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 void hfp_ag_emit_simple_event(uint8_t event_subtype){ 113 uint8_t event[3]; 114 event[0] = HCI_EVENT_HFP_META; 115 event[1] = sizeof(event) - 2; 116 event[2] = event_subtype; 117 if (!hfp_ag_callback) return; 118 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 119 } 120 121 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 122 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 123 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 124 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 125 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 126 } 127 return hfp_connection->ag_indicators_nr; 128 } 129 130 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 131 // TODO: save only value, and value changed in the hfp_connection? 132 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 133 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 134 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 135 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 136 } 137 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 138 } 139 140 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 141 int i; 142 for (i = 0; i < hfp_ag_indicators_nr; i++){ 143 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 144 return &hfp_ag_indicators[i]; 145 } 146 } 147 return NULL; 148 } 149 150 static int get_ag_indicator_index_for_name(const char * name){ 151 int i; 152 for (i = 0; i < hfp_ag_indicators_nr; i++){ 153 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 154 return i; 155 } 156 } 157 return -1; 158 } 159 160 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 161 btstack_linked_list_iterator_t it; 162 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 163 while (btstack_linked_list_iterator_has_next(&it)){ 164 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 165 if (hfp_connection->acl_handle != handle) continue; 166 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 167 return hfp_connection; 168 } 169 return NULL; 170 } 171 172 static int use_in_band_tone(void){ 173 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 174 } 175 176 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 177 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 178 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 179 return hf && ag; 180 } 181 182 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 183 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 184 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 185 return hf && ag; 186 } 187 188 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 189 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 190 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 191 return hf && ag; 192 } 193 194 /* unsolicited responses */ 195 196 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 197 char buffer[20]; 198 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", 199 HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 200 buffer[sizeof(buffer) - 1] = 0; 201 return send_str_over_rfcomm(cid, buffer); 202 } 203 204 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 205 char buffer[40]; 206 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n\r\nOK\r\n", 207 HFP_SUPPORTED_FEATURES, hfp_supported_features); 208 buffer[sizeof(buffer) - 1] = 0; 209 return send_str_over_rfcomm(cid, buffer); 210 } 211 212 static int hfp_ag_send_ok(uint16_t cid){ 213 char buffer[10]; 214 snprintf(buffer, sizeof(buffer), "\r\nOK\r\n"); 215 buffer[sizeof(buffer) - 1] = 0; 216 return send_str_over_rfcomm(cid, buffer); 217 } 218 219 static int hfp_ag_send_ring(uint16_t cid){ 220 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 221 } 222 223 static int hfp_ag_send_clip(uint16_t cid){ 224 char buffer[50]; 225 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, 226 hfp_gsm_clip_number(), hfp_gsm_clip_type()); 227 buffer[sizeof(buffer) - 1] = 0; 228 return send_str_over_rfcomm(cid, buffer); 229 } 230 231 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 232 char buffer[50]; 233 snprintf(buffer, sizeof(buffer), "\r\n%s: ,\"%s\",%u, , \r\n", 234 HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 235 buffer[sizeof(buffer) - 1] = 0; 236 return send_str_over_rfcomm(cid, buffer); 237 } 238 239 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 240 char buffer[50]; 241 snprintf(buffer, sizeof(buffer), "\r\n%s: %s\r\n", 242 HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 243 buffer[sizeof(buffer) - 1] = 0; 244 return send_str_over_rfcomm(cid, buffer); 245 } 246 247 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 248 char buffer[50]; 249 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", 250 HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), 251 hfp_gsm_clip_type()); 252 buffer[sizeof(buffer) - 1] = 0; 253 return send_str_over_rfcomm(cid, buffer); 254 } 255 256 static int hfp_ag_send_error(uint16_t cid){ 257 char buffer[10]; 258 snprintf(buffer, sizeof(buffer), "\r\nERROR\r\n"); 259 buffer[sizeof(buffer) - 1] = 0; 260 return send_str_over_rfcomm(cid, buffer); 261 } 262 263 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 264 char buffer[20]; 265 snprintf(buffer, sizeof(buffer), "\r\n%s=%d\r\n", 266 HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 267 buffer[sizeof(buffer) - 1] = 0; 268 return send_str_over_rfcomm(cid, buffer); 269 } 270 271 // get size for indicator string 272 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 273 // template: ("$NAME",($MIN,$MAX)) 274 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 275 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 276 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 277 } 278 279 // store indicator 280 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer, uint16_t buffer_size){ 281 snprintf((char *)buffer, buffer_size, "(\"%s\",(%d,%d)),", 282 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 283 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 284 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 285 ((char *)buffer)[buffer_size - 1] = 0; 286 } 287 288 // structure: header [indicator [comma indicator]] footer 289 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 290 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 291 if (!num_indicators) return 2; 292 return 3 + ((num_indicators-1) * 2); 293 } 294 295 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 296 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 297 if (index == 0) { 298 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 299 } 300 index--; 301 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 302 int indicator_index = index >> 1; 303 if ((index & 1) == 0){ 304 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 305 } 306 if (indicator_index == (num_indicators - 1)){ 307 return 8; // "\r\n\r\nOK\r\n" 308 } 309 return 1; // comma 310 } 311 312 static void hfp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer, uint16_t buffer_size){ 313 if (index == 0){ 314 *buffer++ = '\r'; 315 *buffer++ = '\n'; 316 int len = strlen(HFP_INDICATOR); 317 (void)memcpy(buffer, HFP_INDICATOR, len); 318 buffer += len; 319 *buffer++ = ':'; 320 return; 321 } 322 index--; 323 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 324 int indicator_index = index >> 1; 325 if ((index & 1) == 0){ 326 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer, buffer_size); 327 return; 328 } 329 if (indicator_index == (num_indicators-1)){ 330 (void)memcpy(buffer, "\r\n\r\nOK\r\n", 8); 331 return; 332 } 333 *buffer = ','; 334 } 335 336 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 337 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 338 int i; 339 int offset = 0; 340 for (i = 0; i < (hfp_generic_status_indicators_nr-1); i++) { 341 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 342 } 343 if (i < hfp_generic_status_indicators_nr){ 344 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_generic_status_indicators[i].uuid); 345 } 346 return offset; 347 } 348 349 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 350 if (buffer_size < (hfp_generic_status_indicators_nr * 3)) return 0; 351 int i; 352 int offset = 0; 353 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 354 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); 355 } 356 return offset; 357 } 358 359 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 360 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 361 int i; 362 int offset = 0; 363 for (i = 0; i < (hfp_ag_indicators_nr-1); i++) { 364 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 365 } 366 if (i<hfp_ag_indicators_nr){ 367 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 368 } 369 return offset; 370 } 371 372 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 373 if (buffer_size < (hfp_ag_call_hold_services_nr * 3)) return 0; 374 int i; 375 int offset = snprintf(buffer, buffer_size, "("); 376 for (i = 0; i < (hfp_ag_call_hold_services_nr-1); i++) { 377 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 378 } 379 if (i<hfp_ag_call_hold_services_nr){ 380 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 381 } 382 return offset; 383 } 384 385 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 386 int start_segment, int num_segments, 387 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 388 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer, uint16_t buffer_size)){ 389 390 // assumes: can send now == true 391 // assumes: num segments > 0 392 // assumes: individual segments are smaller than MTU 393 rfcomm_reserve_packet_buffer(); 394 int mtu = rfcomm_get_max_frame_size(cid); 395 uint8_t * data = rfcomm_get_outgoing_buffer(); 396 int offset = 0; 397 int segment = start_segment; 398 while (segment < num_segments){ 399 int segment_len = get_segment_len(hfp_connection, segment); 400 if ((offset + segment_len + 1) > mtu) break; 401 // append segment. As it appends a '\0', we provide a buffer one byte larger 402 store_segment(hfp_connection, segment, data+offset, segment_len + 1); 403 offset += segment_len; 404 segment++; 405 } 406 rfcomm_send_prepared(cid, offset); 407 #ifdef ENABLE_HFP_AT_MESSAGES 408 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_SENT, (char *) data); 409 #endif 410 return segment; 411 } 412 413 // returns next segment to store 414 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 415 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 416 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 417 hfp_ag_indicators_cmd_generator_get_segment_len, 418 hfp_ag_indicators_cmd_generator_store_segment); 419 } 420 421 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 422 char buffer[40]; 423 const int size = sizeof(buffer); 424 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 425 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 426 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 427 return send_str_over_rfcomm(cid, buffer); 428 } 429 430 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 431 char buffer[40]; 432 const int size = sizeof(buffer); 433 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 434 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 435 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 436 return send_str_over_rfcomm(cid, buffer); 437 } 438 439 440 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 441 return hfp_ag_send_ok(cid); 442 } 443 444 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 445 char buffer[40]; 446 const int size = sizeof(buffer); 447 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 448 offset += hfp_hf_indicators_join(buffer+offset, size-offset-10); 449 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 450 return send_str_over_rfcomm(cid, buffer); 451 } 452 453 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 454 char buffer[40]; 455 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 456 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 457 return send_str_over_rfcomm(cid, buffer); 458 } 459 460 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 461 char buffer[20]; 462 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d\r\n", 463 HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, 464 indicator->status); 465 buffer[sizeof(buffer) - 1] = 0; 466 return send_str_over_rfcomm(cid, buffer); 467 } 468 469 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 470 char buffer[41]; 471 if (strlen(op.name) == 0){ 472 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 473 } else { 474 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 475 offset += snprintf(buffer+offset, 16, "%s", op.name); 476 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 477 } 478 return send_str_over_rfcomm(cid, buffer); 479 } 480 481 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 482 char buffer[30]; 483 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 484 return send_str_over_rfcomm(cid, buffer); 485 } 486 487 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 488 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 489 } 490 491 static int hfp_ag_send_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 492 return hfp_ag_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 493 } 494 495 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 496 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 497 } 498 499 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 500 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 501 } 502 503 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 504 return hfp_ag_send_cmd_with_int(cid, HFP_RESPONSE_AND_HOLD, state); 505 } 506 507 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 508 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 509 510 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 511 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 512 return HFP_CODEC_MSBC; 513 } 514 } 515 return HFP_CODEC_CVSD; 516 } 517 518 /* state machines */ 519 520 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 521 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4)); 522 } 523 524 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 525 /* events ( == commands): 526 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 527 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 528 hf_trigger_codec_connection_setup == received BCC 529 ag_trigger_codec_connection_setup == received from AG to send BCS 530 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 531 */ 532 533 switch (hfp_connection->codecs_state){ 534 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 535 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 536 break; 537 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 538 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 539 break; 540 default: 541 break; 542 } 543 544 switch (hfp_connection->command){ 545 case HFP_CMD_AVAILABLE_CODECS: 546 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 547 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 548 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 549 return 1; 550 } 551 552 switch (hfp_connection->codecs_state){ 553 case HFP_CODECS_AG_SENT_COMMON_CODEC: 554 case HFP_CODECS_EXCHANGED: 555 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 556 break; 557 default: 558 break; 559 } 560 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 561 return 1; 562 563 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 564 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 565 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 566 return 1; 567 568 case HFP_CMD_AG_SEND_COMMON_CODEC: 569 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 570 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 571 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 572 return 1; 573 574 case HFP_CMD_HF_CONFIRMED_CODEC: 575 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 576 hfp_connection->codecs_state = HFP_CODECS_ERROR; 577 hfp_ag_send_error(hfp_connection->rfcomm_cid); 578 return 1; 579 } 580 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 581 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 582 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 583 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 584 // now, pick link settings 585 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 586 #ifdef ENABLE_CC256X_ASSISTED_HFP 587 hfp_cc256x_prepare_for_sco(hfp_connection); 588 #endif 589 return 1; 590 default: 591 break; 592 } 593 return 0; 594 } 595 596 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 597 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 598 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 599 600 // if active call exist, set per-hfp_connection state active, too (when audio is on) 601 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 602 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 603 } 604 // if AG is ringing, also start ringing on the HF 605 if ((hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS) && 606 (hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS)){ 607 hfp_ag_hf_start_ringing(hfp_connection); 608 } 609 } 610 611 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 612 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 613 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 614 int sent = 0; 615 switch(hfp_connection->command){ 616 case HFP_CMD_SUPPORTED_FEATURES: 617 switch(hfp_connection->state){ 618 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 619 case HFP_EXCHANGE_SUPPORTED_FEATURES: 620 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 621 if (has_codec_negotiation_feature(hfp_connection)){ 622 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 623 } else { 624 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 625 } 626 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 627 return 1; 628 default: 629 break; 630 } 631 break; 632 case HFP_CMD_AVAILABLE_CODECS: 633 sent = codecs_exchange_state_machine(hfp_connection); 634 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 635 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 636 } 637 return sent; 638 639 case HFP_CMD_RETRIEVE_AG_INDICATORS: 640 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 641 // HF requested AG Indicators and we did expect it 642 hfp_connection->send_ag_indicators_segment = 0; 643 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 644 // continue below in state switch 645 } 646 break; 647 648 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 649 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 650 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 651 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 652 return 1; 653 654 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 655 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 656 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 657 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 658 } else if (has_hf_indicators_feature(hfp_connection)){ 659 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 660 } else { 661 hfp_ag_slc_established(hfp_connection); 662 } 663 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 664 return 1; 665 666 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 667 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 668 if (has_hf_indicators_feature(hfp_connection)){ 669 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 670 } 671 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 672 if (!has_hf_indicators_feature(hfp_connection)){ 673 hfp_ag_slc_established(hfp_connection); 674 } 675 return 1; 676 677 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 678 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 679 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 680 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 681 return 1; 682 683 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 684 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 685 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 686 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 687 return 1; 688 689 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 690 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 691 hfp_ag_slc_established(hfp_connection); 692 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 693 return 1; 694 default: 695 break; 696 } 697 698 switch (hfp_connection->state){ 699 case HFP_RETRIEVE_INDICATORS: { 700 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 701 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 702 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 703 if (next_segment < num_segments){ 704 // prepare sending of next segment 705 hfp_connection->send_ag_indicators_segment = next_segment; 706 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 707 } else { 708 // done, go to next state 709 hfp_connection->send_ag_indicators_segment = 0; 710 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 711 } 712 return 1; 713 } 714 default: 715 break; 716 } 717 return 0; 718 } 719 720 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 721 int sent = codecs_exchange_state_machine(hfp_connection); 722 if (sent) return 1; 723 724 switch(hfp_connection->command){ 725 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 726 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 727 hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 728 return 1; 729 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 730 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 731 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 732 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 733 hfp_ag_setup_audio_connection(hfp_connection); 734 } else { 735 hfp_ag_send_error(hfp_connection->rfcomm_cid); 736 } 737 return 1; 738 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 739 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 740 return 1; 741 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 742 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 743 return 1; 744 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 745 if (hfp_connection->network_operator.format != 0){ 746 hfp_ag_send_error(hfp_connection->rfcomm_cid); 747 } else { 748 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 749 } 750 return 1; 751 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 752 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 753 return 1; 754 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 755 if (hfp_connection->extended_audio_gateway_error){ 756 hfp_connection->extended_audio_gateway_error = 0; 757 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 758 return 1; 759 } 760 break; 761 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 762 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 763 return 1; 764 default: 765 break; 766 } 767 return 0; 768 } 769 770 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 771 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 772 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 773 774 775 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 776 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 777 hfp_connection->release_audio_connection = 0; 778 gap_disconnect(hfp_connection->sco_handle); 779 return 1; 780 } 781 782 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 783 784 // run codecs exchange 785 int sent = codecs_exchange_state_machine(hfp_connection); 786 if (sent) return 1; 787 788 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 789 if (hfp_connection->establish_audio_connection){ 790 hfp_connection->state = HFP_W4_SCO_CONNECTED; 791 hfp_connection->establish_audio_connection = 0; 792 hfp_setup_synchronous_connection(hfp_connection); 793 return 1; 794 } 795 return 0; 796 } 797 798 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 799 btstack_linked_list_iterator_t it; 800 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 801 802 while (btstack_linked_list_iterator_has_next(&it)){ 803 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 804 if ( & hfp_connection->hfp_timeout == ts) { 805 return hfp_connection; 806 } 807 } 808 return NULL; 809 } 810 811 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 812 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 813 if (!hfp_connection) return; 814 815 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 816 hfp_connection->ag_ring = 1; 817 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 818 819 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 820 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 821 822 hfp_ag_run_for_context(hfp_connection); 823 } 824 825 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 826 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 827 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 828 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 829 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 830 } 831 832 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 833 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 834 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 835 } 836 837 // 838 // transitition implementations for hfp_ag_call_state_machine 839 // 840 841 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 842 if (use_in_band_tone()){ 843 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 844 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 845 } else { 846 hfp_timeout_start(hfp_connection); 847 hfp_connection->ag_ring = 1; 848 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 849 hfp_connection->call_state = HFP_CALL_RINGING; 850 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 851 } 852 } 853 854 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 855 hfp_connection->ag_ring = 0; 856 hfp_connection->ag_send_clip = 0; 857 hfp_timeout_stop(hfp_connection); 858 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 859 } 860 861 static void hfp_ag_trigger_incoming_call(void){ 862 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 863 if (indicator_index < 0) return; 864 865 btstack_linked_list_iterator_t it; 866 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 867 while (btstack_linked_list_iterator_has_next(&it)){ 868 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 869 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 870 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 871 if (hfp_connection->call_state == HFP_CALL_IDLE){ 872 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 873 hfp_ag_hf_start_ringing(hfp_connection); 874 } 875 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 876 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 877 } 878 hfp_ag_run_for_context(hfp_connection); 879 } 880 } 881 882 static void hfp_ag_transfer_indicator(const char * name){ 883 int indicator_index = get_ag_indicator_index_for_name(name); 884 if (indicator_index < 0) return; 885 886 btstack_linked_list_iterator_t it; 887 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 888 while (btstack_linked_list_iterator_has_next(&it)){ 889 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 890 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 891 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 892 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 893 hfp_ag_run_for_context(hfp_connection); 894 } 895 } 896 897 static void hfp_ag_transfer_callsetup_state(void){ 898 hfp_ag_transfer_indicator("callsetup"); 899 } 900 901 static void hfp_ag_transfer_call_state(void){ 902 hfp_ag_transfer_indicator("call"); 903 } 904 905 static void hfp_ag_transfer_callheld_state(void){ 906 hfp_ag_transfer_indicator("callheld"); 907 } 908 909 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 910 911 int call_indicator_index = get_ag_indicator_index_for_name("call"); 912 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 913 914 btstack_linked_list_iterator_t it; 915 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 916 while (btstack_linked_list_iterator_has_next(&it)){ 917 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 918 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 919 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 920 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 921 922 hfp_ag_hf_stop_ringing(hfp_connection); 923 if (hfp_connection == source){ 924 925 if (use_in_band_tone()){ 926 hfp_connection->call_state = HFP_CALL_ACTIVE; 927 } else { 928 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 929 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 930 } 931 932 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 933 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 934 935 } else { 936 hfp_connection->call_state = HFP_CALL_IDLE; 937 } 938 hfp_ag_run_for_context(hfp_connection); 939 } 940 } 941 942 static void hfp_ag_ag_accept_call(void){ 943 944 int call_indicator_index = get_ag_indicator_index_for_name("call"); 945 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 946 947 btstack_linked_list_iterator_t it; 948 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 949 while (btstack_linked_list_iterator_has_next(&it)){ 950 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 951 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 952 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 953 954 hfp_ag_hf_stop_ringing(hfp_connection); 955 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 956 957 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 958 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 959 960 hfp_ag_run_for_context(hfp_connection); 961 break; // only single 962 } 963 } 964 965 static void hfp_ag_trigger_reject_call(void){ 966 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 967 btstack_linked_list_iterator_t it; 968 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 969 while (btstack_linked_list_iterator_has_next(&it)){ 970 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 971 if (connection->local_role != HFP_ROLE_AG) continue; 972 if ((connection->call_state != HFP_CALL_RINGING) && 973 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 974 hfp_ag_hf_stop_ringing(connection); 975 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 976 connection->call_state = HFP_CALL_IDLE; 977 hfp_ag_run_for_context(connection); 978 } 979 } 980 981 static void hfp_ag_trigger_terminate_call(void){ 982 int call_indicator_index = get_ag_indicator_index_for_name("call"); 983 984 btstack_linked_list_iterator_t it; 985 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 986 while (btstack_linked_list_iterator_has_next(&it)){ 987 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 988 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 989 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 990 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 991 hfp_connection->call_state = HFP_CALL_IDLE; 992 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 993 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 994 hfp_connection->release_audio_connection = 1; 995 } 996 hfp_ag_run_for_context(hfp_connection); 997 } 998 hfp_ag_emit_simple_event(HFP_SUBEVENT_CALL_TERMINATED); 999 } 1000 1001 static void hfp_ag_set_callsetup_indicator(void){ 1002 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1003 if (!indicator){ 1004 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1005 return; 1006 }; 1007 indicator->status = hfp_gsm_callsetup_status(); 1008 } 1009 1010 static void hfp_ag_set_callheld_indicator(void){ 1011 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1012 if (!indicator){ 1013 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1014 return; 1015 }; 1016 indicator->status = hfp_gsm_callheld_status(); 1017 } 1018 1019 static void hfp_ag_set_call_indicator(void){ 1020 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1021 if (!indicator){ 1022 log_error("hfp_ag_set_call_state: call indicator is missing"); 1023 return; 1024 }; 1025 indicator->status = hfp_gsm_call_status(); 1026 } 1027 1028 static void hfp_ag_stop_ringing(void){ 1029 btstack_linked_list_iterator_t it; 1030 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1031 while (btstack_linked_list_iterator_has_next(&it)){ 1032 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1033 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1034 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1035 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1036 hfp_ag_hf_stop_ringing(hfp_connection); 1037 } 1038 } 1039 1040 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1041 btstack_linked_list_iterator_t it; 1042 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1043 while (btstack_linked_list_iterator_has_next(&it)){ 1044 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1045 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1046 if (hfp_connection->call_state == call_state) return hfp_connection; 1047 } 1048 return NULL; 1049 } 1050 1051 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1052 btstack_linked_list_iterator_t it; 1053 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1054 while (btstack_linked_list_iterator_has_next(&it)){ 1055 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1056 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1057 hfp_connection->send_response_and_hold_status = state + 1; 1058 } 1059 } 1060 1061 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1062 int indicator_index; 1063 switch (hfp_connection->call_state){ 1064 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1065 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1066 // we got event: audio hfp_connection established 1067 hfp_timeout_start(hfp_connection); 1068 hfp_connection->ag_ring = 1; 1069 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1070 hfp_connection->call_state = HFP_CALL_RINGING; 1071 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1072 break; 1073 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1074 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1075 // we got event: audio hfp_connection established 1076 hfp_connection->call_state = HFP_CALL_ACTIVE; 1077 break; 1078 case HFP_CALL_W2_SEND_CALL_WAITING: 1079 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1080 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1081 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1082 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1083 break; 1084 default: 1085 break; 1086 } 1087 return 0; 1088 } 1089 1090 // functions extracted from hfp_ag_call_sm below 1091 static void hfp_ag_handle_reject_incoming_call(void){ 1092 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1093 if (!hfp_connection){ 1094 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1095 return; 1096 } 1097 1098 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1099 hfp_connection->call_state = HFP_CALL_IDLE; 1100 hfp_connection->send_error = 1; 1101 hfp_ag_run_for_context(hfp_connection); 1102 } 1103 1104 // hfp_connection is used to identify originating HF 1105 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1106 int indicator_index; 1107 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1108 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1109 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1110 1111 switch (event){ 1112 case HFP_AG_INCOMING_CALL: 1113 switch (hfp_gsm_call_status()){ 1114 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1115 switch (hfp_gsm_callsetup_status()){ 1116 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1117 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1118 hfp_ag_set_callsetup_indicator(); 1119 hfp_ag_trigger_incoming_call(); 1120 log_info("AG rings"); 1121 break; 1122 default: 1123 break; 1124 } 1125 break; 1126 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1127 switch (hfp_gsm_callsetup_status()){ 1128 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1129 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1130 hfp_ag_set_callsetup_indicator(); 1131 hfp_ag_trigger_incoming_call(); 1132 log_info("AG call waiting"); 1133 break; 1134 default: 1135 break; 1136 } 1137 break; 1138 default: 1139 break; 1140 } 1141 break; 1142 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1143 switch (hfp_gsm_call_status()){ 1144 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1145 switch (hfp_gsm_callsetup_status()){ 1146 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1147 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1148 hfp_ag_set_call_indicator(); 1149 hfp_ag_set_callsetup_indicator(); 1150 hfp_ag_ag_accept_call(); 1151 log_info("AG answers call, accept call by GSM"); 1152 break; 1153 default: 1154 break; 1155 } 1156 break; 1157 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1158 switch (hfp_gsm_callsetup_status()){ 1159 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1160 log_info("AG: current call is placed on hold, incoming call gets active"); 1161 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1162 hfp_ag_set_callsetup_indicator(); 1163 hfp_ag_set_callheld_indicator(); 1164 hfp_ag_transfer_callsetup_state(); 1165 hfp_ag_transfer_callheld_state(); 1166 break; 1167 default: 1168 break; 1169 } 1170 break; 1171 default: 1172 break; 1173 } 1174 break; 1175 1176 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1177 switch (hfp_gsm_call_status()){ 1178 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1179 switch (hfp_gsm_callheld_status()){ 1180 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1181 log_info("AG: joining held call with active call"); 1182 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1183 hfp_ag_set_callheld_indicator(); 1184 hfp_ag_transfer_callheld_state(); 1185 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1186 break; 1187 default: 1188 break; 1189 } 1190 break; 1191 default: 1192 break; 1193 } 1194 break; 1195 1196 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 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_HF, 0, 0, NULL); 1202 hfp_ag_set_callsetup_indicator(); 1203 hfp_ag_set_call_indicator(); 1204 hfp_ag_hf_accept_call(hfp_connection); 1205 hfp_connection->ok_pending = 1; 1206 log_info("HF answers call, accept call by GSM"); 1207 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1208 break; 1209 default: 1210 break; 1211 } 1212 break; 1213 default: 1214 break; 1215 } 1216 break; 1217 1218 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1219 switch (hfp_gsm_call_status()){ 1220 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1221 switch (hfp_gsm_callsetup_status()){ 1222 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1223 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1224 hfp_ag_response_and_hold_active = 1; 1225 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1226 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1227 // as with regualr call 1228 hfp_ag_set_call_indicator(); 1229 hfp_ag_set_callsetup_indicator(); 1230 hfp_ag_ag_accept_call(); 1231 log_info("AG response and hold - hold by AG"); 1232 break; 1233 default: 1234 break; 1235 } 1236 break; 1237 default: 1238 break; 1239 } 1240 break; 1241 1242 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1243 switch (hfp_gsm_call_status()){ 1244 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1245 switch (hfp_gsm_callsetup_status()){ 1246 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1247 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1248 hfp_ag_response_and_hold_active = 1; 1249 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1250 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1251 // as with regualr call 1252 hfp_ag_set_call_indicator(); 1253 hfp_ag_set_callsetup_indicator(); 1254 hfp_ag_hf_accept_call(hfp_connection); 1255 log_info("AG response and hold - hold by HF"); 1256 break; 1257 default: 1258 break; 1259 } 1260 break; 1261 default: 1262 break; 1263 } 1264 break; 1265 1266 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1267 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1268 if (!hfp_ag_response_and_hold_active) break; 1269 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1270 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1271 hfp_ag_response_and_hold_active = 0; 1272 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1273 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1274 log_info("Held Call accepted and active"); 1275 break; 1276 1277 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1278 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1279 if (!hfp_ag_response_and_hold_active) break; 1280 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1281 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1282 hfp_ag_response_and_hold_active = 0; 1283 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1284 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1285 // from terminate by ag 1286 hfp_ag_set_call_indicator(); 1287 hfp_ag_trigger_terminate_call(); 1288 break; 1289 1290 case HFP_AG_TERMINATE_CALL_BY_HF: 1291 switch (hfp_gsm_call_status()){ 1292 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1293 switch (hfp_gsm_callsetup_status()){ 1294 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1295 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1296 hfp_ag_set_callsetup_indicator(); 1297 hfp_ag_transfer_callsetup_state(); 1298 hfp_ag_trigger_reject_call(); 1299 log_info("HF Rejected Incoming call, AG terminate call"); 1300 break; 1301 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1302 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1303 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1304 hfp_ag_set_callsetup_indicator(); 1305 hfp_ag_transfer_callsetup_state(); 1306 log_info("AG terminate outgoing call process"); 1307 break; 1308 default: 1309 break; 1310 } 1311 break; 1312 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1313 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1314 hfp_ag_set_callsetup_indicator(); 1315 hfp_ag_set_call_indicator(); 1316 hfp_ag_trigger_terminate_call(); 1317 log_info("AG terminate call"); 1318 break; 1319 default: 1320 break; 1321 } 1322 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1323 break; 1324 1325 case HFP_AG_TERMINATE_CALL_BY_AG: 1326 switch (hfp_gsm_call_status()){ 1327 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1328 switch (hfp_gsm_callsetup_status()){ 1329 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1330 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1331 hfp_ag_set_callsetup_indicator(); 1332 hfp_ag_trigger_reject_call(); 1333 log_info("AG Rejected Incoming call, AG terminate call"); 1334 break; 1335 default: 1336 break; 1337 } 1338 break; 1339 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1340 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1341 hfp_ag_set_callsetup_indicator(); 1342 hfp_ag_set_call_indicator(); 1343 hfp_ag_trigger_terminate_call(); 1344 log_info("AG terminate call"); 1345 break; 1346 default: 1347 break; 1348 } 1349 break; 1350 case HFP_AG_CALL_DROPPED: 1351 switch (hfp_gsm_call_status()){ 1352 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1353 switch (hfp_gsm_callsetup_status()){ 1354 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1355 hfp_ag_stop_ringing(); 1356 log_info("Incoming call interrupted"); 1357 break; 1358 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1359 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1360 log_info("Outgoing call interrupted\n"); 1361 log_info("AG notify call dropped\n"); 1362 break; 1363 default: 1364 break; 1365 } 1366 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1367 hfp_ag_set_callsetup_indicator(); 1368 hfp_ag_transfer_callsetup_state(); 1369 hfp_ag_trigger_terminate_call(); 1370 break; 1371 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1372 if (hfp_ag_response_and_hold_active) { 1373 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1374 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1375 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1376 } 1377 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1378 hfp_ag_set_callsetup_indicator(); 1379 hfp_ag_set_call_indicator(); 1380 hfp_ag_trigger_terminate_call(); 1381 log_info("AG notify call dropped"); 1382 break; 1383 default: 1384 break; 1385 } 1386 break; 1387 1388 case HFP_AG_OUTGOING_CALL_INITIATED: 1389 // directly reject call if number of free slots is exceeded 1390 if (!hfp_gsm_call_possible()){ 1391 hfp_connection->send_error = 1; 1392 hfp_ag_run_for_context(hfp_connection); 1393 break; 1394 } 1395 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1396 1397 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1398 1399 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1400 break; 1401 1402 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1403 // directly reject call if number of free slots is exceeded 1404 if (!hfp_gsm_call_possible()){ 1405 hfp_connection->send_error = 1; 1406 hfp_ag_run_for_context(hfp_connection); 1407 break; 1408 } 1409 1410 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1411 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1412 1413 log_info("Redial last number"); 1414 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1415 1416 if (strlen(last_dialed_number) > 0){ 1417 log_info("Last number exists: accept call"); 1418 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1419 } else { 1420 log_info("log_infoLast number missing: reject call"); 1421 hfp_ag_handle_reject_incoming_call(); 1422 } 1423 break; 1424 } 1425 case HFP_AG_OUTGOING_CALL_REJECTED: 1426 hfp_ag_handle_reject_incoming_call(); 1427 break; 1428 1429 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1430 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1431 if (!hfp_connection){ 1432 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1433 break; 1434 } 1435 1436 hfp_connection->ok_pending = 1; 1437 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1438 1439 // trigger callsetup to be 1440 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1441 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1442 1443 hfp_ag_set_callsetup_indicator(); 1444 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1445 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1446 1447 // put current call on hold if active 1448 if (put_call_on_hold){ 1449 log_info("AG putting current call on hold for new outgoing calllog_info"); 1450 hfp_ag_set_callheld_indicator(); 1451 indicator_index = get_ag_indicator_index_for_name("callheld"); 1452 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1453 } 1454 1455 // start audio if needed 1456 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1457 break; 1458 } 1459 case HFP_AG_OUTGOING_CALL_RINGING: 1460 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1461 if (!hfp_connection){ 1462 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1463 break; 1464 } 1465 1466 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1467 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1468 hfp_ag_set_callsetup_indicator(); 1469 hfp_ag_transfer_callsetup_state(); 1470 break; 1471 1472 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1473 // get outgoing call 1474 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1475 if (!hfp_connection){ 1476 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1477 } 1478 if (!hfp_connection){ 1479 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1480 break; 1481 } 1482 1483 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1484 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1485 hfp_connection->call_state = HFP_CALL_ACTIVE; 1486 hfp_ag_set_callsetup_indicator(); 1487 hfp_ag_set_call_indicator(); 1488 hfp_ag_transfer_call_state(); 1489 hfp_ag_transfer_callsetup_state(); 1490 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1491 hfp_ag_set_callheld_indicator(); 1492 hfp_ag_transfer_callheld_state(); 1493 } 1494 break; 1495 } 1496 1497 case HFP_AG_CALL_HOLD_USER_BUSY: 1498 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1499 hfp_ag_set_callsetup_indicator(); 1500 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1501 hfp_connection->call_state = HFP_CALL_ACTIVE; 1502 log_info("AG: Call Waiting, User Busy"); 1503 break; 1504 1505 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1506 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1507 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1508 1509 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1510 if (call_held || call_setup_in_progress){ 1511 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1512 0, NULL); 1513 1514 } 1515 1516 if (call_setup_in_progress){ 1517 log_info("AG: Call Dropped, Accept new call"); 1518 hfp_ag_set_callsetup_indicator(); 1519 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1520 } else { 1521 log_info("AG: Call Dropped, Resume held call"); 1522 } 1523 if (call_held){ 1524 hfp_ag_set_callheld_indicator(); 1525 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1526 } 1527 1528 hfp_connection->call_state = HFP_CALL_ACTIVE; 1529 break; 1530 } 1531 1532 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1533 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1534 // only update if callsetup changed 1535 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1536 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1537 NULL); 1538 1539 if (call_setup_in_progress){ 1540 log_info("AG: Call on Hold, Accept new call"); 1541 hfp_ag_set_callsetup_indicator(); 1542 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1543 } else { 1544 log_info("AG: Swap calls"); 1545 } 1546 1547 hfp_ag_set_callheld_indicator(); 1548 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1549 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1550 hfp_connection->call_state = HFP_CALL_ACTIVE; 1551 break; 1552 } 1553 1554 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1555 // Adds a held call to the conversation. 1556 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1557 log_info("AG: Join 3-way-call"); 1558 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1559 hfp_ag_set_callheld_indicator(); 1560 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1561 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1562 } 1563 hfp_connection->call_state = HFP_CALL_ACTIVE; 1564 break; 1565 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1566 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1567 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1568 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1569 hfp_ag_set_call_indicator(); 1570 hfp_ag_set_callheld_indicator(); 1571 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1572 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1573 hfp_connection->call_state = HFP_CALL_IDLE; 1574 break; 1575 1576 default: 1577 break; 1578 } 1579 1580 1581 } 1582 1583 1584 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1585 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1586 if (!active_call) return; 1587 1588 int idx = active_call->index; 1589 hfp_enhanced_call_dir_t dir = active_call->direction; 1590 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1591 hfp_enhanced_call_mode_t mode = active_call->mode; 1592 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1593 uint8_t type = active_call->clip_type; 1594 char * number = active_call->clip_number; 1595 1596 char buffer[100]; 1597 // TODO: check length of a buffer, to fit the MTU 1598 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1599 if (number){ 1600 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1601 } 1602 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1603 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, 1604 mode, mpty, type, number); 1605 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1606 } 1607 1608 1609 // sends pending command, returns if command was sent 1610 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1611 1612 if (hfp_connection->send_status_of_current_calls){ 1613 hfp_connection->ok_pending = 0; 1614 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1615 hfp_connection->next_call_index++; 1616 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1617 return 1; 1618 } else { 1619 // 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 1620 hfp_connection->next_call_index = 0; 1621 hfp_connection->ok_pending = 1; 1622 hfp_connection->send_status_of_current_calls = 0; 1623 } 1624 } 1625 1626 if (hfp_connection->ag_notify_incoming_call_waiting){ 1627 hfp_connection->ag_notify_incoming_call_waiting = 0; 1628 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1629 return 1; 1630 } 1631 1632 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1633 hfp_connection->ok_pending = 0; 1634 hfp_connection->send_error = 0; 1635 hfp_connection->command = HFP_CMD_NONE; 1636 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1637 return 1; 1638 } 1639 1640 if (hfp_connection->send_error){ 1641 hfp_connection->send_error = 0; 1642 hfp_connection->command = HFP_CMD_NONE; 1643 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1644 return 1; 1645 } 1646 1647 // note: before update AG indicators and ok_pending 1648 if (hfp_connection->send_response_and_hold_status){ 1649 int status = hfp_connection->send_response_and_hold_status - 1; 1650 hfp_connection->send_response_and_hold_status = 0; 1651 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1652 return 1; 1653 } 1654 1655 if (hfp_connection->ok_pending){ 1656 hfp_connection->ok_pending = 0; 1657 hfp_connection->command = HFP_CMD_NONE; 1658 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1659 return 1; 1660 } 1661 1662 // update AG indicators 1663 if (hfp_connection->ag_indicators_status_update_bitmap){ 1664 int i; 1665 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1666 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1667 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1668 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1669 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1670 break; 1671 } 1672 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1673 return 1; 1674 } 1675 } 1676 } 1677 1678 if (hfp_connection->ag_ring){ 1679 hfp_connection->ag_ring = 0; 1680 hfp_connection->command = HFP_CMD_NONE; 1681 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1682 return 1; 1683 } 1684 1685 if (hfp_connection->ag_send_clip){ 1686 hfp_connection->ag_send_clip = 0; 1687 hfp_connection->command = HFP_CMD_NONE; 1688 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1689 return 1; 1690 } 1691 1692 if (hfp_connection->send_phone_number_for_voice_tag){ 1693 hfp_connection->send_phone_number_for_voice_tag = 0; 1694 hfp_connection->command = HFP_CMD_NONE; 1695 hfp_connection->ok_pending = 1; 1696 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1697 return 1; 1698 } 1699 1700 if (hfp_connection->send_subscriber_number){ 1701 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1702 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1703 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1704 } else { 1705 hfp_connection->send_subscriber_number = 0; 1706 hfp_connection->next_subscriber_number_to_send = 0; 1707 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1708 } 1709 hfp_connection->command = HFP_CMD_NONE; 1710 return 1; 1711 } 1712 1713 if (hfp_connection->send_microphone_gain){ 1714 hfp_connection->send_microphone_gain = 0; 1715 hfp_connection->command = HFP_CMD_NONE; 1716 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1717 return 1; 1718 } 1719 1720 if (hfp_connection->send_speaker_gain){ 1721 hfp_connection->send_speaker_gain = 0; 1722 hfp_connection->command = HFP_CMD_NONE; 1723 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1724 return 1; 1725 } 1726 1727 if (hfp_connection->send_ag_status_indicators){ 1728 hfp_connection->send_ag_status_indicators = 0; 1729 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1730 return 1; 1731 } 1732 1733 return 0; 1734 } 1735 1736 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1737 1738 btstack_assert(hfp_connection != NULL); 1739 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1740 1741 // during SDP query, RFCOMM CID is not set 1742 if (hfp_connection->rfcomm_cid == 0) return; 1743 1744 // assert command could be sent 1745 if (hci_can_send_command_packet_now() == 0) return; 1746 1747 #ifdef ENABLE_CC256X_ASSISTED_HFP 1748 // WBS Disassociate 1749 if (hfp_connection->cc256x_send_wbs_disassociate){ 1750 hfp_connection->cc256x_send_wbs_disassociate = false; 1751 hci_send_cmd(&hci_ti_wbs_disassociate); 1752 return; 1753 } 1754 // Write Codec Config 1755 if (hfp_connection->cc256x_send_write_codec_config){ 1756 hfp_connection->cc256x_send_write_codec_config = false; 1757 hfp_cc256x_write_codec_config(hfp_connection); 1758 return; 1759 } 1760 // WBS Associate 1761 if (hfp_connection->cc256x_send_wbs_associate){ 1762 hfp_connection->cc256x_send_wbs_associate = false; 1763 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 1764 return; 1765 } 1766 #endif 1767 #ifdef ENABLE_BCM_PCM_WBS 1768 // Enable WBS 1769 if (hfp_connection->bcm_send_enable_wbs){ 1770 hfp_connection->bcm_send_enable_wbs = false; 1771 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 1772 return; 1773 } 1774 // Write I2S/PCM params 1775 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 1776 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 1777 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 1778 return; 1779 } 1780 // Disable WBS 1781 if (hfp_connection->bcm_send_disable_wbs){ 1782 hfp_connection->bcm_send_disable_wbs = false; 1783 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 1784 return; 1785 } 1786 #endif 1787 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 1788 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 1789 hfp_finalize_connection_context(hfp_connection); 1790 return; 1791 } 1792 #endif 1793 1794 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1795 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1796 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1797 return; 1798 } 1799 1800 int cmd_sent = hfp_ag_send_commands(hfp_connection); 1801 1802 if (!cmd_sent){ 1803 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1804 } 1805 1806 if (!cmd_sent){ 1807 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1808 } 1809 1810 if (!cmd_sent){ 1811 cmd_sent = call_setup_state_machine(hfp_connection); 1812 } 1813 1814 if (!cmd_sent){ 1815 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1816 } 1817 1818 // trigger codec exchange 1819 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 1820 log_info("trigger codec, command %u, codec state %u", hfp_connection->command, hfp_connection->codecs_state); 1821 switch (hfp_connection->codecs_state){ 1822 case HFP_CODECS_IDLE: 1823 case HFP_CODECS_RECEIVED_LIST: 1824 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1825 case HFP_CODECS_ERROR: 1826 hfp_connection->trigger_codec_exchange = 0; 1827 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1828 break; 1829 default: 1830 break; 1831 } 1832 } 1833 1834 // disconnect 1835 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 1836 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1837 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1838 } 1839 1840 if (cmd_sent){ 1841 hfp_connection->command = HFP_CMD_NONE; 1842 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1843 } 1844 } 1845 1846 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1847 int i; 1848 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1849 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1850 if (indicator->uuid == number){ 1851 return indicator; 1852 } 1853 } 1854 return NULL; 1855 } 1856 1857 static int hfp_parser_is_end_of_line(uint8_t byte){ 1858 return (byte == '\n') || (byte == '\r'); 1859 } 1860 1861 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1862 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1863 1864 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1865 if (size < 1) return; 1866 1867 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1868 if (!hfp_connection) return; 1869 1870 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 1871 #ifdef ENABLE_HFP_AT_MESSAGES 1872 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1873 #endif 1874 1875 // process messages byte-wise 1876 int pos; 1877 for (pos = 0; pos < size ; pos++){ 1878 hfp_parse(hfp_connection, packet[pos], 0); 1879 1880 // parse until end of line 1881 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1882 1883 hfp_generic_status_indicator_t * indicator; 1884 switch(hfp_connection->command){ 1885 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1886 if (hfp_ag_response_and_hold_active){ 1887 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1888 } 1889 hfp_connection->ok_pending = 1; 1890 break; 1891 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1892 switch(hfp_connection->ag_response_and_hold_action){ 1893 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1894 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1895 break; 1896 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1897 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1898 break; 1899 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1900 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1901 break; 1902 default: 1903 break; 1904 } 1905 hfp_connection->ok_pending = 1; 1906 break; 1907 case HFP_CMD_HF_INDICATOR_STATUS: 1908 hfp_connection->command = HFP_CMD_NONE; 1909 // find indicator by assigned number 1910 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1911 if (!indicator){ 1912 hfp_connection->send_error = 1; 1913 break; 1914 } 1915 switch (indicator->uuid){ 1916 case 1: // enhanced security 1917 if (hfp_connection->parser_indicator_value > 1) { 1918 hfp_connection->send_error = 1; 1919 return; 1920 } 1921 log_info("HF Indicator 'enhanced security' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1922 break; 1923 case 2: // battery level 1924 if (hfp_connection->parser_indicator_value > 100){ 1925 hfp_connection->send_error = 1; 1926 return; 1927 } 1928 log_info("HF Indicator 'battery' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1929 break; 1930 default: 1931 log_info("HF Indicator unknown set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1932 break; 1933 } 1934 hfp_connection->ok_pending = 1; 1935 break; 1936 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1937 // expected by SLC state machine 1938 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1939 hfp_connection->send_ag_indicators_segment = 0; 1940 hfp_connection->send_ag_status_indicators = 1; 1941 break; 1942 case HFP_CMD_LIST_CURRENT_CALLS: 1943 hfp_connection->command = HFP_CMD_NONE; 1944 hfp_connection->next_call_index = 0; 1945 hfp_connection->send_status_of_current_calls = 1; 1946 break; 1947 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1948 if (subscriber_numbers_count == 0){ 1949 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1950 break; 1951 } 1952 hfp_connection->next_subscriber_number_to_send = 0; 1953 hfp_connection->send_subscriber_number = 1; 1954 break; 1955 case HFP_CMD_TRANSMIT_DTMF_CODES: 1956 { 1957 hfp_connection->command = HFP_CMD_NONE; 1958 char buffer[2]; 1959 buffer[0] = (char) hfp_connection->ag_dtmf_code; 1960 buffer[1] = 0; 1961 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 1962 break; 1963 } 1964 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1965 hfp_connection->command = HFP_CMD_NONE; 1966 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1967 break; 1968 case HFP_CMD_TURN_OFF_EC_AND_NR: 1969 hfp_connection->command = HFP_CMD_NONE; 1970 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1971 hfp_connection->ok_pending = 1; 1972 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1973 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1974 } else { 1975 hfp_connection->send_error = 1; 1976 } 1977 break; 1978 case HFP_CMD_CALL_ANSWERED: 1979 hfp_connection->command = HFP_CMD_NONE; 1980 log_info("HFP: ATA"); 1981 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1982 break; 1983 case HFP_CMD_HANG_UP_CALL: 1984 hfp_connection->command = HFP_CMD_NONE; 1985 hfp_connection->ok_pending = 1; 1986 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1987 break; 1988 case HFP_CMD_CALL_HOLD: { 1989 hfp_connection->command = HFP_CMD_NONE; 1990 hfp_connection->ok_pending = 1; 1991 1992 switch (hfp_connection->ag_call_hold_action){ 1993 case 0: 1994 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1995 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1996 break; 1997 case 1: 1998 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1999 // Where both a held and a waiting call exist, the above procedures shall apply to the 2000 // waiting call (i.e., not to the held call) in conflicting situation. 2001 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2002 break; 2003 case 2: 2004 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2005 // Where both a held and a waiting call exist, the above procedures shall apply to the 2006 // waiting call (i.e., not to the held call) in conflicting situation. 2007 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2008 break; 2009 case 3: 2010 // Adds a held call to the conversation. 2011 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2012 break; 2013 case 4: 2014 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2015 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2016 break; 2017 default: 2018 break; 2019 } 2020 hfp_connection->call_index = 0; 2021 break; 2022 } 2023 case HFP_CMD_CALL_PHONE_NUMBER: 2024 hfp_connection->command = HFP_CMD_NONE; 2025 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 2026 break; 2027 case HFP_CMD_REDIAL_LAST_NUMBER: 2028 hfp_connection->command = HFP_CMD_NONE; 2029 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2030 break; 2031 case HFP_CMD_ENABLE_CLIP: 2032 hfp_connection->command = HFP_CMD_NONE; 2033 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2034 hfp_connection->ok_pending = 1; 2035 break; 2036 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2037 hfp_connection->command = HFP_CMD_NONE; 2038 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2039 hfp_connection->ok_pending = 1; 2040 break; 2041 case HFP_CMD_SET_SPEAKER_GAIN: 2042 hfp_connection->command = HFP_CMD_NONE; 2043 hfp_connection->ok_pending = 1; 2044 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2045 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2046 break; 2047 case HFP_CMD_SET_MICROPHONE_GAIN: 2048 hfp_connection->command = HFP_CMD_NONE; 2049 hfp_connection->ok_pending = 1; 2050 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2051 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->speaker_gain); 2052 break; 2053 default: 2054 break; 2055 } 2056 } 2057 } 2058 2059 static void hfp_ag_run(void){ 2060 btstack_linked_list_iterator_t it; 2061 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2062 while (btstack_linked_list_iterator_has_next(&it)){ 2063 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2064 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2065 hfp_ag_run_for_context(hfp_connection); 2066 } 2067 } 2068 2069 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2070 switch (packet_type){ 2071 case RFCOMM_DATA_PACKET: 2072 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 2073 break; 2074 case HCI_EVENT_PACKET: 2075 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2076 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2077 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2078 return; 2079 } 2080 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2081 break; 2082 default: 2083 break; 2084 } 2085 2086 hfp_ag_run(); 2087 } 2088 2089 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2090 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2091 hfp_ag_run(); 2092 } 2093 2094 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2095 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2096 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2097 return; 2098 } 2099 int i; 2100 hfp_codecs_nr = codecs_nr; 2101 for (i=0; i < codecs_nr; i++){ 2102 hfp_codecs[i] = codecs[i]; 2103 } 2104 } 2105 2106 void hfp_ag_init_supported_features(uint32_t supported_features){ 2107 hfp_supported_features = supported_features; 2108 } 2109 2110 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2111 hfp_ag_indicators_nr = ag_indicators_nr; 2112 (void)memcpy(hfp_ag_indicators, ag_indicators, 2113 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2114 } 2115 2116 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2117 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2118 hfp_generic_status_indicators_nr = hf_indicators_nr; 2119 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2120 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2121 } 2122 2123 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2124 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2125 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2126 call_hold_services_nr * sizeof(char *)); 2127 } 2128 2129 2130 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2131 2132 hfp_init(); 2133 hfp_ag_call_hold_services_nr = 0; 2134 hfp_ag_response_and_hold_active = 0; 2135 hfp_ag_indicators_nr = 0; 2136 hfp_codecs_nr = 0; 2137 hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2138 subscriber_numbers = NULL; 2139 subscriber_numbers_count = 0; 2140 2141 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2142 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2143 2144 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2145 2146 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2147 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2148 2149 hfp_gsm_init(); 2150 } 2151 2152 void hfp_ag_deinit(void){ 2153 hfp_deinit(); 2154 hfp_gsm_deinit(); 2155 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2156 (void) memset(&hfp_ag_callback, 0, sizeof(btstack_packet_handler_t)); 2157 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2158 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2159 } 2160 2161 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2162 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2163 } 2164 2165 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2166 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2167 if (!hfp_connection){ 2168 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2169 return; 2170 } 2171 hfp_release_service_level_connection(hfp_connection); 2172 hfp_ag_run_for_context(hfp_connection); 2173 } 2174 2175 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2176 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2177 if (!hfp_connection){ 2178 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2179 return; 2180 } 2181 hfp_connection->extended_audio_gateway_error = 0; 2182 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2183 return; 2184 } 2185 hfp_connection->extended_audio_gateway_error = error; 2186 hfp_ag_run_for_context(hfp_connection); 2187 } 2188 2189 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2190 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2191 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2192 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2193 2194 hfp_connection->establish_audio_connection = 1; 2195 if (!has_codec_negotiation_feature(hfp_connection)){ 2196 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2197 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2198 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2199 // now, pick link settings 2200 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2201 #ifdef ENABLE_CC256X_ASSISTED_HFP 2202 hfp_cc256x_prepare_for_sco(hfp_connection); 2203 #endif 2204 return; 2205 } 2206 2207 hfp_connection->trigger_codec_exchange = 1; 2208 } 2209 2210 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2211 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2212 if (!hfp_connection){ 2213 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2214 return; 2215 } 2216 hfp_connection->trigger_codec_exchange = 0; 2217 hfp_connection->establish_audio_connection = 0; 2218 hfp_ag_setup_audio_connection(hfp_connection); 2219 hfp_ag_run_for_context(hfp_connection); 2220 } 2221 2222 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2223 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2224 if (!hfp_connection){ 2225 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2226 return; 2227 } 2228 hfp_release_audio_connection(hfp_connection); 2229 hfp_ag_run_for_context(hfp_connection); 2230 } 2231 2232 /** 2233 * @brief Enable in-band ring tone 2234 */ 2235 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2236 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2237 return; 2238 } 2239 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2240 2241 btstack_linked_list_iterator_t it; 2242 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2243 while (btstack_linked_list_iterator_has_next(&it)){ 2244 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2245 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2246 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2247 hfp_ag_run_for_context(hfp_connection); 2248 } 2249 } 2250 2251 /** 2252 * @brief Called from GSM 2253 */ 2254 void hfp_ag_incoming_call(void){ 2255 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2256 } 2257 2258 /** 2259 * @brief number is stored. 2260 */ 2261 void hfp_ag_set_clip(uint8_t type, const char * number){ 2262 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2263 } 2264 2265 void hfp_ag_call_dropped(void){ 2266 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2267 } 2268 2269 // call from AG UI 2270 void hfp_ag_answer_incoming_call(void){ 2271 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2272 } 2273 2274 void hfp_ag_join_held_call(void){ 2275 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2276 } 2277 2278 void hfp_ag_terminate_call(void){ 2279 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2280 } 2281 2282 void hfp_ag_outgoing_call_ringing(void){ 2283 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2284 } 2285 2286 void hfp_ag_outgoing_call_established(void){ 2287 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2288 } 2289 2290 void hfp_ag_outgoing_call_rejected(void){ 2291 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2292 } 2293 2294 void hfp_ag_outgoing_call_accepted(void){ 2295 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2296 } 2297 2298 void hfp_ag_hold_incoming_call(void){ 2299 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2300 } 2301 2302 void hfp_ag_accept_held_incoming_call(void) { 2303 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2304 } 2305 2306 void hfp_ag_reject_held_incoming_call(void){ 2307 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2308 } 2309 2310 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2311 int indicator_index = get_ag_indicator_index_for_name(name); 2312 if (indicator_index < 0) return; 2313 hfp_ag_indicators[indicator_index].status = value; 2314 2315 2316 btstack_linked_list_iterator_t it; 2317 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2318 while (btstack_linked_list_iterator_has_next(&it)){ 2319 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2320 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2321 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2322 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2323 continue; 2324 } 2325 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2326 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2327 hfp_ag_run_for_context(hfp_connection); 2328 } 2329 } 2330 2331 void hfp_ag_set_registration_status(int status){ 2332 hfp_ag_set_ag_indicator("service", status); 2333 } 2334 2335 void hfp_ag_set_signal_strength(int strength){ 2336 hfp_ag_set_ag_indicator("signal", strength); 2337 } 2338 2339 void hfp_ag_set_roaming_status(int status){ 2340 hfp_ag_set_ag_indicator("roam", status); 2341 } 2342 2343 void hfp_ag_set_battery_level(int level){ 2344 hfp_ag_set_ag_indicator("battchg", level); 2345 } 2346 2347 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2348 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2349 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2350 if (!hfp_connection){ 2351 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2352 return; 2353 } 2354 2355 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2356 log_info("AG cannot acivate voice recognition - not supported by HF"); 2357 return; 2358 } 2359 2360 if (activate){ 2361 hfp_ag_establish_audio_connection(acl_handle); 2362 } 2363 2364 hfp_connection->ag_activate_voice_recognition = activate; 2365 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2366 hfp_ag_run_for_context(hfp_connection); 2367 } 2368 2369 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2370 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2371 if (!hfp_connection){ 2372 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2373 return; 2374 } 2375 if (hfp_connection->microphone_gain != gain){ 2376 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2377 hfp_connection->microphone_gain = gain; 2378 hfp_connection->send_microphone_gain = 1; 2379 } 2380 hfp_ag_run_for_context(hfp_connection); 2381 } 2382 2383 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2384 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2385 if (!hfp_connection){ 2386 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2387 return; 2388 } 2389 if (hfp_connection->speaker_gain != gain){ 2390 hfp_connection->speaker_gain = gain; 2391 hfp_connection->send_speaker_gain = 1; 2392 } 2393 hfp_ag_run_for_context(hfp_connection); 2394 } 2395 2396 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2397 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2398 if (!hfp_connection){ 2399 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2400 return; 2401 } 2402 hfp_ag_set_clip(0, number); 2403 hfp_connection->send_phone_number_for_voice_tag = 1; 2404 } 2405 2406 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2407 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2408 if (!hfp_connection){ 2409 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2410 return; 2411 } 2412 hfp_connection->send_error = 1; 2413 } 2414 2415 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2416 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2417 if (!hfp_connection){ 2418 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2419 return; 2420 } 2421 hfp_connection->ok_pending = 1; 2422 } 2423 2424 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2425 subscriber_numbers = numbers; 2426 subscriber_numbers_count = numbers_count; 2427 } 2428 2429 void hfp_ag_clear_last_dialed_number(void){ 2430 hfp_gsm_clear_last_dialed_number(); 2431 } 2432 2433 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2434 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2435 if (!hfp_connection){ 2436 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2437 return; 2438 } 2439 if (!hfp_connection->call_waiting_notification_enabled) return; 2440 2441 hfp_connection->ag_notify_incoming_call_waiting = 1; 2442 hfp_ag_run_for_context(hfp_connection); 2443 } 2444 2445 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){ 2446 if (!name){ 2447 name = default_hfp_ag_service_name; 2448 } 2449 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2450 2451 /* 2452 * 0x01 – Ability to reject a call 2453 * 0x00 – No ability to reject a call 2454 */ 2455 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2456 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2457 2458 // Construct SupportedFeatures for SDP bitmap: 2459 // 2460 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2461 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2462 // 2463 // Wide band speech (bit 5) requires Codec negotiation 2464 // 2465 uint16_t sdp_features = supported_features & 0x1f; 2466 if (wide_band_speech && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2467 sdp_features |= 1 << 5; 2468 } 2469 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2470 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2471 } 2472 2473 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2474 if (callback == NULL){ 2475 log_error("hfp_ag_register_packet_handler called with NULL callback"); 2476 return; 2477 } 2478 hfp_ag_callback = callback; 2479 hfp_set_ag_callback(callback); 2480 } 2481