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_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 // gobals 85 static const char default_hfp_ag_service_name[] = "Voice gateway"; 86 87 static uint16_t hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 88 89 static uint8_t hfp_codecs_nr = 0; 90 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 91 92 static int hfp_ag_indicators_nr = 0; 93 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_AG_INDICATORS]; 94 95 static int hfp_generic_status_indicators_nr = 0; 96 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_HF_INDICATORS]; 97 98 static int hfp_ag_call_hold_services_nr = 0; 99 static char *hfp_ag_call_hold_services[6]; 100 static btstack_packet_handler_t hfp_ag_callback; 101 102 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 103 static int hfp_ag_response_and_hold_active = 0; 104 105 // Subcriber information entries 106 static hfp_phone_number_t * subscriber_numbers = NULL; 107 static int subscriber_numbers_count = 0; 108 109 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection); 110 111 112 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 113 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 114 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 115 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 116 } 117 return hfp_connection->ag_indicators_nr; 118 } 119 120 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 121 // TODO: save only value, and value changed in the hfp_connection? 122 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 123 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 124 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 125 } 126 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 127 } 128 129 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 130 int i; 131 for (i = 0; i < hfp_ag_indicators_nr; i++){ 132 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 133 return &hfp_ag_indicators[i]; 134 } 135 } 136 return NULL; 137 } 138 139 static int get_ag_indicator_index_for_name(const char * name){ 140 int i; 141 for (i = 0; i < hfp_ag_indicators_nr; i++){ 142 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 143 return i; 144 } 145 } 146 return -1; 147 } 148 149 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 150 btstack_linked_list_iterator_t it; 151 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 152 while (btstack_linked_list_iterator_has_next(&it)){ 153 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 154 if (hfp_connection->acl_handle != handle) continue; 155 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 156 return hfp_connection; 157 } 158 return NULL; 159 } 160 161 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 162 if (callback == NULL){ 163 log_error("hfp_ag_register_packet_handler called with NULL callback"); 164 return; 165 } 166 hfp_ag_callback = callback; 167 hfp_set_ag_callback(callback); 168 } 169 170 static int use_in_band_tone(void){ 171 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 172 } 173 174 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 175 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 176 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 177 return hf && ag; 178 } 179 180 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 181 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 182 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 183 return hf && ag; 184 } 185 186 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 187 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 188 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 189 return hf && ag; 190 } 191 192 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){ 193 if (!name){ 194 name = default_hfp_ag_service_name; 195 } 196 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 197 198 /* 199 * 0x01 – Ability to reject a call 200 * 0x00 – No ability to reject a call 201 */ 202 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 203 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 204 205 // Construct SupportedFeatures for SDP bitmap: 206 // 207 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 208 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 209 // 210 uint16_t sdp_features = supported_features &0x1f; 211 if (supported_features & wide_band_speech){ 212 sdp_features |= 1 << 5; // Wide band speech bit 213 } 214 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 215 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 216 } 217 218 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 219 char buffer[20]; 220 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 221 return send_str_over_rfcomm(cid, buffer); 222 } 223 224 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 225 char buffer[40]; 226 sprintf(buffer, "\r\n%s:%d\r\n\r\nOK\r\n", HFP_SUPPORTED_FEATURES, hfp_supported_features); 227 return send_str_over_rfcomm(cid, buffer); 228 } 229 230 static int hfp_ag_send_ok(uint16_t cid){ 231 char buffer[10]; 232 sprintf(buffer, "\r\nOK\r\n"); 233 return send_str_over_rfcomm(cid, buffer); 234 } 235 236 static int hfp_ag_send_ring(uint16_t cid){ 237 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 238 } 239 240 static int hfp_ag_send_clip(uint16_t cid){ 241 char buffer[50]; 242 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 243 return send_str_over_rfcomm(cid, buffer); 244 } 245 246 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 247 char buffer[50]; 248 sprintf(buffer, "\r\n%s: ,\"%s\",%u, , \r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 249 return send_str_over_rfcomm(cid, buffer); 250 } 251 252 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 253 char buffer[50]; 254 sprintf(buffer, "\r\n%s: %s\r\n", HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 255 return send_str_over_rfcomm(cid, buffer); 256 } 257 258 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 259 char buffer[50]; 260 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 261 return send_str_over_rfcomm(cid, buffer); 262 } 263 264 static int hfp_ag_send_error(uint16_t cid){ 265 char buffer[10]; 266 sprintf(buffer, "\r\nERROR\r\n"); 267 return send_str_over_rfcomm(cid, buffer); 268 } 269 270 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 271 char buffer[20]; 272 sprintf(buffer, "\r\n%s=%d\r\n", HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 273 return send_str_over_rfcomm(cid, buffer); 274 } 275 276 // get size for indicator string 277 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 278 // template: ("$NAME",($MIN,$MAX)) 279 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 280 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 281 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 282 } 283 284 // store indicator 285 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer){ 286 sprintf((char *) buffer, "(\"%s\",(%d,%d)),", 287 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 288 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 289 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 290 } 291 292 // structure: header [indicator [comma indicator]] footer 293 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 294 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 295 if (!num_indicators) return 2; 296 return 3 + (num_indicators-1) * 2; 297 } 298 299 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 300 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 301 if (index == 0) { 302 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 303 } 304 index--; 305 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 306 int indicator_index = index >> 1; 307 if ((index & 1) == 0){ 308 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 309 } 310 if (indicator_index == num_indicators - 1){ 311 return 8; // "\r\n\r\nOK\r\n" 312 } 313 return 1; // comma 314 } 315 316 static void hgp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer){ 317 if (index == 0){ 318 *buffer++ = '\r'; 319 *buffer++ = '\n'; 320 int len = strlen(HFP_INDICATOR); 321 memcpy(buffer, HFP_INDICATOR, len); 322 buffer += len; 323 *buffer++ = ':'; 324 return; 325 } 326 index--; 327 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 328 int indicator_index = index >> 1; 329 if ((index & 1) == 0){ 330 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer); 331 return; 332 } 333 if (indicator_index == num_indicators-1){ 334 memcpy(buffer, "\r\n\r\nOK\r\n", 8); 335 return; 336 } 337 *buffer = ','; 338 } 339 340 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 341 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 342 int i; 343 int offset = 0; 344 for (i = 0; i < hfp_generic_status_indicators_nr-1; i++) { 345 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 346 } 347 if (i < hfp_generic_status_indicators_nr){ 348 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 349 } 350 return offset; 351 } 352 353 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 354 if (buffer_size < hfp_generic_status_indicators_nr * 3) return 0; 355 int i; 356 int offset = 0; 357 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 358 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); 359 } 360 return offset; 361 } 362 363 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 364 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 365 int i; 366 int offset = 0; 367 for (i = 0; i < hfp_ag_indicators_nr-1; i++) { 368 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 369 } 370 if (i<hfp_ag_indicators_nr){ 371 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 372 } 373 return offset; 374 } 375 376 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 377 if (buffer_size < hfp_ag_call_hold_services_nr * 3) return 0; 378 int i; 379 int offset = snprintf(buffer, buffer_size, "("); 380 for (i = 0; i < hfp_ag_call_hold_services_nr-1; i++) { 381 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 382 } 383 if (i<hfp_ag_call_hold_services_nr){ 384 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 385 } 386 return offset; 387 } 388 389 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 390 int start_segment, int num_segments, 391 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 392 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer)){ 393 394 // assumes: can send now == true 395 // assumes: num segments > 0 396 // assumes: individual segments are smaller than MTU 397 rfcomm_reserve_packet_buffer(); 398 int mtu = rfcomm_get_max_frame_size(cid); 399 uint8_t * data = rfcomm_get_outgoing_buffer(); 400 int offset = 0; 401 int segment = start_segment; 402 while (segment < num_segments){ 403 int segment_len = get_segment_len(hfp_connection, segment); 404 if (offset + segment_len > mtu) break; 405 // append segement 406 store_segment(hfp_connection, segment, data+offset); 407 offset += segment_len; 408 segment++; 409 } 410 rfcomm_send_prepared(cid, offset); 411 return segment; 412 } 413 414 // returns next segment to store 415 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 416 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 417 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 418 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 419 } 420 421 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 422 char buffer[40]; 423 const int size = sizeof(buffer); 424 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 425 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 426 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 427 return send_str_over_rfcomm(cid, buffer); 428 } 429 430 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 431 char buffer[40]; 432 const int size = sizeof(buffer); 433 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 434 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 435 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 436 return send_str_over_rfcomm(cid, buffer); 437 } 438 439 440 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 441 return hfp_ag_send_ok(cid); 442 } 443 444 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 445 char buffer[40]; 446 const int size = sizeof(buffer); 447 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 448 offset += hfp_hf_indicators_join(buffer+offset, size-offset-10); 449 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 450 return send_str_over_rfcomm(cid, buffer); 451 } 452 453 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 454 char buffer[40]; 455 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 456 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 457 return send_str_over_rfcomm(cid, buffer); 458 } 459 460 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 461 char buffer[20]; 462 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 463 return send_str_over_rfcomm(cid, buffer); 464 } 465 466 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 467 char buffer[41]; 468 if (strlen(op.name) == 0){ 469 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 470 } else { 471 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 472 offset += snprintf(buffer+offset, 16, "%s", op.name); 473 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 474 } 475 return send_str_over_rfcomm(cid, buffer); 476 } 477 478 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 479 char buffer[30]; 480 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 481 return send_str_over_rfcomm(cid, buffer); 482 } 483 484 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 485 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 486 } 487 488 static int hfp_ag_send_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 489 return hfp_ag_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 490 } 491 492 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 493 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 494 } 495 496 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 497 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 498 } 499 500 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 501 return hfp_ag_send_cmd_with_int(cid, HFP_RESPONSE_AND_HOLD, state); 502 } 503 504 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 505 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 506 507 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 508 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 509 return HFP_CODEC_MSBC; 510 } 511 } 512 return HFP_CODEC_CVSD; 513 } 514 515 static void hfp_init_link_settings(hfp_connection_t * hfp_connection){ 516 // determine highest possible link setting 517 hfp_connection->link_setting = HFP_LINK_SETTINGS_D1; 518 // anything else requires eSCO support on both sides 519 if (hci_extended_sco_link_supported() && hci_remote_esco_supported(hfp_connection->acl_handle)){ 520 switch (hfp_connection->negotiated_codec){ 521 case HFP_CODEC_CVSD: 522 hfp_connection->link_setting = HFP_LINK_SETTINGS_S3; 523 if ((hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) 524 && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4))){ 525 hfp_connection->link_setting = HFP_LINK_SETTINGS_S4; 526 } 527 break; 528 case HFP_CODEC_MSBC: 529 hfp_connection->link_setting = HFP_LINK_SETTINGS_T2; 530 break; 531 default: 532 break; 533 } 534 } 535 log_info("hfp_init_link_settings: %u", hfp_connection->link_setting); 536 } 537 538 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 539 /* events ( == commands): 540 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 541 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 542 hf_trigger_codec_connection_setup == received BCC 543 ag_trigger_codec_connection_setup == received from AG to send BCS 544 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 545 */ 546 547 switch (hfp_connection->codecs_state){ 548 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 549 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 550 break; 551 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 552 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 553 break; 554 default: 555 break; 556 } 557 558 // printf(" -> State machine: CC\n"); 559 560 switch (hfp_connection->command){ 561 case HFP_CMD_AVAILABLE_CODECS: 562 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 563 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 564 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 565 return 1; 566 } 567 568 switch (hfp_connection->codecs_state){ 569 case HFP_CODECS_AG_SENT_COMMON_CODEC: 570 case HFP_CODECS_EXCHANGED: 571 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 572 break; 573 default: 574 break; 575 } 576 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 577 return 1; 578 579 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 580 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 581 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 582 return 1; 583 584 case HFP_CMD_AG_SEND_COMMON_CODEC: 585 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 586 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 587 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 588 return 1; 589 590 case HFP_CMD_HF_CONFIRMED_CODEC: 591 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 592 hfp_connection->codecs_state = HFP_CODECS_ERROR; 593 hfp_ag_send_error(hfp_connection->rfcomm_cid); 594 return 1; 595 } 596 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 597 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 598 log_info("hfp: codec confirmed: %s", hfp_connection->negotiated_codec == HFP_CODEC_MSBC ? "mSBC" : "CVSD"); 599 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 600 // now, pick link settings 601 hfp_init_link_settings(hfp_connection); 602 return 1; 603 default: 604 break; 605 } 606 return 0; 607 } 608 609 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 610 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 611 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 612 613 // if active call exist, set per-hfp_connection state active, too (when audio is on) 614 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 615 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 616 } 617 // if AG is ringing, also start ringing on the HF 618 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS && 619 hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 620 hfp_ag_hf_start_ringing(hfp_connection); 621 } 622 } 623 624 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 625 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 626 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 627 int sent = 0; 628 switch(hfp_connection->command){ 629 case HFP_CMD_SUPPORTED_FEATURES: 630 switch(hfp_connection->state){ 631 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 632 case HFP_EXCHANGE_SUPPORTED_FEATURES: 633 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 634 if (has_codec_negotiation_feature(hfp_connection)){ 635 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 636 } else { 637 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 638 } 639 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 640 return 1; 641 default: 642 break; 643 } 644 break; 645 case HFP_CMD_AVAILABLE_CODECS: 646 sent = codecs_exchange_state_machine(hfp_connection); 647 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 648 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 649 } 650 return sent; 651 652 case HFP_CMD_RETRIEVE_AG_INDICATORS: 653 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 654 // HF requested AG Indicators and we did expect it 655 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 656 // continue below in state switch 657 } 658 break; 659 660 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 661 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 662 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 663 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 664 return 1; 665 666 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 667 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 668 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 669 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 670 } else if (has_hf_indicators_feature(hfp_connection)){ 671 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 672 } else { 673 hfp_ag_slc_established(hfp_connection); 674 } 675 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 676 return 1; 677 678 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 679 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 680 if (has_hf_indicators_feature(hfp_connection)){ 681 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 682 } 683 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 684 if (!has_hf_indicators_feature(hfp_connection)){ 685 hfp_ag_slc_established(hfp_connection); 686 } 687 return 1; 688 689 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 690 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 691 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 692 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 693 return 1; 694 695 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 696 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 697 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 698 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 699 return 1; 700 701 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 702 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 703 hfp_ag_slc_established(hfp_connection); 704 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 705 return 1; 706 default: 707 break; 708 } 709 710 switch (hfp_connection->state){ 711 case HFP_RETRIEVE_INDICATORS: { 712 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 713 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 714 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 715 if (next_segment < num_segments){ 716 // prepare sending of next segment 717 hfp_connection->send_ag_indicators_segment = next_segment; 718 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 719 } else { 720 // done, go to next state 721 hfp_connection->send_ag_indicators_segment = 0; 722 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 723 } 724 return 1; 725 } 726 default: 727 break; 728 } 729 return 0; 730 } 731 732 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 733 int sent = codecs_exchange_state_machine(hfp_connection); 734 if (sent) return 1; 735 736 switch(hfp_connection->command){ 737 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 738 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 739 hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 740 return 1; 741 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 742 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 743 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 744 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 745 hfp_ag_setup_audio_connection(hfp_connection); 746 } else { 747 hfp_ag_send_error(hfp_connection->rfcomm_cid); 748 } 749 return 1; 750 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 751 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 752 return 1; 753 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 754 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 755 return 1; 756 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 757 if (hfp_connection->network_operator.format != 0){ 758 hfp_ag_send_error(hfp_connection->rfcomm_cid); 759 } else { 760 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 761 } 762 return 1; 763 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 764 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 765 return 1; 766 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 767 if (hfp_connection->extended_audio_gateway_error){ 768 hfp_connection->extended_audio_gateway_error = 0; 769 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 770 return 1; 771 } 772 break; 773 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 774 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 775 return 1; 776 default: 777 break; 778 } 779 return 0; 780 } 781 782 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 783 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 784 hfp_connection->state > HFP_W2_DISCONNECT_SCO) return 0; 785 786 787 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->release_audio_connection){ 788 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 789 hfp_connection->release_audio_connection = 0; 790 gap_disconnect(hfp_connection->sco_handle); 791 return 1; 792 } 793 794 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 795 796 // run codecs exchange 797 int sent = codecs_exchange_state_machine(hfp_connection); 798 if (sent) return 1; 799 800 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 801 if (hfp_connection->establish_audio_connection){ 802 hfp_connection->state = HFP_W4_SCO_CONNECTED; 803 hfp_connection->establish_audio_connection = 0; 804 hfp_setup_synchronous_connection(hfp_connection); 805 return 1; 806 } 807 return 0; 808 } 809 810 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 811 btstack_linked_list_iterator_t it; 812 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 813 814 while (btstack_linked_list_iterator_has_next(&it)){ 815 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 816 if ( & hfp_connection->hfp_timeout == ts) { 817 return hfp_connection; 818 } 819 } 820 return NULL; 821 } 822 823 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 824 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 825 if (!hfp_connection) return; 826 827 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 828 hfp_connection->ag_ring = 1; 829 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 830 831 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 832 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 833 834 hfp_run_for_context(hfp_connection); 835 } 836 837 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 838 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 839 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 840 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 841 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 842 } 843 844 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 845 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 846 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 847 } 848 849 // 850 // transitition implementations for hfp_ag_call_state_machine 851 // 852 853 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 854 if (use_in_band_tone()){ 855 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 856 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 857 } else { 858 hfp_timeout_start(hfp_connection); 859 hfp_connection->ag_ring = 1; 860 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 861 hfp_connection->call_state = HFP_CALL_RINGING; 862 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 863 } 864 } 865 866 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 867 hfp_connection->ag_ring = 0; 868 hfp_connection->ag_send_clip = 0; 869 hfp_timeout_stop(hfp_connection); 870 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 871 } 872 873 static void hfp_ag_trigger_incoming_call(void){ 874 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 875 if (indicator_index < 0) return; 876 877 btstack_linked_list_iterator_t it; 878 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 879 while (btstack_linked_list_iterator_has_next(&it)){ 880 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 881 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 882 if (hfp_connection->call_state == HFP_CALL_IDLE){ 883 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 884 hfp_ag_hf_start_ringing(hfp_connection); 885 } 886 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 887 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 888 } 889 hfp_run_for_context(hfp_connection); 890 } 891 } 892 893 static void hfp_ag_transfer_callsetup_state(void){ 894 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 895 if (indicator_index < 0) return; 896 897 btstack_linked_list_iterator_t it; 898 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 899 while (btstack_linked_list_iterator_has_next(&it)){ 900 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 901 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 902 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 903 hfp_run_for_context(hfp_connection); 904 } 905 } 906 907 static void hfp_ag_transfer_call_state(void){ 908 int indicator_index = get_ag_indicator_index_for_name("call"); 909 if (indicator_index < 0) return; 910 911 btstack_linked_list_iterator_t it; 912 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 913 while (btstack_linked_list_iterator_has_next(&it)){ 914 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 915 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 916 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 917 hfp_run_for_context(hfp_connection); 918 } 919 } 920 921 static void hfp_ag_transfer_callheld_state(void){ 922 int indicator_index = get_ag_indicator_index_for_name("callheld"); 923 if (indicator_index < 0) return; 924 925 btstack_linked_list_iterator_t it; 926 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 927 while (btstack_linked_list_iterator_has_next(&it)){ 928 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 929 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 930 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 931 hfp_run_for_context(hfp_connection); 932 } 933 } 934 935 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 936 937 int call_indicator_index = get_ag_indicator_index_for_name("call"); 938 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 939 940 btstack_linked_list_iterator_t it; 941 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 942 while (btstack_linked_list_iterator_has_next(&it)){ 943 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 944 if (hfp_connection->call_state != HFP_CALL_RINGING && 945 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 946 947 hfp_ag_hf_stop_ringing(hfp_connection); 948 if (hfp_connection == source){ 949 hfp_connection->ok_pending = 1; 950 951 if (use_in_band_tone()){ 952 hfp_connection->call_state = HFP_CALL_ACTIVE; 953 } else { 954 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 955 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 956 } 957 958 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 959 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 960 961 } else { 962 hfp_connection->call_state = HFP_CALL_IDLE; 963 } 964 hfp_run_for_context(hfp_connection); 965 } 966 } 967 968 static void hfp_ag_ag_accept_call(void){ 969 970 int call_indicator_index = get_ag_indicator_index_for_name("call"); 971 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 972 973 btstack_linked_list_iterator_t it; 974 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 975 while (btstack_linked_list_iterator_has_next(&it)){ 976 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 977 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 978 979 hfp_ag_hf_stop_ringing(hfp_connection); 980 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 981 982 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 983 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 984 985 hfp_run_for_context(hfp_connection); 986 break; // only single 987 } 988 } 989 990 static void hfp_ag_trigger_reject_call(void){ 991 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 992 btstack_linked_list_iterator_t it; 993 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 994 while (btstack_linked_list_iterator_has_next(&it)){ 995 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 996 if (connection->call_state != HFP_CALL_RINGING && 997 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 998 hfp_ag_hf_stop_ringing(connection); 999 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1000 connection->call_state = HFP_CALL_IDLE; 1001 hfp_run_for_context(connection); 1002 } 1003 } 1004 1005 static void hfp_ag_emit_simple_event(uint8_t event_subtype){ 1006 uint8_t event[3]; 1007 event[0] = HCI_EVENT_HFP_META; 1008 event[1] = sizeof(event) - 2; 1009 event[2] = event_subtype; 1010 if (!hfp_ag_callback) return; 1011 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1012 } 1013 1014 static void hfp_ag_trigger_terminate_call(void){ 1015 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1016 1017 btstack_linked_list_iterator_t it; 1018 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1019 while (btstack_linked_list_iterator_has_next(&it)){ 1020 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1021 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1022 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1023 hfp_connection->call_state = HFP_CALL_IDLE; 1024 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1025 hfp_connection->release_audio_connection = 1; 1026 hfp_run_for_context(hfp_connection); 1027 } 1028 hfp_ag_emit_simple_event(HFP_SUBEVENT_CALL_TERMINATED); 1029 } 1030 1031 static void hfp_ag_set_callsetup_indicator(void){ 1032 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1033 if (!indicator){ 1034 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1035 return; 1036 }; 1037 indicator->status = hfp_gsm_callsetup_status(); 1038 } 1039 1040 static void hfp_ag_set_callheld_indicator(void){ 1041 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1042 if (!indicator){ 1043 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1044 return; 1045 }; 1046 indicator->status = hfp_gsm_callheld_status(); 1047 } 1048 1049 static void hfp_ag_set_call_indicator(void){ 1050 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1051 if (!indicator){ 1052 log_error("hfp_ag_set_call_state: call indicator is missing"); 1053 return; 1054 }; 1055 indicator->status = hfp_gsm_call_status(); 1056 } 1057 1058 static void hfp_ag_stop_ringing(void){ 1059 btstack_linked_list_iterator_t it; 1060 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1061 while (btstack_linked_list_iterator_has_next(&it)){ 1062 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1063 if (hfp_connection->call_state != HFP_CALL_RINGING && 1064 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1065 hfp_ag_hf_stop_ringing(hfp_connection); 1066 } 1067 } 1068 1069 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1070 btstack_linked_list_iterator_t it; 1071 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1072 while (btstack_linked_list_iterator_has_next(&it)){ 1073 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1074 if (hfp_connection->call_state == call_state) return hfp_connection; 1075 } 1076 return NULL; 1077 } 1078 1079 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1080 btstack_linked_list_iterator_t it; 1081 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1082 while (btstack_linked_list_iterator_has_next(&it)){ 1083 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1084 hfp_connection->send_response_and_hold_status = state + 1; 1085 } 1086 } 1087 1088 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1089 int indicator_index; 1090 switch (hfp_connection->call_state){ 1091 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1092 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1093 // we got event: audio hfp_connection established 1094 hfp_timeout_start(hfp_connection); 1095 hfp_connection->ag_ring = 1; 1096 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1097 hfp_connection->call_state = HFP_CALL_RINGING; 1098 hfp_connection->call_state = HFP_CALL_RINGING; 1099 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1100 break; 1101 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1102 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1103 // we got event: audio hfp_connection established 1104 hfp_connection->call_state = HFP_CALL_ACTIVE; 1105 break; 1106 case HFP_CALL_W2_SEND_CALL_WAITING: 1107 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1108 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1109 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1110 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1111 break; 1112 default: 1113 break; 1114 } 1115 return 0; 1116 } 1117 // hfp_connection is used to identify originating HF 1118 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1119 int indicator_index; 1120 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1121 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1122 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1123 1124 //printf("hfp_ag_call_sm event %d \n", event); 1125 switch (event){ 1126 case HFP_AG_INCOMING_CALL: 1127 switch (hfp_gsm_call_status()){ 1128 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1129 switch (hfp_gsm_callsetup_status()){ 1130 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1131 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1132 hfp_ag_set_callsetup_indicator(); 1133 hfp_ag_trigger_incoming_call(); 1134 log_info("AG rings"); 1135 break; 1136 default: 1137 break; 1138 } 1139 break; 1140 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1141 switch (hfp_gsm_callsetup_status()){ 1142 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1143 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1144 hfp_ag_set_callsetup_indicator(); 1145 hfp_ag_trigger_incoming_call(); 1146 log_info("AG call waiting"); 1147 break; 1148 default: 1149 break; 1150 } 1151 break; 1152 } 1153 break; 1154 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1155 switch (hfp_gsm_call_status()){ 1156 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1157 switch (hfp_gsm_callsetup_status()){ 1158 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1159 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1160 hfp_ag_set_call_indicator(); 1161 hfp_ag_set_callsetup_indicator(); 1162 hfp_ag_ag_accept_call(); 1163 log_info("AG answers call, accept call by GSM"); 1164 break; 1165 default: 1166 break; 1167 } 1168 break; 1169 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1170 switch (hfp_gsm_callsetup_status()){ 1171 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1172 log_info("AG: current call is placed on hold, incoming call gets active"); 1173 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1174 hfp_ag_set_callsetup_indicator(); 1175 hfp_ag_set_callheld_indicator(); 1176 hfp_ag_transfer_callsetup_state(); 1177 hfp_ag_transfer_callheld_state(); 1178 break; 1179 default: 1180 break; 1181 } 1182 break; 1183 } 1184 break; 1185 1186 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1187 switch (hfp_gsm_call_status()){ 1188 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1189 switch (hfp_gsm_callheld_status()){ 1190 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1191 log_info("AG: joining held call with active call"); 1192 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1193 hfp_ag_set_callheld_indicator(); 1194 hfp_ag_transfer_callheld_state(); 1195 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1196 break; 1197 default: 1198 break; 1199 } 1200 break; 1201 default: 1202 break; 1203 } 1204 break; 1205 1206 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1207 switch (hfp_gsm_call_status()){ 1208 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1209 switch (hfp_gsm_callsetup_status()){ 1210 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1211 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1212 hfp_ag_set_callsetup_indicator(); 1213 hfp_ag_set_call_indicator(); 1214 hfp_ag_hf_accept_call(hfp_connection); 1215 log_info("HF answers call, accept call by GSM"); 1216 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1217 break; 1218 default: 1219 break; 1220 } 1221 break; 1222 default: 1223 break; 1224 } 1225 break; 1226 1227 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1228 switch (hfp_gsm_call_status()){ 1229 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1230 switch (hfp_gsm_callsetup_status()){ 1231 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1232 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1233 hfp_ag_response_and_hold_active = 1; 1234 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1235 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1236 // as with regualr call 1237 hfp_ag_set_call_indicator(); 1238 hfp_ag_set_callsetup_indicator(); 1239 hfp_ag_ag_accept_call(); 1240 log_info("AG response and hold - hold by AG"); 1241 break; 1242 default: 1243 break; 1244 } 1245 break; 1246 default: 1247 break; 1248 } 1249 break; 1250 1251 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1252 switch (hfp_gsm_call_status()){ 1253 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1254 switch (hfp_gsm_callsetup_status()){ 1255 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1256 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1257 hfp_ag_response_and_hold_active = 1; 1258 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1259 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1260 // as with regualr call 1261 hfp_ag_set_call_indicator(); 1262 hfp_ag_set_callsetup_indicator(); 1263 hfp_ag_hf_accept_call(hfp_connection); 1264 log_info("AG response and hold - hold by HF"); 1265 break; 1266 default: 1267 break; 1268 } 1269 break; 1270 default: 1271 break; 1272 } 1273 break; 1274 1275 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1276 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1277 if (!hfp_ag_response_and_hold_active) break; 1278 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1279 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1280 hfp_ag_response_and_hold_active = 0; 1281 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1282 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1283 log_info("Held Call accepted and active"); 1284 break; 1285 1286 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1287 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1288 if (!hfp_ag_response_and_hold_active) break; 1289 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1290 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1291 hfp_ag_response_and_hold_active = 0; 1292 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1293 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1294 // from terminate by ag 1295 hfp_ag_set_call_indicator(); 1296 hfp_ag_trigger_terminate_call(); 1297 break; 1298 1299 case HFP_AG_TERMINATE_CALL_BY_HF: 1300 switch (hfp_gsm_call_status()){ 1301 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1302 switch (hfp_gsm_callsetup_status()){ 1303 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1304 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1305 hfp_ag_set_callsetup_indicator(); 1306 hfp_ag_transfer_callsetup_state(); 1307 hfp_ag_trigger_reject_call(); 1308 log_info("HF Rejected Incoming call, AG terminate call"); 1309 break; 1310 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1311 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1312 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1313 hfp_ag_set_callsetup_indicator(); 1314 hfp_ag_transfer_callsetup_state(); 1315 log_info("AG terminate outgoing call process"); 1316 break; 1317 default: 1318 break; 1319 } 1320 break; 1321 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1322 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1323 hfp_ag_set_call_indicator(); 1324 hfp_ag_transfer_call_state(); 1325 hfp_connection->call_state = HFP_CALL_IDLE; 1326 log_info("AG terminate call"); 1327 break; 1328 } 1329 break; 1330 1331 case HFP_AG_TERMINATE_CALL_BY_AG: 1332 switch (hfp_gsm_call_status()){ 1333 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1334 switch (hfp_gsm_callsetup_status()){ 1335 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1336 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1337 hfp_ag_set_callsetup_indicator(); 1338 hfp_ag_trigger_reject_call(); 1339 log_info("AG Rejected Incoming call, AG terminate call"); 1340 break; 1341 default: 1342 break; 1343 } 1344 break; 1345 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1346 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1347 hfp_ag_set_callsetup_indicator(); 1348 hfp_ag_set_call_indicator(); 1349 hfp_ag_trigger_terminate_call(); 1350 log_info("AG terminate call"); 1351 break; 1352 default: 1353 break; 1354 } 1355 break; 1356 case HFP_AG_CALL_DROPPED: 1357 switch (hfp_gsm_call_status()){ 1358 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1359 switch (hfp_gsm_callsetup_status()){ 1360 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1361 hfp_ag_stop_ringing(); 1362 log_info("Incoming call interrupted"); 1363 break; 1364 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1365 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1366 log_info("Outgoing call interrupted\n"); 1367 log_info("AG notify call dropped\n"); 1368 break; 1369 default: 1370 break; 1371 } 1372 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1373 hfp_ag_set_callsetup_indicator(); 1374 hfp_ag_transfer_callsetup_state(); 1375 break; 1376 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1377 if (hfp_ag_response_and_hold_active) { 1378 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1379 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1380 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1381 } 1382 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1383 hfp_ag_set_callsetup_indicator(); 1384 hfp_ag_set_call_indicator(); 1385 hfp_ag_trigger_terminate_call(); 1386 log_info("AG notify call dropped"); 1387 break; 1388 default: 1389 break; 1390 } 1391 break; 1392 1393 case HFP_AG_OUTGOING_CALL_INITIATED: 1394 // directly reject call if number of free slots is exceeded 1395 if (!hfp_gsm_call_possible()){ 1396 hfp_connection->send_error = 1; 1397 hfp_run_for_context(hfp_connection); 1398 break; 1399 } 1400 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1401 1402 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1403 1404 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1405 break; 1406 1407 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1408 // directly reject call if number of free slots is exceeded 1409 if (!hfp_gsm_call_possible()){ 1410 hfp_connection->send_error = 1; 1411 hfp_run_for_context(hfp_connection); 1412 break; 1413 } 1414 1415 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1416 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1417 1418 log_info("Redial last number"); 1419 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1420 1421 if (strlen(last_dialed_number) > 0){ 1422 log_info("Last number exists: accept call"); 1423 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1424 } else { 1425 log_info("log_infoLast number missing: reject call"); 1426 hfp_ag_outgoing_call_rejected(); 1427 } 1428 break; 1429 } 1430 case HFP_AG_OUTGOING_CALL_REJECTED: 1431 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1432 if (!hfp_connection){ 1433 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1434 break; 1435 } 1436 1437 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1438 hfp_connection->call_state = HFP_CALL_IDLE; 1439 hfp_connection->send_error = 1; 1440 hfp_run_for_context(hfp_connection); 1441 break; 1442 1443 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1444 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1445 if (!hfp_connection){ 1446 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1447 break; 1448 } 1449 1450 hfp_connection->ok_pending = 1; 1451 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1452 1453 // trigger callsetup to be 1454 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1455 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1456 1457 hfp_ag_set_callsetup_indicator(); 1458 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1459 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1460 1461 // put current call on hold if active 1462 if (put_call_on_hold){ 1463 log_info("AG putting current call on hold for new outgoing calllog_info"); 1464 hfp_ag_set_callheld_indicator(); 1465 indicator_index = get_ag_indicator_index_for_name("callheld"); 1466 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1467 } 1468 1469 // start audio if needed 1470 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1471 break; 1472 } 1473 case HFP_AG_OUTGOING_CALL_RINGING: 1474 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1475 if (!hfp_connection){ 1476 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1477 break; 1478 } 1479 1480 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1481 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1482 hfp_ag_set_callsetup_indicator(); 1483 hfp_ag_transfer_callsetup_state(); 1484 break; 1485 1486 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1487 // get outgoing call 1488 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1489 if (!hfp_connection){ 1490 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1491 } 1492 if (!hfp_connection){ 1493 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1494 break; 1495 } 1496 1497 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1498 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1499 hfp_connection->call_state = HFP_CALL_ACTIVE; 1500 hfp_ag_set_callsetup_indicator(); 1501 hfp_ag_set_call_indicator(); 1502 hfp_ag_transfer_call_state(); 1503 hfp_ag_transfer_callsetup_state(); 1504 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1505 hfp_ag_set_callheld_indicator(); 1506 hfp_ag_transfer_callheld_state(); 1507 } 1508 break; 1509 } 1510 1511 case HFP_AG_CALL_HOLD_USER_BUSY: 1512 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1513 hfp_ag_set_callsetup_indicator(); 1514 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1515 hfp_connection->call_state = HFP_CALL_ACTIVE; 1516 log_info("AG: Call Waiting, User Busy"); 1517 break; 1518 1519 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1520 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1521 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1522 1523 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1524 if (call_held || call_setup_in_progress){ 1525 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1526 1527 } 1528 1529 if (call_setup_in_progress){ 1530 log_info("AG: Call Dropped, Accept new call"); 1531 hfp_ag_set_callsetup_indicator(); 1532 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1533 } else { 1534 log_info("AG: Call Dropped, Resume held call"); 1535 } 1536 if (call_held){ 1537 hfp_ag_set_callheld_indicator(); 1538 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1539 } 1540 1541 hfp_connection->call_state = HFP_CALL_ACTIVE; 1542 break; 1543 } 1544 1545 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1546 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1547 // only update if callsetup changed 1548 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1549 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1550 1551 if (call_setup_in_progress){ 1552 log_info("AG: Call on Hold, Accept new call"); 1553 hfp_ag_set_callsetup_indicator(); 1554 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1555 } else { 1556 log_info("AG: Swap calls"); 1557 } 1558 1559 hfp_ag_set_callheld_indicator(); 1560 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1561 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1562 hfp_connection->call_state = HFP_CALL_ACTIVE; 1563 break; 1564 } 1565 1566 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1567 // Adds a held call to the conversation. 1568 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1569 log_info("AG: Join 3-way-call"); 1570 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1571 hfp_ag_set_callheld_indicator(); 1572 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1573 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1574 } 1575 hfp_connection->call_state = HFP_CALL_ACTIVE; 1576 break; 1577 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1578 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1579 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1580 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1581 hfp_ag_set_call_indicator(); 1582 hfp_ag_set_callheld_indicator(); 1583 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1584 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1585 hfp_connection->call_state = HFP_CALL_IDLE; 1586 break; 1587 1588 default: 1589 break; 1590 } 1591 1592 1593 } 1594 1595 1596 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1597 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1598 if (!active_call) return; 1599 1600 int idx = active_call->index; 1601 hfp_enhanced_call_dir_t dir = active_call->direction; 1602 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1603 hfp_enhanced_call_mode_t mode = active_call->mode; 1604 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1605 uint8_t type = active_call->clip_type; 1606 char * number = active_call->clip_number; 1607 1608 char buffer[100]; 1609 // TODO: check length of a buffer, to fit the MTU 1610 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1611 if (number){ 1612 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1613 } 1614 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1615 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, 1616 mode, mpty, type, number); 1617 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1618 } 1619 1620 static void hfp_run_for_context(hfp_connection_t *hfp_connection){ 1621 if (!hfp_connection) return; 1622 if (!hfp_connection->rfcomm_cid) return; 1623 1624 if (hfp_connection->local_role != HFP_ROLE_AG) { 1625 log_info("HFP AG%p, wrong role %u", hfp_connection, hfp_connection->local_role); 1626 return; 1627 } 1628 1629 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1630 log_info("hfp_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1631 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1632 return; 1633 } 1634 if (hfp_connection->send_status_of_current_calls){ 1635 hfp_connection->ok_pending = 0; 1636 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1637 hfp_connection->next_call_index++; 1638 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1639 } else { 1640 hfp_connection->next_call_index = 0; 1641 hfp_connection->ok_pending = 1; 1642 hfp_connection->send_status_of_current_calls = 0; 1643 } 1644 return; 1645 } 1646 1647 if (hfp_connection->ag_notify_incoming_call_waiting){ 1648 hfp_connection->ag_notify_incoming_call_waiting = 0; 1649 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1650 return; 1651 } 1652 1653 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1654 hfp_connection->ok_pending = 0; 1655 hfp_connection->send_error = 0; 1656 hfp_connection->command = HFP_CMD_NONE; 1657 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1658 return; 1659 } 1660 1661 if (hfp_connection->send_error){ 1662 hfp_connection->send_error = 0; 1663 hfp_connection->command = HFP_CMD_NONE; 1664 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1665 return; 1666 } 1667 1668 // note: before update AG indicators and ok_pending 1669 if (hfp_connection->send_response_and_hold_status){ 1670 int status = hfp_connection->send_response_and_hold_status - 1; 1671 hfp_connection->send_response_and_hold_status = 0; 1672 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1673 return; 1674 } 1675 1676 if (hfp_connection->ok_pending){ 1677 hfp_connection->ok_pending = 0; 1678 hfp_connection->command = HFP_CMD_NONE; 1679 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1680 return; 1681 } 1682 1683 // update AG indicators 1684 if (hfp_connection->ag_indicators_status_update_bitmap){ 1685 int i; 1686 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1687 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1688 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1689 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1690 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1691 break; 1692 } 1693 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1694 return; 1695 } 1696 } 1697 } 1698 1699 if (hfp_connection->ag_ring){ 1700 hfp_connection->ag_ring = 0; 1701 hfp_connection->command = HFP_CMD_NONE; 1702 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1703 return; 1704 } 1705 1706 if (hfp_connection->ag_send_clip){ 1707 hfp_connection->ag_send_clip = 0; 1708 hfp_connection->command = HFP_CMD_NONE; 1709 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1710 return; 1711 } 1712 1713 if (hfp_connection->send_phone_number_for_voice_tag){ 1714 hfp_connection->send_phone_number_for_voice_tag = 0; 1715 hfp_connection->command = HFP_CMD_NONE; 1716 hfp_connection->ok_pending = 1; 1717 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1718 return; 1719 } 1720 1721 if (hfp_connection->send_subscriber_number){ 1722 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1723 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1724 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1725 } else { 1726 hfp_connection->send_subscriber_number = 0; 1727 hfp_connection->next_subscriber_number_to_send = 0; 1728 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1729 } 1730 hfp_connection->command = HFP_CMD_NONE; 1731 1732 } 1733 1734 if (hfp_connection->send_microphone_gain){ 1735 hfp_connection->send_microphone_gain = 0; 1736 hfp_connection->command = HFP_CMD_NONE; 1737 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1738 return; 1739 } 1740 1741 if (hfp_connection->send_speaker_gain){ 1742 hfp_connection->send_speaker_gain = 0; 1743 hfp_connection->command = HFP_CMD_NONE; 1744 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1745 return; 1746 } 1747 1748 if (hfp_connection->send_ag_status_indicators){ 1749 hfp_connection->send_ag_status_indicators = 0; 1750 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1751 return; 1752 } 1753 1754 // trigger codec exchange if requested by app 1755 if (hfp_connection->trigger_codec_exchange){ 1756 log_info("trigger codec, command %u, codec state %u", hfp_connection->command, hfp_connection->codecs_state); 1757 } 1758 if (hfp_connection->trigger_codec_exchange && hfp_connection->command == HFP_CMD_NONE){ 1759 switch (hfp_connection->codecs_state){ 1760 case HFP_CODECS_IDLE: 1761 case HFP_CODECS_RECEIVED_LIST: 1762 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1763 case HFP_CODECS_ERROR: 1764 hfp_connection->trigger_codec_exchange = 0; 1765 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1766 break; 1767 default: 1768 break; 1769 } 1770 } 1771 1772 int cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1773 if (!cmd_sent){ 1774 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1775 } 1776 1777 if (!cmd_sent){ 1778 cmd_sent = call_setup_state_machine(hfp_connection); 1779 } 1780 1781 if (!cmd_sent){ 1782 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1783 } 1784 1785 if (hfp_connection->command == HFP_CMD_NONE && !cmd_sent){ 1786 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1787 switch(hfp_connection->state){ 1788 case HFP_W2_DISCONNECT_RFCOMM: 1789 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1790 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1791 break; 1792 default: 1793 break; 1794 } 1795 } 1796 1797 if (cmd_sent){ 1798 hfp_connection->command = HFP_CMD_NONE; 1799 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1800 } 1801 } 1802 1803 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1804 int i; 1805 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1806 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1807 if (indicator->uuid == number){ 1808 return indicator; 1809 } 1810 } 1811 return NULL; 1812 } 1813 1814 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1815 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1816 1817 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1818 if (size < 1) return; 1819 1820 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1821 if (!hfp_connection) return; 1822 1823 // temp overwrite last byte (most likely \n for log_info) 1824 char last_char = packet[size-1]; 1825 packet[size-1] = 0; 1826 log_info("HFP_RX %s", packet); 1827 packet[size-1] = last_char; 1828 1829 // process messages byte-wise 1830 int pos; 1831 for (pos = 0; pos < size ; pos++){ 1832 hfp_parse(hfp_connection, packet[pos], 0); 1833 } 1834 hfp_generic_status_indicator_t * indicator; 1835 int value; 1836 switch(hfp_connection->command){ 1837 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1838 if (hfp_ag_response_and_hold_active){ 1839 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1840 } 1841 hfp_connection->ok_pending = 1; 1842 break; 1843 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1844 value = btstack_atoi((char *)&hfp_connection->line_buffer[0]); 1845 log_info("HF Response and Hold: %u", value); 1846 switch(value){ 1847 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1848 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1849 break; 1850 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1851 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1852 break; 1853 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1854 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1855 break; 1856 default: 1857 break; 1858 } 1859 hfp_connection->ok_pending = 1; 1860 break; 1861 case HFP_CMD_HF_INDICATOR_STATUS: 1862 hfp_connection->command = HFP_CMD_NONE; 1863 // find indicator by assigned number 1864 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1865 if (!indicator){ 1866 hfp_connection->send_error = 1; 1867 break; 1868 } 1869 value = btstack_atoi((char *)&hfp_connection->line_buffer[0]); 1870 switch (indicator->uuid){ 1871 case 1: // enhanced security 1872 if (value > 1) { 1873 hfp_connection->send_error = 1; 1874 return; 1875 } 1876 log_info("HF Indicator 'enhanced security' set to %u", value); 1877 break; 1878 case 2: // battery level 1879 if (value > 100){ 1880 hfp_connection->send_error = 1; 1881 return; 1882 } 1883 log_info("HF Indicator 'battery' set to %u", value); 1884 break; 1885 default: 1886 log_info("HF Indicator unknown set to %u", value); 1887 break; 1888 } 1889 hfp_connection->ok_pending = 1; 1890 break; 1891 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1892 // expected by SLC state machine 1893 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1894 hfp_connection->send_ag_indicators_segment = 0; 1895 hfp_connection->send_ag_status_indicators = 1; 1896 break; 1897 case HFP_CMD_LIST_CURRENT_CALLS: 1898 hfp_connection->command = HFP_CMD_NONE; 1899 hfp_connection->next_call_index = 0; 1900 hfp_connection->send_status_of_current_calls = 1; 1901 break; 1902 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1903 if (subscriber_numbers_count == 0){ 1904 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1905 break; 1906 } 1907 hfp_connection->next_subscriber_number_to_send = 0; 1908 hfp_connection->send_subscriber_number = 1; 1909 break; 1910 case HFP_CMD_TRANSMIT_DTMF_CODES: 1911 hfp_connection->command = HFP_CMD_NONE; 1912 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &hfp_connection->line_buffer[0]); 1913 break; 1914 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1915 hfp_connection->command = HFP_CMD_NONE; 1916 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1917 break; 1918 case HFP_CMD_TURN_OFF_EC_AND_NR: 1919 hfp_connection->command = HFP_CMD_NONE; 1920 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1921 hfp_connection->ok_pending = 1; 1922 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1923 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1924 } else { 1925 hfp_connection->send_error = 1; 1926 } 1927 break; 1928 case HFP_CMD_CALL_ANSWERED: 1929 hfp_connection->command = HFP_CMD_NONE; 1930 log_info("HFP: ATA"); 1931 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1932 break; 1933 case HFP_CMD_HANG_UP_CALL: 1934 hfp_connection->command = HFP_CMD_NONE; 1935 hfp_connection->ok_pending = 1; 1936 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1937 break; 1938 case HFP_CMD_CALL_HOLD: { 1939 // TODO: fully implement this 1940 log_error("HFP: unhandled call hold type %c", hfp_connection->line_buffer[0]); 1941 hfp_connection->command = HFP_CMD_NONE; 1942 hfp_connection->ok_pending = 1; 1943 hfp_connection->call_index = 0; 1944 1945 if (hfp_connection->line_buffer[1] != '\0'){ 1946 hfp_connection->call_index = btstack_atoi((char *)&hfp_connection->line_buffer[1]); 1947 } 1948 1949 switch (hfp_connection->line_buffer[0]){ 1950 case '0': 1951 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1952 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1953 break; 1954 case '1': 1955 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1956 // Where both a held and a waiting call exist, the above procedures shall apply to the 1957 // waiting call (i.e., not to the held call) in conflicting situation. 1958 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1959 break; 1960 case '2': 1961 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1962 // Where both a held and a waiting call exist, the above procedures shall apply to the 1963 // waiting call (i.e., not to the held call) in conflicting situation. 1964 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1965 break; 1966 case '3': 1967 // Adds a held call to the conversation. 1968 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1969 break; 1970 case '4': 1971 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1972 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1973 break; 1974 default: 1975 break; 1976 } 1977 break; 1978 } 1979 case HFP_CMD_CALL_PHONE_NUMBER: 1980 hfp_connection->command = HFP_CMD_NONE; 1981 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1982 break; 1983 case HFP_CMD_REDIAL_LAST_NUMBER: 1984 hfp_connection->command = HFP_CMD_NONE; 1985 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1986 break; 1987 case HFP_CMD_ENABLE_CLIP: 1988 hfp_connection->command = HFP_CMD_NONE; 1989 hfp_connection->clip_enabled = hfp_connection->line_buffer[8] != '0'; 1990 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1991 hfp_connection->ok_pending = 1; 1992 break; 1993 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1994 hfp_connection->command = HFP_CMD_NONE; 1995 hfp_connection->call_waiting_notification_enabled = hfp_connection->line_buffer[8] != '0'; 1996 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1997 hfp_connection->ok_pending = 1; 1998 break; 1999 case HFP_CMD_SET_SPEAKER_GAIN: 2000 hfp_connection->command = HFP_CMD_NONE; 2001 hfp_connection->ok_pending = 1; 2002 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2003 break; 2004 case HFP_CMD_SET_MICROPHONE_GAIN: 2005 hfp_connection->command = HFP_CMD_NONE; 2006 hfp_connection->ok_pending = 1; 2007 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2008 break; 2009 default: 2010 break; 2011 } 2012 } 2013 2014 static void hfp_run(void){ 2015 btstack_linked_list_iterator_t it; 2016 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2017 while (btstack_linked_list_iterator_has_next(&it)){ 2018 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2019 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2020 hfp_run_for_context(hfp_connection); 2021 } 2022 } 2023 2024 static void rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2025 switch (packet_type){ 2026 case RFCOMM_DATA_PACKET: 2027 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 2028 break; 2029 case HCI_EVENT_PACKET: 2030 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2031 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2032 hfp_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2033 return; 2034 } 2035 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2036 break; 2037 default: 2038 break; 2039 } 2040 2041 hfp_run(); 2042 } 2043 2044 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2045 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2046 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2047 return; 2048 } 2049 int i; 2050 hfp_codecs_nr = codecs_nr; 2051 for (i=0; i < codecs_nr; i++){ 2052 hfp_codecs[i] = codecs[i]; 2053 } 2054 } 2055 2056 void hfp_ag_init_supported_features(uint32_t supported_features){ 2057 hfp_supported_features = supported_features; 2058 } 2059 2060 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2061 hfp_ag_indicators_nr = ag_indicators_nr; 2062 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2063 } 2064 2065 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2066 if (hf_indicators_nr > HFP_MAX_NUM_HF_INDICATORS) return; 2067 hfp_generic_status_indicators_nr = hf_indicators_nr; 2068 memcpy(hfp_generic_status_indicators, hf_indicators, hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2069 } 2070 2071 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2072 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2073 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2074 } 2075 2076 2077 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2078 hfp_init(); 2079 2080 rfcomm_register_service(&rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2081 hfp_set_ag_rfcomm_packet_handler(&rfcomm_packet_handler); 2082 2083 hfp_ag_response_and_hold_active = 0; 2084 subscriber_numbers = NULL; 2085 subscriber_numbers_count = 0; 2086 2087 hfp_gsm_init(); 2088 } 2089 2090 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2091 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2092 } 2093 2094 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2095 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2096 if (!hfp_connection){ 2097 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2098 return; 2099 } 2100 hfp_release_service_level_connection(hfp_connection); 2101 hfp_run_for_context(hfp_connection); 2102 } 2103 2104 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2105 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2106 if (!hfp_connection){ 2107 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2108 return; 2109 } 2110 hfp_connection->extended_audio_gateway_error = 0; 2111 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2112 return; 2113 } 2114 hfp_connection->extended_audio_gateway_error = error; 2115 hfp_run_for_context(hfp_connection); 2116 } 2117 2118 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2119 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2120 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2121 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2122 2123 hfp_connection->establish_audio_connection = 1; 2124 if (!has_codec_negotiation_feature(hfp_connection)){ 2125 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2126 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2127 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2128 // now, pick link settings 2129 hfp_init_link_settings(hfp_connection); 2130 return; 2131 } 2132 2133 hfp_connection->trigger_codec_exchange = 1; 2134 } 2135 2136 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2137 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2138 if (!hfp_connection){ 2139 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2140 return; 2141 } 2142 hfp_connection->trigger_codec_exchange = 0; 2143 hfp_connection->establish_audio_connection = 0; 2144 hfp_ag_setup_audio_connection(hfp_connection); 2145 hfp_run_for_context(hfp_connection); 2146 } 2147 2148 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2149 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2150 if (!hfp_connection){ 2151 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2152 return; 2153 } 2154 hfp_release_audio_connection(hfp_connection); 2155 hfp_run_for_context(hfp_connection); 2156 } 2157 2158 /** 2159 * @brief Enable in-band ring tone 2160 */ 2161 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2162 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2163 return; 2164 } 2165 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2166 2167 btstack_linked_list_iterator_t it; 2168 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2169 while (btstack_linked_list_iterator_has_next(&it)){ 2170 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2171 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2172 hfp_run_for_context(hfp_connection); 2173 } 2174 } 2175 2176 /** 2177 * @brief Called from GSM 2178 */ 2179 void hfp_ag_incoming_call(void){ 2180 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2181 } 2182 2183 /** 2184 * @brief number is stored. 2185 */ 2186 void hfp_ag_set_clip(uint8_t type, const char * number){ 2187 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2188 } 2189 2190 void hfp_ag_call_dropped(void){ 2191 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2192 } 2193 2194 // call from AG UI 2195 void hfp_ag_answer_incoming_call(void){ 2196 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2197 } 2198 2199 void hfp_ag_join_held_call(void){ 2200 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2201 } 2202 2203 void hfp_ag_terminate_call(void){ 2204 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2205 } 2206 2207 void hfp_ag_outgoing_call_ringing(void){ 2208 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2209 } 2210 2211 void hfp_ag_outgoing_call_established(void){ 2212 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2213 } 2214 2215 void hfp_ag_outgoing_call_rejected(void){ 2216 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2217 } 2218 2219 void hfp_ag_outgoing_call_accepted(void){ 2220 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2221 } 2222 2223 void hfp_ag_hold_incoming_call(void){ 2224 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2225 } 2226 2227 void hfp_ag_accept_held_incoming_call(void) { 2228 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2229 } 2230 2231 void hfp_ag_reject_held_incoming_call(void){ 2232 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2233 } 2234 2235 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2236 int indicator_index = get_ag_indicator_index_for_name(name); 2237 if (indicator_index < 0) return; 2238 hfp_ag_indicators[indicator_index].status = value; 2239 2240 2241 btstack_linked_list_iterator_t it; 2242 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2243 while (btstack_linked_list_iterator_has_next(&it)){ 2244 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2245 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2246 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2247 continue; 2248 } 2249 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2250 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2251 hfp_run_for_context(hfp_connection); 2252 } 2253 } 2254 2255 void hfp_ag_set_registration_status(int status){ 2256 hfp_ag_set_ag_indicator("service", status); 2257 } 2258 2259 void hfp_ag_set_signal_strength(int strength){ 2260 hfp_ag_set_ag_indicator("signal", strength); 2261 } 2262 2263 void hfp_ag_set_roaming_status(int status){ 2264 hfp_ag_set_ag_indicator("roam", status); 2265 } 2266 2267 void hfp_ag_set_battery_level(int level){ 2268 hfp_ag_set_ag_indicator("battchg", level); 2269 } 2270 2271 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2272 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2273 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2274 if (!hfp_connection){ 2275 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2276 return; 2277 } 2278 2279 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2280 log_info("AG cannot acivate voice recognition - not supported by HF"); 2281 return; 2282 } 2283 2284 if (activate){ 2285 hfp_ag_establish_audio_connection(acl_handle); 2286 } 2287 2288 hfp_connection->ag_activate_voice_recognition = activate; 2289 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2290 hfp_run_for_context(hfp_connection); 2291 } 2292 2293 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2294 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2295 if (!hfp_connection){ 2296 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2297 return; 2298 } 2299 if (hfp_connection->microphone_gain != gain){ 2300 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2301 hfp_connection->microphone_gain = gain; 2302 hfp_connection->send_microphone_gain = 1; 2303 } 2304 hfp_run_for_context(hfp_connection); 2305 } 2306 2307 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2308 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2309 if (!hfp_connection){ 2310 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2311 return; 2312 } 2313 if (hfp_connection->speaker_gain != gain){ 2314 hfp_connection->speaker_gain = gain; 2315 hfp_connection->send_speaker_gain = 1; 2316 } 2317 hfp_run_for_context(hfp_connection); 2318 } 2319 2320 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2321 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2322 if (!hfp_connection){ 2323 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2324 return; 2325 } 2326 hfp_ag_set_clip(0, number); 2327 hfp_connection->send_phone_number_for_voice_tag = 1; 2328 } 2329 2330 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2331 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2332 if (!hfp_connection){ 2333 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2334 return; 2335 } 2336 hfp_connection->send_error = 1; 2337 } 2338 2339 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2340 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2341 if (!hfp_connection){ 2342 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2343 return; 2344 } 2345 hfp_connection->ok_pending = 1; 2346 } 2347 2348 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2349 subscriber_numbers = numbers; 2350 subscriber_numbers_count = numbers_count; 2351 } 2352 2353 void hfp_ag_clear_last_dialed_number(void){ 2354 hfp_gsm_clear_last_dialed_number(); 2355 } 2356 2357 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2358 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2359 if (!hfp_connection){ 2360 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2361 return; 2362 } 2363 if (!hfp_connection->call_waiting_notification_enabled) return; 2364 2365 hfp_connection->ag_notify_incoming_call_waiting = 1; 2366 hfp_run_for_context(hfp_connection); 2367 } 2368 2369