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 #ifdef ENABLE_HFP_AT_MESSAGES 390 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_SENT, (char *) data); 391 #endif 392 return segment; 393 } 394 395 // returns next segment to store 396 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 397 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 398 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 399 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 400 } 401 402 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 403 char buffer[40]; 404 const int size = sizeof(buffer); 405 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 406 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 407 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 408 return send_str_over_rfcomm(cid, buffer); 409 } 410 411 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 412 char buffer[40]; 413 const int size = sizeof(buffer); 414 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 415 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 416 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 417 return send_str_over_rfcomm(cid, buffer); 418 } 419 420 421 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 422 return hfp_ag_send_ok(cid); 423 } 424 425 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 426 char buffer[40]; 427 const int size = sizeof(buffer); 428 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 429 offset += hfp_hf_indicators_join(buffer+offset, size-offset-10); 430 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 431 return send_str_over_rfcomm(cid, buffer); 432 } 433 434 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 435 char buffer[40]; 436 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 437 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 438 return send_str_over_rfcomm(cid, buffer); 439 } 440 441 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 442 char buffer[20]; 443 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 444 return send_str_over_rfcomm(cid, buffer); 445 } 446 447 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 448 char buffer[41]; 449 if (strlen(op.name) == 0){ 450 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 451 } else { 452 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 453 offset += snprintf(buffer+offset, 16, "%s", op.name); 454 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 455 } 456 return send_str_over_rfcomm(cid, buffer); 457 } 458 459 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 460 char buffer[30]; 461 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 462 return send_str_over_rfcomm(cid, buffer); 463 } 464 465 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 466 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 467 } 468 469 static int hfp_ag_send_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 470 return hfp_ag_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 471 } 472 473 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 474 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 475 } 476 477 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 478 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 479 } 480 481 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 482 return hfp_ag_send_cmd_with_int(cid, HFP_RESPONSE_AND_HOLD, state); 483 } 484 485 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 486 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 487 488 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 489 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 490 return HFP_CODEC_MSBC; 491 } 492 } 493 return HFP_CODEC_CVSD; 494 } 495 496 /* state machines */ 497 498 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 499 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4)); 500 } 501 502 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 503 /* events ( == commands): 504 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 505 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 506 hf_trigger_codec_connection_setup == received BCC 507 ag_trigger_codec_connection_setup == received from AG to send BCS 508 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 509 */ 510 511 switch (hfp_connection->codecs_state){ 512 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 513 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 514 break; 515 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 516 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 517 break; 518 default: 519 break; 520 } 521 522 switch (hfp_connection->command){ 523 case HFP_CMD_AVAILABLE_CODECS: 524 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 525 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 526 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 527 return 1; 528 } 529 530 switch (hfp_connection->codecs_state){ 531 case HFP_CODECS_AG_SENT_COMMON_CODEC: 532 case HFP_CODECS_EXCHANGED: 533 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 534 break; 535 default: 536 break; 537 } 538 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 539 return 1; 540 541 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 542 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 543 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 544 return 1; 545 546 case HFP_CMD_AG_SEND_COMMON_CODEC: 547 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 548 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 549 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 550 return 1; 551 552 case HFP_CMD_HF_CONFIRMED_CODEC: 553 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 554 hfp_connection->codecs_state = HFP_CODECS_ERROR; 555 hfp_ag_send_error(hfp_connection->rfcomm_cid); 556 return 1; 557 } 558 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 559 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 560 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 561 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 562 // now, pick link settings 563 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 564 #ifdef ENABLE_CC256X_ASSISTED_HFP 565 hfp_cc256x_prepare_for_sco(hfp_connection); 566 #endif 567 return 1; 568 default: 569 break; 570 } 571 return 0; 572 } 573 574 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 575 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 576 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 577 578 // if active call exist, set per-hfp_connection state active, too (when audio is on) 579 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 580 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 581 } 582 // if AG is ringing, also start ringing on the HF 583 if ((hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS) && 584 (hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS)){ 585 hfp_ag_hf_start_ringing(hfp_connection); 586 } 587 } 588 589 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 590 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 591 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 592 int sent = 0; 593 switch(hfp_connection->command){ 594 case HFP_CMD_SUPPORTED_FEATURES: 595 switch(hfp_connection->state){ 596 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 597 case HFP_EXCHANGE_SUPPORTED_FEATURES: 598 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 599 if (has_codec_negotiation_feature(hfp_connection)){ 600 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 601 } else { 602 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 603 } 604 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 605 return 1; 606 default: 607 break; 608 } 609 break; 610 case HFP_CMD_AVAILABLE_CODECS: 611 sent = codecs_exchange_state_machine(hfp_connection); 612 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 613 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 614 } 615 return sent; 616 617 case HFP_CMD_RETRIEVE_AG_INDICATORS: 618 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 619 // HF requested AG Indicators and we did expect it 620 hfp_connection->send_ag_indicators_segment = 0; 621 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 622 // continue below in state switch 623 } 624 break; 625 626 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 627 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 628 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 629 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 630 return 1; 631 632 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 633 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 634 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 635 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 636 } else if (has_hf_indicators_feature(hfp_connection)){ 637 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 638 } else { 639 hfp_ag_slc_established(hfp_connection); 640 } 641 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 642 return 1; 643 644 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 645 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 646 if (has_hf_indicators_feature(hfp_connection)){ 647 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 648 } 649 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 650 if (!has_hf_indicators_feature(hfp_connection)){ 651 hfp_ag_slc_established(hfp_connection); 652 } 653 return 1; 654 655 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 656 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 657 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 658 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 659 return 1; 660 661 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 662 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 663 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 664 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 665 return 1; 666 667 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 668 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 669 hfp_ag_slc_established(hfp_connection); 670 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 671 return 1; 672 default: 673 break; 674 } 675 676 switch (hfp_connection->state){ 677 case HFP_RETRIEVE_INDICATORS: { 678 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 679 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 680 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 681 if (next_segment < num_segments){ 682 // prepare sending of next segment 683 hfp_connection->send_ag_indicators_segment = next_segment; 684 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 685 } else { 686 // done, go to next state 687 hfp_connection->send_ag_indicators_segment = 0; 688 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 689 } 690 return 1; 691 } 692 default: 693 break; 694 } 695 return 0; 696 } 697 698 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 699 int sent = codecs_exchange_state_machine(hfp_connection); 700 if (sent) return 1; 701 702 switch(hfp_connection->command){ 703 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 704 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 705 hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 706 return 1; 707 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 708 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 709 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 710 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 711 hfp_ag_setup_audio_connection(hfp_connection); 712 } else { 713 hfp_ag_send_error(hfp_connection->rfcomm_cid); 714 } 715 return 1; 716 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 717 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 718 return 1; 719 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 720 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 721 return 1; 722 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 723 if (hfp_connection->network_operator.format != 0){ 724 hfp_ag_send_error(hfp_connection->rfcomm_cid); 725 } else { 726 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 727 } 728 return 1; 729 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 730 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 731 return 1; 732 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 733 if (hfp_connection->extended_audio_gateway_error){ 734 hfp_connection->extended_audio_gateway_error = 0; 735 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 736 return 1; 737 } 738 break; 739 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 740 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 741 return 1; 742 default: 743 break; 744 } 745 return 0; 746 } 747 748 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 749 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 750 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 751 752 753 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 754 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 755 hfp_connection->release_audio_connection = 0; 756 gap_disconnect(hfp_connection->sco_handle); 757 return 1; 758 } 759 760 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 761 762 // run codecs exchange 763 int sent = codecs_exchange_state_machine(hfp_connection); 764 if (sent) return 1; 765 766 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 767 if (hfp_connection->establish_audio_connection){ 768 hfp_connection->state = HFP_W4_SCO_CONNECTED; 769 hfp_connection->establish_audio_connection = 0; 770 hfp_setup_synchronous_connection(hfp_connection); 771 return 1; 772 } 773 return 0; 774 } 775 776 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 777 btstack_linked_list_iterator_t it; 778 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 779 780 while (btstack_linked_list_iterator_has_next(&it)){ 781 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 782 if ( & hfp_connection->hfp_timeout == ts) { 783 return hfp_connection; 784 } 785 } 786 return NULL; 787 } 788 789 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 790 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 791 if (!hfp_connection) return; 792 793 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 794 hfp_connection->ag_ring = 1; 795 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 796 797 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 798 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 799 800 hfp_ag_run_for_context(hfp_connection); 801 } 802 803 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 804 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 805 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 806 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 807 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 808 } 809 810 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 811 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 812 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 813 } 814 815 // 816 // transitition implementations for hfp_ag_call_state_machine 817 // 818 819 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 820 if (use_in_band_tone()){ 821 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 822 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 823 } else { 824 hfp_timeout_start(hfp_connection); 825 hfp_connection->ag_ring = 1; 826 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 827 hfp_connection->call_state = HFP_CALL_RINGING; 828 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 829 } 830 } 831 832 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 833 hfp_connection->ag_ring = 0; 834 hfp_connection->ag_send_clip = 0; 835 hfp_timeout_stop(hfp_connection); 836 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 837 } 838 839 static void hfp_ag_trigger_incoming_call(void){ 840 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 841 if (indicator_index < 0) return; 842 843 btstack_linked_list_iterator_t it; 844 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 845 while (btstack_linked_list_iterator_has_next(&it)){ 846 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 847 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 848 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 849 if (hfp_connection->call_state == HFP_CALL_IDLE){ 850 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 851 hfp_ag_hf_start_ringing(hfp_connection); 852 } 853 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 854 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 855 } 856 hfp_ag_run_for_context(hfp_connection); 857 } 858 } 859 860 static void hfp_ag_transfer_indicator(const char * name){ 861 int indicator_index = get_ag_indicator_index_for_name(name); 862 if (indicator_index < 0) return; 863 864 btstack_linked_list_iterator_t it; 865 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 866 while (btstack_linked_list_iterator_has_next(&it)){ 867 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 868 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 869 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 870 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 871 hfp_ag_run_for_context(hfp_connection); 872 } 873 } 874 875 static void hfp_ag_transfer_callsetup_state(void){ 876 hfp_ag_transfer_indicator("callsetup"); 877 } 878 879 static void hfp_ag_transfer_call_state(void){ 880 hfp_ag_transfer_indicator("call"); 881 } 882 883 static void hfp_ag_transfer_callheld_state(void){ 884 hfp_ag_transfer_indicator("callheld"); 885 } 886 887 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 888 889 int call_indicator_index = get_ag_indicator_index_for_name("call"); 890 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 891 892 btstack_linked_list_iterator_t it; 893 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 894 while (btstack_linked_list_iterator_has_next(&it)){ 895 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 896 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 897 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 898 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 899 900 hfp_ag_hf_stop_ringing(hfp_connection); 901 if (hfp_connection == source){ 902 903 if (use_in_band_tone()){ 904 hfp_connection->call_state = HFP_CALL_ACTIVE; 905 } else { 906 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 907 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 908 } 909 910 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 911 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 912 913 } else { 914 hfp_connection->call_state = HFP_CALL_IDLE; 915 } 916 hfp_ag_run_for_context(hfp_connection); 917 } 918 } 919 920 static void hfp_ag_ag_accept_call(void){ 921 922 int call_indicator_index = get_ag_indicator_index_for_name("call"); 923 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 924 925 btstack_linked_list_iterator_t it; 926 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 927 while (btstack_linked_list_iterator_has_next(&it)){ 928 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 929 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 930 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 931 932 hfp_ag_hf_stop_ringing(hfp_connection); 933 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 934 935 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 936 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 937 938 hfp_ag_run_for_context(hfp_connection); 939 break; // only single 940 } 941 } 942 943 static void hfp_ag_trigger_reject_call(void){ 944 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 945 btstack_linked_list_iterator_t it; 946 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 947 while (btstack_linked_list_iterator_has_next(&it)){ 948 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 949 if (connection->local_role != HFP_ROLE_AG) continue; 950 if ((connection->call_state != HFP_CALL_RINGING) && 951 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 952 hfp_ag_hf_stop_ringing(connection); 953 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 954 connection->call_state = HFP_CALL_IDLE; 955 hfp_ag_run_for_context(connection); 956 } 957 } 958 959 static void hfp_ag_trigger_terminate_call(void){ 960 int call_indicator_index = get_ag_indicator_index_for_name("call"); 961 962 btstack_linked_list_iterator_t it; 963 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 964 while (btstack_linked_list_iterator_has_next(&it)){ 965 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 966 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 967 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 968 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 969 hfp_connection->call_state = HFP_CALL_IDLE; 970 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 971 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 972 hfp_connection->release_audio_connection = 1; 973 } 974 hfp_ag_run_for_context(hfp_connection); 975 } 976 hfp_ag_emit_simple_event(HFP_SUBEVENT_CALL_TERMINATED); 977 } 978 979 static void hfp_ag_set_callsetup_indicator(void){ 980 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 981 if (!indicator){ 982 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 983 return; 984 }; 985 indicator->status = hfp_gsm_callsetup_status(); 986 } 987 988 static void hfp_ag_set_callheld_indicator(void){ 989 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 990 if (!indicator){ 991 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 992 return; 993 }; 994 indicator->status = hfp_gsm_callheld_status(); 995 } 996 997 static void hfp_ag_set_call_indicator(void){ 998 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 999 if (!indicator){ 1000 log_error("hfp_ag_set_call_state: call indicator is missing"); 1001 return; 1002 }; 1003 indicator->status = hfp_gsm_call_status(); 1004 } 1005 1006 static void hfp_ag_stop_ringing(void){ 1007 btstack_linked_list_iterator_t it; 1008 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1009 while (btstack_linked_list_iterator_has_next(&it)){ 1010 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1011 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1012 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1013 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1014 hfp_ag_hf_stop_ringing(hfp_connection); 1015 } 1016 } 1017 1018 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1019 btstack_linked_list_iterator_t it; 1020 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1021 while (btstack_linked_list_iterator_has_next(&it)){ 1022 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1023 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1024 if (hfp_connection->call_state == call_state) return hfp_connection; 1025 } 1026 return NULL; 1027 } 1028 1029 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1030 btstack_linked_list_iterator_t it; 1031 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1032 while (btstack_linked_list_iterator_has_next(&it)){ 1033 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1034 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1035 hfp_connection->send_response_and_hold_status = state + 1; 1036 } 1037 } 1038 1039 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1040 int indicator_index; 1041 switch (hfp_connection->call_state){ 1042 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1043 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1044 // we got event: audio hfp_connection established 1045 hfp_timeout_start(hfp_connection); 1046 hfp_connection->ag_ring = 1; 1047 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1048 hfp_connection->call_state = HFP_CALL_RINGING; 1049 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1050 break; 1051 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1052 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1053 // we got event: audio hfp_connection established 1054 hfp_connection->call_state = HFP_CALL_ACTIVE; 1055 break; 1056 case HFP_CALL_W2_SEND_CALL_WAITING: 1057 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1058 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1059 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1060 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1061 break; 1062 default: 1063 break; 1064 } 1065 return 0; 1066 } 1067 1068 // functions extracted from hfp_ag_call_sm below 1069 static void hfp_ag_handle_reject_incoming_call(void){ 1070 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1071 if (!hfp_connection){ 1072 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1073 return; 1074 } 1075 1076 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1077 hfp_connection->call_state = HFP_CALL_IDLE; 1078 hfp_connection->send_error = 1; 1079 hfp_ag_run_for_context(hfp_connection); 1080 } 1081 1082 // hfp_connection is used to identify originating HF 1083 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1084 int indicator_index; 1085 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1086 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1087 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1088 1089 switch (event){ 1090 case HFP_AG_INCOMING_CALL: 1091 switch (hfp_gsm_call_status()){ 1092 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1093 switch (hfp_gsm_callsetup_status()){ 1094 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1095 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1096 hfp_ag_set_callsetup_indicator(); 1097 hfp_ag_trigger_incoming_call(); 1098 log_info("AG rings"); 1099 break; 1100 default: 1101 break; 1102 } 1103 break; 1104 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1105 switch (hfp_gsm_callsetup_status()){ 1106 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1107 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1108 hfp_ag_set_callsetup_indicator(); 1109 hfp_ag_trigger_incoming_call(); 1110 log_info("AG call waiting"); 1111 break; 1112 default: 1113 break; 1114 } 1115 break; 1116 default: 1117 break; 1118 } 1119 break; 1120 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1121 switch (hfp_gsm_call_status()){ 1122 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1123 switch (hfp_gsm_callsetup_status()){ 1124 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1125 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1126 hfp_ag_set_call_indicator(); 1127 hfp_ag_set_callsetup_indicator(); 1128 hfp_ag_ag_accept_call(); 1129 log_info("AG answers call, accept call by GSM"); 1130 break; 1131 default: 1132 break; 1133 } 1134 break; 1135 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1136 switch (hfp_gsm_callsetup_status()){ 1137 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1138 log_info("AG: current call is placed on hold, incoming call gets active"); 1139 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1140 hfp_ag_set_callsetup_indicator(); 1141 hfp_ag_set_callheld_indicator(); 1142 hfp_ag_transfer_callsetup_state(); 1143 hfp_ag_transfer_callheld_state(); 1144 break; 1145 default: 1146 break; 1147 } 1148 break; 1149 default: 1150 break; 1151 } 1152 break; 1153 1154 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1155 switch (hfp_gsm_call_status()){ 1156 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1157 switch (hfp_gsm_callheld_status()){ 1158 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1159 log_info("AG: joining held call with active call"); 1160 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1161 hfp_ag_set_callheld_indicator(); 1162 hfp_ag_transfer_callheld_state(); 1163 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1164 break; 1165 default: 1166 break; 1167 } 1168 break; 1169 default: 1170 break; 1171 } 1172 break; 1173 1174 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1175 switch (hfp_gsm_call_status()){ 1176 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1177 switch (hfp_gsm_callsetup_status()){ 1178 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1179 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1180 hfp_ag_set_callsetup_indicator(); 1181 hfp_ag_set_call_indicator(); 1182 hfp_ag_hf_accept_call(hfp_connection); 1183 hfp_connection->ok_pending = 1; 1184 log_info("HF answers call, accept call by GSM"); 1185 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1186 break; 1187 default: 1188 break; 1189 } 1190 break; 1191 default: 1192 break; 1193 } 1194 break; 1195 1196 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1197 switch (hfp_gsm_call_status()){ 1198 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1199 switch (hfp_gsm_callsetup_status()){ 1200 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1201 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1202 hfp_ag_response_and_hold_active = 1; 1203 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1204 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1205 // as with regualr call 1206 hfp_ag_set_call_indicator(); 1207 hfp_ag_set_callsetup_indicator(); 1208 hfp_ag_ag_accept_call(); 1209 log_info("AG response and hold - hold by AG"); 1210 break; 1211 default: 1212 break; 1213 } 1214 break; 1215 default: 1216 break; 1217 } 1218 break; 1219 1220 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1221 switch (hfp_gsm_call_status()){ 1222 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1223 switch (hfp_gsm_callsetup_status()){ 1224 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1225 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1226 hfp_ag_response_and_hold_active = 1; 1227 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1228 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1229 // as with regualr call 1230 hfp_ag_set_call_indicator(); 1231 hfp_ag_set_callsetup_indicator(); 1232 hfp_ag_hf_accept_call(hfp_connection); 1233 log_info("AG response and hold - hold by HF"); 1234 break; 1235 default: 1236 break; 1237 } 1238 break; 1239 default: 1240 break; 1241 } 1242 break; 1243 1244 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1245 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1246 if (!hfp_ag_response_and_hold_active) break; 1247 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1248 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1249 hfp_ag_response_and_hold_active = 0; 1250 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1251 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1252 log_info("Held Call accepted and active"); 1253 break; 1254 1255 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1256 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1257 if (!hfp_ag_response_and_hold_active) break; 1258 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1259 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1260 hfp_ag_response_and_hold_active = 0; 1261 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1262 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1263 // from terminate by ag 1264 hfp_ag_set_call_indicator(); 1265 hfp_ag_trigger_terminate_call(); 1266 break; 1267 1268 case HFP_AG_TERMINATE_CALL_BY_HF: 1269 switch (hfp_gsm_call_status()){ 1270 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1271 switch (hfp_gsm_callsetup_status()){ 1272 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1273 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1274 hfp_ag_set_callsetup_indicator(); 1275 hfp_ag_transfer_callsetup_state(); 1276 hfp_ag_trigger_reject_call(); 1277 log_info("HF Rejected Incoming call, AG terminate call"); 1278 break; 1279 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1280 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1281 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1282 hfp_ag_set_callsetup_indicator(); 1283 hfp_ag_transfer_callsetup_state(); 1284 log_info("AG terminate outgoing call process"); 1285 break; 1286 default: 1287 break; 1288 } 1289 break; 1290 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1291 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1292 hfp_ag_set_callsetup_indicator(); 1293 hfp_ag_set_call_indicator(); 1294 hfp_ag_trigger_terminate_call(); 1295 log_info("AG terminate call"); 1296 break; 1297 default: 1298 break; 1299 } 1300 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1301 break; 1302 1303 case HFP_AG_TERMINATE_CALL_BY_AG: 1304 switch (hfp_gsm_call_status()){ 1305 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1306 switch (hfp_gsm_callsetup_status()){ 1307 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1308 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1309 hfp_ag_set_callsetup_indicator(); 1310 hfp_ag_trigger_reject_call(); 1311 log_info("AG Rejected Incoming call, AG terminate call"); 1312 break; 1313 default: 1314 break; 1315 } 1316 break; 1317 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1318 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1319 hfp_ag_set_callsetup_indicator(); 1320 hfp_ag_set_call_indicator(); 1321 hfp_ag_trigger_terminate_call(); 1322 log_info("AG terminate call"); 1323 break; 1324 default: 1325 break; 1326 } 1327 break; 1328 case HFP_AG_CALL_DROPPED: 1329 switch (hfp_gsm_call_status()){ 1330 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1331 switch (hfp_gsm_callsetup_status()){ 1332 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1333 hfp_ag_stop_ringing(); 1334 log_info("Incoming call interrupted"); 1335 break; 1336 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1337 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1338 log_info("Outgoing call interrupted\n"); 1339 log_info("AG notify call dropped\n"); 1340 break; 1341 default: 1342 break; 1343 } 1344 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1345 hfp_ag_set_callsetup_indicator(); 1346 hfp_ag_transfer_callsetup_state(); 1347 hfp_ag_trigger_terminate_call(); 1348 break; 1349 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1350 if (hfp_ag_response_and_hold_active) { 1351 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1352 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1353 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1354 } 1355 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1356 hfp_ag_set_callsetup_indicator(); 1357 hfp_ag_set_call_indicator(); 1358 hfp_ag_trigger_terminate_call(); 1359 log_info("AG notify call dropped"); 1360 break; 1361 default: 1362 break; 1363 } 1364 break; 1365 1366 case HFP_AG_OUTGOING_CALL_INITIATED: 1367 // directly reject call if number of free slots is exceeded 1368 if (!hfp_gsm_call_possible()){ 1369 hfp_connection->send_error = 1; 1370 hfp_ag_run_for_context(hfp_connection); 1371 break; 1372 } 1373 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1374 1375 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1376 1377 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1378 break; 1379 1380 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1381 // directly reject call if number of free slots is exceeded 1382 if (!hfp_gsm_call_possible()){ 1383 hfp_connection->send_error = 1; 1384 hfp_ag_run_for_context(hfp_connection); 1385 break; 1386 } 1387 1388 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1389 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1390 1391 log_info("Redial last number"); 1392 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1393 1394 if (strlen(last_dialed_number) > 0){ 1395 log_info("Last number exists: accept call"); 1396 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1397 } else { 1398 log_info("log_infoLast number missing: reject call"); 1399 hfp_ag_handle_reject_incoming_call(); 1400 } 1401 break; 1402 } 1403 case HFP_AG_OUTGOING_CALL_REJECTED: 1404 hfp_ag_handle_reject_incoming_call(); 1405 break; 1406 1407 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1408 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1409 if (!hfp_connection){ 1410 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1411 break; 1412 } 1413 1414 hfp_connection->ok_pending = 1; 1415 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1416 1417 // trigger callsetup to be 1418 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1419 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1420 1421 hfp_ag_set_callsetup_indicator(); 1422 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1423 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1424 1425 // put current call on hold if active 1426 if (put_call_on_hold){ 1427 log_info("AG putting current call on hold for new outgoing calllog_info"); 1428 hfp_ag_set_callheld_indicator(); 1429 indicator_index = get_ag_indicator_index_for_name("callheld"); 1430 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1431 } 1432 1433 // start audio if needed 1434 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1435 break; 1436 } 1437 case HFP_AG_OUTGOING_CALL_RINGING: 1438 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1439 if (!hfp_connection){ 1440 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1441 break; 1442 } 1443 1444 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1445 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1446 hfp_ag_set_callsetup_indicator(); 1447 hfp_ag_transfer_callsetup_state(); 1448 break; 1449 1450 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1451 // get outgoing call 1452 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1453 if (!hfp_connection){ 1454 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1455 } 1456 if (!hfp_connection){ 1457 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1458 break; 1459 } 1460 1461 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1462 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1463 hfp_connection->call_state = HFP_CALL_ACTIVE; 1464 hfp_ag_set_callsetup_indicator(); 1465 hfp_ag_set_call_indicator(); 1466 hfp_ag_transfer_call_state(); 1467 hfp_ag_transfer_callsetup_state(); 1468 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1469 hfp_ag_set_callheld_indicator(); 1470 hfp_ag_transfer_callheld_state(); 1471 } 1472 break; 1473 } 1474 1475 case HFP_AG_CALL_HOLD_USER_BUSY: 1476 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1477 hfp_ag_set_callsetup_indicator(); 1478 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1479 hfp_connection->call_state = HFP_CALL_ACTIVE; 1480 log_info("AG: Call Waiting, User Busy"); 1481 break; 1482 1483 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1484 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1485 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1486 1487 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1488 if (call_held || call_setup_in_progress){ 1489 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1490 0, NULL); 1491 1492 } 1493 1494 if (call_setup_in_progress){ 1495 log_info("AG: Call Dropped, Accept new call"); 1496 hfp_ag_set_callsetup_indicator(); 1497 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1498 } else { 1499 log_info("AG: Call Dropped, Resume held call"); 1500 } 1501 if (call_held){ 1502 hfp_ag_set_callheld_indicator(); 1503 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1504 } 1505 1506 hfp_connection->call_state = HFP_CALL_ACTIVE; 1507 break; 1508 } 1509 1510 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1511 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1512 // only update if callsetup changed 1513 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1514 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1515 NULL); 1516 1517 if (call_setup_in_progress){ 1518 log_info("AG: Call on Hold, Accept new call"); 1519 hfp_ag_set_callsetup_indicator(); 1520 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1521 } else { 1522 log_info("AG: Swap calls"); 1523 } 1524 1525 hfp_ag_set_callheld_indicator(); 1526 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1527 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1528 hfp_connection->call_state = HFP_CALL_ACTIVE; 1529 break; 1530 } 1531 1532 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1533 // Adds a held call to the conversation. 1534 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1535 log_info("AG: Join 3-way-call"); 1536 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1537 hfp_ag_set_callheld_indicator(); 1538 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1539 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1540 } 1541 hfp_connection->call_state = HFP_CALL_ACTIVE; 1542 break; 1543 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1544 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1545 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1546 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1547 hfp_ag_set_call_indicator(); 1548 hfp_ag_set_callheld_indicator(); 1549 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1550 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1551 hfp_connection->call_state = HFP_CALL_IDLE; 1552 break; 1553 1554 default: 1555 break; 1556 } 1557 1558 1559 } 1560 1561 1562 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1563 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1564 if (!active_call) return; 1565 1566 int idx = active_call->index; 1567 hfp_enhanced_call_dir_t dir = active_call->direction; 1568 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1569 hfp_enhanced_call_mode_t mode = active_call->mode; 1570 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1571 uint8_t type = active_call->clip_type; 1572 char * number = active_call->clip_number; 1573 1574 char buffer[100]; 1575 // TODO: check length of a buffer, to fit the MTU 1576 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1577 if (number){ 1578 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1579 } 1580 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1581 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, 1582 mode, mpty, type, number); 1583 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1584 } 1585 1586 1587 // sends pending command, returns if command was sent 1588 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1589 1590 if (hfp_connection->send_status_of_current_calls){ 1591 hfp_connection->ok_pending = 0; 1592 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1593 hfp_connection->next_call_index++; 1594 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1595 return 1; 1596 } else { 1597 // 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 1598 hfp_connection->next_call_index = 0; 1599 hfp_connection->ok_pending = 1; 1600 hfp_connection->send_status_of_current_calls = 0; 1601 } 1602 } 1603 1604 if (hfp_connection->ag_notify_incoming_call_waiting){ 1605 hfp_connection->ag_notify_incoming_call_waiting = 0; 1606 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1607 return 1; 1608 } 1609 1610 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1611 hfp_connection->ok_pending = 0; 1612 hfp_connection->send_error = 0; 1613 hfp_connection->command = HFP_CMD_NONE; 1614 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1615 return 1; 1616 } 1617 1618 if (hfp_connection->send_error){ 1619 hfp_connection->send_error = 0; 1620 hfp_connection->command = HFP_CMD_NONE; 1621 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1622 return 1; 1623 } 1624 1625 // note: before update AG indicators and ok_pending 1626 if (hfp_connection->send_response_and_hold_status){ 1627 int status = hfp_connection->send_response_and_hold_status - 1; 1628 hfp_connection->send_response_and_hold_status = 0; 1629 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1630 return 1; 1631 } 1632 1633 if (hfp_connection->ok_pending){ 1634 hfp_connection->ok_pending = 0; 1635 hfp_connection->command = HFP_CMD_NONE; 1636 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1637 return 1; 1638 } 1639 1640 // update AG indicators 1641 if (hfp_connection->ag_indicators_status_update_bitmap){ 1642 int i; 1643 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1644 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1645 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1646 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1647 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1648 break; 1649 } 1650 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1651 return 1; 1652 } 1653 } 1654 } 1655 1656 if (hfp_connection->ag_ring){ 1657 hfp_connection->ag_ring = 0; 1658 hfp_connection->command = HFP_CMD_NONE; 1659 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1660 return 1; 1661 } 1662 1663 if (hfp_connection->ag_send_clip){ 1664 hfp_connection->ag_send_clip = 0; 1665 hfp_connection->command = HFP_CMD_NONE; 1666 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1667 return 1; 1668 } 1669 1670 if (hfp_connection->send_phone_number_for_voice_tag){ 1671 hfp_connection->send_phone_number_for_voice_tag = 0; 1672 hfp_connection->command = HFP_CMD_NONE; 1673 hfp_connection->ok_pending = 1; 1674 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1675 return 1; 1676 } 1677 1678 if (hfp_connection->send_subscriber_number){ 1679 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1680 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1681 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1682 } else { 1683 hfp_connection->send_subscriber_number = 0; 1684 hfp_connection->next_subscriber_number_to_send = 0; 1685 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1686 } 1687 hfp_connection->command = HFP_CMD_NONE; 1688 return 1; 1689 } 1690 1691 if (hfp_connection->send_microphone_gain){ 1692 hfp_connection->send_microphone_gain = 0; 1693 hfp_connection->command = HFP_CMD_NONE; 1694 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1695 return 1; 1696 } 1697 1698 if (hfp_connection->send_speaker_gain){ 1699 hfp_connection->send_speaker_gain = 0; 1700 hfp_connection->command = HFP_CMD_NONE; 1701 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1702 return 1; 1703 } 1704 1705 if (hfp_connection->send_ag_status_indicators){ 1706 hfp_connection->send_ag_status_indicators = 0; 1707 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1708 return 1; 1709 } 1710 1711 return 0; 1712 } 1713 1714 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1715 1716 btstack_assert(hfp_connection != NULL); 1717 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1718 1719 // during SDP query, RFCOMM CID is not set 1720 if (hfp_connection->rfcomm_cid == 0) return; 1721 1722 // assert command could be sent 1723 if (hci_can_send_command_packet_now() == 0) return; 1724 1725 #ifdef ENABLE_CC256X_ASSISTED_HFP 1726 // WBS Disassociate 1727 if (hfp_connection->cc256x_send_wbs_disassociate){ 1728 hfp_connection->cc256x_send_wbs_disassociate = false; 1729 hci_send_cmd(&hci_ti_wbs_disassociate); 1730 return; 1731 } 1732 // Write Codec Config 1733 if (hfp_connection->cc256x_send_write_codec_config){ 1734 hfp_connection->cc256x_send_write_codec_config = false; 1735 hfp_cc256x_write_codec_config(hfp_connection); 1736 return; 1737 } 1738 // WBS Associate 1739 if (hfp_connection->cc256x_send_wbs_associate){ 1740 hfp_connection->cc256x_send_wbs_associate = false; 1741 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 1742 return; 1743 } 1744 #endif 1745 #ifdef ENABLE_BCM_PCM_WBS 1746 // Enable WBS 1747 if (hfp_connection->bcm_send_enable_wbs){ 1748 hfp_connection->bcm_send_enable_wbs = false; 1749 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 1750 return; 1751 } 1752 // Write I2S/PCM params 1753 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 1754 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 1755 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 1756 return; 1757 } 1758 // Disable WBS 1759 if (hfp_connection->bcm_send_disable_wbs){ 1760 hfp_connection->bcm_send_disable_wbs = false; 1761 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 1762 return; 1763 } 1764 #endif 1765 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 1766 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 1767 hfp_finalize_connection_context(hfp_connection); 1768 return; 1769 } 1770 #endif 1771 1772 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1773 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1774 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1775 return; 1776 } 1777 1778 int cmd_sent = hfp_ag_send_commands(hfp_connection); 1779 1780 // trigger codec exchange if requested by app 1781 if (hfp_connection->trigger_codec_exchange){ 1782 log_info("trigger codec, command %u, codec state %u", hfp_connection->command, hfp_connection->codecs_state); 1783 } 1784 1785 if (hfp_connection->trigger_codec_exchange && (hfp_connection->command == HFP_CMD_NONE)){ 1786 switch (hfp_connection->codecs_state){ 1787 case HFP_CODECS_IDLE: 1788 case HFP_CODECS_RECEIVED_LIST: 1789 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1790 case HFP_CODECS_ERROR: 1791 hfp_connection->trigger_codec_exchange = 0; 1792 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1793 break; 1794 default: 1795 break; 1796 } 1797 } 1798 1799 if (!cmd_sent){ 1800 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1801 } 1802 1803 if (!cmd_sent){ 1804 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1805 } 1806 1807 if (!cmd_sent){ 1808 cmd_sent = call_setup_state_machine(hfp_connection); 1809 } 1810 1811 if (!cmd_sent){ 1812 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1813 } 1814 1815 if ((hfp_connection->command == HFP_CMD_NONE) && !cmd_sent){ 1816 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1817 switch(hfp_connection->state){ 1818 case HFP_W2_DISCONNECT_RFCOMM: 1819 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1820 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1821 break; 1822 default: 1823 break; 1824 } 1825 } 1826 1827 if (cmd_sent){ 1828 hfp_connection->command = HFP_CMD_NONE; 1829 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1830 } 1831 } 1832 1833 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1834 int i; 1835 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1836 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1837 if (indicator->uuid == number){ 1838 return indicator; 1839 } 1840 } 1841 return NULL; 1842 } 1843 1844 static int hfp_parser_is_end_of_line(uint8_t byte){ 1845 return (byte == '\n') || (byte == '\r'); 1846 } 1847 1848 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1849 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1850 1851 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1852 if (size < 1) return; 1853 1854 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1855 if (!hfp_connection) return; 1856 1857 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 1858 #ifdef ENABLE_HFP_AT_MESSAGES 1859 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1860 #endif 1861 1862 // process messages byte-wise 1863 int pos; 1864 for (pos = 0; pos < size ; pos++){ 1865 hfp_parse(hfp_connection, packet[pos], 0); 1866 1867 // parse until end of line 1868 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1869 1870 hfp_generic_status_indicator_t * indicator; 1871 switch(hfp_connection->command){ 1872 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1873 if (hfp_ag_response_and_hold_active){ 1874 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1875 } 1876 hfp_connection->ok_pending = 1; 1877 break; 1878 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1879 switch(hfp_connection->ag_response_and_hold_action){ 1880 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1881 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1882 break; 1883 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1884 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1885 break; 1886 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1887 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1888 break; 1889 default: 1890 break; 1891 } 1892 hfp_connection->ok_pending = 1; 1893 break; 1894 case HFP_CMD_HF_INDICATOR_STATUS: 1895 hfp_connection->command = HFP_CMD_NONE; 1896 // find indicator by assigned number 1897 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1898 if (!indicator){ 1899 hfp_connection->send_error = 1; 1900 break; 1901 } 1902 switch (indicator->uuid){ 1903 case 1: // enhanced security 1904 if (hfp_connection->parser_indicator_value > 1) { 1905 hfp_connection->send_error = 1; 1906 return; 1907 } 1908 log_info("HF Indicator 'enhanced security' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1909 break; 1910 case 2: // battery level 1911 if (hfp_connection->parser_indicator_value > 100){ 1912 hfp_connection->send_error = 1; 1913 return; 1914 } 1915 log_info("HF Indicator 'battery' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1916 break; 1917 default: 1918 log_info("HF Indicator unknown set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1919 break; 1920 } 1921 hfp_connection->ok_pending = 1; 1922 break; 1923 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1924 // expected by SLC state machine 1925 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1926 hfp_connection->send_ag_indicators_segment = 0; 1927 hfp_connection->send_ag_status_indicators = 1; 1928 break; 1929 case HFP_CMD_LIST_CURRENT_CALLS: 1930 hfp_connection->command = HFP_CMD_NONE; 1931 hfp_connection->next_call_index = 0; 1932 hfp_connection->send_status_of_current_calls = 1; 1933 break; 1934 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1935 if (subscriber_numbers_count == 0){ 1936 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1937 break; 1938 } 1939 hfp_connection->next_subscriber_number_to_send = 0; 1940 hfp_connection->send_subscriber_number = 1; 1941 break; 1942 case HFP_CMD_TRANSMIT_DTMF_CODES: 1943 { 1944 hfp_connection->command = HFP_CMD_NONE; 1945 char buffer[2]; 1946 buffer[0] = (char) hfp_connection->ag_dtmf_code; 1947 buffer[1] = 0; 1948 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 1949 break; 1950 } 1951 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1952 hfp_connection->command = HFP_CMD_NONE; 1953 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1954 break; 1955 case HFP_CMD_TURN_OFF_EC_AND_NR: 1956 hfp_connection->command = HFP_CMD_NONE; 1957 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1958 hfp_connection->ok_pending = 1; 1959 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1960 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1961 } else { 1962 hfp_connection->send_error = 1; 1963 } 1964 break; 1965 case HFP_CMD_CALL_ANSWERED: 1966 hfp_connection->command = HFP_CMD_NONE; 1967 log_info("HFP: ATA"); 1968 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1969 break; 1970 case HFP_CMD_HANG_UP_CALL: 1971 hfp_connection->command = HFP_CMD_NONE; 1972 hfp_connection->ok_pending = 1; 1973 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1974 break; 1975 case HFP_CMD_CALL_HOLD: { 1976 hfp_connection->command = HFP_CMD_NONE; 1977 hfp_connection->ok_pending = 1; 1978 1979 switch (hfp_connection->ag_call_hold_action){ 1980 case 0: 1981 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1982 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1983 break; 1984 case 1: 1985 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1986 // Where both a held and a waiting call exist, the above procedures shall apply to the 1987 // waiting call (i.e., not to the held call) in conflicting situation. 1988 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1989 break; 1990 case 2: 1991 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1992 // Where both a held and a waiting call exist, the above procedures shall apply to the 1993 // waiting call (i.e., not to the held call) in conflicting situation. 1994 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1995 break; 1996 case 3: 1997 // Adds a held call to the conversation. 1998 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1999 break; 2000 case 4: 2001 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2002 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2003 break; 2004 default: 2005 break; 2006 } 2007 hfp_connection->call_index = 0; 2008 break; 2009 } 2010 case HFP_CMD_CALL_PHONE_NUMBER: 2011 hfp_connection->command = HFP_CMD_NONE; 2012 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 2013 break; 2014 case HFP_CMD_REDIAL_LAST_NUMBER: 2015 hfp_connection->command = HFP_CMD_NONE; 2016 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2017 break; 2018 case HFP_CMD_ENABLE_CLIP: 2019 hfp_connection->command = HFP_CMD_NONE; 2020 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2021 hfp_connection->ok_pending = 1; 2022 break; 2023 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2024 hfp_connection->command = HFP_CMD_NONE; 2025 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2026 hfp_connection->ok_pending = 1; 2027 break; 2028 case HFP_CMD_SET_SPEAKER_GAIN: 2029 hfp_connection->command = HFP_CMD_NONE; 2030 hfp_connection->ok_pending = 1; 2031 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2032 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2033 break; 2034 case HFP_CMD_SET_MICROPHONE_GAIN: 2035 hfp_connection->command = HFP_CMD_NONE; 2036 hfp_connection->ok_pending = 1; 2037 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2038 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->speaker_gain); 2039 break; 2040 default: 2041 break; 2042 } 2043 } 2044 } 2045 2046 static void hfp_ag_run(void){ 2047 btstack_linked_list_iterator_t it; 2048 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2049 while (btstack_linked_list_iterator_has_next(&it)){ 2050 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2051 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2052 hfp_ag_run_for_context(hfp_connection); 2053 } 2054 } 2055 2056 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2057 switch (packet_type){ 2058 case RFCOMM_DATA_PACKET: 2059 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 2060 break; 2061 case HCI_EVENT_PACKET: 2062 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2063 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2064 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2065 return; 2066 } 2067 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2068 break; 2069 default: 2070 break; 2071 } 2072 2073 hfp_ag_run(); 2074 } 2075 2076 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2077 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2078 hfp_ag_run(); 2079 } 2080 2081 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2082 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2083 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2084 return; 2085 } 2086 int i; 2087 hfp_codecs_nr = codecs_nr; 2088 for (i=0; i < codecs_nr; i++){ 2089 hfp_codecs[i] = codecs[i]; 2090 } 2091 } 2092 2093 void hfp_ag_init_supported_features(uint32_t supported_features){ 2094 hfp_supported_features = supported_features; 2095 } 2096 2097 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2098 hfp_ag_indicators_nr = ag_indicators_nr; 2099 (void)memcpy(hfp_ag_indicators, ag_indicators, 2100 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2101 } 2102 2103 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2104 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2105 hfp_generic_status_indicators_nr = hf_indicators_nr; 2106 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2107 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2108 } 2109 2110 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2111 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2112 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2113 call_hold_services_nr * sizeof(char *)); 2114 } 2115 2116 2117 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2118 2119 hfp_init(); 2120 hfp_ag_call_hold_services_nr = 0; 2121 hfp_ag_response_and_hold_active = 0; 2122 hfp_ag_indicators_nr = 0; 2123 hfp_codecs_nr = 0; 2124 hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2125 subscriber_numbers = NULL; 2126 subscriber_numbers_count = 0; 2127 2128 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2129 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2130 2131 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2132 2133 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2134 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2135 2136 hfp_gsm_init(); 2137 } 2138 2139 void hfp_ag_deinit(void){ 2140 hfp_deinit(); 2141 hfp_gsm_deinit(); 2142 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2143 (void) memset(&hfp_ag_callback, 0, sizeof(btstack_packet_handler_t)); 2144 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2145 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2146 } 2147 2148 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2149 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2150 } 2151 2152 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2153 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2154 if (!hfp_connection){ 2155 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2156 return; 2157 } 2158 hfp_release_service_level_connection(hfp_connection); 2159 hfp_ag_run_for_context(hfp_connection); 2160 } 2161 2162 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2163 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2164 if (!hfp_connection){ 2165 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2166 return; 2167 } 2168 hfp_connection->extended_audio_gateway_error = 0; 2169 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2170 return; 2171 } 2172 hfp_connection->extended_audio_gateway_error = error; 2173 hfp_ag_run_for_context(hfp_connection); 2174 } 2175 2176 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2177 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2178 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2179 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2180 2181 hfp_connection->establish_audio_connection = 1; 2182 if (!has_codec_negotiation_feature(hfp_connection)){ 2183 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2184 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2185 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2186 // now, pick link settings 2187 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2188 #ifdef ENABLE_CC256X_ASSISTED_HFP 2189 hfp_cc256x_prepare_for_sco(hfp_connection); 2190 #endif 2191 return; 2192 } 2193 2194 hfp_connection->trigger_codec_exchange = 1; 2195 } 2196 2197 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2198 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2199 if (!hfp_connection){ 2200 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2201 return; 2202 } 2203 hfp_connection->trigger_codec_exchange = 0; 2204 hfp_connection->establish_audio_connection = 0; 2205 hfp_ag_setup_audio_connection(hfp_connection); 2206 hfp_ag_run_for_context(hfp_connection); 2207 } 2208 2209 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2210 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2211 if (!hfp_connection){ 2212 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2213 return; 2214 } 2215 hfp_release_audio_connection(hfp_connection); 2216 hfp_ag_run_for_context(hfp_connection); 2217 } 2218 2219 /** 2220 * @brief Enable in-band ring tone 2221 */ 2222 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2223 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2224 return; 2225 } 2226 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2227 2228 btstack_linked_list_iterator_t it; 2229 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2230 while (btstack_linked_list_iterator_has_next(&it)){ 2231 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2232 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2233 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2234 hfp_ag_run_for_context(hfp_connection); 2235 } 2236 } 2237 2238 /** 2239 * @brief Called from GSM 2240 */ 2241 void hfp_ag_incoming_call(void){ 2242 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2243 } 2244 2245 /** 2246 * @brief number is stored. 2247 */ 2248 void hfp_ag_set_clip(uint8_t type, const char * number){ 2249 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2250 } 2251 2252 void hfp_ag_call_dropped(void){ 2253 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2254 } 2255 2256 // call from AG UI 2257 void hfp_ag_answer_incoming_call(void){ 2258 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2259 } 2260 2261 void hfp_ag_join_held_call(void){ 2262 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2263 } 2264 2265 void hfp_ag_terminate_call(void){ 2266 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2267 } 2268 2269 void hfp_ag_outgoing_call_ringing(void){ 2270 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2271 } 2272 2273 void hfp_ag_outgoing_call_established(void){ 2274 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2275 } 2276 2277 void hfp_ag_outgoing_call_rejected(void){ 2278 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2279 } 2280 2281 void hfp_ag_outgoing_call_accepted(void){ 2282 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2283 } 2284 2285 void hfp_ag_hold_incoming_call(void){ 2286 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2287 } 2288 2289 void hfp_ag_accept_held_incoming_call(void) { 2290 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2291 } 2292 2293 void hfp_ag_reject_held_incoming_call(void){ 2294 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2295 } 2296 2297 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2298 int indicator_index = get_ag_indicator_index_for_name(name); 2299 if (indicator_index < 0) return; 2300 hfp_ag_indicators[indicator_index].status = value; 2301 2302 2303 btstack_linked_list_iterator_t it; 2304 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2305 while (btstack_linked_list_iterator_has_next(&it)){ 2306 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2307 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2308 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2309 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2310 continue; 2311 } 2312 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2313 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2314 hfp_ag_run_for_context(hfp_connection); 2315 } 2316 } 2317 2318 void hfp_ag_set_registration_status(int status){ 2319 hfp_ag_set_ag_indicator("service", status); 2320 } 2321 2322 void hfp_ag_set_signal_strength(int strength){ 2323 hfp_ag_set_ag_indicator("signal", strength); 2324 } 2325 2326 void hfp_ag_set_roaming_status(int status){ 2327 hfp_ag_set_ag_indicator("roam", status); 2328 } 2329 2330 void hfp_ag_set_battery_level(int level){ 2331 hfp_ag_set_ag_indicator("battchg", level); 2332 } 2333 2334 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2335 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2336 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2337 if (!hfp_connection){ 2338 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2339 return; 2340 } 2341 2342 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2343 log_info("AG cannot acivate voice recognition - not supported by HF"); 2344 return; 2345 } 2346 2347 if (activate){ 2348 hfp_ag_establish_audio_connection(acl_handle); 2349 } 2350 2351 hfp_connection->ag_activate_voice_recognition = activate; 2352 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2353 hfp_ag_run_for_context(hfp_connection); 2354 } 2355 2356 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2357 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2358 if (!hfp_connection){ 2359 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2360 return; 2361 } 2362 if (hfp_connection->microphone_gain != gain){ 2363 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2364 hfp_connection->microphone_gain = gain; 2365 hfp_connection->send_microphone_gain = 1; 2366 } 2367 hfp_ag_run_for_context(hfp_connection); 2368 } 2369 2370 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2371 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2372 if (!hfp_connection){ 2373 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2374 return; 2375 } 2376 if (hfp_connection->speaker_gain != gain){ 2377 hfp_connection->speaker_gain = gain; 2378 hfp_connection->send_speaker_gain = 1; 2379 } 2380 hfp_ag_run_for_context(hfp_connection); 2381 } 2382 2383 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2384 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2385 if (!hfp_connection){ 2386 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2387 return; 2388 } 2389 hfp_ag_set_clip(0, number); 2390 hfp_connection->send_phone_number_for_voice_tag = 1; 2391 } 2392 2393 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2394 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2395 if (!hfp_connection){ 2396 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2397 return; 2398 } 2399 hfp_connection->send_error = 1; 2400 } 2401 2402 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2403 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2404 if (!hfp_connection){ 2405 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2406 return; 2407 } 2408 hfp_connection->ok_pending = 1; 2409 } 2410 2411 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2412 subscriber_numbers = numbers; 2413 subscriber_numbers_count = numbers_count; 2414 } 2415 2416 void hfp_ag_clear_last_dialed_number(void){ 2417 hfp_gsm_clear_last_dialed_number(); 2418 } 2419 2420 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2421 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2422 if (!hfp_connection){ 2423 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2424 return; 2425 } 2426 if (!hfp_connection->call_waiting_notification_enabled) return; 2427 2428 hfp_connection->ag_notify_incoming_call_waiting = 1; 2429 hfp_ag_run_for_context(hfp_connection); 2430 } 2431 2432 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){ 2433 if (!name){ 2434 name = default_hfp_ag_service_name; 2435 } 2436 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2437 2438 /* 2439 * 0x01 – Ability to reject a call 2440 * 0x00 – No ability to reject a call 2441 */ 2442 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2443 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2444 2445 // Construct SupportedFeatures for SDP bitmap: 2446 // 2447 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2448 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2449 // 2450 // Wide band speech (bit 5) requires Codec negotiation 2451 // 2452 uint16_t sdp_features = supported_features & 0x1f; 2453 if (wide_band_speech && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2454 sdp_features |= 1 << 5; 2455 } 2456 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2457 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2458 } 2459 2460 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2461 if (callback == NULL){ 2462 log_error("hfp_ag_register_packet_handler called with NULL callback"); 2463 return; 2464 } 2465 hfp_ag_callback = callback; 2466 hfp_set_ag_callback(callback); 2467 } 2468