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