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(hfp_connection_t * hfp_connection); 73 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 74 75 // public prototypes 76 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 77 int get_hfp_generic_status_indicators_nr(void); 78 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 79 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 80 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 81 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 82 83 84 // const 85 static const char default_hfp_ag_service_name[] = "Voice gateway"; 86 87 // globals 88 static btstack_packet_callback_registration_t hfp_ag_hci_event_callback_registration; 89 90 static uint16_t hfp_supported_features; 91 92 static uint8_t hfp_codecs_nr; 93 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 94 95 static int hfp_ag_indicators_nr; 96 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_INDICATORS]; 97 98 static int hfp_generic_status_indicators_nr; 99 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_INDICATORS]; 100 101 static int hfp_ag_call_hold_services_nr; 102 static char *hfp_ag_call_hold_services[6]; 103 static btstack_packet_handler_t hfp_ag_callback; 104 105 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 106 static int hfp_ag_response_and_hold_active; 107 108 // Subscriber information entries 109 static hfp_phone_number_t * subscriber_numbers; 110 static int subscriber_numbers_count; 111 112 // code 113 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 114 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 115 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 116 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 117 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 118 } 119 return hfp_connection->ag_indicators_nr; 120 } 121 122 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 123 // TODO: save only value, and value changed in the hfp_connection? 124 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 125 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 126 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 127 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 128 } 129 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 130 } 131 132 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 133 int i; 134 for (i = 0; i < hfp_ag_indicators_nr; i++){ 135 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 136 return &hfp_ag_indicators[i]; 137 } 138 } 139 return NULL; 140 } 141 142 static int get_ag_indicator_index_for_name(const char * name){ 143 int i; 144 for (i = 0; i < hfp_ag_indicators_nr; i++){ 145 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 146 return i; 147 } 148 } 149 return -1; 150 } 151 152 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 153 btstack_linked_list_iterator_t it; 154 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 155 while (btstack_linked_list_iterator_has_next(&it)){ 156 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 157 if (hfp_connection->acl_handle != handle) continue; 158 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 159 return hfp_connection; 160 } 161 return NULL; 162 } 163 164 static int use_in_band_tone(void){ 165 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 166 } 167 168 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 169 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 170 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 171 return hf && ag; 172 } 173 174 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 175 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 176 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 177 return hf && ag; 178 } 179 180 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 181 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 182 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 183 return hf && ag; 184 } 185 186 /* unsolicited responses */ 187 188 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 189 char buffer[20]; 190 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", 191 HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 192 buffer[sizeof(buffer) - 1] = 0; 193 return send_str_over_rfcomm(cid, buffer); 194 } 195 196 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 197 char buffer[40]; 198 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n\r\nOK\r\n", 199 HFP_SUPPORTED_FEATURES, hfp_supported_features); 200 buffer[sizeof(buffer) - 1] = 0; 201 return send_str_over_rfcomm(cid, buffer); 202 } 203 204 static int hfp_ag_send_ok(uint16_t cid){ 205 char buffer[10]; 206 snprintf(buffer, sizeof(buffer), "\r\nOK\r\n"); 207 buffer[sizeof(buffer) - 1] = 0; 208 return send_str_over_rfcomm(cid, buffer); 209 } 210 211 static int hfp_ag_send_ring(uint16_t cid){ 212 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 213 } 214 215 static int hfp_ag_send_no_carrier(uint16_t cid){ 216 char buffer[15]; 217 snprintf(buffer, sizeof(buffer), "\r\nNO CARRIER\r\n"); 218 buffer[sizeof(buffer) - 1] = 0; 219 return send_str_over_rfcomm(cid, buffer); 220 } 221 222 static int hfp_ag_send_clip(uint16_t cid){ 223 char buffer[50]; 224 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, 225 hfp_gsm_clip_number(), hfp_gsm_clip_type()); 226 buffer[sizeof(buffer) - 1] = 0; 227 return send_str_over_rfcomm(cid, buffer); 228 } 229 230 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 231 char buffer[50]; 232 snprintf(buffer, sizeof(buffer), "\r\n%s: ,\"%s\",%u, , \r\n", 233 HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 234 buffer[sizeof(buffer) - 1] = 0; 235 return send_str_over_rfcomm(cid, buffer); 236 } 237 238 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 239 char buffer[50]; 240 snprintf(buffer, sizeof(buffer), "\r\n%s: %s\r\n", 241 HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 242 buffer[sizeof(buffer) - 1] = 0; 243 return send_str_over_rfcomm(cid, buffer); 244 } 245 246 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 247 char buffer[50]; 248 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", 249 HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), 250 hfp_gsm_clip_type()); 251 buffer[sizeof(buffer) - 1] = 0; 252 return send_str_over_rfcomm(cid, buffer); 253 } 254 255 static int hfp_ag_send_error(uint16_t cid){ 256 char buffer[10]; 257 snprintf(buffer, sizeof(buffer), "\r\nERROR\r\n"); 258 buffer[sizeof(buffer) - 1] = 0; 259 return send_str_over_rfcomm(cid, buffer); 260 } 261 262 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 263 char buffer[20]; 264 snprintf(buffer, sizeof(buffer), "\r\n%s=%d\r\n", 265 HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 266 buffer[sizeof(buffer) - 1] = 0; 267 return send_str_over_rfcomm(cid, buffer); 268 } 269 270 // get size for indicator string 271 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 272 // template: ("$NAME",($MIN,$MAX)) 273 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 274 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 275 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 276 } 277 278 // store indicator 279 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer, uint16_t buffer_size){ 280 snprintf((char *)buffer, buffer_size, "(\"%s\",(%d,%d)),", 281 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 282 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 283 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 284 ((char *)buffer)[buffer_size - 1] = 0; 285 } 286 287 // structure: header [indicator [comma indicator]] footer 288 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 289 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 290 if (!num_indicators) return 2; 291 return 3 + ((num_indicators-1) * 2); 292 } 293 294 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 295 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 296 if (index == 0) { 297 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 298 } 299 index--; 300 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 301 int indicator_index = index >> 1; 302 if ((index & 1) == 0){ 303 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 304 } 305 if (indicator_index == (num_indicators - 1)){ 306 return 8; // "\r\n\r\nOK\r\n" 307 } 308 return 1; // comma 309 } 310 311 static void hfp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer, uint16_t buffer_size){ 312 if (index == 0){ 313 *buffer++ = '\r'; 314 *buffer++ = '\n'; 315 int len = strlen(HFP_INDICATOR); 316 (void)memcpy(buffer, HFP_INDICATOR, len); 317 buffer += len; 318 *buffer++ = ':'; 319 return; 320 } 321 index--; 322 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 323 int indicator_index = index >> 1; 324 if ((index & 1) == 0){ 325 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer, buffer_size); 326 return; 327 } 328 if (indicator_index == (num_indicators-1)){ 329 (void)memcpy(buffer, "\r\n\r\nOK\r\n", 8); 330 return; 331 } 332 *buffer = ','; 333 } 334 335 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 336 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 337 int i; 338 int offset = 0; 339 for (i = 0; i < (hfp_generic_status_indicators_nr-1); i++) { 340 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 341 } 342 if (i < hfp_generic_status_indicators_nr){ 343 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_generic_status_indicators[i].uuid); 344 } 345 return offset; 346 } 347 348 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 349 if (buffer_size < (hfp_generic_status_indicators_nr * 3)) return 0; 350 int i; 351 int offset = 0; 352 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 353 offset += snprintf(buffer+offset, buffer_size-offset, "\r\n%s:%d,%d\r\n", HFP_GENERIC_STATUS_INDICATOR, hfp_generic_status_indicators[i].uuid, hfp_generic_status_indicators[i].state); 354 } 355 return offset; 356 } 357 358 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 359 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 360 int i; 361 int offset = 0; 362 for (i = 0; i < (hfp_ag_indicators_nr-1); i++) { 363 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 364 } 365 if (i<hfp_ag_indicators_nr){ 366 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 367 } 368 return offset; 369 } 370 371 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 372 if (buffer_size < (hfp_ag_call_hold_services_nr * 3)) return 0; 373 int i; 374 int offset = snprintf(buffer, buffer_size, "("); 375 for (i = 0; i < (hfp_ag_call_hold_services_nr-1); i++) { 376 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 377 } 378 if (i<hfp_ag_call_hold_services_nr){ 379 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 380 } 381 return offset; 382 } 383 384 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 385 int start_segment, int num_segments, 386 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 387 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer, uint16_t buffer_size)){ 388 389 // assumes: can send now == true 390 // assumes: num segments > 0 391 // assumes: individual segments are smaller than MTU 392 rfcomm_reserve_packet_buffer(); 393 int mtu = rfcomm_get_max_frame_size(cid); 394 uint8_t * data = rfcomm_get_outgoing_buffer(); 395 int offset = 0; 396 int segment = start_segment; 397 while (segment < num_segments){ 398 int segment_len = get_segment_len(hfp_connection, segment); 399 if ((offset + segment_len + 1) > mtu) break; 400 // append segment. As it appends a '\0', we provide a buffer one byte larger 401 store_segment(hfp_connection, segment, data+offset, segment_len + 1); 402 offset += segment_len; 403 segment++; 404 } 405 rfcomm_send_prepared(cid, offset); 406 #ifdef ENABLE_HFP_AT_MESSAGES 407 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_SENT, (char *) data); 408 #endif 409 return segment; 410 } 411 412 // returns next segment to store 413 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 414 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 415 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 416 hfp_ag_indicators_cmd_generator_get_segment_len, 417 hfp_ag_indicators_cmd_generator_store_segment); 418 } 419 420 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 421 char buffer[40]; 422 const int size = sizeof(buffer); 423 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 424 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 425 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 426 return send_str_over_rfcomm(cid, buffer); 427 } 428 429 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 430 char buffer[40]; 431 const int size = sizeof(buffer); 432 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 433 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 434 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 435 return send_str_over_rfcomm(cid, buffer); 436 } 437 438 439 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 440 return hfp_ag_send_ok(cid); 441 } 442 443 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 444 char buffer[40]; 445 const int size = sizeof(buffer); 446 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 447 offset += hfp_hf_indicators_join(buffer+offset, size-offset-10); 448 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 449 return send_str_over_rfcomm(cid, buffer); 450 } 451 452 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 453 char buffer[40]; 454 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 455 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 456 return send_str_over_rfcomm(cid, buffer); 457 } 458 459 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 460 char buffer[20]; 461 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d\r\n", 462 HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, 463 indicator->status); 464 buffer[sizeof(buffer) - 1] = 0; 465 return send_str_over_rfcomm(cid, buffer); 466 } 467 468 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 469 char buffer[41]; 470 if (strlen(op.name) == 0){ 471 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 472 } else { 473 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 474 offset += snprintf(buffer+offset, 16, "%s", op.name); 475 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 476 } 477 return send_str_over_rfcomm(cid, buffer); 478 } 479 480 static inline int hfp_ag_send_cmd_with_space_and_int(uint16_t cid, const char * cmd, uint8_t value){ 481 char buffer[30]; 482 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", cmd, value); 483 return send_str_over_rfcomm(cid, buffer); 484 } 485 486 487 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 488 char buffer[30]; 489 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 490 return send_str_over_rfcomm(cid, buffer); 491 } 492 493 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 494 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 495 } 496 497 static int hfp_ag_send_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 498 return hfp_ag_send_cmd_with_space_and_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 499 } 500 501 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 502 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 503 } 504 505 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 506 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 507 } 508 509 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 510 return hfp_ag_send_cmd_with_space_and_int(cid, HFP_RESPONSE_AND_HOLD, state); 511 } 512 513 static int hfp_ag_send_enhanced_voice_recognition_cmd(uint16_t cid, uint8_t status, uint8_t state){ 514 char buffer[30]; 515 snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, status, state); 516 return send_str_over_rfcomm(cid, buffer); 517 } 518 519 static int hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection_t *hfp_connection){ 520 char buffer[100]; 521 snprintf(buffer, sizeof(buffer), "\r\n%s: 1,%d,%X,%d,%d,\"%s\"\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, 522 hfp_connection->ag_vra_state, 523 hfp_connection->ag_msg.text_id, 524 hfp_connection->ag_msg.text_type, 525 hfp_connection->ag_msg.text_operation, 526 hfp_connection->ag_msg.text); 527 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 528 } 529 530 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 531 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 532 533 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 534 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 535 return HFP_CODEC_MSBC; 536 } 537 } 538 return HFP_CODEC_CVSD; 539 } 540 541 /* state machines */ 542 543 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 544 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4)); 545 } 546 547 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 548 /* events ( == commands): 549 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 550 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 551 hf_trigger_codec_connection_setup == received BCC 552 ag_trigger_codec_connection_setup == received from AG to send BCS 553 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 554 */ 555 switch (hfp_connection->codecs_state){ 556 case HFP_CODECS_EXCHANGED: 557 if (hfp_connection->command == HFP_CMD_AVAILABLE_CODECS){ 558 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 559 return 1; 560 } 561 break; 562 563 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 564 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 565 break; 566 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 567 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 568 break; 569 default: 570 break; 571 } 572 573 switch (hfp_connection->command){ 574 case HFP_CMD_AVAILABLE_CODECS: 575 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 576 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 577 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 578 return 1; 579 } 580 581 switch (hfp_connection->codecs_state){ 582 case HFP_CODECS_AG_SENT_COMMON_CODEC: 583 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 584 break; 585 default: 586 break; 587 } 588 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 589 return 1; 590 591 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 592 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 593 hfp_connection->establish_audio_connection = 1; 594 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 595 return 1; 596 597 case HFP_CMD_AG_SEND_COMMON_CODEC: 598 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 599 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 600 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 601 return 1; 602 603 case HFP_CMD_HF_CONFIRMED_CODEC: 604 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 605 hfp_connection->codecs_state = HFP_CODECS_ERROR; 606 hfp_ag_send_error(hfp_connection->rfcomm_cid); 607 return 1; 608 } 609 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 610 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 611 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 612 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 613 // now, pick link settings 614 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 615 #ifdef ENABLE_CC256X_ASSISTED_HFP 616 hfp_cc256x_prepare_for_sco(hfp_connection); 617 #endif 618 return 1; 619 default: 620 break; 621 } 622 return 0; 623 } 624 625 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 626 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 627 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 628 629 // if active call exist, set per-hfp_connection state active, too (when audio is on) 630 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 631 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 632 } 633 // if AG is ringing, also start ringing on the HF 634 if ((hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS) && 635 (hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS)){ 636 hfp_ag_hf_start_ringing(hfp_connection); 637 } 638 } 639 640 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 641 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 642 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 643 int sent = 0; 644 switch(hfp_connection->command){ 645 case HFP_CMD_SUPPORTED_FEATURES: 646 switch(hfp_connection->state){ 647 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 648 case HFP_EXCHANGE_SUPPORTED_FEATURES: 649 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 650 if (has_codec_negotiation_feature(hfp_connection)){ 651 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 652 } else { 653 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 654 } 655 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 656 return 1; 657 default: 658 break; 659 } 660 break; 661 case HFP_CMD_AVAILABLE_CODECS: 662 sent = codecs_exchange_state_machine(hfp_connection); 663 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 664 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 665 } 666 return sent; 667 668 case HFP_CMD_RETRIEVE_AG_INDICATORS: 669 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 670 // HF requested AG Indicators and we did expect it 671 hfp_connection->send_ag_indicators_segment = 0; 672 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 673 // continue below in state switch 674 } 675 break; 676 677 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 678 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 679 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 680 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 681 return 1; 682 683 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 684 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 685 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 686 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 687 } else if (has_hf_indicators_feature(hfp_connection)){ 688 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 689 } else { 690 hfp_ag_slc_established(hfp_connection); 691 } 692 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 693 return 1; 694 695 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 696 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 697 if (has_hf_indicators_feature(hfp_connection)){ 698 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 699 } 700 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 701 if (!has_hf_indicators_feature(hfp_connection)){ 702 hfp_ag_slc_established(hfp_connection); 703 } 704 return 1; 705 706 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 707 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 708 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 709 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 710 return 1; 711 712 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 713 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 714 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 715 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 716 return 1; 717 718 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 719 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 720 hfp_ag_slc_established(hfp_connection); 721 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 722 return 1; 723 default: 724 break; 725 } 726 727 switch (hfp_connection->state){ 728 case HFP_RETRIEVE_INDICATORS: { 729 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 730 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 731 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 732 if (next_segment < num_segments){ 733 // prepare sending of next segment 734 hfp_connection->send_ag_indicators_segment = next_segment; 735 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 736 } else { 737 // done, go to next state 738 hfp_connection->send_ag_indicators_segment = 0; 739 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 740 } 741 return 1; 742 } 743 default: 744 break; 745 } 746 return 0; 747 } 748 749 static bool hfp_ag_voice_recognition_supported(hfp_connection_t * hfp_connection){ 750 int ag = get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION); 751 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION); 752 return hf && ag; 753 } 754 755 static uint8_t hfp_ag_can_activate_voice_recognition_for_connection(hfp_connection_t * hfp_connection){ 756 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 757 return ERROR_CODE_COMMAND_DISALLOWED; 758 } 759 if (!hfp_ag_voice_recognition_supported(hfp_connection)){ 760 return ERROR_CODE_COMMAND_DISALLOWED; 761 } 762 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_OFF){ 763 return ERROR_CODE_COMMAND_DISALLOWED; 764 } 765 return ERROR_CODE_SUCCESS; 766 } 767 768 static uint8_t hfp_ag_can_deactivate_voice_recognition_for_connection(hfp_connection_t * hfp_connection){ 769 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 770 return ERROR_CODE_COMMAND_DISALLOWED; 771 } 772 if (!hfp_ag_voice_recognition_supported(hfp_connection)){ 773 return ERROR_CODE_COMMAND_DISALLOWED; 774 } 775 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 776 return ERROR_CODE_COMMAND_DISALLOWED; 777 } 778 return ERROR_CODE_SUCCESS; 779 } 780 781 static bool hfp_ag_is_audio_connection_active(hfp_connection_t * hfp_connection){ 782 switch (hfp_connection->state){ 783 case HFP_W2_CONNECT_SCO: 784 case HFP_W4_SCO_CONNECTED: 785 case HFP_AUDIO_CONNECTION_ESTABLISHED: 786 return true; 787 default: 788 return false; 789 } 790 } 791 792 static int hfp_ag_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 793 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 794 return 0; 795 } 796 int done = 0; 797 uint8_t status; 798 799 switch (hfp_connection->command){ 800 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 801 done = hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition_value); 802 if (done == 0){ 803 hfp_connection->vra_state_requested = hfp_connection->vra_state; 804 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_COMMAND_DISALLOWED, hfp_connection->vra_state); 805 return 0; 806 } 807 break; 808 809 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 810 // HF initiatied voice recognition, parser extracted activation value 811 if (hfp_connection->ag_activate_voice_recognition_value == 0){ 812 if (hfp_ag_can_deactivate_voice_recognition_for_connection(hfp_connection) == ERROR_CODE_SUCCESS){ 813 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 814 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 815 } 816 } else { 817 if (hfp_ag_can_activate_voice_recognition_for_connection(hfp_connection) == ERROR_CODE_SUCCESS){ 818 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 819 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 820 } 821 } 822 if (done == 0){ 823 hfp_connection->vra_state_requested = hfp_connection->vra_state; 824 done = hfp_ag_send_error(hfp_connection->rfcomm_cid); 825 return 1; 826 } 827 break; 828 829 default: 830 return 0; 831 } 832 833 switch (hfp_connection->vra_state_requested){ 834 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 835 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 836 hfp_connection->vra_state_requested = hfp_connection->vra_state; 837 838 // release audio connection only if it was opened before audio VR activated 839 if (hfp_ag_is_audio_connection_active(hfp_connection) && !hfp_connection->ag_audio_connection_opened_after_vra){ 840 hfp_trigger_release_audio_connection(hfp_connection); 841 } 842 843 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS, 0); 844 break; 845 846 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 847 // open only if audio connection does not already exist 848 if (!hfp_ag_is_audio_connection_active(hfp_connection)){ 849 status = hfp_ag_setup_audio_connection(hfp_connection); 850 if (status != ERROR_CODE_SUCCESS){ 851 hfp_connection->vra_state_requested = hfp_connection->vra_state; 852 hfp_emit_voice_recognition_state_event(hfp_connection, status, hfp_connection->vra_state); 853 return 0; 854 } 855 } 856 857 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 858 hfp_connection->vra_state_requested = hfp_connection->vra_state; 859 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS, hfp_connection->vra_state); 860 break; 861 862 default: 863 break; 864 } 865 return done; 866 } 867 868 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 869 int sent = codecs_exchange_state_machine(hfp_connection); 870 if (sent) return 1; 871 872 switch(hfp_connection->command){ 873 874 case HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION: 875 switch (hfp_connection->ag_vra_status){ 876 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_ACTIVATED: 877 hfp_connection->ag_vra_status = HFP_VRA_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 878 hfp_ag_send_enhanced_voice_recognition_cmd(hfp_connection->rfcomm_cid, 1, hfp_connection->ag_vra_state); 879 hfp_ag_setup_audio_connection(hfp_connection); 880 break; 881 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_STATUS: 882 hfp_connection->ag_vra_status = HFP_VRA_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 883 hfp_ag_send_enhanced_voice_recognition_cmd(hfp_connection->rfcomm_cid, 1, hfp_connection->ag_vra_state); 884 break; 885 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_OFF: 886 hfp_connection->ag_vra_status = HFP_VRA_VOICE_RECOGNITION_OFF; 887 hfp_ag_send_enhanced_voice_recognition_cmd(hfp_connection->rfcomm_cid, 0, hfp_connection->ag_vra_state); 888 hfp_trigger_release_audio_connection(hfp_connection); 889 break; 890 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_MSG: 891 hfp_connection->ag_vra_status = HFP_VRA_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 892 hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection); 893 break; 894 default: 895 return 0; 896 } 897 return 1; 898 899 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 900 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 901 return 1; 902 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 903 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 904 return 1; 905 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 906 if (hfp_connection->network_operator.format != 0){ 907 hfp_ag_send_error(hfp_connection->rfcomm_cid); 908 } else { 909 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 910 } 911 return 1; 912 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 913 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 914 return 1; 915 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 916 if (hfp_connection->extended_audio_gateway_error){ 917 hfp_connection->extended_audio_gateway_error = 0; 918 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 919 return 1; 920 } 921 break; 922 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 923 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 924 return 1; 925 default: 926 break; 927 } 928 return 0; 929 } 930 931 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 932 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 933 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 934 935 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 936 937 // accept incoming audio connection (codec negotiation is not used) 938 if (hfp_connection->accept_sco){ 939 // notify about codec selection if not done already 940 if (hfp_connection->negotiated_codec == 0){ 941 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 942 } 943 // 944 bool incoming_eSCO = hfp_connection->accept_sco == 2; 945 hfp_connection->accept_sco = 0; 946 hfp_connection->state = HFP_W4_SCO_CONNECTED; 947 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 948 return 1; 949 } 950 951 // run codecs exchange 952 int sent = codecs_exchange_state_machine(hfp_connection); 953 if (sent) return 1; 954 955 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 956 if (hfp_connection->establish_audio_connection){ 957 hfp_connection->state = HFP_W4_SCO_CONNECTED; 958 hfp_connection->establish_audio_connection = 0; 959 hfp_setup_synchronous_connection(hfp_connection); 960 return 1; 961 } 962 return 0; 963 } 964 965 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 966 btstack_linked_list_iterator_t it; 967 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 968 969 while (btstack_linked_list_iterator_has_next(&it)){ 970 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 971 if ( & hfp_connection->hfp_timeout == ts) { 972 return hfp_connection; 973 } 974 } 975 return NULL; 976 } 977 978 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 979 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 980 if (!hfp_connection) return; 981 982 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 983 hfp_connection->ag_ring = 1; 984 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 985 986 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 987 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 988 989 hfp_ag_run_for_context(hfp_connection); 990 } 991 992 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 993 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 994 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 995 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 996 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 997 } 998 999 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 1000 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 1001 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 1002 } 1003 1004 static void hfp_ag_set_callsetup_indicator(void){ 1005 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1006 if (!indicator){ 1007 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1008 return; 1009 }; 1010 indicator->status = hfp_gsm_callsetup_status(); 1011 } 1012 1013 static void hfp_ag_set_callheld_indicator(void){ 1014 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1015 if (!indicator){ 1016 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1017 return; 1018 }; 1019 indicator->status = hfp_gsm_callheld_status(); 1020 } 1021 1022 // 1023 // transitition implementations for hfp_ag_call_state_machine 1024 // 1025 1026 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 1027 if (use_in_band_tone()){ 1028 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 1029 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1030 } else { 1031 hfp_timeout_start(hfp_connection); 1032 hfp_connection->ag_ring = 1; 1033 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1034 hfp_connection->call_state = HFP_CALL_RINGING; 1035 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1036 } 1037 } 1038 1039 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 1040 hfp_connection->ag_ring = 0; 1041 hfp_connection->ag_send_clip = 0; 1042 hfp_timeout_stop(hfp_connection); 1043 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 1044 } 1045 1046 static void hfp_ag_trigger_incoming_call(void){ 1047 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 1048 if (indicator_index < 0) return; 1049 1050 btstack_linked_list_iterator_t it; 1051 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1052 while (btstack_linked_list_iterator_has_next(&it)){ 1053 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1054 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1055 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1056 if (hfp_connection->call_state == HFP_CALL_IDLE){ 1057 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1058 hfp_ag_hf_start_ringing(hfp_connection); 1059 } 1060 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 1061 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 1062 } 1063 hfp_ag_run_for_context(hfp_connection); 1064 } 1065 } 1066 1067 static void hfp_ag_trigger_outgoing_call(void){ 1068 btstack_linked_list_iterator_t it; 1069 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1070 while (btstack_linked_list_iterator_has_next(&it)){ 1071 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1072 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1073 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1074 if (hfp_connection->call_state == HFP_CALL_IDLE){ 1075 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1076 } 1077 } 1078 } 1079 1080 static void hfp_ag_handle_outgoing_call_accepted(hfp_connection_t * hfp_connection){ 1081 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1082 1083 // trigger callsetup to be 1084 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1085 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1086 1087 int indicator_index ; 1088 1089 hfp_ag_set_callsetup_indicator(); 1090 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1091 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1092 1093 // put current call on hold if active 1094 if (put_call_on_hold){ 1095 log_info("AG putting current call on hold for new outgoing call"); 1096 hfp_ag_set_callheld_indicator(); 1097 indicator_index = get_ag_indicator_index_for_name("callheld"); 1098 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1099 } 1100 1101 // start audio if needed 1102 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1103 } 1104 1105 static void hfp_ag_transfer_indicator(const char * name){ 1106 int indicator_index = get_ag_indicator_index_for_name(name); 1107 if (indicator_index < 0) return; 1108 1109 btstack_linked_list_iterator_t it; 1110 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1111 while (btstack_linked_list_iterator_has_next(&it)){ 1112 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1113 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1114 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1115 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1116 hfp_ag_run_for_context(hfp_connection); 1117 } 1118 } 1119 1120 static void hfp_ag_transfer_callsetup_state(void){ 1121 hfp_ag_transfer_indicator("callsetup"); 1122 } 1123 1124 static void hfp_ag_transfer_call_state(void){ 1125 hfp_ag_transfer_indicator("call"); 1126 } 1127 1128 static void hfp_ag_transfer_callheld_state(void){ 1129 hfp_ag_transfer_indicator("callheld"); 1130 } 1131 1132 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 1133 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1134 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1135 1136 btstack_linked_list_iterator_t it; 1137 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1138 while (btstack_linked_list_iterator_has_next(&it)){ 1139 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1140 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1141 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1142 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1143 1144 hfp_ag_hf_stop_ringing(hfp_connection); 1145 if (hfp_connection == source){ 1146 1147 if (use_in_band_tone()){ 1148 hfp_connection->call_state = HFP_CALL_ACTIVE; 1149 } else { 1150 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 1151 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1152 } 1153 1154 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1155 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1156 1157 } else { 1158 hfp_connection->call_state = HFP_CALL_IDLE; 1159 } 1160 hfp_ag_run_for_context(hfp_connection); 1161 } 1162 } 1163 1164 static void hfp_ag_ag_accept_call(void){ 1165 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1166 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1167 1168 btstack_linked_list_iterator_t it; 1169 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1170 while (btstack_linked_list_iterator_has_next(&it)){ 1171 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1172 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1173 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 1174 1175 hfp_ag_hf_stop_ringing(hfp_connection); 1176 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1177 1178 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1179 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1180 1181 hfp_ag_run_for_context(hfp_connection); 1182 break; // only single 1183 } 1184 } 1185 1186 static void hfp_ag_trigger_reject_call(void){ 1187 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1188 btstack_linked_list_iterator_t it; 1189 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1190 while (btstack_linked_list_iterator_has_next(&it)){ 1191 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1192 if (connection->local_role != HFP_ROLE_AG) continue; 1193 if ((connection->call_state != HFP_CALL_RINGING) && 1194 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1195 hfp_ag_hf_stop_ringing(connection); 1196 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1197 connection->call_state = HFP_CALL_IDLE; 1198 hfp_ag_run_for_context(connection); 1199 } 1200 } 1201 1202 static void hfp_ag_trigger_terminate_call(void){ 1203 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1204 1205 btstack_linked_list_iterator_t it; 1206 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1207 while (btstack_linked_list_iterator_has_next(&it)){ 1208 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1209 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1210 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1211 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1212 hfp_connection->call_state = HFP_CALL_IDLE; 1213 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1214 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1215 hfp_connection->release_audio_connection = 1; 1216 } 1217 hfp_ag_run_for_context(hfp_connection); 1218 } 1219 hfp_emit_simple_event(NULL, HFP_SUBEVENT_CALL_TERMINATED); 1220 } 1221 1222 static void hfp_ag_set_call_indicator(void){ 1223 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1224 if (!indicator){ 1225 log_error("hfp_ag_set_call_state: call indicator is missing"); 1226 return; 1227 }; 1228 indicator->status = hfp_gsm_call_status(); 1229 } 1230 1231 static void hfp_ag_stop_ringing(void){ 1232 btstack_linked_list_iterator_t it; 1233 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1234 while (btstack_linked_list_iterator_has_next(&it)){ 1235 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1236 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1237 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1238 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1239 hfp_ag_hf_stop_ringing(hfp_connection); 1240 } 1241 } 1242 1243 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1244 btstack_linked_list_iterator_t it; 1245 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1246 while (btstack_linked_list_iterator_has_next(&it)){ 1247 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1248 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1249 if (hfp_connection->call_state == call_state) return hfp_connection; 1250 } 1251 return NULL; 1252 } 1253 1254 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1255 btstack_linked_list_iterator_t it; 1256 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1257 while (btstack_linked_list_iterator_has_next(&it)){ 1258 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1259 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1260 hfp_connection->send_response_and_hold_status = state + 1; 1261 } 1262 } 1263 1264 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1265 int indicator_index; 1266 switch (hfp_connection->call_state){ 1267 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1268 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1269 // we got event: audio hfp_connection established 1270 hfp_timeout_start(hfp_connection); 1271 hfp_connection->ag_ring = 1; 1272 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1273 hfp_connection->call_state = HFP_CALL_RINGING; 1274 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1275 break; 1276 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1277 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1278 // we got event: audio hfp_connection established 1279 hfp_connection->call_state = HFP_CALL_ACTIVE; 1280 break; 1281 case HFP_CALL_W2_SEND_CALL_WAITING: 1282 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1283 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1284 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1285 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1286 break; 1287 default: 1288 break; 1289 } 1290 return 0; 1291 } 1292 1293 // functions extracted from hfp_ag_call_sm below 1294 static void hfp_ag_handle_reject_outgoing_call(void){ 1295 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1296 if (!hfp_connection){ 1297 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1298 return; 1299 } 1300 1301 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1302 hfp_connection->call_state = HFP_CALL_IDLE; 1303 hfp_connection->send_error = 1; 1304 hfp_ag_run_for_context(hfp_connection); 1305 } 1306 1307 // hfp_connection is used to identify originating HF 1308 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1309 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1310 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1311 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1312 1313 switch (event){ 1314 case HFP_AG_INCOMING_CALL: 1315 switch (hfp_gsm_call_status()){ 1316 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1317 switch (hfp_gsm_callsetup_status()){ 1318 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1319 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1320 hfp_ag_set_callsetup_indicator(); 1321 hfp_ag_trigger_incoming_call(); 1322 log_info("AG rings"); 1323 break; 1324 default: 1325 break; 1326 } 1327 break; 1328 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1329 switch (hfp_gsm_callsetup_status()){ 1330 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1331 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1332 hfp_ag_set_callsetup_indicator(); 1333 hfp_ag_trigger_incoming_call(); 1334 log_info("AG call waiting"); 1335 break; 1336 default: 1337 break; 1338 } 1339 break; 1340 default: 1341 break; 1342 } 1343 break; 1344 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1345 switch (hfp_gsm_call_status()){ 1346 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1347 switch (hfp_gsm_callsetup_status()){ 1348 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1349 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1350 hfp_ag_set_call_indicator(); 1351 hfp_ag_set_callsetup_indicator(); 1352 hfp_ag_ag_accept_call(); 1353 log_info("AG answers call, accept call by GSM"); 1354 break; 1355 default: 1356 break; 1357 } 1358 break; 1359 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1360 switch (hfp_gsm_callsetup_status()){ 1361 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1362 log_info("AG: current call is placed on hold, incoming call gets active"); 1363 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1364 hfp_ag_set_callsetup_indicator(); 1365 hfp_ag_set_callheld_indicator(); 1366 hfp_ag_transfer_callsetup_state(); 1367 hfp_ag_transfer_callheld_state(); 1368 break; 1369 default: 1370 break; 1371 } 1372 break; 1373 default: 1374 break; 1375 } 1376 break; 1377 1378 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1379 switch (hfp_gsm_call_status()){ 1380 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1381 switch (hfp_gsm_callheld_status()){ 1382 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1383 log_info("AG: joining held call with active call"); 1384 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1385 hfp_ag_set_callheld_indicator(); 1386 hfp_ag_transfer_callheld_state(); 1387 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1388 break; 1389 default: 1390 break; 1391 } 1392 break; 1393 default: 1394 break; 1395 } 1396 break; 1397 1398 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1399 switch (hfp_gsm_call_status()){ 1400 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1401 switch (hfp_gsm_callsetup_status()){ 1402 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1403 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1404 hfp_ag_set_callsetup_indicator(); 1405 hfp_ag_set_call_indicator(); 1406 hfp_ag_hf_accept_call(hfp_connection); 1407 hfp_connection->ok_pending = 1; 1408 log_info("HF answers call, accept call by GSM"); 1409 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1410 break; 1411 default: 1412 break; 1413 } 1414 break; 1415 default: 1416 break; 1417 } 1418 break; 1419 1420 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1421 switch (hfp_gsm_call_status()){ 1422 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1423 switch (hfp_gsm_callsetup_status()){ 1424 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1425 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1426 hfp_ag_response_and_hold_active = 1; 1427 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1428 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1429 // as with regular call 1430 hfp_ag_set_call_indicator(); 1431 hfp_ag_set_callsetup_indicator(); 1432 hfp_ag_ag_accept_call(); 1433 log_info("AG response and hold - hold by AG"); 1434 break; 1435 default: 1436 break; 1437 } 1438 break; 1439 default: 1440 break; 1441 } 1442 break; 1443 1444 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1445 switch (hfp_gsm_call_status()){ 1446 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1447 switch (hfp_gsm_callsetup_status()){ 1448 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1449 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1450 hfp_ag_response_and_hold_active = 1; 1451 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1452 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1453 // as with regular call 1454 hfp_ag_set_call_indicator(); 1455 hfp_ag_set_callsetup_indicator(); 1456 hfp_ag_hf_accept_call(hfp_connection); 1457 log_info("AG response and hold - hold by HF"); 1458 break; 1459 default: 1460 break; 1461 } 1462 break; 1463 default: 1464 break; 1465 } 1466 break; 1467 1468 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1469 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1470 if (!hfp_ag_response_and_hold_active) break; 1471 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1472 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1473 hfp_ag_response_and_hold_active = 0; 1474 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1475 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1476 log_info("Held Call accepted and active"); 1477 break; 1478 1479 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1480 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1481 if (!hfp_ag_response_and_hold_active) break; 1482 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1483 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1484 hfp_ag_response_and_hold_active = 0; 1485 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1486 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1487 // from terminate by ag 1488 hfp_ag_set_call_indicator(); 1489 hfp_ag_trigger_terminate_call(); 1490 break; 1491 1492 case HFP_AG_TERMINATE_CALL_BY_HF: 1493 switch (hfp_gsm_call_status()){ 1494 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1495 switch (hfp_gsm_callsetup_status()){ 1496 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1497 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1498 hfp_ag_set_callsetup_indicator(); 1499 hfp_ag_transfer_callsetup_state(); 1500 hfp_ag_trigger_reject_call(); 1501 log_info("HF Rejected Incoming call, AG terminate call"); 1502 break; 1503 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1504 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1505 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1506 hfp_ag_set_callsetup_indicator(); 1507 hfp_ag_transfer_callsetup_state(); 1508 log_info("AG terminate outgoing call process"); 1509 break; 1510 default: 1511 break; 1512 } 1513 break; 1514 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1515 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1516 hfp_ag_set_callsetup_indicator(); 1517 hfp_ag_set_call_indicator(); 1518 hfp_ag_trigger_terminate_call(); 1519 log_info("AG terminate call"); 1520 break; 1521 default: 1522 break; 1523 } 1524 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1525 break; 1526 1527 case HFP_AG_TERMINATE_CALL_BY_AG: 1528 switch (hfp_gsm_call_status()){ 1529 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1530 switch (hfp_gsm_callsetup_status()){ 1531 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1532 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1533 hfp_ag_set_callsetup_indicator(); 1534 hfp_ag_trigger_reject_call(); 1535 log_info("AG Rejected Incoming call, AG terminate call"); 1536 break; 1537 default: 1538 break; 1539 } 1540 break; 1541 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1542 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1543 hfp_ag_set_callsetup_indicator(); 1544 hfp_ag_set_call_indicator(); 1545 hfp_ag_trigger_terminate_call(); 1546 log_info("AG terminate call"); 1547 break; 1548 default: 1549 break; 1550 } 1551 break; 1552 case HFP_AG_CALL_DROPPED: 1553 switch (hfp_gsm_call_status()){ 1554 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1555 switch (hfp_gsm_callsetup_status()){ 1556 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1557 hfp_ag_stop_ringing(); 1558 log_info("Incoming call interrupted"); 1559 break; 1560 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1561 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1562 log_info("Outgoing call interrupted\n"); 1563 log_info("AG notify call dropped\n"); 1564 break; 1565 default: 1566 break; 1567 } 1568 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1569 hfp_ag_set_callsetup_indicator(); 1570 hfp_ag_transfer_callsetup_state(); 1571 hfp_ag_trigger_terminate_call(); 1572 break; 1573 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1574 if (hfp_ag_response_and_hold_active) { 1575 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1576 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1577 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1578 } 1579 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1580 hfp_ag_set_callsetup_indicator(); 1581 hfp_ag_set_call_indicator(); 1582 hfp_ag_trigger_terminate_call(); 1583 log_info("AG notify call dropped"); 1584 break; 1585 default: 1586 break; 1587 } 1588 break; 1589 1590 case HFP_AG_OUTGOING_CALL_INITIATED_BY_HF: 1591 // directly reject call if number of free slots is exceeded 1592 if (!hfp_gsm_call_possible()){ 1593 hfp_connection->send_error = 1; 1594 hfp_ag_run_for_context(hfp_connection); 1595 break; 1596 } 1597 1598 // note: number not used currently 1599 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1600 1601 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1602 1603 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1604 break; 1605 1606 case HFP_AG_OUTGOING_CALL_INITIATED_BY_AG: 1607 // directly reject call if number of free slots is exceeded 1608 if (!hfp_gsm_call_possible()) { 1609 // TODO: no error for user 1610 break; 1611 } 1612 switch (hfp_gsm_call_status()) { 1613 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1614 switch (hfp_gsm_callsetup_status()) { 1615 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1616 // note: number not used currently 1617 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, 0, 0, "1234567"); 1618 // init call state for all connections 1619 hfp_ag_trigger_outgoing_call(); 1620 // get first one and accept call 1621 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1622 if (hfp_connection) { 1623 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1624 } 1625 break; 1626 default: 1627 // TODO: no error for user 1628 break; 1629 } 1630 break; 1631 default: 1632 // TODO: no error for user 1633 break; 1634 } 1635 break; 1636 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1637 // directly reject call if number of free slots is exceeded 1638 if (!hfp_gsm_call_possible()){ 1639 hfp_connection->send_error = 1; 1640 hfp_ag_run_for_context(hfp_connection); 1641 break; 1642 } 1643 1644 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1645 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1646 1647 log_info("Redial last number"); 1648 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1649 1650 if (strlen(last_dialed_number) > 0){ 1651 log_info("Last number exists: accept call"); 1652 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1653 } else { 1654 log_info("log_infoLast number missing: reject call"); 1655 hfp_ag_handle_reject_outgoing_call(); 1656 } 1657 break; 1658 } 1659 case HFP_AG_OUTGOING_CALL_REJECTED: 1660 hfp_ag_handle_reject_outgoing_call(); 1661 break; 1662 1663 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1664 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1665 if (!hfp_connection){ 1666 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1667 break; 1668 } 1669 1670 hfp_connection->ok_pending = 1; 1671 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1672 break; 1673 } 1674 case HFP_AG_OUTGOING_CALL_RINGING: 1675 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1676 if (!hfp_connection){ 1677 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1678 break; 1679 } 1680 1681 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1682 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1683 hfp_ag_set_callsetup_indicator(); 1684 hfp_ag_transfer_callsetup_state(); 1685 break; 1686 1687 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1688 // get outgoing call 1689 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1690 if (!hfp_connection){ 1691 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1692 } 1693 if (!hfp_connection){ 1694 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1695 break; 1696 } 1697 1698 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1699 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1700 hfp_connection->call_state = HFP_CALL_ACTIVE; 1701 hfp_ag_set_callsetup_indicator(); 1702 hfp_ag_set_call_indicator(); 1703 hfp_ag_transfer_call_state(); 1704 hfp_ag_transfer_callsetup_state(); 1705 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1706 hfp_ag_set_callheld_indicator(); 1707 hfp_ag_transfer_callheld_state(); 1708 } 1709 break; 1710 } 1711 1712 case HFP_AG_CALL_HOLD_USER_BUSY: 1713 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1714 hfp_ag_set_callsetup_indicator(); 1715 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1716 hfp_connection->call_state = HFP_CALL_ACTIVE; 1717 log_info("AG: Call Waiting, User Busy"); 1718 break; 1719 1720 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1721 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1722 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1723 1724 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1725 if (call_held || call_setup_in_progress){ 1726 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1727 0, NULL); 1728 1729 } 1730 1731 if (call_setup_in_progress){ 1732 log_info("AG: Call Dropped, Accept new call"); 1733 hfp_ag_set_callsetup_indicator(); 1734 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1735 } else { 1736 log_info("AG: Call Dropped, Resume held call"); 1737 } 1738 if (call_held){ 1739 hfp_ag_set_callheld_indicator(); 1740 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1741 } 1742 1743 hfp_connection->call_state = HFP_CALL_ACTIVE; 1744 break; 1745 } 1746 1747 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1748 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1749 // only update if callsetup changed 1750 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1751 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1752 NULL); 1753 1754 if (call_setup_in_progress){ 1755 log_info("AG: Call on Hold, Accept new call"); 1756 hfp_ag_set_callsetup_indicator(); 1757 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1758 } else { 1759 log_info("AG: Swap calls"); 1760 } 1761 1762 hfp_ag_set_callheld_indicator(); 1763 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1764 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1765 hfp_connection->call_state = HFP_CALL_ACTIVE; 1766 break; 1767 } 1768 1769 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1770 // Adds a held call to the conversation. 1771 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1772 log_info("AG: Join 3-way-call"); 1773 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1774 hfp_ag_set_callheld_indicator(); 1775 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1776 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1777 } 1778 hfp_connection->call_state = HFP_CALL_ACTIVE; 1779 break; 1780 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1781 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1782 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1783 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1784 hfp_ag_set_call_indicator(); 1785 hfp_ag_set_callheld_indicator(); 1786 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1787 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1788 hfp_connection->call_state = HFP_CALL_IDLE; 1789 break; 1790 1791 default: 1792 break; 1793 } 1794 1795 1796 } 1797 1798 1799 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1800 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1801 if (!active_call) return; 1802 1803 int idx = active_call->index; 1804 hfp_enhanced_call_dir_t dir = active_call->direction; 1805 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1806 hfp_enhanced_call_mode_t mode = active_call->mode; 1807 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1808 uint8_t type = active_call->clip_type; 1809 char * number = active_call->clip_number; 1810 1811 char buffer[100]; 1812 // TODO: check length of a buffer, to fit the MTU 1813 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1814 if (number){ 1815 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1816 } 1817 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1818 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, 1819 mode, mpty, type, number); 1820 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1821 } 1822 1823 1824 // sends pending command, returns if command was sent 1825 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1826 1827 if (hfp_connection->send_status_of_current_calls){ 1828 hfp_connection->ok_pending = 0; 1829 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1830 hfp_connection->next_call_index++; 1831 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1832 return 1; 1833 } else { 1834 // 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 1835 hfp_connection->next_call_index = 0; 1836 hfp_connection->ok_pending = 1; 1837 hfp_connection->send_status_of_current_calls = 0; 1838 } 1839 } 1840 1841 if (hfp_connection->ag_notify_incoming_call_waiting){ 1842 hfp_connection->ag_notify_incoming_call_waiting = 0; 1843 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1844 return 1; 1845 } 1846 1847 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1848 hfp_connection->ok_pending = 0; 1849 hfp_connection->send_error = 0; 1850 hfp_connection->command = HFP_CMD_NONE; 1851 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1852 return 1; 1853 } 1854 1855 if (hfp_connection->send_error){ 1856 hfp_connection->send_error = 0; 1857 hfp_connection->command = HFP_CMD_NONE; 1858 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1859 return 1; 1860 } 1861 1862 // note: before update AG indicators and ok_pending 1863 if (hfp_connection->send_response_and_hold_status){ 1864 int status = hfp_connection->send_response_and_hold_status - 1; 1865 hfp_connection->send_response_and_hold_status = 0; 1866 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1867 return 1; 1868 } 1869 1870 if (hfp_connection->ok_pending){ 1871 hfp_connection->ok_pending = 0; 1872 hfp_connection->command = HFP_CMD_NONE; 1873 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1874 return 1; 1875 } 1876 1877 // update AG indicators 1878 if (hfp_connection->ag_indicators_status_update_bitmap){ 1879 int i; 1880 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1881 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1882 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1883 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1884 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1885 break; 1886 } 1887 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1888 return 1; 1889 } 1890 } 1891 } 1892 1893 if (hfp_connection->ag_send_no_carrier){ 1894 hfp_connection->ag_send_no_carrier = false; 1895 hfp_ag_send_no_carrier(hfp_connection->rfcomm_cid); 1896 return 1; 1897 } 1898 1899 if (hfp_connection->ag_ring){ 1900 hfp_connection->ag_ring = 0; 1901 hfp_connection->command = HFP_CMD_NONE; 1902 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1903 return 1; 1904 } 1905 1906 if (hfp_connection->ag_send_clip){ 1907 hfp_connection->ag_send_clip = 0; 1908 hfp_connection->command = HFP_CMD_NONE; 1909 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1910 return 1; 1911 } 1912 1913 if (hfp_connection->send_phone_number_for_voice_tag){ 1914 hfp_connection->send_phone_number_for_voice_tag = 0; 1915 hfp_connection->command = HFP_CMD_NONE; 1916 hfp_connection->ok_pending = 1; 1917 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1918 return 1; 1919 } 1920 1921 if (hfp_connection->send_subscriber_number){ 1922 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1923 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1924 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1925 } else { 1926 hfp_connection->send_subscriber_number = 0; 1927 hfp_connection->next_subscriber_number_to_send = 0; 1928 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1929 } 1930 hfp_connection->command = HFP_CMD_NONE; 1931 return 1; 1932 } 1933 1934 if (hfp_connection->send_microphone_gain){ 1935 hfp_connection->send_microphone_gain = 0; 1936 hfp_connection->command = HFP_CMD_NONE; 1937 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1938 return 1; 1939 } 1940 1941 if (hfp_connection->send_speaker_gain){ 1942 hfp_connection->send_speaker_gain = 0; 1943 hfp_connection->command = HFP_CMD_NONE; 1944 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1945 return 1; 1946 } 1947 1948 if (hfp_connection->send_ag_status_indicators){ 1949 hfp_connection->send_ag_status_indicators = 0; 1950 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1951 return 1; 1952 } 1953 1954 return 0; 1955 } 1956 1957 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1958 1959 btstack_assert(hfp_connection != NULL); 1960 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1961 1962 // during SDP query, RFCOMM CID is not set 1963 if (hfp_connection->rfcomm_cid == 0) return; 1964 1965 // assert command could be sent 1966 if (hci_can_send_command_packet_now() == 0) return; 1967 1968 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 1969 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 1970 hfp_connection->release_audio_connection = 0; 1971 gap_disconnect(hfp_connection->sco_handle); 1972 return; 1973 } 1974 1975 #ifdef ENABLE_CC256X_ASSISTED_HFP 1976 // WBS Disassociate 1977 if (hfp_connection->cc256x_send_wbs_disassociate){ 1978 hfp_connection->cc256x_send_wbs_disassociate = false; 1979 hci_send_cmd(&hci_ti_wbs_disassociate); 1980 return; 1981 } 1982 // Write Codec Config 1983 if (hfp_connection->cc256x_send_write_codec_config){ 1984 hfp_connection->cc256x_send_write_codec_config = false; 1985 hfp_cc256x_write_codec_config(hfp_connection); 1986 return; 1987 } 1988 // WBS Associate 1989 if (hfp_connection->cc256x_send_wbs_associate){ 1990 hfp_connection->cc256x_send_wbs_associate = false; 1991 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 1992 return; 1993 } 1994 #endif 1995 #ifdef ENABLE_BCM_PCM_WBS 1996 // Enable WBS 1997 if (hfp_connection->bcm_send_enable_wbs){ 1998 hfp_connection->bcm_send_enable_wbs = false; 1999 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 2000 return; 2001 } 2002 // Write I2S/PCM params 2003 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 2004 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 2005 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 2006 return; 2007 } 2008 // Disable WBS 2009 if (hfp_connection->bcm_send_disable_wbs){ 2010 hfp_connection->bcm_send_disable_wbs = false; 2011 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 2012 return; 2013 } 2014 #endif 2015 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 2016 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 2017 hfp_finalize_connection_context(hfp_connection); 2018 return; 2019 } 2020 #endif 2021 2022 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 2023 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 2024 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2025 return; 2026 } 2027 2028 int cmd_sent = hfp_ag_send_commands(hfp_connection); 2029 2030 if (!cmd_sent){ 2031 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 2032 } 2033 2034 if (!cmd_sent){ 2035 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 2036 } 2037 2038 if (!cmd_sent){ 2039 cmd_sent = hfp_ag_voice_recognition_state_machine(hfp_connection); 2040 } 2041 2042 if (!cmd_sent){ 2043 cmd_sent = call_setup_state_machine(hfp_connection); 2044 } 2045 2046 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 2047 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 2048 switch (hfp_connection->codecs_state){ 2049 case HFP_CODECS_IDLE: 2050 case HFP_CODECS_RECEIVED_LIST: 2051 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2052 case HFP_CODECS_ERROR: 2053 hfp_connection->trigger_codec_exchange = 0; 2054 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2055 break; 2056 default: 2057 break; 2058 } 2059 } 2060 2061 if (!cmd_sent){ 2062 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 2063 } 2064 2065 2066 // disconnect 2067 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 2068 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 2069 rfcomm_disconnect(hfp_connection->rfcomm_cid); 2070 } 2071 2072 if (cmd_sent){ 2073 hfp_connection->command = HFP_CMD_NONE; 2074 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2075 } 2076 } 2077 2078 static int hfp_parser_is_end_of_line(uint8_t byte){ 2079 return (byte == '\n') || (byte == '\r'); 2080 } 2081 2082 static void hfp_ag_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 2083 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 2084 if (!hfp_connection) return; 2085 if (size < 1) return; 2086 2087 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 2088 #ifdef ENABLE_HFP_AT_MESSAGES 2089 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 2090 #endif 2091 2092 // process messages byte-wise 2093 int pos; 2094 for (pos = 0; pos < size ; pos++){ 2095 hfp_parse(hfp_connection, packet[pos], 0); 2096 2097 // parse until end of line 2098 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 2099 2100 hfp_generic_status_indicator_t * indicator; 2101 switch(hfp_connection->command){ 2102 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 2103 // dealt with in hfp_ag_voice_recognition_state_machine 2104 break; 2105 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 2106 if (hfp_ag_response_and_hold_active){ 2107 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 2108 } 2109 hfp_connection->ok_pending = 1; 2110 break; 2111 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 2112 switch(hfp_connection->ag_response_and_hold_action){ 2113 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 2114 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 2115 break; 2116 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 2117 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 2118 break; 2119 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 2120 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 2121 break; 2122 default: 2123 break; 2124 } 2125 hfp_connection->ok_pending = 1; 2126 break; 2127 case HFP_CMD_HF_INDICATOR_STATUS: 2128 hfp_connection->command = HFP_CMD_NONE; 2129 if (hfp_connection->parser_indicator_index < hfp_generic_status_indicators_nr){ 2130 indicator = &hfp_generic_status_indicators[hfp_connection->parser_indicator_index]; 2131 } else { 2132 hfp_connection->send_error = 1; 2133 break; 2134 } 2135 switch (indicator->uuid){ 2136 case 1: // enhanced security 2137 if (hfp_connection->parser_indicator_value > 1) { 2138 hfp_connection->send_error = 1; 2139 return; 2140 } 2141 log_info("HF Indicator 'enhanced security' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2142 break; 2143 case 2: // battery level 2144 if (hfp_connection->parser_indicator_value > 100){ 2145 hfp_connection->send_error = 1; 2146 return; 2147 } 2148 log_info("HF Indicator 'battery' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2149 break; 2150 default: 2151 log_info("HF Indicator unknown set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2152 break; 2153 } 2154 hfp_connection->ok_pending = 1; 2155 break; 2156 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 2157 // expected by SLC state machine 2158 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 2159 hfp_connection->send_ag_indicators_segment = 0; 2160 hfp_connection->send_ag_status_indicators = 1; 2161 break; 2162 case HFP_CMD_LIST_CURRENT_CALLS: 2163 hfp_connection->command = HFP_CMD_NONE; 2164 hfp_connection->next_call_index = 0; 2165 hfp_connection->send_status_of_current_calls = 1; 2166 break; 2167 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 2168 if (subscriber_numbers_count == 0){ 2169 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2170 break; 2171 } 2172 hfp_connection->next_subscriber_number_to_send = 0; 2173 hfp_connection->send_subscriber_number = 1; 2174 break; 2175 case HFP_CMD_TRANSMIT_DTMF_CODES: 2176 { 2177 hfp_connection->command = HFP_CMD_NONE; 2178 char buffer[2]; 2179 buffer[0] = (char) hfp_connection->ag_dtmf_code; 2180 buffer[1] = 0; 2181 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 2182 break; 2183 } 2184 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 2185 hfp_connection->command = HFP_CMD_NONE; 2186 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 2187 break; 2188 case HFP_CMD_TURN_OFF_EC_AND_NR: 2189 hfp_connection->command = HFP_CMD_NONE; 2190 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 2191 hfp_connection->ok_pending = 1; 2192 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 2193 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 2194 } else { 2195 hfp_connection->send_error = 1; 2196 } 2197 break; 2198 case HFP_CMD_CALL_ANSWERED: 2199 hfp_connection->command = HFP_CMD_NONE; 2200 log_info("HFP: ATA"); 2201 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 2202 break; 2203 case HFP_CMD_HANG_UP_CALL: 2204 hfp_connection->command = HFP_CMD_NONE; 2205 hfp_connection->ok_pending = 1; 2206 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 2207 break; 2208 case HFP_CMD_CALL_HOLD: { 2209 hfp_connection->command = HFP_CMD_NONE; 2210 hfp_connection->ok_pending = 1; 2211 2212 switch (hfp_connection->ag_call_hold_action){ 2213 case 0: 2214 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2215 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2216 break; 2217 case 1: 2218 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2219 // Where both a held and a waiting call exist, the above procedures shall apply to the 2220 // waiting call (i.e., not to the held call) in conflicting situation. 2221 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2222 break; 2223 case 2: 2224 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2225 // Where both a held and a waiting call exist, the above procedures shall apply to the 2226 // waiting call (i.e., not to the held call) in conflicting situation. 2227 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2228 break; 2229 case 3: 2230 // Adds a held call to the conversation. 2231 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2232 break; 2233 case 4: 2234 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2235 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2236 break; 2237 default: 2238 break; 2239 } 2240 hfp_connection->call_index = 0; 2241 break; 2242 } 2243 case HFP_CMD_CALL_PHONE_NUMBER: 2244 hfp_connection->command = HFP_CMD_NONE; 2245 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, hfp_connection); 2246 break; 2247 case HFP_CMD_REDIAL_LAST_NUMBER: 2248 hfp_connection->command = HFP_CMD_NONE; 2249 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2250 break; 2251 case HFP_CMD_ENABLE_CLIP: 2252 hfp_connection->command = HFP_CMD_NONE; 2253 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2254 hfp_connection->ok_pending = 1; 2255 break; 2256 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2257 hfp_connection->command = HFP_CMD_NONE; 2258 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2259 hfp_connection->ok_pending = 1; 2260 break; 2261 case HFP_CMD_SET_SPEAKER_GAIN: 2262 hfp_connection->command = HFP_CMD_NONE; 2263 hfp_connection->ok_pending = 1; 2264 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2265 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2266 break; 2267 case HFP_CMD_SET_MICROPHONE_GAIN: 2268 hfp_connection->command = HFP_CMD_NONE; 2269 hfp_connection->ok_pending = 1; 2270 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2271 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2272 break; 2273 default: 2274 break; 2275 } 2276 } 2277 } 2278 2279 static void hfp_ag_run(void){ 2280 btstack_linked_list_iterator_t it; 2281 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2282 while (btstack_linked_list_iterator_has_next(&it)){ 2283 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2284 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2285 hfp_ag_run_for_context(hfp_connection); 2286 } 2287 } 2288 2289 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2290 hfp_connection_t * hfp_connection = NULL; 2291 switch (packet_type){ 2292 case RFCOMM_DATA_PACKET: 2293 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 2294 2295 hfp_ag_handle_rfcomm_data(hfp_connection, packet, size); 2296 hfp_ag_run_for_context(hfp_connection); 2297 return; 2298 case HCI_EVENT_PACKET: 2299 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2300 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2301 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2302 return; 2303 } 2304 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2305 break; 2306 default: 2307 break; 2308 } 2309 2310 hfp_ag_run(); 2311 } 2312 2313 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2314 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2315 hfp_ag_run(); 2316 } 2317 2318 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2319 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2320 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2321 return; 2322 } 2323 int i; 2324 hfp_codecs_nr = codecs_nr; 2325 for (i=0; i < codecs_nr; i++){ 2326 hfp_codecs[i] = codecs[i]; 2327 } 2328 } 2329 2330 void hfp_ag_init_supported_features(uint32_t supported_features){ 2331 hfp_supported_features = supported_features; 2332 } 2333 2334 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2335 hfp_ag_indicators_nr = ag_indicators_nr; 2336 (void)memcpy(hfp_ag_indicators, ag_indicators, 2337 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2338 } 2339 2340 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2341 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2342 hfp_generic_status_indicators_nr = hf_indicators_nr; 2343 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2344 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2345 } 2346 2347 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2348 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2349 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2350 call_hold_services_nr * sizeof(char *)); 2351 } 2352 2353 2354 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2355 2356 hfp_init(); 2357 hfp_ag_call_hold_services_nr = 0; 2358 hfp_ag_response_and_hold_active = 0; 2359 hfp_ag_indicators_nr = 0; 2360 hfp_codecs_nr = 0; 2361 hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2362 subscriber_numbers = NULL; 2363 subscriber_numbers_count = 0; 2364 2365 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2366 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2367 2368 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2369 2370 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2371 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2372 2373 hfp_gsm_init(); 2374 } 2375 2376 void hfp_ag_deinit(void){ 2377 hfp_deinit(); 2378 hfp_gsm_deinit(); 2379 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2380 (void) memset(&hfp_ag_callback, 0, sizeof(btstack_packet_handler_t)); 2381 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2382 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2383 } 2384 2385 uint8_t hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2386 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2387 } 2388 2389 uint8_t hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2390 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2391 if (!hfp_connection){ 2392 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2393 } 2394 2395 hfp_trigger_release_service_level_connection(hfp_connection); 2396 hfp_ag_run_for_context(hfp_connection); 2397 return ERROR_CODE_SUCCESS; 2398 } 2399 2400 uint8_t hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2401 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2402 if (!hfp_connection){ 2403 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2404 } 2405 2406 hfp_connection->extended_audio_gateway_error = 0; 2407 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2408 return ERROR_CODE_COMMAND_DISALLOWED; 2409 } 2410 2411 hfp_connection->extended_audio_gateway_error = error; 2412 hfp_ag_run_for_context(hfp_connection); 2413 return ERROR_CODE_SUCCESS; 2414 } 2415 2416 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2417 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 2418 return ERROR_CODE_COMMAND_DISALLOWED; 2419 } 2420 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 2421 return ERROR_CODE_COMMAND_DISALLOWED; 2422 } 2423 2424 hfp_connection->establish_audio_connection = 1; 2425 if (!has_codec_negotiation_feature(hfp_connection)){ 2426 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2427 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2428 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2429 // now, pick link settings 2430 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2431 #ifdef ENABLE_CC256X_ASSISTED_HFP 2432 hfp_cc256x_prepare_for_sco(hfp_connection); 2433 #endif 2434 return ERROR_CODE_SUCCESS; 2435 } 2436 2437 uint8_t i; 2438 bool codec_was_in_use = false; 2439 bool better_codec_can_be_used = false; 2440 2441 for (i = 0; i<hfp_connection->remote_codecs_nr; i++){ 2442 if (hfp_connection->negotiated_codec == hfp_connection->remote_codecs[i]){ 2443 codec_was_in_use = true; 2444 } else if (hfp_connection->negotiated_codec < hfp_connection->remote_codecs[i]){ 2445 better_codec_can_be_used = true; 2446 } 2447 } 2448 2449 if (!codec_was_in_use || better_codec_can_be_used){ 2450 hfp_connection->trigger_codec_exchange = 1; 2451 hfp_connection->codecs_state = HFP_CODECS_IDLE; 2452 } 2453 return ERROR_CODE_SUCCESS; 2454 } 2455 2456 uint8_t hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2457 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2458 if (!hfp_connection){ 2459 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2460 } 2461 uint8_t status = hfp_ag_setup_audio_connection(hfp_connection); 2462 if (status != ERROR_CODE_SUCCESS){ 2463 return status; 2464 } 2465 hfp_ag_run_for_context(hfp_connection); 2466 return ERROR_CODE_SUCCESS; 2467 } 2468 2469 uint8_t hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2470 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2471 if (!hfp_connection){ 2472 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2473 } 2474 2475 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 2476 if (!hfp_connection->ag_audio_connection_opened_after_vra){ 2477 return ERROR_CODE_COMMAND_DISALLOWED; 2478 } 2479 } 2480 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 2481 if (status == ERROR_CODE_SUCCESS){ 2482 hfp_ag_run_for_context(hfp_connection); 2483 } 2484 return status; 2485 } 2486 2487 /** 2488 * @brief Enable in-band ring tone 2489 */ 2490 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2491 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2492 return; 2493 } 2494 2495 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2496 2497 btstack_linked_list_iterator_t it; 2498 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2499 while (btstack_linked_list_iterator_has_next(&it)){ 2500 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2501 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2502 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2503 hfp_ag_run_for_context(hfp_connection); 2504 } 2505 } 2506 2507 /** 2508 * @brief Called from GSM 2509 */ 2510 void hfp_ag_incoming_call(void){ 2511 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2512 } 2513 2514 void hfp_ag_outgoing_call_initiated(const char * number) { 2515 UNUSED(number); 2516 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, NULL); 2517 } 2518 2519 /** 2520 * @brief number is stored. 2521 */ 2522 void hfp_ag_set_clip(uint8_t type, const char * number){ 2523 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2524 } 2525 2526 void hfp_ag_call_dropped(void){ 2527 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2528 } 2529 2530 // call from AG UI 2531 void hfp_ag_answer_incoming_call(void){ 2532 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2533 } 2534 2535 void hfp_ag_join_held_call(void){ 2536 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2537 } 2538 2539 void hfp_ag_terminate_call(void){ 2540 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2541 } 2542 2543 void hfp_ag_outgoing_call_ringing(void){ 2544 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2545 } 2546 2547 void hfp_ag_outgoing_call_established(void){ 2548 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2549 } 2550 2551 void hfp_ag_outgoing_call_rejected(void){ 2552 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2553 } 2554 2555 void hfp_ag_outgoing_call_accepted(void){ 2556 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2557 } 2558 2559 void hfp_ag_hold_incoming_call(void){ 2560 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2561 } 2562 2563 void hfp_ag_accept_held_incoming_call(void) { 2564 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2565 } 2566 2567 void hfp_ag_reject_held_incoming_call(void){ 2568 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2569 } 2570 2571 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2572 int indicator_index = get_ag_indicator_index_for_name(name); 2573 if (indicator_index < 0) return; 2574 hfp_ag_indicators[indicator_index].status = value; 2575 2576 btstack_linked_list_iterator_t it; 2577 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2578 while (btstack_linked_list_iterator_has_next(&it)){ 2579 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2580 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2581 if (!hfp_connection->ag_indicators[indicator_index].enabled) { 2582 log_info("Requested AG indicator '%s' update to %u, but it is not enabled", hfp_ag_indicators[indicator_index].name, value); 2583 continue; 2584 } 2585 log_info("AG indicator '%s' changed to %u, request transfer status", hfp_ag_indicators[indicator_index].name, value); 2586 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2587 hfp_ag_run_for_context(hfp_connection); 2588 } 2589 } 2590 2591 uint8_t hfp_ag_set_registration_status(int registration_status){ 2592 if ((registration_status < 0) || (registration_status > 1)){ 2593 return ERROR_CODE_COMMAND_DISALLOWED; 2594 } 2595 2596 if ( (registration_status == 0) && (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 2597 2598 // if network goes away wihle a call is active: 2599 // - the call gets dropped 2600 // - we send NO CARRIER 2601 // NOTE: the CALL=0 has to be sent before NO CARRIER 2602 2603 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2604 2605 btstack_linked_list_iterator_t it; 2606 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2607 while (btstack_linked_list_iterator_has_next(&it)){ 2608 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2609 hfp_connection->ag_send_no_carrier = true; 2610 } 2611 } 2612 hfp_ag_set_ag_indicator("service", registration_status); 2613 return ERROR_CODE_SUCCESS; 2614 } 2615 2616 uint8_t hfp_ag_set_signal_strength(int signal_strength){ 2617 if ((signal_strength < 0) || (signal_strength > 5)){ 2618 return ERROR_CODE_COMMAND_DISALLOWED; 2619 } 2620 2621 hfp_ag_set_ag_indicator("signal", signal_strength); 2622 return ERROR_CODE_SUCCESS; 2623 } 2624 2625 uint8_t hfp_ag_set_roaming_status(int roaming_status){ 2626 if ((roaming_status < 0) || (roaming_status > 1)){ 2627 return ERROR_CODE_COMMAND_DISALLOWED; 2628 } 2629 2630 hfp_ag_set_ag_indicator("roam", roaming_status); 2631 return ERROR_CODE_SUCCESS; 2632 } 2633 2634 uint8_t hfp_ag_set_battery_level(int battery_level){ 2635 if ((battery_level < 0) || (battery_level > 5)){ 2636 return ERROR_CODE_COMMAND_DISALLOWED; 2637 } 2638 hfp_ag_set_ag_indicator("battchg", battery_level); 2639 return ERROR_CODE_SUCCESS; 2640 } 2641 2642 uint8_t hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle){ 2643 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2644 if (!hfp_connection){ 2645 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2646 } 2647 uint8_t status = hfp_ag_can_activate_voice_recognition_for_connection(hfp_connection); 2648 if (status == ERROR_CODE_SUCCESS){ 2649 hfp_connection->ag_activate_voice_recognition_value = 1; 2650 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 2651 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2652 hfp_connection->ag_audio_connection_opened_after_vra = hfp_ag_is_audio_connection_active(hfp_connection); 2653 hfp_ag_run_for_context(hfp_connection); 2654 } 2655 return status; 2656 } 2657 2658 uint8_t hfp_ag_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2659 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2660 if (!hfp_connection){ 2661 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2662 } 2663 uint8_t status = hfp_ag_can_deactivate_voice_recognition_for_connection(hfp_connection); 2664 if (status == ERROR_CODE_SUCCESS){ 2665 hfp_connection->ag_activate_voice_recognition_value = 0; 2666 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2667 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2668 hfp_ag_run_for_context(hfp_connection); 2669 } 2670 return status; 2671 } 2672 2673 2674 uint8_t hfp_ag_enhanced_voice_recognition_activate(hci_con_handle_t acl_handle){ 2675 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2676 return ERROR_CODE_COMMAND_DISALLOWED; 2677 } 2678 2679 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2680 if (!hfp_connection){ 2681 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2682 } 2683 2684 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2685 return ERROR_CODE_COMMAND_DISALLOWED; 2686 } 2687 2688 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2689 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2690 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 2691 hfp_ag_run_for_context(hfp_connection); 2692 return ERROR_CODE_SUCCESS; 2693 } 2694 2695 uint8_t hfp_ag_enhanced_voice_recognition_deactivate(hci_con_handle_t acl_handle){ 2696 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2697 return ERROR_CODE_COMMAND_DISALLOWED; 2698 } 2699 2700 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2701 if (!hfp_connection){ 2702 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2703 } 2704 2705 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2706 return ERROR_CODE_COMMAND_DISALLOWED; 2707 } 2708 2709 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2710 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2711 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_OFF; 2712 hfp_ag_run_for_context(hfp_connection); 2713 return ERROR_CODE_SUCCESS; 2714 } 2715 2716 uint8_t hfp_ag_enhanced_voice_recognition_state(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state){ 2717 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2718 return ERROR_CODE_COMMAND_DISALLOWED; 2719 } 2720 2721 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2722 if (!hfp_connection){ 2723 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2724 } 2725 2726 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2727 return ERROR_CODE_COMMAND_DISALLOWED; 2728 } 2729 2730 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2731 hfp_connection->ag_vra_state = state; 2732 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_STATUS; 2733 hfp_ag_run_for_context(hfp_connection); 2734 return ERROR_CODE_SUCCESS; 2735 } 2736 2737 uint8_t hfp_ag_enhanced_voice_recognition_starting_sound(hci_con_handle_t acl_handle){ 2738 return hfp_ag_enhanced_voice_recognition_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_SENDING_AUDIO_TO_HF); 2739 } 2740 uint8_t hfp_ag_enhanced_voice_recognition_ready_for_input(hci_con_handle_t acl_handle){ 2741 return hfp_ag_enhanced_voice_recognition_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_READY_TO_ACCEPT_AUDIO_INPUT); 2742 } 2743 uint8_t hfp_ag_enhanced_voice_recognition_processing_input(hci_con_handle_t acl_handle){ 2744 return hfp_ag_enhanced_voice_recognition_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_PROCESSING_AUDIO_INPUT); 2745 } 2746 2747 uint8_t hfp_ag_enhanced_voice_recognition_message(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state, hfp_voice_recognition_message_t msg){ 2748 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2749 return ERROR_CODE_COMMAND_DISALLOWED; 2750 } 2751 2752 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2753 if (!hfp_connection){ 2754 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2755 } 2756 2757 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2758 return ERROR_CODE_COMMAND_DISALLOWED; 2759 } 2760 2761 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2762 hfp_connection->ag_vra_state = state; 2763 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_MSG; 2764 hfp_connection->ag_msg = msg; 2765 hfp_ag_run_for_context(hfp_connection); 2766 return ERROR_CODE_SUCCESS; 2767 } 2768 2769 uint8_t hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2770 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2771 if (!hfp_connection){ 2772 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2773 } 2774 2775 if ((gain < 0) || (gain > 15)){ 2776 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2777 return ERROR_CODE_COMMAND_DISALLOWED; 2778 } 2779 2780 if (hfp_connection->microphone_gain != gain){ 2781 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2782 hfp_connection->microphone_gain = gain; 2783 hfp_connection->send_microphone_gain = 1; 2784 } 2785 hfp_ag_run_for_context(hfp_connection); 2786 return ERROR_CODE_SUCCESS; 2787 } 2788 2789 uint8_t hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 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 2795 if ((gain < 0) || (gain > 15)){ 2796 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2797 return ERROR_CODE_COMMAND_DISALLOWED; 2798 } 2799 2800 if (hfp_connection->speaker_gain != gain){ 2801 hfp_connection->speaker_gain = gain; 2802 hfp_connection->send_speaker_gain = 1; 2803 } 2804 hfp_ag_run_for_context(hfp_connection); 2805 return ERROR_CODE_SUCCESS; 2806 } 2807 2808 uint8_t hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2809 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2810 if (!hfp_connection){ 2811 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2812 } 2813 2814 hfp_ag_set_clip(0, number); 2815 hfp_connection->send_phone_number_for_voice_tag = 1; 2816 return ERROR_CODE_SUCCESS; 2817 } 2818 2819 uint8_t hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2820 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2821 if (!hfp_connection){ 2822 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2823 } 2824 2825 hfp_connection->send_error = 1; 2826 return ERROR_CODE_SUCCESS; 2827 } 2828 2829 uint8_t hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2830 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2831 if (!hfp_connection){ 2832 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2833 } 2834 2835 hfp_connection->ok_pending = 1; 2836 return ERROR_CODE_SUCCESS; 2837 } 2838 2839 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2840 subscriber_numbers = numbers; 2841 subscriber_numbers_count = numbers_count; 2842 } 2843 2844 void hfp_ag_clear_last_dialed_number(void){ 2845 hfp_gsm_clear_last_dialed_number(); 2846 } 2847 2848 void hfp_ag_set_last_dialed_number(const char * number){ 2849 hfp_gsm_set_last_dialed_number(number); 2850 } 2851 2852 uint8_t hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2853 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2854 if (!hfp_connection){ 2855 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2856 } 2857 2858 if (!hfp_connection->call_waiting_notification_enabled){ 2859 return ERROR_CODE_COMMAND_DISALLOWED; 2860 } 2861 2862 hfp_connection->ag_notify_incoming_call_waiting = 1; 2863 hfp_ag_run_for_context(hfp_connection); 2864 return ERROR_CODE_SUCCESS; 2865 } 2866 2867 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){ 2868 if (!name){ 2869 name = default_hfp_ag_service_name; 2870 } 2871 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2872 2873 /* 2874 * 0x01 – Ability to reject a call 2875 * 0x00 – No ability to reject a call 2876 */ 2877 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2878 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2879 2880 // Construct SupportedFeatures for SDP bitmap: 2881 // 2882 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2883 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2884 // 2885 // Wide band speech (bit 5) requires Codec negotiation 2886 // 2887 uint16_t sdp_features = supported_features & 0x1f; 2888 if ( (wide_band_speech == 1) && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2889 sdp_features |= 1 << 5; 2890 } 2891 2892 if (supported_features & (1 << HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2893 sdp_features |= 1 << 6; 2894 } 2895 2896 if (supported_features & (1 << HFP_AGSF_VOICE_RECOGNITION_TEXT)){ 2897 sdp_features |= 1 << 7; 2898 } 2899 2900 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2901 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2902 } 2903 2904 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2905 btstack_assert(callback != NULL); 2906 2907 hfp_ag_callback = callback; 2908 hfp_set_ag_callback(callback); 2909 } 2910