1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hfp_ag.c" 39 40 // ***************************************************************************** 41 // 42 // HFP Audio Gateway (AG) unit 43 // 44 // ***************************************************************************** 45 46 #include "btstack_config.h" 47 48 #include <stdint.h> 49 #include <stdio.h> 50 #include <string.h> 51 52 #include "hci_cmd.h" 53 #include "btstack_run_loop.h" 54 55 #include "bluetooth_sdp.h" 56 #include "hci.h" 57 #include "btstack_memory.h" 58 #include "hci_dump.h" 59 #include "l2cap.h" 60 #include "btstack_debug.h" 61 #include "btstack_event.h" 62 #include "classic/core.h" 63 #include "classic/hfp.h" 64 #include "classic/hfp_ag.h" 65 #include "classic/hfp_gsm_model.h" 66 #include "classic/sdp_client_rfcomm.h" 67 #include "classic/sdp_server.h" 68 #include "classic/sdp_util.h" 69 70 // private prototypes 71 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection); 72 static void hfp_ag_hf_start_ringing_incoming(hfp_connection_t * hfp_connection); 73 static void hfp_ag_hf_start_ringing_outgoing(hfp_connection_t * hfp_connection); 74 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 75 76 // public prototypes 77 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 78 int get_hfp_generic_status_indicators_nr(void); 79 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 80 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 81 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 82 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 83 84 #define HFP_SUBEVENT_INVALID 0xFFFF 85 86 // const 87 static const char hfp_ag_default_service_name[] = "Voice gateway"; 88 89 // globals 90 91 // higher layer callbacks 92 static btstack_packet_handler_t hfp_ag_callback; 93 94 static btstack_packet_callback_registration_t hfp_ag_hci_event_callback_registration; 95 96 static uint16_t hfp_ag_supported_features; 97 98 // codecs 99 static uint8_t hfp_ag_codecs_nr; 100 static uint8_t hfp_ag_codecs[HFP_MAX_NUM_CODECS]; 101 102 // AG indicators 103 static int hfp_ag_indicators_nr; 104 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_INDICATORS]; 105 106 // generic status indicators 107 static int hfp_ag_generic_status_indicators_nr; 108 static hfp_generic_status_indicator_t hfp_ag_generic_status_indicators[HFP_MAX_NUM_INDICATORS]; 109 110 static int hfp_ag_call_hold_services_nr; 111 static char * hfp_ag_call_hold_services[6]; 112 113 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 114 static int hfp_ag_response_and_hold_active; 115 116 // Subscriber information entries 117 static hfp_phone_number_t * hfp_ag_subscriber_numbers; 118 static int hfp_ag_subscriber_numbers_count; 119 120 // call state 121 static btstack_timer_source_t hfp_ag_ring_timeout; 122 123 // code 124 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 125 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 126 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 127 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 128 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 129 } 130 return hfp_connection->ag_indicators_nr; 131 } 132 133 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 134 // TODO: save only value, and value changed in the hfp_connection? 135 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 136 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 137 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 138 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 139 } 140 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 141 } 142 143 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 144 int i; 145 for (i = 0; i < hfp_ag_indicators_nr; i++){ 146 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 147 return &hfp_ag_indicators[i]; 148 } 149 } 150 return NULL; 151 } 152 153 static int get_ag_indicator_index_for_name(const char * name){ 154 int i; 155 for (i = 0; i < hfp_ag_indicators_nr; i++){ 156 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 157 return i; 158 } 159 } 160 return -1; 161 } 162 163 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 164 btstack_linked_list_iterator_t it; 165 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 166 while (btstack_linked_list_iterator_has_next(&it)){ 167 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 168 if (hfp_connection->acl_handle != handle) continue; 169 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 170 return hfp_connection; 171 } 172 return NULL; 173 } 174 175 static int use_in_band_tone(void){ 176 return get_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 177 } 178 179 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 180 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 181 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 182 return hf && ag; 183 } 184 185 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 186 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 187 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_THREE_WAY_CALLING); 188 return hf && ag; 189 } 190 191 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 192 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 193 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_HF_INDICATORS); 194 return hf && ag; 195 } 196 197 /* unsolicited responses */ 198 199 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 200 char buffer[20]; 201 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", 202 HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 203 buffer[sizeof(buffer) - 1] = 0; 204 return send_str_over_rfcomm(cid, buffer); 205 } 206 207 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 208 char buffer[40]; 209 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n\r\nOK\r\n", 210 HFP_SUPPORTED_FEATURES, hfp_ag_supported_features); 211 buffer[sizeof(buffer) - 1] = 0; 212 return send_str_over_rfcomm(cid, buffer); 213 } 214 215 static int hfp_ag_send_ok(uint16_t cid){ 216 char buffer[10]; 217 snprintf(buffer, sizeof(buffer), "\r\nOK\r\n"); 218 buffer[sizeof(buffer) - 1] = 0; 219 return send_str_over_rfcomm(cid, buffer); 220 } 221 222 static int hfp_ag_send_ring(uint16_t cid){ 223 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 224 } 225 226 static int hfp_ag_send_no_carrier(uint16_t cid){ 227 char buffer[15]; 228 snprintf(buffer, sizeof(buffer), "\r\nNO CARRIER\r\n"); 229 buffer[sizeof(buffer) - 1] = 0; 230 return send_str_over_rfcomm(cid, buffer); 231 } 232 233 static int hfp_ag_send_clip(uint16_t cid){ 234 char buffer[50]; 235 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, 236 hfp_gsm_clip_number(), hfp_gsm_clip_type()); 237 buffer[sizeof(buffer) - 1] = 0; 238 return send_str_over_rfcomm(cid, buffer); 239 } 240 241 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 242 char buffer[50]; 243 snprintf(buffer, sizeof(buffer), "\r\n%s: ,\"%s\",%u, , \r\n", 244 HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 245 buffer[sizeof(buffer) - 1] = 0; 246 return send_str_over_rfcomm(cid, buffer); 247 } 248 249 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 250 char buffer[50]; 251 snprintf(buffer, sizeof(buffer), "\r\n%s: %s\r\n", 252 HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 253 buffer[sizeof(buffer) - 1] = 0; 254 return send_str_over_rfcomm(cid, buffer); 255 } 256 257 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 258 char buffer[50]; 259 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", 260 HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), 261 hfp_gsm_clip_type()); 262 buffer[sizeof(buffer) - 1] = 0; 263 return send_str_over_rfcomm(cid, buffer); 264 } 265 266 static int hfp_ag_send_error(uint16_t cid){ 267 char buffer[10]; 268 snprintf(buffer, sizeof(buffer), "\r\nERROR\r\n"); 269 buffer[sizeof(buffer) - 1] = 0; 270 return send_str_over_rfcomm(cid, buffer); 271 } 272 273 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 274 char buffer[20]; 275 snprintf(buffer, sizeof(buffer), "\r\n%s=%d\r\n", 276 HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 277 buffer[sizeof(buffer) - 1] = 0; 278 return send_str_over_rfcomm(cid, buffer); 279 } 280 281 // get size for indicator string 282 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 283 // template: ("$NAME",($MIN,$MAX)) 284 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 285 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 286 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 287 } 288 289 // store indicator 290 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer, uint16_t buffer_size){ 291 snprintf((char *)buffer, buffer_size, "(\"%s\",(%d,%d)),", 292 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 293 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 294 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 295 ((char *)buffer)[buffer_size - 1] = 0; 296 } 297 298 // structure: header [indicator [comma indicator]] footer 299 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 300 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 301 if (!num_indicators) return 2; 302 return 3 + ((num_indicators-1) * 2); 303 } 304 305 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 306 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 307 if (index == 0) { 308 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 309 } 310 index--; 311 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 312 int indicator_index = index >> 1; 313 if ((index & 1) == 0){ 314 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 315 } 316 if (indicator_index == (num_indicators - 1)){ 317 return 8; // "\r\n\r\nOK\r\n" 318 } 319 return 1; // comma 320 } 321 322 static void hfp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer, uint16_t buffer_size){ 323 if (index == 0){ 324 *buffer++ = '\r'; 325 *buffer++ = '\n'; 326 int len = strlen(HFP_INDICATOR); 327 (void)memcpy(buffer, HFP_INDICATOR, len); 328 buffer += len; 329 *buffer++ = ':'; 330 return; 331 } 332 index--; 333 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 334 int indicator_index = index >> 1; 335 if ((index & 1) == 0){ 336 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer, buffer_size); 337 return; 338 } 339 if (indicator_index == (num_indicators-1)){ 340 (void)memcpy(buffer, "\r\n\r\nOK\r\n", 8); 341 return; 342 } 343 *buffer = ','; 344 } 345 346 static int hfp_ag_generic_indicators_join(char * buffer, int buffer_size){ 347 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 348 int i; 349 int offset = 0; 350 for (i = 0; i < (hfp_ag_generic_status_indicators_nr - 1); i++) { 351 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_generic_status_indicators[i].uuid); 352 } 353 if (i < hfp_ag_generic_status_indicators_nr){ 354 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_generic_status_indicators[i].uuid); 355 } 356 return offset; 357 } 358 359 static int hfp_ag_generic_indicators_initial_status_join(char * buffer, int buffer_size){ 360 if (buffer_size < (hfp_ag_generic_status_indicators_nr * 3)) return 0; 361 int i; 362 int offset = 0; 363 for (i = 0; i < hfp_ag_generic_status_indicators_nr; i++) { 364 offset += snprintf(buffer+offset, buffer_size-offset, "\r\n%s:%d,%d\r\n", HFP_GENERIC_STATUS_INDICATOR, hfp_ag_generic_status_indicators[i].uuid, hfp_ag_generic_status_indicators[i].state); 365 } 366 return offset; 367 } 368 369 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 370 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 371 int i; 372 int offset = 0; 373 for (i = 0; i < (hfp_ag_indicators_nr-1); i++) { 374 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 375 } 376 if (i<hfp_ag_indicators_nr){ 377 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 378 } 379 return offset; 380 } 381 382 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 383 if (buffer_size < (hfp_ag_call_hold_services_nr * 3)) return 0; 384 int i; 385 int offset = snprintf(buffer, buffer_size, "("); 386 for (i = 0; i < (hfp_ag_call_hold_services_nr-1); i++) { 387 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 388 } 389 if (i<hfp_ag_call_hold_services_nr){ 390 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 391 } 392 return offset; 393 } 394 395 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 396 int start_segment, int num_segments, 397 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 398 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer, uint16_t buffer_size)){ 399 400 // assumes: can send now == true 401 // assumes: num segments > 0 402 // assumes: individual segments are smaller than MTU 403 rfcomm_reserve_packet_buffer(); 404 int mtu = rfcomm_get_max_frame_size(cid); 405 uint8_t * data = rfcomm_get_outgoing_buffer(); 406 int offset = 0; 407 int segment = start_segment; 408 while (segment < num_segments){ 409 int segment_len = get_segment_len(hfp_connection, segment); 410 if ((offset + segment_len + 1) > mtu) break; 411 // append segment. As it appends a '\0', we provide a buffer one byte larger 412 store_segment(hfp_connection, segment, data+offset, segment_len + 1); 413 offset += segment_len; 414 segment++; 415 } 416 rfcomm_send_prepared(cid, offset); 417 #ifdef ENABLE_HFP_AT_MESSAGES 418 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_SENT, (char *) data); 419 #endif 420 return segment; 421 } 422 423 // returns next segment to store 424 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 425 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 426 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 427 hfp_ag_indicators_cmd_generator_get_segment_len, 428 hfp_ag_indicators_cmd_generator_store_segment); 429 } 430 431 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 432 char buffer[40]; 433 const int size = sizeof(buffer); 434 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 435 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 436 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 437 return send_str_over_rfcomm(cid, buffer); 438 } 439 440 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 441 char buffer[40]; 442 const int size = sizeof(buffer); 443 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 444 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 445 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 446 return send_str_over_rfcomm(cid, buffer); 447 } 448 449 450 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 451 return hfp_ag_send_ok(cid); 452 } 453 454 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 455 char buffer[40]; 456 const int size = sizeof(buffer); 457 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 458 offset += hfp_ag_generic_indicators_join(buffer + offset, size - offset - 10); 459 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 460 return send_str_over_rfcomm(cid, buffer); 461 } 462 463 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 464 char buffer[40]; 465 int offset = hfp_ag_generic_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 466 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 467 return send_str_over_rfcomm(cid, buffer); 468 } 469 470 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 471 char buffer[20]; 472 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d\r\n", 473 HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, 474 indicator->status); 475 buffer[sizeof(buffer) - 1] = 0; 476 return send_str_over_rfcomm(cid, buffer); 477 } 478 479 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 480 char buffer[41]; 481 if (strlen(op.name) == 0){ 482 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 483 } else { 484 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 485 offset += snprintf(buffer+offset, 16, "%s", op.name); 486 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 487 } 488 return send_str_over_rfcomm(cid, buffer); 489 } 490 491 static inline int hfp_ag_send_cmd_with_space_and_int(uint16_t cid, const char * cmd, uint8_t value){ 492 char buffer[30]; 493 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", cmd, value); 494 return send_str_over_rfcomm(cid, buffer); 495 } 496 497 498 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 499 char buffer[30]; 500 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 501 return send_str_over_rfcomm(cid, buffer); 502 } 503 504 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 505 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 506 } 507 508 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 509 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 510 } 511 512 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 513 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 514 } 515 516 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 517 return hfp_ag_send_cmd_with_space_and_int(cid, HFP_RESPONSE_AND_HOLD, state); 518 } 519 520 static int hfp_ag_send_enhanced_voice_recognition_state_cmd(hfp_connection_t * hfp_connection){ 521 char buffer[30]; 522 snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, hfp_connection->enhanced_voice_recognition_enabled, hfp_connection->ag_vra_state); 523 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 524 } 525 526 static int hfp_ag_send_voice_recognition_cmd(hfp_connection_t * hfp_connection, uint8_t activate_voice_recognition){ 527 char buffer[30]; 528 if (hfp_connection->enhanced_voice_recognition_enabled){ 529 snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition, hfp_connection->ag_vra_state); 530 } else { 531 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 532 } 533 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 534 } 535 536 static int hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection_t * hfp_connection){ 537 char buffer[100]; 538 snprintf(buffer, sizeof(buffer), "\r\n%s: 1,%d,%X,%d,%d,\"%s\"\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, 539 hfp_connection->ag_vra_state, 540 hfp_connection->ag_msg.text_id, 541 hfp_connection->ag_msg.text_type, 542 hfp_connection->ag_msg.text_operation, 543 hfp_connection->ag_msg.text); 544 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 545 } 546 547 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 548 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 549 550 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_ag_codecs_nr, hfp_ag_codecs)){ 551 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 552 return HFP_CODEC_MSBC; 553 } 554 } 555 return HFP_CODEC_CVSD; 556 } 557 558 /* state machines */ 559 560 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 561 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_ag_supported_features & (1 << HFP_AGSF_ESCO_S4)); 562 } 563 564 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 565 /* events ( == commands): 566 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 567 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 568 hf_trigger_codec_connection_setup == received BCC 569 ag_trigger_codec_connection_setup == received from AG to send BCS 570 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 571 */ 572 switch (hfp_connection->codecs_state){ 573 case HFP_CODECS_EXCHANGED: 574 if (hfp_connection->command == HFP_CMD_AVAILABLE_CODECS){ 575 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 576 return 1; 577 } 578 break; 579 580 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 581 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 582 break; 583 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 584 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 585 break; 586 default: 587 break; 588 } 589 590 switch (hfp_connection->command){ 591 case HFP_CMD_AVAILABLE_CODECS: 592 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 593 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 594 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 595 return 1; 596 } 597 598 switch (hfp_connection->codecs_state){ 599 case HFP_CODECS_AG_SENT_COMMON_CODEC: 600 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 601 break; 602 default: 603 break; 604 } 605 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 606 return 1; 607 608 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 609 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 610 hfp_connection->establish_audio_connection = 1; 611 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 612 return 1; 613 614 case HFP_CMD_AG_SEND_COMMON_CODEC: 615 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 616 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 617 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 618 return 1; 619 620 case HFP_CMD_HF_CONFIRMED_CODEC: 621 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 622 hfp_connection->codecs_state = HFP_CODECS_ERROR; 623 hfp_ag_send_error(hfp_connection->rfcomm_cid); 624 return 1; 625 } 626 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 627 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 628 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 629 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 630 // now, pick link settings 631 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 632 #ifdef ENABLE_CC256X_ASSISTED_HFP 633 hfp_cc256x_prepare_for_sco(hfp_connection); 634 #endif 635 return 1; 636 default: 637 break; 638 } 639 return 0; 640 } 641 642 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 643 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 644 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 645 646 // if active call exist, set per-hfp_connection state active, too (when audio is on) 647 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 648 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 649 } 650 // if AG is ringing, also start ringing on the HF 651 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 652 switch (hfp_gsm_callsetup_status()){ 653 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 654 hfp_ag_hf_start_ringing_incoming(hfp_connection); 655 break; 656 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 657 hfp_ag_hf_start_ringing_outgoing(hfp_connection); 658 break; 659 default: 660 break; 661 } 662 } 663 } 664 665 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 666 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 667 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 668 int sent = 0; 669 switch(hfp_connection->command){ 670 case HFP_CMD_SUPPORTED_FEATURES: 671 switch(hfp_connection->state){ 672 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 673 case HFP_EXCHANGE_SUPPORTED_FEATURES: 674 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_ag_codecs, &hfp_ag_codecs_nr); 675 if (has_codec_negotiation_feature(hfp_connection)){ 676 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 677 } else { 678 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 679 } 680 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 681 return 1; 682 default: 683 break; 684 } 685 break; 686 case HFP_CMD_AVAILABLE_CODECS: 687 sent = codecs_exchange_state_machine(hfp_connection); 688 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 689 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 690 } 691 return sent; 692 693 case HFP_CMD_RETRIEVE_AG_INDICATORS: 694 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 695 // HF requested AG Indicators and we did expect it 696 hfp_connection->send_ag_indicators_segment = 0; 697 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 698 // continue below in state switch 699 } 700 break; 701 702 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 703 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 704 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 705 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 706 return 1; 707 708 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 709 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 710 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 711 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 712 } else if (has_hf_indicators_feature(hfp_connection)){ 713 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 714 } else { 715 hfp_ag_slc_established(hfp_connection); 716 } 717 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 718 return 1; 719 720 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 721 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 722 if (has_hf_indicators_feature(hfp_connection)){ 723 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 724 } 725 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 726 if (!has_hf_indicators_feature(hfp_connection)){ 727 hfp_ag_slc_established(hfp_connection); 728 } 729 return 1; 730 731 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 732 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 733 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 734 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 735 return 1; 736 737 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 738 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 739 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 740 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 741 return 1; 742 743 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 744 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 745 hfp_ag_slc_established(hfp_connection); 746 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 747 return 1; 748 default: 749 break; 750 } 751 752 switch (hfp_connection->state){ 753 case HFP_RETRIEVE_INDICATORS: { 754 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 755 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 756 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 757 if (next_segment < num_segments){ 758 // prepare sending of next segment 759 hfp_connection->send_ag_indicators_segment = next_segment; 760 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 761 } else { 762 // done, go to next state 763 hfp_connection->send_ag_indicators_segment = 0; 764 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 765 } 766 return 1; 767 } 768 default: 769 break; 770 } 771 return 0; 772 } 773 774 static bool hfp_ag_voice_recognition_supported(hfp_connection_t * hfp_connection, bool enhanced){ 775 uint8_t ag_vra_flag = HFP_AGSF_VOICE_RECOGNITION_FUNCTION; 776 uint8_t hf_vra_flag = HFP_HFSF_VOICE_RECOGNITION_FUNCTION; 777 778 if (enhanced){ 779 ag_vra_flag = HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS; 780 hf_vra_flag = HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS; 781 } 782 783 int ag = get_bit(hfp_ag_supported_features, ag_vra_flag); 784 int hf = get_bit(hfp_connection->remote_supported_features, hf_vra_flag); 785 return hf && ag; 786 } 787 788 static bool hfp_ag_voice_recognition_flags_supported(hfp_connection_t * hfp_connection){ 789 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION); 790 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION); 791 return hf && ag; 792 } 793 794 static bool hfp_ag_voice_enhanced_recognition_flags_supported(hfp_connection_t * hfp_connection){ 795 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS); 796 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS); 797 return hf && ag; 798 } 799 800 static uint8_t hfp_ag_can_activate_voice_recognition(hfp_connection_t * hfp_connection, bool enhanced){ 801 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 802 return ERROR_CODE_COMMAND_DISALLOWED; 803 } 804 if (!hfp_ag_voice_recognition_supported(hfp_connection, enhanced)){ 805 return ERROR_CODE_COMMAND_DISALLOWED; 806 } 807 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_OFF){ 808 return ERROR_CODE_COMMAND_DISALLOWED; 809 } 810 return ERROR_CODE_SUCCESS; 811 } 812 813 static uint8_t hfp_ag_voice_recognition_session_active(hfp_connection_t * hfp_connection, bool enhanced){ 814 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 815 return ERROR_CODE_COMMAND_DISALLOWED; 816 } 817 if (!hfp_ag_voice_recognition_supported(hfp_connection, enhanced)){ 818 return ERROR_CODE_COMMAND_DISALLOWED; 819 } 820 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 821 if (hfp_connection->vra_state == HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO){ 822 return ERROR_CODE_SUCCESS; 823 } 824 return ERROR_CODE_COMMAND_DISALLOWED; 825 } 826 return ERROR_CODE_SUCCESS; 827 } 828 829 static bool hfp_ag_can_send_enahnced_voice_recognition_message(hfp_connection_t * hfp_connection, bool enhanced){ 830 if (hfp_ag_voice_recognition_session_active(hfp_connection, enhanced) == ERROR_CODE_SUCCESS){ 831 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_VOICE_RECOGNITION_TEXT); 832 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_TEXT); 833 return hf && ag; 834 } 835 return false; 836 } 837 838 static bool hfp_ag_is_audio_connection_active(hfp_connection_t * hfp_connection){ 839 switch (hfp_connection->state){ 840 case HFP_W2_CONNECT_SCO: 841 case HFP_W4_SCO_CONNECTED: 842 case HFP_AUDIO_CONNECTION_ESTABLISHED: 843 return true; 844 default: 845 return false; 846 } 847 } 848 849 static void hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection_t * hfp_connection, uint8_t status){ 850 hci_con_handle_t acl_handle = (hfp_connection != NULL) ? hfp_connection->acl_handle : HCI_CON_HANDLE_INVALID; 851 852 uint8_t event[6]; 853 event[0] = HCI_EVENT_HFP_META; 854 event[1] = sizeof(event) - 2; 855 event[2] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE_SENT; 856 little_endian_store_16(event, 3, acl_handle); 857 event[5] = status; 858 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 859 } 860 861 862 static void hfp_ag_emit_hf_indicator_value(hfp_connection_t * hfp_connection, uint16_t uuid, uint8_t value){ 863 hci_con_handle_t acl_handle = (hfp_connection != NULL) ? hfp_connection->acl_handle : HCI_CON_HANDLE_INVALID; 864 865 uint8_t event[8]; 866 event[0] = HCI_EVENT_HFP_META; 867 event[1] = sizeof(event) - 2; 868 event[2] = HFP_SUBEVENT_HF_INDICATOR; 869 little_endian_store_16(event, 3, acl_handle); 870 little_endian_store_16(event, 5, uuid); 871 event[7] = value; 872 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 873 } 874 875 static void hfp_ag_emit_general_simple_event(uint8_t event_subtype){ 876 if (!hfp_ag_callback) return; 877 878 uint8_t event[5]; 879 event[0] = HCI_EVENT_HFP_META; 880 event[1] = sizeof(event) - 2; 881 event[2] = event_subtype; 882 little_endian_store_16(event, 3, HCI_CON_HANDLE_INVALID); 883 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 884 } 885 886 static int hfp_ag_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 887 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 888 return 0; 889 } 890 int done = 0; 891 uint8_t status; 892 893 switch (hfp_connection->command){ 894 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 895 switch (hfp_connection->vra_state_requested){ 896 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_MSG: 897 done = hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection); 898 if (done == 0){ 899 hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 900 } else { 901 hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection, ERROR_CODE_SUCCESS); 902 } 903 hfp_connection->vra_state_requested = hfp_connection->vra_state; 904 return done; 905 906 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_STATUS: 907 done = hfp_ag_send_enhanced_voice_recognition_state_cmd(hfp_connection); 908 if (done == 0){ 909 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 910 } else { 911 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 912 } 913 hfp_connection->vra_state_requested = hfp_connection->vra_state; 914 return done; 915 916 default: 917 done = hfp_ag_send_voice_recognition_cmd(hfp_connection, hfp_connection->ag_activate_voice_recognition_value); 918 if (done == 0){ 919 hfp_connection->vra_state_requested = hfp_connection->vra_state; 920 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_COMMAND_DISALLOWED); 921 return 0; 922 } 923 break; 924 } 925 break; 926 927 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 928 // HF initiatied voice recognition, parser extracted activation value 929 switch (hfp_connection->ag_activate_voice_recognition_value){ 930 case 0: 931 if (hfp_ag_voice_recognition_session_active(hfp_connection, hfp_connection->enhanced_voice_recognition_enabled) == ERROR_CODE_SUCCESS){ 932 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 933 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 934 } 935 break; 936 937 case 1: 938 if (hfp_ag_can_activate_voice_recognition(hfp_connection, hfp_connection->enhanced_voice_recognition_enabled) == ERROR_CODE_SUCCESS){ 939 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 940 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 941 } 942 break; 943 944 case 2: 945 if (hfp_ag_voice_recognition_session_active(hfp_connection, hfp_connection->enhanced_voice_recognition_enabled) == ERROR_CODE_SUCCESS){ 946 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 947 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 948 } 949 break; 950 default: 951 break; 952 } 953 if (done == 0){ 954 hfp_connection->vra_state_requested = hfp_connection->vra_state; 955 done = hfp_ag_send_error(hfp_connection->rfcomm_cid); 956 return 1; 957 } 958 break; 959 960 default: 961 return 0; 962 } 963 964 switch (hfp_connection->vra_state_requested){ 965 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 966 if (!hfp_ag_is_audio_connection_active(hfp_connection)){ 967 status = hfp_ag_setup_audio_connection(hfp_connection); 968 if (status != ERROR_CODE_SUCCESS){ 969 hfp_connection->vra_state_requested = hfp_connection->vra_state; 970 hfp_emit_voice_recognition_state_event(hfp_connection, status); 971 return 0; 972 } 973 } 974 hfp_connection->enhanced_voice_recognition_enabled = true; 975 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 976 hfp_connection->vra_state_requested = hfp_connection->vra_state; 977 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 978 break; 979 980 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 981 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 982 hfp_connection->vra_state_requested = hfp_connection->vra_state; 983 984 // release audio connection only if it was opened after audio VR activated 985 if (hfp_ag_is_audio_connection_active(hfp_connection) && !hfp_connection->ag_audio_connection_opened_before_vra){ 986 hfp_trigger_release_audio_connection(hfp_connection); 987 } 988 989 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 990 break; 991 992 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 993 // open only if audio connection does not already exist 994 if (!hfp_ag_is_audio_connection_active(hfp_connection)){ 995 status = hfp_ag_setup_audio_connection(hfp_connection); 996 if (status != ERROR_CODE_SUCCESS){ 997 hfp_connection->vra_state_requested = hfp_connection->vra_state; 998 hfp_emit_voice_recognition_state_event(hfp_connection, status); 999 return 0; 1000 } 1001 } 1002 1003 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 1004 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1005 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 1006 break; 1007 1008 default: 1009 break; 1010 } 1011 return done; 1012 } 1013 1014 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 1015 int sent = codecs_exchange_state_machine(hfp_connection); 1016 if (sent) return 1; 1017 1018 switch(hfp_connection->command){ 1019 1020 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1021 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 1022 return 1; 1023 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 1024 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 1025 return 1; 1026 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 1027 if (hfp_connection->network_operator.format != 0){ 1028 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1029 } else { 1030 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1031 } 1032 return 1; 1033 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 1034 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1035 return 1; 1036 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 1037 if (hfp_connection->extended_audio_gateway_error){ 1038 hfp_connection->extended_audio_gateway_error = 0; 1039 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 1040 return 1; 1041 } 1042 break; 1043 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 1044 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1045 return 1; 1046 default: 1047 break; 1048 } 1049 return 0; 1050 } 1051 1052 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 1053 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 1054 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 1055 1056 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1057 1058 if (hfp_connection->release_audio_connection){ 1059 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 1060 hfp_connection->release_audio_connection = 0; 1061 gap_disconnect(hfp_connection->sco_handle); 1062 return 1; 1063 } 1064 1065 // accept incoming audio connection (codec negotiation is not used) 1066 if (hfp_connection->accept_sco){ 1067 // notify about codec selection if not done already 1068 if (hfp_connection->negotiated_codec == 0){ 1069 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 1070 } 1071 // 1072 bool incoming_eSCO = hfp_connection->accept_sco == 2; 1073 hfp_connection->accept_sco = 0; 1074 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1075 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 1076 return 1; 1077 } 1078 1079 // run codecs exchange 1080 int sent = codecs_exchange_state_machine(hfp_connection); 1081 if (sent) return 1; 1082 1083 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 1084 if (hfp_connection->establish_audio_connection){ 1085 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1086 hfp_connection->establish_audio_connection = 0; 1087 hfp_setup_synchronous_connection(hfp_connection); 1088 return 1; 1089 } 1090 return 0; 1091 } 1092 1093 static void hfp_ag_set_callsetup_indicator(void){ 1094 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1095 if (!indicator){ 1096 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1097 return; 1098 }; 1099 indicator->status = hfp_gsm_callsetup_status(); 1100 } 1101 1102 static void hfp_ag_set_callheld_indicator(void){ 1103 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1104 if (!indicator){ 1105 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1106 return; 1107 }; 1108 indicator->status = hfp_gsm_callheld_status(); 1109 } 1110 1111 // 1112 // transition implementations for hfp_ag_call_state_machine 1113 // 1114 1115 static void hfp_ag_hf_start_ringing_incoming(hfp_connection_t * hfp_connection){ 1116 if (use_in_band_tone()){ 1117 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 1118 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1119 } else { 1120 hfp_connection->call_state = HFP_CALL_INCOMING_RINGING; 1121 } 1122 } 1123 1124 static void hfp_ag_hf_start_ringing_outgoing(hfp_connection_t * hfp_connection){ 1125 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1126 } 1127 1128 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 1129 hfp_connection->ag_ring = 0; 1130 hfp_connection->ag_send_clip = 0; 1131 } 1132 1133 1134 static void hfp_ag_trigger_incoming_call_during_active_one(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_ACTIVE) continue; 1141 1142 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 1143 hfp_ag_run_for_context(hfp_connection); 1144 } 1145 } 1146 1147 static void hfp_ag_trigger_ring_and_clip(void) { 1148 btstack_linked_list_iterator_t it; 1149 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1150 while (btstack_linked_list_iterator_has_next(&it)){ 1151 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1152 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1153 switch (hfp_connection->call_state){ 1154 case HFP_CALL_INCOMING_RINGING: 1155 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1156 case HFP_CALL_OUTGOING_RINGING: 1157 // Queue RING on this connection 1158 hfp_connection->ag_ring = 1; 1159 1160 // HFP v1.8, 4.23 Calling Line Identification (CLI) Notification 1161 // "If the calling subscriber number information is available from the network, the AG shall issue the 1162 // +CLIP unsolicited result code just after every RING indication when the HF is alerted in an incoming call." 1163 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1164 1165 // trigger next message 1166 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1167 break; 1168 default: 1169 break; 1170 } 1171 } 1172 } 1173 1174 // trigger RING and CLIP messages on connections that are ringing 1175 static void hfp_ag_ring_timeout_handler(btstack_timer_source_t * timer){ 1176 hfp_ag_trigger_ring_and_clip(); 1177 1178 btstack_run_loop_set_timer(timer, HFP_RING_PERIOD_MS); // 2 seconds timeout 1179 btstack_run_loop_add_timer(timer); 1180 } 1181 1182 static void hfp_ag_ring_timeout_stop(void){ 1183 btstack_run_loop_remove_timer(&hfp_ag_ring_timeout); 1184 } 1185 1186 static void hfp_ag_start_ringing(void){ 1187 // setup ring timer 1188 btstack_run_loop_remove_timer(&hfp_ag_ring_timeout); 1189 btstack_run_loop_set_timer_handler(&hfp_ag_ring_timeout, hfp_ag_ring_timeout_handler); 1190 btstack_run_loop_set_timer(&hfp_ag_ring_timeout, HFP_RING_PERIOD_MS); // 2 seconds timeout 1191 btstack_run_loop_add_timer(&hfp_ag_ring_timeout); 1192 1193 // emit start ringing 1194 hfp_ag_emit_general_simple_event(HFP_SUBEVENT_START_RINGING); 1195 1196 // send initial RING + CLIP 1197 hfp_ag_trigger_ring_and_clip(); 1198 } 1199 1200 static void hfp_ag_stop_ringing(void){ 1201 hfp_ag_ring_timeout_stop(); 1202 hfp_ag_emit_general_simple_event(HFP_SUBEVENT_STOP_RINGING); 1203 1204 btstack_linked_list_iterator_t it; 1205 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1206 while (btstack_linked_list_iterator_has_next(&it)){ 1207 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1208 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1209 if ((hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) && 1210 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1211 hfp_ag_hf_stop_ringing(hfp_connection); 1212 } 1213 } 1214 1215 static void hfp_ag_trigger_incoming_call_idle(void){ 1216 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 1217 if (indicator_index < 0) return; 1218 1219 // update callsetup state in connections 1220 btstack_linked_list_iterator_t it; 1221 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1222 while (btstack_linked_list_iterator_has_next(&it)){ 1223 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1224 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1225 if (hfp_connection->call_state != HFP_CALL_IDLE) continue; 1226 1227 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1228 1229 hfp_ag_hf_start_ringing_incoming(hfp_connection); 1230 1231 hfp_ag_run_for_context(hfp_connection); 1232 } 1233 1234 // start local ringing - started after connection state has been updated 1235 hfp_ag_start_ringing(); 1236 } 1237 1238 static void hfp_ag_trigger_outgoing_call(void){ 1239 btstack_linked_list_iterator_t it; 1240 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1241 while (btstack_linked_list_iterator_has_next(&it)){ 1242 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1243 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1244 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1245 if (hfp_connection->call_state == HFP_CALL_IDLE){ 1246 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1247 } 1248 } 1249 } 1250 1251 static void hfp_ag_handle_outgoing_call_accepted(hfp_connection_t * hfp_connection){ 1252 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1253 1254 // trigger callsetup to be 1255 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1256 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1257 1258 int indicator_index ; 1259 1260 hfp_ag_set_callsetup_indicator(); 1261 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1262 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1263 1264 // put current call on hold if active 1265 if (put_call_on_hold){ 1266 log_info("AG putting current call on hold for new outgoing call"); 1267 hfp_ag_set_callheld_indicator(); 1268 indicator_index = get_ag_indicator_index_for_name("callheld"); 1269 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1270 } 1271 1272 // start audio if needed 1273 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1274 } 1275 1276 static void hfp_ag_transfer_indicator(const char * name){ 1277 int indicator_index = get_ag_indicator_index_for_name(name); 1278 if (indicator_index < 0) return; 1279 1280 btstack_linked_list_iterator_t it; 1281 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1282 while (btstack_linked_list_iterator_has_next(&it)){ 1283 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1284 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1285 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1286 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1287 hfp_ag_run_for_context(hfp_connection); 1288 } 1289 } 1290 1291 static void hfp_ag_transfer_callsetup_state(void){ 1292 hfp_ag_transfer_indicator("callsetup"); 1293 } 1294 1295 static void hfp_ag_transfer_call_state(void){ 1296 hfp_ag_transfer_indicator("call"); 1297 } 1298 1299 static void hfp_ag_transfer_callheld_state(void){ 1300 hfp_ag_transfer_indicator("callheld"); 1301 } 1302 1303 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 1304 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1305 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1306 1307 hfp_ag_stop_ringing(); 1308 1309 btstack_linked_list_iterator_t it; 1310 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1311 while (btstack_linked_list_iterator_has_next(&it)){ 1312 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1313 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1314 if ((hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) && 1315 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1316 1317 if (hfp_connection == source){ 1318 1319 if (use_in_band_tone()){ 1320 hfp_connection->call_state = HFP_CALL_ACTIVE; 1321 } else { 1322 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 1323 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1324 } 1325 1326 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1327 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1328 1329 } else { 1330 hfp_connection->call_state = HFP_CALL_IDLE; 1331 } 1332 hfp_ag_run_for_context(hfp_connection); 1333 } 1334 } 1335 1336 static void hfp_ag_ag_accept_call(void){ 1337 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1338 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1339 1340 hfp_ag_stop_ringing(); 1341 1342 btstack_linked_list_iterator_t it; 1343 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1344 while (btstack_linked_list_iterator_has_next(&it)){ 1345 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1346 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1347 if (hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) continue; 1348 1349 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1350 1351 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1352 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1353 1354 hfp_ag_run_for_context(hfp_connection); 1355 break; // only single 1356 } 1357 } 1358 1359 static void hfp_ag_trigger_reject_call(void){ 1360 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1361 1362 hfp_ag_stop_ringing(); 1363 1364 btstack_linked_list_iterator_t it; 1365 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1366 while (btstack_linked_list_iterator_has_next(&it)){ 1367 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1368 if (connection->local_role != HFP_ROLE_AG) continue; 1369 if ((connection->call_state != HFP_CALL_INCOMING_RINGING) && 1370 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1371 1372 connection->call_state = HFP_CALL_IDLE; 1373 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1374 1375 if (connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1376 connection->release_audio_connection = 1; 1377 } 1378 hfp_emit_simple_event(connection, HFP_SUBEVENT_CALL_TERMINATED); 1379 hfp_ag_run_for_context(connection); 1380 rfcomm_request_can_send_now_event(connection->rfcomm_cid); 1381 } 1382 } 1383 1384 static void hfp_ag_trigger_terminate_call(void){ 1385 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1386 1387 // no ringing during call 1388 1389 btstack_linked_list_iterator_t it; 1390 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1391 while (btstack_linked_list_iterator_has_next(&it)){ 1392 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1393 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1394 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1395 1396 hfp_connection->call_state = HFP_CALL_IDLE; 1397 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1398 1399 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1400 hfp_connection->release_audio_connection = 1; 1401 } 1402 1403 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1404 hfp_ag_run_for_context(hfp_connection); 1405 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1406 } 1407 } 1408 1409 static void hfp_ag_set_call_indicator(void){ 1410 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1411 if (!indicator){ 1412 log_error("hfp_ag_set_call_state: call indicator is missing"); 1413 return; 1414 }; 1415 indicator->status = hfp_gsm_call_status(); 1416 } 1417 1418 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1419 btstack_linked_list_iterator_t it; 1420 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1421 while (btstack_linked_list_iterator_has_next(&it)){ 1422 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1423 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1424 if (hfp_connection->call_state == call_state) return hfp_connection; 1425 } 1426 return NULL; 1427 } 1428 1429 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1430 btstack_linked_list_iterator_t it; 1431 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1432 while (btstack_linked_list_iterator_has_next(&it)){ 1433 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1434 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1435 hfp_connection->send_response_and_hold_status = state + 1; 1436 } 1437 } 1438 1439 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1440 int indicator_index; 1441 switch (hfp_connection->call_state){ 1442 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1443 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1444 1445 // we got event: audio hfp_connection established 1446 hfp_connection->call_state = HFP_CALL_INCOMING_RINGING; 1447 break; 1448 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1449 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1450 // we got event: audio hfp_connection established 1451 hfp_connection->call_state = HFP_CALL_ACTIVE; 1452 break; 1453 case HFP_CALL_W2_SEND_CALL_WAITING: 1454 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1455 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1456 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1457 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1458 break; 1459 default: 1460 break; 1461 } 1462 return 0; 1463 } 1464 1465 // functions extracted from hfp_ag_call_sm below 1466 static void hfp_ag_handle_reject_outgoing_call(void){ 1467 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1468 if (!hfp_connection){ 1469 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1470 return; 1471 } 1472 1473 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1474 hfp_connection->call_state = HFP_CALL_IDLE; 1475 hfp_connection->send_error = 1; 1476 hfp_ag_run_for_context(hfp_connection); 1477 } 1478 1479 // hfp_connection is used to identify originating HF 1480 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1481 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1482 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1483 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1484 1485 switch (event){ 1486 case HFP_AG_INCOMING_CALL: 1487 switch (hfp_gsm_call_status()){ 1488 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1489 switch (hfp_gsm_callsetup_status()){ 1490 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1491 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1492 hfp_ag_set_callsetup_indicator(); 1493 hfp_ag_trigger_incoming_call_idle(); 1494 log_info("AG rings"); 1495 break; 1496 default: 1497 break; 1498 } 1499 break; 1500 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1501 switch (hfp_gsm_callsetup_status()){ 1502 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1503 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1504 hfp_ag_set_callsetup_indicator(); 1505 hfp_ag_trigger_incoming_call_during_active_one(); 1506 log_info("AG call waiting"); 1507 break; 1508 default: 1509 break; 1510 } 1511 break; 1512 default: 1513 break; 1514 } 1515 break; 1516 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1517 switch (hfp_gsm_call_status()){ 1518 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1519 switch (hfp_gsm_callsetup_status()){ 1520 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1521 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1522 hfp_ag_set_call_indicator(); 1523 hfp_ag_set_callsetup_indicator(); 1524 hfp_ag_ag_accept_call(); 1525 log_info("AG answers call, accept call by GSM"); 1526 break; 1527 default: 1528 break; 1529 } 1530 break; 1531 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1532 switch (hfp_gsm_callsetup_status()){ 1533 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1534 log_info("AG: current call is placed on hold, incoming call gets active"); 1535 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1536 hfp_ag_set_callsetup_indicator(); 1537 hfp_ag_set_callheld_indicator(); 1538 hfp_ag_transfer_callsetup_state(); 1539 hfp_ag_transfer_callheld_state(); 1540 break; 1541 default: 1542 break; 1543 } 1544 break; 1545 default: 1546 break; 1547 } 1548 break; 1549 1550 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1551 switch (hfp_gsm_call_status()){ 1552 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1553 switch (hfp_gsm_callheld_status()){ 1554 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1555 log_info("AG: joining held call with active call"); 1556 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1557 hfp_ag_set_callheld_indicator(); 1558 hfp_ag_transfer_callheld_state(); 1559 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1560 break; 1561 default: 1562 break; 1563 } 1564 break; 1565 default: 1566 break; 1567 } 1568 break; 1569 1570 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1571 switch (hfp_gsm_call_status()){ 1572 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1573 switch (hfp_gsm_callsetup_status()){ 1574 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1575 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1576 hfp_ag_set_callsetup_indicator(); 1577 hfp_ag_set_call_indicator(); 1578 hfp_ag_hf_accept_call(hfp_connection); 1579 hfp_connection->ok_pending = 1; 1580 log_info("HF answers call, accept call by GSM"); 1581 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1582 break; 1583 default: 1584 break; 1585 } 1586 break; 1587 default: 1588 break; 1589 } 1590 break; 1591 1592 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1593 switch (hfp_gsm_call_status()){ 1594 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1595 switch (hfp_gsm_callsetup_status()){ 1596 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1597 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1598 hfp_ag_response_and_hold_active = 1; 1599 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1600 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1601 // as with regular call 1602 hfp_ag_set_call_indicator(); 1603 hfp_ag_set_callsetup_indicator(); 1604 hfp_ag_ag_accept_call(); 1605 log_info("AG response and hold - hold by AG"); 1606 break; 1607 default: 1608 break; 1609 } 1610 break; 1611 default: 1612 break; 1613 } 1614 break; 1615 1616 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1617 switch (hfp_gsm_call_status()){ 1618 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1619 switch (hfp_gsm_callsetup_status()){ 1620 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1621 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1622 hfp_ag_response_and_hold_active = 1; 1623 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1624 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1625 // as with regular call 1626 hfp_ag_set_call_indicator(); 1627 hfp_ag_set_callsetup_indicator(); 1628 hfp_ag_hf_accept_call(hfp_connection); 1629 log_info("AG response and hold - hold by HF"); 1630 break; 1631 default: 1632 break; 1633 } 1634 break; 1635 default: 1636 break; 1637 } 1638 break; 1639 1640 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1641 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1642 if (!hfp_ag_response_and_hold_active) break; 1643 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1644 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1645 hfp_ag_response_and_hold_active = 0; 1646 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1647 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1648 log_info("Held Call accepted and active"); 1649 break; 1650 1651 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1652 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1653 if (!hfp_ag_response_and_hold_active) break; 1654 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1655 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1656 hfp_ag_response_and_hold_active = 0; 1657 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1658 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1659 // from terminate by ag 1660 hfp_ag_set_call_indicator(); 1661 hfp_ag_trigger_terminate_call(); 1662 break; 1663 1664 case HFP_AG_TERMINATE_CALL_BY_HF: 1665 switch (hfp_gsm_call_status()){ 1666 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1667 switch (hfp_gsm_callsetup_status()){ 1668 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1669 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1670 hfp_ag_set_callsetup_indicator(); 1671 hfp_ag_transfer_callsetup_state(); 1672 hfp_ag_trigger_reject_call(); 1673 log_info("HF Rejected Incoming call, AG terminate call"); 1674 break; 1675 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1676 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1677 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1678 hfp_ag_set_callsetup_indicator(); 1679 hfp_ag_transfer_callsetup_state(); 1680 log_info("AG terminate outgoing call process"); 1681 break; 1682 default: 1683 break; 1684 } 1685 break; 1686 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1687 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1688 hfp_ag_set_callsetup_indicator(); 1689 hfp_ag_set_call_indicator(); 1690 hfp_ag_trigger_terminate_call(); 1691 log_info("AG terminate call"); 1692 break; 1693 default: 1694 break; 1695 } 1696 break; 1697 1698 case HFP_AG_TERMINATE_CALL_BY_AG: 1699 switch (hfp_gsm_call_status()){ 1700 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1701 switch (hfp_gsm_callsetup_status()){ 1702 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1703 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1704 hfp_ag_set_callsetup_indicator(); 1705 hfp_ag_trigger_reject_call(); 1706 log_info("AG Rejected Incoming call, AG terminate call"); 1707 break; 1708 default: 1709 break; 1710 } 1711 break; 1712 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1713 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1714 hfp_ag_set_callsetup_indicator(); 1715 hfp_ag_set_call_indicator(); 1716 hfp_ag_trigger_terminate_call(); 1717 log_info("AG terminate call"); 1718 break; 1719 default: 1720 break; 1721 } 1722 break; 1723 case HFP_AG_CALL_DROPPED: 1724 switch (hfp_gsm_call_status()){ 1725 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1726 switch (hfp_gsm_callsetup_status()){ 1727 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1728 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1729 hfp_ag_stop_ringing(); 1730 break; 1731 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1732 log_info("Outgoing call interrupted\n"); 1733 break; 1734 default: 1735 break; 1736 } 1737 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1738 hfp_ag_set_callsetup_indicator(); 1739 hfp_ag_transfer_callsetup_state(); 1740 hfp_ag_trigger_terminate_call(); 1741 break; 1742 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1743 if (hfp_ag_response_and_hold_active) { 1744 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1745 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1746 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1747 } 1748 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1749 hfp_ag_set_callsetup_indicator(); 1750 hfp_ag_set_call_indicator(); 1751 hfp_ag_trigger_terminate_call(); 1752 log_info("AG notify call dropped"); 1753 break; 1754 default: 1755 break; 1756 } 1757 break; 1758 1759 case HFP_AG_OUTGOING_CALL_INITIATED_BY_HF: 1760 // directly reject call if number of free slots is exceeded 1761 if (!hfp_gsm_call_possible()){ 1762 hfp_connection->send_error = 1; 1763 hfp_ag_run_for_context(hfp_connection); 1764 break; 1765 } 1766 1767 // note: number not used currently 1768 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1769 1770 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1771 1772 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1773 break; 1774 1775 case HFP_AG_OUTGOING_CALL_INITIATED_BY_AG: 1776 // directly reject call if number of free slots is exceeded 1777 if (!hfp_gsm_call_possible()) { 1778 // TODO: no error for user 1779 break; 1780 } 1781 switch (hfp_gsm_call_status()) { 1782 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1783 switch (hfp_gsm_callsetup_status()) { 1784 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1785 // note: number not used currently 1786 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, 0, 0, "1234567"); 1787 // init call state for all connections 1788 hfp_ag_trigger_outgoing_call(); 1789 // get first one and accept call 1790 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1791 if (hfp_connection) { 1792 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1793 } 1794 break; 1795 default: 1796 // TODO: no error for user 1797 break; 1798 } 1799 break; 1800 default: 1801 // TODO: no error for user 1802 break; 1803 } 1804 break; 1805 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1806 // directly reject call if number of free slots is exceeded 1807 if (!hfp_gsm_call_possible()){ 1808 hfp_connection->send_error = 1; 1809 hfp_ag_run_for_context(hfp_connection); 1810 break; 1811 } 1812 1813 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1814 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1815 1816 log_info("Redial last number"); 1817 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1818 1819 if (strlen(last_dialed_number) > 0){ 1820 log_info("Last number exists: accept call"); 1821 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1822 } else { 1823 log_info("log_infoLast number missing: reject call"); 1824 hfp_ag_handle_reject_outgoing_call(); 1825 } 1826 break; 1827 } 1828 case HFP_AG_OUTGOING_CALL_REJECTED: 1829 hfp_ag_handle_reject_outgoing_call(); 1830 break; 1831 1832 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1833 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1834 if (!hfp_connection){ 1835 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1836 break; 1837 } 1838 1839 hfp_connection->ok_pending = 1; 1840 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1841 break; 1842 } 1843 case HFP_AG_OUTGOING_CALL_RINGING: 1844 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1845 if (!hfp_connection){ 1846 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1847 break; 1848 } 1849 1850 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1851 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1852 hfp_ag_set_callsetup_indicator(); 1853 hfp_ag_transfer_callsetup_state(); 1854 hfp_ag_hf_start_ringing_outgoing(hfp_connection); 1855 break; 1856 1857 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1858 // get outgoing call 1859 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1860 if (!hfp_connection){ 1861 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1862 } 1863 if (!hfp_connection){ 1864 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1865 break; 1866 } 1867 1868 bool callheld_status_call_on_hold_and_no_active_calls = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1869 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1870 hfp_connection->call_state = HFP_CALL_ACTIVE; 1871 hfp_ag_set_callsetup_indicator(); 1872 hfp_ag_set_call_indicator(); 1873 hfp_ag_transfer_call_state(); 1874 hfp_ag_transfer_callsetup_state(); 1875 if (callheld_status_call_on_hold_and_no_active_calls){ 1876 hfp_ag_set_callheld_indicator(); 1877 hfp_ag_transfer_callheld_state(); 1878 } 1879 hfp_ag_hf_stop_ringing(hfp_connection); 1880 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1881 break; 1882 } 1883 1884 case HFP_AG_CALL_HOLD_USER_BUSY: 1885 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1886 hfp_ag_set_callsetup_indicator(); 1887 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1888 hfp_connection->call_state = HFP_CALL_ACTIVE; 1889 log_info("AG: Call Waiting, User Busy"); 1890 break; 1891 1892 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1893 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1894 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1895 1896 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1897 if (call_held || call_setup_in_progress){ 1898 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1899 0, NULL); 1900 1901 } 1902 1903 if (call_setup_in_progress){ 1904 log_info("AG: Call Dropped, Accept new call"); 1905 hfp_ag_set_callsetup_indicator(); 1906 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1907 } else { 1908 log_info("AG: Call Dropped, Resume held call"); 1909 } 1910 if (call_held){ 1911 hfp_ag_set_callheld_indicator(); 1912 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1913 } 1914 1915 hfp_connection->call_state = HFP_CALL_ACTIVE; 1916 break; 1917 } 1918 1919 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1920 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1921 // only update if callsetup changed 1922 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1923 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1924 NULL); 1925 1926 if (call_setup_in_progress){ 1927 log_info("AG: Call on Hold, Accept new call"); 1928 hfp_ag_set_callsetup_indicator(); 1929 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1930 } else { 1931 log_info("AG: Swap calls"); 1932 } 1933 1934 hfp_ag_set_callheld_indicator(); 1935 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1936 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1937 hfp_connection->call_state = HFP_CALL_ACTIVE; 1938 break; 1939 } 1940 1941 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1942 // Adds a held call to the conversation. 1943 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1944 log_info("AG: Join 3-way-call"); 1945 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1946 hfp_ag_set_callheld_indicator(); 1947 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1948 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1949 } 1950 hfp_connection->call_state = HFP_CALL_ACTIVE; 1951 break; 1952 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1953 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1954 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1955 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1956 hfp_ag_set_call_indicator(); 1957 hfp_ag_set_callheld_indicator(); 1958 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1959 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1960 hfp_connection->call_state = HFP_CALL_IDLE; 1961 break; 1962 1963 default: 1964 break; 1965 } 1966 1967 1968 } 1969 1970 1971 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1972 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1973 if (!active_call) return; 1974 1975 int idx = active_call->index; 1976 hfp_enhanced_call_dir_t dir = active_call->direction; 1977 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1978 hfp_enhanced_call_mode_t mode = active_call->mode; 1979 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1980 uint8_t type = active_call->clip_type; 1981 char * number = active_call->clip_number; 1982 1983 char buffer[100]; 1984 // TODO: check length of a buffer, to fit the MTU 1985 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1986 if (number){ 1987 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1988 } 1989 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1990 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, 1991 mode, mpty, type, number); 1992 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1993 } 1994 1995 // sends pending command, returns if command was sent 1996 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1997 if (hfp_connection->send_status_of_current_calls){ 1998 hfp_connection->ok_pending = 0; 1999 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 2000 hfp_connection->next_call_index++; 2001 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 2002 return 1; 2003 } else { 2004 // 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 2005 hfp_connection->next_call_index = 0; 2006 hfp_connection->ok_pending = 1; 2007 hfp_connection->send_status_of_current_calls = 0; 2008 } 2009 } 2010 2011 if (hfp_connection->ag_notify_incoming_call_waiting){ 2012 hfp_connection->ag_notify_incoming_call_waiting = 0; 2013 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 2014 return 1; 2015 } 2016 2017 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 2018 hfp_connection->ok_pending = 0; 2019 hfp_connection->send_error = 0; 2020 hfp_connection->command = HFP_CMD_NONE; 2021 hfp_ag_send_error(hfp_connection->rfcomm_cid); 2022 return 1; 2023 } 2024 2025 if (hfp_connection->send_error){ 2026 hfp_connection->send_error = 0; 2027 hfp_connection->command = HFP_CMD_NONE; 2028 hfp_ag_send_error(hfp_connection->rfcomm_cid); 2029 return 1; 2030 } 2031 2032 // note: before update AG indicators and ok_pending 2033 if (hfp_connection->send_response_and_hold_status){ 2034 int status = hfp_connection->send_response_and_hold_status - 1; 2035 hfp_connection->send_response_and_hold_status = 0; 2036 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 2037 return 1; 2038 } 2039 2040 if (hfp_connection->ok_pending){ 2041 hfp_connection->ok_pending = 0; 2042 hfp_connection->command = HFP_CMD_NONE; 2043 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2044 return 1; 2045 } 2046 2047 // update AG indicators 2048 if (hfp_connection->ag_indicators_status_update_bitmap){ 2049 int i; 2050 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 2051 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 2052 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 2053 if (!hfp_connection->enable_status_update_for_ag_indicators) { 2054 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 2055 break; 2056 } 2057 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 2058 return 1; 2059 } 2060 } 2061 } 2062 2063 if (hfp_connection->ag_send_no_carrier){ 2064 hfp_connection->ag_send_no_carrier = false; 2065 hfp_ag_send_no_carrier(hfp_connection->rfcomm_cid); 2066 return 1; 2067 } 2068 2069 if (hfp_connection->ag_ring){ 2070 hfp_connection->ag_ring = 0; 2071 hfp_connection->command = HFP_CMD_NONE; 2072 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 2073 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 2074 return 1; 2075 } 2076 2077 if (hfp_connection->ag_send_clip){ 2078 hfp_connection->ag_send_clip = 0; 2079 hfp_connection->command = HFP_CMD_NONE; 2080 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 2081 return 1; 2082 } 2083 2084 if (hfp_connection->send_phone_number_for_voice_tag){ 2085 hfp_connection->send_phone_number_for_voice_tag = 0; 2086 hfp_connection->command = HFP_CMD_NONE; 2087 hfp_connection->ok_pending = 1; 2088 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 2089 return 1; 2090 } 2091 2092 if (hfp_connection->send_subscriber_number){ 2093 if (hfp_connection->next_subscriber_number_to_send < hfp_ag_subscriber_numbers_count){ 2094 hfp_phone_number_t phone = hfp_ag_subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 2095 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 2096 } else { 2097 hfp_connection->send_subscriber_number = 0; 2098 hfp_connection->next_subscriber_number_to_send = 0; 2099 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2100 } 2101 hfp_connection->command = HFP_CMD_NONE; 2102 return 1; 2103 } 2104 2105 if (hfp_connection->send_microphone_gain){ 2106 hfp_connection->send_microphone_gain = 0; 2107 hfp_connection->command = HFP_CMD_NONE; 2108 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 2109 return 1; 2110 } 2111 2112 if (hfp_connection->send_speaker_gain){ 2113 hfp_connection->send_speaker_gain = 0; 2114 hfp_connection->command = HFP_CMD_NONE; 2115 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 2116 return 1; 2117 } 2118 2119 if (hfp_connection->send_ag_status_indicators){ 2120 hfp_connection->send_ag_status_indicators = 0; 2121 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 2122 return 1; 2123 } 2124 2125 return 0; 2126 } 2127 2128 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 2129 2130 btstack_assert(hfp_connection != NULL); 2131 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 2132 2133 // during SDP query, RFCOMM CID is not set 2134 if (hfp_connection->rfcomm_cid == 0) return; 2135 2136 // assert command could be sent 2137 if (hci_can_send_command_packet_now() == 0) return; 2138 2139 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 2140 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 2141 hfp_connection->release_audio_connection = 0; 2142 gap_disconnect(hfp_connection->sco_handle); 2143 return; 2144 } 2145 2146 #ifdef ENABLE_CC256X_ASSISTED_HFP 2147 // WBS Disassociate 2148 if (hfp_connection->cc256x_send_wbs_disassociate){ 2149 hfp_connection->cc256x_send_wbs_disassociate = false; 2150 hci_send_cmd(&hci_ti_wbs_disassociate); 2151 return; 2152 } 2153 // Write Codec Config 2154 if (hfp_connection->cc256x_send_write_codec_config){ 2155 hfp_connection->cc256x_send_write_codec_config = false; 2156 hfp_cc256x_write_codec_config(hfp_connection); 2157 return; 2158 } 2159 // WBS Associate 2160 if (hfp_connection->cc256x_send_wbs_associate){ 2161 hfp_connection->cc256x_send_wbs_associate = false; 2162 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 2163 return; 2164 } 2165 #endif 2166 #ifdef ENABLE_BCM_PCM_WBS 2167 // Enable WBS 2168 if (hfp_connection->bcm_send_enable_wbs){ 2169 hfp_connection->bcm_send_enable_wbs = false; 2170 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 2171 return; 2172 } 2173 // Write I2S/PCM params 2174 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 2175 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 2176 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 2177 return; 2178 } 2179 // Disable WBS 2180 if (hfp_connection->bcm_send_disable_wbs){ 2181 hfp_connection->bcm_send_disable_wbs = false; 2182 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 2183 return; 2184 } 2185 #endif 2186 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 2187 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 2188 hfp_finalize_connection_context(hfp_connection); 2189 return; 2190 } 2191 #endif 2192 2193 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 2194 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 2195 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2196 return; 2197 } 2198 2199 int cmd_sent = hfp_ag_send_commands(hfp_connection); 2200 2201 if (!cmd_sent){ 2202 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 2203 } 2204 2205 if (!cmd_sent){ 2206 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 2207 } 2208 2209 if (!cmd_sent){ 2210 cmd_sent = call_setup_state_machine(hfp_connection); 2211 } 2212 2213 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 2214 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 2215 switch (hfp_connection->codecs_state){ 2216 case HFP_CODECS_IDLE: 2217 case HFP_CODECS_RECEIVED_LIST: 2218 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2219 case HFP_CODECS_ERROR: 2220 hfp_connection->trigger_codec_exchange = 0; 2221 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2222 break; 2223 default: 2224 break; 2225 } 2226 } 2227 2228 if (!cmd_sent){ 2229 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 2230 } 2231 2232 if (!cmd_sent){ 2233 cmd_sent = hfp_ag_voice_recognition_state_machine(hfp_connection); 2234 } 2235 2236 // disconnect 2237 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 2238 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 2239 rfcomm_disconnect(hfp_connection->rfcomm_cid); 2240 } 2241 2242 if (cmd_sent){ 2243 hfp_connection->command = HFP_CMD_NONE; 2244 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2245 } 2246 } 2247 2248 static int hfp_parser_is_end_of_line(uint8_t byte){ 2249 return (byte == '\n') || (byte == '\r'); 2250 } 2251 2252 static void hfp_ag_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 2253 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 2254 if (size < 1) return; 2255 uint8_t status = ERROR_CODE_SUCCESS; 2256 2257 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 2258 #ifdef ENABLE_HFP_AT_MESSAGES 2259 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 2260 #endif 2261 2262 // process messages byte-wise 2263 int pos; 2264 for (pos = 0; pos < size ; pos++){ 2265 hfp_parse(hfp_connection, packet[pos], 0); 2266 2267 // parse until end of line 2268 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 2269 2270 hfp_generic_status_indicator_t * indicator; 2271 switch(hfp_connection->command){ 2272 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 2273 // dealt with in hfp_ag_voice_recognition_state_machine 2274 break; 2275 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 2276 if (hfp_ag_response_and_hold_active){ 2277 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 2278 } 2279 hfp_connection->ok_pending = 1; 2280 break; 2281 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 2282 switch(hfp_connection->ag_response_and_hold_action){ 2283 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 2284 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 2285 break; 2286 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 2287 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 2288 break; 2289 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 2290 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 2291 break; 2292 default: 2293 break; 2294 } 2295 hfp_connection->ok_pending = 1; 2296 break; 2297 case HFP_CMD_HF_INDICATOR_STATUS: 2298 hfp_connection->command = HFP_CMD_NONE; 2299 2300 if (hfp_connection->parser_indicator_index < hfp_ag_generic_status_indicators_nr){ 2301 indicator = &hfp_ag_generic_status_indicators[hfp_connection->parser_indicator_index]; 2302 switch (indicator->uuid){ 2303 case HFP_HF_INDICATOR_UUID_ENHANCED_SAFETY: 2304 if (hfp_connection->parser_indicator_value > 1) { 2305 hfp_connection->send_error = 1; 2306 break; 2307 } 2308 hfp_connection->ok_pending = 1; 2309 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2310 break; 2311 case HFP_HF_INDICATOR_UUID_BATTERY_LEVEL: 2312 if (hfp_connection->parser_indicator_value > 100){ 2313 hfp_connection->send_error = 1; 2314 break; 2315 } 2316 hfp_connection->ok_pending = 1; 2317 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2318 break; 2319 default: 2320 hfp_connection->send_error = 1; 2321 break; 2322 } 2323 } else { 2324 hfp_connection->send_error = 1; 2325 } 2326 break; 2327 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 2328 // expected by SLC state machine 2329 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 2330 hfp_connection->send_ag_indicators_segment = 0; 2331 hfp_connection->send_ag_status_indicators = 1; 2332 break; 2333 case HFP_CMD_LIST_CURRENT_CALLS: 2334 hfp_connection->command = HFP_CMD_NONE; 2335 hfp_connection->next_call_index = 0; 2336 hfp_connection->send_status_of_current_calls = 1; 2337 break; 2338 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 2339 if (hfp_ag_subscriber_numbers_count == 0){ 2340 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2341 break; 2342 } 2343 hfp_connection->next_subscriber_number_to_send = 0; 2344 hfp_connection->send_subscriber_number = 1; 2345 break; 2346 case HFP_CMD_TRANSMIT_DTMF_CODES: 2347 { 2348 hfp_connection->command = HFP_CMD_NONE; 2349 char buffer[2]; 2350 buffer[0] = (char) hfp_connection->ag_dtmf_code; 2351 buffer[1] = 0; 2352 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 2353 break; 2354 } 2355 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 2356 hfp_connection->command = HFP_CMD_NONE; 2357 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 2358 break; 2359 case HFP_CMD_TURN_OFF_EC_AND_NR: 2360 hfp_connection->command = HFP_CMD_NONE; 2361 2362 if (get_bit(hfp_ag_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 2363 hfp_connection->ok_pending = 1; 2364 hfp_ag_supported_features = store_bit(hfp_ag_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 2365 status = ERROR_CODE_SUCCESS; 2366 } else { 2367 hfp_connection->send_error = 1; 2368 status = ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2369 } 2370 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 2371 break; 2372 case HFP_CMD_CALL_ANSWERED: 2373 hfp_connection->command = HFP_CMD_NONE; 2374 log_info("HFP: ATA"); 2375 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 2376 break; 2377 case HFP_CMD_HANG_UP_CALL: 2378 hfp_connection->command = HFP_CMD_NONE; 2379 hfp_connection->ok_pending = 1; 2380 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 2381 break; 2382 case HFP_CMD_CALL_HOLD: { 2383 hfp_connection->command = HFP_CMD_NONE; 2384 hfp_connection->ok_pending = 1; 2385 2386 switch (hfp_connection->ag_call_hold_action){ 2387 case 0: 2388 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2389 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2390 break; 2391 case 1: 2392 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2393 // Where both a held and a waiting call exist, the above procedures shall apply to the 2394 // waiting call (i.e., not to the held call) in conflicting situation. 2395 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2396 break; 2397 case 2: 2398 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2399 // Where both a held and a waiting call exist, the above procedures shall apply to the 2400 // waiting call (i.e., not to the held call) in conflicting situation. 2401 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2402 break; 2403 case 3: 2404 // Adds a held call to the conversation. 2405 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2406 break; 2407 case 4: 2408 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2409 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2410 break; 2411 default: 2412 break; 2413 } 2414 hfp_connection->call_index = 0; 2415 break; 2416 } 2417 case HFP_CMD_CALL_PHONE_NUMBER: 2418 hfp_connection->command = HFP_CMD_NONE; 2419 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, hfp_connection); 2420 break; 2421 case HFP_CMD_REDIAL_LAST_NUMBER: 2422 hfp_connection->command = HFP_CMD_NONE; 2423 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2424 break; 2425 case HFP_CMD_ENABLE_CLIP: 2426 hfp_connection->command = HFP_CMD_NONE; 2427 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2428 hfp_connection->ok_pending = 1; 2429 break; 2430 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2431 hfp_connection->command = HFP_CMD_NONE; 2432 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2433 hfp_connection->ok_pending = 1; 2434 break; 2435 case HFP_CMD_SET_SPEAKER_GAIN: 2436 hfp_connection->command = HFP_CMD_NONE; 2437 hfp_connection->ok_pending = 1; 2438 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2439 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2440 break; 2441 case HFP_CMD_SET_MICROPHONE_GAIN: 2442 hfp_connection->command = HFP_CMD_NONE; 2443 hfp_connection->ok_pending = 1; 2444 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2445 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2446 break; 2447 default: 2448 break; 2449 } 2450 } 2451 } 2452 2453 static void hfp_ag_run(void){ 2454 btstack_linked_list_iterator_t it; 2455 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2456 while (btstack_linked_list_iterator_has_next(&it)){ 2457 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2458 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2459 hfp_ag_run_for_context(hfp_connection); 2460 } 2461 } 2462 2463 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2464 hfp_connection_t * hfp_connection = NULL; 2465 switch (packet_type){ 2466 case RFCOMM_DATA_PACKET: 2467 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 2468 btstack_assert(hfp_connection != NULL); 2469 2470 hfp_ag_handle_rfcomm_data(hfp_connection, packet, size); 2471 hfp_ag_run_for_context(hfp_connection); 2472 return; 2473 case HCI_EVENT_PACKET: 2474 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2475 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2476 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid); 2477 btstack_assert(hfp_connection != NULL); 2478 2479 hfp_ag_run_for_context(hfp_connection); 2480 return; 2481 } 2482 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2483 break; 2484 default: 2485 break; 2486 } 2487 2488 hfp_ag_run(); 2489 } 2490 2491 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2492 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2493 hfp_ag_run(); 2494 } 2495 2496 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2497 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2498 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2499 return; 2500 } 2501 int i; 2502 hfp_ag_codecs_nr = codecs_nr; 2503 for (i=0; i < codecs_nr; i++){ 2504 hfp_ag_codecs[i] = codecs[i]; 2505 } 2506 } 2507 2508 void hfp_ag_init_supported_features(uint32_t supported_features){ 2509 hfp_ag_supported_features = supported_features; 2510 } 2511 2512 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2513 hfp_ag_indicators_nr = ag_indicators_nr; 2514 (void)memcpy(hfp_ag_indicators, ag_indicators, 2515 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2516 } 2517 2518 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2519 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2520 hfp_ag_generic_status_indicators_nr = hf_indicators_nr; 2521 (void)memcpy(hfp_ag_generic_status_indicators, hf_indicators, 2522 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2523 } 2524 2525 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2526 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2527 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2528 call_hold_services_nr * sizeof(char *)); 2529 } 2530 2531 2532 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2533 2534 hfp_init(); 2535 hfp_ag_call_hold_services_nr = 0; 2536 hfp_ag_response_and_hold_active = 0; 2537 hfp_ag_indicators_nr = 0; 2538 hfp_ag_codecs_nr = 0; 2539 hfp_ag_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2540 hfp_ag_subscriber_numbers = NULL; 2541 hfp_ag_subscriber_numbers_count = 0; 2542 2543 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2544 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2545 2546 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2547 2548 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2549 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2550 2551 hfp_gsm_init(); 2552 } 2553 2554 void hfp_ag_deinit(void){ 2555 hfp_deinit(); 2556 hfp_gsm_deinit(); 2557 2558 hfp_ag_callback = NULL; 2559 hfp_ag_supported_features = 0; 2560 hfp_ag_codecs_nr = 0; 2561 hfp_ag_indicators_nr = 0; 2562 hfp_ag_call_hold_services_nr = 0; 2563 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2564 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 2565 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2566 hfp_ag_subscriber_numbers = NULL; 2567 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2568 } 2569 2570 uint8_t hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2571 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2572 } 2573 2574 uint8_t hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2575 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2576 if (!hfp_connection){ 2577 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2578 } 2579 2580 hfp_trigger_release_service_level_connection(hfp_connection); 2581 hfp_ag_run_for_context(hfp_connection); 2582 return ERROR_CODE_SUCCESS; 2583 } 2584 2585 uint8_t hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2586 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2587 if (!hfp_connection){ 2588 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2589 } 2590 2591 hfp_connection->extended_audio_gateway_error = 0; 2592 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2593 return ERROR_CODE_COMMAND_DISALLOWED; 2594 } 2595 2596 hfp_connection->extended_audio_gateway_error = error; 2597 hfp_ag_run_for_context(hfp_connection); 2598 return ERROR_CODE_SUCCESS; 2599 } 2600 2601 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2602 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 2603 return ERROR_CODE_COMMAND_DISALLOWED; 2604 } 2605 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 2606 return ERROR_CODE_COMMAND_DISALLOWED; 2607 } 2608 2609 hfp_connection->establish_audio_connection = 1; 2610 if (!has_codec_negotiation_feature(hfp_connection)){ 2611 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2612 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2613 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2614 // now, pick link settings 2615 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2616 #ifdef ENABLE_CC256X_ASSISTED_HFP 2617 hfp_cc256x_prepare_for_sco(hfp_connection); 2618 #endif 2619 return ERROR_CODE_SUCCESS; 2620 } 2621 2622 uint8_t i; 2623 bool codec_was_in_use = false; 2624 bool better_codec_can_be_used = false; 2625 2626 for (i = 0; i<hfp_connection->remote_codecs_nr; i++){ 2627 if (hfp_connection->negotiated_codec == hfp_connection->remote_codecs[i]){ 2628 codec_was_in_use = true; 2629 } else if (hfp_connection->negotiated_codec < hfp_connection->remote_codecs[i]){ 2630 better_codec_can_be_used = true; 2631 } 2632 } 2633 2634 if (!codec_was_in_use || better_codec_can_be_used){ 2635 hfp_connection->trigger_codec_exchange = 1; 2636 hfp_connection->codecs_state = HFP_CODECS_IDLE; 2637 } 2638 return ERROR_CODE_SUCCESS; 2639 } 2640 2641 uint8_t hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2642 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2643 if (!hfp_connection){ 2644 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2645 } 2646 uint8_t status = hfp_ag_setup_audio_connection(hfp_connection); 2647 if (status != ERROR_CODE_SUCCESS){ 2648 return status; 2649 } 2650 hfp_ag_run_for_context(hfp_connection); 2651 return ERROR_CODE_SUCCESS; 2652 } 2653 2654 uint8_t hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2655 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2656 if (!hfp_connection){ 2657 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2658 } 2659 2660 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 2661 return ERROR_CODE_COMMAND_DISALLOWED; 2662 } 2663 2664 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 2665 if (status == ERROR_CODE_SUCCESS){ 2666 hfp_ag_run_for_context(hfp_connection); 2667 } 2668 return status; 2669 } 2670 2671 /** 2672 * @brief Enable in-band ring tone 2673 */ 2674 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2675 if (get_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2676 return; 2677 } 2678 2679 hfp_ag_supported_features = store_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2680 2681 btstack_linked_list_iterator_t it; 2682 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2683 while (btstack_linked_list_iterator_has_next(&it)){ 2684 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2685 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2686 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2687 hfp_ag_run_for_context(hfp_connection); 2688 } 2689 } 2690 2691 /** 2692 * @brief Called from GSM 2693 */ 2694 void hfp_ag_incoming_call(void){ 2695 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2696 } 2697 2698 void hfp_ag_outgoing_call_initiated(const char * number) { 2699 UNUSED(number); 2700 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, NULL); 2701 } 2702 2703 /** 2704 * @brief number is stored. 2705 */ 2706 void hfp_ag_set_clip(uint8_t type, const char * number){ 2707 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2708 } 2709 2710 void hfp_ag_call_dropped(void){ 2711 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2712 } 2713 2714 // call from AG UI 2715 void hfp_ag_answer_incoming_call(void){ 2716 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2717 } 2718 2719 void hfp_ag_join_held_call(void){ 2720 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2721 } 2722 2723 void hfp_ag_terminate_call(void){ 2724 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2725 } 2726 2727 void hfp_ag_outgoing_call_ringing(void){ 2728 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2729 } 2730 2731 void hfp_ag_outgoing_call_established(void){ 2732 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2733 } 2734 2735 void hfp_ag_outgoing_call_rejected(void){ 2736 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2737 } 2738 2739 void hfp_ag_outgoing_call_accepted(void){ 2740 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2741 } 2742 2743 void hfp_ag_hold_incoming_call(void){ 2744 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2745 } 2746 2747 void hfp_ag_accept_held_incoming_call(void) { 2748 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2749 } 2750 2751 void hfp_ag_reject_held_incoming_call(void){ 2752 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2753 } 2754 2755 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2756 int indicator_index = get_ag_indicator_index_for_name(name); 2757 if (indicator_index < 0) return; 2758 hfp_ag_indicators[indicator_index].status = value; 2759 2760 btstack_linked_list_iterator_t it; 2761 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2762 while (btstack_linked_list_iterator_has_next(&it)){ 2763 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2764 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2765 if (!hfp_connection->ag_indicators[indicator_index].enabled) { 2766 log_info("Requested AG indicator '%s' update to %u, but it is not enabled", hfp_ag_indicators[indicator_index].name, value); 2767 continue; 2768 } 2769 log_info("AG indicator '%s' changed to %u, request transfer status", hfp_ag_indicators[indicator_index].name, value); 2770 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2771 hfp_ag_run_for_context(hfp_connection); 2772 } 2773 } 2774 2775 uint8_t hfp_ag_set_registration_status(int registration_status){ 2776 if ((registration_status < 0) || (registration_status > 1)){ 2777 return ERROR_CODE_COMMAND_DISALLOWED; 2778 } 2779 2780 if ( (registration_status == 0) && (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 2781 2782 // if network goes away wihle a call is active: 2783 // - the call gets dropped 2784 // - we send NO CARRIER 2785 // NOTE: the CALL=0 has to be sent before NO CARRIER 2786 2787 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2788 2789 btstack_linked_list_iterator_t it; 2790 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2791 while (btstack_linked_list_iterator_has_next(&it)){ 2792 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2793 hfp_connection->ag_send_no_carrier = true; 2794 } 2795 } 2796 hfp_ag_set_ag_indicator("service", registration_status); 2797 return ERROR_CODE_SUCCESS; 2798 } 2799 2800 uint8_t hfp_ag_set_signal_strength(int signal_strength){ 2801 if ((signal_strength < 0) || (signal_strength > 5)){ 2802 return ERROR_CODE_COMMAND_DISALLOWED; 2803 } 2804 2805 hfp_ag_set_ag_indicator("signal", signal_strength); 2806 return ERROR_CODE_SUCCESS; 2807 } 2808 2809 uint8_t hfp_ag_set_roaming_status(int roaming_status){ 2810 if ((roaming_status < 0) || (roaming_status > 1)){ 2811 return ERROR_CODE_COMMAND_DISALLOWED; 2812 } 2813 2814 hfp_ag_set_ag_indicator("roam", roaming_status); 2815 return ERROR_CODE_SUCCESS; 2816 } 2817 2818 uint8_t hfp_ag_set_battery_level(int battery_level){ 2819 if ((battery_level < 0) || (battery_level > 5)){ 2820 return ERROR_CODE_COMMAND_DISALLOWED; 2821 } 2822 hfp_ag_set_ag_indicator("battchg", battery_level); 2823 return ERROR_CODE_SUCCESS; 2824 } 2825 2826 static uint8_t activate_voice_recognition(hfp_connection_t * hfp_connection, bool enhanced){ 2827 uint8_t status = hfp_ag_can_activate_voice_recognition(hfp_connection, enhanced); 2828 if (status == ERROR_CODE_SUCCESS){ 2829 hfp_connection->ag_activate_voice_recognition_value = 1; 2830 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 2831 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2832 hfp_connection->enhanced_voice_recognition_enabled = enhanced; 2833 hfp_connection->ag_audio_connection_opened_before_vra = hfp_ag_is_audio_connection_active(hfp_connection); 2834 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2835 hfp_ag_run_for_context(hfp_connection); 2836 } 2837 return status; 2838 } 2839 2840 static uint8_t deactivate_voice_recognition(hfp_connection_t * hfp_connection, bool enhanced){ 2841 uint8_t status = hfp_ag_voice_recognition_session_active(hfp_connection, enhanced); 2842 if (status == ERROR_CODE_SUCCESS){ 2843 hfp_connection->ag_activate_voice_recognition_value = 0; 2844 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2845 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2846 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2847 hfp_ag_run_for_context(hfp_connection); 2848 } 2849 return status; 2850 } 2851 2852 uint8_t hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle){ 2853 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2854 if (!hfp_connection){ 2855 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2856 } 2857 if (hfp_ag_voice_enhanced_recognition_flags_supported(hfp_connection)){ 2858 return activate_voice_recognition(hfp_connection, true); 2859 } 2860 if (hfp_ag_voice_recognition_flags_supported(hfp_connection)){ 2861 return activate_voice_recognition(hfp_connection, false); 2862 } 2863 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2864 } 2865 2866 uint8_t hfp_ag_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2867 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2868 if (!hfp_connection){ 2869 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2870 } 2871 if (hfp_ag_voice_enhanced_recognition_flags_supported(hfp_connection)){ 2872 return deactivate_voice_recognition(hfp_connection, true); 2873 } 2874 if (hfp_ag_voice_recognition_flags_supported(hfp_connection)){ 2875 return deactivate_voice_recognition(hfp_connection, false); 2876 } 2877 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2878 } 2879 2880 static uint8_t hfp_ag_enhanced_voice_recognition_send_state(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state){ 2881 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2882 if (!hfp_connection){ 2883 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2884 } 2885 2886 uint8_t status = hfp_ag_voice_recognition_session_active(hfp_connection, true); 2887 if (status == ERROR_CODE_SUCCESS){ 2888 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2889 hfp_connection->ag_vra_state = state; 2890 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_STATUS; 2891 hfp_ag_run_for_context(hfp_connection); 2892 } 2893 return status; 2894 } 2895 2896 uint8_t hfp_ag_enhanced_voice_recognition_report_sending_audio(hci_con_handle_t acl_handle){ 2897 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_STARTING_SOUND); 2898 } 2899 uint8_t hfp_ag_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 2900 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_READY_TO_ACCEPT_AUDIO_INPUT); 2901 } 2902 uint8_t hfp_ag_enhanced_voice_recognition_report_processing_input(hci_con_handle_t acl_handle){ 2903 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_PROCESSING_AUDIO_INPUT); 2904 } 2905 2906 2907 uint8_t hfp_ag_enhanced_voice_recognition_send_message(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state, hfp_voice_recognition_message_t msg){ 2908 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2909 if (!hfp_connection){ 2910 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2911 } 2912 2913 uint8_t status = hfp_ag_can_send_enahnced_voice_recognition_message(hfp_connection, true); 2914 if (status == ERROR_CODE_SUCCESS){ 2915 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2916 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_MSG; 2917 hfp_connection->ag_msg = msg; 2918 hfp_connection->ag_vra_state = state; 2919 hfp_ag_run_for_context(hfp_connection); 2920 } 2921 return status; 2922 } 2923 2924 2925 uint8_t hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2926 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2927 if (!hfp_connection){ 2928 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2929 } 2930 2931 if ((gain < 0) || (gain > 15)){ 2932 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2933 return ERROR_CODE_COMMAND_DISALLOWED; 2934 } 2935 2936 if (hfp_connection->microphone_gain != gain){ 2937 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2938 hfp_connection->microphone_gain = gain; 2939 hfp_connection->send_microphone_gain = 1; 2940 } 2941 hfp_ag_run_for_context(hfp_connection); 2942 return ERROR_CODE_SUCCESS; 2943 } 2944 2945 uint8_t hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2946 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2947 if (!hfp_connection){ 2948 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2949 } 2950 2951 if ((gain < 0) || (gain > 15)){ 2952 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2953 return ERROR_CODE_COMMAND_DISALLOWED; 2954 } 2955 2956 if (hfp_connection->speaker_gain != gain){ 2957 hfp_connection->speaker_gain = gain; 2958 hfp_connection->send_speaker_gain = 1; 2959 } 2960 hfp_ag_run_for_context(hfp_connection); 2961 return ERROR_CODE_SUCCESS; 2962 } 2963 2964 uint8_t hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2965 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2966 if (!hfp_connection){ 2967 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2968 } 2969 2970 hfp_ag_set_clip(0, number); 2971 hfp_connection->send_phone_number_for_voice_tag = 1; 2972 return ERROR_CODE_SUCCESS; 2973 } 2974 2975 uint8_t hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2976 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2977 if (!hfp_connection){ 2978 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2979 } 2980 2981 hfp_connection->send_error = 1; 2982 return ERROR_CODE_SUCCESS; 2983 } 2984 2985 uint8_t hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2986 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2987 if (!hfp_connection){ 2988 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2989 } 2990 2991 hfp_connection->ok_pending = 1; 2992 return ERROR_CODE_SUCCESS; 2993 } 2994 2995 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2996 hfp_ag_subscriber_numbers = numbers; 2997 hfp_ag_subscriber_numbers_count = numbers_count; 2998 } 2999 3000 void hfp_ag_clear_last_dialed_number(void){ 3001 hfp_gsm_clear_last_dialed_number(); 3002 } 3003 3004 void hfp_ag_set_last_dialed_number(const char * number){ 3005 hfp_gsm_set_last_dialed_number(number); 3006 } 3007 3008 uint8_t hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 3009 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3010 if (!hfp_connection){ 3011 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3012 } 3013 3014 if (!hfp_connection->call_waiting_notification_enabled){ 3015 return ERROR_CODE_COMMAND_DISALLOWED; 3016 } 3017 3018 hfp_connection->ag_notify_incoming_call_waiting = 1; 3019 hfp_ag_run_for_context(hfp_connection); 3020 return ERROR_CODE_SUCCESS; 3021 } 3022 3023 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){ 3024 if (!name){ 3025 name = hfp_ag_default_service_name; 3026 } 3027 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 3028 3029 /* 3030 * 0x01 – Ability to reject a call 3031 * 0x00 – No ability to reject a call 3032 */ 3033 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 3034 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 3035 3036 // Construct SupportedFeatures for SDP bitmap: 3037 // 3038 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 3039 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 3040 // 3041 // Wide band speech (bit 5) requires Codec negotiation 3042 // 3043 uint16_t sdp_features = supported_features & 0x1f; 3044 if ( (wide_band_speech == 1) && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 3045 sdp_features |= 1 << 5; 3046 } 3047 3048 if (supported_features & (1 << HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 3049 sdp_features |= 1 << 6; 3050 } 3051 3052 if (supported_features & (1 << HFP_AGSF_VOICE_RECOGNITION_TEXT)){ 3053 sdp_features |= 1 << 7; 3054 } 3055 3056 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 3057 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 3058 } 3059 3060 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 3061 btstack_assert(callback != NULL); 3062 3063 hfp_ag_callback = callback; 3064 hfp_set_ag_callback(callback); 3065 } 3066