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 <string.h> 50 51 #include "hci_cmd.h" 52 #include "btstack_run_loop.h" 53 54 #include "bluetooth_sdp.h" 55 #include "hci.h" 56 #include "btstack_memory.h" 57 #include "hci_dump.h" 58 #include "l2cap.h" 59 #include "btstack_debug.h" 60 #include "btstack_event.h" 61 #include "classic/core.h" 62 #include "classic/hfp.h" 63 #include "classic/hfp_ag.h" 64 #include "classic/hfp_gsm_model.h" 65 #include "classic/sdp_client_rfcomm.h" 66 #include "classic/sdp_server.h" 67 #include "classic/sdp_util.h" 68 69 // private prototypes 70 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection); 71 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection); 72 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 73 74 // public prototypes 75 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 76 int get_hfp_generic_status_indicators_nr(void); 77 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 78 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 79 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 80 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 81 82 83 // const 84 static const char default_hfp_ag_service_name[] = "Voice gateway"; 85 86 // globals 87 static btstack_packet_callback_registration_t hfp_ag_hci_event_callback_registration; 88 89 static uint16_t hfp_supported_features; 90 91 static uint8_t hfp_codecs_nr; 92 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 93 94 static int hfp_ag_indicators_nr; 95 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_INDICATORS]; 96 97 static int hfp_generic_status_indicators_nr; 98 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_INDICATORS]; 99 100 static int hfp_ag_call_hold_services_nr; 101 static char *hfp_ag_call_hold_services[6]; 102 static btstack_packet_handler_t hfp_ag_callback; 103 104 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 105 static int hfp_ag_response_and_hold_active; 106 107 // Subscriber information entries 108 static hfp_phone_number_t * subscriber_numbers; 109 static int subscriber_numbers_count; 110 111 // code 112 static void hfp_ag_emit_simple_event(uint8_t event_subtype){ 113 uint8_t event[3]; 114 event[0] = HCI_EVENT_HFP_META; 115 event[1] = sizeof(event) - 2; 116 event[2] = event_subtype; 117 if (!hfp_ag_callback) return; 118 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 119 } 120 121 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 122 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 123 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 124 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 125 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 126 } 127 return hfp_connection->ag_indicators_nr; 128 } 129 130 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 131 // TODO: save only value, and value changed in the hfp_connection? 132 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 133 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 134 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 135 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 136 } 137 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 138 } 139 140 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 141 int i; 142 for (i = 0; i < hfp_ag_indicators_nr; i++){ 143 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 144 return &hfp_ag_indicators[i]; 145 } 146 } 147 return NULL; 148 } 149 150 static int get_ag_indicator_index_for_name(const char * name){ 151 int i; 152 for (i = 0; i < hfp_ag_indicators_nr; i++){ 153 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 154 return i; 155 } 156 } 157 return -1; 158 } 159 160 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 161 btstack_linked_list_iterator_t it; 162 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 163 while (btstack_linked_list_iterator_has_next(&it)){ 164 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 165 if (hfp_connection->acl_handle != handle) continue; 166 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 167 return hfp_connection; 168 } 169 return NULL; 170 } 171 172 static int use_in_band_tone(void){ 173 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 174 } 175 176 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 177 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 178 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 179 return hf && ag; 180 } 181 182 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 183 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 184 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 185 return hf && ag; 186 } 187 188 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 189 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 190 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 191 return hf && ag; 192 } 193 194 /* unsolicited responses */ 195 196 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 197 char buffer[20]; 198 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 199 return send_str_over_rfcomm(cid, buffer); 200 } 201 202 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 203 char buffer[40]; 204 sprintf(buffer, "\r\n%s:%d\r\n\r\nOK\r\n", HFP_SUPPORTED_FEATURES, hfp_supported_features); 205 return send_str_over_rfcomm(cid, buffer); 206 } 207 208 static int hfp_ag_send_ok(uint16_t cid){ 209 char buffer[10]; 210 sprintf(buffer, "\r\nOK\r\n"); 211 return send_str_over_rfcomm(cid, buffer); 212 } 213 214 static int hfp_ag_send_ring(uint16_t cid){ 215 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 216 } 217 218 static int hfp_ag_send_clip(uint16_t cid){ 219 char buffer[50]; 220 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 221 return send_str_over_rfcomm(cid, buffer); 222 } 223 224 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 225 char buffer[50]; 226 sprintf(buffer, "\r\n%s: ,\"%s\",%u, , \r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 227 return send_str_over_rfcomm(cid, buffer); 228 } 229 230 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 231 char buffer[50]; 232 sprintf(buffer, "\r\n%s: %s\r\n", HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 233 return send_str_over_rfcomm(cid, buffer); 234 } 235 236 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 237 char buffer[50]; 238 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 239 return send_str_over_rfcomm(cid, buffer); 240 } 241 242 static int hfp_ag_send_error(uint16_t cid){ 243 char buffer[10]; 244 sprintf(buffer, "\r\nERROR\r\n"); 245 return send_str_over_rfcomm(cid, buffer); 246 } 247 248 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 249 char buffer[20]; 250 sprintf(buffer, "\r\n%s=%d\r\n", HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 251 return send_str_over_rfcomm(cid, buffer); 252 } 253 254 // get size for indicator string 255 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 256 // template: ("$NAME",($MIN,$MAX)) 257 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 258 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 259 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 260 } 261 262 // store indicator 263 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer){ 264 sprintf((char *) buffer, "(\"%s\",(%d,%d)),", 265 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 266 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 267 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 268 } 269 270 // structure: header [indicator [comma indicator]] footer 271 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 272 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 273 if (!num_indicators) return 2; 274 return 3 + ((num_indicators-1) * 2); 275 } 276 277 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 278 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 279 if (index == 0) { 280 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 281 } 282 index--; 283 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 284 int indicator_index = index >> 1; 285 if ((index & 1) == 0){ 286 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 287 } 288 if (indicator_index == (num_indicators - 1)){ 289 return 8; // "\r\n\r\nOK\r\n" 290 } 291 return 1; // comma 292 } 293 294 static void hgp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer){ 295 if (index == 0){ 296 *buffer++ = '\r'; 297 *buffer++ = '\n'; 298 int len = strlen(HFP_INDICATOR); 299 (void)memcpy(buffer, HFP_INDICATOR, len); 300 buffer += len; 301 *buffer++ = ':'; 302 return; 303 } 304 index--; 305 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 306 int indicator_index = index >> 1; 307 if ((index & 1) == 0){ 308 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer); 309 return; 310 } 311 if (indicator_index == (num_indicators-1)){ 312 (void)memcpy(buffer, "\r\n\r\nOK\r\n", 8); 313 return; 314 } 315 *buffer = ','; 316 } 317 318 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 319 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 320 int i; 321 int offset = 0; 322 for (i = 0; i < (hfp_generic_status_indicators_nr-1); i++) { 323 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 324 } 325 if (i < hfp_generic_status_indicators_nr){ 326 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 327 } 328 return offset; 329 } 330 331 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 332 if (buffer_size < (hfp_generic_status_indicators_nr * 3)) return 0; 333 int i; 334 int offset = 0; 335 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 336 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); 337 } 338 return offset; 339 } 340 341 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 342 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 343 int i; 344 int offset = 0; 345 for (i = 0; i < (hfp_ag_indicators_nr-1); i++) { 346 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 347 } 348 if (i<hfp_ag_indicators_nr){ 349 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 350 } 351 return offset; 352 } 353 354 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 355 if (buffer_size < (hfp_ag_call_hold_services_nr * 3)) return 0; 356 int i; 357 int offset = snprintf(buffer, buffer_size, "("); 358 for (i = 0; i < (hfp_ag_call_hold_services_nr-1); i++) { 359 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 360 } 361 if (i<hfp_ag_call_hold_services_nr){ 362 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 363 } 364 return offset; 365 } 366 367 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 368 int start_segment, int num_segments, 369 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 370 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer)){ 371 372 // assumes: can send now == true 373 // assumes: num segments > 0 374 // assumes: individual segments are smaller than MTU 375 rfcomm_reserve_packet_buffer(); 376 int mtu = rfcomm_get_max_frame_size(cid); 377 uint8_t * data = rfcomm_get_outgoing_buffer(); 378 int offset = 0; 379 int segment = start_segment; 380 while (segment < num_segments){ 381 int segment_len = get_segment_len(hfp_connection, segment); 382 if ((offset + segment_len) > mtu) break; 383 // append segement 384 store_segment(hfp_connection, segment, data+offset); 385 offset += segment_len; 386 segment++; 387 } 388 rfcomm_send_prepared(cid, offset); 389 return segment; 390 } 391 392 // returns next segment to store 393 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 394 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 395 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 396 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 397 } 398 399 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 400 char buffer[40]; 401 const int size = sizeof(buffer); 402 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 403 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 404 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 405 return send_str_over_rfcomm(cid, buffer); 406 } 407 408 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 409 char buffer[40]; 410 const int size = sizeof(buffer); 411 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 412 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 413 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 414 return send_str_over_rfcomm(cid, buffer); 415 } 416 417 418 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 419 return hfp_ag_send_ok(cid); 420 } 421 422 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 423 char buffer[40]; 424 const int size = sizeof(buffer); 425 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 426 offset += hfp_hf_indicators_join(buffer+offset, size-offset-10); 427 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 428 return send_str_over_rfcomm(cid, buffer); 429 } 430 431 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 432 char buffer[40]; 433 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 434 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 435 return send_str_over_rfcomm(cid, buffer); 436 } 437 438 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 439 char buffer[20]; 440 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 441 return send_str_over_rfcomm(cid, buffer); 442 } 443 444 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 445 char buffer[41]; 446 if (strlen(op.name) == 0){ 447 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 448 } else { 449 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 450 offset += snprintf(buffer+offset, 16, "%s", op.name); 451 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 452 } 453 return send_str_over_rfcomm(cid, buffer); 454 } 455 456 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 457 char buffer[30]; 458 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 459 return send_str_over_rfcomm(cid, buffer); 460 } 461 462 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 463 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 464 } 465 466 static int hfp_ag_send_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 467 return hfp_ag_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 468 } 469 470 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 471 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 472 } 473 474 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 475 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 476 } 477 478 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 479 return hfp_ag_send_cmd_with_int(cid, HFP_RESPONSE_AND_HOLD, state); 480 } 481 482 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 483 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 484 485 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 486 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 487 return HFP_CODEC_MSBC; 488 } 489 } 490 return HFP_CODEC_CVSD; 491 } 492 493 /* state machines */ 494 495 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 496 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4)); 497 } 498 499 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 500 /* events ( == commands): 501 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 502 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 503 hf_trigger_codec_connection_setup == received BCC 504 ag_trigger_codec_connection_setup == received from AG to send BCS 505 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 506 */ 507 508 switch (hfp_connection->codecs_state){ 509 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 510 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 511 break; 512 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 513 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 514 break; 515 default: 516 break; 517 } 518 519 switch (hfp_connection->command){ 520 case HFP_CMD_AVAILABLE_CODECS: 521 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 522 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 523 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 524 return 1; 525 } 526 527 switch (hfp_connection->codecs_state){ 528 case HFP_CODECS_AG_SENT_COMMON_CODEC: 529 case HFP_CODECS_EXCHANGED: 530 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 531 break; 532 default: 533 break; 534 } 535 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 536 return 1; 537 538 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 539 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 540 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 541 return 1; 542 543 case HFP_CMD_AG_SEND_COMMON_CODEC: 544 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 545 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 546 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 547 return 1; 548 549 case HFP_CMD_HF_CONFIRMED_CODEC: 550 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 551 hfp_connection->codecs_state = HFP_CODECS_ERROR; 552 hfp_ag_send_error(hfp_connection->rfcomm_cid); 553 return 1; 554 } 555 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 556 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 557 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 558 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 559 // now, pick link settings 560 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 561 #ifdef ENABLE_CC256X_ASSISTED_HFP 562 hfp_cc256x_prepare_for_sco(hfp_connection); 563 #endif 564 return 1; 565 default: 566 break; 567 } 568 return 0; 569 } 570 571 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 572 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 573 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 574 575 // if active call exist, set per-hfp_connection state active, too (when audio is on) 576 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 577 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 578 } 579 // if AG is ringing, also start ringing on the HF 580 if ((hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS) && 581 (hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS)){ 582 hfp_ag_hf_start_ringing(hfp_connection); 583 } 584 } 585 586 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 587 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 588 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 589 int sent = 0; 590 switch(hfp_connection->command){ 591 case HFP_CMD_SUPPORTED_FEATURES: 592 switch(hfp_connection->state){ 593 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 594 case HFP_EXCHANGE_SUPPORTED_FEATURES: 595 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 596 if (has_codec_negotiation_feature(hfp_connection)){ 597 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 598 } else { 599 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 600 } 601 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 602 return 1; 603 default: 604 break; 605 } 606 break; 607 case HFP_CMD_AVAILABLE_CODECS: 608 sent = codecs_exchange_state_machine(hfp_connection); 609 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 610 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 611 } 612 return sent; 613 614 case HFP_CMD_RETRIEVE_AG_INDICATORS: 615 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 616 // HF requested AG Indicators and we did expect it 617 hfp_connection->send_ag_indicators_segment = 0; 618 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 619 // continue below in state switch 620 } 621 break; 622 623 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 624 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 625 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 626 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 627 return 1; 628 629 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 630 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 631 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 632 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 633 } else if (has_hf_indicators_feature(hfp_connection)){ 634 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 635 } else { 636 hfp_ag_slc_established(hfp_connection); 637 } 638 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 639 return 1; 640 641 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 642 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 643 if (has_hf_indicators_feature(hfp_connection)){ 644 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 645 } 646 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 647 if (!has_hf_indicators_feature(hfp_connection)){ 648 hfp_ag_slc_established(hfp_connection); 649 } 650 return 1; 651 652 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 653 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 654 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 655 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 656 return 1; 657 658 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 659 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 660 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 661 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 662 return 1; 663 664 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 665 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 666 hfp_ag_slc_established(hfp_connection); 667 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 668 return 1; 669 default: 670 break; 671 } 672 673 switch (hfp_connection->state){ 674 case HFP_RETRIEVE_INDICATORS: { 675 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 676 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 677 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 678 if (next_segment < num_segments){ 679 // prepare sending of next segment 680 hfp_connection->send_ag_indicators_segment = next_segment; 681 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 682 } else { 683 // done, go to next state 684 hfp_connection->send_ag_indicators_segment = 0; 685 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 686 } 687 return 1; 688 } 689 default: 690 break; 691 } 692 return 0; 693 } 694 695 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 696 int sent = codecs_exchange_state_machine(hfp_connection); 697 if (sent) return 1; 698 699 switch(hfp_connection->command){ 700 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 701 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 702 hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 703 return 1; 704 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 705 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 706 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 707 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 708 hfp_ag_setup_audio_connection(hfp_connection); 709 } else { 710 hfp_ag_send_error(hfp_connection->rfcomm_cid); 711 } 712 return 1; 713 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 714 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 715 return 1; 716 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 717 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 718 return 1; 719 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 720 if (hfp_connection->network_operator.format != 0){ 721 hfp_ag_send_error(hfp_connection->rfcomm_cid); 722 } else { 723 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 724 } 725 return 1; 726 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 727 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 728 return 1; 729 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 730 if (hfp_connection->extended_audio_gateway_error){ 731 hfp_connection->extended_audio_gateway_error = 0; 732 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 733 return 1; 734 } 735 break; 736 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 737 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 738 return 1; 739 default: 740 break; 741 } 742 return 0; 743 } 744 745 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 746 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 747 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 748 749 750 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 751 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 752 hfp_connection->release_audio_connection = 0; 753 gap_disconnect(hfp_connection->sco_handle); 754 return 1; 755 } 756 757 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 758 759 // run codecs exchange 760 int sent = codecs_exchange_state_machine(hfp_connection); 761 if (sent) return 1; 762 763 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 764 if (hfp_connection->establish_audio_connection){ 765 hfp_connection->state = HFP_W4_SCO_CONNECTED; 766 hfp_connection->establish_audio_connection = 0; 767 hfp_setup_synchronous_connection(hfp_connection); 768 return 1; 769 } 770 return 0; 771 } 772 773 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 774 btstack_linked_list_iterator_t it; 775 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 776 777 while (btstack_linked_list_iterator_has_next(&it)){ 778 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 779 if ( & hfp_connection->hfp_timeout == ts) { 780 return hfp_connection; 781 } 782 } 783 return NULL; 784 } 785 786 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 787 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 788 if (!hfp_connection) return; 789 790 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 791 hfp_connection->ag_ring = 1; 792 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 793 794 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 795 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 796 797 hfp_ag_run_for_context(hfp_connection); 798 } 799 800 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 801 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 802 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 803 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 804 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 805 } 806 807 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 808 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 809 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 810 } 811 812 // 813 // transitition implementations for hfp_ag_call_state_machine 814 // 815 816 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 817 if (use_in_band_tone()){ 818 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 819 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 820 } else { 821 hfp_timeout_start(hfp_connection); 822 hfp_connection->ag_ring = 1; 823 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 824 hfp_connection->call_state = HFP_CALL_RINGING; 825 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 826 } 827 } 828 829 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 830 hfp_connection->ag_ring = 0; 831 hfp_connection->ag_send_clip = 0; 832 hfp_timeout_stop(hfp_connection); 833 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 834 } 835 836 static void hfp_ag_trigger_incoming_call(void){ 837 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 838 if (indicator_index < 0) return; 839 840 btstack_linked_list_iterator_t it; 841 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 842 while (btstack_linked_list_iterator_has_next(&it)){ 843 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 844 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 845 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 846 if (hfp_connection->call_state == HFP_CALL_IDLE){ 847 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 848 hfp_ag_hf_start_ringing(hfp_connection); 849 } 850 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 851 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 852 } 853 hfp_ag_run_for_context(hfp_connection); 854 } 855 } 856 857 static void hfp_ag_transfer_indicator(const char * name){ 858 int indicator_index = get_ag_indicator_index_for_name(name); 859 if (indicator_index < 0) return; 860 861 btstack_linked_list_iterator_t it; 862 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 863 while (btstack_linked_list_iterator_has_next(&it)){ 864 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 865 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 866 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 867 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 868 hfp_ag_run_for_context(hfp_connection); 869 } 870 } 871 872 static void hfp_ag_transfer_callsetup_state(void){ 873 hfp_ag_transfer_indicator("callsetup"); 874 } 875 876 static void hfp_ag_transfer_call_state(void){ 877 hfp_ag_transfer_indicator("call"); 878 } 879 880 static void hfp_ag_transfer_callheld_state(void){ 881 hfp_ag_transfer_indicator("callheld"); 882 } 883 884 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 885 886 int call_indicator_index = get_ag_indicator_index_for_name("call"); 887 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 888 889 btstack_linked_list_iterator_t it; 890 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 891 while (btstack_linked_list_iterator_has_next(&it)){ 892 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 893 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 894 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 895 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 896 897 hfp_ag_hf_stop_ringing(hfp_connection); 898 if (hfp_connection == source){ 899 900 if (use_in_band_tone()){ 901 hfp_connection->call_state = HFP_CALL_ACTIVE; 902 } else { 903 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 904 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 905 } 906 907 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 908 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 909 910 } else { 911 hfp_connection->call_state = HFP_CALL_IDLE; 912 } 913 hfp_ag_run_for_context(hfp_connection); 914 } 915 } 916 917 static void hfp_ag_ag_accept_call(void){ 918 919 int call_indicator_index = get_ag_indicator_index_for_name("call"); 920 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 921 922 btstack_linked_list_iterator_t it; 923 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 924 while (btstack_linked_list_iterator_has_next(&it)){ 925 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 926 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 927 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 928 929 hfp_ag_hf_stop_ringing(hfp_connection); 930 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 931 932 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 933 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 934 935 hfp_ag_run_for_context(hfp_connection); 936 break; // only single 937 } 938 } 939 940 static void hfp_ag_trigger_reject_call(void){ 941 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 942 btstack_linked_list_iterator_t it; 943 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 944 while (btstack_linked_list_iterator_has_next(&it)){ 945 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 946 if (connection->local_role != HFP_ROLE_AG) continue; 947 if ((connection->call_state != HFP_CALL_RINGING) && 948 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 949 hfp_ag_hf_stop_ringing(connection); 950 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 951 connection->call_state = HFP_CALL_IDLE; 952 hfp_ag_run_for_context(connection); 953 } 954 } 955 956 static void hfp_ag_trigger_terminate_call(void){ 957 int call_indicator_index = get_ag_indicator_index_for_name("call"); 958 959 btstack_linked_list_iterator_t it; 960 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 961 while (btstack_linked_list_iterator_has_next(&it)){ 962 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 963 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 964 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 965 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 966 hfp_connection->call_state = HFP_CALL_IDLE; 967 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 968 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 969 hfp_connection->release_audio_connection = 1; 970 } 971 hfp_ag_run_for_context(hfp_connection); 972 } 973 hfp_ag_emit_simple_event(HFP_SUBEVENT_CALL_TERMINATED); 974 } 975 976 static void hfp_ag_set_callsetup_indicator(void){ 977 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 978 if (!indicator){ 979 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 980 return; 981 }; 982 indicator->status = hfp_gsm_callsetup_status(); 983 } 984 985 static void hfp_ag_set_callheld_indicator(void){ 986 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 987 if (!indicator){ 988 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 989 return; 990 }; 991 indicator->status = hfp_gsm_callheld_status(); 992 } 993 994 static void hfp_ag_set_call_indicator(void){ 995 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 996 if (!indicator){ 997 log_error("hfp_ag_set_call_state: call indicator is missing"); 998 return; 999 }; 1000 indicator->status = hfp_gsm_call_status(); 1001 } 1002 1003 static void hfp_ag_stop_ringing(void){ 1004 btstack_linked_list_iterator_t it; 1005 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1006 while (btstack_linked_list_iterator_has_next(&it)){ 1007 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1008 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1009 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1010 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1011 hfp_ag_hf_stop_ringing(hfp_connection); 1012 } 1013 } 1014 1015 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1016 btstack_linked_list_iterator_t it; 1017 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1018 while (btstack_linked_list_iterator_has_next(&it)){ 1019 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1020 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1021 if (hfp_connection->call_state == call_state) return hfp_connection; 1022 } 1023 return NULL; 1024 } 1025 1026 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1027 btstack_linked_list_iterator_t it; 1028 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1029 while (btstack_linked_list_iterator_has_next(&it)){ 1030 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1031 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1032 hfp_connection->send_response_and_hold_status = state + 1; 1033 } 1034 } 1035 1036 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1037 int indicator_index; 1038 switch (hfp_connection->call_state){ 1039 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1040 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1041 // we got event: audio hfp_connection established 1042 hfp_timeout_start(hfp_connection); 1043 hfp_connection->ag_ring = 1; 1044 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1045 hfp_connection->call_state = HFP_CALL_RINGING; 1046 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1047 break; 1048 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1049 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1050 // we got event: audio hfp_connection established 1051 hfp_connection->call_state = HFP_CALL_ACTIVE; 1052 break; 1053 case HFP_CALL_W2_SEND_CALL_WAITING: 1054 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1055 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1056 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1057 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1058 break; 1059 default: 1060 break; 1061 } 1062 return 0; 1063 } 1064 1065 // functions extracted from hfp_ag_call_sm below 1066 static void hfp_ag_handle_reject_incoming_call(void){ 1067 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1068 if (!hfp_connection){ 1069 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1070 return; 1071 } 1072 1073 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1074 hfp_connection->call_state = HFP_CALL_IDLE; 1075 hfp_connection->send_error = 1; 1076 hfp_ag_run_for_context(hfp_connection); 1077 } 1078 1079 // hfp_connection is used to identify originating HF 1080 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1081 int indicator_index; 1082 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1083 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1084 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1085 1086 switch (event){ 1087 case HFP_AG_INCOMING_CALL: 1088 switch (hfp_gsm_call_status()){ 1089 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1090 switch (hfp_gsm_callsetup_status()){ 1091 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1092 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1093 hfp_ag_set_callsetup_indicator(); 1094 hfp_ag_trigger_incoming_call(); 1095 log_info("AG rings"); 1096 break; 1097 default: 1098 break; 1099 } 1100 break; 1101 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1102 switch (hfp_gsm_callsetup_status()){ 1103 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1104 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1105 hfp_ag_set_callsetup_indicator(); 1106 hfp_ag_trigger_incoming_call(); 1107 log_info("AG call waiting"); 1108 break; 1109 default: 1110 break; 1111 } 1112 break; 1113 default: 1114 break; 1115 } 1116 break; 1117 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1118 switch (hfp_gsm_call_status()){ 1119 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1120 switch (hfp_gsm_callsetup_status()){ 1121 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1122 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1123 hfp_ag_set_call_indicator(); 1124 hfp_ag_set_callsetup_indicator(); 1125 hfp_ag_ag_accept_call(); 1126 log_info("AG answers call, accept call by GSM"); 1127 break; 1128 default: 1129 break; 1130 } 1131 break; 1132 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1133 switch (hfp_gsm_callsetup_status()){ 1134 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1135 log_info("AG: current call is placed on hold, incoming call gets active"); 1136 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1137 hfp_ag_set_callsetup_indicator(); 1138 hfp_ag_set_callheld_indicator(); 1139 hfp_ag_transfer_callsetup_state(); 1140 hfp_ag_transfer_callheld_state(); 1141 break; 1142 default: 1143 break; 1144 } 1145 break; 1146 default: 1147 break; 1148 } 1149 break; 1150 1151 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1152 switch (hfp_gsm_call_status()){ 1153 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1154 switch (hfp_gsm_callheld_status()){ 1155 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1156 log_info("AG: joining held call with active call"); 1157 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1158 hfp_ag_set_callheld_indicator(); 1159 hfp_ag_transfer_callheld_state(); 1160 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1161 break; 1162 default: 1163 break; 1164 } 1165 break; 1166 default: 1167 break; 1168 } 1169 break; 1170 1171 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1172 switch (hfp_gsm_call_status()){ 1173 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1174 switch (hfp_gsm_callsetup_status()){ 1175 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1176 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1177 hfp_ag_set_callsetup_indicator(); 1178 hfp_ag_set_call_indicator(); 1179 hfp_ag_hf_accept_call(hfp_connection); 1180 hfp_connection->ok_pending = 1; 1181 log_info("HF answers call, accept call by GSM"); 1182 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1183 break; 1184 default: 1185 break; 1186 } 1187 break; 1188 default: 1189 break; 1190 } 1191 break; 1192 1193 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1194 switch (hfp_gsm_call_status()){ 1195 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1196 switch (hfp_gsm_callsetup_status()){ 1197 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1198 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1199 hfp_ag_response_and_hold_active = 1; 1200 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1201 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1202 // as with regualr call 1203 hfp_ag_set_call_indicator(); 1204 hfp_ag_set_callsetup_indicator(); 1205 hfp_ag_ag_accept_call(); 1206 log_info("AG response and hold - hold by AG"); 1207 break; 1208 default: 1209 break; 1210 } 1211 break; 1212 default: 1213 break; 1214 } 1215 break; 1216 1217 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1218 switch (hfp_gsm_call_status()){ 1219 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1220 switch (hfp_gsm_callsetup_status()){ 1221 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1222 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1223 hfp_ag_response_and_hold_active = 1; 1224 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1225 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1226 // as with regualr call 1227 hfp_ag_set_call_indicator(); 1228 hfp_ag_set_callsetup_indicator(); 1229 hfp_ag_hf_accept_call(hfp_connection); 1230 log_info("AG response and hold - hold by HF"); 1231 break; 1232 default: 1233 break; 1234 } 1235 break; 1236 default: 1237 break; 1238 } 1239 break; 1240 1241 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1242 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1243 if (!hfp_ag_response_and_hold_active) break; 1244 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1245 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1246 hfp_ag_response_and_hold_active = 0; 1247 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1248 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1249 log_info("Held Call accepted and active"); 1250 break; 1251 1252 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1253 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1254 if (!hfp_ag_response_and_hold_active) break; 1255 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1256 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1257 hfp_ag_response_and_hold_active = 0; 1258 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1259 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1260 // from terminate by ag 1261 hfp_ag_set_call_indicator(); 1262 hfp_ag_trigger_terminate_call(); 1263 break; 1264 1265 case HFP_AG_TERMINATE_CALL_BY_HF: 1266 switch (hfp_gsm_call_status()){ 1267 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1268 switch (hfp_gsm_callsetup_status()){ 1269 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1270 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1271 hfp_ag_set_callsetup_indicator(); 1272 hfp_ag_transfer_callsetup_state(); 1273 hfp_ag_trigger_reject_call(); 1274 log_info("HF Rejected Incoming call, AG terminate call"); 1275 break; 1276 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1277 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1278 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1279 hfp_ag_set_callsetup_indicator(); 1280 hfp_ag_transfer_callsetup_state(); 1281 log_info("AG terminate outgoing call process"); 1282 break; 1283 default: 1284 break; 1285 } 1286 break; 1287 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1288 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1289 hfp_ag_set_callsetup_indicator(); 1290 hfp_ag_set_call_indicator(); 1291 hfp_ag_trigger_terminate_call(); 1292 log_info("AG terminate call"); 1293 break; 1294 default: 1295 break; 1296 } 1297 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1298 break; 1299 1300 case HFP_AG_TERMINATE_CALL_BY_AG: 1301 switch (hfp_gsm_call_status()){ 1302 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1303 switch (hfp_gsm_callsetup_status()){ 1304 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1305 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1306 hfp_ag_set_callsetup_indicator(); 1307 hfp_ag_trigger_reject_call(); 1308 log_info("AG Rejected Incoming call, AG terminate call"); 1309 break; 1310 default: 1311 break; 1312 } 1313 break; 1314 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1315 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1316 hfp_ag_set_callsetup_indicator(); 1317 hfp_ag_set_call_indicator(); 1318 hfp_ag_trigger_terminate_call(); 1319 log_info("AG terminate call"); 1320 break; 1321 default: 1322 break; 1323 } 1324 break; 1325 case HFP_AG_CALL_DROPPED: 1326 switch (hfp_gsm_call_status()){ 1327 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1328 switch (hfp_gsm_callsetup_status()){ 1329 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1330 hfp_ag_stop_ringing(); 1331 log_info("Incoming call interrupted"); 1332 break; 1333 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1334 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1335 log_info("Outgoing call interrupted\n"); 1336 log_info("AG notify call dropped\n"); 1337 break; 1338 default: 1339 break; 1340 } 1341 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1342 hfp_ag_set_callsetup_indicator(); 1343 hfp_ag_transfer_callsetup_state(); 1344 hfp_ag_trigger_terminate_call(); 1345 break; 1346 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1347 if (hfp_ag_response_and_hold_active) { 1348 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1349 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1350 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1351 } 1352 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1353 hfp_ag_set_callsetup_indicator(); 1354 hfp_ag_set_call_indicator(); 1355 hfp_ag_trigger_terminate_call(); 1356 log_info("AG notify call dropped"); 1357 break; 1358 default: 1359 break; 1360 } 1361 break; 1362 1363 case HFP_AG_OUTGOING_CALL_INITIATED: 1364 // directly reject call if number of free slots is exceeded 1365 if (!hfp_gsm_call_possible()){ 1366 hfp_connection->send_error = 1; 1367 hfp_ag_run_for_context(hfp_connection); 1368 break; 1369 } 1370 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1371 1372 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1373 1374 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1375 break; 1376 1377 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1378 // directly reject call if number of free slots is exceeded 1379 if (!hfp_gsm_call_possible()){ 1380 hfp_connection->send_error = 1; 1381 hfp_ag_run_for_context(hfp_connection); 1382 break; 1383 } 1384 1385 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1386 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1387 1388 log_info("Redial last number"); 1389 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1390 1391 if (strlen(last_dialed_number) > 0){ 1392 log_info("Last number exists: accept call"); 1393 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1394 } else { 1395 log_info("log_infoLast number missing: reject call"); 1396 hfp_ag_handle_reject_incoming_call(); 1397 } 1398 break; 1399 } 1400 case HFP_AG_OUTGOING_CALL_REJECTED: 1401 hfp_ag_handle_reject_incoming_call(); 1402 break; 1403 1404 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1405 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1406 if (!hfp_connection){ 1407 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1408 break; 1409 } 1410 1411 hfp_connection->ok_pending = 1; 1412 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1413 1414 // trigger callsetup to be 1415 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1416 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1417 1418 hfp_ag_set_callsetup_indicator(); 1419 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1420 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1421 1422 // put current call on hold if active 1423 if (put_call_on_hold){ 1424 log_info("AG putting current call on hold for new outgoing calllog_info"); 1425 hfp_ag_set_callheld_indicator(); 1426 indicator_index = get_ag_indicator_index_for_name("callheld"); 1427 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1428 } 1429 1430 // start audio if needed 1431 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1432 break; 1433 } 1434 case HFP_AG_OUTGOING_CALL_RINGING: 1435 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1436 if (!hfp_connection){ 1437 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1438 break; 1439 } 1440 1441 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1442 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1443 hfp_ag_set_callsetup_indicator(); 1444 hfp_ag_transfer_callsetup_state(); 1445 break; 1446 1447 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1448 // get outgoing call 1449 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1450 if (!hfp_connection){ 1451 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1452 } 1453 if (!hfp_connection){ 1454 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1455 break; 1456 } 1457 1458 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1459 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1460 hfp_connection->call_state = HFP_CALL_ACTIVE; 1461 hfp_ag_set_callsetup_indicator(); 1462 hfp_ag_set_call_indicator(); 1463 hfp_ag_transfer_call_state(); 1464 hfp_ag_transfer_callsetup_state(); 1465 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1466 hfp_ag_set_callheld_indicator(); 1467 hfp_ag_transfer_callheld_state(); 1468 } 1469 break; 1470 } 1471 1472 case HFP_AG_CALL_HOLD_USER_BUSY: 1473 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1474 hfp_ag_set_callsetup_indicator(); 1475 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1476 hfp_connection->call_state = HFP_CALL_ACTIVE; 1477 log_info("AG: Call Waiting, User Busy"); 1478 break; 1479 1480 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1481 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1482 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1483 1484 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1485 if (call_held || call_setup_in_progress){ 1486 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1487 0, NULL); 1488 1489 } 1490 1491 if (call_setup_in_progress){ 1492 log_info("AG: Call Dropped, Accept new call"); 1493 hfp_ag_set_callsetup_indicator(); 1494 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1495 } else { 1496 log_info("AG: Call Dropped, Resume held call"); 1497 } 1498 if (call_held){ 1499 hfp_ag_set_callheld_indicator(); 1500 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1501 } 1502 1503 hfp_connection->call_state = HFP_CALL_ACTIVE; 1504 break; 1505 } 1506 1507 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1508 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1509 // only update if callsetup changed 1510 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1511 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1512 NULL); 1513 1514 if (call_setup_in_progress){ 1515 log_info("AG: Call on Hold, Accept new call"); 1516 hfp_ag_set_callsetup_indicator(); 1517 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1518 } else { 1519 log_info("AG: Swap calls"); 1520 } 1521 1522 hfp_ag_set_callheld_indicator(); 1523 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1524 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1525 hfp_connection->call_state = HFP_CALL_ACTIVE; 1526 break; 1527 } 1528 1529 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1530 // Adds a held call to the conversation. 1531 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1532 log_info("AG: Join 3-way-call"); 1533 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1534 hfp_ag_set_callheld_indicator(); 1535 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1536 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1537 } 1538 hfp_connection->call_state = HFP_CALL_ACTIVE; 1539 break; 1540 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1541 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1542 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1543 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1544 hfp_ag_set_call_indicator(); 1545 hfp_ag_set_callheld_indicator(); 1546 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1547 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1548 hfp_connection->call_state = HFP_CALL_IDLE; 1549 break; 1550 1551 default: 1552 break; 1553 } 1554 1555 1556 } 1557 1558 1559 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1560 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1561 if (!active_call) return; 1562 1563 int idx = active_call->index; 1564 hfp_enhanced_call_dir_t dir = active_call->direction; 1565 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1566 hfp_enhanced_call_mode_t mode = active_call->mode; 1567 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1568 uint8_t type = active_call->clip_type; 1569 char * number = active_call->clip_number; 1570 1571 char buffer[100]; 1572 // TODO: check length of a buffer, to fit the MTU 1573 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1574 if (number){ 1575 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1576 } 1577 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1578 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, 1579 mode, mpty, type, number); 1580 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1581 } 1582 1583 1584 // sends pending command, returns if command was sent 1585 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1586 1587 if (hfp_connection->send_status_of_current_calls){ 1588 hfp_connection->ok_pending = 0; 1589 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1590 hfp_connection->next_call_index++; 1591 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1592 return 1; 1593 } else { 1594 // 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 1595 hfp_connection->next_call_index = 0; 1596 hfp_connection->ok_pending = 1; 1597 hfp_connection->send_status_of_current_calls = 0; 1598 } 1599 } 1600 1601 if (hfp_connection->ag_notify_incoming_call_waiting){ 1602 hfp_connection->ag_notify_incoming_call_waiting = 0; 1603 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1604 return 1; 1605 } 1606 1607 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1608 hfp_connection->ok_pending = 0; 1609 hfp_connection->send_error = 0; 1610 hfp_connection->command = HFP_CMD_NONE; 1611 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1612 return 1; 1613 } 1614 1615 if (hfp_connection->send_error){ 1616 hfp_connection->send_error = 0; 1617 hfp_connection->command = HFP_CMD_NONE; 1618 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1619 return 1; 1620 } 1621 1622 // note: before update AG indicators and ok_pending 1623 if (hfp_connection->send_response_and_hold_status){ 1624 int status = hfp_connection->send_response_and_hold_status - 1; 1625 hfp_connection->send_response_and_hold_status = 0; 1626 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1627 return 1; 1628 } 1629 1630 if (hfp_connection->ok_pending){ 1631 hfp_connection->ok_pending = 0; 1632 hfp_connection->command = HFP_CMD_NONE; 1633 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1634 return 1; 1635 } 1636 1637 // update AG indicators 1638 if (hfp_connection->ag_indicators_status_update_bitmap){ 1639 int i; 1640 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1641 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1642 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1643 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1644 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1645 break; 1646 } 1647 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1648 return 1; 1649 } 1650 } 1651 } 1652 1653 if (hfp_connection->ag_ring){ 1654 hfp_connection->ag_ring = 0; 1655 hfp_connection->command = HFP_CMD_NONE; 1656 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1657 return 1; 1658 } 1659 1660 if (hfp_connection->ag_send_clip){ 1661 hfp_connection->ag_send_clip = 0; 1662 hfp_connection->command = HFP_CMD_NONE; 1663 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1664 return 1; 1665 } 1666 1667 if (hfp_connection->send_phone_number_for_voice_tag){ 1668 hfp_connection->send_phone_number_for_voice_tag = 0; 1669 hfp_connection->command = HFP_CMD_NONE; 1670 hfp_connection->ok_pending = 1; 1671 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1672 return 1; 1673 } 1674 1675 if (hfp_connection->send_subscriber_number){ 1676 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1677 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1678 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1679 } else { 1680 hfp_connection->send_subscriber_number = 0; 1681 hfp_connection->next_subscriber_number_to_send = 0; 1682 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1683 } 1684 hfp_connection->command = HFP_CMD_NONE; 1685 return 1; 1686 } 1687 1688 if (hfp_connection->send_microphone_gain){ 1689 hfp_connection->send_microphone_gain = 0; 1690 hfp_connection->command = HFP_CMD_NONE; 1691 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1692 return 1; 1693 } 1694 1695 if (hfp_connection->send_speaker_gain){ 1696 hfp_connection->send_speaker_gain = 0; 1697 hfp_connection->command = HFP_CMD_NONE; 1698 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1699 return 1; 1700 } 1701 1702 if (hfp_connection->send_ag_status_indicators){ 1703 hfp_connection->send_ag_status_indicators = 0; 1704 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1705 return 1; 1706 } 1707 1708 return 0; 1709 } 1710 1711 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1712 1713 btstack_assert(hfp_connection != NULL); 1714 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1715 1716 // during SDP query, RFCOMM CID is not set 1717 if (hfp_connection->rfcomm_cid == 0) return; 1718 1719 // assert command could be sent 1720 if (hci_can_send_command_packet_now() == 0) return; 1721 1722 #ifdef ENABLE_CC256X_ASSISTED_HFP 1723 // WBS Disassociate 1724 if (hfp_connection->cc256x_send_wbs_disassociate){ 1725 hfp_connection->cc256x_send_wbs_disassociate = false; 1726 hci_send_cmd(&hci_ti_wbs_disassociate); 1727 return; 1728 } 1729 // Write Codec Config 1730 if (hfp_connection->cc256x_send_write_codec_config){ 1731 hfp_connection->cc256x_send_write_codec_config = false; 1732 hfp_cc256x_write_codec_config(hfp_connection); 1733 return; 1734 } 1735 // WBS Associate 1736 if (hfp_connection->cc256x_send_wbs_associate){ 1737 hfp_connection->cc256x_send_wbs_associate = false; 1738 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 1739 return; 1740 } 1741 #endif 1742 #ifdef ENABLE_BCM_PCM_WBS 1743 // Enable WBS 1744 if (hfp_connection->bcm_send_enable_wbs){ 1745 hfp_connection->bcm_send_enable_wbs = false; 1746 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 1747 return; 1748 } 1749 // Write I2S/PCM params 1750 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 1751 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 1752 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 1753 return; 1754 } 1755 // Disable WBS 1756 if (hfp_connection->bcm_send_disable_wbs){ 1757 hfp_connection->bcm_send_disable_wbs = false; 1758 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 1759 return; 1760 } 1761 #endif 1762 1763 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1764 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1765 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1766 return; 1767 } 1768 1769 int cmd_sent = hfp_ag_send_commands(hfp_connection); 1770 1771 // trigger codec exchange if requested by app 1772 if (hfp_connection->trigger_codec_exchange){ 1773 log_info("trigger codec, command %u, codec state %u", hfp_connection->command, hfp_connection->codecs_state); 1774 } 1775 1776 if (hfp_connection->trigger_codec_exchange && (hfp_connection->command == HFP_CMD_NONE)){ 1777 switch (hfp_connection->codecs_state){ 1778 case HFP_CODECS_IDLE: 1779 case HFP_CODECS_RECEIVED_LIST: 1780 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1781 case HFP_CODECS_ERROR: 1782 hfp_connection->trigger_codec_exchange = 0; 1783 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1784 break; 1785 default: 1786 break; 1787 } 1788 } 1789 1790 if (!cmd_sent){ 1791 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1792 } 1793 1794 if (!cmd_sent){ 1795 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1796 } 1797 1798 if (!cmd_sent){ 1799 cmd_sent = call_setup_state_machine(hfp_connection); 1800 } 1801 1802 if (!cmd_sent){ 1803 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1804 } 1805 1806 if ((hfp_connection->command == HFP_CMD_NONE) && !cmd_sent){ 1807 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1808 switch(hfp_connection->state){ 1809 case HFP_W2_DISCONNECT_RFCOMM: 1810 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1811 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1812 break; 1813 default: 1814 break; 1815 } 1816 } 1817 1818 if (cmd_sent){ 1819 hfp_connection->command = HFP_CMD_NONE; 1820 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1821 } 1822 } 1823 1824 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1825 int i; 1826 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1827 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1828 if (indicator->uuid == number){ 1829 return indicator; 1830 } 1831 } 1832 return NULL; 1833 } 1834 1835 static int hfp_parser_is_end_of_line(uint8_t byte){ 1836 return (byte == '\n') || (byte == '\r'); 1837 } 1838 1839 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1840 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1841 1842 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1843 if (size < 1) return; 1844 1845 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1846 if (!hfp_connection) return; 1847 1848 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 1849 #ifdef ENABLE_HFP_AT_MESSAGES 1850 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1851 #endif 1852 1853 // process messages byte-wise 1854 int pos; 1855 for (pos = 0; pos < size ; pos++){ 1856 hfp_parse(hfp_connection, packet[pos], 0); 1857 1858 // parse until end of line 1859 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1860 1861 hfp_generic_status_indicator_t * indicator; 1862 switch(hfp_connection->command){ 1863 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1864 if (hfp_ag_response_and_hold_active){ 1865 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1866 } 1867 hfp_connection->ok_pending = 1; 1868 break; 1869 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1870 switch(hfp_connection->ag_response_and_hold_action){ 1871 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1872 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1873 break; 1874 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1875 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1876 break; 1877 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1878 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1879 break; 1880 default: 1881 break; 1882 } 1883 hfp_connection->ok_pending = 1; 1884 break; 1885 case HFP_CMD_HF_INDICATOR_STATUS: 1886 hfp_connection->command = HFP_CMD_NONE; 1887 // find indicator by assigned number 1888 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1889 if (!indicator){ 1890 hfp_connection->send_error = 1; 1891 break; 1892 } 1893 switch (indicator->uuid){ 1894 case 1: // enhanced security 1895 if (hfp_connection->parser_indicator_value > 1) { 1896 hfp_connection->send_error = 1; 1897 return; 1898 } 1899 log_info("HF Indicator 'enhanced security' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1900 break; 1901 case 2: // battery level 1902 if (hfp_connection->parser_indicator_value > 100){ 1903 hfp_connection->send_error = 1; 1904 return; 1905 } 1906 log_info("HF Indicator 'battery' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1907 break; 1908 default: 1909 log_info("HF Indicator unknown set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1910 break; 1911 } 1912 hfp_connection->ok_pending = 1; 1913 break; 1914 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1915 // expected by SLC state machine 1916 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1917 hfp_connection->send_ag_indicators_segment = 0; 1918 hfp_connection->send_ag_status_indicators = 1; 1919 break; 1920 case HFP_CMD_LIST_CURRENT_CALLS: 1921 hfp_connection->command = HFP_CMD_NONE; 1922 hfp_connection->next_call_index = 0; 1923 hfp_connection->send_status_of_current_calls = 1; 1924 break; 1925 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1926 if (subscriber_numbers_count == 0){ 1927 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1928 break; 1929 } 1930 hfp_connection->next_subscriber_number_to_send = 0; 1931 hfp_connection->send_subscriber_number = 1; 1932 break; 1933 case HFP_CMD_TRANSMIT_DTMF_CODES: 1934 { 1935 hfp_connection->command = HFP_CMD_NONE; 1936 char buffer[2]; 1937 buffer[0] = (char) hfp_connection->ag_dtmf_code; 1938 buffer[1] = 0; 1939 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 1940 break; 1941 } 1942 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1943 hfp_connection->command = HFP_CMD_NONE; 1944 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1945 break; 1946 case HFP_CMD_TURN_OFF_EC_AND_NR: 1947 hfp_connection->command = HFP_CMD_NONE; 1948 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1949 hfp_connection->ok_pending = 1; 1950 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1951 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1952 } else { 1953 hfp_connection->send_error = 1; 1954 } 1955 break; 1956 case HFP_CMD_CALL_ANSWERED: 1957 hfp_connection->command = HFP_CMD_NONE; 1958 log_info("HFP: ATA"); 1959 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1960 break; 1961 case HFP_CMD_HANG_UP_CALL: 1962 hfp_connection->command = HFP_CMD_NONE; 1963 hfp_connection->ok_pending = 1; 1964 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1965 break; 1966 case HFP_CMD_CALL_HOLD: { 1967 hfp_connection->command = HFP_CMD_NONE; 1968 hfp_connection->ok_pending = 1; 1969 1970 switch (hfp_connection->ag_call_hold_action){ 1971 case 0: 1972 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1973 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1974 break; 1975 case 1: 1976 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1977 // Where both a held and a waiting call exist, the above procedures shall apply to the 1978 // waiting call (i.e., not to the held call) in conflicting situation. 1979 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1980 break; 1981 case 2: 1982 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1983 // Where both a held and a waiting call exist, the above procedures shall apply to the 1984 // waiting call (i.e., not to the held call) in conflicting situation. 1985 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1986 break; 1987 case 3: 1988 // Adds a held call to the conversation. 1989 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1990 break; 1991 case 4: 1992 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1993 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1994 break; 1995 default: 1996 break; 1997 } 1998 hfp_connection->call_index = 0; 1999 break; 2000 } 2001 case HFP_CMD_CALL_PHONE_NUMBER: 2002 hfp_connection->command = HFP_CMD_NONE; 2003 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 2004 break; 2005 case HFP_CMD_REDIAL_LAST_NUMBER: 2006 hfp_connection->command = HFP_CMD_NONE; 2007 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2008 break; 2009 case HFP_CMD_ENABLE_CLIP: 2010 hfp_connection->command = HFP_CMD_NONE; 2011 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2012 hfp_connection->ok_pending = 1; 2013 break; 2014 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2015 hfp_connection->command = HFP_CMD_NONE; 2016 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2017 hfp_connection->ok_pending = 1; 2018 break; 2019 case HFP_CMD_SET_SPEAKER_GAIN: 2020 hfp_connection->command = HFP_CMD_NONE; 2021 hfp_connection->ok_pending = 1; 2022 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2023 break; 2024 case HFP_CMD_SET_MICROPHONE_GAIN: 2025 hfp_connection->command = HFP_CMD_NONE; 2026 hfp_connection->ok_pending = 1; 2027 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2028 break; 2029 default: 2030 break; 2031 } 2032 } 2033 } 2034 2035 static void hfp_ag_run(void){ 2036 btstack_linked_list_iterator_t it; 2037 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2038 while (btstack_linked_list_iterator_has_next(&it)){ 2039 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2040 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2041 hfp_ag_run_for_context(hfp_connection); 2042 } 2043 } 2044 2045 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2046 switch (packet_type){ 2047 case RFCOMM_DATA_PACKET: 2048 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 2049 break; 2050 case HCI_EVENT_PACKET: 2051 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2052 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2053 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2054 return; 2055 } 2056 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2057 break; 2058 default: 2059 break; 2060 } 2061 2062 hfp_ag_run(); 2063 } 2064 2065 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2066 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2067 hfp_ag_run(); 2068 } 2069 2070 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2071 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2072 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2073 return; 2074 } 2075 int i; 2076 hfp_codecs_nr = codecs_nr; 2077 for (i=0; i < codecs_nr; i++){ 2078 hfp_codecs[i] = codecs[i]; 2079 } 2080 } 2081 2082 void hfp_ag_init_supported_features(uint32_t supported_features){ 2083 hfp_supported_features = supported_features; 2084 } 2085 2086 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2087 hfp_ag_indicators_nr = ag_indicators_nr; 2088 (void)memcpy(hfp_ag_indicators, ag_indicators, 2089 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2090 } 2091 2092 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2093 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2094 hfp_generic_status_indicators_nr = hf_indicators_nr; 2095 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2096 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2097 } 2098 2099 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2100 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2101 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2102 call_hold_services_nr * sizeof(char *)); 2103 } 2104 2105 2106 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2107 2108 hfp_init(); 2109 hfp_ag_call_hold_services_nr = 0; 2110 hfp_ag_response_and_hold_active = 0; 2111 hfp_ag_indicators_nr = 0; 2112 hfp_codecs_nr = 0; 2113 hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2114 subscriber_numbers = NULL; 2115 subscriber_numbers_count = 0; 2116 2117 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2118 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2119 2120 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2121 2122 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2123 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2124 2125 hfp_gsm_init(); 2126 } 2127 2128 void hfp_ag_deinit(void){ 2129 hfp_deinit(); 2130 hfp_gsm_deinit(); 2131 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2132 (void) memset(&hfp_ag_callback, 0, sizeof(btstack_packet_handler_t)); 2133 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2134 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2135 } 2136 2137 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2138 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2139 } 2140 2141 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2142 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2143 if (!hfp_connection){ 2144 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2145 return; 2146 } 2147 hfp_release_service_level_connection(hfp_connection); 2148 hfp_ag_run_for_context(hfp_connection); 2149 } 2150 2151 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2152 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2153 if (!hfp_connection){ 2154 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2155 return; 2156 } 2157 hfp_connection->extended_audio_gateway_error = 0; 2158 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2159 return; 2160 } 2161 hfp_connection->extended_audio_gateway_error = error; 2162 hfp_ag_run_for_context(hfp_connection); 2163 } 2164 2165 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2166 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2167 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2168 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2169 2170 hfp_connection->establish_audio_connection = 1; 2171 if (!has_codec_negotiation_feature(hfp_connection)){ 2172 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2173 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2174 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2175 // now, pick link settings 2176 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2177 #ifdef ENABLE_CC256X_ASSISTED_HFP 2178 hfp_cc256x_prepare_for_sco(hfp_connection); 2179 #endif 2180 return; 2181 } 2182 2183 hfp_connection->trigger_codec_exchange = 1; 2184 } 2185 2186 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2187 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2188 if (!hfp_connection){ 2189 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2190 return; 2191 } 2192 hfp_connection->trigger_codec_exchange = 0; 2193 hfp_connection->establish_audio_connection = 0; 2194 hfp_ag_setup_audio_connection(hfp_connection); 2195 hfp_ag_run_for_context(hfp_connection); 2196 } 2197 2198 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2199 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2200 if (!hfp_connection){ 2201 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2202 return; 2203 } 2204 hfp_release_audio_connection(hfp_connection); 2205 hfp_ag_run_for_context(hfp_connection); 2206 } 2207 2208 /** 2209 * @brief Enable in-band ring tone 2210 */ 2211 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2212 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2213 return; 2214 } 2215 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2216 2217 btstack_linked_list_iterator_t it; 2218 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2219 while (btstack_linked_list_iterator_has_next(&it)){ 2220 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2221 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2222 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2223 hfp_ag_run_for_context(hfp_connection); 2224 } 2225 } 2226 2227 /** 2228 * @brief Called from GSM 2229 */ 2230 void hfp_ag_incoming_call(void){ 2231 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2232 } 2233 2234 /** 2235 * @brief number is stored. 2236 */ 2237 void hfp_ag_set_clip(uint8_t type, const char * number){ 2238 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2239 } 2240 2241 void hfp_ag_call_dropped(void){ 2242 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2243 } 2244 2245 // call from AG UI 2246 void hfp_ag_answer_incoming_call(void){ 2247 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2248 } 2249 2250 void hfp_ag_join_held_call(void){ 2251 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2252 } 2253 2254 void hfp_ag_terminate_call(void){ 2255 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2256 } 2257 2258 void hfp_ag_outgoing_call_ringing(void){ 2259 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2260 } 2261 2262 void hfp_ag_outgoing_call_established(void){ 2263 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2264 } 2265 2266 void hfp_ag_outgoing_call_rejected(void){ 2267 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2268 } 2269 2270 void hfp_ag_outgoing_call_accepted(void){ 2271 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2272 } 2273 2274 void hfp_ag_hold_incoming_call(void){ 2275 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2276 } 2277 2278 void hfp_ag_accept_held_incoming_call(void) { 2279 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2280 } 2281 2282 void hfp_ag_reject_held_incoming_call(void){ 2283 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2284 } 2285 2286 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2287 int indicator_index = get_ag_indicator_index_for_name(name); 2288 if (indicator_index < 0) return; 2289 hfp_ag_indicators[indicator_index].status = value; 2290 2291 2292 btstack_linked_list_iterator_t it; 2293 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2294 while (btstack_linked_list_iterator_has_next(&it)){ 2295 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2296 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2297 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2298 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2299 continue; 2300 } 2301 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2302 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2303 hfp_ag_run_for_context(hfp_connection); 2304 } 2305 } 2306 2307 void hfp_ag_set_registration_status(int status){ 2308 hfp_ag_set_ag_indicator("service", status); 2309 } 2310 2311 void hfp_ag_set_signal_strength(int strength){ 2312 hfp_ag_set_ag_indicator("signal", strength); 2313 } 2314 2315 void hfp_ag_set_roaming_status(int status){ 2316 hfp_ag_set_ag_indicator("roam", status); 2317 } 2318 2319 void hfp_ag_set_battery_level(int level){ 2320 hfp_ag_set_ag_indicator("battchg", level); 2321 } 2322 2323 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2324 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2325 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2326 if (!hfp_connection){ 2327 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2328 return; 2329 } 2330 2331 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2332 log_info("AG cannot acivate voice recognition - not supported by HF"); 2333 return; 2334 } 2335 2336 if (activate){ 2337 hfp_ag_establish_audio_connection(acl_handle); 2338 } 2339 2340 hfp_connection->ag_activate_voice_recognition = activate; 2341 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2342 hfp_ag_run_for_context(hfp_connection); 2343 } 2344 2345 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2346 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2347 if (!hfp_connection){ 2348 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2349 return; 2350 } 2351 if (hfp_connection->microphone_gain != gain){ 2352 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2353 hfp_connection->microphone_gain = gain; 2354 hfp_connection->send_microphone_gain = 1; 2355 } 2356 hfp_ag_run_for_context(hfp_connection); 2357 } 2358 2359 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2360 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2361 if (!hfp_connection){ 2362 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2363 return; 2364 } 2365 if (hfp_connection->speaker_gain != gain){ 2366 hfp_connection->speaker_gain = gain; 2367 hfp_connection->send_speaker_gain = 1; 2368 } 2369 hfp_ag_run_for_context(hfp_connection); 2370 } 2371 2372 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2373 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2374 if (!hfp_connection){ 2375 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2376 return; 2377 } 2378 hfp_ag_set_clip(0, number); 2379 hfp_connection->send_phone_number_for_voice_tag = 1; 2380 } 2381 2382 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2383 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2384 if (!hfp_connection){ 2385 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2386 return; 2387 } 2388 hfp_connection->send_error = 1; 2389 } 2390 2391 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2392 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2393 if (!hfp_connection){ 2394 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2395 return; 2396 } 2397 hfp_connection->ok_pending = 1; 2398 } 2399 2400 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2401 subscriber_numbers = numbers; 2402 subscriber_numbers_count = numbers_count; 2403 } 2404 2405 void hfp_ag_clear_last_dialed_number(void){ 2406 hfp_gsm_clear_last_dialed_number(); 2407 } 2408 2409 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2410 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2411 if (!hfp_connection){ 2412 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2413 return; 2414 } 2415 if (!hfp_connection->call_waiting_notification_enabled) return; 2416 2417 hfp_connection->ag_notify_incoming_call_waiting = 1; 2418 hfp_ag_run_for_context(hfp_connection); 2419 } 2420 2421 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){ 2422 if (!name){ 2423 name = default_hfp_ag_service_name; 2424 } 2425 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2426 2427 /* 2428 * 0x01 – Ability to reject a call 2429 * 0x00 – No ability to reject a call 2430 */ 2431 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2432 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2433 2434 // Construct SupportedFeatures for SDP bitmap: 2435 // 2436 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2437 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2438 // 2439 // Wide band speech (bit 5) requires Codec negotiation 2440 // 2441 uint16_t sdp_features = supported_features & 0x1f; 2442 if (wide_band_speech && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2443 sdp_features |= 1 << 5; 2444 } 2445 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2446 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2447 } 2448 2449 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2450 if (callback == NULL){ 2451 log_error("hfp_ag_register_packet_handler called with NULL callback"); 2452 return; 2453 } 2454 hfp_ag_callback = callback; 2455 hfp_set_ag_callback(callback); 2456 } 2457