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 callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1162 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1163 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1164 1165 switch (event){ 1166 case HFP_AG_INCOMING_CALL: 1167 switch (hfp_gsm_call_status()){ 1168 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1169 switch (hfp_gsm_callsetup_status()){ 1170 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1171 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1172 hfp_ag_set_callsetup_indicator(); 1173 hfp_ag_trigger_incoming_call(); 1174 log_info("AG rings"); 1175 break; 1176 default: 1177 break; 1178 } 1179 break; 1180 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1181 switch (hfp_gsm_callsetup_status()){ 1182 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1183 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1184 hfp_ag_set_callsetup_indicator(); 1185 hfp_ag_trigger_incoming_call(); 1186 log_info("AG call waiting"); 1187 break; 1188 default: 1189 break; 1190 } 1191 break; 1192 default: 1193 break; 1194 } 1195 break; 1196 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1197 switch (hfp_gsm_call_status()){ 1198 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1199 switch (hfp_gsm_callsetup_status()){ 1200 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1201 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1202 hfp_ag_set_call_indicator(); 1203 hfp_ag_set_callsetup_indicator(); 1204 hfp_ag_ag_accept_call(); 1205 log_info("AG answers call, accept call by GSM"); 1206 break; 1207 default: 1208 break; 1209 } 1210 break; 1211 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1212 switch (hfp_gsm_callsetup_status()){ 1213 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1214 log_info("AG: current call is placed on hold, incoming call gets active"); 1215 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1216 hfp_ag_set_callsetup_indicator(); 1217 hfp_ag_set_callheld_indicator(); 1218 hfp_ag_transfer_callsetup_state(); 1219 hfp_ag_transfer_callheld_state(); 1220 break; 1221 default: 1222 break; 1223 } 1224 break; 1225 default: 1226 break; 1227 } 1228 break; 1229 1230 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1231 switch (hfp_gsm_call_status()){ 1232 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1233 switch (hfp_gsm_callheld_status()){ 1234 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1235 log_info("AG: joining held call with active call"); 1236 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1237 hfp_ag_set_callheld_indicator(); 1238 hfp_ag_transfer_callheld_state(); 1239 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1240 break; 1241 default: 1242 break; 1243 } 1244 break; 1245 default: 1246 break; 1247 } 1248 break; 1249 1250 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1251 switch (hfp_gsm_call_status()){ 1252 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1253 switch (hfp_gsm_callsetup_status()){ 1254 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1255 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1256 hfp_ag_set_callsetup_indicator(); 1257 hfp_ag_set_call_indicator(); 1258 hfp_ag_hf_accept_call(hfp_connection); 1259 hfp_connection->ok_pending = 1; 1260 log_info("HF answers call, accept call by GSM"); 1261 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1262 break; 1263 default: 1264 break; 1265 } 1266 break; 1267 default: 1268 break; 1269 } 1270 break; 1271 1272 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1273 switch (hfp_gsm_call_status()){ 1274 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1275 switch (hfp_gsm_callsetup_status()){ 1276 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1277 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1278 hfp_ag_response_and_hold_active = 1; 1279 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1280 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1281 // as with regualr call 1282 hfp_ag_set_call_indicator(); 1283 hfp_ag_set_callsetup_indicator(); 1284 hfp_ag_ag_accept_call(); 1285 log_info("AG response and hold - hold by AG"); 1286 break; 1287 default: 1288 break; 1289 } 1290 break; 1291 default: 1292 break; 1293 } 1294 break; 1295 1296 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1297 switch (hfp_gsm_call_status()){ 1298 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1299 switch (hfp_gsm_callsetup_status()){ 1300 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1301 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1302 hfp_ag_response_and_hold_active = 1; 1303 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1304 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1305 // as with regualr call 1306 hfp_ag_set_call_indicator(); 1307 hfp_ag_set_callsetup_indicator(); 1308 hfp_ag_hf_accept_call(hfp_connection); 1309 log_info("AG response and hold - hold by HF"); 1310 break; 1311 default: 1312 break; 1313 } 1314 break; 1315 default: 1316 break; 1317 } 1318 break; 1319 1320 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1321 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1322 if (!hfp_ag_response_and_hold_active) break; 1323 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1324 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1325 hfp_ag_response_and_hold_active = 0; 1326 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1327 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1328 log_info("Held Call accepted and active"); 1329 break; 1330 1331 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1332 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1333 if (!hfp_ag_response_and_hold_active) break; 1334 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1335 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1336 hfp_ag_response_and_hold_active = 0; 1337 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1338 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1339 // from terminate by ag 1340 hfp_ag_set_call_indicator(); 1341 hfp_ag_trigger_terminate_call(); 1342 break; 1343 1344 case HFP_AG_TERMINATE_CALL_BY_HF: 1345 switch (hfp_gsm_call_status()){ 1346 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1347 switch (hfp_gsm_callsetup_status()){ 1348 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1349 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1350 hfp_ag_set_callsetup_indicator(); 1351 hfp_ag_transfer_callsetup_state(); 1352 hfp_ag_trigger_reject_call(); 1353 log_info("HF Rejected Incoming call, AG terminate call"); 1354 break; 1355 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1356 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1357 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1358 hfp_ag_set_callsetup_indicator(); 1359 hfp_ag_transfer_callsetup_state(); 1360 log_info("AG terminate outgoing call process"); 1361 break; 1362 default: 1363 break; 1364 } 1365 break; 1366 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1367 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1368 hfp_ag_set_callsetup_indicator(); 1369 hfp_ag_set_call_indicator(); 1370 hfp_ag_trigger_terminate_call(); 1371 log_info("AG terminate call"); 1372 break; 1373 default: 1374 break; 1375 } 1376 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1377 break; 1378 1379 case HFP_AG_TERMINATE_CALL_BY_AG: 1380 switch (hfp_gsm_call_status()){ 1381 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1382 switch (hfp_gsm_callsetup_status()){ 1383 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1384 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1385 hfp_ag_set_callsetup_indicator(); 1386 hfp_ag_trigger_reject_call(); 1387 log_info("AG Rejected Incoming call, AG terminate call"); 1388 break; 1389 default: 1390 break; 1391 } 1392 break; 1393 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1394 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1395 hfp_ag_set_callsetup_indicator(); 1396 hfp_ag_set_call_indicator(); 1397 hfp_ag_trigger_terminate_call(); 1398 log_info("AG terminate call"); 1399 break; 1400 default: 1401 break; 1402 } 1403 break; 1404 case HFP_AG_CALL_DROPPED: 1405 switch (hfp_gsm_call_status()){ 1406 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1407 switch (hfp_gsm_callsetup_status()){ 1408 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1409 hfp_ag_stop_ringing(); 1410 log_info("Incoming call interrupted"); 1411 break; 1412 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1413 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1414 log_info("Outgoing call interrupted\n"); 1415 log_info("AG notify call dropped\n"); 1416 break; 1417 default: 1418 break; 1419 } 1420 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1421 hfp_ag_set_callsetup_indicator(); 1422 hfp_ag_transfer_callsetup_state(); 1423 hfp_ag_trigger_terminate_call(); 1424 break; 1425 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1426 if (hfp_ag_response_and_hold_active) { 1427 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1428 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1429 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1430 } 1431 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1432 hfp_ag_set_callsetup_indicator(); 1433 hfp_ag_set_call_indicator(); 1434 hfp_ag_trigger_terminate_call(); 1435 log_info("AG notify call dropped"); 1436 break; 1437 default: 1438 break; 1439 } 1440 break; 1441 1442 case HFP_AG_OUTGOING_CALL_INITIATED_BY_HF: 1443 // directly reject call if number of free slots is exceeded 1444 if (!hfp_gsm_call_possible()){ 1445 hfp_connection->send_error = 1; 1446 hfp_ag_run_for_context(hfp_connection); 1447 break; 1448 } 1449 1450 // note: number not used currently 1451 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1452 1453 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1454 1455 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1456 break; 1457 1458 case HFP_AG_OUTGOING_CALL_INITIATED_BY_AG: 1459 // directly reject call if number of free slots is exceeded 1460 if (!hfp_gsm_call_possible()) { 1461 // TODO: no error for user 1462 break; 1463 } 1464 switch (hfp_gsm_call_status()) { 1465 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1466 switch (hfp_gsm_callsetup_status()) { 1467 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1468 // note: number not used currently 1469 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, 0, 0, "1234567"); 1470 // init call state for all connections 1471 hfp_ag_trigger_outgoing_call(); 1472 // get first one and accept call 1473 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1474 if (hfp_connection) { 1475 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1476 } 1477 break; 1478 default: 1479 // TODO: no error for user 1480 break; 1481 } 1482 break; 1483 default: 1484 // TODO: no error for user 1485 break; 1486 } 1487 break; 1488 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1489 // directly reject call if number of free slots is exceeded 1490 if (!hfp_gsm_call_possible()){ 1491 hfp_connection->send_error = 1; 1492 hfp_ag_run_for_context(hfp_connection); 1493 break; 1494 } 1495 1496 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1497 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1498 1499 log_info("Redial last number"); 1500 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1501 1502 if (strlen(last_dialed_number) > 0){ 1503 log_info("Last number exists: accept call"); 1504 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1505 } else { 1506 log_info("log_infoLast number missing: reject call"); 1507 hfp_ag_handle_reject_outgoing_call(); 1508 } 1509 break; 1510 } 1511 case HFP_AG_OUTGOING_CALL_REJECTED: 1512 hfp_ag_handle_reject_outgoing_call(); 1513 break; 1514 1515 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1516 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1517 if (!hfp_connection){ 1518 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1519 break; 1520 } 1521 1522 hfp_connection->ok_pending = 1; 1523 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1524 break; 1525 } 1526 case HFP_AG_OUTGOING_CALL_RINGING: 1527 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1528 if (!hfp_connection){ 1529 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1530 break; 1531 } 1532 1533 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1534 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1535 hfp_ag_set_callsetup_indicator(); 1536 hfp_ag_transfer_callsetup_state(); 1537 break; 1538 1539 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1540 // get outgoing call 1541 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1542 if (!hfp_connection){ 1543 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1544 } 1545 if (!hfp_connection){ 1546 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1547 break; 1548 } 1549 1550 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1551 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1552 hfp_connection->call_state = HFP_CALL_ACTIVE; 1553 hfp_ag_set_callsetup_indicator(); 1554 hfp_ag_set_call_indicator(); 1555 hfp_ag_transfer_call_state(); 1556 hfp_ag_transfer_callsetup_state(); 1557 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1558 hfp_ag_set_callheld_indicator(); 1559 hfp_ag_transfer_callheld_state(); 1560 } 1561 break; 1562 } 1563 1564 case HFP_AG_CALL_HOLD_USER_BUSY: 1565 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1566 hfp_ag_set_callsetup_indicator(); 1567 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1568 hfp_connection->call_state = HFP_CALL_ACTIVE; 1569 log_info("AG: Call Waiting, User Busy"); 1570 break; 1571 1572 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1573 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1574 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1575 1576 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1577 if (call_held || call_setup_in_progress){ 1578 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1579 0, NULL); 1580 1581 } 1582 1583 if (call_setup_in_progress){ 1584 log_info("AG: Call Dropped, Accept new call"); 1585 hfp_ag_set_callsetup_indicator(); 1586 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1587 } else { 1588 log_info("AG: Call Dropped, Resume held call"); 1589 } 1590 if (call_held){ 1591 hfp_ag_set_callheld_indicator(); 1592 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1593 } 1594 1595 hfp_connection->call_state = HFP_CALL_ACTIVE; 1596 break; 1597 } 1598 1599 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1600 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1601 // only update if callsetup changed 1602 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1603 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1604 NULL); 1605 1606 if (call_setup_in_progress){ 1607 log_info("AG: Call on Hold, Accept new call"); 1608 hfp_ag_set_callsetup_indicator(); 1609 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1610 } else { 1611 log_info("AG: Swap calls"); 1612 } 1613 1614 hfp_ag_set_callheld_indicator(); 1615 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1616 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1617 hfp_connection->call_state = HFP_CALL_ACTIVE; 1618 break; 1619 } 1620 1621 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1622 // Adds a held call to the conversation. 1623 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1624 log_info("AG: Join 3-way-call"); 1625 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1626 hfp_ag_set_callheld_indicator(); 1627 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1628 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1629 } 1630 hfp_connection->call_state = HFP_CALL_ACTIVE; 1631 break; 1632 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1633 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1634 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1635 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1636 hfp_ag_set_call_indicator(); 1637 hfp_ag_set_callheld_indicator(); 1638 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1639 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1640 hfp_connection->call_state = HFP_CALL_IDLE; 1641 break; 1642 1643 default: 1644 break; 1645 } 1646 1647 1648 } 1649 1650 1651 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1652 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1653 if (!active_call) return; 1654 1655 int idx = active_call->index; 1656 hfp_enhanced_call_dir_t dir = active_call->direction; 1657 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1658 hfp_enhanced_call_mode_t mode = active_call->mode; 1659 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1660 uint8_t type = active_call->clip_type; 1661 char * number = active_call->clip_number; 1662 1663 char buffer[100]; 1664 // TODO: check length of a buffer, to fit the MTU 1665 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1666 if (number){ 1667 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1668 } 1669 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1670 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, 1671 mode, mpty, type, number); 1672 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1673 } 1674 1675 1676 // sends pending command, returns if command was sent 1677 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1678 1679 if (hfp_connection->send_status_of_current_calls){ 1680 hfp_connection->ok_pending = 0; 1681 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1682 hfp_connection->next_call_index++; 1683 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1684 return 1; 1685 } else { 1686 // 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 1687 hfp_connection->next_call_index = 0; 1688 hfp_connection->ok_pending = 1; 1689 hfp_connection->send_status_of_current_calls = 0; 1690 } 1691 } 1692 1693 if (hfp_connection->ag_notify_incoming_call_waiting){ 1694 hfp_connection->ag_notify_incoming_call_waiting = 0; 1695 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1696 return 1; 1697 } 1698 1699 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1700 hfp_connection->ok_pending = 0; 1701 hfp_connection->send_error = 0; 1702 hfp_connection->command = HFP_CMD_NONE; 1703 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1704 return 1; 1705 } 1706 1707 if (hfp_connection->send_error){ 1708 hfp_connection->send_error = 0; 1709 hfp_connection->command = HFP_CMD_NONE; 1710 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1711 return 1; 1712 } 1713 1714 // note: before update AG indicators and ok_pending 1715 if (hfp_connection->send_response_and_hold_status){ 1716 int status = hfp_connection->send_response_and_hold_status - 1; 1717 hfp_connection->send_response_and_hold_status = 0; 1718 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1719 return 1; 1720 } 1721 1722 if (hfp_connection->ok_pending){ 1723 hfp_connection->ok_pending = 0; 1724 hfp_connection->command = HFP_CMD_NONE; 1725 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1726 return 1; 1727 } 1728 1729 // update AG indicators 1730 if (hfp_connection->ag_indicators_status_update_bitmap){ 1731 int i; 1732 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1733 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1734 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1735 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1736 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1737 break; 1738 } 1739 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1740 return 1; 1741 } 1742 } 1743 } 1744 1745 if (hfp_connection->ag_send_no_carrier){ 1746 hfp_connection->ag_send_no_carrier = false; 1747 hfp_ag_send_no_carrier(hfp_connection->rfcomm_cid); 1748 return 1; 1749 } 1750 1751 if (hfp_connection->ag_ring){ 1752 hfp_connection->ag_ring = 0; 1753 hfp_connection->command = HFP_CMD_NONE; 1754 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1755 return 1; 1756 } 1757 1758 if (hfp_connection->ag_send_clip){ 1759 hfp_connection->ag_send_clip = 0; 1760 hfp_connection->command = HFP_CMD_NONE; 1761 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1762 return 1; 1763 } 1764 1765 if (hfp_connection->send_phone_number_for_voice_tag){ 1766 hfp_connection->send_phone_number_for_voice_tag = 0; 1767 hfp_connection->command = HFP_CMD_NONE; 1768 hfp_connection->ok_pending = 1; 1769 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1770 return 1; 1771 } 1772 1773 if (hfp_connection->send_subscriber_number){ 1774 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1775 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1776 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1777 } else { 1778 hfp_connection->send_subscriber_number = 0; 1779 hfp_connection->next_subscriber_number_to_send = 0; 1780 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1781 } 1782 hfp_connection->command = HFP_CMD_NONE; 1783 return 1; 1784 } 1785 1786 if (hfp_connection->send_microphone_gain){ 1787 hfp_connection->send_microphone_gain = 0; 1788 hfp_connection->command = HFP_CMD_NONE; 1789 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1790 return 1; 1791 } 1792 1793 if (hfp_connection->send_speaker_gain){ 1794 hfp_connection->send_speaker_gain = 0; 1795 hfp_connection->command = HFP_CMD_NONE; 1796 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1797 return 1; 1798 } 1799 1800 if (hfp_connection->send_ag_status_indicators){ 1801 hfp_connection->send_ag_status_indicators = 0; 1802 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1803 return 1; 1804 } 1805 1806 return 0; 1807 } 1808 1809 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1810 1811 btstack_assert(hfp_connection != NULL); 1812 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1813 1814 // during SDP query, RFCOMM CID is not set 1815 if (hfp_connection->rfcomm_cid == 0) return; 1816 1817 // assert command could be sent 1818 if (hci_can_send_command_packet_now() == 0) return; 1819 1820 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 1821 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 1822 hfp_connection->release_audio_connection = 0; 1823 gap_disconnect(hfp_connection->sco_handle); 1824 return; 1825 } 1826 1827 #ifdef ENABLE_CC256X_ASSISTED_HFP 1828 // WBS Disassociate 1829 if (hfp_connection->cc256x_send_wbs_disassociate){ 1830 hfp_connection->cc256x_send_wbs_disassociate = false; 1831 hci_send_cmd(&hci_ti_wbs_disassociate); 1832 return; 1833 } 1834 // Write Codec Config 1835 if (hfp_connection->cc256x_send_write_codec_config){ 1836 hfp_connection->cc256x_send_write_codec_config = false; 1837 hfp_cc256x_write_codec_config(hfp_connection); 1838 return; 1839 } 1840 // WBS Associate 1841 if (hfp_connection->cc256x_send_wbs_associate){ 1842 hfp_connection->cc256x_send_wbs_associate = false; 1843 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 1844 return; 1845 } 1846 #endif 1847 #ifdef ENABLE_BCM_PCM_WBS 1848 // Enable WBS 1849 if (hfp_connection->bcm_send_enable_wbs){ 1850 hfp_connection->bcm_send_enable_wbs = false; 1851 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 1852 return; 1853 } 1854 // Write I2S/PCM params 1855 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 1856 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 1857 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 1858 return; 1859 } 1860 // Disable WBS 1861 if (hfp_connection->bcm_send_disable_wbs){ 1862 hfp_connection->bcm_send_disable_wbs = false; 1863 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 1864 return; 1865 } 1866 #endif 1867 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 1868 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 1869 hfp_finalize_connection_context(hfp_connection); 1870 return; 1871 } 1872 #endif 1873 1874 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1875 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1876 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1877 return; 1878 } 1879 1880 int cmd_sent = hfp_ag_send_commands(hfp_connection); 1881 1882 if (!cmd_sent){ 1883 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1884 } 1885 1886 if (!cmd_sent){ 1887 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1888 } 1889 1890 if (!cmd_sent){ 1891 cmd_sent = call_setup_state_machine(hfp_connection); 1892 } 1893 1894 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 1895 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 1896 switch (hfp_connection->codecs_state){ 1897 case HFP_CODECS_IDLE: 1898 case HFP_CODECS_RECEIVED_LIST: 1899 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1900 case HFP_CODECS_ERROR: 1901 hfp_connection->trigger_codec_exchange = 0; 1902 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1903 break; 1904 default: 1905 break; 1906 } 1907 } 1908 1909 if (!cmd_sent){ 1910 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1911 } 1912 1913 1914 // disconnect 1915 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 1916 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1917 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1918 } 1919 1920 if (cmd_sent){ 1921 hfp_connection->command = HFP_CMD_NONE; 1922 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1923 } 1924 } 1925 1926 static int hfp_parser_is_end_of_line(uint8_t byte){ 1927 return (byte == '\n') || (byte == '\r'); 1928 } 1929 1930 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1931 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1932 1933 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1934 if (size < 1) return; 1935 1936 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1937 if (!hfp_connection) return; 1938 1939 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 1940 #ifdef ENABLE_HFP_AT_MESSAGES 1941 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1942 #endif 1943 1944 // process messages byte-wise 1945 int pos; 1946 for (pos = 0; pos < size ; pos++){ 1947 hfp_parse(hfp_connection, packet[pos], 0); 1948 1949 // parse until end of line 1950 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1951 1952 hfp_generic_status_indicator_t * indicator; 1953 switch(hfp_connection->command){ 1954 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1955 if (hfp_ag_response_and_hold_active){ 1956 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1957 } 1958 hfp_connection->ok_pending = 1; 1959 break; 1960 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1961 switch(hfp_connection->ag_response_and_hold_action){ 1962 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1963 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1964 break; 1965 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1966 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1967 break; 1968 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1969 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1970 break; 1971 default: 1972 break; 1973 } 1974 hfp_connection->ok_pending = 1; 1975 break; 1976 case HFP_CMD_HF_INDICATOR_STATUS: 1977 hfp_connection->command = HFP_CMD_NONE; 1978 if (hfp_connection->parser_indicator_index < hfp_generic_status_indicators_nr){ 1979 indicator = &hfp_generic_status_indicators[hfp_connection->parser_indicator_index]; 1980 } else { 1981 hfp_connection->send_error = 1; 1982 break; 1983 } 1984 switch (indicator->uuid){ 1985 case 1: // enhanced security 1986 if (hfp_connection->parser_indicator_value > 1) { 1987 hfp_connection->send_error = 1; 1988 return; 1989 } 1990 log_info("HF Indicator 'enhanced security' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1991 break; 1992 case 2: // battery level 1993 if (hfp_connection->parser_indicator_value > 100){ 1994 hfp_connection->send_error = 1; 1995 return; 1996 } 1997 log_info("HF Indicator 'battery' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1998 break; 1999 default: 2000 log_info("HF Indicator unknown set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2001 break; 2002 } 2003 hfp_connection->ok_pending = 1; 2004 break; 2005 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 2006 // expected by SLC state machine 2007 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 2008 hfp_connection->send_ag_indicators_segment = 0; 2009 hfp_connection->send_ag_status_indicators = 1; 2010 break; 2011 case HFP_CMD_LIST_CURRENT_CALLS: 2012 hfp_connection->command = HFP_CMD_NONE; 2013 hfp_connection->next_call_index = 0; 2014 hfp_connection->send_status_of_current_calls = 1; 2015 break; 2016 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 2017 if (subscriber_numbers_count == 0){ 2018 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2019 break; 2020 } 2021 hfp_connection->next_subscriber_number_to_send = 0; 2022 hfp_connection->send_subscriber_number = 1; 2023 break; 2024 case HFP_CMD_TRANSMIT_DTMF_CODES: 2025 { 2026 hfp_connection->command = HFP_CMD_NONE; 2027 char buffer[2]; 2028 buffer[0] = (char) hfp_connection->ag_dtmf_code; 2029 buffer[1] = 0; 2030 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 2031 break; 2032 } 2033 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 2034 hfp_connection->command = HFP_CMD_NONE; 2035 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 2036 break; 2037 case HFP_CMD_TURN_OFF_EC_AND_NR: 2038 hfp_connection->command = HFP_CMD_NONE; 2039 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 2040 hfp_connection->ok_pending = 1; 2041 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 2042 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 2043 } else { 2044 hfp_connection->send_error = 1; 2045 } 2046 break; 2047 case HFP_CMD_CALL_ANSWERED: 2048 hfp_connection->command = HFP_CMD_NONE; 2049 log_info("HFP: ATA"); 2050 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 2051 break; 2052 case HFP_CMD_HANG_UP_CALL: 2053 hfp_connection->command = HFP_CMD_NONE; 2054 hfp_connection->ok_pending = 1; 2055 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 2056 break; 2057 case HFP_CMD_CALL_HOLD: { 2058 hfp_connection->command = HFP_CMD_NONE; 2059 hfp_connection->ok_pending = 1; 2060 2061 switch (hfp_connection->ag_call_hold_action){ 2062 case 0: 2063 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2064 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2065 break; 2066 case 1: 2067 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2068 // Where both a held and a waiting call exist, the above procedures shall apply to the 2069 // waiting call (i.e., not to the held call) in conflicting situation. 2070 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2071 break; 2072 case 2: 2073 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2074 // Where both a held and a waiting call exist, the above procedures shall apply to the 2075 // waiting call (i.e., not to the held call) in conflicting situation. 2076 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2077 break; 2078 case 3: 2079 // Adds a held call to the conversation. 2080 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2081 break; 2082 case 4: 2083 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2084 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2085 break; 2086 default: 2087 break; 2088 } 2089 hfp_connection->call_index = 0; 2090 break; 2091 } 2092 case HFP_CMD_CALL_PHONE_NUMBER: 2093 hfp_connection->command = HFP_CMD_NONE; 2094 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, hfp_connection); 2095 break; 2096 case HFP_CMD_REDIAL_LAST_NUMBER: 2097 hfp_connection->command = HFP_CMD_NONE; 2098 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2099 break; 2100 case HFP_CMD_ENABLE_CLIP: 2101 hfp_connection->command = HFP_CMD_NONE; 2102 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2103 hfp_connection->ok_pending = 1; 2104 break; 2105 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2106 hfp_connection->command = HFP_CMD_NONE; 2107 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2108 hfp_connection->ok_pending = 1; 2109 break; 2110 case HFP_CMD_SET_SPEAKER_GAIN: 2111 hfp_connection->command = HFP_CMD_NONE; 2112 hfp_connection->ok_pending = 1; 2113 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2114 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2115 break; 2116 case HFP_CMD_SET_MICROPHONE_GAIN: 2117 hfp_connection->command = HFP_CMD_NONE; 2118 hfp_connection->ok_pending = 1; 2119 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2120 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2121 break; 2122 default: 2123 break; 2124 } 2125 } 2126 } 2127 2128 static void hfp_ag_run(void){ 2129 btstack_linked_list_iterator_t it; 2130 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2131 while (btstack_linked_list_iterator_has_next(&it)){ 2132 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2133 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2134 hfp_ag_run_for_context(hfp_connection); 2135 } 2136 } 2137 2138 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2139 switch (packet_type){ 2140 case RFCOMM_DATA_PACKET: 2141 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 2142 break; 2143 case HCI_EVENT_PACKET: 2144 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2145 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2146 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2147 return; 2148 } 2149 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2150 break; 2151 default: 2152 break; 2153 } 2154 2155 hfp_ag_run(); 2156 } 2157 2158 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2159 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2160 hfp_ag_run(); 2161 } 2162 2163 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2164 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2165 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2166 return; 2167 } 2168 int i; 2169 hfp_codecs_nr = codecs_nr; 2170 for (i=0; i < codecs_nr; i++){ 2171 hfp_codecs[i] = codecs[i]; 2172 } 2173 } 2174 2175 void hfp_ag_init_supported_features(uint32_t supported_features){ 2176 hfp_supported_features = supported_features; 2177 } 2178 2179 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2180 hfp_ag_indicators_nr = ag_indicators_nr; 2181 (void)memcpy(hfp_ag_indicators, ag_indicators, 2182 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2183 } 2184 2185 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2186 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2187 hfp_generic_status_indicators_nr = hf_indicators_nr; 2188 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2189 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2190 } 2191 2192 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2193 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2194 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2195 call_hold_services_nr * sizeof(char *)); 2196 } 2197 2198 2199 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2200 2201 hfp_init(); 2202 hfp_ag_call_hold_services_nr = 0; 2203 hfp_ag_response_and_hold_active = 0; 2204 hfp_ag_indicators_nr = 0; 2205 hfp_codecs_nr = 0; 2206 hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2207 subscriber_numbers = NULL; 2208 subscriber_numbers_count = 0; 2209 2210 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2211 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2212 2213 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2214 2215 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2216 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2217 2218 hfp_gsm_init(); 2219 } 2220 2221 void hfp_ag_deinit(void){ 2222 hfp_deinit(); 2223 hfp_gsm_deinit(); 2224 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2225 (void) memset(&hfp_ag_callback, 0, sizeof(btstack_packet_handler_t)); 2226 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2227 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2228 } 2229 2230 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2231 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2232 } 2233 2234 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2235 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2236 if (!hfp_connection){ 2237 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2238 return; 2239 } 2240 hfp_release_service_level_connection(hfp_connection); 2241 hfp_ag_run_for_context(hfp_connection); 2242 } 2243 2244 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2245 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2246 if (!hfp_connection){ 2247 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2248 return; 2249 } 2250 hfp_connection->extended_audio_gateway_error = 0; 2251 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2252 return; 2253 } 2254 hfp_connection->extended_audio_gateway_error = error; 2255 hfp_ag_run_for_context(hfp_connection); 2256 } 2257 2258 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2259 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2260 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2261 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2262 2263 hfp_connection->establish_audio_connection = 1; 2264 if (!has_codec_negotiation_feature(hfp_connection)){ 2265 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2266 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2267 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2268 // now, pick link settings 2269 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2270 #ifdef ENABLE_CC256X_ASSISTED_HFP 2271 hfp_cc256x_prepare_for_sco(hfp_connection); 2272 #endif 2273 return; 2274 } 2275 2276 uint8_t i; 2277 bool codec_was_in_use = false; 2278 bool better_codec_can_be_used = false; 2279 2280 for (i = 0; i<hfp_connection->remote_codecs_nr; i++){ 2281 if (hfp_connection->negotiated_codec == hfp_connection->remote_codecs[i]){ 2282 codec_was_in_use = true; 2283 } else if (hfp_connection->negotiated_codec < hfp_connection->remote_codecs[i]){ 2284 better_codec_can_be_used = true; 2285 } 2286 } 2287 2288 if (!codec_was_in_use || better_codec_can_be_used){ 2289 hfp_connection->trigger_codec_exchange = 1; 2290 hfp_connection->codecs_state = HFP_CODECS_IDLE; 2291 } 2292 } 2293 2294 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2295 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2296 if (!hfp_connection){ 2297 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2298 return; 2299 } 2300 2301 hfp_connection->establish_audio_connection = 0; 2302 hfp_ag_setup_audio_connection(hfp_connection); 2303 hfp_ag_run_for_context(hfp_connection); 2304 } 2305 2306 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2307 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2308 if (!hfp_connection){ 2309 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2310 return; 2311 } 2312 hfp_release_audio_connection(hfp_connection); 2313 hfp_ag_run_for_context(hfp_connection); 2314 } 2315 2316 /** 2317 * @brief Enable in-band ring tone 2318 */ 2319 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2320 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2321 return; 2322 } 2323 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2324 2325 btstack_linked_list_iterator_t it; 2326 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2327 while (btstack_linked_list_iterator_has_next(&it)){ 2328 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2329 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2330 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2331 hfp_ag_run_for_context(hfp_connection); 2332 } 2333 } 2334 2335 /** 2336 * @brief Called from GSM 2337 */ 2338 void hfp_ag_incoming_call(void){ 2339 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2340 } 2341 2342 void hfp_ag_outgoing_call_initiated(const char * number) { 2343 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, NULL); 2344 } 2345 2346 /** 2347 * @brief number is stored. 2348 */ 2349 void hfp_ag_set_clip(uint8_t type, const char * number){ 2350 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2351 } 2352 2353 void hfp_ag_call_dropped(void){ 2354 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2355 } 2356 2357 // call from AG UI 2358 void hfp_ag_answer_incoming_call(void){ 2359 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2360 } 2361 2362 void hfp_ag_join_held_call(void){ 2363 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2364 } 2365 2366 void hfp_ag_terminate_call(void){ 2367 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2368 } 2369 2370 void hfp_ag_outgoing_call_ringing(void){ 2371 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2372 } 2373 2374 void hfp_ag_outgoing_call_established(void){ 2375 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2376 } 2377 2378 void hfp_ag_outgoing_call_rejected(void){ 2379 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2380 } 2381 2382 void hfp_ag_outgoing_call_accepted(void){ 2383 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2384 } 2385 2386 void hfp_ag_hold_incoming_call(void){ 2387 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2388 } 2389 2390 void hfp_ag_accept_held_incoming_call(void) { 2391 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2392 } 2393 2394 void hfp_ag_reject_held_incoming_call(void){ 2395 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2396 } 2397 2398 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2399 int indicator_index = get_ag_indicator_index_for_name(name); 2400 if (indicator_index < 0) return; 2401 hfp_ag_indicators[indicator_index].status = value; 2402 2403 btstack_linked_list_iterator_t it; 2404 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2405 while (btstack_linked_list_iterator_has_next(&it)){ 2406 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2407 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2408 if (!hfp_connection->ag_indicators[indicator_index].enabled) { 2409 log_info("Requested AG indicator '%s' update to %u, but it is not enabled", hfp_ag_indicators[indicator_index].name, value); 2410 continue; 2411 } 2412 log_info("AG indicator '%s' changed to %u, request transfer status", hfp_ag_indicators[indicator_index].name, value); 2413 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2414 hfp_ag_run_for_context(hfp_connection); 2415 } 2416 } 2417 2418 void hfp_ag_set_registration_status(int status){ 2419 if ( (status == 0) && (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 2420 2421 // if network goes away wihle a call is active: 2422 // - the call gets dropped 2423 // - we send NO CARRIER 2424 // NOTE: the CALL=0 has to be sent before NO CARRIER 2425 2426 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2427 2428 btstack_linked_list_iterator_t it; 2429 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2430 while (btstack_linked_list_iterator_has_next(&it)){ 2431 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2432 hfp_connection->ag_send_no_carrier = true; 2433 } 2434 } 2435 hfp_ag_set_ag_indicator("service", status); 2436 } 2437 2438 void hfp_ag_set_signal_strength(int strength){ 2439 hfp_ag_set_ag_indicator("signal", strength); 2440 } 2441 2442 void hfp_ag_set_roaming_status(int status){ 2443 hfp_ag_set_ag_indicator("roam", status); 2444 } 2445 2446 void hfp_ag_set_battery_level(int level){ 2447 hfp_ag_set_ag_indicator("battchg", level); 2448 } 2449 2450 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2451 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2452 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2453 if (!hfp_connection){ 2454 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2455 return; 2456 } 2457 2458 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2459 log_info("AG cannot acivate voice recognition - not supported by HF"); 2460 return; 2461 } 2462 2463 hfp_connection->ag_activate_voice_recognition = activate; 2464 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2465 hfp_ag_run_for_context(hfp_connection); 2466 } 2467 2468 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2469 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2470 if (!hfp_connection){ 2471 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2472 return; 2473 } 2474 if (hfp_connection->microphone_gain != gain){ 2475 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2476 hfp_connection->microphone_gain = gain; 2477 hfp_connection->send_microphone_gain = 1; 2478 } 2479 hfp_ag_run_for_context(hfp_connection); 2480 } 2481 2482 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2483 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2484 if (!hfp_connection){ 2485 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2486 return; 2487 } 2488 if (hfp_connection->speaker_gain != gain){ 2489 hfp_connection->speaker_gain = gain; 2490 hfp_connection->send_speaker_gain = 1; 2491 } 2492 hfp_ag_run_for_context(hfp_connection); 2493 } 2494 2495 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2496 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2497 if (!hfp_connection){ 2498 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2499 return; 2500 } 2501 hfp_ag_set_clip(0, number); 2502 hfp_connection->send_phone_number_for_voice_tag = 1; 2503 } 2504 2505 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2506 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2507 if (!hfp_connection){ 2508 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2509 return; 2510 } 2511 hfp_connection->send_error = 1; 2512 } 2513 2514 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2515 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2516 if (!hfp_connection){ 2517 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2518 return; 2519 } 2520 hfp_connection->ok_pending = 1; 2521 } 2522 2523 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2524 subscriber_numbers = numbers; 2525 subscriber_numbers_count = numbers_count; 2526 } 2527 2528 void hfp_ag_clear_last_dialed_number(void){ 2529 hfp_gsm_clear_last_dialed_number(); 2530 } 2531 2532 void hfp_ag_set_last_dialed_number(const char * number){ 2533 hfp_gsm_set_last_dialed_number(number); 2534 } 2535 2536 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2537 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2538 if (!hfp_connection){ 2539 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2540 return; 2541 } 2542 if (!hfp_connection->call_waiting_notification_enabled) return; 2543 2544 hfp_connection->ag_notify_incoming_call_waiting = 1; 2545 hfp_ag_run_for_context(hfp_connection); 2546 } 2547 2548 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){ 2549 if (!name){ 2550 name = default_hfp_ag_service_name; 2551 } 2552 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2553 2554 /* 2555 * 0x01 – Ability to reject a call 2556 * 0x00 – No ability to reject a call 2557 */ 2558 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2559 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2560 2561 // Construct SupportedFeatures for SDP bitmap: 2562 // 2563 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2564 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2565 // 2566 // Wide band speech (bit 5) requires Codec negotiation 2567 // 2568 uint16_t sdp_features = supported_features & 0x1f; 2569 if (wide_band_speech && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2570 sdp_features |= 1 << 5; 2571 } 2572 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2573 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2574 } 2575 2576 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2577 if (callback == NULL){ 2578 log_error("hfp_ag_register_packet_handler called with NULL callback"); 2579 return; 2580 } 2581 hfp_ag_callback = callback; 2582 hfp_set_ag_callback(callback); 2583 } 2584