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