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 uint8_t evra_enabled = hfp_connection->enhanced_voice_recognition_enabled ? 1 : 0; 523 snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, evra_enabled, hfp_connection->ag_vra_state); 524 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 525 } 526 527 static int hfp_ag_send_voice_recognition_cmd(hfp_connection_t * hfp_connection, uint8_t activate_voice_recognition){ 528 char buffer[30]; 529 if (hfp_connection->enhanced_voice_recognition_enabled){ 530 snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition, hfp_connection->ag_vra_state); 531 } else { 532 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 533 } 534 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 535 } 536 537 static int hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection_t * hfp_connection){ 538 char buffer[HFP_VR_TEXT_HEADER_SIZE + HFP_MAX_VR_TEXT_SIZE]; 539 snprintf(buffer, sizeof(buffer), "\r\n%s: 1,%d,%X,%d,%d,\"%s\"\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, 540 hfp_connection->ag_vra_state, 541 hfp_connection->ag_msg.text_id, 542 hfp_connection->ag_msg.text_type, 543 hfp_connection->ag_msg.text_operation, 544 hfp_connection->ag_msg.text); 545 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 546 } 547 548 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 549 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 550 551 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_ag_codecs_nr, hfp_ag_codecs)){ 552 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 553 return HFP_CODEC_MSBC; 554 } 555 } 556 return HFP_CODEC_CVSD; 557 } 558 559 /* state machines */ 560 561 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 562 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_ag_supported_features & (1 << HFP_AGSF_ESCO_S4)); 563 } 564 565 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 566 /* events ( == commands): 567 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 568 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 569 hf_trigger_codec_connection_setup == received BCC 570 ag_trigger_codec_connection_setup == received from AG to send BCS 571 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 572 */ 573 switch (hfp_connection->codecs_state){ 574 case HFP_CODECS_EXCHANGED: 575 if (hfp_connection->command == HFP_CMD_AVAILABLE_CODECS){ 576 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 577 return 1; 578 } 579 break; 580 581 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 582 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 583 break; 584 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 585 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 586 break; 587 default: 588 break; 589 } 590 591 switch (hfp_connection->command){ 592 case HFP_CMD_AVAILABLE_CODECS: 593 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 594 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 595 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 596 return 1; 597 } 598 599 switch (hfp_connection->codecs_state){ 600 case HFP_CODECS_AG_SENT_COMMON_CODEC: 601 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 602 break; 603 default: 604 break; 605 } 606 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 607 return 1; 608 609 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 610 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 611 hfp_connection->establish_audio_connection = 1; 612 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 613 return 1; 614 615 case HFP_CMD_AG_SEND_COMMON_CODEC: 616 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 617 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 618 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 619 return 1; 620 621 case HFP_CMD_HF_CONFIRMED_CODEC: 622 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 623 hfp_connection->codecs_state = HFP_CODECS_ERROR; 624 hfp_ag_send_error(hfp_connection->rfcomm_cid); 625 return 1; 626 } 627 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 628 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 629 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 630 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 631 // now, pick link settings 632 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 633 #ifdef ENABLE_CC256X_ASSISTED_HFP 634 hfp_cc256x_prepare_for_sco(hfp_connection); 635 #endif 636 return 1; 637 default: 638 break; 639 } 640 return 0; 641 } 642 643 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 644 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 645 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 646 647 // if active call exist, set per-hfp_connection state active, too (when audio is on) 648 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 649 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 650 } 651 // if AG is ringing, also start ringing on the HF 652 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 653 switch (hfp_gsm_callsetup_status()){ 654 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 655 hfp_ag_hf_start_ringing_incoming(hfp_connection); 656 break; 657 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 658 hfp_ag_hf_start_ringing_outgoing(hfp_connection); 659 break; 660 default: 661 break; 662 } 663 } 664 } 665 666 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 667 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 668 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 669 int sent = 0; 670 switch(hfp_connection->command){ 671 case HFP_CMD_SUPPORTED_FEATURES: 672 switch(hfp_connection->state){ 673 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 674 case HFP_EXCHANGE_SUPPORTED_FEATURES: 675 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_ag_codecs, &hfp_ag_codecs_nr); 676 if (has_codec_negotiation_feature(hfp_connection)){ 677 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 678 } else { 679 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 680 } 681 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 682 return 1; 683 default: 684 break; 685 } 686 break; 687 case HFP_CMD_AVAILABLE_CODECS: 688 sent = codecs_exchange_state_machine(hfp_connection); 689 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 690 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 691 } 692 return sent; 693 694 case HFP_CMD_RETRIEVE_AG_INDICATORS: 695 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 696 // HF requested AG Indicators and we did expect it 697 hfp_connection->send_ag_indicators_segment = 0; 698 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 699 // continue below in state switch 700 } 701 break; 702 703 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 704 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 705 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 706 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 707 return 1; 708 709 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 710 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 711 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 712 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 713 } else if (has_hf_indicators_feature(hfp_connection)){ 714 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 715 } else { 716 hfp_ag_slc_established(hfp_connection); 717 } 718 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 719 return 1; 720 721 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 722 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 723 if (has_hf_indicators_feature(hfp_connection)){ 724 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 725 } 726 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 727 if (!has_hf_indicators_feature(hfp_connection)){ 728 hfp_ag_slc_established(hfp_connection); 729 } 730 return 1; 731 732 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 733 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 734 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 735 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 736 return 1; 737 738 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 739 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 740 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 741 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 742 return 1; 743 744 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 745 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 746 hfp_ag_slc_established(hfp_connection); 747 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 748 return 1; 749 default: 750 break; 751 } 752 753 switch (hfp_connection->state){ 754 case HFP_RETRIEVE_INDICATORS: { 755 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 756 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 757 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 758 if (next_segment < num_segments){ 759 // prepare sending of next segment 760 hfp_connection->send_ag_indicators_segment = next_segment; 761 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 762 } else { 763 // done, go to next state 764 hfp_connection->send_ag_indicators_segment = 0; 765 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 766 } 767 return 1; 768 } 769 default: 770 break; 771 } 772 return 0; 773 } 774 775 static bool hfp_ag_vra_flag_supported(hfp_connection_t * hfp_connection){ 776 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION); 777 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION); 778 return hf && ag; 779 } 780 781 static bool hfp_ag_enhanced_vra_flag_supported(hfp_connection_t * hfp_connection){ 782 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS); 783 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS); 784 return hf && ag; 785 } 786 787 static bool hfp_ag_can_send_enhanced_vra_message_flag_supported(hfp_connection_t * hfp_connection){ 788 int ag = get_bit(hfp_ag_supported_features, HFP_AGSF_VOICE_RECOGNITION_TEXT); 789 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_TEXT); 790 return hf && ag; 791 } 792 793 static bool hfp_ag_can_activate_voice_recognition(hfp_connection_t * hfp_connection){ 794 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 795 return false; 796 } 797 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_OFF){ 798 return false; 799 } 800 return true; 801 } 802 803 static bool hfp_ag_voice_recognition_session_active(hfp_connection_t * hfp_connection){ 804 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 805 return false; 806 } 807 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 808 if (hfp_connection->vra_state == HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO){ 809 return true; 810 } 811 return false; 812 } 813 return true; 814 } 815 816 static bool hfp_ag_is_audio_connection_active(hfp_connection_t * hfp_connection){ 817 switch (hfp_connection->state){ 818 case HFP_W2_CONNECT_SCO: 819 case HFP_W4_SCO_CONNECTED: 820 case HFP_AUDIO_CONNECTION_ESTABLISHED: 821 return true; 822 default: 823 return false; 824 } 825 } 826 827 static void hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection_t * hfp_connection, uint8_t status){ 828 hci_con_handle_t acl_handle = (hfp_connection != NULL) ? hfp_connection->acl_handle : HCI_CON_HANDLE_INVALID; 829 830 uint8_t event[6]; 831 event[0] = HCI_EVENT_HFP_META; 832 event[1] = sizeof(event) - 2; 833 event[2] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE_SENT; 834 little_endian_store_16(event, 3, acl_handle); 835 event[5] = status; 836 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 837 } 838 839 840 static void hfp_ag_emit_hf_indicator_value(hfp_connection_t * hfp_connection, uint16_t uuid, uint8_t value){ 841 hci_con_handle_t acl_handle = (hfp_connection != NULL) ? hfp_connection->acl_handle : HCI_CON_HANDLE_INVALID; 842 843 uint8_t event[8]; 844 event[0] = HCI_EVENT_HFP_META; 845 event[1] = sizeof(event) - 2; 846 event[2] = HFP_SUBEVENT_HF_INDICATOR; 847 little_endian_store_16(event, 3, acl_handle); 848 little_endian_store_16(event, 5, uuid); 849 event[7] = value; 850 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 851 } 852 853 static void hfp_ag_emit_general_simple_event(uint8_t event_subtype){ 854 if (!hfp_ag_callback) return; 855 856 uint8_t event[5]; 857 event[0] = HCI_EVENT_HFP_META; 858 event[1] = sizeof(event) - 2; 859 event[2] = event_subtype; 860 little_endian_store_16(event, 3, HCI_CON_HANDLE_INVALID); 861 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 862 } 863 864 static int hfp_ag_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 865 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 866 return 0; 867 } 868 int done = 0; 869 uint8_t status; 870 871 switch (hfp_connection->command){ 872 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 873 switch (hfp_connection->vra_state_requested){ 874 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_MSG: 875 done = hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection); 876 if (done == 0){ 877 hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 878 } else { 879 hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection, ERROR_CODE_SUCCESS); 880 } 881 hfp_connection->vra_state_requested = hfp_connection->vra_state; 882 return done; 883 884 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_STATUS: 885 done = hfp_ag_send_enhanced_voice_recognition_state_cmd(hfp_connection); 886 if (done == 0){ 887 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 888 } else { 889 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 890 } 891 hfp_connection->vra_state_requested = hfp_connection->vra_state; 892 return done; 893 894 default: 895 done = hfp_ag_send_voice_recognition_cmd(hfp_connection, hfp_connection->ag_activate_voice_recognition_value); 896 if (done == 0){ 897 hfp_connection->vra_state_requested = hfp_connection->vra_state; 898 899 if (hfp_connection->ag_activate_voice_recognition_value == 1){ 900 hfp_emit_voice_recognition_enabled(hfp_connection, done); 901 } else { 902 hfp_emit_voice_recognition_disabled(hfp_connection, done); 903 } 904 return 0; 905 } 906 break; 907 } 908 break; 909 910 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 911 // HF initiatied voice recognition, parser extracted activation value 912 switch (hfp_connection->ag_activate_voice_recognition_value){ 913 case 0: 914 if (hfp_ag_voice_recognition_session_active(hfp_connection)){ 915 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 916 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 917 } 918 break; 919 920 case 1: 921 if (hfp_ag_can_activate_voice_recognition(hfp_connection)){ 922 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 923 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 924 } 925 break; 926 927 case 2: 928 if (hfp_ag_voice_recognition_session_active(hfp_connection)){ 929 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 930 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 931 } 932 break; 933 default: 934 break; 935 } 936 if (done == 0){ 937 hfp_connection->vra_state_requested = hfp_connection->vra_state; 938 done = hfp_ag_send_error(hfp_connection->rfcomm_cid); 939 return 1; 940 } 941 break; 942 943 default: 944 return 0; 945 } 946 947 switch (hfp_connection->vra_state_requested){ 948 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 949 if (!hfp_ag_is_audio_connection_active(hfp_connection)){ 950 status = hfp_ag_setup_audio_connection(hfp_connection); 951 if (status != ERROR_CODE_SUCCESS){ 952 hfp_connection->vra_state_requested = hfp_connection->vra_state; 953 hfp_emit_voice_recognition_enabled(hfp_connection, status); 954 return 0; 955 } 956 } 957 hfp_connection->enhanced_voice_recognition_enabled = true; 958 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 959 hfp_connection->vra_state_requested = hfp_connection->vra_state; 960 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 961 break; 962 963 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 964 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 965 hfp_connection->vra_state_requested = hfp_connection->vra_state; 966 967 // release audio connection only if it was opened after audio VR activated 968 if (hfp_ag_is_audio_connection_active(hfp_connection) && !hfp_connection->ag_audio_connection_opened_before_vra){ 969 hfp_trigger_release_audio_connection(hfp_connection); 970 } 971 972 hfp_emit_voice_recognition_disabled(hfp_connection, ERROR_CODE_SUCCESS); 973 break; 974 975 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 976 // open only if audio connection does not already exist 977 if (!hfp_ag_is_audio_connection_active(hfp_connection)){ 978 status = hfp_ag_setup_audio_connection(hfp_connection); 979 if (status != ERROR_CODE_SUCCESS){ 980 hfp_connection->vra_state_requested = hfp_connection->vra_state; 981 hfp_emit_voice_recognition_enabled(hfp_connection, status); 982 return 0; 983 } 984 } 985 986 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 987 hfp_connection->vra_state_requested = hfp_connection->vra_state; 988 hfp_connection->enhanced_voice_recognition_enabled = hfp_ag_enhanced_vra_flag_supported(hfp_connection); 989 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 990 break; 991 992 default: 993 break; 994 } 995 return done; 996 } 997 998 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 999 int sent = codecs_exchange_state_machine(hfp_connection); 1000 if (sent) return 1; 1001 1002 switch(hfp_connection->command){ 1003 1004 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1005 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 1006 return 1; 1007 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 1008 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 1009 return 1; 1010 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 1011 if (hfp_connection->network_operator.format != 0){ 1012 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1013 } else { 1014 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1015 } 1016 return 1; 1017 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 1018 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1019 return 1; 1020 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 1021 if (hfp_connection->extended_audio_gateway_error){ 1022 hfp_connection->extended_audio_gateway_error = 0; 1023 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 1024 return 1; 1025 } 1026 break; 1027 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 1028 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1029 return 1; 1030 default: 1031 break; 1032 } 1033 return 0; 1034 } 1035 1036 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 1037 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 1038 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 1039 1040 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1041 1042 if (hfp_connection->release_audio_connection){ 1043 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 1044 hfp_connection->release_audio_connection = 0; 1045 gap_disconnect(hfp_connection->sco_handle); 1046 return 1; 1047 } 1048 1049 // accept incoming audio connection (codec negotiation is not used) 1050 if (hfp_connection->accept_sco){ 1051 // notify about codec selection if not done already 1052 if (hfp_connection->negotiated_codec == 0){ 1053 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 1054 } 1055 // 1056 bool incoming_eSCO = hfp_connection->accept_sco == 2; 1057 hfp_connection->accept_sco = 0; 1058 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1059 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 1060 return 1; 1061 } 1062 1063 // run codecs exchange 1064 int sent = codecs_exchange_state_machine(hfp_connection); 1065 if (sent) return 1; 1066 1067 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 1068 if (hfp_connection->establish_audio_connection){ 1069 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1070 hfp_connection->establish_audio_connection = 0; 1071 hfp_setup_synchronous_connection(hfp_connection); 1072 return 1; 1073 } 1074 return 0; 1075 } 1076 1077 static void hfp_ag_set_callsetup_indicator(void){ 1078 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1079 if (!indicator){ 1080 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1081 return; 1082 }; 1083 indicator->status = hfp_gsm_callsetup_status(); 1084 } 1085 1086 static void hfp_ag_set_callheld_indicator(void){ 1087 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1088 if (!indicator){ 1089 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1090 return; 1091 }; 1092 indicator->status = hfp_gsm_callheld_status(); 1093 } 1094 1095 // 1096 // transition implementations for hfp_ag_call_state_machine 1097 // 1098 1099 static void hfp_ag_hf_start_ringing_incoming(hfp_connection_t * hfp_connection){ 1100 if (use_in_band_tone()){ 1101 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 1102 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1103 } else { 1104 hfp_connection->call_state = HFP_CALL_INCOMING_RINGING; 1105 } 1106 } 1107 1108 static void hfp_ag_hf_start_ringing_outgoing(hfp_connection_t * hfp_connection){ 1109 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1110 } 1111 1112 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 1113 hfp_connection->ag_ring = 0; 1114 hfp_connection->ag_send_clip = 0; 1115 } 1116 1117 1118 static void hfp_ag_trigger_incoming_call_during_active_one(void){ 1119 btstack_linked_list_iterator_t it; 1120 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1121 while (btstack_linked_list_iterator_has_next(&it)){ 1122 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1123 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1124 if (hfp_connection->call_state != HFP_CALL_ACTIVE) continue; 1125 1126 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 1127 hfp_ag_run_for_context(hfp_connection); 1128 } 1129 } 1130 1131 static void hfp_ag_trigger_ring_and_clip(void) { 1132 btstack_linked_list_iterator_t it; 1133 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1134 while (btstack_linked_list_iterator_has_next(&it)){ 1135 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1136 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1137 switch (hfp_connection->call_state){ 1138 case HFP_CALL_INCOMING_RINGING: 1139 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1140 case HFP_CALL_OUTGOING_RINGING: 1141 // Queue RING on this connection 1142 hfp_connection->ag_ring = 1; 1143 1144 // HFP v1.8, 4.23 Calling Line Identification (CLI) Notification 1145 // "If the calling subscriber number information is available from the network, the AG shall issue the 1146 // +CLIP unsolicited result code just after every RING indication when the HF is alerted in an incoming call." 1147 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1148 1149 // trigger next message 1150 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1151 break; 1152 default: 1153 break; 1154 } 1155 } 1156 } 1157 1158 // trigger RING and CLIP messages on connections that are ringing 1159 static void hfp_ag_ring_timeout_handler(btstack_timer_source_t * timer){ 1160 hfp_ag_trigger_ring_and_clip(); 1161 1162 btstack_run_loop_set_timer(timer, HFP_RING_PERIOD_MS); // 2 seconds timeout 1163 btstack_run_loop_add_timer(timer); 1164 } 1165 1166 static void hfp_ag_ring_timeout_stop(void){ 1167 btstack_run_loop_remove_timer(&hfp_ag_ring_timeout); 1168 } 1169 1170 static void hfp_ag_start_ringing(void){ 1171 // setup ring timer 1172 btstack_run_loop_remove_timer(&hfp_ag_ring_timeout); 1173 btstack_run_loop_set_timer_handler(&hfp_ag_ring_timeout, hfp_ag_ring_timeout_handler); 1174 btstack_run_loop_set_timer(&hfp_ag_ring_timeout, HFP_RING_PERIOD_MS); // 2 seconds timeout 1175 btstack_run_loop_add_timer(&hfp_ag_ring_timeout); 1176 1177 // emit start ringing 1178 hfp_ag_emit_general_simple_event(HFP_SUBEVENT_START_RINGING); 1179 1180 // send initial RING + CLIP 1181 hfp_ag_trigger_ring_and_clip(); 1182 } 1183 1184 static void hfp_ag_stop_ringing(void){ 1185 hfp_ag_ring_timeout_stop(); 1186 hfp_ag_emit_general_simple_event(HFP_SUBEVENT_STOP_RINGING); 1187 1188 btstack_linked_list_iterator_t it; 1189 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1190 while (btstack_linked_list_iterator_has_next(&it)){ 1191 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1192 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1193 if ((hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) && 1194 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1195 hfp_ag_hf_stop_ringing(hfp_connection); 1196 } 1197 } 1198 1199 static void hfp_ag_trigger_incoming_call_idle(void){ 1200 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 1201 if (indicator_index < 0) return; 1202 1203 // update callsetup state in connections 1204 btstack_linked_list_iterator_t it; 1205 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1206 while (btstack_linked_list_iterator_has_next(&it)){ 1207 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1208 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1209 if (hfp_connection->call_state != HFP_CALL_IDLE) continue; 1210 1211 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1212 1213 hfp_ag_hf_start_ringing_incoming(hfp_connection); 1214 1215 hfp_ag_run_for_context(hfp_connection); 1216 } 1217 1218 // start local ringing - started after connection state has been updated 1219 hfp_ag_start_ringing(); 1220 } 1221 1222 static void hfp_ag_trigger_outgoing_call(void){ 1223 btstack_linked_list_iterator_t it; 1224 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1225 while (btstack_linked_list_iterator_has_next(&it)){ 1226 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1227 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1228 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1229 if (hfp_connection->call_state == HFP_CALL_IDLE){ 1230 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1231 } 1232 } 1233 } 1234 1235 static void hfp_ag_handle_outgoing_call_accepted(hfp_connection_t * hfp_connection){ 1236 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1237 1238 // trigger callsetup to be 1239 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1240 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1241 1242 int indicator_index ; 1243 1244 hfp_ag_set_callsetup_indicator(); 1245 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1246 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1247 1248 // put current call on hold if active 1249 if (put_call_on_hold){ 1250 log_info("AG putting current call on hold for new outgoing call"); 1251 hfp_ag_set_callheld_indicator(); 1252 indicator_index = get_ag_indicator_index_for_name("callheld"); 1253 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1254 } 1255 1256 // start audio if needed 1257 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1258 } 1259 1260 static void hfp_ag_transfer_indicator(const char * name){ 1261 int indicator_index = get_ag_indicator_index_for_name(name); 1262 if (indicator_index < 0) return; 1263 1264 btstack_linked_list_iterator_t it; 1265 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1266 while (btstack_linked_list_iterator_has_next(&it)){ 1267 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1268 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1269 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1270 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1271 hfp_ag_run_for_context(hfp_connection); 1272 } 1273 } 1274 1275 static void hfp_ag_transfer_callsetup_state(void){ 1276 hfp_ag_transfer_indicator("callsetup"); 1277 } 1278 1279 static void hfp_ag_transfer_call_state(void){ 1280 hfp_ag_transfer_indicator("call"); 1281 } 1282 1283 static void hfp_ag_transfer_callheld_state(void){ 1284 hfp_ag_transfer_indicator("callheld"); 1285 } 1286 1287 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 1288 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1289 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1290 1291 hfp_ag_stop_ringing(); 1292 1293 btstack_linked_list_iterator_t it; 1294 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1295 while (btstack_linked_list_iterator_has_next(&it)){ 1296 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1297 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1298 if ((hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) && 1299 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1300 1301 if (hfp_connection == source){ 1302 1303 if (use_in_band_tone()){ 1304 hfp_connection->call_state = HFP_CALL_ACTIVE; 1305 } else { 1306 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 1307 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1308 } 1309 1310 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1311 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1312 1313 } else { 1314 hfp_connection->call_state = HFP_CALL_IDLE; 1315 } 1316 hfp_ag_run_for_context(hfp_connection); 1317 } 1318 } 1319 1320 static void hfp_ag_ag_accept_call(void){ 1321 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1322 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1323 1324 hfp_ag_stop_ringing(); 1325 1326 btstack_linked_list_iterator_t it; 1327 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1328 while (btstack_linked_list_iterator_has_next(&it)){ 1329 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1330 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1331 if (hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) continue; 1332 1333 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1334 1335 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1336 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1337 1338 hfp_ag_run_for_context(hfp_connection); 1339 break; // only single 1340 } 1341 } 1342 1343 static void hfp_ag_trigger_reject_call(void){ 1344 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1345 1346 hfp_ag_stop_ringing(); 1347 1348 btstack_linked_list_iterator_t it; 1349 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1350 while (btstack_linked_list_iterator_has_next(&it)){ 1351 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1352 if (connection->local_role != HFP_ROLE_AG) continue; 1353 if ((connection->call_state != HFP_CALL_INCOMING_RINGING) && 1354 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1355 1356 connection->call_state = HFP_CALL_IDLE; 1357 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1358 1359 if (connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1360 connection->release_audio_connection = 1; 1361 } 1362 hfp_emit_simple_event(connection, HFP_SUBEVENT_CALL_TERMINATED); 1363 hfp_ag_run_for_context(connection); 1364 rfcomm_request_can_send_now_event(connection->rfcomm_cid); 1365 } 1366 } 1367 1368 static void hfp_ag_trigger_terminate_call(void){ 1369 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1370 1371 // no ringing during call 1372 1373 btstack_linked_list_iterator_t it; 1374 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1375 while (btstack_linked_list_iterator_has_next(&it)){ 1376 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1377 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1378 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1379 1380 hfp_connection->call_state = HFP_CALL_IDLE; 1381 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1382 1383 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1384 hfp_connection->release_audio_connection = 1; 1385 } 1386 1387 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1388 hfp_ag_run_for_context(hfp_connection); 1389 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1390 } 1391 } 1392 1393 static void hfp_ag_set_call_indicator(void){ 1394 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1395 if (!indicator){ 1396 log_error("hfp_ag_set_call_state: call indicator is missing"); 1397 return; 1398 }; 1399 indicator->status = hfp_gsm_call_status(); 1400 } 1401 1402 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1403 btstack_linked_list_iterator_t it; 1404 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1405 while (btstack_linked_list_iterator_has_next(&it)){ 1406 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1407 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1408 if (hfp_connection->call_state == call_state) return hfp_connection; 1409 } 1410 return NULL; 1411 } 1412 1413 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1414 btstack_linked_list_iterator_t it; 1415 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1416 while (btstack_linked_list_iterator_has_next(&it)){ 1417 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1418 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1419 hfp_connection->send_response_and_hold_status = state + 1; 1420 } 1421 } 1422 1423 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1424 int indicator_index; 1425 switch (hfp_connection->call_state){ 1426 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1427 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1428 1429 // we got event: audio hfp_connection established 1430 hfp_connection->call_state = HFP_CALL_INCOMING_RINGING; 1431 break; 1432 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1433 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1434 // we got event: audio hfp_connection established 1435 hfp_connection->call_state = HFP_CALL_ACTIVE; 1436 break; 1437 case HFP_CALL_W2_SEND_CALL_WAITING: 1438 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1439 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1440 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1441 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1442 break; 1443 default: 1444 break; 1445 } 1446 return 0; 1447 } 1448 1449 // functions extracted from hfp_ag_call_sm below 1450 static void hfp_ag_handle_reject_outgoing_call(void){ 1451 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1452 if (!hfp_connection){ 1453 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1454 return; 1455 } 1456 1457 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1458 hfp_connection->call_state = HFP_CALL_IDLE; 1459 hfp_connection->send_error = 1; 1460 hfp_ag_run_for_context(hfp_connection); 1461 } 1462 1463 // hfp_connection is used to identify originating HF 1464 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1465 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1466 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1467 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1468 1469 switch (event){ 1470 case HFP_AG_INCOMING_CALL: 1471 switch (hfp_gsm_call_status()){ 1472 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1473 switch (hfp_gsm_callsetup_status()){ 1474 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1475 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1476 hfp_ag_set_callsetup_indicator(); 1477 hfp_ag_trigger_incoming_call_idle(); 1478 log_info("AG rings"); 1479 break; 1480 default: 1481 break; 1482 } 1483 break; 1484 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1485 switch (hfp_gsm_callsetup_status()){ 1486 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1487 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1488 hfp_ag_set_callsetup_indicator(); 1489 hfp_ag_trigger_incoming_call_during_active_one(); 1490 log_info("AG call waiting"); 1491 break; 1492 default: 1493 break; 1494 } 1495 break; 1496 default: 1497 break; 1498 } 1499 break; 1500 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1501 switch (hfp_gsm_call_status()){ 1502 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1503 switch (hfp_gsm_callsetup_status()){ 1504 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1505 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1506 hfp_ag_set_call_indicator(); 1507 hfp_ag_set_callsetup_indicator(); 1508 hfp_ag_ag_accept_call(); 1509 log_info("AG answers call, accept call by GSM"); 1510 break; 1511 default: 1512 break; 1513 } 1514 break; 1515 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1516 switch (hfp_gsm_callsetup_status()){ 1517 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1518 log_info("AG: current call is placed on hold, incoming call gets active"); 1519 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1520 hfp_ag_set_callsetup_indicator(); 1521 hfp_ag_set_callheld_indicator(); 1522 hfp_ag_transfer_callsetup_state(); 1523 hfp_ag_transfer_callheld_state(); 1524 break; 1525 default: 1526 break; 1527 } 1528 break; 1529 default: 1530 break; 1531 } 1532 break; 1533 1534 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1535 switch (hfp_gsm_call_status()){ 1536 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1537 switch (hfp_gsm_callheld_status()){ 1538 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1539 log_info("AG: joining held call with active call"); 1540 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1541 hfp_ag_set_callheld_indicator(); 1542 hfp_ag_transfer_callheld_state(); 1543 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1544 break; 1545 default: 1546 break; 1547 } 1548 break; 1549 default: 1550 break; 1551 } 1552 break; 1553 1554 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1555 switch (hfp_gsm_call_status()){ 1556 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1557 switch (hfp_gsm_callsetup_status()){ 1558 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1559 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1560 hfp_ag_set_callsetup_indicator(); 1561 hfp_ag_set_call_indicator(); 1562 hfp_ag_hf_accept_call(hfp_connection); 1563 hfp_connection->ok_pending = 1; 1564 log_info("HF answers call, accept call by GSM"); 1565 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1566 break; 1567 default: 1568 break; 1569 } 1570 break; 1571 default: 1572 break; 1573 } 1574 break; 1575 1576 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1577 switch (hfp_gsm_call_status()){ 1578 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1579 switch (hfp_gsm_callsetup_status()){ 1580 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1581 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1582 hfp_ag_response_and_hold_active = 1; 1583 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1584 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1585 // as with regular call 1586 hfp_ag_set_call_indicator(); 1587 hfp_ag_set_callsetup_indicator(); 1588 hfp_ag_ag_accept_call(); 1589 log_info("AG response and hold - hold by AG"); 1590 break; 1591 default: 1592 break; 1593 } 1594 break; 1595 default: 1596 break; 1597 } 1598 break; 1599 1600 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1601 switch (hfp_gsm_call_status()){ 1602 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1603 switch (hfp_gsm_callsetup_status()){ 1604 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1605 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1606 hfp_ag_response_and_hold_active = 1; 1607 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1608 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1609 // as with regular call 1610 hfp_ag_set_call_indicator(); 1611 hfp_ag_set_callsetup_indicator(); 1612 hfp_ag_hf_accept_call(hfp_connection); 1613 log_info("AG response and hold - hold by HF"); 1614 break; 1615 default: 1616 break; 1617 } 1618 break; 1619 default: 1620 break; 1621 } 1622 break; 1623 1624 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1625 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1626 if (!hfp_ag_response_and_hold_active) break; 1627 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1628 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1629 hfp_ag_response_and_hold_active = 0; 1630 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1631 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1632 log_info("Held Call accepted and active"); 1633 break; 1634 1635 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1636 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1637 if (!hfp_ag_response_and_hold_active) break; 1638 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1639 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1640 hfp_ag_response_and_hold_active = 0; 1641 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1642 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1643 // from terminate by ag 1644 hfp_ag_set_call_indicator(); 1645 hfp_ag_trigger_terminate_call(); 1646 break; 1647 1648 case HFP_AG_TERMINATE_CALL_BY_HF: 1649 switch (hfp_gsm_call_status()){ 1650 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1651 switch (hfp_gsm_callsetup_status()){ 1652 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1653 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1654 hfp_ag_set_callsetup_indicator(); 1655 hfp_ag_transfer_callsetup_state(); 1656 hfp_ag_trigger_reject_call(); 1657 log_info("HF Rejected Incoming call, AG terminate call"); 1658 break; 1659 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1660 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1661 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1662 hfp_ag_set_callsetup_indicator(); 1663 hfp_ag_transfer_callsetup_state(); 1664 log_info("AG terminate outgoing call process"); 1665 break; 1666 default: 1667 break; 1668 } 1669 break; 1670 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1671 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1672 hfp_ag_set_callsetup_indicator(); 1673 hfp_ag_set_call_indicator(); 1674 hfp_ag_trigger_terminate_call(); 1675 log_info("AG terminate call"); 1676 break; 1677 default: 1678 break; 1679 } 1680 break; 1681 1682 case HFP_AG_TERMINATE_CALL_BY_AG: 1683 switch (hfp_gsm_call_status()){ 1684 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1685 switch (hfp_gsm_callsetup_status()){ 1686 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1687 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1688 hfp_ag_set_callsetup_indicator(); 1689 hfp_ag_trigger_reject_call(); 1690 log_info("AG Rejected Incoming call, AG terminate call"); 1691 break; 1692 default: 1693 break; 1694 } 1695 break; 1696 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1697 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1698 hfp_ag_set_callsetup_indicator(); 1699 hfp_ag_set_call_indicator(); 1700 hfp_ag_trigger_terminate_call(); 1701 log_info("AG terminate call"); 1702 break; 1703 default: 1704 break; 1705 } 1706 break; 1707 case HFP_AG_CALL_DROPPED: 1708 switch (hfp_gsm_call_status()){ 1709 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1710 switch (hfp_gsm_callsetup_status()){ 1711 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1712 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1713 hfp_ag_stop_ringing(); 1714 break; 1715 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1716 log_info("Outgoing call interrupted\n"); 1717 break; 1718 default: 1719 break; 1720 } 1721 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1722 hfp_ag_set_callsetup_indicator(); 1723 hfp_ag_transfer_callsetup_state(); 1724 hfp_ag_trigger_terminate_call(); 1725 break; 1726 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1727 if (hfp_ag_response_and_hold_active) { 1728 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1729 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1730 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1731 } 1732 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1733 hfp_ag_set_callsetup_indicator(); 1734 hfp_ag_set_call_indicator(); 1735 hfp_ag_trigger_terminate_call(); 1736 log_info("AG notify call dropped"); 1737 break; 1738 default: 1739 break; 1740 } 1741 break; 1742 1743 case HFP_AG_OUTGOING_CALL_INITIATED_BY_HF: 1744 // directly reject call if number of free slots is exceeded 1745 if (!hfp_gsm_call_possible()){ 1746 hfp_connection->send_error = 1; 1747 hfp_ag_run_for_context(hfp_connection); 1748 break; 1749 } 1750 1751 // note: number not used currently 1752 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1753 1754 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1755 1756 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1757 break; 1758 1759 case HFP_AG_OUTGOING_CALL_INITIATED_BY_AG: 1760 // directly reject call if number of free slots is exceeded 1761 if (!hfp_gsm_call_possible()) { 1762 // TODO: no error for user 1763 break; 1764 } 1765 switch (hfp_gsm_call_status()) { 1766 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1767 switch (hfp_gsm_callsetup_status()) { 1768 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1769 // note: number not used currently 1770 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, 0, 0, "1234567"); 1771 // init call state for all connections 1772 hfp_ag_trigger_outgoing_call(); 1773 // get first one and accept call 1774 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1775 if (hfp_connection) { 1776 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1777 } 1778 break; 1779 default: 1780 // TODO: no error for user 1781 break; 1782 } 1783 break; 1784 default: 1785 // TODO: no error for user 1786 break; 1787 } 1788 break; 1789 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1790 // directly reject call if number of free slots is exceeded 1791 if (!hfp_gsm_call_possible()){ 1792 hfp_connection->send_error = 1; 1793 hfp_ag_run_for_context(hfp_connection); 1794 break; 1795 } 1796 1797 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1798 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1799 1800 log_info("Redial last number"); 1801 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1802 1803 if (strlen(last_dialed_number) > 0){ 1804 log_info("Last number exists: accept call"); 1805 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1806 } else { 1807 log_info("log_infoLast number missing: reject call"); 1808 hfp_ag_handle_reject_outgoing_call(); 1809 } 1810 break; 1811 } 1812 case HFP_AG_OUTGOING_CALL_REJECTED: 1813 hfp_ag_handle_reject_outgoing_call(); 1814 break; 1815 1816 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1817 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1818 if (!hfp_connection){ 1819 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1820 break; 1821 } 1822 1823 hfp_connection->ok_pending = 1; 1824 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1825 break; 1826 } 1827 case HFP_AG_OUTGOING_CALL_RINGING: 1828 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1829 if (!hfp_connection){ 1830 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1831 break; 1832 } 1833 1834 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1835 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1836 hfp_ag_set_callsetup_indicator(); 1837 hfp_ag_transfer_callsetup_state(); 1838 hfp_ag_hf_start_ringing_outgoing(hfp_connection); 1839 break; 1840 1841 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1842 // get outgoing call 1843 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1844 if (!hfp_connection){ 1845 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1846 } 1847 if (!hfp_connection){ 1848 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1849 break; 1850 } 1851 1852 bool callheld_status_call_on_hold_and_no_active_calls = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1853 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1854 hfp_connection->call_state = HFP_CALL_ACTIVE; 1855 hfp_ag_set_callsetup_indicator(); 1856 hfp_ag_set_call_indicator(); 1857 hfp_ag_transfer_call_state(); 1858 hfp_ag_transfer_callsetup_state(); 1859 if (callheld_status_call_on_hold_and_no_active_calls){ 1860 hfp_ag_set_callheld_indicator(); 1861 hfp_ag_transfer_callheld_state(); 1862 } 1863 hfp_ag_hf_stop_ringing(hfp_connection); 1864 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1865 break; 1866 } 1867 1868 case HFP_AG_CALL_HOLD_USER_BUSY: 1869 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1870 hfp_ag_set_callsetup_indicator(); 1871 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1872 hfp_connection->call_state = HFP_CALL_ACTIVE; 1873 log_info("AG: Call Waiting, User Busy"); 1874 break; 1875 1876 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1877 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1878 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1879 1880 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1881 if (call_held || call_setup_in_progress){ 1882 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1883 0, NULL); 1884 1885 } 1886 1887 if (call_setup_in_progress){ 1888 log_info("AG: Call Dropped, Accept new call"); 1889 hfp_ag_set_callsetup_indicator(); 1890 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1891 } else { 1892 log_info("AG: Call Dropped, Resume held call"); 1893 } 1894 if (call_held){ 1895 hfp_ag_set_callheld_indicator(); 1896 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1897 } 1898 1899 hfp_connection->call_state = HFP_CALL_ACTIVE; 1900 break; 1901 } 1902 1903 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1904 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1905 // only update if callsetup changed 1906 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1907 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1908 NULL); 1909 1910 if (call_setup_in_progress){ 1911 log_info("AG: Call on Hold, Accept new call"); 1912 hfp_ag_set_callsetup_indicator(); 1913 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1914 } else { 1915 log_info("AG: Swap calls"); 1916 } 1917 1918 hfp_ag_set_callheld_indicator(); 1919 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1920 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1921 hfp_connection->call_state = HFP_CALL_ACTIVE; 1922 break; 1923 } 1924 1925 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1926 // Adds a held call to the conversation. 1927 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1928 log_info("AG: Join 3-way-call"); 1929 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1930 hfp_ag_set_callheld_indicator(); 1931 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1932 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1933 } 1934 hfp_connection->call_state = HFP_CALL_ACTIVE; 1935 break; 1936 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1937 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1938 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1939 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1940 hfp_ag_set_call_indicator(); 1941 hfp_ag_set_callheld_indicator(); 1942 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1943 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1944 hfp_connection->call_state = HFP_CALL_IDLE; 1945 break; 1946 1947 default: 1948 break; 1949 } 1950 1951 1952 } 1953 1954 1955 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1956 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1957 if (!active_call) return; 1958 1959 int idx = active_call->index; 1960 hfp_enhanced_call_dir_t dir = active_call->direction; 1961 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1962 hfp_enhanced_call_mode_t mode = active_call->mode; 1963 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1964 uint8_t type = active_call->clip_type; 1965 char * number = active_call->clip_number; 1966 1967 char buffer[100]; 1968 // TODO: check length of a buffer, to fit the MTU 1969 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1970 if (number){ 1971 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1972 } 1973 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1974 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, 1975 mode, mpty, type, number); 1976 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1977 } 1978 1979 // sends pending command, returns if command was sent 1980 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1981 if (hfp_connection->send_status_of_current_calls){ 1982 hfp_connection->ok_pending = 0; 1983 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1984 hfp_connection->next_call_index++; 1985 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1986 return 1; 1987 } else { 1988 // 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 1989 hfp_connection->next_call_index = 0; 1990 hfp_connection->ok_pending = 1; 1991 hfp_connection->send_status_of_current_calls = 0; 1992 } 1993 } 1994 1995 if (hfp_connection->ag_notify_incoming_call_waiting){ 1996 hfp_connection->ag_notify_incoming_call_waiting = 0; 1997 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1998 return 1; 1999 } 2000 2001 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 2002 hfp_connection->ok_pending = 0; 2003 hfp_connection->send_error = 0; 2004 hfp_connection->command = HFP_CMD_NONE; 2005 hfp_ag_send_error(hfp_connection->rfcomm_cid); 2006 return 1; 2007 } 2008 2009 if (hfp_connection->send_error){ 2010 hfp_connection->send_error = 0; 2011 hfp_connection->command = HFP_CMD_NONE; 2012 hfp_ag_send_error(hfp_connection->rfcomm_cid); 2013 return 1; 2014 } 2015 2016 // note: before update AG indicators and ok_pending 2017 if (hfp_connection->send_response_and_hold_status){ 2018 int status = hfp_connection->send_response_and_hold_status - 1; 2019 hfp_connection->send_response_and_hold_status = 0; 2020 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 2021 return 1; 2022 } 2023 2024 if (hfp_connection->ok_pending){ 2025 hfp_connection->ok_pending = 0; 2026 hfp_connection->command = HFP_CMD_NONE; 2027 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2028 return 1; 2029 } 2030 2031 // update AG indicators 2032 if (hfp_connection->ag_indicators_status_update_bitmap){ 2033 int i; 2034 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 2035 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 2036 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 2037 if (!hfp_connection->enable_status_update_for_ag_indicators) { 2038 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 2039 break; 2040 } 2041 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 2042 return 1; 2043 } 2044 } 2045 } 2046 2047 if (hfp_connection->ag_send_no_carrier){ 2048 hfp_connection->ag_send_no_carrier = false; 2049 hfp_ag_send_no_carrier(hfp_connection->rfcomm_cid); 2050 return 1; 2051 } 2052 2053 if (hfp_connection->ag_ring){ 2054 hfp_connection->ag_ring = 0; 2055 hfp_connection->command = HFP_CMD_NONE; 2056 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 2057 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 2058 return 1; 2059 } 2060 2061 if (hfp_connection->ag_send_clip){ 2062 hfp_connection->ag_send_clip = 0; 2063 hfp_connection->command = HFP_CMD_NONE; 2064 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 2065 return 1; 2066 } 2067 2068 if (hfp_connection->send_phone_number_for_voice_tag){ 2069 hfp_connection->send_phone_number_for_voice_tag = 0; 2070 hfp_connection->command = HFP_CMD_NONE; 2071 hfp_connection->ok_pending = 1; 2072 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 2073 return 1; 2074 } 2075 2076 if (hfp_connection->send_subscriber_number){ 2077 if (hfp_connection->next_subscriber_number_to_send < hfp_ag_subscriber_numbers_count){ 2078 hfp_phone_number_t phone = hfp_ag_subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 2079 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 2080 } else { 2081 hfp_connection->send_subscriber_number = 0; 2082 hfp_connection->next_subscriber_number_to_send = 0; 2083 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2084 } 2085 hfp_connection->command = HFP_CMD_NONE; 2086 return 1; 2087 } 2088 2089 if (hfp_connection->send_microphone_gain){ 2090 hfp_connection->send_microphone_gain = 0; 2091 hfp_connection->command = HFP_CMD_NONE; 2092 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 2093 return 1; 2094 } 2095 2096 if (hfp_connection->send_speaker_gain){ 2097 hfp_connection->send_speaker_gain = 0; 2098 hfp_connection->command = HFP_CMD_NONE; 2099 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 2100 return 1; 2101 } 2102 2103 if (hfp_connection->send_ag_status_indicators){ 2104 hfp_connection->send_ag_status_indicators = 0; 2105 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 2106 return 1; 2107 } 2108 2109 return 0; 2110 } 2111 2112 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 2113 2114 btstack_assert(hfp_connection != NULL); 2115 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 2116 2117 // during SDP query, RFCOMM CID is not set 2118 if (hfp_connection->rfcomm_cid == 0) return; 2119 2120 // assert command could be sent 2121 if (hci_can_send_command_packet_now() == 0) return; 2122 2123 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 2124 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 2125 hfp_connection->release_audio_connection = 0; 2126 gap_disconnect(hfp_connection->sco_handle); 2127 return; 2128 } 2129 2130 #ifdef ENABLE_CC256X_ASSISTED_HFP 2131 // WBS Disassociate 2132 if (hfp_connection->cc256x_send_wbs_disassociate){ 2133 hfp_connection->cc256x_send_wbs_disassociate = false; 2134 hci_send_cmd(&hci_ti_wbs_disassociate); 2135 return; 2136 } 2137 // Write Codec Config 2138 if (hfp_connection->cc256x_send_write_codec_config){ 2139 hfp_connection->cc256x_send_write_codec_config = false; 2140 hfp_cc256x_write_codec_config(hfp_connection); 2141 return; 2142 } 2143 // WBS Associate 2144 if (hfp_connection->cc256x_send_wbs_associate){ 2145 hfp_connection->cc256x_send_wbs_associate = false; 2146 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 2147 return; 2148 } 2149 #endif 2150 #ifdef ENABLE_BCM_PCM_WBS 2151 // Enable WBS 2152 if (hfp_connection->bcm_send_enable_wbs){ 2153 hfp_connection->bcm_send_enable_wbs = false; 2154 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 2155 return; 2156 } 2157 // Write I2S/PCM params 2158 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 2159 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 2160 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 2161 return; 2162 } 2163 // Disable WBS 2164 if (hfp_connection->bcm_send_disable_wbs){ 2165 hfp_connection->bcm_send_disable_wbs = false; 2166 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 2167 return; 2168 } 2169 #endif 2170 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 2171 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 2172 hfp_finalize_connection_context(hfp_connection); 2173 return; 2174 } 2175 #endif 2176 2177 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 2178 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 2179 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2180 return; 2181 } 2182 2183 int cmd_sent = hfp_ag_send_commands(hfp_connection); 2184 2185 if (!cmd_sent){ 2186 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 2187 } 2188 2189 if (!cmd_sent){ 2190 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 2191 } 2192 2193 if (!cmd_sent){ 2194 cmd_sent = call_setup_state_machine(hfp_connection); 2195 } 2196 2197 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 2198 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 2199 switch (hfp_connection->codecs_state){ 2200 case HFP_CODECS_IDLE: 2201 case HFP_CODECS_RECEIVED_LIST: 2202 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2203 case HFP_CODECS_ERROR: 2204 hfp_connection->trigger_codec_exchange = 0; 2205 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2206 break; 2207 default: 2208 break; 2209 } 2210 } 2211 2212 if (!cmd_sent){ 2213 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 2214 } 2215 2216 if (!cmd_sent){ 2217 cmd_sent = hfp_ag_voice_recognition_state_machine(hfp_connection); 2218 } 2219 2220 // disconnect 2221 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 2222 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 2223 rfcomm_disconnect(hfp_connection->rfcomm_cid); 2224 } 2225 2226 if (cmd_sent){ 2227 hfp_connection->command = HFP_CMD_NONE; 2228 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2229 } 2230 } 2231 2232 static int hfp_parser_is_end_of_line(uint8_t byte){ 2233 return (byte == '\n') || (byte == '\r'); 2234 } 2235 2236 static void hfp_ag_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 2237 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 2238 if (size < 1) return; 2239 uint8_t status = ERROR_CODE_SUCCESS; 2240 2241 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 2242 #ifdef ENABLE_HFP_AT_MESSAGES 2243 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 2244 #endif 2245 2246 // process messages byte-wise 2247 int pos; 2248 for (pos = 0; pos < size ; pos++){ 2249 hfp_parse(hfp_connection, packet[pos], 0); 2250 2251 // parse until end of line 2252 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 2253 2254 hfp_generic_status_indicator_t * indicator; 2255 switch(hfp_connection->command){ 2256 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 2257 // dealt with in hfp_ag_voice_recognition_state_machine 2258 break; 2259 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 2260 if (hfp_ag_response_and_hold_active){ 2261 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 2262 } 2263 hfp_connection->ok_pending = 1; 2264 break; 2265 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 2266 switch(hfp_connection->ag_response_and_hold_action){ 2267 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 2268 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 2269 break; 2270 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 2271 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 2272 break; 2273 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 2274 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 2275 break; 2276 default: 2277 break; 2278 } 2279 hfp_connection->ok_pending = 1; 2280 break; 2281 case HFP_CMD_HF_INDICATOR_STATUS: 2282 hfp_connection->command = HFP_CMD_NONE; 2283 2284 if (hfp_connection->parser_indicator_index < hfp_ag_generic_status_indicators_nr){ 2285 indicator = &hfp_ag_generic_status_indicators[hfp_connection->parser_indicator_index]; 2286 switch (indicator->uuid){ 2287 case HFP_HF_INDICATOR_UUID_ENHANCED_SAFETY: 2288 if (hfp_connection->parser_indicator_value > 1) { 2289 hfp_connection->send_error = 1; 2290 break; 2291 } 2292 hfp_connection->ok_pending = 1; 2293 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2294 break; 2295 case HFP_HF_INDICATOR_UUID_BATTERY_LEVEL: 2296 if (hfp_connection->parser_indicator_value > 100){ 2297 hfp_connection->send_error = 1; 2298 break; 2299 } 2300 hfp_connection->ok_pending = 1; 2301 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2302 break; 2303 default: 2304 hfp_connection->send_error = 1; 2305 break; 2306 } 2307 } else { 2308 hfp_connection->send_error = 1; 2309 } 2310 break; 2311 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 2312 // expected by SLC state machine 2313 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 2314 hfp_connection->send_ag_indicators_segment = 0; 2315 hfp_connection->send_ag_status_indicators = 1; 2316 break; 2317 case HFP_CMD_LIST_CURRENT_CALLS: 2318 hfp_connection->command = HFP_CMD_NONE; 2319 hfp_connection->next_call_index = 0; 2320 hfp_connection->send_status_of_current_calls = 1; 2321 break; 2322 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 2323 if (hfp_ag_subscriber_numbers_count == 0){ 2324 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2325 break; 2326 } 2327 hfp_connection->next_subscriber_number_to_send = 0; 2328 hfp_connection->send_subscriber_number = 1; 2329 break; 2330 case HFP_CMD_TRANSMIT_DTMF_CODES: 2331 { 2332 hfp_connection->command = HFP_CMD_NONE; 2333 char buffer[2]; 2334 buffer[0] = (char) hfp_connection->ag_dtmf_code; 2335 buffer[1] = 0; 2336 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 2337 break; 2338 } 2339 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 2340 hfp_connection->command = HFP_CMD_NONE; 2341 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 2342 break; 2343 case HFP_CMD_TURN_OFF_EC_AND_NR: 2344 hfp_connection->command = HFP_CMD_NONE; 2345 2346 if (get_bit(hfp_ag_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 2347 hfp_connection->ok_pending = 1; 2348 hfp_ag_supported_features = store_bit(hfp_ag_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 2349 status = ERROR_CODE_SUCCESS; 2350 } else { 2351 hfp_connection->send_error = 1; 2352 status = ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2353 } 2354 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 2355 break; 2356 case HFP_CMD_CALL_ANSWERED: 2357 hfp_connection->command = HFP_CMD_NONE; 2358 log_info("HFP: ATA"); 2359 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 2360 break; 2361 case HFP_CMD_HANG_UP_CALL: 2362 hfp_connection->command = HFP_CMD_NONE; 2363 hfp_connection->ok_pending = 1; 2364 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 2365 break; 2366 case HFP_CMD_CALL_HOLD: { 2367 hfp_connection->command = HFP_CMD_NONE; 2368 hfp_connection->ok_pending = 1; 2369 2370 switch (hfp_connection->ag_call_hold_action){ 2371 case 0: 2372 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2373 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2374 break; 2375 case 1: 2376 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2377 // Where both a held and a waiting call exist, the above procedures shall apply to the 2378 // waiting call (i.e., not to the held call) in conflicting situation. 2379 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2380 break; 2381 case 2: 2382 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2383 // Where both a held and a waiting call exist, the above procedures shall apply to the 2384 // waiting call (i.e., not to the held call) in conflicting situation. 2385 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2386 break; 2387 case 3: 2388 // Adds a held call to the conversation. 2389 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2390 break; 2391 case 4: 2392 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2393 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2394 break; 2395 default: 2396 break; 2397 } 2398 hfp_connection->call_index = 0; 2399 break; 2400 } 2401 case HFP_CMD_CALL_PHONE_NUMBER: 2402 hfp_connection->command = HFP_CMD_NONE; 2403 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, hfp_connection); 2404 break; 2405 case HFP_CMD_REDIAL_LAST_NUMBER: 2406 hfp_connection->command = HFP_CMD_NONE; 2407 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2408 break; 2409 case HFP_CMD_ENABLE_CLIP: 2410 hfp_connection->command = HFP_CMD_NONE; 2411 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2412 hfp_connection->ok_pending = 1; 2413 break; 2414 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2415 hfp_connection->command = HFP_CMD_NONE; 2416 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2417 hfp_connection->ok_pending = 1; 2418 break; 2419 case HFP_CMD_SET_SPEAKER_GAIN: 2420 hfp_connection->command = HFP_CMD_NONE; 2421 hfp_connection->ok_pending = 1; 2422 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2423 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2424 break; 2425 case HFP_CMD_SET_MICROPHONE_GAIN: 2426 hfp_connection->command = HFP_CMD_NONE; 2427 hfp_connection->ok_pending = 1; 2428 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2429 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2430 break; 2431 default: 2432 break; 2433 } 2434 } 2435 } 2436 2437 static void hfp_ag_run(void){ 2438 btstack_linked_list_iterator_t it; 2439 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2440 while (btstack_linked_list_iterator_has_next(&it)){ 2441 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2442 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2443 hfp_ag_run_for_context(hfp_connection); 2444 } 2445 } 2446 2447 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2448 hfp_connection_t * hfp_connection = NULL; 2449 switch (packet_type){ 2450 case RFCOMM_DATA_PACKET: 2451 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 2452 btstack_assert(hfp_connection != NULL); 2453 2454 hfp_ag_handle_rfcomm_data(hfp_connection, packet, size); 2455 hfp_ag_run_for_context(hfp_connection); 2456 return; 2457 case HCI_EVENT_PACKET: 2458 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2459 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2460 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid); 2461 btstack_assert(hfp_connection != NULL); 2462 2463 hfp_ag_run_for_context(hfp_connection); 2464 return; 2465 } 2466 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2467 break; 2468 default: 2469 break; 2470 } 2471 2472 hfp_ag_run(); 2473 } 2474 2475 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2476 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2477 hfp_ag_run(); 2478 } 2479 2480 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2481 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2482 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2483 return; 2484 } 2485 int i; 2486 hfp_ag_codecs_nr = codecs_nr; 2487 for (i=0; i < codecs_nr; i++){ 2488 hfp_ag_codecs[i] = codecs[i]; 2489 } 2490 } 2491 2492 void hfp_ag_init_supported_features(uint32_t supported_features){ 2493 hfp_ag_supported_features = supported_features; 2494 } 2495 2496 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2497 hfp_ag_indicators_nr = ag_indicators_nr; 2498 (void)memcpy(hfp_ag_indicators, ag_indicators, 2499 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2500 } 2501 2502 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2503 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2504 hfp_ag_generic_status_indicators_nr = hf_indicators_nr; 2505 (void)memcpy(hfp_ag_generic_status_indicators, hf_indicators, 2506 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2507 } 2508 2509 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2510 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2511 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2512 call_hold_services_nr * sizeof(char *)); 2513 } 2514 2515 2516 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2517 2518 hfp_init(); 2519 hfp_ag_call_hold_services_nr = 0; 2520 hfp_ag_response_and_hold_active = 0; 2521 hfp_ag_indicators_nr = 0; 2522 hfp_ag_codecs_nr = 0; 2523 hfp_ag_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2524 hfp_ag_subscriber_numbers = NULL; 2525 hfp_ag_subscriber_numbers_count = 0; 2526 2527 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2528 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2529 2530 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2531 2532 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2533 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2534 2535 hfp_gsm_init(); 2536 } 2537 2538 void hfp_ag_deinit(void){ 2539 hfp_deinit(); 2540 hfp_gsm_deinit(); 2541 2542 hfp_ag_callback = NULL; 2543 hfp_ag_supported_features = 0; 2544 hfp_ag_codecs_nr = 0; 2545 hfp_ag_indicators_nr = 0; 2546 hfp_ag_call_hold_services_nr = 0; 2547 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2548 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 2549 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2550 hfp_ag_subscriber_numbers = NULL; 2551 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2552 } 2553 2554 uint8_t hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2555 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2556 } 2557 2558 uint8_t hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2559 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2560 if (!hfp_connection){ 2561 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2562 } 2563 2564 hfp_trigger_release_service_level_connection(hfp_connection); 2565 hfp_ag_run_for_context(hfp_connection); 2566 return ERROR_CODE_SUCCESS; 2567 } 2568 2569 uint8_t hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2570 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2571 if (!hfp_connection){ 2572 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2573 } 2574 2575 hfp_connection->extended_audio_gateway_error = 0; 2576 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2577 return ERROR_CODE_COMMAND_DISALLOWED; 2578 } 2579 2580 hfp_connection->extended_audio_gateway_error = error; 2581 hfp_ag_run_for_context(hfp_connection); 2582 return ERROR_CODE_SUCCESS; 2583 } 2584 2585 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2586 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 2587 return ERROR_CODE_COMMAND_DISALLOWED; 2588 } 2589 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 2590 return ERROR_CODE_COMMAND_DISALLOWED; 2591 } 2592 2593 hfp_connection->establish_audio_connection = 1; 2594 if (!has_codec_negotiation_feature(hfp_connection)){ 2595 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2596 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2597 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2598 // now, pick link settings 2599 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2600 #ifdef ENABLE_CC256X_ASSISTED_HFP 2601 hfp_cc256x_prepare_for_sco(hfp_connection); 2602 #endif 2603 return ERROR_CODE_SUCCESS; 2604 } 2605 2606 uint8_t i; 2607 bool codec_was_in_use = false; 2608 bool better_codec_can_be_used = false; 2609 2610 for (i = 0; i<hfp_connection->remote_codecs_nr; i++){ 2611 if (hfp_connection->negotiated_codec == hfp_connection->remote_codecs[i]){ 2612 codec_was_in_use = true; 2613 } else if (hfp_connection->negotiated_codec < hfp_connection->remote_codecs[i]){ 2614 better_codec_can_be_used = true; 2615 } 2616 } 2617 2618 if (!codec_was_in_use || better_codec_can_be_used){ 2619 hfp_connection->trigger_codec_exchange = 1; 2620 hfp_connection->codecs_state = HFP_CODECS_IDLE; 2621 } 2622 return ERROR_CODE_SUCCESS; 2623 } 2624 2625 uint8_t hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2626 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2627 if (!hfp_connection){ 2628 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2629 } 2630 uint8_t status = hfp_ag_setup_audio_connection(hfp_connection); 2631 if (status != ERROR_CODE_SUCCESS){ 2632 return status; 2633 } 2634 hfp_ag_run_for_context(hfp_connection); 2635 return ERROR_CODE_SUCCESS; 2636 } 2637 2638 uint8_t hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2639 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2640 if (!hfp_connection){ 2641 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2642 } 2643 2644 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 2645 return ERROR_CODE_COMMAND_DISALLOWED; 2646 } 2647 2648 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 2649 if (status == ERROR_CODE_SUCCESS){ 2650 hfp_ag_run_for_context(hfp_connection); 2651 } 2652 return status; 2653 } 2654 2655 /** 2656 * @brief Enable in-band ring tone 2657 */ 2658 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2659 if (get_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2660 return; 2661 } 2662 2663 hfp_ag_supported_features = store_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2664 2665 btstack_linked_list_iterator_t it; 2666 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2667 while (btstack_linked_list_iterator_has_next(&it)){ 2668 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2669 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2670 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2671 hfp_ag_run_for_context(hfp_connection); 2672 } 2673 } 2674 2675 /** 2676 * @brief Called from GSM 2677 */ 2678 void hfp_ag_incoming_call(void){ 2679 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2680 } 2681 2682 void hfp_ag_outgoing_call_initiated(const char * number) { 2683 UNUSED(number); 2684 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, NULL); 2685 } 2686 2687 /** 2688 * @brief number is stored. 2689 */ 2690 void hfp_ag_set_clip(uint8_t type, const char * number){ 2691 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2692 } 2693 2694 void hfp_ag_call_dropped(void){ 2695 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2696 } 2697 2698 // call from AG UI 2699 void hfp_ag_answer_incoming_call(void){ 2700 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2701 } 2702 2703 void hfp_ag_join_held_call(void){ 2704 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2705 } 2706 2707 void hfp_ag_terminate_call(void){ 2708 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2709 } 2710 2711 void hfp_ag_outgoing_call_ringing(void){ 2712 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2713 } 2714 2715 void hfp_ag_outgoing_call_established(void){ 2716 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2717 } 2718 2719 void hfp_ag_outgoing_call_rejected(void){ 2720 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2721 } 2722 2723 void hfp_ag_outgoing_call_accepted(void){ 2724 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2725 } 2726 2727 void hfp_ag_hold_incoming_call(void){ 2728 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2729 } 2730 2731 void hfp_ag_accept_held_incoming_call(void) { 2732 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2733 } 2734 2735 void hfp_ag_reject_held_incoming_call(void){ 2736 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2737 } 2738 2739 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2740 int indicator_index = get_ag_indicator_index_for_name(name); 2741 if (indicator_index < 0) return; 2742 hfp_ag_indicators[indicator_index].status = value; 2743 2744 btstack_linked_list_iterator_t it; 2745 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2746 while (btstack_linked_list_iterator_has_next(&it)){ 2747 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2748 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2749 if (!hfp_connection->ag_indicators[indicator_index].enabled) { 2750 log_info("Requested AG indicator '%s' update to %u, but it is not enabled", hfp_ag_indicators[indicator_index].name, value); 2751 continue; 2752 } 2753 log_info("AG indicator '%s' changed to %u, request transfer status", hfp_ag_indicators[indicator_index].name, value); 2754 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2755 hfp_ag_run_for_context(hfp_connection); 2756 } 2757 } 2758 2759 uint8_t hfp_ag_set_registration_status(int registration_status){ 2760 if ((registration_status < 0) || (registration_status > 1)){ 2761 return ERROR_CODE_COMMAND_DISALLOWED; 2762 } 2763 2764 if ( (registration_status == 0) && (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 2765 2766 // if network goes away wihle a call is active: 2767 // - the call gets dropped 2768 // - we send NO CARRIER 2769 // NOTE: the CALL=0 has to be sent before NO CARRIER 2770 2771 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2772 2773 btstack_linked_list_iterator_t it; 2774 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2775 while (btstack_linked_list_iterator_has_next(&it)){ 2776 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2777 hfp_connection->ag_send_no_carrier = true; 2778 } 2779 } 2780 hfp_ag_set_ag_indicator("service", registration_status); 2781 return ERROR_CODE_SUCCESS; 2782 } 2783 2784 uint8_t hfp_ag_set_signal_strength(int signal_strength){ 2785 if ((signal_strength < 0) || (signal_strength > 5)){ 2786 return ERROR_CODE_COMMAND_DISALLOWED; 2787 } 2788 2789 hfp_ag_set_ag_indicator("signal", signal_strength); 2790 return ERROR_CODE_SUCCESS; 2791 } 2792 2793 uint8_t hfp_ag_set_roaming_status(int roaming_status){ 2794 if ((roaming_status < 0) || (roaming_status > 1)){ 2795 return ERROR_CODE_COMMAND_DISALLOWED; 2796 } 2797 2798 hfp_ag_set_ag_indicator("roam", roaming_status); 2799 return ERROR_CODE_SUCCESS; 2800 } 2801 2802 uint8_t hfp_ag_set_battery_level(int battery_level){ 2803 if ((battery_level < 0) || (battery_level > 5)){ 2804 return ERROR_CODE_COMMAND_DISALLOWED; 2805 } 2806 hfp_ag_set_ag_indicator("battchg", battery_level); 2807 return ERROR_CODE_SUCCESS; 2808 } 2809 2810 uint8_t hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle){ 2811 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2812 if (!hfp_connection){ 2813 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2814 } 2815 2816 bool enhanced_vra_supported = hfp_ag_enhanced_vra_flag_supported(hfp_connection); 2817 bool legacy_vra_supported = hfp_ag_vra_flag_supported(hfp_connection); 2818 if (!enhanced_vra_supported && !legacy_vra_supported){ 2819 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2820 } 2821 2822 if (!hfp_ag_can_activate_voice_recognition(hfp_connection)){ 2823 return ERROR_CODE_COMMAND_DISALLOWED; 2824 } 2825 2826 hfp_connection->ag_activate_voice_recognition_value = 1; 2827 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 2828 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2829 hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 2830 hfp_connection->ag_audio_connection_opened_before_vra = hfp_ag_is_audio_connection_active(hfp_connection); 2831 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2832 hfp_ag_run_for_context(hfp_connection); 2833 return ERROR_CODE_SUCCESS; 2834 } 2835 2836 uint8_t hfp_ag_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2837 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2838 if (!hfp_connection){ 2839 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2840 } 2841 2842 bool enhanced_vra_supported = hfp_ag_enhanced_vra_flag_supported(hfp_connection); 2843 bool legacy_vra_supported = hfp_ag_vra_flag_supported(hfp_connection); 2844 2845 if (!enhanced_vra_supported && !legacy_vra_supported){ 2846 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2847 } 2848 2849 if (!hfp_ag_voice_recognition_session_active(hfp_connection)){ 2850 return ERROR_CODE_COMMAND_DISALLOWED; 2851 } 2852 2853 hfp_connection->ag_activate_voice_recognition_value = 0; 2854 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2855 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2856 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2857 hfp_ag_run_for_context(hfp_connection); 2858 return ERROR_CODE_SUCCESS; 2859 } 2860 2861 static uint8_t hfp_ag_enhanced_voice_recognition_send_state(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state){ 2862 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2863 if (!hfp_connection){ 2864 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2865 } 2866 2867 bool enhanced_vra_supported = hfp_ag_enhanced_vra_flag_supported(hfp_connection); 2868 if (!enhanced_vra_supported ){ 2869 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2870 } 2871 2872 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 2873 return ERROR_CODE_COMMAND_DISALLOWED; 2874 } 2875 2876 if (hfp_connection->vra_state != HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO){ 2877 return ERROR_CODE_COMMAND_DISALLOWED; 2878 } 2879 2880 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2881 hfp_connection->ag_vra_state = state; 2882 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_STATUS; 2883 hfp_ag_run_for_context(hfp_connection); 2884 return ERROR_CODE_SUCCESS; 2885 } 2886 2887 uint8_t hfp_ag_enhanced_voice_recognition_report_sending_audio(hci_con_handle_t acl_handle){ 2888 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_STARTING_SOUND); 2889 } 2890 uint8_t hfp_ag_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 2891 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_READY_TO_ACCEPT_AUDIO_INPUT); 2892 } 2893 uint8_t hfp_ag_enhanced_voice_recognition_report_processing_input(hci_con_handle_t acl_handle){ 2894 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_PROCESSING_AUDIO_INPUT); 2895 } 2896 2897 2898 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){ 2899 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2900 if (!hfp_connection){ 2901 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2902 } 2903 2904 bool enhanced_vra_supported = hfp_ag_enhanced_vra_flag_supported(hfp_connection); 2905 if (!enhanced_vra_supported ){ 2906 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2907 } 2908 2909 bool enhanced_vra_msg_supported = hfp_ag_can_send_enhanced_vra_message_flag_supported(hfp_connection); 2910 if (!enhanced_vra_msg_supported ){ 2911 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2912 } 2913 2914 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 2915 return ERROR_CODE_COMMAND_DISALLOWED; 2916 } 2917 2918 if (hfp_connection->vra_state != HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO){ 2919 return ERROR_CODE_COMMAND_DISALLOWED; 2920 } 2921 2922 uint16_t message_len = strlen(msg.text); 2923 2924 if (message_len > HFP_MAX_VR_TEXT_SIZE){ 2925 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2926 } 2927 2928 if ((HFP_VR_TEXT_HEADER_SIZE + message_len) > hfp_connection->rfcomm_mtu){ 2929 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2930 } 2931 2932 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2933 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_MSG; 2934 hfp_connection->ag_msg = msg; 2935 hfp_connection->ag_vra_state = state; 2936 hfp_ag_run_for_context(hfp_connection); 2937 2938 return ERROR_CODE_SUCCESS; 2939 } 2940 2941 2942 uint8_t hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 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 if ((gain < 0) || (gain > 15)){ 2949 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2950 return ERROR_CODE_COMMAND_DISALLOWED; 2951 } 2952 2953 if (hfp_connection->microphone_gain != gain){ 2954 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2955 hfp_connection->microphone_gain = gain; 2956 hfp_connection->send_microphone_gain = 1; 2957 } 2958 hfp_ag_run_for_context(hfp_connection); 2959 return ERROR_CODE_SUCCESS; 2960 } 2961 2962 uint8_t hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2963 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2964 if (!hfp_connection){ 2965 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2966 } 2967 2968 if ((gain < 0) || (gain > 15)){ 2969 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2970 return ERROR_CODE_COMMAND_DISALLOWED; 2971 } 2972 2973 if (hfp_connection->speaker_gain != gain){ 2974 hfp_connection->speaker_gain = gain; 2975 hfp_connection->send_speaker_gain = 1; 2976 } 2977 hfp_ag_run_for_context(hfp_connection); 2978 return ERROR_CODE_SUCCESS; 2979 } 2980 2981 uint8_t hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2982 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2983 if (!hfp_connection){ 2984 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2985 } 2986 2987 hfp_ag_set_clip(0, number); 2988 hfp_connection->send_phone_number_for_voice_tag = 1; 2989 return ERROR_CODE_SUCCESS; 2990 } 2991 2992 uint8_t hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2993 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2994 if (!hfp_connection){ 2995 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2996 } 2997 2998 hfp_connection->send_error = 1; 2999 return ERROR_CODE_SUCCESS; 3000 } 3001 3002 uint8_t hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 3003 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3004 if (!hfp_connection){ 3005 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3006 } 3007 3008 hfp_connection->ok_pending = 1; 3009 return ERROR_CODE_SUCCESS; 3010 } 3011 3012 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 3013 hfp_ag_subscriber_numbers = numbers; 3014 hfp_ag_subscriber_numbers_count = numbers_count; 3015 } 3016 3017 void hfp_ag_clear_last_dialed_number(void){ 3018 hfp_gsm_clear_last_dialed_number(); 3019 } 3020 3021 void hfp_ag_set_last_dialed_number(const char * number){ 3022 hfp_gsm_set_last_dialed_number(number); 3023 } 3024 3025 uint8_t hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 3026 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 3027 if (!hfp_connection){ 3028 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 3029 } 3030 3031 if (!hfp_connection->call_waiting_notification_enabled){ 3032 return ERROR_CODE_COMMAND_DISALLOWED; 3033 } 3034 3035 hfp_connection->ag_notify_incoming_call_waiting = 1; 3036 hfp_ag_run_for_context(hfp_connection); 3037 return ERROR_CODE_SUCCESS; 3038 } 3039 3040 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){ 3041 if (!name){ 3042 name = hfp_ag_default_service_name; 3043 } 3044 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 3045 3046 /* 3047 * 0x01 – Ability to reject a call 3048 * 0x00 – No ability to reject a call 3049 */ 3050 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 3051 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 3052 3053 // Construct SupportedFeatures for SDP bitmap: 3054 // 3055 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 3056 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 3057 // 3058 // Wide band speech (bit 5) requires Codec negotiation 3059 // 3060 uint16_t sdp_features = supported_features & 0x1f; 3061 if ( (wide_band_speech == 1) && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 3062 sdp_features |= 1 << 5; 3063 } 3064 3065 if (supported_features & (1 << HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 3066 sdp_features |= 1 << 6; 3067 } 3068 3069 if (supported_features & (1 << HFP_AGSF_VOICE_RECOGNITION_TEXT)){ 3070 sdp_features |= 1 << 7; 3071 } 3072 3073 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 3074 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 3075 } 3076 3077 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 3078 btstack_assert(callback != NULL); 3079 3080 hfp_ag_callback = callback; 3081 hfp_set_ag_callback(callback); 3082 } 3083