1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hfp_ag.c" 39 40 // ***************************************************************************** 41 // 42 // HFP Audio Gateway (AG) unit 43 // 44 // ***************************************************************************** 45 46 #include "btstack_config.h" 47 48 #include <stdint.h> 49 #include <string.h> 50 51 #include "hci_cmd.h" 52 #include "btstack_run_loop.h" 53 54 #include "bluetooth_sdp.h" 55 #include "hci.h" 56 #include "btstack_memory.h" 57 #include "hci_dump.h" 58 #include "l2cap.h" 59 #include "btstack_debug.h" 60 #include "btstack_event.h" 61 #include "classic/core.h" 62 #include "classic/hfp.h" 63 #include "classic/hfp_ag.h" 64 #include "classic/hfp_gsm_model.h" 65 #include "classic/sdp_client_rfcomm.h" 66 #include "classic/sdp_server.h" 67 #include "classic/sdp_util.h" 68 69 // private prototypes 70 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection); 71 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection); 72 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 73 74 // public prototypes 75 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 76 int get_hfp_generic_status_indicators_nr(void); 77 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 78 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 79 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 80 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 81 82 83 // const 84 static const char default_hfp_ag_service_name[] = "Voice gateway"; 85 86 // globals 87 static btstack_packet_callback_registration_t hfp_ag_hci_event_callback_registration; 88 89 static uint16_t hfp_supported_features; 90 91 static uint8_t hfp_codecs_nr; 92 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 93 94 static int hfp_ag_indicators_nr; 95 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_INDICATORS]; 96 97 static int hfp_generic_status_indicators_nr; 98 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_INDICATORS]; 99 100 static int hfp_ag_call_hold_services_nr; 101 static char *hfp_ag_call_hold_services[6]; 102 static btstack_packet_handler_t hfp_ag_callback; 103 104 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 105 static int hfp_ag_response_and_hold_active; 106 107 // Subscriber information entries 108 static hfp_phone_number_t * subscriber_numbers; 109 static int subscriber_numbers_count; 110 111 // code 112 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 113 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 114 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 115 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 116 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 117 } 118 return hfp_connection->ag_indicators_nr; 119 } 120 121 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 122 // TODO: save only value, and value changed in the hfp_connection? 123 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 124 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 125 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 126 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 127 } 128 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 129 } 130 131 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 132 int i; 133 for (i = 0; i < hfp_ag_indicators_nr; i++){ 134 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 135 return &hfp_ag_indicators[i]; 136 } 137 } 138 return NULL; 139 } 140 141 static int get_ag_indicator_index_for_name(const char * name){ 142 int i; 143 for (i = 0; i < hfp_ag_indicators_nr; i++){ 144 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 145 return i; 146 } 147 } 148 return -1; 149 } 150 151 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 152 btstack_linked_list_iterator_t it; 153 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 154 while (btstack_linked_list_iterator_has_next(&it)){ 155 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 156 if (hfp_connection->acl_handle != handle) continue; 157 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 158 return hfp_connection; 159 } 160 return NULL; 161 } 162 163 static int use_in_band_tone(void){ 164 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 165 } 166 167 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 168 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 169 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 170 return hf && ag; 171 } 172 173 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 174 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 175 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 176 return hf && ag; 177 } 178 179 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 180 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 181 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 182 return hf && ag; 183 } 184 185 /* unsolicited responses */ 186 187 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 188 char buffer[20]; 189 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", 190 HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 191 buffer[sizeof(buffer) - 1] = 0; 192 return send_str_over_rfcomm(cid, buffer); 193 } 194 195 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 196 char buffer[40]; 197 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n\r\nOK\r\n", 198 HFP_SUPPORTED_FEATURES, hfp_supported_features); 199 buffer[sizeof(buffer) - 1] = 0; 200 return send_str_over_rfcomm(cid, buffer); 201 } 202 203 static int hfp_ag_send_ok(uint16_t cid){ 204 char buffer[10]; 205 snprintf(buffer, sizeof(buffer), "\r\nOK\r\n"); 206 buffer[sizeof(buffer) - 1] = 0; 207 return send_str_over_rfcomm(cid, buffer); 208 } 209 210 static int hfp_ag_send_ring(uint16_t cid){ 211 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 212 } 213 214 static int hfp_ag_send_no_carrier(uint16_t cid){ 215 char buffer[15]; 216 snprintf(buffer, sizeof(buffer), "\r\nNO CARRIER\r\n"); 217 buffer[sizeof(buffer) - 1] = 0; 218 return send_str_over_rfcomm(cid, buffer); 219 } 220 221 static int hfp_ag_send_clip(uint16_t cid){ 222 char buffer[50]; 223 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, 224 hfp_gsm_clip_number(), hfp_gsm_clip_type()); 225 buffer[sizeof(buffer) - 1] = 0; 226 return send_str_over_rfcomm(cid, buffer); 227 } 228 229 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 230 char buffer[50]; 231 snprintf(buffer, sizeof(buffer), "\r\n%s: ,\"%s\",%u, , \r\n", 232 HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 233 buffer[sizeof(buffer) - 1] = 0; 234 return send_str_over_rfcomm(cid, buffer); 235 } 236 237 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 238 char buffer[50]; 239 snprintf(buffer, sizeof(buffer), "\r\n%s: %s\r\n", 240 HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 241 buffer[sizeof(buffer) - 1] = 0; 242 return send_str_over_rfcomm(cid, buffer); 243 } 244 245 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 246 char buffer[50]; 247 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", 248 HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), 249 hfp_gsm_clip_type()); 250 buffer[sizeof(buffer) - 1] = 0; 251 return send_str_over_rfcomm(cid, buffer); 252 } 253 254 static int hfp_ag_send_error(uint16_t cid){ 255 char buffer[10]; 256 snprintf(buffer, sizeof(buffer), "\r\nERROR\r\n"); 257 buffer[sizeof(buffer) - 1] = 0; 258 return send_str_over_rfcomm(cid, buffer); 259 } 260 261 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 262 char buffer[20]; 263 snprintf(buffer, sizeof(buffer), "\r\n%s=%d\r\n", 264 HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 265 buffer[sizeof(buffer) - 1] = 0; 266 return send_str_over_rfcomm(cid, buffer); 267 } 268 269 // get size for indicator string 270 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 271 // template: ("$NAME",($MIN,$MAX)) 272 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 273 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 274 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 275 } 276 277 // store indicator 278 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer, uint16_t buffer_size){ 279 snprintf((char *)buffer, buffer_size, "(\"%s\",(%d,%d)),", 280 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 281 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 282 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 283 ((char *)buffer)[buffer_size - 1] = 0; 284 } 285 286 // structure: header [indicator [comma indicator]] footer 287 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 288 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 289 if (!num_indicators) return 2; 290 return 3 + ((num_indicators-1) * 2); 291 } 292 293 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 294 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 295 if (index == 0) { 296 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 297 } 298 index--; 299 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 300 int indicator_index = index >> 1; 301 if ((index & 1) == 0){ 302 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 303 } 304 if (indicator_index == (num_indicators - 1)){ 305 return 8; // "\r\n\r\nOK\r\n" 306 } 307 return 1; // comma 308 } 309 310 static void hfp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer, uint16_t buffer_size){ 311 if (index == 0){ 312 *buffer++ = '\r'; 313 *buffer++ = '\n'; 314 int len = strlen(HFP_INDICATOR); 315 (void)memcpy(buffer, HFP_INDICATOR, len); 316 buffer += len; 317 *buffer++ = ':'; 318 return; 319 } 320 index--; 321 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 322 int indicator_index = index >> 1; 323 if ((index & 1) == 0){ 324 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer, buffer_size); 325 return; 326 } 327 if (indicator_index == (num_indicators-1)){ 328 (void)memcpy(buffer, "\r\n\r\nOK\r\n", 8); 329 return; 330 } 331 *buffer = ','; 332 } 333 334 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 335 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 336 int i; 337 int offset = 0; 338 for (i = 0; i < (hfp_generic_status_indicators_nr-1); i++) { 339 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 340 } 341 if (i < hfp_generic_status_indicators_nr){ 342 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_generic_status_indicators[i].uuid); 343 } 344 return offset; 345 } 346 347 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 348 if (buffer_size < (hfp_generic_status_indicators_nr * 3)) return 0; 349 int i; 350 int offset = 0; 351 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 352 offset += snprintf(buffer+offset, buffer_size-offset, "\r\n%s:%d,%d\r\n", HFP_GENERIC_STATUS_INDICATOR, hfp_generic_status_indicators[i].uuid, hfp_generic_status_indicators[i].state); 353 } 354 return offset; 355 } 356 357 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 358 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 359 int i; 360 int offset = 0; 361 for (i = 0; i < (hfp_ag_indicators_nr-1); i++) { 362 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 363 } 364 if (i<hfp_ag_indicators_nr){ 365 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 366 } 367 return offset; 368 } 369 370 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 371 if (buffer_size < (hfp_ag_call_hold_services_nr * 3)) return 0; 372 int i; 373 int offset = snprintf(buffer, buffer_size, "("); 374 for (i = 0; i < (hfp_ag_call_hold_services_nr-1); i++) { 375 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 376 } 377 if (i<hfp_ag_call_hold_services_nr){ 378 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 379 } 380 return offset; 381 } 382 383 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 384 int start_segment, int num_segments, 385 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 386 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer, uint16_t buffer_size)){ 387 388 // assumes: can send now == true 389 // assumes: num segments > 0 390 // assumes: individual segments are smaller than MTU 391 rfcomm_reserve_packet_buffer(); 392 int mtu = rfcomm_get_max_frame_size(cid); 393 uint8_t * data = rfcomm_get_outgoing_buffer(); 394 int offset = 0; 395 int segment = start_segment; 396 while (segment < num_segments){ 397 int segment_len = get_segment_len(hfp_connection, segment); 398 if ((offset + segment_len + 1) > mtu) break; 399 // append segment. As it appends a '\0', we provide a buffer one byte larger 400 store_segment(hfp_connection, segment, data+offset, segment_len + 1); 401 offset += segment_len; 402 segment++; 403 } 404 rfcomm_send_prepared(cid, offset); 405 #ifdef ENABLE_HFP_AT_MESSAGES 406 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_SENT, (char *) data); 407 #endif 408 return segment; 409 } 410 411 // returns next segment to store 412 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 413 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 414 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 415 hfp_ag_indicators_cmd_generator_get_segment_len, 416 hfp_ag_indicators_cmd_generator_store_segment); 417 } 418 419 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 420 char buffer[40]; 421 const int size = sizeof(buffer); 422 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 423 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 424 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 425 return send_str_over_rfcomm(cid, buffer); 426 } 427 428 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 429 char buffer[40]; 430 const int size = sizeof(buffer); 431 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 432 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 433 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 434 return send_str_over_rfcomm(cid, buffer); 435 } 436 437 438 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 439 return hfp_ag_send_ok(cid); 440 } 441 442 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 443 char buffer[40]; 444 const int size = sizeof(buffer); 445 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 446 offset += hfp_hf_indicators_join(buffer+offset, size-offset-10); 447 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 448 return send_str_over_rfcomm(cid, buffer); 449 } 450 451 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 452 char buffer[40]; 453 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 454 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 455 return send_str_over_rfcomm(cid, buffer); 456 } 457 458 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 459 char buffer[20]; 460 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d\r\n", 461 HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, 462 indicator->status); 463 buffer[sizeof(buffer) - 1] = 0; 464 return send_str_over_rfcomm(cid, buffer); 465 } 466 467 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 468 char buffer[41]; 469 if (strlen(op.name) == 0){ 470 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 471 } else { 472 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 473 offset += snprintf(buffer+offset, 16, "%s", op.name); 474 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 475 } 476 return send_str_over_rfcomm(cid, buffer); 477 } 478 479 static inline int hfp_ag_send_cmd_with_space_and_int(uint16_t cid, const char * cmd, uint8_t value){ 480 char buffer[30]; 481 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", cmd, value); 482 return send_str_over_rfcomm(cid, buffer); 483 } 484 485 486 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 487 char buffer[30]; 488 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 489 return send_str_over_rfcomm(cid, buffer); 490 } 491 492 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 493 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 494 } 495 496 static int hfp_ag_send_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 497 return hfp_ag_send_cmd_with_space_and_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 498 } 499 500 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 501 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 502 } 503 504 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 505 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 506 } 507 508 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 509 return hfp_ag_send_cmd_with_space_and_int(cid, HFP_RESPONSE_AND_HOLD, state); 510 } 511 512 static int hfp_ag_send_enhanced_voice_recognition_cmd(uint16_t cid, uint8_t status, uint8_t state){ 513 char buffer[30]; 514 snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, status, state); 515 return send_str_over_rfcomm(cid, buffer); 516 } 517 518 static int hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection_t *hfp_connection){ 519 char buffer[100]; 520 snprintf(buffer, sizeof(buffer), "\r\n%s: 1,%d,%X,%d,%d,\"%s\"\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, 521 hfp_connection->ag_vra_state, 522 hfp_connection->ag_msg.text_id, 523 hfp_connection->ag_msg.text_type, 524 hfp_connection->ag_msg.text_operation, 525 hfp_connection->ag_msg.text); 526 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 527 } 528 529 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 530 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 531 532 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 533 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 534 return HFP_CODEC_MSBC; 535 } 536 } 537 return HFP_CODEC_CVSD; 538 } 539 540 /* state machines */ 541 542 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 543 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4)); 544 } 545 546 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 547 /* events ( == commands): 548 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 549 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 550 hf_trigger_codec_connection_setup == received BCC 551 ag_trigger_codec_connection_setup == received from AG to send BCS 552 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 553 */ 554 switch (hfp_connection->codecs_state){ 555 case HFP_CODECS_EXCHANGED: 556 if (hfp_connection->command == HFP_CMD_AVAILABLE_CODECS){ 557 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 558 return 1; 559 } 560 break; 561 562 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 563 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 564 break; 565 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 566 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 567 break; 568 default: 569 break; 570 } 571 572 switch (hfp_connection->command){ 573 case HFP_CMD_AVAILABLE_CODECS: 574 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 575 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 576 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 577 return 1; 578 } 579 580 switch (hfp_connection->codecs_state){ 581 case HFP_CODECS_AG_SENT_COMMON_CODEC: 582 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 583 break; 584 default: 585 break; 586 } 587 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 588 return 1; 589 590 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 591 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 592 hfp_connection->establish_audio_connection = 1; 593 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 594 return 1; 595 596 case HFP_CMD_AG_SEND_COMMON_CODEC: 597 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 598 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 599 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 600 return 1; 601 602 case HFP_CMD_HF_CONFIRMED_CODEC: 603 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 604 hfp_connection->codecs_state = HFP_CODECS_ERROR; 605 hfp_ag_send_error(hfp_connection->rfcomm_cid); 606 return 1; 607 } 608 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 609 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 610 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 611 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 612 // now, pick link settings 613 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 614 #ifdef ENABLE_CC256X_ASSISTED_HFP 615 hfp_cc256x_prepare_for_sco(hfp_connection); 616 #endif 617 return 1; 618 default: 619 break; 620 } 621 return 0; 622 } 623 624 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 625 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 626 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 627 628 // if active call exist, set per-hfp_connection state active, too (when audio is on) 629 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 630 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 631 } 632 // if AG is ringing, also start ringing on the HF 633 if ((hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS) && 634 (hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS)){ 635 hfp_ag_hf_start_ringing(hfp_connection); 636 } 637 } 638 639 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 640 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 641 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 642 int sent = 0; 643 switch(hfp_connection->command){ 644 case HFP_CMD_SUPPORTED_FEATURES: 645 switch(hfp_connection->state){ 646 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 647 case HFP_EXCHANGE_SUPPORTED_FEATURES: 648 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 649 if (has_codec_negotiation_feature(hfp_connection)){ 650 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 651 } else { 652 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 653 } 654 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 655 return 1; 656 default: 657 break; 658 } 659 break; 660 case HFP_CMD_AVAILABLE_CODECS: 661 sent = codecs_exchange_state_machine(hfp_connection); 662 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 663 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 664 } 665 return sent; 666 667 case HFP_CMD_RETRIEVE_AG_INDICATORS: 668 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 669 // HF requested AG Indicators and we did expect it 670 hfp_connection->send_ag_indicators_segment = 0; 671 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 672 // continue below in state switch 673 } 674 break; 675 676 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 677 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 678 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 679 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 680 return 1; 681 682 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 683 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 684 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 685 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 686 } else if (has_hf_indicators_feature(hfp_connection)){ 687 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 688 } else { 689 hfp_ag_slc_established(hfp_connection); 690 } 691 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 692 return 1; 693 694 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 695 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 696 if (has_hf_indicators_feature(hfp_connection)){ 697 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 698 } 699 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 700 if (!has_hf_indicators_feature(hfp_connection)){ 701 hfp_ag_slc_established(hfp_connection); 702 } 703 return 1; 704 705 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 706 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 707 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 708 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 709 return 1; 710 711 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 712 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 713 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 714 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 715 return 1; 716 717 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 718 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 719 hfp_ag_slc_established(hfp_connection); 720 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 721 return 1; 722 default: 723 break; 724 } 725 726 switch (hfp_connection->state){ 727 case HFP_RETRIEVE_INDICATORS: { 728 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 729 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 730 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 731 if (next_segment < num_segments){ 732 // prepare sending of next segment 733 hfp_connection->send_ag_indicators_segment = next_segment; 734 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 735 } else { 736 // done, go to next state 737 hfp_connection->send_ag_indicators_segment = 0; 738 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 739 } 740 return 1; 741 } 742 default: 743 break; 744 } 745 return 0; 746 } 747 748 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 749 int sent = codecs_exchange_state_machine(hfp_connection); 750 if (sent) return 1; 751 752 switch(hfp_connection->command){ 753 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 754 hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 755 if (hfp_connection->ag_activate_voice_recognition > 0){ 756 hfp_ag_setup_audio_connection(hfp_connection); 757 } else { 758 hfp_release_audio_connection(hfp_connection); 759 } 760 return 1; 761 762 case HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION: 763 switch (hfp_connection->ag_vra_status){ 764 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_ACTIVATED: 765 hfp_connection->ag_vra_status = HFP_VRA_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 766 hfp_ag_send_enhanced_voice_recognition_cmd(hfp_connection->rfcomm_cid, 1, hfp_connection->ag_vra_state); 767 hfp_ag_setup_audio_connection(hfp_connection); 768 break; 769 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_STATUS: 770 hfp_connection->ag_vra_status = HFP_VRA_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 771 hfp_ag_send_enhanced_voice_recognition_cmd(hfp_connection->rfcomm_cid, 1, hfp_connection->ag_vra_state); 772 break; 773 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_OFF: 774 hfp_connection->ag_vra_status = HFP_VRA_VOICE_RECOGNITION_OFF; 775 hfp_ag_send_enhanced_voice_recognition_cmd(hfp_connection->rfcomm_cid, 0, hfp_connection->ag_vra_state); 776 hfp_release_audio_connection(hfp_connection); 777 break; 778 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_MSG: 779 hfp_connection->ag_vra_status = HFP_VRA_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 780 hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection); 781 break; 782 default: 783 return 0; 784 } 785 return 1; 786 787 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 788 789 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 790 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 791 } else { 792 switch (hfp_connection->ag_vra_status){ 793 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_ACTIVATED: 794 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 795 break; 796 default: 797 hfp_ag_send_error(hfp_connection->rfcomm_cid); 798 break; 799 } 800 } 801 return 1; 802 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 803 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 804 return 1; 805 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 806 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 807 return 1; 808 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 809 if (hfp_connection->network_operator.format != 0){ 810 hfp_ag_send_error(hfp_connection->rfcomm_cid); 811 } else { 812 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 813 } 814 return 1; 815 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 816 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 817 return 1; 818 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 819 if (hfp_connection->extended_audio_gateway_error){ 820 hfp_connection->extended_audio_gateway_error = 0; 821 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 822 return 1; 823 } 824 break; 825 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 826 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 827 return 1; 828 default: 829 break; 830 } 831 return 0; 832 } 833 834 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 835 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 836 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 837 838 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 839 840 // accept incoming audio connection (codec negotiation is not used) 841 if (hfp_connection->accept_sco){ 842 // notify about codec selection if not done already 843 if (hfp_connection->negotiated_codec == 0){ 844 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 845 } 846 // 847 bool incoming_eSCO = hfp_connection->accept_sco == 2; 848 hfp_connection->accept_sco = 0; 849 hfp_connection->state = HFP_W4_SCO_CONNECTED; 850 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 851 return 1; 852 } 853 854 // run codecs exchange 855 int sent = codecs_exchange_state_machine(hfp_connection); 856 if (sent) return 1; 857 858 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 859 if (hfp_connection->establish_audio_connection){ 860 hfp_connection->state = HFP_W4_SCO_CONNECTED; 861 hfp_connection->establish_audio_connection = 0; 862 hfp_setup_synchronous_connection(hfp_connection); 863 return 1; 864 } 865 return 0; 866 } 867 868 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 869 btstack_linked_list_iterator_t it; 870 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 871 872 while (btstack_linked_list_iterator_has_next(&it)){ 873 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 874 if ( & hfp_connection->hfp_timeout == ts) { 875 return hfp_connection; 876 } 877 } 878 return NULL; 879 } 880 881 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 882 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 883 if (!hfp_connection) return; 884 885 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 886 hfp_connection->ag_ring = 1; 887 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 888 889 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 890 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 891 892 hfp_ag_run_for_context(hfp_connection); 893 } 894 895 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 896 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 897 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 898 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 899 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 900 } 901 902 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 903 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 904 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 905 } 906 907 static void hfp_ag_set_callsetup_indicator(void){ 908 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 909 if (!indicator){ 910 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 911 return; 912 }; 913 indicator->status = hfp_gsm_callsetup_status(); 914 } 915 916 static void hfp_ag_set_callheld_indicator(void){ 917 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 918 if (!indicator){ 919 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 920 return; 921 }; 922 indicator->status = hfp_gsm_callheld_status(); 923 } 924 925 // 926 // transitition implementations for hfp_ag_call_state_machine 927 // 928 929 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 930 if (use_in_band_tone()){ 931 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 932 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 933 } else { 934 hfp_timeout_start(hfp_connection); 935 hfp_connection->ag_ring = 1; 936 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 937 hfp_connection->call_state = HFP_CALL_RINGING; 938 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 939 } 940 } 941 942 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 943 hfp_connection->ag_ring = 0; 944 hfp_connection->ag_send_clip = 0; 945 hfp_timeout_stop(hfp_connection); 946 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 947 } 948 949 static void hfp_ag_trigger_incoming_call(void){ 950 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 951 if (indicator_index < 0) return; 952 953 btstack_linked_list_iterator_t it; 954 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 955 while (btstack_linked_list_iterator_has_next(&it)){ 956 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 957 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 958 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 959 if (hfp_connection->call_state == HFP_CALL_IDLE){ 960 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 961 hfp_ag_hf_start_ringing(hfp_connection); 962 } 963 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 964 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 965 } 966 hfp_ag_run_for_context(hfp_connection); 967 } 968 } 969 970 static void hfp_ag_trigger_outgoing_call(void){ 971 btstack_linked_list_iterator_t it; 972 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 973 while (btstack_linked_list_iterator_has_next(&it)){ 974 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 975 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 976 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 977 if (hfp_connection->call_state == HFP_CALL_IDLE){ 978 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 979 } 980 } 981 } 982 983 static void hfp_ag_handle_outgoing_call_accepted(hfp_connection_t * hfp_connection){ 984 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 985 986 // trigger callsetup to be 987 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 988 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 989 990 int indicator_index ; 991 992 hfp_ag_set_callsetup_indicator(); 993 indicator_index = get_ag_indicator_index_for_name("callsetup"); 994 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 995 996 // put current call on hold if active 997 if (put_call_on_hold){ 998 log_info("AG putting current call on hold for new outgoing call"); 999 hfp_ag_set_callheld_indicator(); 1000 indicator_index = get_ag_indicator_index_for_name("callheld"); 1001 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1002 } 1003 1004 // start audio if needed 1005 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1006 } 1007 1008 static void hfp_ag_transfer_indicator(const char * name){ 1009 int indicator_index = get_ag_indicator_index_for_name(name); 1010 if (indicator_index < 0) return; 1011 1012 btstack_linked_list_iterator_t it; 1013 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1014 while (btstack_linked_list_iterator_has_next(&it)){ 1015 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1016 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1017 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1018 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1019 hfp_ag_run_for_context(hfp_connection); 1020 } 1021 } 1022 1023 static void hfp_ag_transfer_callsetup_state(void){ 1024 hfp_ag_transfer_indicator("callsetup"); 1025 } 1026 1027 static void hfp_ag_transfer_call_state(void){ 1028 hfp_ag_transfer_indicator("call"); 1029 } 1030 1031 static void hfp_ag_transfer_callheld_state(void){ 1032 hfp_ag_transfer_indicator("callheld"); 1033 } 1034 1035 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 1036 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1037 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1038 1039 btstack_linked_list_iterator_t it; 1040 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1041 while (btstack_linked_list_iterator_has_next(&it)){ 1042 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1043 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1044 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1045 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1046 1047 hfp_ag_hf_stop_ringing(hfp_connection); 1048 if (hfp_connection == source){ 1049 1050 if (use_in_band_tone()){ 1051 hfp_connection->call_state = HFP_CALL_ACTIVE; 1052 } else { 1053 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 1054 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1055 } 1056 1057 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1058 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1059 1060 } else { 1061 hfp_connection->call_state = HFP_CALL_IDLE; 1062 } 1063 hfp_ag_run_for_context(hfp_connection); 1064 } 1065 } 1066 1067 static void hfp_ag_ag_accept_call(void){ 1068 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1069 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1070 1071 btstack_linked_list_iterator_t it; 1072 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1073 while (btstack_linked_list_iterator_has_next(&it)){ 1074 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1075 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1076 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 1077 1078 hfp_ag_hf_stop_ringing(hfp_connection); 1079 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1080 1081 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1082 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1083 1084 hfp_ag_run_for_context(hfp_connection); 1085 break; // only single 1086 } 1087 } 1088 1089 static void hfp_ag_trigger_reject_call(void){ 1090 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1091 btstack_linked_list_iterator_t it; 1092 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1093 while (btstack_linked_list_iterator_has_next(&it)){ 1094 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1095 if (connection->local_role != HFP_ROLE_AG) continue; 1096 if ((connection->call_state != HFP_CALL_RINGING) && 1097 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1098 hfp_ag_hf_stop_ringing(connection); 1099 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1100 connection->call_state = HFP_CALL_IDLE; 1101 hfp_ag_run_for_context(connection); 1102 } 1103 } 1104 1105 static void hfp_ag_trigger_terminate_call(void){ 1106 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1107 1108 btstack_linked_list_iterator_t it; 1109 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1110 while (btstack_linked_list_iterator_has_next(&it)){ 1111 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1112 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1113 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1114 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1115 hfp_connection->call_state = HFP_CALL_IDLE; 1116 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1117 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1118 hfp_connection->release_audio_connection = 1; 1119 } 1120 hfp_ag_run_for_context(hfp_connection); 1121 } 1122 hfp_emit_simple_event(NULL, HFP_SUBEVENT_CALL_TERMINATED); 1123 } 1124 1125 static void hfp_ag_set_call_indicator(void){ 1126 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1127 if (!indicator){ 1128 log_error("hfp_ag_set_call_state: call indicator is missing"); 1129 return; 1130 }; 1131 indicator->status = hfp_gsm_call_status(); 1132 } 1133 1134 static void hfp_ag_stop_ringing(void){ 1135 btstack_linked_list_iterator_t it; 1136 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1137 while (btstack_linked_list_iterator_has_next(&it)){ 1138 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1139 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1140 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1141 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1142 hfp_ag_hf_stop_ringing(hfp_connection); 1143 } 1144 } 1145 1146 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1147 btstack_linked_list_iterator_t it; 1148 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1149 while (btstack_linked_list_iterator_has_next(&it)){ 1150 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1151 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1152 if (hfp_connection->call_state == call_state) return hfp_connection; 1153 } 1154 return NULL; 1155 } 1156 1157 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1158 btstack_linked_list_iterator_t it; 1159 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1160 while (btstack_linked_list_iterator_has_next(&it)){ 1161 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1162 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1163 hfp_connection->send_response_and_hold_status = state + 1; 1164 } 1165 } 1166 1167 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1168 int indicator_index; 1169 switch (hfp_connection->call_state){ 1170 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1171 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1172 // we got event: audio hfp_connection established 1173 hfp_timeout_start(hfp_connection); 1174 hfp_connection->ag_ring = 1; 1175 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1176 hfp_connection->call_state = HFP_CALL_RINGING; 1177 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1178 break; 1179 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1180 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1181 // we got event: audio hfp_connection established 1182 hfp_connection->call_state = HFP_CALL_ACTIVE; 1183 break; 1184 case HFP_CALL_W2_SEND_CALL_WAITING: 1185 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1186 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1187 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1188 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1189 break; 1190 default: 1191 break; 1192 } 1193 return 0; 1194 } 1195 1196 // functions extracted from hfp_ag_call_sm below 1197 static void hfp_ag_handle_reject_outgoing_call(void){ 1198 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1199 if (!hfp_connection){ 1200 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1201 return; 1202 } 1203 1204 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1205 hfp_connection->call_state = HFP_CALL_IDLE; 1206 hfp_connection->send_error = 1; 1207 hfp_ag_run_for_context(hfp_connection); 1208 } 1209 1210 // hfp_connection is used to identify originating HF 1211 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1212 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1213 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1214 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1215 1216 switch (event){ 1217 case HFP_AG_INCOMING_CALL: 1218 switch (hfp_gsm_call_status()){ 1219 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1220 switch (hfp_gsm_callsetup_status()){ 1221 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1222 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1223 hfp_ag_set_callsetup_indicator(); 1224 hfp_ag_trigger_incoming_call(); 1225 log_info("AG rings"); 1226 break; 1227 default: 1228 break; 1229 } 1230 break; 1231 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1232 switch (hfp_gsm_callsetup_status()){ 1233 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1234 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1235 hfp_ag_set_callsetup_indicator(); 1236 hfp_ag_trigger_incoming_call(); 1237 log_info("AG call waiting"); 1238 break; 1239 default: 1240 break; 1241 } 1242 break; 1243 default: 1244 break; 1245 } 1246 break; 1247 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1248 switch (hfp_gsm_call_status()){ 1249 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1250 switch (hfp_gsm_callsetup_status()){ 1251 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1252 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1253 hfp_ag_set_call_indicator(); 1254 hfp_ag_set_callsetup_indicator(); 1255 hfp_ag_ag_accept_call(); 1256 log_info("AG answers call, accept call by GSM"); 1257 break; 1258 default: 1259 break; 1260 } 1261 break; 1262 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1263 switch (hfp_gsm_callsetup_status()){ 1264 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1265 log_info("AG: current call is placed on hold, incoming call gets active"); 1266 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1267 hfp_ag_set_callsetup_indicator(); 1268 hfp_ag_set_callheld_indicator(); 1269 hfp_ag_transfer_callsetup_state(); 1270 hfp_ag_transfer_callheld_state(); 1271 break; 1272 default: 1273 break; 1274 } 1275 break; 1276 default: 1277 break; 1278 } 1279 break; 1280 1281 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1282 switch (hfp_gsm_call_status()){ 1283 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1284 switch (hfp_gsm_callheld_status()){ 1285 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1286 log_info("AG: joining held call with active call"); 1287 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1288 hfp_ag_set_callheld_indicator(); 1289 hfp_ag_transfer_callheld_state(); 1290 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1291 break; 1292 default: 1293 break; 1294 } 1295 break; 1296 default: 1297 break; 1298 } 1299 break; 1300 1301 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1302 switch (hfp_gsm_call_status()){ 1303 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1304 switch (hfp_gsm_callsetup_status()){ 1305 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1306 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1307 hfp_ag_set_callsetup_indicator(); 1308 hfp_ag_set_call_indicator(); 1309 hfp_ag_hf_accept_call(hfp_connection); 1310 hfp_connection->ok_pending = 1; 1311 log_info("HF answers call, accept call by GSM"); 1312 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1313 break; 1314 default: 1315 break; 1316 } 1317 break; 1318 default: 1319 break; 1320 } 1321 break; 1322 1323 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1324 switch (hfp_gsm_call_status()){ 1325 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1326 switch (hfp_gsm_callsetup_status()){ 1327 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1328 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1329 hfp_ag_response_and_hold_active = 1; 1330 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1331 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1332 // as with regualr call 1333 hfp_ag_set_call_indicator(); 1334 hfp_ag_set_callsetup_indicator(); 1335 hfp_ag_ag_accept_call(); 1336 log_info("AG response and hold - hold by AG"); 1337 break; 1338 default: 1339 break; 1340 } 1341 break; 1342 default: 1343 break; 1344 } 1345 break; 1346 1347 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1348 switch (hfp_gsm_call_status()){ 1349 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1350 switch (hfp_gsm_callsetup_status()){ 1351 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1352 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1353 hfp_ag_response_and_hold_active = 1; 1354 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1355 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1356 // as with regualr call 1357 hfp_ag_set_call_indicator(); 1358 hfp_ag_set_callsetup_indicator(); 1359 hfp_ag_hf_accept_call(hfp_connection); 1360 log_info("AG response and hold - hold by HF"); 1361 break; 1362 default: 1363 break; 1364 } 1365 break; 1366 default: 1367 break; 1368 } 1369 break; 1370 1371 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1372 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1373 if (!hfp_ag_response_and_hold_active) break; 1374 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1375 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1376 hfp_ag_response_and_hold_active = 0; 1377 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1378 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1379 log_info("Held Call accepted and active"); 1380 break; 1381 1382 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1383 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1384 if (!hfp_ag_response_and_hold_active) break; 1385 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1386 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1387 hfp_ag_response_and_hold_active = 0; 1388 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1389 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1390 // from terminate by ag 1391 hfp_ag_set_call_indicator(); 1392 hfp_ag_trigger_terminate_call(); 1393 break; 1394 1395 case HFP_AG_TERMINATE_CALL_BY_HF: 1396 switch (hfp_gsm_call_status()){ 1397 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1398 switch (hfp_gsm_callsetup_status()){ 1399 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1400 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1401 hfp_ag_set_callsetup_indicator(); 1402 hfp_ag_transfer_callsetup_state(); 1403 hfp_ag_trigger_reject_call(); 1404 log_info("HF Rejected Incoming call, AG terminate call"); 1405 break; 1406 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1407 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1408 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1409 hfp_ag_set_callsetup_indicator(); 1410 hfp_ag_transfer_callsetup_state(); 1411 log_info("AG terminate outgoing call process"); 1412 break; 1413 default: 1414 break; 1415 } 1416 break; 1417 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1418 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1419 hfp_ag_set_callsetup_indicator(); 1420 hfp_ag_set_call_indicator(); 1421 hfp_ag_trigger_terminate_call(); 1422 log_info("AG terminate call"); 1423 break; 1424 default: 1425 break; 1426 } 1427 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1428 break; 1429 1430 case HFP_AG_TERMINATE_CALL_BY_AG: 1431 switch (hfp_gsm_call_status()){ 1432 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1433 switch (hfp_gsm_callsetup_status()){ 1434 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1435 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1436 hfp_ag_set_callsetup_indicator(); 1437 hfp_ag_trigger_reject_call(); 1438 log_info("AG Rejected Incoming call, AG terminate call"); 1439 break; 1440 default: 1441 break; 1442 } 1443 break; 1444 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1445 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1446 hfp_ag_set_callsetup_indicator(); 1447 hfp_ag_set_call_indicator(); 1448 hfp_ag_trigger_terminate_call(); 1449 log_info("AG terminate call"); 1450 break; 1451 default: 1452 break; 1453 } 1454 break; 1455 case HFP_AG_CALL_DROPPED: 1456 switch (hfp_gsm_call_status()){ 1457 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1458 switch (hfp_gsm_callsetup_status()){ 1459 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1460 hfp_ag_stop_ringing(); 1461 log_info("Incoming call interrupted"); 1462 break; 1463 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1464 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1465 log_info("Outgoing call interrupted\n"); 1466 log_info("AG notify call dropped\n"); 1467 break; 1468 default: 1469 break; 1470 } 1471 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1472 hfp_ag_set_callsetup_indicator(); 1473 hfp_ag_transfer_callsetup_state(); 1474 hfp_ag_trigger_terminate_call(); 1475 break; 1476 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1477 if (hfp_ag_response_and_hold_active) { 1478 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1479 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1480 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1481 } 1482 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1483 hfp_ag_set_callsetup_indicator(); 1484 hfp_ag_set_call_indicator(); 1485 hfp_ag_trigger_terminate_call(); 1486 log_info("AG notify call dropped"); 1487 break; 1488 default: 1489 break; 1490 } 1491 break; 1492 1493 case HFP_AG_OUTGOING_CALL_INITIATED_BY_HF: 1494 // directly reject call if number of free slots is exceeded 1495 if (!hfp_gsm_call_possible()){ 1496 hfp_connection->send_error = 1; 1497 hfp_ag_run_for_context(hfp_connection); 1498 break; 1499 } 1500 1501 // note: number not used currently 1502 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1503 1504 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1505 1506 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1507 break; 1508 1509 case HFP_AG_OUTGOING_CALL_INITIATED_BY_AG: 1510 // directly reject call if number of free slots is exceeded 1511 if (!hfp_gsm_call_possible()) { 1512 // TODO: no error for user 1513 break; 1514 } 1515 switch (hfp_gsm_call_status()) { 1516 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1517 switch (hfp_gsm_callsetup_status()) { 1518 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1519 // note: number not used currently 1520 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, 0, 0, "1234567"); 1521 // init call state for all connections 1522 hfp_ag_trigger_outgoing_call(); 1523 // get first one and accept call 1524 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1525 if (hfp_connection) { 1526 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1527 } 1528 break; 1529 default: 1530 // TODO: no error for user 1531 break; 1532 } 1533 break; 1534 default: 1535 // TODO: no error for user 1536 break; 1537 } 1538 break; 1539 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1540 // directly reject call if number of free slots is exceeded 1541 if (!hfp_gsm_call_possible()){ 1542 hfp_connection->send_error = 1; 1543 hfp_ag_run_for_context(hfp_connection); 1544 break; 1545 } 1546 1547 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1548 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1549 1550 log_info("Redial last number"); 1551 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1552 1553 if (strlen(last_dialed_number) > 0){ 1554 log_info("Last number exists: accept call"); 1555 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1556 } else { 1557 log_info("log_infoLast number missing: reject call"); 1558 hfp_ag_handle_reject_outgoing_call(); 1559 } 1560 break; 1561 } 1562 case HFP_AG_OUTGOING_CALL_REJECTED: 1563 hfp_ag_handle_reject_outgoing_call(); 1564 break; 1565 1566 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1567 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1568 if (!hfp_connection){ 1569 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1570 break; 1571 } 1572 1573 hfp_connection->ok_pending = 1; 1574 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1575 break; 1576 } 1577 case HFP_AG_OUTGOING_CALL_RINGING: 1578 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1579 if (!hfp_connection){ 1580 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1581 break; 1582 } 1583 1584 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1585 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1586 hfp_ag_set_callsetup_indicator(); 1587 hfp_ag_transfer_callsetup_state(); 1588 break; 1589 1590 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1591 // get outgoing call 1592 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1593 if (!hfp_connection){ 1594 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1595 } 1596 if (!hfp_connection){ 1597 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1598 break; 1599 } 1600 1601 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1602 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1603 hfp_connection->call_state = HFP_CALL_ACTIVE; 1604 hfp_ag_set_callsetup_indicator(); 1605 hfp_ag_set_call_indicator(); 1606 hfp_ag_transfer_call_state(); 1607 hfp_ag_transfer_callsetup_state(); 1608 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1609 hfp_ag_set_callheld_indicator(); 1610 hfp_ag_transfer_callheld_state(); 1611 } 1612 break; 1613 } 1614 1615 case HFP_AG_CALL_HOLD_USER_BUSY: 1616 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1617 hfp_ag_set_callsetup_indicator(); 1618 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1619 hfp_connection->call_state = HFP_CALL_ACTIVE; 1620 log_info("AG: Call Waiting, User Busy"); 1621 break; 1622 1623 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1624 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1625 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1626 1627 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1628 if (call_held || call_setup_in_progress){ 1629 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1630 0, NULL); 1631 1632 } 1633 1634 if (call_setup_in_progress){ 1635 log_info("AG: Call Dropped, Accept new call"); 1636 hfp_ag_set_callsetup_indicator(); 1637 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1638 } else { 1639 log_info("AG: Call Dropped, Resume held call"); 1640 } 1641 if (call_held){ 1642 hfp_ag_set_callheld_indicator(); 1643 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1644 } 1645 1646 hfp_connection->call_state = HFP_CALL_ACTIVE; 1647 break; 1648 } 1649 1650 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1651 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1652 // only update if callsetup changed 1653 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1654 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1655 NULL); 1656 1657 if (call_setup_in_progress){ 1658 log_info("AG: Call on Hold, Accept new call"); 1659 hfp_ag_set_callsetup_indicator(); 1660 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1661 } else { 1662 log_info("AG: Swap calls"); 1663 } 1664 1665 hfp_ag_set_callheld_indicator(); 1666 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1667 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1668 hfp_connection->call_state = HFP_CALL_ACTIVE; 1669 break; 1670 } 1671 1672 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1673 // Adds a held call to the conversation. 1674 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1675 log_info("AG: Join 3-way-call"); 1676 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1677 hfp_ag_set_callheld_indicator(); 1678 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1679 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1680 } 1681 hfp_connection->call_state = HFP_CALL_ACTIVE; 1682 break; 1683 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1684 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1685 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1686 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1687 hfp_ag_set_call_indicator(); 1688 hfp_ag_set_callheld_indicator(); 1689 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1690 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1691 hfp_connection->call_state = HFP_CALL_IDLE; 1692 break; 1693 1694 default: 1695 break; 1696 } 1697 1698 1699 } 1700 1701 1702 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1703 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1704 if (!active_call) return; 1705 1706 int idx = active_call->index; 1707 hfp_enhanced_call_dir_t dir = active_call->direction; 1708 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1709 hfp_enhanced_call_mode_t mode = active_call->mode; 1710 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1711 uint8_t type = active_call->clip_type; 1712 char * number = active_call->clip_number; 1713 1714 char buffer[100]; 1715 // TODO: check length of a buffer, to fit the MTU 1716 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1717 if (number){ 1718 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1719 } 1720 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1721 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, 1722 mode, mpty, type, number); 1723 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1724 } 1725 1726 1727 // sends pending command, returns if command was sent 1728 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1729 1730 if (hfp_connection->send_status_of_current_calls){ 1731 hfp_connection->ok_pending = 0; 1732 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1733 hfp_connection->next_call_index++; 1734 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1735 return 1; 1736 } else { 1737 // 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 1738 hfp_connection->next_call_index = 0; 1739 hfp_connection->ok_pending = 1; 1740 hfp_connection->send_status_of_current_calls = 0; 1741 } 1742 } 1743 1744 if (hfp_connection->ag_notify_incoming_call_waiting){ 1745 hfp_connection->ag_notify_incoming_call_waiting = 0; 1746 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1747 return 1; 1748 } 1749 1750 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1751 hfp_connection->ok_pending = 0; 1752 hfp_connection->send_error = 0; 1753 hfp_connection->command = HFP_CMD_NONE; 1754 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1755 return 1; 1756 } 1757 1758 if (hfp_connection->send_error){ 1759 hfp_connection->send_error = 0; 1760 hfp_connection->command = HFP_CMD_NONE; 1761 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1762 return 1; 1763 } 1764 1765 // note: before update AG indicators and ok_pending 1766 if (hfp_connection->send_response_and_hold_status){ 1767 int status = hfp_connection->send_response_and_hold_status - 1; 1768 hfp_connection->send_response_and_hold_status = 0; 1769 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1770 return 1; 1771 } 1772 1773 if (hfp_connection->ok_pending){ 1774 hfp_connection->ok_pending = 0; 1775 hfp_connection->command = HFP_CMD_NONE; 1776 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1777 return 1; 1778 } 1779 1780 // update AG indicators 1781 if (hfp_connection->ag_indicators_status_update_bitmap){ 1782 int i; 1783 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1784 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1785 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1786 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1787 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1788 break; 1789 } 1790 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1791 return 1; 1792 } 1793 } 1794 } 1795 1796 if (hfp_connection->ag_send_no_carrier){ 1797 hfp_connection->ag_send_no_carrier = false; 1798 hfp_ag_send_no_carrier(hfp_connection->rfcomm_cid); 1799 return 1; 1800 } 1801 1802 if (hfp_connection->ag_ring){ 1803 hfp_connection->ag_ring = 0; 1804 hfp_connection->command = HFP_CMD_NONE; 1805 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1806 return 1; 1807 } 1808 1809 if (hfp_connection->ag_send_clip){ 1810 hfp_connection->ag_send_clip = 0; 1811 hfp_connection->command = HFP_CMD_NONE; 1812 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1813 return 1; 1814 } 1815 1816 if (hfp_connection->send_phone_number_for_voice_tag){ 1817 hfp_connection->send_phone_number_for_voice_tag = 0; 1818 hfp_connection->command = HFP_CMD_NONE; 1819 hfp_connection->ok_pending = 1; 1820 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1821 return 1; 1822 } 1823 1824 if (hfp_connection->send_subscriber_number){ 1825 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1826 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1827 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1828 } else { 1829 hfp_connection->send_subscriber_number = 0; 1830 hfp_connection->next_subscriber_number_to_send = 0; 1831 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1832 } 1833 hfp_connection->command = HFP_CMD_NONE; 1834 return 1; 1835 } 1836 1837 if (hfp_connection->send_microphone_gain){ 1838 hfp_connection->send_microphone_gain = 0; 1839 hfp_connection->command = HFP_CMD_NONE; 1840 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1841 return 1; 1842 } 1843 1844 if (hfp_connection->send_speaker_gain){ 1845 hfp_connection->send_speaker_gain = 0; 1846 hfp_connection->command = HFP_CMD_NONE; 1847 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1848 return 1; 1849 } 1850 1851 if (hfp_connection->send_ag_status_indicators){ 1852 hfp_connection->send_ag_status_indicators = 0; 1853 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1854 return 1; 1855 } 1856 1857 return 0; 1858 } 1859 1860 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1861 1862 btstack_assert(hfp_connection != NULL); 1863 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1864 1865 // during SDP query, RFCOMM CID is not set 1866 if (hfp_connection->rfcomm_cid == 0) return; 1867 1868 // assert command could be sent 1869 if (hci_can_send_command_packet_now() == 0) return; 1870 1871 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 1872 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 1873 hfp_connection->release_audio_connection = 0; 1874 gap_disconnect(hfp_connection->sco_handle); 1875 return; 1876 } 1877 1878 #ifdef ENABLE_CC256X_ASSISTED_HFP 1879 // WBS Disassociate 1880 if (hfp_connection->cc256x_send_wbs_disassociate){ 1881 hfp_connection->cc256x_send_wbs_disassociate = false; 1882 hci_send_cmd(&hci_ti_wbs_disassociate); 1883 return; 1884 } 1885 // Write Codec Config 1886 if (hfp_connection->cc256x_send_write_codec_config){ 1887 hfp_connection->cc256x_send_write_codec_config = false; 1888 hfp_cc256x_write_codec_config(hfp_connection); 1889 return; 1890 } 1891 // WBS Associate 1892 if (hfp_connection->cc256x_send_wbs_associate){ 1893 hfp_connection->cc256x_send_wbs_associate = false; 1894 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 1895 return; 1896 } 1897 #endif 1898 #ifdef ENABLE_BCM_PCM_WBS 1899 // Enable WBS 1900 if (hfp_connection->bcm_send_enable_wbs){ 1901 hfp_connection->bcm_send_enable_wbs = false; 1902 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 1903 return; 1904 } 1905 // Write I2S/PCM params 1906 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 1907 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 1908 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 1909 return; 1910 } 1911 // Disable WBS 1912 if (hfp_connection->bcm_send_disable_wbs){ 1913 hfp_connection->bcm_send_disable_wbs = false; 1914 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 1915 return; 1916 } 1917 #endif 1918 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 1919 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 1920 hfp_finalize_connection_context(hfp_connection); 1921 return; 1922 } 1923 #endif 1924 1925 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1926 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1927 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1928 return; 1929 } 1930 1931 int cmd_sent = hfp_ag_send_commands(hfp_connection); 1932 1933 if (!cmd_sent){ 1934 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1935 } 1936 1937 if (!cmd_sent){ 1938 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1939 } 1940 1941 if (!cmd_sent){ 1942 cmd_sent = call_setup_state_machine(hfp_connection); 1943 } 1944 1945 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 1946 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 1947 switch (hfp_connection->codecs_state){ 1948 case HFP_CODECS_IDLE: 1949 case HFP_CODECS_RECEIVED_LIST: 1950 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1951 case HFP_CODECS_ERROR: 1952 hfp_connection->trigger_codec_exchange = 0; 1953 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1954 break; 1955 default: 1956 break; 1957 } 1958 } 1959 1960 if (!cmd_sent){ 1961 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1962 } 1963 1964 1965 // disconnect 1966 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 1967 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1968 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1969 } 1970 1971 if (cmd_sent){ 1972 hfp_connection->command = HFP_CMD_NONE; 1973 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1974 } 1975 } 1976 1977 static int hfp_parser_is_end_of_line(uint8_t byte){ 1978 return (byte == '\n') || (byte == '\r'); 1979 } 1980 1981 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1982 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1983 1984 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1985 if (size < 1) return; 1986 1987 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1988 if (!hfp_connection) return; 1989 1990 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 1991 #ifdef ENABLE_HFP_AT_MESSAGES 1992 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1993 #endif 1994 1995 // process messages byte-wise 1996 int pos; 1997 for (pos = 0; pos < size ; pos++){ 1998 hfp_parse(hfp_connection, packet[pos], 0); 1999 2000 // parse until end of line 2001 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 2002 2003 hfp_generic_status_indicator_t * indicator; 2004 switch(hfp_connection->command){ 2005 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 2006 if (hfp_connection->ag_activate_voice_recognition == 0){ 2007 hfp_release_audio_connection(hfp_connection); 2008 } 2009 break; 2010 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 2011 if (hfp_ag_response_and_hold_active){ 2012 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 2013 } 2014 hfp_connection->ok_pending = 1; 2015 break; 2016 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 2017 switch(hfp_connection->ag_response_and_hold_action){ 2018 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 2019 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 2020 break; 2021 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 2022 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 2023 break; 2024 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 2025 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 2026 break; 2027 default: 2028 break; 2029 } 2030 hfp_connection->ok_pending = 1; 2031 break; 2032 case HFP_CMD_HF_INDICATOR_STATUS: 2033 hfp_connection->command = HFP_CMD_NONE; 2034 if (hfp_connection->parser_indicator_index < hfp_generic_status_indicators_nr){ 2035 indicator = &hfp_generic_status_indicators[hfp_connection->parser_indicator_index]; 2036 } else { 2037 hfp_connection->send_error = 1; 2038 break; 2039 } 2040 switch (indicator->uuid){ 2041 case 1: // enhanced security 2042 if (hfp_connection->parser_indicator_value > 1) { 2043 hfp_connection->send_error = 1; 2044 return; 2045 } 2046 log_info("HF Indicator 'enhanced security' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2047 break; 2048 case 2: // battery level 2049 if (hfp_connection->parser_indicator_value > 100){ 2050 hfp_connection->send_error = 1; 2051 return; 2052 } 2053 log_info("HF Indicator 'battery' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2054 break; 2055 default: 2056 log_info("HF Indicator unknown set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2057 break; 2058 } 2059 hfp_connection->ok_pending = 1; 2060 break; 2061 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 2062 // expected by SLC state machine 2063 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 2064 hfp_connection->send_ag_indicators_segment = 0; 2065 hfp_connection->send_ag_status_indicators = 1; 2066 break; 2067 case HFP_CMD_LIST_CURRENT_CALLS: 2068 hfp_connection->command = HFP_CMD_NONE; 2069 hfp_connection->next_call_index = 0; 2070 hfp_connection->send_status_of_current_calls = 1; 2071 break; 2072 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 2073 if (subscriber_numbers_count == 0){ 2074 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2075 break; 2076 } 2077 hfp_connection->next_subscriber_number_to_send = 0; 2078 hfp_connection->send_subscriber_number = 1; 2079 break; 2080 case HFP_CMD_TRANSMIT_DTMF_CODES: 2081 { 2082 hfp_connection->command = HFP_CMD_NONE; 2083 char buffer[2]; 2084 buffer[0] = (char) hfp_connection->ag_dtmf_code; 2085 buffer[1] = 0; 2086 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 2087 break; 2088 } 2089 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 2090 hfp_connection->command = HFP_CMD_NONE; 2091 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 2092 break; 2093 case HFP_CMD_TURN_OFF_EC_AND_NR: 2094 hfp_connection->command = HFP_CMD_NONE; 2095 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 2096 hfp_connection->ok_pending = 1; 2097 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 2098 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 2099 } else { 2100 hfp_connection->send_error = 1; 2101 } 2102 break; 2103 case HFP_CMD_CALL_ANSWERED: 2104 hfp_connection->command = HFP_CMD_NONE; 2105 log_info("HFP: ATA"); 2106 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 2107 break; 2108 case HFP_CMD_HANG_UP_CALL: 2109 hfp_connection->command = HFP_CMD_NONE; 2110 hfp_connection->ok_pending = 1; 2111 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 2112 break; 2113 case HFP_CMD_CALL_HOLD: { 2114 hfp_connection->command = HFP_CMD_NONE; 2115 hfp_connection->ok_pending = 1; 2116 2117 switch (hfp_connection->ag_call_hold_action){ 2118 case 0: 2119 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2120 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2121 break; 2122 case 1: 2123 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2124 // Where both a held and a waiting call exist, the above procedures shall apply to the 2125 // waiting call (i.e., not to the held call) in conflicting situation. 2126 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2127 break; 2128 case 2: 2129 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2130 // Where both a held and a waiting call exist, the above procedures shall apply to the 2131 // waiting call (i.e., not to the held call) in conflicting situation. 2132 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2133 break; 2134 case 3: 2135 // Adds a held call to the conversation. 2136 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2137 break; 2138 case 4: 2139 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2140 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2141 break; 2142 default: 2143 break; 2144 } 2145 hfp_connection->call_index = 0; 2146 break; 2147 } 2148 case HFP_CMD_CALL_PHONE_NUMBER: 2149 hfp_connection->command = HFP_CMD_NONE; 2150 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, hfp_connection); 2151 break; 2152 case HFP_CMD_REDIAL_LAST_NUMBER: 2153 hfp_connection->command = HFP_CMD_NONE; 2154 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2155 break; 2156 case HFP_CMD_ENABLE_CLIP: 2157 hfp_connection->command = HFP_CMD_NONE; 2158 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2159 hfp_connection->ok_pending = 1; 2160 break; 2161 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2162 hfp_connection->command = HFP_CMD_NONE; 2163 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2164 hfp_connection->ok_pending = 1; 2165 break; 2166 case HFP_CMD_SET_SPEAKER_GAIN: 2167 hfp_connection->command = HFP_CMD_NONE; 2168 hfp_connection->ok_pending = 1; 2169 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2170 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2171 break; 2172 case HFP_CMD_SET_MICROPHONE_GAIN: 2173 hfp_connection->command = HFP_CMD_NONE; 2174 hfp_connection->ok_pending = 1; 2175 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2176 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2177 break; 2178 default: 2179 break; 2180 } 2181 } 2182 } 2183 2184 static void hfp_ag_run(void){ 2185 btstack_linked_list_iterator_t it; 2186 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2187 while (btstack_linked_list_iterator_has_next(&it)){ 2188 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2189 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2190 hfp_ag_run_for_context(hfp_connection); 2191 } 2192 } 2193 2194 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2195 switch (packet_type){ 2196 case RFCOMM_DATA_PACKET: 2197 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 2198 break; 2199 case HCI_EVENT_PACKET: 2200 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2201 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2202 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2203 return; 2204 } 2205 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2206 break; 2207 default: 2208 break; 2209 } 2210 2211 hfp_ag_run(); 2212 } 2213 2214 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2215 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2216 hfp_ag_run(); 2217 } 2218 2219 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2220 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2221 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2222 return; 2223 } 2224 int i; 2225 hfp_codecs_nr = codecs_nr; 2226 for (i=0; i < codecs_nr; i++){ 2227 hfp_codecs[i] = codecs[i]; 2228 } 2229 } 2230 2231 void hfp_ag_init_supported_features(uint32_t supported_features){ 2232 hfp_supported_features = supported_features; 2233 } 2234 2235 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2236 hfp_ag_indicators_nr = ag_indicators_nr; 2237 (void)memcpy(hfp_ag_indicators, ag_indicators, 2238 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2239 } 2240 2241 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2242 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2243 hfp_generic_status_indicators_nr = hf_indicators_nr; 2244 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2245 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2246 } 2247 2248 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2249 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2250 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2251 call_hold_services_nr * sizeof(char *)); 2252 } 2253 2254 2255 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2256 2257 hfp_init(); 2258 hfp_ag_call_hold_services_nr = 0; 2259 hfp_ag_response_and_hold_active = 0; 2260 hfp_ag_indicators_nr = 0; 2261 hfp_codecs_nr = 0; 2262 hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2263 subscriber_numbers = NULL; 2264 subscriber_numbers_count = 0; 2265 2266 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2267 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2268 2269 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2270 2271 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2272 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2273 2274 hfp_gsm_init(); 2275 } 2276 2277 void hfp_ag_deinit(void){ 2278 hfp_deinit(); 2279 hfp_gsm_deinit(); 2280 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2281 (void) memset(&hfp_ag_callback, 0, sizeof(btstack_packet_handler_t)); 2282 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2283 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2284 } 2285 2286 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2287 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2288 } 2289 2290 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2291 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2292 if (!hfp_connection){ 2293 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2294 return; 2295 } 2296 hfp_release_service_level_connection(hfp_connection); 2297 hfp_ag_run_for_context(hfp_connection); 2298 } 2299 2300 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2301 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2302 if (!hfp_connection){ 2303 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2304 return; 2305 } 2306 hfp_connection->extended_audio_gateway_error = 0; 2307 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2308 return; 2309 } 2310 hfp_connection->extended_audio_gateway_error = error; 2311 hfp_ag_run_for_context(hfp_connection); 2312 } 2313 2314 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2315 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2316 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2317 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2318 2319 hfp_connection->establish_audio_connection = 1; 2320 if (!has_codec_negotiation_feature(hfp_connection)){ 2321 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2322 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2323 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2324 // now, pick link settings 2325 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2326 #ifdef ENABLE_CC256X_ASSISTED_HFP 2327 hfp_cc256x_prepare_for_sco(hfp_connection); 2328 #endif 2329 return; 2330 } 2331 2332 uint8_t i; 2333 bool codec_was_in_use = false; 2334 bool better_codec_can_be_used = false; 2335 2336 for (i = 0; i<hfp_connection->remote_codecs_nr; i++){ 2337 if (hfp_connection->negotiated_codec == hfp_connection->remote_codecs[i]){ 2338 codec_was_in_use = true; 2339 } else if (hfp_connection->negotiated_codec < hfp_connection->remote_codecs[i]){ 2340 better_codec_can_be_used = true; 2341 } 2342 } 2343 2344 if (!codec_was_in_use || better_codec_can_be_used){ 2345 hfp_connection->trigger_codec_exchange = 1; 2346 hfp_connection->codecs_state = HFP_CODECS_IDLE; 2347 } 2348 } 2349 2350 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2351 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2352 if (!hfp_connection){ 2353 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2354 return; 2355 } 2356 2357 hfp_connection->establish_audio_connection = 0; 2358 hfp_ag_setup_audio_connection(hfp_connection); 2359 hfp_ag_run_for_context(hfp_connection); 2360 } 2361 2362 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2363 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2364 if (!hfp_connection){ 2365 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2366 return; 2367 } 2368 hfp_release_audio_connection(hfp_connection); 2369 hfp_ag_run_for_context(hfp_connection); 2370 } 2371 2372 /** 2373 * @brief Enable in-band ring tone 2374 */ 2375 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2376 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2377 return; 2378 } 2379 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2380 2381 btstack_linked_list_iterator_t it; 2382 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2383 while (btstack_linked_list_iterator_has_next(&it)){ 2384 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2385 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2386 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2387 hfp_ag_run_for_context(hfp_connection); 2388 } 2389 } 2390 2391 /** 2392 * @brief Called from GSM 2393 */ 2394 void hfp_ag_incoming_call(void){ 2395 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2396 } 2397 2398 void hfp_ag_outgoing_call_initiated(const char * number) { 2399 UNUSED(number); 2400 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, NULL); 2401 } 2402 2403 /** 2404 * @brief number is stored. 2405 */ 2406 void hfp_ag_set_clip(uint8_t type, const char * number){ 2407 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2408 } 2409 2410 void hfp_ag_call_dropped(void){ 2411 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2412 } 2413 2414 // call from AG UI 2415 void hfp_ag_answer_incoming_call(void){ 2416 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2417 } 2418 2419 void hfp_ag_join_held_call(void){ 2420 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2421 } 2422 2423 void hfp_ag_terminate_call(void){ 2424 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2425 } 2426 2427 void hfp_ag_outgoing_call_ringing(void){ 2428 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2429 } 2430 2431 void hfp_ag_outgoing_call_established(void){ 2432 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2433 } 2434 2435 void hfp_ag_outgoing_call_rejected(void){ 2436 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2437 } 2438 2439 void hfp_ag_outgoing_call_accepted(void){ 2440 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2441 } 2442 2443 void hfp_ag_hold_incoming_call(void){ 2444 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2445 } 2446 2447 void hfp_ag_accept_held_incoming_call(void) { 2448 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2449 } 2450 2451 void hfp_ag_reject_held_incoming_call(void){ 2452 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2453 } 2454 2455 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2456 int indicator_index = get_ag_indicator_index_for_name(name); 2457 if (indicator_index < 0) return; 2458 hfp_ag_indicators[indicator_index].status = value; 2459 2460 btstack_linked_list_iterator_t it; 2461 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2462 while (btstack_linked_list_iterator_has_next(&it)){ 2463 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2464 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2465 if (!hfp_connection->ag_indicators[indicator_index].enabled) { 2466 log_info("Requested AG indicator '%s' update to %u, but it is not enabled", hfp_ag_indicators[indicator_index].name, value); 2467 continue; 2468 } 2469 log_info("AG indicator '%s' changed to %u, request transfer status", hfp_ag_indicators[indicator_index].name, value); 2470 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2471 hfp_ag_run_for_context(hfp_connection); 2472 } 2473 } 2474 2475 void hfp_ag_set_registration_status(int status){ 2476 if ( (status == 0) && (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 2477 2478 // if network goes away wihle a call is active: 2479 // - the call gets dropped 2480 // - we send NO CARRIER 2481 // NOTE: the CALL=0 has to be sent before NO CARRIER 2482 2483 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2484 2485 btstack_linked_list_iterator_t it; 2486 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2487 while (btstack_linked_list_iterator_has_next(&it)){ 2488 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2489 hfp_connection->ag_send_no_carrier = true; 2490 } 2491 } 2492 hfp_ag_set_ag_indicator("service", status); 2493 } 2494 2495 void hfp_ag_set_signal_strength(int strength){ 2496 hfp_ag_set_ag_indicator("signal", strength); 2497 } 2498 2499 void hfp_ag_set_roaming_status(int status){ 2500 hfp_ag_set_ag_indicator("roam", status); 2501 } 2502 2503 void hfp_ag_set_battery_level(int level){ 2504 hfp_ag_set_ag_indicator("battchg", level); 2505 } 2506 2507 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2508 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2509 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2510 if (!hfp_connection){ 2511 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2512 return; 2513 } 2514 2515 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2516 log_info("AG cannot acivate voice recognition - not supported by HF"); 2517 return; 2518 } 2519 2520 hfp_connection->ag_activate_voice_recognition = activate; 2521 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2522 hfp_ag_run_for_context(hfp_connection); 2523 } 2524 2525 void hfp_ag_enhanced_voice_recognition_activate(hci_con_handle_t acl_handle){ 2526 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2527 2528 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2529 if (!hfp_connection){ 2530 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2531 return; 2532 } 2533 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) return; 2534 2535 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2536 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2537 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 2538 hfp_ag_run_for_context(hfp_connection); 2539 } 2540 2541 void hfp_ag_enhanced_voice_recognition_deactivate(hci_con_handle_t acl_handle){ 2542 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2543 2544 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2545 if (!hfp_connection){ 2546 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2547 return; 2548 } 2549 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) return; 2550 2551 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2552 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2553 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_OFF; 2554 hfp_ag_run_for_context(hfp_connection); 2555 } 2556 2557 void hfp_ag_enhanced_voice_recognition_status(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state){ 2558 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2559 2560 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2561 if (!hfp_connection){ 2562 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2563 return; 2564 } 2565 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) return; 2566 2567 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2568 hfp_connection->ag_vra_state = state; 2569 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_STATUS; 2570 hfp_ag_run_for_context(hfp_connection); 2571 } 2572 2573 void hfp_ag_enhanced_voice_recognition_starting_sound(hci_con_handle_t acl_handle){ 2574 hfp_ag_enhanced_voice_recognition_status(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_SENDING_AUDIO_TO_HF); 2575 } 2576 void hfp_ag_enhanced_voice_recognition_ready_for_input(hci_con_handle_t acl_handle){ 2577 hfp_ag_enhanced_voice_recognition_status(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_READY_TO_ACCEPT_AUDIO_INPUT); 2578 } 2579 void hfp_ag_enhanced_voice_recognition_processing_input(hci_con_handle_t acl_handle){ 2580 hfp_ag_enhanced_voice_recognition_status(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_PROCESSING_AUDIO_INPUT); 2581 } 2582 2583 void hfp_ag_enhanced_voice_recognition_message(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state, hfp_voice_recognition_message_t msg){ 2584 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2585 2586 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2587 if (!hfp_connection){ 2588 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2589 return; 2590 } 2591 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) return; 2592 2593 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2594 hfp_connection->ag_vra_state = state; 2595 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_MSG; 2596 hfp_connection->ag_msg = msg; 2597 hfp_ag_run_for_context(hfp_connection); 2598 } 2599 2600 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2601 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2602 if (!hfp_connection){ 2603 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2604 return; 2605 } 2606 if (hfp_connection->microphone_gain != gain){ 2607 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2608 hfp_connection->microphone_gain = gain; 2609 hfp_connection->send_microphone_gain = 1; 2610 } 2611 hfp_ag_run_for_context(hfp_connection); 2612 } 2613 2614 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2615 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2616 if (!hfp_connection){ 2617 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2618 return; 2619 } 2620 if (hfp_connection->speaker_gain != gain){ 2621 hfp_connection->speaker_gain = gain; 2622 hfp_connection->send_speaker_gain = 1; 2623 } 2624 hfp_ag_run_for_context(hfp_connection); 2625 } 2626 2627 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2628 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2629 if (!hfp_connection){ 2630 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2631 return; 2632 } 2633 hfp_ag_set_clip(0, number); 2634 hfp_connection->send_phone_number_for_voice_tag = 1; 2635 } 2636 2637 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2638 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2639 if (!hfp_connection){ 2640 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2641 return; 2642 } 2643 hfp_connection->send_error = 1; 2644 } 2645 2646 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2647 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2648 if (!hfp_connection){ 2649 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2650 return; 2651 } 2652 hfp_connection->ok_pending = 1; 2653 } 2654 2655 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2656 subscriber_numbers = numbers; 2657 subscriber_numbers_count = numbers_count; 2658 } 2659 2660 void hfp_ag_clear_last_dialed_number(void){ 2661 hfp_gsm_clear_last_dialed_number(); 2662 } 2663 2664 void hfp_ag_set_last_dialed_number(const char * number){ 2665 hfp_gsm_set_last_dialed_number(number); 2666 } 2667 2668 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2669 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2670 if (!hfp_connection){ 2671 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2672 return; 2673 } 2674 if (!hfp_connection->call_waiting_notification_enabled) return; 2675 2676 hfp_connection->ag_notify_incoming_call_waiting = 1; 2677 hfp_ag_run_for_context(hfp_connection); 2678 } 2679 2680 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){ 2681 if (!name){ 2682 name = default_hfp_ag_service_name; 2683 } 2684 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2685 2686 /* 2687 * 0x01 – Ability to reject a call 2688 * 0x00 – No ability to reject a call 2689 */ 2690 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2691 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2692 2693 // Construct SupportedFeatures for SDP bitmap: 2694 // 2695 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2696 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2697 // 2698 // Wide band speech (bit 5) requires Codec negotiation 2699 // 2700 uint16_t sdp_features = supported_features & 0x1f; 2701 if ( (wide_band_speech == 1) && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2702 sdp_features |= 1 << 5; 2703 } 2704 2705 if (supported_features & (1 << HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2706 sdp_features |= 1 << 6; 2707 } 2708 2709 if (supported_features & (1 << HFP_AGSF_VOICE_RECOGNITION_TEXT)){ 2710 sdp_features |= 1 << 7; 2711 } 2712 2713 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2714 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2715 } 2716 2717 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2718 if (callback == NULL){ 2719 log_error("hfp_ag_register_packet_handler called with NULL callback"); 2720 return; 2721 } 2722 hfp_ag_callback = callback; 2723 hfp_set_ag_callback(callback); 2724 } 2725