1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hfp_ag.c" 39 40 // ***************************************************************************** 41 // 42 // HFP Audio Gateway (AG) unit 43 // 44 // ***************************************************************************** 45 46 #include "btstack_config.h" 47 48 #include <stdint.h> 49 #include <string.h> 50 51 #include "hci_cmd.h" 52 #include "btstack_run_loop.h" 53 54 #include "bluetooth_sdp.h" 55 #include "hci.h" 56 #include "btstack_memory.h" 57 #include "hci_dump.h" 58 #include "l2cap.h" 59 #include "btstack_debug.h" 60 #include "btstack_event.h" 61 #include "classic/core.h" 62 #include "classic/hfp.h" 63 #include "classic/hfp_ag.h" 64 #include "classic/hfp_gsm_model.h" 65 #include "classic/sdp_client_rfcomm.h" 66 #include "classic/sdp_server.h" 67 #include "classic/sdp_util.h" 68 69 // private prototypes 70 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection); 71 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection); 72 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 73 74 // public prototypes 75 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 76 int get_hfp_generic_status_indicators_nr(void); 77 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 78 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 79 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 80 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 81 82 83 // const 84 static const char default_hfp_ag_service_name[] = "Voice gateway"; 85 86 // globals 87 static btstack_packet_callback_registration_t hfp_ag_hci_event_callback_registration; 88 89 static uint16_t hfp_supported_features; 90 91 static uint8_t hfp_codecs_nr; 92 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 93 94 static int hfp_ag_indicators_nr; 95 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_INDICATORS]; 96 97 static int hfp_generic_status_indicators_nr; 98 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_INDICATORS]; 99 100 static int hfp_ag_call_hold_services_nr; 101 static char *hfp_ag_call_hold_services[6]; 102 static btstack_packet_handler_t hfp_ag_callback; 103 104 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 105 static int hfp_ag_response_and_hold_active; 106 107 // Subscriber information entries 108 static hfp_phone_number_t * subscriber_numbers; 109 static int subscriber_numbers_count; 110 111 // code 112 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 113 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 114 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 115 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 116 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 117 } 118 return hfp_connection->ag_indicators_nr; 119 } 120 121 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 122 // TODO: save only value, and value changed in the hfp_connection? 123 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 124 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 125 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 126 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 127 } 128 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 129 } 130 131 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 132 int i; 133 for (i = 0; i < hfp_ag_indicators_nr; i++){ 134 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 135 return &hfp_ag_indicators[i]; 136 } 137 } 138 return NULL; 139 } 140 141 static int get_ag_indicator_index_for_name(const char * name){ 142 int i; 143 for (i = 0; i < hfp_ag_indicators_nr; i++){ 144 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 145 return i; 146 } 147 } 148 return -1; 149 } 150 151 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 152 btstack_linked_list_iterator_t it; 153 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 154 while (btstack_linked_list_iterator_has_next(&it)){ 155 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 156 if (hfp_connection->acl_handle != handle) continue; 157 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 158 return hfp_connection; 159 } 160 return NULL; 161 } 162 163 static int use_in_band_tone(void){ 164 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 165 } 166 167 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 168 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 169 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 170 return hf && ag; 171 } 172 173 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 174 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 175 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 176 return hf && ag; 177 } 178 179 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 180 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 181 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 182 return hf && ag; 183 } 184 185 /* unsolicited responses */ 186 187 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 188 char buffer[20]; 189 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", 190 HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 191 buffer[sizeof(buffer) - 1] = 0; 192 return send_str_over_rfcomm(cid, buffer); 193 } 194 195 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 196 char buffer[40]; 197 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n\r\nOK\r\n", 198 HFP_SUPPORTED_FEATURES, hfp_supported_features); 199 buffer[sizeof(buffer) - 1] = 0; 200 return send_str_over_rfcomm(cid, buffer); 201 } 202 203 static int hfp_ag_send_ok(uint16_t cid){ 204 char buffer[10]; 205 snprintf(buffer, sizeof(buffer), "\r\nOK\r\n"); 206 buffer[sizeof(buffer) - 1] = 0; 207 return send_str_over_rfcomm(cid, buffer); 208 } 209 210 static int hfp_ag_send_ring(uint16_t cid){ 211 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 212 } 213 214 static int hfp_ag_send_no_carrier(uint16_t cid){ 215 char buffer[15]; 216 snprintf(buffer, sizeof(buffer), "\r\nNO CARRIER\r\n"); 217 buffer[sizeof(buffer) - 1] = 0; 218 return send_str_over_rfcomm(cid, buffer); 219 } 220 221 static int hfp_ag_send_clip(uint16_t cid){ 222 char buffer[50]; 223 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, 224 hfp_gsm_clip_number(), hfp_gsm_clip_type()); 225 buffer[sizeof(buffer) - 1] = 0; 226 return send_str_over_rfcomm(cid, buffer); 227 } 228 229 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 230 char buffer[50]; 231 snprintf(buffer, sizeof(buffer), "\r\n%s: ,\"%s\",%u, , \r\n", 232 HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 233 buffer[sizeof(buffer) - 1] = 0; 234 return send_str_over_rfcomm(cid, buffer); 235 } 236 237 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 238 char buffer[50]; 239 snprintf(buffer, sizeof(buffer), "\r\n%s: %s\r\n", 240 HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 241 buffer[sizeof(buffer) - 1] = 0; 242 return send_str_over_rfcomm(cid, buffer); 243 } 244 245 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 246 char buffer[50]; 247 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", 248 HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), 249 hfp_gsm_clip_type()); 250 buffer[sizeof(buffer) - 1] = 0; 251 return send_str_over_rfcomm(cid, buffer); 252 } 253 254 static int hfp_ag_send_error(uint16_t cid){ 255 char buffer[10]; 256 snprintf(buffer, sizeof(buffer), "\r\nERROR\r\n"); 257 buffer[sizeof(buffer) - 1] = 0; 258 return send_str_over_rfcomm(cid, buffer); 259 } 260 261 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 262 char buffer[20]; 263 snprintf(buffer, sizeof(buffer), "\r\n%s=%d\r\n", 264 HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 265 buffer[sizeof(buffer) - 1] = 0; 266 return send_str_over_rfcomm(cid, buffer); 267 } 268 269 // get size for indicator string 270 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 271 // template: ("$NAME",($MIN,$MAX)) 272 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 273 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 274 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 275 } 276 277 // store indicator 278 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer, uint16_t buffer_size){ 279 snprintf((char *)buffer, buffer_size, "(\"%s\",(%d,%d)),", 280 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 281 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 282 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 283 ((char *)buffer)[buffer_size - 1] = 0; 284 } 285 286 // structure: header [indicator [comma indicator]] footer 287 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 288 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 289 if (!num_indicators) return 2; 290 return 3 + ((num_indicators-1) * 2); 291 } 292 293 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 294 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 295 if (index == 0) { 296 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 297 } 298 index--; 299 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 300 int indicator_index = index >> 1; 301 if ((index & 1) == 0){ 302 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 303 } 304 if (indicator_index == (num_indicators - 1)){ 305 return 8; // "\r\n\r\nOK\r\n" 306 } 307 return 1; // comma 308 } 309 310 static void hfp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer, uint16_t buffer_size){ 311 if (index == 0){ 312 *buffer++ = '\r'; 313 *buffer++ = '\n'; 314 int len = strlen(HFP_INDICATOR); 315 (void)memcpy(buffer, HFP_INDICATOR, len); 316 buffer += len; 317 *buffer++ = ':'; 318 return; 319 } 320 index--; 321 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 322 int indicator_index = index >> 1; 323 if ((index & 1) == 0){ 324 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer, buffer_size); 325 return; 326 } 327 if (indicator_index == (num_indicators-1)){ 328 (void)memcpy(buffer, "\r\n\r\nOK\r\n", 8); 329 return; 330 } 331 *buffer = ','; 332 } 333 334 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 335 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 336 int i; 337 int offset = 0; 338 for (i = 0; i < (hfp_generic_status_indicators_nr-1); i++) { 339 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 340 } 341 if (i < hfp_generic_status_indicators_nr){ 342 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_generic_status_indicators[i].uuid); 343 } 344 return offset; 345 } 346 347 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 348 if (buffer_size < (hfp_generic_status_indicators_nr * 3)) return 0; 349 int i; 350 int offset = 0; 351 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 352 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); 353 } 354 return offset; 355 } 356 357 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 358 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 359 int i; 360 int offset = 0; 361 for (i = 0; i < (hfp_ag_indicators_nr-1); i++) { 362 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 363 } 364 if (i<hfp_ag_indicators_nr){ 365 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 366 } 367 return offset; 368 } 369 370 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 371 if (buffer_size < (hfp_ag_call_hold_services_nr * 3)) return 0; 372 int i; 373 int offset = snprintf(buffer, buffer_size, "("); 374 for (i = 0; i < (hfp_ag_call_hold_services_nr-1); i++) { 375 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 376 } 377 if (i<hfp_ag_call_hold_services_nr){ 378 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 379 } 380 return offset; 381 } 382 383 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 384 int start_segment, int num_segments, 385 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 386 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer, uint16_t buffer_size)){ 387 388 // assumes: can send now == true 389 // assumes: num segments > 0 390 // assumes: individual segments are smaller than MTU 391 rfcomm_reserve_packet_buffer(); 392 int mtu = rfcomm_get_max_frame_size(cid); 393 uint8_t * data = rfcomm_get_outgoing_buffer(); 394 int offset = 0; 395 int segment = start_segment; 396 while (segment < num_segments){ 397 int segment_len = get_segment_len(hfp_connection, segment); 398 if ((offset + segment_len + 1) > mtu) break; 399 // append segment. As it appends a '\0', we provide a buffer one byte larger 400 store_segment(hfp_connection, segment, data+offset, segment_len + 1); 401 offset += segment_len; 402 segment++; 403 } 404 rfcomm_send_prepared(cid, offset); 405 #ifdef ENABLE_HFP_AT_MESSAGES 406 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_SENT, (char *) data); 407 #endif 408 return segment; 409 } 410 411 // returns next segment to store 412 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 413 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 414 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 415 hfp_ag_indicators_cmd_generator_get_segment_len, 416 hfp_ag_indicators_cmd_generator_store_segment); 417 } 418 419 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 420 char buffer[40]; 421 const int size = sizeof(buffer); 422 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 423 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 424 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 425 return send_str_over_rfcomm(cid, buffer); 426 } 427 428 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 429 char buffer[40]; 430 const int size = sizeof(buffer); 431 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 432 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 433 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 434 return send_str_over_rfcomm(cid, buffer); 435 } 436 437 438 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 439 return hfp_ag_send_ok(cid); 440 } 441 442 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 443 char buffer[40]; 444 const int size = sizeof(buffer); 445 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 446 offset += hfp_hf_indicators_join(buffer+offset, size-offset-10); 447 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 448 return send_str_over_rfcomm(cid, buffer); 449 } 450 451 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 452 char buffer[40]; 453 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 454 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 455 return send_str_over_rfcomm(cid, buffer); 456 } 457 458 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 459 char buffer[20]; 460 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d\r\n", 461 HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, 462 indicator->status); 463 buffer[sizeof(buffer) - 1] = 0; 464 return send_str_over_rfcomm(cid, buffer); 465 } 466 467 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 468 char buffer[41]; 469 if (strlen(op.name) == 0){ 470 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 471 } else { 472 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 473 offset += snprintf(buffer+offset, 16, "%s", op.name); 474 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 475 } 476 return send_str_over_rfcomm(cid, buffer); 477 } 478 479 static inline int hfp_ag_send_cmd_with_space_and_int(uint16_t cid, const char * cmd, uint8_t value){ 480 char buffer[30]; 481 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", cmd, value); 482 return send_str_over_rfcomm(cid, buffer); 483 } 484 485 486 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 487 char buffer[30]; 488 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 489 return send_str_over_rfcomm(cid, buffer); 490 } 491 492 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 493 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 494 } 495 496 static int hfp_ag_send_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 497 return hfp_ag_send_cmd_with_space_and_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 498 } 499 500 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 501 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 502 } 503 504 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 505 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 506 } 507 508 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 509 return hfp_ag_send_cmd_with_space_and_int(cid, HFP_RESPONSE_AND_HOLD, state); 510 } 511 512 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 513 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 514 515 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 516 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 517 return HFP_CODEC_MSBC; 518 } 519 } 520 return HFP_CODEC_CVSD; 521 } 522 523 /* state machines */ 524 525 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 526 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4)); 527 } 528 529 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 530 /* events ( == commands): 531 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 532 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 533 hf_trigger_codec_connection_setup == received BCC 534 ag_trigger_codec_connection_setup == received from AG to send BCS 535 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 536 */ 537 switch (hfp_connection->codecs_state){ 538 case HFP_CODECS_EXCHANGED: 539 if (hfp_connection->command == HFP_CMD_AVAILABLE_CODECS){ 540 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 541 return 1; 542 } 543 break; 544 545 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 546 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 547 break; 548 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 549 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 550 break; 551 default: 552 break; 553 } 554 555 switch (hfp_connection->command){ 556 case HFP_CMD_AVAILABLE_CODECS: 557 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 558 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 559 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 560 return 1; 561 } 562 563 switch (hfp_connection->codecs_state){ 564 case HFP_CODECS_AG_SENT_COMMON_CODEC: 565 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 566 break; 567 default: 568 break; 569 } 570 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 571 return 1; 572 573 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 574 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 575 hfp_connection->establish_audio_connection = 1; 576 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 577 return 1; 578 579 case HFP_CMD_AG_SEND_COMMON_CODEC: 580 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 581 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 582 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 583 return 1; 584 585 case HFP_CMD_HF_CONFIRMED_CODEC: 586 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 587 hfp_connection->codecs_state = HFP_CODECS_ERROR; 588 hfp_ag_send_error(hfp_connection->rfcomm_cid); 589 return 1; 590 } 591 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 592 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 593 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 594 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 595 // now, pick link settings 596 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 597 #ifdef ENABLE_CC256X_ASSISTED_HFP 598 hfp_cc256x_prepare_for_sco(hfp_connection); 599 #endif 600 return 1; 601 default: 602 break; 603 } 604 return 0; 605 } 606 607 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 608 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 609 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 610 611 // if active call exist, set per-hfp_connection state active, too (when audio is on) 612 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 613 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 614 } 615 // if AG is ringing, also start ringing on the HF 616 if ((hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS) && 617 (hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS)){ 618 hfp_ag_hf_start_ringing(hfp_connection); 619 } 620 } 621 622 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 623 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 624 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 625 int sent = 0; 626 switch(hfp_connection->command){ 627 case HFP_CMD_SUPPORTED_FEATURES: 628 switch(hfp_connection->state){ 629 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 630 case HFP_EXCHANGE_SUPPORTED_FEATURES: 631 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 632 if (has_codec_negotiation_feature(hfp_connection)){ 633 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 634 } else { 635 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 636 } 637 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 638 return 1; 639 default: 640 break; 641 } 642 break; 643 case HFP_CMD_AVAILABLE_CODECS: 644 sent = codecs_exchange_state_machine(hfp_connection); 645 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 646 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 647 } 648 return sent; 649 650 case HFP_CMD_RETRIEVE_AG_INDICATORS: 651 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 652 // HF requested AG Indicators and we did expect it 653 hfp_connection->send_ag_indicators_segment = 0; 654 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 655 // continue below in state switch 656 } 657 break; 658 659 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 660 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 661 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 662 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 663 return 1; 664 665 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 666 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 667 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 668 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 669 } else if (has_hf_indicators_feature(hfp_connection)){ 670 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 671 } else { 672 hfp_ag_slc_established(hfp_connection); 673 } 674 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 675 return 1; 676 677 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 678 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 679 if (has_hf_indicators_feature(hfp_connection)){ 680 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 681 } 682 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 683 if (!has_hf_indicators_feature(hfp_connection)){ 684 hfp_ag_slc_established(hfp_connection); 685 } 686 return 1; 687 688 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 689 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 690 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 691 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 692 return 1; 693 694 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 695 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 696 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 697 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 698 return 1; 699 700 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 701 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 702 hfp_ag_slc_established(hfp_connection); 703 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 704 return 1; 705 default: 706 break; 707 } 708 709 switch (hfp_connection->state){ 710 case HFP_RETRIEVE_INDICATORS: { 711 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 712 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 713 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 714 if (next_segment < num_segments){ 715 // prepare sending of next segment 716 hfp_connection->send_ag_indicators_segment = next_segment; 717 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 718 } else { 719 // done, go to next state 720 hfp_connection->send_ag_indicators_segment = 0; 721 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 722 } 723 return 1; 724 } 725 default: 726 break; 727 } 728 return 0; 729 } 730 731 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 732 int sent = codecs_exchange_state_machine(hfp_connection); 733 if (sent) return 1; 734 735 switch(hfp_connection->command){ 736 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 737 hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 738 if (hfp_connection->ag_activate_voice_recognition > 0){ 739 hfp_ag_setup_audio_connection(hfp_connection); 740 } else { 741 hfp_release_audio_connection(hfp_connection); 742 } 743 return 1; 744 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 745 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 746 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 747 } else { 748 hfp_ag_send_error(hfp_connection->rfcomm_cid); 749 } 750 return 1; 751 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 752 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 753 return 1; 754 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 755 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 756 return 1; 757 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 758 if (hfp_connection->network_operator.format != 0){ 759 hfp_ag_send_error(hfp_connection->rfcomm_cid); 760 } else { 761 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 762 } 763 return 1; 764 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 765 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 766 return 1; 767 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 768 if (hfp_connection->extended_audio_gateway_error){ 769 hfp_connection->extended_audio_gateway_error = 0; 770 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 771 return 1; 772 } 773 break; 774 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 775 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 776 return 1; 777 default: 778 break; 779 } 780 return 0; 781 } 782 783 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 784 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 785 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 786 787 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 788 789 // accept incoming audio connection (codec negotiation is not used) 790 if (hfp_connection->accept_sco){ 791 // notify about codec selection if not done already 792 if (hfp_connection->negotiated_codec == 0){ 793 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 794 } 795 // 796 bool incoming_eSCO = hfp_connection->accept_sco == 2; 797 hfp_connection->accept_sco = 0; 798 hfp_connection->state = HFP_W4_SCO_CONNECTED; 799 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 800 return 1; 801 } 802 803 // run codecs exchange 804 int sent = codecs_exchange_state_machine(hfp_connection); 805 if (sent) return 1; 806 807 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 808 if (hfp_connection->establish_audio_connection){ 809 hfp_connection->state = HFP_W4_SCO_CONNECTED; 810 hfp_connection->establish_audio_connection = 0; 811 hfp_setup_synchronous_connection(hfp_connection); 812 return 1; 813 } 814 return 0; 815 } 816 817 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 818 btstack_linked_list_iterator_t it; 819 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 820 821 while (btstack_linked_list_iterator_has_next(&it)){ 822 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 823 if ( & hfp_connection->hfp_timeout == ts) { 824 return hfp_connection; 825 } 826 } 827 return NULL; 828 } 829 830 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 831 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 832 if (!hfp_connection) return; 833 834 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 835 hfp_connection->ag_ring = 1; 836 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 837 838 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 839 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 840 841 hfp_ag_run_for_context(hfp_connection); 842 } 843 844 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 845 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 846 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 847 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 848 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 849 } 850 851 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 852 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 853 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 854 } 855 856 static void hfp_ag_set_callsetup_indicator(void){ 857 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 858 if (!indicator){ 859 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 860 return; 861 }; 862 indicator->status = hfp_gsm_callsetup_status(); 863 } 864 865 static void hfp_ag_set_callheld_indicator(void){ 866 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 867 if (!indicator){ 868 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 869 return; 870 }; 871 indicator->status = hfp_gsm_callheld_status(); 872 } 873 874 // 875 // transitition implementations for hfp_ag_call_state_machine 876 // 877 878 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 879 if (use_in_band_tone()){ 880 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 881 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 882 } else { 883 hfp_timeout_start(hfp_connection); 884 hfp_connection->ag_ring = 1; 885 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 886 hfp_connection->call_state = HFP_CALL_RINGING; 887 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 888 } 889 } 890 891 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 892 hfp_connection->ag_ring = 0; 893 hfp_connection->ag_send_clip = 0; 894 hfp_timeout_stop(hfp_connection); 895 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 896 } 897 898 static void hfp_ag_trigger_incoming_call(void){ 899 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 900 if (indicator_index < 0) return; 901 902 btstack_linked_list_iterator_t it; 903 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 904 while (btstack_linked_list_iterator_has_next(&it)){ 905 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 906 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 907 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 908 if (hfp_connection->call_state == HFP_CALL_IDLE){ 909 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 910 hfp_ag_hf_start_ringing(hfp_connection); 911 } 912 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 913 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 914 } 915 hfp_ag_run_for_context(hfp_connection); 916 } 917 } 918 919 static void hfp_ag_trigger_outgoing_call(void){ 920 btstack_linked_list_iterator_t it; 921 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 922 while (btstack_linked_list_iterator_has_next(&it)){ 923 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 924 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 925 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 926 if (hfp_connection->call_state == HFP_CALL_IDLE){ 927 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 928 } 929 } 930 } 931 932 static void hfp_ag_handle_outgoing_call_accepted(hfp_connection_t * hfp_connection){ 933 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 934 935 // trigger callsetup to be 936 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 937 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 938 939 int indicator_index ; 940 941 hfp_ag_set_callsetup_indicator(); 942 indicator_index = get_ag_indicator_index_for_name("callsetup"); 943 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 944 945 // put current call on hold if active 946 if (put_call_on_hold){ 947 log_info("AG putting current call on hold for new outgoing call"); 948 hfp_ag_set_callheld_indicator(); 949 indicator_index = get_ag_indicator_index_for_name("callheld"); 950 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 951 } 952 953 // start audio if needed 954 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 955 } 956 957 static void hfp_ag_transfer_indicator(const char * name){ 958 int indicator_index = get_ag_indicator_index_for_name(name); 959 if (indicator_index < 0) return; 960 961 btstack_linked_list_iterator_t it; 962 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 963 while (btstack_linked_list_iterator_has_next(&it)){ 964 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 965 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 966 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 967 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 968 hfp_ag_run_for_context(hfp_connection); 969 } 970 } 971 972 static void hfp_ag_transfer_callsetup_state(void){ 973 hfp_ag_transfer_indicator("callsetup"); 974 } 975 976 static void hfp_ag_transfer_call_state(void){ 977 hfp_ag_transfer_indicator("call"); 978 } 979 980 static void hfp_ag_transfer_callheld_state(void){ 981 hfp_ag_transfer_indicator("callheld"); 982 } 983 984 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 985 int call_indicator_index = get_ag_indicator_index_for_name("call"); 986 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 987 988 btstack_linked_list_iterator_t it; 989 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 990 while (btstack_linked_list_iterator_has_next(&it)){ 991 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 992 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 993 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 994 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 995 996 hfp_ag_hf_stop_ringing(hfp_connection); 997 if (hfp_connection == source){ 998 999 if (use_in_band_tone()){ 1000 hfp_connection->call_state = HFP_CALL_ACTIVE; 1001 } else { 1002 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 1003 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1004 } 1005 1006 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1007 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1008 1009 } else { 1010 hfp_connection->call_state = HFP_CALL_IDLE; 1011 } 1012 hfp_ag_run_for_context(hfp_connection); 1013 } 1014 } 1015 1016 static void hfp_ag_ag_accept_call(void){ 1017 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1018 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1019 1020 btstack_linked_list_iterator_t it; 1021 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1022 while (btstack_linked_list_iterator_has_next(&it)){ 1023 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1024 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1025 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 1026 1027 hfp_ag_hf_stop_ringing(hfp_connection); 1028 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1029 1030 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1031 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1032 1033 hfp_ag_run_for_context(hfp_connection); 1034 break; // only single 1035 } 1036 } 1037 1038 static void hfp_ag_trigger_reject_call(void){ 1039 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 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 * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1044 if (connection->local_role != HFP_ROLE_AG) continue; 1045 if ((connection->call_state != HFP_CALL_RINGING) && 1046 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1047 hfp_ag_hf_stop_ringing(connection); 1048 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1049 connection->call_state = HFP_CALL_IDLE; 1050 hfp_ag_run_for_context(connection); 1051 } 1052 } 1053 1054 static void hfp_ag_trigger_terminate_call(void){ 1055 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1056 1057 btstack_linked_list_iterator_t it; 1058 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1059 while (btstack_linked_list_iterator_has_next(&it)){ 1060 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1061 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1062 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1063 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1064 hfp_connection->call_state = HFP_CALL_IDLE; 1065 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1066 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1067 hfp_connection->release_audio_connection = 1; 1068 } 1069 hfp_ag_run_for_context(hfp_connection); 1070 } 1071 hfp_emit_simple_event(NULL, HFP_SUBEVENT_CALL_TERMINATED); 1072 } 1073 1074 static void hfp_ag_set_call_indicator(void){ 1075 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1076 if (!indicator){ 1077 log_error("hfp_ag_set_call_state: call indicator is missing"); 1078 return; 1079 }; 1080 indicator->status = hfp_gsm_call_status(); 1081 } 1082 1083 static void hfp_ag_stop_ringing(void){ 1084 btstack_linked_list_iterator_t it; 1085 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1086 while (btstack_linked_list_iterator_has_next(&it)){ 1087 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1088 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1089 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1090 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1091 hfp_ag_hf_stop_ringing(hfp_connection); 1092 } 1093 } 1094 1095 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1096 btstack_linked_list_iterator_t it; 1097 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1098 while (btstack_linked_list_iterator_has_next(&it)){ 1099 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1100 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1101 if (hfp_connection->call_state == call_state) return hfp_connection; 1102 } 1103 return NULL; 1104 } 1105 1106 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1107 btstack_linked_list_iterator_t it; 1108 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1109 while (btstack_linked_list_iterator_has_next(&it)){ 1110 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1111 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1112 hfp_connection->send_response_and_hold_status = state + 1; 1113 } 1114 } 1115 1116 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1117 int indicator_index; 1118 switch (hfp_connection->call_state){ 1119 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1120 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1121 // we got event: audio hfp_connection established 1122 hfp_timeout_start(hfp_connection); 1123 hfp_connection->ag_ring = 1; 1124 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1125 hfp_connection->call_state = HFP_CALL_RINGING; 1126 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1127 break; 1128 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1129 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1130 // we got event: audio hfp_connection established 1131 hfp_connection->call_state = HFP_CALL_ACTIVE; 1132 break; 1133 case HFP_CALL_W2_SEND_CALL_WAITING: 1134 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1135 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1136 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1137 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1138 break; 1139 default: 1140 break; 1141 } 1142 return 0; 1143 } 1144 1145 // functions extracted from hfp_ag_call_sm below 1146 static void hfp_ag_handle_reject_outgoing_call(void){ 1147 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1148 if (!hfp_connection){ 1149 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1150 return; 1151 } 1152 1153 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1154 hfp_connection->call_state = HFP_CALL_IDLE; 1155 hfp_connection->send_error = 1; 1156 hfp_ag_run_for_context(hfp_connection); 1157 } 1158 1159 // hfp_connection is used to identify originating HF 1160 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1161 int indicator_index; 1162 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1163 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1164 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1165 1166 switch (event){ 1167 case HFP_AG_INCOMING_CALL: 1168 switch (hfp_gsm_call_status()){ 1169 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1170 switch (hfp_gsm_callsetup_status()){ 1171 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1172 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1173 hfp_ag_set_callsetup_indicator(); 1174 hfp_ag_trigger_incoming_call(); 1175 log_info("AG rings"); 1176 break; 1177 default: 1178 break; 1179 } 1180 break; 1181 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1182 switch (hfp_gsm_callsetup_status()){ 1183 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1184 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1185 hfp_ag_set_callsetup_indicator(); 1186 hfp_ag_trigger_incoming_call(); 1187 log_info("AG call waiting"); 1188 break; 1189 default: 1190 break; 1191 } 1192 break; 1193 default: 1194 break; 1195 } 1196 break; 1197 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1198 switch (hfp_gsm_call_status()){ 1199 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1200 switch (hfp_gsm_callsetup_status()){ 1201 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1202 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1203 hfp_ag_set_call_indicator(); 1204 hfp_ag_set_callsetup_indicator(); 1205 hfp_ag_ag_accept_call(); 1206 log_info("AG answers call, accept call by GSM"); 1207 break; 1208 default: 1209 break; 1210 } 1211 break; 1212 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1213 switch (hfp_gsm_callsetup_status()){ 1214 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1215 log_info("AG: current call is placed on hold, incoming call gets active"); 1216 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1217 hfp_ag_set_callsetup_indicator(); 1218 hfp_ag_set_callheld_indicator(); 1219 hfp_ag_transfer_callsetup_state(); 1220 hfp_ag_transfer_callheld_state(); 1221 break; 1222 default: 1223 break; 1224 } 1225 break; 1226 default: 1227 break; 1228 } 1229 break; 1230 1231 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1232 switch (hfp_gsm_call_status()){ 1233 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1234 switch (hfp_gsm_callheld_status()){ 1235 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1236 log_info("AG: joining held call with active call"); 1237 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1238 hfp_ag_set_callheld_indicator(); 1239 hfp_ag_transfer_callheld_state(); 1240 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1241 break; 1242 default: 1243 break; 1244 } 1245 break; 1246 default: 1247 break; 1248 } 1249 break; 1250 1251 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1252 switch (hfp_gsm_call_status()){ 1253 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1254 switch (hfp_gsm_callsetup_status()){ 1255 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1256 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1257 hfp_ag_set_callsetup_indicator(); 1258 hfp_ag_set_call_indicator(); 1259 hfp_ag_hf_accept_call(hfp_connection); 1260 hfp_connection->ok_pending = 1; 1261 log_info("HF answers call, accept call by GSM"); 1262 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1263 break; 1264 default: 1265 break; 1266 } 1267 break; 1268 default: 1269 break; 1270 } 1271 break; 1272 1273 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1274 switch (hfp_gsm_call_status()){ 1275 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1276 switch (hfp_gsm_callsetup_status()){ 1277 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1278 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1279 hfp_ag_response_and_hold_active = 1; 1280 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1281 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1282 // as with regualr call 1283 hfp_ag_set_call_indicator(); 1284 hfp_ag_set_callsetup_indicator(); 1285 hfp_ag_ag_accept_call(); 1286 log_info("AG response and hold - hold by AG"); 1287 break; 1288 default: 1289 break; 1290 } 1291 break; 1292 default: 1293 break; 1294 } 1295 break; 1296 1297 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1298 switch (hfp_gsm_call_status()){ 1299 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1300 switch (hfp_gsm_callsetup_status()){ 1301 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1302 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1303 hfp_ag_response_and_hold_active = 1; 1304 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1305 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1306 // as with regualr call 1307 hfp_ag_set_call_indicator(); 1308 hfp_ag_set_callsetup_indicator(); 1309 hfp_ag_hf_accept_call(hfp_connection); 1310 log_info("AG response and hold - hold by HF"); 1311 break; 1312 default: 1313 break; 1314 } 1315 break; 1316 default: 1317 break; 1318 } 1319 break; 1320 1321 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1322 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1323 if (!hfp_ag_response_and_hold_active) break; 1324 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1325 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1326 hfp_ag_response_and_hold_active = 0; 1327 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1328 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1329 log_info("Held Call accepted and active"); 1330 break; 1331 1332 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1333 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1334 if (!hfp_ag_response_and_hold_active) break; 1335 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1336 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1337 hfp_ag_response_and_hold_active = 0; 1338 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1339 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1340 // from terminate by ag 1341 hfp_ag_set_call_indicator(); 1342 hfp_ag_trigger_terminate_call(); 1343 break; 1344 1345 case HFP_AG_TERMINATE_CALL_BY_HF: 1346 switch (hfp_gsm_call_status()){ 1347 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1348 switch (hfp_gsm_callsetup_status()){ 1349 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1350 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1351 hfp_ag_set_callsetup_indicator(); 1352 hfp_ag_transfer_callsetup_state(); 1353 hfp_ag_trigger_reject_call(); 1354 log_info("HF Rejected Incoming call, AG terminate call"); 1355 break; 1356 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1357 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1358 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1359 hfp_ag_set_callsetup_indicator(); 1360 hfp_ag_transfer_callsetup_state(); 1361 log_info("AG terminate outgoing call process"); 1362 break; 1363 default: 1364 break; 1365 } 1366 break; 1367 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1368 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1369 hfp_ag_set_callsetup_indicator(); 1370 hfp_ag_set_call_indicator(); 1371 hfp_ag_trigger_terminate_call(); 1372 log_info("AG terminate call"); 1373 break; 1374 default: 1375 break; 1376 } 1377 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1378 break; 1379 1380 case HFP_AG_TERMINATE_CALL_BY_AG: 1381 switch (hfp_gsm_call_status()){ 1382 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1383 switch (hfp_gsm_callsetup_status()){ 1384 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1385 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1386 hfp_ag_set_callsetup_indicator(); 1387 hfp_ag_trigger_reject_call(); 1388 log_info("AG Rejected Incoming call, AG terminate call"); 1389 break; 1390 default: 1391 break; 1392 } 1393 break; 1394 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1395 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1396 hfp_ag_set_callsetup_indicator(); 1397 hfp_ag_set_call_indicator(); 1398 hfp_ag_trigger_terminate_call(); 1399 log_info("AG terminate call"); 1400 break; 1401 default: 1402 break; 1403 } 1404 break; 1405 case HFP_AG_CALL_DROPPED: 1406 switch (hfp_gsm_call_status()){ 1407 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1408 switch (hfp_gsm_callsetup_status()){ 1409 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1410 hfp_ag_stop_ringing(); 1411 log_info("Incoming call interrupted"); 1412 break; 1413 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1414 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1415 log_info("Outgoing call interrupted\n"); 1416 log_info("AG notify call dropped\n"); 1417 break; 1418 default: 1419 break; 1420 } 1421 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1422 hfp_ag_set_callsetup_indicator(); 1423 hfp_ag_transfer_callsetup_state(); 1424 hfp_ag_trigger_terminate_call(); 1425 break; 1426 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1427 if (hfp_ag_response_and_hold_active) { 1428 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1429 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1430 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1431 } 1432 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1433 hfp_ag_set_callsetup_indicator(); 1434 hfp_ag_set_call_indicator(); 1435 hfp_ag_trigger_terminate_call(); 1436 log_info("AG notify call dropped"); 1437 break; 1438 default: 1439 break; 1440 } 1441 break; 1442 1443 case HFP_AG_OUTGOING_CALL_INITIATED_BY_HF: 1444 // directly reject call if number of free slots is exceeded 1445 if (!hfp_gsm_call_possible()){ 1446 hfp_connection->send_error = 1; 1447 hfp_ag_run_for_context(hfp_connection); 1448 break; 1449 } 1450 1451 // note: number not used currently 1452 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1453 1454 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1455 1456 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1457 break; 1458 1459 case HFP_AG_OUTGOING_CALL_INITIATED_BY_AG: 1460 // directly reject call if number of free slots is exceeded 1461 if (!hfp_gsm_call_possible()) { 1462 // TODO: no error for user 1463 break; 1464 } 1465 switch (hfp_gsm_call_status()) { 1466 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1467 switch (hfp_gsm_callsetup_status()) { 1468 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1469 // note: number not used currently 1470 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, 0, 0, "1234567"); 1471 // init call state for all connections 1472 hfp_ag_trigger_outgoing_call(); 1473 // get first one and accept call 1474 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1475 if (hfp_connection) { 1476 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1477 } 1478 break; 1479 default: 1480 // TODO: no error for user 1481 break; 1482 } 1483 break; 1484 default: 1485 // TODO: no error for user 1486 break; 1487 } 1488 break; 1489 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1490 // directly reject call if number of free slots is exceeded 1491 if (!hfp_gsm_call_possible()){ 1492 hfp_connection->send_error = 1; 1493 hfp_ag_run_for_context(hfp_connection); 1494 break; 1495 } 1496 1497 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1498 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1499 1500 log_info("Redial last number"); 1501 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1502 1503 if (strlen(last_dialed_number) > 0){ 1504 log_info("Last number exists: accept call"); 1505 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1506 } else { 1507 log_info("log_infoLast number missing: reject call"); 1508 hfp_ag_handle_reject_outgoing_call(); 1509 } 1510 break; 1511 } 1512 case HFP_AG_OUTGOING_CALL_REJECTED: 1513 hfp_ag_handle_reject_outgoing_call(); 1514 break; 1515 1516 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1517 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1518 if (!hfp_connection){ 1519 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1520 break; 1521 } 1522 1523 hfp_connection->ok_pending = 1; 1524 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1525 break; 1526 } 1527 case HFP_AG_OUTGOING_CALL_RINGING: 1528 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1529 if (!hfp_connection){ 1530 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1531 break; 1532 } 1533 1534 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1535 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1536 hfp_ag_set_callsetup_indicator(); 1537 hfp_ag_transfer_callsetup_state(); 1538 break; 1539 1540 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1541 // get outgoing call 1542 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1543 if (!hfp_connection){ 1544 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1545 } 1546 if (!hfp_connection){ 1547 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1548 break; 1549 } 1550 1551 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1552 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1553 hfp_connection->call_state = HFP_CALL_ACTIVE; 1554 hfp_ag_set_callsetup_indicator(); 1555 hfp_ag_set_call_indicator(); 1556 hfp_ag_transfer_call_state(); 1557 hfp_ag_transfer_callsetup_state(); 1558 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1559 hfp_ag_set_callheld_indicator(); 1560 hfp_ag_transfer_callheld_state(); 1561 } 1562 break; 1563 } 1564 1565 case HFP_AG_CALL_HOLD_USER_BUSY: 1566 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1567 hfp_ag_set_callsetup_indicator(); 1568 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1569 hfp_connection->call_state = HFP_CALL_ACTIVE; 1570 log_info("AG: Call Waiting, User Busy"); 1571 break; 1572 1573 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1574 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1575 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1576 1577 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1578 if (call_held || call_setup_in_progress){ 1579 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1580 0, NULL); 1581 1582 } 1583 1584 if (call_setup_in_progress){ 1585 log_info("AG: Call Dropped, Accept new call"); 1586 hfp_ag_set_callsetup_indicator(); 1587 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1588 } else { 1589 log_info("AG: Call Dropped, Resume held call"); 1590 } 1591 if (call_held){ 1592 hfp_ag_set_callheld_indicator(); 1593 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1594 } 1595 1596 hfp_connection->call_state = HFP_CALL_ACTIVE; 1597 break; 1598 } 1599 1600 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1601 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1602 // only update if callsetup changed 1603 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1604 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1605 NULL); 1606 1607 if (call_setup_in_progress){ 1608 log_info("AG: Call on Hold, Accept new call"); 1609 hfp_ag_set_callsetup_indicator(); 1610 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1611 } else { 1612 log_info("AG: Swap calls"); 1613 } 1614 1615 hfp_ag_set_callheld_indicator(); 1616 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1617 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1618 hfp_connection->call_state = HFP_CALL_ACTIVE; 1619 break; 1620 } 1621 1622 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1623 // Adds a held call to the conversation. 1624 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1625 log_info("AG: Join 3-way-call"); 1626 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1627 hfp_ag_set_callheld_indicator(); 1628 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1629 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1630 } 1631 hfp_connection->call_state = HFP_CALL_ACTIVE; 1632 break; 1633 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1634 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1635 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1636 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1637 hfp_ag_set_call_indicator(); 1638 hfp_ag_set_callheld_indicator(); 1639 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1640 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1641 hfp_connection->call_state = HFP_CALL_IDLE; 1642 break; 1643 1644 default: 1645 break; 1646 } 1647 1648 1649 } 1650 1651 1652 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1653 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1654 if (!active_call) return; 1655 1656 int idx = active_call->index; 1657 hfp_enhanced_call_dir_t dir = active_call->direction; 1658 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1659 hfp_enhanced_call_mode_t mode = active_call->mode; 1660 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1661 uint8_t type = active_call->clip_type; 1662 char * number = active_call->clip_number; 1663 1664 char buffer[100]; 1665 // TODO: check length of a buffer, to fit the MTU 1666 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1667 if (number){ 1668 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1669 } 1670 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1671 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, 1672 mode, mpty, type, number); 1673 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1674 } 1675 1676 1677 // sends pending command, returns if command was sent 1678 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1679 1680 if (hfp_connection->send_status_of_current_calls){ 1681 hfp_connection->ok_pending = 0; 1682 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1683 hfp_connection->next_call_index++; 1684 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1685 return 1; 1686 } else { 1687 // 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 1688 hfp_connection->next_call_index = 0; 1689 hfp_connection->ok_pending = 1; 1690 hfp_connection->send_status_of_current_calls = 0; 1691 } 1692 } 1693 1694 if (hfp_connection->ag_notify_incoming_call_waiting){ 1695 hfp_connection->ag_notify_incoming_call_waiting = 0; 1696 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1697 return 1; 1698 } 1699 1700 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1701 hfp_connection->ok_pending = 0; 1702 hfp_connection->send_error = 0; 1703 hfp_connection->command = HFP_CMD_NONE; 1704 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1705 return 1; 1706 } 1707 1708 if (hfp_connection->send_error){ 1709 hfp_connection->send_error = 0; 1710 hfp_connection->command = HFP_CMD_NONE; 1711 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1712 return 1; 1713 } 1714 1715 // note: before update AG indicators and ok_pending 1716 if (hfp_connection->send_response_and_hold_status){ 1717 int status = hfp_connection->send_response_and_hold_status - 1; 1718 hfp_connection->send_response_and_hold_status = 0; 1719 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1720 return 1; 1721 } 1722 1723 if (hfp_connection->ok_pending){ 1724 hfp_connection->ok_pending = 0; 1725 hfp_connection->command = HFP_CMD_NONE; 1726 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1727 return 1; 1728 } 1729 1730 // update AG indicators 1731 if (hfp_connection->ag_indicators_status_update_bitmap){ 1732 int i; 1733 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1734 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1735 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1736 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1737 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1738 break; 1739 } 1740 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1741 return 1; 1742 } 1743 } 1744 } 1745 1746 if (hfp_connection->ag_send_no_carrier){ 1747 hfp_connection->ag_send_no_carrier = false; 1748 hfp_ag_send_no_carrier(hfp_connection->rfcomm_cid); 1749 return 1; 1750 } 1751 1752 if (hfp_connection->ag_ring){ 1753 hfp_connection->ag_ring = 0; 1754 hfp_connection->command = HFP_CMD_NONE; 1755 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1756 return 1; 1757 } 1758 1759 if (hfp_connection->ag_send_clip){ 1760 hfp_connection->ag_send_clip = 0; 1761 hfp_connection->command = HFP_CMD_NONE; 1762 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1763 return 1; 1764 } 1765 1766 if (hfp_connection->send_phone_number_for_voice_tag){ 1767 hfp_connection->send_phone_number_for_voice_tag = 0; 1768 hfp_connection->command = HFP_CMD_NONE; 1769 hfp_connection->ok_pending = 1; 1770 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1771 return 1; 1772 } 1773 1774 if (hfp_connection->send_subscriber_number){ 1775 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1776 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1777 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1778 } else { 1779 hfp_connection->send_subscriber_number = 0; 1780 hfp_connection->next_subscriber_number_to_send = 0; 1781 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1782 } 1783 hfp_connection->command = HFP_CMD_NONE; 1784 return 1; 1785 } 1786 1787 if (hfp_connection->send_microphone_gain){ 1788 hfp_connection->send_microphone_gain = 0; 1789 hfp_connection->command = HFP_CMD_NONE; 1790 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1791 return 1; 1792 } 1793 1794 if (hfp_connection->send_speaker_gain){ 1795 hfp_connection->send_speaker_gain = 0; 1796 hfp_connection->command = HFP_CMD_NONE; 1797 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1798 return 1; 1799 } 1800 1801 if (hfp_connection->send_ag_status_indicators){ 1802 hfp_connection->send_ag_status_indicators = 0; 1803 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1804 return 1; 1805 } 1806 1807 return 0; 1808 } 1809 1810 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1811 1812 btstack_assert(hfp_connection != NULL); 1813 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1814 1815 // during SDP query, RFCOMM CID is not set 1816 if (hfp_connection->rfcomm_cid == 0) return; 1817 1818 // assert command could be sent 1819 if (hci_can_send_command_packet_now() == 0) return; 1820 1821 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 1822 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 1823 hfp_connection->release_audio_connection = 0; 1824 gap_disconnect(hfp_connection->sco_handle); 1825 return; 1826 } 1827 1828 #ifdef ENABLE_CC256X_ASSISTED_HFP 1829 // WBS Disassociate 1830 if (hfp_connection->cc256x_send_wbs_disassociate){ 1831 hfp_connection->cc256x_send_wbs_disassociate = false; 1832 hci_send_cmd(&hci_ti_wbs_disassociate); 1833 return; 1834 } 1835 // Write Codec Config 1836 if (hfp_connection->cc256x_send_write_codec_config){ 1837 hfp_connection->cc256x_send_write_codec_config = false; 1838 hfp_cc256x_write_codec_config(hfp_connection); 1839 return; 1840 } 1841 // WBS Associate 1842 if (hfp_connection->cc256x_send_wbs_associate){ 1843 hfp_connection->cc256x_send_wbs_associate = false; 1844 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 1845 return; 1846 } 1847 #endif 1848 #ifdef ENABLE_BCM_PCM_WBS 1849 // Enable WBS 1850 if (hfp_connection->bcm_send_enable_wbs){ 1851 hfp_connection->bcm_send_enable_wbs = false; 1852 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 1853 return; 1854 } 1855 // Write I2S/PCM params 1856 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 1857 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 1858 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 1859 return; 1860 } 1861 // Disable WBS 1862 if (hfp_connection->bcm_send_disable_wbs){ 1863 hfp_connection->bcm_send_disable_wbs = false; 1864 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 1865 return; 1866 } 1867 #endif 1868 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 1869 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 1870 hfp_finalize_connection_context(hfp_connection); 1871 return; 1872 } 1873 #endif 1874 1875 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1876 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1877 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1878 return; 1879 } 1880 1881 int cmd_sent = hfp_ag_send_commands(hfp_connection); 1882 1883 if (!cmd_sent){ 1884 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1885 } 1886 1887 if (!cmd_sent){ 1888 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1889 } 1890 1891 if (!cmd_sent){ 1892 cmd_sent = call_setup_state_machine(hfp_connection); 1893 } 1894 1895 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 1896 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 1897 switch (hfp_connection->codecs_state){ 1898 case HFP_CODECS_IDLE: 1899 case HFP_CODECS_RECEIVED_LIST: 1900 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1901 case HFP_CODECS_ERROR: 1902 hfp_connection->trigger_codec_exchange = 0; 1903 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1904 break; 1905 default: 1906 break; 1907 } 1908 } 1909 1910 if (!cmd_sent){ 1911 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1912 } 1913 1914 1915 // disconnect 1916 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 1917 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1918 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1919 } 1920 1921 if (cmd_sent){ 1922 hfp_connection->command = HFP_CMD_NONE; 1923 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1924 } 1925 } 1926 1927 static int hfp_parser_is_end_of_line(uint8_t byte){ 1928 return (byte == '\n') || (byte == '\r'); 1929 } 1930 1931 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1932 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1933 1934 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1935 if (size < 1) return; 1936 1937 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1938 if (!hfp_connection) return; 1939 1940 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 1941 #ifdef ENABLE_HFP_AT_MESSAGES 1942 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1943 #endif 1944 1945 // process messages byte-wise 1946 int pos; 1947 for (pos = 0; pos < size ; pos++){ 1948 hfp_parse(hfp_connection, packet[pos], 0); 1949 1950 // parse until end of line 1951 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1952 1953 hfp_generic_status_indicator_t * indicator; 1954 switch(hfp_connection->command){ 1955 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1956 if (hfp_ag_response_and_hold_active){ 1957 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1958 } 1959 hfp_connection->ok_pending = 1; 1960 break; 1961 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1962 switch(hfp_connection->ag_response_and_hold_action){ 1963 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1964 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1965 break; 1966 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1967 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1968 break; 1969 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1970 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1971 break; 1972 default: 1973 break; 1974 } 1975 hfp_connection->ok_pending = 1; 1976 break; 1977 case HFP_CMD_HF_INDICATOR_STATUS: 1978 hfp_connection->command = HFP_CMD_NONE; 1979 if (hfp_connection->parser_indicator_index < hfp_generic_status_indicators_nr){ 1980 indicator = &hfp_generic_status_indicators[hfp_connection->parser_indicator_index]; 1981 } else { 1982 hfp_connection->send_error = 1; 1983 break; 1984 } 1985 switch (indicator->uuid){ 1986 case 1: // enhanced security 1987 if (hfp_connection->parser_indicator_value > 1) { 1988 hfp_connection->send_error = 1; 1989 return; 1990 } 1991 log_info("HF Indicator 'enhanced security' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1992 break; 1993 case 2: // battery level 1994 if (hfp_connection->parser_indicator_value > 100){ 1995 hfp_connection->send_error = 1; 1996 return; 1997 } 1998 log_info("HF Indicator 'battery' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1999 break; 2000 default: 2001 log_info("HF Indicator unknown set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2002 break; 2003 } 2004 hfp_connection->ok_pending = 1; 2005 break; 2006 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 2007 // expected by SLC state machine 2008 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 2009 hfp_connection->send_ag_indicators_segment = 0; 2010 hfp_connection->send_ag_status_indicators = 1; 2011 break; 2012 case HFP_CMD_LIST_CURRENT_CALLS: 2013 hfp_connection->command = HFP_CMD_NONE; 2014 hfp_connection->next_call_index = 0; 2015 hfp_connection->send_status_of_current_calls = 1; 2016 break; 2017 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 2018 if (subscriber_numbers_count == 0){ 2019 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2020 break; 2021 } 2022 hfp_connection->next_subscriber_number_to_send = 0; 2023 hfp_connection->send_subscriber_number = 1; 2024 break; 2025 case HFP_CMD_TRANSMIT_DTMF_CODES: 2026 { 2027 hfp_connection->command = HFP_CMD_NONE; 2028 char buffer[2]; 2029 buffer[0] = (char) hfp_connection->ag_dtmf_code; 2030 buffer[1] = 0; 2031 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 2032 break; 2033 } 2034 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 2035 hfp_connection->command = HFP_CMD_NONE; 2036 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 2037 break; 2038 case HFP_CMD_TURN_OFF_EC_AND_NR: 2039 hfp_connection->command = HFP_CMD_NONE; 2040 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 2041 hfp_connection->ok_pending = 1; 2042 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 2043 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 2044 } else { 2045 hfp_connection->send_error = 1; 2046 } 2047 break; 2048 case HFP_CMD_CALL_ANSWERED: 2049 hfp_connection->command = HFP_CMD_NONE; 2050 log_info("HFP: ATA"); 2051 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 2052 break; 2053 case HFP_CMD_HANG_UP_CALL: 2054 hfp_connection->command = HFP_CMD_NONE; 2055 hfp_connection->ok_pending = 1; 2056 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 2057 break; 2058 case HFP_CMD_CALL_HOLD: { 2059 hfp_connection->command = HFP_CMD_NONE; 2060 hfp_connection->ok_pending = 1; 2061 2062 switch (hfp_connection->ag_call_hold_action){ 2063 case 0: 2064 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2065 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2066 break; 2067 case 1: 2068 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2069 // Where both a held and a waiting call exist, the above procedures shall apply to the 2070 // waiting call (i.e., not to the held call) in conflicting situation. 2071 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2072 break; 2073 case 2: 2074 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2075 // Where both a held and a waiting call exist, the above procedures shall apply to the 2076 // waiting call (i.e., not to the held call) in conflicting situation. 2077 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2078 break; 2079 case 3: 2080 // Adds a held call to the conversation. 2081 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2082 break; 2083 case 4: 2084 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2085 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2086 break; 2087 default: 2088 break; 2089 } 2090 hfp_connection->call_index = 0; 2091 break; 2092 } 2093 case HFP_CMD_CALL_PHONE_NUMBER: 2094 hfp_connection->command = HFP_CMD_NONE; 2095 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, hfp_connection); 2096 break; 2097 case HFP_CMD_REDIAL_LAST_NUMBER: 2098 hfp_connection->command = HFP_CMD_NONE; 2099 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2100 break; 2101 case HFP_CMD_ENABLE_CLIP: 2102 hfp_connection->command = HFP_CMD_NONE; 2103 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2104 hfp_connection->ok_pending = 1; 2105 break; 2106 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2107 hfp_connection->command = HFP_CMD_NONE; 2108 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2109 hfp_connection->ok_pending = 1; 2110 break; 2111 case HFP_CMD_SET_SPEAKER_GAIN: 2112 hfp_connection->command = HFP_CMD_NONE; 2113 hfp_connection->ok_pending = 1; 2114 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2115 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2116 break; 2117 case HFP_CMD_SET_MICROPHONE_GAIN: 2118 hfp_connection->command = HFP_CMD_NONE; 2119 hfp_connection->ok_pending = 1; 2120 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2121 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2122 break; 2123 default: 2124 break; 2125 } 2126 } 2127 } 2128 2129 static void hfp_ag_run(void){ 2130 btstack_linked_list_iterator_t it; 2131 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2132 while (btstack_linked_list_iterator_has_next(&it)){ 2133 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2134 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2135 hfp_ag_run_for_context(hfp_connection); 2136 } 2137 } 2138 2139 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2140 switch (packet_type){ 2141 case RFCOMM_DATA_PACKET: 2142 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 2143 break; 2144 case HCI_EVENT_PACKET: 2145 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2146 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2147 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2148 return; 2149 } 2150 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2151 break; 2152 default: 2153 break; 2154 } 2155 2156 hfp_ag_run(); 2157 } 2158 2159 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2160 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2161 hfp_ag_run(); 2162 } 2163 2164 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2165 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2166 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2167 return; 2168 } 2169 int i; 2170 hfp_codecs_nr = codecs_nr; 2171 for (i=0; i < codecs_nr; i++){ 2172 hfp_codecs[i] = codecs[i]; 2173 } 2174 } 2175 2176 void hfp_ag_init_supported_features(uint32_t supported_features){ 2177 hfp_supported_features = supported_features; 2178 } 2179 2180 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2181 hfp_ag_indicators_nr = ag_indicators_nr; 2182 (void)memcpy(hfp_ag_indicators, ag_indicators, 2183 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2184 } 2185 2186 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2187 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2188 hfp_generic_status_indicators_nr = hf_indicators_nr; 2189 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2190 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2191 } 2192 2193 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2194 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2195 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2196 call_hold_services_nr * sizeof(char *)); 2197 } 2198 2199 2200 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2201 2202 hfp_init(); 2203 hfp_ag_call_hold_services_nr = 0; 2204 hfp_ag_response_and_hold_active = 0; 2205 hfp_ag_indicators_nr = 0; 2206 hfp_codecs_nr = 0; 2207 hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2208 subscriber_numbers = NULL; 2209 subscriber_numbers_count = 0; 2210 2211 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2212 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2213 2214 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2215 2216 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2217 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2218 2219 hfp_gsm_init(); 2220 } 2221 2222 void hfp_ag_deinit(void){ 2223 hfp_deinit(); 2224 hfp_gsm_deinit(); 2225 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2226 (void) memset(&hfp_ag_callback, 0, sizeof(btstack_packet_handler_t)); 2227 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2228 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2229 } 2230 2231 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2232 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2233 } 2234 2235 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2236 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2237 if (!hfp_connection){ 2238 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2239 return; 2240 } 2241 hfp_release_service_level_connection(hfp_connection); 2242 hfp_ag_run_for_context(hfp_connection); 2243 } 2244 2245 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2246 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2247 if (!hfp_connection){ 2248 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2249 return; 2250 } 2251 hfp_connection->extended_audio_gateway_error = 0; 2252 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2253 return; 2254 } 2255 hfp_connection->extended_audio_gateway_error = error; 2256 hfp_ag_run_for_context(hfp_connection); 2257 } 2258 2259 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2260 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2261 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2262 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2263 2264 hfp_connection->establish_audio_connection = 1; 2265 if (!has_codec_negotiation_feature(hfp_connection)){ 2266 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2267 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2268 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2269 // now, pick link settings 2270 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2271 #ifdef ENABLE_CC256X_ASSISTED_HFP 2272 hfp_cc256x_prepare_for_sco(hfp_connection); 2273 #endif 2274 return; 2275 } 2276 2277 uint8_t i; 2278 bool codec_was_in_use = false; 2279 bool better_codec_can_be_used = false; 2280 2281 for (i = 0; i<hfp_connection->remote_codecs_nr; i++){ 2282 if (hfp_connection->negotiated_codec == hfp_connection->remote_codecs[i]){ 2283 codec_was_in_use = true; 2284 } else if (hfp_connection->negotiated_codec < hfp_connection->remote_codecs[i]){ 2285 better_codec_can_be_used = true; 2286 } 2287 } 2288 2289 if (!codec_was_in_use || better_codec_can_be_used){ 2290 hfp_connection->trigger_codec_exchange = 1; 2291 hfp_connection->codecs_state = HFP_CODECS_IDLE; 2292 } 2293 } 2294 2295 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2296 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2297 if (!hfp_connection){ 2298 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2299 return; 2300 } 2301 2302 hfp_connection->establish_audio_connection = 0; 2303 hfp_ag_setup_audio_connection(hfp_connection); 2304 hfp_ag_run_for_context(hfp_connection); 2305 } 2306 2307 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2308 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2309 if (!hfp_connection){ 2310 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2311 return; 2312 } 2313 hfp_release_audio_connection(hfp_connection); 2314 hfp_ag_run_for_context(hfp_connection); 2315 } 2316 2317 /** 2318 * @brief Enable in-band ring tone 2319 */ 2320 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2321 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2322 return; 2323 } 2324 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2325 2326 btstack_linked_list_iterator_t it; 2327 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2328 while (btstack_linked_list_iterator_has_next(&it)){ 2329 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2330 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2331 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2332 hfp_ag_run_for_context(hfp_connection); 2333 } 2334 } 2335 2336 /** 2337 * @brief Called from GSM 2338 */ 2339 void hfp_ag_incoming_call(void){ 2340 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2341 } 2342 2343 void hfp_ag_outgoing_call_initiated(const char * number) { 2344 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, NULL); 2345 } 2346 2347 /** 2348 * @brief number is stored. 2349 */ 2350 void hfp_ag_set_clip(uint8_t type, const char * number){ 2351 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2352 } 2353 2354 void hfp_ag_call_dropped(void){ 2355 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2356 } 2357 2358 // call from AG UI 2359 void hfp_ag_answer_incoming_call(void){ 2360 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2361 } 2362 2363 void hfp_ag_join_held_call(void){ 2364 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2365 } 2366 2367 void hfp_ag_terminate_call(void){ 2368 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2369 } 2370 2371 void hfp_ag_outgoing_call_ringing(void){ 2372 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2373 } 2374 2375 void hfp_ag_outgoing_call_established(void){ 2376 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2377 } 2378 2379 void hfp_ag_outgoing_call_rejected(void){ 2380 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2381 } 2382 2383 void hfp_ag_outgoing_call_accepted(void){ 2384 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2385 } 2386 2387 void hfp_ag_hold_incoming_call(void){ 2388 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2389 } 2390 2391 void hfp_ag_accept_held_incoming_call(void) { 2392 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2393 } 2394 2395 void hfp_ag_reject_held_incoming_call(void){ 2396 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2397 } 2398 2399 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2400 int indicator_index = get_ag_indicator_index_for_name(name); 2401 if (indicator_index < 0) return; 2402 hfp_ag_indicators[indicator_index].status = value; 2403 2404 btstack_linked_list_iterator_t it; 2405 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2406 while (btstack_linked_list_iterator_has_next(&it)){ 2407 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2408 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2409 if (!hfp_connection->ag_indicators[indicator_index].enabled) { 2410 log_info("Requested AG indicator '%s' update to %u, but it is not enabled", hfp_ag_indicators[indicator_index].name, value); 2411 continue; 2412 } 2413 log_info("AG indicator '%s' changed to %u, request transfer status", hfp_ag_indicators[indicator_index].name, value); 2414 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2415 hfp_ag_run_for_context(hfp_connection); 2416 } 2417 } 2418 2419 void hfp_ag_set_registration_status(int status){ 2420 if ( (status == 0) && (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 2421 2422 // if network goes away wihle a call is active: 2423 // - the call gets dropped 2424 // - we send NO CARRIER 2425 // NOTE: the CALL=0 has to be sent before NO CARRIER 2426 2427 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2428 2429 btstack_linked_list_iterator_t it; 2430 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2431 while (btstack_linked_list_iterator_has_next(&it)){ 2432 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2433 hfp_connection->ag_send_no_carrier = true; 2434 } 2435 } 2436 hfp_ag_set_ag_indicator("service", status); 2437 } 2438 2439 void hfp_ag_set_signal_strength(int strength){ 2440 hfp_ag_set_ag_indicator("signal", strength); 2441 } 2442 2443 void hfp_ag_set_roaming_status(int status){ 2444 hfp_ag_set_ag_indicator("roam", status); 2445 } 2446 2447 void hfp_ag_set_battery_level(int level){ 2448 hfp_ag_set_ag_indicator("battchg", level); 2449 } 2450 2451 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2452 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2453 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2454 if (!hfp_connection){ 2455 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2456 return; 2457 } 2458 2459 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2460 log_info("AG cannot acivate voice recognition - not supported by HF"); 2461 return; 2462 } 2463 2464 hfp_connection->ag_activate_voice_recognition = activate; 2465 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2466 hfp_ag_run_for_context(hfp_connection); 2467 } 2468 2469 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2470 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2471 if (!hfp_connection){ 2472 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2473 return; 2474 } 2475 if (hfp_connection->microphone_gain != gain){ 2476 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2477 hfp_connection->microphone_gain = gain; 2478 hfp_connection->send_microphone_gain = 1; 2479 } 2480 hfp_ag_run_for_context(hfp_connection); 2481 } 2482 2483 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2484 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2485 if (!hfp_connection){ 2486 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2487 return; 2488 } 2489 if (hfp_connection->speaker_gain != gain){ 2490 hfp_connection->speaker_gain = gain; 2491 hfp_connection->send_speaker_gain = 1; 2492 } 2493 hfp_ag_run_for_context(hfp_connection); 2494 } 2495 2496 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2497 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2498 if (!hfp_connection){ 2499 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2500 return; 2501 } 2502 hfp_ag_set_clip(0, number); 2503 hfp_connection->send_phone_number_for_voice_tag = 1; 2504 } 2505 2506 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2507 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2508 if (!hfp_connection){ 2509 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2510 return; 2511 } 2512 hfp_connection->send_error = 1; 2513 } 2514 2515 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2516 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2517 if (!hfp_connection){ 2518 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2519 return; 2520 } 2521 hfp_connection->ok_pending = 1; 2522 } 2523 2524 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2525 subscriber_numbers = numbers; 2526 subscriber_numbers_count = numbers_count; 2527 } 2528 2529 void hfp_ag_clear_last_dialed_number(void){ 2530 hfp_gsm_clear_last_dialed_number(); 2531 } 2532 2533 void hfp_ag_set_last_dialed_number(const char * number){ 2534 hfp_gsm_set_last_dialed_number(number); 2535 } 2536 2537 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2538 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2539 if (!hfp_connection){ 2540 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2541 return; 2542 } 2543 if (!hfp_connection->call_waiting_notification_enabled) return; 2544 2545 hfp_connection->ag_notify_incoming_call_waiting = 1; 2546 hfp_ag_run_for_context(hfp_connection); 2547 } 2548 2549 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){ 2550 if (!name){ 2551 name = default_hfp_ag_service_name; 2552 } 2553 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2554 2555 /* 2556 * 0x01 – Ability to reject a call 2557 * 0x00 – No ability to reject a call 2558 */ 2559 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2560 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2561 2562 // Construct SupportedFeatures for SDP bitmap: 2563 // 2564 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2565 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2566 // 2567 // Wide band speech (bit 5) requires Codec negotiation 2568 // 2569 uint16_t sdp_features = supported_features & 0x1f; 2570 if (wide_band_speech && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2571 sdp_features |= 1 << 5; 2572 } 2573 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2574 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2575 } 2576 2577 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2578 if (callback == NULL){ 2579 log_error("hfp_ag_register_packet_handler called with NULL callback"); 2580 return; 2581 } 2582 hfp_ag_callback = callback; 2583 hfp_set_ag_callback(callback); 2584 } 2585