1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hfp_ag.c" 39 40 // ***************************************************************************** 41 // 42 // HFP Audio Gateway (AG) unit 43 // 44 // ***************************************************************************** 45 46 #include "btstack_config.h" 47 48 #include <stdint.h> 49 #include <stdio.h> 50 #include <string.h> 51 52 #include "hci_cmd.h" 53 #include "btstack_run_loop.h" 54 55 #include "bluetooth_sdp.h" 56 #include "hci.h" 57 #include "btstack_memory.h" 58 #include "hci_dump.h" 59 #include "l2cap.h" 60 #include "btstack_debug.h" 61 #include "btstack_event.h" 62 #include "classic/core.h" 63 #include "classic/hfp.h" 64 #include "classic/hfp_ag.h" 65 #include "classic/hfp_gsm_model.h" 66 #include "classic/sdp_client_rfcomm.h" 67 #include "classic/sdp_server.h" 68 #include "classic/sdp_util.h" 69 70 // private prototypes 71 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection); 72 static void hfp_ag_hf_start_ringing_incoming(hfp_connection_t * hfp_connection); 73 static void hfp_ag_hf_start_ringing_outgoing(hfp_connection_t * hfp_connection); 74 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 75 76 // public prototypes 77 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 78 int get_hfp_generic_status_indicators_nr(void); 79 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 80 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 81 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 82 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 83 84 #define HFP_SUBEVENT_INVALID 0xFFFF 85 86 // const 87 static const char hfp_ag_default_service_name[] = "Voice gateway"; 88 89 // globals 90 91 // higher layer callbacks 92 static btstack_packet_handler_t hfp_ag_callback; 93 94 static btstack_packet_callback_registration_t hfp_ag_hci_event_callback_registration; 95 96 static uint16_t hfp_ag_supported_features; 97 98 // codecs 99 static uint8_t hfp_ag_codecs_nr; 100 static uint8_t hfp_ag_codecs[HFP_MAX_NUM_CODECS]; 101 102 // AG indicators 103 static int hfp_ag_indicators_nr; 104 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_INDICATORS]; 105 106 // generic status indicators 107 static int hfp_ag_generic_status_indicators_nr; 108 static hfp_generic_status_indicator_t hfp_ag_generic_status_indicators[HFP_MAX_NUM_INDICATORS]; 109 110 static int hfp_ag_call_hold_services_nr; 111 static char * hfp_ag_call_hold_services[6]; 112 113 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 114 static int hfp_ag_response_and_hold_active; 115 116 // Subscriber information entries 117 static hfp_phone_number_t * hfp_ag_subscriber_numbers; 118 static int hfp_ag_subscriber_numbers_count; 119 120 // call state 121 static btstack_timer_source_t hfp_ag_ring_timeout; 122 123 // code 124 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 125 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 126 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 127 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 128 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 129 } 130 return hfp_connection->ag_indicators_nr; 131 } 132 133 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 134 // TODO: save only value, and value changed in the hfp_connection? 135 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 136 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 137 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 138 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 139 } 140 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 141 } 142 143 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 144 int i; 145 for (i = 0; i < hfp_ag_indicators_nr; i++){ 146 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 147 return &hfp_ag_indicators[i]; 148 } 149 } 150 return NULL; 151 } 152 153 static int get_ag_indicator_index_for_name(const char * name){ 154 int i; 155 for (i = 0; i < hfp_ag_indicators_nr; i++){ 156 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 157 return i; 158 } 159 } 160 return -1; 161 } 162 163 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 164 btstack_linked_list_iterator_t it; 165 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 166 while (btstack_linked_list_iterator_has_next(&it)){ 167 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 168 if (hfp_connection->acl_handle != handle) continue; 169 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 170 return hfp_connection; 171 } 172 return NULL; 173 } 174 175 static int use_in_band_tone(void){ 176 return get_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 177 } 178 179 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 180 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 181 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 182 return hf && ag; 183 } 184 185 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 186 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 187 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_THREE_WAY_CALLING); 188 return hf && ag; 189 } 190 191 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 192 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 193 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_HF_INDICATORS); 194 return hf && ag; 195 } 196 197 /* unsolicited responses */ 198 199 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 200 char buffer[20]; 201 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", 202 HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 203 buffer[sizeof(buffer) - 1] = 0; 204 return send_str_over_rfcomm(cid, buffer); 205 } 206 207 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 208 char buffer[40]; 209 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n\r\nOK\r\n", 210 HFP_SUPPORTED_FEATURES, hfp_ag_supported_features); 211 buffer[sizeof(buffer) - 1] = 0; 212 return send_str_over_rfcomm(cid, buffer); 213 } 214 215 static int hfp_ag_send_ok(uint16_t cid){ 216 char buffer[10]; 217 snprintf(buffer, sizeof(buffer), "\r\nOK\r\n"); 218 buffer[sizeof(buffer) - 1] = 0; 219 return send_str_over_rfcomm(cid, buffer); 220 } 221 222 static int hfp_ag_send_ring(uint16_t cid){ 223 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 224 } 225 226 static int hfp_ag_send_no_carrier(uint16_t cid){ 227 char buffer[15]; 228 snprintf(buffer, sizeof(buffer), "\r\nNO CARRIER\r\n"); 229 buffer[sizeof(buffer) - 1] = 0; 230 return send_str_over_rfcomm(cid, buffer); 231 } 232 233 static int hfp_ag_send_clip(uint16_t cid){ 234 char buffer[50]; 235 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, 236 hfp_gsm_clip_number(), hfp_gsm_clip_type()); 237 buffer[sizeof(buffer) - 1] = 0; 238 return send_str_over_rfcomm(cid, buffer); 239 } 240 241 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 242 char buffer[50]; 243 snprintf(buffer, sizeof(buffer), "\r\n%s: ,\"%s\",%u, , \r\n", 244 HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 245 buffer[sizeof(buffer) - 1] = 0; 246 return send_str_over_rfcomm(cid, buffer); 247 } 248 249 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 250 char buffer[50]; 251 snprintf(buffer, sizeof(buffer), "\r\n%s: %s\r\n", 252 HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 253 buffer[sizeof(buffer) - 1] = 0; 254 return send_str_over_rfcomm(cid, buffer); 255 } 256 257 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 258 char buffer[50]; 259 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", 260 HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), 261 hfp_gsm_clip_type()); 262 buffer[sizeof(buffer) - 1] = 0; 263 return send_str_over_rfcomm(cid, buffer); 264 } 265 266 static int hfp_ag_send_error(uint16_t cid){ 267 char buffer[10]; 268 snprintf(buffer, sizeof(buffer), "\r\nERROR\r\n"); 269 buffer[sizeof(buffer) - 1] = 0; 270 return send_str_over_rfcomm(cid, buffer); 271 } 272 273 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 274 char buffer[20]; 275 snprintf(buffer, sizeof(buffer), "\r\n%s=%d\r\n", 276 HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 277 buffer[sizeof(buffer) - 1] = 0; 278 return send_str_over_rfcomm(cid, buffer); 279 } 280 281 // get size for indicator string 282 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 283 // template: ("$NAME",($MIN,$MAX)) 284 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 285 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 286 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 287 } 288 289 // store indicator 290 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer, uint16_t buffer_size){ 291 snprintf((char *)buffer, buffer_size, "(\"%s\",(%d,%d)),", 292 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 293 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 294 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 295 ((char *)buffer)[buffer_size - 1] = 0; 296 } 297 298 // structure: header [indicator [comma indicator]] footer 299 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 300 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 301 if (!num_indicators) return 2; 302 return 3 + ((num_indicators-1) * 2); 303 } 304 305 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 306 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 307 if (index == 0) { 308 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 309 } 310 index--; 311 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 312 int indicator_index = index >> 1; 313 if ((index & 1) == 0){ 314 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 315 } 316 if (indicator_index == (num_indicators - 1)){ 317 return 8; // "\r\n\r\nOK\r\n" 318 } 319 return 1; // comma 320 } 321 322 static void hfp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer, uint16_t buffer_size){ 323 if (index == 0){ 324 *buffer++ = '\r'; 325 *buffer++ = '\n'; 326 int len = strlen(HFP_INDICATOR); 327 (void)memcpy(buffer, HFP_INDICATOR, len); 328 buffer += len; 329 *buffer++ = ':'; 330 return; 331 } 332 index--; 333 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 334 int indicator_index = index >> 1; 335 if ((index & 1) == 0){ 336 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer, buffer_size); 337 return; 338 } 339 if (indicator_index == (num_indicators-1)){ 340 (void)memcpy(buffer, "\r\n\r\nOK\r\n", 8); 341 return; 342 } 343 *buffer = ','; 344 } 345 346 static int hfp_ag_generic_indicators_join(char * buffer, int buffer_size){ 347 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 348 int i; 349 int offset = 0; 350 for (i = 0; i < (hfp_ag_generic_status_indicators_nr - 1); i++) { 351 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_generic_status_indicators[i].uuid); 352 } 353 if (i < hfp_ag_generic_status_indicators_nr){ 354 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_generic_status_indicators[i].uuid); 355 } 356 return offset; 357 } 358 359 static int hfp_ag_generic_indicators_initial_status_join(char * buffer, int buffer_size){ 360 if (buffer_size < (hfp_ag_generic_status_indicators_nr * 3)) return 0; 361 int i; 362 int offset = 0; 363 for (i = 0; i < hfp_ag_generic_status_indicators_nr; i++) { 364 offset += snprintf(buffer+offset, buffer_size-offset, "\r\n%s:%d,%d\r\n", HFP_GENERIC_STATUS_INDICATOR, hfp_ag_generic_status_indicators[i].uuid, hfp_ag_generic_status_indicators[i].state); 365 } 366 return offset; 367 } 368 369 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 370 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 371 int i; 372 int offset = 0; 373 for (i = 0; i < (hfp_ag_indicators_nr-1); i++) { 374 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 375 } 376 if (i<hfp_ag_indicators_nr){ 377 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 378 } 379 return offset; 380 } 381 382 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 383 if (buffer_size < (hfp_ag_call_hold_services_nr * 3)) return 0; 384 int i; 385 int offset = snprintf(buffer, buffer_size, "("); 386 for (i = 0; i < (hfp_ag_call_hold_services_nr-1); i++) { 387 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 388 } 389 if (i<hfp_ag_call_hold_services_nr){ 390 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 391 } 392 return offset; 393 } 394 395 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 396 int start_segment, int num_segments, 397 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 398 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer, uint16_t buffer_size)){ 399 400 // assumes: can send now == true 401 // assumes: num segments > 0 402 // assumes: individual segments are smaller than MTU 403 rfcomm_reserve_packet_buffer(); 404 int mtu = rfcomm_get_max_frame_size(cid); 405 uint8_t * data = rfcomm_get_outgoing_buffer(); 406 int offset = 0; 407 int segment = start_segment; 408 while (segment < num_segments){ 409 int segment_len = get_segment_len(hfp_connection, segment); 410 if ((offset + segment_len + 1) > mtu) break; 411 // append segment. As it appends a '\0', we provide a buffer one byte larger 412 store_segment(hfp_connection, segment, data+offset, segment_len + 1); 413 offset += segment_len; 414 segment++; 415 } 416 rfcomm_send_prepared(cid, offset); 417 #ifdef ENABLE_HFP_AT_MESSAGES 418 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_SENT, (char *) data); 419 #endif 420 return segment; 421 } 422 423 // returns next segment to store 424 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 425 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 426 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 427 hfp_ag_indicators_cmd_generator_get_segment_len, 428 hfp_ag_indicators_cmd_generator_store_segment); 429 } 430 431 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 432 char buffer[40]; 433 const int size = sizeof(buffer); 434 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 435 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 436 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 437 return send_str_over_rfcomm(cid, buffer); 438 } 439 440 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 441 char buffer[40]; 442 const int size = sizeof(buffer); 443 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 444 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 445 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 446 return send_str_over_rfcomm(cid, buffer); 447 } 448 449 450 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 451 return hfp_ag_send_ok(cid); 452 } 453 454 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 455 char buffer[40]; 456 const int size = sizeof(buffer); 457 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 458 offset += hfp_ag_generic_indicators_join(buffer + offset, size - offset - 10); 459 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 460 return send_str_over_rfcomm(cid, buffer); 461 } 462 463 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 464 char buffer[40]; 465 int offset = hfp_ag_generic_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 466 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 467 return send_str_over_rfcomm(cid, buffer); 468 } 469 470 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 471 char buffer[20]; 472 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d\r\n", 473 HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, 474 indicator->status); 475 buffer[sizeof(buffer) - 1] = 0; 476 return send_str_over_rfcomm(cid, buffer); 477 } 478 479 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 480 char buffer[41]; 481 if (strlen(op.name) == 0){ 482 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 483 } else { 484 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 485 offset += snprintf(buffer+offset, 16, "%s", op.name); 486 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 487 } 488 return send_str_over_rfcomm(cid, buffer); 489 } 490 491 static inline int hfp_ag_send_cmd_with_space_and_int(uint16_t cid, const char * cmd, uint8_t value){ 492 char buffer[30]; 493 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", cmd, value); 494 return send_str_over_rfcomm(cid, buffer); 495 } 496 497 498 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 499 char buffer[30]; 500 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 501 return send_str_over_rfcomm(cid, buffer); 502 } 503 504 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 505 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 506 } 507 508 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 509 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 510 } 511 512 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 513 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 514 } 515 516 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 517 return hfp_ag_send_cmd_with_space_and_int(cid, HFP_RESPONSE_AND_HOLD, state); 518 } 519 520 static int hfp_ag_send_enhanced_voice_recognition_state_cmd(hfp_connection_t * hfp_connection){ 521 char buffer[30]; 522 snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, hfp_connection->enhanced_voice_recognition_enabled, hfp_connection->ag_vra_state); 523 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 524 } 525 526 static int hfp_ag_send_voice_recognition_cmd(hfp_connection_t * hfp_connection, uint8_t activate_voice_recognition){ 527 char buffer[30]; 528 if (hfp_connection->enhanced_voice_recognition_enabled){ 529 snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition, hfp_connection->ag_vra_state); 530 } else { 531 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 532 } 533 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 534 } 535 536 static int hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection_t * hfp_connection){ 537 char buffer[100]; 538 snprintf(buffer, sizeof(buffer), "\r\n%s: 1,%d,%X,%d,%d,\"%s\"\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, 539 hfp_connection->ag_vra_state, 540 hfp_connection->ag_msg.text_id, 541 hfp_connection->ag_msg.text_type, 542 hfp_connection->ag_msg.text_operation, 543 hfp_connection->ag_msg.text); 544 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 545 } 546 547 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 548 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 549 550 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_ag_codecs_nr, hfp_ag_codecs)){ 551 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 552 return HFP_CODEC_MSBC; 553 } 554 } 555 return HFP_CODEC_CVSD; 556 } 557 558 /* state machines */ 559 560 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 561 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_ag_supported_features & (1 << HFP_AGSF_ESCO_S4)); 562 } 563 564 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 565 /* events ( == commands): 566 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 567 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 568 hf_trigger_codec_connection_setup == received BCC 569 ag_trigger_codec_connection_setup == received from AG to send BCS 570 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 571 */ 572 switch (hfp_connection->codecs_state){ 573 case HFP_CODECS_EXCHANGED: 574 if (hfp_connection->command == HFP_CMD_AVAILABLE_CODECS){ 575 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 576 return 1; 577 } 578 break; 579 580 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 581 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 582 break; 583 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 584 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 585 break; 586 default: 587 break; 588 } 589 590 switch (hfp_connection->command){ 591 case HFP_CMD_AVAILABLE_CODECS: 592 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 593 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 594 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 595 return 1; 596 } 597 598 switch (hfp_connection->codecs_state){ 599 case HFP_CODECS_AG_SENT_COMMON_CODEC: 600 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 601 break; 602 default: 603 break; 604 } 605 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 606 return 1; 607 608 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 609 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 610 hfp_connection->establish_audio_connection = 1; 611 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 612 return 1; 613 614 case HFP_CMD_AG_SEND_COMMON_CODEC: 615 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 616 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 617 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 618 return 1; 619 620 case HFP_CMD_HF_CONFIRMED_CODEC: 621 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 622 hfp_connection->codecs_state = HFP_CODECS_ERROR; 623 hfp_ag_send_error(hfp_connection->rfcomm_cid); 624 return 1; 625 } 626 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 627 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 628 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 629 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 630 // now, pick link settings 631 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 632 #ifdef ENABLE_CC256X_ASSISTED_HFP 633 hfp_cc256x_prepare_for_sco(hfp_connection); 634 #endif 635 return 1; 636 default: 637 break; 638 } 639 return 0; 640 } 641 642 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 643 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 644 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 645 646 // if active call exist, set per-hfp_connection state active, too (when audio is on) 647 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 648 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 649 } 650 // if AG is ringing, also start ringing on the HF 651 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 652 switch (hfp_gsm_callsetup_status()){ 653 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 654 hfp_ag_hf_start_ringing_incoming(hfp_connection); 655 break; 656 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 657 hfp_ag_hf_start_ringing_outgoing(hfp_connection); 658 break; 659 default: 660 break; 661 } 662 } 663 } 664 665 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 666 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 667 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 668 int sent = 0; 669 switch(hfp_connection->command){ 670 case HFP_CMD_SUPPORTED_FEATURES: 671 switch(hfp_connection->state){ 672 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 673 case HFP_EXCHANGE_SUPPORTED_FEATURES: 674 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_ag_codecs, &hfp_ag_codecs_nr); 675 if (has_codec_negotiation_feature(hfp_connection)){ 676 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 677 } else { 678 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 679 } 680 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 681 return 1; 682 default: 683 break; 684 } 685 break; 686 case HFP_CMD_AVAILABLE_CODECS: 687 sent = codecs_exchange_state_machine(hfp_connection); 688 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 689 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 690 } 691 return sent; 692 693 case HFP_CMD_RETRIEVE_AG_INDICATORS: 694 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 695 // HF requested AG Indicators and we did expect it 696 hfp_connection->send_ag_indicators_segment = 0; 697 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 698 // continue below in state switch 699 } 700 break; 701 702 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 703 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 704 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 705 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 706 return 1; 707 708 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 709 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 710 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 711 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 712 } else if (has_hf_indicators_feature(hfp_connection)){ 713 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 714 } else { 715 hfp_ag_slc_established(hfp_connection); 716 } 717 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 718 return 1; 719 720 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 721 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 722 if (has_hf_indicators_feature(hfp_connection)){ 723 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 724 } 725 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 726 if (!has_hf_indicators_feature(hfp_connection)){ 727 hfp_ag_slc_established(hfp_connection); 728 } 729 return 1; 730 731 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 732 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 733 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 734 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 735 return 1; 736 737 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 738 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 739 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 740 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 741 return 1; 742 743 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 744 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 745 hfp_ag_slc_established(hfp_connection); 746 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 747 return 1; 748 default: 749 break; 750 } 751 752 switch (hfp_connection->state){ 753 case HFP_RETRIEVE_INDICATORS: { 754 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 755 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 756 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 757 if (next_segment < num_segments){ 758 // prepare sending of next segment 759 hfp_connection->send_ag_indicators_segment = next_segment; 760 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 761 } else { 762 // done, go to next state 763 hfp_connection->send_ag_indicators_segment = 0; 764 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 765 } 766 return 1; 767 } 768 default: 769 break; 770 } 771 return 0; 772 } 773 774 static bool hfp_ag_voice_recognition_supported(hfp_connection_t * hfp_connection, bool enhanced){ 775 uint8_t ag_vra_flag = HFP_AGSF_VOICE_RECOGNITION_FUNCTION; 776 uint8_t hf_vra_flag = HFP_HFSF_VOICE_RECOGNITION_FUNCTION; 777 778 if (enhanced){ 779 ag_vra_flag = HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS; 780 hf_vra_flag = HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS; 781 } 782 783 int ag = get_bit(hfp_ag_supported_features, ag_vra_flag); 784 int hf = get_bit(hfp_connection->remote_supported_features, hf_vra_flag); 785 return hf && ag; 786 } 787 788 static uint8_t hfp_ag_can_activate_voice_recognition(hfp_connection_t * hfp_connection, bool enhanced){ 789 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 790 return ERROR_CODE_COMMAND_DISALLOWED; 791 } 792 if (!hfp_ag_voice_recognition_supported(hfp_connection, enhanced)){ 793 return ERROR_CODE_COMMAND_DISALLOWED; 794 } 795 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_OFF){ 796 return ERROR_CODE_COMMAND_DISALLOWED; 797 } 798 return ERROR_CODE_SUCCESS; 799 } 800 801 static uint8_t hfp_ag_voice_recognition_session_active(hfp_connection_t * hfp_connection, bool enhanced){ 802 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 803 return ERROR_CODE_COMMAND_DISALLOWED; 804 } 805 if (!hfp_ag_voice_recognition_supported(hfp_connection, enhanced)){ 806 return ERROR_CODE_COMMAND_DISALLOWED; 807 } 808 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 809 if (hfp_connection->vra_state == HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO){ 810 return ERROR_CODE_SUCCESS; 811 } 812 return ERROR_CODE_COMMAND_DISALLOWED; 813 } 814 return ERROR_CODE_SUCCESS; 815 } 816 817 static bool hfp_ag_can_send_enahnced_voice_recognition_message(hfp_connection_t * hfp_connection, bool enhanced){ 818 if (hfp_ag_voice_recognition_session_active(hfp_connection, enhanced) == ERROR_CODE_SUCCESS){ 819 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_VOICE_RECOGNITION_TEXT); 820 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_TEXT); 821 return hf && ag; 822 } 823 return false; 824 } 825 826 static bool hfp_ag_is_audio_connection_active(hfp_connection_t * hfp_connection){ 827 switch (hfp_connection->state){ 828 case HFP_W2_CONNECT_SCO: 829 case HFP_W4_SCO_CONNECTED: 830 case HFP_AUDIO_CONNECTION_ESTABLISHED: 831 return true; 832 default: 833 return false; 834 } 835 } 836 837 static void hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection_t * hfp_connection, uint8_t status){ 838 hci_con_handle_t acl_handle = (hfp_connection != NULL) ? hfp_connection->acl_handle : HCI_CON_HANDLE_INVALID; 839 840 uint8_t event[6]; 841 event[0] = HCI_EVENT_HFP_META; 842 event[1] = sizeof(event) - 2; 843 event[2] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE_SENT; 844 little_endian_store_16(event, 3, acl_handle); 845 event[5] = status; 846 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 847 } 848 849 850 static void hfp_ag_emit_hf_indicator_value(hfp_connection_t * hfp_connection, uint16_t uuid, uint8_t value){ 851 hci_con_handle_t acl_handle = (hfp_connection != NULL) ? hfp_connection->acl_handle : HCI_CON_HANDLE_INVALID; 852 853 uint8_t event[8]; 854 event[0] = HCI_EVENT_HFP_META; 855 event[1] = sizeof(event) - 2; 856 event[2] = HFP_SUBEVENT_HF_INDICATOR; 857 little_endian_store_16(event, 3, acl_handle); 858 little_endian_store_16(event, 5, uuid); 859 event[7] = value; 860 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 861 } 862 863 static void hfp_ag_emit_general_simple_event(uint8_t event_subtype){ 864 if (!hfp_ag_callback) return; 865 866 uint8_t event[5]; 867 event[0] = HCI_EVENT_HFP_META; 868 event[1] = sizeof(event) - 2; 869 event[2] = event_subtype; 870 little_endian_store_16(event, 3, HCI_CON_HANDLE_INVALID); 871 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 872 } 873 874 static int hfp_ag_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 875 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 876 return 0; 877 } 878 int done = 0; 879 uint8_t status; 880 881 switch (hfp_connection->command){ 882 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 883 switch (hfp_connection->vra_state_requested){ 884 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_MSG: 885 done = hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection); 886 if (done == 0){ 887 hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 888 } else { 889 hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection, ERROR_CODE_SUCCESS); 890 } 891 hfp_connection->vra_state_requested = hfp_connection->vra_state; 892 return done; 893 894 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_STATUS: 895 done = hfp_ag_send_enhanced_voice_recognition_state_cmd(hfp_connection); 896 if (done == 0){ 897 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 898 } else { 899 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 900 } 901 hfp_connection->vra_state_requested = hfp_connection->vra_state; 902 return done; 903 904 default: 905 done = hfp_ag_send_voice_recognition_cmd(hfp_connection, hfp_connection->ag_activate_voice_recognition_value); 906 if (done == 0){ 907 hfp_connection->vra_state_requested = hfp_connection->vra_state; 908 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_COMMAND_DISALLOWED); 909 return 0; 910 } 911 break; 912 } 913 break; 914 915 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 916 // HF initiatied voice recognition, parser extracted activation value 917 switch (hfp_connection->ag_activate_voice_recognition_value){ 918 case 0: 919 if (hfp_ag_voice_recognition_session_active(hfp_connection, hfp_connection->enhanced_voice_recognition_enabled) == ERROR_CODE_SUCCESS){ 920 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 921 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 922 } 923 break; 924 925 case 1: 926 if (hfp_ag_can_activate_voice_recognition(hfp_connection, hfp_connection->enhanced_voice_recognition_enabled) == ERROR_CODE_SUCCESS){ 927 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 928 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 929 } 930 break; 931 932 case 2: 933 if (hfp_ag_voice_recognition_session_active(hfp_connection, hfp_connection->enhanced_voice_recognition_enabled) == ERROR_CODE_SUCCESS){ 934 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 935 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 936 } 937 break; 938 default: 939 break; 940 } 941 if (done == 0){ 942 hfp_connection->vra_state_requested = hfp_connection->vra_state; 943 done = hfp_ag_send_error(hfp_connection->rfcomm_cid); 944 return 1; 945 } 946 break; 947 948 default: 949 return 0; 950 } 951 952 switch (hfp_connection->vra_state_requested){ 953 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 954 if (!hfp_ag_is_audio_connection_active(hfp_connection)){ 955 status = hfp_ag_setup_audio_connection(hfp_connection); 956 if (status != ERROR_CODE_SUCCESS){ 957 hfp_connection->vra_state_requested = hfp_connection->vra_state; 958 hfp_emit_voice_recognition_state_event(hfp_connection, status); 959 return 0; 960 } 961 } 962 hfp_connection->enhanced_voice_recognition_enabled = true; 963 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 964 hfp_connection->vra_state_requested = hfp_connection->vra_state; 965 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 966 break; 967 968 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 969 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 970 hfp_connection->vra_state_requested = hfp_connection->vra_state; 971 972 // release audio connection only if it was opened after audio VR activated 973 if (hfp_ag_is_audio_connection_active(hfp_connection) && !hfp_connection->ag_audio_connection_opened_before_vra){ 974 hfp_trigger_release_audio_connection(hfp_connection); 975 } 976 977 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 978 break; 979 980 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 981 // open only if audio connection does not already exist 982 if (!hfp_ag_is_audio_connection_active(hfp_connection)){ 983 status = hfp_ag_setup_audio_connection(hfp_connection); 984 if (status != ERROR_CODE_SUCCESS){ 985 hfp_connection->vra_state_requested = hfp_connection->vra_state; 986 hfp_emit_voice_recognition_state_event(hfp_connection, status); 987 return 0; 988 } 989 } 990 991 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 992 hfp_connection->vra_state_requested = hfp_connection->vra_state; 993 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 994 break; 995 996 default: 997 break; 998 } 999 return done; 1000 } 1001 1002 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 1003 int sent = codecs_exchange_state_machine(hfp_connection); 1004 if (sent) return 1; 1005 1006 switch(hfp_connection->command){ 1007 1008 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1009 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 1010 return 1; 1011 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 1012 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 1013 return 1; 1014 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 1015 if (hfp_connection->network_operator.format != 0){ 1016 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1017 } else { 1018 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1019 } 1020 return 1; 1021 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 1022 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1023 return 1; 1024 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 1025 if (hfp_connection->extended_audio_gateway_error){ 1026 hfp_connection->extended_audio_gateway_error = 0; 1027 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 1028 return 1; 1029 } 1030 break; 1031 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 1032 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1033 return 1; 1034 default: 1035 break; 1036 } 1037 return 0; 1038 } 1039 1040 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 1041 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 1042 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 1043 1044 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1045 1046 if (hfp_connection->release_audio_connection){ 1047 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 1048 hfp_connection->release_audio_connection = 0; 1049 gap_disconnect(hfp_connection->sco_handle); 1050 return 1; 1051 } 1052 1053 // accept incoming audio connection (codec negotiation is not used) 1054 if (hfp_connection->accept_sco){ 1055 // notify about codec selection if not done already 1056 if (hfp_connection->negotiated_codec == 0){ 1057 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 1058 } 1059 // 1060 bool incoming_eSCO = hfp_connection->accept_sco == 2; 1061 hfp_connection->accept_sco = 0; 1062 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1063 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 1064 return 1; 1065 } 1066 1067 // run codecs exchange 1068 int sent = codecs_exchange_state_machine(hfp_connection); 1069 if (sent) return 1; 1070 1071 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 1072 if (hfp_connection->establish_audio_connection){ 1073 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1074 hfp_connection->establish_audio_connection = 0; 1075 hfp_setup_synchronous_connection(hfp_connection); 1076 return 1; 1077 } 1078 return 0; 1079 } 1080 1081 static void hfp_ag_set_callsetup_indicator(void){ 1082 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1083 if (!indicator){ 1084 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1085 return; 1086 }; 1087 indicator->status = hfp_gsm_callsetup_status(); 1088 } 1089 1090 static void hfp_ag_set_callheld_indicator(void){ 1091 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1092 if (!indicator){ 1093 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1094 return; 1095 }; 1096 indicator->status = hfp_gsm_callheld_status(); 1097 } 1098 1099 // 1100 // transition implementations for hfp_ag_call_state_machine 1101 // 1102 1103 static void hfp_ag_hf_start_ringing_incoming(hfp_connection_t * hfp_connection){ 1104 if (use_in_band_tone()){ 1105 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 1106 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1107 } else { 1108 hfp_connection->call_state = HFP_CALL_INCOMING_RINGING; 1109 } 1110 } 1111 1112 static void hfp_ag_hf_start_ringing_outgoing(hfp_connection_t * hfp_connection){ 1113 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1114 } 1115 1116 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 1117 hfp_connection->ag_ring = 0; 1118 hfp_connection->ag_send_clip = 0; 1119 } 1120 1121 1122 static void hfp_ag_trigger_incoming_call_during_active_one(void){ 1123 btstack_linked_list_iterator_t it; 1124 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1125 while (btstack_linked_list_iterator_has_next(&it)){ 1126 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1127 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1128 if (hfp_connection->call_state != HFP_CALL_ACTIVE) continue; 1129 1130 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 1131 hfp_ag_run_for_context(hfp_connection); 1132 } 1133 } 1134 1135 // trigger RING and CLIP messages on connections that are ringing 1136 static void hfp_ag_ring_timeout_handler(btstack_timer_source_t * timer){ 1137 btstack_linked_list_iterator_t it; 1138 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1139 while (btstack_linked_list_iterator_has_next(&it)){ 1140 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1141 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1142 switch (hfp_connection->call_state){ 1143 case HFP_CALL_INCOMING_RINGING: 1144 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1145 case HFP_CALL_OUTGOING_RINGING: 1146 // Queue RING on this connection 1147 hfp_connection->ag_ring = 1; 1148 1149 // HFP v1.8, 4.23 Calling Line Identification (CLI) Notification 1150 // "If the calling subscriber number information is available from the network, the AG shall issue the 1151 // +CLIP unsolicited result code just after every RING indication when the HF is alerted in an incoming call." 1152 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1153 1154 // trigger next message 1155 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1156 break; 1157 default: 1158 break; 1159 } 1160 } 1161 1162 btstack_run_loop_set_timer(timer, 2000); // 2 seconds timeout 1163 btstack_run_loop_add_timer(timer); 1164 } 1165 1166 static void hfp_ag_ring_timeout_start(void){ 1167 btstack_run_loop_remove_timer(&hfp_ag_ring_timeout); 1168 btstack_run_loop_set_timer_handler(&hfp_ag_ring_timeout, hfp_ag_ring_timeout_handler); 1169 hfp_ag_ring_timeout_handler(&hfp_ag_ring_timeout); 1170 } 1171 1172 static void hfp_ag_ring_timeout_stop(void){ 1173 btstack_run_loop_remove_timer(&hfp_ag_ring_timeout); 1174 } 1175 1176 static void hfp_ag_start_ringing(void){ 1177 hfp_ag_ring_timeout_start(); 1178 hfp_ag_emit_general_simple_event(HFP_SUBEVENT_START_RINGING); 1179 } 1180 1181 static void hfp_ag_stop_ringing(void){ 1182 hfp_ag_ring_timeout_stop(); 1183 hfp_ag_emit_general_simple_event(HFP_SUBEVENT_STOP_RINGING); 1184 1185 btstack_linked_list_iterator_t it; 1186 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1187 while (btstack_linked_list_iterator_has_next(&it)){ 1188 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1189 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1190 if ((hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) && 1191 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1192 hfp_ag_hf_stop_ringing(hfp_connection); 1193 } 1194 } 1195 1196 static void hfp_ag_trigger_incoming_call_idle(void){ 1197 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 1198 if (indicator_index < 0) return; 1199 1200 // update callsetup state in connections 1201 btstack_linked_list_iterator_t it; 1202 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1203 while (btstack_linked_list_iterator_has_next(&it)){ 1204 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1205 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1206 if (hfp_connection->call_state != HFP_CALL_IDLE) continue; 1207 1208 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1209 1210 hfp_ag_hf_start_ringing_incoming(hfp_connection); 1211 1212 hfp_ag_run_for_context(hfp_connection); 1213 } 1214 1215 // start local ringing - started after connection state has been updated 1216 hfp_ag_start_ringing(); 1217 } 1218 1219 static void hfp_ag_trigger_outgoing_call(void){ 1220 btstack_linked_list_iterator_t it; 1221 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1222 while (btstack_linked_list_iterator_has_next(&it)){ 1223 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1224 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1225 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1226 if (hfp_connection->call_state == HFP_CALL_IDLE){ 1227 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1228 } 1229 } 1230 } 1231 1232 static void hfp_ag_handle_outgoing_call_accepted(hfp_connection_t * hfp_connection){ 1233 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1234 1235 // trigger callsetup to be 1236 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1237 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1238 1239 int indicator_index ; 1240 1241 hfp_ag_set_callsetup_indicator(); 1242 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1243 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1244 1245 // put current call on hold if active 1246 if (put_call_on_hold){ 1247 log_info("AG putting current call on hold for new outgoing call"); 1248 hfp_ag_set_callheld_indicator(); 1249 indicator_index = get_ag_indicator_index_for_name("callheld"); 1250 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1251 } 1252 1253 // start audio if needed 1254 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1255 } 1256 1257 static void hfp_ag_transfer_indicator(const char * name){ 1258 int indicator_index = get_ag_indicator_index_for_name(name); 1259 if (indicator_index < 0) return; 1260 1261 btstack_linked_list_iterator_t it; 1262 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1263 while (btstack_linked_list_iterator_has_next(&it)){ 1264 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1265 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1266 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1267 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1268 hfp_ag_run_for_context(hfp_connection); 1269 } 1270 } 1271 1272 static void hfp_ag_transfer_callsetup_state(void){ 1273 hfp_ag_transfer_indicator("callsetup"); 1274 } 1275 1276 static void hfp_ag_transfer_call_state(void){ 1277 hfp_ag_transfer_indicator("call"); 1278 } 1279 1280 static void hfp_ag_transfer_callheld_state(void){ 1281 hfp_ag_transfer_indicator("callheld"); 1282 } 1283 1284 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 1285 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1286 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1287 1288 hfp_ag_stop_ringing(); 1289 1290 btstack_linked_list_iterator_t it; 1291 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1292 while (btstack_linked_list_iterator_has_next(&it)){ 1293 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1294 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1295 if ((hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) && 1296 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1297 1298 if (hfp_connection == source){ 1299 1300 if (use_in_band_tone()){ 1301 hfp_connection->call_state = HFP_CALL_ACTIVE; 1302 } else { 1303 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 1304 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1305 } 1306 1307 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1308 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1309 1310 } else { 1311 hfp_connection->call_state = HFP_CALL_IDLE; 1312 } 1313 hfp_ag_run_for_context(hfp_connection); 1314 } 1315 } 1316 1317 static void hfp_ag_ag_accept_call(void){ 1318 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1319 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1320 1321 hfp_ag_stop_ringing(); 1322 1323 btstack_linked_list_iterator_t it; 1324 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1325 while (btstack_linked_list_iterator_has_next(&it)){ 1326 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1327 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1328 if (hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) continue; 1329 1330 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1331 1332 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1333 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1334 1335 hfp_ag_run_for_context(hfp_connection); 1336 break; // only single 1337 } 1338 } 1339 1340 static void hfp_ag_trigger_reject_call(void){ 1341 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1342 1343 hfp_ag_stop_ringing(); 1344 1345 btstack_linked_list_iterator_t it; 1346 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1347 while (btstack_linked_list_iterator_has_next(&it)){ 1348 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1349 if (connection->local_role != HFP_ROLE_AG) continue; 1350 if ((connection->call_state != HFP_CALL_INCOMING_RINGING) && 1351 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1352 1353 connection->call_state = HFP_CALL_IDLE; 1354 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1355 1356 if (connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1357 connection->release_audio_connection = 1; 1358 } 1359 hfp_emit_simple_event(connection, HFP_SUBEVENT_CALL_TERMINATED); 1360 hfp_ag_run_for_context(connection); 1361 rfcomm_request_can_send_now_event(connection->rfcomm_cid); 1362 } 1363 } 1364 1365 static void hfp_ag_trigger_terminate_call(void){ 1366 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1367 1368 // no ringing during call 1369 1370 btstack_linked_list_iterator_t it; 1371 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1372 while (btstack_linked_list_iterator_has_next(&it)){ 1373 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1374 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1375 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1376 1377 hfp_connection->call_state = HFP_CALL_IDLE; 1378 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1379 1380 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1381 hfp_connection->release_audio_connection = 1; 1382 } 1383 1384 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1385 hfp_ag_run_for_context(hfp_connection); 1386 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1387 } 1388 } 1389 1390 static void hfp_ag_set_call_indicator(void){ 1391 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1392 if (!indicator){ 1393 log_error("hfp_ag_set_call_state: call indicator is missing"); 1394 return; 1395 }; 1396 indicator->status = hfp_gsm_call_status(); 1397 } 1398 1399 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1400 btstack_linked_list_iterator_t it; 1401 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1402 while (btstack_linked_list_iterator_has_next(&it)){ 1403 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1404 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1405 if (hfp_connection->call_state == call_state) return hfp_connection; 1406 } 1407 return NULL; 1408 } 1409 1410 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1411 btstack_linked_list_iterator_t it; 1412 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1413 while (btstack_linked_list_iterator_has_next(&it)){ 1414 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1415 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1416 hfp_connection->send_response_and_hold_status = state + 1; 1417 } 1418 } 1419 1420 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1421 int indicator_index; 1422 switch (hfp_connection->call_state){ 1423 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1424 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1425 1426 // we got event: audio hfp_connection established 1427 hfp_connection->call_state = HFP_CALL_INCOMING_RINGING; 1428 break; 1429 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1430 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1431 // we got event: audio hfp_connection established 1432 hfp_connection->call_state = HFP_CALL_ACTIVE; 1433 break; 1434 case HFP_CALL_W2_SEND_CALL_WAITING: 1435 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1436 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1437 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1438 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1439 break; 1440 default: 1441 break; 1442 } 1443 return 0; 1444 } 1445 1446 // functions extracted from hfp_ag_call_sm below 1447 static void hfp_ag_handle_reject_outgoing_call(void){ 1448 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1449 if (!hfp_connection){ 1450 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1451 return; 1452 } 1453 1454 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1455 hfp_connection->call_state = HFP_CALL_IDLE; 1456 hfp_connection->send_error = 1; 1457 hfp_ag_run_for_context(hfp_connection); 1458 } 1459 1460 // hfp_connection is used to identify originating HF 1461 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1462 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1463 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1464 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1465 1466 switch (event){ 1467 case HFP_AG_INCOMING_CALL: 1468 switch (hfp_gsm_call_status()){ 1469 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1470 switch (hfp_gsm_callsetup_status()){ 1471 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1472 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1473 hfp_ag_set_callsetup_indicator(); 1474 hfp_ag_trigger_incoming_call_idle(); 1475 log_info("AG rings"); 1476 break; 1477 default: 1478 break; 1479 } 1480 break; 1481 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1482 switch (hfp_gsm_callsetup_status()){ 1483 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1484 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1485 hfp_ag_set_callsetup_indicator(); 1486 hfp_ag_trigger_incoming_call_during_active_one(); 1487 log_info("AG call waiting"); 1488 break; 1489 default: 1490 break; 1491 } 1492 break; 1493 default: 1494 break; 1495 } 1496 break; 1497 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1498 switch (hfp_gsm_call_status()){ 1499 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1500 switch (hfp_gsm_callsetup_status()){ 1501 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1502 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1503 hfp_ag_set_call_indicator(); 1504 hfp_ag_set_callsetup_indicator(); 1505 hfp_ag_ag_accept_call(); 1506 log_info("AG answers call, accept call by GSM"); 1507 break; 1508 default: 1509 break; 1510 } 1511 break; 1512 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1513 switch (hfp_gsm_callsetup_status()){ 1514 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1515 log_info("AG: current call is placed on hold, incoming call gets active"); 1516 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1517 hfp_ag_set_callsetup_indicator(); 1518 hfp_ag_set_callheld_indicator(); 1519 hfp_ag_transfer_callsetup_state(); 1520 hfp_ag_transfer_callheld_state(); 1521 break; 1522 default: 1523 break; 1524 } 1525 break; 1526 default: 1527 break; 1528 } 1529 break; 1530 1531 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1532 switch (hfp_gsm_call_status()){ 1533 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1534 switch (hfp_gsm_callheld_status()){ 1535 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1536 log_info("AG: joining held call with active call"); 1537 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1538 hfp_ag_set_callheld_indicator(); 1539 hfp_ag_transfer_callheld_state(); 1540 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1541 break; 1542 default: 1543 break; 1544 } 1545 break; 1546 default: 1547 break; 1548 } 1549 break; 1550 1551 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1552 switch (hfp_gsm_call_status()){ 1553 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1554 switch (hfp_gsm_callsetup_status()){ 1555 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1556 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1557 hfp_ag_set_callsetup_indicator(); 1558 hfp_ag_set_call_indicator(); 1559 hfp_ag_hf_accept_call(hfp_connection); 1560 hfp_connection->ok_pending = 1; 1561 log_info("HF answers call, accept call by GSM"); 1562 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1563 break; 1564 default: 1565 break; 1566 } 1567 break; 1568 default: 1569 break; 1570 } 1571 break; 1572 1573 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1574 switch (hfp_gsm_call_status()){ 1575 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1576 switch (hfp_gsm_callsetup_status()){ 1577 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1578 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1579 hfp_ag_response_and_hold_active = 1; 1580 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1581 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1582 // as with regular call 1583 hfp_ag_set_call_indicator(); 1584 hfp_ag_set_callsetup_indicator(); 1585 hfp_ag_ag_accept_call(); 1586 log_info("AG response and hold - hold by AG"); 1587 break; 1588 default: 1589 break; 1590 } 1591 break; 1592 default: 1593 break; 1594 } 1595 break; 1596 1597 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1598 switch (hfp_gsm_call_status()){ 1599 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1600 switch (hfp_gsm_callsetup_status()){ 1601 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1602 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1603 hfp_ag_response_and_hold_active = 1; 1604 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1605 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1606 // as with regular call 1607 hfp_ag_set_call_indicator(); 1608 hfp_ag_set_callsetup_indicator(); 1609 hfp_ag_hf_accept_call(hfp_connection); 1610 log_info("AG response and hold - hold by HF"); 1611 break; 1612 default: 1613 break; 1614 } 1615 break; 1616 default: 1617 break; 1618 } 1619 break; 1620 1621 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1622 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1623 if (!hfp_ag_response_and_hold_active) break; 1624 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1625 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1626 hfp_ag_response_and_hold_active = 0; 1627 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1628 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1629 log_info("Held Call accepted and active"); 1630 break; 1631 1632 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1633 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1634 if (!hfp_ag_response_and_hold_active) break; 1635 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1636 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1637 hfp_ag_response_and_hold_active = 0; 1638 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1639 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1640 // from terminate by ag 1641 hfp_ag_set_call_indicator(); 1642 hfp_ag_trigger_terminate_call(); 1643 break; 1644 1645 case HFP_AG_TERMINATE_CALL_BY_HF: 1646 switch (hfp_gsm_call_status()){ 1647 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1648 switch (hfp_gsm_callsetup_status()){ 1649 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1650 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1651 hfp_ag_set_callsetup_indicator(); 1652 hfp_ag_transfer_callsetup_state(); 1653 hfp_ag_trigger_reject_call(); 1654 log_info("HF Rejected Incoming call, AG terminate call"); 1655 break; 1656 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1657 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1658 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1659 hfp_ag_set_callsetup_indicator(); 1660 hfp_ag_transfer_callsetup_state(); 1661 log_info("AG terminate outgoing call process"); 1662 break; 1663 default: 1664 break; 1665 } 1666 break; 1667 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1668 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1669 hfp_ag_set_callsetup_indicator(); 1670 hfp_ag_set_call_indicator(); 1671 hfp_ag_trigger_terminate_call(); 1672 log_info("AG terminate call"); 1673 break; 1674 default: 1675 break; 1676 } 1677 break; 1678 1679 case HFP_AG_TERMINATE_CALL_BY_AG: 1680 switch (hfp_gsm_call_status()){ 1681 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1682 switch (hfp_gsm_callsetup_status()){ 1683 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1684 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1685 hfp_ag_set_callsetup_indicator(); 1686 hfp_ag_trigger_reject_call(); 1687 log_info("AG Rejected Incoming call, AG terminate call"); 1688 break; 1689 default: 1690 break; 1691 } 1692 break; 1693 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1694 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1695 hfp_ag_set_callsetup_indicator(); 1696 hfp_ag_set_call_indicator(); 1697 hfp_ag_trigger_terminate_call(); 1698 log_info("AG terminate call"); 1699 break; 1700 default: 1701 break; 1702 } 1703 break; 1704 case HFP_AG_CALL_DROPPED: 1705 switch (hfp_gsm_call_status()){ 1706 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1707 switch (hfp_gsm_callsetup_status()){ 1708 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1709 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1710 hfp_ag_stop_ringing(); 1711 break; 1712 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1713 log_info("Outgoing call interrupted\n"); 1714 break; 1715 default: 1716 break; 1717 } 1718 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1719 hfp_ag_set_callsetup_indicator(); 1720 hfp_ag_transfer_callsetup_state(); 1721 hfp_ag_trigger_terminate_call(); 1722 break; 1723 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1724 if (hfp_ag_response_and_hold_active) { 1725 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1726 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1727 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1728 } 1729 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1730 hfp_ag_set_callsetup_indicator(); 1731 hfp_ag_set_call_indicator(); 1732 hfp_ag_trigger_terminate_call(); 1733 log_info("AG notify call dropped"); 1734 break; 1735 default: 1736 break; 1737 } 1738 break; 1739 1740 case HFP_AG_OUTGOING_CALL_INITIATED_BY_HF: 1741 // directly reject call if number of free slots is exceeded 1742 if (!hfp_gsm_call_possible()){ 1743 hfp_connection->send_error = 1; 1744 hfp_ag_run_for_context(hfp_connection); 1745 break; 1746 } 1747 1748 // note: number not used currently 1749 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1750 1751 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1752 1753 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1754 break; 1755 1756 case HFP_AG_OUTGOING_CALL_INITIATED_BY_AG: 1757 // directly reject call if number of free slots is exceeded 1758 if (!hfp_gsm_call_possible()) { 1759 // TODO: no error for user 1760 break; 1761 } 1762 switch (hfp_gsm_call_status()) { 1763 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1764 switch (hfp_gsm_callsetup_status()) { 1765 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1766 // note: number not used currently 1767 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, 0, 0, "1234567"); 1768 // init call state for all connections 1769 hfp_ag_trigger_outgoing_call(); 1770 // get first one and accept call 1771 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1772 if (hfp_connection) { 1773 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1774 } 1775 break; 1776 default: 1777 // TODO: no error for user 1778 break; 1779 } 1780 break; 1781 default: 1782 // TODO: no error for user 1783 break; 1784 } 1785 break; 1786 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1787 // directly reject call if number of free slots is exceeded 1788 if (!hfp_gsm_call_possible()){ 1789 hfp_connection->send_error = 1; 1790 hfp_ag_run_for_context(hfp_connection); 1791 break; 1792 } 1793 1794 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1795 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1796 1797 log_info("Redial last number"); 1798 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1799 1800 if (strlen(last_dialed_number) > 0){ 1801 log_info("Last number exists: accept call"); 1802 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1803 } else { 1804 log_info("log_infoLast number missing: reject call"); 1805 hfp_ag_handle_reject_outgoing_call(); 1806 } 1807 break; 1808 } 1809 case HFP_AG_OUTGOING_CALL_REJECTED: 1810 hfp_ag_handle_reject_outgoing_call(); 1811 break; 1812 1813 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1814 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1815 if (!hfp_connection){ 1816 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1817 break; 1818 } 1819 1820 hfp_connection->ok_pending = 1; 1821 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1822 break; 1823 } 1824 case HFP_AG_OUTGOING_CALL_RINGING: 1825 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1826 if (!hfp_connection){ 1827 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1828 break; 1829 } 1830 1831 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1832 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1833 hfp_ag_set_callsetup_indicator(); 1834 hfp_ag_transfer_callsetup_state(); 1835 hfp_ag_hf_start_ringing_outgoing(hfp_connection); 1836 break; 1837 1838 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1839 // get outgoing call 1840 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1841 if (!hfp_connection){ 1842 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1843 } 1844 if (!hfp_connection){ 1845 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1846 break; 1847 } 1848 1849 bool callheld_status_call_on_hold_and_no_active_calls = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1850 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1851 hfp_connection->call_state = HFP_CALL_ACTIVE; 1852 hfp_ag_set_callsetup_indicator(); 1853 hfp_ag_set_call_indicator(); 1854 hfp_ag_transfer_call_state(); 1855 hfp_ag_transfer_callsetup_state(); 1856 if (callheld_status_call_on_hold_and_no_active_calls){ 1857 hfp_ag_set_callheld_indicator(); 1858 hfp_ag_transfer_callheld_state(); 1859 } 1860 hfp_ag_hf_stop_ringing(hfp_connection); 1861 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1862 break; 1863 } 1864 1865 case HFP_AG_CALL_HOLD_USER_BUSY: 1866 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1867 hfp_ag_set_callsetup_indicator(); 1868 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1869 hfp_connection->call_state = HFP_CALL_ACTIVE; 1870 log_info("AG: Call Waiting, User Busy"); 1871 break; 1872 1873 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1874 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1875 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1876 1877 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1878 if (call_held || call_setup_in_progress){ 1879 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1880 0, NULL); 1881 1882 } 1883 1884 if (call_setup_in_progress){ 1885 log_info("AG: Call Dropped, Accept new call"); 1886 hfp_ag_set_callsetup_indicator(); 1887 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1888 } else { 1889 log_info("AG: Call Dropped, Resume held call"); 1890 } 1891 if (call_held){ 1892 hfp_ag_set_callheld_indicator(); 1893 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1894 } 1895 1896 hfp_connection->call_state = HFP_CALL_ACTIVE; 1897 break; 1898 } 1899 1900 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1901 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1902 // only update if callsetup changed 1903 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1904 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1905 NULL); 1906 1907 if (call_setup_in_progress){ 1908 log_info("AG: Call on Hold, Accept new call"); 1909 hfp_ag_set_callsetup_indicator(); 1910 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1911 } else { 1912 log_info("AG: Swap calls"); 1913 } 1914 1915 hfp_ag_set_callheld_indicator(); 1916 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1917 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1918 hfp_connection->call_state = HFP_CALL_ACTIVE; 1919 break; 1920 } 1921 1922 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1923 // Adds a held call to the conversation. 1924 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1925 log_info("AG: Join 3-way-call"); 1926 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1927 hfp_ag_set_callheld_indicator(); 1928 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1929 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1930 } 1931 hfp_connection->call_state = HFP_CALL_ACTIVE; 1932 break; 1933 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1934 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1935 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1936 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1937 hfp_ag_set_call_indicator(); 1938 hfp_ag_set_callheld_indicator(); 1939 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1940 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1941 hfp_connection->call_state = HFP_CALL_IDLE; 1942 break; 1943 1944 default: 1945 break; 1946 } 1947 1948 1949 } 1950 1951 1952 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1953 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1954 if (!active_call) return; 1955 1956 int idx = active_call->index; 1957 hfp_enhanced_call_dir_t dir = active_call->direction; 1958 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1959 hfp_enhanced_call_mode_t mode = active_call->mode; 1960 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1961 uint8_t type = active_call->clip_type; 1962 char * number = active_call->clip_number; 1963 1964 char buffer[100]; 1965 // TODO: check length of a buffer, to fit the MTU 1966 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1967 if (number){ 1968 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1969 } 1970 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1971 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, 1972 mode, mpty, type, number); 1973 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1974 } 1975 1976 // sends pending command, returns if command was sent 1977 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1978 if (hfp_connection->send_status_of_current_calls){ 1979 hfp_connection->ok_pending = 0; 1980 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1981 hfp_connection->next_call_index++; 1982 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1983 return 1; 1984 } else { 1985 // 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 1986 hfp_connection->next_call_index = 0; 1987 hfp_connection->ok_pending = 1; 1988 hfp_connection->send_status_of_current_calls = 0; 1989 } 1990 } 1991 1992 if (hfp_connection->ag_notify_incoming_call_waiting){ 1993 hfp_connection->ag_notify_incoming_call_waiting = 0; 1994 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1995 return 1; 1996 } 1997 1998 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1999 hfp_connection->ok_pending = 0; 2000 hfp_connection->send_error = 0; 2001 hfp_connection->command = HFP_CMD_NONE; 2002 hfp_ag_send_error(hfp_connection->rfcomm_cid); 2003 return 1; 2004 } 2005 2006 if (hfp_connection->send_error){ 2007 hfp_connection->send_error = 0; 2008 hfp_connection->command = HFP_CMD_NONE; 2009 hfp_ag_send_error(hfp_connection->rfcomm_cid); 2010 return 1; 2011 } 2012 2013 // note: before update AG indicators and ok_pending 2014 if (hfp_connection->send_response_and_hold_status){ 2015 int status = hfp_connection->send_response_and_hold_status - 1; 2016 hfp_connection->send_response_and_hold_status = 0; 2017 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 2018 return 1; 2019 } 2020 2021 if (hfp_connection->ok_pending){ 2022 hfp_connection->ok_pending = 0; 2023 hfp_connection->command = HFP_CMD_NONE; 2024 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2025 return 1; 2026 } 2027 2028 // update AG indicators 2029 if (hfp_connection->ag_indicators_status_update_bitmap){ 2030 int i; 2031 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 2032 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 2033 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 2034 if (!hfp_connection->enable_status_update_for_ag_indicators) { 2035 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 2036 break; 2037 } 2038 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 2039 return 1; 2040 } 2041 } 2042 } 2043 2044 if (hfp_connection->ag_send_no_carrier){ 2045 hfp_connection->ag_send_no_carrier = false; 2046 hfp_ag_send_no_carrier(hfp_connection->rfcomm_cid); 2047 return 1; 2048 } 2049 2050 if (hfp_connection->ag_ring){ 2051 hfp_connection->ag_ring = 0; 2052 hfp_connection->command = HFP_CMD_NONE; 2053 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 2054 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 2055 return 1; 2056 } 2057 2058 if (hfp_connection->ag_send_clip){ 2059 hfp_connection->ag_send_clip = 0; 2060 hfp_connection->command = HFP_CMD_NONE; 2061 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 2062 return 1; 2063 } 2064 2065 if (hfp_connection->send_phone_number_for_voice_tag){ 2066 hfp_connection->send_phone_number_for_voice_tag = 0; 2067 hfp_connection->command = HFP_CMD_NONE; 2068 hfp_connection->ok_pending = 1; 2069 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 2070 return 1; 2071 } 2072 2073 if (hfp_connection->send_subscriber_number){ 2074 if (hfp_connection->next_subscriber_number_to_send < hfp_ag_subscriber_numbers_count){ 2075 hfp_phone_number_t phone = hfp_ag_subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 2076 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 2077 } else { 2078 hfp_connection->send_subscriber_number = 0; 2079 hfp_connection->next_subscriber_number_to_send = 0; 2080 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2081 } 2082 hfp_connection->command = HFP_CMD_NONE; 2083 return 1; 2084 } 2085 2086 if (hfp_connection->send_microphone_gain){ 2087 hfp_connection->send_microphone_gain = 0; 2088 hfp_connection->command = HFP_CMD_NONE; 2089 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 2090 return 1; 2091 } 2092 2093 if (hfp_connection->send_speaker_gain){ 2094 hfp_connection->send_speaker_gain = 0; 2095 hfp_connection->command = HFP_CMD_NONE; 2096 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 2097 return 1; 2098 } 2099 2100 if (hfp_connection->send_ag_status_indicators){ 2101 hfp_connection->send_ag_status_indicators = 0; 2102 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 2103 return 1; 2104 } 2105 2106 return 0; 2107 } 2108 2109 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 2110 2111 btstack_assert(hfp_connection != NULL); 2112 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 2113 2114 // during SDP query, RFCOMM CID is not set 2115 if (hfp_connection->rfcomm_cid == 0) return; 2116 2117 // assert command could be sent 2118 if (hci_can_send_command_packet_now() == 0) return; 2119 2120 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 2121 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 2122 hfp_connection->release_audio_connection = 0; 2123 gap_disconnect(hfp_connection->sco_handle); 2124 return; 2125 } 2126 2127 #ifdef ENABLE_CC256X_ASSISTED_HFP 2128 // WBS Disassociate 2129 if (hfp_connection->cc256x_send_wbs_disassociate){ 2130 hfp_connection->cc256x_send_wbs_disassociate = false; 2131 hci_send_cmd(&hci_ti_wbs_disassociate); 2132 return; 2133 } 2134 // Write Codec Config 2135 if (hfp_connection->cc256x_send_write_codec_config){ 2136 hfp_connection->cc256x_send_write_codec_config = false; 2137 hfp_cc256x_write_codec_config(hfp_connection); 2138 return; 2139 } 2140 // WBS Associate 2141 if (hfp_connection->cc256x_send_wbs_associate){ 2142 hfp_connection->cc256x_send_wbs_associate = false; 2143 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 2144 return; 2145 } 2146 #endif 2147 #ifdef ENABLE_BCM_PCM_WBS 2148 // Enable WBS 2149 if (hfp_connection->bcm_send_enable_wbs){ 2150 hfp_connection->bcm_send_enable_wbs = false; 2151 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 2152 return; 2153 } 2154 // Write I2S/PCM params 2155 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 2156 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 2157 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 2158 return; 2159 } 2160 // Disable WBS 2161 if (hfp_connection->bcm_send_disable_wbs){ 2162 hfp_connection->bcm_send_disable_wbs = false; 2163 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 2164 return; 2165 } 2166 #endif 2167 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 2168 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 2169 hfp_finalize_connection_context(hfp_connection); 2170 return; 2171 } 2172 #endif 2173 2174 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 2175 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 2176 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2177 return; 2178 } 2179 2180 int cmd_sent = hfp_ag_send_commands(hfp_connection); 2181 2182 if (!cmd_sent){ 2183 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 2184 } 2185 2186 if (!cmd_sent){ 2187 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 2188 } 2189 2190 if (!cmd_sent){ 2191 cmd_sent = call_setup_state_machine(hfp_connection); 2192 } 2193 2194 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 2195 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 2196 switch (hfp_connection->codecs_state){ 2197 case HFP_CODECS_IDLE: 2198 case HFP_CODECS_RECEIVED_LIST: 2199 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2200 case HFP_CODECS_ERROR: 2201 hfp_connection->trigger_codec_exchange = 0; 2202 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2203 break; 2204 default: 2205 break; 2206 } 2207 } 2208 2209 if (!cmd_sent){ 2210 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 2211 } 2212 2213 if (!cmd_sent){ 2214 cmd_sent = hfp_ag_voice_recognition_state_machine(hfp_connection); 2215 } 2216 2217 // disconnect 2218 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 2219 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 2220 rfcomm_disconnect(hfp_connection->rfcomm_cid); 2221 } 2222 2223 if (cmd_sent){ 2224 hfp_connection->command = HFP_CMD_NONE; 2225 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2226 } 2227 } 2228 2229 static int hfp_parser_is_end_of_line(uint8_t byte){ 2230 return (byte == '\n') || (byte == '\r'); 2231 } 2232 2233 static void hfp_ag_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 2234 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 2235 if (size < 1) return; 2236 uint8_t status = ERROR_CODE_SUCCESS; 2237 2238 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 2239 #ifdef ENABLE_HFP_AT_MESSAGES 2240 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 2241 #endif 2242 2243 // process messages byte-wise 2244 int pos; 2245 for (pos = 0; pos < size ; pos++){ 2246 hfp_parse(hfp_connection, packet[pos], 0); 2247 2248 // parse until end of line 2249 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 2250 2251 hfp_generic_status_indicator_t * indicator; 2252 switch(hfp_connection->command){ 2253 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 2254 // dealt with in hfp_ag_voice_recognition_state_machine 2255 break; 2256 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 2257 if (hfp_ag_response_and_hold_active){ 2258 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 2259 } 2260 hfp_connection->ok_pending = 1; 2261 break; 2262 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 2263 switch(hfp_connection->ag_response_and_hold_action){ 2264 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 2265 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 2266 break; 2267 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 2268 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 2269 break; 2270 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 2271 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 2272 break; 2273 default: 2274 break; 2275 } 2276 hfp_connection->ok_pending = 1; 2277 break; 2278 case HFP_CMD_HF_INDICATOR_STATUS: 2279 hfp_connection->command = HFP_CMD_NONE; 2280 2281 if (hfp_connection->parser_indicator_index < hfp_ag_generic_status_indicators_nr){ 2282 indicator = &hfp_ag_generic_status_indicators[hfp_connection->parser_indicator_index]; 2283 switch (indicator->uuid){ 2284 case HFP_HF_INDICATOR_UUID_ENHANCED_SAFETY: 2285 if (hfp_connection->parser_indicator_value > 1) { 2286 hfp_connection->send_error = 1; 2287 break; 2288 } 2289 hfp_connection->ok_pending = 1; 2290 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2291 break; 2292 case HFP_HF_INDICATOR_UUID_BATTERY_LEVEL: 2293 if (hfp_connection->parser_indicator_value > 100){ 2294 hfp_connection->send_error = 1; 2295 break; 2296 } 2297 hfp_connection->ok_pending = 1; 2298 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2299 break; 2300 default: 2301 hfp_connection->send_error = 1; 2302 break; 2303 } 2304 } else { 2305 hfp_connection->send_error = 1; 2306 } 2307 break; 2308 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 2309 // expected by SLC state machine 2310 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 2311 hfp_connection->send_ag_indicators_segment = 0; 2312 hfp_connection->send_ag_status_indicators = 1; 2313 break; 2314 case HFP_CMD_LIST_CURRENT_CALLS: 2315 hfp_connection->command = HFP_CMD_NONE; 2316 hfp_connection->next_call_index = 0; 2317 hfp_connection->send_status_of_current_calls = 1; 2318 break; 2319 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 2320 if (hfp_ag_subscriber_numbers_count == 0){ 2321 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2322 break; 2323 } 2324 hfp_connection->next_subscriber_number_to_send = 0; 2325 hfp_connection->send_subscriber_number = 1; 2326 break; 2327 case HFP_CMD_TRANSMIT_DTMF_CODES: 2328 { 2329 hfp_connection->command = HFP_CMD_NONE; 2330 char buffer[2]; 2331 buffer[0] = (char) hfp_connection->ag_dtmf_code; 2332 buffer[1] = 0; 2333 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 2334 break; 2335 } 2336 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 2337 hfp_connection->command = HFP_CMD_NONE; 2338 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 2339 break; 2340 case HFP_CMD_TURN_OFF_EC_AND_NR: 2341 hfp_connection->command = HFP_CMD_NONE; 2342 2343 if (get_bit(hfp_ag_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 2344 hfp_connection->ok_pending = 1; 2345 hfp_ag_supported_features = store_bit(hfp_ag_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 2346 status = ERROR_CODE_SUCCESS; 2347 } else { 2348 hfp_connection->send_error = 1; 2349 status = ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2350 } 2351 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 2352 break; 2353 case HFP_CMD_CALL_ANSWERED: 2354 hfp_connection->command = HFP_CMD_NONE; 2355 log_info("HFP: ATA"); 2356 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 2357 break; 2358 case HFP_CMD_HANG_UP_CALL: 2359 hfp_connection->command = HFP_CMD_NONE; 2360 hfp_connection->ok_pending = 1; 2361 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 2362 break; 2363 case HFP_CMD_CALL_HOLD: { 2364 hfp_connection->command = HFP_CMD_NONE; 2365 hfp_connection->ok_pending = 1; 2366 2367 switch (hfp_connection->ag_call_hold_action){ 2368 case 0: 2369 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2370 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2371 break; 2372 case 1: 2373 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2374 // Where both a held and a waiting call exist, the above procedures shall apply to the 2375 // waiting call (i.e., not to the held call) in conflicting situation. 2376 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2377 break; 2378 case 2: 2379 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2380 // Where both a held and a waiting call exist, the above procedures shall apply to the 2381 // waiting call (i.e., not to the held call) in conflicting situation. 2382 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2383 break; 2384 case 3: 2385 // Adds a held call to the conversation. 2386 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2387 break; 2388 case 4: 2389 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2390 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2391 break; 2392 default: 2393 break; 2394 } 2395 hfp_connection->call_index = 0; 2396 break; 2397 } 2398 case HFP_CMD_CALL_PHONE_NUMBER: 2399 hfp_connection->command = HFP_CMD_NONE; 2400 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, hfp_connection); 2401 break; 2402 case HFP_CMD_REDIAL_LAST_NUMBER: 2403 hfp_connection->command = HFP_CMD_NONE; 2404 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2405 break; 2406 case HFP_CMD_ENABLE_CLIP: 2407 hfp_connection->command = HFP_CMD_NONE; 2408 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2409 hfp_connection->ok_pending = 1; 2410 break; 2411 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2412 hfp_connection->command = HFP_CMD_NONE; 2413 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2414 hfp_connection->ok_pending = 1; 2415 break; 2416 case HFP_CMD_SET_SPEAKER_GAIN: 2417 hfp_connection->command = HFP_CMD_NONE; 2418 hfp_connection->ok_pending = 1; 2419 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2420 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2421 break; 2422 case HFP_CMD_SET_MICROPHONE_GAIN: 2423 hfp_connection->command = HFP_CMD_NONE; 2424 hfp_connection->ok_pending = 1; 2425 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2426 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2427 break; 2428 default: 2429 break; 2430 } 2431 } 2432 } 2433 2434 static void hfp_ag_run(void){ 2435 btstack_linked_list_iterator_t it; 2436 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2437 while (btstack_linked_list_iterator_has_next(&it)){ 2438 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2439 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2440 hfp_ag_run_for_context(hfp_connection); 2441 } 2442 } 2443 2444 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2445 hfp_connection_t * hfp_connection = NULL; 2446 switch (packet_type){ 2447 case RFCOMM_DATA_PACKET: 2448 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 2449 btstack_assert(hfp_connection != NULL); 2450 2451 hfp_ag_handle_rfcomm_data(hfp_connection, packet, size); 2452 hfp_ag_run_for_context(hfp_connection); 2453 return; 2454 case HCI_EVENT_PACKET: 2455 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2456 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2457 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid); 2458 btstack_assert(hfp_connection != NULL); 2459 2460 hfp_ag_run_for_context(hfp_connection); 2461 return; 2462 } 2463 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2464 break; 2465 default: 2466 break; 2467 } 2468 2469 hfp_ag_run(); 2470 } 2471 2472 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2473 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2474 hfp_ag_run(); 2475 } 2476 2477 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2478 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2479 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2480 return; 2481 } 2482 int i; 2483 hfp_ag_codecs_nr = codecs_nr; 2484 for (i=0; i < codecs_nr; i++){ 2485 hfp_ag_codecs[i] = codecs[i]; 2486 } 2487 } 2488 2489 void hfp_ag_init_supported_features(uint32_t supported_features){ 2490 hfp_ag_supported_features = supported_features; 2491 } 2492 2493 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2494 hfp_ag_indicators_nr = ag_indicators_nr; 2495 (void)memcpy(hfp_ag_indicators, ag_indicators, 2496 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2497 } 2498 2499 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2500 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2501 hfp_ag_generic_status_indicators_nr = hf_indicators_nr; 2502 (void)memcpy(hfp_ag_generic_status_indicators, hf_indicators, 2503 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2504 } 2505 2506 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2507 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2508 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2509 call_hold_services_nr * sizeof(char *)); 2510 } 2511 2512 2513 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2514 2515 hfp_init(); 2516 hfp_ag_call_hold_services_nr = 0; 2517 hfp_ag_response_and_hold_active = 0; 2518 hfp_ag_indicators_nr = 0; 2519 hfp_ag_codecs_nr = 0; 2520 hfp_ag_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2521 hfp_ag_subscriber_numbers = NULL; 2522 hfp_ag_subscriber_numbers_count = 0; 2523 2524 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2525 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2526 2527 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2528 2529 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2530 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2531 2532 hfp_gsm_init(); 2533 } 2534 2535 void hfp_ag_deinit(void){ 2536 hfp_deinit(); 2537 hfp_gsm_deinit(); 2538 2539 hfp_ag_callback = NULL; 2540 hfp_ag_supported_features = 0; 2541 hfp_ag_codecs_nr = 0; 2542 hfp_ag_indicators_nr = 0; 2543 hfp_ag_call_hold_services_nr = 0; 2544 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2545 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 2546 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2547 hfp_ag_subscriber_numbers = NULL; 2548 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2549 } 2550 2551 uint8_t hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2552 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2553 } 2554 2555 uint8_t hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2556 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2557 if (!hfp_connection){ 2558 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2559 } 2560 2561 hfp_trigger_release_service_level_connection(hfp_connection); 2562 hfp_ag_run_for_context(hfp_connection); 2563 return ERROR_CODE_SUCCESS; 2564 } 2565 2566 uint8_t hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2567 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2568 if (!hfp_connection){ 2569 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2570 } 2571 2572 hfp_connection->extended_audio_gateway_error = 0; 2573 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2574 return ERROR_CODE_COMMAND_DISALLOWED; 2575 } 2576 2577 hfp_connection->extended_audio_gateway_error = error; 2578 hfp_ag_run_for_context(hfp_connection); 2579 return ERROR_CODE_SUCCESS; 2580 } 2581 2582 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2583 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 2584 return ERROR_CODE_COMMAND_DISALLOWED; 2585 } 2586 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 2587 return ERROR_CODE_COMMAND_DISALLOWED; 2588 } 2589 2590 hfp_connection->establish_audio_connection = 1; 2591 if (!has_codec_negotiation_feature(hfp_connection)){ 2592 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2593 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2594 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2595 // now, pick link settings 2596 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2597 #ifdef ENABLE_CC256X_ASSISTED_HFP 2598 hfp_cc256x_prepare_for_sco(hfp_connection); 2599 #endif 2600 return ERROR_CODE_SUCCESS; 2601 } 2602 2603 uint8_t i; 2604 bool codec_was_in_use = false; 2605 bool better_codec_can_be_used = false; 2606 2607 for (i = 0; i<hfp_connection->remote_codecs_nr; i++){ 2608 if (hfp_connection->negotiated_codec == hfp_connection->remote_codecs[i]){ 2609 codec_was_in_use = true; 2610 } else if (hfp_connection->negotiated_codec < hfp_connection->remote_codecs[i]){ 2611 better_codec_can_be_used = true; 2612 } 2613 } 2614 2615 if (!codec_was_in_use || better_codec_can_be_used){ 2616 hfp_connection->trigger_codec_exchange = 1; 2617 hfp_connection->codecs_state = HFP_CODECS_IDLE; 2618 } 2619 return ERROR_CODE_SUCCESS; 2620 } 2621 2622 uint8_t hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2623 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2624 if (!hfp_connection){ 2625 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2626 } 2627 uint8_t status = hfp_ag_setup_audio_connection(hfp_connection); 2628 if (status != ERROR_CODE_SUCCESS){ 2629 return status; 2630 } 2631 hfp_ag_run_for_context(hfp_connection); 2632 return ERROR_CODE_SUCCESS; 2633 } 2634 2635 uint8_t hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2636 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2637 if (!hfp_connection){ 2638 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2639 } 2640 2641 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 2642 return ERROR_CODE_COMMAND_DISALLOWED; 2643 } 2644 2645 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 2646 if (status == ERROR_CODE_SUCCESS){ 2647 hfp_ag_run_for_context(hfp_connection); 2648 } 2649 return status; 2650 } 2651 2652 /** 2653 * @brief Enable in-band ring tone 2654 */ 2655 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2656 if (get_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2657 return; 2658 } 2659 2660 hfp_ag_supported_features = store_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2661 2662 btstack_linked_list_iterator_t it; 2663 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2664 while (btstack_linked_list_iterator_has_next(&it)){ 2665 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2666 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2667 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2668 hfp_ag_run_for_context(hfp_connection); 2669 } 2670 } 2671 2672 /** 2673 * @brief Called from GSM 2674 */ 2675 void hfp_ag_incoming_call(void){ 2676 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2677 } 2678 2679 void hfp_ag_outgoing_call_initiated(const char * number) { 2680 UNUSED(number); 2681 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, NULL); 2682 } 2683 2684 /** 2685 * @brief number is stored. 2686 */ 2687 void hfp_ag_set_clip(uint8_t type, const char * number){ 2688 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2689 } 2690 2691 void hfp_ag_call_dropped(void){ 2692 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2693 } 2694 2695 // call from AG UI 2696 void hfp_ag_answer_incoming_call(void){ 2697 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2698 } 2699 2700 void hfp_ag_join_held_call(void){ 2701 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2702 } 2703 2704 void hfp_ag_terminate_call(void){ 2705 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2706 } 2707 2708 void hfp_ag_outgoing_call_ringing(void){ 2709 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2710 } 2711 2712 void hfp_ag_outgoing_call_established(void){ 2713 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2714 } 2715 2716 void hfp_ag_outgoing_call_rejected(void){ 2717 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2718 } 2719 2720 void hfp_ag_outgoing_call_accepted(void){ 2721 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2722 } 2723 2724 void hfp_ag_hold_incoming_call(void){ 2725 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2726 } 2727 2728 void hfp_ag_accept_held_incoming_call(void) { 2729 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2730 } 2731 2732 void hfp_ag_reject_held_incoming_call(void){ 2733 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2734 } 2735 2736 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2737 int indicator_index = get_ag_indicator_index_for_name(name); 2738 if (indicator_index < 0) return; 2739 hfp_ag_indicators[indicator_index].status = value; 2740 2741 btstack_linked_list_iterator_t it; 2742 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2743 while (btstack_linked_list_iterator_has_next(&it)){ 2744 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2745 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2746 if (!hfp_connection->ag_indicators[indicator_index].enabled) { 2747 log_info("Requested AG indicator '%s' update to %u, but it is not enabled", hfp_ag_indicators[indicator_index].name, value); 2748 continue; 2749 } 2750 log_info("AG indicator '%s' changed to %u, request transfer status", hfp_ag_indicators[indicator_index].name, value); 2751 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2752 hfp_ag_run_for_context(hfp_connection); 2753 } 2754 } 2755 2756 uint8_t hfp_ag_set_registration_status(int registration_status){ 2757 if ((registration_status < 0) || (registration_status > 1)){ 2758 return ERROR_CODE_COMMAND_DISALLOWED; 2759 } 2760 2761 if ( (registration_status == 0) && (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 2762 2763 // if network goes away wihle a call is active: 2764 // - the call gets dropped 2765 // - we send NO CARRIER 2766 // NOTE: the CALL=0 has to be sent before NO CARRIER 2767 2768 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2769 2770 btstack_linked_list_iterator_t it; 2771 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2772 while (btstack_linked_list_iterator_has_next(&it)){ 2773 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2774 hfp_connection->ag_send_no_carrier = true; 2775 } 2776 } 2777 hfp_ag_set_ag_indicator("service", registration_status); 2778 return ERROR_CODE_SUCCESS; 2779 } 2780 2781 uint8_t hfp_ag_set_signal_strength(int signal_strength){ 2782 if ((signal_strength < 0) || (signal_strength > 5)){ 2783 return ERROR_CODE_COMMAND_DISALLOWED; 2784 } 2785 2786 hfp_ag_set_ag_indicator("signal", signal_strength); 2787 return ERROR_CODE_SUCCESS; 2788 } 2789 2790 uint8_t hfp_ag_set_roaming_status(int roaming_status){ 2791 if ((roaming_status < 0) || (roaming_status > 1)){ 2792 return ERROR_CODE_COMMAND_DISALLOWED; 2793 } 2794 2795 hfp_ag_set_ag_indicator("roam", roaming_status); 2796 return ERROR_CODE_SUCCESS; 2797 } 2798 2799 uint8_t hfp_ag_set_battery_level(int battery_level){ 2800 if ((battery_level < 0) || (battery_level > 5)){ 2801 return ERROR_CODE_COMMAND_DISALLOWED; 2802 } 2803 hfp_ag_set_ag_indicator("battchg", battery_level); 2804 return ERROR_CODE_SUCCESS; 2805 } 2806 2807 static uint8_t activate_voice_recognition(hci_con_handle_t acl_handle, bool enhanced){ 2808 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2809 if (!hfp_connection){ 2810 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2811 } 2812 2813 uint8_t status = hfp_ag_can_activate_voice_recognition(hfp_connection, enhanced); 2814 if (status == ERROR_CODE_SUCCESS){ 2815 hfp_connection->ag_activate_voice_recognition_value = 1; 2816 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 2817 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2818 hfp_connection->enhanced_voice_recognition_enabled = enhanced; 2819 hfp_connection->ag_audio_connection_opened_before_vra = hfp_ag_is_audio_connection_active(hfp_connection); 2820 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2821 hfp_ag_run_for_context(hfp_connection); 2822 } 2823 return status; 2824 } 2825 2826 static uint8_t deactivate_voice_recognition(hci_con_handle_t acl_handle, bool enhanced){ 2827 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2828 if (!hfp_connection){ 2829 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2830 } 2831 uint8_t status = hfp_ag_voice_recognition_session_active(hfp_connection, enhanced); 2832 if (status == ERROR_CODE_SUCCESS){ 2833 hfp_connection->ag_activate_voice_recognition_value = 0; 2834 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2835 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2836 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2837 hfp_ag_run_for_context(hfp_connection); 2838 } 2839 return status; 2840 } 2841 2842 uint8_t hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle){ 2843 return activate_voice_recognition(acl_handle, false); 2844 } 2845 2846 uint8_t hfp_ag_activate_enhanced_voice_recognition(hci_con_handle_t acl_handle){ 2847 return activate_voice_recognition(acl_handle, true); 2848 } 2849 2850 uint8_t hfp_ag_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2851 return deactivate_voice_recognition(acl_handle, false); 2852 } 2853 2854 uint8_t hfp_ag_deactivate_enhanced_voice_recognition(hci_con_handle_t acl_handle){ 2855 return deactivate_voice_recognition(acl_handle, true); 2856 } 2857 2858 static uint8_t hfp_ag_enhanced_voice_recognition_send_state(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state){ 2859 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2860 if (!hfp_connection){ 2861 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2862 } 2863 2864 uint8_t status = hfp_ag_voice_recognition_session_active(hfp_connection, true); 2865 if (status == ERROR_CODE_SUCCESS){ 2866 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2867 hfp_connection->ag_vra_state = state; 2868 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_STATUS; 2869 hfp_ag_run_for_context(hfp_connection); 2870 } 2871 return status; 2872 } 2873 2874 uint8_t hfp_ag_enhanced_voice_recognition_report_sending_audio(hci_con_handle_t acl_handle){ 2875 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_STARTING_SOUND); 2876 } 2877 uint8_t hfp_ag_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 2878 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_READY_TO_ACCEPT_AUDIO_INPUT); 2879 } 2880 uint8_t hfp_ag_enhanced_voice_recognition_report_processing_input(hci_con_handle_t acl_handle){ 2881 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_PROCESSING_AUDIO_INPUT); 2882 } 2883 2884 2885 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){ 2886 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2887 if (!hfp_connection){ 2888 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2889 } 2890 2891 uint8_t status = hfp_ag_can_send_enahnced_voice_recognition_message(hfp_connection, true); 2892 if (status == ERROR_CODE_SUCCESS){ 2893 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2894 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_MSG; 2895 hfp_connection->ag_msg = msg; 2896 hfp_connection->ag_vra_state = state; 2897 hfp_ag_run_for_context(hfp_connection); 2898 } 2899 return status; 2900 } 2901 2902 2903 uint8_t hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2904 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2905 if (!hfp_connection){ 2906 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2907 } 2908 2909 if ((gain < 0) || (gain > 15)){ 2910 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2911 return ERROR_CODE_COMMAND_DISALLOWED; 2912 } 2913 2914 if (hfp_connection->microphone_gain != gain){ 2915 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2916 hfp_connection->microphone_gain = gain; 2917 hfp_connection->send_microphone_gain = 1; 2918 } 2919 hfp_ag_run_for_context(hfp_connection); 2920 return ERROR_CODE_SUCCESS; 2921 } 2922 2923 uint8_t hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2924 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2925 if (!hfp_connection){ 2926 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2927 } 2928 2929 if ((gain < 0) || (gain > 15)){ 2930 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2931 return ERROR_CODE_COMMAND_DISALLOWED; 2932 } 2933 2934 if (hfp_connection->speaker_gain != gain){ 2935 hfp_connection->speaker_gain = gain; 2936 hfp_connection->send_speaker_gain = 1; 2937 } 2938 hfp_ag_run_for_context(hfp_connection); 2939 return ERROR_CODE_SUCCESS; 2940 } 2941 2942 uint8_t hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2943 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2944 if (!hfp_connection){ 2945 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2946 } 2947 2948 hfp_ag_set_clip(0, number); 2949 hfp_connection->send_phone_number_for_voice_tag = 1; 2950 return ERROR_CODE_SUCCESS; 2951 } 2952 2953 uint8_t hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2954 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2955 if (!hfp_connection){ 2956 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2957 } 2958 2959 hfp_connection->send_error = 1; 2960 return ERROR_CODE_SUCCESS; 2961 } 2962 2963 uint8_t hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2964 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2965 if (!hfp_connection){ 2966 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2967 } 2968 2969 hfp_connection->ok_pending = 1; 2970 return ERROR_CODE_SUCCESS; 2971 } 2972 2973 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2974 hfp_ag_subscriber_numbers = numbers; 2975 hfp_ag_subscriber_numbers_count = numbers_count; 2976 } 2977 2978 void hfp_ag_clear_last_dialed_number(void){ 2979 hfp_gsm_clear_last_dialed_number(); 2980 } 2981 2982 void hfp_ag_set_last_dialed_number(const char * number){ 2983 hfp_gsm_set_last_dialed_number(number); 2984 } 2985 2986 uint8_t hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2987 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2988 if (!hfp_connection){ 2989 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2990 } 2991 2992 if (!hfp_connection->call_waiting_notification_enabled){ 2993 return ERROR_CODE_COMMAND_DISALLOWED; 2994 } 2995 2996 hfp_connection->ag_notify_incoming_call_waiting = 1; 2997 hfp_ag_run_for_context(hfp_connection); 2998 return ERROR_CODE_SUCCESS; 2999 } 3000 3001 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){ 3002 if (!name){ 3003 name = hfp_ag_default_service_name; 3004 } 3005 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 3006 3007 /* 3008 * 0x01 – Ability to reject a call 3009 * 0x00 – No ability to reject a call 3010 */ 3011 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 3012 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 3013 3014 // Construct SupportedFeatures for SDP bitmap: 3015 // 3016 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 3017 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 3018 // 3019 // Wide band speech (bit 5) requires Codec negotiation 3020 // 3021 uint16_t sdp_features = supported_features & 0x1f; 3022 if ( (wide_band_speech == 1) && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 3023 sdp_features |= 1 << 5; 3024 } 3025 3026 if (supported_features & (1 << HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 3027 sdp_features |= 1 << 6; 3028 } 3029 3030 if (supported_features & (1 << HFP_AGSF_VOICE_RECOGNITION_TEXT)){ 3031 sdp_features |= 1 << 7; 3032 } 3033 3034 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 3035 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 3036 } 3037 3038 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 3039 btstack_assert(callback != NULL); 3040 3041 hfp_ag_callback = callback; 3042 hfp_set_ag_callback(callback); 3043 } 3044