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 #define HFP_SUBEVENT_INVALID 0xFFFF 84 85 // const 86 static const char default_hfp_ag_service_name[] = "Voice gateway"; 87 88 // globals 89 static btstack_packet_callback_registration_t hfp_ag_hci_event_callback_registration; 90 91 static uint16_t hfp_supported_features; 92 93 static uint8_t hfp_codecs_nr; 94 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 95 96 static int hfp_ag_indicators_nr; 97 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_INDICATORS]; 98 99 static int hfp_generic_status_indicators_nr; 100 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_INDICATORS]; 101 102 static int hfp_ag_call_hold_services_nr; 103 static char *hfp_ag_call_hold_services[6]; 104 static btstack_packet_handler_t hfp_ag_callback; 105 106 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 107 static int hfp_ag_response_and_hold_active; 108 109 // Subscriber information entries 110 static hfp_phone_number_t * subscriber_numbers; 111 static int subscriber_numbers_count; 112 113 // code 114 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 115 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 116 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 117 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 118 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 119 } 120 return hfp_connection->ag_indicators_nr; 121 } 122 123 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 124 // TODO: save only value, and value changed in the hfp_connection? 125 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 126 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 127 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 128 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 129 } 130 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 131 } 132 133 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 134 int i; 135 for (i = 0; i < hfp_ag_indicators_nr; i++){ 136 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 137 return &hfp_ag_indicators[i]; 138 } 139 } 140 return NULL; 141 } 142 143 static int get_ag_indicator_index_for_name(const char * name){ 144 int i; 145 for (i = 0; i < hfp_ag_indicators_nr; i++){ 146 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 147 return i; 148 } 149 } 150 return -1; 151 } 152 153 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 154 btstack_linked_list_iterator_t it; 155 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 156 while (btstack_linked_list_iterator_has_next(&it)){ 157 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 158 if (hfp_connection->acl_handle != handle) continue; 159 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 160 return hfp_connection; 161 } 162 return NULL; 163 } 164 165 static int use_in_band_tone(void){ 166 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 167 } 168 169 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 170 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 171 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 172 return hf && ag; 173 } 174 175 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 176 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 177 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 178 return hf && ag; 179 } 180 181 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 182 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 183 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 184 return hf && ag; 185 } 186 187 /* unsolicited responses */ 188 189 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 190 char buffer[20]; 191 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", 192 HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 193 buffer[sizeof(buffer) - 1] = 0; 194 return send_str_over_rfcomm(cid, buffer); 195 } 196 197 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 198 char buffer[40]; 199 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n\r\nOK\r\n", 200 HFP_SUPPORTED_FEATURES, hfp_supported_features); 201 buffer[sizeof(buffer) - 1] = 0; 202 return send_str_over_rfcomm(cid, buffer); 203 } 204 205 static int hfp_ag_send_ok(uint16_t cid){ 206 char buffer[10]; 207 snprintf(buffer, sizeof(buffer), "\r\nOK\r\n"); 208 buffer[sizeof(buffer) - 1] = 0; 209 return send_str_over_rfcomm(cid, buffer); 210 } 211 212 static int hfp_ag_send_ring(uint16_t cid){ 213 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 214 } 215 216 static int hfp_ag_send_no_carrier(uint16_t cid){ 217 char buffer[15]; 218 snprintf(buffer, sizeof(buffer), "\r\nNO CARRIER\r\n"); 219 buffer[sizeof(buffer) - 1] = 0; 220 return send_str_over_rfcomm(cid, buffer); 221 } 222 223 static int hfp_ag_send_clip(uint16_t cid){ 224 char buffer[50]; 225 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, 226 hfp_gsm_clip_number(), hfp_gsm_clip_type()); 227 buffer[sizeof(buffer) - 1] = 0; 228 return send_str_over_rfcomm(cid, buffer); 229 } 230 231 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 232 char buffer[50]; 233 snprintf(buffer, sizeof(buffer), "\r\n%s: ,\"%s\",%u, , \r\n", 234 HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 235 buffer[sizeof(buffer) - 1] = 0; 236 return send_str_over_rfcomm(cid, buffer); 237 } 238 239 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 240 char buffer[50]; 241 snprintf(buffer, sizeof(buffer), "\r\n%s: %s\r\n", 242 HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 243 buffer[sizeof(buffer) - 1] = 0; 244 return send_str_over_rfcomm(cid, buffer); 245 } 246 247 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 248 char buffer[50]; 249 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", 250 HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), 251 hfp_gsm_clip_type()); 252 buffer[sizeof(buffer) - 1] = 0; 253 return send_str_over_rfcomm(cid, buffer); 254 } 255 256 static int hfp_ag_send_error(uint16_t cid){ 257 char buffer[10]; 258 snprintf(buffer, sizeof(buffer), "\r\nERROR\r\n"); 259 buffer[sizeof(buffer) - 1] = 0; 260 return send_str_over_rfcomm(cid, buffer); 261 } 262 263 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 264 char buffer[20]; 265 snprintf(buffer, sizeof(buffer), "\r\n%s=%d\r\n", 266 HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 267 buffer[sizeof(buffer) - 1] = 0; 268 return send_str_over_rfcomm(cid, buffer); 269 } 270 271 // get size for indicator string 272 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 273 // template: ("$NAME",($MIN,$MAX)) 274 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 275 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 276 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 277 } 278 279 // store indicator 280 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer, uint16_t buffer_size){ 281 snprintf((char *)buffer, buffer_size, "(\"%s\",(%d,%d)),", 282 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 283 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 284 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 285 ((char *)buffer)[buffer_size - 1] = 0; 286 } 287 288 // structure: header [indicator [comma indicator]] footer 289 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 290 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 291 if (!num_indicators) return 2; 292 return 3 + ((num_indicators-1) * 2); 293 } 294 295 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 296 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 297 if (index == 0) { 298 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 299 } 300 index--; 301 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 302 int indicator_index = index >> 1; 303 if ((index & 1) == 0){ 304 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 305 } 306 if (indicator_index == (num_indicators - 1)){ 307 return 8; // "\r\n\r\nOK\r\n" 308 } 309 return 1; // comma 310 } 311 312 static void hfp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer, uint16_t buffer_size){ 313 if (index == 0){ 314 *buffer++ = '\r'; 315 *buffer++ = '\n'; 316 int len = strlen(HFP_INDICATOR); 317 (void)memcpy(buffer, HFP_INDICATOR, len); 318 buffer += len; 319 *buffer++ = ':'; 320 return; 321 } 322 index--; 323 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 324 int indicator_index = index >> 1; 325 if ((index & 1) == 0){ 326 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer, buffer_size); 327 return; 328 } 329 if (indicator_index == (num_indicators-1)){ 330 (void)memcpy(buffer, "\r\n\r\nOK\r\n", 8); 331 return; 332 } 333 *buffer = ','; 334 } 335 336 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 337 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 338 int i; 339 int offset = 0; 340 for (i = 0; i < (hfp_generic_status_indicators_nr-1); i++) { 341 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 342 } 343 if (i < hfp_generic_status_indicators_nr){ 344 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_generic_status_indicators[i].uuid); 345 } 346 return offset; 347 } 348 349 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 350 if (buffer_size < (hfp_generic_status_indicators_nr * 3)) return 0; 351 int i; 352 int offset = 0; 353 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 354 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); 355 } 356 return offset; 357 } 358 359 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 360 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 361 int i; 362 int offset = 0; 363 for (i = 0; i < (hfp_ag_indicators_nr-1); i++) { 364 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 365 } 366 if (i<hfp_ag_indicators_nr){ 367 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 368 } 369 return offset; 370 } 371 372 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 373 if (buffer_size < (hfp_ag_call_hold_services_nr * 3)) return 0; 374 int i; 375 int offset = snprintf(buffer, buffer_size, "("); 376 for (i = 0; i < (hfp_ag_call_hold_services_nr-1); i++) { 377 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 378 } 379 if (i<hfp_ag_call_hold_services_nr){ 380 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 381 } 382 return offset; 383 } 384 385 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 386 int start_segment, int num_segments, 387 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 388 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer, uint16_t buffer_size)){ 389 390 // assumes: can send now == true 391 // assumes: num segments > 0 392 // assumes: individual segments are smaller than MTU 393 rfcomm_reserve_packet_buffer(); 394 int mtu = rfcomm_get_max_frame_size(cid); 395 uint8_t * data = rfcomm_get_outgoing_buffer(); 396 int offset = 0; 397 int segment = start_segment; 398 while (segment < num_segments){ 399 int segment_len = get_segment_len(hfp_connection, segment); 400 if ((offset + segment_len + 1) > mtu) break; 401 // append segment. As it appends a '\0', we provide a buffer one byte larger 402 store_segment(hfp_connection, segment, data+offset, segment_len + 1); 403 offset += segment_len; 404 segment++; 405 } 406 rfcomm_send_prepared(cid, offset); 407 #ifdef ENABLE_HFP_AT_MESSAGES 408 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_SENT, (char *) data); 409 #endif 410 return segment; 411 } 412 413 // returns next segment to store 414 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 415 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 416 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 417 hfp_ag_indicators_cmd_generator_get_segment_len, 418 hfp_ag_indicators_cmd_generator_store_segment); 419 } 420 421 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 422 char buffer[40]; 423 const int size = sizeof(buffer); 424 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 425 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 426 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 427 return send_str_over_rfcomm(cid, buffer); 428 } 429 430 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 431 char buffer[40]; 432 const int size = sizeof(buffer); 433 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 434 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 435 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 436 return send_str_over_rfcomm(cid, buffer); 437 } 438 439 440 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 441 return hfp_ag_send_ok(cid); 442 } 443 444 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 445 char buffer[40]; 446 const int size = sizeof(buffer); 447 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 448 offset += hfp_hf_indicators_join(buffer+offset, size-offset-10); 449 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 450 return send_str_over_rfcomm(cid, buffer); 451 } 452 453 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 454 char buffer[40]; 455 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 456 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 457 return send_str_over_rfcomm(cid, buffer); 458 } 459 460 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 461 char buffer[20]; 462 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d\r\n", 463 HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, 464 indicator->status); 465 buffer[sizeof(buffer) - 1] = 0; 466 return send_str_over_rfcomm(cid, buffer); 467 } 468 469 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 470 char buffer[41]; 471 if (strlen(op.name) == 0){ 472 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 473 } else { 474 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 475 offset += snprintf(buffer+offset, 16, "%s", op.name); 476 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 477 } 478 return send_str_over_rfcomm(cid, buffer); 479 } 480 481 static inline int hfp_ag_send_cmd_with_space_and_int(uint16_t cid, const char * cmd, uint8_t value){ 482 char buffer[30]; 483 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", cmd, value); 484 return send_str_over_rfcomm(cid, buffer); 485 } 486 487 488 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 489 char buffer[30]; 490 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 491 return send_str_over_rfcomm(cid, buffer); 492 } 493 494 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 495 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 496 } 497 498 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 499 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 500 } 501 502 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 503 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 504 } 505 506 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 507 return hfp_ag_send_cmd_with_space_and_int(cid, HFP_RESPONSE_AND_HOLD, state); 508 } 509 510 static int hfp_ag_send_enhanced_voice_recognition_state_cmd(hfp_connection_t * hfp_connection){ 511 char buffer[30]; 512 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); 513 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 514 } 515 516 static int hfp_ag_send_voice_recognition_cmd(hfp_connection_t * hfp_connection, uint8_t activate_voice_recognition){ 517 char buffer[30]; 518 if (hfp_connection->enhanced_voice_recognition_enabled){ 519 snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition, hfp_connection->ag_vra_state); 520 } else { 521 snprintf(buffer, sizeof(buffer), "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 522 } 523 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 524 } 525 526 static int hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection_t * hfp_connection){ 527 char buffer[100]; 528 snprintf(buffer, sizeof(buffer), "\r\n%s: 1,%d,%X,%d,%d,\"%s\"\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, 529 hfp_connection->ag_vra_state, 530 hfp_connection->ag_msg.text_id, 531 hfp_connection->ag_msg.text_type, 532 hfp_connection->ag_msg.text_operation, 533 hfp_connection->ag_msg.text); 534 return send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 535 } 536 537 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 538 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 539 540 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 541 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 542 return HFP_CODEC_MSBC; 543 } 544 } 545 return HFP_CODEC_CVSD; 546 } 547 548 /* state machines */ 549 550 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 551 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4)); 552 } 553 554 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 555 /* events ( == commands): 556 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 557 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 558 hf_trigger_codec_connection_setup == received BCC 559 ag_trigger_codec_connection_setup == received from AG to send BCS 560 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 561 */ 562 switch (hfp_connection->codecs_state){ 563 case HFP_CODECS_EXCHANGED: 564 if (hfp_connection->command == HFP_CMD_AVAILABLE_CODECS){ 565 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 566 return 1; 567 } 568 break; 569 570 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 571 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 572 break; 573 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 574 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 575 break; 576 default: 577 break; 578 } 579 580 switch (hfp_connection->command){ 581 case HFP_CMD_AVAILABLE_CODECS: 582 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 583 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 584 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 585 return 1; 586 } 587 588 switch (hfp_connection->codecs_state){ 589 case HFP_CODECS_AG_SENT_COMMON_CODEC: 590 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 591 break; 592 default: 593 break; 594 } 595 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 596 return 1; 597 598 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 599 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 600 hfp_connection->establish_audio_connection = 1; 601 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 602 return 1; 603 604 case HFP_CMD_AG_SEND_COMMON_CODEC: 605 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 606 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 607 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 608 return 1; 609 610 case HFP_CMD_HF_CONFIRMED_CODEC: 611 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 612 hfp_connection->codecs_state = HFP_CODECS_ERROR; 613 hfp_ag_send_error(hfp_connection->rfcomm_cid); 614 return 1; 615 } 616 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 617 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 618 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 619 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 620 // now, pick link settings 621 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 622 #ifdef ENABLE_CC256X_ASSISTED_HFP 623 hfp_cc256x_prepare_for_sco(hfp_connection); 624 #endif 625 return 1; 626 default: 627 break; 628 } 629 return 0; 630 } 631 632 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 633 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 634 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 635 636 // if active call exist, set per-hfp_connection state active, too (when audio is on) 637 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 638 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 639 } 640 // if AG is ringing, also start ringing on the HF 641 if ((hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS) && 642 (hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS)){ 643 hfp_ag_hf_start_ringing(hfp_connection); 644 } 645 } 646 647 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 648 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 649 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 650 int sent = 0; 651 switch(hfp_connection->command){ 652 case HFP_CMD_SUPPORTED_FEATURES: 653 switch(hfp_connection->state){ 654 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 655 case HFP_EXCHANGE_SUPPORTED_FEATURES: 656 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 657 if (has_codec_negotiation_feature(hfp_connection)){ 658 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 659 } else { 660 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 661 } 662 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 663 return 1; 664 default: 665 break; 666 } 667 break; 668 case HFP_CMD_AVAILABLE_CODECS: 669 sent = codecs_exchange_state_machine(hfp_connection); 670 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 671 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 672 } 673 return sent; 674 675 case HFP_CMD_RETRIEVE_AG_INDICATORS: 676 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 677 // HF requested AG Indicators and we did expect it 678 hfp_connection->send_ag_indicators_segment = 0; 679 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 680 // continue below in state switch 681 } 682 break; 683 684 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 685 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 686 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 687 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 688 return 1; 689 690 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 691 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 692 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 693 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 694 } else if (has_hf_indicators_feature(hfp_connection)){ 695 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 696 } else { 697 hfp_ag_slc_established(hfp_connection); 698 } 699 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 700 return 1; 701 702 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 703 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 704 if (has_hf_indicators_feature(hfp_connection)){ 705 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 706 } 707 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 708 if (!has_hf_indicators_feature(hfp_connection)){ 709 hfp_ag_slc_established(hfp_connection); 710 } 711 return 1; 712 713 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 714 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 715 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 716 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 717 return 1; 718 719 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 720 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 721 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 722 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 723 return 1; 724 725 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 726 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 727 hfp_ag_slc_established(hfp_connection); 728 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 729 return 1; 730 default: 731 break; 732 } 733 734 switch (hfp_connection->state){ 735 case HFP_RETRIEVE_INDICATORS: { 736 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 737 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 738 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 739 if (next_segment < num_segments){ 740 // prepare sending of next segment 741 hfp_connection->send_ag_indicators_segment = next_segment; 742 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 743 } else { 744 // done, go to next state 745 hfp_connection->send_ag_indicators_segment = 0; 746 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 747 } 748 return 1; 749 } 750 default: 751 break; 752 } 753 return 0; 754 } 755 756 static bool hfp_ag_voice_recognition_supported(hfp_connection_t * hfp_connection, bool enhanced){ 757 uint8_t ag_vra_flag = HFP_AGSF_VOICE_RECOGNITION_FUNCTION; 758 uint8_t hf_vra_flag = HFP_HFSF_VOICE_RECOGNITION_FUNCTION; 759 760 if (enhanced){ 761 ag_vra_flag = HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS; 762 hf_vra_flag = HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS; 763 } 764 765 int ag = get_bit(hfp_supported_features, ag_vra_flag); 766 int hf = get_bit(hfp_connection->remote_supported_features, hf_vra_flag); 767 return hf && ag; 768 } 769 770 static uint8_t hfp_ag_can_activate_voice_recognition(hfp_connection_t * hfp_connection, bool enhanced){ 771 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 772 return ERROR_CODE_COMMAND_DISALLOWED; 773 } 774 if (!hfp_ag_voice_recognition_supported(hfp_connection, enhanced)){ 775 return ERROR_CODE_COMMAND_DISALLOWED; 776 } 777 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_OFF){ 778 return ERROR_CODE_COMMAND_DISALLOWED; 779 } 780 return ERROR_CODE_SUCCESS; 781 } 782 783 static uint8_t hfp_ag_voice_recognition_session_active(hfp_connection_t * hfp_connection, bool enhanced){ 784 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 785 return ERROR_CODE_COMMAND_DISALLOWED; 786 } 787 if (!hfp_ag_voice_recognition_supported(hfp_connection, enhanced)){ 788 return ERROR_CODE_COMMAND_DISALLOWED; 789 } 790 if (hfp_connection->vra_state != HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 791 if (hfp_connection->vra_state == HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO){ 792 return ERROR_CODE_SUCCESS; 793 } 794 return ERROR_CODE_COMMAND_DISALLOWED; 795 } 796 return ERROR_CODE_SUCCESS; 797 } 798 799 static bool hfp_ag_can_send_enahnced_voice_recognition_message(hfp_connection_t * hfp_connection, bool enhanced){ 800 if (hfp_ag_voice_recognition_session_active(hfp_connection, enhanced) == ERROR_CODE_SUCCESS){ 801 int ag = get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_TEXT); 802 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_TEXT); 803 return hf && ag; 804 } 805 return false; 806 } 807 808 static bool hfp_ag_is_audio_connection_active(hfp_connection_t * hfp_connection){ 809 switch (hfp_connection->state){ 810 case HFP_W2_CONNECT_SCO: 811 case HFP_W4_SCO_CONNECTED: 812 case HFP_AUDIO_CONNECTION_ESTABLISHED: 813 return true; 814 default: 815 return false; 816 } 817 } 818 819 static void hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection_t * hfp_connection, uint8_t status){ 820 hci_con_handle_t acl_handle = (hfp_connection != NULL) ? hfp_connection->acl_handle : HCI_CON_HANDLE_INVALID; 821 822 uint8_t event[6]; 823 event[0] = HCI_EVENT_HFP_META; 824 event[1] = sizeof(event) - 2; 825 event[2] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE_SENT; 826 little_endian_store_16(event, 3, acl_handle); 827 event[5] = status; 828 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 829 } 830 831 832 static void hfp_ag_emit_hf_indicator_value(hfp_connection_t * hfp_connection, uint16_t uuid, uint8_t value){ 833 hci_con_handle_t acl_handle = (hfp_connection != NULL) ? hfp_connection->acl_handle : HCI_CON_HANDLE_INVALID; 834 835 uint8_t event[8]; 836 event[0] = HCI_EVENT_HFP_META; 837 event[1] = sizeof(event) - 2; 838 event[2] = HFP_SUBEVENT_HF_INDICATOR; 839 little_endian_store_16(event, 3, acl_handle); 840 little_endian_store_16(event, 5, uuid); 841 event[7] = value; 842 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 843 } 844 845 static int hfp_ag_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 846 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 847 return 0; 848 } 849 int done = 0; 850 uint8_t status; 851 852 switch (hfp_connection->command){ 853 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 854 switch (hfp_connection->vra_state_requested){ 855 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_MSG: 856 done = hfp_ag_send_enhanced_voice_recognition_msg_cmd(hfp_connection); 857 if (done == 0){ 858 hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 859 } else { 860 hfp_ag_emit_enhanced_voice_recognition_msg_sent_event(hfp_connection, ERROR_CODE_SUCCESS); 861 } 862 hfp_connection->vra_state_requested = hfp_connection->vra_state; 863 return done; 864 865 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_STATUS: 866 done = hfp_ag_send_enhanced_voice_recognition_state_cmd(hfp_connection); 867 if (done == 0){ 868 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 869 } else { 870 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 871 } 872 hfp_connection->vra_state_requested = hfp_connection->vra_state; 873 return done; 874 875 default: 876 done = hfp_ag_send_voice_recognition_cmd(hfp_connection, hfp_connection->ag_activate_voice_recognition_value); 877 if (done == 0){ 878 hfp_connection->vra_state_requested = hfp_connection->vra_state; 879 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_COMMAND_DISALLOWED); 880 return 0; 881 } 882 break; 883 } 884 break; 885 886 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 887 // HF initiatied voice recognition, parser extracted activation value 888 switch (hfp_connection->ag_activate_voice_recognition_value){ 889 case 0: 890 if (hfp_ag_voice_recognition_session_active(hfp_connection, hfp_connection->enhanced_voice_recognition_enabled) == ERROR_CODE_SUCCESS){ 891 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 892 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 893 } 894 break; 895 896 case 1: 897 if (hfp_ag_can_activate_voice_recognition(hfp_connection, hfp_connection->enhanced_voice_recognition_enabled) == ERROR_CODE_SUCCESS){ 898 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 899 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 900 } 901 break; 902 903 case 2: 904 if (hfp_ag_voice_recognition_session_active(hfp_connection, hfp_connection->enhanced_voice_recognition_enabled) == ERROR_CODE_SUCCESS){ 905 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 906 done = hfp_ag_send_ok(hfp_connection->rfcomm_cid); 907 } 908 break; 909 default: 910 break; 911 } 912 if (done == 0){ 913 hfp_connection->vra_state_requested = hfp_connection->vra_state; 914 done = hfp_ag_send_error(hfp_connection->rfcomm_cid); 915 return 1; 916 } 917 break; 918 919 default: 920 return 0; 921 } 922 923 switch (hfp_connection->vra_state_requested){ 924 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 925 if (!hfp_ag_is_audio_connection_active(hfp_connection)){ 926 status = hfp_ag_setup_audio_connection(hfp_connection); 927 if (status != ERROR_CODE_SUCCESS){ 928 hfp_connection->vra_state_requested = hfp_connection->vra_state; 929 hfp_emit_voice_recognition_state_event(hfp_connection, status); 930 return 0; 931 } 932 } 933 hfp_connection->enhanced_voice_recognition_enabled = true; 934 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 935 hfp_connection->vra_state_requested = hfp_connection->vra_state; 936 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 937 break; 938 939 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 940 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 941 hfp_connection->vra_state_requested = hfp_connection->vra_state; 942 943 // release audio connection only if it was opened after audio VR activated 944 if (hfp_ag_is_audio_connection_active(hfp_connection) && !hfp_connection->ag_audio_connection_opened_before_vra){ 945 hfp_trigger_release_audio_connection(hfp_connection); 946 } 947 948 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 949 break; 950 951 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 952 // open only if audio connection does not already exist 953 if (!hfp_ag_is_audio_connection_active(hfp_connection)){ 954 status = hfp_ag_setup_audio_connection(hfp_connection); 955 if (status != ERROR_CODE_SUCCESS){ 956 hfp_connection->vra_state_requested = hfp_connection->vra_state; 957 hfp_emit_voice_recognition_state_event(hfp_connection, status); 958 return 0; 959 } 960 } 961 962 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 963 hfp_connection->vra_state_requested = hfp_connection->vra_state; 964 hfp_emit_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 965 break; 966 967 default: 968 break; 969 } 970 return done; 971 } 972 973 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 974 int sent = codecs_exchange_state_machine(hfp_connection); 975 if (sent) return 1; 976 977 switch(hfp_connection->command){ 978 979 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 980 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 981 return 1; 982 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 983 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 984 return 1; 985 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 986 if (hfp_connection->network_operator.format != 0){ 987 hfp_ag_send_error(hfp_connection->rfcomm_cid); 988 } else { 989 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 990 } 991 return 1; 992 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 993 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 994 return 1; 995 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 996 if (hfp_connection->extended_audio_gateway_error){ 997 hfp_connection->extended_audio_gateway_error = 0; 998 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 999 return 1; 1000 } 1001 break; 1002 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 1003 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1004 return 1; 1005 default: 1006 break; 1007 } 1008 return 0; 1009 } 1010 1011 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 1012 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 1013 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 1014 1015 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1016 1017 if (hfp_connection->release_audio_connection){ 1018 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 1019 hfp_connection->release_audio_connection = 0; 1020 gap_disconnect(hfp_connection->sco_handle); 1021 return 1; 1022 } 1023 1024 // accept incoming audio connection (codec negotiation is not used) 1025 if (hfp_connection->accept_sco){ 1026 // notify about codec selection if not done already 1027 if (hfp_connection->negotiated_codec == 0){ 1028 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 1029 } 1030 // 1031 bool incoming_eSCO = hfp_connection->accept_sco == 2; 1032 hfp_connection->accept_sco = 0; 1033 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1034 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 1035 return 1; 1036 } 1037 1038 // run codecs exchange 1039 int sent = codecs_exchange_state_machine(hfp_connection); 1040 if (sent) return 1; 1041 1042 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 1043 if (hfp_connection->establish_audio_connection){ 1044 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1045 hfp_connection->establish_audio_connection = 0; 1046 hfp_setup_synchronous_connection(hfp_connection); 1047 return 1; 1048 } 1049 return 0; 1050 } 1051 1052 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 1053 btstack_linked_list_iterator_t it; 1054 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1055 1056 while (btstack_linked_list_iterator_has_next(&it)){ 1057 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1058 if ( & hfp_connection->hfp_timeout == ts) { 1059 return hfp_connection; 1060 } 1061 } 1062 return NULL; 1063 } 1064 1065 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 1066 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 1067 if (!hfp_connection) return; 1068 1069 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 1070 hfp_connection->ag_ring = 1; 1071 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1072 1073 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 1074 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 1075 1076 hfp_ag_run_for_context(hfp_connection); 1077 } 1078 1079 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 1080 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 1081 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 1082 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 1083 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 1084 } 1085 1086 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 1087 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 1088 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 1089 } 1090 1091 static void hfp_ag_set_callsetup_indicator(void){ 1092 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1093 if (!indicator){ 1094 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1095 return; 1096 }; 1097 indicator->status = hfp_gsm_callsetup_status(); 1098 } 1099 1100 static void hfp_ag_set_callheld_indicator(void){ 1101 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1102 if (!indicator){ 1103 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1104 return; 1105 }; 1106 indicator->status = hfp_gsm_callheld_status(); 1107 } 1108 1109 // 1110 // transitition implementations for hfp_ag_call_state_machine 1111 // 1112 1113 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 1114 if (use_in_band_tone()){ 1115 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 1116 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1117 } else { 1118 hfp_timeout_start(hfp_connection); 1119 hfp_connection->ag_ring = 1; 1120 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1121 hfp_connection->call_state = HFP_CALL_RINGING; 1122 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1123 } 1124 } 1125 1126 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 1127 hfp_connection->ag_ring = 0; 1128 hfp_connection->ag_send_clip = 0; 1129 hfp_timeout_stop(hfp_connection); 1130 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 1131 } 1132 1133 static void hfp_ag_trigger_incoming_call(void){ 1134 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 1135 if (indicator_index < 0) return; 1136 1137 btstack_linked_list_iterator_t it; 1138 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1139 while (btstack_linked_list_iterator_has_next(&it)){ 1140 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1141 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1142 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1143 if (hfp_connection->call_state == HFP_CALL_IDLE){ 1144 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1145 hfp_ag_hf_start_ringing(hfp_connection); 1146 } 1147 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 1148 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 1149 } 1150 hfp_ag_run_for_context(hfp_connection); 1151 } 1152 } 1153 1154 static void hfp_ag_trigger_outgoing_call(void){ 1155 btstack_linked_list_iterator_t it; 1156 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1157 while (btstack_linked_list_iterator_has_next(&it)){ 1158 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1159 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1160 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1161 if (hfp_connection->call_state == HFP_CALL_IDLE){ 1162 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1163 } 1164 } 1165 } 1166 1167 static void hfp_ag_handle_outgoing_call_accepted(hfp_connection_t * hfp_connection){ 1168 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1169 1170 // trigger callsetup to be 1171 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1172 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1173 1174 int indicator_index ; 1175 1176 hfp_ag_set_callsetup_indicator(); 1177 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1178 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1179 1180 // put current call on hold if active 1181 if (put_call_on_hold){ 1182 log_info("AG putting current call on hold for new outgoing call"); 1183 hfp_ag_set_callheld_indicator(); 1184 indicator_index = get_ag_indicator_index_for_name("callheld"); 1185 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1186 } 1187 1188 // start audio if needed 1189 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1190 } 1191 1192 static void hfp_ag_transfer_indicator(const char * name){ 1193 int indicator_index = get_ag_indicator_index_for_name(name); 1194 if (indicator_index < 0) return; 1195 1196 btstack_linked_list_iterator_t it; 1197 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1198 while (btstack_linked_list_iterator_has_next(&it)){ 1199 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1200 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1201 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1202 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1203 hfp_ag_run_for_context(hfp_connection); 1204 } 1205 } 1206 1207 static void hfp_ag_transfer_callsetup_state(void){ 1208 hfp_ag_transfer_indicator("callsetup"); 1209 } 1210 1211 static void hfp_ag_transfer_call_state(void){ 1212 hfp_ag_transfer_indicator("call"); 1213 } 1214 1215 static void hfp_ag_transfer_callheld_state(void){ 1216 hfp_ag_transfer_indicator("callheld"); 1217 } 1218 1219 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 1220 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1221 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1222 1223 btstack_linked_list_iterator_t it; 1224 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1225 while (btstack_linked_list_iterator_has_next(&it)){ 1226 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1227 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1228 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1229 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1230 1231 hfp_ag_hf_stop_ringing(hfp_connection); 1232 if (hfp_connection == source){ 1233 1234 if (use_in_band_tone()){ 1235 hfp_connection->call_state = HFP_CALL_ACTIVE; 1236 } else { 1237 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 1238 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1239 } 1240 1241 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1242 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1243 1244 } else { 1245 hfp_connection->call_state = HFP_CALL_IDLE; 1246 } 1247 hfp_ag_run_for_context(hfp_connection); 1248 } 1249 } 1250 1251 static void hfp_ag_ag_accept_call(void){ 1252 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1253 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1254 1255 btstack_linked_list_iterator_t it; 1256 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1257 while (btstack_linked_list_iterator_has_next(&it)){ 1258 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1259 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1260 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 1261 1262 hfp_ag_hf_stop_ringing(hfp_connection); 1263 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1264 1265 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1266 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1267 1268 hfp_ag_run_for_context(hfp_connection); 1269 break; // only single 1270 } 1271 } 1272 1273 static void hfp_ag_trigger_reject_call(void){ 1274 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1275 btstack_linked_list_iterator_t it; 1276 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1277 while (btstack_linked_list_iterator_has_next(&it)){ 1278 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1279 if (connection->local_role != HFP_ROLE_AG) continue; 1280 if ((connection->call_state != HFP_CALL_RINGING) && 1281 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1282 hfp_ag_hf_stop_ringing(connection); 1283 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1284 connection->call_state = HFP_CALL_IDLE; 1285 hfp_ag_run_for_context(connection); 1286 } 1287 } 1288 1289 static void hfp_ag_trigger_terminate_call(void){ 1290 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1291 1292 btstack_linked_list_iterator_t it; 1293 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1294 while (btstack_linked_list_iterator_has_next(&it)){ 1295 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1296 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1297 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1298 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1299 hfp_connection->call_state = HFP_CALL_IDLE; 1300 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1301 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1302 hfp_connection->release_audio_connection = 1; 1303 } 1304 hfp_ag_run_for_context(hfp_connection); 1305 } 1306 hfp_emit_simple_event(NULL, HFP_SUBEVENT_CALL_TERMINATED); 1307 } 1308 1309 static void hfp_ag_set_call_indicator(void){ 1310 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1311 if (!indicator){ 1312 log_error("hfp_ag_set_call_state: call indicator is missing"); 1313 return; 1314 }; 1315 indicator->status = hfp_gsm_call_status(); 1316 } 1317 1318 static void hfp_ag_stop_ringing(void){ 1319 btstack_linked_list_iterator_t it; 1320 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1321 while (btstack_linked_list_iterator_has_next(&it)){ 1322 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1323 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1324 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1325 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1326 hfp_ag_hf_stop_ringing(hfp_connection); 1327 } 1328 } 1329 1330 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1331 btstack_linked_list_iterator_t it; 1332 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1333 while (btstack_linked_list_iterator_has_next(&it)){ 1334 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1335 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1336 if (hfp_connection->call_state == call_state) return hfp_connection; 1337 } 1338 return NULL; 1339 } 1340 1341 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1342 btstack_linked_list_iterator_t it; 1343 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1344 while (btstack_linked_list_iterator_has_next(&it)){ 1345 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1346 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1347 hfp_connection->send_response_and_hold_status = state + 1; 1348 } 1349 } 1350 1351 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1352 int indicator_index; 1353 switch (hfp_connection->call_state){ 1354 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1355 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1356 // we got event: audio hfp_connection established 1357 hfp_timeout_start(hfp_connection); 1358 hfp_connection->ag_ring = 1; 1359 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1360 hfp_connection->call_state = HFP_CALL_RINGING; 1361 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1362 break; 1363 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1364 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1365 // we got event: audio hfp_connection established 1366 hfp_connection->call_state = HFP_CALL_ACTIVE; 1367 break; 1368 case HFP_CALL_W2_SEND_CALL_WAITING: 1369 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1370 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1371 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1372 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1373 break; 1374 default: 1375 break; 1376 } 1377 return 0; 1378 } 1379 1380 // functions extracted from hfp_ag_call_sm below 1381 static void hfp_ag_handle_reject_outgoing_call(void){ 1382 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1383 if (!hfp_connection){ 1384 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1385 return; 1386 } 1387 1388 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1389 hfp_connection->call_state = HFP_CALL_IDLE; 1390 hfp_connection->send_error = 1; 1391 hfp_ag_run_for_context(hfp_connection); 1392 } 1393 1394 // hfp_connection is used to identify originating HF 1395 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1396 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1397 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1398 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1399 1400 switch (event){ 1401 case HFP_AG_INCOMING_CALL: 1402 switch (hfp_gsm_call_status()){ 1403 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1404 switch (hfp_gsm_callsetup_status()){ 1405 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1406 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1407 hfp_ag_set_callsetup_indicator(); 1408 hfp_ag_trigger_incoming_call(); 1409 log_info("AG rings"); 1410 break; 1411 default: 1412 break; 1413 } 1414 break; 1415 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1416 switch (hfp_gsm_callsetup_status()){ 1417 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1418 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1419 hfp_ag_set_callsetup_indicator(); 1420 hfp_ag_trigger_incoming_call(); 1421 log_info("AG call waiting"); 1422 break; 1423 default: 1424 break; 1425 } 1426 break; 1427 default: 1428 break; 1429 } 1430 break; 1431 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1432 switch (hfp_gsm_call_status()){ 1433 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1434 switch (hfp_gsm_callsetup_status()){ 1435 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1436 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1437 hfp_ag_set_call_indicator(); 1438 hfp_ag_set_callsetup_indicator(); 1439 hfp_ag_ag_accept_call(); 1440 log_info("AG answers call, accept call by GSM"); 1441 break; 1442 default: 1443 break; 1444 } 1445 break; 1446 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1447 switch (hfp_gsm_callsetup_status()){ 1448 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1449 log_info("AG: current call is placed on hold, incoming call gets active"); 1450 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1451 hfp_ag_set_callsetup_indicator(); 1452 hfp_ag_set_callheld_indicator(); 1453 hfp_ag_transfer_callsetup_state(); 1454 hfp_ag_transfer_callheld_state(); 1455 break; 1456 default: 1457 break; 1458 } 1459 break; 1460 default: 1461 break; 1462 } 1463 break; 1464 1465 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1466 switch (hfp_gsm_call_status()){ 1467 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1468 switch (hfp_gsm_callheld_status()){ 1469 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1470 log_info("AG: joining held call with active call"); 1471 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1472 hfp_ag_set_callheld_indicator(); 1473 hfp_ag_transfer_callheld_state(); 1474 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1475 break; 1476 default: 1477 break; 1478 } 1479 break; 1480 default: 1481 break; 1482 } 1483 break; 1484 1485 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1486 switch (hfp_gsm_call_status()){ 1487 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1488 switch (hfp_gsm_callsetup_status()){ 1489 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1490 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1491 hfp_ag_set_callsetup_indicator(); 1492 hfp_ag_set_call_indicator(); 1493 hfp_ag_hf_accept_call(hfp_connection); 1494 hfp_connection->ok_pending = 1; 1495 log_info("HF answers call, accept call by GSM"); 1496 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1497 break; 1498 default: 1499 break; 1500 } 1501 break; 1502 default: 1503 break; 1504 } 1505 break; 1506 1507 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1508 switch (hfp_gsm_call_status()){ 1509 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1510 switch (hfp_gsm_callsetup_status()){ 1511 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1512 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1513 hfp_ag_response_and_hold_active = 1; 1514 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1515 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1516 // as with regular call 1517 hfp_ag_set_call_indicator(); 1518 hfp_ag_set_callsetup_indicator(); 1519 hfp_ag_ag_accept_call(); 1520 log_info("AG response and hold - hold by AG"); 1521 break; 1522 default: 1523 break; 1524 } 1525 break; 1526 default: 1527 break; 1528 } 1529 break; 1530 1531 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1532 switch (hfp_gsm_call_status()){ 1533 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1534 switch (hfp_gsm_callsetup_status()){ 1535 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1536 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1537 hfp_ag_response_and_hold_active = 1; 1538 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1539 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1540 // as with regular call 1541 hfp_ag_set_call_indicator(); 1542 hfp_ag_set_callsetup_indicator(); 1543 hfp_ag_hf_accept_call(hfp_connection); 1544 log_info("AG response and hold - hold by HF"); 1545 break; 1546 default: 1547 break; 1548 } 1549 break; 1550 default: 1551 break; 1552 } 1553 break; 1554 1555 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1556 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1557 if (!hfp_ag_response_and_hold_active) break; 1558 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1559 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1560 hfp_ag_response_and_hold_active = 0; 1561 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1562 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1563 log_info("Held Call accepted and active"); 1564 break; 1565 1566 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1567 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1568 if (!hfp_ag_response_and_hold_active) break; 1569 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1570 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1571 hfp_ag_response_and_hold_active = 0; 1572 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1573 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1574 // from terminate by ag 1575 hfp_ag_set_call_indicator(); 1576 hfp_ag_trigger_terminate_call(); 1577 break; 1578 1579 case HFP_AG_TERMINATE_CALL_BY_HF: 1580 switch (hfp_gsm_call_status()){ 1581 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1582 switch (hfp_gsm_callsetup_status()){ 1583 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1584 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1585 hfp_ag_set_callsetup_indicator(); 1586 hfp_ag_transfer_callsetup_state(); 1587 hfp_ag_trigger_reject_call(); 1588 log_info("HF Rejected Incoming call, AG terminate call"); 1589 break; 1590 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1591 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1592 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1593 hfp_ag_set_callsetup_indicator(); 1594 hfp_ag_transfer_callsetup_state(); 1595 log_info("AG terminate outgoing call process"); 1596 break; 1597 default: 1598 break; 1599 } 1600 break; 1601 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1602 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1603 hfp_ag_set_callsetup_indicator(); 1604 hfp_ag_set_call_indicator(); 1605 hfp_ag_trigger_terminate_call(); 1606 log_info("AG terminate call"); 1607 break; 1608 default: 1609 break; 1610 } 1611 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1612 break; 1613 1614 case HFP_AG_TERMINATE_CALL_BY_AG: 1615 switch (hfp_gsm_call_status()){ 1616 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1617 switch (hfp_gsm_callsetup_status()){ 1618 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1619 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1620 hfp_ag_set_callsetup_indicator(); 1621 hfp_ag_trigger_reject_call(); 1622 log_info("AG Rejected Incoming call, AG terminate call"); 1623 break; 1624 default: 1625 break; 1626 } 1627 break; 1628 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1629 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1630 hfp_ag_set_callsetup_indicator(); 1631 hfp_ag_set_call_indicator(); 1632 hfp_ag_trigger_terminate_call(); 1633 log_info("AG terminate call"); 1634 break; 1635 default: 1636 break; 1637 } 1638 break; 1639 case HFP_AG_CALL_DROPPED: 1640 switch (hfp_gsm_call_status()){ 1641 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1642 switch (hfp_gsm_callsetup_status()){ 1643 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1644 hfp_ag_stop_ringing(); 1645 log_info("Incoming call interrupted"); 1646 break; 1647 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1648 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1649 log_info("Outgoing call interrupted\n"); 1650 log_info("AG notify call dropped\n"); 1651 break; 1652 default: 1653 break; 1654 } 1655 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1656 hfp_ag_set_callsetup_indicator(); 1657 hfp_ag_transfer_callsetup_state(); 1658 hfp_ag_trigger_terminate_call(); 1659 break; 1660 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1661 if (hfp_ag_response_and_hold_active) { 1662 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1663 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1664 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1665 } 1666 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1667 hfp_ag_set_callsetup_indicator(); 1668 hfp_ag_set_call_indicator(); 1669 hfp_ag_trigger_terminate_call(); 1670 log_info("AG notify call dropped"); 1671 break; 1672 default: 1673 break; 1674 } 1675 break; 1676 1677 case HFP_AG_OUTGOING_CALL_INITIATED_BY_HF: 1678 // directly reject call if number of free slots is exceeded 1679 if (!hfp_gsm_call_possible()){ 1680 hfp_connection->send_error = 1; 1681 hfp_ag_run_for_context(hfp_connection); 1682 break; 1683 } 1684 1685 // note: number not used currently 1686 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1687 1688 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1689 1690 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1691 break; 1692 1693 case HFP_AG_OUTGOING_CALL_INITIATED_BY_AG: 1694 // directly reject call if number of free slots is exceeded 1695 if (!hfp_gsm_call_possible()) { 1696 // TODO: no error for user 1697 break; 1698 } 1699 switch (hfp_gsm_call_status()) { 1700 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1701 switch (hfp_gsm_callsetup_status()) { 1702 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1703 // note: number not used currently 1704 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, 0, 0, "1234567"); 1705 // init call state for all connections 1706 hfp_ag_trigger_outgoing_call(); 1707 // get first one and accept call 1708 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1709 if (hfp_connection) { 1710 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1711 } 1712 break; 1713 default: 1714 // TODO: no error for user 1715 break; 1716 } 1717 break; 1718 default: 1719 // TODO: no error for user 1720 break; 1721 } 1722 break; 1723 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1724 // directly reject call if number of free slots is exceeded 1725 if (!hfp_gsm_call_possible()){ 1726 hfp_connection->send_error = 1; 1727 hfp_ag_run_for_context(hfp_connection); 1728 break; 1729 } 1730 1731 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1732 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1733 1734 log_info("Redial last number"); 1735 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1736 1737 if (strlen(last_dialed_number) > 0){ 1738 log_info("Last number exists: accept call"); 1739 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1740 } else { 1741 log_info("log_infoLast number missing: reject call"); 1742 hfp_ag_handle_reject_outgoing_call(); 1743 } 1744 break; 1745 } 1746 case HFP_AG_OUTGOING_CALL_REJECTED: 1747 hfp_ag_handle_reject_outgoing_call(); 1748 break; 1749 1750 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1751 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1752 if (!hfp_connection){ 1753 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1754 break; 1755 } 1756 1757 hfp_connection->ok_pending = 1; 1758 hfp_ag_handle_outgoing_call_accepted(hfp_connection); 1759 break; 1760 } 1761 case HFP_AG_OUTGOING_CALL_RINGING: 1762 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1763 if (!hfp_connection){ 1764 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1765 break; 1766 } 1767 1768 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1769 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1770 hfp_ag_set_callsetup_indicator(); 1771 hfp_ag_transfer_callsetup_state(); 1772 break; 1773 1774 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1775 // get outgoing call 1776 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1777 if (!hfp_connection){ 1778 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1779 } 1780 if (!hfp_connection){ 1781 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1782 break; 1783 } 1784 1785 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1786 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1787 hfp_connection->call_state = HFP_CALL_ACTIVE; 1788 hfp_ag_set_callsetup_indicator(); 1789 hfp_ag_set_call_indicator(); 1790 hfp_ag_transfer_call_state(); 1791 hfp_ag_transfer_callsetup_state(); 1792 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1793 hfp_ag_set_callheld_indicator(); 1794 hfp_ag_transfer_callheld_state(); 1795 } 1796 break; 1797 } 1798 1799 case HFP_AG_CALL_HOLD_USER_BUSY: 1800 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1801 hfp_ag_set_callsetup_indicator(); 1802 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1803 hfp_connection->call_state = HFP_CALL_ACTIVE; 1804 log_info("AG: Call Waiting, User Busy"); 1805 break; 1806 1807 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1808 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1809 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1810 1811 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1812 if (call_held || call_setup_in_progress){ 1813 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1814 0, NULL); 1815 1816 } 1817 1818 if (call_setup_in_progress){ 1819 log_info("AG: Call Dropped, Accept new call"); 1820 hfp_ag_set_callsetup_indicator(); 1821 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1822 } else { 1823 log_info("AG: Call Dropped, Resume held call"); 1824 } 1825 if (call_held){ 1826 hfp_ag_set_callheld_indicator(); 1827 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1828 } 1829 1830 hfp_connection->call_state = HFP_CALL_ACTIVE; 1831 break; 1832 } 1833 1834 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1835 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1836 // only update if callsetup changed 1837 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1838 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1839 NULL); 1840 1841 if (call_setup_in_progress){ 1842 log_info("AG: Call on Hold, Accept new call"); 1843 hfp_ag_set_callsetup_indicator(); 1844 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1845 } else { 1846 log_info("AG: Swap calls"); 1847 } 1848 1849 hfp_ag_set_callheld_indicator(); 1850 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1851 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1852 hfp_connection->call_state = HFP_CALL_ACTIVE; 1853 break; 1854 } 1855 1856 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1857 // Adds a held call to the conversation. 1858 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1859 log_info("AG: Join 3-way-call"); 1860 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1861 hfp_ag_set_callheld_indicator(); 1862 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1863 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1864 } 1865 hfp_connection->call_state = HFP_CALL_ACTIVE; 1866 break; 1867 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1868 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1869 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1870 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1871 hfp_ag_set_call_indicator(); 1872 hfp_ag_set_callheld_indicator(); 1873 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1874 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1875 hfp_connection->call_state = HFP_CALL_IDLE; 1876 break; 1877 1878 default: 1879 break; 1880 } 1881 1882 1883 } 1884 1885 1886 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1887 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1888 if (!active_call) return; 1889 1890 int idx = active_call->index; 1891 hfp_enhanced_call_dir_t dir = active_call->direction; 1892 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1893 hfp_enhanced_call_mode_t mode = active_call->mode; 1894 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1895 uint8_t type = active_call->clip_type; 1896 char * number = active_call->clip_number; 1897 1898 char buffer[100]; 1899 // TODO: check length of a buffer, to fit the MTU 1900 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1901 if (number){ 1902 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1903 } 1904 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1905 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, 1906 mode, mpty, type, number); 1907 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1908 } 1909 1910 // sends pending command, returns if command was sent 1911 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1912 if (hfp_connection->send_status_of_current_calls){ 1913 hfp_connection->ok_pending = 0; 1914 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1915 hfp_connection->next_call_index++; 1916 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1917 return 1; 1918 } else { 1919 // 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 1920 hfp_connection->next_call_index = 0; 1921 hfp_connection->ok_pending = 1; 1922 hfp_connection->send_status_of_current_calls = 0; 1923 } 1924 } 1925 1926 if (hfp_connection->ag_notify_incoming_call_waiting){ 1927 hfp_connection->ag_notify_incoming_call_waiting = 0; 1928 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1929 return 1; 1930 } 1931 1932 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1933 hfp_connection->ok_pending = 0; 1934 hfp_connection->send_error = 0; 1935 hfp_connection->command = HFP_CMD_NONE; 1936 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1937 return 1; 1938 } 1939 1940 if (hfp_connection->send_error){ 1941 hfp_connection->send_error = 0; 1942 hfp_connection->command = HFP_CMD_NONE; 1943 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1944 return 1; 1945 } 1946 1947 // note: before update AG indicators and ok_pending 1948 if (hfp_connection->send_response_and_hold_status){ 1949 int status = hfp_connection->send_response_and_hold_status - 1; 1950 hfp_connection->send_response_and_hold_status = 0; 1951 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1952 return 1; 1953 } 1954 1955 if (hfp_connection->ok_pending){ 1956 hfp_connection->ok_pending = 0; 1957 hfp_connection->command = HFP_CMD_NONE; 1958 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1959 return 1; 1960 } 1961 1962 // update AG indicators 1963 if (hfp_connection->ag_indicators_status_update_bitmap){ 1964 int i; 1965 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1966 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1967 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1968 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1969 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1970 break; 1971 } 1972 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1973 return 1; 1974 } 1975 } 1976 } 1977 1978 if (hfp_connection->ag_send_no_carrier){ 1979 hfp_connection->ag_send_no_carrier = false; 1980 hfp_ag_send_no_carrier(hfp_connection->rfcomm_cid); 1981 return 1; 1982 } 1983 1984 if (hfp_connection->ag_ring){ 1985 hfp_connection->ag_ring = 0; 1986 hfp_connection->command = HFP_CMD_NONE; 1987 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1988 return 1; 1989 } 1990 1991 if (hfp_connection->ag_send_clip){ 1992 hfp_connection->ag_send_clip = 0; 1993 hfp_connection->command = HFP_CMD_NONE; 1994 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1995 return 1; 1996 } 1997 1998 if (hfp_connection->send_phone_number_for_voice_tag){ 1999 hfp_connection->send_phone_number_for_voice_tag = 0; 2000 hfp_connection->command = HFP_CMD_NONE; 2001 hfp_connection->ok_pending = 1; 2002 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 2003 return 1; 2004 } 2005 2006 if (hfp_connection->send_subscriber_number){ 2007 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 2008 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 2009 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 2010 } else { 2011 hfp_connection->send_subscriber_number = 0; 2012 hfp_connection->next_subscriber_number_to_send = 0; 2013 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2014 } 2015 hfp_connection->command = HFP_CMD_NONE; 2016 return 1; 2017 } 2018 2019 if (hfp_connection->send_microphone_gain){ 2020 hfp_connection->send_microphone_gain = 0; 2021 hfp_connection->command = HFP_CMD_NONE; 2022 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 2023 return 1; 2024 } 2025 2026 if (hfp_connection->send_speaker_gain){ 2027 hfp_connection->send_speaker_gain = 0; 2028 hfp_connection->command = HFP_CMD_NONE; 2029 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 2030 return 1; 2031 } 2032 2033 if (hfp_connection->send_ag_status_indicators){ 2034 hfp_connection->send_ag_status_indicators = 0; 2035 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 2036 return 1; 2037 } 2038 2039 return 0; 2040 } 2041 2042 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 2043 2044 btstack_assert(hfp_connection != NULL); 2045 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 2046 2047 // during SDP query, RFCOMM CID is not set 2048 if (hfp_connection->rfcomm_cid == 0) return; 2049 2050 // assert command could be sent 2051 if (hci_can_send_command_packet_now() == 0) return; 2052 2053 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 2054 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 2055 hfp_connection->release_audio_connection = 0; 2056 gap_disconnect(hfp_connection->sco_handle); 2057 return; 2058 } 2059 2060 #ifdef ENABLE_CC256X_ASSISTED_HFP 2061 // WBS Disassociate 2062 if (hfp_connection->cc256x_send_wbs_disassociate){ 2063 hfp_connection->cc256x_send_wbs_disassociate = false; 2064 hci_send_cmd(&hci_ti_wbs_disassociate); 2065 return; 2066 } 2067 // Write Codec Config 2068 if (hfp_connection->cc256x_send_write_codec_config){ 2069 hfp_connection->cc256x_send_write_codec_config = false; 2070 hfp_cc256x_write_codec_config(hfp_connection); 2071 return; 2072 } 2073 // WBS Associate 2074 if (hfp_connection->cc256x_send_wbs_associate){ 2075 hfp_connection->cc256x_send_wbs_associate = false; 2076 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 2077 return; 2078 } 2079 #endif 2080 #ifdef ENABLE_BCM_PCM_WBS 2081 // Enable WBS 2082 if (hfp_connection->bcm_send_enable_wbs){ 2083 hfp_connection->bcm_send_enable_wbs = false; 2084 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 2085 return; 2086 } 2087 // Write I2S/PCM params 2088 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 2089 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 2090 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 2091 return; 2092 } 2093 // Disable WBS 2094 if (hfp_connection->bcm_send_disable_wbs){ 2095 hfp_connection->bcm_send_disable_wbs = false; 2096 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 2097 return; 2098 } 2099 #endif 2100 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 2101 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 2102 hfp_finalize_connection_context(hfp_connection); 2103 return; 2104 } 2105 #endif 2106 2107 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 2108 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 2109 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2110 return; 2111 } 2112 2113 int cmd_sent = hfp_ag_send_commands(hfp_connection); 2114 2115 if (!cmd_sent){ 2116 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 2117 } 2118 2119 if (!cmd_sent){ 2120 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 2121 } 2122 2123 if (!cmd_sent){ 2124 cmd_sent = call_setup_state_machine(hfp_connection); 2125 } 2126 2127 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 2128 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 2129 switch (hfp_connection->codecs_state){ 2130 case HFP_CODECS_IDLE: 2131 case HFP_CODECS_RECEIVED_LIST: 2132 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2133 case HFP_CODECS_ERROR: 2134 hfp_connection->trigger_codec_exchange = 0; 2135 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2136 break; 2137 default: 2138 break; 2139 } 2140 } 2141 2142 if (!cmd_sent){ 2143 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 2144 } 2145 2146 if (!cmd_sent){ 2147 cmd_sent = hfp_ag_voice_recognition_state_machine(hfp_connection); 2148 } 2149 2150 // disconnect 2151 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 2152 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 2153 rfcomm_disconnect(hfp_connection->rfcomm_cid); 2154 } 2155 2156 if (cmd_sent){ 2157 hfp_connection->command = HFP_CMD_NONE; 2158 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 2159 } 2160 } 2161 2162 static int hfp_parser_is_end_of_line(uint8_t byte){ 2163 return (byte == '\n') || (byte == '\r'); 2164 } 2165 2166 static void hfp_ag_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 2167 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 2168 if (size < 1) return; 2169 uint8_t status = ERROR_CODE_SUCCESS; 2170 2171 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 2172 #ifdef ENABLE_HFP_AT_MESSAGES 2173 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 2174 #endif 2175 2176 // process messages byte-wise 2177 int pos; 2178 for (pos = 0; pos < size ; pos++){ 2179 hfp_parse(hfp_connection, packet[pos], 0); 2180 2181 // parse until end of line 2182 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 2183 2184 hfp_generic_status_indicator_t * indicator; 2185 switch(hfp_connection->command){ 2186 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 2187 // dealt with in hfp_ag_voice_recognition_state_machine 2188 break; 2189 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 2190 if (hfp_ag_response_and_hold_active){ 2191 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 2192 } 2193 hfp_connection->ok_pending = 1; 2194 break; 2195 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 2196 switch(hfp_connection->ag_response_and_hold_action){ 2197 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 2198 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 2199 break; 2200 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 2201 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 2202 break; 2203 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 2204 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 2205 break; 2206 default: 2207 break; 2208 } 2209 hfp_connection->ok_pending = 1; 2210 break; 2211 case HFP_CMD_HF_INDICATOR_STATUS: 2212 hfp_connection->command = HFP_CMD_NONE; 2213 2214 if (hfp_connection->parser_indicator_index < hfp_generic_status_indicators_nr){ 2215 indicator = &hfp_generic_status_indicators[hfp_connection->parser_indicator_index]; 2216 switch (indicator->uuid){ 2217 case HFP_HF_INDICATOR_UUID_ENHANCED_SAFETY: 2218 if (hfp_connection->parser_indicator_value > 1) { 2219 hfp_connection->send_error = 1; 2220 break; 2221 } 2222 hfp_connection->ok_pending = 1; 2223 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2224 break; 2225 case HFP_HF_INDICATOR_UUID_BATTERY_LEVEL: 2226 if (hfp_connection->parser_indicator_value > 100){ 2227 hfp_connection->send_error = 1; 2228 break; 2229 } 2230 hfp_connection->ok_pending = 1; 2231 hfp_ag_emit_hf_indicator_value(hfp_connection, indicator->uuid, hfp_connection->parser_indicator_value); 2232 break; 2233 default: 2234 hfp_connection->send_error = 1; 2235 break; 2236 } 2237 } else { 2238 hfp_connection->send_error = 1; 2239 } 2240 break; 2241 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 2242 // expected by SLC state machine 2243 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 2244 hfp_connection->send_ag_indicators_segment = 0; 2245 hfp_connection->send_ag_status_indicators = 1; 2246 break; 2247 case HFP_CMD_LIST_CURRENT_CALLS: 2248 hfp_connection->command = HFP_CMD_NONE; 2249 hfp_connection->next_call_index = 0; 2250 hfp_connection->send_status_of_current_calls = 1; 2251 break; 2252 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 2253 if (subscriber_numbers_count == 0){ 2254 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 2255 break; 2256 } 2257 hfp_connection->next_subscriber_number_to_send = 0; 2258 hfp_connection->send_subscriber_number = 1; 2259 break; 2260 case HFP_CMD_TRANSMIT_DTMF_CODES: 2261 { 2262 hfp_connection->command = HFP_CMD_NONE; 2263 char buffer[2]; 2264 buffer[0] = (char) hfp_connection->ag_dtmf_code; 2265 buffer[1] = 0; 2266 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 2267 break; 2268 } 2269 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 2270 hfp_connection->command = HFP_CMD_NONE; 2271 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 2272 break; 2273 case HFP_CMD_TURN_OFF_EC_AND_NR: 2274 hfp_connection->command = HFP_CMD_NONE; 2275 2276 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 2277 hfp_connection->ok_pending = 1; 2278 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 2279 status = ERROR_CODE_SUCCESS; 2280 } else { 2281 hfp_connection->send_error = 1; 2282 status = ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2283 } 2284 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 2285 break; 2286 case HFP_CMD_CALL_ANSWERED: 2287 hfp_connection->command = HFP_CMD_NONE; 2288 log_info("HFP: ATA"); 2289 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 2290 break; 2291 case HFP_CMD_HANG_UP_CALL: 2292 hfp_connection->command = HFP_CMD_NONE; 2293 hfp_connection->ok_pending = 1; 2294 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 2295 break; 2296 case HFP_CMD_CALL_HOLD: { 2297 hfp_connection->command = HFP_CMD_NONE; 2298 hfp_connection->ok_pending = 1; 2299 2300 switch (hfp_connection->ag_call_hold_action){ 2301 case 0: 2302 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2303 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2304 break; 2305 case 1: 2306 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2307 // Where both a held and a waiting call exist, the above procedures shall apply to the 2308 // waiting call (i.e., not to the held call) in conflicting situation. 2309 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2310 break; 2311 case 2: 2312 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2313 // Where both a held and a waiting call exist, the above procedures shall apply to the 2314 // waiting call (i.e., not to the held call) in conflicting situation. 2315 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2316 break; 2317 case 3: 2318 // Adds a held call to the conversation. 2319 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2320 break; 2321 case 4: 2322 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2323 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2324 break; 2325 default: 2326 break; 2327 } 2328 hfp_connection->call_index = 0; 2329 break; 2330 } 2331 case HFP_CMD_CALL_PHONE_NUMBER: 2332 hfp_connection->command = HFP_CMD_NONE; 2333 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_HF, hfp_connection); 2334 break; 2335 case HFP_CMD_REDIAL_LAST_NUMBER: 2336 hfp_connection->command = HFP_CMD_NONE; 2337 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2338 break; 2339 case HFP_CMD_ENABLE_CLIP: 2340 hfp_connection->command = HFP_CMD_NONE; 2341 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2342 hfp_connection->ok_pending = 1; 2343 break; 2344 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2345 hfp_connection->command = HFP_CMD_NONE; 2346 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2347 hfp_connection->ok_pending = 1; 2348 break; 2349 case HFP_CMD_SET_SPEAKER_GAIN: 2350 hfp_connection->command = HFP_CMD_NONE; 2351 hfp_connection->ok_pending = 1; 2352 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2353 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2354 break; 2355 case HFP_CMD_SET_MICROPHONE_GAIN: 2356 hfp_connection->command = HFP_CMD_NONE; 2357 hfp_connection->ok_pending = 1; 2358 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2359 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2360 break; 2361 default: 2362 break; 2363 } 2364 } 2365 } 2366 2367 static void hfp_ag_run(void){ 2368 btstack_linked_list_iterator_t it; 2369 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2370 while (btstack_linked_list_iterator_has_next(&it)){ 2371 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2372 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2373 hfp_ag_run_for_context(hfp_connection); 2374 } 2375 } 2376 2377 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2378 hfp_connection_t * hfp_connection = NULL; 2379 switch (packet_type){ 2380 case RFCOMM_DATA_PACKET: 2381 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 2382 btstack_assert(hfp_connection != NULL); 2383 2384 hfp_ag_handle_rfcomm_data(hfp_connection, packet, size); 2385 hfp_ag_run_for_context(hfp_connection); 2386 return; 2387 case HCI_EVENT_PACKET: 2388 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2389 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2390 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid); 2391 btstack_assert(hfp_connection != NULL); 2392 2393 hfp_ag_run_for_context(hfp_connection); 2394 return; 2395 } 2396 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2397 break; 2398 default: 2399 break; 2400 } 2401 2402 hfp_ag_run(); 2403 } 2404 2405 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2406 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2407 hfp_ag_run(); 2408 } 2409 2410 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2411 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2412 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2413 return; 2414 } 2415 int i; 2416 hfp_codecs_nr = codecs_nr; 2417 for (i=0; i < codecs_nr; i++){ 2418 hfp_codecs[i] = codecs[i]; 2419 } 2420 } 2421 2422 void hfp_ag_init_supported_features(uint32_t supported_features){ 2423 hfp_supported_features = supported_features; 2424 } 2425 2426 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2427 hfp_ag_indicators_nr = ag_indicators_nr; 2428 (void)memcpy(hfp_ag_indicators, ag_indicators, 2429 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2430 } 2431 2432 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2433 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2434 hfp_generic_status_indicators_nr = hf_indicators_nr; 2435 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2436 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2437 } 2438 2439 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2440 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2441 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2442 call_hold_services_nr * sizeof(char *)); 2443 } 2444 2445 2446 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2447 2448 hfp_init(); 2449 hfp_ag_call_hold_services_nr = 0; 2450 hfp_ag_response_and_hold_active = 0; 2451 hfp_ag_indicators_nr = 0; 2452 hfp_codecs_nr = 0; 2453 hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2454 subscriber_numbers = NULL; 2455 subscriber_numbers_count = 0; 2456 2457 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2458 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2459 2460 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2461 2462 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2463 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2464 2465 hfp_gsm_init(); 2466 } 2467 2468 void hfp_ag_deinit(void){ 2469 hfp_deinit(); 2470 hfp_gsm_deinit(); 2471 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2472 (void) memset(&hfp_ag_callback, 0, sizeof(btstack_packet_handler_t)); 2473 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2474 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2475 } 2476 2477 uint8_t hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2478 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2479 } 2480 2481 uint8_t hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2482 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2483 if (!hfp_connection){ 2484 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2485 } 2486 2487 hfp_trigger_release_service_level_connection(hfp_connection); 2488 hfp_ag_run_for_context(hfp_connection); 2489 return ERROR_CODE_SUCCESS; 2490 } 2491 2492 uint8_t hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2493 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2494 if (!hfp_connection){ 2495 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2496 } 2497 2498 hfp_connection->extended_audio_gateway_error = 0; 2499 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2500 return ERROR_CODE_COMMAND_DISALLOWED; 2501 } 2502 2503 hfp_connection->extended_audio_gateway_error = error; 2504 hfp_ag_run_for_context(hfp_connection); 2505 return ERROR_CODE_SUCCESS; 2506 } 2507 2508 static uint8_t hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2509 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 2510 return ERROR_CODE_COMMAND_DISALLOWED; 2511 } 2512 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 2513 return ERROR_CODE_COMMAND_DISALLOWED; 2514 } 2515 2516 hfp_connection->establish_audio_connection = 1; 2517 if (!has_codec_negotiation_feature(hfp_connection)){ 2518 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2519 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2520 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2521 // now, pick link settings 2522 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2523 #ifdef ENABLE_CC256X_ASSISTED_HFP 2524 hfp_cc256x_prepare_for_sco(hfp_connection); 2525 #endif 2526 return ERROR_CODE_SUCCESS; 2527 } 2528 2529 uint8_t i; 2530 bool codec_was_in_use = false; 2531 bool better_codec_can_be_used = false; 2532 2533 for (i = 0; i<hfp_connection->remote_codecs_nr; i++){ 2534 if (hfp_connection->negotiated_codec == hfp_connection->remote_codecs[i]){ 2535 codec_was_in_use = true; 2536 } else if (hfp_connection->negotiated_codec < hfp_connection->remote_codecs[i]){ 2537 better_codec_can_be_used = true; 2538 } 2539 } 2540 2541 if (!codec_was_in_use || better_codec_can_be_used){ 2542 hfp_connection->trigger_codec_exchange = 1; 2543 hfp_connection->codecs_state = HFP_CODECS_IDLE; 2544 } 2545 return ERROR_CODE_SUCCESS; 2546 } 2547 2548 uint8_t hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2549 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2550 if (!hfp_connection){ 2551 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2552 } 2553 uint8_t status = hfp_ag_setup_audio_connection(hfp_connection); 2554 if (status != ERROR_CODE_SUCCESS){ 2555 return status; 2556 } 2557 hfp_ag_run_for_context(hfp_connection); 2558 return ERROR_CODE_SUCCESS; 2559 } 2560 2561 uint8_t hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2562 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2563 if (!hfp_connection){ 2564 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2565 } 2566 2567 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 2568 return ERROR_CODE_COMMAND_DISALLOWED; 2569 } 2570 2571 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 2572 if (status == ERROR_CODE_SUCCESS){ 2573 hfp_ag_run_for_context(hfp_connection); 2574 } 2575 return status; 2576 } 2577 2578 /** 2579 * @brief Enable in-band ring tone 2580 */ 2581 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2582 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2583 return; 2584 } 2585 2586 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2587 2588 btstack_linked_list_iterator_t it; 2589 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2590 while (btstack_linked_list_iterator_has_next(&it)){ 2591 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2592 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2593 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2594 hfp_ag_run_for_context(hfp_connection); 2595 } 2596 } 2597 2598 /** 2599 * @brief Called from GSM 2600 */ 2601 void hfp_ag_incoming_call(void){ 2602 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2603 } 2604 2605 void hfp_ag_outgoing_call_initiated(const char * number) { 2606 UNUSED(number); 2607 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED_BY_AG, NULL); 2608 } 2609 2610 /** 2611 * @brief number is stored. 2612 */ 2613 void hfp_ag_set_clip(uint8_t type, const char * number){ 2614 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2615 } 2616 2617 void hfp_ag_call_dropped(void){ 2618 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2619 } 2620 2621 // call from AG UI 2622 void hfp_ag_answer_incoming_call(void){ 2623 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2624 } 2625 2626 void hfp_ag_join_held_call(void){ 2627 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2628 } 2629 2630 void hfp_ag_terminate_call(void){ 2631 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2632 } 2633 2634 void hfp_ag_outgoing_call_ringing(void){ 2635 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2636 } 2637 2638 void hfp_ag_outgoing_call_established(void){ 2639 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2640 } 2641 2642 void hfp_ag_outgoing_call_rejected(void){ 2643 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2644 } 2645 2646 void hfp_ag_outgoing_call_accepted(void){ 2647 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2648 } 2649 2650 void hfp_ag_hold_incoming_call(void){ 2651 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2652 } 2653 2654 void hfp_ag_accept_held_incoming_call(void) { 2655 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2656 } 2657 2658 void hfp_ag_reject_held_incoming_call(void){ 2659 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2660 } 2661 2662 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2663 int indicator_index = get_ag_indicator_index_for_name(name); 2664 if (indicator_index < 0) return; 2665 hfp_ag_indicators[indicator_index].status = value; 2666 2667 btstack_linked_list_iterator_t it; 2668 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2669 while (btstack_linked_list_iterator_has_next(&it)){ 2670 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2671 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2672 if (!hfp_connection->ag_indicators[indicator_index].enabled) { 2673 log_info("Requested AG indicator '%s' update to %u, but it is not enabled", hfp_ag_indicators[indicator_index].name, value); 2674 continue; 2675 } 2676 log_info("AG indicator '%s' changed to %u, request transfer status", hfp_ag_indicators[indicator_index].name, value); 2677 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2678 hfp_ag_run_for_context(hfp_connection); 2679 } 2680 } 2681 2682 uint8_t hfp_ag_set_registration_status(int registration_status){ 2683 if ((registration_status < 0) || (registration_status > 1)){ 2684 return ERROR_CODE_COMMAND_DISALLOWED; 2685 } 2686 2687 if ( (registration_status == 0) && (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 2688 2689 // if network goes away wihle a call is active: 2690 // - the call gets dropped 2691 // - we send NO CARRIER 2692 // NOTE: the CALL=0 has to be sent before NO CARRIER 2693 2694 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2695 2696 btstack_linked_list_iterator_t it; 2697 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2698 while (btstack_linked_list_iterator_has_next(&it)){ 2699 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2700 hfp_connection->ag_send_no_carrier = true; 2701 } 2702 } 2703 hfp_ag_set_ag_indicator("service", registration_status); 2704 return ERROR_CODE_SUCCESS; 2705 } 2706 2707 uint8_t hfp_ag_set_signal_strength(int signal_strength){ 2708 if ((signal_strength < 0) || (signal_strength > 5)){ 2709 return ERROR_CODE_COMMAND_DISALLOWED; 2710 } 2711 2712 hfp_ag_set_ag_indicator("signal", signal_strength); 2713 return ERROR_CODE_SUCCESS; 2714 } 2715 2716 uint8_t hfp_ag_set_roaming_status(int roaming_status){ 2717 if ((roaming_status < 0) || (roaming_status > 1)){ 2718 return ERROR_CODE_COMMAND_DISALLOWED; 2719 } 2720 2721 hfp_ag_set_ag_indicator("roam", roaming_status); 2722 return ERROR_CODE_SUCCESS; 2723 } 2724 2725 uint8_t hfp_ag_set_battery_level(int battery_level){ 2726 if ((battery_level < 0) || (battery_level > 5)){ 2727 return ERROR_CODE_COMMAND_DISALLOWED; 2728 } 2729 hfp_ag_set_ag_indicator("battchg", battery_level); 2730 return ERROR_CODE_SUCCESS; 2731 } 2732 2733 static uint8_t activate_voice_recognition(hci_con_handle_t acl_handle, bool enhanced){ 2734 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2735 if (!hfp_connection){ 2736 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2737 } 2738 2739 uint8_t status = hfp_ag_can_activate_voice_recognition(hfp_connection, enhanced); 2740 if (status == ERROR_CODE_SUCCESS){ 2741 hfp_connection->ag_activate_voice_recognition_value = 1; 2742 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 2743 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2744 hfp_connection->enhanced_voice_recognition_enabled = enhanced; 2745 hfp_connection->ag_audio_connection_opened_before_vra = hfp_ag_is_audio_connection_active(hfp_connection); 2746 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2747 hfp_ag_run_for_context(hfp_connection); 2748 } 2749 return status; 2750 } 2751 2752 static uint8_t deactivate_voice_recognition(hci_con_handle_t acl_handle, bool enhanced){ 2753 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2754 if (!hfp_connection){ 2755 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2756 } 2757 uint8_t status = hfp_ag_voice_recognition_session_active(hfp_connection, enhanced); 2758 if (status == ERROR_CODE_SUCCESS){ 2759 hfp_connection->ag_activate_voice_recognition_value = 0; 2760 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2761 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2762 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 2763 hfp_ag_run_for_context(hfp_connection); 2764 } 2765 return status; 2766 } 2767 2768 uint8_t hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle){ 2769 return activate_voice_recognition(acl_handle, false); 2770 } 2771 2772 uint8_t hfp_ag_activate_enhanced_voice_recognition(hci_con_handle_t acl_handle){ 2773 return activate_voice_recognition(acl_handle, true); 2774 } 2775 2776 uint8_t hfp_ag_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2777 return deactivate_voice_recognition(acl_handle, false); 2778 } 2779 2780 uint8_t hfp_ag_deactivate_enhanced_voice_recognition(hci_con_handle_t acl_handle){ 2781 return deactivate_voice_recognition(acl_handle, true); 2782 } 2783 2784 static uint8_t hfp_ag_enhanced_voice_recognition_send_state(hci_con_handle_t acl_handle, hfp_voice_recognition_state_t state){ 2785 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2786 if (!hfp_connection){ 2787 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2788 } 2789 2790 uint8_t status = hfp_ag_voice_recognition_session_active(hfp_connection, true); 2791 if (status == ERROR_CODE_SUCCESS){ 2792 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2793 hfp_connection->ag_vra_state = state; 2794 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_STATUS; 2795 hfp_ag_run_for_context(hfp_connection); 2796 } 2797 return status; 2798 } 2799 2800 uint8_t hfp_ag_enhanced_voice_recognition_report_sending_audio(hci_con_handle_t acl_handle){ 2801 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_STARTING_SOUND); 2802 } 2803 uint8_t hfp_ag_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 2804 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_READY_TO_ACCEPT_AUDIO_INPUT); 2805 } 2806 uint8_t hfp_ag_enhanced_voice_recognition_report_processing_input(hci_con_handle_t acl_handle){ 2807 return hfp_ag_enhanced_voice_recognition_send_state(acl_handle, HFP_VOICE_RECOGNITION_STATE_AG_IS_PROCESSING_AUDIO_INPUT); 2808 } 2809 2810 2811 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){ 2812 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2813 if (!hfp_connection){ 2814 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2815 } 2816 2817 uint8_t status = hfp_ag_can_send_enahnced_voice_recognition_message(hfp_connection, true); 2818 if (status == ERROR_CODE_SUCCESS){ 2819 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2820 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_MSG; 2821 hfp_connection->ag_msg = msg; 2822 hfp_connection->ag_vra_state = state; 2823 hfp_ag_run_for_context(hfp_connection); 2824 } 2825 return status; 2826 } 2827 2828 2829 uint8_t hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2830 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2831 if (!hfp_connection){ 2832 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2833 } 2834 2835 if ((gain < 0) || (gain > 15)){ 2836 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2837 return ERROR_CODE_COMMAND_DISALLOWED; 2838 } 2839 2840 if (hfp_connection->microphone_gain != gain){ 2841 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2842 hfp_connection->microphone_gain = gain; 2843 hfp_connection->send_microphone_gain = 1; 2844 } 2845 hfp_ag_run_for_context(hfp_connection); 2846 return ERROR_CODE_SUCCESS; 2847 } 2848 2849 uint8_t hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2850 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2851 if (!hfp_connection){ 2852 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2853 } 2854 2855 if ((gain < 0) || (gain > 15)){ 2856 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2857 return ERROR_CODE_COMMAND_DISALLOWED; 2858 } 2859 2860 if (hfp_connection->speaker_gain != gain){ 2861 hfp_connection->speaker_gain = gain; 2862 hfp_connection->send_speaker_gain = 1; 2863 } 2864 hfp_ag_run_for_context(hfp_connection); 2865 return ERROR_CODE_SUCCESS; 2866 } 2867 2868 uint8_t hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 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_ag_set_clip(0, number); 2875 hfp_connection->send_phone_number_for_voice_tag = 1; 2876 return ERROR_CODE_SUCCESS; 2877 } 2878 2879 uint8_t hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2880 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2881 if (!hfp_connection){ 2882 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2883 } 2884 2885 hfp_connection->send_error = 1; 2886 return ERROR_CODE_SUCCESS; 2887 } 2888 2889 uint8_t hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2890 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2891 if (!hfp_connection){ 2892 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2893 } 2894 2895 hfp_connection->ok_pending = 1; 2896 return ERROR_CODE_SUCCESS; 2897 } 2898 2899 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2900 subscriber_numbers = numbers; 2901 subscriber_numbers_count = numbers_count; 2902 } 2903 2904 void hfp_ag_clear_last_dialed_number(void){ 2905 hfp_gsm_clear_last_dialed_number(); 2906 } 2907 2908 void hfp_ag_set_last_dialed_number(const char * number){ 2909 hfp_gsm_set_last_dialed_number(number); 2910 } 2911 2912 uint8_t hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2913 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2914 if (!hfp_connection){ 2915 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2916 } 2917 2918 if (!hfp_connection->call_waiting_notification_enabled){ 2919 return ERROR_CODE_COMMAND_DISALLOWED; 2920 } 2921 2922 hfp_connection->ag_notify_incoming_call_waiting = 1; 2923 hfp_ag_run_for_context(hfp_connection); 2924 return ERROR_CODE_SUCCESS; 2925 } 2926 2927 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){ 2928 if (!name){ 2929 name = default_hfp_ag_service_name; 2930 } 2931 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2932 2933 /* 2934 * 0x01 – Ability to reject a call 2935 * 0x00 – No ability to reject a call 2936 */ 2937 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2938 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2939 2940 // Construct SupportedFeatures for SDP bitmap: 2941 // 2942 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2943 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2944 // 2945 // Wide band speech (bit 5) requires Codec negotiation 2946 // 2947 uint16_t sdp_features = supported_features & 0x1f; 2948 if ( (wide_band_speech == 1) && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2949 sdp_features |= 1 << 5; 2950 } 2951 2952 if (supported_features & (1 << HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2953 sdp_features |= 1 << 6; 2954 } 2955 2956 if (supported_features & (1 << HFP_AGSF_VOICE_RECOGNITION_TEXT)){ 2957 sdp_features |= 1 << 7; 2958 } 2959 2960 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2961 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2962 } 2963 2964 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2965 btstack_assert(callback != NULL); 2966 2967 hfp_ag_callback = callback; 2968 hfp_set_ag_callback(callback); 2969 } 2970