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 UNUSED(activate); 440 441 // AT\r\n%s:3,0,0,%d\r\n 442 return hfp_ag_ok(cid); 443 } 444 445 446 static int hfp_ag_retrieve_can_hold_call_cmd(uint16_t cid){ 447 char buffer[40]; 448 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 449 offset += hfp_ag_call_services_join(buffer+offset, sizeof(buffer)-offset); 450 451 buffer[offset] = 0; 452 453 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 454 buffer[offset] = 0; 455 return send_str_over_rfcomm(cid, buffer); 456 } 457 458 459 static int hfp_ag_list_supported_generic_status_indicators_cmd(uint16_t cid){ 460 return hfp_ag_ok(cid); 461 } 462 463 static int hfp_ag_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 464 char buffer[40]; 465 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 466 offset += hfp_hf_indicators_join(buffer+offset, sizeof(buffer)-offset); 467 468 buffer[offset] = 0; 469 470 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ")\r\n\r\nOK\r\n"); 471 buffer[offset] = 0; 472 return send_str_over_rfcomm(cid, buffer); 473 } 474 475 static int hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 476 char buffer[40]; 477 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer)); 478 479 buffer[offset] = 0; 480 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 481 buffer[offset] = 0; 482 return send_str_over_rfcomm(cid, buffer); 483 } 484 485 static int hfp_ag_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 486 char buffer[20]; 487 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 488 return send_str_over_rfcomm(cid, buffer); 489 } 490 491 static int hfp_ag_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 492 char buffer[40]; 493 if (strlen(op.name) == 0){ 494 sprintf(buffer, "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 495 } else { 496 sprintf(buffer, "\r\n%s:%d,%d,%s\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format, op.name); 497 } 498 return send_str_over_rfcomm(cid, buffer); 499 } 500 501 502 static int hfp_ag_cmd_suggest_codec(uint16_t cid, uint8_t codec){ 503 char buffer[30]; 504 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CONFIRM_COMMON_CODEC, codec); 505 return send_str_over_rfcomm(cid, buffer); 506 } 507 508 static int hfp_ag_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 509 char buffer[30]; 510 sprintf(buffer, "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 511 return send_str_over_rfcomm(cid, buffer); 512 } 513 514 static int hfp_ag_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 515 char buffer[30]; 516 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_SPEAKER_GAIN, gain); 517 return send_str_over_rfcomm(cid, buffer); 518 } 519 520 static int hfp_ag_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 521 char buffer[30]; 522 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_MICROPHONE_GAIN, gain); 523 return send_str_over_rfcomm(cid, buffer); 524 } 525 526 static int hfp_ag_set_response_and_hold(uint16_t cid, int state){ 527 char buffer[30]; 528 sprintf(buffer, "\r\n%s: %d\r\n", HFP_RESPONSE_AND_HOLD, state); 529 return send_str_over_rfcomm(cid, buffer); 530 } 531 532 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 533 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 534 535 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 536 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 537 return HFP_CODEC_MSBC; 538 } 539 } 540 return HFP_CODEC_CVSD; 541 } 542 543 static void hfp_init_link_settings(hfp_connection_t * hfp_connection){ 544 // determine highest possible link setting 545 hfp_connection->link_setting = HFP_LINK_SETTINGS_D1; 546 // anything else requires eSCO support on both sides 547 if (hci_extended_sco_link_supported() && hci_remote_esco_supported(hfp_connection->acl_handle)){ 548 switch (hfp_connection->negotiated_codec){ 549 case HFP_CODEC_CVSD: 550 hfp_connection->link_setting = HFP_LINK_SETTINGS_S3; 551 if ((hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) 552 && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4))){ 553 hfp_connection->link_setting = HFP_LINK_SETTINGS_S4; 554 } 555 break; 556 case HFP_CODEC_MSBC: 557 hfp_connection->link_setting = HFP_LINK_SETTINGS_T2; 558 break; 559 default: 560 break; 561 } 562 } 563 log_info("hfp_init_link_settings: %u", hfp_connection->link_setting); 564 } 565 566 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 567 /* events ( == commands): 568 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 569 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 570 hf_trigger_codec_connection_setup == received BCC 571 ag_trigger_codec_connection_setup == received from AG to send BCS 572 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 573 */ 574 575 switch (hfp_connection->codecs_state){ 576 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 577 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 578 break; 579 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 580 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 581 break; 582 default: 583 break; 584 } 585 586 // printf(" -> State machine: CC\n"); 587 588 switch (hfp_connection->command){ 589 case HFP_CMD_AVAILABLE_CODECS: 590 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 591 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 592 hfp_ag_ok(hfp_connection->rfcomm_cid); 593 return 1; 594 } 595 596 switch (hfp_connection->codecs_state){ 597 case HFP_CODECS_AG_SENT_COMMON_CODEC: 598 case HFP_CODECS_EXCHANGED: 599 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 600 break; 601 default: 602 break; 603 } 604 hfp_ag_ok(hfp_connection->rfcomm_cid); 605 return 1; 606 607 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 608 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 609 hfp_ag_ok(hfp_connection->rfcomm_cid); 610 return 1; 611 612 case HFP_CMD_AG_SEND_COMMON_CODEC: 613 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 614 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 615 hfp_ag_cmd_suggest_codec(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 616 return 1; 617 618 case HFP_CMD_HF_CONFIRMED_CODEC: 619 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 620 hfp_connection->codecs_state = HFP_CODECS_ERROR; 621 hfp_ag_error(hfp_connection->rfcomm_cid); 622 return 1; 623 } 624 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 625 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 626 log_info("hfp: codec confirmed: %s", hfp_connection->negotiated_codec == HFP_CODEC_MSBC ? "mSBC" : "CVSD"); 627 hfp_ag_ok(hfp_connection->rfcomm_cid); 628 // now, pick link settings 629 hfp_init_link_settings(hfp_connection); 630 return 1; 631 default: 632 break; 633 } 634 return 0; 635 } 636 637 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 638 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 639 hfp_emit_slc_connection_event(hfp_callback, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 640 641 // if active call exist, set per-hfp_connection state active, too (when audio is on) 642 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 643 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 644 } 645 // if AG is ringing, also start ringing on the HF 646 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS && 647 hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 648 hfp_ag_hf_start_ringing(hfp_connection); 649 } 650 } 651 652 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 653 log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 654 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 655 int done = 0; 656 switch(hfp_connection->command){ 657 case HFP_CMD_SUPPORTED_FEATURES: 658 switch(hfp_connection->state){ 659 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 660 case HFP_EXCHANGE_SUPPORTED_FEATURES: 661 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 662 if (has_codec_negotiation_feature(hfp_connection)){ 663 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 664 } else { 665 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 666 } 667 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 668 return 1; 669 default: 670 break; 671 } 672 break; 673 case HFP_CMD_AVAILABLE_CODECS: 674 done = codecs_exchange_state_machine(hfp_connection); 675 676 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 677 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 678 } 679 return done; 680 681 case HFP_CMD_RETRIEVE_AG_INDICATORS: 682 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 683 // HF requested AG Indicators and we did expect it 684 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 685 // continue below in state switch 686 } 687 break; 688 689 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 690 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 691 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 692 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 693 return 1; 694 695 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 696 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 697 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 698 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 699 } else if (has_hf_indicators_feature(hfp_connection)){ 700 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 701 } else { 702 hfp_ag_slc_established(hfp_connection); 703 } 704 hfp_ag_set_indicator_status_update_cmd(hfp_connection->rfcomm_cid, 1); 705 return 1; 706 707 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 708 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 709 if (has_hf_indicators_feature(hfp_connection)){ 710 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 711 } 712 hfp_ag_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 713 if (!has_hf_indicators_feature(hfp_connection)){ 714 hfp_ag_slc_established(hfp_connection); 715 } 716 return 1; 717 718 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 719 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 720 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 721 hfp_ag_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 722 return 1; 723 724 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 725 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 726 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 727 hfp_ag_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 728 return 1; 729 730 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 731 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 732 hfp_ag_slc_established(hfp_connection); 733 hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 734 return 1; 735 default: 736 break; 737 } 738 739 switch (hfp_connection->state){ 740 case HFP_RETRIEVE_INDICATORS: { 741 int next_segment = hfp_ag_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 742 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 743 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 744 if (next_segment < num_segments){ 745 // prepare sending of next segment 746 hfp_connection->send_ag_indicators_segment = next_segment; 747 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 748 } else { 749 // done, go to next state 750 hfp_connection->send_ag_indicators_segment = 0; 751 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 752 } 753 return 1; 754 } 755 default: 756 break; 757 } 758 759 return done; 760 } 761 762 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 763 764 int done = codecs_exchange_state_machine(hfp_connection); 765 if (done) return done; 766 767 switch(hfp_connection->command){ 768 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 769 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 770 hfp_ag_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 771 return 1; 772 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 773 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 774 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 775 hfp_ag_ok(hfp_connection->rfcomm_cid); 776 hfp_ag_setup_audio_connection(hfp_connection); 777 } else { 778 hfp_ag_error(hfp_connection->rfcomm_cid); 779 } 780 return 1; 781 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 782 hfp_ag_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 783 return 1; 784 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 785 hfp_ag_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 786 return 1; 787 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 788 if (hfp_connection->network_operator.format != 0){ 789 hfp_ag_error(hfp_connection->rfcomm_cid); 790 } else { 791 hfp_ag_ok(hfp_connection->rfcomm_cid); 792 } 793 return 1; 794 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 795 hfp_ag_ok(hfp_connection->rfcomm_cid); 796 return 1; 797 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 798 if (hfp_connection->extended_audio_gateway_error){ 799 hfp_connection->extended_audio_gateway_error = 0; 800 hfp_ag_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 801 return 1; 802 } 803 break; 804 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 805 hfp_ag_ok(hfp_connection->rfcomm_cid); 806 return 1; 807 default: 808 break; 809 } 810 return 0; 811 } 812 813 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 814 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 815 hfp_connection->state > HFP_W2_DISCONNECT_SCO) return 0; 816 817 818 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->release_audio_connection){ 819 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 820 hfp_connection->release_audio_connection = 0; 821 gap_disconnect(hfp_connection->sco_handle); 822 return 1; 823 } 824 825 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 826 827 // run codecs exchange 828 int done = codecs_exchange_state_machine(hfp_connection); 829 if (done) return done; 830 831 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return done; 832 if (hfp_connection->establish_audio_connection){ 833 hfp_connection->state = HFP_W4_SCO_CONNECTED; 834 hfp_connection->establish_audio_connection = 0; 835 hfp_setup_synchronous_connection(hfp_connection); 836 return 1; 837 } 838 return 0; 839 } 840 841 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 842 btstack_linked_list_iterator_t it; 843 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 844 845 while (btstack_linked_list_iterator_has_next(&it)){ 846 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 847 if ( & hfp_connection->hfp_timeout == ts) { 848 return hfp_connection; 849 } 850 } 851 return NULL; 852 } 853 854 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 855 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 856 if (!hfp_connection) return; 857 858 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 859 hfp_connection->ag_ring = 1; 860 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 861 862 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 863 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 864 865 hfp_run_for_context(hfp_connection); 866 } 867 868 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 869 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 870 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 871 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 872 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 873 } 874 875 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 876 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 877 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 878 } 879 880 // 881 // transitition implementations for hfp_ag_call_state_machine 882 // 883 884 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 885 if (use_in_band_tone()){ 886 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 887 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 888 } else { 889 hfp_timeout_start(hfp_connection); 890 hfp_connection->ag_ring = 1; 891 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 892 hfp_connection->call_state = HFP_CALL_RINGING; 893 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 894 } 895 } 896 897 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 898 hfp_connection->ag_ring = 0; 899 hfp_connection->ag_send_clip = 0; 900 hfp_timeout_stop(hfp_connection); 901 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_STOP_RINGINIG); 902 } 903 904 static void hfp_ag_trigger_incoming_call(void){ 905 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 906 if (indicator_index < 0) return; 907 908 btstack_linked_list_iterator_t it; 909 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 910 while (btstack_linked_list_iterator_has_next(&it)){ 911 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 912 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 913 if (hfp_connection->call_state == HFP_CALL_IDLE){ 914 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 915 hfp_ag_hf_start_ringing(hfp_connection); 916 } 917 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 918 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 919 } 920 hfp_run_for_context(hfp_connection); 921 } 922 } 923 924 static void hfp_ag_transfer_callsetup_state(void){ 925 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 926 if (indicator_index < 0) return; 927 928 btstack_linked_list_iterator_t it; 929 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 930 while (btstack_linked_list_iterator_has_next(&it)){ 931 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 932 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 933 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 934 hfp_run_for_context(hfp_connection); 935 } 936 } 937 938 static void hfp_ag_transfer_call_state(void){ 939 int indicator_index = get_ag_indicator_index_for_name("call"); 940 if (indicator_index < 0) return; 941 942 btstack_linked_list_iterator_t it; 943 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 944 while (btstack_linked_list_iterator_has_next(&it)){ 945 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 946 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 947 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 948 hfp_run_for_context(hfp_connection); 949 } 950 } 951 952 static void hfp_ag_transfer_callheld_state(void){ 953 int indicator_index = get_ag_indicator_index_for_name("callheld"); 954 if (indicator_index < 0) return; 955 956 btstack_linked_list_iterator_t it; 957 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 958 while (btstack_linked_list_iterator_has_next(&it)){ 959 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 960 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 961 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 962 hfp_run_for_context(hfp_connection); 963 } 964 } 965 966 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 967 968 int call_indicator_index = get_ag_indicator_index_for_name("call"); 969 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 970 971 btstack_linked_list_iterator_t it; 972 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 973 while (btstack_linked_list_iterator_has_next(&it)){ 974 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 975 if (hfp_connection->call_state != HFP_CALL_RINGING && 976 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 977 978 hfp_ag_hf_stop_ringing(hfp_connection); 979 if (hfp_connection == source){ 980 hfp_connection->ok_pending = 1; 981 982 if (use_in_band_tone()){ 983 hfp_connection->call_state = HFP_CALL_ACTIVE; 984 } else { 985 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 986 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 987 } 988 989 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 990 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 991 992 } else { 993 hfp_connection->call_state = HFP_CALL_IDLE; 994 } 995 hfp_run_for_context(hfp_connection); 996 } 997 } 998 999 static void hfp_ag_ag_accept_call(void){ 1000 1001 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1002 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1003 1004 btstack_linked_list_iterator_t it; 1005 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1006 while (btstack_linked_list_iterator_has_next(&it)){ 1007 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1008 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 1009 1010 hfp_ag_hf_stop_ringing(hfp_connection); 1011 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1012 1013 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1014 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1015 1016 hfp_run_for_context(hfp_connection); 1017 break; // only single 1018 } 1019 } 1020 1021 static void hfp_ag_trigger_reject_call(void){ 1022 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1023 btstack_linked_list_iterator_t it; 1024 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1025 while (btstack_linked_list_iterator_has_next(&it)){ 1026 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1027 if (connection->call_state != HFP_CALL_RINGING && 1028 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1029 hfp_ag_hf_stop_ringing(connection); 1030 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1031 connection->call_state = HFP_CALL_IDLE; 1032 hfp_run_for_context(connection); 1033 } 1034 } 1035 1036 static void hfp_ag_trigger_terminate_call(void){ 1037 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1038 1039 btstack_linked_list_iterator_t it; 1040 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1041 while (btstack_linked_list_iterator_has_next(&it)){ 1042 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1043 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1044 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1045 hfp_connection->call_state = HFP_CALL_IDLE; 1046 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1047 hfp_connection->release_audio_connection = 1; 1048 hfp_run_for_context(hfp_connection); 1049 } 1050 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_TERMINATED); 1051 } 1052 1053 static void hfp_ag_set_callsetup_indicator(void){ 1054 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1055 if (!indicator){ 1056 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1057 return; 1058 }; 1059 indicator->status = hfp_gsm_callsetup_status(); 1060 } 1061 1062 static void hfp_ag_set_callheld_indicator(void){ 1063 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1064 if (!indicator){ 1065 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1066 return; 1067 }; 1068 indicator->status = hfp_gsm_callheld_status(); 1069 } 1070 1071 static void hfp_ag_set_call_indicator(void){ 1072 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1073 if (!indicator){ 1074 log_error("hfp_ag_set_call_state: call indicator is missing"); 1075 return; 1076 }; 1077 indicator->status = hfp_gsm_call_status(); 1078 } 1079 1080 static void hfp_ag_stop_ringing(void){ 1081 btstack_linked_list_iterator_t it; 1082 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1083 while (btstack_linked_list_iterator_has_next(&it)){ 1084 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1085 if (hfp_connection->call_state != HFP_CALL_RINGING && 1086 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1087 hfp_ag_hf_stop_ringing(hfp_connection); 1088 } 1089 } 1090 1091 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1092 btstack_linked_list_iterator_t it; 1093 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1094 while (btstack_linked_list_iterator_has_next(&it)){ 1095 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1096 if (hfp_connection->call_state == call_state) return hfp_connection; 1097 } 1098 return NULL; 1099 } 1100 1101 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1102 btstack_linked_list_iterator_t it; 1103 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1104 while (btstack_linked_list_iterator_has_next(&it)){ 1105 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1106 hfp_connection->send_response_and_hold_status = state + 1; 1107 } 1108 } 1109 1110 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1111 int indicator_index; 1112 switch (hfp_connection->call_state){ 1113 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1114 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1115 // we got event: audio hfp_connection established 1116 hfp_timeout_start(hfp_connection); 1117 hfp_connection->ag_ring = 1; 1118 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1119 hfp_connection->call_state = HFP_CALL_RINGING; 1120 hfp_connection->call_state = HFP_CALL_RINGING; 1121 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 1122 break; 1123 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1124 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1125 // we got event: audio hfp_connection established 1126 hfp_connection->call_state = HFP_CALL_ACTIVE; 1127 break; 1128 case HFP_CALL_W2_SEND_CALL_WAITING: 1129 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1130 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1131 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1132 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1133 break; 1134 default: 1135 break; 1136 } 1137 return 0; 1138 } 1139 // hfp_connection is used to identify originating HF 1140 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1141 int indicator_index; 1142 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1143 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1144 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1145 1146 //printf("hfp_ag_call_sm event %d \n", event); 1147 switch (event){ 1148 case HFP_AG_INCOMING_CALL: 1149 switch (hfp_gsm_call_status()){ 1150 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1151 switch (hfp_gsm_callsetup_status()){ 1152 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1153 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1154 hfp_ag_set_callsetup_indicator(); 1155 hfp_ag_trigger_incoming_call(); 1156 log_info("AG rings"); 1157 break; 1158 default: 1159 break; 1160 } 1161 break; 1162 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1163 switch (hfp_gsm_callsetup_status()){ 1164 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1165 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1166 hfp_ag_set_callsetup_indicator(); 1167 hfp_ag_trigger_incoming_call(); 1168 log_info("AG call waiting"); 1169 break; 1170 default: 1171 break; 1172 } 1173 break; 1174 } 1175 break; 1176 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1177 switch (hfp_gsm_call_status()){ 1178 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1179 switch (hfp_gsm_callsetup_status()){ 1180 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1181 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1182 hfp_ag_set_call_indicator(); 1183 hfp_ag_set_callsetup_indicator(); 1184 hfp_ag_ag_accept_call(); 1185 log_info("AG answers call, accept call by GSM"); 1186 break; 1187 default: 1188 break; 1189 } 1190 break; 1191 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1192 switch (hfp_gsm_callsetup_status()){ 1193 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1194 log_info("AG: current call is placed on hold, incoming call gets active"); 1195 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1196 hfp_ag_set_callsetup_indicator(); 1197 hfp_ag_set_callheld_indicator(); 1198 hfp_ag_transfer_callsetup_state(); 1199 hfp_ag_transfer_callheld_state(); 1200 break; 1201 default: 1202 break; 1203 } 1204 break; 1205 } 1206 break; 1207 1208 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1209 switch (hfp_gsm_call_status()){ 1210 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1211 switch (hfp_gsm_callheld_status()){ 1212 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1213 log_info("AG: joining held call with active call"); 1214 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1215 hfp_ag_set_callheld_indicator(); 1216 hfp_ag_transfer_callheld_state(); 1217 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1218 break; 1219 default: 1220 break; 1221 } 1222 break; 1223 default: 1224 break; 1225 } 1226 break; 1227 1228 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1229 switch (hfp_gsm_call_status()){ 1230 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1231 switch (hfp_gsm_callsetup_status()){ 1232 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1233 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1234 hfp_ag_set_callsetup_indicator(); 1235 hfp_ag_set_call_indicator(); 1236 hfp_ag_hf_accept_call(hfp_connection); 1237 log_info("HF answers call, accept call by GSM"); 1238 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_ANSWERED); 1239 break; 1240 default: 1241 break; 1242 } 1243 break; 1244 default: 1245 break; 1246 } 1247 break; 1248 1249 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1250 switch (hfp_gsm_call_status()){ 1251 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1252 switch (hfp_gsm_callsetup_status()){ 1253 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1254 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1255 hfp_ag_response_and_hold_active = 1; 1256 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1257 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1258 // as with regualr call 1259 hfp_ag_set_call_indicator(); 1260 hfp_ag_set_callsetup_indicator(); 1261 hfp_ag_ag_accept_call(); 1262 log_info("AG response and hold - hold by AG"); 1263 break; 1264 default: 1265 break; 1266 } 1267 break; 1268 default: 1269 break; 1270 } 1271 break; 1272 1273 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1274 switch (hfp_gsm_call_status()){ 1275 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1276 switch (hfp_gsm_callsetup_status()){ 1277 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1278 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1279 hfp_ag_response_and_hold_active = 1; 1280 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1281 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1282 // as with regualr call 1283 hfp_ag_set_call_indicator(); 1284 hfp_ag_set_callsetup_indicator(); 1285 hfp_ag_hf_accept_call(hfp_connection); 1286 log_info("AG response and hold - hold by HF"); 1287 break; 1288 default: 1289 break; 1290 } 1291 break; 1292 default: 1293 break; 1294 } 1295 break; 1296 1297 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1298 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1299 if (!hfp_ag_response_and_hold_active) break; 1300 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1301 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1302 hfp_ag_response_and_hold_active = 0; 1303 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1304 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1305 log_info("Held Call accepted and active"); 1306 break; 1307 1308 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1309 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1310 if (!hfp_ag_response_and_hold_active) break; 1311 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1312 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1313 hfp_ag_response_and_hold_active = 0; 1314 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1315 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1316 // from terminate by ag 1317 hfp_ag_set_call_indicator(); 1318 hfp_ag_trigger_terminate_call(); 1319 break; 1320 1321 case HFP_AG_TERMINATE_CALL_BY_HF: 1322 switch (hfp_gsm_call_status()){ 1323 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1324 switch (hfp_gsm_callsetup_status()){ 1325 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1326 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1327 hfp_ag_set_callsetup_indicator(); 1328 hfp_ag_transfer_callsetup_state(); 1329 hfp_ag_trigger_reject_call(); 1330 log_info("HF Rejected Incoming call, AG terminate call"); 1331 break; 1332 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1333 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1334 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1335 hfp_ag_set_callsetup_indicator(); 1336 hfp_ag_transfer_callsetup_state(); 1337 log_info("AG terminate outgoing call process"); 1338 break; 1339 default: 1340 break; 1341 } 1342 break; 1343 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1344 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1345 hfp_ag_set_call_indicator(); 1346 hfp_ag_transfer_call_state(); 1347 hfp_connection->call_state = HFP_CALL_IDLE; 1348 log_info("AG terminate call"); 1349 break; 1350 } 1351 break; 1352 1353 case HFP_AG_TERMINATE_CALL_BY_AG: 1354 switch (hfp_gsm_call_status()){ 1355 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1356 switch (hfp_gsm_callsetup_status()){ 1357 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1358 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1359 hfp_ag_set_callsetup_indicator(); 1360 hfp_ag_trigger_reject_call(); 1361 log_info("AG Rejected Incoming call, AG terminate call"); 1362 break; 1363 default: 1364 break; 1365 } 1366 break; 1367 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1368 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1369 hfp_ag_set_callsetup_indicator(); 1370 hfp_ag_set_call_indicator(); 1371 hfp_ag_trigger_terminate_call(); 1372 log_info("AG terminate call"); 1373 break; 1374 default: 1375 break; 1376 } 1377 break; 1378 case HFP_AG_CALL_DROPPED: 1379 switch (hfp_gsm_call_status()){ 1380 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1381 switch (hfp_gsm_callsetup_status()){ 1382 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1383 hfp_ag_stop_ringing(); 1384 log_info("Incoming call interrupted"); 1385 break; 1386 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1387 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1388 log_info("Outgoing call interrupted\n"); 1389 log_info("AG notify call dropped\n"); 1390 break; 1391 default: 1392 break; 1393 } 1394 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1395 hfp_ag_set_callsetup_indicator(); 1396 hfp_ag_transfer_callsetup_state(); 1397 break; 1398 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1399 if (hfp_ag_response_and_hold_active) { 1400 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1401 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1402 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1403 } 1404 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1405 hfp_ag_set_callsetup_indicator(); 1406 hfp_ag_set_call_indicator(); 1407 hfp_ag_trigger_terminate_call(); 1408 log_info("AG notify call dropped"); 1409 break; 1410 default: 1411 break; 1412 } 1413 break; 1414 1415 case HFP_AG_OUTGOING_CALL_INITIATED: 1416 // directly reject call if number of free slots is exceeded 1417 if (!hfp_gsm_call_possible()){ 1418 hfp_connection->send_error = 1; 1419 hfp_run_for_context(hfp_connection); 1420 break; 1421 } 1422 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1423 1424 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1425 1426 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1427 break; 1428 1429 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1430 // directly reject call if number of free slots is exceeded 1431 if (!hfp_gsm_call_possible()){ 1432 hfp_connection->send_error = 1; 1433 hfp_run_for_context(hfp_connection); 1434 break; 1435 } 1436 1437 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1438 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1439 1440 log_info("Redial last number"); 1441 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1442 1443 if (strlen(last_dialed_number) > 0){ 1444 log_info("Last number exists: accept call"); 1445 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1446 } else { 1447 log_info("log_infoLast number missing: reject call"); 1448 hfp_ag_outgoing_call_rejected(); 1449 } 1450 break; 1451 } 1452 case HFP_AG_OUTGOING_CALL_REJECTED: 1453 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1454 if (!hfp_connection){ 1455 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1456 break; 1457 } 1458 1459 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1460 hfp_connection->call_state = HFP_CALL_IDLE; 1461 hfp_connection->send_error = 1; 1462 hfp_run_for_context(hfp_connection); 1463 break; 1464 1465 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1466 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1467 if (!hfp_connection){ 1468 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1469 break; 1470 } 1471 1472 hfp_connection->ok_pending = 1; 1473 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1474 1475 // trigger callsetup to be 1476 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1477 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1478 1479 hfp_ag_set_callsetup_indicator(); 1480 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1481 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1482 1483 // put current call on hold if active 1484 if (put_call_on_hold){ 1485 log_info("AG putting current call on hold for new outgoing calllog_info"); 1486 hfp_ag_set_callheld_indicator(); 1487 indicator_index = get_ag_indicator_index_for_name("callheld"); 1488 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1489 } 1490 1491 // start audio if needed 1492 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1493 break; 1494 } 1495 case HFP_AG_OUTGOING_CALL_RINGING: 1496 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1497 if (!hfp_connection){ 1498 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1499 break; 1500 } 1501 1502 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1503 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1504 hfp_ag_set_callsetup_indicator(); 1505 hfp_ag_transfer_callsetup_state(); 1506 break; 1507 1508 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1509 // get outgoing call 1510 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1511 if (!hfp_connection){ 1512 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1513 } 1514 if (!hfp_connection){ 1515 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1516 break; 1517 } 1518 1519 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1520 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1521 hfp_connection->call_state = HFP_CALL_ACTIVE; 1522 hfp_ag_set_callsetup_indicator(); 1523 hfp_ag_set_call_indicator(); 1524 hfp_ag_transfer_call_state(); 1525 hfp_ag_transfer_callsetup_state(); 1526 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1527 hfp_ag_set_callheld_indicator(); 1528 hfp_ag_transfer_callheld_state(); 1529 } 1530 break; 1531 } 1532 1533 case HFP_AG_CALL_HOLD_USER_BUSY: 1534 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1535 hfp_ag_set_callsetup_indicator(); 1536 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1537 hfp_connection->call_state = HFP_CALL_ACTIVE; 1538 log_info("AG: Call Waiting, User Busy"); 1539 break; 1540 1541 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1542 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1543 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1544 1545 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1546 if (call_held || call_setup_in_progress){ 1547 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1548 1549 } 1550 1551 if (call_setup_in_progress){ 1552 log_info("AG: Call Dropped, Accept new call"); 1553 hfp_ag_set_callsetup_indicator(); 1554 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1555 } else { 1556 log_info("AG: Call Dropped, Resume held call"); 1557 } 1558 if (call_held){ 1559 hfp_ag_set_callheld_indicator(); 1560 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1561 } 1562 1563 hfp_connection->call_state = HFP_CALL_ACTIVE; 1564 break; 1565 } 1566 1567 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1568 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1569 // only update if callsetup changed 1570 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1571 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1572 1573 if (call_setup_in_progress){ 1574 log_info("AG: Call on Hold, Accept new call"); 1575 hfp_ag_set_callsetup_indicator(); 1576 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1577 } else { 1578 log_info("AG: Swap calls"); 1579 } 1580 1581 hfp_ag_set_callheld_indicator(); 1582 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1583 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1584 hfp_connection->call_state = HFP_CALL_ACTIVE; 1585 break; 1586 } 1587 1588 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1589 // Adds a held call to the conversation. 1590 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1591 log_info("AG: Join 3-way-call"); 1592 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1593 hfp_ag_set_callheld_indicator(); 1594 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1595 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1596 } 1597 hfp_connection->call_state = HFP_CALL_ACTIVE; 1598 break; 1599 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1600 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1601 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1602 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1603 hfp_ag_set_call_indicator(); 1604 hfp_ag_set_callheld_indicator(); 1605 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1606 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1607 hfp_connection->call_state = HFP_CALL_IDLE; 1608 break; 1609 1610 default: 1611 break; 1612 } 1613 1614 1615 } 1616 1617 1618 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1619 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1620 if (!active_call) return; 1621 1622 int idx = active_call->index; 1623 hfp_enhanced_call_dir_t dir = active_call->direction; 1624 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1625 hfp_enhanced_call_mode_t mode = active_call->mode; 1626 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1627 uint8_t type = active_call->clip_type; 1628 char * number = active_call->clip_number; 1629 1630 char buffer[100]; 1631 // TODO: check length of a buffer, to fit the MTU 1632 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1633 if (number){ 1634 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ", \"%s\",%u", number, type); 1635 } 1636 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1637 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, 1638 mode, mpty, type, number); 1639 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1640 } 1641 1642 static void hfp_run_for_context(hfp_connection_t *hfp_connection){ 1643 1644 log_info("hfp_run_for_context %p", hfp_connection); 1645 1646 if (!hfp_connection) return; 1647 1648 if (!hfp_connection->rfcomm_cid) return; 1649 1650 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1651 log_info("hfp_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1652 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1653 return; 1654 } 1655 1656 if (hfp_connection->send_status_of_current_calls){ 1657 hfp_connection->ok_pending = 0; 1658 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1659 hfp_connection->next_call_index++; 1660 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1661 } else { 1662 hfp_connection->next_call_index = 0; 1663 hfp_connection->ok_pending = 1; 1664 hfp_connection->send_status_of_current_calls = 0; 1665 } 1666 return; 1667 } 1668 1669 if (hfp_connection->ag_notify_incoming_call_waiting){ 1670 hfp_connection->ag_notify_incoming_call_waiting = 0; 1671 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1672 return; 1673 } 1674 1675 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1676 hfp_connection->ok_pending = 0; 1677 hfp_connection->send_error = 0; 1678 hfp_connection->command = HFP_CMD_NONE; 1679 hfp_ag_error(hfp_connection->rfcomm_cid); 1680 return; 1681 } 1682 1683 if (hfp_connection->send_error){ 1684 hfp_connection->send_error = 0; 1685 hfp_connection->command = HFP_CMD_NONE; 1686 hfp_ag_error(hfp_connection->rfcomm_cid); 1687 return; 1688 } 1689 1690 // note: before update AG indicators and ok_pending 1691 if (hfp_connection->send_response_and_hold_status){ 1692 int status = hfp_connection->send_response_and_hold_status - 1; 1693 hfp_connection->send_response_and_hold_status = 0; 1694 hfp_ag_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1695 return; 1696 } 1697 1698 if (hfp_connection->ok_pending){ 1699 hfp_connection->ok_pending = 0; 1700 hfp_connection->command = HFP_CMD_NONE; 1701 hfp_ag_ok(hfp_connection->rfcomm_cid); 1702 return; 1703 } 1704 1705 // update AG indicators 1706 if (hfp_connection->ag_indicators_status_update_bitmap){ 1707 int i; 1708 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1709 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1710 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1711 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1712 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1713 break; 1714 } 1715 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1716 return; 1717 } 1718 } 1719 } 1720 1721 if (hfp_connection->ag_ring){ 1722 hfp_connection->ag_ring = 0; 1723 hfp_connection->command = HFP_CMD_NONE; 1724 hfp_ag_ring(hfp_connection->rfcomm_cid); 1725 return; 1726 } 1727 1728 if (hfp_connection->ag_send_clip){ 1729 hfp_connection->ag_send_clip = 0; 1730 hfp_connection->command = HFP_CMD_NONE; 1731 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1732 return; 1733 } 1734 1735 if (hfp_connection->send_phone_number_for_voice_tag){ 1736 hfp_connection->send_phone_number_for_voice_tag = 0; 1737 hfp_connection->command = HFP_CMD_NONE; 1738 hfp_connection->ok_pending = 1; 1739 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1740 return; 1741 } 1742 1743 if (hfp_connection->send_subscriber_number){ 1744 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1745 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1746 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1747 } else { 1748 hfp_connection->send_subscriber_number = 0; 1749 hfp_connection->next_subscriber_number_to_send = 0; 1750 hfp_ag_ok(hfp_connection->rfcomm_cid); 1751 } 1752 hfp_connection->command = HFP_CMD_NONE; 1753 } 1754 1755 if (hfp_connection->send_microphone_gain){ 1756 hfp_connection->send_microphone_gain = 0; 1757 hfp_connection->command = HFP_CMD_NONE; 1758 hfp_ag_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1759 return; 1760 } 1761 1762 if (hfp_connection->send_speaker_gain){ 1763 hfp_connection->send_speaker_gain = 0; 1764 hfp_connection->command = HFP_CMD_NONE; 1765 hfp_ag_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1766 return; 1767 } 1768 1769 if (hfp_connection->send_ag_status_indicators){ 1770 hfp_connection->send_ag_status_indicators = 0; 1771 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1772 return; 1773 } 1774 1775 int done = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1776 if (!done){ 1777 done = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1778 } 1779 1780 if (!done){ 1781 done = call_setup_state_machine(hfp_connection); 1782 } 1783 1784 if (!done){ 1785 done = hfp_ag_run_for_audio_connection(hfp_connection); 1786 } 1787 1788 if (hfp_connection->command == HFP_CMD_NONE && !done){ 1789 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1790 switch(hfp_connection->state){ 1791 case HFP_W2_DISCONNECT_RFCOMM: 1792 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1793 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1794 break; 1795 default: 1796 break; 1797 } 1798 } 1799 if (done){ 1800 hfp_connection->command = HFP_CMD_NONE; 1801 } 1802 // 1803 if (done) { 1804 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1805 } 1806 } 1807 1808 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1809 int i; 1810 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1811 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1812 if (indicator->uuid == number){ 1813 return indicator; 1814 } 1815 } 1816 return NULL; 1817 } 1818 1819 static void hfp_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1820 UNUSED(packet_type); 1821 1822 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1823 if (!hfp_connection) return; 1824 1825 char last_char = packet[size-1]; 1826 packet[size-1] = 0; 1827 log_info("HFP_RX %s", packet); 1828 packet[size-1] = last_char; 1829 1830 int pos; 1831 for (pos = 0; pos < size ; pos++){ 1832 hfp_parse(hfp_connection, packet[pos], 0); 1833 } 1834 hfp_generic_status_indicator_t * indicator; 1835 int value; 1836 switch(hfp_connection->command){ 1837 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1838 if (hfp_ag_response_and_hold_active){ 1839 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1840 } 1841 hfp_connection->ok_pending = 1; 1842 break; 1843 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1844 value = btstack_atoi((char *)&hfp_connection->line_buffer[0]); 1845 log_info("HF Response and Hold: %u", value); 1846 switch(value){ 1847 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1848 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1849 break; 1850 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1851 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1852 break; 1853 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1854 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1855 break; 1856 default: 1857 break; 1858 } 1859 hfp_connection->ok_pending = 1; 1860 break; 1861 case HFP_CMD_HF_INDICATOR_STATUS: 1862 hfp_connection->command = HFP_CMD_NONE; 1863 // find indicator by assigned number 1864 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1865 if (!indicator){ 1866 hfp_connection->send_error = 1; 1867 break; 1868 } 1869 value = btstack_atoi((char *)&hfp_connection->line_buffer[0]); 1870 switch (indicator->uuid){ 1871 case 1: // enhanced security 1872 if (value > 1) { 1873 hfp_connection->send_error = 1; 1874 return; 1875 } 1876 log_info("HF Indicator 'enhanced security' set to %u", value); 1877 break; 1878 case 2: // battery level 1879 if (value > 100){ 1880 hfp_connection->send_error = 1; 1881 return; 1882 } 1883 log_info("HF Indicator 'battery' set to %u", value); 1884 break; 1885 default: 1886 log_info("HF Indicator unknown set to %u", value); 1887 break; 1888 } 1889 hfp_connection->ok_pending = 1; 1890 break; 1891 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1892 // expected by SLC state machine 1893 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1894 hfp_connection->send_ag_indicators_segment = 0; 1895 hfp_connection->send_ag_status_indicators = 1; 1896 break; 1897 case HFP_CMD_LIST_CURRENT_CALLS: 1898 hfp_connection->command = HFP_CMD_NONE; 1899 hfp_connection->next_call_index = 0; 1900 hfp_connection->send_status_of_current_calls = 1; 1901 break; 1902 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1903 if (subscriber_numbers_count == 0){ 1904 hfp_ag_ok(hfp_connection->rfcomm_cid); 1905 break; 1906 } 1907 hfp_connection->next_subscriber_number_to_send = 0; 1908 hfp_connection->send_subscriber_number = 1; 1909 break; 1910 case HFP_CMD_TRANSMIT_DTMF_CODES: 1911 hfp_connection->command = HFP_CMD_NONE; 1912 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &hfp_connection->line_buffer[0]); 1913 break; 1914 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1915 hfp_connection->command = HFP_CMD_NONE; 1916 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1917 break; 1918 case HFP_CMD_TURN_OFF_EC_AND_NR: 1919 hfp_connection->command = HFP_CMD_NONE; 1920 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1921 hfp_connection->ok_pending = 1; 1922 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1923 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1924 } else { 1925 hfp_connection->send_error = 1; 1926 } 1927 break; 1928 case HFP_CMD_CALL_ANSWERED: 1929 hfp_connection->command = HFP_CMD_NONE; 1930 log_info("HFP: ATA"); 1931 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1932 break; 1933 case HFP_CMD_HANG_UP_CALL: 1934 hfp_connection->command = HFP_CMD_NONE; 1935 hfp_connection->ok_pending = 1; 1936 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1937 break; 1938 case HFP_CMD_CALL_HOLD: { 1939 // TODO: fully implement this 1940 log_error("HFP: unhandled call hold type %c", hfp_connection->line_buffer[0]); 1941 hfp_connection->command = HFP_CMD_NONE; 1942 hfp_connection->ok_pending = 1; 1943 hfp_connection->call_index = 0; 1944 1945 if (hfp_connection->line_buffer[1] != '\0'){ 1946 hfp_connection->call_index = btstack_atoi((char *)&hfp_connection->line_buffer[1]); 1947 } 1948 1949 switch (hfp_connection->line_buffer[0]){ 1950 case '0': 1951 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1952 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1953 break; 1954 case '1': 1955 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1956 // Where both a held and a waiting call exist, the above procedures shall apply to the 1957 // waiting call (i.e., not to the held call) in conflicting situation. 1958 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1959 break; 1960 case '2': 1961 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1962 // Where both a held and a waiting call exist, the above procedures shall apply to the 1963 // waiting call (i.e., not to the held call) in conflicting situation. 1964 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1965 break; 1966 case '3': 1967 // Adds a held call to the conversation. 1968 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1969 break; 1970 case '4': 1971 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1972 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1973 break; 1974 default: 1975 break; 1976 } 1977 break; 1978 } 1979 case HFP_CMD_CALL_PHONE_NUMBER: 1980 hfp_connection->command = HFP_CMD_NONE; 1981 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1982 break; 1983 case HFP_CMD_REDIAL_LAST_NUMBER: 1984 hfp_connection->command = HFP_CMD_NONE; 1985 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1986 break; 1987 case HFP_CMD_ENABLE_CLIP: 1988 hfp_connection->command = HFP_CMD_NONE; 1989 hfp_connection->clip_enabled = hfp_connection->line_buffer[8] != '0'; 1990 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1991 hfp_connection->ok_pending = 1; 1992 break; 1993 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1994 hfp_connection->command = HFP_CMD_NONE; 1995 hfp_connection->call_waiting_notification_enabled = hfp_connection->line_buffer[8] != '0'; 1996 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1997 hfp_connection->ok_pending = 1; 1998 break; 1999 case HFP_CMD_SET_SPEAKER_GAIN: 2000 hfp_connection->command = HFP_CMD_NONE; 2001 hfp_connection->ok_pending = 1; 2002 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2003 break; 2004 case HFP_CMD_SET_MICROPHONE_GAIN: 2005 hfp_connection->command = HFP_CMD_NONE; 2006 hfp_connection->ok_pending = 1; 2007 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2008 break; 2009 default: 2010 break; 2011 } 2012 } 2013 2014 static void hfp_run(void){ 2015 btstack_linked_list_iterator_t it; 2016 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2017 while (btstack_linked_list_iterator_has_next(&it)){ 2018 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2019 hfp_run_for_context(hfp_connection); 2020 } 2021 } 2022 2023 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2024 switch (packet_type){ 2025 case RFCOMM_DATA_PACKET: 2026 hfp_handle_rfcomm_data(packet_type, channel, packet, size); 2027 break; 2028 case HCI_EVENT_PACKET: 2029 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2030 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2031 hfp_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2032 return; 2033 } 2034 hfp_handle_hci_event(packet_type, channel, packet, size); 2035 break; 2036 default: 2037 break; 2038 } 2039 2040 hfp_run(); 2041 } 2042 2043 2044 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2045 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2046 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2047 return; 2048 } 2049 int i; 2050 hfp_codecs_nr = codecs_nr; 2051 for (i=0; i < codecs_nr; i++){ 2052 hfp_codecs[i] = codecs[i]; 2053 } 2054 } 2055 2056 void hfp_ag_init_supported_features(uint32_t supported_features){ 2057 hfp_supported_features = supported_features; 2058 } 2059 2060 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2061 hfp_ag_indicators_nr = ag_indicators_nr; 2062 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2063 } 2064 2065 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2066 if (hf_indicators_nr > HFP_MAX_NUM_HF_INDICATORS) return; 2067 hfp_generic_status_indicators_nr = hf_indicators_nr; 2068 memcpy(hfp_generic_status_indicators, hf_indicators, hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2069 } 2070 2071 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2072 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2073 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2074 } 2075 2076 2077 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2078 // register for HCI events 2079 hci_event_callback_registration.callback = &packet_handler; 2080 hci_add_event_handler(&hci_event_callback_registration); 2081 2082 rfcomm_register_service(&packet_handler, rfcomm_channel_nr, 0xffff); 2083 2084 hfp_ag_response_and_hold_active = 0; 2085 subscriber_numbers = NULL; 2086 subscriber_numbers_count = 0; 2087 2088 hfp_set_packet_handler_for_rfcomm_connections(&packet_handler); 2089 2090 hfp_gsm_init(); 2091 } 2092 2093 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2094 hfp_establish_service_level_connection(bd_addr, SDP_Handsfree); 2095 } 2096 2097 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2098 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2099 if (!hfp_connection){ 2100 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2101 return; 2102 } 2103 hfp_release_service_level_connection(hfp_connection); 2104 hfp_run_for_context(hfp_connection); 2105 } 2106 2107 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2108 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2109 if (!hfp_connection){ 2110 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2111 return; 2112 } 2113 hfp_connection->extended_audio_gateway_error = 0; 2114 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2115 return; 2116 } 2117 hfp_connection->extended_audio_gateway_error = error; 2118 hfp_run_for_context(hfp_connection); 2119 } 2120 2121 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2122 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2123 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2124 2125 hfp_connection->establish_audio_connection = 1; 2126 2127 if (!has_codec_negotiation_feature(hfp_connection)){ 2128 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2129 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2130 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2131 // now, pick link settings 2132 hfp_init_link_settings(hfp_connection); 2133 } 2134 2135 switch (hfp_connection->codecs_state){ 2136 case HFP_CODECS_IDLE: 2137 case HFP_CODECS_RECEIVED_LIST: 2138 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2139 case HFP_CODECS_ERROR: 2140 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2141 break; 2142 default: 2143 break; 2144 } 2145 } 2146 2147 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2148 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2149 if (!hfp_connection){ 2150 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2151 return; 2152 } 2153 hfp_connection->establish_audio_connection = 0; 2154 hfp_ag_setup_audio_connection(hfp_connection); 2155 hfp_run_for_context(hfp_connection); 2156 } 2157 2158 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2159 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2160 if (!hfp_connection){ 2161 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2162 return; 2163 } 2164 hfp_release_audio_connection(hfp_connection); 2165 hfp_run_for_context(hfp_connection); 2166 } 2167 2168 /** 2169 * @brief Enable in-band ring tone 2170 */ 2171 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2172 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2173 return; 2174 } 2175 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2176 2177 btstack_linked_list_iterator_t it; 2178 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2179 while (btstack_linked_list_iterator_has_next(&it)){ 2180 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2181 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2182 hfp_run_for_context(hfp_connection); 2183 } 2184 } 2185 2186 /** 2187 * @brief Called from GSM 2188 */ 2189 void hfp_ag_incoming_call(void){ 2190 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2191 } 2192 2193 /** 2194 * @brief number is stored. 2195 */ 2196 void hfp_ag_set_clip(uint8_t type, const char * number){ 2197 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2198 } 2199 2200 void hfp_ag_call_dropped(void){ 2201 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2202 } 2203 2204 // call from AG UI 2205 void hfp_ag_answer_incoming_call(void){ 2206 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2207 } 2208 2209 void hfp_ag_join_held_call(void){ 2210 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2211 } 2212 2213 void hfp_ag_terminate_call(void){ 2214 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2215 } 2216 2217 void hfp_ag_outgoing_call_ringing(void){ 2218 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2219 } 2220 2221 void hfp_ag_outgoing_call_established(void){ 2222 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2223 } 2224 2225 void hfp_ag_outgoing_call_rejected(void){ 2226 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2227 } 2228 2229 void hfp_ag_outgoing_call_accepted(void){ 2230 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2231 } 2232 2233 void hfp_ag_hold_incoming_call(void){ 2234 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2235 } 2236 2237 void hfp_ag_accept_held_incoming_call(void) { 2238 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2239 } 2240 2241 void hfp_ag_reject_held_incoming_call(void){ 2242 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2243 } 2244 2245 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2246 int indicator_index = get_ag_indicator_index_for_name(name); 2247 if (indicator_index < 0) return; 2248 hfp_ag_indicators[indicator_index].status = value; 2249 2250 2251 btstack_linked_list_iterator_t it; 2252 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2253 while (btstack_linked_list_iterator_has_next(&it)){ 2254 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2255 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2256 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2257 continue; 2258 } 2259 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2260 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2261 hfp_run_for_context(hfp_connection); 2262 } 2263 } 2264 2265 void hfp_ag_set_registration_status(int status){ 2266 hfp_ag_set_ag_indicator("service", status); 2267 } 2268 2269 void hfp_ag_set_signal_strength(int strength){ 2270 hfp_ag_set_ag_indicator("signal", strength); 2271 } 2272 2273 void hfp_ag_set_roaming_status(int status){ 2274 hfp_ag_set_ag_indicator("roam", status); 2275 } 2276 2277 void hfp_ag_set_battery_level(int level){ 2278 hfp_ag_set_ag_indicator("battchg", level); 2279 } 2280 2281 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2282 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2283 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2284 if (!hfp_connection){ 2285 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2286 return; 2287 } 2288 2289 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2290 log_info("AG cannot acivate voice recognition - not supported by HF"); 2291 return; 2292 } 2293 2294 if (activate){ 2295 hfp_ag_establish_audio_connection(acl_handle); 2296 } 2297 2298 hfp_connection->ag_activate_voice_recognition = activate; 2299 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2300 hfp_run_for_context(hfp_connection); 2301 } 2302 2303 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2304 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2305 if (!hfp_connection){ 2306 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2307 return; 2308 } 2309 if (hfp_connection->microphone_gain != gain){ 2310 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2311 hfp_connection->microphone_gain = gain; 2312 hfp_connection->send_microphone_gain = 1; 2313 } 2314 hfp_run_for_context(hfp_connection); 2315 } 2316 2317 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2318 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2319 if (!hfp_connection){ 2320 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2321 return; 2322 } 2323 if (hfp_connection->speaker_gain != gain){ 2324 hfp_connection->speaker_gain = gain; 2325 hfp_connection->send_speaker_gain = 1; 2326 } 2327 hfp_run_for_context(hfp_connection); 2328 } 2329 2330 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2331 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2332 if (!hfp_connection){ 2333 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2334 return; 2335 } 2336 hfp_ag_set_clip(0, number); 2337 hfp_connection->send_phone_number_for_voice_tag = 1; 2338 } 2339 2340 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2341 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2342 if (!hfp_connection){ 2343 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2344 return; 2345 } 2346 hfp_connection->send_error = 1; 2347 } 2348 2349 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2350 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2351 if (!hfp_connection){ 2352 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2353 return; 2354 } 2355 hfp_connection->ok_pending = 1; 2356 } 2357 2358 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2359 subscriber_numbers = numbers; 2360 subscriber_numbers_count = numbers_count; 2361 } 2362 2363 void hfp_ag_clear_last_dialed_number(void){ 2364 hfp_gsm_clear_last_dialed_number(); 2365 } 2366 2367 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2368 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2369 if (!hfp_connection){ 2370 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2371 return; 2372 } 2373 if (!hfp_connection->call_waiting_notification_enabled) return; 2374 2375 hfp_connection->ag_notify_incoming_call_waiting = 1; 2376 hfp_run_for_context(hfp_connection); 2377 } 2378 2379