1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define __BTSTACK_FILE__ "hfp_ag.c" 39 40 // ***************************************************************************** 41 // 42 // HFP Audio Gateway (AG) unit 43 // 44 // ***************************************************************************** 45 46 #include "btstack_config.h" 47 48 #include <stdint.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 53 #include "hci_cmd.h" 54 #include "btstack_run_loop.h" 55 56 #include "hci.h" 57 #include "btstack_memory.h" 58 #include "hci_dump.h" 59 #include "l2cap.h" 60 #include "btstack_debug.h" 61 #include "btstack_event.h" 62 #include "classic/core.h" 63 #include "classic/hfp.h" 64 #include "classic/hfp_ag.h" 65 #include "classic/hfp_gsm_model.h" 66 #include "classic/sdp_client_rfcomm.h" 67 #include "classic/sdp_server.h" 68 #include "classic/sdp_util.h" 69 70 // private prototypes 71 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 72 static void hfp_run_for_context(hfp_connection_t *context); 73 static void hfp_ag_setup_audio_connection(hfp_connection_t * connection); 74 static void hfp_ag_hf_start_ringing(hfp_connection_t * context); 75 76 // public prototypes 77 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 78 int get_hfp_generic_status_indicators_nr(void); 79 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 80 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 81 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 82 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 83 84 // gobals 85 static const char default_hfp_ag_service_name[] = "Voice gateway"; 86 87 static uint16_t hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 88 89 static uint8_t hfp_codecs_nr = 0; 90 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 91 92 static int hfp_ag_indicators_nr = 0; 93 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_AG_INDICATORS]; 94 95 static int hfp_generic_status_indicators_nr = 0; 96 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_HF_INDICATORS]; 97 98 static int hfp_ag_call_hold_services_nr = 0; 99 static char *hfp_ag_call_hold_services[6]; 100 static btstack_packet_handler_t hfp_callback; 101 102 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 103 static int hfp_ag_response_and_hold_active = 0; 104 105 // Subcriber information entries 106 static hfp_phone_number_t * subscriber_numbers = NULL; 107 static int subscriber_numbers_count = 0; 108 109 static btstack_packet_callback_registration_t hci_event_callback_registration; 110 static void hfp_run_for_context(hfp_connection_t *hfp_connection); 111 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 112 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection); 113 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection); 114 115 116 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 117 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 118 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 119 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 120 } 121 return hfp_connection->ag_indicators_nr; 122 } 123 124 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 125 // TODO: save only value, and value changed in the hfp_connection? 126 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 127 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 128 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 129 } 130 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 131 } 132 133 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 134 int i; 135 for (i = 0; i < hfp_ag_indicators_nr; i++){ 136 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 137 return &hfp_ag_indicators[i]; 138 } 139 } 140 return NULL; 141 } 142 143 static int get_ag_indicator_index_for_name(const char * name){ 144 int i; 145 for (i = 0; i < hfp_ag_indicators_nr; i++){ 146 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 147 return i; 148 } 149 } 150 return -1; 151 } 152 153 154 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 155 if (callback == NULL){ 156 log_error("hfp_ag_register_packet_handler called with NULL callback"); 157 return; 158 } 159 hfp_callback = callback; 160 hfp_set_callback(callback); 161 } 162 163 static int use_in_band_tone(void){ 164 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 165 } 166 167 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 168 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 169 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 170 return hf && ag; 171 } 172 173 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 174 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 175 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 176 return hf && ag; 177 } 178 179 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 180 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 181 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 182 return hf && ag; 183 } 184 185 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){ 186 if (!name){ 187 name = default_hfp_ag_service_name; 188 } 189 hfp_create_sdp_record(service, service_record_handle, SDP_HandsfreeAudioGateway, rfcomm_channel_nr, name); 190 191 /* 192 * 0x01 – Ability to reject a call 193 * 0x00 – No ability to reject a call 194 */ 195 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 196 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 197 198 // Construct SupportedFeatures for SDP bitmap: 199 // 200 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 201 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 202 // 203 uint16_t sdp_features = supported_features &0x1f; 204 if (supported_features & wide_band_speech){ 205 sdp_features |= 1 << 5; // Wide band speech bit 206 } 207 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 208 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 209 } 210 211 static int hfp_ag_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 212 char buffer[20]; 213 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 214 return send_str_over_rfcomm(cid, buffer); 215 } 216 217 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 218 char buffer[40]; 219 sprintf(buffer, "\r\n%s:%d\r\n\r\nOK\r\n", HFP_SUPPORTED_FEATURES, hfp_supported_features); 220 return send_str_over_rfcomm(cid, buffer); 221 } 222 223 static int hfp_ag_ok(uint16_t cid){ 224 char buffer[10]; 225 sprintf(buffer, "\r\nOK\r\n"); 226 return send_str_over_rfcomm(cid, buffer); 227 } 228 229 static int hfp_ag_ring(uint16_t cid){ 230 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 231 } 232 233 static int hfp_ag_send_clip(uint16_t cid){ 234 char buffer[50]; 235 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 236 return send_str_over_rfcomm(cid, buffer); 237 } 238 239 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 240 char buffer[50]; 241 sprintf(buffer, "\r\n%s: ,\"%s\",%u, , \r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 242 return send_str_over_rfcomm(cid, buffer); 243 } 244 245 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 246 char buffer[50]; 247 sprintf(buffer, "\r\n%s: %s\r\n", HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 248 return send_str_over_rfcomm(cid, buffer); 249 } 250 251 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 252 char buffer[50]; 253 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 254 return send_str_over_rfcomm(cid, buffer); 255 } 256 257 static int hfp_ag_error(uint16_t cid){ 258 char buffer[10]; 259 sprintf(buffer, "\r\nERROR\r\n"); 260 return send_str_over_rfcomm(cid, buffer); 261 } 262 263 static int hfp_ag_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 264 char buffer[20]; 265 sprintf(buffer, "\r\n%s=%d\r\n", HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 266 return send_str_over_rfcomm(cid, buffer); 267 } 268 269 // fast & small implementation for fixed int size 270 static int string_len_for_uint32(uint32_t i){ 271 if (i < 10) return 1; 272 if (i < 100) return 2; 273 if (i < 1000) return 3; 274 if (i < 10000) return 4; 275 if (i < 100000) return 5; 276 if (i < 1000000) return 6; 277 if (i < 10000000) return 7; 278 if (i < 100000000) return 8; 279 if (i < 1000000000) return 9; 280 return 10; 281 } 282 283 // get size for indicator string 284 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 285 // template: ("$NAME",($MIN,$MAX)) 286 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 287 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 288 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 289 } 290 291 // store indicator 292 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer){ 293 sprintf((char *) buffer, "(\"%s\",(%d,%d)),", 294 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 295 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 296 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 297 } 298 299 // structure: header [indicator [comma indicator]] footer 300 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 301 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 302 if (!num_indicators) return 2; 303 return 3 + (num_indicators-1) * 2; 304 } 305 306 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 307 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 308 if (index == 0) { 309 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 310 } 311 index--; 312 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 313 int indicator_index = index >> 1; 314 if ((index & 1) == 0){ 315 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 316 } 317 if (indicator_index == num_indicators - 1){ 318 return 8; // "\r\n\r\nOK\r\n" 319 } 320 return 1; // comma 321 } 322 323 static void hgp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer){ 324 if (index == 0){ 325 *buffer++ = '\r'; 326 *buffer++ = '\n'; 327 int len = strlen(HFP_INDICATOR); 328 memcpy(buffer, HFP_INDICATOR, len); 329 buffer += len; 330 *buffer++ = ':'; 331 return; 332 } 333 index--; 334 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 335 int indicator_index = index >> 1; 336 if ((index & 1) == 0){ 337 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer); 338 return; 339 } 340 if (indicator_index == num_indicators-1){ 341 memcpy(buffer, "\r\n\r\nOK\r\n", 8); 342 return; 343 } 344 *buffer = ','; 345 } 346 347 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 348 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 349 int i; 350 int offset = 0; 351 for (i = 0; i < hfp_generic_status_indicators_nr-1; i++) { 352 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 353 } 354 if (i < hfp_generic_status_indicators_nr){ 355 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 356 } 357 return offset; 358 } 359 360 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 361 if (buffer_size < hfp_generic_status_indicators_nr * 3) return 0; 362 int i; 363 int offset = 0; 364 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 365 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); 366 } 367 return offset; 368 } 369 370 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 371 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 372 int i; 373 int offset = 0; 374 for (i = 0; i < hfp_ag_indicators_nr-1; i++) { 375 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 376 } 377 if (i<hfp_ag_indicators_nr){ 378 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 379 } 380 return offset; 381 } 382 383 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 384 if (buffer_size < hfp_ag_call_hold_services_nr * 3) return 0; 385 int i; 386 int offset = snprintf(buffer, buffer_size, "("); 387 for (i = 0; i < hfp_ag_call_hold_services_nr-1; i++) { 388 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 389 } 390 if (i<hfp_ag_call_hold_services_nr){ 391 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 392 } 393 return offset; 394 } 395 396 static int hfp_ag_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 397 int start_segment, int num_segments, 398 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 399 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer)){ 400 401 // assumes: can send now == true 402 // assumes: num segments > 0 403 // assumes: individual segments are smaller than MTU 404 rfcomm_reserve_packet_buffer(); 405 int mtu = rfcomm_get_max_frame_size(cid); 406 uint8_t * data = rfcomm_get_outgoing_buffer(); 407 int offset = 0; 408 int segment = start_segment; 409 while (segment < num_segments){ 410 int segment_len = get_segment_len(hfp_connection, segment); 411 if (offset + segment_len > mtu) break; 412 // append segement 413 store_segment(hfp_connection, segment, data+offset); 414 offset += segment_len; 415 segment++; 416 } 417 rfcomm_send_prepared(cid, offset); 418 return segment; 419 } 420 421 // returns next segment to store 422 static int hfp_ag_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 423 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 424 return hfp_ag_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 425 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 426 } 427 428 static int hfp_ag_retrieve_indicators_status_cmd(uint16_t cid){ 429 char buffer[40]; 430 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_INDICATOR); 431 offset += hfp_ag_indicators_status_join(buffer+offset, sizeof(buffer)-offset); 432 433 buffer[offset] = 0; 434 435 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 436 buffer[offset] = 0; 437 return send_str_over_rfcomm(cid, buffer); 438 } 439 440 static int hfp_ag_set_indicator_status_update_cmd(uint16_t cid, uint8_t activate){ 441 UNUSED(activate); 442 443 // AT\r\n%s:3,0,0,%d\r\n 444 return hfp_ag_ok(cid); 445 } 446 447 448 static int hfp_ag_retrieve_can_hold_call_cmd(uint16_t cid){ 449 char buffer[40]; 450 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 451 offset += hfp_ag_call_services_join(buffer+offset, sizeof(buffer)-offset); 452 453 buffer[offset] = 0; 454 455 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 456 buffer[offset] = 0; 457 return send_str_over_rfcomm(cid, buffer); 458 } 459 460 461 static int hfp_ag_list_supported_generic_status_indicators_cmd(uint16_t cid){ 462 return hfp_ag_ok(cid); 463 } 464 465 static int hfp_ag_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 466 char buffer[40]; 467 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 468 offset += hfp_hf_indicators_join(buffer+offset, sizeof(buffer)-offset); 469 470 buffer[offset] = 0; 471 472 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ")\r\n\r\nOK\r\n"); 473 buffer[offset] = 0; 474 return send_str_over_rfcomm(cid, buffer); 475 } 476 477 static int hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 478 char buffer[40]; 479 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer)); 480 481 buffer[offset] = 0; 482 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 483 buffer[offset] = 0; 484 return send_str_over_rfcomm(cid, buffer); 485 } 486 487 static int hfp_ag_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 488 char buffer[20]; 489 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 490 return send_str_over_rfcomm(cid, buffer); 491 } 492 493 static int hfp_ag_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 494 char buffer[40]; 495 if (strlen(op.name) == 0){ 496 sprintf(buffer, "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 497 } else { 498 sprintf(buffer, "\r\n%s:%d,%d,%s\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format, op.name); 499 } 500 return send_str_over_rfcomm(cid, buffer); 501 } 502 503 504 static int hfp_ag_cmd_suggest_codec(uint16_t cid, uint8_t codec){ 505 char buffer[30]; 506 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CONFIRM_COMMON_CODEC, codec); 507 return send_str_over_rfcomm(cid, buffer); 508 } 509 510 static int hfp_ag_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 511 char buffer[30]; 512 sprintf(buffer, "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 513 return send_str_over_rfcomm(cid, buffer); 514 } 515 516 static int hfp_ag_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 517 char buffer[30]; 518 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_SPEAKER_GAIN, gain); 519 return send_str_over_rfcomm(cid, buffer); 520 } 521 522 static int hfp_ag_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 523 char buffer[30]; 524 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_MICROPHONE_GAIN, gain); 525 return send_str_over_rfcomm(cid, buffer); 526 } 527 528 static int hfp_ag_set_response_and_hold(uint16_t cid, int state){ 529 char buffer[30]; 530 sprintf(buffer, "\r\n%s: %d\r\n", HFP_RESPONSE_AND_HOLD, state); 531 return send_str_over_rfcomm(cid, buffer); 532 } 533 534 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 535 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 536 537 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 538 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 539 return HFP_CODEC_MSBC; 540 } 541 } 542 return HFP_CODEC_CVSD; 543 } 544 545 static void hfp_init_link_settings(hfp_connection_t * hfp_connection){ 546 // determine highest possible link setting 547 hfp_connection->link_setting = HFP_LINK_SETTINGS_D1; 548 // anything else requires eSCO support on both sides 549 if (hci_extended_sco_link_supported() && hci_remote_esco_supported(hfp_connection->acl_handle)){ 550 switch (hfp_connection->negotiated_codec){ 551 case HFP_CODEC_CVSD: 552 hfp_connection->link_setting = HFP_LINK_SETTINGS_S3; 553 if ((hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) 554 && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4))){ 555 hfp_connection->link_setting = HFP_LINK_SETTINGS_S4; 556 } 557 break; 558 case HFP_CODEC_MSBC: 559 hfp_connection->link_setting = HFP_LINK_SETTINGS_T2; 560 break; 561 default: 562 break; 563 } 564 } 565 log_info("hfp_init_link_settings: %u", hfp_connection->link_setting); 566 } 567 568 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 569 /* events ( == commands): 570 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 571 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 572 hf_trigger_codec_connection_setup == received BCC 573 ag_trigger_codec_connection_setup == received from AG to send BCS 574 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 575 */ 576 577 switch (hfp_connection->codecs_state){ 578 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 579 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 580 break; 581 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 582 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 583 break; 584 default: 585 break; 586 } 587 588 // printf(" -> State machine: CC\n"); 589 590 switch (hfp_connection->command){ 591 case HFP_CMD_AVAILABLE_CODECS: 592 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 593 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 594 hfp_ag_ok(hfp_connection->rfcomm_cid); 595 return 1; 596 } 597 598 switch (hfp_connection->codecs_state){ 599 case HFP_CODECS_AG_SENT_COMMON_CODEC: 600 case HFP_CODECS_EXCHANGED: 601 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 602 break; 603 default: 604 break; 605 } 606 hfp_ag_ok(hfp_connection->rfcomm_cid); 607 return 1; 608 609 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 610 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 611 hfp_ag_ok(hfp_connection->rfcomm_cid); 612 return 1; 613 614 case HFP_CMD_AG_SEND_COMMON_CODEC: 615 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 616 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 617 hfp_ag_cmd_suggest_codec(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 618 return 1; 619 620 case HFP_CMD_HF_CONFIRMED_CODEC: 621 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 622 hfp_connection->codecs_state = HFP_CODECS_ERROR; 623 hfp_ag_error(hfp_connection->rfcomm_cid); 624 return 1; 625 } 626 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 627 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 628 log_info("hfp: codec confirmed: %s", hfp_connection->negotiated_codec == HFP_CODEC_MSBC ? "mSBC" : "CVSD"); 629 hfp_ag_ok(hfp_connection->rfcomm_cid); 630 // now, pick link settings 631 hfp_init_link_settings(hfp_connection); 632 return 1; 633 default: 634 break; 635 } 636 return 0; 637 } 638 639 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 640 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 641 hfp_emit_slc_connection_event(hfp_callback, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 642 643 // if active call exist, set per-hfp_connection state active, too (when audio is on) 644 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 645 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 646 } 647 // if AG is ringing, also start ringing on the HF 648 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS && 649 hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 650 hfp_ag_hf_start_ringing(hfp_connection); 651 } 652 } 653 654 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 655 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 656 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 657 int done = 0; 658 switch(hfp_connection->command){ 659 case HFP_CMD_SUPPORTED_FEATURES: 660 switch(hfp_connection->state){ 661 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 662 case HFP_EXCHANGE_SUPPORTED_FEATURES: 663 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 664 if (has_codec_negotiation_feature(hfp_connection)){ 665 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 666 } else { 667 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 668 } 669 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 670 return 1; 671 default: 672 break; 673 } 674 break; 675 case HFP_CMD_AVAILABLE_CODECS: 676 done = codecs_exchange_state_machine(hfp_connection); 677 678 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 679 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 680 } 681 return done; 682 683 case HFP_CMD_RETRIEVE_AG_INDICATORS: 684 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 685 // HF requested AG Indicators and we did expect it 686 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 687 // continue below in state switch 688 } 689 break; 690 691 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 692 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 693 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 694 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 695 return 1; 696 697 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 698 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 699 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 700 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 701 } else if (has_hf_indicators_feature(hfp_connection)){ 702 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 703 } else { 704 hfp_ag_slc_established(hfp_connection); 705 } 706 hfp_ag_set_indicator_status_update_cmd(hfp_connection->rfcomm_cid, 1); 707 return 1; 708 709 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 710 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 711 if (has_hf_indicators_feature(hfp_connection)){ 712 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 713 } 714 hfp_ag_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 715 if (!has_hf_indicators_feature(hfp_connection)){ 716 hfp_ag_slc_established(hfp_connection); 717 } 718 return 1; 719 720 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 721 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 722 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 723 hfp_ag_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 724 return 1; 725 726 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 727 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 728 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 729 hfp_ag_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 730 return 1; 731 732 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 733 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 734 hfp_ag_slc_established(hfp_connection); 735 hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 736 return 1; 737 default: 738 break; 739 } 740 741 switch (hfp_connection->state){ 742 case HFP_RETRIEVE_INDICATORS: { 743 int next_segment = hfp_ag_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 744 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 745 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 746 if (next_segment < num_segments){ 747 // prepare sending of next segment 748 hfp_connection->send_ag_indicators_segment = next_segment; 749 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 750 } else { 751 // done, go to next state 752 hfp_connection->send_ag_indicators_segment = 0; 753 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 754 } 755 return 1; 756 } 757 default: 758 break; 759 } 760 761 return done; 762 } 763 764 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 765 766 int done = codecs_exchange_state_machine(hfp_connection); 767 if (done) return done; 768 769 switch(hfp_connection->command){ 770 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 771 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 772 hfp_ag_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 773 return 1; 774 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 775 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 776 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 777 hfp_ag_ok(hfp_connection->rfcomm_cid); 778 hfp_ag_setup_audio_connection(hfp_connection); 779 } else { 780 hfp_ag_error(hfp_connection->rfcomm_cid); 781 } 782 return 1; 783 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 784 hfp_ag_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 785 return 1; 786 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 787 hfp_ag_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 788 return 1; 789 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 790 if (hfp_connection->network_operator.format != 0){ 791 hfp_ag_error(hfp_connection->rfcomm_cid); 792 } else { 793 hfp_ag_ok(hfp_connection->rfcomm_cid); 794 } 795 return 1; 796 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 797 hfp_ag_ok(hfp_connection->rfcomm_cid); 798 return 1; 799 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 800 if (hfp_connection->extended_audio_gateway_error){ 801 hfp_connection->extended_audio_gateway_error = 0; 802 hfp_ag_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 803 return 1; 804 } 805 break; 806 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 807 hfp_ag_ok(hfp_connection->rfcomm_cid); 808 return 1; 809 default: 810 break; 811 } 812 return 0; 813 } 814 815 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 816 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 817 hfp_connection->state > HFP_W2_DISCONNECT_SCO) return 0; 818 819 820 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->release_audio_connection){ 821 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 822 hfp_connection->release_audio_connection = 0; 823 gap_disconnect(hfp_connection->sco_handle); 824 return 1; 825 } 826 827 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 828 829 // run codecs exchange 830 int done = codecs_exchange_state_machine(hfp_connection); 831 if (done) return done; 832 833 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return done; 834 if (hfp_connection->establish_audio_connection){ 835 hfp_connection->state = HFP_W4_SCO_CONNECTED; 836 hfp_connection->establish_audio_connection = 0; 837 hfp_setup_synchronous_connection(hfp_connection); 838 return 1; 839 } 840 return 0; 841 } 842 843 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 844 btstack_linked_list_iterator_t it; 845 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 846 847 while (btstack_linked_list_iterator_has_next(&it)){ 848 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 849 if ( & hfp_connection->hfp_timeout == ts) { 850 return hfp_connection; 851 } 852 } 853 return NULL; 854 } 855 856 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 857 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 858 if (!hfp_connection) return; 859 860 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 861 hfp_connection->ag_ring = 1; 862 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 863 864 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 865 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 866 867 hfp_run_for_context(hfp_connection); 868 } 869 870 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 871 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 872 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 873 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 874 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 875 } 876 877 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 878 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 879 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 880 } 881 882 // 883 // transitition implementations for hfp_ag_call_state_machine 884 // 885 886 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 887 if (use_in_band_tone()){ 888 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 889 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 890 } else { 891 hfp_timeout_start(hfp_connection); 892 hfp_connection->ag_ring = 1; 893 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 894 hfp_connection->call_state = HFP_CALL_RINGING; 895 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 896 } 897 } 898 899 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 900 hfp_connection->ag_ring = 0; 901 hfp_connection->ag_send_clip = 0; 902 hfp_timeout_stop(hfp_connection); 903 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_STOP_RINGINIG); 904 } 905 906 static void hfp_ag_trigger_incoming_call(void){ 907 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 908 if (indicator_index < 0) return; 909 910 btstack_linked_list_iterator_t it; 911 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 912 while (btstack_linked_list_iterator_has_next(&it)){ 913 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 914 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 915 if (hfp_connection->call_state == HFP_CALL_IDLE){ 916 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 917 hfp_ag_hf_start_ringing(hfp_connection); 918 } 919 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 920 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 921 } 922 hfp_run_for_context(hfp_connection); 923 } 924 } 925 926 static void hfp_ag_transfer_callsetup_state(void){ 927 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 928 if (indicator_index < 0) return; 929 930 btstack_linked_list_iterator_t it; 931 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 932 while (btstack_linked_list_iterator_has_next(&it)){ 933 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 934 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 935 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 936 hfp_run_for_context(hfp_connection); 937 } 938 } 939 940 static void hfp_ag_transfer_call_state(void){ 941 int indicator_index = get_ag_indicator_index_for_name("call"); 942 if (indicator_index < 0) return; 943 944 btstack_linked_list_iterator_t it; 945 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 946 while (btstack_linked_list_iterator_has_next(&it)){ 947 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 948 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 949 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 950 hfp_run_for_context(hfp_connection); 951 } 952 } 953 954 static void hfp_ag_transfer_callheld_state(void){ 955 int indicator_index = get_ag_indicator_index_for_name("callheld"); 956 if (indicator_index < 0) return; 957 958 btstack_linked_list_iterator_t it; 959 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 960 while (btstack_linked_list_iterator_has_next(&it)){ 961 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 962 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 963 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 964 hfp_run_for_context(hfp_connection); 965 } 966 } 967 968 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 969 970 int call_indicator_index = get_ag_indicator_index_for_name("call"); 971 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 972 973 btstack_linked_list_iterator_t it; 974 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 975 while (btstack_linked_list_iterator_has_next(&it)){ 976 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 977 if (hfp_connection->call_state != HFP_CALL_RINGING && 978 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 979 980 hfp_ag_hf_stop_ringing(hfp_connection); 981 if (hfp_connection == source){ 982 hfp_connection->ok_pending = 1; 983 984 if (use_in_band_tone()){ 985 hfp_connection->call_state = HFP_CALL_ACTIVE; 986 } else { 987 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 988 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 989 } 990 991 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 992 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 993 994 } else { 995 hfp_connection->call_state = HFP_CALL_IDLE; 996 } 997 hfp_run_for_context(hfp_connection); 998 } 999 } 1000 1001 static void hfp_ag_ag_accept_call(void){ 1002 1003 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1004 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1005 1006 btstack_linked_list_iterator_t it; 1007 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1008 while (btstack_linked_list_iterator_has_next(&it)){ 1009 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1010 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 1011 1012 hfp_ag_hf_stop_ringing(hfp_connection); 1013 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1014 1015 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1016 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1017 1018 hfp_run_for_context(hfp_connection); 1019 break; // only single 1020 } 1021 } 1022 1023 static void hfp_ag_trigger_reject_call(void){ 1024 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1025 btstack_linked_list_iterator_t it; 1026 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1027 while (btstack_linked_list_iterator_has_next(&it)){ 1028 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1029 if (connection->call_state != HFP_CALL_RINGING && 1030 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1031 hfp_ag_hf_stop_ringing(connection); 1032 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1033 connection->call_state = HFP_CALL_IDLE; 1034 hfp_run_for_context(connection); 1035 } 1036 } 1037 1038 static void hfp_ag_trigger_terminate_call(void){ 1039 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1040 1041 btstack_linked_list_iterator_t it; 1042 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1043 while (btstack_linked_list_iterator_has_next(&it)){ 1044 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1045 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1046 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1047 hfp_connection->call_state = HFP_CALL_IDLE; 1048 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1049 hfp_connection->release_audio_connection = 1; 1050 hfp_run_for_context(hfp_connection); 1051 } 1052 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_TERMINATED); 1053 } 1054 1055 static void hfp_ag_set_callsetup_indicator(void){ 1056 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1057 if (!indicator){ 1058 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1059 return; 1060 }; 1061 indicator->status = hfp_gsm_callsetup_status(); 1062 } 1063 1064 static void hfp_ag_set_callheld_indicator(void){ 1065 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1066 if (!indicator){ 1067 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1068 return; 1069 }; 1070 indicator->status = hfp_gsm_callheld_status(); 1071 } 1072 1073 static void hfp_ag_set_call_indicator(void){ 1074 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1075 if (!indicator){ 1076 log_error("hfp_ag_set_call_state: call indicator is missing"); 1077 return; 1078 }; 1079 indicator->status = hfp_gsm_call_status(); 1080 } 1081 1082 static void hfp_ag_stop_ringing(void){ 1083 btstack_linked_list_iterator_t it; 1084 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1085 while (btstack_linked_list_iterator_has_next(&it)){ 1086 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1087 if (hfp_connection->call_state != HFP_CALL_RINGING && 1088 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1089 hfp_ag_hf_stop_ringing(hfp_connection); 1090 } 1091 } 1092 1093 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1094 btstack_linked_list_iterator_t it; 1095 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1096 while (btstack_linked_list_iterator_has_next(&it)){ 1097 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1098 if (hfp_connection->call_state == call_state) return hfp_connection; 1099 } 1100 return NULL; 1101 } 1102 1103 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1104 btstack_linked_list_iterator_t it; 1105 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1106 while (btstack_linked_list_iterator_has_next(&it)){ 1107 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1108 hfp_connection->send_response_and_hold_status = state + 1; 1109 } 1110 } 1111 1112 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1113 int indicator_index; 1114 switch (hfp_connection->call_state){ 1115 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1116 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1117 // we got event: audio hfp_connection established 1118 hfp_timeout_start(hfp_connection); 1119 hfp_connection->ag_ring = 1; 1120 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1121 hfp_connection->call_state = HFP_CALL_RINGING; 1122 hfp_connection->call_state = HFP_CALL_RINGING; 1123 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 1124 break; 1125 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1126 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1127 // we got event: audio hfp_connection established 1128 hfp_connection->call_state = HFP_CALL_ACTIVE; 1129 break; 1130 case HFP_CALL_W2_SEND_CALL_WAITING: 1131 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1132 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1133 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1134 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1135 break; 1136 default: 1137 break; 1138 } 1139 return 0; 1140 } 1141 // hfp_connection is used to identify originating HF 1142 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1143 int indicator_index; 1144 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1145 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1146 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1147 1148 //printf("hfp_ag_call_sm event %d \n", event); 1149 switch (event){ 1150 case HFP_AG_INCOMING_CALL: 1151 switch (hfp_gsm_call_status()){ 1152 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1153 switch (hfp_gsm_callsetup_status()){ 1154 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1155 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1156 hfp_ag_set_callsetup_indicator(); 1157 hfp_ag_trigger_incoming_call(); 1158 log_info("AG rings"); 1159 break; 1160 default: 1161 break; 1162 } 1163 break; 1164 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1165 switch (hfp_gsm_callsetup_status()){ 1166 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1167 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1168 hfp_ag_set_callsetup_indicator(); 1169 hfp_ag_trigger_incoming_call(); 1170 log_info("AG call waiting"); 1171 break; 1172 default: 1173 break; 1174 } 1175 break; 1176 } 1177 break; 1178 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1179 switch (hfp_gsm_call_status()){ 1180 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1181 switch (hfp_gsm_callsetup_status()){ 1182 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1183 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1184 hfp_ag_set_call_indicator(); 1185 hfp_ag_set_callsetup_indicator(); 1186 hfp_ag_ag_accept_call(); 1187 log_info("AG answers call, accept call by GSM"); 1188 break; 1189 default: 1190 break; 1191 } 1192 break; 1193 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1194 switch (hfp_gsm_callsetup_status()){ 1195 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1196 log_info("AG: current call is placed on hold, incoming call gets active"); 1197 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1198 hfp_ag_set_callsetup_indicator(); 1199 hfp_ag_set_callheld_indicator(); 1200 hfp_ag_transfer_callsetup_state(); 1201 hfp_ag_transfer_callheld_state(); 1202 break; 1203 default: 1204 break; 1205 } 1206 break; 1207 } 1208 break; 1209 1210 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1211 switch (hfp_gsm_call_status()){ 1212 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1213 switch (hfp_gsm_callheld_status()){ 1214 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1215 log_info("AG: joining held call with active call"); 1216 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1217 hfp_ag_set_callheld_indicator(); 1218 hfp_ag_transfer_callheld_state(); 1219 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1220 break; 1221 default: 1222 break; 1223 } 1224 break; 1225 default: 1226 break; 1227 } 1228 break; 1229 1230 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1231 switch (hfp_gsm_call_status()){ 1232 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1233 switch (hfp_gsm_callsetup_status()){ 1234 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1235 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1236 hfp_ag_set_callsetup_indicator(); 1237 hfp_ag_set_call_indicator(); 1238 hfp_ag_hf_accept_call(hfp_connection); 1239 log_info("HF answers call, accept call by GSM"); 1240 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_ANSWERED); 1241 break; 1242 default: 1243 break; 1244 } 1245 break; 1246 default: 1247 break; 1248 } 1249 break; 1250 1251 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1252 switch (hfp_gsm_call_status()){ 1253 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1254 switch (hfp_gsm_callsetup_status()){ 1255 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1256 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1257 hfp_ag_response_and_hold_active = 1; 1258 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1259 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1260 // as with regualr call 1261 hfp_ag_set_call_indicator(); 1262 hfp_ag_set_callsetup_indicator(); 1263 hfp_ag_ag_accept_call(); 1264 log_info("AG response and hold - hold by AG"); 1265 break; 1266 default: 1267 break; 1268 } 1269 break; 1270 default: 1271 break; 1272 } 1273 break; 1274 1275 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1276 switch (hfp_gsm_call_status()){ 1277 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1278 switch (hfp_gsm_callsetup_status()){ 1279 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1280 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1281 hfp_ag_response_and_hold_active = 1; 1282 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1283 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1284 // as with regualr call 1285 hfp_ag_set_call_indicator(); 1286 hfp_ag_set_callsetup_indicator(); 1287 hfp_ag_hf_accept_call(hfp_connection); 1288 log_info("AG response and hold - hold by HF"); 1289 break; 1290 default: 1291 break; 1292 } 1293 break; 1294 default: 1295 break; 1296 } 1297 break; 1298 1299 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1300 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1301 if (!hfp_ag_response_and_hold_active) break; 1302 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1303 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1304 hfp_ag_response_and_hold_active = 0; 1305 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1306 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1307 log_info("Held Call accepted and active"); 1308 break; 1309 1310 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1311 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1312 if (!hfp_ag_response_and_hold_active) break; 1313 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1314 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1315 hfp_ag_response_and_hold_active = 0; 1316 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1317 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1318 // from terminate by ag 1319 hfp_ag_set_call_indicator(); 1320 hfp_ag_trigger_terminate_call(); 1321 break; 1322 1323 case HFP_AG_TERMINATE_CALL_BY_HF: 1324 switch (hfp_gsm_call_status()){ 1325 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1326 switch (hfp_gsm_callsetup_status()){ 1327 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1328 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1329 hfp_ag_set_callsetup_indicator(); 1330 hfp_ag_transfer_callsetup_state(); 1331 hfp_ag_trigger_reject_call(); 1332 log_info("HF Rejected Incoming call, AG terminate call"); 1333 break; 1334 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1335 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1336 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1337 hfp_ag_set_callsetup_indicator(); 1338 hfp_ag_transfer_callsetup_state(); 1339 log_info("AG terminate outgoing call process"); 1340 break; 1341 default: 1342 break; 1343 } 1344 break; 1345 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1346 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1347 hfp_ag_set_call_indicator(); 1348 hfp_ag_transfer_call_state(); 1349 hfp_connection->call_state = HFP_CALL_IDLE; 1350 log_info("AG terminate call"); 1351 break; 1352 } 1353 break; 1354 1355 case HFP_AG_TERMINATE_CALL_BY_AG: 1356 switch (hfp_gsm_call_status()){ 1357 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1358 switch (hfp_gsm_callsetup_status()){ 1359 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1360 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1361 hfp_ag_set_callsetup_indicator(); 1362 hfp_ag_trigger_reject_call(); 1363 log_info("AG Rejected Incoming call, AG terminate call"); 1364 break; 1365 default: 1366 break; 1367 } 1368 break; 1369 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1370 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1371 hfp_ag_set_callsetup_indicator(); 1372 hfp_ag_set_call_indicator(); 1373 hfp_ag_trigger_terminate_call(); 1374 log_info("AG terminate call"); 1375 break; 1376 default: 1377 break; 1378 } 1379 break; 1380 case HFP_AG_CALL_DROPPED: 1381 switch (hfp_gsm_call_status()){ 1382 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1383 switch (hfp_gsm_callsetup_status()){ 1384 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1385 hfp_ag_stop_ringing(); 1386 log_info("Incoming call interrupted"); 1387 break; 1388 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1389 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1390 log_info("Outgoing call interrupted\n"); 1391 log_info("AG notify call dropped\n"); 1392 break; 1393 default: 1394 break; 1395 } 1396 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1397 hfp_ag_set_callsetup_indicator(); 1398 hfp_ag_transfer_callsetup_state(); 1399 break; 1400 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1401 if (hfp_ag_response_and_hold_active) { 1402 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1403 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1404 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1405 } 1406 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1407 hfp_ag_set_callsetup_indicator(); 1408 hfp_ag_set_call_indicator(); 1409 hfp_ag_trigger_terminate_call(); 1410 log_info("AG notify call dropped"); 1411 break; 1412 default: 1413 break; 1414 } 1415 break; 1416 1417 case HFP_AG_OUTGOING_CALL_INITIATED: 1418 // directly reject call if number of free slots is exceeded 1419 if (!hfp_gsm_call_possible()){ 1420 hfp_connection->send_error = 1; 1421 hfp_run_for_context(hfp_connection); 1422 break; 1423 } 1424 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1425 1426 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1427 1428 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1429 break; 1430 1431 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1432 // directly reject call if number of free slots is exceeded 1433 if (!hfp_gsm_call_possible()){ 1434 hfp_connection->send_error = 1; 1435 hfp_run_for_context(hfp_connection); 1436 break; 1437 } 1438 1439 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1440 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1441 1442 log_info("Redial last number"); 1443 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1444 1445 if (strlen(last_dialed_number) > 0){ 1446 log_info("Last number exists: accept call"); 1447 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1448 } else { 1449 log_info("log_infoLast number missing: reject call"); 1450 hfp_ag_outgoing_call_rejected(); 1451 } 1452 break; 1453 } 1454 case HFP_AG_OUTGOING_CALL_REJECTED: 1455 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1456 if (!hfp_connection){ 1457 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1458 break; 1459 } 1460 1461 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1462 hfp_connection->call_state = HFP_CALL_IDLE; 1463 hfp_connection->send_error = 1; 1464 hfp_run_for_context(hfp_connection); 1465 break; 1466 1467 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1468 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1469 if (!hfp_connection){ 1470 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1471 break; 1472 } 1473 1474 hfp_connection->ok_pending = 1; 1475 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1476 1477 // trigger callsetup to be 1478 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1479 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1480 1481 hfp_ag_set_callsetup_indicator(); 1482 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1483 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1484 1485 // put current call on hold if active 1486 if (put_call_on_hold){ 1487 log_info("AG putting current call on hold for new outgoing calllog_info"); 1488 hfp_ag_set_callheld_indicator(); 1489 indicator_index = get_ag_indicator_index_for_name("callheld"); 1490 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1491 } 1492 1493 // start audio if needed 1494 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1495 break; 1496 } 1497 case HFP_AG_OUTGOING_CALL_RINGING: 1498 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1499 if (!hfp_connection){ 1500 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1501 break; 1502 } 1503 1504 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1505 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1506 hfp_ag_set_callsetup_indicator(); 1507 hfp_ag_transfer_callsetup_state(); 1508 break; 1509 1510 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1511 // get outgoing call 1512 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1513 if (!hfp_connection){ 1514 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1515 } 1516 if (!hfp_connection){ 1517 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1518 break; 1519 } 1520 1521 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1522 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1523 hfp_connection->call_state = HFP_CALL_ACTIVE; 1524 hfp_ag_set_callsetup_indicator(); 1525 hfp_ag_set_call_indicator(); 1526 hfp_ag_transfer_call_state(); 1527 hfp_ag_transfer_callsetup_state(); 1528 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1529 hfp_ag_set_callheld_indicator(); 1530 hfp_ag_transfer_callheld_state(); 1531 } 1532 break; 1533 } 1534 1535 case HFP_AG_CALL_HOLD_USER_BUSY: 1536 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1537 hfp_ag_set_callsetup_indicator(); 1538 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1539 hfp_connection->call_state = HFP_CALL_ACTIVE; 1540 log_info("AG: Call Waiting, User Busy"); 1541 break; 1542 1543 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1544 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1545 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1546 1547 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1548 if (call_held || call_setup_in_progress){ 1549 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1550 1551 } 1552 1553 if (call_setup_in_progress){ 1554 log_info("AG: Call Dropped, Accept new call"); 1555 hfp_ag_set_callsetup_indicator(); 1556 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1557 } else { 1558 log_info("AG: Call Dropped, Resume held call"); 1559 } 1560 if (call_held){ 1561 hfp_ag_set_callheld_indicator(); 1562 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1563 } 1564 1565 hfp_connection->call_state = HFP_CALL_ACTIVE; 1566 break; 1567 } 1568 1569 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1570 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1571 // only update if callsetup changed 1572 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1573 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1574 1575 if (call_setup_in_progress){ 1576 log_info("AG: Call on Hold, Accept new call"); 1577 hfp_ag_set_callsetup_indicator(); 1578 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1579 } else { 1580 log_info("AG: Swap calls"); 1581 } 1582 1583 hfp_ag_set_callheld_indicator(); 1584 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1585 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1586 hfp_connection->call_state = HFP_CALL_ACTIVE; 1587 break; 1588 } 1589 1590 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1591 // Adds a held call to the conversation. 1592 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1593 log_info("AG: Join 3-way-call"); 1594 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1595 hfp_ag_set_callheld_indicator(); 1596 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1597 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1598 } 1599 hfp_connection->call_state = HFP_CALL_ACTIVE; 1600 break; 1601 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1602 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1603 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1604 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1605 hfp_ag_set_call_indicator(); 1606 hfp_ag_set_callheld_indicator(); 1607 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1608 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1609 hfp_connection->call_state = HFP_CALL_IDLE; 1610 break; 1611 1612 default: 1613 break; 1614 } 1615 1616 1617 } 1618 1619 1620 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1621 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1622 if (!active_call) return; 1623 1624 int idx = active_call->index; 1625 hfp_enhanced_call_dir_t dir = active_call->direction; 1626 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1627 hfp_enhanced_call_mode_t mode = active_call->mode; 1628 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1629 uint8_t type = active_call->clip_type; 1630 char * number = active_call->clip_number; 1631 1632 char buffer[100]; 1633 // TODO: check length of a buffer, to fit the MTU 1634 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1635 if (number){ 1636 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ", \"%s\",%u", number, type); 1637 } 1638 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1639 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, 1640 mode, mpty, type, number); 1641 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1642 } 1643 1644 static void hfp_run_for_context(hfp_connection_t *hfp_connection){ 1645 1646 // log_info("hfp_run_for_context %p", hfp_connection); 1647 1648 if (!hfp_connection) return; 1649 1650 if (!hfp_connection->rfcomm_cid) return; 1651 1652 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1653 log_info("hfp_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1654 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1655 return; 1656 } 1657 1658 if (hfp_connection->send_status_of_current_calls){ 1659 hfp_connection->ok_pending = 0; 1660 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1661 hfp_connection->next_call_index++; 1662 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1663 } else { 1664 hfp_connection->next_call_index = 0; 1665 hfp_connection->ok_pending = 1; 1666 hfp_connection->send_status_of_current_calls = 0; 1667 } 1668 return; 1669 } 1670 1671 if (hfp_connection->ag_notify_incoming_call_waiting){ 1672 hfp_connection->ag_notify_incoming_call_waiting = 0; 1673 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1674 return; 1675 } 1676 1677 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1678 hfp_connection->ok_pending = 0; 1679 hfp_connection->send_error = 0; 1680 hfp_connection->command = HFP_CMD_NONE; 1681 hfp_ag_error(hfp_connection->rfcomm_cid); 1682 return; 1683 } 1684 1685 if (hfp_connection->send_error){ 1686 hfp_connection->send_error = 0; 1687 hfp_connection->command = HFP_CMD_NONE; 1688 hfp_ag_error(hfp_connection->rfcomm_cid); 1689 return; 1690 } 1691 1692 // note: before update AG indicators and ok_pending 1693 if (hfp_connection->send_response_and_hold_status){ 1694 int status = hfp_connection->send_response_and_hold_status - 1; 1695 hfp_connection->send_response_and_hold_status = 0; 1696 hfp_ag_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1697 return; 1698 } 1699 1700 if (hfp_connection->ok_pending){ 1701 hfp_connection->ok_pending = 0; 1702 hfp_connection->command = HFP_CMD_NONE; 1703 hfp_ag_ok(hfp_connection->rfcomm_cid); 1704 return; 1705 } 1706 1707 // update AG indicators 1708 if (hfp_connection->ag_indicators_status_update_bitmap){ 1709 int i; 1710 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1711 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1712 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1713 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1714 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1715 break; 1716 } 1717 hfp_ag_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1718 return; 1719 } 1720 } 1721 } 1722 1723 if (hfp_connection->ag_ring){ 1724 hfp_connection->ag_ring = 0; 1725 hfp_connection->command = HFP_CMD_NONE; 1726 hfp_ag_ring(hfp_connection->rfcomm_cid); 1727 return; 1728 } 1729 1730 if (hfp_connection->ag_send_clip){ 1731 hfp_connection->ag_send_clip = 0; 1732 hfp_connection->command = HFP_CMD_NONE; 1733 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1734 return; 1735 } 1736 1737 if (hfp_connection->send_phone_number_for_voice_tag){ 1738 hfp_connection->send_phone_number_for_voice_tag = 0; 1739 hfp_connection->command = HFP_CMD_NONE; 1740 hfp_connection->ok_pending = 1; 1741 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1742 return; 1743 } 1744 1745 if (hfp_connection->send_subscriber_number){ 1746 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1747 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1748 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1749 } else { 1750 hfp_connection->send_subscriber_number = 0; 1751 hfp_connection->next_subscriber_number_to_send = 0; 1752 hfp_ag_ok(hfp_connection->rfcomm_cid); 1753 } 1754 hfp_connection->command = HFP_CMD_NONE; 1755 } 1756 1757 if (hfp_connection->send_microphone_gain){ 1758 hfp_connection->send_microphone_gain = 0; 1759 hfp_connection->command = HFP_CMD_NONE; 1760 hfp_ag_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1761 return; 1762 } 1763 1764 if (hfp_connection->send_speaker_gain){ 1765 hfp_connection->send_speaker_gain = 0; 1766 hfp_connection->command = HFP_CMD_NONE; 1767 hfp_ag_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1768 return; 1769 } 1770 1771 if (hfp_connection->send_ag_status_indicators){ 1772 hfp_connection->send_ag_status_indicators = 0; 1773 hfp_ag_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1774 return; 1775 } 1776 1777 int done = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1778 if (!done){ 1779 done = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1780 } 1781 1782 if (!done){ 1783 done = call_setup_state_machine(hfp_connection); 1784 } 1785 1786 if (!done){ 1787 done = hfp_ag_run_for_audio_connection(hfp_connection); 1788 } 1789 1790 if (hfp_connection->command == HFP_CMD_NONE && !done){ 1791 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1792 switch(hfp_connection->state){ 1793 case HFP_W2_DISCONNECT_RFCOMM: 1794 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1795 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1796 break; 1797 default: 1798 break; 1799 } 1800 } 1801 if (done){ 1802 hfp_connection->command = HFP_CMD_NONE; 1803 } 1804 // 1805 if (done) { 1806 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1807 } 1808 } 1809 1810 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1811 int i; 1812 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1813 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1814 if (indicator->uuid == number){ 1815 return indicator; 1816 } 1817 } 1818 return NULL; 1819 } 1820 1821 static void hfp_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1822 UNUSED(packet_type); 1823 1824 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1825 if (!hfp_connection) return; 1826 1827 char last_char = packet[size-1]; 1828 packet[size-1] = 0; 1829 log_info("HFP_RX %s", packet); 1830 packet[size-1] = last_char; 1831 1832 int pos; 1833 for (pos = 0; pos < size ; pos++){ 1834 hfp_parse(hfp_connection, packet[pos], 0); 1835 } 1836 hfp_generic_status_indicator_t * indicator; 1837 int value; 1838 switch(hfp_connection->command){ 1839 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1840 if (hfp_ag_response_and_hold_active){ 1841 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1842 } 1843 hfp_connection->ok_pending = 1; 1844 break; 1845 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1846 value = btstack_atoi((char *)&hfp_connection->line_buffer[0]); 1847 log_info("HF Response and Hold: %u", value); 1848 switch(value){ 1849 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1850 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1851 break; 1852 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1853 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1854 break; 1855 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1856 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1857 break; 1858 default: 1859 break; 1860 } 1861 hfp_connection->ok_pending = 1; 1862 break; 1863 case HFP_CMD_HF_INDICATOR_STATUS: 1864 hfp_connection->command = HFP_CMD_NONE; 1865 // find indicator by assigned number 1866 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1867 if (!indicator){ 1868 hfp_connection->send_error = 1; 1869 break; 1870 } 1871 value = btstack_atoi((char *)&hfp_connection->line_buffer[0]); 1872 switch (indicator->uuid){ 1873 case 1: // enhanced security 1874 if (value > 1) { 1875 hfp_connection->send_error = 1; 1876 return; 1877 } 1878 log_info("HF Indicator 'enhanced security' set to %u", value); 1879 break; 1880 case 2: // battery level 1881 if (value > 100){ 1882 hfp_connection->send_error = 1; 1883 return; 1884 } 1885 log_info("HF Indicator 'battery' set to %u", value); 1886 break; 1887 default: 1888 log_info("HF Indicator unknown set to %u", value); 1889 break; 1890 } 1891 hfp_connection->ok_pending = 1; 1892 break; 1893 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1894 // expected by SLC state machine 1895 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1896 hfp_connection->send_ag_indicators_segment = 0; 1897 hfp_connection->send_ag_status_indicators = 1; 1898 break; 1899 case HFP_CMD_LIST_CURRENT_CALLS: 1900 hfp_connection->command = HFP_CMD_NONE; 1901 hfp_connection->next_call_index = 0; 1902 hfp_connection->send_status_of_current_calls = 1; 1903 break; 1904 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1905 if (subscriber_numbers_count == 0){ 1906 hfp_ag_ok(hfp_connection->rfcomm_cid); 1907 break; 1908 } 1909 hfp_connection->next_subscriber_number_to_send = 0; 1910 hfp_connection->send_subscriber_number = 1; 1911 break; 1912 case HFP_CMD_TRANSMIT_DTMF_CODES: 1913 hfp_connection->command = HFP_CMD_NONE; 1914 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &hfp_connection->line_buffer[0]); 1915 break; 1916 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1917 hfp_connection->command = HFP_CMD_NONE; 1918 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1919 break; 1920 case HFP_CMD_TURN_OFF_EC_AND_NR: 1921 hfp_connection->command = HFP_CMD_NONE; 1922 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1923 hfp_connection->ok_pending = 1; 1924 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1925 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1926 } else { 1927 hfp_connection->send_error = 1; 1928 } 1929 break; 1930 case HFP_CMD_CALL_ANSWERED: 1931 hfp_connection->command = HFP_CMD_NONE; 1932 log_info("HFP: ATA"); 1933 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1934 break; 1935 case HFP_CMD_HANG_UP_CALL: 1936 hfp_connection->command = HFP_CMD_NONE; 1937 hfp_connection->ok_pending = 1; 1938 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1939 break; 1940 case HFP_CMD_CALL_HOLD: { 1941 // TODO: fully implement this 1942 log_error("HFP: unhandled call hold type %c", hfp_connection->line_buffer[0]); 1943 hfp_connection->command = HFP_CMD_NONE; 1944 hfp_connection->ok_pending = 1; 1945 hfp_connection->call_index = 0; 1946 1947 if (hfp_connection->line_buffer[1] != '\0'){ 1948 hfp_connection->call_index = btstack_atoi((char *)&hfp_connection->line_buffer[1]); 1949 } 1950 1951 switch (hfp_connection->line_buffer[0]){ 1952 case '0': 1953 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1954 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1955 break; 1956 case '1': 1957 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1958 // Where both a held and a waiting call exist, the above procedures shall apply to the 1959 // waiting call (i.e., not to the held call) in conflicting situation. 1960 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1961 break; 1962 case '2': 1963 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1964 // Where both a held and a waiting call exist, the above procedures shall apply to the 1965 // waiting call (i.e., not to the held call) in conflicting situation. 1966 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1967 break; 1968 case '3': 1969 // Adds a held call to the conversation. 1970 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1971 break; 1972 case '4': 1973 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1974 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1975 break; 1976 default: 1977 break; 1978 } 1979 break; 1980 } 1981 case HFP_CMD_CALL_PHONE_NUMBER: 1982 hfp_connection->command = HFP_CMD_NONE; 1983 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1984 break; 1985 case HFP_CMD_REDIAL_LAST_NUMBER: 1986 hfp_connection->command = HFP_CMD_NONE; 1987 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1988 break; 1989 case HFP_CMD_ENABLE_CLIP: 1990 hfp_connection->command = HFP_CMD_NONE; 1991 hfp_connection->clip_enabled = hfp_connection->line_buffer[8] != '0'; 1992 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1993 hfp_connection->ok_pending = 1; 1994 break; 1995 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1996 hfp_connection->command = HFP_CMD_NONE; 1997 hfp_connection->call_waiting_notification_enabled = hfp_connection->line_buffer[8] != '0'; 1998 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1999 hfp_connection->ok_pending = 1; 2000 break; 2001 case HFP_CMD_SET_SPEAKER_GAIN: 2002 hfp_connection->command = HFP_CMD_NONE; 2003 hfp_connection->ok_pending = 1; 2004 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2005 break; 2006 case HFP_CMD_SET_MICROPHONE_GAIN: 2007 hfp_connection->command = HFP_CMD_NONE; 2008 hfp_connection->ok_pending = 1; 2009 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2010 break; 2011 default: 2012 break; 2013 } 2014 } 2015 2016 static void hfp_run(void){ 2017 btstack_linked_list_iterator_t it; 2018 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2019 while (btstack_linked_list_iterator_has_next(&it)){ 2020 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2021 hfp_run_for_context(hfp_connection); 2022 } 2023 } 2024 2025 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2026 switch (packet_type){ 2027 case RFCOMM_DATA_PACKET: 2028 hfp_handle_rfcomm_data(packet_type, channel, packet, size); 2029 break; 2030 case HCI_EVENT_PACKET: 2031 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2032 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2033 hfp_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2034 return; 2035 } 2036 hfp_handle_hci_event(packet_type, channel, packet, size); 2037 break; 2038 default: 2039 break; 2040 } 2041 2042 hfp_run(); 2043 } 2044 2045 2046 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2047 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2048 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2049 return; 2050 } 2051 int i; 2052 hfp_codecs_nr = codecs_nr; 2053 for (i=0; i < codecs_nr; i++){ 2054 hfp_codecs[i] = codecs[i]; 2055 } 2056 } 2057 2058 void hfp_ag_init_supported_features(uint32_t supported_features){ 2059 hfp_supported_features = supported_features; 2060 } 2061 2062 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2063 hfp_ag_indicators_nr = ag_indicators_nr; 2064 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2065 } 2066 2067 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2068 if (hf_indicators_nr > HFP_MAX_NUM_HF_INDICATORS) return; 2069 hfp_generic_status_indicators_nr = hf_indicators_nr; 2070 memcpy(hfp_generic_status_indicators, hf_indicators, hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2071 } 2072 2073 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2074 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2075 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2076 } 2077 2078 2079 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2080 // register for HCI events 2081 hci_event_callback_registration.callback = &packet_handler; 2082 hci_add_event_handler(&hci_event_callback_registration); 2083 2084 rfcomm_register_service(&packet_handler, rfcomm_channel_nr, 0xffff); 2085 2086 hfp_ag_response_and_hold_active = 0; 2087 subscriber_numbers = NULL; 2088 subscriber_numbers_count = 0; 2089 2090 hfp_set_packet_handler_for_rfcomm_connections(&packet_handler); 2091 2092 hfp_gsm_init(); 2093 } 2094 2095 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2096 hfp_establish_service_level_connection(bd_addr, SDP_Handsfree); 2097 } 2098 2099 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2100 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2101 if (!hfp_connection){ 2102 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2103 return; 2104 } 2105 hfp_release_service_level_connection(hfp_connection); 2106 hfp_run_for_context(hfp_connection); 2107 } 2108 2109 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2110 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2111 if (!hfp_connection){ 2112 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2113 return; 2114 } 2115 hfp_connection->extended_audio_gateway_error = 0; 2116 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2117 return; 2118 } 2119 hfp_connection->extended_audio_gateway_error = error; 2120 hfp_run_for_context(hfp_connection); 2121 } 2122 2123 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2124 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2125 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2126 2127 hfp_connection->establish_audio_connection = 1; 2128 2129 if (!has_codec_negotiation_feature(hfp_connection)){ 2130 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2131 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2132 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2133 // now, pick link settings 2134 hfp_init_link_settings(hfp_connection); 2135 } 2136 2137 switch (hfp_connection->codecs_state){ 2138 case HFP_CODECS_IDLE: 2139 case HFP_CODECS_RECEIVED_LIST: 2140 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 2141 case HFP_CODECS_ERROR: 2142 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 2143 break; 2144 default: 2145 break; 2146 } 2147 } 2148 2149 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2150 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2151 if (!hfp_connection){ 2152 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2153 return; 2154 } 2155 hfp_connection->establish_audio_connection = 0; 2156 hfp_ag_setup_audio_connection(hfp_connection); 2157 hfp_run_for_context(hfp_connection); 2158 } 2159 2160 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2161 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2162 if (!hfp_connection){ 2163 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2164 return; 2165 } 2166 hfp_release_audio_connection(hfp_connection); 2167 hfp_run_for_context(hfp_connection); 2168 } 2169 2170 /** 2171 * @brief Enable in-band ring tone 2172 */ 2173 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2174 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2175 return; 2176 } 2177 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2178 2179 btstack_linked_list_iterator_t it; 2180 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2181 while (btstack_linked_list_iterator_has_next(&it)){ 2182 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2183 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2184 hfp_run_for_context(hfp_connection); 2185 } 2186 } 2187 2188 /** 2189 * @brief Called from GSM 2190 */ 2191 void hfp_ag_incoming_call(void){ 2192 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2193 } 2194 2195 /** 2196 * @brief number is stored. 2197 */ 2198 void hfp_ag_set_clip(uint8_t type, const char * number){ 2199 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2200 } 2201 2202 void hfp_ag_call_dropped(void){ 2203 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2204 } 2205 2206 // call from AG UI 2207 void hfp_ag_answer_incoming_call(void){ 2208 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2209 } 2210 2211 void hfp_ag_join_held_call(void){ 2212 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2213 } 2214 2215 void hfp_ag_terminate_call(void){ 2216 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2217 } 2218 2219 void hfp_ag_outgoing_call_ringing(void){ 2220 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2221 } 2222 2223 void hfp_ag_outgoing_call_established(void){ 2224 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2225 } 2226 2227 void hfp_ag_outgoing_call_rejected(void){ 2228 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2229 } 2230 2231 void hfp_ag_outgoing_call_accepted(void){ 2232 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2233 } 2234 2235 void hfp_ag_hold_incoming_call(void){ 2236 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2237 } 2238 2239 void hfp_ag_accept_held_incoming_call(void) { 2240 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2241 } 2242 2243 void hfp_ag_reject_held_incoming_call(void){ 2244 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2245 } 2246 2247 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2248 int indicator_index = get_ag_indicator_index_for_name(name); 2249 if (indicator_index < 0) return; 2250 hfp_ag_indicators[indicator_index].status = value; 2251 2252 2253 btstack_linked_list_iterator_t it; 2254 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2255 while (btstack_linked_list_iterator_has_next(&it)){ 2256 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2257 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2258 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2259 continue; 2260 } 2261 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2262 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2263 hfp_run_for_context(hfp_connection); 2264 } 2265 } 2266 2267 void hfp_ag_set_registration_status(int status){ 2268 hfp_ag_set_ag_indicator("service", status); 2269 } 2270 2271 void hfp_ag_set_signal_strength(int strength){ 2272 hfp_ag_set_ag_indicator("signal", strength); 2273 } 2274 2275 void hfp_ag_set_roaming_status(int status){ 2276 hfp_ag_set_ag_indicator("roam", status); 2277 } 2278 2279 void hfp_ag_set_battery_level(int level){ 2280 hfp_ag_set_ag_indicator("battchg", level); 2281 } 2282 2283 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2284 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2285 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2286 if (!hfp_connection){ 2287 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2288 return; 2289 } 2290 2291 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2292 log_info("AG cannot acivate voice recognition - not supported by HF"); 2293 return; 2294 } 2295 2296 if (activate){ 2297 hfp_ag_establish_audio_connection(acl_handle); 2298 } 2299 2300 hfp_connection->ag_activate_voice_recognition = activate; 2301 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2302 hfp_run_for_context(hfp_connection); 2303 } 2304 2305 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2306 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2307 if (!hfp_connection){ 2308 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2309 return; 2310 } 2311 if (hfp_connection->microphone_gain != gain){ 2312 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2313 hfp_connection->microphone_gain = gain; 2314 hfp_connection->send_microphone_gain = 1; 2315 } 2316 hfp_run_for_context(hfp_connection); 2317 } 2318 2319 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2320 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2321 if (!hfp_connection){ 2322 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2323 return; 2324 } 2325 if (hfp_connection->speaker_gain != gain){ 2326 hfp_connection->speaker_gain = gain; 2327 hfp_connection->send_speaker_gain = 1; 2328 } 2329 hfp_run_for_context(hfp_connection); 2330 } 2331 2332 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2333 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2334 if (!hfp_connection){ 2335 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2336 return; 2337 } 2338 hfp_ag_set_clip(0, number); 2339 hfp_connection->send_phone_number_for_voice_tag = 1; 2340 } 2341 2342 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2343 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2344 if (!hfp_connection){ 2345 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2346 return; 2347 } 2348 hfp_connection->send_error = 1; 2349 } 2350 2351 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2352 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2353 if (!hfp_connection){ 2354 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2355 return; 2356 } 2357 hfp_connection->ok_pending = 1; 2358 } 2359 2360 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2361 subscriber_numbers = numbers; 2362 subscriber_numbers_count = numbers_count; 2363 } 2364 2365 void hfp_ag_clear_last_dialed_number(void){ 2366 hfp_gsm_clear_last_dialed_number(); 2367 } 2368 2369 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2370 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2371 if (!hfp_connection){ 2372 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2373 return; 2374 } 2375 if (!hfp_connection->call_waiting_notification_enabled) return; 2376 2377 hfp_connection->ag_notify_incoming_call_waiting = 1; 2378 hfp_run_for_context(hfp_connection); 2379 } 2380 2381