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 switch (hfp_connection->negotiated_codec){ 545 default: 546 case HFP_CODEC_CVSD: 547 if (hci_remote_esco_supported(hfp_connection->acl_handle)){ 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 } 554 break; 555 case HFP_CODEC_MSBC: 556 if (hci_remote_esco_supported(hfp_connection->acl_handle)){ 557 hfp_connection->link_setting = HFP_LINK_SETTINGS_T2; 558 } 559 break; 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 if (has_codec_negotiation_feature(hfp_connection)){ 660 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 661 } else { 662 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 663 } 664 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 665 return 1; 666 default: 667 break; 668 } 669 break; 670 case HFP_CMD_AVAILABLE_CODECS: 671 done = codecs_exchange_state_machine(hfp_connection); 672 673 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 674 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 675 } 676 return done; 677 678 case HFP_CMD_RETRIEVE_AG_INDICATORS: 679 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 680 // HF requested AG Indicators and we did expect it 681 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 682 // continue below in state switch 683 } 684 break; 685 686 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 687 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 688 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 689 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 690 return 1; 691 692 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 693 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 694 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 695 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 696 } else if (has_hf_indicators_feature(hfp_connection)){ 697 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 698 } else { 699 hfp_ag_slc_established(hfp_connection); 700 } 701 hfp_ag_set_indicator_status_update_cmd(hfp_connection->rfcomm_cid, 1); 702 return 1; 703 704 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 705 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 706 if (has_hf_indicators_feature(hfp_connection)){ 707 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 708 } 709 hfp_ag_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 710 if (!has_hf_indicators_feature(hfp_connection)){ 711 hfp_ag_slc_established(hfp_connection); 712 } 713 return 1; 714 715 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 716 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 717 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 718 hfp_ag_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 719 return 1; 720 721 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 722 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 723 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 724 hfp_ag_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 725 return 1; 726 727 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 728 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 729 hfp_ag_slc_established(hfp_connection); 730 hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 731 return 1; 732 default: 733 break; 734 } 735 736 switch (hfp_connection->state){ 737 case HFP_RETRIEVE_INDICATORS: { 738 int next_segment = hfp_ag_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 739 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 740 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 741 if (next_segment < num_segments){ 742 // prepare sending of next segment 743 hfp_connection->send_ag_indicators_segment = next_segment; 744 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 745 } else { 746 // done, go to next state 747 hfp_connection->send_ag_indicators_segment = 0; 748 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 749 } 750 return 1; 751 } 752 default: 753 break; 754 } 755 756 return done; 757 } 758 759 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 760 761 int done = codecs_exchange_state_machine(hfp_connection); 762 if (done) return done; 763 764 switch(hfp_connection->command){ 765 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 766 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 767 hfp_ag_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 768 return 1; 769 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 770 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 771 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 772 hfp_ag_ok(hfp_connection->rfcomm_cid); 773 hfp_ag_setup_audio_connection(hfp_connection); 774 } else { 775 hfp_ag_error(hfp_connection->rfcomm_cid); 776 } 777 return 1; 778 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 779 hfp_ag_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 780 return 1; 781 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 782 hfp_ag_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 783 return 1; 784 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 785 if (hfp_connection->network_operator.format != 0){ 786 hfp_ag_error(hfp_connection->rfcomm_cid); 787 } else { 788 hfp_ag_ok(hfp_connection->rfcomm_cid); 789 } 790 return 1; 791 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 792 hfp_ag_ok(hfp_connection->rfcomm_cid); 793 return 1; 794 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 795 if (hfp_connection->extended_audio_gateway_error){ 796 hfp_connection->extended_audio_gateway_error = 0; 797 hfp_ag_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 798 return 1; 799 } 800 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 801 hfp_ag_ok(hfp_connection->rfcomm_cid); 802 return 1; 803 default: 804 break; 805 } 806 return 0; 807 } 808 809 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 810 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 811 hfp_connection->state > HFP_W2_DISCONNECT_SCO) return 0; 812 813 814 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->release_audio_connection){ 815 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 816 hfp_connection->release_audio_connection = 0; 817 gap_disconnect(hfp_connection->sco_handle); 818 return 1; 819 } 820 821 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 822 823 // run codecs exchange 824 int done = codecs_exchange_state_machine(hfp_connection); 825 if (done) return done; 826 827 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return done; 828 if (hfp_connection->establish_audio_connection){ 829 hfp_connection->state = HFP_W4_SCO_CONNECTED; 830 hfp_connection->establish_audio_connection = 0; 831 hfp_setup_synchronous_connection(hfp_connection); 832 return 1; 833 } 834 return 0; 835 } 836 837 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 838 btstack_linked_list_iterator_t it; 839 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 840 841 while (btstack_linked_list_iterator_has_next(&it)){ 842 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 843 if ( & hfp_connection->hfp_timeout == ts) { 844 return hfp_connection; 845 } 846 } 847 return NULL; 848 } 849 850 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 851 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 852 if (!hfp_connection) return; 853 854 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 855 hfp_connection->ag_ring = 1; 856 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 857 858 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 859 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 860 861 hfp_run_for_context(hfp_connection); 862 } 863 864 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 865 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 866 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 867 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 868 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 869 } 870 871 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 872 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 873 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 874 } 875 876 // 877 // transitition implementations for hfp_ag_call_state_machine 878 // 879 880 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 881 if (use_in_band_tone()){ 882 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 883 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 884 } else { 885 hfp_timeout_start(hfp_connection); 886 hfp_connection->ag_ring = 1; 887 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 888 hfp_connection->call_state = HFP_CALL_RINGING; 889 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 890 } 891 } 892 893 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 894 hfp_connection->ag_ring = 0; 895 hfp_connection->ag_send_clip = 0; 896 hfp_timeout_stop(hfp_connection); 897 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_STOP_RINGINIG); 898 } 899 900 static void hfp_ag_trigger_incoming_call(void){ 901 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 902 if (indicator_index < 0) return; 903 904 btstack_linked_list_iterator_t it; 905 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 906 while (btstack_linked_list_iterator_has_next(&it)){ 907 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 908 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 909 if (hfp_connection->call_state == HFP_CALL_IDLE){ 910 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 911 hfp_ag_hf_start_ringing(hfp_connection); 912 } 913 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 914 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 915 } 916 hfp_run_for_context(hfp_connection); 917 } 918 } 919 920 static void hfp_ag_transfer_callsetup_state(void){ 921 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 922 if (indicator_index < 0) return; 923 924 btstack_linked_list_iterator_t it; 925 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 926 while (btstack_linked_list_iterator_has_next(&it)){ 927 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 928 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 929 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 930 hfp_run_for_context(hfp_connection); 931 } 932 } 933 934 static void hfp_ag_transfer_call_state(void){ 935 int indicator_index = get_ag_indicator_index_for_name("call"); 936 if (indicator_index < 0) return; 937 938 btstack_linked_list_iterator_t it; 939 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 940 while (btstack_linked_list_iterator_has_next(&it)){ 941 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 942 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 943 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 944 hfp_run_for_context(hfp_connection); 945 } 946 } 947 948 static void hfp_ag_transfer_callheld_state(void){ 949 int indicator_index = get_ag_indicator_index_for_name("callheld"); 950 if (indicator_index < 0) return; 951 952 btstack_linked_list_iterator_t it; 953 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 954 while (btstack_linked_list_iterator_has_next(&it)){ 955 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 956 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 957 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 958 hfp_run_for_context(hfp_connection); 959 } 960 } 961 962 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 963 964 int call_indicator_index = get_ag_indicator_index_for_name("call"); 965 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 966 967 btstack_linked_list_iterator_t it; 968 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 969 while (btstack_linked_list_iterator_has_next(&it)){ 970 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 971 if (hfp_connection->call_state != HFP_CALL_RINGING && 972 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 973 974 hfp_ag_hf_stop_ringing(hfp_connection); 975 if (hfp_connection == source){ 976 hfp_connection->ok_pending = 1; 977 978 if (use_in_band_tone()){ 979 hfp_connection->call_state = HFP_CALL_ACTIVE; 980 } else { 981 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 982 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 983 } 984 985 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 986 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 987 988 } else { 989 hfp_connection->call_state = HFP_CALL_IDLE; 990 } 991 hfp_run_for_context(hfp_connection); 992 } 993 } 994 995 static void hfp_ag_ag_accept_call(void){ 996 997 int call_indicator_index = get_ag_indicator_index_for_name("call"); 998 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 999 1000 btstack_linked_list_iterator_t it; 1001 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1002 while (btstack_linked_list_iterator_has_next(&it)){ 1003 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1004 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 1005 1006 hfp_ag_hf_stop_ringing(hfp_connection); 1007 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1008 1009 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1010 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1011 1012 hfp_run_for_context(hfp_connection); 1013 break; // only single 1014 } 1015 } 1016 1017 static void hfp_ag_trigger_reject_call(void){ 1018 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1019 btstack_linked_list_iterator_t it; 1020 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1021 while (btstack_linked_list_iterator_has_next(&it)){ 1022 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1023 if (connection->call_state != HFP_CALL_RINGING && 1024 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1025 hfp_ag_hf_stop_ringing(connection); 1026 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1027 connection->call_state = HFP_CALL_IDLE; 1028 hfp_run_for_context(connection); 1029 } 1030 } 1031 1032 static void hfp_ag_trigger_terminate_call(void){ 1033 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1034 1035 btstack_linked_list_iterator_t it; 1036 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1037 while (btstack_linked_list_iterator_has_next(&it)){ 1038 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1039 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1040 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1041 hfp_connection->call_state = HFP_CALL_IDLE; 1042 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1043 hfp_connection->release_audio_connection = 1; 1044 hfp_run_for_context(hfp_connection); 1045 } 1046 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_TERMINATED); 1047 } 1048 1049 static void hfp_ag_set_callsetup_indicator(void){ 1050 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1051 if (!indicator){ 1052 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1053 return; 1054 }; 1055 indicator->status = hfp_gsm_callsetup_status(); 1056 } 1057 1058 static void hfp_ag_set_callheld_indicator(void){ 1059 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1060 if (!indicator){ 1061 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1062 return; 1063 }; 1064 indicator->status = hfp_gsm_callheld_status(); 1065 } 1066 1067 static void hfp_ag_set_call_indicator(void){ 1068 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1069 if (!indicator){ 1070 log_error("hfp_ag_set_call_state: call indicator is missing"); 1071 return; 1072 }; 1073 indicator->status = hfp_gsm_call_status(); 1074 } 1075 1076 static void hfp_ag_stop_ringing(void){ 1077 btstack_linked_list_iterator_t it; 1078 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1079 while (btstack_linked_list_iterator_has_next(&it)){ 1080 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1081 if (hfp_connection->call_state != HFP_CALL_RINGING && 1082 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1083 hfp_ag_hf_stop_ringing(hfp_connection); 1084 } 1085 } 1086 1087 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1088 btstack_linked_list_iterator_t it; 1089 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1090 while (btstack_linked_list_iterator_has_next(&it)){ 1091 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1092 if (hfp_connection->call_state == call_state) return hfp_connection; 1093 } 1094 return NULL; 1095 } 1096 1097 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1098 btstack_linked_list_iterator_t it; 1099 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1100 while (btstack_linked_list_iterator_has_next(&it)){ 1101 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1102 hfp_connection->send_response_and_hold_status = state + 1; 1103 } 1104 } 1105 1106 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1107 int indicator_index; 1108 switch (hfp_connection->call_state){ 1109 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1110 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1111 // we got event: audio hfp_connection established 1112 hfp_timeout_start(hfp_connection); 1113 hfp_connection->ag_ring = 1; 1114 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1115 hfp_connection->call_state = HFP_CALL_RINGING; 1116 hfp_connection->call_state = HFP_CALL_RINGING; 1117 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 1118 break; 1119 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1120 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1121 // we got event: audio hfp_connection established 1122 hfp_connection->call_state = HFP_CALL_ACTIVE; 1123 break; 1124 case HFP_CALL_W2_SEND_CALL_WAITING: 1125 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1126 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1127 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1128 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1129 break; 1130 default: 1131 break; 1132 } 1133 return 0; 1134 } 1135 // hfp_connection is used to identify originating HF 1136 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1137 int indicator_index; 1138 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1139 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1140 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1141 1142 //printf("hfp_ag_call_sm event %d \n", event); 1143 switch (event){ 1144 case HFP_AG_INCOMING_CALL: 1145 switch (hfp_gsm_call_status()){ 1146 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1147 switch (hfp_gsm_callsetup_status()){ 1148 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1149 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1150 hfp_ag_set_callsetup_indicator(); 1151 hfp_ag_trigger_incoming_call(); 1152 log_info("AG rings"); 1153 break; 1154 default: 1155 break; 1156 } 1157 break; 1158 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1159 switch (hfp_gsm_callsetup_status()){ 1160 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1161 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1162 hfp_ag_set_callsetup_indicator(); 1163 hfp_ag_trigger_incoming_call(); 1164 log_info("AG call waiting"); 1165 break; 1166 default: 1167 break; 1168 } 1169 break; 1170 } 1171 break; 1172 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1173 switch (hfp_gsm_call_status()){ 1174 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1175 switch (hfp_gsm_callsetup_status()){ 1176 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1177 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1178 hfp_ag_set_call_indicator(); 1179 hfp_ag_set_callsetup_indicator(); 1180 hfp_ag_ag_accept_call(); 1181 log_info("AG answers call, accept call by GSM"); 1182 break; 1183 default: 1184 break; 1185 } 1186 break; 1187 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1188 switch (hfp_gsm_callsetup_status()){ 1189 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1190 log_info("AG: current call is placed on hold, incoming call gets active"); 1191 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1192 hfp_ag_set_callsetup_indicator(); 1193 hfp_ag_set_callheld_indicator(); 1194 hfp_ag_transfer_callsetup_state(); 1195 hfp_ag_transfer_callheld_state(); 1196 break; 1197 default: 1198 break; 1199 } 1200 break; 1201 } 1202 break; 1203 1204 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1205 switch (hfp_gsm_call_status()){ 1206 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1207 switch (hfp_gsm_callheld_status()){ 1208 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1209 log_info("AG: joining held call with active call"); 1210 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1211 hfp_ag_set_callheld_indicator(); 1212 hfp_ag_transfer_callheld_state(); 1213 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1214 break; 1215 default: 1216 break; 1217 } 1218 break; 1219 default: 1220 break; 1221 } 1222 break; 1223 1224 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1225 switch (hfp_gsm_call_status()){ 1226 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1227 switch (hfp_gsm_callsetup_status()){ 1228 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1229 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1230 hfp_ag_set_callsetup_indicator(); 1231 hfp_ag_set_call_indicator(); 1232 hfp_ag_hf_accept_call(hfp_connection); 1233 log_info("HF answers call, accept call by GSM"); 1234 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_ANSWERED); 1235 break; 1236 default: 1237 break; 1238 } 1239 break; 1240 default: 1241 break; 1242 } 1243 break; 1244 1245 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1246 switch (hfp_gsm_call_status()){ 1247 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1248 switch (hfp_gsm_callsetup_status()){ 1249 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1250 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1251 hfp_ag_response_and_hold_active = 1; 1252 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1253 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1254 // as with regualr call 1255 hfp_ag_set_call_indicator(); 1256 hfp_ag_set_callsetup_indicator(); 1257 hfp_ag_ag_accept_call(); 1258 log_info("AG response and hold - hold by AG"); 1259 break; 1260 default: 1261 break; 1262 } 1263 break; 1264 default: 1265 break; 1266 } 1267 break; 1268 1269 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1270 switch (hfp_gsm_call_status()){ 1271 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1272 switch (hfp_gsm_callsetup_status()){ 1273 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1274 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1275 hfp_ag_response_and_hold_active = 1; 1276 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1277 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1278 // as with regualr call 1279 hfp_ag_set_call_indicator(); 1280 hfp_ag_set_callsetup_indicator(); 1281 hfp_ag_hf_accept_call(hfp_connection); 1282 log_info("AG response and hold - hold by HF"); 1283 break; 1284 default: 1285 break; 1286 } 1287 break; 1288 default: 1289 break; 1290 } 1291 break; 1292 1293 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1294 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1295 if (!hfp_ag_response_and_hold_active) break; 1296 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1297 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1298 hfp_ag_response_and_hold_active = 0; 1299 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1300 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1301 log_info("Held Call accepted and active"); 1302 break; 1303 1304 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1305 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1306 if (!hfp_ag_response_and_hold_active) break; 1307 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1308 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1309 hfp_ag_response_and_hold_active = 0; 1310 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1311 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1312 // from terminate by ag 1313 hfp_ag_set_call_indicator(); 1314 hfp_ag_trigger_terminate_call(); 1315 break; 1316 1317 case HFP_AG_TERMINATE_CALL_BY_HF: 1318 switch (hfp_gsm_call_status()){ 1319 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1320 switch (hfp_gsm_callsetup_status()){ 1321 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1322 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1323 hfp_ag_set_callsetup_indicator(); 1324 hfp_ag_transfer_callsetup_state(); 1325 hfp_ag_trigger_reject_call(); 1326 log_info("HF Rejected Incoming call, AG terminate call"); 1327 break; 1328 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1329 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1330 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1331 hfp_ag_set_callsetup_indicator(); 1332 hfp_ag_transfer_callsetup_state(); 1333 log_info("AG terminate outgoing call process"); 1334 default: 1335 break; 1336 } 1337 break; 1338 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1339 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1340 hfp_ag_set_call_indicator(); 1341 hfp_ag_transfer_call_state(); 1342 hfp_connection->call_state = HFP_CALL_IDLE; 1343 log_info("AG terminate call"); 1344 break; 1345 } 1346 break; 1347 1348 case HFP_AG_TERMINATE_CALL_BY_AG: 1349 switch (hfp_gsm_call_status()){ 1350 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1351 switch (hfp_gsm_callsetup_status()){ 1352 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1353 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1354 hfp_ag_set_callsetup_indicator(); 1355 hfp_ag_trigger_reject_call(); 1356 log_info("AG Rejected Incoming call, AG terminate call"); 1357 break; 1358 default: 1359 break; 1360 } 1361 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1362 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1363 hfp_ag_set_callsetup_indicator(); 1364 hfp_ag_set_call_indicator(); 1365 hfp_ag_trigger_terminate_call(); 1366 log_info("AG terminate call"); 1367 break; 1368 default: 1369 break; 1370 } 1371 break; 1372 case HFP_AG_CALL_DROPPED: 1373 switch (hfp_gsm_call_status()){ 1374 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1375 switch (hfp_gsm_callsetup_status()){ 1376 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1377 hfp_ag_stop_ringing(); 1378 log_info("Incoming call interrupted"); 1379 break; 1380 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1381 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1382 log_info("Outgoing call interrupted\n"); 1383 log_info("AG notify call dropped\n"); 1384 break; 1385 default: 1386 break; 1387 } 1388 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1389 hfp_ag_set_callsetup_indicator(); 1390 hfp_ag_transfer_callsetup_state(); 1391 break; 1392 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1393 if (hfp_ag_response_and_hold_active) { 1394 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1395 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1396 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1397 } 1398 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1399 hfp_ag_set_callsetup_indicator(); 1400 hfp_ag_set_call_indicator(); 1401 hfp_ag_trigger_terminate_call(); 1402 log_info("AG notify call dropped"); 1403 break; 1404 default: 1405 break; 1406 } 1407 break; 1408 1409 case HFP_AG_OUTGOING_CALL_INITIATED: 1410 // directly reject call if number of free slots is exceeded 1411 if (!hfp_gsm_call_possible()){ 1412 hfp_connection->send_error = 1; 1413 hfp_run_for_context(hfp_connection); 1414 break; 1415 } 1416 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1417 1418 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1419 1420 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1421 break; 1422 1423 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1424 // directly reject call if number of free slots is exceeded 1425 if (!hfp_gsm_call_possible()){ 1426 hfp_connection->send_error = 1; 1427 hfp_run_for_context(hfp_connection); 1428 break; 1429 } 1430 1431 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1432 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1433 1434 log_info("Redial last number"); 1435 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1436 1437 if (strlen(last_dialed_number) > 0){ 1438 log_info("Last number exists: accept call"); 1439 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1440 } else { 1441 log_info("log_infoLast number missing: reject call"); 1442 hfp_ag_outgoing_call_rejected(); 1443 } 1444 break; 1445 } 1446 case HFP_AG_OUTGOING_CALL_REJECTED: 1447 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1448 if (!hfp_connection){ 1449 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1450 break; 1451 } 1452 1453 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1454 hfp_connection->call_state = HFP_CALL_IDLE; 1455 hfp_connection->send_error = 1; 1456 hfp_run_for_context(hfp_connection); 1457 break; 1458 1459 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1460 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1461 if (!hfp_connection){ 1462 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1463 break; 1464 } 1465 1466 hfp_connection->ok_pending = 1; 1467 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1468 1469 // trigger callsetup to be 1470 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1471 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1472 1473 hfp_ag_set_callsetup_indicator(); 1474 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1475 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1476 1477 // put current call on hold if active 1478 if (put_call_on_hold){ 1479 log_info("AG putting current call on hold for new outgoing calllog_info"); 1480 hfp_ag_set_callheld_indicator(); 1481 indicator_index = get_ag_indicator_index_for_name("callheld"); 1482 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1483 } 1484 1485 // start audio if needed 1486 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1487 break; 1488 } 1489 case HFP_AG_OUTGOING_CALL_RINGING: 1490 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1491 if (!hfp_connection){ 1492 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1493 break; 1494 } 1495 1496 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1497 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1498 hfp_ag_set_callsetup_indicator(); 1499 hfp_ag_transfer_callsetup_state(); 1500 break; 1501 1502 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1503 // get outgoing call 1504 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1505 if (!hfp_connection){ 1506 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1507 } 1508 if (!hfp_connection){ 1509 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1510 break; 1511 } 1512 1513 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1514 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1515 hfp_connection->call_state = HFP_CALL_ACTIVE; 1516 hfp_ag_set_callsetup_indicator(); 1517 hfp_ag_set_call_indicator(); 1518 hfp_ag_transfer_call_state(); 1519 hfp_ag_transfer_callsetup_state(); 1520 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1521 hfp_ag_set_callheld_indicator(); 1522 hfp_ag_transfer_callheld_state(); 1523 } 1524 break; 1525 } 1526 1527 case HFP_AG_CALL_HOLD_USER_BUSY: 1528 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1529 hfp_ag_set_callsetup_indicator(); 1530 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1531 hfp_connection->call_state = HFP_CALL_ACTIVE; 1532 log_info("AG: Call Waiting, User Busy"); 1533 break; 1534 1535 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1536 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1537 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1538 1539 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1540 if (call_held || call_setup_in_progress){ 1541 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1542 1543 } 1544 1545 if (call_setup_in_progress){ 1546 log_info("AG: Call Dropped, Accept new call"); 1547 hfp_ag_set_callsetup_indicator(); 1548 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1549 } else { 1550 log_info("AG: Call Dropped, Resume held call"); 1551 } 1552 if (call_held){ 1553 hfp_ag_set_callheld_indicator(); 1554 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1555 } 1556 1557 hfp_connection->call_state = HFP_CALL_ACTIVE; 1558 break; 1559 } 1560 1561 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1562 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1563 // only update if callsetup changed 1564 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1565 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1566 1567 if (call_setup_in_progress){ 1568 log_info("AG: Call on Hold, Accept new call"); 1569 hfp_ag_set_callsetup_indicator(); 1570 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1571 } else { 1572 log_info("AG: Swap calls"); 1573 } 1574 1575 hfp_ag_set_callheld_indicator(); 1576 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1577 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1578 hfp_connection->call_state = HFP_CALL_ACTIVE; 1579 break; 1580 } 1581 1582 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1583 // Adds a held call to the conversation. 1584 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1585 log_info("AG: Join 3-way-call"); 1586 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1587 hfp_ag_set_callheld_indicator(); 1588 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1589 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1590 } 1591 hfp_connection->call_state = HFP_CALL_ACTIVE; 1592 break; 1593 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1594 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1595 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1596 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1597 hfp_ag_set_call_indicator(); 1598 hfp_ag_set_callheld_indicator(); 1599 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1600 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1601 hfp_connection->call_state = HFP_CALL_IDLE; 1602 break; 1603 1604 default: 1605 break; 1606 } 1607 1608 1609 } 1610 1611 1612 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1613 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1614 if (!active_call) return; 1615 1616 int idx = active_call->index; 1617 hfp_enhanced_call_dir_t dir = active_call->direction; 1618 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1619 hfp_enhanced_call_mode_t mode = active_call->mode; 1620 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1621 uint8_t type = active_call->clip_type; 1622 char * number = active_call->clip_number; 1623 1624 char buffer[100]; 1625 // TODO: check length of a buffer, to fit the MTU 1626 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1627 if (number){ 1628 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ", \"%s\",%u", number, type); 1629 } 1630 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1631 log_info("hfp_ag_send_current_call_status 000 index %d, dir %d, status %d, mode %d, mpty %d, type %d, number %s", idx, dir, status, 1632 mode, mpty, type, number); 1633 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1634 } 1635 1636 static void hfp_run_for_context(hfp_connection_t *hfp_connection){ 1637 1638 log_info("hfp_run_for_context %p", hfp_connection); 1639 1640 if (!hfp_connection) return; 1641 1642 if (!hfp_connection->rfcomm_cid) return; 1643 1644 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1645 log_info("hfp_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1646 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1647 return; 1648 } 1649 1650 if (hfp_connection->send_status_of_current_calls){ 1651 hfp_connection->ok_pending = 0; 1652 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1653 hfp_connection->next_call_index++; 1654 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1655 } else { 1656 hfp_connection->next_call_index = 0; 1657 hfp_connection->ok_pending = 1; 1658 hfp_connection->send_status_of_current_calls = 0; 1659 } 1660 return; 1661 } 1662 1663 if (hfp_connection->ag_notify_incoming_call_waiting){ 1664 hfp_connection->ag_notify_incoming_call_waiting = 0; 1665 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1666 return; 1667 } 1668 1669 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1670 hfp_connection->ok_pending = 0; 1671 hfp_connection->send_error = 0; 1672 hfp_connection->command = HFP_CMD_NONE; 1673 hfp_ag_error(hfp_connection->rfcomm_cid); 1674 return; 1675 } 1676 1677 if (hfp_connection->send_error){ 1678 hfp_connection->send_error = 0; 1679 hfp_connection->command = HFP_CMD_NONE; 1680 hfp_ag_error(hfp_connection->rfcomm_cid); 1681 return; 1682 } 1683 1684 // note: before update AG indicators and ok_pending 1685 if (hfp_connection->send_response_and_hold_status){ 1686 int status = hfp_connection->send_response_and_hold_status - 1; 1687 hfp_connection->send_response_and_hold_status = 0; 1688 hfp_ag_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1689 return; 1690 } 1691 1692 if (hfp_connection->ok_pending){ 1693 hfp_connection->ok_pending = 0; 1694 hfp_connection->command = HFP_CMD_NONE; 1695 hfp_ag_ok(hfp_connection->rfcomm_cid); 1696 return; 1697 } 1698 1699 // update AG indicators 1700 if (hfp_connection->ag_indicators_status_update_bitmap){ 1701 int i; 1702 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1703 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1704 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1705 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1706 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1707 break; 1708 } 1709 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1710 return; 1711 } 1712 } 1713 } 1714 1715 if (hfp_connection->ag_ring){ 1716 hfp_connection->ag_ring = 0; 1717 hfp_connection->command = HFP_CMD_NONE; 1718 hfp_ag_ring(hfp_connection->rfcomm_cid); 1719 return; 1720 } 1721 1722 if (hfp_connection->ag_send_clip){ 1723 hfp_connection->ag_send_clip = 0; 1724 hfp_connection->command = HFP_CMD_NONE; 1725 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1726 return; 1727 } 1728 1729 if (hfp_connection->send_phone_number_for_voice_tag){ 1730 hfp_connection->send_phone_number_for_voice_tag = 0; 1731 hfp_connection->command = HFP_CMD_NONE; 1732 hfp_connection->ok_pending = 1; 1733 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1734 return; 1735 } 1736 1737 if (hfp_connection->send_subscriber_number){ 1738 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1739 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1740 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1741 } else { 1742 hfp_connection->send_subscriber_number = 0; 1743 hfp_connection->next_subscriber_number_to_send = 0; 1744 hfp_ag_ok(hfp_connection->rfcomm_cid); 1745 } 1746 hfp_connection->command = HFP_CMD_NONE; 1747 } 1748 1749 if (hfp_connection->send_microphone_gain){ 1750 hfp_connection->send_microphone_gain = 0; 1751 hfp_connection->command = HFP_CMD_NONE; 1752 hfp_ag_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1753 return; 1754 } 1755 1756 if (hfp_connection->send_speaker_gain){ 1757 hfp_connection->send_speaker_gain = 0; 1758 hfp_connection->command = HFP_CMD_NONE; 1759 hfp_ag_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1760 return; 1761 } 1762 1763 if (hfp_connection->send_ag_status_indicators){ 1764 hfp_connection->send_ag_status_indicators = 0; 1765 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1766 return; 1767 } 1768 1769 int done = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1770 if (!done){ 1771 done = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1772 } 1773 1774 if (!done){ 1775 done = call_setup_state_machine(hfp_connection); 1776 } 1777 1778 if (!done){ 1779 done = hfp_ag_run_for_audio_connection(hfp_connection); 1780 } 1781 1782 if (hfp_connection->command == HFP_CMD_NONE && !done){ 1783 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1784 switch(hfp_connection->state){ 1785 case HFP_W2_DISCONNECT_RFCOMM: 1786 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1787 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1788 break; 1789 default: 1790 break; 1791 } 1792 } 1793 if (done){ 1794 hfp_connection->command = HFP_CMD_NONE; 1795 } 1796 // 1797 if (done) { 1798 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1799 } 1800 } 1801 1802 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1803 int i; 1804 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1805 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1806 if (indicator->uuid == number){ 1807 return indicator; 1808 } 1809 } 1810 return NULL; 1811 } 1812 1813 static void hfp_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1814 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1815 if (!hfp_connection) return; 1816 1817 char last_char = packet[size-1]; 1818 packet[size-1] = 0; 1819 log_info("HFP_RX %s", packet); 1820 packet[size-1] = last_char; 1821 1822 int pos; 1823 for (pos = 0; pos < size ; pos++){ 1824 hfp_parse(hfp_connection, packet[pos], 0); 1825 } 1826 hfp_generic_status_indicator_t * indicator; 1827 int value; 1828 switch(hfp_connection->command){ 1829 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1830 if (hfp_ag_response_and_hold_active){ 1831 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1832 } 1833 hfp_connection->ok_pending = 1; 1834 break; 1835 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1836 value = atoi((char *)&hfp_connection->line_buffer[0]); 1837 log_info("HF Response and Hold: %u", value); 1838 switch(value){ 1839 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1840 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1841 break; 1842 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1843 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1844 break; 1845 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1846 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1847 break; 1848 default: 1849 break; 1850 } 1851 hfp_connection->ok_pending = 1; 1852 break; 1853 case HFP_CMD_HF_INDICATOR_STATUS: 1854 hfp_connection->command = HFP_CMD_NONE; 1855 // find indicator by assigned number 1856 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1857 if (!indicator){ 1858 hfp_connection->send_error = 1; 1859 break; 1860 } 1861 value = atoi((char *)&hfp_connection->line_buffer[0]); 1862 switch (indicator->uuid){ 1863 case 1: // enhanced security 1864 if (value > 1) { 1865 hfp_connection->send_error = 1; 1866 return; 1867 } 1868 log_info("HF Indicator 'enhanced security' set to %u", value); 1869 break; 1870 case 2: // battery level 1871 if (value > 100){ 1872 hfp_connection->send_error = 1; 1873 return; 1874 } 1875 log_info("HF Indicator 'battery' set to %u", value); 1876 break; 1877 default: 1878 log_info("HF Indicator unknown set to %u", value); 1879 break; 1880 } 1881 hfp_connection->ok_pending = 1; 1882 break; 1883 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1884 // expected by SLC state machine 1885 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1886 hfp_connection->send_ag_indicators_segment = 0; 1887 hfp_connection->send_ag_status_indicators = 1; 1888 break; 1889 case HFP_CMD_LIST_CURRENT_CALLS: 1890 hfp_connection->command = HFP_CMD_NONE; 1891 hfp_connection->next_call_index = 0; 1892 hfp_connection->send_status_of_current_calls = 1; 1893 break; 1894 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1895 if (subscriber_numbers_count == 0){ 1896 hfp_ag_ok(hfp_connection->rfcomm_cid); 1897 break; 1898 } 1899 hfp_connection->next_subscriber_number_to_send = 0; 1900 hfp_connection->send_subscriber_number = 1; 1901 break; 1902 case HFP_CMD_TRANSMIT_DTMF_CODES: 1903 hfp_connection->command = HFP_CMD_NONE; 1904 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &hfp_connection->line_buffer[0]); 1905 break; 1906 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1907 hfp_connection->command = HFP_CMD_NONE; 1908 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1909 break; 1910 case HFP_CMD_TURN_OFF_EC_AND_NR: 1911 hfp_connection->command = HFP_CMD_NONE; 1912 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1913 hfp_connection->ok_pending = 1; 1914 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1915 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1916 } else { 1917 hfp_connection->send_error = 1; 1918 } 1919 break; 1920 case HFP_CMD_CALL_ANSWERED: 1921 hfp_connection->command = HFP_CMD_NONE; 1922 log_info("HFP: ATA"); 1923 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1924 break; 1925 case HFP_CMD_HANG_UP_CALL: 1926 hfp_connection->command = HFP_CMD_NONE; 1927 hfp_connection->ok_pending = 1; 1928 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1929 break; 1930 case HFP_CMD_CALL_HOLD: { 1931 // TODO: fully implement this 1932 log_error("HFP: unhandled call hold type %c", hfp_connection->line_buffer[0]); 1933 hfp_connection->command = HFP_CMD_NONE; 1934 hfp_connection->ok_pending = 1; 1935 hfp_connection->call_index = 0; 1936 1937 if (hfp_connection->line_buffer[1] != '\0'){ 1938 hfp_connection->call_index = atoi((char *)&hfp_connection->line_buffer[1]); 1939 } 1940 1941 switch (hfp_connection->line_buffer[0]){ 1942 case '0': 1943 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1944 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1945 break; 1946 case '1': 1947 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1948 // Where both a held and a waiting call exist, the above procedures shall apply to the 1949 // waiting call (i.e., not to the held call) in conflicting situation. 1950 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1951 break; 1952 case '2': 1953 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1954 // Where both a held and a waiting call exist, the above procedures shall apply to the 1955 // waiting call (i.e., not to the held call) in conflicting situation. 1956 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1957 break; 1958 case '3': 1959 // Adds a held call to the conversation. 1960 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1961 break; 1962 case '4': 1963 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1964 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1965 break; 1966 default: 1967 break; 1968 } 1969 break; 1970 } 1971 case HFP_CMD_CALL_PHONE_NUMBER: 1972 hfp_connection->command = HFP_CMD_NONE; 1973 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1974 break; 1975 case HFP_CMD_REDIAL_LAST_NUMBER: 1976 hfp_connection->command = HFP_CMD_NONE; 1977 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1978 break; 1979 case HFP_CMD_ENABLE_CLIP: 1980 hfp_connection->command = HFP_CMD_NONE; 1981 hfp_connection->clip_enabled = hfp_connection->line_buffer[8] != '0'; 1982 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1983 hfp_connection->ok_pending = 1; 1984 break; 1985 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1986 hfp_connection->command = HFP_CMD_NONE; 1987 hfp_connection->call_waiting_notification_enabled = hfp_connection->line_buffer[8] != '0'; 1988 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1989 hfp_connection->ok_pending = 1; 1990 break; 1991 case HFP_CMD_SET_SPEAKER_GAIN: 1992 hfp_connection->command = HFP_CMD_NONE; 1993 hfp_connection->ok_pending = 1; 1994 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 1995 break; 1996 case HFP_CMD_SET_MICROPHONE_GAIN: 1997 hfp_connection->command = HFP_CMD_NONE; 1998 hfp_connection->ok_pending = 1; 1999 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2000 break; 2001 default: 2002 break; 2003 } 2004 } 2005 2006 static void hfp_run(void){ 2007 btstack_linked_list_iterator_t it; 2008 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2009 while (btstack_linked_list_iterator_has_next(&it)){ 2010 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2011 hfp_run_for_context(hfp_connection); 2012 } 2013 } 2014 2015 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2016 switch (packet_type){ 2017 case RFCOMM_DATA_PACKET: 2018 hfp_handle_rfcomm_data(packet_type, channel, packet, size); 2019 break; 2020 case HCI_EVENT_PACKET: 2021 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2022 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2023 hfp_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2024 return; 2025 } 2026 hfp_handle_hci_event(packet_type, channel, packet, size); 2027 break; 2028 default: 2029 break; 2030 } 2031 2032 hfp_run(); 2033 } 2034 2035 2036 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2037 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2038 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2039 return; 2040 } 2041 int i; 2042 hfp_codecs_nr = codecs_nr; 2043 for (i=0; i < codecs_nr; i++){ 2044 hfp_codecs[i] = codecs[i]; 2045 } 2046 } 2047 2048 void hfp_ag_init_supported_features(uint32_t supported_features){ 2049 hfp_supported_features = supported_features; 2050 } 2051 2052 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2053 hfp_ag_indicators_nr = ag_indicators_nr; 2054 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2055 } 2056 2057 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2058 if (hf_indicators_nr > HFP_MAX_NUM_HF_INDICATORS) return; 2059 hfp_generic_status_indicators_nr = hf_indicators_nr; 2060 memcpy(hfp_generic_status_indicators, hf_indicators, hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2061 } 2062 2063 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2064 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2065 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2066 } 2067 2068 2069 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2070 // register for HCI events 2071 hci_event_callback_registration.callback = &packet_handler; 2072 hci_add_event_handler(&hci_event_callback_registration); 2073 2074 rfcomm_register_service(&packet_handler, rfcomm_channel_nr, 0xffff); 2075 2076 hfp_ag_response_and_hold_active = 0; 2077 subscriber_numbers = NULL; 2078 subscriber_numbers_count = 0; 2079 2080 hfp_set_packet_handler_for_rfcomm_connections(&packet_handler); 2081 2082 hfp_gsm_init(); 2083 } 2084 2085 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2086 hfp_establish_service_level_connection(bd_addr, SDP_Handsfree); 2087 } 2088 2089 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2090 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2091 if (!hfp_connection){ 2092 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2093 return; 2094 } 2095 hfp_release_service_level_connection(hfp_connection); 2096 hfp_run_for_context(hfp_connection); 2097 } 2098 2099 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2100 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2101 if (!hfp_connection){ 2102 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2103 return; 2104 } 2105 hfp_connection->extended_audio_gateway_error = 0; 2106 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2107 return; 2108 } 2109 hfp_connection->extended_audio_gateway_error = error; 2110 hfp_run_for_context(hfp_connection); 2111 } 2112 2113 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2114 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2115 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2116 2117 hfp_connection->establish_audio_connection = 1; 2118 2119 if (!has_codec_negotiation_feature(hfp_connection)){ 2120 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2121 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2122 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2123 // now, pick link settings 2124 hfp_init_link_settings(hfp_connection); 2125 } 2126 2127 switch (hfp_connection->codecs_state){ 2128 case HFP_CODECS_IDLE: 2129 case HFP_CODECS_RECEIVED_LIST: 2130 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2131 case HFP_CODECS_ERROR: 2132 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2133 break; 2134 default: 2135 break; 2136 } 2137 } 2138 2139 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2140 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2141 if (!hfp_connection){ 2142 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2143 return; 2144 } 2145 hfp_connection->establish_audio_connection = 0; 2146 hfp_ag_setup_audio_connection(hfp_connection); 2147 hfp_run_for_context(hfp_connection); 2148 } 2149 2150 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2151 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2152 if (!hfp_connection){ 2153 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2154 return; 2155 } 2156 hfp_release_audio_connection(hfp_connection); 2157 hfp_run_for_context(hfp_connection); 2158 } 2159 2160 /** 2161 * @brief Enable in-band ring tone 2162 */ 2163 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2164 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2165 return; 2166 } 2167 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2168 2169 btstack_linked_list_iterator_t it; 2170 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2171 while (btstack_linked_list_iterator_has_next(&it)){ 2172 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2173 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2174 hfp_run_for_context(hfp_connection); 2175 } 2176 } 2177 2178 /** 2179 * @brief Called from GSM 2180 */ 2181 void hfp_ag_incoming_call(void){ 2182 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2183 } 2184 2185 /** 2186 * @brief number is stored. 2187 */ 2188 void hfp_ag_set_clip(uint8_t type, const char * number){ 2189 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2190 } 2191 2192 void hfp_ag_call_dropped(void){ 2193 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2194 } 2195 2196 // call from AG UI 2197 void hfp_ag_answer_incoming_call(void){ 2198 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2199 } 2200 2201 void hfp_ag_join_held_call(void){ 2202 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2203 } 2204 2205 void hfp_ag_terminate_call(void){ 2206 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2207 } 2208 2209 void hfp_ag_outgoing_call_ringing(void){ 2210 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2211 } 2212 2213 void hfp_ag_outgoing_call_established(void){ 2214 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2215 } 2216 2217 void hfp_ag_outgoing_call_rejected(void){ 2218 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2219 } 2220 2221 void hfp_ag_outgoing_call_accepted(void){ 2222 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2223 } 2224 2225 void hfp_ag_hold_incoming_call(void){ 2226 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2227 } 2228 2229 void hfp_ag_accept_held_incoming_call(void) { 2230 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2231 } 2232 2233 void hfp_ag_reject_held_incoming_call(void){ 2234 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2235 } 2236 2237 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2238 int indicator_index = get_ag_indicator_index_for_name(name); 2239 if (indicator_index < 0) return; 2240 hfp_ag_indicators[indicator_index].status = value; 2241 2242 2243 btstack_linked_list_iterator_t it; 2244 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2245 while (btstack_linked_list_iterator_has_next(&it)){ 2246 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2247 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2248 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2249 continue; 2250 } 2251 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2252 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2253 hfp_run_for_context(hfp_connection); 2254 } 2255 } 2256 2257 void hfp_ag_set_registration_status(int status){ 2258 hfp_ag_set_ag_indicator("service", status); 2259 } 2260 2261 void hfp_ag_set_signal_strength(int strength){ 2262 hfp_ag_set_ag_indicator("signal", strength); 2263 } 2264 2265 void hfp_ag_set_roaming_status(int status){ 2266 hfp_ag_set_ag_indicator("roam", status); 2267 } 2268 2269 void hfp_ag_set_battery_level(int level){ 2270 hfp_ag_set_ag_indicator("battchg", level); 2271 } 2272 2273 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2274 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2275 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2276 if (!hfp_connection){ 2277 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2278 return; 2279 } 2280 2281 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2282 log_info("AG cannot acivate voice recognition - not supported by HF"); 2283 return; 2284 } 2285 2286 if (activate){ 2287 hfp_ag_establish_audio_connection(acl_handle); 2288 } 2289 2290 hfp_connection->ag_activate_voice_recognition = activate; 2291 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2292 hfp_run_for_context(hfp_connection); 2293 } 2294 2295 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2296 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2297 if (!hfp_connection){ 2298 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2299 return; 2300 } 2301 if (hfp_connection->microphone_gain != gain){ 2302 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2303 hfp_connection->microphone_gain = gain; 2304 hfp_connection->send_microphone_gain = 1; 2305 } 2306 hfp_run_for_context(hfp_connection); 2307 } 2308 2309 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2310 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2311 if (!hfp_connection){ 2312 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2313 return; 2314 } 2315 if (hfp_connection->speaker_gain != gain){ 2316 hfp_connection->speaker_gain = gain; 2317 hfp_connection->send_speaker_gain = 1; 2318 } 2319 hfp_run_for_context(hfp_connection); 2320 } 2321 2322 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2323 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2324 if (!hfp_connection){ 2325 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2326 return; 2327 } 2328 hfp_ag_set_clip(0, number); 2329 hfp_connection->send_phone_number_for_voice_tag = 1; 2330 } 2331 2332 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2333 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2334 if (!hfp_connection){ 2335 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2336 return; 2337 } 2338 hfp_connection->send_error = 1; 2339 } 2340 2341 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2342 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2343 if (!hfp_connection){ 2344 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2345 return; 2346 } 2347 hfp_connection->ok_pending = 1; 2348 } 2349 2350 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2351 subscriber_numbers = numbers; 2352 subscriber_numbers_count = numbers_count; 2353 } 2354 2355 void hfp_ag_clear_last_dialed_number(void){ 2356 hfp_gsm_clear_last_dialed_number(); 2357 } 2358 2359 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2360 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2361 if (!hfp_connection){ 2362 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2363 return; 2364 } 2365 if (!hfp_connection->call_waiting_notification_enabled) return; 2366 2367 hfp_connection->ag_notify_incoming_call_waiting = 1; 2368 hfp_run_for_context(hfp_connection); 2369 } 2370 2371