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[HFP_MAX_VR_TEXT_SIZE + 30]; 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_vra_flag_supported(hfp_connection_t * hfp_connection){ 775 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION); 776 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION); 777 return hf && ag; 778 } 779 780 static bool hfp_ag_enhanced_vra_flag_supported(hfp_connection_t * hfp_connection){ 781 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS); 782 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS); 783 return hf && ag; 784 } 785 786 static bool hfp_ag_can_send_enhanced_vra_message_flag_supported(hfp_connection_t * hfp_connection){ 787 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_VOICE_RECOGNITION_TEXT); 788 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_TEXT); 789 return hf && ag; 790 } 791 792 static bool hfp_ag_can_activate_voice_recognition(hfp_connection_t * hfp_connection){ 793 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 794 return false; 795 } 796 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_OFF){ 797 return false; 798 } 799 return true; 800 } 801 802 static bool hfp_ag_voice_recognition_session_active(hfp_connection_t * hfp_connection){ 803 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 804 return false; 805 } 806 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 807 if (hfp_connection->vra_state == HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO){ 808 return true; 809 } 810 return false; 811 } 812 return true; 813 } 814 815 static bool hfp_ag_is_audio_connection_active(hfp_connection_t * hfp_connection){ 816 switch (hfp_connection->state){ 817 case HFP_W2_CONNECT_SCO: 818 case HFP_W4_SCO_CONNECTED: 819 case HFP_AUDIO_CONNECTION_ESTABLISHED: 820 return true; 821 default: 822 return false; 823 } 824 } 825 826 static void hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection_t * hfp_connection, uint8_t status){ 827 hci_con_handle_t acl_handle = (hfp_connection != NULL) ? hfp_connection->acl_handle : HCI_CON_HANDLE_INVALID; 828 829 uint8_t event[6]; 830 event[0] = HCI_EVENT_HFP_META; 831 event[1] = sizeof(event) - 2; 832 event[2] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE_SENT; 833 little_endian_store_16(event, 3, acl_handle); 834 event[5] = status; 835 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 836 } 837 838 839 static void hfp_ag_emit_hf_indicator_value(hfp_connection_t * hfp_connection, uint16_t uuid, uint8_t value){ 840 hci_con_handle_t acl_handle = (hfp_connection != NULL) ? hfp_connection->acl_handle : HCI_CON_HANDLE_INVALID; 841 842 uint8_t event[8]; 843 event[0] = HCI_EVENT_HFP_META; 844 event[1] = sizeof(event) - 2; 845 event[2] = HFP_SUBEVENT_HF_INDICATOR; 846 little_endian_store_16(event, 3, acl_handle); 847 little_endian_store_16(event, 5, uuid); 848 event[7] = value; 849 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 850 } 851 852 static void hfp_ag_emit_general_simple_event(uint8_t event_subtype){ 853 if (!hfp_ag_callback) return; 854 855 uint8_t event[5]; 856 event[0] = HCI_EVENT_HFP_META; 857 event[1] = sizeof(event) - 2; 858 event[2] = event_subtype; 859 little_endian_store_16(event, 3, HCI_CON_HANDLE_INVALID); 860 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 861 } 862 863 static int hfp_ag_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 864 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 865 return 0; 866 } 867 int done = 0; 868 uint8_t status; 869 870 switch (hfp_connection->command){ 871 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 872 switch (hfp_connection->vra_state_requested){ 873 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_MSG: 874 done = hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection); 875 if (done == 0){ 876 hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 877 } else { 878 hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection, ERROR_CODE_SUCCESS); 879 } 880 hfp_connection->vra_state_requested = hfp_connection->vra_state; 881 return done; 882 883 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_STATUS: 884 done = hfp_ag_send_enhanced_voice_recognition_state_cmd(hfp_connection); 885 if (done == 0){ 886 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 887 } else { 888 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 889 } 890 hfp_connection->vra_state_requested = hfp_connection->vra_state; 891 return done; 892 893 default: 894 done = hfp_ag_send_voice_recognition_cmd(hfp_connection, hfp_connection->ag_activate_voice_recognition_value); 895 if (done == 0){ 896 hfp_connection->vra_state_requested = hfp_connection->vra_state; 897 898 if (hfp_connection->ag_activate_voice_recognition_value == 1){ 899 hfp_emit_voice_recognition_enabled(hfp_connection, done); 900 } else { 901 hfp_emit_voice_recognition_disabled(hfp_connection, done); 902 } 903 return 0; 904 } 905 break; 906 } 907 break; 908 909 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 910 // HF initiatied voice recognition, parser extracted activation value 911 switch (hfp_connection->ag_activate_voice_recognition_value){ 912 case 0: 913 if (hfp_ag_voice_recognition_session_active(hfp_connection)){ 914 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 915 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 916 } 917 break; 918 919 case 1: 920 if (hfp_ag_can_activate_voice_recognition(hfp_connection)){ 921 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 922 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 923 } 924 break; 925 926 case 2: 927 if (hfp_ag_voice_recognition_session_active(hfp_connection)){ 928 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 929 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 930 } 931 break; 932 default: 933 break; 934 } 935 if (done == 0){ 936 hfp_connection->vra_state_requested = hfp_connection->vra_state; 937 done = hfp_ag_send_error(hfp_connection->rfcomm_cid); 938 return 1; 939 } 940 break; 941 942 default: 943 return 0; 944 } 945 946 switch (hfp_connection->vra_state_requested){ 947 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 948 if (!hfp_ag_is_audio_connection_active(hfp_connection)){ 949 status = hfp_ag_setup_audio_connection(hfp_connection); 950 if (status != ERROR_CODE_SUCCESS){ 951 hfp_connection->vra_state_requested = hfp_connection->vra_state; 952 hfp_emit_voice_recognition_enabled(hfp_connection, status); 953 return 0; 954 } 955 } 956 hfp_connection->enhanced_voice_recognition_enabled = true; 957 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 958 hfp_connection->vra_state_requested = hfp_connection->vra_state; 959 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 960 break; 961 962 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 963 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 964 hfp_connection->vra_state_requested = hfp_connection->vra_state; 965 966 // release audio connection only if it was opened after audio VR activated 967 if (hfp_ag_is_audio_connection_active(hfp_connection) && !hfp_connection->ag_audio_connection_opened_before_vra){ 968 hfp_trigger_release_audio_connection(hfp_connection); 969 } 970 971 hfp_emit_voice_recognition_disabled(hfp_connection, ERROR_CODE_SUCCESS); 972 break; 973 974 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 975 // open only if audio connection does not already exist 976 if (!hfp_ag_is_audio_connection_active(hfp_connection)){ 977 status = hfp_ag_setup_audio_connection(hfp_connection); 978 if (status != ERROR_CODE_SUCCESS){ 979 hfp_connection->vra_state_requested = hfp_connection->vra_state; 980 hfp_emit_voice_recognition_enabled(hfp_connection, status); 981 return 0; 982 } 983 } 984 985 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 986 hfp_connection->vra_state_requested = hfp_connection->vra_state; 987 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 988 break; 989 990 default: 991 break; 992 } 993 return done; 994 } 995 996 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 997 int sent = codecs_exchange_state_machine(hfp_connection); 998 if (sent) return 1; 999 1000 switch(hfp_connection->command){ 1001 1002 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1003 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 1004 return 1; 1005 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 1006 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 1007 return 1; 1008 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 1009 if (hfp_connection->network_operator.format != 0){ 1010 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1011 } else { 1012 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1013 } 1014 return 1; 1015 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 1016 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1017 return 1; 1018 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 1019 if (hfp_connection->extended_audio_gateway_error){ 1020 hfp_connection->extended_audio_gateway_error = 0; 1021 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 1022 return 1; 1023 } 1024 break; 1025 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 1026 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1027 return 1; 1028 default: 1029 break; 1030 } 1031 return 0; 1032 } 1033 1034 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 1035 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 1036 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 1037 1038 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1039 1040 if (hfp_connection->release_audio_connection){ 1041 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 1042 hfp_connection->release_audio_connection = 0; 1043 gap_disconnect(hfp_connection->sco_handle); 1044 return 1; 1045 } 1046 1047 // accept incoming audio connection (codec negotiation is not used) 1048 if (hfp_connection->accept_sco){ 1049 // notify about codec selection if not done already 1050 if (hfp_connection->negotiated_codec == 0){ 1051 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 1052 } 1053 // 1054 bool incoming_eSCO = hfp_connection->accept_sco == 2; 1055 hfp_connection->accept_sco = 0; 1056 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1057 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 1058 return 1; 1059 } 1060 1061 // run codecs exchange 1062 int sent = codecs_exchange_state_machine(hfp_connection); 1063 if (sent) return 1; 1064 1065 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 1066 if (hfp_connection->establish_audio_connection){ 1067 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1068 hfp_connection->establish_audio_connection = 0; 1069 hfp_setup_synchronous_connection(hfp_connection); 1070 return 1; 1071 } 1072 return 0; 1073 } 1074 1075 static void hfp_ag_set_callsetup_indicator(void){ 1076 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1077 if (!indicator){ 1078 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1079 return; 1080 }; 1081 indicator->status = hfp_gsm_callsetup_status(); 1082 } 1083 1084 static void hfp_ag_set_callheld_indicator(void){ 1085 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1086 if (!indicator){ 1087 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1088 return; 1089 }; 1090 indicator->status = hfp_gsm_callheld_status(); 1091 } 1092 1093 // 1094 // transition implementations for hfp_ag_call_state_machine 1095 // 1096 1097 static void hfp_ag_hf_start_ringing_incoming(hfp_connection_t * hfp_connection){ 1098 if (use_in_band_tone()){ 1099 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 1100 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1101 } else { 1102 hfp_connection->call_state = HFP_CALL_INCOMING_RINGING; 1103 } 1104 } 1105 1106 static void hfp_ag_hf_start_ringing_outgoing(hfp_connection_t * hfp_connection){ 1107 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1108 } 1109 1110 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 1111 hfp_connection->ag_ring = 0; 1112 hfp_connection->ag_send_clip = 0; 1113 } 1114 1115 1116 static void hfp_ag_trigger_incoming_call_during_active_one(void){ 1117 btstack_linked_list_iterator_t it; 1118 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1119 while (btstack_linked_list_iterator_has_next(&it)){ 1120 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1121 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1122 if (hfp_connection->call_state != HFP_CALL_ACTIVE) continue; 1123 1124 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 1125 hfp_ag_run_for_context(hfp_connection); 1126 } 1127 } 1128 1129 static void hfp_ag_trigger_ring_and_clip(void) { 1130 btstack_linked_list_iterator_t it; 1131 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1132 while (btstack_linked_list_iterator_has_next(&it)){ 1133 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1134 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1135 switch (hfp_connection->call_state){ 1136 case HFP_CALL_INCOMING_RINGING: 1137 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1138 case HFP_CALL_OUTGOING_RINGING: 1139 // Queue RING on this connection 1140 hfp_connection->ag_ring = 1; 1141 1142 // HFP v1.8, 4.23 Calling Line Identification (CLI) Notification 1143 // "If the calling subscriber number information is available from the network, the AG shall issue the 1144 // +CLIP unsolicited result code just after every RING indication when the HF is alerted in an incoming call." 1145 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1146 1147 // trigger next message 1148 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1149 break; 1150 default: 1151 break; 1152 } 1153 } 1154 } 1155 1156 // trigger RING and CLIP messages on connections that are ringing 1157 static void hfp_ag_ring_timeout_handler(btstack_timer_source_t * timer){ 1158 hfp_ag_trigger_ring_and_clip(); 1159 1160 btstack_run_loop_set_timer(timer, HFP_RING_PERIOD_MS); // 2 seconds timeout 1161 btstack_run_loop_add_timer(timer); 1162 } 1163 1164 static void hfp_ag_ring_timeout_stop(void){ 1165 btstack_run_loop_remove_timer(&hfp_ag_ring_timeout); 1166 } 1167 1168 static void hfp_ag_start_ringing(void){ 1169 // setup ring timer 1170 btstack_run_loop_remove_timer(&hfp_ag_ring_timeout); 1171 btstack_run_loop_set_timer_handler(&hfp_ag_ring_timeout, hfp_ag_ring_timeout_handler); 1172 btstack_run_loop_set_timer(&hfp_ag_ring_timeout, HFP_RING_PERIOD_MS); // 2 seconds timeout 1173 btstack_run_loop_add_timer(&hfp_ag_ring_timeout); 1174 1175 // emit start ringing 1176 hfp_ag_emit_general_simple_event(HFP_SUBEVENT_START_RINGING); 1177 1178 // send initial RING + CLIP 1179 hfp_ag_trigger_ring_and_clip(); 1180 } 1181 1182 static void hfp_ag_stop_ringing(void){ 1183 hfp_ag_ring_timeout_stop(); 1184 hfp_ag_emit_general_simple_event(HFP_SUBEVENT_STOP_RINGING); 1185 1186 btstack_linked_list_iterator_t it; 1187 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1188 while (btstack_linked_list_iterator_has_next(&it)){ 1189 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1190 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1191 if ((hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) && 1192 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1193 hfp_ag_hf_stop_ringing(hfp_connection); 1194 } 1195 } 1196 1197 static void hfp_ag_trigger_incoming_call_idle(void){ 1198 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 1199 if (indicator_index < 0) return; 1200 1201 // update callsetup state in connections 1202 btstack_linked_list_iterator_t it; 1203 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1204 while (btstack_linked_list_iterator_has_next(&it)){ 1205 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1206 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1207 if (hfp_connection->call_state != HFP_CALL_IDLE) continue; 1208 1209 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1210 1211 hfp_ag_hf_start_ringing_incoming(hfp_connection); 1212 1213 hfp_ag_run_for_context(hfp_connection); 1214 } 1215 1216 // start local ringing - started after connection state has been updated 1217 hfp_ag_start_ringing(); 1218 } 1219 1220 static void hfp_ag_trigger_outgoing_call(void){ 1221 btstack_linked_list_iterator_t it; 1222 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1223 while (btstack_linked_list_iterator_has_next(&it)){ 1224 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1225 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1226 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1227 if (hfp_connection->call_state == HFP_CALL_IDLE){ 1228 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1229 } 1230 } 1231 } 1232 1233 static void hfp_ag_handle_outgoing_call_accepted(hfp_connection_t * hfp_connection){ 1234 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1235 1236 // trigger callsetup to be 1237 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1238 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1239 1240 int indicator_index ; 1241 1242 hfp_ag_set_callsetup_indicator(); 1243 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1244 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1245 1246 // put current call on hold if active 1247 if (put_call_on_hold){ 1248 log_info("AG putting current call on hold for new outgoing call"); 1249 hfp_ag_set_callheld_indicator(); 1250 indicator_index = get_ag_indicator_index_for_name("callheld"); 1251 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1252 } 1253 1254 // start audio if needed 1255 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1256 } 1257 1258 static void hfp_ag_transfer_indicator(const char * name){ 1259 int indicator_index = get_ag_indicator_index_for_name(name); 1260 if (indicator_index < 0) return; 1261 1262 btstack_linked_list_iterator_t it; 1263 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1264 while (btstack_linked_list_iterator_has_next(&it)){ 1265 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1266 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1267 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1268 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1269 hfp_ag_run_for_context(hfp_connection); 1270 } 1271 } 1272 1273 static void hfp_ag_transfer_callsetup_state(void){ 1274 hfp_ag_transfer_indicator("callsetup"); 1275 } 1276 1277 static void hfp_ag_transfer_call_state(void){ 1278 hfp_ag_transfer_indicator("call"); 1279 } 1280 1281 static void hfp_ag_transfer_callheld_state(void){ 1282 hfp_ag_transfer_indicator("callheld"); 1283 } 1284 1285 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 1286 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1287 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1288 1289 hfp_ag_stop_ringing(); 1290 1291 btstack_linked_list_iterator_t it; 1292 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1293 while (btstack_linked_list_iterator_has_next(&it)){ 1294 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1295 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1296 if ((hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) && 1297 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1298 1299 if (hfp_connection == source){ 1300 1301 if (use_in_band_tone()){ 1302 hfp_connection->call_state = HFP_CALL_ACTIVE; 1303 } else { 1304 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 1305 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1306 } 1307 1308 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1309 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1310 1311 } else { 1312 hfp_connection->call_state = HFP_CALL_IDLE; 1313 } 1314 hfp_ag_run_for_context(hfp_connection); 1315 } 1316 } 1317 1318 static void hfp_ag_ag_accept_call(void){ 1319 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1320 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1321 1322 hfp_ag_stop_ringing(); 1323 1324 btstack_linked_list_iterator_t it; 1325 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1326 while (btstack_linked_list_iterator_has_next(&it)){ 1327 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1328 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1329 if (hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) continue; 1330 1331 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1332 1333 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1334 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1335 1336 hfp_ag_run_for_context(hfp_connection); 1337 break; // only single 1338 } 1339 } 1340 1341 static void hfp_ag_trigger_reject_call(void){ 1342 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1343 1344 hfp_ag_stop_ringing(); 1345 1346 btstack_linked_list_iterator_t it; 1347 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1348 while (btstack_linked_list_iterator_has_next(&it)){ 1349 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1350 if (connection->local_role != HFP_ROLE_AG) continue; 1351 if ((connection->call_state != HFP_CALL_INCOMING_RINGING) && 1352 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1353 1354 connection->call_state = HFP_CALL_IDLE; 1355 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1356 1357 if (connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1358 connection->release_audio_connection = 1; 1359 } 1360 hfp_emit_simple_event(connection, HFP_SUBEVENT_CALL_TERMINATED); 1361 hfp_ag_run_for_context(connection); 1362 rfcomm_request_can_send_now_event(connection->rfcomm_cid); 1363 } 1364 } 1365 1366 static void hfp_ag_trigger_terminate_call(void){ 1367 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1368 1369 // no ringing during call 1370 1371 btstack_linked_list_iterator_t it; 1372 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1373 while (btstack_linked_list_iterator_has_next(&it)){ 1374 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1375 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1376 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1377 1378 hfp_connection->call_state = HFP_CALL_IDLE; 1379 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1380 1381 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1382 hfp_connection->release_audio_connection = 1; 1383 } 1384 1385 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1386 hfp_ag_run_for_context(hfp_connection); 1387 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1388 } 1389 } 1390 1391 static void hfp_ag_set_call_indicator(void){ 1392 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1393 if (!indicator){ 1394 log_error("hfp_ag_set_call_state: call indicator is missing"); 1395 return; 1396 }; 1397 indicator->status = hfp_gsm_call_status(); 1398 } 1399 1400 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1401 btstack_linked_list_iterator_t it; 1402 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1403 while (btstack_linked_list_iterator_has_next(&it)){ 1404 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1405 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1406 if (hfp_connection->call_state == call_state) return hfp_connection; 1407 } 1408 return NULL; 1409 } 1410 1411 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1412 btstack_linked_list_iterator_t it; 1413 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1414 while (btstack_linked_list_iterator_has_next(&it)){ 1415 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1416 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1417 hfp_connection->send_response_and_hold_status = state + 1; 1418 } 1419 } 1420 1421 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1422 int indicator_index; 1423 switch (hfp_connection->call_state){ 1424 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1425 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1426 1427 // we got event: audio hfp_connection established 1428 hfp_connection->call_state = HFP_CALL_INCOMING_RINGING; 1429 break; 1430 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1431 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1432 // we got event: audio hfp_connection established 1433 hfp_connection->call_state = HFP_CALL_ACTIVE; 1434 break; 1435 case HFP_CALL_W2_SEND_CALL_WAITING: 1436 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1437 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1438 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1439 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1440 break; 1441 default: 1442 break; 1443 } 1444 return 0; 1445 } 1446 1447 // functions extracted from hfp_ag_call_sm below 1448 static void hfp_ag_handle_reject_outgoing_call(void){ 1449 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1450 if (!hfp_connection){ 1451 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1452 return; 1453 } 1454 1455 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1456 hfp_connection->call_state = HFP_CALL_IDLE; 1457 hfp_connection->send_error = 1; 1458 hfp_ag_run_for_context(hfp_connection); 1459 } 1460 1461 // hfp_connection is used to identify originating HF 1462 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1463 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1464 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1465 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1466 1467 switch (event){ 1468 case HFP_AG_INCOMING_CALL: 1469 switch (hfp_gsm_call_status()){ 1470 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1471 switch (hfp_gsm_callsetup_status()){ 1472 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1473 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1474 hfp_ag_set_callsetup_indicator(); 1475 hfp_ag_trigger_incoming_call_idle(); 1476 log_info("AG rings"); 1477 break; 1478 default: 1479 break; 1480 } 1481 break; 1482 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1483 switch (hfp_gsm_callsetup_status()){ 1484 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1485 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1486 hfp_ag_set_callsetup_indicator(); 1487 hfp_ag_trigger_incoming_call_during_active_one(); 1488 log_info("AG call waiting"); 1489 break; 1490 default: 1491 break; 1492 } 1493 break; 1494 default: 1495 break; 1496 } 1497 break; 1498 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1499 switch (hfp_gsm_call_status()){ 1500 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1501 switch (hfp_gsm_callsetup_status()){ 1502 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1503 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1504 hfp_ag_set_call_indicator(); 1505 hfp_ag_set_callsetup_indicator(); 1506 hfp_ag_ag_accept_call(); 1507 log_info("AG answers call, accept call by GSM"); 1508 break; 1509 default: 1510 break; 1511 } 1512 break; 1513 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1514 switch (hfp_gsm_callsetup_status()){ 1515 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1516 log_info("AG: current call is placed on hold, incoming call gets active"); 1517 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1518 hfp_ag_set_callsetup_indicator(); 1519 hfp_ag_set_callheld_indicator(); 1520 hfp_ag_transfer_callsetup_state(); 1521 hfp_ag_transfer_callheld_state(); 1522 break; 1523 default: 1524 break; 1525 } 1526 break; 1527 default: 1528 break; 1529 } 1530 break; 1531 1532 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1533 switch (hfp_gsm_call_status()){ 1534 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1535 switch (hfp_gsm_callheld_status()){ 1536 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1537 log_info("AG: joining held call with active call"); 1538 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1539 hfp_ag_set_callheld_indicator(); 1540 hfp_ag_transfer_callheld_state(); 1541 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1542 break; 1543 default: 1544 break; 1545 } 1546 break; 1547 default: 1548 break; 1549 } 1550 break; 1551 1552 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1553 switch (hfp_gsm_call_status()){ 1554 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1555 switch (hfp_gsm_callsetup_status()){ 1556 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1557 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1558 hfp_ag_set_callsetup_indicator(); 1559 hfp_ag_set_call_indicator(); 1560 hfp_ag_hf_accept_call(hfp_connection); 1561 hfp_connection->ok_pending = 1; 1562 log_info("HF answers call, accept call by GSM"); 1563 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1564 break; 1565 default: 1566 break; 1567 } 1568 break; 1569 default: 1570 break; 1571 } 1572 break; 1573 1574 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1575 switch (hfp_gsm_call_status()){ 1576 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1577 switch (hfp_gsm_callsetup_status()){ 1578 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1579 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1580 hfp_ag_response_and_hold_active = 1; 1581 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1582 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1583 // as with regular call 1584 hfp_ag_set_call_indicator(); 1585 hfp_ag_set_callsetup_indicator(); 1586 hfp_ag_ag_accept_call(); 1587 log_info("AG response and hold - hold by AG"); 1588 break; 1589 default: 1590 break; 1591 } 1592 break; 1593 default: 1594 break; 1595 } 1596 break; 1597 1598 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1599 switch (hfp_gsm_call_status()){ 1600 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1601 switch (hfp_gsm_callsetup_status()){ 1602 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1603 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1604 hfp_ag_response_and_hold_active = 1; 1605 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1606 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1607 // as with regular call 1608 hfp_ag_set_call_indicator(); 1609 hfp_ag_set_callsetup_indicator(); 1610 hfp_ag_hf_accept_call(hfp_connection); 1611 log_info("AG response and hold - hold by HF"); 1612 break; 1613 default: 1614 break; 1615 } 1616 break; 1617 default: 1618 break; 1619 } 1620 break; 1621 1622 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1623 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1624 if (!hfp_ag_response_and_hold_active) break; 1625 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1626 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1627 hfp_ag_response_and_hold_active = 0; 1628 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1629 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1630 log_info("Held Call accepted and active"); 1631 break; 1632 1633 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1634 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1635 if (!hfp_ag_response_and_hold_active) break; 1636 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1637 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1638 hfp_ag_response_and_hold_active = 0; 1639 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1640 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1641 // from terminate by ag 1642 hfp_ag_set_call_indicator(); 1643 hfp_ag_trigger_terminate_call(); 1644 break; 1645 1646 case HFP_AG_TERMINATE_CALL_BY_HF: 1647 switch (hfp_gsm_call_status()){ 1648 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1649 switch (hfp_gsm_callsetup_status()){ 1650 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1651 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1652 hfp_ag_set_callsetup_indicator(); 1653 hfp_ag_transfer_callsetup_state(); 1654 hfp_ag_trigger_reject_call(); 1655 log_info("HF Rejected Incoming call, AG terminate call"); 1656 break; 1657 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1658 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1659 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1660 hfp_ag_set_callsetup_indicator(); 1661 hfp_ag_transfer_callsetup_state(); 1662 log_info("AG terminate outgoing call process"); 1663 break; 1664 default: 1665 break; 1666 } 1667 break; 1668 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1669 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1670 hfp_ag_set_callsetup_indicator(); 1671 hfp_ag_set_call_indicator(); 1672 hfp_ag_trigger_terminate_call(); 1673 log_info("AG terminate call"); 1674 break; 1675 default: 1676 break; 1677 } 1678 break; 1679 1680 case HFP_AG_TERMINATE_CALL_BY_AG: 1681 switch (hfp_gsm_call_status()){ 1682 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1683 switch (hfp_gsm_callsetup_status()){ 1684 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1685 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1686 hfp_ag_set_callsetup_indicator(); 1687 hfp_ag_trigger_reject_call(); 1688 log_info("AG Rejected Incoming call, AG terminate call"); 1689 break; 1690 default: 1691 break; 1692 } 1693 break; 1694 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1695 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1696 hfp_ag_set_callsetup_indicator(); 1697 hfp_ag_set_call_indicator(); 1698 hfp_ag_trigger_terminate_call(); 1699 log_info("AG terminate call"); 1700 break; 1701 default: 1702 break; 1703 } 1704 break; 1705 case HFP_AG_CALL_DROPPED: 1706 switch (hfp_gsm_call_status()){ 1707 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1708 switch (hfp_gsm_callsetup_status()){ 1709 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1710 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1711 hfp_ag_stop_ringing(); 1712 break; 1713 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1714 log_info("Outgoing call interrupted\n"); 1715 break; 1716 default: 1717 break; 1718 } 1719 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1720 hfp_ag_set_callsetup_indicator(); 1721 hfp_ag_transfer_callsetup_state(); 1722 hfp_ag_trigger_terminate_call(); 1723 break; 1724 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1725 if (hfp_ag_response_and_hold_active) { 1726 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1727 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1728 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1729 } 1730 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1731 hfp_ag_set_callsetup_indicator(); 1732 hfp_ag_set_call_indicator(); 1733 hfp_ag_trigger_terminate_call(); 1734 log_info("AG notify call dropped"); 1735 break; 1736 default: 1737 break; 1738 } 1739 break; 1740 1741 case HFP_AG_OUTGOING_CALL_INITIATED_BY_HF: 1742 // directly reject call if number of free slots is exceeded 1743 if (!hfp_gsm_call_possible()){ 1744 hfp_connection->send_error = 1; 1745 hfp_ag_run_for_context(hfp_connection); 1746 break; 1747 } 1748 1749 // note: number not used currently 1750 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1751 1752 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1753 1754 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1755 break; 1756 1757 case HFP_AG_OUTGOING_CALL_INITIATED_BY_AG: 1758 // directly reject call if number of free slots is exceeded 1759 if (!hfp_gsm_call_possible()) { 1760 // TODO: no error for user 1761 break; 1762 } 1763 switch (hfp_gsm_call_status()) { 1764 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1765 switch (hfp_gsm_callsetup_status()) { 1766 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1767 // note: number not used currently 1768 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, 0, 0, "1234567"); 1769 // init call state for all connections 1770 hfp_ag_trigger_outgoing_call(); 1771 // get first one and accept call 1772 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1773 if (hfp_connection) { 1774 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1775 } 1776 break; 1777 default: 1778 // TODO: no error for user 1779 break; 1780 } 1781 break; 1782 default: 1783 // TODO: no error for user 1784 break; 1785 } 1786 break; 1787 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1788 // directly reject call if number of free slots is exceeded 1789 if (!hfp_gsm_call_possible()){ 1790 hfp_connection->send_error = 1; 1791 hfp_ag_run_for_context(hfp_connection); 1792 break; 1793 } 1794 1795 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1796 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1797 1798 log_info("Redial last number"); 1799 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1800 1801 if (strlen(last_dialed_number) > 0){ 1802 log_info("Last number exists: accept call"); 1803 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1804 } else { 1805 log_info("log_infoLast number missing: reject call"); 1806 hfp_ag_handle_reject_outgoing_call(); 1807 } 1808 break; 1809 } 1810 case HFP_AG_OUTGOING_CALL_REJECTED: 1811 hfp_ag_handle_reject_outgoing_call(); 1812 break; 1813 1814 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1815 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1816 if (!hfp_connection){ 1817 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1818 break; 1819 } 1820 1821 hfp_connection->ok_pending = 1; 1822 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1823 break; 1824 } 1825 case HFP_AG_OUTGOING_CALL_RINGING: 1826 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1827 if (!hfp_connection){ 1828 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1829 break; 1830 } 1831 1832 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1833 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1834 hfp_ag_set_callsetup_indicator(); 1835 hfp_ag_transfer_callsetup_state(); 1836 hfp_ag_hf_start_ringing_outgoing(hfp_connection); 1837 break; 1838 1839 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1840 // get outgoing call 1841 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1842 if (!hfp_connection){ 1843 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1844 } 1845 if (!hfp_connection){ 1846 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1847 break; 1848 } 1849 1850 bool callheld_status_call_on_hold_and_no_active_calls = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1851 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1852 hfp_connection->call_state = HFP_CALL_ACTIVE; 1853 hfp_ag_set_callsetup_indicator(); 1854 hfp_ag_set_call_indicator(); 1855 hfp_ag_transfer_call_state(); 1856 hfp_ag_transfer_callsetup_state(); 1857 if (callheld_status_call_on_hold_and_no_active_calls){ 1858 hfp_ag_set_callheld_indicator(); 1859 hfp_ag_transfer_callheld_state(); 1860 } 1861 hfp_ag_hf_stop_ringing(hfp_connection); 1862 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1863 break; 1864 } 1865 1866 case HFP_AG_CALL_HOLD_USER_BUSY: 1867 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1868 hfp_ag_set_callsetup_indicator(); 1869 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1870 hfp_connection->call_state = HFP_CALL_ACTIVE; 1871 log_info("AG: Call Waiting, User Busy"); 1872 break; 1873 1874 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1875 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1876 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1877 1878 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1879 if (call_held || call_setup_in_progress){ 1880 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1881 0, NULL); 1882 1883 } 1884 1885 if (call_setup_in_progress){ 1886 log_info("AG: Call Dropped, Accept new call"); 1887 hfp_ag_set_callsetup_indicator(); 1888 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1889 } else { 1890 log_info("AG: Call Dropped, Resume held call"); 1891 } 1892 if (call_held){ 1893 hfp_ag_set_callheld_indicator(); 1894 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1895 } 1896 1897 hfp_connection->call_state = HFP_CALL_ACTIVE; 1898 break; 1899 } 1900 1901 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1902 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1903 // only update if callsetup changed 1904 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1905 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1906 NULL); 1907 1908 if (call_setup_in_progress){ 1909 log_info("AG: Call on Hold, Accept new call"); 1910 hfp_ag_set_callsetup_indicator(); 1911 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1912 } else { 1913 log_info("AG: Swap calls"); 1914 } 1915 1916 hfp_ag_set_callheld_indicator(); 1917 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1918 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1919 hfp_connection->call_state = HFP_CALL_ACTIVE; 1920 break; 1921 } 1922 1923 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1924 // Adds a held call to the conversation. 1925 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1926 log_info("AG: Join 3-way-call"); 1927 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1928 hfp_ag_set_callheld_indicator(); 1929 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1930 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1931 } 1932 hfp_connection->call_state = HFP_CALL_ACTIVE; 1933 break; 1934 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1935 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1936 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1937 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1938 hfp_ag_set_call_indicator(); 1939 hfp_ag_set_callheld_indicator(); 1940 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1941 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1942 hfp_connection->call_state = HFP_CALL_IDLE; 1943 break; 1944 1945 default: 1946 break; 1947 } 1948 1949 1950 } 1951 1952 1953 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1954 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1955 if (!active_call) return; 1956 1957 int idx = active_call->index; 1958 hfp_enhanced_call_dir_t dir = active_call->direction; 1959 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1960 hfp_enhanced_call_mode_t mode = active_call->mode; 1961 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1962 uint8_t type = active_call->clip_type; 1963 char * number = active_call->clip_number; 1964 1965 char buffer[100]; 1966 // TODO: check length of a buffer, to fit the MTU 1967 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1968 if (number){ 1969 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1970 } 1971 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1972 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, 1973 mode, mpty, type, number); 1974 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1975 } 1976 1977 // sends pending command, returns if command was sent 1978 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1979 if (hfp_connection->send_status_of_current_calls){ 1980 hfp_connection->ok_pending = 0; 1981 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1982 hfp_connection->next_call_index++; 1983 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1984 return 1; 1985 } else { 1986 // 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 1987 hfp_connection->next_call_index = 0; 1988 hfp_connection->ok_pending = 1; 1989 hfp_connection->send_status_of_current_calls = 0; 1990 } 1991 } 1992 1993 if (hfp_connection->ag_notify_incoming_call_waiting){ 1994 hfp_connection->ag_notify_incoming_call_waiting = 0; 1995 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1996 return 1; 1997 } 1998 1999 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 2000 hfp_connection->ok_pending = 0; 2001 hfp_connection->send_error = 0; 2002 hfp_connection->command = HFP_CMD_NONE; 2003 hfp_ag_send_error(hfp_connection->rfcomm_cid); 2004 return 1; 2005 } 2006 2007 if (hfp_connection->send_error){ 2008 hfp_connection->send_error = 0; 2009 hfp_connection->command = HFP_CMD_NONE; 2010 hfp_ag_send_error(hfp_connection->rfcomm_cid); 2011 return 1; 2012 } 2013 2014 // note: before update AG indicators and ok_pending 2015 if (hfp_connection->send_response_and_hold_status){ 2016 int status = hfp_connection->send_response_and_hold_status - 1; 2017 hfp_connection->send_response_and_hold_status = 0; 2018 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 2019 return 1; 2020 } 2021 2022 if (hfp_connection->ok_pending){ 2023 hfp_connection->ok_pending = 0; 2024 hfp_connection->command = HFP_CMD_NONE; 2025 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2026 return 1; 2027 } 2028 2029 // update AG indicators 2030 if (hfp_connection->ag_indicators_status_update_bitmap){ 2031 int i; 2032 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 2033 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 2034 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 2035 if (!hfp_connection->enable_status_update_for_ag_indicators) { 2036 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 2037 break; 2038 } 2039 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 2040 return 1; 2041 } 2042 } 2043 } 2044 2045 if (hfp_connection->ag_send_no_carrier){ 2046 hfp_connection->ag_send_no_carrier = false; 2047 hfp_ag_send_no_carrier(hfp_connection->rfcomm_cid); 2048 return 1; 2049 } 2050 2051 if (hfp_connection->ag_ring){ 2052 hfp_connection->ag_ring = 0; 2053 hfp_connection->command = HFP_CMD_NONE; 2054 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 2055 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 2056 return 1; 2057 } 2058 2059 if (hfp_connection->ag_send_clip){ 2060 hfp_connection->ag_send_clip = 0; 2061 hfp_connection->command = HFP_CMD_NONE; 2062 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 2063 return 1; 2064 } 2065 2066 if (hfp_connection->send_phone_number_for_voice_tag){ 2067 hfp_connection->send_phone_number_for_voice_tag = 0; 2068 hfp_connection->command = HFP_CMD_NONE; 2069 hfp_connection->ok_pending = 1; 2070 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 2071 return 1; 2072 } 2073 2074 if (hfp_connection->send_subscriber_number){ 2075 if (hfp_connection->next_subscriber_number_to_send < hfp_ag_subscriber_numbers_count){ 2076 hfp_phone_number_t phone = hfp_ag_subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 2077 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 2078 } else { 2079 hfp_connection->send_subscriber_number = 0; 2080 hfp_connection->next_subscriber_number_to_send = 0; 2081 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2082 } 2083 hfp_connection->command = HFP_CMD_NONE; 2084 return 1; 2085 } 2086 2087 if (hfp_connection->send_microphone_gain){ 2088 hfp_connection->send_microphone_gain = 0; 2089 hfp_connection->command = HFP_CMD_NONE; 2090 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 2091 return 1; 2092 } 2093 2094 if (hfp_connection->send_speaker_gain){ 2095 hfp_connection->send_speaker_gain = 0; 2096 hfp_connection->command = HFP_CMD_NONE; 2097 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 2098 return 1; 2099 } 2100 2101 if (hfp_connection->send_ag_status_indicators){ 2102 hfp_connection->send_ag_status_indicators = 0; 2103 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 2104 return 1; 2105 } 2106 2107 return 0; 2108 } 2109 2110 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 2111 2112 btstack_assert(hfp_connection != NULL); 2113 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 2114 2115 // during SDP query, RFCOMM CID is not set 2116 if (hfp_connection->rfcomm_cid == 0) return; 2117 2118 // assert command could be sent 2119 if (hci_can_send_command_packet_now() == 0) return; 2120 2121 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 2122 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 2123 hfp_connection->release_audio_connection = 0; 2124 gap_disconnect(hfp_connection->sco_handle); 2125 return; 2126 } 2127 2128 #ifdef ENABLE_CC256X_ASSISTED_HFP 2129 // WBS Disassociate 2130 if (hfp_connection->cc256x_send_wbs_disassociate){ 2131 hfp_connection->cc256x_send_wbs_disassociate = false; 2132 hci_send_cmd(&hci_ti_wbs_disassociate); 2133 return; 2134 } 2135 // Write Codec Config 2136 if (hfp_connection->cc256x_send_write_codec_config){ 2137 hfp_connection->cc256x_send_write_codec_config = false; 2138 hfp_cc256x_write_codec_config(hfp_connection); 2139 return; 2140 } 2141 // WBS Associate 2142 if (hfp_connection->cc256x_send_wbs_associate){ 2143 hfp_connection->cc256x_send_wbs_associate = false; 2144 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 2145 return; 2146 } 2147 #endif 2148 #ifdef ENABLE_BCM_PCM_WBS 2149 // Enable WBS 2150 if (hfp_connection->bcm_send_enable_wbs){ 2151 hfp_connection->bcm_send_enable_wbs = false; 2152 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 2153 return; 2154 } 2155 // Write I2S/PCM params 2156 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 2157 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 2158 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 2159 return; 2160 } 2161 // Disable WBS 2162 if (hfp_connection->bcm_send_disable_wbs){ 2163 hfp_connection->bcm_send_disable_wbs = false; 2164 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 2165 return; 2166 } 2167 #endif 2168 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 2169 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 2170 hfp_finalize_connection_context(hfp_connection); 2171 return; 2172 } 2173 #endif 2174 2175 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 2176 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 2177 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2178 return; 2179 } 2180 2181 int cmd_sent = hfp_ag_send_commands(hfp_connection); 2182 2183 if (!cmd_sent){ 2184 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 2185 } 2186 2187 if (!cmd_sent){ 2188 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 2189 } 2190 2191 if (!cmd_sent){ 2192 cmd_sent = call_setup_state_machine(hfp_connection); 2193 } 2194 2195 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 2196 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 2197 switch (hfp_connection->codecs_state){ 2198 case HFP_CODECS_IDLE: 2199 case HFP_CODECS_RECEIVED_LIST: 2200 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2201 case HFP_CODECS_ERROR: 2202 hfp_connection->trigger_codec_exchange = 0; 2203 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2204 break; 2205 default: 2206 break; 2207 } 2208 } 2209 2210 if (!cmd_sent){ 2211 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 2212 } 2213 2214 if (!cmd_sent){ 2215 cmd_sent = hfp_ag_voice_recognition_state_machine(hfp_connection); 2216 } 2217 2218 // disconnect 2219 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 2220 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 2221 rfcomm_disconnect(hfp_connection->rfcomm_cid); 2222 } 2223 2224 if (cmd_sent){ 2225 hfp_connection->command = HFP_CMD_NONE; 2226 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2227 } 2228 } 2229 2230 static int hfp_parser_is_end_of_line(uint8_t byte){ 2231 return (byte == '\n') || (byte == '\r'); 2232 } 2233 2234 static void hfp_ag_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 2235 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 2236 if (size < 1) return; 2237 uint8_t status = ERROR_CODE_SUCCESS; 2238 2239 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 2240 #ifdef ENABLE_HFP_AT_MESSAGES 2241 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 2242 #endif 2243 2244 // process messages byte-wise 2245 int pos; 2246 for (pos = 0; pos < size ; pos++){ 2247 hfp_parse(hfp_connection, packet[pos], 0); 2248 2249 // parse until end of line 2250 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 2251 2252 hfp_generic_status_indicator_t * indicator; 2253 switch(hfp_connection->command){ 2254 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 2255 // dealt with in hfp_ag_voice_recognition_state_machine 2256 break; 2257 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 2258 if (hfp_ag_response_and_hold_active){ 2259 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 2260 } 2261 hfp_connection->ok_pending = 1; 2262 break; 2263 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 2264 switch(hfp_connection->ag_response_and_hold_action){ 2265 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 2266 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 2267 break; 2268 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 2269 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 2270 break; 2271 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 2272 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 2273 break; 2274 default: 2275 break; 2276 } 2277 hfp_connection->ok_pending = 1; 2278 break; 2279 case HFP_CMD_HF_INDICATOR_STATUS: 2280 hfp_connection->command = HFP_CMD_NONE; 2281 2282 if (hfp_connection->parser_indicator_index < hfp_ag_generic_status_indicators_nr){ 2283 indicator = &hfp_ag_generic_status_indicators[hfp_connection->parser_indicator_index]; 2284 switch (indicator->uuid){ 2285 case HFP_HF_INDICATOR_UUID_ENHANCED_SAFETY: 2286 if (hfp_connection->parser_indicator_value > 1) { 2287 hfp_connection->send_error = 1; 2288 break; 2289 } 2290 hfp_connection->ok_pending = 1; 2291 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2292 break; 2293 case HFP_HF_INDICATOR_UUID_BATTERY_LEVEL: 2294 if (hfp_connection->parser_indicator_value > 100){ 2295 hfp_connection->send_error = 1; 2296 break; 2297 } 2298 hfp_connection->ok_pending = 1; 2299 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2300 break; 2301 default: 2302 hfp_connection->send_error = 1; 2303 break; 2304 } 2305 } else { 2306 hfp_connection->send_error = 1; 2307 } 2308 break; 2309 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 2310 // expected by SLC state machine 2311 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 2312 hfp_connection->send_ag_indicators_segment = 0; 2313 hfp_connection->send_ag_status_indicators = 1; 2314 break; 2315 case HFP_CMD_LIST_CURRENT_CALLS: 2316 hfp_connection->command = HFP_CMD_NONE; 2317 hfp_connection->next_call_index = 0; 2318 hfp_connection->send_status_of_current_calls = 1; 2319 break; 2320 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 2321 if (hfp_ag_subscriber_numbers_count == 0){ 2322 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2323 break; 2324 } 2325 hfp_connection->next_subscriber_number_to_send = 0; 2326 hfp_connection->send_subscriber_number = 1; 2327 break; 2328 case HFP_CMD_TRANSMIT_DTMF_CODES: 2329 { 2330 hfp_connection->command = HFP_CMD_NONE; 2331 char buffer[2]; 2332 buffer[0] = (char) hfp_connection->ag_dtmf_code; 2333 buffer[1] = 0; 2334 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 2335 break; 2336 } 2337 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 2338 hfp_connection->command = HFP_CMD_NONE; 2339 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 2340 break; 2341 case HFP_CMD_TURN_OFF_EC_AND_NR: 2342 hfp_connection->command = HFP_CMD_NONE; 2343 2344 if (get_bit(hfp_ag_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 2345 hfp_connection->ok_pending = 1; 2346 hfp_ag_supported_features = store_bit(hfp_ag_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 2347 status = ERROR_CODE_SUCCESS; 2348 } else { 2349 hfp_connection->send_error = 1; 2350 status = ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2351 } 2352 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 2353 break; 2354 case HFP_CMD_CALL_ANSWERED: 2355 hfp_connection->command = HFP_CMD_NONE; 2356 log_info("HFP: ATA"); 2357 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 2358 break; 2359 case HFP_CMD_HANG_UP_CALL: 2360 hfp_connection->command = HFP_CMD_NONE; 2361 hfp_connection->ok_pending = 1; 2362 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 2363 break; 2364 case HFP_CMD_CALL_HOLD: { 2365 hfp_connection->command = HFP_CMD_NONE; 2366 hfp_connection->ok_pending = 1; 2367 2368 switch (hfp_connection->ag_call_hold_action){ 2369 case 0: 2370 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2371 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2372 break; 2373 case 1: 2374 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2375 // Where both a held and a waiting call exist, the above procedures shall apply to the 2376 // waiting call (i.e., not to the held call) in conflicting situation. 2377 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2378 break; 2379 case 2: 2380 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2381 // Where both a held and a waiting call exist, the above procedures shall apply to the 2382 // waiting call (i.e., not to the held call) in conflicting situation. 2383 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2384 break; 2385 case 3: 2386 // Adds a held call to the conversation. 2387 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2388 break; 2389 case 4: 2390 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2391 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2392 break; 2393 default: 2394 break; 2395 } 2396 hfp_connection->call_index = 0; 2397 break; 2398 } 2399 case HFP_CMD_CALL_PHONE_NUMBER: 2400 hfp_connection->command = HFP_CMD_NONE; 2401 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, hfp_connection); 2402 break; 2403 case HFP_CMD_REDIAL_LAST_NUMBER: 2404 hfp_connection->command = HFP_CMD_NONE; 2405 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2406 break; 2407 case HFP_CMD_ENABLE_CLIP: 2408 hfp_connection->command = HFP_CMD_NONE; 2409 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2410 hfp_connection->ok_pending = 1; 2411 break; 2412 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2413 hfp_connection->command = HFP_CMD_NONE; 2414 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2415 hfp_connection->ok_pending = 1; 2416 break; 2417 case HFP_CMD_SET_SPEAKER_GAIN: 2418 hfp_connection->command = HFP_CMD_NONE; 2419 hfp_connection->ok_pending = 1; 2420 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2421 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2422 break; 2423 case HFP_CMD_SET_MICROPHONE_GAIN: 2424 hfp_connection->command = HFP_CMD_NONE; 2425 hfp_connection->ok_pending = 1; 2426 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2427 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2428 break; 2429 default: 2430 break; 2431 } 2432 } 2433 } 2434 2435 static void hfp_ag_run(void){ 2436 btstack_linked_list_iterator_t it; 2437 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2438 while (btstack_linked_list_iterator_has_next(&it)){ 2439 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2440 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2441 hfp_ag_run_for_context(hfp_connection); 2442 } 2443 } 2444 2445 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2446 hfp_connection_t * hfp_connection = NULL; 2447 switch (packet_type){ 2448 case RFCOMM_DATA_PACKET: 2449 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 2450 btstack_assert(hfp_connection != NULL); 2451 2452 hfp_ag_handle_rfcomm_data(hfp_connection, packet, size); 2453 hfp_ag_run_for_context(hfp_connection); 2454 return; 2455 case HCI_EVENT_PACKET: 2456 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2457 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2458 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid); 2459 btstack_assert(hfp_connection != NULL); 2460 2461 hfp_ag_run_for_context(hfp_connection); 2462 return; 2463 } 2464 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2465 break; 2466 default: 2467 break; 2468 } 2469 2470 hfp_ag_run(); 2471 } 2472 2473 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2474 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2475 hfp_ag_run(); 2476 } 2477 2478 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2479 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2480 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2481 return; 2482 } 2483 int i; 2484 hfp_ag_codecs_nr = codecs_nr; 2485 for (i=0; i < codecs_nr; i++){ 2486 hfp_ag_codecs[i] = codecs[i]; 2487 } 2488 } 2489 2490 void hfp_ag_init_supported_features(uint32_t supported_features){ 2491 hfp_ag_supported_features = supported_features; 2492 } 2493 2494 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2495 hfp_ag_indicators_nr = ag_indicators_nr; 2496 (void)memcpy(hfp_ag_indicators, ag_indicators, 2497 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2498 } 2499 2500 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2501 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2502 hfp_ag_generic_status_indicators_nr = hf_indicators_nr; 2503 (void)memcpy(hfp_ag_generic_status_indicators, hf_indicators, 2504 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2505 } 2506 2507 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2508 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2509 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2510 call_hold_services_nr * sizeof(char *)); 2511 } 2512 2513 2514 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2515 2516 hfp_init(); 2517 hfp_ag_call_hold_services_nr = 0; 2518 hfp_ag_response_and_hold_active = 0; 2519 hfp_ag_indicators_nr = 0; 2520 hfp_ag_codecs_nr = 0; 2521 hfp_ag_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2522 hfp_ag_subscriber_numbers = NULL; 2523 hfp_ag_subscriber_numbers_count = 0; 2524 2525 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2526 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2527 2528 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2529 2530 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2531 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2532 2533 hfp_gsm_init(); 2534 } 2535 2536 void hfp_ag_deinit(void){ 2537 hfp_deinit(); 2538 hfp_gsm_deinit(); 2539 2540 hfp_ag_callback = NULL; 2541 hfp_ag_supported_features = 0; 2542 hfp_ag_codecs_nr = 0; 2543 hfp_ag_indicators_nr = 0; 2544 hfp_ag_call_hold_services_nr = 0; 2545 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2546 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 2547 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2548 hfp_ag_subscriber_numbers = NULL; 2549 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2550 } 2551 2552 uint8_t hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2553 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2554 } 2555 2556 uint8_t hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2557 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2558 if (!hfp_connection){ 2559 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2560 } 2561 2562 hfp_trigger_release_service_level_connection(hfp_connection); 2563 hfp_ag_run_for_context(hfp_connection); 2564 return ERROR_CODE_SUCCESS; 2565 } 2566 2567 uint8_t hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2568 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2569 if (!hfp_connection){ 2570 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2571 } 2572 2573 hfp_connection->extended_audio_gateway_error = 0; 2574 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2575 return ERROR_CODE_COMMAND_DISALLOWED; 2576 } 2577 2578 hfp_connection->extended_audio_gateway_error = error; 2579 hfp_ag_run_for_context(hfp_connection); 2580 return ERROR_CODE_SUCCESS; 2581 } 2582 2583 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2584 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 2585 return ERROR_CODE_COMMAND_DISALLOWED; 2586 } 2587 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 2588 return ERROR_CODE_COMMAND_DISALLOWED; 2589 } 2590 2591 hfp_connection->establish_audio_connection = 1; 2592 if (!has_codec_negotiation_feature(hfp_connection)){ 2593 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2594 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2595 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2596 // now, pick link settings 2597 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2598 #ifdef ENABLE_CC256X_ASSISTED_HFP 2599 hfp_cc256x_prepare_for_sco(hfp_connection); 2600 #endif 2601 return ERROR_CODE_SUCCESS; 2602 } 2603 2604 uint8_t i; 2605 bool codec_was_in_use = false; 2606 bool better_codec_can_be_used = false; 2607 2608 for (i = 0; i<hfp_connection->remote_codecs_nr; i++){ 2609 if (hfp_connection->negotiated_codec == hfp_connection->remote_codecs[i]){ 2610 codec_was_in_use = true; 2611 } else if (hfp_connection->negotiated_codec < hfp_connection->remote_codecs[i]){ 2612 better_codec_can_be_used = true; 2613 } 2614 } 2615 2616 if (!codec_was_in_use || better_codec_can_be_used){ 2617 hfp_connection->trigger_codec_exchange = 1; 2618 hfp_connection->codecs_state = HFP_CODECS_IDLE; 2619 } 2620 return ERROR_CODE_SUCCESS; 2621 } 2622 2623 uint8_t hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2624 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2625 if (!hfp_connection){ 2626 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2627 } 2628 uint8_t status = hfp_ag_setup_audio_connection(hfp_connection); 2629 if (status != ERROR_CODE_SUCCESS){ 2630 return status; 2631 } 2632 hfp_ag_run_for_context(hfp_connection); 2633 return ERROR_CODE_SUCCESS; 2634 } 2635 2636 uint8_t hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2637 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2638 if (!hfp_connection){ 2639 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2640 } 2641 2642 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 2643 return ERROR_CODE_COMMAND_DISALLOWED; 2644 } 2645 2646 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 2647 if (status == ERROR_CODE_SUCCESS){ 2648 hfp_ag_run_for_context(hfp_connection); 2649 } 2650 return status; 2651 } 2652 2653 /** 2654 * @brief Enable in-band ring tone 2655 */ 2656 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2657 if (get_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2658 return; 2659 } 2660 2661 hfp_ag_supported_features = store_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2662 2663 btstack_linked_list_iterator_t it; 2664 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2665 while (btstack_linked_list_iterator_has_next(&it)){ 2666 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2667 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2668 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2669 hfp_ag_run_for_context(hfp_connection); 2670 } 2671 } 2672 2673 /** 2674 * @brief Called from GSM 2675 */ 2676 void hfp_ag_incoming_call(void){ 2677 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2678 } 2679 2680 void hfp_ag_outgoing_call_initiated(const char * number) { 2681 UNUSED(number); 2682 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, NULL); 2683 } 2684 2685 /** 2686 * @brief number is stored. 2687 */ 2688 void hfp_ag_set_clip(uint8_t type, const char * number){ 2689 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2690 } 2691 2692 void hfp_ag_call_dropped(void){ 2693 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2694 } 2695 2696 // call from AG UI 2697 void hfp_ag_answer_incoming_call(void){ 2698 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2699 } 2700 2701 void hfp_ag_join_held_call(void){ 2702 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2703 } 2704 2705 void hfp_ag_terminate_call(void){ 2706 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2707 } 2708 2709 void hfp_ag_outgoing_call_ringing(void){ 2710 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2711 } 2712 2713 void hfp_ag_outgoing_call_established(void){ 2714 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2715 } 2716 2717 void hfp_ag_outgoing_call_rejected(void){ 2718 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2719 } 2720 2721 void hfp_ag_outgoing_call_accepted(void){ 2722 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2723 } 2724 2725 void hfp_ag_hold_incoming_call(void){ 2726 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2727 } 2728 2729 void hfp_ag_accept_held_incoming_call(void) { 2730 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2731 } 2732 2733 void hfp_ag_reject_held_incoming_call(void){ 2734 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2735 } 2736 2737 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2738 int indicator_index = get_ag_indicator_index_for_name(name); 2739 if (indicator_index < 0) return; 2740 hfp_ag_indicators[indicator_index].status = value; 2741 2742 btstack_linked_list_iterator_t it; 2743 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2744 while (btstack_linked_list_iterator_has_next(&it)){ 2745 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2746 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2747 if (!hfp_connection->ag_indicators[indicator_index].enabled) { 2748 log_info("Requested AG indicator '%s' update to %u, but it is not enabled", hfp_ag_indicators[indicator_index].name, value); 2749 continue; 2750 } 2751 log_info("AG indicator '%s' changed to %u, request transfer status", hfp_ag_indicators[indicator_index].name, value); 2752 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2753 hfp_ag_run_for_context(hfp_connection); 2754 } 2755 } 2756 2757 uint8_t hfp_ag_set_registration_status(int registration_status){ 2758 if ((registration_status < 0) || (registration_status > 1)){ 2759 return ERROR_CODE_COMMAND_DISALLOWED; 2760 } 2761 2762 if ( (registration_status == 0) && (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 2763 2764 // if network goes away wihle a call is active: 2765 // - the call gets dropped 2766 // - we send NO CARRIER 2767 // NOTE: the CALL=0 has to be sent before NO CARRIER 2768 2769 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2770 2771 btstack_linked_list_iterator_t it; 2772 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2773 while (btstack_linked_list_iterator_has_next(&it)){ 2774 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2775 hfp_connection->ag_send_no_carrier = true; 2776 } 2777 } 2778 hfp_ag_set_ag_indicator("service", registration_status); 2779 return ERROR_CODE_SUCCESS; 2780 } 2781 2782 uint8_t hfp_ag_set_signal_strength(int signal_strength){ 2783 if ((signal_strength < 0) || (signal_strength > 5)){ 2784 return ERROR_CODE_COMMAND_DISALLOWED; 2785 } 2786 2787 hfp_ag_set_ag_indicator("signal", signal_strength); 2788 return ERROR_CODE_SUCCESS; 2789 } 2790 2791 uint8_t hfp_ag_set_roaming_status(int roaming_status){ 2792 if ((roaming_status < 0) || (roaming_status > 1)){ 2793 return ERROR_CODE_COMMAND_DISALLOWED; 2794 } 2795 2796 hfp_ag_set_ag_indicator("roam", roaming_status); 2797 return ERROR_CODE_SUCCESS; 2798 } 2799 2800 uint8_t hfp_ag_set_battery_level(int battery_level){ 2801 if ((battery_level < 0) || (battery_level > 5)){ 2802 return ERROR_CODE_COMMAND_DISALLOWED; 2803 } 2804 hfp_ag_set_ag_indicator("battchg", battery_level); 2805 return ERROR_CODE_SUCCESS; 2806 } 2807 2808 uint8_t hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle){ 2809 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2810 if (!hfp_connection){ 2811 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2812 } 2813 2814 bool enhanced_vra_supported = hfp_ag_enhanced_vra_flag_supported(hfp_connection); 2815 bool legacy_vra_supported = hfp_ag_vra_flag_supported(hfp_connection); 2816 if (!enhanced_vra_supported && !legacy_vra_supported){ 2817 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2818 } 2819 2820 if (!hfp_ag_can_activate_voice_recognition(hfp_connection)){ 2821 return ERROR_CODE_COMMAND_DISALLOWED; 2822 } 2823 2824 hfp_connection->ag_activate_voice_recognition_value = 1; 2825 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 2826 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2827 // hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 2828 hfp_connection->ag_audio_connection_opened_before_vra = hfp_ag_is_audio_connection_active(hfp_connection); 2829 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2830 hfp_ag_run_for_context(hfp_connection); 2831 return ERROR_CODE_SUCCESS; 2832 } 2833 2834 uint8_t hfp_ag_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2835 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2836 if (!hfp_connection){ 2837 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2838 } 2839 2840 bool enhanced_vra_supported = hfp_ag_enhanced_vra_flag_supported(hfp_connection); 2841 bool legacy_vra_supported = hfp_ag_vra_flag_supported(hfp_connection); 2842 2843 if (!enhanced_vra_supported && !legacy_vra_supported){ 2844 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2845 } 2846 2847 if (!hfp_ag_voice_recognition_session_active(hfp_connection)){ 2848 return ERROR_CODE_COMMAND_DISALLOWED; 2849 } 2850 2851 hfp_connection->ag_activate_voice_recognition_value = 0; 2852 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2853 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2854 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2855 hfp_ag_run_for_context(hfp_connection); 2856 return ERROR_CODE_SUCCESS; 2857 } 2858 2859 static uint8_t hfp_ag_enhanced_voice_recognition_send_state(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state){ 2860 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2861 if (!hfp_connection){ 2862 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2863 } 2864 2865 bool enhanced_vra_supported = hfp_ag_enhanced_vra_flag_supported(hfp_connection); 2866 if (!enhanced_vra_supported ){ 2867 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2868 } 2869 2870 if (!hfp_ag_voice_recognition_session_active(hfp_connection)){ 2871 return ERROR_CODE_COMMAND_DISALLOWED; 2872 } 2873 2874 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2875 hfp_connection->ag_vra_state = state; 2876 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_STATUS; 2877 hfp_ag_run_for_context(hfp_connection); 2878 return ERROR_CODE_SUCCESS; 2879 } 2880 2881 uint8_t hfp_ag_enhanced_voice_recognition_report_sending_audio(hci_con_handle_t acl_handle){ 2882 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_STARTING_SOUND); 2883 } 2884 uint8_t hfp_ag_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 2885 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_READY_TO_ACCEPT_AUDIO_INPUT); 2886 } 2887 uint8_t hfp_ag_enhanced_voice_recognition_report_processing_input(hci_con_handle_t acl_handle){ 2888 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_PROCESSING_AUDIO_INPUT); 2889 } 2890 2891 2892 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){ 2893 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2894 if (!hfp_connection){ 2895 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2896 } 2897 2898 bool enhanced_vra_supported = hfp_ag_enhanced_vra_flag_supported(hfp_connection); 2899 if (!enhanced_vra_supported ){ 2900 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2901 } 2902 2903 bool enhanced_vra_msg_supported = hfp_ag_can_send_enhanced_vra_message_flag_supported(hfp_connection); 2904 if (!enhanced_vra_msg_supported ){ 2905 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2906 } 2907 2908 if (!hfp_ag_voice_recognition_session_active(hfp_connection)){ 2909 return ERROR_CODE_COMMAND_DISALLOWED; 2910 } 2911 2912 uint16_t message_len = strlen(msg.text); 2913 2914 if ((message_len == 0) || ((message_len + 1) > HFP_MAX_VR_TEXT_SIZE)){ 2915 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2916 } 2917 2918 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2919 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_MSG; 2920 hfp_connection->ag_msg = msg; 2921 hfp_connection->ag_vra_state = state; 2922 hfp_ag_run_for_context(hfp_connection); 2923 2924 return ERROR_CODE_SUCCESS; 2925 } 2926 2927 2928 uint8_t hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2929 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2930 if (!hfp_connection){ 2931 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2932 } 2933 2934 if ((gain < 0) || (gain > 15)){ 2935 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2936 return ERROR_CODE_COMMAND_DISALLOWED; 2937 } 2938 2939 if (hfp_connection->microphone_gain != gain){ 2940 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2941 hfp_connection->microphone_gain = gain; 2942 hfp_connection->send_microphone_gain = 1; 2943 } 2944 hfp_ag_run_for_context(hfp_connection); 2945 return ERROR_CODE_SUCCESS; 2946 } 2947 2948 uint8_t hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2949 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2950 if (!hfp_connection){ 2951 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2952 } 2953 2954 if ((gain < 0) || (gain > 15)){ 2955 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2956 return ERROR_CODE_COMMAND_DISALLOWED; 2957 } 2958 2959 if (hfp_connection->speaker_gain != gain){ 2960 hfp_connection->speaker_gain = gain; 2961 hfp_connection->send_speaker_gain = 1; 2962 } 2963 hfp_ag_run_for_context(hfp_connection); 2964 return ERROR_CODE_SUCCESS; 2965 } 2966 2967 uint8_t hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2968 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2969 if (!hfp_connection){ 2970 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2971 } 2972 2973 hfp_ag_set_clip(0, number); 2974 hfp_connection->send_phone_number_for_voice_tag = 1; 2975 return ERROR_CODE_SUCCESS; 2976 } 2977 2978 uint8_t hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2979 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2980 if (!hfp_connection){ 2981 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2982 } 2983 2984 hfp_connection->send_error = 1; 2985 return ERROR_CODE_SUCCESS; 2986 } 2987 2988 uint8_t hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2989 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2990 if (!hfp_connection){ 2991 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2992 } 2993 2994 hfp_connection->ok_pending = 1; 2995 return ERROR_CODE_SUCCESS; 2996 } 2997 2998 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2999 hfp_ag_subscriber_numbers = numbers; 3000 hfp_ag_subscriber_numbers_count = numbers_count; 3001 } 3002 3003 void hfp_ag_clear_last_dialed_number(void){ 3004 hfp_gsm_clear_last_dialed_number(); 3005 } 3006 3007 void hfp_ag_set_last_dialed_number(const char * number){ 3008 hfp_gsm_set_last_dialed_number(number); 3009 } 3010 3011 uint8_t hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 3012 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3013 if (!hfp_connection){ 3014 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3015 } 3016 3017 if (!hfp_connection->call_waiting_notification_enabled){ 3018 return ERROR_CODE_COMMAND_DISALLOWED; 3019 } 3020 3021 hfp_connection->ag_notify_incoming_call_waiting = 1; 3022 hfp_ag_run_for_context(hfp_connection); 3023 return ERROR_CODE_SUCCESS; 3024 } 3025 3026 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){ 3027 if (!name){ 3028 name = hfp_ag_default_service_name; 3029 } 3030 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 3031 3032 /* 3033 * 0x01 – Ability to reject a call 3034 * 0x00 – No ability to reject a call 3035 */ 3036 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 3037 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 3038 3039 // Construct SupportedFeatures for SDP bitmap: 3040 // 3041 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 3042 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 3043 // 3044 // Wide band speech (bit 5) requires Codec negotiation 3045 // 3046 uint16_t sdp_features = supported_features & 0x1f; 3047 if ( (wide_band_speech == 1) && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 3048 sdp_features |= 1 << 5; 3049 } 3050 3051 if (supported_features & (1 << HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 3052 sdp_features |= 1 << 6; 3053 } 3054 3055 if (supported_features & (1 << HFP_AGSF_VOICE_RECOGNITION_TEXT)){ 3056 sdp_features |= 1 << 7; 3057 } 3058 3059 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 3060 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 3061 } 3062 3063 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 3064 btstack_assert(callback != NULL); 3065 3066 hfp_ag_callback = callback; 3067 hfp_set_ag_callback(callback); 3068 } 3069