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 } 1332 } 1333 1334 static void hfp_ag_set_call_indicator(void){ 1335 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1336 if (!indicator){ 1337 log_error("hfp_ag_set_call_state: call indicator is missing"); 1338 return; 1339 }; 1340 indicator->status = hfp_gsm_call_status(); 1341 } 1342 1343 static void hfp_ag_stop_ringing(void){ 1344 btstack_linked_list_iterator_t it; 1345 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1346 while (btstack_linked_list_iterator_has_next(&it)){ 1347 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1348 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1349 if ((hfp_connection->call_state != HFP_CALL_INCOMING_RINGING) && 1350 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1351 hfp_ag_hf_stop_ringing(hfp_connection); 1352 } 1353 } 1354 1355 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1356 btstack_linked_list_iterator_t it; 1357 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1358 while (btstack_linked_list_iterator_has_next(&it)){ 1359 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1360 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1361 if (hfp_connection->call_state == call_state) return hfp_connection; 1362 } 1363 return NULL; 1364 } 1365 1366 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1367 btstack_linked_list_iterator_t it; 1368 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1369 while (btstack_linked_list_iterator_has_next(&it)){ 1370 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1371 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1372 hfp_connection->send_response_and_hold_status = state + 1; 1373 } 1374 } 1375 1376 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1377 int indicator_index; 1378 switch (hfp_connection->call_state){ 1379 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1380 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1381 // we got event: audio hfp_connection established 1382 hfp_timeout_start(hfp_connection); 1383 hfp_connection->ag_ring = 1; 1384 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1385 hfp_connection->call_state = HFP_CALL_INCOMING_RINGING; 1386 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGING); 1387 break; 1388 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1389 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1390 // we got event: audio hfp_connection established 1391 hfp_connection->call_state = HFP_CALL_ACTIVE; 1392 break; 1393 case HFP_CALL_W2_SEND_CALL_WAITING: 1394 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1395 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1396 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1397 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1398 break; 1399 default: 1400 break; 1401 } 1402 return 0; 1403 } 1404 1405 // functions extracted from hfp_ag_call_sm below 1406 static void hfp_ag_handle_reject_outgoing_call(void){ 1407 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1408 if (!hfp_connection){ 1409 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1410 return; 1411 } 1412 1413 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1414 hfp_connection->call_state = HFP_CALL_IDLE; 1415 hfp_connection->send_error = 1; 1416 hfp_ag_run_for_context(hfp_connection); 1417 } 1418 1419 // hfp_connection is used to identify originating HF 1420 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1421 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1422 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1423 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1424 1425 switch (event){ 1426 case HFP_AG_INCOMING_CALL: 1427 switch (hfp_gsm_call_status()){ 1428 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1429 switch (hfp_gsm_callsetup_status()){ 1430 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1431 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1432 hfp_ag_set_callsetup_indicator(); 1433 hfp_ag_trigger_incoming_call(); 1434 log_info("AG rings"); 1435 break; 1436 default: 1437 break; 1438 } 1439 break; 1440 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1441 switch (hfp_gsm_callsetup_status()){ 1442 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1443 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1444 hfp_ag_set_callsetup_indicator(); 1445 hfp_ag_trigger_incoming_call(); 1446 log_info("AG call waiting"); 1447 break; 1448 default: 1449 break; 1450 } 1451 break; 1452 default: 1453 break; 1454 } 1455 break; 1456 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1457 switch (hfp_gsm_call_status()){ 1458 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1459 switch (hfp_gsm_callsetup_status()){ 1460 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1461 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1462 hfp_ag_set_call_indicator(); 1463 hfp_ag_set_callsetup_indicator(); 1464 hfp_ag_ag_accept_call(); 1465 log_info("AG answers call, accept call by GSM"); 1466 break; 1467 default: 1468 break; 1469 } 1470 break; 1471 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1472 switch (hfp_gsm_callsetup_status()){ 1473 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1474 log_info("AG: current call is placed on hold, incoming call gets active"); 1475 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1476 hfp_ag_set_callsetup_indicator(); 1477 hfp_ag_set_callheld_indicator(); 1478 hfp_ag_transfer_callsetup_state(); 1479 hfp_ag_transfer_callheld_state(); 1480 break; 1481 default: 1482 break; 1483 } 1484 break; 1485 default: 1486 break; 1487 } 1488 break; 1489 1490 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1491 switch (hfp_gsm_call_status()){ 1492 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1493 switch (hfp_gsm_callheld_status()){ 1494 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1495 log_info("AG: joining held call with active call"); 1496 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1497 hfp_ag_set_callheld_indicator(); 1498 hfp_ag_transfer_callheld_state(); 1499 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1500 break; 1501 default: 1502 break; 1503 } 1504 break; 1505 default: 1506 break; 1507 } 1508 break; 1509 1510 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1511 switch (hfp_gsm_call_status()){ 1512 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1513 switch (hfp_gsm_callsetup_status()){ 1514 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1515 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1516 hfp_ag_set_callsetup_indicator(); 1517 hfp_ag_set_call_indicator(); 1518 hfp_ag_hf_accept_call(hfp_connection); 1519 hfp_connection->ok_pending = 1; 1520 log_info("HF answers call, accept call by GSM"); 1521 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1522 break; 1523 default: 1524 break; 1525 } 1526 break; 1527 default: 1528 break; 1529 } 1530 break; 1531 1532 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1533 switch (hfp_gsm_call_status()){ 1534 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1535 switch (hfp_gsm_callsetup_status()){ 1536 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1537 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1538 hfp_ag_response_and_hold_active = 1; 1539 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1540 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1541 // as with regular call 1542 hfp_ag_set_call_indicator(); 1543 hfp_ag_set_callsetup_indicator(); 1544 hfp_ag_ag_accept_call(); 1545 log_info("AG response and hold - hold by AG"); 1546 break; 1547 default: 1548 break; 1549 } 1550 break; 1551 default: 1552 break; 1553 } 1554 break; 1555 1556 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1557 switch (hfp_gsm_call_status()){ 1558 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1559 switch (hfp_gsm_callsetup_status()){ 1560 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1561 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1562 hfp_ag_response_and_hold_active = 1; 1563 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1564 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1565 // as with regular call 1566 hfp_ag_set_call_indicator(); 1567 hfp_ag_set_callsetup_indicator(); 1568 hfp_ag_hf_accept_call(hfp_connection); 1569 log_info("AG response and hold - hold by HF"); 1570 break; 1571 default: 1572 break; 1573 } 1574 break; 1575 default: 1576 break; 1577 } 1578 break; 1579 1580 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1581 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1582 if (!hfp_ag_response_and_hold_active) break; 1583 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1584 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1585 hfp_ag_response_and_hold_active = 0; 1586 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1587 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1588 log_info("Held Call accepted and active"); 1589 break; 1590 1591 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1592 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1593 if (!hfp_ag_response_and_hold_active) break; 1594 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1595 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1596 hfp_ag_response_and_hold_active = 0; 1597 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1598 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1599 // from terminate by ag 1600 hfp_ag_set_call_indicator(); 1601 hfp_ag_trigger_terminate_call(); 1602 break; 1603 1604 case HFP_AG_TERMINATE_CALL_BY_HF: 1605 switch (hfp_gsm_call_status()){ 1606 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1607 switch (hfp_gsm_callsetup_status()){ 1608 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1609 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1610 hfp_ag_set_callsetup_indicator(); 1611 hfp_ag_transfer_callsetup_state(); 1612 hfp_ag_trigger_reject_call(); 1613 log_info("HF Rejected Incoming call, AG terminate call"); 1614 break; 1615 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1616 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1617 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1618 hfp_ag_set_callsetup_indicator(); 1619 hfp_ag_transfer_callsetup_state(); 1620 log_info("AG terminate outgoing call process"); 1621 break; 1622 default: 1623 break; 1624 } 1625 break; 1626 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1627 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1628 hfp_ag_set_callsetup_indicator(); 1629 hfp_ag_set_call_indicator(); 1630 hfp_ag_trigger_terminate_call(); 1631 log_info("AG terminate call"); 1632 break; 1633 default: 1634 break; 1635 } 1636 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 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 break; 1826 } 1827 1828 case HFP_AG_CALL_HOLD_USER_BUSY: 1829 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1830 hfp_ag_set_callsetup_indicator(); 1831 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1832 hfp_connection->call_state = HFP_CALL_ACTIVE; 1833 log_info("AG: Call Waiting, User Busy"); 1834 break; 1835 1836 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1837 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1838 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1839 1840 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1841 if (call_held || call_setup_in_progress){ 1842 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1843 0, NULL); 1844 1845 } 1846 1847 if (call_setup_in_progress){ 1848 log_info("AG: Call Dropped, Accept new call"); 1849 hfp_ag_set_callsetup_indicator(); 1850 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1851 } else { 1852 log_info("AG: Call Dropped, Resume held call"); 1853 } 1854 if (call_held){ 1855 hfp_ag_set_callheld_indicator(); 1856 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1857 } 1858 1859 hfp_connection->call_state = HFP_CALL_ACTIVE; 1860 break; 1861 } 1862 1863 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1864 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1865 // only update if callsetup changed 1866 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1867 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1868 NULL); 1869 1870 if (call_setup_in_progress){ 1871 log_info("AG: Call on Hold, Accept new call"); 1872 hfp_ag_set_callsetup_indicator(); 1873 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1874 } else { 1875 log_info("AG: Swap calls"); 1876 } 1877 1878 hfp_ag_set_callheld_indicator(); 1879 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1880 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1881 hfp_connection->call_state = HFP_CALL_ACTIVE; 1882 break; 1883 } 1884 1885 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1886 // Adds a held call to the conversation. 1887 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1888 log_info("AG: Join 3-way-call"); 1889 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1890 hfp_ag_set_callheld_indicator(); 1891 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1892 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1893 } 1894 hfp_connection->call_state = HFP_CALL_ACTIVE; 1895 break; 1896 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1897 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1898 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1899 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1900 hfp_ag_set_call_indicator(); 1901 hfp_ag_set_callheld_indicator(); 1902 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1903 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1904 hfp_connection->call_state = HFP_CALL_IDLE; 1905 break; 1906 1907 default: 1908 break; 1909 } 1910 1911 1912 } 1913 1914 1915 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1916 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1917 if (!active_call) return; 1918 1919 int idx = active_call->index; 1920 hfp_enhanced_call_dir_t dir = active_call->direction; 1921 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1922 hfp_enhanced_call_mode_t mode = active_call->mode; 1923 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1924 uint8_t type = active_call->clip_type; 1925 char * number = active_call->clip_number; 1926 1927 char buffer[100]; 1928 // TODO: check length of a buffer, to fit the MTU 1929 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1930 if (number){ 1931 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1932 } 1933 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1934 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, 1935 mode, mpty, type, number); 1936 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1937 } 1938 1939 // sends pending command, returns if command was sent 1940 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1941 if (hfp_connection->send_status_of_current_calls){ 1942 hfp_connection->ok_pending = 0; 1943 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1944 hfp_connection->next_call_index++; 1945 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1946 return 1; 1947 } else { 1948 // 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 1949 hfp_connection->next_call_index = 0; 1950 hfp_connection->ok_pending = 1; 1951 hfp_connection->send_status_of_current_calls = 0; 1952 } 1953 } 1954 1955 if (hfp_connection->ag_notify_incoming_call_waiting){ 1956 hfp_connection->ag_notify_incoming_call_waiting = 0; 1957 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1958 return 1; 1959 } 1960 1961 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1962 hfp_connection->ok_pending = 0; 1963 hfp_connection->send_error = 0; 1964 hfp_connection->command = HFP_CMD_NONE; 1965 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1966 return 1; 1967 } 1968 1969 if (hfp_connection->send_error){ 1970 hfp_connection->send_error = 0; 1971 hfp_connection->command = HFP_CMD_NONE; 1972 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1973 return 1; 1974 } 1975 1976 // note: before update AG indicators and ok_pending 1977 if (hfp_connection->send_response_and_hold_status){ 1978 int status = hfp_connection->send_response_and_hold_status - 1; 1979 hfp_connection->send_response_and_hold_status = 0; 1980 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1981 return 1; 1982 } 1983 1984 if (hfp_connection->ok_pending){ 1985 hfp_connection->ok_pending = 0; 1986 hfp_connection->command = HFP_CMD_NONE; 1987 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1988 return 1; 1989 } 1990 1991 // update AG indicators 1992 if (hfp_connection->ag_indicators_status_update_bitmap){ 1993 int i; 1994 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1995 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1996 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1997 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1998 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1999 break; 2000 } 2001 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 2002 return 1; 2003 } 2004 } 2005 } 2006 2007 if (hfp_connection->ag_send_no_carrier){ 2008 hfp_connection->ag_send_no_carrier = false; 2009 hfp_ag_send_no_carrier(hfp_connection->rfcomm_cid); 2010 return 1; 2011 } 2012 2013 if (hfp_connection->ag_ring){ 2014 hfp_connection->ag_ring = 0; 2015 hfp_connection->command = HFP_CMD_NONE; 2016 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 2017 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 2018 return 1; 2019 } 2020 2021 if (hfp_connection->ag_send_clip){ 2022 hfp_connection->ag_send_clip = 0; 2023 hfp_connection->command = HFP_CMD_NONE; 2024 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 2025 return 1; 2026 } 2027 2028 if (hfp_connection->send_phone_number_for_voice_tag){ 2029 hfp_connection->send_phone_number_for_voice_tag = 0; 2030 hfp_connection->command = HFP_CMD_NONE; 2031 hfp_connection->ok_pending = 1; 2032 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 2033 return 1; 2034 } 2035 2036 if (hfp_connection->send_subscriber_number){ 2037 if (hfp_connection->next_subscriber_number_to_send < hfp_ag_subscriber_numbers_count){ 2038 hfp_phone_number_t phone = hfp_ag_subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 2039 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 2040 } else { 2041 hfp_connection->send_subscriber_number = 0; 2042 hfp_connection->next_subscriber_number_to_send = 0; 2043 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2044 } 2045 hfp_connection->command = HFP_CMD_NONE; 2046 return 1; 2047 } 2048 2049 if (hfp_connection->send_microphone_gain){ 2050 hfp_connection->send_microphone_gain = 0; 2051 hfp_connection->command = HFP_CMD_NONE; 2052 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 2053 return 1; 2054 } 2055 2056 if (hfp_connection->send_speaker_gain){ 2057 hfp_connection->send_speaker_gain = 0; 2058 hfp_connection->command = HFP_CMD_NONE; 2059 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 2060 return 1; 2061 } 2062 2063 if (hfp_connection->send_ag_status_indicators){ 2064 hfp_connection->send_ag_status_indicators = 0; 2065 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 2066 return 1; 2067 } 2068 2069 return 0; 2070 } 2071 2072 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 2073 2074 btstack_assert(hfp_connection != NULL); 2075 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 2076 2077 // during SDP query, RFCOMM CID is not set 2078 if (hfp_connection->rfcomm_cid == 0) return; 2079 2080 // assert command could be sent 2081 if (hci_can_send_command_packet_now() == 0) return; 2082 2083 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 2084 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 2085 hfp_connection->release_audio_connection = 0; 2086 gap_disconnect(hfp_connection->sco_handle); 2087 return; 2088 } 2089 2090 #ifdef ENABLE_CC256X_ASSISTED_HFP 2091 // WBS Disassociate 2092 if (hfp_connection->cc256x_send_wbs_disassociate){ 2093 hfp_connection->cc256x_send_wbs_disassociate = false; 2094 hci_send_cmd(&hci_ti_wbs_disassociate); 2095 return; 2096 } 2097 // Write Codec Config 2098 if (hfp_connection->cc256x_send_write_codec_config){ 2099 hfp_connection->cc256x_send_write_codec_config = false; 2100 hfp_cc256x_write_codec_config(hfp_connection); 2101 return; 2102 } 2103 // WBS Associate 2104 if (hfp_connection->cc256x_send_wbs_associate){ 2105 hfp_connection->cc256x_send_wbs_associate = false; 2106 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 2107 return; 2108 } 2109 #endif 2110 #ifdef ENABLE_BCM_PCM_WBS 2111 // Enable WBS 2112 if (hfp_connection->bcm_send_enable_wbs){ 2113 hfp_connection->bcm_send_enable_wbs = false; 2114 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 2115 return; 2116 } 2117 // Write I2S/PCM params 2118 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 2119 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 2120 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 2121 return; 2122 } 2123 // Disable WBS 2124 if (hfp_connection->bcm_send_disable_wbs){ 2125 hfp_connection->bcm_send_disable_wbs = false; 2126 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 2127 return; 2128 } 2129 #endif 2130 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 2131 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 2132 hfp_finalize_connection_context(hfp_connection); 2133 return; 2134 } 2135 #endif 2136 2137 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 2138 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 2139 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2140 return; 2141 } 2142 2143 int cmd_sent = hfp_ag_send_commands(hfp_connection); 2144 2145 if (!cmd_sent){ 2146 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 2147 } 2148 2149 if (!cmd_sent){ 2150 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 2151 } 2152 2153 if (!cmd_sent){ 2154 cmd_sent = call_setup_state_machine(hfp_connection); 2155 } 2156 2157 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 2158 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 2159 switch (hfp_connection->codecs_state){ 2160 case HFP_CODECS_IDLE: 2161 case HFP_CODECS_RECEIVED_LIST: 2162 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2163 case HFP_CODECS_ERROR: 2164 hfp_connection->trigger_codec_exchange = 0; 2165 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2166 break; 2167 default: 2168 break; 2169 } 2170 } 2171 2172 if (!cmd_sent){ 2173 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 2174 } 2175 2176 if (!cmd_sent){ 2177 cmd_sent = hfp_ag_voice_recognition_state_machine(hfp_connection); 2178 } 2179 2180 // disconnect 2181 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 2182 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 2183 rfcomm_disconnect(hfp_connection->rfcomm_cid); 2184 } 2185 2186 if (cmd_sent){ 2187 hfp_connection->command = HFP_CMD_NONE; 2188 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2189 } 2190 } 2191 2192 static int hfp_parser_is_end_of_line(uint8_t byte){ 2193 return (byte == '\n') || (byte == '\r'); 2194 } 2195 2196 static void hfp_ag_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 2197 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 2198 if (size < 1) return; 2199 uint8_t status = ERROR_CODE_SUCCESS; 2200 2201 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 2202 #ifdef ENABLE_HFP_AT_MESSAGES 2203 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 2204 #endif 2205 2206 // process messages byte-wise 2207 int pos; 2208 for (pos = 0; pos < size ; pos++){ 2209 hfp_parse(hfp_connection, packet[pos], 0); 2210 2211 // parse until end of line 2212 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 2213 2214 hfp_generic_status_indicator_t * indicator; 2215 switch(hfp_connection->command){ 2216 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 2217 // dealt with in hfp_ag_voice_recognition_state_machine 2218 break; 2219 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 2220 if (hfp_ag_response_and_hold_active){ 2221 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 2222 } 2223 hfp_connection->ok_pending = 1; 2224 break; 2225 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 2226 switch(hfp_connection->ag_response_and_hold_action){ 2227 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 2228 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 2229 break; 2230 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 2231 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 2232 break; 2233 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 2234 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 2235 break; 2236 default: 2237 break; 2238 } 2239 hfp_connection->ok_pending = 1; 2240 break; 2241 case HFP_CMD_HF_INDICATOR_STATUS: 2242 hfp_connection->command = HFP_CMD_NONE; 2243 2244 if (hfp_connection->parser_indicator_index < hfp_ag_generic_status_indicators_nr){ 2245 indicator = &hfp_ag_generic_status_indicators[hfp_connection->parser_indicator_index]; 2246 switch (indicator->uuid){ 2247 case HFP_HF_INDICATOR_UUID_ENHANCED_SAFETY: 2248 if (hfp_connection->parser_indicator_value > 1) { 2249 hfp_connection->send_error = 1; 2250 break; 2251 } 2252 hfp_connection->ok_pending = 1; 2253 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2254 break; 2255 case HFP_HF_INDICATOR_UUID_BATTERY_LEVEL: 2256 if (hfp_connection->parser_indicator_value > 100){ 2257 hfp_connection->send_error = 1; 2258 break; 2259 } 2260 hfp_connection->ok_pending = 1; 2261 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2262 break; 2263 default: 2264 hfp_connection->send_error = 1; 2265 break; 2266 } 2267 } else { 2268 hfp_connection->send_error = 1; 2269 } 2270 break; 2271 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 2272 // expected by SLC state machine 2273 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 2274 hfp_connection->send_ag_indicators_segment = 0; 2275 hfp_connection->send_ag_status_indicators = 1; 2276 break; 2277 case HFP_CMD_LIST_CURRENT_CALLS: 2278 hfp_connection->command = HFP_CMD_NONE; 2279 hfp_connection->next_call_index = 0; 2280 hfp_connection->send_status_of_current_calls = 1; 2281 break; 2282 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 2283 if (hfp_ag_subscriber_numbers_count == 0){ 2284 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2285 break; 2286 } 2287 hfp_connection->next_subscriber_number_to_send = 0; 2288 hfp_connection->send_subscriber_number = 1; 2289 break; 2290 case HFP_CMD_TRANSMIT_DTMF_CODES: 2291 { 2292 hfp_connection->command = HFP_CMD_NONE; 2293 char buffer[2]; 2294 buffer[0] = (char) hfp_connection->ag_dtmf_code; 2295 buffer[1] = 0; 2296 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 2297 break; 2298 } 2299 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 2300 hfp_connection->command = HFP_CMD_NONE; 2301 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 2302 break; 2303 case HFP_CMD_TURN_OFF_EC_AND_NR: 2304 hfp_connection->command = HFP_CMD_NONE; 2305 2306 if (get_bit(hfp_ag_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 2307 hfp_connection->ok_pending = 1; 2308 hfp_ag_supported_features = store_bit(hfp_ag_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 2309 status = ERROR_CODE_SUCCESS; 2310 } else { 2311 hfp_connection->send_error = 1; 2312 status = ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2313 } 2314 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 2315 break; 2316 case HFP_CMD_CALL_ANSWERED: 2317 hfp_connection->command = HFP_CMD_NONE; 2318 log_info("HFP: ATA"); 2319 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 2320 break; 2321 case HFP_CMD_HANG_UP_CALL: 2322 hfp_connection->command = HFP_CMD_NONE; 2323 hfp_connection->ok_pending = 1; 2324 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 2325 break; 2326 case HFP_CMD_CALL_HOLD: { 2327 hfp_connection->command = HFP_CMD_NONE; 2328 hfp_connection->ok_pending = 1; 2329 2330 switch (hfp_connection->ag_call_hold_action){ 2331 case 0: 2332 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2333 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2334 break; 2335 case 1: 2336 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2337 // Where both a held and a waiting call exist, the above procedures shall apply to the 2338 // waiting call (i.e., not to the held call) in conflicting situation. 2339 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2340 break; 2341 case 2: 2342 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2343 // Where both a held and a waiting call exist, the above procedures shall apply to the 2344 // waiting call (i.e., not to the held call) in conflicting situation. 2345 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2346 break; 2347 case 3: 2348 // Adds a held call to the conversation. 2349 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2350 break; 2351 case 4: 2352 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2353 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2354 break; 2355 default: 2356 break; 2357 } 2358 hfp_connection->call_index = 0; 2359 break; 2360 } 2361 case HFP_CMD_CALL_PHONE_NUMBER: 2362 hfp_connection->command = HFP_CMD_NONE; 2363 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, hfp_connection); 2364 break; 2365 case HFP_CMD_REDIAL_LAST_NUMBER: 2366 hfp_connection->command = HFP_CMD_NONE; 2367 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2368 break; 2369 case HFP_CMD_ENABLE_CLIP: 2370 hfp_connection->command = HFP_CMD_NONE; 2371 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2372 hfp_connection->ok_pending = 1; 2373 break; 2374 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2375 hfp_connection->command = HFP_CMD_NONE; 2376 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2377 hfp_connection->ok_pending = 1; 2378 break; 2379 case HFP_CMD_SET_SPEAKER_GAIN: 2380 hfp_connection->command = HFP_CMD_NONE; 2381 hfp_connection->ok_pending = 1; 2382 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2383 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2384 break; 2385 case HFP_CMD_SET_MICROPHONE_GAIN: 2386 hfp_connection->command = HFP_CMD_NONE; 2387 hfp_connection->ok_pending = 1; 2388 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2389 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2390 break; 2391 default: 2392 break; 2393 } 2394 } 2395 } 2396 2397 static void hfp_ag_run(void){ 2398 btstack_linked_list_iterator_t it; 2399 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2400 while (btstack_linked_list_iterator_has_next(&it)){ 2401 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2402 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2403 hfp_ag_run_for_context(hfp_connection); 2404 } 2405 } 2406 2407 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2408 hfp_connection_t * hfp_connection = NULL; 2409 switch (packet_type){ 2410 case RFCOMM_DATA_PACKET: 2411 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 2412 btstack_assert(hfp_connection != NULL); 2413 2414 hfp_ag_handle_rfcomm_data(hfp_connection, packet, size); 2415 hfp_ag_run_for_context(hfp_connection); 2416 return; 2417 case HCI_EVENT_PACKET: 2418 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2419 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2420 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid); 2421 btstack_assert(hfp_connection != NULL); 2422 2423 hfp_ag_run_for_context(hfp_connection); 2424 return; 2425 } 2426 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2427 break; 2428 default: 2429 break; 2430 } 2431 2432 hfp_ag_run(); 2433 } 2434 2435 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2436 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2437 hfp_ag_run(); 2438 } 2439 2440 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2441 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2442 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2443 return; 2444 } 2445 int i; 2446 hfp_ag_codecs_nr = codecs_nr; 2447 for (i=0; i < codecs_nr; i++){ 2448 hfp_ag_codecs[i] = codecs[i]; 2449 } 2450 } 2451 2452 void hfp_ag_init_supported_features(uint32_t supported_features){ 2453 hfp_ag_supported_features = supported_features; 2454 } 2455 2456 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2457 hfp_ag_indicators_nr = ag_indicators_nr; 2458 (void)memcpy(hfp_ag_indicators, ag_indicators, 2459 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2460 } 2461 2462 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2463 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2464 hfp_ag_generic_status_indicators_nr = hf_indicators_nr; 2465 (void)memcpy(hfp_ag_generic_status_indicators, hf_indicators, 2466 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2467 } 2468 2469 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2470 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2471 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2472 call_hold_services_nr * sizeof(char *)); 2473 } 2474 2475 2476 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2477 2478 hfp_init(); 2479 hfp_ag_call_hold_services_nr = 0; 2480 hfp_ag_response_and_hold_active = 0; 2481 hfp_ag_indicators_nr = 0; 2482 hfp_ag_codecs_nr = 0; 2483 hfp_ag_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2484 hfp_ag_subscriber_numbers = NULL; 2485 hfp_ag_subscriber_numbers_count = 0; 2486 2487 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2488 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2489 2490 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2491 2492 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2493 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2494 2495 hfp_gsm_init(); 2496 } 2497 2498 void hfp_ag_deinit(void){ 2499 hfp_deinit(); 2500 hfp_gsm_deinit(); 2501 2502 hfp_ag_callback = NULL; 2503 hfp_ag_supported_features = 0; 2504 hfp_ag_codecs_nr = 0; 2505 hfp_ag_indicators_nr = 0; 2506 hfp_ag_call_hold_services_nr = 0; 2507 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2508 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 2509 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2510 hfp_ag_subscriber_numbers = NULL; 2511 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2512 } 2513 2514 uint8_t hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2515 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2516 } 2517 2518 uint8_t hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2519 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2520 if (!hfp_connection){ 2521 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2522 } 2523 2524 hfp_trigger_release_service_level_connection(hfp_connection); 2525 hfp_ag_run_for_context(hfp_connection); 2526 return ERROR_CODE_SUCCESS; 2527 } 2528 2529 uint8_t hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2530 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2531 if (!hfp_connection){ 2532 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2533 } 2534 2535 hfp_connection->extended_audio_gateway_error = 0; 2536 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2537 return ERROR_CODE_COMMAND_DISALLOWED; 2538 } 2539 2540 hfp_connection->extended_audio_gateway_error = error; 2541 hfp_ag_run_for_context(hfp_connection); 2542 return ERROR_CODE_SUCCESS; 2543 } 2544 2545 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2546 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 2547 return ERROR_CODE_COMMAND_DISALLOWED; 2548 } 2549 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 2550 return ERROR_CODE_COMMAND_DISALLOWED; 2551 } 2552 2553 hfp_connection->establish_audio_connection = 1; 2554 if (!has_codec_negotiation_feature(hfp_connection)){ 2555 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2556 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2557 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2558 // now, pick link settings 2559 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2560 #ifdef ENABLE_CC256X_ASSISTED_HFP 2561 hfp_cc256x_prepare_for_sco(hfp_connection); 2562 #endif 2563 return ERROR_CODE_SUCCESS; 2564 } 2565 2566 uint8_t i; 2567 bool codec_was_in_use = false; 2568 bool better_codec_can_be_used = false; 2569 2570 for (i = 0; i<hfp_connection->remote_codecs_nr; i++){ 2571 if (hfp_connection->negotiated_codec == hfp_connection->remote_codecs[i]){ 2572 codec_was_in_use = true; 2573 } else if (hfp_connection->negotiated_codec < hfp_connection->remote_codecs[i]){ 2574 better_codec_can_be_used = true; 2575 } 2576 } 2577 2578 if (!codec_was_in_use || better_codec_can_be_used){ 2579 hfp_connection->trigger_codec_exchange = 1; 2580 hfp_connection->codecs_state = HFP_CODECS_IDLE; 2581 } 2582 return ERROR_CODE_SUCCESS; 2583 } 2584 2585 uint8_t hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2586 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2587 if (!hfp_connection){ 2588 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2589 } 2590 uint8_t status = hfp_ag_setup_audio_connection(hfp_connection); 2591 if (status != ERROR_CODE_SUCCESS){ 2592 return status; 2593 } 2594 hfp_ag_run_for_context(hfp_connection); 2595 return ERROR_CODE_SUCCESS; 2596 } 2597 2598 uint8_t hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2599 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2600 if (!hfp_connection){ 2601 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2602 } 2603 2604 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 2605 return ERROR_CODE_COMMAND_DISALLOWED; 2606 } 2607 2608 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 2609 if (status == ERROR_CODE_SUCCESS){ 2610 hfp_ag_run_for_context(hfp_connection); 2611 } 2612 return status; 2613 } 2614 2615 /** 2616 * @brief Enable in-band ring tone 2617 */ 2618 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2619 if (get_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2620 return; 2621 } 2622 2623 hfp_ag_supported_features = store_bit(hfp_ag_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2624 2625 btstack_linked_list_iterator_t it; 2626 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2627 while (btstack_linked_list_iterator_has_next(&it)){ 2628 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2629 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2630 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2631 hfp_ag_run_for_context(hfp_connection); 2632 } 2633 } 2634 2635 /** 2636 * @brief Called from GSM 2637 */ 2638 void hfp_ag_incoming_call(void){ 2639 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2640 } 2641 2642 void hfp_ag_outgoing_call_initiated(const char * number) { 2643 UNUSED(number); 2644 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, NULL); 2645 } 2646 2647 /** 2648 * @brief number is stored. 2649 */ 2650 void hfp_ag_set_clip(uint8_t type, const char * number){ 2651 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2652 } 2653 2654 void hfp_ag_call_dropped(void){ 2655 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2656 } 2657 2658 // call from AG UI 2659 void hfp_ag_answer_incoming_call(void){ 2660 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2661 } 2662 2663 void hfp_ag_join_held_call(void){ 2664 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2665 } 2666 2667 void hfp_ag_terminate_call(void){ 2668 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2669 } 2670 2671 void hfp_ag_outgoing_call_ringing(void){ 2672 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2673 } 2674 2675 void hfp_ag_outgoing_call_established(void){ 2676 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2677 } 2678 2679 void hfp_ag_outgoing_call_rejected(void){ 2680 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2681 } 2682 2683 void hfp_ag_outgoing_call_accepted(void){ 2684 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2685 } 2686 2687 void hfp_ag_hold_incoming_call(void){ 2688 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2689 } 2690 2691 void hfp_ag_accept_held_incoming_call(void) { 2692 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2693 } 2694 2695 void hfp_ag_reject_held_incoming_call(void){ 2696 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2697 } 2698 2699 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2700 int indicator_index = get_ag_indicator_index_for_name(name); 2701 if (indicator_index < 0) return; 2702 hfp_ag_indicators[indicator_index].status = value; 2703 2704 btstack_linked_list_iterator_t it; 2705 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2706 while (btstack_linked_list_iterator_has_next(&it)){ 2707 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2708 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2709 if (!hfp_connection->ag_indicators[indicator_index].enabled) { 2710 log_info("Requested AG indicator '%s' update to %u, but it is not enabled", hfp_ag_indicators[indicator_index].name, value); 2711 continue; 2712 } 2713 log_info("AG indicator '%s' changed to %u, request transfer status", hfp_ag_indicators[indicator_index].name, value); 2714 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2715 hfp_ag_run_for_context(hfp_connection); 2716 } 2717 } 2718 2719 uint8_t hfp_ag_set_registration_status(int registration_status){ 2720 if ((registration_status < 0) || (registration_status > 1)){ 2721 return ERROR_CODE_COMMAND_DISALLOWED; 2722 } 2723 2724 if ( (registration_status == 0) && (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 2725 2726 // if network goes away wihle a call is active: 2727 // - the call gets dropped 2728 // - we send NO CARRIER 2729 // NOTE: the CALL=0 has to be sent before NO CARRIER 2730 2731 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2732 2733 btstack_linked_list_iterator_t it; 2734 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2735 while (btstack_linked_list_iterator_has_next(&it)){ 2736 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2737 hfp_connection->ag_send_no_carrier = true; 2738 } 2739 } 2740 hfp_ag_set_ag_indicator("service", registration_status); 2741 return ERROR_CODE_SUCCESS; 2742 } 2743 2744 uint8_t hfp_ag_set_signal_strength(int signal_strength){ 2745 if ((signal_strength < 0) || (signal_strength > 5)){ 2746 return ERROR_CODE_COMMAND_DISALLOWED; 2747 } 2748 2749 hfp_ag_set_ag_indicator("signal", signal_strength); 2750 return ERROR_CODE_SUCCESS; 2751 } 2752 2753 uint8_t hfp_ag_set_roaming_status(int roaming_status){ 2754 if ((roaming_status < 0) || (roaming_status > 1)){ 2755 return ERROR_CODE_COMMAND_DISALLOWED; 2756 } 2757 2758 hfp_ag_set_ag_indicator("roam", roaming_status); 2759 return ERROR_CODE_SUCCESS; 2760 } 2761 2762 uint8_t hfp_ag_set_battery_level(int battery_level){ 2763 if ((battery_level < 0) || (battery_level > 5)){ 2764 return ERROR_CODE_COMMAND_DISALLOWED; 2765 } 2766 hfp_ag_set_ag_indicator("battchg", battery_level); 2767 return ERROR_CODE_SUCCESS; 2768 } 2769 2770 static uint8_t activate_voice_recognition(hci_con_handle_t acl_handle, bool enhanced){ 2771 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2772 if (!hfp_connection){ 2773 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2774 } 2775 2776 uint8_t status = hfp_ag_can_activate_voice_recognition(hfp_connection, enhanced); 2777 if (status == ERROR_CODE_SUCCESS){ 2778 hfp_connection->ag_activate_voice_recognition_value = 1; 2779 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 2780 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2781 hfp_connection->enhanced_voice_recognition_enabled = enhanced; 2782 hfp_connection->ag_audio_connection_opened_before_vra = hfp_ag_is_audio_connection_active(hfp_connection); 2783 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2784 hfp_ag_run_for_context(hfp_connection); 2785 } 2786 return status; 2787 } 2788 2789 static uint8_t deactivate_voice_recognition(hci_con_handle_t acl_handle, bool enhanced){ 2790 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2791 if (!hfp_connection){ 2792 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2793 } 2794 uint8_t status = hfp_ag_voice_recognition_session_active(hfp_connection, enhanced); 2795 if (status == ERROR_CODE_SUCCESS){ 2796 hfp_connection->ag_activate_voice_recognition_value = 0; 2797 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2798 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2799 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2800 hfp_ag_run_for_context(hfp_connection); 2801 } 2802 return status; 2803 } 2804 2805 uint8_t hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle){ 2806 return activate_voice_recognition(acl_handle, false); 2807 } 2808 2809 uint8_t hfp_ag_activate_enhanced_voice_recognition(hci_con_handle_t acl_handle){ 2810 return activate_voice_recognition(acl_handle, true); 2811 } 2812 2813 uint8_t hfp_ag_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2814 return deactivate_voice_recognition(acl_handle, false); 2815 } 2816 2817 uint8_t hfp_ag_deactivate_enhanced_voice_recognition(hci_con_handle_t acl_handle){ 2818 return deactivate_voice_recognition(acl_handle, true); 2819 } 2820 2821 static uint8_t hfp_ag_enhanced_voice_recognition_send_state(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state){ 2822 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2823 if (!hfp_connection){ 2824 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2825 } 2826 2827 uint8_t status = hfp_ag_voice_recognition_session_active(hfp_connection, true); 2828 if (status == ERROR_CODE_SUCCESS){ 2829 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2830 hfp_connection->ag_vra_state = state; 2831 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_STATUS; 2832 hfp_ag_run_for_context(hfp_connection); 2833 } 2834 return status; 2835 } 2836 2837 uint8_t hfp_ag_enhanced_voice_recognition_report_sending_audio(hci_con_handle_t acl_handle){ 2838 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_STARTING_SOUND); 2839 } 2840 uint8_t hfp_ag_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 2841 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_READY_TO_ACCEPT_AUDIO_INPUT); 2842 } 2843 uint8_t hfp_ag_enhanced_voice_recognition_report_processing_input(hci_con_handle_t acl_handle){ 2844 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_PROCESSING_AUDIO_INPUT); 2845 } 2846 2847 2848 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){ 2849 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2850 if (!hfp_connection){ 2851 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2852 } 2853 2854 uint8_t status = hfp_ag_can_send_enahnced_voice_recognition_message(hfp_connection, true); 2855 if (status == ERROR_CODE_SUCCESS){ 2856 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2857 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_MSG; 2858 hfp_connection->ag_msg = msg; 2859 hfp_connection->ag_vra_state = state; 2860 hfp_ag_run_for_context(hfp_connection); 2861 } 2862 return status; 2863 } 2864 2865 2866 uint8_t hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2867 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2868 if (!hfp_connection){ 2869 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2870 } 2871 2872 if ((gain < 0) || (gain > 15)){ 2873 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2874 return ERROR_CODE_COMMAND_DISALLOWED; 2875 } 2876 2877 if (hfp_connection->microphone_gain != gain){ 2878 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2879 hfp_connection->microphone_gain = gain; 2880 hfp_connection->send_microphone_gain = 1; 2881 } 2882 hfp_ag_run_for_context(hfp_connection); 2883 return ERROR_CODE_SUCCESS; 2884 } 2885 2886 uint8_t hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2887 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2888 if (!hfp_connection){ 2889 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2890 } 2891 2892 if ((gain < 0) || (gain > 15)){ 2893 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2894 return ERROR_CODE_COMMAND_DISALLOWED; 2895 } 2896 2897 if (hfp_connection->speaker_gain != gain){ 2898 hfp_connection->speaker_gain = gain; 2899 hfp_connection->send_speaker_gain = 1; 2900 } 2901 hfp_ag_run_for_context(hfp_connection); 2902 return ERROR_CODE_SUCCESS; 2903 } 2904 2905 uint8_t hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2906 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2907 if (!hfp_connection){ 2908 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2909 } 2910 2911 hfp_ag_set_clip(0, number); 2912 hfp_connection->send_phone_number_for_voice_tag = 1; 2913 return ERROR_CODE_SUCCESS; 2914 } 2915 2916 uint8_t hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2917 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2918 if (!hfp_connection){ 2919 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2920 } 2921 2922 hfp_connection->send_error = 1; 2923 return ERROR_CODE_SUCCESS; 2924 } 2925 2926 uint8_t hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2927 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2928 if (!hfp_connection){ 2929 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2930 } 2931 2932 hfp_connection->ok_pending = 1; 2933 return ERROR_CODE_SUCCESS; 2934 } 2935 2936 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2937 hfp_ag_subscriber_numbers = numbers; 2938 hfp_ag_subscriber_numbers_count = numbers_count; 2939 } 2940 2941 void hfp_ag_clear_last_dialed_number(void){ 2942 hfp_gsm_clear_last_dialed_number(); 2943 } 2944 2945 void hfp_ag_set_last_dialed_number(const char * number){ 2946 hfp_gsm_set_last_dialed_number(number); 2947 } 2948 2949 uint8_t hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2950 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2951 if (!hfp_connection){ 2952 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2953 } 2954 2955 if (!hfp_connection->call_waiting_notification_enabled){ 2956 return ERROR_CODE_COMMAND_DISALLOWED; 2957 } 2958 2959 hfp_connection->ag_notify_incoming_call_waiting = 1; 2960 hfp_ag_run_for_context(hfp_connection); 2961 return ERROR_CODE_SUCCESS; 2962 } 2963 2964 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){ 2965 if (!name){ 2966 name = hfp_ag_default_service_name; 2967 } 2968 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2969 2970 /* 2971 * 0x01 – Ability to reject a call 2972 * 0x00 – No ability to reject a call 2973 */ 2974 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2975 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2976 2977 // Construct SupportedFeatures for SDP bitmap: 2978 // 2979 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2980 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2981 // 2982 // Wide band speech (bit 5) requires Codec negotiation 2983 // 2984 uint16_t sdp_features = supported_features & 0x1f; 2985 if ( (wide_band_speech == 1) && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2986 sdp_features |= 1 << 5; 2987 } 2988 2989 if (supported_features & (1 << HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2990 sdp_features |= 1 << 6; 2991 } 2992 2993 if (supported_features & (1 << HFP_AGSF_VOICE_RECOGNITION_TEXT)){ 2994 sdp_features |= 1 << 7; 2995 } 2996 2997 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2998 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2999 } 3000 3001 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 3002 btstack_assert(callback != NULL); 3003 3004 hfp_ag_callback = callback; 3005 hfp_set_ag_callback(callback); 3006 } 3007