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 if (hfp_connection->release_audio_connection){ 938 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 939 hfp_connection->release_audio_connection = 0; 940 gap_disconnect(hfp_connection->sco_handle); 941 return 1; 942 } 943 944 // accept incoming audio connection (codec negotiation is not used) 945 if (hfp_connection->accept_sco){ 946 // notify about codec selection if not done already 947 if (hfp_connection->negotiated_codec == 0){ 948 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 949 } 950 // 951 bool incoming_eSCO = hfp_connection->accept_sco == 2; 952 hfp_connection->accept_sco = 0; 953 hfp_connection->state = HFP_W4_SCO_CONNECTED; 954 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 955 return 1; 956 } 957 958 // run codecs exchange 959 int sent = codecs_exchange_state_machine(hfp_connection); 960 if (sent) return 1; 961 962 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 963 if (hfp_connection->establish_audio_connection){ 964 hfp_connection->state = HFP_W4_SCO_CONNECTED; 965 hfp_connection->establish_audio_connection = 0; 966 hfp_setup_synchronous_connection(hfp_connection); 967 return 1; 968 } 969 return 0; 970 } 971 972 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 973 btstack_linked_list_iterator_t it; 974 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 975 976 while (btstack_linked_list_iterator_has_next(&it)){ 977 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 978 if ( & hfp_connection->hfp_timeout == ts) { 979 return hfp_connection; 980 } 981 } 982 return NULL; 983 } 984 985 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 986 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 987 if (!hfp_connection) return; 988 989 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 990 hfp_connection->ag_ring = 1; 991 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 992 993 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 994 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 995 996 hfp_ag_run_for_context(hfp_connection); 997 } 998 999 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 1000 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 1001 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 1002 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 1003 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 1004 } 1005 1006 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 1007 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 1008 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 1009 } 1010 1011 static void hfp_ag_set_callsetup_indicator(void){ 1012 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1013 if (!indicator){ 1014 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1015 return; 1016 }; 1017 indicator->status = hfp_gsm_callsetup_status(); 1018 } 1019 1020 static void hfp_ag_set_callheld_indicator(void){ 1021 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1022 if (!indicator){ 1023 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1024 return; 1025 }; 1026 indicator->status = hfp_gsm_callheld_status(); 1027 } 1028 1029 // 1030 // transitition implementations for hfp_ag_call_state_machine 1031 // 1032 1033 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 1034 if (use_in_band_tone()){ 1035 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 1036 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1037 } else { 1038 hfp_timeout_start(hfp_connection); 1039 hfp_connection->ag_ring = 1; 1040 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1041 hfp_connection->call_state = HFP_CALL_RINGING; 1042 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1043 } 1044 } 1045 1046 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 1047 hfp_connection->ag_ring = 0; 1048 hfp_connection->ag_send_clip = 0; 1049 hfp_timeout_stop(hfp_connection); 1050 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 1051 } 1052 1053 static void hfp_ag_trigger_incoming_call(void){ 1054 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 1055 if (indicator_index < 0) return; 1056 1057 btstack_linked_list_iterator_t it; 1058 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1059 while (btstack_linked_list_iterator_has_next(&it)){ 1060 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1061 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1062 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1063 if (hfp_connection->call_state == HFP_CALL_IDLE){ 1064 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1065 hfp_ag_hf_start_ringing(hfp_connection); 1066 } 1067 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 1068 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 1069 } 1070 hfp_ag_run_for_context(hfp_connection); 1071 } 1072 } 1073 1074 static void hfp_ag_trigger_outgoing_call(void){ 1075 btstack_linked_list_iterator_t it; 1076 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1077 while (btstack_linked_list_iterator_has_next(&it)){ 1078 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1079 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1080 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1081 if (hfp_connection->call_state == HFP_CALL_IDLE){ 1082 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1083 } 1084 } 1085 } 1086 1087 static void hfp_ag_handle_outgoing_call_accepted(hfp_connection_t * hfp_connection){ 1088 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1089 1090 // trigger callsetup to be 1091 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1092 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1093 1094 int indicator_index ; 1095 1096 hfp_ag_set_callsetup_indicator(); 1097 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1098 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1099 1100 // put current call on hold if active 1101 if (put_call_on_hold){ 1102 log_info("AG putting current call on hold for new outgoing call"); 1103 hfp_ag_set_callheld_indicator(); 1104 indicator_index = get_ag_indicator_index_for_name("callheld"); 1105 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1106 } 1107 1108 // start audio if needed 1109 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1110 } 1111 1112 static void hfp_ag_transfer_indicator(const char * name){ 1113 int indicator_index = get_ag_indicator_index_for_name(name); 1114 if (indicator_index < 0) return; 1115 1116 btstack_linked_list_iterator_t it; 1117 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1118 while (btstack_linked_list_iterator_has_next(&it)){ 1119 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1120 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1121 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1122 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1123 hfp_ag_run_for_context(hfp_connection); 1124 } 1125 } 1126 1127 static void hfp_ag_transfer_callsetup_state(void){ 1128 hfp_ag_transfer_indicator("callsetup"); 1129 } 1130 1131 static void hfp_ag_transfer_call_state(void){ 1132 hfp_ag_transfer_indicator("call"); 1133 } 1134 1135 static void hfp_ag_transfer_callheld_state(void){ 1136 hfp_ag_transfer_indicator("callheld"); 1137 } 1138 1139 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 1140 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1141 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1142 1143 btstack_linked_list_iterator_t it; 1144 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1145 while (btstack_linked_list_iterator_has_next(&it)){ 1146 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1147 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1148 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1149 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1150 1151 hfp_ag_hf_stop_ringing(hfp_connection); 1152 if (hfp_connection == source){ 1153 1154 if (use_in_band_tone()){ 1155 hfp_connection->call_state = HFP_CALL_ACTIVE; 1156 } else { 1157 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 1158 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1159 } 1160 1161 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1162 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1163 1164 } else { 1165 hfp_connection->call_state = HFP_CALL_IDLE; 1166 } 1167 hfp_ag_run_for_context(hfp_connection); 1168 } 1169 } 1170 1171 static void hfp_ag_ag_accept_call(void){ 1172 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1173 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1174 1175 btstack_linked_list_iterator_t it; 1176 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1177 while (btstack_linked_list_iterator_has_next(&it)){ 1178 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1179 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1180 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 1181 1182 hfp_ag_hf_stop_ringing(hfp_connection); 1183 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1184 1185 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1186 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1187 1188 hfp_ag_run_for_context(hfp_connection); 1189 break; // only single 1190 } 1191 } 1192 1193 static void hfp_ag_trigger_reject_call(void){ 1194 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1195 btstack_linked_list_iterator_t it; 1196 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1197 while (btstack_linked_list_iterator_has_next(&it)){ 1198 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1199 if (connection->local_role != HFP_ROLE_AG) continue; 1200 if ((connection->call_state != HFP_CALL_RINGING) && 1201 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1202 hfp_ag_hf_stop_ringing(connection); 1203 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1204 connection->call_state = HFP_CALL_IDLE; 1205 hfp_ag_run_for_context(connection); 1206 } 1207 } 1208 1209 static void hfp_ag_trigger_terminate_call(void){ 1210 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1211 1212 btstack_linked_list_iterator_t it; 1213 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1214 while (btstack_linked_list_iterator_has_next(&it)){ 1215 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1216 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1217 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1218 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1219 hfp_connection->call_state = HFP_CALL_IDLE; 1220 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1221 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1222 hfp_connection->release_audio_connection = 1; 1223 } 1224 hfp_ag_run_for_context(hfp_connection); 1225 } 1226 hfp_emit_simple_event(NULL, HFP_SUBEVENT_CALL_TERMINATED); 1227 } 1228 1229 static void hfp_ag_set_call_indicator(void){ 1230 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1231 if (!indicator){ 1232 log_error("hfp_ag_set_call_state: call indicator is missing"); 1233 return; 1234 }; 1235 indicator->status = hfp_gsm_call_status(); 1236 } 1237 1238 static void hfp_ag_stop_ringing(void){ 1239 btstack_linked_list_iterator_t it; 1240 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1241 while (btstack_linked_list_iterator_has_next(&it)){ 1242 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1243 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1244 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1245 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1246 hfp_ag_hf_stop_ringing(hfp_connection); 1247 } 1248 } 1249 1250 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1251 btstack_linked_list_iterator_t it; 1252 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1253 while (btstack_linked_list_iterator_has_next(&it)){ 1254 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1255 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1256 if (hfp_connection->call_state == call_state) return hfp_connection; 1257 } 1258 return NULL; 1259 } 1260 1261 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1262 btstack_linked_list_iterator_t it; 1263 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1264 while (btstack_linked_list_iterator_has_next(&it)){ 1265 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1266 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1267 hfp_connection->send_response_and_hold_status = state + 1; 1268 } 1269 } 1270 1271 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1272 int indicator_index; 1273 switch (hfp_connection->call_state){ 1274 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1275 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1276 // we got event: audio hfp_connection established 1277 hfp_timeout_start(hfp_connection); 1278 hfp_connection->ag_ring = 1; 1279 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1280 hfp_connection->call_state = HFP_CALL_RINGING; 1281 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1282 break; 1283 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1284 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1285 // we got event: audio hfp_connection established 1286 hfp_connection->call_state = HFP_CALL_ACTIVE; 1287 break; 1288 case HFP_CALL_W2_SEND_CALL_WAITING: 1289 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1290 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1291 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1292 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1293 break; 1294 default: 1295 break; 1296 } 1297 return 0; 1298 } 1299 1300 // functions extracted from hfp_ag_call_sm below 1301 static void hfp_ag_handle_reject_outgoing_call(void){ 1302 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1303 if (!hfp_connection){ 1304 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1305 return; 1306 } 1307 1308 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1309 hfp_connection->call_state = HFP_CALL_IDLE; 1310 hfp_connection->send_error = 1; 1311 hfp_ag_run_for_context(hfp_connection); 1312 } 1313 1314 // hfp_connection is used to identify originating HF 1315 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1316 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1317 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1318 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1319 1320 switch (event){ 1321 case HFP_AG_INCOMING_CALL: 1322 switch (hfp_gsm_call_status()){ 1323 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1324 switch (hfp_gsm_callsetup_status()){ 1325 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1326 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1327 hfp_ag_set_callsetup_indicator(); 1328 hfp_ag_trigger_incoming_call(); 1329 log_info("AG rings"); 1330 break; 1331 default: 1332 break; 1333 } 1334 break; 1335 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1336 switch (hfp_gsm_callsetup_status()){ 1337 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1338 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1339 hfp_ag_set_callsetup_indicator(); 1340 hfp_ag_trigger_incoming_call(); 1341 log_info("AG call waiting"); 1342 break; 1343 default: 1344 break; 1345 } 1346 break; 1347 default: 1348 break; 1349 } 1350 break; 1351 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1352 switch (hfp_gsm_call_status()){ 1353 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1354 switch (hfp_gsm_callsetup_status()){ 1355 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1356 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1357 hfp_ag_set_call_indicator(); 1358 hfp_ag_set_callsetup_indicator(); 1359 hfp_ag_ag_accept_call(); 1360 log_info("AG answers call, accept call by GSM"); 1361 break; 1362 default: 1363 break; 1364 } 1365 break; 1366 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1367 switch (hfp_gsm_callsetup_status()){ 1368 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1369 log_info("AG: current call is placed on hold, incoming call gets active"); 1370 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1371 hfp_ag_set_callsetup_indicator(); 1372 hfp_ag_set_callheld_indicator(); 1373 hfp_ag_transfer_callsetup_state(); 1374 hfp_ag_transfer_callheld_state(); 1375 break; 1376 default: 1377 break; 1378 } 1379 break; 1380 default: 1381 break; 1382 } 1383 break; 1384 1385 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1386 switch (hfp_gsm_call_status()){ 1387 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1388 switch (hfp_gsm_callheld_status()){ 1389 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1390 log_info("AG: joining held call with active call"); 1391 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1392 hfp_ag_set_callheld_indicator(); 1393 hfp_ag_transfer_callheld_state(); 1394 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1395 break; 1396 default: 1397 break; 1398 } 1399 break; 1400 default: 1401 break; 1402 } 1403 break; 1404 1405 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1406 switch (hfp_gsm_call_status()){ 1407 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1408 switch (hfp_gsm_callsetup_status()){ 1409 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1410 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1411 hfp_ag_set_callsetup_indicator(); 1412 hfp_ag_set_call_indicator(); 1413 hfp_ag_hf_accept_call(hfp_connection); 1414 hfp_connection->ok_pending = 1; 1415 log_info("HF answers call, accept call by GSM"); 1416 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1417 break; 1418 default: 1419 break; 1420 } 1421 break; 1422 default: 1423 break; 1424 } 1425 break; 1426 1427 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1428 switch (hfp_gsm_call_status()){ 1429 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1430 switch (hfp_gsm_callsetup_status()){ 1431 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1432 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1433 hfp_ag_response_and_hold_active = 1; 1434 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1435 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1436 // as with regular call 1437 hfp_ag_set_call_indicator(); 1438 hfp_ag_set_callsetup_indicator(); 1439 hfp_ag_ag_accept_call(); 1440 log_info("AG response and hold - hold by AG"); 1441 break; 1442 default: 1443 break; 1444 } 1445 break; 1446 default: 1447 break; 1448 } 1449 break; 1450 1451 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1452 switch (hfp_gsm_call_status()){ 1453 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1454 switch (hfp_gsm_callsetup_status()){ 1455 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1456 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1457 hfp_ag_response_and_hold_active = 1; 1458 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1459 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1460 // as with regular call 1461 hfp_ag_set_call_indicator(); 1462 hfp_ag_set_callsetup_indicator(); 1463 hfp_ag_hf_accept_call(hfp_connection); 1464 log_info("AG response and hold - hold by HF"); 1465 break; 1466 default: 1467 break; 1468 } 1469 break; 1470 default: 1471 break; 1472 } 1473 break; 1474 1475 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1476 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1477 if (!hfp_ag_response_and_hold_active) break; 1478 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1479 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1480 hfp_ag_response_and_hold_active = 0; 1481 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1482 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1483 log_info("Held Call accepted and active"); 1484 break; 1485 1486 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1487 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1488 if (!hfp_ag_response_and_hold_active) break; 1489 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1490 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1491 hfp_ag_response_and_hold_active = 0; 1492 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1493 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1494 // from terminate by ag 1495 hfp_ag_set_call_indicator(); 1496 hfp_ag_trigger_terminate_call(); 1497 break; 1498 1499 case HFP_AG_TERMINATE_CALL_BY_HF: 1500 switch (hfp_gsm_call_status()){ 1501 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1502 switch (hfp_gsm_callsetup_status()){ 1503 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1504 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1505 hfp_ag_set_callsetup_indicator(); 1506 hfp_ag_transfer_callsetup_state(); 1507 hfp_ag_trigger_reject_call(); 1508 log_info("HF Rejected Incoming call, AG terminate call"); 1509 break; 1510 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1511 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1512 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1513 hfp_ag_set_callsetup_indicator(); 1514 hfp_ag_transfer_callsetup_state(); 1515 log_info("AG terminate outgoing call process"); 1516 break; 1517 default: 1518 break; 1519 } 1520 break; 1521 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1522 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1523 hfp_ag_set_callsetup_indicator(); 1524 hfp_ag_set_call_indicator(); 1525 hfp_ag_trigger_terminate_call(); 1526 log_info("AG terminate call"); 1527 break; 1528 default: 1529 break; 1530 } 1531 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1532 break; 1533 1534 case HFP_AG_TERMINATE_CALL_BY_AG: 1535 switch (hfp_gsm_call_status()){ 1536 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1537 switch (hfp_gsm_callsetup_status()){ 1538 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1539 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1540 hfp_ag_set_callsetup_indicator(); 1541 hfp_ag_trigger_reject_call(); 1542 log_info("AG Rejected Incoming call, AG terminate call"); 1543 break; 1544 default: 1545 break; 1546 } 1547 break; 1548 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1549 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1550 hfp_ag_set_callsetup_indicator(); 1551 hfp_ag_set_call_indicator(); 1552 hfp_ag_trigger_terminate_call(); 1553 log_info("AG terminate call"); 1554 break; 1555 default: 1556 break; 1557 } 1558 break; 1559 case HFP_AG_CALL_DROPPED: 1560 switch (hfp_gsm_call_status()){ 1561 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1562 switch (hfp_gsm_callsetup_status()){ 1563 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1564 hfp_ag_stop_ringing(); 1565 log_info("Incoming call interrupted"); 1566 break; 1567 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1568 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1569 log_info("Outgoing call interrupted\n"); 1570 log_info("AG notify call dropped\n"); 1571 break; 1572 default: 1573 break; 1574 } 1575 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1576 hfp_ag_set_callsetup_indicator(); 1577 hfp_ag_transfer_callsetup_state(); 1578 hfp_ag_trigger_terminate_call(); 1579 break; 1580 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1581 if (hfp_ag_response_and_hold_active) { 1582 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1583 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1584 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1585 } 1586 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1587 hfp_ag_set_callsetup_indicator(); 1588 hfp_ag_set_call_indicator(); 1589 hfp_ag_trigger_terminate_call(); 1590 log_info("AG notify call dropped"); 1591 break; 1592 default: 1593 break; 1594 } 1595 break; 1596 1597 case HFP_AG_OUTGOING_CALL_INITIATED_BY_HF: 1598 // directly reject call if number of free slots is exceeded 1599 if (!hfp_gsm_call_possible()){ 1600 hfp_connection->send_error = 1; 1601 hfp_ag_run_for_context(hfp_connection); 1602 break; 1603 } 1604 1605 // note: number not used currently 1606 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1607 1608 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1609 1610 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1611 break; 1612 1613 case HFP_AG_OUTGOING_CALL_INITIATED_BY_AG: 1614 // directly reject call if number of free slots is exceeded 1615 if (!hfp_gsm_call_possible()) { 1616 // TODO: no error for user 1617 break; 1618 } 1619 switch (hfp_gsm_call_status()) { 1620 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1621 switch (hfp_gsm_callsetup_status()) { 1622 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1623 // note: number not used currently 1624 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, 0, 0, "1234567"); 1625 // init call state for all connections 1626 hfp_ag_trigger_outgoing_call(); 1627 // get first one and accept call 1628 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1629 if (hfp_connection) { 1630 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1631 } 1632 break; 1633 default: 1634 // TODO: no error for user 1635 break; 1636 } 1637 break; 1638 default: 1639 // TODO: no error for user 1640 break; 1641 } 1642 break; 1643 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1644 // directly reject call if number of free slots is exceeded 1645 if (!hfp_gsm_call_possible()){ 1646 hfp_connection->send_error = 1; 1647 hfp_ag_run_for_context(hfp_connection); 1648 break; 1649 } 1650 1651 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1652 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1653 1654 log_info("Redial last number"); 1655 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1656 1657 if (strlen(last_dialed_number) > 0){ 1658 log_info("Last number exists: accept call"); 1659 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1660 } else { 1661 log_info("log_infoLast number missing: reject call"); 1662 hfp_ag_handle_reject_outgoing_call(); 1663 } 1664 break; 1665 } 1666 case HFP_AG_OUTGOING_CALL_REJECTED: 1667 hfp_ag_handle_reject_outgoing_call(); 1668 break; 1669 1670 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1671 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1672 if (!hfp_connection){ 1673 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1674 break; 1675 } 1676 1677 hfp_connection->ok_pending = 1; 1678 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1679 break; 1680 } 1681 case HFP_AG_OUTGOING_CALL_RINGING: 1682 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1683 if (!hfp_connection){ 1684 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1685 break; 1686 } 1687 1688 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1689 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1690 hfp_ag_set_callsetup_indicator(); 1691 hfp_ag_transfer_callsetup_state(); 1692 break; 1693 1694 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1695 // get outgoing call 1696 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1697 if (!hfp_connection){ 1698 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1699 } 1700 if (!hfp_connection){ 1701 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1702 break; 1703 } 1704 1705 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1706 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1707 hfp_connection->call_state = HFP_CALL_ACTIVE; 1708 hfp_ag_set_callsetup_indicator(); 1709 hfp_ag_set_call_indicator(); 1710 hfp_ag_transfer_call_state(); 1711 hfp_ag_transfer_callsetup_state(); 1712 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1713 hfp_ag_set_callheld_indicator(); 1714 hfp_ag_transfer_callheld_state(); 1715 } 1716 break; 1717 } 1718 1719 case HFP_AG_CALL_HOLD_USER_BUSY: 1720 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1721 hfp_ag_set_callsetup_indicator(); 1722 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1723 hfp_connection->call_state = HFP_CALL_ACTIVE; 1724 log_info("AG: Call Waiting, User Busy"); 1725 break; 1726 1727 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1728 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1729 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1730 1731 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1732 if (call_held || call_setup_in_progress){ 1733 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1734 0, NULL); 1735 1736 } 1737 1738 if (call_setup_in_progress){ 1739 log_info("AG: Call Dropped, Accept new call"); 1740 hfp_ag_set_callsetup_indicator(); 1741 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1742 } else { 1743 log_info("AG: Call Dropped, Resume held call"); 1744 } 1745 if (call_held){ 1746 hfp_ag_set_callheld_indicator(); 1747 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1748 } 1749 1750 hfp_connection->call_state = HFP_CALL_ACTIVE; 1751 break; 1752 } 1753 1754 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1755 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1756 // only update if callsetup changed 1757 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1758 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1759 NULL); 1760 1761 if (call_setup_in_progress){ 1762 log_info("AG: Call on Hold, Accept new call"); 1763 hfp_ag_set_callsetup_indicator(); 1764 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1765 } else { 1766 log_info("AG: Swap calls"); 1767 } 1768 1769 hfp_ag_set_callheld_indicator(); 1770 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1771 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1772 hfp_connection->call_state = HFP_CALL_ACTIVE; 1773 break; 1774 } 1775 1776 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1777 // Adds a held call to the conversation. 1778 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1779 log_info("AG: Join 3-way-call"); 1780 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1781 hfp_ag_set_callheld_indicator(); 1782 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1783 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1784 } 1785 hfp_connection->call_state = HFP_CALL_ACTIVE; 1786 break; 1787 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1788 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1789 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1790 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1791 hfp_ag_set_call_indicator(); 1792 hfp_ag_set_callheld_indicator(); 1793 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1794 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1795 hfp_connection->call_state = HFP_CALL_IDLE; 1796 break; 1797 1798 default: 1799 break; 1800 } 1801 1802 1803 } 1804 1805 1806 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1807 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1808 if (!active_call) return; 1809 1810 int idx = active_call->index; 1811 hfp_enhanced_call_dir_t dir = active_call->direction; 1812 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1813 hfp_enhanced_call_mode_t mode = active_call->mode; 1814 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1815 uint8_t type = active_call->clip_type; 1816 char * number = active_call->clip_number; 1817 1818 char buffer[100]; 1819 // TODO: check length of a buffer, to fit the MTU 1820 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1821 if (number){ 1822 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1823 } 1824 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1825 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, 1826 mode, mpty, type, number); 1827 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1828 } 1829 1830 1831 // sends pending command, returns if command was sent 1832 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1833 1834 if (hfp_connection->send_status_of_current_calls){ 1835 hfp_connection->ok_pending = 0; 1836 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1837 hfp_connection->next_call_index++; 1838 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1839 return 1; 1840 } else { 1841 // 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 1842 hfp_connection->next_call_index = 0; 1843 hfp_connection->ok_pending = 1; 1844 hfp_connection->send_status_of_current_calls = 0; 1845 } 1846 } 1847 1848 if (hfp_connection->ag_notify_incoming_call_waiting){ 1849 hfp_connection->ag_notify_incoming_call_waiting = 0; 1850 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1851 return 1; 1852 } 1853 1854 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1855 hfp_connection->ok_pending = 0; 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 if (hfp_connection->send_error){ 1863 hfp_connection->send_error = 0; 1864 hfp_connection->command = HFP_CMD_NONE; 1865 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1866 return 1; 1867 } 1868 1869 // note: before update AG indicators and ok_pending 1870 if (hfp_connection->send_response_and_hold_status){ 1871 int status = hfp_connection->send_response_and_hold_status - 1; 1872 hfp_connection->send_response_and_hold_status = 0; 1873 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1874 return 1; 1875 } 1876 1877 if (hfp_connection->ok_pending){ 1878 hfp_connection->ok_pending = 0; 1879 hfp_connection->command = HFP_CMD_NONE; 1880 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1881 return 1; 1882 } 1883 1884 // update AG indicators 1885 if (hfp_connection->ag_indicators_status_update_bitmap){ 1886 int i; 1887 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1888 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1889 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1890 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1891 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1892 break; 1893 } 1894 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1895 return 1; 1896 } 1897 } 1898 } 1899 1900 if (hfp_connection->ag_send_no_carrier){ 1901 hfp_connection->ag_send_no_carrier = false; 1902 hfp_ag_send_no_carrier(hfp_connection->rfcomm_cid); 1903 return 1; 1904 } 1905 1906 if (hfp_connection->ag_ring){ 1907 hfp_connection->ag_ring = 0; 1908 hfp_connection->command = HFP_CMD_NONE; 1909 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1910 return 1; 1911 } 1912 1913 if (hfp_connection->ag_send_clip){ 1914 hfp_connection->ag_send_clip = 0; 1915 hfp_connection->command = HFP_CMD_NONE; 1916 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1917 return 1; 1918 } 1919 1920 if (hfp_connection->send_phone_number_for_voice_tag){ 1921 hfp_connection->send_phone_number_for_voice_tag = 0; 1922 hfp_connection->command = HFP_CMD_NONE; 1923 hfp_connection->ok_pending = 1; 1924 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1925 return 1; 1926 } 1927 1928 if (hfp_connection->send_subscriber_number){ 1929 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1930 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1931 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1932 } else { 1933 hfp_connection->send_subscriber_number = 0; 1934 hfp_connection->next_subscriber_number_to_send = 0; 1935 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1936 } 1937 hfp_connection->command = HFP_CMD_NONE; 1938 return 1; 1939 } 1940 1941 if (hfp_connection->send_microphone_gain){ 1942 hfp_connection->send_microphone_gain = 0; 1943 hfp_connection->command = HFP_CMD_NONE; 1944 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1945 return 1; 1946 } 1947 1948 if (hfp_connection->send_speaker_gain){ 1949 hfp_connection->send_speaker_gain = 0; 1950 hfp_connection->command = HFP_CMD_NONE; 1951 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1952 return 1; 1953 } 1954 1955 if (hfp_connection->send_ag_status_indicators){ 1956 hfp_connection->send_ag_status_indicators = 0; 1957 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1958 return 1; 1959 } 1960 1961 return 0; 1962 } 1963 1964 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1965 1966 btstack_assert(hfp_connection != NULL); 1967 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1968 1969 // during SDP query, RFCOMM CID is not set 1970 if (hfp_connection->rfcomm_cid == 0) return; 1971 1972 // assert command could be sent 1973 if (hci_can_send_command_packet_now() == 0) return; 1974 1975 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 1976 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 1977 hfp_connection->release_audio_connection = 0; 1978 gap_disconnect(hfp_connection->sco_handle); 1979 return; 1980 } 1981 1982 #ifdef ENABLE_CC256X_ASSISTED_HFP 1983 // WBS Disassociate 1984 if (hfp_connection->cc256x_send_wbs_disassociate){ 1985 hfp_connection->cc256x_send_wbs_disassociate = false; 1986 hci_send_cmd(&hci_ti_wbs_disassociate); 1987 return; 1988 } 1989 // Write Codec Config 1990 if (hfp_connection->cc256x_send_write_codec_config){ 1991 hfp_connection->cc256x_send_write_codec_config = false; 1992 hfp_cc256x_write_codec_config(hfp_connection); 1993 return; 1994 } 1995 // WBS Associate 1996 if (hfp_connection->cc256x_send_wbs_associate){ 1997 hfp_connection->cc256x_send_wbs_associate = false; 1998 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 1999 return; 2000 } 2001 #endif 2002 #ifdef ENABLE_BCM_PCM_WBS 2003 // Enable WBS 2004 if (hfp_connection->bcm_send_enable_wbs){ 2005 hfp_connection->bcm_send_enable_wbs = false; 2006 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 2007 return; 2008 } 2009 // Write I2S/PCM params 2010 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 2011 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 2012 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 2013 return; 2014 } 2015 // Disable WBS 2016 if (hfp_connection->bcm_send_disable_wbs){ 2017 hfp_connection->bcm_send_disable_wbs = false; 2018 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 2019 return; 2020 } 2021 #endif 2022 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 2023 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 2024 hfp_finalize_connection_context(hfp_connection); 2025 return; 2026 } 2027 #endif 2028 2029 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 2030 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 2031 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2032 return; 2033 } 2034 2035 int cmd_sent = hfp_ag_send_commands(hfp_connection); 2036 2037 if (!cmd_sent){ 2038 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 2039 } 2040 2041 if (!cmd_sent){ 2042 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 2043 } 2044 2045 if (!cmd_sent){ 2046 cmd_sent = hfp_ag_voice_recognition_state_machine(hfp_connection); 2047 } 2048 2049 if (!cmd_sent){ 2050 cmd_sent = call_setup_state_machine(hfp_connection); 2051 } 2052 2053 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 2054 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 2055 switch (hfp_connection->codecs_state){ 2056 case HFP_CODECS_IDLE: 2057 case HFP_CODECS_RECEIVED_LIST: 2058 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2059 case HFP_CODECS_ERROR: 2060 hfp_connection->trigger_codec_exchange = 0; 2061 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2062 break; 2063 default: 2064 break; 2065 } 2066 } 2067 2068 if (!cmd_sent){ 2069 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 2070 } 2071 2072 2073 // disconnect 2074 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 2075 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 2076 rfcomm_disconnect(hfp_connection->rfcomm_cid); 2077 } 2078 2079 if (cmd_sent){ 2080 hfp_connection->command = HFP_CMD_NONE; 2081 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2082 } 2083 } 2084 2085 static int hfp_parser_is_end_of_line(uint8_t byte){ 2086 return (byte == '\n') || (byte == '\r'); 2087 } 2088 2089 static void hfp_ag_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 2090 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 2091 if (!hfp_connection) return; 2092 if (size < 1) return; 2093 2094 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 2095 #ifdef ENABLE_HFP_AT_MESSAGES 2096 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 2097 #endif 2098 2099 // process messages byte-wise 2100 int pos; 2101 for (pos = 0; pos < size ; pos++){ 2102 hfp_parse(hfp_connection, packet[pos], 0); 2103 2104 // parse until end of line 2105 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 2106 2107 hfp_generic_status_indicator_t * indicator; 2108 switch(hfp_connection->command){ 2109 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 2110 // dealt with in hfp_ag_voice_recognition_state_machine 2111 break; 2112 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 2113 if (hfp_ag_response_and_hold_active){ 2114 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 2115 } 2116 hfp_connection->ok_pending = 1; 2117 break; 2118 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 2119 switch(hfp_connection->ag_response_and_hold_action){ 2120 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 2121 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 2122 break; 2123 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 2124 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 2125 break; 2126 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 2127 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 2128 break; 2129 default: 2130 break; 2131 } 2132 hfp_connection->ok_pending = 1; 2133 break; 2134 case HFP_CMD_HF_INDICATOR_STATUS: 2135 hfp_connection->command = HFP_CMD_NONE; 2136 if (hfp_connection->parser_indicator_index < hfp_generic_status_indicators_nr){ 2137 indicator = &hfp_generic_status_indicators[hfp_connection->parser_indicator_index]; 2138 } else { 2139 hfp_connection->send_error = 1; 2140 break; 2141 } 2142 switch (indicator->uuid){ 2143 case 1: // enhanced security 2144 if (hfp_connection->parser_indicator_value > 1) { 2145 hfp_connection->send_error = 1; 2146 return; 2147 } 2148 log_info("HF Indicator 'enhanced security' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2149 break; 2150 case 2: // battery level 2151 if (hfp_connection->parser_indicator_value > 100){ 2152 hfp_connection->send_error = 1; 2153 return; 2154 } 2155 log_info("HF Indicator 'battery' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2156 break; 2157 default: 2158 log_info("HF Indicator unknown set to %u", (unsigned int) hfp_connection->parser_indicator_value); 2159 break; 2160 } 2161 hfp_connection->ok_pending = 1; 2162 break; 2163 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 2164 // expected by SLC state machine 2165 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 2166 hfp_connection->send_ag_indicators_segment = 0; 2167 hfp_connection->send_ag_status_indicators = 1; 2168 break; 2169 case HFP_CMD_LIST_CURRENT_CALLS: 2170 hfp_connection->command = HFP_CMD_NONE; 2171 hfp_connection->next_call_index = 0; 2172 hfp_connection->send_status_of_current_calls = 1; 2173 break; 2174 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 2175 if (subscriber_numbers_count == 0){ 2176 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2177 break; 2178 } 2179 hfp_connection->next_subscriber_number_to_send = 0; 2180 hfp_connection->send_subscriber_number = 1; 2181 break; 2182 case HFP_CMD_TRANSMIT_DTMF_CODES: 2183 { 2184 hfp_connection->command = HFP_CMD_NONE; 2185 char buffer[2]; 2186 buffer[0] = (char) hfp_connection->ag_dtmf_code; 2187 buffer[1] = 0; 2188 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 2189 break; 2190 } 2191 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 2192 hfp_connection->command = HFP_CMD_NONE; 2193 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 2194 break; 2195 case HFP_CMD_TURN_OFF_EC_AND_NR: 2196 hfp_connection->command = HFP_CMD_NONE; 2197 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 2198 hfp_connection->ok_pending = 1; 2199 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 2200 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 2201 } else { 2202 hfp_connection->send_error = 1; 2203 } 2204 break; 2205 case HFP_CMD_CALL_ANSWERED: 2206 hfp_connection->command = HFP_CMD_NONE; 2207 log_info("HFP: ATA"); 2208 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 2209 break; 2210 case HFP_CMD_HANG_UP_CALL: 2211 hfp_connection->command = HFP_CMD_NONE; 2212 hfp_connection->ok_pending = 1; 2213 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 2214 break; 2215 case HFP_CMD_CALL_HOLD: { 2216 hfp_connection->command = HFP_CMD_NONE; 2217 hfp_connection->ok_pending = 1; 2218 2219 switch (hfp_connection->ag_call_hold_action){ 2220 case 0: 2221 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2222 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2223 break; 2224 case 1: 2225 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2226 // Where both a held and a waiting call exist, the above procedures shall apply to the 2227 // waiting call (i.e., not to the held call) in conflicting situation. 2228 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2229 break; 2230 case 2: 2231 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2232 // Where both a held and a waiting call exist, the above procedures shall apply to the 2233 // waiting call (i.e., not to the held call) in conflicting situation. 2234 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2235 break; 2236 case 3: 2237 // Adds a held call to the conversation. 2238 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2239 break; 2240 case 4: 2241 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2242 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2243 break; 2244 default: 2245 break; 2246 } 2247 hfp_connection->call_index = 0; 2248 break; 2249 } 2250 case HFP_CMD_CALL_PHONE_NUMBER: 2251 hfp_connection->command = HFP_CMD_NONE; 2252 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, hfp_connection); 2253 break; 2254 case HFP_CMD_REDIAL_LAST_NUMBER: 2255 hfp_connection->command = HFP_CMD_NONE; 2256 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2257 break; 2258 case HFP_CMD_ENABLE_CLIP: 2259 hfp_connection->command = HFP_CMD_NONE; 2260 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2261 hfp_connection->ok_pending = 1; 2262 break; 2263 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2264 hfp_connection->command = HFP_CMD_NONE; 2265 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2266 hfp_connection->ok_pending = 1; 2267 break; 2268 case HFP_CMD_SET_SPEAKER_GAIN: 2269 hfp_connection->command = HFP_CMD_NONE; 2270 hfp_connection->ok_pending = 1; 2271 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2272 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2273 break; 2274 case HFP_CMD_SET_MICROPHONE_GAIN: 2275 hfp_connection->command = HFP_CMD_NONE; 2276 hfp_connection->ok_pending = 1; 2277 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2278 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2279 break; 2280 default: 2281 break; 2282 } 2283 } 2284 } 2285 2286 static void hfp_ag_run(void){ 2287 btstack_linked_list_iterator_t it; 2288 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2289 while (btstack_linked_list_iterator_has_next(&it)){ 2290 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2291 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2292 hfp_ag_run_for_context(hfp_connection); 2293 } 2294 } 2295 2296 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2297 hfp_connection_t * hfp_connection = NULL; 2298 switch (packet_type){ 2299 case RFCOMM_DATA_PACKET: 2300 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 2301 2302 hfp_ag_handle_rfcomm_data(hfp_connection, packet, size); 2303 hfp_ag_run_for_context(hfp_connection); 2304 return; 2305 case HCI_EVENT_PACKET: 2306 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2307 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2308 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2309 return; 2310 } 2311 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2312 break; 2313 default: 2314 break; 2315 } 2316 2317 hfp_ag_run(); 2318 } 2319 2320 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2321 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2322 hfp_ag_run(); 2323 } 2324 2325 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2326 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2327 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2328 return; 2329 } 2330 int i; 2331 hfp_codecs_nr = codecs_nr; 2332 for (i=0; i < codecs_nr; i++){ 2333 hfp_codecs[i] = codecs[i]; 2334 } 2335 } 2336 2337 void hfp_ag_init_supported_features(uint32_t supported_features){ 2338 hfp_supported_features = supported_features; 2339 } 2340 2341 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2342 hfp_ag_indicators_nr = ag_indicators_nr; 2343 (void)memcpy(hfp_ag_indicators, ag_indicators, 2344 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2345 } 2346 2347 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2348 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2349 hfp_generic_status_indicators_nr = hf_indicators_nr; 2350 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2351 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2352 } 2353 2354 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2355 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2356 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2357 call_hold_services_nr * sizeof(char *)); 2358 } 2359 2360 2361 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2362 2363 hfp_init(); 2364 hfp_ag_call_hold_services_nr = 0; 2365 hfp_ag_response_and_hold_active = 0; 2366 hfp_ag_indicators_nr = 0; 2367 hfp_codecs_nr = 0; 2368 hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2369 subscriber_numbers = NULL; 2370 subscriber_numbers_count = 0; 2371 2372 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2373 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2374 2375 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2376 2377 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2378 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2379 2380 hfp_gsm_init(); 2381 } 2382 2383 void hfp_ag_deinit(void){ 2384 hfp_deinit(); 2385 hfp_gsm_deinit(); 2386 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2387 (void) memset(&hfp_ag_callback, 0, sizeof(btstack_packet_handler_t)); 2388 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2389 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2390 } 2391 2392 uint8_t hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2393 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2394 } 2395 2396 uint8_t hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2397 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2398 if (!hfp_connection){ 2399 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2400 } 2401 2402 hfp_trigger_release_service_level_connection(hfp_connection); 2403 hfp_ag_run_for_context(hfp_connection); 2404 return ERROR_CODE_SUCCESS; 2405 } 2406 2407 uint8_t hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2408 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2409 if (!hfp_connection){ 2410 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2411 } 2412 2413 hfp_connection->extended_audio_gateway_error = 0; 2414 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2415 return ERROR_CODE_COMMAND_DISALLOWED; 2416 } 2417 2418 hfp_connection->extended_audio_gateway_error = error; 2419 hfp_ag_run_for_context(hfp_connection); 2420 return ERROR_CODE_SUCCESS; 2421 } 2422 2423 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2424 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 2425 return ERROR_CODE_COMMAND_DISALLOWED; 2426 } 2427 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 2428 return ERROR_CODE_COMMAND_DISALLOWED; 2429 } 2430 2431 hfp_connection->establish_audio_connection = 1; 2432 if (!has_codec_negotiation_feature(hfp_connection)){ 2433 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2434 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2435 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2436 // now, pick link settings 2437 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2438 #ifdef ENABLE_CC256X_ASSISTED_HFP 2439 hfp_cc256x_prepare_for_sco(hfp_connection); 2440 #endif 2441 return ERROR_CODE_SUCCESS; 2442 } 2443 2444 uint8_t i; 2445 bool codec_was_in_use = false; 2446 bool better_codec_can_be_used = false; 2447 2448 for (i = 0; i<hfp_connection->remote_codecs_nr; i++){ 2449 if (hfp_connection->negotiated_codec == hfp_connection->remote_codecs[i]){ 2450 codec_was_in_use = true; 2451 } else if (hfp_connection->negotiated_codec < hfp_connection->remote_codecs[i]){ 2452 better_codec_can_be_used = true; 2453 } 2454 } 2455 2456 if (!codec_was_in_use || better_codec_can_be_used){ 2457 hfp_connection->trigger_codec_exchange = 1; 2458 hfp_connection->codecs_state = HFP_CODECS_IDLE; 2459 } 2460 return ERROR_CODE_SUCCESS; 2461 } 2462 2463 uint8_t hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2464 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2465 if (!hfp_connection){ 2466 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2467 } 2468 uint8_t status = hfp_ag_setup_audio_connection(hfp_connection); 2469 if (status != ERROR_CODE_SUCCESS){ 2470 return status; 2471 } 2472 hfp_ag_run_for_context(hfp_connection); 2473 return ERROR_CODE_SUCCESS; 2474 } 2475 2476 uint8_t hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2477 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2478 if (!hfp_connection){ 2479 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2480 } 2481 2482 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 2483 if (!hfp_connection->ag_audio_connection_opened_after_vra){ 2484 return ERROR_CODE_COMMAND_DISALLOWED; 2485 } 2486 } 2487 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 2488 if (status == ERROR_CODE_SUCCESS){ 2489 hfp_ag_run_for_context(hfp_connection); 2490 } 2491 return status; 2492 } 2493 2494 /** 2495 * @brief Enable in-band ring tone 2496 */ 2497 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2498 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2499 return; 2500 } 2501 2502 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2503 2504 btstack_linked_list_iterator_t it; 2505 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2506 while (btstack_linked_list_iterator_has_next(&it)){ 2507 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2508 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2509 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2510 hfp_ag_run_for_context(hfp_connection); 2511 } 2512 } 2513 2514 /** 2515 * @brief Called from GSM 2516 */ 2517 void hfp_ag_incoming_call(void){ 2518 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2519 } 2520 2521 void hfp_ag_outgoing_call_initiated(const char * number) { 2522 UNUSED(number); 2523 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, NULL); 2524 } 2525 2526 /** 2527 * @brief number is stored. 2528 */ 2529 void hfp_ag_set_clip(uint8_t type, const char * number){ 2530 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2531 } 2532 2533 void hfp_ag_call_dropped(void){ 2534 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2535 } 2536 2537 // call from AG UI 2538 void hfp_ag_answer_incoming_call(void){ 2539 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2540 } 2541 2542 void hfp_ag_join_held_call(void){ 2543 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2544 } 2545 2546 void hfp_ag_terminate_call(void){ 2547 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2548 } 2549 2550 void hfp_ag_outgoing_call_ringing(void){ 2551 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2552 } 2553 2554 void hfp_ag_outgoing_call_established(void){ 2555 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2556 } 2557 2558 void hfp_ag_outgoing_call_rejected(void){ 2559 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2560 } 2561 2562 void hfp_ag_outgoing_call_accepted(void){ 2563 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2564 } 2565 2566 void hfp_ag_hold_incoming_call(void){ 2567 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2568 } 2569 2570 void hfp_ag_accept_held_incoming_call(void) { 2571 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2572 } 2573 2574 void hfp_ag_reject_held_incoming_call(void){ 2575 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2576 } 2577 2578 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2579 int indicator_index = get_ag_indicator_index_for_name(name); 2580 if (indicator_index < 0) return; 2581 hfp_ag_indicators[indicator_index].status = value; 2582 2583 btstack_linked_list_iterator_t it; 2584 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2585 while (btstack_linked_list_iterator_has_next(&it)){ 2586 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2587 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2588 if (!hfp_connection->ag_indicators[indicator_index].enabled) { 2589 log_info("Requested AG indicator '%s' update to %u, but it is not enabled", hfp_ag_indicators[indicator_index].name, value); 2590 continue; 2591 } 2592 log_info("AG indicator '%s' changed to %u, request transfer status", hfp_ag_indicators[indicator_index].name, value); 2593 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2594 hfp_ag_run_for_context(hfp_connection); 2595 } 2596 } 2597 2598 uint8_t hfp_ag_set_registration_status(int registration_status){ 2599 if ((registration_status < 0) || (registration_status > 1)){ 2600 return ERROR_CODE_COMMAND_DISALLOWED; 2601 } 2602 2603 if ( (registration_status == 0) && (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 2604 2605 // if network goes away wihle a call is active: 2606 // - the call gets dropped 2607 // - we send NO CARRIER 2608 // NOTE: the CALL=0 has to be sent before NO CARRIER 2609 2610 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2611 2612 btstack_linked_list_iterator_t it; 2613 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2614 while (btstack_linked_list_iterator_has_next(&it)){ 2615 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2616 hfp_connection->ag_send_no_carrier = true; 2617 } 2618 } 2619 hfp_ag_set_ag_indicator("service", registration_status); 2620 return ERROR_CODE_SUCCESS; 2621 } 2622 2623 uint8_t hfp_ag_set_signal_strength(int signal_strength){ 2624 if ((signal_strength < 0) || (signal_strength > 5)){ 2625 return ERROR_CODE_COMMAND_DISALLOWED; 2626 } 2627 2628 hfp_ag_set_ag_indicator("signal", signal_strength); 2629 return ERROR_CODE_SUCCESS; 2630 } 2631 2632 uint8_t hfp_ag_set_roaming_status(int roaming_status){ 2633 if ((roaming_status < 0) || (roaming_status > 1)){ 2634 return ERROR_CODE_COMMAND_DISALLOWED; 2635 } 2636 2637 hfp_ag_set_ag_indicator("roam", roaming_status); 2638 return ERROR_CODE_SUCCESS; 2639 } 2640 2641 uint8_t hfp_ag_set_battery_level(int battery_level){ 2642 if ((battery_level < 0) || (battery_level > 5)){ 2643 return ERROR_CODE_COMMAND_DISALLOWED; 2644 } 2645 hfp_ag_set_ag_indicator("battchg", battery_level); 2646 return ERROR_CODE_SUCCESS; 2647 } 2648 2649 uint8_t hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle){ 2650 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2651 if (!hfp_connection){ 2652 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2653 } 2654 uint8_t status = hfp_ag_can_activate_voice_recognition_for_connection(hfp_connection); 2655 if (status == ERROR_CODE_SUCCESS){ 2656 hfp_connection->ag_activate_voice_recognition_value = 1; 2657 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 2658 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2659 hfp_connection->ag_audio_connection_opened_after_vra = hfp_ag_is_audio_connection_active(hfp_connection); 2660 hfp_ag_run_for_context(hfp_connection); 2661 } 2662 return status; 2663 } 2664 2665 uint8_t hfp_ag_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2666 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2667 if (!hfp_connection){ 2668 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2669 } 2670 uint8_t status = hfp_ag_can_deactivate_voice_recognition_for_connection(hfp_connection); 2671 if (status == ERROR_CODE_SUCCESS){ 2672 hfp_connection->ag_activate_voice_recognition_value = 0; 2673 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2674 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2675 hfp_ag_run_for_context(hfp_connection); 2676 } 2677 return status; 2678 } 2679 2680 2681 uint8_t hfp_ag_activate_enhanced_voice_recognition(hci_con_handle_t acl_handle){ 2682 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2683 return ERROR_CODE_COMMAND_DISALLOWED; 2684 } 2685 2686 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2687 if (!hfp_connection){ 2688 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2689 } 2690 2691 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2692 return ERROR_CODE_COMMAND_DISALLOWED; 2693 } 2694 2695 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2696 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2697 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_ACTIVATED; 2698 hfp_ag_run_for_context(hfp_connection); 2699 return ERROR_CODE_SUCCESS; 2700 } 2701 2702 uint8_t hfp_ag_deactivate_enhanced_voice_recognition(hci_con_handle_t acl_handle){ 2703 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2704 return ERROR_CODE_COMMAND_DISALLOWED; 2705 } 2706 2707 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2708 if (!hfp_connection){ 2709 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2710 } 2711 2712 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2713 return ERROR_CODE_COMMAND_DISALLOWED; 2714 } 2715 2716 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2717 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2718 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_OFF; 2719 hfp_ag_run_for_context(hfp_connection); 2720 return ERROR_CODE_SUCCESS; 2721 } 2722 2723 uint8_t hfp_ag_enhanced_voice_recognition_state(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state){ 2724 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2725 return ERROR_CODE_COMMAND_DISALLOWED; 2726 } 2727 2728 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2729 if (!hfp_connection){ 2730 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2731 } 2732 2733 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2734 return ERROR_CODE_COMMAND_DISALLOWED; 2735 } 2736 2737 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2738 hfp_connection->ag_vra_state = state; 2739 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_STATUS; 2740 hfp_ag_run_for_context(hfp_connection); 2741 return ERROR_CODE_SUCCESS; 2742 } 2743 2744 uint8_t hfp_ag_enhanced_voice_recognition_starting_sound(hci_con_handle_t acl_handle){ 2745 return hfp_ag_enhanced_voice_recognition_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_SENDING_AUDIO_TO_HF); 2746 } 2747 uint8_t hfp_ag_enhanced_voice_recognition_ready_for_input(hci_con_handle_t acl_handle){ 2748 return hfp_ag_enhanced_voice_recognition_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_READY_TO_ACCEPT_AUDIO_INPUT); 2749 } 2750 uint8_t hfp_ag_enhanced_voice_recognition_processing_input(hci_con_handle_t acl_handle){ 2751 return hfp_ag_enhanced_voice_recognition_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_PROCESSING_AUDIO_INPUT); 2752 } 2753 2754 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){ 2755 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 2756 return ERROR_CODE_COMMAND_DISALLOWED; 2757 } 2758 2759 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2760 if (!hfp_connection){ 2761 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2762 } 2763 2764 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)){ 2765 return ERROR_CODE_COMMAND_DISALLOWED; 2766 } 2767 2768 hfp_connection->command = HFP_CMD_AG_ACTIVATE_ENHANCED_VOICE_RECOGNITION; 2769 hfp_connection->ag_vra_state = state; 2770 hfp_connection->ag_vra_status = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_MSG; 2771 hfp_connection->ag_msg = msg; 2772 hfp_ag_run_for_context(hfp_connection); 2773 return ERROR_CODE_SUCCESS; 2774 } 2775 2776 uint8_t hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2777 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2778 if (!hfp_connection){ 2779 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2780 } 2781 2782 if ((gain < 0) || (gain > 15)){ 2783 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2784 return ERROR_CODE_COMMAND_DISALLOWED; 2785 } 2786 2787 if (hfp_connection->microphone_gain != gain){ 2788 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2789 hfp_connection->microphone_gain = gain; 2790 hfp_connection->send_microphone_gain = 1; 2791 } 2792 hfp_ag_run_for_context(hfp_connection); 2793 return ERROR_CODE_SUCCESS; 2794 } 2795 2796 uint8_t hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2797 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2798 if (!hfp_connection){ 2799 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2800 } 2801 2802 if ((gain < 0) || (gain > 15)){ 2803 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2804 return ERROR_CODE_COMMAND_DISALLOWED; 2805 } 2806 2807 if (hfp_connection->speaker_gain != gain){ 2808 hfp_connection->speaker_gain = gain; 2809 hfp_connection->send_speaker_gain = 1; 2810 } 2811 hfp_ag_run_for_context(hfp_connection); 2812 return ERROR_CODE_SUCCESS; 2813 } 2814 2815 uint8_t hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2816 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2817 if (!hfp_connection){ 2818 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2819 } 2820 2821 hfp_ag_set_clip(0, number); 2822 hfp_connection->send_phone_number_for_voice_tag = 1; 2823 return ERROR_CODE_SUCCESS; 2824 } 2825 2826 uint8_t hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2827 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2828 if (!hfp_connection){ 2829 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2830 } 2831 2832 hfp_connection->send_error = 1; 2833 return ERROR_CODE_SUCCESS; 2834 } 2835 2836 uint8_t hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2837 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2838 if (!hfp_connection){ 2839 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2840 } 2841 2842 hfp_connection->ok_pending = 1; 2843 return ERROR_CODE_SUCCESS; 2844 } 2845 2846 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2847 subscriber_numbers = numbers; 2848 subscriber_numbers_count = numbers_count; 2849 } 2850 2851 void hfp_ag_clear_last_dialed_number(void){ 2852 hfp_gsm_clear_last_dialed_number(); 2853 } 2854 2855 void hfp_ag_set_last_dialed_number(const char * number){ 2856 hfp_gsm_set_last_dialed_number(number); 2857 } 2858 2859 uint8_t hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2860 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2861 if (!hfp_connection){ 2862 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2863 } 2864 2865 if (!hfp_connection->call_waiting_notification_enabled){ 2866 return ERROR_CODE_COMMAND_DISALLOWED; 2867 } 2868 2869 hfp_connection->ag_notify_incoming_call_waiting = 1; 2870 hfp_ag_run_for_context(hfp_connection); 2871 return ERROR_CODE_SUCCESS; 2872 } 2873 2874 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){ 2875 if (!name){ 2876 name = default_hfp_ag_service_name; 2877 } 2878 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2879 2880 /* 2881 * 0x01 – Ability to reject a call 2882 * 0x00 – No ability to reject a call 2883 */ 2884 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2885 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2886 2887 // Construct SupportedFeatures for SDP bitmap: 2888 // 2889 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2890 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2891 // 2892 // Wide band speech (bit 5) requires Codec negotiation 2893 // 2894 uint16_t sdp_features = supported_features & 0x1f; 2895 if ( (wide_band_speech == 1) && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2896 sdp_features |= 1 << 5; 2897 } 2898 2899 if (supported_features & (1 << HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2900 sdp_features |= 1 << 6; 2901 } 2902 2903 if (supported_features & (1 << HFP_AGSF_VOICE_RECOGNITION_TEXT)){ 2904 sdp_features |= 1 << 7; 2905 } 2906 2907 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2908 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2909 } 2910 2911 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2912 btstack_assert(callback != NULL); 2913 2914 hfp_ag_callback = callback; 2915 hfp_set_ag_callback(callback); 2916 } 2917