1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define __BTSTACK_FILE__ "hfp_ag.c" 39 40 // ***************************************************************************** 41 // 42 // HFP Audio Gateway (AG) unit 43 // 44 // ***************************************************************************** 45 46 #include "btstack_config.h" 47 48 #include <stdint.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 53 #include "hci_cmd.h" 54 #include "btstack_run_loop.h" 55 56 #include "bluetooth_sdp.h" 57 #include "hci.h" 58 #include "btstack_memory.h" 59 #include "hci_dump.h" 60 #include "l2cap.h" 61 #include "btstack_debug.h" 62 #include "btstack_event.h" 63 #include "classic/core.h" 64 #include "classic/hfp.h" 65 #include "classic/hfp_ag.h" 66 #include "classic/hfp_gsm_model.h" 67 #include "classic/sdp_client_rfcomm.h" 68 #include "classic/sdp_server.h" 69 #include "classic/sdp_util.h" 70 71 // private prototypes 72 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection); 73 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection); 74 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 75 76 // public prototypes 77 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 78 int get_hfp_generic_status_indicators_nr(void); 79 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 80 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 81 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 82 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 83 84 static btstack_packet_callback_registration_t hci_event_callback_registration; 85 86 // gobals 87 static const char default_hfp_ag_service_name[] = "Voice gateway"; 88 89 static uint16_t hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 90 91 static uint8_t hfp_codecs_nr = 0; 92 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 93 94 static int hfp_ag_indicators_nr = 0; 95 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_AG_INDICATORS]; 96 97 static int hfp_generic_status_indicators_nr = 0; 98 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_HF_INDICATORS]; 99 100 static int hfp_ag_call_hold_services_nr = 0; 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 = 0; 106 107 // Subcriber information entries 108 static hfp_phone_number_t * subscriber_numbers = NULL; 109 static int subscriber_numbers_count = 0; 110 111 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection); 112 113 114 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 115 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 116 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 117 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 118 } 119 return hfp_connection->ag_indicators_nr; 120 } 121 122 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 123 // TODO: save only value, and value changed in the hfp_connection? 124 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 125 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 126 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 127 } 128 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 129 } 130 131 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 132 int i; 133 for (i = 0; i < hfp_ag_indicators_nr; i++){ 134 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 135 return &hfp_ag_indicators[i]; 136 } 137 } 138 return NULL; 139 } 140 141 static int get_ag_indicator_index_for_name(const char * name){ 142 int i; 143 for (i = 0; i < hfp_ag_indicators_nr; i++){ 144 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 145 return i; 146 } 147 } 148 return -1; 149 } 150 151 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 152 btstack_linked_list_iterator_t it; 153 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 154 while (btstack_linked_list_iterator_has_next(&it)){ 155 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 156 if (hfp_connection->acl_handle != handle) continue; 157 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 158 return hfp_connection; 159 } 160 return NULL; 161 } 162 163 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 164 if (callback == NULL){ 165 log_error("hfp_ag_register_packet_handler called with NULL callback"); 166 return; 167 } 168 hfp_ag_callback = callback; 169 hfp_set_ag_callback(callback); 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 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){ 195 if (!name){ 196 name = default_hfp_ag_service_name; 197 } 198 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 199 200 /* 201 * 0x01 – Ability to reject a call 202 * 0x00 – No ability to reject a call 203 */ 204 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 205 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 206 207 // Construct SupportedFeatures for SDP bitmap: 208 // 209 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 210 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 211 // 212 // Wide band speech (bit 5) requires Codec negotiation 213 // 214 uint16_t sdp_features = supported_features & 0x1f; 215 if (wide_band_speech && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 216 sdp_features |= 1 << 5; 217 } 218 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 219 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 220 } 221 222 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 223 char buffer[20]; 224 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 225 return send_str_over_rfcomm(cid, buffer); 226 } 227 228 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 229 char buffer[40]; 230 sprintf(buffer, "\r\n%s:%d\r\n\r\nOK\r\n", HFP_SUPPORTED_FEATURES, hfp_supported_features); 231 return send_str_over_rfcomm(cid, buffer); 232 } 233 234 static int hfp_ag_send_ok(uint16_t cid){ 235 char buffer[10]; 236 sprintf(buffer, "\r\nOK\r\n"); 237 return send_str_over_rfcomm(cid, buffer); 238 } 239 240 static int hfp_ag_send_ring(uint16_t cid){ 241 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 242 } 243 244 static int hfp_ag_send_clip(uint16_t cid){ 245 char buffer[50]; 246 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 247 return send_str_over_rfcomm(cid, buffer); 248 } 249 250 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 251 char buffer[50]; 252 sprintf(buffer, "\r\n%s: ,\"%s\",%u, , \r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 253 return send_str_over_rfcomm(cid, buffer); 254 } 255 256 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 257 char buffer[50]; 258 sprintf(buffer, "\r\n%s: %s\r\n", HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 259 return send_str_over_rfcomm(cid, buffer); 260 } 261 262 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 263 char buffer[50]; 264 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 265 return send_str_over_rfcomm(cid, buffer); 266 } 267 268 static int hfp_ag_send_error(uint16_t cid){ 269 char buffer[10]; 270 sprintf(buffer, "\r\nERROR\r\n"); 271 return send_str_over_rfcomm(cid, buffer); 272 } 273 274 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 275 char buffer[20]; 276 sprintf(buffer, "\r\n%s=%d\r\n", HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 277 return send_str_over_rfcomm(cid, buffer); 278 } 279 280 // get size for indicator string 281 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 282 // template: ("$NAME",($MIN,$MAX)) 283 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 284 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 285 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 286 } 287 288 // store indicator 289 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer){ 290 sprintf((char *) buffer, "(\"%s\",(%d,%d)),", 291 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 292 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 293 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 294 } 295 296 // structure: header [indicator [comma indicator]] footer 297 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 298 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 299 if (!num_indicators) return 2; 300 return 3 + (num_indicators-1) * 2; 301 } 302 303 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 304 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 305 if (index == 0) { 306 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 307 } 308 index--; 309 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 310 int indicator_index = index >> 1; 311 if ((index & 1) == 0){ 312 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 313 } 314 if (indicator_index == num_indicators - 1){ 315 return 8; // "\r\n\r\nOK\r\n" 316 } 317 return 1; // comma 318 } 319 320 static void hgp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer){ 321 if (index == 0){ 322 *buffer++ = '\r'; 323 *buffer++ = '\n'; 324 int len = strlen(HFP_INDICATOR); 325 memcpy(buffer, HFP_INDICATOR, len); 326 buffer += len; 327 *buffer++ = ':'; 328 return; 329 } 330 index--; 331 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 332 int indicator_index = index >> 1; 333 if ((index & 1) == 0){ 334 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer); 335 return; 336 } 337 if (indicator_index == num_indicators-1){ 338 memcpy(buffer, "\r\n\r\nOK\r\n", 8); 339 return; 340 } 341 *buffer = ','; 342 } 343 344 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 345 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 346 int i; 347 int offset = 0; 348 for (i = 0; i < hfp_generic_status_indicators_nr-1; i++) { 349 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 350 } 351 if (i < hfp_generic_status_indicators_nr){ 352 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 353 } 354 return offset; 355 } 356 357 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 358 if (buffer_size < hfp_generic_status_indicators_nr * 3) return 0; 359 int i; 360 int offset = 0; 361 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 362 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); 363 } 364 return offset; 365 } 366 367 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 368 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 369 int i; 370 int offset = 0; 371 for (i = 0; i < hfp_ag_indicators_nr-1; i++) { 372 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 373 } 374 if (i<hfp_ag_indicators_nr){ 375 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 376 } 377 return offset; 378 } 379 380 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 381 if (buffer_size < hfp_ag_call_hold_services_nr * 3) return 0; 382 int i; 383 int offset = snprintf(buffer, buffer_size, "("); 384 for (i = 0; i < hfp_ag_call_hold_services_nr-1; i++) { 385 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 386 } 387 if (i<hfp_ag_call_hold_services_nr){ 388 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 389 } 390 return offset; 391 } 392 393 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 394 int start_segment, int num_segments, 395 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 396 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer)){ 397 398 // assumes: can send now == true 399 // assumes: num segments > 0 400 // assumes: individual segments are smaller than MTU 401 rfcomm_reserve_packet_buffer(); 402 int mtu = rfcomm_get_max_frame_size(cid); 403 uint8_t * data = rfcomm_get_outgoing_buffer(); 404 int offset = 0; 405 int segment = start_segment; 406 while (segment < num_segments){ 407 int segment_len = get_segment_len(hfp_connection, segment); 408 if (offset + segment_len > mtu) break; 409 // append segement 410 store_segment(hfp_connection, segment, data+offset); 411 offset += segment_len; 412 segment++; 413 } 414 rfcomm_send_prepared(cid, offset); 415 return segment; 416 } 417 418 // returns next segment to store 419 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 420 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 421 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 422 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 423 } 424 425 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 426 char buffer[40]; 427 const int size = sizeof(buffer); 428 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 429 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 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_can_hold_call_cmd(uint16_t cid){ 435 char buffer[40]; 436 const int size = sizeof(buffer); 437 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 438 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 439 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 440 return send_str_over_rfcomm(cid, buffer); 441 } 442 443 444 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 445 return hfp_ag_send_ok(cid); 446 } 447 448 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 449 char buffer[40]; 450 const int size = sizeof(buffer); 451 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 452 offset += hfp_hf_indicators_join(buffer+offset, size-offset-10); 453 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 454 return send_str_over_rfcomm(cid, buffer); 455 } 456 457 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 458 char buffer[40]; 459 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 460 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 461 return send_str_over_rfcomm(cid, buffer); 462 } 463 464 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 465 char buffer[20]; 466 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 467 return send_str_over_rfcomm(cid, buffer); 468 } 469 470 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 471 char buffer[41]; 472 if (strlen(op.name) == 0){ 473 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 474 } else { 475 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 476 offset += snprintf(buffer+offset, 16, "%s", op.name); 477 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 478 } 479 return send_str_over_rfcomm(cid, buffer); 480 } 481 482 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 483 char buffer[30]; 484 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 485 return send_str_over_rfcomm(cid, buffer); 486 } 487 488 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 489 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 490 } 491 492 static int hfp_ag_send_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 493 return hfp_ag_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 494 } 495 496 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 497 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 498 } 499 500 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 501 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 502 } 503 504 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 505 return hfp_ag_send_cmd_with_int(cid, HFP_RESPONSE_AND_HOLD, state); 506 } 507 508 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 509 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 510 511 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 512 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 513 return HFP_CODEC_MSBC; 514 } 515 } 516 return HFP_CODEC_CVSD; 517 } 518 519 static void hfp_init_link_settings(hfp_connection_t * hfp_connection){ 520 // determine highest possible link setting 521 hfp_connection->link_setting = HFP_LINK_SETTINGS_D1; 522 // anything else requires eSCO support on both sides 523 if (hci_extended_sco_link_supported() && hci_remote_esco_supported(hfp_connection->acl_handle)){ 524 switch (hfp_connection->negotiated_codec){ 525 case HFP_CODEC_CVSD: 526 hfp_connection->link_setting = HFP_LINK_SETTINGS_S3; 527 if ((hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) 528 && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4))){ 529 hfp_connection->link_setting = HFP_LINK_SETTINGS_S4; 530 } 531 break; 532 case HFP_CODEC_MSBC: 533 hfp_connection->link_setting = HFP_LINK_SETTINGS_T2; 534 break; 535 default: 536 break; 537 } 538 } 539 log_info("hfp_init_link_settings: %u", hfp_connection->link_setting); 540 } 541 542 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 543 /* events ( == commands): 544 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 545 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 546 hf_trigger_codec_connection_setup == received BCC 547 ag_trigger_codec_connection_setup == received from AG to send BCS 548 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 549 */ 550 551 switch (hfp_connection->codecs_state){ 552 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 553 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 554 break; 555 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 556 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 557 break; 558 default: 559 break; 560 } 561 562 // printf(" -> State machine: CC\n"); 563 564 switch (hfp_connection->command){ 565 case HFP_CMD_AVAILABLE_CODECS: 566 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 567 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 568 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 569 return 1; 570 } 571 572 switch (hfp_connection->codecs_state){ 573 case HFP_CODECS_AG_SENT_COMMON_CODEC: 574 case HFP_CODECS_EXCHANGED: 575 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 576 break; 577 default: 578 break; 579 } 580 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 581 return 1; 582 583 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 584 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 585 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 586 return 1; 587 588 case HFP_CMD_AG_SEND_COMMON_CODEC: 589 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 590 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 591 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 592 return 1; 593 594 case HFP_CMD_HF_CONFIRMED_CODEC: 595 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 596 hfp_connection->codecs_state = HFP_CODECS_ERROR; 597 hfp_ag_send_error(hfp_connection->rfcomm_cid); 598 return 1; 599 } 600 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 601 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 602 log_info("hfp: codec confirmed: %s", hfp_connection->negotiated_codec == HFP_CODEC_MSBC ? "mSBC" : "CVSD"); 603 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 604 // now, pick link settings 605 hfp_init_link_settings(hfp_connection); 606 return 1; 607 default: 608 break; 609 } 610 return 0; 611 } 612 613 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 614 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 615 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 616 617 // if active call exist, set per-hfp_connection state active, too (when audio is on) 618 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 619 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 620 } 621 // if AG is ringing, also start ringing on the HF 622 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS && 623 hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 624 hfp_ag_hf_start_ringing(hfp_connection); 625 } 626 } 627 628 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 629 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 630 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 631 int sent = 0; 632 switch(hfp_connection->command){ 633 case HFP_CMD_SUPPORTED_FEATURES: 634 switch(hfp_connection->state){ 635 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 636 case HFP_EXCHANGE_SUPPORTED_FEATURES: 637 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 638 if (has_codec_negotiation_feature(hfp_connection)){ 639 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 640 } else { 641 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 642 } 643 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 644 return 1; 645 default: 646 break; 647 } 648 break; 649 case HFP_CMD_AVAILABLE_CODECS: 650 sent = codecs_exchange_state_machine(hfp_connection); 651 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 652 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 653 } 654 return sent; 655 656 case HFP_CMD_RETRIEVE_AG_INDICATORS: 657 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 658 // HF requested AG Indicators and we did expect it 659 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 660 // continue below in state switch 661 } 662 break; 663 664 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 665 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 666 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 667 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 668 return 1; 669 670 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 671 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 672 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 673 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 674 } else if (has_hf_indicators_feature(hfp_connection)){ 675 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 676 } else { 677 hfp_ag_slc_established(hfp_connection); 678 } 679 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 680 return 1; 681 682 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 683 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 684 if (has_hf_indicators_feature(hfp_connection)){ 685 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 686 } 687 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 688 if (!has_hf_indicators_feature(hfp_connection)){ 689 hfp_ag_slc_established(hfp_connection); 690 } 691 return 1; 692 693 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 694 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 695 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 696 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 697 return 1; 698 699 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 700 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 701 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 702 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 703 return 1; 704 705 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 706 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 707 hfp_ag_slc_established(hfp_connection); 708 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 709 return 1; 710 default: 711 break; 712 } 713 714 switch (hfp_connection->state){ 715 case HFP_RETRIEVE_INDICATORS: { 716 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 717 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 718 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 719 if (next_segment < num_segments){ 720 // prepare sending of next segment 721 hfp_connection->send_ag_indicators_segment = next_segment; 722 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 723 } else { 724 // done, go to next state 725 hfp_connection->send_ag_indicators_segment = 0; 726 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 727 } 728 return 1; 729 } 730 default: 731 break; 732 } 733 return 0; 734 } 735 736 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 737 int sent = codecs_exchange_state_machine(hfp_connection); 738 if (sent) return 1; 739 740 switch(hfp_connection->command){ 741 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 742 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 743 hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 744 return 1; 745 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 746 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 747 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 748 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 749 hfp_ag_setup_audio_connection(hfp_connection); 750 } else { 751 hfp_ag_send_error(hfp_connection->rfcomm_cid); 752 } 753 return 1; 754 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 755 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 756 return 1; 757 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 758 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 759 return 1; 760 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 761 if (hfp_connection->network_operator.format != 0){ 762 hfp_ag_send_error(hfp_connection->rfcomm_cid); 763 } else { 764 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 765 } 766 return 1; 767 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 768 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 769 return 1; 770 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 771 if (hfp_connection->extended_audio_gateway_error){ 772 hfp_connection->extended_audio_gateway_error = 0; 773 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 774 return 1; 775 } 776 break; 777 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 778 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 779 return 1; 780 default: 781 break; 782 } 783 return 0; 784 } 785 786 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 787 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 788 hfp_connection->state > HFP_W2_DISCONNECT_SCO) return 0; 789 790 791 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->release_audio_connection){ 792 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 793 hfp_connection->release_audio_connection = 0; 794 gap_disconnect(hfp_connection->sco_handle); 795 return 1; 796 } 797 798 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 799 800 // run codecs exchange 801 int sent = codecs_exchange_state_machine(hfp_connection); 802 if (sent) return 1; 803 804 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 805 if (hfp_connection->establish_audio_connection){ 806 hfp_connection->state = HFP_W4_SCO_CONNECTED; 807 hfp_connection->establish_audio_connection = 0; 808 hfp_setup_synchronous_connection(hfp_connection); 809 return 1; 810 } 811 return 0; 812 } 813 814 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 815 btstack_linked_list_iterator_t it; 816 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 817 818 while (btstack_linked_list_iterator_has_next(&it)){ 819 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 820 if ( & hfp_connection->hfp_timeout == ts) { 821 return hfp_connection; 822 } 823 } 824 return NULL; 825 } 826 827 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 828 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 829 if (!hfp_connection) return; 830 831 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 832 hfp_connection->ag_ring = 1; 833 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 834 835 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 836 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 837 838 hfp_ag_run_for_context(hfp_connection); 839 } 840 841 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 842 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 843 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 844 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 845 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 846 } 847 848 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 849 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 850 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 851 } 852 853 // 854 // transitition implementations for hfp_ag_call_state_machine 855 // 856 857 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 858 if (use_in_band_tone()){ 859 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 860 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 861 } else { 862 hfp_timeout_start(hfp_connection); 863 hfp_connection->ag_ring = 1; 864 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 865 hfp_connection->call_state = HFP_CALL_RINGING; 866 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 867 } 868 } 869 870 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 871 hfp_connection->ag_ring = 0; 872 hfp_connection->ag_send_clip = 0; 873 hfp_timeout_stop(hfp_connection); 874 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 875 } 876 877 static void hfp_ag_trigger_incoming_call(void){ 878 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 879 if (indicator_index < 0) return; 880 881 btstack_linked_list_iterator_t it; 882 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 883 while (btstack_linked_list_iterator_has_next(&it)){ 884 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 885 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 886 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 887 if (hfp_connection->call_state == HFP_CALL_IDLE){ 888 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 889 hfp_ag_hf_start_ringing(hfp_connection); 890 } 891 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 892 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 893 } 894 hfp_ag_run_for_context(hfp_connection); 895 } 896 } 897 898 static void hfp_ag_transfer_callsetup_state(void){ 899 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 900 if (indicator_index < 0) return; 901 902 btstack_linked_list_iterator_t it; 903 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 904 while (btstack_linked_list_iterator_has_next(&it)){ 905 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 906 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 907 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 908 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 909 hfp_ag_run_for_context(hfp_connection); 910 } 911 } 912 913 static void hfp_ag_transfer_call_state(void){ 914 int indicator_index = get_ag_indicator_index_for_name("call"); 915 if (indicator_index < 0) return; 916 917 btstack_linked_list_iterator_t it; 918 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 919 while (btstack_linked_list_iterator_has_next(&it)){ 920 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 921 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 922 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 923 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 924 hfp_ag_run_for_context(hfp_connection); 925 } 926 } 927 928 static void hfp_ag_transfer_callheld_state(void){ 929 int indicator_index = get_ag_indicator_index_for_name("callheld"); 930 if (indicator_index < 0) return; 931 932 btstack_linked_list_iterator_t it; 933 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 934 while (btstack_linked_list_iterator_has_next(&it)){ 935 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 936 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 937 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 938 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 939 hfp_ag_run_for_context(hfp_connection); 940 } 941 } 942 943 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 944 945 int call_indicator_index = get_ag_indicator_index_for_name("call"); 946 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 947 948 btstack_linked_list_iterator_t it; 949 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 950 while (btstack_linked_list_iterator_has_next(&it)){ 951 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 952 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 953 if (hfp_connection->call_state != HFP_CALL_RINGING && 954 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 955 956 hfp_ag_hf_stop_ringing(hfp_connection); 957 if (hfp_connection == source){ 958 hfp_connection->ok_pending = 1; 959 960 if (use_in_band_tone()){ 961 hfp_connection->call_state = HFP_CALL_ACTIVE; 962 } else { 963 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 964 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 965 } 966 967 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 968 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 969 970 } else { 971 hfp_connection->call_state = HFP_CALL_IDLE; 972 } 973 hfp_ag_run_for_context(hfp_connection); 974 } 975 } 976 977 static void hfp_ag_ag_accept_call(void){ 978 979 int call_indicator_index = get_ag_indicator_index_for_name("call"); 980 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 981 982 btstack_linked_list_iterator_t it; 983 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 984 while (btstack_linked_list_iterator_has_next(&it)){ 985 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 986 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 987 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 988 989 hfp_ag_hf_stop_ringing(hfp_connection); 990 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 991 992 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 993 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 994 995 hfp_ag_run_for_context(hfp_connection); 996 break; // only single 997 } 998 } 999 1000 static void hfp_ag_trigger_reject_call(void){ 1001 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1002 btstack_linked_list_iterator_t it; 1003 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1004 while (btstack_linked_list_iterator_has_next(&it)){ 1005 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1006 if (connection->local_role != HFP_ROLE_AG) continue; 1007 if (connection->call_state != HFP_CALL_RINGING && 1008 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1009 hfp_ag_hf_stop_ringing(connection); 1010 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1011 connection->call_state = HFP_CALL_IDLE; 1012 hfp_ag_run_for_context(connection); 1013 } 1014 } 1015 1016 static void hfp_ag_emit_simple_event(uint8_t event_subtype){ 1017 uint8_t event[3]; 1018 event[0] = HCI_EVENT_HFP_META; 1019 event[1] = sizeof(event) - 2; 1020 event[2] = event_subtype; 1021 if (!hfp_ag_callback) return; 1022 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1023 } 1024 1025 static void hfp_ag_trigger_terminate_call(void){ 1026 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1027 1028 btstack_linked_list_iterator_t it; 1029 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1030 while (btstack_linked_list_iterator_has_next(&it)){ 1031 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1032 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1033 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1034 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1035 hfp_connection->call_state = HFP_CALL_IDLE; 1036 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1037 hfp_connection->release_audio_connection = 1; 1038 hfp_ag_run_for_context(hfp_connection); 1039 } 1040 hfp_ag_emit_simple_event(HFP_SUBEVENT_CALL_TERMINATED); 1041 } 1042 1043 static void hfp_ag_set_callsetup_indicator(void){ 1044 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1045 if (!indicator){ 1046 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1047 return; 1048 }; 1049 indicator->status = hfp_gsm_callsetup_status(); 1050 } 1051 1052 static void hfp_ag_set_callheld_indicator(void){ 1053 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1054 if (!indicator){ 1055 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1056 return; 1057 }; 1058 indicator->status = hfp_gsm_callheld_status(); 1059 } 1060 1061 static void hfp_ag_set_call_indicator(void){ 1062 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1063 if (!indicator){ 1064 log_error("hfp_ag_set_call_state: call indicator is missing"); 1065 return; 1066 }; 1067 indicator->status = hfp_gsm_call_status(); 1068 } 1069 1070 static void hfp_ag_stop_ringing(void){ 1071 btstack_linked_list_iterator_t it; 1072 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1073 while (btstack_linked_list_iterator_has_next(&it)){ 1074 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1075 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1076 if (hfp_connection->call_state != HFP_CALL_RINGING && 1077 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1078 hfp_ag_hf_stop_ringing(hfp_connection); 1079 } 1080 } 1081 1082 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1083 btstack_linked_list_iterator_t it; 1084 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1085 while (btstack_linked_list_iterator_has_next(&it)){ 1086 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1087 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1088 if (hfp_connection->call_state == call_state) return hfp_connection; 1089 } 1090 return NULL; 1091 } 1092 1093 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1094 btstack_linked_list_iterator_t it; 1095 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1096 while (btstack_linked_list_iterator_has_next(&it)){ 1097 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1098 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1099 hfp_connection->send_response_and_hold_status = state + 1; 1100 } 1101 } 1102 1103 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1104 int indicator_index; 1105 switch (hfp_connection->call_state){ 1106 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1107 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1108 // we got event: audio hfp_connection established 1109 hfp_timeout_start(hfp_connection); 1110 hfp_connection->ag_ring = 1; 1111 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1112 hfp_connection->call_state = HFP_CALL_RINGING; 1113 hfp_connection->call_state = HFP_CALL_RINGING; 1114 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1115 break; 1116 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1117 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1118 // we got event: audio hfp_connection established 1119 hfp_connection->call_state = HFP_CALL_ACTIVE; 1120 break; 1121 case HFP_CALL_W2_SEND_CALL_WAITING: 1122 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1123 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1124 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1125 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1126 break; 1127 default: 1128 break; 1129 } 1130 return 0; 1131 } 1132 // hfp_connection is used to identify originating HF 1133 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1134 int indicator_index; 1135 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1136 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1137 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1138 1139 //printf("hfp_ag_call_sm event %d \n", event); 1140 switch (event){ 1141 case HFP_AG_INCOMING_CALL: 1142 switch (hfp_gsm_call_status()){ 1143 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1144 switch (hfp_gsm_callsetup_status()){ 1145 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1146 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1147 hfp_ag_set_callsetup_indicator(); 1148 hfp_ag_trigger_incoming_call(); 1149 log_info("AG rings"); 1150 break; 1151 default: 1152 break; 1153 } 1154 break; 1155 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1156 switch (hfp_gsm_callsetup_status()){ 1157 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1158 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1159 hfp_ag_set_callsetup_indicator(); 1160 hfp_ag_trigger_incoming_call(); 1161 log_info("AG call waiting"); 1162 break; 1163 default: 1164 break; 1165 } 1166 break; 1167 } 1168 break; 1169 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1170 switch (hfp_gsm_call_status()){ 1171 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1172 switch (hfp_gsm_callsetup_status()){ 1173 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1174 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1175 hfp_ag_set_call_indicator(); 1176 hfp_ag_set_callsetup_indicator(); 1177 hfp_ag_ag_accept_call(); 1178 log_info("AG answers call, accept call by GSM"); 1179 break; 1180 default: 1181 break; 1182 } 1183 break; 1184 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1185 switch (hfp_gsm_callsetup_status()){ 1186 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1187 log_info("AG: current call is placed on hold, incoming call gets active"); 1188 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1189 hfp_ag_set_callsetup_indicator(); 1190 hfp_ag_set_callheld_indicator(); 1191 hfp_ag_transfer_callsetup_state(); 1192 hfp_ag_transfer_callheld_state(); 1193 break; 1194 default: 1195 break; 1196 } 1197 break; 1198 } 1199 break; 1200 1201 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1202 switch (hfp_gsm_call_status()){ 1203 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1204 switch (hfp_gsm_callheld_status()){ 1205 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1206 log_info("AG: joining held call with active call"); 1207 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1208 hfp_ag_set_callheld_indicator(); 1209 hfp_ag_transfer_callheld_state(); 1210 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1211 break; 1212 default: 1213 break; 1214 } 1215 break; 1216 default: 1217 break; 1218 } 1219 break; 1220 1221 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1222 switch (hfp_gsm_call_status()){ 1223 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1224 switch (hfp_gsm_callsetup_status()){ 1225 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1226 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1227 hfp_ag_set_callsetup_indicator(); 1228 hfp_ag_set_call_indicator(); 1229 hfp_ag_hf_accept_call(hfp_connection); 1230 log_info("HF answers call, accept call by GSM"); 1231 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1232 break; 1233 default: 1234 break; 1235 } 1236 break; 1237 default: 1238 break; 1239 } 1240 break; 1241 1242 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1243 switch (hfp_gsm_call_status()){ 1244 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1245 switch (hfp_gsm_callsetup_status()){ 1246 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1247 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1248 hfp_ag_response_and_hold_active = 1; 1249 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1250 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1251 // as with regualr call 1252 hfp_ag_set_call_indicator(); 1253 hfp_ag_set_callsetup_indicator(); 1254 hfp_ag_ag_accept_call(); 1255 log_info("AG response and hold - hold by AG"); 1256 break; 1257 default: 1258 break; 1259 } 1260 break; 1261 default: 1262 break; 1263 } 1264 break; 1265 1266 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1267 switch (hfp_gsm_call_status()){ 1268 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1269 switch (hfp_gsm_callsetup_status()){ 1270 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1271 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1272 hfp_ag_response_and_hold_active = 1; 1273 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1274 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1275 // as with regualr call 1276 hfp_ag_set_call_indicator(); 1277 hfp_ag_set_callsetup_indicator(); 1278 hfp_ag_hf_accept_call(hfp_connection); 1279 log_info("AG response and hold - hold by HF"); 1280 break; 1281 default: 1282 break; 1283 } 1284 break; 1285 default: 1286 break; 1287 } 1288 break; 1289 1290 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1291 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1292 if (!hfp_ag_response_and_hold_active) break; 1293 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1294 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1295 hfp_ag_response_and_hold_active = 0; 1296 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1297 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1298 log_info("Held Call accepted and active"); 1299 break; 1300 1301 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1302 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1303 if (!hfp_ag_response_and_hold_active) break; 1304 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1305 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1306 hfp_ag_response_and_hold_active = 0; 1307 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1308 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1309 // from terminate by ag 1310 hfp_ag_set_call_indicator(); 1311 hfp_ag_trigger_terminate_call(); 1312 break; 1313 1314 case HFP_AG_TERMINATE_CALL_BY_HF: 1315 switch (hfp_gsm_call_status()){ 1316 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1317 switch (hfp_gsm_callsetup_status()){ 1318 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1319 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1320 hfp_ag_set_callsetup_indicator(); 1321 hfp_ag_transfer_callsetup_state(); 1322 hfp_ag_trigger_reject_call(); 1323 log_info("HF Rejected Incoming call, AG terminate call"); 1324 break; 1325 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1326 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1327 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1328 hfp_ag_set_callsetup_indicator(); 1329 hfp_ag_transfer_callsetup_state(); 1330 log_info("AG terminate outgoing call process"); 1331 break; 1332 default: 1333 break; 1334 } 1335 break; 1336 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1337 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1338 hfp_ag_set_call_indicator(); 1339 hfp_ag_transfer_call_state(); 1340 hfp_connection->call_state = HFP_CALL_IDLE; 1341 log_info("AG terminate call"); 1342 break; 1343 } 1344 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1345 break; 1346 1347 case HFP_AG_TERMINATE_CALL_BY_AG: 1348 switch (hfp_gsm_call_status()){ 1349 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1350 switch (hfp_gsm_callsetup_status()){ 1351 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1352 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1353 hfp_ag_set_callsetup_indicator(); 1354 hfp_ag_trigger_reject_call(); 1355 log_info("AG Rejected Incoming call, AG terminate call"); 1356 break; 1357 default: 1358 break; 1359 } 1360 break; 1361 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1362 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1363 hfp_ag_set_callsetup_indicator(); 1364 hfp_ag_set_call_indicator(); 1365 hfp_ag_trigger_terminate_call(); 1366 log_info("AG terminate call"); 1367 break; 1368 default: 1369 break; 1370 } 1371 break; 1372 case HFP_AG_CALL_DROPPED: 1373 switch (hfp_gsm_call_status()){ 1374 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1375 switch (hfp_gsm_callsetup_status()){ 1376 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1377 hfp_ag_stop_ringing(); 1378 log_info("Incoming call interrupted"); 1379 break; 1380 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1381 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1382 log_info("Outgoing call interrupted\n"); 1383 log_info("AG notify call dropped\n"); 1384 break; 1385 default: 1386 break; 1387 } 1388 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1389 hfp_ag_set_callsetup_indicator(); 1390 hfp_ag_transfer_callsetup_state(); 1391 break; 1392 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1393 if (hfp_ag_response_and_hold_active) { 1394 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1395 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1396 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1397 } 1398 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1399 hfp_ag_set_callsetup_indicator(); 1400 hfp_ag_set_call_indicator(); 1401 hfp_ag_trigger_terminate_call(); 1402 log_info("AG notify call dropped"); 1403 break; 1404 default: 1405 break; 1406 } 1407 break; 1408 1409 case HFP_AG_OUTGOING_CALL_INITIATED: 1410 // directly reject call if number of free slots is exceeded 1411 if (!hfp_gsm_call_possible()){ 1412 hfp_connection->send_error = 1; 1413 hfp_ag_run_for_context(hfp_connection); 1414 break; 1415 } 1416 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1417 1418 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1419 1420 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1421 break; 1422 1423 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1424 // directly reject call if number of free slots is exceeded 1425 if (!hfp_gsm_call_possible()){ 1426 hfp_connection->send_error = 1; 1427 hfp_ag_run_for_context(hfp_connection); 1428 break; 1429 } 1430 1431 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1432 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1433 1434 log_info("Redial last number"); 1435 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1436 1437 if (strlen(last_dialed_number) > 0){ 1438 log_info("Last number exists: accept call"); 1439 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1440 } else { 1441 log_info("log_infoLast number missing: reject call"); 1442 hfp_ag_outgoing_call_rejected(); 1443 } 1444 break; 1445 } 1446 case HFP_AG_OUTGOING_CALL_REJECTED: 1447 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1448 if (!hfp_connection){ 1449 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1450 break; 1451 } 1452 1453 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1454 hfp_connection->call_state = HFP_CALL_IDLE; 1455 hfp_connection->send_error = 1; 1456 hfp_ag_run_for_context(hfp_connection); 1457 break; 1458 1459 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1460 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1461 if (!hfp_connection){ 1462 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1463 break; 1464 } 1465 1466 hfp_connection->ok_pending = 1; 1467 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1468 1469 // trigger callsetup to be 1470 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1471 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1472 1473 hfp_ag_set_callsetup_indicator(); 1474 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1475 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1476 1477 // put current call on hold if active 1478 if (put_call_on_hold){ 1479 log_info("AG putting current call on hold for new outgoing calllog_info"); 1480 hfp_ag_set_callheld_indicator(); 1481 indicator_index = get_ag_indicator_index_for_name("callheld"); 1482 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1483 } 1484 1485 // start audio if needed 1486 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1487 break; 1488 } 1489 case HFP_AG_OUTGOING_CALL_RINGING: 1490 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1491 if (!hfp_connection){ 1492 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1493 break; 1494 } 1495 1496 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1497 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1498 hfp_ag_set_callsetup_indicator(); 1499 hfp_ag_transfer_callsetup_state(); 1500 break; 1501 1502 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1503 // get outgoing call 1504 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1505 if (!hfp_connection){ 1506 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1507 } 1508 if (!hfp_connection){ 1509 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1510 break; 1511 } 1512 1513 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1514 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1515 hfp_connection->call_state = HFP_CALL_ACTIVE; 1516 hfp_ag_set_callsetup_indicator(); 1517 hfp_ag_set_call_indicator(); 1518 hfp_ag_transfer_call_state(); 1519 hfp_ag_transfer_callsetup_state(); 1520 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1521 hfp_ag_set_callheld_indicator(); 1522 hfp_ag_transfer_callheld_state(); 1523 } 1524 break; 1525 } 1526 1527 case HFP_AG_CALL_HOLD_USER_BUSY: 1528 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1529 hfp_ag_set_callsetup_indicator(); 1530 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1531 hfp_connection->call_state = HFP_CALL_ACTIVE; 1532 log_info("AG: Call Waiting, User Busy"); 1533 break; 1534 1535 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1536 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1537 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1538 1539 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1540 if (call_held || call_setup_in_progress){ 1541 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1542 1543 } 1544 1545 if (call_setup_in_progress){ 1546 log_info("AG: Call Dropped, Accept new call"); 1547 hfp_ag_set_callsetup_indicator(); 1548 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1549 } else { 1550 log_info("AG: Call Dropped, Resume held call"); 1551 } 1552 if (call_held){ 1553 hfp_ag_set_callheld_indicator(); 1554 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1555 } 1556 1557 hfp_connection->call_state = HFP_CALL_ACTIVE; 1558 break; 1559 } 1560 1561 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1562 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1563 // only update if callsetup changed 1564 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1565 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1566 1567 if (call_setup_in_progress){ 1568 log_info("AG: Call on Hold, Accept new call"); 1569 hfp_ag_set_callsetup_indicator(); 1570 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1571 } else { 1572 log_info("AG: Swap calls"); 1573 } 1574 1575 hfp_ag_set_callheld_indicator(); 1576 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1577 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1578 hfp_connection->call_state = HFP_CALL_ACTIVE; 1579 break; 1580 } 1581 1582 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1583 // Adds a held call to the conversation. 1584 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1585 log_info("AG: Join 3-way-call"); 1586 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1587 hfp_ag_set_callheld_indicator(); 1588 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1589 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1590 } 1591 hfp_connection->call_state = HFP_CALL_ACTIVE; 1592 break; 1593 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1594 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1595 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1596 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1597 hfp_ag_set_call_indicator(); 1598 hfp_ag_set_callheld_indicator(); 1599 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1600 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1601 hfp_connection->call_state = HFP_CALL_IDLE; 1602 break; 1603 1604 default: 1605 break; 1606 } 1607 1608 1609 } 1610 1611 1612 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1613 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1614 if (!active_call) return; 1615 1616 int idx = active_call->index; 1617 hfp_enhanced_call_dir_t dir = active_call->direction; 1618 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1619 hfp_enhanced_call_mode_t mode = active_call->mode; 1620 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1621 uint8_t type = active_call->clip_type; 1622 char * number = active_call->clip_number; 1623 1624 char buffer[100]; 1625 // TODO: check length of a buffer, to fit the MTU 1626 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1627 if (number){ 1628 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1629 } 1630 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1631 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, 1632 mode, mpty, type, number); 1633 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1634 } 1635 1636 1637 // sends pending command, returns if command was sent 1638 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1639 1640 if (hfp_connection->send_status_of_current_calls){ 1641 hfp_connection->ok_pending = 0; 1642 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1643 hfp_connection->next_call_index++; 1644 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1645 return 1; 1646 } else { 1647 // 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 1648 hfp_connection->next_call_index = 0; 1649 hfp_connection->ok_pending = 1; 1650 hfp_connection->send_status_of_current_calls = 0; 1651 } 1652 } 1653 1654 if (hfp_connection->ag_notify_incoming_call_waiting){ 1655 hfp_connection->ag_notify_incoming_call_waiting = 0; 1656 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1657 return 1; 1658 } 1659 1660 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1661 hfp_connection->ok_pending = 0; 1662 hfp_connection->send_error = 0; 1663 hfp_connection->command = HFP_CMD_NONE; 1664 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1665 return 1; 1666 } 1667 1668 if (hfp_connection->send_error){ 1669 hfp_connection->send_error = 0; 1670 hfp_connection->command = HFP_CMD_NONE; 1671 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1672 return 1; 1673 } 1674 1675 // note: before update AG indicators and ok_pending 1676 if (hfp_connection->send_response_and_hold_status){ 1677 int status = hfp_connection->send_response_and_hold_status - 1; 1678 hfp_connection->send_response_and_hold_status = 0; 1679 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1680 return 1; 1681 } 1682 1683 if (hfp_connection->ok_pending){ 1684 hfp_connection->ok_pending = 0; 1685 hfp_connection->command = HFP_CMD_NONE; 1686 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1687 return 1; 1688 } 1689 1690 // update AG indicators 1691 if (hfp_connection->ag_indicators_status_update_bitmap){ 1692 int i; 1693 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1694 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1695 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1696 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1697 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1698 break; 1699 } 1700 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1701 return 1; 1702 } 1703 } 1704 } 1705 1706 if (hfp_connection->ag_ring){ 1707 hfp_connection->ag_ring = 0; 1708 hfp_connection->command = HFP_CMD_NONE; 1709 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1710 return 1; 1711 } 1712 1713 if (hfp_connection->ag_send_clip){ 1714 hfp_connection->ag_send_clip = 0; 1715 hfp_connection->command = HFP_CMD_NONE; 1716 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1717 return 1; 1718 } 1719 1720 if (hfp_connection->send_phone_number_for_voice_tag){ 1721 hfp_connection->send_phone_number_for_voice_tag = 0; 1722 hfp_connection->command = HFP_CMD_NONE; 1723 hfp_connection->ok_pending = 1; 1724 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1725 return 1; 1726 } 1727 1728 if (hfp_connection->send_subscriber_number){ 1729 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1730 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1731 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1732 } else { 1733 hfp_connection->send_subscriber_number = 0; 1734 hfp_connection->next_subscriber_number_to_send = 0; 1735 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1736 } 1737 hfp_connection->command = HFP_CMD_NONE; 1738 return 1; 1739 } 1740 1741 if (hfp_connection->send_microphone_gain){ 1742 hfp_connection->send_microphone_gain = 0; 1743 hfp_connection->command = HFP_CMD_NONE; 1744 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1745 return 1; 1746 } 1747 1748 if (hfp_connection->send_speaker_gain){ 1749 hfp_connection->send_speaker_gain = 0; 1750 hfp_connection->command = HFP_CMD_NONE; 1751 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1752 return 1; 1753 } 1754 1755 if (hfp_connection->send_ag_status_indicators){ 1756 hfp_connection->send_ag_status_indicators = 0; 1757 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1758 return 1; 1759 } 1760 1761 return 0; 1762 } 1763 1764 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1765 1766 if (!hfp_connection) return; 1767 1768 if (!hfp_connection->rfcomm_cid) return; 1769 1770 if (hfp_connection->local_role != HFP_ROLE_AG) { 1771 log_info("HFP AG%p, wrong role %u", hfp_connection, hfp_connection->local_role); 1772 return; 1773 } 1774 1775 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1776 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1777 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1778 return; 1779 } 1780 1781 int cmd_sent = hfp_ag_send_commands(hfp_connection); 1782 1783 // trigger codec exchange if requested by app 1784 if (hfp_connection->trigger_codec_exchange){ 1785 log_info("trigger codec, command %u, codec state %u", hfp_connection->command, hfp_connection->codecs_state); 1786 } 1787 1788 if (hfp_connection->trigger_codec_exchange && hfp_connection->command == HFP_CMD_NONE){ 1789 switch (hfp_connection->codecs_state){ 1790 case HFP_CODECS_IDLE: 1791 case HFP_CODECS_RECEIVED_LIST: 1792 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1793 case HFP_CODECS_ERROR: 1794 hfp_connection->trigger_codec_exchange = 0; 1795 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1796 break; 1797 default: 1798 break; 1799 } 1800 } 1801 1802 if (!cmd_sent){ 1803 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1804 } 1805 1806 if (!cmd_sent){ 1807 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1808 } 1809 1810 if (!cmd_sent){ 1811 cmd_sent = call_setup_state_machine(hfp_connection); 1812 } 1813 1814 if (!cmd_sent){ 1815 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1816 } 1817 1818 if (hfp_connection->command == HFP_CMD_NONE && !cmd_sent){ 1819 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1820 switch(hfp_connection->state){ 1821 case HFP_W2_DISCONNECT_RFCOMM: 1822 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1823 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1824 break; 1825 default: 1826 break; 1827 } 1828 } 1829 1830 if (cmd_sent){ 1831 hfp_connection->command = HFP_CMD_NONE; 1832 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1833 } 1834 } 1835 1836 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1837 int i; 1838 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1839 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1840 if (indicator->uuid == number){ 1841 return indicator; 1842 } 1843 } 1844 return NULL; 1845 } 1846 1847 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1848 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1849 1850 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1851 if (size < 1) return; 1852 1853 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1854 if (!hfp_connection) return; 1855 1856 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 1857 1858 // process messages byte-wise 1859 int pos; 1860 for (pos = 0; pos < size ; pos++){ 1861 hfp_parse(hfp_connection, packet[pos], 0); 1862 } 1863 1864 int value; 1865 hfp_generic_status_indicator_t * indicator; 1866 switch(hfp_connection->command){ 1867 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1868 if (hfp_ag_response_and_hold_active){ 1869 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1870 } 1871 hfp_connection->ok_pending = 1; 1872 break; 1873 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1874 value = btstack_atoi((char *)&hfp_connection->line_buffer[0]); 1875 log_info("HF Response and Hold: %u", value); 1876 switch(value){ 1877 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1878 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1879 break; 1880 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1881 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1882 break; 1883 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1884 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1885 break; 1886 default: 1887 break; 1888 } 1889 hfp_connection->ok_pending = 1; 1890 break; 1891 case HFP_CMD_HF_INDICATOR_STATUS: 1892 hfp_connection->command = HFP_CMD_NONE; 1893 // find indicator by assigned number 1894 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1895 if (!indicator){ 1896 hfp_connection->send_error = 1; 1897 break; 1898 } 1899 value = btstack_atoi((char *)&hfp_connection->line_buffer[0]); 1900 switch (indicator->uuid){ 1901 case 1: // enhanced security 1902 if (value > 1) { 1903 hfp_connection->send_error = 1; 1904 return; 1905 } 1906 log_info("HF Indicator 'enhanced security' set to %u", value); 1907 break; 1908 case 2: // battery level 1909 if (value > 100){ 1910 hfp_connection->send_error = 1; 1911 return; 1912 } 1913 log_info("HF Indicator 'battery' set to %u", value); 1914 break; 1915 default: 1916 log_info("HF Indicator unknown set to %u", value); 1917 break; 1918 } 1919 hfp_connection->ok_pending = 1; 1920 break; 1921 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1922 // expected by SLC state machine 1923 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1924 hfp_connection->send_ag_indicators_segment = 0; 1925 hfp_connection->send_ag_status_indicators = 1; 1926 break; 1927 case HFP_CMD_LIST_CURRENT_CALLS: 1928 hfp_connection->command = HFP_CMD_NONE; 1929 hfp_connection->next_call_index = 0; 1930 hfp_connection->send_status_of_current_calls = 1; 1931 break; 1932 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1933 if (subscriber_numbers_count == 0){ 1934 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1935 break; 1936 } 1937 hfp_connection->next_subscriber_number_to_send = 0; 1938 hfp_connection->send_subscriber_number = 1; 1939 break; 1940 case HFP_CMD_TRANSMIT_DTMF_CODES: 1941 hfp_connection->command = HFP_CMD_NONE; 1942 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &hfp_connection->line_buffer[0]); 1943 break; 1944 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1945 hfp_connection->command = HFP_CMD_NONE; 1946 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1947 break; 1948 case HFP_CMD_TURN_OFF_EC_AND_NR: 1949 hfp_connection->command = HFP_CMD_NONE; 1950 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1951 hfp_connection->ok_pending = 1; 1952 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1953 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1954 } else { 1955 hfp_connection->send_error = 1; 1956 } 1957 break; 1958 case HFP_CMD_CALL_ANSWERED: 1959 hfp_connection->command = HFP_CMD_NONE; 1960 log_info("HFP: ATA"); 1961 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1962 break; 1963 case HFP_CMD_HANG_UP_CALL: 1964 hfp_connection->command = HFP_CMD_NONE; 1965 hfp_connection->ok_pending = 1; 1966 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1967 break; 1968 case HFP_CMD_CALL_HOLD: { 1969 // TODO: fully implement this 1970 log_error("HFP: unhandled call hold type %c", hfp_connection->line_buffer[0]); 1971 hfp_connection->command = HFP_CMD_NONE; 1972 hfp_connection->ok_pending = 1; 1973 hfp_connection->call_index = 0; 1974 1975 if (hfp_connection->line_buffer[1] != '\0'){ 1976 hfp_connection->call_index = btstack_atoi((char *)&hfp_connection->line_buffer[1]); 1977 } 1978 1979 switch (hfp_connection->line_buffer[0]){ 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 break; 2008 } 2009 case HFP_CMD_CALL_PHONE_NUMBER: 2010 hfp_connection->command = HFP_CMD_NONE; 2011 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 2012 break; 2013 case HFP_CMD_REDIAL_LAST_NUMBER: 2014 hfp_connection->command = HFP_CMD_NONE; 2015 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2016 break; 2017 case HFP_CMD_ENABLE_CLIP: 2018 hfp_connection->command = HFP_CMD_NONE; 2019 hfp_connection->clip_enabled = hfp_connection->line_buffer[8] != '0'; 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 hfp_connection->call_waiting_notification_enabled = hfp_connection->line_buffer[8] != '0'; 2026 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2027 hfp_connection->ok_pending = 1; 2028 break; 2029 case HFP_CMD_SET_SPEAKER_GAIN: 2030 hfp_connection->command = HFP_CMD_NONE; 2031 hfp_connection->ok_pending = 1; 2032 log_info("HF speaker gain = %u", 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 break; 2039 default: 2040 break; 2041 } 2042 } 2043 2044 static void hfp_run(void){ 2045 btstack_linked_list_iterator_t it; 2046 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2047 while (btstack_linked_list_iterator_has_next(&it)){ 2048 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2049 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2050 hfp_ag_run_for_context(hfp_connection); 2051 } 2052 } 2053 2054 static void rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2055 switch (packet_type){ 2056 case RFCOMM_DATA_PACKET: 2057 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 2058 break; 2059 case HCI_EVENT_PACKET: 2060 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2061 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2062 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2063 return; 2064 } 2065 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2066 break; 2067 default: 2068 break; 2069 } 2070 2071 hfp_run(); 2072 } 2073 2074 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2075 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2076 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2077 return; 2078 } 2079 int i; 2080 hfp_codecs_nr = codecs_nr; 2081 for (i=0; i < codecs_nr; i++){ 2082 hfp_codecs[i] = codecs[i]; 2083 } 2084 } 2085 2086 void hfp_ag_init_supported_features(uint32_t supported_features){ 2087 hfp_supported_features = supported_features; 2088 } 2089 2090 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2091 hfp_ag_indicators_nr = ag_indicators_nr; 2092 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2093 } 2094 2095 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2096 if (hf_indicators_nr > HFP_MAX_NUM_HF_INDICATORS) return; 2097 hfp_generic_status_indicators_nr = hf_indicators_nr; 2098 memcpy(hfp_generic_status_indicators, hf_indicators, hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2099 } 2100 2101 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2102 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2103 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2104 } 2105 2106 2107 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2108 2109 hfp_init(); 2110 2111 hci_event_callback_registration.callback = &hfp_handle_hci_event; 2112 hci_add_event_handler(&hci_event_callback_registration); 2113 2114 rfcomm_register_service(&rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2115 2116 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2117 hfp_set_ag_rfcomm_packet_handler(&rfcomm_packet_handler); 2118 2119 hfp_ag_response_and_hold_active = 0; 2120 subscriber_numbers = NULL; 2121 subscriber_numbers_count = 0; 2122 2123 hfp_gsm_init(); 2124 } 2125 2126 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2127 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2128 } 2129 2130 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2131 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2132 if (!hfp_connection){ 2133 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2134 return; 2135 } 2136 hfp_release_service_level_connection(hfp_connection); 2137 hfp_ag_run_for_context(hfp_connection); 2138 } 2139 2140 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2141 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2142 if (!hfp_connection){ 2143 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2144 return; 2145 } 2146 hfp_connection->extended_audio_gateway_error = 0; 2147 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2148 return; 2149 } 2150 hfp_connection->extended_audio_gateway_error = error; 2151 hfp_ag_run_for_context(hfp_connection); 2152 } 2153 2154 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2155 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2156 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2157 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2158 2159 hfp_connection->establish_audio_connection = 1; 2160 if (!has_codec_negotiation_feature(hfp_connection)){ 2161 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2162 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2163 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2164 // now, pick link settings 2165 hfp_init_link_settings(hfp_connection); 2166 return; 2167 } 2168 2169 hfp_connection->trigger_codec_exchange = 1; 2170 } 2171 2172 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2173 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2174 if (!hfp_connection){ 2175 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2176 return; 2177 } 2178 hfp_connection->trigger_codec_exchange = 0; 2179 hfp_connection->establish_audio_connection = 0; 2180 hfp_ag_setup_audio_connection(hfp_connection); 2181 hfp_ag_run_for_context(hfp_connection); 2182 } 2183 2184 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2185 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2186 if (!hfp_connection){ 2187 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2188 return; 2189 } 2190 hfp_release_audio_connection(hfp_connection); 2191 hfp_ag_run_for_context(hfp_connection); 2192 } 2193 2194 /** 2195 * @brief Enable in-band ring tone 2196 */ 2197 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2198 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2199 return; 2200 } 2201 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2202 2203 btstack_linked_list_iterator_t it; 2204 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2205 while (btstack_linked_list_iterator_has_next(&it)){ 2206 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2207 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2208 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2209 hfp_ag_run_for_context(hfp_connection); 2210 } 2211 } 2212 2213 /** 2214 * @brief Called from GSM 2215 */ 2216 void hfp_ag_incoming_call(void){ 2217 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2218 } 2219 2220 /** 2221 * @brief number is stored. 2222 */ 2223 void hfp_ag_set_clip(uint8_t type, const char * number){ 2224 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2225 } 2226 2227 void hfp_ag_call_dropped(void){ 2228 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2229 } 2230 2231 // call from AG UI 2232 void hfp_ag_answer_incoming_call(void){ 2233 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2234 } 2235 2236 void hfp_ag_join_held_call(void){ 2237 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2238 } 2239 2240 void hfp_ag_terminate_call(void){ 2241 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2242 } 2243 2244 void hfp_ag_outgoing_call_ringing(void){ 2245 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2246 } 2247 2248 void hfp_ag_outgoing_call_established(void){ 2249 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2250 } 2251 2252 void hfp_ag_outgoing_call_rejected(void){ 2253 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2254 } 2255 2256 void hfp_ag_outgoing_call_accepted(void){ 2257 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2258 } 2259 2260 void hfp_ag_hold_incoming_call(void){ 2261 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2262 } 2263 2264 void hfp_ag_accept_held_incoming_call(void) { 2265 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2266 } 2267 2268 void hfp_ag_reject_held_incoming_call(void){ 2269 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2270 } 2271 2272 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2273 int indicator_index = get_ag_indicator_index_for_name(name); 2274 if (indicator_index < 0) return; 2275 hfp_ag_indicators[indicator_index].status = value; 2276 2277 2278 btstack_linked_list_iterator_t it; 2279 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2280 while (btstack_linked_list_iterator_has_next(&it)){ 2281 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2282 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2283 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2284 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2285 continue; 2286 } 2287 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2288 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2289 hfp_ag_run_for_context(hfp_connection); 2290 } 2291 } 2292 2293 void hfp_ag_set_registration_status(int status){ 2294 hfp_ag_set_ag_indicator("service", status); 2295 } 2296 2297 void hfp_ag_set_signal_strength(int strength){ 2298 hfp_ag_set_ag_indicator("signal", strength); 2299 } 2300 2301 void hfp_ag_set_roaming_status(int status){ 2302 hfp_ag_set_ag_indicator("roam", status); 2303 } 2304 2305 void hfp_ag_set_battery_level(int level){ 2306 hfp_ag_set_ag_indicator("battchg", level); 2307 } 2308 2309 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2310 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2311 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2312 if (!hfp_connection){ 2313 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2314 return; 2315 } 2316 2317 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2318 log_info("AG cannot acivate voice recognition - not supported by HF"); 2319 return; 2320 } 2321 2322 if (activate){ 2323 hfp_ag_establish_audio_connection(acl_handle); 2324 } 2325 2326 hfp_connection->ag_activate_voice_recognition = activate; 2327 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2328 hfp_ag_run_for_context(hfp_connection); 2329 } 2330 2331 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2332 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2333 if (!hfp_connection){ 2334 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2335 return; 2336 } 2337 if (hfp_connection->microphone_gain != gain){ 2338 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2339 hfp_connection->microphone_gain = gain; 2340 hfp_connection->send_microphone_gain = 1; 2341 } 2342 hfp_ag_run_for_context(hfp_connection); 2343 } 2344 2345 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2346 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2347 if (!hfp_connection){ 2348 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2349 return; 2350 } 2351 if (hfp_connection->speaker_gain != gain){ 2352 hfp_connection->speaker_gain = gain; 2353 hfp_connection->send_speaker_gain = 1; 2354 } 2355 hfp_ag_run_for_context(hfp_connection); 2356 } 2357 2358 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2359 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2360 if (!hfp_connection){ 2361 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2362 return; 2363 } 2364 hfp_ag_set_clip(0, number); 2365 hfp_connection->send_phone_number_for_voice_tag = 1; 2366 } 2367 2368 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2369 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2370 if (!hfp_connection){ 2371 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2372 return; 2373 } 2374 hfp_connection->send_error = 1; 2375 } 2376 2377 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2378 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2379 if (!hfp_connection){ 2380 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2381 return; 2382 } 2383 hfp_connection->ok_pending = 1; 2384 } 2385 2386 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2387 subscriber_numbers = numbers; 2388 subscriber_numbers_count = numbers_count; 2389 } 2390 2391 void hfp_ag_clear_last_dialed_number(void){ 2392 hfp_gsm_clear_last_dialed_number(); 2393 } 2394 2395 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2396 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2397 if (!hfp_connection){ 2398 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2399 return; 2400 } 2401 if (!hfp_connection->call_waiting_notification_enabled) return; 2402 2403 hfp_connection->ag_notify_incoming_call_waiting = 1; 2404 hfp_ag_run_for_context(hfp_connection); 2405 } 2406 2407