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 // ***************************************************************************** 39 // 40 // HFP Audio Gateway (AG) unit 41 // 42 // ***************************************************************************** 43 44 #include "btstack_config.h" 45 46 #include <stdint.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 51 #include "hci_cmd.h" 52 #include "btstack_run_loop.h" 53 54 #include "hci.h" 55 #include "btstack_memory.h" 56 #include "hci_dump.h" 57 #include "l2cap.h" 58 #include "btstack_debug.h" 59 #include "btstack_event.h" 60 #include "classic/core.h" 61 #include "classic/hfp.h" 62 #include "classic/hfp_ag.h" 63 #include "classic/hfp_gsm_model.h" 64 #include "classic/sdp_client_rfcomm.h" 65 #include "classic/sdp_server.h" 66 #include "classic/sdp_util.h" 67 68 // private prototypes 69 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 70 static void hfp_run_for_context(hfp_connection_t *context); 71 static void hfp_ag_setup_audio_connection(hfp_connection_t * connection); 72 static void hfp_ag_hf_start_ringing(hfp_connection_t * context); 73 74 // public prototypes 75 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 76 int get_hfp_generic_status_indicators_nr(void); 77 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 78 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 79 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 80 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 81 82 // gobals 83 static const char default_hfp_ag_service_name[] = "Voice gateway"; 84 85 static uint16_t hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 86 87 static uint8_t hfp_codecs_nr = 0; 88 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 89 90 static int hfp_ag_indicators_nr = 0; 91 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_AG_INDICATORS]; 92 93 static int hfp_generic_status_indicators_nr = 0; 94 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_HF_INDICATORS]; 95 96 static int hfp_ag_call_hold_services_nr = 0; 97 static char *hfp_ag_call_hold_services[6]; 98 static btstack_packet_handler_t hfp_callback; 99 100 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 101 static int hfp_ag_response_and_hold_active = 0; 102 103 // Subcriber information entries 104 static hfp_phone_number_t * subscriber_numbers = NULL; 105 static int subscriber_numbers_count = 0; 106 107 static btstack_packet_callback_registration_t hci_event_callback_registration; 108 static void hfp_run_for_context(hfp_connection_t *hfp_connection); 109 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 110 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection); 111 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection); 112 113 114 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 115 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 116 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 117 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 118 } 119 return hfp_connection->ag_indicators_nr; 120 } 121 122 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 123 // TODO: save only value, and value changed in the hfp_connection? 124 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 125 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 126 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 127 } 128 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 129 } 130 131 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 132 int i; 133 for (i = 0; i < hfp_ag_indicators_nr; i++){ 134 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 135 return &hfp_ag_indicators[i]; 136 } 137 } 138 return NULL; 139 } 140 141 static int get_ag_indicator_index_for_name(const char * name){ 142 int i; 143 for (i = 0; i < hfp_ag_indicators_nr; i++){ 144 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 145 return i; 146 } 147 } 148 return -1; 149 } 150 151 152 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 153 if (callback == NULL){ 154 log_error("hfp_ag_register_packet_handler called with NULL callback"); 155 return; 156 } 157 hfp_callback = callback; 158 hfp_set_callback(callback); 159 } 160 161 static int use_in_band_tone(void){ 162 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 163 } 164 165 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 166 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 167 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 168 return hf && ag; 169 } 170 171 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 172 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 173 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 174 return hf && ag; 175 } 176 177 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 178 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 179 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 180 return hf && ag; 181 } 182 183 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){ 184 if (!name){ 185 name = default_hfp_ag_service_name; 186 } 187 hfp_create_sdp_record(service, service_record_handle, SDP_HandsfreeAudioGateway, rfcomm_channel_nr, name); 188 189 /* 190 * 0x01 – Ability to reject a call 191 * 0x00 – No ability to reject a call 192 */ 193 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 194 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 195 196 // Construct SupportedFeatures for SDP bitmap: 197 // 198 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 199 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 200 // 201 uint16_t sdp_features = supported_features &0x1f; 202 if (supported_features & wide_band_speech){ 203 sdp_features |= 1 << 5; // Wide band speech bit 204 } 205 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 206 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 207 } 208 209 static int hfp_ag_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 210 char buffer[20]; 211 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 212 return send_str_over_rfcomm(cid, buffer); 213 } 214 215 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 216 char buffer[40]; 217 sprintf(buffer, "\r\n%s:%d\r\n\r\nOK\r\n", HFP_SUPPORTED_FEATURES, hfp_supported_features); 218 return send_str_over_rfcomm(cid, buffer); 219 } 220 221 static int hfp_ag_ok(uint16_t cid){ 222 char buffer[10]; 223 sprintf(buffer, "\r\nOK\r\n"); 224 return send_str_over_rfcomm(cid, buffer); 225 } 226 227 static int hfp_ag_ring(uint16_t cid){ 228 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 229 } 230 231 static int hfp_ag_send_clip(uint16_t cid){ 232 char buffer[50]; 233 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 234 return send_str_over_rfcomm(cid, buffer); 235 } 236 237 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 238 char buffer[50]; 239 sprintf(buffer, "\r\n%s: ,\"%s\",%u, , \r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 240 return send_str_over_rfcomm(cid, buffer); 241 } 242 243 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 244 char buffer[50]; 245 sprintf(buffer, "\r\n%s: %s\r\n", HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 246 return send_str_over_rfcomm(cid, buffer); 247 } 248 249 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 250 char buffer[50]; 251 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 252 return send_str_over_rfcomm(cid, buffer); 253 } 254 255 static int hfp_ag_error(uint16_t cid){ 256 char buffer[10]; 257 sprintf(buffer, "\r\nERROR\r\n"); 258 return send_str_over_rfcomm(cid, buffer); 259 } 260 261 static int hfp_ag_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 262 char buffer[20]; 263 sprintf(buffer, "\r\n%s=%d\r\n", HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 264 return send_str_over_rfcomm(cid, buffer); 265 } 266 267 // fast & small implementation for fixed int size 268 static int string_len_for_uint32(uint32_t i){ 269 if (i < 10) return 1; 270 if (i < 100) return 2; 271 if (i < 1000) return 3; 272 if (i < 10000) return 4; 273 if (i < 100000) return 5; 274 if (i < 1000000) return 6; 275 if (i < 10000000) return 7; 276 if (i < 100000000) return 8; 277 if (i < 1000000000) return 9; 278 return 10; 279 } 280 281 // get size for indicator string 282 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 283 // template: ("$NAME",($MIN,$MAX)) 284 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 285 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 286 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 287 } 288 289 // store indicator 290 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer){ 291 sprintf((char *) buffer, "(\"%s\",(%d,%d)),", 292 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 293 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 294 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 295 } 296 297 // structure: header [indicator [comma indicator]] footer 298 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 299 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 300 if (!num_indicators) return 2; 301 return 3 + (num_indicators-1) * 2; 302 } 303 304 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 305 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 306 if (index == 0) { 307 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 308 } 309 index--; 310 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 311 int indicator_index = index >> 1; 312 if ((index & 1) == 0){ 313 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 314 } 315 if (indicator_index == num_indicators - 1){ 316 return 8; // "\r\n\r\nOK\r\n" 317 } 318 return 1; // comma 319 } 320 321 static void hgp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer){ 322 if (index == 0){ 323 *buffer++ = '\r'; 324 *buffer++ = '\n'; 325 int len = strlen(HFP_INDICATOR); 326 memcpy(buffer, HFP_INDICATOR, len); 327 buffer += len; 328 *buffer++ = ':'; 329 return; 330 } 331 index--; 332 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 333 int indicator_index = index >> 1; 334 if ((index & 1) == 0){ 335 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer); 336 return; 337 } 338 if (indicator_index == num_indicators-1){ 339 memcpy(buffer, "\r\n\r\nOK\r\n", 8); 340 return; 341 } 342 *buffer = ','; 343 } 344 345 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 346 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 347 int i; 348 int offset = 0; 349 for (i = 0; i < hfp_generic_status_indicators_nr-1; i++) { 350 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 351 } 352 if (i < hfp_generic_status_indicators_nr){ 353 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 354 } 355 return offset; 356 } 357 358 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 359 if (buffer_size < hfp_generic_status_indicators_nr * 3) return 0; 360 int i; 361 int offset = 0; 362 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 363 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); 364 } 365 return offset; 366 } 367 368 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 369 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 370 int i; 371 int offset = 0; 372 for (i = 0; i < hfp_ag_indicators_nr-1; i++) { 373 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 374 } 375 if (i<hfp_ag_indicators_nr){ 376 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 377 } 378 return offset; 379 } 380 381 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 382 if (buffer_size < hfp_ag_call_hold_services_nr * 3) return 0; 383 int i; 384 int offset = snprintf(buffer, buffer_size, "("); 385 for (i = 0; i < hfp_ag_call_hold_services_nr-1; i++) { 386 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 387 } 388 if (i<hfp_ag_call_hold_services_nr){ 389 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 390 } 391 return offset; 392 } 393 394 static int hfp_ag_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 395 int start_segment, int num_segments, 396 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 397 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer)){ 398 399 // assumes: can send now == true 400 // assumes: num segments > 0 401 // assumes: individual segments are smaller than MTU 402 rfcomm_reserve_packet_buffer(); 403 int mtu = rfcomm_get_max_frame_size(cid); 404 uint8_t * data = rfcomm_get_outgoing_buffer(); 405 int offset = 0; 406 int segment = start_segment; 407 while (segment < num_segments){ 408 int segment_len = get_segment_len(hfp_connection, segment); 409 if (offset + segment_len > mtu) break; 410 // append segement 411 store_segment(hfp_connection, segment, data+offset); 412 offset += segment_len; 413 segment++; 414 } 415 rfcomm_send_prepared(cid, offset); 416 return segment; 417 } 418 419 // returns next segment to store 420 static int hfp_ag_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 421 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 422 return hfp_ag_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 423 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 424 } 425 426 static int hfp_ag_retrieve_indicators_status_cmd(uint16_t cid){ 427 char buffer[40]; 428 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_INDICATOR); 429 offset += hfp_ag_indicators_status_join(buffer+offset, sizeof(buffer)-offset); 430 431 buffer[offset] = 0; 432 433 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 434 buffer[offset] = 0; 435 return send_str_over_rfcomm(cid, buffer); 436 } 437 438 static int hfp_ag_set_indicator_status_update_cmd(uint16_t cid, uint8_t activate){ 439 // AT\r\n%s:3,0,0,%d\r\n 440 return hfp_ag_ok(cid); 441 } 442 443 444 static int hfp_ag_retrieve_can_hold_call_cmd(uint16_t cid){ 445 char buffer[40]; 446 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 447 offset += hfp_ag_call_services_join(buffer+offset, sizeof(buffer)-offset); 448 449 buffer[offset] = 0; 450 451 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 452 buffer[offset] = 0; 453 return send_str_over_rfcomm(cid, buffer); 454 } 455 456 457 static int hfp_ag_list_supported_generic_status_indicators_cmd(uint16_t cid){ 458 return hfp_ag_ok(cid); 459 } 460 461 static int hfp_ag_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 462 char buffer[40]; 463 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 464 offset += hfp_hf_indicators_join(buffer+offset, sizeof(buffer)-offset); 465 466 buffer[offset] = 0; 467 468 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ")\r\n\r\nOK\r\n"); 469 buffer[offset] = 0; 470 return send_str_over_rfcomm(cid, buffer); 471 } 472 473 static int hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 474 char buffer[40]; 475 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer)); 476 477 buffer[offset] = 0; 478 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 479 buffer[offset] = 0; 480 return send_str_over_rfcomm(cid, buffer); 481 } 482 483 static int hfp_ag_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 484 char buffer[20]; 485 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 486 return send_str_over_rfcomm(cid, buffer); 487 } 488 489 static int hfp_ag_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 490 char buffer[40]; 491 if (strlen(op.name) == 0){ 492 sprintf(buffer, "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 493 } else { 494 sprintf(buffer, "\r\n%s:%d,%d,%s\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format, op.name); 495 } 496 return send_str_over_rfcomm(cid, buffer); 497 } 498 499 500 static int hfp_ag_cmd_suggest_codec(uint16_t cid, uint8_t codec){ 501 char buffer[30]; 502 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CONFIRM_COMMON_CODEC, codec); 503 return send_str_over_rfcomm(cid, buffer); 504 } 505 506 static int hfp_ag_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 507 char buffer[30]; 508 sprintf(buffer, "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 509 return send_str_over_rfcomm(cid, buffer); 510 } 511 512 static int hfp_ag_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 513 char buffer[30]; 514 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_SPEAKER_GAIN, gain); 515 return send_str_over_rfcomm(cid, buffer); 516 } 517 518 static int hfp_ag_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 519 char buffer[30]; 520 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_MICROPHONE_GAIN, gain); 521 return send_str_over_rfcomm(cid, buffer); 522 } 523 524 static int hfp_ag_set_response_and_hold(uint16_t cid, int state){ 525 char buffer[30]; 526 sprintf(buffer, "\r\n%s: %d\r\n", HFP_RESPONSE_AND_HOLD, state); 527 return send_str_over_rfcomm(cid, buffer); 528 } 529 530 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 531 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 532 533 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 534 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 535 return HFP_CODEC_MSBC; 536 } 537 } 538 return HFP_CODEC_CVSD; 539 } 540 541 static void hfp_init_link_settings(hfp_connection_t * hfp_connection){ 542 // determine highest possible link setting 543 hfp_connection->link_setting = HFP_LINK_SETTINGS_D1; 544 // anything else requires eSCO support on both sides 545 if (hci_extended_sco_link_supported() && hci_remote_esco_supported(hfp_connection->acl_handle)){ 546 switch (hfp_connection->negotiated_codec){ 547 case HFP_CODEC_CVSD: 548 hfp_connection->link_setting = HFP_LINK_SETTINGS_S3; 549 if ((hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) 550 && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4))){ 551 hfp_connection->link_setting = HFP_LINK_SETTINGS_S4; 552 } 553 break; 554 case HFP_CODEC_MSBC: 555 hfp_connection->link_setting = HFP_LINK_SETTINGS_T2; 556 break; 557 default: 558 break; 559 } 560 } 561 log_info("hfp_init_link_settings: %u", hfp_connection->link_setting); 562 } 563 564 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 565 /* events ( == commands): 566 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 567 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 568 hf_trigger_codec_connection_setup == received BCC 569 ag_trigger_codec_connection_setup == received from AG to send BCS 570 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 571 */ 572 573 switch (hfp_connection->codecs_state){ 574 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 575 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 576 break; 577 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 578 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 579 break; 580 default: 581 break; 582 } 583 584 // printf(" -> State machine: CC\n"); 585 586 switch (hfp_connection->command){ 587 case HFP_CMD_AVAILABLE_CODECS: 588 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 589 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 590 hfp_ag_ok(hfp_connection->rfcomm_cid); 591 return 1; 592 } 593 594 switch (hfp_connection->codecs_state){ 595 case HFP_CODECS_AG_SENT_COMMON_CODEC: 596 case HFP_CODECS_EXCHANGED: 597 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 598 break; 599 default: 600 break; 601 } 602 hfp_ag_ok(hfp_connection->rfcomm_cid); 603 return 1; 604 605 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 606 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 607 hfp_ag_ok(hfp_connection->rfcomm_cid); 608 return 1; 609 610 case HFP_CMD_AG_SEND_COMMON_CODEC: 611 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 612 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 613 hfp_ag_cmd_suggest_codec(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 614 return 1; 615 616 case HFP_CMD_HF_CONFIRMED_CODEC: 617 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 618 hfp_connection->codecs_state = HFP_CODECS_ERROR; 619 hfp_ag_error(hfp_connection->rfcomm_cid); 620 return 1; 621 } 622 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 623 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 624 log_info("hfp: codec confirmed: %s", hfp_connection->negotiated_codec == HFP_CODEC_MSBC ? "mSBC" : "CVSD"); 625 hfp_ag_ok(hfp_connection->rfcomm_cid); 626 // now, pick link settings 627 hfp_init_link_settings(hfp_connection); 628 return 1; 629 default: 630 break; 631 } 632 return 0; 633 } 634 635 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 636 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 637 hfp_emit_slc_connection_event(hfp_callback, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 638 639 // if active call exist, set per-hfp_connection state active, too (when audio is on) 640 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 641 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 642 } 643 // if AG is ringing, also start ringing on the HF 644 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS && 645 hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 646 hfp_ag_hf_start_ringing(hfp_connection); 647 } 648 } 649 650 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 651 log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 652 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 653 int done = 0; 654 switch(hfp_connection->command){ 655 case HFP_CMD_SUPPORTED_FEATURES: 656 switch(hfp_connection->state){ 657 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 658 case HFP_EXCHANGE_SUPPORTED_FEATURES: 659 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 660 if (has_codec_negotiation_feature(hfp_connection)){ 661 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 662 } else { 663 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 664 } 665 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 666 return 1; 667 default: 668 break; 669 } 670 break; 671 case HFP_CMD_AVAILABLE_CODECS: 672 done = codecs_exchange_state_machine(hfp_connection); 673 674 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 675 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 676 } 677 return done; 678 679 case HFP_CMD_RETRIEVE_AG_INDICATORS: 680 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 681 // HF requested AG Indicators and we did expect it 682 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 683 // continue below in state switch 684 } 685 break; 686 687 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 688 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 689 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 690 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 691 return 1; 692 693 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 694 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 695 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 696 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 697 } else if (has_hf_indicators_feature(hfp_connection)){ 698 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 699 } else { 700 hfp_ag_slc_established(hfp_connection); 701 } 702 hfp_ag_set_indicator_status_update_cmd(hfp_connection->rfcomm_cid, 1); 703 return 1; 704 705 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 706 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 707 if (has_hf_indicators_feature(hfp_connection)){ 708 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 709 } 710 hfp_ag_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 711 if (!has_hf_indicators_feature(hfp_connection)){ 712 hfp_ag_slc_established(hfp_connection); 713 } 714 return 1; 715 716 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 717 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 718 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 719 hfp_ag_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 720 return 1; 721 722 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 723 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 724 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 725 hfp_ag_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 726 return 1; 727 728 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 729 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 730 hfp_ag_slc_established(hfp_connection); 731 hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 732 return 1; 733 default: 734 break; 735 } 736 737 switch (hfp_connection->state){ 738 case HFP_RETRIEVE_INDICATORS: { 739 int next_segment = hfp_ag_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 740 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 741 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 742 if (next_segment < num_segments){ 743 // prepare sending of next segment 744 hfp_connection->send_ag_indicators_segment = next_segment; 745 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 746 } else { 747 // done, go to next state 748 hfp_connection->send_ag_indicators_segment = 0; 749 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 750 } 751 return 1; 752 } 753 default: 754 break; 755 } 756 757 return done; 758 } 759 760 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 761 762 int done = codecs_exchange_state_machine(hfp_connection); 763 if (done) return done; 764 765 switch(hfp_connection->command){ 766 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 767 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 768 hfp_ag_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 769 return 1; 770 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 771 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 772 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 773 hfp_ag_ok(hfp_connection->rfcomm_cid); 774 hfp_ag_setup_audio_connection(hfp_connection); 775 } else { 776 hfp_ag_error(hfp_connection->rfcomm_cid); 777 } 778 return 1; 779 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 780 hfp_ag_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 781 return 1; 782 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 783 hfp_ag_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 784 return 1; 785 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 786 if (hfp_connection->network_operator.format != 0){ 787 hfp_ag_error(hfp_connection->rfcomm_cid); 788 } else { 789 hfp_ag_ok(hfp_connection->rfcomm_cid); 790 } 791 return 1; 792 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 793 hfp_ag_ok(hfp_connection->rfcomm_cid); 794 return 1; 795 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 796 if (hfp_connection->extended_audio_gateway_error){ 797 hfp_connection->extended_audio_gateway_error = 0; 798 hfp_ag_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 799 return 1; 800 } 801 break; 802 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 803 hfp_ag_ok(hfp_connection->rfcomm_cid); 804 return 1; 805 default: 806 break; 807 } 808 return 0; 809 } 810 811 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 812 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 813 hfp_connection->state > HFP_W2_DISCONNECT_SCO) return 0; 814 815 816 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->release_audio_connection){ 817 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 818 hfp_connection->release_audio_connection = 0; 819 gap_disconnect(hfp_connection->sco_handle); 820 return 1; 821 } 822 823 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 824 825 // run codecs exchange 826 int done = codecs_exchange_state_machine(hfp_connection); 827 if (done) return done; 828 829 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return done; 830 if (hfp_connection->establish_audio_connection){ 831 hfp_connection->state = HFP_W4_SCO_CONNECTED; 832 hfp_connection->establish_audio_connection = 0; 833 hfp_setup_synchronous_connection(hfp_connection); 834 return 1; 835 } 836 return 0; 837 } 838 839 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 840 btstack_linked_list_iterator_t it; 841 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 842 843 while (btstack_linked_list_iterator_has_next(&it)){ 844 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 845 if ( & hfp_connection->hfp_timeout == ts) { 846 return hfp_connection; 847 } 848 } 849 return NULL; 850 } 851 852 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 853 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 854 if (!hfp_connection) return; 855 856 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 857 hfp_connection->ag_ring = 1; 858 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 859 860 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 861 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 862 863 hfp_run_for_context(hfp_connection); 864 } 865 866 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 867 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 868 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 869 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 870 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 871 } 872 873 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 874 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 875 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 876 } 877 878 // 879 // transitition implementations for hfp_ag_call_state_machine 880 // 881 882 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 883 if (use_in_band_tone()){ 884 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 885 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 886 } else { 887 hfp_timeout_start(hfp_connection); 888 hfp_connection->ag_ring = 1; 889 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 890 hfp_connection->call_state = HFP_CALL_RINGING; 891 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 892 } 893 } 894 895 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 896 hfp_connection->ag_ring = 0; 897 hfp_connection->ag_send_clip = 0; 898 hfp_timeout_stop(hfp_connection); 899 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_STOP_RINGINIG); 900 } 901 902 static void hfp_ag_trigger_incoming_call(void){ 903 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 904 if (indicator_index < 0) return; 905 906 btstack_linked_list_iterator_t it; 907 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 908 while (btstack_linked_list_iterator_has_next(&it)){ 909 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 910 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 911 if (hfp_connection->call_state == HFP_CALL_IDLE){ 912 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 913 hfp_ag_hf_start_ringing(hfp_connection); 914 } 915 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 916 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 917 } 918 hfp_run_for_context(hfp_connection); 919 } 920 } 921 922 static void hfp_ag_transfer_callsetup_state(void){ 923 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 924 if (indicator_index < 0) return; 925 926 btstack_linked_list_iterator_t it; 927 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 928 while (btstack_linked_list_iterator_has_next(&it)){ 929 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 930 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 931 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 932 hfp_run_for_context(hfp_connection); 933 } 934 } 935 936 static void hfp_ag_transfer_call_state(void){ 937 int indicator_index = get_ag_indicator_index_for_name("call"); 938 if (indicator_index < 0) return; 939 940 btstack_linked_list_iterator_t it; 941 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 942 while (btstack_linked_list_iterator_has_next(&it)){ 943 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 944 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 945 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 946 hfp_run_for_context(hfp_connection); 947 } 948 } 949 950 static void hfp_ag_transfer_callheld_state(void){ 951 int indicator_index = get_ag_indicator_index_for_name("callheld"); 952 if (indicator_index < 0) return; 953 954 btstack_linked_list_iterator_t it; 955 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 956 while (btstack_linked_list_iterator_has_next(&it)){ 957 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 958 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 959 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 960 hfp_run_for_context(hfp_connection); 961 } 962 } 963 964 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 965 966 int call_indicator_index = get_ag_indicator_index_for_name("call"); 967 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 968 969 btstack_linked_list_iterator_t it; 970 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 971 while (btstack_linked_list_iterator_has_next(&it)){ 972 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 973 if (hfp_connection->call_state != HFP_CALL_RINGING && 974 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 975 976 hfp_ag_hf_stop_ringing(hfp_connection); 977 if (hfp_connection == source){ 978 hfp_connection->ok_pending = 1; 979 980 if (use_in_band_tone()){ 981 hfp_connection->call_state = HFP_CALL_ACTIVE; 982 } else { 983 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 984 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 985 } 986 987 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 988 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 989 990 } else { 991 hfp_connection->call_state = HFP_CALL_IDLE; 992 } 993 hfp_run_for_context(hfp_connection); 994 } 995 } 996 997 static void hfp_ag_ag_accept_call(void){ 998 999 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1000 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1001 1002 btstack_linked_list_iterator_t it; 1003 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1004 while (btstack_linked_list_iterator_has_next(&it)){ 1005 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1006 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 1007 1008 hfp_ag_hf_stop_ringing(hfp_connection); 1009 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1010 1011 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1012 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1013 1014 hfp_run_for_context(hfp_connection); 1015 break; // only single 1016 } 1017 } 1018 1019 static void hfp_ag_trigger_reject_call(void){ 1020 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1021 btstack_linked_list_iterator_t it; 1022 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1023 while (btstack_linked_list_iterator_has_next(&it)){ 1024 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1025 if (connection->call_state != HFP_CALL_RINGING && 1026 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1027 hfp_ag_hf_stop_ringing(connection); 1028 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1029 connection->call_state = HFP_CALL_IDLE; 1030 hfp_run_for_context(connection); 1031 } 1032 } 1033 1034 static void hfp_ag_trigger_terminate_call(void){ 1035 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1036 1037 btstack_linked_list_iterator_t it; 1038 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1039 while (btstack_linked_list_iterator_has_next(&it)){ 1040 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1041 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1042 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1043 hfp_connection->call_state = HFP_CALL_IDLE; 1044 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1045 hfp_connection->release_audio_connection = 1; 1046 hfp_run_for_context(hfp_connection); 1047 } 1048 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_TERMINATED); 1049 } 1050 1051 static void hfp_ag_set_callsetup_indicator(void){ 1052 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1053 if (!indicator){ 1054 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1055 return; 1056 }; 1057 indicator->status = hfp_gsm_callsetup_status(); 1058 } 1059 1060 static void hfp_ag_set_callheld_indicator(void){ 1061 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1062 if (!indicator){ 1063 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1064 return; 1065 }; 1066 indicator->status = hfp_gsm_callheld_status(); 1067 } 1068 1069 static void hfp_ag_set_call_indicator(void){ 1070 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1071 if (!indicator){ 1072 log_error("hfp_ag_set_call_state: call indicator is missing"); 1073 return; 1074 }; 1075 indicator->status = hfp_gsm_call_status(); 1076 } 1077 1078 static void hfp_ag_stop_ringing(void){ 1079 btstack_linked_list_iterator_t it; 1080 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1081 while (btstack_linked_list_iterator_has_next(&it)){ 1082 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1083 if (hfp_connection->call_state != HFP_CALL_RINGING && 1084 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1085 hfp_ag_hf_stop_ringing(hfp_connection); 1086 } 1087 } 1088 1089 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1090 btstack_linked_list_iterator_t it; 1091 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1092 while (btstack_linked_list_iterator_has_next(&it)){ 1093 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1094 if (hfp_connection->call_state == call_state) return hfp_connection; 1095 } 1096 return NULL; 1097 } 1098 1099 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1100 btstack_linked_list_iterator_t it; 1101 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1102 while (btstack_linked_list_iterator_has_next(&it)){ 1103 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1104 hfp_connection->send_response_and_hold_status = state + 1; 1105 } 1106 } 1107 1108 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1109 int indicator_index; 1110 switch (hfp_connection->call_state){ 1111 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1112 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1113 // we got event: audio hfp_connection established 1114 hfp_timeout_start(hfp_connection); 1115 hfp_connection->ag_ring = 1; 1116 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1117 hfp_connection->call_state = HFP_CALL_RINGING; 1118 hfp_connection->call_state = HFP_CALL_RINGING; 1119 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 1120 break; 1121 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1122 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1123 // we got event: audio hfp_connection established 1124 hfp_connection->call_state = HFP_CALL_ACTIVE; 1125 break; 1126 case HFP_CALL_W2_SEND_CALL_WAITING: 1127 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1128 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1129 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1130 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1131 break; 1132 default: 1133 break; 1134 } 1135 return 0; 1136 } 1137 // hfp_connection is used to identify originating HF 1138 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1139 int indicator_index; 1140 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1141 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1142 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1143 1144 //printf("hfp_ag_call_sm event %d \n", event); 1145 switch (event){ 1146 case HFP_AG_INCOMING_CALL: 1147 switch (hfp_gsm_call_status()){ 1148 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1149 switch (hfp_gsm_callsetup_status()){ 1150 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1151 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1152 hfp_ag_set_callsetup_indicator(); 1153 hfp_ag_trigger_incoming_call(); 1154 log_info("AG rings"); 1155 break; 1156 default: 1157 break; 1158 } 1159 break; 1160 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1161 switch (hfp_gsm_callsetup_status()){ 1162 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1163 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1164 hfp_ag_set_callsetup_indicator(); 1165 hfp_ag_trigger_incoming_call(); 1166 log_info("AG call waiting"); 1167 break; 1168 default: 1169 break; 1170 } 1171 break; 1172 } 1173 break; 1174 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1175 switch (hfp_gsm_call_status()){ 1176 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1177 switch (hfp_gsm_callsetup_status()){ 1178 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1179 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1180 hfp_ag_set_call_indicator(); 1181 hfp_ag_set_callsetup_indicator(); 1182 hfp_ag_ag_accept_call(); 1183 log_info("AG answers call, accept call by GSM"); 1184 break; 1185 default: 1186 break; 1187 } 1188 break; 1189 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1190 switch (hfp_gsm_callsetup_status()){ 1191 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1192 log_info("AG: current call is placed on hold, incoming call gets active"); 1193 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1194 hfp_ag_set_callsetup_indicator(); 1195 hfp_ag_set_callheld_indicator(); 1196 hfp_ag_transfer_callsetup_state(); 1197 hfp_ag_transfer_callheld_state(); 1198 break; 1199 default: 1200 break; 1201 } 1202 break; 1203 } 1204 break; 1205 1206 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1207 switch (hfp_gsm_call_status()){ 1208 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1209 switch (hfp_gsm_callheld_status()){ 1210 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1211 log_info("AG: joining held call with active call"); 1212 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1213 hfp_ag_set_callheld_indicator(); 1214 hfp_ag_transfer_callheld_state(); 1215 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1216 break; 1217 default: 1218 break; 1219 } 1220 break; 1221 default: 1222 break; 1223 } 1224 break; 1225 1226 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1227 switch (hfp_gsm_call_status()){ 1228 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1229 switch (hfp_gsm_callsetup_status()){ 1230 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1231 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1232 hfp_ag_set_callsetup_indicator(); 1233 hfp_ag_set_call_indicator(); 1234 hfp_ag_hf_accept_call(hfp_connection); 1235 log_info("HF answers call, accept call by GSM"); 1236 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_ANSWERED); 1237 break; 1238 default: 1239 break; 1240 } 1241 break; 1242 default: 1243 break; 1244 } 1245 break; 1246 1247 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1248 switch (hfp_gsm_call_status()){ 1249 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1250 switch (hfp_gsm_callsetup_status()){ 1251 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1252 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1253 hfp_ag_response_and_hold_active = 1; 1254 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1255 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1256 // as with regualr call 1257 hfp_ag_set_call_indicator(); 1258 hfp_ag_set_callsetup_indicator(); 1259 hfp_ag_ag_accept_call(); 1260 log_info("AG response and hold - hold by AG"); 1261 break; 1262 default: 1263 break; 1264 } 1265 break; 1266 default: 1267 break; 1268 } 1269 break; 1270 1271 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1272 switch (hfp_gsm_call_status()){ 1273 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1274 switch (hfp_gsm_callsetup_status()){ 1275 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1276 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1277 hfp_ag_response_and_hold_active = 1; 1278 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1279 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1280 // as with regualr call 1281 hfp_ag_set_call_indicator(); 1282 hfp_ag_set_callsetup_indicator(); 1283 hfp_ag_hf_accept_call(hfp_connection); 1284 log_info("AG response and hold - hold by HF"); 1285 break; 1286 default: 1287 break; 1288 } 1289 break; 1290 default: 1291 break; 1292 } 1293 break; 1294 1295 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1296 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1297 if (!hfp_ag_response_and_hold_active) break; 1298 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1299 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1300 hfp_ag_response_and_hold_active = 0; 1301 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1302 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1303 log_info("Held Call accepted and active"); 1304 break; 1305 1306 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1307 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1308 if (!hfp_ag_response_and_hold_active) break; 1309 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1310 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1311 hfp_ag_response_and_hold_active = 0; 1312 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1313 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1314 // from terminate by ag 1315 hfp_ag_set_call_indicator(); 1316 hfp_ag_trigger_terminate_call(); 1317 break; 1318 1319 case HFP_AG_TERMINATE_CALL_BY_HF: 1320 switch (hfp_gsm_call_status()){ 1321 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1322 switch (hfp_gsm_callsetup_status()){ 1323 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1324 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1325 hfp_ag_set_callsetup_indicator(); 1326 hfp_ag_transfer_callsetup_state(); 1327 hfp_ag_trigger_reject_call(); 1328 log_info("HF Rejected Incoming call, AG terminate call"); 1329 break; 1330 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1331 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1332 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1333 hfp_ag_set_callsetup_indicator(); 1334 hfp_ag_transfer_callsetup_state(); 1335 log_info("AG terminate outgoing call process"); 1336 break; 1337 default: 1338 break; 1339 } 1340 break; 1341 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1342 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1343 hfp_ag_set_call_indicator(); 1344 hfp_ag_transfer_call_state(); 1345 hfp_connection->call_state = HFP_CALL_IDLE; 1346 log_info("AG terminate call"); 1347 break; 1348 } 1349 break; 1350 1351 case HFP_AG_TERMINATE_CALL_BY_AG: 1352 switch (hfp_gsm_call_status()){ 1353 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1354 switch (hfp_gsm_callsetup_status()){ 1355 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1356 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1357 hfp_ag_set_callsetup_indicator(); 1358 hfp_ag_trigger_reject_call(); 1359 log_info("AG Rejected Incoming call, AG terminate call"); 1360 break; 1361 default: 1362 break; 1363 } 1364 break; 1365 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1366 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1367 hfp_ag_set_callsetup_indicator(); 1368 hfp_ag_set_call_indicator(); 1369 hfp_ag_trigger_terminate_call(); 1370 log_info("AG terminate call"); 1371 break; 1372 default: 1373 break; 1374 } 1375 break; 1376 case HFP_AG_CALL_DROPPED: 1377 switch (hfp_gsm_call_status()){ 1378 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1379 switch (hfp_gsm_callsetup_status()){ 1380 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1381 hfp_ag_stop_ringing(); 1382 log_info("Incoming call interrupted"); 1383 break; 1384 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1385 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1386 log_info("Outgoing call interrupted\n"); 1387 log_info("AG notify call dropped\n"); 1388 break; 1389 default: 1390 break; 1391 } 1392 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1393 hfp_ag_set_callsetup_indicator(); 1394 hfp_ag_transfer_callsetup_state(); 1395 break; 1396 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1397 if (hfp_ag_response_and_hold_active) { 1398 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1399 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1400 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1401 } 1402 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1403 hfp_ag_set_callsetup_indicator(); 1404 hfp_ag_set_call_indicator(); 1405 hfp_ag_trigger_terminate_call(); 1406 log_info("AG notify call dropped"); 1407 break; 1408 default: 1409 break; 1410 } 1411 break; 1412 1413 case HFP_AG_OUTGOING_CALL_INITIATED: 1414 // directly reject call if number of free slots is exceeded 1415 if (!hfp_gsm_call_possible()){ 1416 hfp_connection->send_error = 1; 1417 hfp_run_for_context(hfp_connection); 1418 break; 1419 } 1420 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1421 1422 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1423 1424 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1425 break; 1426 1427 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1428 // directly reject call if number of free slots is exceeded 1429 if (!hfp_gsm_call_possible()){ 1430 hfp_connection->send_error = 1; 1431 hfp_run_for_context(hfp_connection); 1432 break; 1433 } 1434 1435 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1436 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1437 1438 log_info("Redial last number"); 1439 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1440 1441 if (strlen(last_dialed_number) > 0){ 1442 log_info("Last number exists: accept call"); 1443 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1444 } else { 1445 log_info("log_infoLast number missing: reject call"); 1446 hfp_ag_outgoing_call_rejected(); 1447 } 1448 break; 1449 } 1450 case HFP_AG_OUTGOING_CALL_REJECTED: 1451 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1452 if (!hfp_connection){ 1453 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1454 break; 1455 } 1456 1457 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1458 hfp_connection->call_state = HFP_CALL_IDLE; 1459 hfp_connection->send_error = 1; 1460 hfp_run_for_context(hfp_connection); 1461 break; 1462 1463 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1464 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1465 if (!hfp_connection){ 1466 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1467 break; 1468 } 1469 1470 hfp_connection->ok_pending = 1; 1471 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1472 1473 // trigger callsetup to be 1474 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1475 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1476 1477 hfp_ag_set_callsetup_indicator(); 1478 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1479 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1480 1481 // put current call on hold if active 1482 if (put_call_on_hold){ 1483 log_info("AG putting current call on hold for new outgoing calllog_info"); 1484 hfp_ag_set_callheld_indicator(); 1485 indicator_index = get_ag_indicator_index_for_name("callheld"); 1486 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1487 } 1488 1489 // start audio if needed 1490 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1491 break; 1492 } 1493 case HFP_AG_OUTGOING_CALL_RINGING: 1494 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1495 if (!hfp_connection){ 1496 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1497 break; 1498 } 1499 1500 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1501 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1502 hfp_ag_set_callsetup_indicator(); 1503 hfp_ag_transfer_callsetup_state(); 1504 break; 1505 1506 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1507 // get outgoing call 1508 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1509 if (!hfp_connection){ 1510 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1511 } 1512 if (!hfp_connection){ 1513 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1514 break; 1515 } 1516 1517 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1518 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1519 hfp_connection->call_state = HFP_CALL_ACTIVE; 1520 hfp_ag_set_callsetup_indicator(); 1521 hfp_ag_set_call_indicator(); 1522 hfp_ag_transfer_call_state(); 1523 hfp_ag_transfer_callsetup_state(); 1524 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1525 hfp_ag_set_callheld_indicator(); 1526 hfp_ag_transfer_callheld_state(); 1527 } 1528 break; 1529 } 1530 1531 case HFP_AG_CALL_HOLD_USER_BUSY: 1532 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1533 hfp_ag_set_callsetup_indicator(); 1534 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1535 hfp_connection->call_state = HFP_CALL_ACTIVE; 1536 log_info("AG: Call Waiting, User Busy"); 1537 break; 1538 1539 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1540 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1541 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1542 1543 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1544 if (call_held || call_setup_in_progress){ 1545 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1546 1547 } 1548 1549 if (call_setup_in_progress){ 1550 log_info("AG: Call Dropped, Accept new call"); 1551 hfp_ag_set_callsetup_indicator(); 1552 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1553 } else { 1554 log_info("AG: Call Dropped, Resume held call"); 1555 } 1556 if (call_held){ 1557 hfp_ag_set_callheld_indicator(); 1558 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1559 } 1560 1561 hfp_connection->call_state = HFP_CALL_ACTIVE; 1562 break; 1563 } 1564 1565 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1566 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1567 // only update if callsetup changed 1568 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1569 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1570 1571 if (call_setup_in_progress){ 1572 log_info("AG: Call on Hold, Accept new call"); 1573 hfp_ag_set_callsetup_indicator(); 1574 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1575 } else { 1576 log_info("AG: Swap calls"); 1577 } 1578 1579 hfp_ag_set_callheld_indicator(); 1580 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1581 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1582 hfp_connection->call_state = HFP_CALL_ACTIVE; 1583 break; 1584 } 1585 1586 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1587 // Adds a held call to the conversation. 1588 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1589 log_info("AG: Join 3-way-call"); 1590 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1591 hfp_ag_set_callheld_indicator(); 1592 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1593 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1594 } 1595 hfp_connection->call_state = HFP_CALL_ACTIVE; 1596 break; 1597 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1598 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1599 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1600 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1601 hfp_ag_set_call_indicator(); 1602 hfp_ag_set_callheld_indicator(); 1603 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1604 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1605 hfp_connection->call_state = HFP_CALL_IDLE; 1606 break; 1607 1608 default: 1609 break; 1610 } 1611 1612 1613 } 1614 1615 1616 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1617 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1618 if (!active_call) return; 1619 1620 int idx = active_call->index; 1621 hfp_enhanced_call_dir_t dir = active_call->direction; 1622 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1623 hfp_enhanced_call_mode_t mode = active_call->mode; 1624 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1625 uint8_t type = active_call->clip_type; 1626 char * number = active_call->clip_number; 1627 1628 char buffer[100]; 1629 // TODO: check length of a buffer, to fit the MTU 1630 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1631 if (number){ 1632 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ", \"%s\",%u", number, type); 1633 } 1634 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1635 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, 1636 mode, mpty, type, number); 1637 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1638 } 1639 1640 static void hfp_run_for_context(hfp_connection_t *hfp_connection){ 1641 1642 log_info("hfp_run_for_context %p", hfp_connection); 1643 1644 if (!hfp_connection) return; 1645 1646 if (!hfp_connection->rfcomm_cid) return; 1647 1648 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1649 log_info("hfp_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1650 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1651 return; 1652 } 1653 1654 if (hfp_connection->send_status_of_current_calls){ 1655 hfp_connection->ok_pending = 0; 1656 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1657 hfp_connection->next_call_index++; 1658 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1659 } else { 1660 hfp_connection->next_call_index = 0; 1661 hfp_connection->ok_pending = 1; 1662 hfp_connection->send_status_of_current_calls = 0; 1663 } 1664 return; 1665 } 1666 1667 if (hfp_connection->ag_notify_incoming_call_waiting){ 1668 hfp_connection->ag_notify_incoming_call_waiting = 0; 1669 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1670 return; 1671 } 1672 1673 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1674 hfp_connection->ok_pending = 0; 1675 hfp_connection->send_error = 0; 1676 hfp_connection->command = HFP_CMD_NONE; 1677 hfp_ag_error(hfp_connection->rfcomm_cid); 1678 return; 1679 } 1680 1681 if (hfp_connection->send_error){ 1682 hfp_connection->send_error = 0; 1683 hfp_connection->command = HFP_CMD_NONE; 1684 hfp_ag_error(hfp_connection->rfcomm_cid); 1685 return; 1686 } 1687 1688 // note: before update AG indicators and ok_pending 1689 if (hfp_connection->send_response_and_hold_status){ 1690 int status = hfp_connection->send_response_and_hold_status - 1; 1691 hfp_connection->send_response_and_hold_status = 0; 1692 hfp_ag_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1693 return; 1694 } 1695 1696 if (hfp_connection->ok_pending){ 1697 hfp_connection->ok_pending = 0; 1698 hfp_connection->command = HFP_CMD_NONE; 1699 hfp_ag_ok(hfp_connection->rfcomm_cid); 1700 return; 1701 } 1702 1703 // update AG indicators 1704 if (hfp_connection->ag_indicators_status_update_bitmap){ 1705 int i; 1706 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1707 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1708 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1709 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1710 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1711 break; 1712 } 1713 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1714 return; 1715 } 1716 } 1717 } 1718 1719 if (hfp_connection->ag_ring){ 1720 hfp_connection->ag_ring = 0; 1721 hfp_connection->command = HFP_CMD_NONE; 1722 hfp_ag_ring(hfp_connection->rfcomm_cid); 1723 return; 1724 } 1725 1726 if (hfp_connection->ag_send_clip){ 1727 hfp_connection->ag_send_clip = 0; 1728 hfp_connection->command = HFP_CMD_NONE; 1729 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1730 return; 1731 } 1732 1733 if (hfp_connection->send_phone_number_for_voice_tag){ 1734 hfp_connection->send_phone_number_for_voice_tag = 0; 1735 hfp_connection->command = HFP_CMD_NONE; 1736 hfp_connection->ok_pending = 1; 1737 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1738 return; 1739 } 1740 1741 if (hfp_connection->send_subscriber_number){ 1742 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1743 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1744 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1745 } else { 1746 hfp_connection->send_subscriber_number = 0; 1747 hfp_connection->next_subscriber_number_to_send = 0; 1748 hfp_ag_ok(hfp_connection->rfcomm_cid); 1749 } 1750 hfp_connection->command = HFP_CMD_NONE; 1751 } 1752 1753 if (hfp_connection->send_microphone_gain){ 1754 hfp_connection->send_microphone_gain = 0; 1755 hfp_connection->command = HFP_CMD_NONE; 1756 hfp_ag_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1757 return; 1758 } 1759 1760 if (hfp_connection->send_speaker_gain){ 1761 hfp_connection->send_speaker_gain = 0; 1762 hfp_connection->command = HFP_CMD_NONE; 1763 hfp_ag_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1764 return; 1765 } 1766 1767 if (hfp_connection->send_ag_status_indicators){ 1768 hfp_connection->send_ag_status_indicators = 0; 1769 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1770 return; 1771 } 1772 1773 int done = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1774 if (!done){ 1775 done = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1776 } 1777 1778 if (!done){ 1779 done = call_setup_state_machine(hfp_connection); 1780 } 1781 1782 if (!done){ 1783 done = hfp_ag_run_for_audio_connection(hfp_connection); 1784 } 1785 1786 if (hfp_connection->command == HFP_CMD_NONE && !done){ 1787 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1788 switch(hfp_connection->state){ 1789 case HFP_W2_DISCONNECT_RFCOMM: 1790 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1791 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1792 break; 1793 default: 1794 break; 1795 } 1796 } 1797 if (done){ 1798 hfp_connection->command = HFP_CMD_NONE; 1799 } 1800 // 1801 if (done) { 1802 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1803 } 1804 } 1805 1806 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1807 int i; 1808 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1809 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1810 if (indicator->uuid == number){ 1811 return indicator; 1812 } 1813 } 1814 return NULL; 1815 } 1816 1817 static void hfp_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1818 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1819 if (!hfp_connection) return; 1820 1821 char last_char = packet[size-1]; 1822 packet[size-1] = 0; 1823 log_info("HFP_RX %s", packet); 1824 packet[size-1] = last_char; 1825 1826 int pos; 1827 for (pos = 0; pos < size ; pos++){ 1828 hfp_parse(hfp_connection, packet[pos], 0); 1829 } 1830 hfp_generic_status_indicator_t * indicator; 1831 int value; 1832 switch(hfp_connection->command){ 1833 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1834 if (hfp_ag_response_and_hold_active){ 1835 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1836 } 1837 hfp_connection->ok_pending = 1; 1838 break; 1839 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1840 value = atoi((char *)&hfp_connection->line_buffer[0]); 1841 log_info("HF Response and Hold: %u", value); 1842 switch(value){ 1843 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1844 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1845 break; 1846 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1847 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1848 break; 1849 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1850 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1851 break; 1852 default: 1853 break; 1854 } 1855 hfp_connection->ok_pending = 1; 1856 break; 1857 case HFP_CMD_HF_INDICATOR_STATUS: 1858 hfp_connection->command = HFP_CMD_NONE; 1859 // find indicator by assigned number 1860 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1861 if (!indicator){ 1862 hfp_connection->send_error = 1; 1863 break; 1864 } 1865 value = atoi((char *)&hfp_connection->line_buffer[0]); 1866 switch (indicator->uuid){ 1867 case 1: // enhanced security 1868 if (value > 1) { 1869 hfp_connection->send_error = 1; 1870 return; 1871 } 1872 log_info("HF Indicator 'enhanced security' set to %u", value); 1873 break; 1874 case 2: // battery level 1875 if (value > 100){ 1876 hfp_connection->send_error = 1; 1877 return; 1878 } 1879 log_info("HF Indicator 'battery' set to %u", value); 1880 break; 1881 default: 1882 log_info("HF Indicator unknown set to %u", value); 1883 break; 1884 } 1885 hfp_connection->ok_pending = 1; 1886 break; 1887 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1888 // expected by SLC state machine 1889 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1890 hfp_connection->send_ag_indicators_segment = 0; 1891 hfp_connection->send_ag_status_indicators = 1; 1892 break; 1893 case HFP_CMD_LIST_CURRENT_CALLS: 1894 hfp_connection->command = HFP_CMD_NONE; 1895 hfp_connection->next_call_index = 0; 1896 hfp_connection->send_status_of_current_calls = 1; 1897 break; 1898 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1899 if (subscriber_numbers_count == 0){ 1900 hfp_ag_ok(hfp_connection->rfcomm_cid); 1901 break; 1902 } 1903 hfp_connection->next_subscriber_number_to_send = 0; 1904 hfp_connection->send_subscriber_number = 1; 1905 break; 1906 case HFP_CMD_TRANSMIT_DTMF_CODES: 1907 hfp_connection->command = HFP_CMD_NONE; 1908 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &hfp_connection->line_buffer[0]); 1909 break; 1910 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1911 hfp_connection->command = HFP_CMD_NONE; 1912 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1913 break; 1914 case HFP_CMD_TURN_OFF_EC_AND_NR: 1915 hfp_connection->command = HFP_CMD_NONE; 1916 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1917 hfp_connection->ok_pending = 1; 1918 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1919 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1920 } else { 1921 hfp_connection->send_error = 1; 1922 } 1923 break; 1924 case HFP_CMD_CALL_ANSWERED: 1925 hfp_connection->command = HFP_CMD_NONE; 1926 log_info("HFP: ATA"); 1927 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1928 break; 1929 case HFP_CMD_HANG_UP_CALL: 1930 hfp_connection->command = HFP_CMD_NONE; 1931 hfp_connection->ok_pending = 1; 1932 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1933 break; 1934 case HFP_CMD_CALL_HOLD: { 1935 // TODO: fully implement this 1936 log_error("HFP: unhandled call hold type %c", hfp_connection->line_buffer[0]); 1937 hfp_connection->command = HFP_CMD_NONE; 1938 hfp_connection->ok_pending = 1; 1939 hfp_connection->call_index = 0; 1940 1941 if (hfp_connection->line_buffer[1] != '\0'){ 1942 hfp_connection->call_index = atoi((char *)&hfp_connection->line_buffer[1]); 1943 } 1944 1945 switch (hfp_connection->line_buffer[0]){ 1946 case '0': 1947 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1948 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1949 break; 1950 case '1': 1951 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1952 // Where both a held and a waiting call exist, the above procedures shall apply to the 1953 // waiting call (i.e., not to the held call) in conflicting situation. 1954 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1955 break; 1956 case '2': 1957 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1958 // Where both a held and a waiting call exist, the above procedures shall apply to the 1959 // waiting call (i.e., not to the held call) in conflicting situation. 1960 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1961 break; 1962 case '3': 1963 // Adds a held call to the conversation. 1964 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1965 break; 1966 case '4': 1967 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1968 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1969 break; 1970 default: 1971 break; 1972 } 1973 break; 1974 } 1975 case HFP_CMD_CALL_PHONE_NUMBER: 1976 hfp_connection->command = HFP_CMD_NONE; 1977 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1978 break; 1979 case HFP_CMD_REDIAL_LAST_NUMBER: 1980 hfp_connection->command = HFP_CMD_NONE; 1981 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1982 break; 1983 case HFP_CMD_ENABLE_CLIP: 1984 hfp_connection->command = HFP_CMD_NONE; 1985 hfp_connection->clip_enabled = hfp_connection->line_buffer[8] != '0'; 1986 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1987 hfp_connection->ok_pending = 1; 1988 break; 1989 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1990 hfp_connection->command = HFP_CMD_NONE; 1991 hfp_connection->call_waiting_notification_enabled = hfp_connection->line_buffer[8] != '0'; 1992 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1993 hfp_connection->ok_pending = 1; 1994 break; 1995 case HFP_CMD_SET_SPEAKER_GAIN: 1996 hfp_connection->command = HFP_CMD_NONE; 1997 hfp_connection->ok_pending = 1; 1998 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 1999 break; 2000 case HFP_CMD_SET_MICROPHONE_GAIN: 2001 hfp_connection->command = HFP_CMD_NONE; 2002 hfp_connection->ok_pending = 1; 2003 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2004 break; 2005 default: 2006 break; 2007 } 2008 } 2009 2010 static void hfp_run(void){ 2011 btstack_linked_list_iterator_t it; 2012 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2013 while (btstack_linked_list_iterator_has_next(&it)){ 2014 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2015 hfp_run_for_context(hfp_connection); 2016 } 2017 } 2018 2019 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2020 switch (packet_type){ 2021 case RFCOMM_DATA_PACKET: 2022 hfp_handle_rfcomm_data(packet_type, channel, packet, size); 2023 break; 2024 case HCI_EVENT_PACKET: 2025 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2026 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2027 hfp_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2028 return; 2029 } 2030 hfp_handle_hci_event(packet_type, channel, packet, size); 2031 break; 2032 default: 2033 break; 2034 } 2035 2036 hfp_run(); 2037 } 2038 2039 2040 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2041 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2042 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2043 return; 2044 } 2045 int i; 2046 hfp_codecs_nr = codecs_nr; 2047 for (i=0; i < codecs_nr; i++){ 2048 hfp_codecs[i] = codecs[i]; 2049 } 2050 } 2051 2052 void hfp_ag_init_supported_features(uint32_t supported_features){ 2053 hfp_supported_features = supported_features; 2054 } 2055 2056 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2057 hfp_ag_indicators_nr = ag_indicators_nr; 2058 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2059 } 2060 2061 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2062 if (hf_indicators_nr > HFP_MAX_NUM_HF_INDICATORS) return; 2063 hfp_generic_status_indicators_nr = hf_indicators_nr; 2064 memcpy(hfp_generic_status_indicators, hf_indicators, hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2065 } 2066 2067 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2068 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2069 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2070 } 2071 2072 2073 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2074 // register for HCI events 2075 hci_event_callback_registration.callback = &packet_handler; 2076 hci_add_event_handler(&hci_event_callback_registration); 2077 2078 rfcomm_register_service(&packet_handler, rfcomm_channel_nr, 0xffff); 2079 2080 hfp_ag_response_and_hold_active = 0; 2081 subscriber_numbers = NULL; 2082 subscriber_numbers_count = 0; 2083 2084 hfp_set_packet_handler_for_rfcomm_connections(&packet_handler); 2085 2086 hfp_gsm_init(); 2087 } 2088 2089 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2090 hfp_establish_service_level_connection(bd_addr, SDP_Handsfree); 2091 } 2092 2093 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2094 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2095 if (!hfp_connection){ 2096 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2097 return; 2098 } 2099 hfp_release_service_level_connection(hfp_connection); 2100 hfp_run_for_context(hfp_connection); 2101 } 2102 2103 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2104 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2105 if (!hfp_connection){ 2106 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2107 return; 2108 } 2109 hfp_connection->extended_audio_gateway_error = 0; 2110 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2111 return; 2112 } 2113 hfp_connection->extended_audio_gateway_error = error; 2114 hfp_run_for_context(hfp_connection); 2115 } 2116 2117 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2118 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2119 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2120 2121 hfp_connection->establish_audio_connection = 1; 2122 2123 if (!has_codec_negotiation_feature(hfp_connection)){ 2124 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2125 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2126 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2127 // now, pick link settings 2128 hfp_init_link_settings(hfp_connection); 2129 } 2130 2131 switch (hfp_connection->codecs_state){ 2132 case HFP_CODECS_IDLE: 2133 case HFP_CODECS_RECEIVED_LIST: 2134 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2135 case HFP_CODECS_ERROR: 2136 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2137 break; 2138 default: 2139 break; 2140 } 2141 } 2142 2143 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2144 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2145 if (!hfp_connection){ 2146 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2147 return; 2148 } 2149 hfp_connection->establish_audio_connection = 0; 2150 hfp_ag_setup_audio_connection(hfp_connection); 2151 hfp_run_for_context(hfp_connection); 2152 } 2153 2154 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2155 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2156 if (!hfp_connection){ 2157 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2158 return; 2159 } 2160 hfp_release_audio_connection(hfp_connection); 2161 hfp_run_for_context(hfp_connection); 2162 } 2163 2164 /** 2165 * @brief Enable in-band ring tone 2166 */ 2167 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2168 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2169 return; 2170 } 2171 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2172 2173 btstack_linked_list_iterator_t it; 2174 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2175 while (btstack_linked_list_iterator_has_next(&it)){ 2176 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2177 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2178 hfp_run_for_context(hfp_connection); 2179 } 2180 } 2181 2182 /** 2183 * @brief Called from GSM 2184 */ 2185 void hfp_ag_incoming_call(void){ 2186 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2187 } 2188 2189 /** 2190 * @brief number is stored. 2191 */ 2192 void hfp_ag_set_clip(uint8_t type, const char * number){ 2193 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2194 } 2195 2196 void hfp_ag_call_dropped(void){ 2197 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2198 } 2199 2200 // call from AG UI 2201 void hfp_ag_answer_incoming_call(void){ 2202 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2203 } 2204 2205 void hfp_ag_join_held_call(void){ 2206 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2207 } 2208 2209 void hfp_ag_terminate_call(void){ 2210 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2211 } 2212 2213 void hfp_ag_outgoing_call_ringing(void){ 2214 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2215 } 2216 2217 void hfp_ag_outgoing_call_established(void){ 2218 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2219 } 2220 2221 void hfp_ag_outgoing_call_rejected(void){ 2222 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2223 } 2224 2225 void hfp_ag_outgoing_call_accepted(void){ 2226 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2227 } 2228 2229 void hfp_ag_hold_incoming_call(void){ 2230 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2231 } 2232 2233 void hfp_ag_accept_held_incoming_call(void) { 2234 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2235 } 2236 2237 void hfp_ag_reject_held_incoming_call(void){ 2238 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2239 } 2240 2241 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2242 int indicator_index = get_ag_indicator_index_for_name(name); 2243 if (indicator_index < 0) return; 2244 hfp_ag_indicators[indicator_index].status = value; 2245 2246 2247 btstack_linked_list_iterator_t it; 2248 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2249 while (btstack_linked_list_iterator_has_next(&it)){ 2250 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2251 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2252 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2253 continue; 2254 } 2255 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2256 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2257 hfp_run_for_context(hfp_connection); 2258 } 2259 } 2260 2261 void hfp_ag_set_registration_status(int status){ 2262 hfp_ag_set_ag_indicator("service", status); 2263 } 2264 2265 void hfp_ag_set_signal_strength(int strength){ 2266 hfp_ag_set_ag_indicator("signal", strength); 2267 } 2268 2269 void hfp_ag_set_roaming_status(int status){ 2270 hfp_ag_set_ag_indicator("roam", status); 2271 } 2272 2273 void hfp_ag_set_battery_level(int level){ 2274 hfp_ag_set_ag_indicator("battchg", level); 2275 } 2276 2277 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2278 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2279 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2280 if (!hfp_connection){ 2281 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2282 return; 2283 } 2284 2285 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2286 log_info("AG cannot acivate voice recognition - not supported by HF"); 2287 return; 2288 } 2289 2290 if (activate){ 2291 hfp_ag_establish_audio_connection(acl_handle); 2292 } 2293 2294 hfp_connection->ag_activate_voice_recognition = activate; 2295 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2296 hfp_run_for_context(hfp_connection); 2297 } 2298 2299 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2300 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2301 if (!hfp_connection){ 2302 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2303 return; 2304 } 2305 if (hfp_connection->microphone_gain != gain){ 2306 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2307 hfp_connection->microphone_gain = gain; 2308 hfp_connection->send_microphone_gain = 1; 2309 } 2310 hfp_run_for_context(hfp_connection); 2311 } 2312 2313 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2314 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2315 if (!hfp_connection){ 2316 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2317 return; 2318 } 2319 if (hfp_connection->speaker_gain != gain){ 2320 hfp_connection->speaker_gain = gain; 2321 hfp_connection->send_speaker_gain = 1; 2322 } 2323 hfp_run_for_context(hfp_connection); 2324 } 2325 2326 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2327 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2328 if (!hfp_connection){ 2329 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2330 return; 2331 } 2332 hfp_ag_set_clip(0, number); 2333 hfp_connection->send_phone_number_for_voice_tag = 1; 2334 } 2335 2336 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2337 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2338 if (!hfp_connection){ 2339 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2340 return; 2341 } 2342 hfp_connection->send_error = 1; 2343 } 2344 2345 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2346 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2347 if (!hfp_connection){ 2348 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2349 return; 2350 } 2351 hfp_connection->ok_pending = 1; 2352 } 2353 2354 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2355 subscriber_numbers = numbers; 2356 subscriber_numbers_count = numbers_count; 2357 } 2358 2359 void hfp_ag_clear_last_dialed_number(void){ 2360 hfp_gsm_clear_last_dialed_number(); 2361 } 2362 2363 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2364 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2365 if (!hfp_connection){ 2366 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2367 return; 2368 } 2369 if (!hfp_connection->call_waiting_notification_enabled) return; 2370 2371 hfp_connection->ag_notify_incoming_call_waiting = 1; 2372 hfp_run_for_context(hfp_connection); 2373 } 2374 2375