 1005 // start audio if needed 1006 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1007 } 1008 1009 static void hfp_ag_transfer_indicator(const char * name){ 1010 int indicator_index = get_ag_indicator_index_for_name(name); 1011 if (indicator_index < 0) return; 1012 1013 btstack_linked_list_iterator_t it; 1014 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1015 while (btstack_linked_list_iterator_has_next(&it)){ 1016 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1017 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1018 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1019 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1020 hfp_ag_run_for_context(hfp_connection); 1021 } 1022 } 1023 1024 static void hfp_ag_transfer_callsetup_state(void){ 1025 hfp_ag_transfer_indicator("callsetup"); 1026 } 1027 1028 static void hfp_ag_transfer_call_state(void){ 1029 hfp_ag_transfer_indicator("call"); 1030 } 1031 1032 static void hfp_ag_transfer_callheld_state(void){ 1033 hfp_ag_transfer_indicator("callheld"); 1034 } 1035 1036 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 1037 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1038 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1039 1040 btstack_linked_list_iterator_t it; 1041 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1042 while (btstack_linked_list_iterator_has_next(&it)){ 1043 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1044 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1045 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1046 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1047 1048 hfp_ag_hf_stop_ringing(hfp_connection); 1049 if (hfp_connection == source){ 1050 1051 if (use_in_band_tone()){ 1052 hfp_connection->call_state = HFP_CALL_ACTIVE; 1053 } else { 1054 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 1055 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1056 } 1057 1058 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1059 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1060 1061 } else { 1062 hfp_connection->call_state = HFP_CALL_IDLE; 1063 } 1064 hfp_ag_run_for_context(hfp_connection); 1065 } 1066 } 1067 1068 static void hfp_ag_ag_accept_call(void){ 1069 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1070 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1071 1072 btstack_linked_list_iterator_t it; 1073 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1074 while (btstack_linked_list_iterator_has_next(&it)){ 1075 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1076 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1077 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 1078 1079 hfp_ag_hf_stop_ringing(hfp_connection); 1080 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1081 1082 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1083 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1084 1085 hfp_ag_run_for_context(hfp_connection); 1086 break; // only single 1087 } 1088 } 1089 1090 static void hfp_ag_trigger_reject_call(void){ 1091 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1092 btstack_linked_list_iterator_t it; 1093 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1094 while (btstack_linked_list_iterator_has_next(&it)){ 1095 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1096 if (connection->local_role != HFP_ROLE_AG) continue; 1097 if ((connection->call_state != HFP_CALL_RINGING) && 1098 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1099 hfp_ag_hf_stop_ringing(connection); 1100 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1101 connection->call_state = HFP_CALL_IDLE; 1102 hfp_ag_run_for_context(connection); 1103 } 1104 } 1105 1106 static void hfp_ag_trigger_terminate_call(void){ 1107 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1108 1109 btstack_linked_list_iterator_t it; 1110 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1111 while (btstack_linked_list_iterator_has_next(&it)){ 1112 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1113 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1114 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1115 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1116 hfp_connection->call_state = HFP_CALL_IDLE; 1117 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1118 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1119 hfp_connection->release_audio_connection = 1; 1120 } 1121 hfp_ag_run_for_context(hfp_connection); 1122 } 1123 hfp_emit_simple_event(NULL, HFP_SUBEVENT_CALL_TERMINATED); 1124 } 1125 1126 static void hfp_ag_set_call_indicator(void){ 1127 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1128 if (!indicator){ 1129 log_error("hfp_ag_set_call_state: call indicator is missing"); 1130 return; 1131 }; 1132 indicator->status = hfp_gsm_call_status(); 1133 } 1134 1135 static void hfp_ag_stop_ringing(void){ 1136 btstack_linked_list_iterator_t it; 1137 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1138 while (btstack_linked_list_iterator_has_next(&it)){ 1139 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1140 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1141 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1142 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1143 hfp_ag_hf_stop_ringing(hfp_connection); 1144 } 1145 } 1146 1147 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1148 btstack_linked_list_iterator_t it; 1149 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1150 while (btstack_linked_list_iterator_has_next(&it)){ 1151 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1152 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1153 if (hfp_connection->call_state == call_state) return hfp_connection; 1154 } 1155 return NULL; 1156 } 1157 1158 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1159 btstack_linked_list_iterator_t it; 1160 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1161 while (btstack_linked_list_iterator_has_next(&it)){ 1162 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1163 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1164 hfp_connection->send_response_and_hold_status = state + 1; 1165 } 1166 } 1167 1168 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1169 int indicator_index; 1170 switch (hfp_connection->call_state){ 1171 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1172 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1173 // we got event: audio hfp_connection established 1174 hfp_timeout_start(hfp_connection); 1175 hfp_connection->ag_ring = 1; 1176 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1177 hfp_connection->call_state = HFP_CALL_RINGING; 1178 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1179 break; 1180 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1181 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1182 // we got event: audio hfp_connection established 1183 hfp_connection->call_state = HFP_CALL_ACTIVE; 1184 break; 1185 case HFP_CALL_W2_SEND_CALL_WAITING: 1186 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1187 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1188 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1189 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1190 break; 1191 default: 1192 break; 1193 } 1194 return 0; 1195 } 1196 1197 // functions extracted from hfp_ag_call_sm below 1198 static void hfp_ag_handle_reject_outgoing_call(void){ 1199 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1200 if (!hfp_connection){ 1201 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1202 return; 1203 } 1204 1205 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1206 hfp_connection->call_state = HFP_CALL_IDLE; 1207 hfp_connection->send_error = 1; 1208 hfp_ag_run_for_context(hfp_connection); 1209 } 1210 1211 // hfp_connection is used to identify originating HF 1212 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1213 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1214 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1215 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1216 1217 switch (event){ 1218 case HFP_AG_INCOMING_CALL: 1219 switch (hfp_gsm_call_status()){ 1220 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1221 switch (hfp_gsm_callsetup_status()){ 1222 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1223 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1224 hfp_ag_set_callsetup_indicator(); 1225 hfp_ag_trigger_incoming_call(); 1226 log_info("AG rings"); 1227 break; 1228 default: 1229 break; 1230 } 1231 break; 1232 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1233 switch (hfp_gsm_callsetup_status()){ 1234 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1235 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1236 hfp_ag_set_callsetup_indicator(); 1237 hfp_ag_trigger_incoming_call(); 1238 log_info("AG call waiting"); 1239 break; 1240 default: 1241 break; 1242 } 1243 break; 1244 default: 1245 break; 1246 } 1247 break; 1248 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1249 switch (hfp_gsm_call_status()){ 1250 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1251 switch (hfp_gsm_callsetup_status()){ 1252 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1253 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1254 hfp_ag_set_call_indicator(); 1255 hfp_ag_set_callsetup_indicator(); 1256 hfp_ag_ag_accept_call(); 1257 log_info("AG answers call, accept call by GSM"); 1258 break; 1259 default: 1260 break; 1261 } 1262 break; 1263 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1264 switch (hfp_gsm_callsetup_status()){ 1265 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1266 log_info("AG: current call is placed on hold, incoming call gets active"); 1267 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1268 hfp_ag_set_callsetup_indicator(); 1269 hfp_ag_set_callheld_indicator(); 1270 hfp_ag_transfer_callsetup_state(); 1271 hfp_ag_transfer_callheld_state(); 1272 break; 1273 default: 1274 break; 1275 } 1276 break; 1277 default: 1278 break; 1279 } 1280 break; 1281 1282 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1283 switch (hfp_gsm_call_status()){ 1284 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1285 switch (hfp_gsm_callheld_status()){ 1286 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1287 log_info("AG: joining held call with active call"); 1288 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1289 hfp_ag_set_callheld_indicator(); 1290 hfp_ag_transfer_callheld_state(); 1291 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1292 break; 1293 default: 1294 break; 1295 } 1296 break; 1297 default: 1298 break; 1299 } 1300 break; 1301 1302 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1303 switch (hfp_gsm_call_status()){ 1304 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1305 switch (hfp_gsm_callsetup_status()){ 1306 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1307 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1308 hfp_ag_set_callsetup_indicator(); 1309 hfp_ag_set_call_indicator(); 1310 hfp_ag_hf_accept_call(hfp_connection); 1311 hfp_connection->ok_pending = 1; 1312 log_info("HF answers call, accept call by GSM"); 1313 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1314 break; 1315 default: 1316 break; 1317 } 1318 break; 1319 default: 1320 break; 1321 } 1322 break; 1323 1324 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1325 switch (hfp_gsm_call_status()){ 1326 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1327 switch (hfp_gsm_callsetup_status()){ 1328 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1329 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1330 hfp_ag_response_and_hold_active = 1; 1331 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1332 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1333 // as with regualr call 1334 hfp_ag_set_call_indicator(); 1335 hfp_ag_set_callsetup_indicator(); 1336 hfp_ag_ag_accept_call(); 1337 log_info("AG response and hold - hold by AG"); 1338 break; 1339 default: 1340 break; 1341 } 1342 break; 1343 default: 1344 break; 1345 } 1346 break; 1347 1348 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1349 switch (hfp_gsm_call_status()){ 1350 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1351 switch (hfp_gsm_callsetup_status()){ 1352 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1353 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1354 hfp_ag_response_and_hold_active = 1; 1355 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1356 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1357 // as with regualr call 1358 hfp_ag_set_call_indicator(); 1359 hfp_ag_set_callsetup_indicator(); 1360 hfp_ag_hf_accept_call(hfp_connection); 1361 log_info("AG response and hold - hold by HF"); 1362 break; 1363 default: 1364 break; 1365 } 1366 break; 1367 default: 1368 break; 1369 } 1370 break; 1371 1372 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1373 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1374 if (!hfp_ag_response_and_hold_active) break; 1375 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1376 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1377 hfp_ag_response_and_hold_active = 0; 1378 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1379 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1380 log_info("Held Call accepted and active"); 1381 break; 1382 1383 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1384 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1385 if (!hfp_ag_response_and_hold_active) break; 1386 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1387 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1388 hfp_ag_response_and_hold_active = 0; 1389 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1390 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1391 // from terminate by ag 1392 hfp_ag_set_call_indicator(); 1393 hfp_ag_trigger_terminate_call(); 1394 break; 1395 1396 case HFP_AG_TERMINATE_CALL_BY_HF: 1397 switch (hfp_gsm_call_status()){ 1398 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1399 switch (hfp_gsm_callsetup_status()){ 1400 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1401 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1402 hfp_ag_set_callsetup_indicator(); 1403 hfp_ag_transfer_callsetup_state(); 1404 hfp_ag_trigger_reject_call(); 1405 log_info("HF Rejected Incoming call, AG terminate call"); 1406 break; 1407 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1408 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1409 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1410 hfp_ag_set_callsetup_indicator(); 1411 hfp_ag_transfer_callsetup_state(); 1412 log_info("AG terminate outgoing call process"); 1413 break; 1414 default: 1415 break; 1416 } 1417 break; 1418 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1419 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1420 hfp_ag_set_callsetup_indicator(); 1421 hfp_ag_set_call_indicator(); 1422 hfp_ag_trigger_terminate_call(); 1423 log_info("AG terminate call"); 1424 break; 1425 default: 1426 break; 1427 } 1428 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1429 break; 1430 1431 case HFP_AG_TERMINATE_CALL_BY_AG: 1432 switch (hfp_gsm_call_status()){ 1433 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1434 switch (hfp_gsm_callsetup_status()){ 1435 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1436 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1437 hfp_ag_set_callsetup_indicator(); 1438 hfp_ag_trigger_reject_call(); 1439 log_info("AG Rejected Incoming call, AG terminate call"); 1440 break; 1441 default: 1442 break; 1443 } 1444 break; 1445 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1446 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1447 hfp_ag_set_callsetup_indicator(); 1448 hfp_ag_set_call_indicator(); 1449 hfp_ag_trigger_terminate_call(); 1450 log_info("AG terminate call"); 1451 break; 1452 default: 1453 break; 1454 } 1455 break; 1456 case HFP_AG_CALL_DROPPED: 1457 switch (hfp_gsm_call_status()){ 1458 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1459 switch (hfp_gsm_callsetup_status()){ 1460 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1461 hfp_ag_stop_ringing(); 1462 log_info("Incoming call interrupted"); 1463 break; 1464 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1465 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1466 log_info("Outgoing call interrupted\n"); 1467 log_info("AG notify call dropped\n"); 1468 break; 1469 default: 1470 break; 1471 } 1472 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1473 hfp_ag_set_callsetup_indicator(); 1474 hfp_ag_transfer_callsetup_state(); 1475 hfp_ag_trigger_terminate_call(); 1476 break; 1477 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1478 if (hfp_ag_response_and_hold_active) { 1479 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1480 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1481 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1482 } 1483 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1484 hfp_ag_set_callsetup_indicator(); 1485 hfp_ag_set_call_indicator(); 1486 hfp_ag_trigger_terminate_call(); 1487 log_info("AG notify call dropped"); 1488 break; 1489 default: 1490 break; 1491 } 1492 break; 1493 1494 case HFP_AG_OUTGOING_CALL_INITIATED_BY_HF: 1495 // directly reject call if number of free slots is exceeded 1496 if (!hfp_gsm_call_possible()){ 1497 hfp_connection->send_error = 1; 1498 hfp_ag_run_for_context(hfp_connection); 1499 break; 1500 } 1501 1502 // note: number not used currently 1503 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1504 1505 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1506 1507 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1508 break; 1509 1510 case HFP_AG_OUTGOING_CALL_INITIATED_BY_AG: 1511 // directly reject call if number of free slots is exceeded 1512 if (!hfp_gsm_call_possible()) { 1513 // TODO: no error for user 1514 break; 1515 } 1516 switch (hfp_gsm_call_status()) { 1517 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1518 switch (hfp_gsm_callsetup_status()) { 1519 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1520 // note: number not used currently 1521 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, 0, 0, "1234567"); 1522 // init call state for all connections 1523 hfp_ag_trigger_outgoing_call(); 1524 // get first one and accept call 1525 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1526 if (hfp_connection) { 1527 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1528 } 1529 break; 1530 default: 1531 // TODO: no error for user 1532 break; 1533 } 1534 break; 1535 default: 1536 // TODO: no error for user 1537 break; 1538 } 1539 break; 1540 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1541 // directly reject call if number of free slots is exceeded 1542 if (!hfp_gsm_call_possible()){ 1543 hfp_connection->send_error = 1; 1544 hfp_ag_run_for_context(hfp_connection); 1545 break; 1546 } 1547 1548 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1549 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1550 1551 log_info("Redial last number"); 1552 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1553 1554 if (strlen(last_dialed_number) > 0){ 1555 log_info("Last number exists: accept call"); 1556 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1557 } else { 1558 log_info("log_infoLast number missing: reject call"); 1559 hfp_ag_handle_reject_outgoing_call(); 1560 } 1561 break; 1562 } 1563 case HFP_AG_OUTGOING_CALL_REJECTED: 1564 hfp_ag_handle_reject_outgoing_call(); 1565 break; 1566 1567 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1568 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1569 if (!hfp_connection){ 1570 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1571 break; 1572 } 1573 1574 hfp_connection->ok_pending = 1; 1575 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1576 break; 1577 } 1578 case HFP_AG_OUTGOING_CALL_RINGING: 1579 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1580 if (!hfp_connection){ 1581 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1582 break; 1583 } 1584 1585 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1586 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1587 hfp_ag_set_callsetup_indicator(); 1588 hfp_ag_transfer_callsetup_state(); 1589 break; 1590 1591 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1592 // get outgoing call 1593 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1594 if (!hfp_connection){ 1595 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1596 } 1597 if (!hfp_connection){ 1598 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1599 break; 1600 } 1601 1602 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1603 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1604 hfp_connection->call_state = HFP_CALL_ACTIVE; 1605 hfp_ag_set_callsetup_indicator(); 1606 hfp_ag_set_call_indicator(); 1607 hfp_ag_transfer_call_state(); 1608 hfp_ag_transfer_callsetup_state(); 1609 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1610 hfp_ag_set_callheld_indicator(); 1611 hfp_ag_transfer_callheld_state(); 1612 } 1613 break; 1614 } 1615 1616 case HFP_AG_CALL_HOLD_USER_BUSY: 1617 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1618 hfp_ag_set_callsetup_indicator(); 1619 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1620 hfp_connection->call_state = HFP_CALL_ACTIVE; 1621 log_info("AG: Call Waiting, User Busy"); 1622 break; 1623 1624 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1625 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1626 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1627 1628 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1629 if (call_held || call_setup_in_progress){ 1630 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1631 0, NULL); 1632 1633 } 1634 1635 if (call_setup_in_progress){ 1636 log_info("AG: Call Dropped, Accept new call"); 1637 hfp_ag_set_callsetup_indicator(); 1638 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1639 } else { 1640 log_info("AG: Call Dropped, Resume held call"); 1641 } 1642 if (call_held){ 1643 hfp_ag_set_callheld_indicator(); 1644 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1645 } 1646 1647 hfp_connection->call_state = HFP_CALL_ACTIVE; 1648 break; 1649 } 1650 1651 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1652 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1653 // only update if callsetup changed 1654 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1655 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1656 NULL); 1657 1658 if (call_setup_in_progress){ 1659 log_info("AG: Call on Hold, Accept new call"); 1660 hfp_ag_set_callsetup_indicator(); 1661 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1662 } else { 1663 log_info("AG: Swap calls"); 1664 } 1665 1666 hfp_ag_set_callheld_indicator(); 1667 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1668 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1669 hfp_connection->call_state = HFP_CALL_ACTIVE; 1670 break; 1671 } 1672 1673 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1674 // Adds a held call to the conversation. 1675 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1676 log_info("AG: Join 3-way-call"); 1677 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1678 hfp_ag_set_callheld_indicator(); 1679 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1680 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1681 } 1682 hfp_connection->call_state = HFP_CALL_ACTIVE; 1683 break; 1684 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1685 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1686 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1687 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1688 hfp_ag_set_call_indicator(); 1689 hfp_ag_set_callheld_indicator(); 1690 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1691 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1692 hfp_connection->call_state = HFP_CALL_IDLE; 1693 break; 1694 1695 default: 1696 break; 1697 } 1698 1699 1700 } 1701 1702 1703 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1704 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1705 if (!active_call) return; 1706 1707 int idx = active_call->index; 1708 hfp_enhanced_call_dir_t dir = active_call->direction; 1709 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1710 hfp_enhanced_call_mode_t mode = active_call->mode; 1711 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1712 uint8_t type = active_call->clip_type; 1713 char * number = active_call->clip_number; 1714 1715 char buffer[100]; 1716 // TODO: check length of a buffer, to fit the MTU 1717 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1718 if (number){ 1719 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1720 } 1721 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1722 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, 1723 mode, mpty, type, number); 1724 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1725 } 1726 1727 1728 // sends pending command, returns if command was sent 1729 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1730 1731 if (hfp_connection->send_status_of_current_calls){ 1732 hfp_connection->ok_pending = 0; 1733 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1734 hfp_connection->next_call_index++; 1735 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1736 return 1; 1737 } else { 1738 // 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 1739 hfp_connection->next_call_index = 0; 1740 hfp_connection->ok_pending = 1; 1741 hfp_connection->send_status_of_current_calls = 0; 1742 } 1743 } 1744 1745 if (hfp_connection->ag_notify_incoming_call_waiting){ 1746 hfp_connection->ag_notify_incoming_call_waiting = 0; 1747 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1748 return 1; 1749 } 1750 1751 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1752 hfp_connection->ok_pending = 0; 1753 hfp_connection->send_error = 0; 1754 hfp_connection->command = HFP_CMD_NONE; 1755 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1756 return 1; 1757 } 1758 1759 if (hfp_connection->send_error){ 1760 hfp_connection->send_error = 0; 1761 hfp_connection->command = HFP_CMD_NONE; 1762 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1763 return 1; 1764 } 1765 1766 // note: before update AG indicators and ok_pending 1767 if (hfp_connection->send_response_and_hold_status){ 1768 int status = hfp_connection->send_response_and_hold_status - 1; 1769 hfp_connection->send_response_and_hold_status = 0; 1770 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1771 return 1; 1772 } 1773 1774 if (hfp_connection->ok_pending){ 1775 hfp_connection->ok_pending = 0; 1776 hfp_connection->command = HFP_CMD_NONE; 1777 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1778 return 1; 1779 } 1780 1781 // update AG indicators 1782 if (hfp_connection->ag_indicators_status_update_bitmap){ 1783 int i; 1784 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1785 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1786 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1787 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1788 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1789 break; 1790 } 1791 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1792 return 1; 1793 } 1794 } 1795 } 1796 1797 if (hfp_connection->ag_send_no_carrier){ 1798 hfp_connection->ag_send_no_carrier = false; 1799 hfp_ag_send_no_carrier(hfp_connection->rfcomm_cid); 1800 return 1; 1801 } 1802 1803 if (hfp_connection->ag_ring){ 1804 hfp_connection->ag_ring = 0; 1805 hfp_connection->command = HFP_CMD_NONE; 1806 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1807 return 1; 1808 } 1809 1810 if (hfp_connection->ag_send_clip){ 1811 hfp_connection->ag_send_clip = 0; 1812 hfp_connection->command = HFP_CMD_NONE; 1813 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1814 return 1; 1815 } 1816 1817 if (hfp_connection->send_phone_number_for_voice_tag){ 1818 hfp_connection->send_phone_number_for_voice_tag = 0; 1819 hfp_connection->command = HFP_CMD_NONE; 1820 hfp_connection->ok_pending = 1; 1821 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1822 return 1; 1823 } 1824 1825 if (hfp_connection->send_subscriber_number){ 1826 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1827 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1828 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1829 } else { 1830 hfp_connection->send_subscriber_number = 0; 1831 hfp_connection->next_subscriber_number_to_send = 0; 1832 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1833 } 1834 hfp_connection->command = HFP_CMD_NONE; 1835 return 1; 1836 } 1837 1838 if (hfp_connection->send_microphone_gain){ 1839 hfp_connection->send_microphone_gain = 0; 1840 hfp_connection->command = HFP_CMD_NONE; 1841 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1842 return 1; 1843 } 1844 1845 if (hfp_connection->send_speaker_gain){ 1846 hfp_connection->send_speaker_gain = 0; 1847 hfp_connection->command = HFP_CMD_NONE; 1848 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1849 return 1; 1850 } 1851 1852 if (hfp_connection->send_ag_status_indicators){ 1853 hfp_connection->send_ag_status_indicators = 0; 1854 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1855 return 1; 1856 } 1857 1858 return 0; 1859 } 1860 1861 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1862 1863 btstack_assert(hfp_connection != NULL); 1864 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1865 1866 // during SDP query, RFCOMM CID is not set 1867 if (hfp_connection->rfcomm_cid == 0) return; 1868 1869 // assert command could be sent 1870 if (hci_can_send_command_packet_now() == 0) return; 1871 1872 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 1873 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 1874 hfp_connection->release_audio_connection = 0; 1875 gap_disconnect(hfp_connection->sco_handle); 1876 return; 1877 } 1878 1879 #ifdef ENABLE_CC256X_ASSISTED_HFP 1880 // WBS Disassociate 1881 if (hfp_connection->cc256x_send_wbs_disassociate){ 1882 hfp_connection->cc256x_send_wbs_disassociate = false; 1883 hci_send_cmd(&hci_ti_wbs_disassociate); 1884 return; 1885 } 1886 // Write Codec Config 1887 if (hfp_connection->cc256x_send_write_codec_config){ 1888 hfp_connection->cc256x_send_write_codec_config = false; 1889 hfp_cc256x_write_codec_config(hfp_connection); 1890 return; 1891 } 1892 // WBS Associate 1893 if (hfp_connection->cc256x_send_wbs_associate){ 1894 hfp_connection->cc256x_send_wbs_associate = false; 1895 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 1896 return; 1897 } 1898 #endif 1899 #ifdef ENABLE_BCM_PCM_WBS 1900 // Enable WBS 1901 if (hfp_connection->bcm_send_enable_wbs){ 1902 hfp_connection->bcm_send_enable_wbs = false; 1903 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 1904 return; 1905 } 1906 // Write I2S/PCM params 1907 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 1908 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 1909 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 1910 return; 1911 } 1912 // Disable WBS 1913 if (hfp_connection->bcm_send_disable_wbs){ 1914 hfp_connection->bcm_send_disable_wbs = false; 1915 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 1916 return; 1917 } 1918 #endif 1919 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 1920 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 1921 hfp_finalize_connection_context(hfp_connection); 1922 return; 1923 } 1924 #endif 1925 1926 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1927 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1928 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1929 return; 1930 } 1931 1932 int cmd_sent = hfp_ag_send_commands(hfp_connection); 1933 1934 if (!cmd_sent){ 1935 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1936 } 1937 1938 if (!cmd_sent){ 1939 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1940 } 1941 1942 if (!cmd_sent){ 1943 cmd_sent = call_setup_state_machine(hfp_connection); 1944 } 1945 1946 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 1947 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 1948 switch (hfp_connection->codecs_state){ 1949 case HFP_CODECS_IDLE: 1950 case HFP_CODECS_RECEIVED_LIST: 1951 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1952 case HFP_CODECS_ERROR: 1953 hfp_connection->trigger_codec_exchange = 0; 1954 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1955 break; 1956 default: 1957 break; 1958 } 1959 } 1960 1961 if (!cmd_sent){ 1962 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1963 } 1964 1965 1966 // disconnect 1967 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 1968 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1969 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1970 } 1971 1972 if (cmd_sent){ 1973 hfp_connection->command = HFP_CMD_NONE; 1974 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1975 } 1976 } 1977 1978 static int hfp_parser_is_end_of_line(uint8_t byte){ 1979 return (byte == '\n') || (byte == '\r'); 1980 } 1981 1982 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1983 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1984 1985 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1986 if (size < 1) return; 1987 1988 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1989 if (!hfp_connection) return; 1990 1991 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 1992 #ifdef ENABLE_HFP_AT_MESSAGES 1993 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1994 #endif 1995 1996 // process messages byte-wise 1997 int pos; 1998 for (pos = 0; pos < size ; pos++){ 1999 hfp_parse(hfp_connection, packet[pos], 0); 2000 2001 // parse until end of line 2002 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 2003 2004 hfp_generic_status_indicator_t * indicator; 2005 switch(hfp_connection->command){ 2006 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 2007 if (hfp_connection->ag_activate_voice_recognition == 0){ 2008 hfp_trigger_release_audio_connection(hfp_connection); 2009 } 2010 break; 2011 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 2012 if (hfp_ag_response_and_hold_active){ 2013 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 2014 } 2015 hfp_connection->ok_pending = 1; 2016 break; 2017 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 2018 switch(hfp_connection->ag_response_and_hold_action){ 2019 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 2020 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 2021 break; 2022 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 2023 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 2024 break; 2025 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 2026 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 2027 break; 2028 default: 2029 break; 2030 } 2031 hfp_connection->ok_pending = 1; 2032 break; 2033 case HFP_CMD_HF_INDICATOR_STATUS: 2034 hfp_connection->command = HFP_CMD_NONE; 2035 if (hfp_connection->parser_indicator_index < hfp_generic_status_indicators_nr){ 2036 indicator = &hfp_generic_status_indicators[hfp_connection->parser_indicator_index]; 2037 } else { 2038 hfp_connection->send_error = 1; 2039 break; 2040 } 2041 switch (indicator->uuid){ 2042 case 1: // enhanced security 2043 if (hfp_connection->parser_indicator_value > 1) { 2044 hfp_connection->send_error = 1; 2045 return; 2046 } 2047 log_info("HF Indicator 'enhanced security' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2048 break; 2049 case 2: // battery level 2050 if (hfp_connection->parser_indicator_value > 100){ 2051 hfp_connection->send_error = 1; 2052 return; 2053 } 2054 log_info("HF Indicator 'battery' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2055 break; 2056 default: 2057 log_info("HF Indicator unknown set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2058 break; 2059 } 2060 hfp_connection->ok_pending = 1; 2061 break; 2062 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 2063 // expected by SLC state machine 2064 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 2065 hfp_connection->send_ag_indicators_segment = 0; 2066 hfp_connection->send_ag_status_indicators = 1; 2067 break; 2068 case HFP_CMD_LIST_CURRENT_CALLS: 2069 hfp_connection->command = HFP_CMD_NONE; 2070 hfp_connection->next_call_index = 0; 2071 hfp_connection->send_status_of_current_calls = 1; 2072 break; 2073 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 2074 if (subscriber_numbers_count == 0){ 2075 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2076 break; 2077 } 2078 hfp_connection->next_subscriber_number_to_send = 0; 2079 hfp_connection->send_subscriber_number = 1; 2080 break; 2081 case HFP_CMD_TRANSMIT_DTMF_CODES: 2082 { 2083 hfp_connection->command = HFP_CMD_NONE; 2084 char buffer[2]; 2085 buffer[0] = (char) hfp_connection->ag_dtmf_code; 2086 buffer[1] = 0; 2087 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 2088 break; 2089 } 2090 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 2091 hfp_connection->command = HFP_CMD_NONE; 2092 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 2093 break; 2094 case HFP_CMD_TURN_OFF_EC_AND_NR: 2095 hfp_connection->command = HFP_CMD_NONE; 2096 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 2097 hfp_connection->ok_pending = 1; 2098 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 2099 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 2100 } else { 2101 hfp_connection->send_error = 1; 2102 } 2103 break; 2104 case HFP_CMD_CALL_ANSWERED: 2105 hfp_connection->command = HFP_CMD_NONE; 2106 log_info("HFP: ATA"); 2107 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 2108 break; 2109 case HFP_CMD_HANG_UP_CALL: 2110 hfp_connection->command = HFP_CMD_NONE; 2111 hfp_connection->ok_pending = 1; 2112 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 2113 break; 2114 case HFP_CMD_CALL_HOLD: { 2115 hfp_connection->command = HFP_CMD_NONE; 2116 hfp_connection->ok_pending = 1; 2117 2118 switch (hfp_connection->ag_call_hold_action){ 2119 case 0: 2120 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2121 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2122 break; 2123 case 1: 2124 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2125 // Where both a held and a waiting call exist, the above procedures shall apply to the 2126 // waiting call (i.e., not to the held call) in conflicting situation. 2127 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2128 break; 2129 case 2: 2130 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2131 // Where both a held and a waiting call exist, the above procedures shall apply to the 2132 // waiting call (i.e., not to the held call) in conflicting situation. 2133 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2134 break; 2135 case 3: 2136 // Adds a held call to the conversation. 2137 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2138 break; 2139 case 4: 2140 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2141 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2142 break; 2143 default: 2144 break; 2145 } 2146 hfp_connection->call_index = 0; 2147 break; 2148 } 2149 case HFP_CMD_CALL_PHONE_NUMBER: 2150 hfp_connection->command = HFP_CMD_NONE; 2151 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, hfp_connection); 2152 break; 2153 case HFP_CMD_REDIAL_LAST_NUMBER: 2154 hfp_connection->command = HFP_CMD_NONE; 2155 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2156 break; 2157 case HFP_CMD_ENABLE_CLIP: 2158 hfp_connection->command = HFP_CMD_NONE; 2159 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2160 hfp_connection->ok_pending = 1; 2161 break; 2162 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2163 hfp_connection->command = HFP_CMD_NONE; 2164 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2165 hfp_connection->ok_pending = 1; 2166 break; 2167 case HFP_CMD_SET_SPEAKER_GAIN: 2168 hfp_connection->command = HFP_CMD_NONE; 2169 hfp_connection->ok_pending = 1; 2170 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2171 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2172 break; 2173 case HFP_CMD_SET_MICROPHONE_GAIN: 2174 hfp_connection->command = HFP_CMD_NONE; 2175 hfp_connection->ok_pending = 1; 2176 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2177 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2178 break; 2179 default: 2180 break; 2181 } 2182 } 2183 } 2184 2185 static void hfp_ag_run(void){ 2186 btstack_linked_list_iterator_t it; 2187 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2188 while (btstack_linked_list_iterator_has_next(&it)){ 2189 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2190 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2191 hfp_ag_run_for_context(hfp_connection); 2192 } 2193 } 2194 2195 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2196 switch (packet_type){ 2197 case RFCOMM_DATA_PACKET: 2198 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 2199 break; 2200 case HCI_EVENT_PACKET: 2201 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2202 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2203 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2204 return; 2205 } 2206 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2207 break; 2208 default: 2209 break; 2210 } 2211 2212 hfp_ag_run(); 2213 } 2214 2215 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2216 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2217 hfp_ag_run(); 2218 } 2219 2220 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2221 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2222 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2223 return; 2224 } 2225 int i; 2226 hfp_codecs_nr = codecs_nr; 2227 for (i=0; i < codecs_nr; i++){ 2228 hfp_codecs[i] = codecs[i]; 2229 } 2230 } 2231 2232 void hfp_ag_init_supported_features(uint32_t supported_features){ 2233 hfp_supported_features = supported_features; 2234 } 2235 2236 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2237 hfp_ag_indicators_nr = ag_indicators_nr; 2238 (void)memcpy(hfp_ag_indicators, ag_indicators, 2239 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2240 } 2241 2242 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2243 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2244 hfp_generic_status_indicators_nr = hf_indicators_nr; 2245 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2246 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2247 } 2248 2249 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2250 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2251 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2252 call_hold_services_nr * sizeof(char *)); 2253 } 2254 2255 2256 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2257 2258 hfp_init(); 2259 hfp_ag_call_hold_services_nr = 0; 2260 hfp_ag_response_and_hold_active = 0; 2261 hfp_ag_indicators_nr = 0; 2262 hfp_codecs_nr = 0; 2263 hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2264 subscriber_numbers = NULL; 2265 subscriber_numbers_count = 0; 2266 2267 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2268 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2269 2270 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2271 2272 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2273 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2274 2275 hfp_gsm_init(); 2276 } 2277 2278 void hfp_ag_deinit(void){ 2279 hfp_deinit(); 2280 hfp_gsm_deinit(); 2281 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2282 (void) memset(&hfp_ag_callback, 0, sizeof(btstack_packet_handler_t)); 2283 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2284 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2285 } 2286 2287 uint8_t hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2288 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2289 } 2290 2291 uint8_t hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2292 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2293 if (!hfp_connection){ 2294 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2295 } 2296 2297 hfp_trigger_release_service_level_connection(hfp_connection); 2298 hfp_ag_run_for_context(hfp_connection); 2299 return ERROR_CODE_SUCCESS; 2300 } 2301 2302 uint8_t hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2303 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2304 if (!hfp_connection){ 2305 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2306 } 2307 2308 hfp_connection->extended_audio_gateway_error = 0; 2309 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2310 return ERROR_CODE_COMMAND_DISALLOWED; 2311 } 2312 2313 hfp_connection->extended_audio_gateway_error = error; 2314 hfp_ag_run_for_context(hfp_connection); 2315 return ERROR_CODE_SUCCESS; 2316 } 2317 2318 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2319 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 2320 return ERROR_CODE_COMMAND_DISALLOWED; 2321 } 2322 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 2323 return ERROR_CODE_COMMAND_DISALLOWED; 2324 } 2325 2326 hfp_connection->establish_audio_connection = 1; 2327 if (!has_codec_negotiation_feature(hfp_connection)){ 2328 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2329 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2330 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2331 // now, pick link settings 2332 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2333 #ifdef ENABLE_CC256X_ASSISTED_HFP 2334 hfp_cc256x_prepare_for_sco(hfp_connection); 2335 #endif 2336 return ERROR_CODE_SUCCESS; 2337 } 2338 2339 uint8_t i; 2340 bool codec_was_in_use = false; 2341 bool better_codec_can_be_used = false; 2342 2343 for (i = 0; i<hfp_connection->remote_codecs_nr; i++){ 2344 if (hfp_connection->negotiated_codec == hfp_connection->remote_codecs[i]){ 2345 codec_was_in_use = true; 2346 } else if (hfp_connection->negotiated_codec < hfp_connection->remote_codecs[i]){ 2347 better_codec_can_be_used = true; 2348 } 2349 } 2350 2351 if (!codec_was_in_use || better_codec_can_be_used){ 2352 hfp_connection->trigger_codec_exchange = 1; 2353 hfp_connection->codecs_state = HFP_CODECS_IDLE; 2354 } 2355 return ERROR_CODE_SUCCESS; 2356 } 2357 2358 uint8_t hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2359 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2360 if (!hfp_connection){ 2361 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2362 } 2363 2364 uint8_t status = hfp_ag_setup_audio_connection(hfp_connection); 2365 if (status != ERROR_CODE_SUCCESS){ 2366 return status; 2367 } 2368 hfp_ag_run_for_context(hfp_connection); 2369 return ERROR_CODE_SUCCESS; 2370 } 2371 2372 uint8_t hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2373 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2374 if (!hfp_connection){ 2375 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2376 } 2377 2378 hfp_trigger_release_audio_connection(hfp_connection); 2379 hfp_ag_run_for_context(hfp_connection); 2380 return ERROR_CODE_SUCCESS; 2381 } 2382 2383 /** 2384 * @brief Enable in-band ring tone 2385 */ 2386 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2387 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2388 return; 2389 } 2390 2391 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2392 2393 btstack_linked_list_iterator_t it; 2394 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2395 while (btstack_linked_list_iterator_has_next(&it)){ 2396 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2397 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2398 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2399 hfp_ag_run_for_context(hfp_connection); 2400 } 2401 } 2402 2403 /** 2404 * @brief Called from GSM 2405 */ 2406 void hfp_ag_incoming_call(void){ 2407 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2408 } 2409 2410 void hfp_ag_outgoing_call_initiated(const char * number) { 2411 UNUSED(number); 2412 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, NULL); 2413 } 2414 2415 /** 2416 * @brief number is stored. 2417 */ 2418 void hfp_ag_set_clip(uint8_t type, const char * number){ 2419 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2420 } 2421 2422 void hfp_ag_call_dropped(void){ 2423 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2424 } 2425 2426 // call from AG UI 2427 void hfp_ag_answer_incoming_call(void){ 2428 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2429 } 2430 2431 void hfp_ag_join_held_call(void){ 2432 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2433 } 2434 2435 void hfp_ag_terminate_call(void){ 2436 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2437 } 2438 2439 void hfp_ag_outgoing_call_ringing(void){ 2440 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2441 } 2442 2443 void hfp_ag_outgoing_call_established(void){ 2444 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2445 } 2446 2447 void hfp_ag_outgoing_call_rejected(void){ 2448 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2449 } 2450 2451 void hfp_ag_outgoing_call_accepted(void){ 2452 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2453 } 2454 2455 void hfp_ag_hold_incoming_call(void){ 2456 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2457 } 2458 2459 void hfp_ag_accept_held_incoming_call(void) { 2460 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2461 } 2462 2463 void hfp_ag_reject_held_incoming_call(void){ 2464 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2465 } 2466 2467 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2468 int indicator_index = get_ag_indicator_index_for_name(name); 2469 if (indicator_index < 0) return; 2470 hfp_ag_indicators[indicator_index].status = value; 2471 2472 btstack_linked_list_iterator_t it; 2473 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2474 while (btstack_linked_list_iterator_has_next(&it)){ 2475 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2476 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2477 if (!hfp_connection->ag_indicators[indicator_index].enabled) { 2478 log_info("Requested AG indicator '%s' update to %u, but it is not enabled", hfp_ag_indicators[indicator_index].name, value); 2479 continue; 2480 } 2481 log_info("AG indicator '%s' changed to %u, request transfer status", hfp_ag_indicators[indicator_index].name, value); 2482 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2483 hfp_ag_run_for_context(hfp_connection); 2484 } 2485 } 2486 2487 uint8_t hfp_ag_set_registration_status(int registration_status){ 2488 if ((registration_status < 0) || (registration_status > 1)){ 2489 return ERROR_CODE_COMMAND_DISALLOWED; 2490 } 2491 2492 if ( (registration_status == 0) && (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 2493 2494 // if network goes away wihle a call is active: 2495 // - the call gets dropped 2496 // - we send NO CARRIER 2497 // NOTE: the CALL=0 has to be sent before NO CARRIER 2498 2499 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2500 2501 btstack_linked_list_iterator_t it; 2502 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2503 while (btstack_linked_list_iterator_has_next(&it)){ 2504 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2505 hfp_connection->ag_send_no_carrier = true; 2506 } 2507 } 2508 hfp_ag_set_ag_indicator("service", registration_status); 2509 return ERROR_CODE_SUCCESS; 2510 } 2511 2512 uint8_t hfp_ag_set_signal_strength(int signal_strength){ 2513 if ((signal_strength < 0) || (signal_strength > 5)){ 2514 return ERROR_CODE_COMMAND_DISALLOWED; 2515 } 2516 2517 hfp_ag_set_ag_indicator("signal", signal_strength); 2518 return ERROR_CODE_SUCCESS; 2519 } 2520 2521 uint8_t hfp_ag_set_roaming_status(int roaming_status){ 2522 if ((roaming_status < 0) || (roaming_status > 1)){ 2523 return ERROR_CODE_COMMAND_DISALLOWED; 2524 } 2525 2526 hfp_ag_set_ag_indicator("roam", roaming_status); 2527 return ERROR_CODE_SUCCESS; 2528 } 2529 2530 uint8_t hfp_ag_set_battery_level(int battery_level){ 2531 if ((battery_level < 0) || (battery_level > 5)){ 2532 return ERROR_CODE_COMMAND_DISALLOWED; 2533 } 2534 hfp_ag_set_ag_indicator("battchg", battery_level); 2535 return ERROR_CODE_SUCCESS; 2536 } 2537 2538 uint8_t hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2539 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2540 return ERROR_CODE_COMMAND_DISALLOWED; 2541 } 2542 2543 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2544 if (!hfp_connection){ 2545 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2546 } 2547 2548 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2549 return ERROR_CODE_COMMAND_DISALLOWED; 2550 } 2551 2552 hfp_connection->ag_activate_voice_recognition = activate; 2553 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2554 hfp_ag_run_for_context(hfp_connection); 2555 return ERROR_CODE_SUCCESS; 2556 } 2557 2558 uint8_t hfp_ag_enhanced_voice_recognition_activate(hci_con_handle_t acl_handle){ 2559 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2560 return ERROR_CODE_COMMAND_DISALLOWED; 2561 } 2562 2563 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2564 if (!hfp_connection){ 2565 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2566 } 2567 2568 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2569 return ERROR_CODE_COMMAND_DISALLOWED; 2570 } 2571 2572 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2573 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2574 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 2575 hfp_ag_run_for_context(hfp_connection); 2576 return ERROR_CODE_SUCCESS; 2577 } 2578 2579 uint8_t hfp_ag_enhanced_voice_recognition_deactivate(hci_con_handle_t acl_handle){ 2580 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2581 return ERROR_CODE_COMMAND_DISALLOWED; 2582 } 2583 2584 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2585 if (!hfp_connection){ 2586 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2587 } 2588 2589 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2590 return ERROR_CODE_COMMAND_DISALLOWED; 2591 } 2592 2593 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2594 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2595 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_OFF; 2596 hfp_ag_run_for_context(hfp_connection); 2597 return ERROR_CODE_SUCCESS; 2598 } 2599 2600 uint8_t hfp_ag_enhanced_voice_recognition_state(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state){ 2601 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2602 return ERROR_CODE_COMMAND_DISALLOWED; 2603 } 2604 2605 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2606 if (!hfp_connection){ 2607 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2608 } 2609 2610 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2611 return ERROR_CODE_COMMAND_DISALLOWED; 2612 } 2613 2614 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2615 hfp_connection->ag_vra_state = state; 2616 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_STATUS; 2617 hfp_ag_run_for_context(hfp_connection); 2618 return ERROR_CODE_SUCCESS; 2619 } 2620 2621 uint8_t hfp_ag_enhanced_voice_recognition_starting_sound(hci_con_handle_t acl_handle){ 2622 return hfp_ag_enhanced_voice_recognition_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_SENDING_AUDIO_TO_HF); 2623 } 2624 uint8_t hfp_ag_enhanced_voice_recognition_ready_for_input(hci_con_handle_t acl_handle){ 2625 return hfp_ag_enhanced_voice_recognition_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_READY_TO_ACCEPT_AUDIO_INPUT); 2626 } 2627 uint8_t hfp_ag_enhanced_voice_recognition_processing_input(hci_con_handle_t acl_handle){ 2628 return hfp_ag_enhanced_voice_recognition_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_PROCESSING_AUDIO_INPUT); 2629 } 2630 2631 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){ 2632 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2633 return ERROR_CODE_COMMAND_DISALLOWED; 2634 } 2635 2636 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2637 if (!hfp_connection){ 2638 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2639 } 2640 2641 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2642 return ERROR_CODE_COMMAND_DISALLOWED; 2643 } 2644 2645 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2646 hfp_connection->ag_vra_state = state; 2647 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_MSG; 2648 hfp_connection->ag_msg = msg; 2649 hfp_ag_run_for_context(hfp_connection); 2650 return ERROR_CODE_SUCCESS; 2651 } 2652 2653 uint8_t hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2654 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2655 if (!hfp_connection){ 2656 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2657 } 2658 2659 if ((gain < 0) || (gain > 15)){ 2660 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2661 return ERROR_CODE_COMMAND_DISALLOWED; 2662 } 2663 2664 if (hfp_connection->microphone_gain != gain){ 2665 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2666 hfp_connection->microphone_gain = gain; 2667 hfp_connection->send_microphone_gain = 1; 2668 } 2669 hfp_ag_run_for_context(hfp_connection); 2670 return ERROR_CODE_SUCCESS; 2671 } 2672 2673 uint8_t hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2674 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2675 if (!hfp_connection){ 2676 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2677 } 2678 2679 if ((gain < 0) || (gain > 15)){ 2680 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2681 return ERROR_CODE_COMMAND_DISALLOWED; 2682 } 2683 2684 if (hfp_connection->speaker_gain != gain){ 2685 hfp_connection->speaker_gain = gain; 2686 hfp_connection->send_speaker_gain = 1; 2687 } 2688 hfp_ag_run_for_context(hfp_connection); 2689 return ERROR_CODE_SUCCESS; 2690 } 2691 2692 uint8_t hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2693 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2694 if (!hfp_connection){ 2695 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2696 } 2697 2698 hfp_ag_set_clip(0, number); 2699 hfp_connection->send_phone_number_for_voice_tag = 1; 2700 return ERROR_CODE_SUCCESS; 2701 } 2702 2703 uint8_t hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2704 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2705 if (!hfp_connection){ 2706 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2707 } 2708 2709 hfp_connection->send_error = 1; 2710 return ERROR_CODE_SUCCESS; 2711 } 2712 2713 uint8_t hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2714 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2715 if (!hfp_connection){ 2716 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2717 } 2718 2719 hfp_connection->ok_pending = 1; 2720 return ERROR_CODE_SUCCESS; 2721 } 2722 2723 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2724 subscriber_numbers = numbers; 2725 subscriber_numbers_count = numbers_count; 2726 } 2727 2728 void hfp_ag_clear_last_dialed_number(void){ 2729 hfp_gsm_clear_last_dialed_number(); 2730 } 2731 2732 void hfp_ag_set_last_dialed_number(const char * number){ 2733 hfp_gsm_set_last_dialed_number(number); 2734 } 2735 2736 uint8_t hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2737 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2738 if (!hfp_connection){ 2739 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2740 } 2741 2742 if (!hfp_connection->call_waiting_notification_enabled){ 2743 return ERROR_CODE_COMMAND_DISALLOWED; 2744 } 2745 2746 hfp_connection->ag_notify_incoming_call_waiting = 1; 2747 hfp_ag_run_for_context(hfp_connection); 2748 return ERROR_CODE_SUCCESS; 2749 } 2750 2751 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){ 2752 if (!name){ 2753 name = default_hfp_ag_service_name; 2754 } 2755 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2756 2757 /* 2758 * 0x01 – Ability to reject a call 2759 * 0x00 – No ability to reject a call 2760 */ 2761 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2762 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2763 2764 // Construct SupportedFeatures for SDP bitmap: 2765 // 2766 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2767 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2768 // 2769 // Wide band speech (bit 5) requires Codec negotiation 2770 // 2771 uint16_t sdp_features = supported_features & 0x1f; 2772 if ( (wide_band_speech == 1) && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2773 sdp_features |= 1 << 5; 2774 } 2775 2776 if (supported_features & (1 << HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2777 sdp_features |= 1 << 6; 2778 } 2779 2780 if (supported_features & (1 << HFP_AGSF_VOICE_RECOGNITION_TEXT)){ 2781 sdp_features |= 1 << 7; 2782 } 2783 2784 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2785 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2786 } 2787 2788 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2789 btstack_assert(callback != NULL); 2790 2791 hfp_ag_callback = callback; 2792 hfp_set_ag_callback(callback); 2793 } 2794