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 packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 73 static void hfp_run_for_context(hfp_connection_t *context); 74 static void hfp_ag_setup_audio_connection(hfp_connection_t * connection); 75 static void hfp_ag_hf_start_ringing(hfp_connection_t * context); 76 77 // public prototypes 78 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 79 int get_hfp_generic_status_indicators_nr(void); 80 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 81 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 82 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 83 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 84 85 // gobals 86 static const char default_hfp_ag_service_name[] = "Voice gateway"; 87 88 static uint16_t hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 89 90 static uint8_t hfp_codecs_nr = 0; 91 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 92 93 static int hfp_ag_indicators_nr = 0; 94 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_AG_INDICATORS]; 95 96 static int hfp_generic_status_indicators_nr = 0; 97 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_HF_INDICATORS]; 98 99 static int hfp_ag_call_hold_services_nr = 0; 100 static char *hfp_ag_call_hold_services[6]; 101 static btstack_packet_handler_t hfp_callback; 102 103 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 104 static int hfp_ag_response_and_hold_active = 0; 105 106 // Subcriber information entries 107 static hfp_phone_number_t * subscriber_numbers = NULL; 108 static int subscriber_numbers_count = 0; 109 110 static btstack_packet_callback_registration_t hci_event_callback_registration; 111 static void hfp_run_for_context(hfp_connection_t *hfp_connection); 112 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 113 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection); 114 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection); 115 116 117 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 118 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 119 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 120 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 121 } 122 return hfp_connection->ag_indicators_nr; 123 } 124 125 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 126 // TODO: save only value, and value changed in the hfp_connection? 127 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 128 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 129 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 130 } 131 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 132 } 133 134 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 135 int i; 136 for (i = 0; i < hfp_ag_indicators_nr; i++){ 137 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 138 return &hfp_ag_indicators[i]; 139 } 140 } 141 return NULL; 142 } 143 144 static int get_ag_indicator_index_for_name(const char * name){ 145 int i; 146 for (i = 0; i < hfp_ag_indicators_nr; i++){ 147 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 148 return i; 149 } 150 } 151 return -1; 152 } 153 154 155 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 156 if (callback == NULL){ 157 log_error("hfp_ag_register_packet_handler called with NULL callback"); 158 return; 159 } 160 hfp_callback = callback; 161 hfp_set_callback(callback); 162 } 163 164 static int use_in_band_tone(void){ 165 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 166 } 167 168 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 169 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 170 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 171 return hf && ag; 172 } 173 174 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 175 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 176 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 177 return hf && ag; 178 } 179 180 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 181 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 182 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 183 return hf && ag; 184 } 185 186 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){ 187 if (!name){ 188 name = default_hfp_ag_service_name; 189 } 190 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 191 192 /* 193 * 0x01 – Ability to reject a call 194 * 0x00 – No ability to reject a call 195 */ 196 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 197 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 198 199 // Construct SupportedFeatures for SDP bitmap: 200 // 201 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 202 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 203 // 204 uint16_t sdp_features = supported_features &0x1f; 205 if (supported_features & wide_band_speech){ 206 sdp_features |= 1 << 5; // Wide band speech bit 207 } 208 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 209 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 210 } 211 212 static int hfp_ag_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 213 char buffer[20]; 214 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 215 return send_str_over_rfcomm(cid, buffer); 216 } 217 218 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 219 char buffer[40]; 220 sprintf(buffer, "\r\n%s:%d\r\n\r\nOK\r\n", HFP_SUPPORTED_FEATURES, hfp_supported_features); 221 return send_str_over_rfcomm(cid, buffer); 222 } 223 224 static int hfp_ag_ok(uint16_t cid){ 225 char buffer[10]; 226 sprintf(buffer, "\r\nOK\r\n"); 227 return send_str_over_rfcomm(cid, buffer); 228 } 229 230 static int hfp_ag_ring(uint16_t cid){ 231 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 232 } 233 234 static int hfp_ag_send_clip(uint16_t cid){ 235 char buffer[50]; 236 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 237 return send_str_over_rfcomm(cid, buffer); 238 } 239 240 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 241 char buffer[50]; 242 sprintf(buffer, "\r\n%s: ,\"%s\",%u, , \r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 243 return send_str_over_rfcomm(cid, buffer); 244 } 245 246 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 247 char buffer[50]; 248 sprintf(buffer, "\r\n%s: %s\r\n", HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 249 return send_str_over_rfcomm(cid, buffer); 250 } 251 252 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 253 char buffer[50]; 254 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 255 return send_str_over_rfcomm(cid, buffer); 256 } 257 258 static int hfp_ag_error(uint16_t cid){ 259 char buffer[10]; 260 sprintf(buffer, "\r\nERROR\r\n"); 261 return send_str_over_rfcomm(cid, buffer); 262 } 263 264 static int hfp_ag_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 265 char buffer[20]; 266 sprintf(buffer, "\r\n%s=%d\r\n", HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 267 return send_str_over_rfcomm(cid, buffer); 268 } 269 270 // fast & small implementation for fixed int size 271 static int string_len_for_uint32(uint32_t i){ 272 if (i < 10) return 1; 273 if (i < 100) return 2; 274 if (i < 1000) return 3; 275 if (i < 10000) return 4; 276 if (i < 100000) return 5; 277 if (i < 1000000) return 6; 278 if (i < 10000000) return 7; 279 if (i < 100000000) return 8; 280 if (i < 1000000000) return 9; 281 return 10; 282 } 283 284 // get size for indicator string 285 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 286 // template: ("$NAME",($MIN,$MAX)) 287 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 288 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 289 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 290 } 291 292 // store indicator 293 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer){ 294 sprintf((char *) buffer, "(\"%s\",(%d,%d)),", 295 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 296 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 297 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 298 } 299 300 // structure: header [indicator [comma indicator]] footer 301 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 302 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 303 if (!num_indicators) return 2; 304 return 3 + (num_indicators-1) * 2; 305 } 306 307 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 308 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 309 if (index == 0) { 310 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 311 } 312 index--; 313 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 314 int indicator_index = index >> 1; 315 if ((index & 1) == 0){ 316 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 317 } 318 if (indicator_index == num_indicators - 1){ 319 return 8; // "\r\n\r\nOK\r\n" 320 } 321 return 1; // comma 322 } 323 324 static void hgp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer){ 325 if (index == 0){ 326 *buffer++ = '\r'; 327 *buffer++ = '\n'; 328 int len = strlen(HFP_INDICATOR); 329 memcpy(buffer, HFP_INDICATOR, len); 330 buffer += len; 331 *buffer++ = ':'; 332 return; 333 } 334 index--; 335 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 336 int indicator_index = index >> 1; 337 if ((index & 1) == 0){ 338 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer); 339 return; 340 } 341 if (indicator_index == num_indicators-1){ 342 memcpy(buffer, "\r\n\r\nOK\r\n", 8); 343 return; 344 } 345 *buffer = ','; 346 } 347 348 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 349 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 350 int i; 351 int offset = 0; 352 for (i = 0; i < hfp_generic_status_indicators_nr-1; i++) { 353 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 354 } 355 if (i < hfp_generic_status_indicators_nr){ 356 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 357 } 358 return offset; 359 } 360 361 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 362 if (buffer_size < hfp_generic_status_indicators_nr * 3) return 0; 363 int i; 364 int offset = 0; 365 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 366 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); 367 } 368 return offset; 369 } 370 371 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 372 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 373 int i; 374 int offset = 0; 375 for (i = 0; i < hfp_ag_indicators_nr-1; i++) { 376 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 377 } 378 if (i<hfp_ag_indicators_nr){ 379 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 380 } 381 return offset; 382 } 383 384 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 385 if (buffer_size < hfp_ag_call_hold_services_nr * 3) return 0; 386 int i; 387 int offset = snprintf(buffer, buffer_size, "("); 388 for (i = 0; i < hfp_ag_call_hold_services_nr-1; i++) { 389 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 390 } 391 if (i<hfp_ag_call_hold_services_nr){ 392 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 393 } 394 return offset; 395 } 396 397 static int hfp_ag_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 398 int start_segment, int num_segments, 399 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 400 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer)){ 401 402 // assumes: can send now == true 403 // assumes: num segments > 0 404 // assumes: individual segments are smaller than MTU 405 rfcomm_reserve_packet_buffer(); 406 int mtu = rfcomm_get_max_frame_size(cid); 407 uint8_t * data = rfcomm_get_outgoing_buffer(); 408 int offset = 0; 409 int segment = start_segment; 410 while (segment < num_segments){ 411 int segment_len = get_segment_len(hfp_connection, segment); 412 if (offset + segment_len > mtu) break; 413 // append segement 414 store_segment(hfp_connection, segment, data+offset); 415 offset += segment_len; 416 segment++; 417 } 418 rfcomm_send_prepared(cid, offset); 419 return segment; 420 } 421 422 // returns next segment to store 423 static int hfp_ag_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 424 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 425 return hfp_ag_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 426 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 427 } 428 429 static int hfp_ag_retrieve_indicators_status_cmd(uint16_t cid){ 430 char buffer[40]; 431 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_INDICATOR); 432 offset += hfp_ag_indicators_status_join(buffer+offset, sizeof(buffer)-offset); 433 434 buffer[offset] = 0; 435 436 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 437 buffer[offset] = 0; 438 return send_str_over_rfcomm(cid, buffer); 439 } 440 441 static int hfp_ag_set_indicator_status_update_cmd(uint16_t cid, uint8_t activate){ 442 UNUSED(activate); 443 444 // AT\r\n%s:3,0,0,%d\r\n 445 return hfp_ag_ok(cid); 446 } 447 448 449 static int hfp_ag_retrieve_can_hold_call_cmd(uint16_t cid){ 450 char buffer[40]; 451 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 452 offset += hfp_ag_call_services_join(buffer+offset, sizeof(buffer)-offset); 453 454 buffer[offset] = 0; 455 456 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 457 buffer[offset] = 0; 458 return send_str_over_rfcomm(cid, buffer); 459 } 460 461 462 static int hfp_ag_list_supported_generic_status_indicators_cmd(uint16_t cid){ 463 return hfp_ag_ok(cid); 464 } 465 466 static int hfp_ag_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 467 char buffer[40]; 468 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 469 offset += hfp_hf_indicators_join(buffer+offset, sizeof(buffer)-offset); 470 471 buffer[offset] = 0; 472 473 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ")\r\n\r\nOK\r\n"); 474 buffer[offset] = 0; 475 return send_str_over_rfcomm(cid, buffer); 476 } 477 478 static int hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 479 char buffer[40]; 480 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer)); 481 482 buffer[offset] = 0; 483 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 484 buffer[offset] = 0; 485 return send_str_over_rfcomm(cid, buffer); 486 } 487 488 static int hfp_ag_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 489 char buffer[20]; 490 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 491 return send_str_over_rfcomm(cid, buffer); 492 } 493 494 static int hfp_ag_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 495 char buffer[40]; 496 if (strlen(op.name) == 0){ 497 sprintf(buffer, "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 498 } else { 499 sprintf(buffer, "\r\n%s:%d,%d,%s\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format, op.name); 500 } 501 return send_str_over_rfcomm(cid, buffer); 502 } 503 504 505 static int hfp_ag_cmd_suggest_codec(uint16_t cid, uint8_t codec){ 506 char buffer[30]; 507 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CONFIRM_COMMON_CODEC, codec); 508 return send_str_over_rfcomm(cid, buffer); 509 } 510 511 static int hfp_ag_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 512 char buffer[30]; 513 sprintf(buffer, "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 514 return send_str_over_rfcomm(cid, buffer); 515 } 516 517 static int hfp_ag_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 518 char buffer[30]; 519 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_SPEAKER_GAIN, gain); 520 return send_str_over_rfcomm(cid, buffer); 521 } 522 523 static int hfp_ag_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 524 char buffer[30]; 525 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_MICROPHONE_GAIN, gain); 526 return send_str_over_rfcomm(cid, buffer); 527 } 528 529 static int hfp_ag_set_response_and_hold(uint16_t cid, int state){ 530 char buffer[30]; 531 sprintf(buffer, "\r\n%s: %d\r\n", HFP_RESPONSE_AND_HOLD, state); 532 return send_str_over_rfcomm(cid, buffer); 533 } 534 535 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 536 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 537 538 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 539 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 540 return HFP_CODEC_MSBC; 541 } 542 } 543 return HFP_CODEC_CVSD; 544 } 545 546 static void hfp_init_link_settings(hfp_connection_t * hfp_connection){ 547 // determine highest possible link setting 548 hfp_connection->link_setting = HFP_LINK_SETTINGS_D1; 549 // anything else requires eSCO support on both sides 550 if (hci_extended_sco_link_supported() && hci_remote_esco_supported(hfp_connection->acl_handle)){ 551 switch (hfp_connection->negotiated_codec){ 552 case HFP_CODEC_CVSD: 553 hfp_connection->link_setting = HFP_LINK_SETTINGS_S3; 554 if ((hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) 555 && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4))){ 556 hfp_connection->link_setting = HFP_LINK_SETTINGS_S4; 557 } 558 break; 559 case HFP_CODEC_MSBC: 560 hfp_connection->link_setting = HFP_LINK_SETTINGS_T2; 561 break; 562 default: 563 break; 564 } 565 } 566 log_info("hfp_init_link_settings: %u", hfp_connection->link_setting); 567 } 568 569 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 570 /* events ( == commands): 571 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 572 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 573 hf_trigger_codec_connection_setup == received BCC 574 ag_trigger_codec_connection_setup == received from AG to send BCS 575 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 576 */ 577 578 switch (hfp_connection->codecs_state){ 579 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 580 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 581 break; 582 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 583 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 584 break; 585 default: 586 break; 587 } 588 589 // printf(" -> State machine: CC\n"); 590 591 switch (hfp_connection->command){ 592 case HFP_CMD_AVAILABLE_CODECS: 593 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 594 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 595 hfp_ag_ok(hfp_connection->rfcomm_cid); 596 return 1; 597 } 598 599 switch (hfp_connection->codecs_state){ 600 case HFP_CODECS_AG_SENT_COMMON_CODEC: 601 case HFP_CODECS_EXCHANGED: 602 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 603 break; 604 default: 605 break; 606 } 607 hfp_ag_ok(hfp_connection->rfcomm_cid); 608 return 1; 609 610 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 611 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 612 hfp_ag_ok(hfp_connection->rfcomm_cid); 613 return 1; 614 615 case HFP_CMD_AG_SEND_COMMON_CODEC: 616 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 617 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 618 hfp_ag_cmd_suggest_codec(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 619 return 1; 620 621 case HFP_CMD_HF_CONFIRMED_CODEC: 622 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 623 hfp_connection->codecs_state = HFP_CODECS_ERROR; 624 hfp_ag_error(hfp_connection->rfcomm_cid); 625 return 1; 626 } 627 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 628 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 629 log_info("hfp: codec confirmed: %s", hfp_connection->negotiated_codec == HFP_CODEC_MSBC ? "mSBC" : "CVSD"); 630 hfp_ag_ok(hfp_connection->rfcomm_cid); 631 // now, pick link settings 632 hfp_init_link_settings(hfp_connection); 633 return 1; 634 default: 635 break; 636 } 637 return 0; 638 } 639 640 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 641 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 642 hfp_emit_slc_connection_event(hfp_callback, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 643 644 // if active call exist, set per-hfp_connection state active, too (when audio is on) 645 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 646 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 647 } 648 // if AG is ringing, also start ringing on the HF 649 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS && 650 hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 651 hfp_ag_hf_start_ringing(hfp_connection); 652 } 653 } 654 655 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 656 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 657 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 658 int done = 0; 659 switch(hfp_connection->command){ 660 case HFP_CMD_SUPPORTED_FEATURES: 661 switch(hfp_connection->state){ 662 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 663 case HFP_EXCHANGE_SUPPORTED_FEATURES: 664 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 665 if (has_codec_negotiation_feature(hfp_connection)){ 666 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 667 } else { 668 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 669 } 670 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 671 return 1; 672 default: 673 break; 674 } 675 break; 676 case HFP_CMD_AVAILABLE_CODECS: 677 done = codecs_exchange_state_machine(hfp_connection); 678 679 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 680 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 681 } 682 return done; 683 684 case HFP_CMD_RETRIEVE_AG_INDICATORS: 685 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 686 // HF requested AG Indicators and we did expect it 687 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 688 // continue below in state switch 689 } 690 break; 691 692 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 693 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 694 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 695 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 696 return 1; 697 698 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 699 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 700 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 701 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 702 } else if (has_hf_indicators_feature(hfp_connection)){ 703 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 704 } else { 705 hfp_ag_slc_established(hfp_connection); 706 } 707 hfp_ag_set_indicator_status_update_cmd(hfp_connection->rfcomm_cid, 1); 708 return 1; 709 710 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 711 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 712 if (has_hf_indicators_feature(hfp_connection)){ 713 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 714 } 715 hfp_ag_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 716 if (!has_hf_indicators_feature(hfp_connection)){ 717 hfp_ag_slc_established(hfp_connection); 718 } 719 return 1; 720 721 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 722 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 723 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 724 hfp_ag_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 725 return 1; 726 727 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 728 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 729 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 730 hfp_ag_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 731 return 1; 732 733 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 734 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 735 hfp_ag_slc_established(hfp_connection); 736 hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 737 return 1; 738 default: 739 break; 740 } 741 742 switch (hfp_connection->state){ 743 case HFP_RETRIEVE_INDICATORS: { 744 int next_segment = hfp_ag_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 745 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 746 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 747 if (next_segment < num_segments){ 748 // prepare sending of next segment 749 hfp_connection->send_ag_indicators_segment = next_segment; 750 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 751 } else { 752 // done, go to next state 753 hfp_connection->send_ag_indicators_segment = 0; 754 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 755 } 756 return 1; 757 } 758 default: 759 break; 760 } 761 762 return done; 763 } 764 765 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 766 767 int done = codecs_exchange_state_machine(hfp_connection); 768 if (done) return done; 769 770 switch(hfp_connection->command){ 771 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 772 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 773 hfp_ag_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 774 return 1; 775 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 776 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 777 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 778 hfp_ag_ok(hfp_connection->rfcomm_cid); 779 hfp_ag_setup_audio_connection(hfp_connection); 780 } else { 781 hfp_ag_error(hfp_connection->rfcomm_cid); 782 } 783 return 1; 784 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 785 hfp_ag_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 786 return 1; 787 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 788 hfp_ag_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 789 return 1; 790 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 791 if (hfp_connection->network_operator.format != 0){ 792 hfp_ag_error(hfp_connection->rfcomm_cid); 793 } else { 794 hfp_ag_ok(hfp_connection->rfcomm_cid); 795 } 796 return 1; 797 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 798 hfp_ag_ok(hfp_connection->rfcomm_cid); 799 return 1; 800 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 801 if (hfp_connection->extended_audio_gateway_error){ 802 hfp_connection->extended_audio_gateway_error = 0; 803 hfp_ag_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 804 return 1; 805 } 806 break; 807 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 808 hfp_ag_ok(hfp_connection->rfcomm_cid); 809 return 1; 810 default: 811 break; 812 } 813 return 0; 814 } 815 816 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 817 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 818 hfp_connection->state > HFP_W2_DISCONNECT_SCO) return 0; 819 820 821 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->release_audio_connection){ 822 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 823 hfp_connection->release_audio_connection = 0; 824 gap_disconnect(hfp_connection->sco_handle); 825 return 1; 826 } 827 828 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 829 830 // run codecs exchange 831 int done = codecs_exchange_state_machine(hfp_connection); 832 if (done) return done; 833 834 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return done; 835 if (hfp_connection->establish_audio_connection){ 836 hfp_connection->state = HFP_W4_SCO_CONNECTED; 837 hfp_connection->establish_audio_connection = 0; 838 hfp_setup_synchronous_connection(hfp_connection); 839 return 1; 840 } 841 return 0; 842 } 843 844 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 845 btstack_linked_list_iterator_t it; 846 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 847 848 while (btstack_linked_list_iterator_has_next(&it)){ 849 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 850 if ( & hfp_connection->hfp_timeout == ts) { 851 return hfp_connection; 852 } 853 } 854 return NULL; 855 } 856 857 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 858 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 859 if (!hfp_connection) return; 860 861 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 862 hfp_connection->ag_ring = 1; 863 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 864 865 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 866 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 867 868 hfp_run_for_context(hfp_connection); 869 } 870 871 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 872 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 873 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 874 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 875 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 876 } 877 878 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 879 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 880 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 881 } 882 883 // 884 // transitition implementations for hfp_ag_call_state_machine 885 // 886 887 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 888 if (use_in_band_tone()){ 889 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 890 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 891 } else { 892 hfp_timeout_start(hfp_connection); 893 hfp_connection->ag_ring = 1; 894 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 895 hfp_connection->call_state = HFP_CALL_RINGING; 896 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 897 } 898 } 899 900 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 901 hfp_connection->ag_ring = 0; 902 hfp_connection->ag_send_clip = 0; 903 hfp_timeout_stop(hfp_connection); 904 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_STOP_RINGINIG); 905 } 906 907 static void hfp_ag_trigger_incoming_call(void){ 908 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 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 if (hfp_connection->call_state == HFP_CALL_IDLE){ 917 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 918 hfp_ag_hf_start_ringing(hfp_connection); 919 } 920 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 921 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 922 } 923 hfp_run_for_context(hfp_connection); 924 } 925 } 926 927 static void hfp_ag_transfer_callsetup_state(void){ 928 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 929 if (indicator_index < 0) return; 930 931 btstack_linked_list_iterator_t it; 932 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 933 while (btstack_linked_list_iterator_has_next(&it)){ 934 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 935 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 936 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 937 hfp_run_for_context(hfp_connection); 938 } 939 } 940 941 static void hfp_ag_transfer_call_state(void){ 942 int indicator_index = get_ag_indicator_index_for_name("call"); 943 if (indicator_index < 0) return; 944 945 btstack_linked_list_iterator_t it; 946 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 947 while (btstack_linked_list_iterator_has_next(&it)){ 948 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 949 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 950 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 951 hfp_run_for_context(hfp_connection); 952 } 953 } 954 955 static void hfp_ag_transfer_callheld_state(void){ 956 int indicator_index = get_ag_indicator_index_for_name("callheld"); 957 if (indicator_index < 0) return; 958 959 btstack_linked_list_iterator_t it; 960 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 961 while (btstack_linked_list_iterator_has_next(&it)){ 962 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 963 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 964 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 965 hfp_run_for_context(hfp_connection); 966 } 967 } 968 969 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 970 971 int call_indicator_index = get_ag_indicator_index_for_name("call"); 972 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 973 974 btstack_linked_list_iterator_t it; 975 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 976 while (btstack_linked_list_iterator_has_next(&it)){ 977 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 978 if (hfp_connection->call_state != HFP_CALL_RINGING && 979 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 980 981 hfp_ag_hf_stop_ringing(hfp_connection); 982 if (hfp_connection == source){ 983 hfp_connection->ok_pending = 1; 984 985 if (use_in_band_tone()){ 986 hfp_connection->call_state = HFP_CALL_ACTIVE; 987 } else { 988 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 989 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 990 } 991 992 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 993 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 994 995 } else { 996 hfp_connection->call_state = HFP_CALL_IDLE; 997 } 998 hfp_run_for_context(hfp_connection); 999 } 1000 } 1001 1002 static void hfp_ag_ag_accept_call(void){ 1003 1004 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1005 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1006 1007 btstack_linked_list_iterator_t it; 1008 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1009 while (btstack_linked_list_iterator_has_next(&it)){ 1010 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1011 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 1012 1013 hfp_ag_hf_stop_ringing(hfp_connection); 1014 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1015 1016 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1017 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1018 1019 hfp_run_for_context(hfp_connection); 1020 break; // only single 1021 } 1022 } 1023 1024 static void hfp_ag_trigger_reject_call(void){ 1025 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1026 btstack_linked_list_iterator_t it; 1027 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1028 while (btstack_linked_list_iterator_has_next(&it)){ 1029 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1030 if (connection->call_state != HFP_CALL_RINGING && 1031 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1032 hfp_ag_hf_stop_ringing(connection); 1033 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1034 connection->call_state = HFP_CALL_IDLE; 1035 hfp_run_for_context(connection); 1036 } 1037 } 1038 1039 static void hfp_ag_trigger_terminate_call(void){ 1040 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1041 1042 btstack_linked_list_iterator_t it; 1043 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1044 while (btstack_linked_list_iterator_has_next(&it)){ 1045 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1046 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1047 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1048 hfp_connection->call_state = HFP_CALL_IDLE; 1049 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1050 hfp_connection->release_audio_connection = 1; 1051 hfp_run_for_context(hfp_connection); 1052 } 1053 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_TERMINATED); 1054 } 1055 1056 static void hfp_ag_set_callsetup_indicator(void){ 1057 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1058 if (!indicator){ 1059 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1060 return; 1061 }; 1062 indicator->status = hfp_gsm_callsetup_status(); 1063 } 1064 1065 static void hfp_ag_set_callheld_indicator(void){ 1066 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1067 if (!indicator){ 1068 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1069 return; 1070 }; 1071 indicator->status = hfp_gsm_callheld_status(); 1072 } 1073 1074 static void hfp_ag_set_call_indicator(void){ 1075 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1076 if (!indicator){ 1077 log_error("hfp_ag_set_call_state: call indicator is missing"); 1078 return; 1079 }; 1080 indicator->status = hfp_gsm_call_status(); 1081 } 1082 1083 static void hfp_ag_stop_ringing(void){ 1084 btstack_linked_list_iterator_t it; 1085 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1086 while (btstack_linked_list_iterator_has_next(&it)){ 1087 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1088 if (hfp_connection->call_state != HFP_CALL_RINGING && 1089 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1090 hfp_ag_hf_stop_ringing(hfp_connection); 1091 } 1092 } 1093 1094 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1095 btstack_linked_list_iterator_t it; 1096 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1097 while (btstack_linked_list_iterator_has_next(&it)){ 1098 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1099 if (hfp_connection->call_state == call_state) return hfp_connection; 1100 } 1101 return NULL; 1102 } 1103 1104 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1105 btstack_linked_list_iterator_t it; 1106 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1107 while (btstack_linked_list_iterator_has_next(&it)){ 1108 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1109 hfp_connection->send_response_and_hold_status = state + 1; 1110 } 1111 } 1112 1113 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1114 int indicator_index; 1115 switch (hfp_connection->call_state){ 1116 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1117 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1118 // we got event: audio hfp_connection established 1119 hfp_timeout_start(hfp_connection); 1120 hfp_connection->ag_ring = 1; 1121 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1122 hfp_connection->call_state = HFP_CALL_RINGING; 1123 hfp_connection->call_state = HFP_CALL_RINGING; 1124 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 1125 break; 1126 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1127 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1128 // we got event: audio hfp_connection established 1129 hfp_connection->call_state = HFP_CALL_ACTIVE; 1130 break; 1131 case HFP_CALL_W2_SEND_CALL_WAITING: 1132 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1133 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1134 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1135 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1136 break; 1137 default: 1138 break; 1139 } 1140 return 0; 1141 } 1142 // hfp_connection is used to identify originating HF 1143 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1144 int indicator_index; 1145 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1146 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1147 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1148 1149 //printf("hfp_ag_call_sm event %d \n", event); 1150 switch (event){ 1151 case HFP_AG_INCOMING_CALL: 1152 switch (hfp_gsm_call_status()){ 1153 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1154 switch (hfp_gsm_callsetup_status()){ 1155 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1156 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1157 hfp_ag_set_callsetup_indicator(); 1158 hfp_ag_trigger_incoming_call(); 1159 log_info("AG rings"); 1160 break; 1161 default: 1162 break; 1163 } 1164 break; 1165 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1166 switch (hfp_gsm_callsetup_status()){ 1167 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1168 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1169 hfp_ag_set_callsetup_indicator(); 1170 hfp_ag_trigger_incoming_call(); 1171 log_info("AG call waiting"); 1172 break; 1173 default: 1174 break; 1175 } 1176 break; 1177 } 1178 break; 1179 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1180 switch (hfp_gsm_call_status()){ 1181 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1182 switch (hfp_gsm_callsetup_status()){ 1183 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1184 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1185 hfp_ag_set_call_indicator(); 1186 hfp_ag_set_callsetup_indicator(); 1187 hfp_ag_ag_accept_call(); 1188 log_info("AG answers call, accept call by GSM"); 1189 break; 1190 default: 1191 break; 1192 } 1193 break; 1194 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1195 switch (hfp_gsm_callsetup_status()){ 1196 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1197 log_info("AG: current call is placed on hold, incoming call gets active"); 1198 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1199 hfp_ag_set_callsetup_indicator(); 1200 hfp_ag_set_callheld_indicator(); 1201 hfp_ag_transfer_callsetup_state(); 1202 hfp_ag_transfer_callheld_state(); 1203 break; 1204 default: 1205 break; 1206 } 1207 break; 1208 } 1209 break; 1210 1211 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1212 switch (hfp_gsm_call_status()){ 1213 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1214 switch (hfp_gsm_callheld_status()){ 1215 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1216 log_info("AG: joining held call with active call"); 1217 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1218 hfp_ag_set_callheld_indicator(); 1219 hfp_ag_transfer_callheld_state(); 1220 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1221 break; 1222 default: 1223 break; 1224 } 1225 break; 1226 default: 1227 break; 1228 } 1229 break; 1230 1231 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1232 switch (hfp_gsm_call_status()){ 1233 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1234 switch (hfp_gsm_callsetup_status()){ 1235 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1236 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1237 hfp_ag_set_callsetup_indicator(); 1238 hfp_ag_set_call_indicator(); 1239 hfp_ag_hf_accept_call(hfp_connection); 1240 log_info("HF answers call, accept call by GSM"); 1241 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_ANSWERED); 1242 break; 1243 default: 1244 break; 1245 } 1246 break; 1247 default: 1248 break; 1249 } 1250 break; 1251 1252 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1253 switch (hfp_gsm_call_status()){ 1254 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1255 switch (hfp_gsm_callsetup_status()){ 1256 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1257 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1258 hfp_ag_response_and_hold_active = 1; 1259 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1260 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1261 // as with regualr call 1262 hfp_ag_set_call_indicator(); 1263 hfp_ag_set_callsetup_indicator(); 1264 hfp_ag_ag_accept_call(); 1265 log_info("AG response and hold - hold by AG"); 1266 break; 1267 default: 1268 break; 1269 } 1270 break; 1271 default: 1272 break; 1273 } 1274 break; 1275 1276 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1277 switch (hfp_gsm_call_status()){ 1278 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1279 switch (hfp_gsm_callsetup_status()){ 1280 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1281 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1282 hfp_ag_response_and_hold_active = 1; 1283 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1284 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1285 // as with regualr call 1286 hfp_ag_set_call_indicator(); 1287 hfp_ag_set_callsetup_indicator(); 1288 hfp_ag_hf_accept_call(hfp_connection); 1289 log_info("AG response and hold - hold by HF"); 1290 break; 1291 default: 1292 break; 1293 } 1294 break; 1295 default: 1296 break; 1297 } 1298 break; 1299 1300 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1301 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1302 if (!hfp_ag_response_and_hold_active) break; 1303 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1304 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1305 hfp_ag_response_and_hold_active = 0; 1306 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1307 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1308 log_info("Held Call accepted and active"); 1309 break; 1310 1311 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1312 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1313 if (!hfp_ag_response_and_hold_active) break; 1314 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1315 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1316 hfp_ag_response_and_hold_active = 0; 1317 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1318 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1319 // from terminate by ag 1320 hfp_ag_set_call_indicator(); 1321 hfp_ag_trigger_terminate_call(); 1322 break; 1323 1324 case HFP_AG_TERMINATE_CALL_BY_HF: 1325 switch (hfp_gsm_call_status()){ 1326 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1327 switch (hfp_gsm_callsetup_status()){ 1328 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1329 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1330 hfp_ag_set_callsetup_indicator(); 1331 hfp_ag_transfer_callsetup_state(); 1332 hfp_ag_trigger_reject_call(); 1333 log_info("HF Rejected Incoming call, AG terminate call"); 1334 break; 1335 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1336 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1337 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1338 hfp_ag_set_callsetup_indicator(); 1339 hfp_ag_transfer_callsetup_state(); 1340 log_info("AG terminate outgoing call process"); 1341 break; 1342 default: 1343 break; 1344 } 1345 break; 1346 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1347 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1348 hfp_ag_set_call_indicator(); 1349 hfp_ag_transfer_call_state(); 1350 hfp_connection->call_state = HFP_CALL_IDLE; 1351 log_info("AG terminate call"); 1352 break; 1353 } 1354 break; 1355 1356 case HFP_AG_TERMINATE_CALL_BY_AG: 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_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1362 hfp_ag_set_callsetup_indicator(); 1363 hfp_ag_trigger_reject_call(); 1364 log_info("AG Rejected Incoming call, AG terminate call"); 1365 break; 1366 default: 1367 break; 1368 } 1369 break; 1370 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1371 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1372 hfp_ag_set_callsetup_indicator(); 1373 hfp_ag_set_call_indicator(); 1374 hfp_ag_trigger_terminate_call(); 1375 log_info("AG terminate call"); 1376 break; 1377 default: 1378 break; 1379 } 1380 break; 1381 case HFP_AG_CALL_DROPPED: 1382 switch (hfp_gsm_call_status()){ 1383 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1384 switch (hfp_gsm_callsetup_status()){ 1385 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1386 hfp_ag_stop_ringing(); 1387 log_info("Incoming call interrupted"); 1388 break; 1389 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1390 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1391 log_info("Outgoing call interrupted\n"); 1392 log_info("AG notify call dropped\n"); 1393 break; 1394 default: 1395 break; 1396 } 1397 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1398 hfp_ag_set_callsetup_indicator(); 1399 hfp_ag_transfer_callsetup_state(); 1400 break; 1401 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1402 if (hfp_ag_response_and_hold_active) { 1403 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1404 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1405 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1406 } 1407 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1408 hfp_ag_set_callsetup_indicator(); 1409 hfp_ag_set_call_indicator(); 1410 hfp_ag_trigger_terminate_call(); 1411 log_info("AG notify call dropped"); 1412 break; 1413 default: 1414 break; 1415 } 1416 break; 1417 1418 case HFP_AG_OUTGOING_CALL_INITIATED: 1419 // directly reject call if number of free slots is exceeded 1420 if (!hfp_gsm_call_possible()){ 1421 hfp_connection->send_error = 1; 1422 hfp_run_for_context(hfp_connection); 1423 break; 1424 } 1425 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1426 1427 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1428 1429 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1430 break; 1431 1432 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1433 // directly reject call if number of free slots is exceeded 1434 if (!hfp_gsm_call_possible()){ 1435 hfp_connection->send_error = 1; 1436 hfp_run_for_context(hfp_connection); 1437 break; 1438 } 1439 1440 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1441 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1442 1443 log_info("Redial last number"); 1444 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1445 1446 if (strlen(last_dialed_number) > 0){ 1447 log_info("Last number exists: accept call"); 1448 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1449 } else { 1450 log_info("log_infoLast number missing: reject call"); 1451 hfp_ag_outgoing_call_rejected(); 1452 } 1453 break; 1454 } 1455 case HFP_AG_OUTGOING_CALL_REJECTED: 1456 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1457 if (!hfp_connection){ 1458 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1459 break; 1460 } 1461 1462 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1463 hfp_connection->call_state = HFP_CALL_IDLE; 1464 hfp_connection->send_error = 1; 1465 hfp_run_for_context(hfp_connection); 1466 break; 1467 1468 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1469 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1470 if (!hfp_connection){ 1471 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1472 break; 1473 } 1474 1475 hfp_connection->ok_pending = 1; 1476 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1477 1478 // trigger callsetup to be 1479 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1480 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1481 1482 hfp_ag_set_callsetup_indicator(); 1483 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1484 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1485 1486 // put current call on hold if active 1487 if (put_call_on_hold){ 1488 log_info("AG putting current call on hold for new outgoing calllog_info"); 1489 hfp_ag_set_callheld_indicator(); 1490 indicator_index = get_ag_indicator_index_for_name("callheld"); 1491 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1492 } 1493 1494 // start audio if needed 1495 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1496 break; 1497 } 1498 case HFP_AG_OUTGOING_CALL_RINGING: 1499 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1500 if (!hfp_connection){ 1501 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1502 break; 1503 } 1504 1505 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1506 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1507 hfp_ag_set_callsetup_indicator(); 1508 hfp_ag_transfer_callsetup_state(); 1509 break; 1510 1511 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1512 // get outgoing call 1513 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1514 if (!hfp_connection){ 1515 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1516 } 1517 if (!hfp_connection){ 1518 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1519 break; 1520 } 1521 1522 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1523 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1524 hfp_connection->call_state = HFP_CALL_ACTIVE; 1525 hfp_ag_set_callsetup_indicator(); 1526 hfp_ag_set_call_indicator(); 1527 hfp_ag_transfer_call_state(); 1528 hfp_ag_transfer_callsetup_state(); 1529 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1530 hfp_ag_set_callheld_indicator(); 1531 hfp_ag_transfer_callheld_state(); 1532 } 1533 break; 1534 } 1535 1536 case HFP_AG_CALL_HOLD_USER_BUSY: 1537 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1538 hfp_ag_set_callsetup_indicator(); 1539 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1540 hfp_connection->call_state = HFP_CALL_ACTIVE; 1541 log_info("AG: Call Waiting, User Busy"); 1542 break; 1543 1544 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1545 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1546 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1547 1548 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1549 if (call_held || call_setup_in_progress){ 1550 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1551 1552 } 1553 1554 if (call_setup_in_progress){ 1555 log_info("AG: Call Dropped, Accept new call"); 1556 hfp_ag_set_callsetup_indicator(); 1557 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1558 } else { 1559 log_info("AG: Call Dropped, Resume held call"); 1560 } 1561 if (call_held){ 1562 hfp_ag_set_callheld_indicator(); 1563 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1564 } 1565 1566 hfp_connection->call_state = HFP_CALL_ACTIVE; 1567 break; 1568 } 1569 1570 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1571 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1572 // only update if callsetup changed 1573 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1574 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1575 1576 if (call_setup_in_progress){ 1577 log_info("AG: Call on Hold, Accept new call"); 1578 hfp_ag_set_callsetup_indicator(); 1579 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1580 } else { 1581 log_info("AG: Swap calls"); 1582 } 1583 1584 hfp_ag_set_callheld_indicator(); 1585 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1586 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1587 hfp_connection->call_state = HFP_CALL_ACTIVE; 1588 break; 1589 } 1590 1591 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1592 // Adds a held call to the conversation. 1593 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1594 log_info("AG: Join 3-way-call"); 1595 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1596 hfp_ag_set_callheld_indicator(); 1597 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1598 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1599 } 1600 hfp_connection->call_state = HFP_CALL_ACTIVE; 1601 break; 1602 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1603 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1604 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1605 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1606 hfp_ag_set_call_indicator(); 1607 hfp_ag_set_callheld_indicator(); 1608 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1609 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1610 hfp_connection->call_state = HFP_CALL_IDLE; 1611 break; 1612 1613 default: 1614 break; 1615 } 1616 1617 1618 } 1619 1620 1621 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1622 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1623 if (!active_call) return; 1624 1625 int idx = active_call->index; 1626 hfp_enhanced_call_dir_t dir = active_call->direction; 1627 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1628 hfp_enhanced_call_mode_t mode = active_call->mode; 1629 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1630 uint8_t type = active_call->clip_type; 1631 char * number = active_call->clip_number; 1632 1633 char buffer[100]; 1634 // TODO: check length of a buffer, to fit the MTU 1635 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1636 if (number){ 1637 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ", \"%s\",%u", number, type); 1638 } 1639 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1640 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, 1641 mode, mpty, type, number); 1642 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1643 } 1644 1645 static void hfp_run_for_context(hfp_connection_t *hfp_connection){ 1646 1647 // log_info("hfp_run_for_context %p", hfp_connection); 1648 1649 if (!hfp_connection) return; 1650 1651 if (!hfp_connection->rfcomm_cid) return; 1652 1653 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1654 log_info("hfp_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1655 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1656 return; 1657 } 1658 1659 if (hfp_connection->send_status_of_current_calls){ 1660 hfp_connection->ok_pending = 0; 1661 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1662 hfp_connection->next_call_index++; 1663 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1664 } else { 1665 hfp_connection->next_call_index = 0; 1666 hfp_connection->ok_pending = 1; 1667 hfp_connection->send_status_of_current_calls = 0; 1668 } 1669 return; 1670 } 1671 1672 if (hfp_connection->ag_notify_incoming_call_waiting){ 1673 hfp_connection->ag_notify_incoming_call_waiting = 0; 1674 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1675 return; 1676 } 1677 1678 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1679 hfp_connection->ok_pending = 0; 1680 hfp_connection->send_error = 0; 1681 hfp_connection->command = HFP_CMD_NONE; 1682 hfp_ag_error(hfp_connection->rfcomm_cid); 1683 return; 1684 } 1685 1686 if (hfp_connection->send_error){ 1687 hfp_connection->send_error = 0; 1688 hfp_connection->command = HFP_CMD_NONE; 1689 hfp_ag_error(hfp_connection->rfcomm_cid); 1690 return; 1691 } 1692 1693 // note: before update AG indicators and ok_pending 1694 if (hfp_connection->send_response_and_hold_status){ 1695 int status = hfp_connection->send_response_and_hold_status - 1; 1696 hfp_connection->send_response_and_hold_status = 0; 1697 hfp_ag_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1698 return; 1699 } 1700 1701 if (hfp_connection->ok_pending){ 1702 hfp_connection->ok_pending = 0; 1703 hfp_connection->command = HFP_CMD_NONE; 1704 hfp_ag_ok(hfp_connection->rfcomm_cid); 1705 return; 1706 } 1707 1708 // update AG indicators 1709 if (hfp_connection->ag_indicators_status_update_bitmap){ 1710 int i; 1711 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1712 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1713 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1714 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1715 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1716 break; 1717 } 1718 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1719 return; 1720 } 1721 } 1722 } 1723 1724 if (hfp_connection->ag_ring){ 1725 hfp_connection->ag_ring = 0; 1726 hfp_connection->command = HFP_CMD_NONE; 1727 hfp_ag_ring(hfp_connection->rfcomm_cid); 1728 return; 1729 } 1730 1731 if (hfp_connection->ag_send_clip){ 1732 hfp_connection->ag_send_clip = 0; 1733 hfp_connection->command = HFP_CMD_NONE; 1734 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1735 return; 1736 } 1737 1738 if (hfp_connection->send_phone_number_for_voice_tag){ 1739 hfp_connection->send_phone_number_for_voice_tag = 0; 1740 hfp_connection->command = HFP_CMD_NONE; 1741 hfp_connection->ok_pending = 1; 1742 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1743 return; 1744 } 1745 1746 if (hfp_connection->send_subscriber_number){ 1747 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1748 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1749 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1750 } else { 1751 hfp_connection->send_subscriber_number = 0; 1752 hfp_connection->next_subscriber_number_to_send = 0; 1753 hfp_ag_ok(hfp_connection->rfcomm_cid); 1754 } 1755 hfp_connection->command = HFP_CMD_NONE; 1756 } 1757 1758 if (hfp_connection->send_microphone_gain){ 1759 hfp_connection->send_microphone_gain = 0; 1760 hfp_connection->command = HFP_CMD_NONE; 1761 hfp_ag_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1762 return; 1763 } 1764 1765 if (hfp_connection->send_speaker_gain){ 1766 hfp_connection->send_speaker_gain = 0; 1767 hfp_connection->command = HFP_CMD_NONE; 1768 hfp_ag_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1769 return; 1770 } 1771 1772 if (hfp_connection->send_ag_status_indicators){ 1773 hfp_connection->send_ag_status_indicators = 0; 1774 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1775 return; 1776 } 1777 1778 int done = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1779 if (!done){ 1780 done = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1781 } 1782 1783 if (!done){ 1784 done = call_setup_state_machine(hfp_connection); 1785 } 1786 1787 if (!done){ 1788 done = hfp_ag_run_for_audio_connection(hfp_connection); 1789 } 1790 1791 if (hfp_connection->command == HFP_CMD_NONE && !done){ 1792 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1793 switch(hfp_connection->state){ 1794 case HFP_W2_DISCONNECT_RFCOMM: 1795 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1796 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1797 break; 1798 default: 1799 break; 1800 } 1801 } 1802 if (done){ 1803 hfp_connection->command = HFP_CMD_NONE; 1804 } 1805 // 1806 if (done) { 1807 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1808 } 1809 } 1810 1811 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1812 int i; 1813 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1814 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1815 if (indicator->uuid == number){ 1816 return indicator; 1817 } 1818 } 1819 return NULL; 1820 } 1821 1822 static void hfp_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1823 UNUSED(packet_type); 1824 1825 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1826 if (!hfp_connection) return; 1827 1828 char last_char = packet[size-1]; 1829 packet[size-1] = 0; 1830 log_info("HFP_RX %s", packet); 1831 packet[size-1] = last_char; 1832 1833 int pos; 1834 for (pos = 0; pos < size ; pos++){ 1835 hfp_parse(hfp_connection, packet[pos], 0); 1836 } 1837 hfp_generic_status_indicator_t * indicator; 1838 int value; 1839 switch(hfp_connection->command){ 1840 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1841 if (hfp_ag_response_and_hold_active){ 1842 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1843 } 1844 hfp_connection->ok_pending = 1; 1845 break; 1846 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1847 value = btstack_atoi((char *)&hfp_connection->line_buffer[0]); 1848 log_info("HF Response and Hold: %u", value); 1849 switch(value){ 1850 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1851 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1852 break; 1853 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1854 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1855 break; 1856 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1857 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1858 break; 1859 default: 1860 break; 1861 } 1862 hfp_connection->ok_pending = 1; 1863 break; 1864 case HFP_CMD_HF_INDICATOR_STATUS: 1865 hfp_connection->command = HFP_CMD_NONE; 1866 // find indicator by assigned number 1867 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1868 if (!indicator){ 1869 hfp_connection->send_error = 1; 1870 break; 1871 } 1872 value = btstack_atoi((char *)&hfp_connection->line_buffer[0]); 1873 switch (indicator->uuid){ 1874 case 1: // enhanced security 1875 if (value > 1) { 1876 hfp_connection->send_error = 1; 1877 return; 1878 } 1879 log_info("HF Indicator 'enhanced security' set to %u", value); 1880 break; 1881 case 2: // battery level 1882 if (value > 100){ 1883 hfp_connection->send_error = 1; 1884 return; 1885 } 1886 log_info("HF Indicator 'battery' set to %u", value); 1887 break; 1888 default: 1889 log_info("HF Indicator unknown set to %u", value); 1890 break; 1891 } 1892 hfp_connection->ok_pending = 1; 1893 break; 1894 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1895 // expected by SLC state machine 1896 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1897 hfp_connection->send_ag_indicators_segment = 0; 1898 hfp_connection->send_ag_status_indicators = 1; 1899 break; 1900 case HFP_CMD_LIST_CURRENT_CALLS: 1901 hfp_connection->command = HFP_CMD_NONE; 1902 hfp_connection->next_call_index = 0; 1903 hfp_connection->send_status_of_current_calls = 1; 1904 break; 1905 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1906 if (subscriber_numbers_count == 0){ 1907 hfp_ag_ok(hfp_connection->rfcomm_cid); 1908 break; 1909 } 1910 hfp_connection->next_subscriber_number_to_send = 0; 1911 hfp_connection->send_subscriber_number = 1; 1912 break; 1913 case HFP_CMD_TRANSMIT_DTMF_CODES: 1914 hfp_connection->command = HFP_CMD_NONE; 1915 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &hfp_connection->line_buffer[0]); 1916 break; 1917 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1918 hfp_connection->command = HFP_CMD_NONE; 1919 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1920 break; 1921 case HFP_CMD_TURN_OFF_EC_AND_NR: 1922 hfp_connection->command = HFP_CMD_NONE; 1923 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1924 hfp_connection->ok_pending = 1; 1925 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1926 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1927 } else { 1928 hfp_connection->send_error = 1; 1929 } 1930 break; 1931 case HFP_CMD_CALL_ANSWERED: 1932 hfp_connection->command = HFP_CMD_NONE; 1933 log_info("HFP: ATA"); 1934 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1935 break; 1936 case HFP_CMD_HANG_UP_CALL: 1937 hfp_connection->command = HFP_CMD_NONE; 1938 hfp_connection->ok_pending = 1; 1939 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1940 break; 1941 case HFP_CMD_CALL_HOLD: { 1942 // TODO: fully implement this 1943 log_error("HFP: unhandled call hold type %c", hfp_connection->line_buffer[0]); 1944 hfp_connection->command = HFP_CMD_NONE; 1945 hfp_connection->ok_pending = 1; 1946 hfp_connection->call_index = 0; 1947 1948 if (hfp_connection->line_buffer[1] != '\0'){ 1949 hfp_connection->call_index = btstack_atoi((char *)&hfp_connection->line_buffer[1]); 1950 } 1951 1952 switch (hfp_connection->line_buffer[0]){ 1953 case '0': 1954 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1955 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1956 break; 1957 case '1': 1958 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1959 // Where both a held and a waiting call exist, the above procedures shall apply to the 1960 // waiting call (i.e., not to the held call) in conflicting situation. 1961 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1962 break; 1963 case '2': 1964 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1965 // Where both a held and a waiting call exist, the above procedures shall apply to the 1966 // waiting call (i.e., not to the held call) in conflicting situation. 1967 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1968 break; 1969 case '3': 1970 // Adds a held call to the conversation. 1971 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1972 break; 1973 case '4': 1974 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1975 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1976 break; 1977 default: 1978 break; 1979 } 1980 break; 1981 } 1982 case HFP_CMD_CALL_PHONE_NUMBER: 1983 hfp_connection->command = HFP_CMD_NONE; 1984 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1985 break; 1986 case HFP_CMD_REDIAL_LAST_NUMBER: 1987 hfp_connection->command = HFP_CMD_NONE; 1988 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1989 break; 1990 case HFP_CMD_ENABLE_CLIP: 1991 hfp_connection->command = HFP_CMD_NONE; 1992 hfp_connection->clip_enabled = hfp_connection->line_buffer[8] != '0'; 1993 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1994 hfp_connection->ok_pending = 1; 1995 break; 1996 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1997 hfp_connection->command = HFP_CMD_NONE; 1998 hfp_connection->call_waiting_notification_enabled = hfp_connection->line_buffer[8] != '0'; 1999 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2000 hfp_connection->ok_pending = 1; 2001 break; 2002 case HFP_CMD_SET_SPEAKER_GAIN: 2003 hfp_connection->command = HFP_CMD_NONE; 2004 hfp_connection->ok_pending = 1; 2005 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2006 break; 2007 case HFP_CMD_SET_MICROPHONE_GAIN: 2008 hfp_connection->command = HFP_CMD_NONE; 2009 hfp_connection->ok_pending = 1; 2010 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2011 break; 2012 default: 2013 break; 2014 } 2015 } 2016 2017 static void hfp_run(void){ 2018 btstack_linked_list_iterator_t it; 2019 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2020 while (btstack_linked_list_iterator_has_next(&it)){ 2021 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2022 hfp_run_for_context(hfp_connection); 2023 } 2024 } 2025 2026 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2027 switch (packet_type){ 2028 case RFCOMM_DATA_PACKET: 2029 hfp_handle_rfcomm_data(packet_type, channel, packet, size); 2030 break; 2031 case HCI_EVENT_PACKET: 2032 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2033 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2034 hfp_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2035 return; 2036 } 2037 hfp_handle_hci_event(packet_type, channel, packet, size); 2038 break; 2039 default: 2040 break; 2041 } 2042 2043 hfp_run(); 2044 } 2045 2046 2047 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2048 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2049 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2050 return; 2051 } 2052 int i; 2053 hfp_codecs_nr = codecs_nr; 2054 for (i=0; i < codecs_nr; i++){ 2055 hfp_codecs[i] = codecs[i]; 2056 } 2057 } 2058 2059 void hfp_ag_init_supported_features(uint32_t supported_features){ 2060 hfp_supported_features = supported_features; 2061 } 2062 2063 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2064 hfp_ag_indicators_nr = ag_indicators_nr; 2065 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2066 } 2067 2068 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2069 if (hf_indicators_nr > HFP_MAX_NUM_HF_INDICATORS) return; 2070 hfp_generic_status_indicators_nr = hf_indicators_nr; 2071 memcpy(hfp_generic_status_indicators, hf_indicators, hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2072 } 2073 2074 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2075 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2076 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2077 } 2078 2079 2080 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2081 // register for HCI events 2082 hci_event_callback_registration.callback = &packet_handler; 2083 hci_add_event_handler(&hci_event_callback_registration); 2084 2085 rfcomm_register_service(&packet_handler, rfcomm_channel_nr, 0xffff); 2086 2087 hfp_ag_response_and_hold_active = 0; 2088 subscriber_numbers = NULL; 2089 subscriber_numbers_count = 0; 2090 2091 hfp_set_packet_handler_for_rfcomm_connections(&packet_handler); 2092 2093 hfp_gsm_init(); 2094 } 2095 2096 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2097 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE); 2098 } 2099 2100 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2101 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2102 if (!hfp_connection){ 2103 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2104 return; 2105 } 2106 hfp_release_service_level_connection(hfp_connection); 2107 hfp_run_for_context(hfp_connection); 2108 } 2109 2110 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2111 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2112 if (!hfp_connection){ 2113 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2114 return; 2115 } 2116 hfp_connection->extended_audio_gateway_error = 0; 2117 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2118 return; 2119 } 2120 hfp_connection->extended_audio_gateway_error = error; 2121 hfp_run_for_context(hfp_connection); 2122 } 2123 2124 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2125 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2126 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2127 2128 hfp_connection->establish_audio_connection = 1; 2129 2130 if (!has_codec_negotiation_feature(hfp_connection)){ 2131 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2132 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2133 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2134 // now, pick link settings 2135 hfp_init_link_settings(hfp_connection); 2136 } 2137 2138 switch (hfp_connection->codecs_state){ 2139 case HFP_CODECS_IDLE: 2140 case HFP_CODECS_RECEIVED_LIST: 2141 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2142 case HFP_CODECS_ERROR: 2143 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2144 break; 2145 default: 2146 break; 2147 } 2148 } 2149 2150 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2151 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2152 if (!hfp_connection){ 2153 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2154 return; 2155 } 2156 hfp_connection->establish_audio_connection = 0; 2157 hfp_ag_setup_audio_connection(hfp_connection); 2158 hfp_run_for_context(hfp_connection); 2159 } 2160 2161 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2162 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2163 if (!hfp_connection){ 2164 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2165 return; 2166 } 2167 hfp_release_audio_connection(hfp_connection); 2168 hfp_run_for_context(hfp_connection); 2169 } 2170 2171 /** 2172 * @brief Enable in-band ring tone 2173 */ 2174 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2175 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2176 return; 2177 } 2178 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2179 2180 btstack_linked_list_iterator_t it; 2181 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2182 while (btstack_linked_list_iterator_has_next(&it)){ 2183 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2184 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2185 hfp_run_for_context(hfp_connection); 2186 } 2187 } 2188 2189 /** 2190 * @brief Called from GSM 2191 */ 2192 void hfp_ag_incoming_call(void){ 2193 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2194 } 2195 2196 /** 2197 * @brief number is stored. 2198 */ 2199 void hfp_ag_set_clip(uint8_t type, const char * number){ 2200 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2201 } 2202 2203 void hfp_ag_call_dropped(void){ 2204 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2205 } 2206 2207 // call from AG UI 2208 void hfp_ag_answer_incoming_call(void){ 2209 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2210 } 2211 2212 void hfp_ag_join_held_call(void){ 2213 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2214 } 2215 2216 void hfp_ag_terminate_call(void){ 2217 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2218 } 2219 2220 void hfp_ag_outgoing_call_ringing(void){ 2221 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2222 } 2223 2224 void hfp_ag_outgoing_call_established(void){ 2225 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2226 } 2227 2228 void hfp_ag_outgoing_call_rejected(void){ 2229 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2230 } 2231 2232 void hfp_ag_outgoing_call_accepted(void){ 2233 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2234 } 2235 2236 void hfp_ag_hold_incoming_call(void){ 2237 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2238 } 2239 2240 void hfp_ag_accept_held_incoming_call(void) { 2241 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2242 } 2243 2244 void hfp_ag_reject_held_incoming_call(void){ 2245 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2246 } 2247 2248 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2249 int indicator_index = get_ag_indicator_index_for_name(name); 2250 if (indicator_index < 0) return; 2251 hfp_ag_indicators[indicator_index].status = value; 2252 2253 2254 btstack_linked_list_iterator_t it; 2255 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2256 while (btstack_linked_list_iterator_has_next(&it)){ 2257 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2258 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2259 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2260 continue; 2261 } 2262 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2263 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2264 hfp_run_for_context(hfp_connection); 2265 } 2266 } 2267 2268 void hfp_ag_set_registration_status(int status){ 2269 hfp_ag_set_ag_indicator("service", status); 2270 } 2271 2272 void hfp_ag_set_signal_strength(int strength){ 2273 hfp_ag_set_ag_indicator("signal", strength); 2274 } 2275 2276 void hfp_ag_set_roaming_status(int status){ 2277 hfp_ag_set_ag_indicator("roam", status); 2278 } 2279 2280 void hfp_ag_set_battery_level(int level){ 2281 hfp_ag_set_ag_indicator("battchg", level); 2282 } 2283 2284 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2285 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2286 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2287 if (!hfp_connection){ 2288 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2289 return; 2290 } 2291 2292 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2293 log_info("AG cannot acivate voice recognition - not supported by HF"); 2294 return; 2295 } 2296 2297 if (activate){ 2298 hfp_ag_establish_audio_connection(acl_handle); 2299 } 2300 2301 hfp_connection->ag_activate_voice_recognition = activate; 2302 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2303 hfp_run_for_context(hfp_connection); 2304 } 2305 2306 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2307 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2308 if (!hfp_connection){ 2309 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2310 return; 2311 } 2312 if (hfp_connection->microphone_gain != gain){ 2313 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2314 hfp_connection->microphone_gain = gain; 2315 hfp_connection->send_microphone_gain = 1; 2316 } 2317 hfp_run_for_context(hfp_connection); 2318 } 2319 2320 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2321 hfp_connection_t * hfp_connection = get_hfp_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 if (hfp_connection->speaker_gain != gain){ 2327 hfp_connection->speaker_gain = gain; 2328 hfp_connection->send_speaker_gain = 1; 2329 } 2330 hfp_run_for_context(hfp_connection); 2331 } 2332 2333 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2334 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2335 if (!hfp_connection){ 2336 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2337 return; 2338 } 2339 hfp_ag_set_clip(0, number); 2340 hfp_connection->send_phone_number_for_voice_tag = 1; 2341 } 2342 2343 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2344 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2345 if (!hfp_connection){ 2346 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2347 return; 2348 } 2349 hfp_connection->send_error = 1; 2350 } 2351 2352 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2353 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2354 if (!hfp_connection){ 2355 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2356 return; 2357 } 2358 hfp_connection->ok_pending = 1; 2359 } 2360 2361 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2362 subscriber_numbers = numbers; 2363 subscriber_numbers_count = numbers_count; 2364 } 2365 2366 void hfp_ag_clear_last_dialed_number(void){ 2367 hfp_gsm_clear_last_dialed_number(); 2368 } 2369 2370 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2371 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2372 if (!hfp_connection){ 2373 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2374 return; 2375 } 2376 if (!hfp_connection->call_waiting_notification_enabled) return; 2377 2378 hfp_connection->ag_notify_incoming_call_waiting = 1; 2379 hfp_run_for_context(hfp_connection); 2380 } 2381 2382