1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define __BTSTACK_FILE__ "hfp_ag.c" 39 40 // ***************************************************************************** 41 // 42 // HFP Audio Gateway (AG) unit 43 // 44 // ***************************************************************************** 45 46 #include "btstack_config.h" 47 48 #include <stdint.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 53 #include "hci_cmd.h" 54 #include "btstack_run_loop.h" 55 56 #include "bluetooth_sdp.h" 57 #include "hci.h" 58 #include "btstack_memory.h" 59 #include "hci_dump.h" 60 #include "l2cap.h" 61 #include "btstack_debug.h" 62 #include "btstack_event.h" 63 #include "classic/core.h" 64 #include "classic/hfp.h" 65 #include "classic/hfp_ag.h" 66 #include "classic/hfp_gsm_model.h" 67 #include "classic/sdp_client_rfcomm.h" 68 #include "classic/sdp_server.h" 69 #include "classic/sdp_util.h" 70 71 // private prototypes 72 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 73 static void hfp_run_for_context(hfp_connection_t *hfp_connection); 74 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection); 75 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 76 77 // public prototypes 78 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 79 int get_hfp_generic_status_indicators_nr(void); 80 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 81 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 82 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 83 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 84 85 // gobals 86 static const char default_hfp_ag_service_name[] = "Voice gateway"; 87 88 static uint16_t hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 89 90 static uint8_t hfp_codecs_nr = 0; 91 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 92 93 static int hfp_ag_indicators_nr = 0; 94 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_AG_INDICATORS]; 95 96 static int hfp_generic_status_indicators_nr = 0; 97 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_HF_INDICATORS]; 98 99 static int hfp_ag_call_hold_services_nr = 0; 100 static char *hfp_ag_call_hold_services[6]; 101 static btstack_packet_handler_t hfp_callback; 102 103 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 104 static int hfp_ag_response_and_hold_active = 0; 105 106 // Subcriber information entries 107 static hfp_phone_number_t * subscriber_numbers = NULL; 108 static int subscriber_numbers_count = 0; 109 110 static btstack_packet_callback_registration_t hci_event_callback_registration; 111 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection); 112 113 114 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 115 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 116 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 117 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 118 } 119 return hfp_connection->ag_indicators_nr; 120 } 121 122 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 123 // TODO: save only value, and value changed in the hfp_connection? 124 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 125 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 126 memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 127 } 128 return (hfp_ag_indicator_t *)&(hfp_connection->ag_indicators); 129 } 130 131 static hfp_ag_indicator_t * get_ag_indicator_for_name(const char * name){ 132 int i; 133 for (i = 0; i < hfp_ag_indicators_nr; i++){ 134 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 135 return &hfp_ag_indicators[i]; 136 } 137 } 138 return NULL; 139 } 140 141 static int get_ag_indicator_index_for_name(const char * name){ 142 int i; 143 for (i = 0; i < hfp_ag_indicators_nr; i++){ 144 if (strcmp(hfp_ag_indicators[i].name, name) == 0){ 145 return i; 146 } 147 } 148 return -1; 149 } 150 151 152 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 153 if (callback == NULL){ 154 log_error("hfp_ag_register_packet_handler called with NULL callback"); 155 return; 156 } 157 hfp_callback = callback; 158 hfp_set_callback(callback); 159 } 160 161 static int use_in_band_tone(void){ 162 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 163 } 164 165 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 166 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 167 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 168 return hf && ag; 169 } 170 171 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 172 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 173 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 174 return hf && ag; 175 } 176 177 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 178 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 179 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 180 return hf && ag; 181 } 182 183 void hfp_ag_create_sdp_record(uint8_t * service, uint32_t service_record_handle, int rfcomm_channel_nr, const char * name, uint8_t ability_to_reject_call, uint16_t supported_features, int wide_band_speech){ 184 if (!name){ 185 name = default_hfp_ag_service_name; 186 } 187 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 188 189 /* 190 * 0x01 – Ability to reject a call 191 * 0x00 – No ability to reject a call 192 */ 193 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 194 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 195 196 // Construct SupportedFeatures for SDP bitmap: 197 // 198 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 199 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 200 // 201 uint16_t sdp_features = supported_features &0x1f; 202 if (supported_features & wide_band_speech){ 203 sdp_features |= 1 << 5; // Wide band speech bit 204 } 205 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 206 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 207 } 208 209 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 210 char buffer[20]; 211 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 212 return send_str_over_rfcomm(cid, buffer); 213 } 214 215 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 216 char buffer[40]; 217 sprintf(buffer, "\r\n%s:%d\r\n\r\nOK\r\n", HFP_SUPPORTED_FEATURES, hfp_supported_features); 218 return send_str_over_rfcomm(cid, buffer); 219 } 220 221 static int hfp_ag_send_ok(uint16_t cid){ 222 char buffer[10]; 223 sprintf(buffer, "\r\nOK\r\n"); 224 return send_str_over_rfcomm(cid, buffer); 225 } 226 227 static int hfp_ag_send_ring(uint16_t cid){ 228 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 229 } 230 231 static int hfp_ag_send_clip(uint16_t cid){ 232 char buffer[50]; 233 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 234 return send_str_over_rfcomm(cid, buffer); 235 } 236 237 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 238 char buffer[50]; 239 sprintf(buffer, "\r\n%s: ,\"%s\",%u, , \r\n", HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 240 return send_str_over_rfcomm(cid, buffer); 241 } 242 243 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 244 char buffer[50]; 245 sprintf(buffer, "\r\n%s: %s\r\n", HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 246 return send_str_over_rfcomm(cid, buffer); 247 } 248 249 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 250 char buffer[50]; 251 sprintf(buffer, "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), hfp_gsm_clip_type()); 252 return send_str_over_rfcomm(cid, buffer); 253 } 254 255 static int hfp_ag_send_error(uint16_t cid){ 256 char buffer[10]; 257 sprintf(buffer, "\r\nERROR\r\n"); 258 return send_str_over_rfcomm(cid, buffer); 259 } 260 261 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 262 char buffer[20]; 263 sprintf(buffer, "\r\n%s=%d\r\n", HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 264 return send_str_over_rfcomm(cid, buffer); 265 } 266 267 // fast & small implementation for fixed int size 268 static int string_len_for_uint32(uint32_t i){ 269 if (i < 10) return 1; 270 if (i < 100) return 2; 271 if (i < 1000) return 3; 272 if (i < 10000) return 4; 273 if (i < 100000) return 5; 274 if (i < 1000000) return 6; 275 if (i < 10000000) return 7; 276 if (i < 100000000) return 8; 277 if (i < 1000000000) return 9; 278 return 10; 279 } 280 281 // get size for indicator string 282 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 283 // template: ("$NAME",($MIN,$MAX)) 284 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 285 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 286 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 287 } 288 289 // store indicator 290 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer){ 291 sprintf((char *) buffer, "(\"%s\",(%d,%d)),", 292 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 293 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 294 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 295 } 296 297 // structure: header [indicator [comma indicator]] footer 298 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 299 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 300 if (!num_indicators) return 2; 301 return 3 + (num_indicators-1) * 2; 302 } 303 304 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 305 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 306 if (index == 0) { 307 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 308 } 309 index--; 310 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 311 int indicator_index = index >> 1; 312 if ((index & 1) == 0){ 313 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 314 } 315 if (indicator_index == num_indicators - 1){ 316 return 8; // "\r\n\r\nOK\r\n" 317 } 318 return 1; // comma 319 } 320 321 static void hgp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer){ 322 if (index == 0){ 323 *buffer++ = '\r'; 324 *buffer++ = '\n'; 325 int len = strlen(HFP_INDICATOR); 326 memcpy(buffer, HFP_INDICATOR, len); 327 buffer += len; 328 *buffer++ = ':'; 329 return; 330 } 331 index--; 332 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 333 int indicator_index = index >> 1; 334 if ((index & 1) == 0){ 335 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer); 336 return; 337 } 338 if (indicator_index == num_indicators-1){ 339 memcpy(buffer, "\r\n\r\nOK\r\n", 8); 340 return; 341 } 342 *buffer = ','; 343 } 344 345 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 346 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 347 int i; 348 int offset = 0; 349 for (i = 0; i < hfp_generic_status_indicators_nr-1; i++) { 350 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 351 } 352 if (i < hfp_generic_status_indicators_nr){ 353 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 354 } 355 return offset; 356 } 357 358 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 359 if (buffer_size < hfp_generic_status_indicators_nr * 3) return 0; 360 int i; 361 int offset = 0; 362 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 363 offset += snprintf(buffer+offset, buffer_size-offset, "\r\n%s:%d,%d\r\n", HFP_GENERIC_STATUS_INDICATOR, hfp_generic_status_indicators[i].uuid, hfp_generic_status_indicators[i].state); 364 } 365 return offset; 366 } 367 368 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 369 if (buffer_size < hfp_ag_indicators_nr * 3) return 0; 370 int i; 371 int offset = 0; 372 for (i = 0; i < hfp_ag_indicators_nr-1; i++) { 373 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 374 } 375 if (i<hfp_ag_indicators_nr){ 376 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 377 } 378 return offset; 379 } 380 381 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 382 if (buffer_size < hfp_ag_call_hold_services_nr * 3) return 0; 383 int i; 384 int offset = snprintf(buffer, buffer_size, "("); 385 for (i = 0; i < hfp_ag_call_hold_services_nr-1; i++) { 386 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 387 } 388 if (i<hfp_ag_call_hold_services_nr){ 389 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 390 } 391 return offset; 392 } 393 394 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 395 int start_segment, int num_segments, 396 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 397 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer)){ 398 399 // assumes: can send now == true 400 // assumes: num segments > 0 401 // assumes: individual segments are smaller than MTU 402 rfcomm_reserve_packet_buffer(); 403 int mtu = rfcomm_get_max_frame_size(cid); 404 uint8_t * data = rfcomm_get_outgoing_buffer(); 405 int offset = 0; 406 int segment = start_segment; 407 while (segment < num_segments){ 408 int segment_len = get_segment_len(hfp_connection, segment); 409 if (offset + segment_len > mtu) break; 410 // append segement 411 store_segment(hfp_connection, segment, data+offset); 412 offset += segment_len; 413 segment++; 414 } 415 rfcomm_send_prepared(cid, offset); 416 return segment; 417 } 418 419 // returns next segment to store 420 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 421 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 422 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 423 hfp_ag_indicators_cmd_generator_get_segment_len, hgp_ag_indicators_cmd_generator_store_segment); 424 } 425 426 static int hfp_ag_send_retrieve_indicators_status_cmd(uint16_t cid){ 427 char buffer[40]; 428 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_INDICATOR); 429 offset += hfp_ag_indicators_status_join(buffer+offset, sizeof(buffer)-offset); 430 431 buffer[offset] = 0; 432 433 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 434 buffer[offset] = 0; 435 return send_str_over_rfcomm(cid, buffer); 436 } 437 438 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 439 char buffer[40]; 440 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 441 offset += hfp_ag_call_services_join(buffer+offset, sizeof(buffer)-offset); 442 443 buffer[offset] = 0; 444 445 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 446 buffer[offset] = 0; 447 return send_str_over_rfcomm(cid, buffer); 448 } 449 450 451 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 452 return hfp_ag_send_ok(cid); 453 } 454 455 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 456 char buffer[40]; 457 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 458 offset += hfp_hf_indicators_join(buffer+offset, sizeof(buffer)-offset); 459 460 buffer[offset] = 0; 461 462 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ")\r\n\r\nOK\r\n"); 463 buffer[offset] = 0; 464 return send_str_over_rfcomm(cid, buffer); 465 } 466 467 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 468 char buffer[40]; 469 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer)); 470 471 buffer[offset] = 0; 472 offset += snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 473 buffer[offset] = 0; 474 return send_str_over_rfcomm(cid, buffer); 475 } 476 477 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 478 char buffer[20]; 479 sprintf(buffer, "\r\n%s:%d,%d\r\n", HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, indicator->status); 480 return send_str_over_rfcomm(cid, buffer); 481 } 482 483 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 484 char buffer[40]; 485 if (strlen(op.name) == 0){ 486 sprintf(buffer, "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 487 } else { 488 sprintf(buffer, "\r\n%s:%d,%d,%s\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format, op.name); 489 } 490 return send_str_over_rfcomm(cid, buffer); 491 } 492 493 494 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 495 char buffer[30]; 496 sprintf(buffer, "\r\n%s:%d\r\n", HFP_CONFIRM_COMMON_CODEC, codec); 497 return send_str_over_rfcomm(cid, buffer); 498 } 499 500 static int hfp_ag_send_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 501 char buffer[30]; 502 sprintf(buffer, "\r\n%s: %d\r\n", HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 503 return send_str_over_rfcomm(cid, buffer); 504 } 505 506 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 507 char buffer[30]; 508 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_SPEAKER_GAIN, gain); 509 return send_str_over_rfcomm(cid, buffer); 510 } 511 512 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 513 char buffer[30]; 514 sprintf(buffer, "\r\n%s:%d\r\n", HFP_SET_MICROPHONE_GAIN, gain); 515 return send_str_over_rfcomm(cid, buffer); 516 } 517 518 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 519 char buffer[30]; 520 sprintf(buffer, "\r\n%s: %d\r\n", HFP_RESPONSE_AND_HOLD, state); 521 return send_str_over_rfcomm(cid, buffer); 522 } 523 524 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 525 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 526 527 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 528 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 529 return HFP_CODEC_MSBC; 530 } 531 } 532 return HFP_CODEC_CVSD; 533 } 534 535 static void hfp_init_link_settings(hfp_connection_t * hfp_connection){ 536 // determine highest possible link setting 537 hfp_connection->link_setting = HFP_LINK_SETTINGS_D1; 538 // anything else requires eSCO support on both sides 539 if (hci_extended_sco_link_supported() && hci_remote_esco_supported(hfp_connection->acl_handle)){ 540 switch (hfp_connection->negotiated_codec){ 541 case HFP_CODEC_CVSD: 542 hfp_connection->link_setting = HFP_LINK_SETTINGS_S3; 543 if ((hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) 544 && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4))){ 545 hfp_connection->link_setting = HFP_LINK_SETTINGS_S4; 546 } 547 break; 548 case HFP_CODEC_MSBC: 549 hfp_connection->link_setting = HFP_LINK_SETTINGS_T2; 550 break; 551 default: 552 break; 553 } 554 } 555 log_info("hfp_init_link_settings: %u", hfp_connection->link_setting); 556 } 557 558 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 559 /* events ( == commands): 560 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 561 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 562 hf_trigger_codec_connection_setup == received BCC 563 ag_trigger_codec_connection_setup == received from AG to send BCS 564 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 565 */ 566 567 switch (hfp_connection->codecs_state){ 568 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 569 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 570 break; 571 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 572 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 573 break; 574 default: 575 break; 576 } 577 578 // printf(" -> State machine: CC\n"); 579 580 switch (hfp_connection->command){ 581 case HFP_CMD_AVAILABLE_CODECS: 582 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 583 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 584 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 585 return 1; 586 } 587 588 switch (hfp_connection->codecs_state){ 589 case HFP_CODECS_AG_SENT_COMMON_CODEC: 590 case HFP_CODECS_EXCHANGED: 591 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 592 break; 593 default: 594 break; 595 } 596 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 597 return 1; 598 599 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 600 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 601 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 602 return 1; 603 604 case HFP_CMD_AG_SEND_COMMON_CODEC: 605 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 606 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 607 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 608 return 1; 609 610 case HFP_CMD_HF_CONFIRMED_CODEC: 611 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 612 hfp_connection->codecs_state = HFP_CODECS_ERROR; 613 hfp_ag_send_error(hfp_connection->rfcomm_cid); 614 return 1; 615 } 616 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 617 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 618 log_info("hfp: codec confirmed: %s", hfp_connection->negotiated_codec == HFP_CODEC_MSBC ? "mSBC" : "CVSD"); 619 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 620 // now, pick link settings 621 hfp_init_link_settings(hfp_connection); 622 return 1; 623 default: 624 break; 625 } 626 return 0; 627 } 628 629 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 630 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 631 hfp_emit_slc_connection_event(hfp_callback, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 632 633 // if active call exist, set per-hfp_connection state active, too (when audio is on) 634 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 635 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 636 } 637 // if AG is ringing, also start ringing on the HF 638 if (hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS && 639 hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 640 hfp_ag_hf_start_ringing(hfp_connection); 641 } 642 } 643 644 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 645 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 646 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 647 int sent = 0; 648 switch(hfp_connection->command){ 649 case HFP_CMD_SUPPORTED_FEATURES: 650 switch(hfp_connection->state){ 651 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 652 case HFP_EXCHANGE_SUPPORTED_FEATURES: 653 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 654 if (has_codec_negotiation_feature(hfp_connection)){ 655 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 656 } else { 657 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 658 } 659 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 660 return 1; 661 default: 662 break; 663 } 664 break; 665 case HFP_CMD_AVAILABLE_CODECS: 666 sent = codecs_exchange_state_machine(hfp_connection); 667 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 668 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 669 } 670 return sent; 671 672 case HFP_CMD_RETRIEVE_AG_INDICATORS: 673 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 674 // HF requested AG Indicators and we did expect it 675 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 676 // continue below in state switch 677 } 678 break; 679 680 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 681 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 682 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 683 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 684 return 1; 685 686 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 687 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 688 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 689 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 690 } else if (has_hf_indicators_feature(hfp_connection)){ 691 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 692 } else { 693 hfp_ag_slc_established(hfp_connection); 694 } 695 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 696 return 1; 697 698 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 699 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 700 if (has_hf_indicators_feature(hfp_connection)){ 701 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 702 } 703 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 704 if (!has_hf_indicators_feature(hfp_connection)){ 705 hfp_ag_slc_established(hfp_connection); 706 } 707 return 1; 708 709 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 710 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 711 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 712 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 713 return 1; 714 715 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 716 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 717 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 718 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 719 return 1; 720 721 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 722 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 723 hfp_ag_slc_established(hfp_connection); 724 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 725 return 1; 726 default: 727 break; 728 } 729 730 switch (hfp_connection->state){ 731 case HFP_RETRIEVE_INDICATORS: { 732 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 733 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 734 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 735 if (next_segment < num_segments){ 736 // prepare sending of next segment 737 hfp_connection->send_ag_indicators_segment = next_segment; 738 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 739 } else { 740 // done, go to next state 741 hfp_connection->send_ag_indicators_segment = 0; 742 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 743 } 744 return 1; 745 } 746 default: 747 break; 748 } 749 return 0; 750 } 751 752 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 753 int sent = codecs_exchange_state_machine(hfp_connection); 754 if (sent) return 1; 755 756 switch(hfp_connection->command){ 757 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 758 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 759 hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 760 return 1; 761 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 762 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 763 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 764 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 765 hfp_ag_setup_audio_connection(hfp_connection); 766 } else { 767 hfp_ag_send_error(hfp_connection->rfcomm_cid); 768 } 769 return 1; 770 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 771 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 772 return 1; 773 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 774 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 775 return 1; 776 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 777 if (hfp_connection->network_operator.format != 0){ 778 hfp_ag_send_error(hfp_connection->rfcomm_cid); 779 } else { 780 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 781 } 782 return 1; 783 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 784 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 785 return 1; 786 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 787 if (hfp_connection->extended_audio_gateway_error){ 788 hfp_connection->extended_audio_gateway_error = 0; 789 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 790 return 1; 791 } 792 break; 793 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 794 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 795 return 1; 796 default: 797 break; 798 } 799 return 0; 800 } 801 802 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 803 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 804 hfp_connection->state > HFP_W2_DISCONNECT_SCO) return 0; 805 806 807 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->release_audio_connection){ 808 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 809 hfp_connection->release_audio_connection = 0; 810 gap_disconnect(hfp_connection->sco_handle); 811 return 1; 812 } 813 814 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 815 816 // run codecs exchange 817 int sent = codecs_exchange_state_machine(hfp_connection); 818 if (sent) return 1; 819 820 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 821 if (hfp_connection->establish_audio_connection){ 822 hfp_connection->state = HFP_W4_SCO_CONNECTED; 823 hfp_connection->establish_audio_connection = 0; 824 hfp_setup_synchronous_connection(hfp_connection); 825 return 1; 826 } 827 return 0; 828 } 829 830 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 831 btstack_linked_list_iterator_t it; 832 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 833 834 while (btstack_linked_list_iterator_has_next(&it)){ 835 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 836 if ( & hfp_connection->hfp_timeout == ts) { 837 return hfp_connection; 838 } 839 } 840 return NULL; 841 } 842 843 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 844 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 845 if (!hfp_connection) return; 846 847 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 848 hfp_connection->ag_ring = 1; 849 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 850 851 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 852 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 853 854 hfp_run_for_context(hfp_connection); 855 } 856 857 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 858 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 859 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 860 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 861 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 862 } 863 864 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 865 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 866 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 867 } 868 869 // 870 // transitition implementations for hfp_ag_call_state_machine 871 // 872 873 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 874 if (use_in_band_tone()){ 875 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 876 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 877 } else { 878 hfp_timeout_start(hfp_connection); 879 hfp_connection->ag_ring = 1; 880 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 881 hfp_connection->call_state = HFP_CALL_RINGING; 882 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 883 } 884 } 885 886 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 887 hfp_connection->ag_ring = 0; 888 hfp_connection->ag_send_clip = 0; 889 hfp_timeout_stop(hfp_connection); 890 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_STOP_RINGINIG); 891 } 892 893 static void hfp_ag_trigger_incoming_call(void){ 894 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 895 if (indicator_index < 0) return; 896 897 btstack_linked_list_iterator_t it; 898 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 899 while (btstack_linked_list_iterator_has_next(&it)){ 900 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 901 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 902 if (hfp_connection->call_state == HFP_CALL_IDLE){ 903 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 904 hfp_ag_hf_start_ringing(hfp_connection); 905 } 906 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 907 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 908 } 909 hfp_run_for_context(hfp_connection); 910 } 911 } 912 913 static void hfp_ag_transfer_callsetup_state(void){ 914 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 915 if (indicator_index < 0) return; 916 917 btstack_linked_list_iterator_t it; 918 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 919 while (btstack_linked_list_iterator_has_next(&it)){ 920 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 921 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 922 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 923 hfp_run_for_context(hfp_connection); 924 } 925 } 926 927 static void hfp_ag_transfer_call_state(void){ 928 int indicator_index = get_ag_indicator_index_for_name("call"); 929 if (indicator_index < 0) return; 930 931 btstack_linked_list_iterator_t it; 932 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 933 while (btstack_linked_list_iterator_has_next(&it)){ 934 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 935 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 936 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 937 hfp_run_for_context(hfp_connection); 938 } 939 } 940 941 static void hfp_ag_transfer_callheld_state(void){ 942 int indicator_index = get_ag_indicator_index_for_name("callheld"); 943 if (indicator_index < 0) return; 944 945 btstack_linked_list_iterator_t it; 946 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 947 while (btstack_linked_list_iterator_has_next(&it)){ 948 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 949 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 950 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 951 hfp_run_for_context(hfp_connection); 952 } 953 } 954 955 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 956 957 int call_indicator_index = get_ag_indicator_index_for_name("call"); 958 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 959 960 btstack_linked_list_iterator_t it; 961 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 962 while (btstack_linked_list_iterator_has_next(&it)){ 963 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 964 if (hfp_connection->call_state != HFP_CALL_RINGING && 965 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 966 967 hfp_ag_hf_stop_ringing(hfp_connection); 968 if (hfp_connection == source){ 969 hfp_connection->ok_pending = 1; 970 971 if (use_in_band_tone()){ 972 hfp_connection->call_state = HFP_CALL_ACTIVE; 973 } else { 974 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 975 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 976 } 977 978 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 979 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 980 981 } else { 982 hfp_connection->call_state = HFP_CALL_IDLE; 983 } 984 hfp_run_for_context(hfp_connection); 985 } 986 } 987 988 static void hfp_ag_ag_accept_call(void){ 989 990 int call_indicator_index = get_ag_indicator_index_for_name("call"); 991 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 992 993 btstack_linked_list_iterator_t it; 994 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 995 while (btstack_linked_list_iterator_has_next(&it)){ 996 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 997 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 998 999 hfp_ag_hf_stop_ringing(hfp_connection); 1000 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 1001 1002 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1003 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1004 1005 hfp_run_for_context(hfp_connection); 1006 break; // only single 1007 } 1008 } 1009 1010 static void hfp_ag_trigger_reject_call(void){ 1011 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1012 btstack_linked_list_iterator_t it; 1013 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1014 while (btstack_linked_list_iterator_has_next(&it)){ 1015 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1016 if (connection->call_state != HFP_CALL_RINGING && 1017 connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1018 hfp_ag_hf_stop_ringing(connection); 1019 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1020 connection->call_state = HFP_CALL_IDLE; 1021 hfp_run_for_context(connection); 1022 } 1023 } 1024 1025 static void hfp_ag_trigger_terminate_call(void){ 1026 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1027 1028 btstack_linked_list_iterator_t it; 1029 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1030 while (btstack_linked_list_iterator_has_next(&it)){ 1031 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1032 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1033 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1034 hfp_connection->call_state = HFP_CALL_IDLE; 1035 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1036 hfp_connection->release_audio_connection = 1; 1037 hfp_run_for_context(hfp_connection); 1038 } 1039 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_TERMINATED); 1040 } 1041 1042 static void hfp_ag_set_callsetup_indicator(void){ 1043 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1044 if (!indicator){ 1045 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1046 return; 1047 }; 1048 indicator->status = hfp_gsm_callsetup_status(); 1049 } 1050 1051 static void hfp_ag_set_callheld_indicator(void){ 1052 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1053 if (!indicator){ 1054 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1055 return; 1056 }; 1057 indicator->status = hfp_gsm_callheld_status(); 1058 } 1059 1060 static void hfp_ag_set_call_indicator(void){ 1061 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1062 if (!indicator){ 1063 log_error("hfp_ag_set_call_state: call indicator is missing"); 1064 return; 1065 }; 1066 indicator->status = hfp_gsm_call_status(); 1067 } 1068 1069 static void hfp_ag_stop_ringing(void){ 1070 btstack_linked_list_iterator_t it; 1071 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1072 while (btstack_linked_list_iterator_has_next(&it)){ 1073 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1074 if (hfp_connection->call_state != HFP_CALL_RINGING && 1075 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1076 hfp_ag_hf_stop_ringing(hfp_connection); 1077 } 1078 } 1079 1080 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1081 btstack_linked_list_iterator_t it; 1082 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1083 while (btstack_linked_list_iterator_has_next(&it)){ 1084 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1085 if (hfp_connection->call_state == call_state) return hfp_connection; 1086 } 1087 return NULL; 1088 } 1089 1090 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1091 btstack_linked_list_iterator_t it; 1092 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1093 while (btstack_linked_list_iterator_has_next(&it)){ 1094 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1095 hfp_connection->send_response_and_hold_status = state + 1; 1096 } 1097 } 1098 1099 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1100 int indicator_index; 1101 switch (hfp_connection->call_state){ 1102 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1103 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1104 // we got event: audio hfp_connection established 1105 hfp_timeout_start(hfp_connection); 1106 hfp_connection->ag_ring = 1; 1107 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1108 hfp_connection->call_state = HFP_CALL_RINGING; 1109 hfp_connection->call_state = HFP_CALL_RINGING; 1110 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_START_RINGINIG); 1111 break; 1112 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1113 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1114 // we got event: audio hfp_connection established 1115 hfp_connection->call_state = HFP_CALL_ACTIVE; 1116 break; 1117 case HFP_CALL_W2_SEND_CALL_WAITING: 1118 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1119 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1120 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1121 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1122 break; 1123 default: 1124 break; 1125 } 1126 return 0; 1127 } 1128 // hfp_connection is used to identify originating HF 1129 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1130 int indicator_index; 1131 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1132 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1133 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1134 1135 //printf("hfp_ag_call_sm event %d \n", event); 1136 switch (event){ 1137 case HFP_AG_INCOMING_CALL: 1138 switch (hfp_gsm_call_status()){ 1139 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1140 switch (hfp_gsm_callsetup_status()){ 1141 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1142 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1143 hfp_ag_set_callsetup_indicator(); 1144 hfp_ag_trigger_incoming_call(); 1145 log_info("AG rings"); 1146 break; 1147 default: 1148 break; 1149 } 1150 break; 1151 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1152 switch (hfp_gsm_callsetup_status()){ 1153 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1154 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1155 hfp_ag_set_callsetup_indicator(); 1156 hfp_ag_trigger_incoming_call(); 1157 log_info("AG call waiting"); 1158 break; 1159 default: 1160 break; 1161 } 1162 break; 1163 } 1164 break; 1165 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1166 switch (hfp_gsm_call_status()){ 1167 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1168 switch (hfp_gsm_callsetup_status()){ 1169 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1170 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1171 hfp_ag_set_call_indicator(); 1172 hfp_ag_set_callsetup_indicator(); 1173 hfp_ag_ag_accept_call(); 1174 log_info("AG answers call, accept call by GSM"); 1175 break; 1176 default: 1177 break; 1178 } 1179 break; 1180 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1181 switch (hfp_gsm_callsetup_status()){ 1182 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1183 log_info("AG: current call is placed on hold, incoming call gets active"); 1184 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1185 hfp_ag_set_callsetup_indicator(); 1186 hfp_ag_set_callheld_indicator(); 1187 hfp_ag_transfer_callsetup_state(); 1188 hfp_ag_transfer_callheld_state(); 1189 break; 1190 default: 1191 break; 1192 } 1193 break; 1194 } 1195 break; 1196 1197 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1198 switch (hfp_gsm_call_status()){ 1199 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1200 switch (hfp_gsm_callheld_status()){ 1201 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1202 log_info("AG: joining held call with active call"); 1203 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1204 hfp_ag_set_callheld_indicator(); 1205 hfp_ag_transfer_callheld_state(); 1206 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1207 break; 1208 default: 1209 break; 1210 } 1211 break; 1212 default: 1213 break; 1214 } 1215 break; 1216 1217 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1218 switch (hfp_gsm_call_status()){ 1219 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1220 switch (hfp_gsm_callsetup_status()){ 1221 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1222 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1223 hfp_ag_set_callsetup_indicator(); 1224 hfp_ag_set_call_indicator(); 1225 hfp_ag_hf_accept_call(hfp_connection); 1226 log_info("HF answers call, accept call by GSM"); 1227 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CALL_ANSWERED); 1228 break; 1229 default: 1230 break; 1231 } 1232 break; 1233 default: 1234 break; 1235 } 1236 break; 1237 1238 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1239 switch (hfp_gsm_call_status()){ 1240 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1241 switch (hfp_gsm_callsetup_status()){ 1242 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1243 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1244 hfp_ag_response_and_hold_active = 1; 1245 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1246 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1247 // as with regualr call 1248 hfp_ag_set_call_indicator(); 1249 hfp_ag_set_callsetup_indicator(); 1250 hfp_ag_ag_accept_call(); 1251 log_info("AG response and hold - hold by AG"); 1252 break; 1253 default: 1254 break; 1255 } 1256 break; 1257 default: 1258 break; 1259 } 1260 break; 1261 1262 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1263 switch (hfp_gsm_call_status()){ 1264 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1265 switch (hfp_gsm_callsetup_status()){ 1266 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1267 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1268 hfp_ag_response_and_hold_active = 1; 1269 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1270 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1271 // as with regualr call 1272 hfp_ag_set_call_indicator(); 1273 hfp_ag_set_callsetup_indicator(); 1274 hfp_ag_hf_accept_call(hfp_connection); 1275 log_info("AG response and hold - hold by HF"); 1276 break; 1277 default: 1278 break; 1279 } 1280 break; 1281 default: 1282 break; 1283 } 1284 break; 1285 1286 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1287 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1288 if (!hfp_ag_response_and_hold_active) break; 1289 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1290 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1291 hfp_ag_response_and_hold_active = 0; 1292 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1293 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1294 log_info("Held Call accepted and active"); 1295 break; 1296 1297 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1298 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1299 if (!hfp_ag_response_and_hold_active) break; 1300 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1301 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1302 hfp_ag_response_and_hold_active = 0; 1303 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1304 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1305 // from terminate by ag 1306 hfp_ag_set_call_indicator(); 1307 hfp_ag_trigger_terminate_call(); 1308 break; 1309 1310 case HFP_AG_TERMINATE_CALL_BY_HF: 1311 switch (hfp_gsm_call_status()){ 1312 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1313 switch (hfp_gsm_callsetup_status()){ 1314 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1315 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1316 hfp_ag_set_callsetup_indicator(); 1317 hfp_ag_transfer_callsetup_state(); 1318 hfp_ag_trigger_reject_call(); 1319 log_info("HF Rejected Incoming call, AG terminate call"); 1320 break; 1321 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1322 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1323 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1324 hfp_ag_set_callsetup_indicator(); 1325 hfp_ag_transfer_callsetup_state(); 1326 log_info("AG terminate outgoing call process"); 1327 break; 1328 default: 1329 break; 1330 } 1331 break; 1332 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1333 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1334 hfp_ag_set_call_indicator(); 1335 hfp_ag_transfer_call_state(); 1336 hfp_connection->call_state = HFP_CALL_IDLE; 1337 log_info("AG terminate call"); 1338 break; 1339 } 1340 break; 1341 1342 case HFP_AG_TERMINATE_CALL_BY_AG: 1343 switch (hfp_gsm_call_status()){ 1344 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1345 switch (hfp_gsm_callsetup_status()){ 1346 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1347 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1348 hfp_ag_set_callsetup_indicator(); 1349 hfp_ag_trigger_reject_call(); 1350 log_info("AG Rejected Incoming call, AG terminate call"); 1351 break; 1352 default: 1353 break; 1354 } 1355 break; 1356 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1357 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1358 hfp_ag_set_callsetup_indicator(); 1359 hfp_ag_set_call_indicator(); 1360 hfp_ag_trigger_terminate_call(); 1361 log_info("AG terminate call"); 1362 break; 1363 default: 1364 break; 1365 } 1366 break; 1367 case HFP_AG_CALL_DROPPED: 1368 switch (hfp_gsm_call_status()){ 1369 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1370 switch (hfp_gsm_callsetup_status()){ 1371 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1372 hfp_ag_stop_ringing(); 1373 log_info("Incoming call interrupted"); 1374 break; 1375 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1376 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1377 log_info("Outgoing call interrupted\n"); 1378 log_info("AG notify call dropped\n"); 1379 break; 1380 default: 1381 break; 1382 } 1383 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1384 hfp_ag_set_callsetup_indicator(); 1385 hfp_ag_transfer_callsetup_state(); 1386 break; 1387 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1388 if (hfp_ag_response_and_hold_active) { 1389 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1390 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1391 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1392 } 1393 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1394 hfp_ag_set_callsetup_indicator(); 1395 hfp_ag_set_call_indicator(); 1396 hfp_ag_trigger_terminate_call(); 1397 log_info("AG notify call dropped"); 1398 break; 1399 default: 1400 break; 1401 } 1402 break; 1403 1404 case HFP_AG_OUTGOING_CALL_INITIATED: 1405 // directly reject call if number of free slots is exceeded 1406 if (!hfp_gsm_call_possible()){ 1407 hfp_connection->send_error = 1; 1408 hfp_run_for_context(hfp_connection); 1409 break; 1410 } 1411 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1412 1413 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1414 1415 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1416 break; 1417 1418 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1419 // directly reject call if number of free slots is exceeded 1420 if (!hfp_gsm_call_possible()){ 1421 hfp_connection->send_error = 1; 1422 hfp_run_for_context(hfp_connection); 1423 break; 1424 } 1425 1426 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1427 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1428 1429 log_info("Redial last number"); 1430 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1431 1432 if (strlen(last_dialed_number) > 0){ 1433 log_info("Last number exists: accept call"); 1434 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1435 } else { 1436 log_info("log_infoLast number missing: reject call"); 1437 hfp_ag_outgoing_call_rejected(); 1438 } 1439 break; 1440 } 1441 case HFP_AG_OUTGOING_CALL_REJECTED: 1442 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1443 if (!hfp_connection){ 1444 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1445 break; 1446 } 1447 1448 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1449 hfp_connection->call_state = HFP_CALL_IDLE; 1450 hfp_connection->send_error = 1; 1451 hfp_run_for_context(hfp_connection); 1452 break; 1453 1454 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 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_connection->ok_pending = 1; 1462 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1463 1464 // trigger callsetup to be 1465 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1466 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1467 1468 hfp_ag_set_callsetup_indicator(); 1469 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1470 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1471 1472 // put current call on hold if active 1473 if (put_call_on_hold){ 1474 log_info("AG putting current call on hold for new outgoing calllog_info"); 1475 hfp_ag_set_callheld_indicator(); 1476 indicator_index = get_ag_indicator_index_for_name("callheld"); 1477 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1478 } 1479 1480 // start audio if needed 1481 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1482 break; 1483 } 1484 case HFP_AG_OUTGOING_CALL_RINGING: 1485 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1486 if (!hfp_connection){ 1487 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1488 break; 1489 } 1490 1491 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1492 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1493 hfp_ag_set_callsetup_indicator(); 1494 hfp_ag_transfer_callsetup_state(); 1495 break; 1496 1497 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1498 // get outgoing call 1499 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1500 if (!hfp_connection){ 1501 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1502 } 1503 if (!hfp_connection){ 1504 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1505 break; 1506 } 1507 1508 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1509 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1510 hfp_connection->call_state = HFP_CALL_ACTIVE; 1511 hfp_ag_set_callsetup_indicator(); 1512 hfp_ag_set_call_indicator(); 1513 hfp_ag_transfer_call_state(); 1514 hfp_ag_transfer_callsetup_state(); 1515 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1516 hfp_ag_set_callheld_indicator(); 1517 hfp_ag_transfer_callheld_state(); 1518 } 1519 break; 1520 } 1521 1522 case HFP_AG_CALL_HOLD_USER_BUSY: 1523 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1524 hfp_ag_set_callsetup_indicator(); 1525 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1526 hfp_connection->call_state = HFP_CALL_ACTIVE; 1527 log_info("AG: Call Waiting, User Busy"); 1528 break; 1529 1530 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1531 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1532 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1533 1534 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1535 if (call_held || call_setup_in_progress){ 1536 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1537 1538 } 1539 1540 if (call_setup_in_progress){ 1541 log_info("AG: Call Dropped, Accept new call"); 1542 hfp_ag_set_callsetup_indicator(); 1543 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1544 } else { 1545 log_info("AG: Call Dropped, Resume held call"); 1546 } 1547 if (call_held){ 1548 hfp_ag_set_callheld_indicator(); 1549 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1550 } 1551 1552 hfp_connection->call_state = HFP_CALL_ACTIVE; 1553 break; 1554 } 1555 1556 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1557 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1558 // only update if callsetup changed 1559 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1560 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1561 1562 if (call_setup_in_progress){ 1563 log_info("AG: Call on Hold, Accept new call"); 1564 hfp_ag_set_callsetup_indicator(); 1565 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1566 } else { 1567 log_info("AG: Swap calls"); 1568 } 1569 1570 hfp_ag_set_callheld_indicator(); 1571 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1572 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1573 hfp_connection->call_state = HFP_CALL_ACTIVE; 1574 break; 1575 } 1576 1577 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1578 // Adds a held call to the conversation. 1579 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1580 log_info("AG: Join 3-way-call"); 1581 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1582 hfp_ag_set_callheld_indicator(); 1583 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1584 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_CONFERENCE_CALL); 1585 } 1586 hfp_connection->call_state = HFP_CALL_ACTIVE; 1587 break; 1588 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1589 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1590 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1591 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1592 hfp_ag_set_call_indicator(); 1593 hfp_ag_set_callheld_indicator(); 1594 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1595 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1596 hfp_connection->call_state = HFP_CALL_IDLE; 1597 break; 1598 1599 default: 1600 break; 1601 } 1602 1603 1604 } 1605 1606 1607 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1608 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1609 if (!active_call) return; 1610 1611 int idx = active_call->index; 1612 hfp_enhanced_call_dir_t dir = active_call->direction; 1613 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1614 hfp_enhanced_call_mode_t mode = active_call->mode; 1615 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1616 uint8_t type = active_call->clip_type; 1617 char * number = active_call->clip_number; 1618 1619 char buffer[100]; 1620 // TODO: check length of a buffer, to fit the MTU 1621 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1622 if (number){ 1623 offset += snprintf(buffer+offset, sizeof(buffer)-offset, ", \"%s\",%u", number, type); 1624 } 1625 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1626 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, 1627 mode, mpty, type, number); 1628 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1629 } 1630 1631 static void hfp_run_for_context(hfp_connection_t *hfp_connection){ 1632 1633 // log_info("hfp_run_for_context %p", hfp_connection); 1634 1635 if (!hfp_connection) return; 1636 1637 if (!hfp_connection->rfcomm_cid) return; 1638 1639 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1640 log_info("hfp_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1641 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1642 return; 1643 } 1644 if (hfp_connection->send_status_of_current_calls){ 1645 hfp_connection->ok_pending = 0; 1646 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1647 hfp_connection->next_call_index++; 1648 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1649 } else { 1650 hfp_connection->next_call_index = 0; 1651 hfp_connection->ok_pending = 1; 1652 hfp_connection->send_status_of_current_calls = 0; 1653 } 1654 return; 1655 } 1656 1657 if (hfp_connection->ag_notify_incoming_call_waiting){ 1658 hfp_connection->ag_notify_incoming_call_waiting = 0; 1659 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1660 return; 1661 } 1662 1663 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1664 hfp_connection->ok_pending = 0; 1665 hfp_connection->send_error = 0; 1666 hfp_connection->command = HFP_CMD_NONE; 1667 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1668 return; 1669 } 1670 1671 if (hfp_connection->send_error){ 1672 hfp_connection->send_error = 0; 1673 hfp_connection->command = HFP_CMD_NONE; 1674 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1675 return; 1676 } 1677 1678 // note: before update AG indicators and ok_pending 1679 if (hfp_connection->send_response_and_hold_status){ 1680 int status = hfp_connection->send_response_and_hold_status - 1; 1681 hfp_connection->send_response_and_hold_status = 0; 1682 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1683 return; 1684 } 1685 1686 if (hfp_connection->ok_pending){ 1687 hfp_connection->ok_pending = 0; 1688 hfp_connection->command = HFP_CMD_NONE; 1689 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1690 return; 1691 } 1692 1693 // update AG indicators 1694 if (hfp_connection->ag_indicators_status_update_bitmap){ 1695 int i; 1696 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1697 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1698 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1699 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1700 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1701 break; 1702 } 1703 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1704 return; 1705 } 1706 } 1707 } 1708 1709 if (hfp_connection->ag_ring){ 1710 hfp_connection->ag_ring = 0; 1711 hfp_connection->command = HFP_CMD_NONE; 1712 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1713 return; 1714 } 1715 1716 if (hfp_connection->ag_send_clip){ 1717 hfp_connection->ag_send_clip = 0; 1718 hfp_connection->command = HFP_CMD_NONE; 1719 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1720 return; 1721 } 1722 1723 if (hfp_connection->send_phone_number_for_voice_tag){ 1724 hfp_connection->send_phone_number_for_voice_tag = 0; 1725 hfp_connection->command = HFP_CMD_NONE; 1726 hfp_connection->ok_pending = 1; 1727 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1728 return; 1729 } 1730 1731 if (hfp_connection->send_subscriber_number){ 1732 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1733 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1734 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1735 } else { 1736 hfp_connection->send_subscriber_number = 0; 1737 hfp_connection->next_subscriber_number_to_send = 0; 1738 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1739 } 1740 hfp_connection->command = HFP_CMD_NONE; 1741 1742 } 1743 1744 if (hfp_connection->send_microphone_gain){ 1745 hfp_connection->send_microphone_gain = 0; 1746 hfp_connection->command = HFP_CMD_NONE; 1747 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1748 return; 1749 } 1750 1751 if (hfp_connection->send_speaker_gain){ 1752 hfp_connection->send_speaker_gain = 0; 1753 hfp_connection->command = HFP_CMD_NONE; 1754 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1755 return; 1756 } 1757 1758 if (hfp_connection->send_ag_status_indicators){ 1759 hfp_connection->send_ag_status_indicators = 0; 1760 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1761 return; 1762 } 1763 1764 // trigger codec exchange if requested by app 1765 if (hfp_connection->trigger_codec_exchange){ 1766 log_info("trigger codec, command %u, codec state %u", hfp_connection->command, hfp_connection->codecs_state); 1767 } 1768 if (hfp_connection->trigger_codec_exchange && hfp_connection->command == HFP_CMD_NONE){ 1769 switch (hfp_connection->codecs_state){ 1770 case HFP_CODECS_IDLE: 1771 case HFP_CODECS_RECEIVED_LIST: 1772 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1773 case HFP_CODECS_ERROR: 1774 hfp_connection->trigger_codec_exchange = 0; 1775 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1776 break; 1777 default: 1778 break; 1779 } 1780 } 1781 1782 int cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1783 if (!cmd_sent){ 1784 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1785 } 1786 1787 if (!cmd_sent){ 1788 cmd_sent = call_setup_state_machine(hfp_connection); 1789 } 1790 1791 if (!cmd_sent){ 1792 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1793 } 1794 1795 if (hfp_connection->command == HFP_CMD_NONE && !cmd_sent){ 1796 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1797 switch(hfp_connection->state){ 1798 case HFP_W2_DISCONNECT_RFCOMM: 1799 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1800 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1801 break; 1802 default: 1803 break; 1804 } 1805 } 1806 1807 if (cmd_sent){ 1808 hfp_connection->command = HFP_CMD_NONE; 1809 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1810 } 1811 } 1812 1813 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1814 int i; 1815 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1816 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1817 if (indicator->uuid == number){ 1818 return indicator; 1819 } 1820 } 1821 return NULL; 1822 } 1823 1824 static void hfp_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1825 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1826 1827 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1828 if (size < 1) return; 1829 1830 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1831 if (!hfp_connection) return; 1832 1833 // temp overwrite last byte (most likely \n for log_info) 1834 char last_char = packet[size-1]; 1835 packet[size-1] = 0; 1836 log_info("HFP_RX %s", packet); 1837 packet[size-1] = last_char; 1838 1839 // process messages byte-wise 1840 int pos; 1841 for (pos = 0; pos < size ; pos++){ 1842 hfp_parse(hfp_connection, packet[pos], 0); 1843 } 1844 hfp_generic_status_indicator_t * indicator; 1845 int value; 1846 switch(hfp_connection->command){ 1847 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1848 if (hfp_ag_response_and_hold_active){ 1849 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1850 } 1851 hfp_connection->ok_pending = 1; 1852 break; 1853 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1854 value = btstack_atoi((char *)&hfp_connection->line_buffer[0]); 1855 log_info("HF Response and Hold: %u", value); 1856 switch(value){ 1857 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1858 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1859 break; 1860 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1861 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1862 break; 1863 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1864 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1865 break; 1866 default: 1867 break; 1868 } 1869 hfp_connection->ok_pending = 1; 1870 break; 1871 case HFP_CMD_HF_INDICATOR_STATUS: 1872 hfp_connection->command = HFP_CMD_NONE; 1873 // find indicator by assigned number 1874 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1875 if (!indicator){ 1876 hfp_connection->send_error = 1; 1877 break; 1878 } 1879 value = btstack_atoi((char *)&hfp_connection->line_buffer[0]); 1880 switch (indicator->uuid){ 1881 case 1: // enhanced security 1882 if (value > 1) { 1883 hfp_connection->send_error = 1; 1884 return; 1885 } 1886 log_info("HF Indicator 'enhanced security' set to %u", value); 1887 break; 1888 case 2: // battery level 1889 if (value > 100){ 1890 hfp_connection->send_error = 1; 1891 return; 1892 } 1893 log_info("HF Indicator 'battery' set to %u", value); 1894 break; 1895 default: 1896 log_info("HF Indicator unknown set to %u", value); 1897 break; 1898 } 1899 hfp_connection->ok_pending = 1; 1900 break; 1901 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1902 // expected by SLC state machine 1903 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1904 hfp_connection->send_ag_indicators_segment = 0; 1905 hfp_connection->send_ag_status_indicators = 1; 1906 break; 1907 case HFP_CMD_LIST_CURRENT_CALLS: 1908 hfp_connection->command = HFP_CMD_NONE; 1909 hfp_connection->next_call_index = 0; 1910 hfp_connection->send_status_of_current_calls = 1; 1911 break; 1912 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1913 if (subscriber_numbers_count == 0){ 1914 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1915 break; 1916 } 1917 hfp_connection->next_subscriber_number_to_send = 0; 1918 hfp_connection->send_subscriber_number = 1; 1919 break; 1920 case HFP_CMD_TRANSMIT_DTMF_CODES: 1921 hfp_connection->command = HFP_CMD_NONE; 1922 hfp_emit_string_event(hfp_callback, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &hfp_connection->line_buffer[0]); 1923 break; 1924 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1925 hfp_connection->command = HFP_CMD_NONE; 1926 hfp_emit_simple_event(hfp_callback, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1927 break; 1928 case HFP_CMD_TURN_OFF_EC_AND_NR: 1929 hfp_connection->command = HFP_CMD_NONE; 1930 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1931 hfp_connection->ok_pending = 1; 1932 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1933 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1934 } else { 1935 hfp_connection->send_error = 1; 1936 } 1937 break; 1938 case HFP_CMD_CALL_ANSWERED: 1939 hfp_connection->command = HFP_CMD_NONE; 1940 log_info("HFP: ATA"); 1941 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1942 break; 1943 case HFP_CMD_HANG_UP_CALL: 1944 hfp_connection->command = HFP_CMD_NONE; 1945 hfp_connection->ok_pending = 1; 1946 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1947 break; 1948 case HFP_CMD_CALL_HOLD: { 1949 // TODO: fully implement this 1950 log_error("HFP: unhandled call hold type %c", hfp_connection->line_buffer[0]); 1951 hfp_connection->command = HFP_CMD_NONE; 1952 hfp_connection->ok_pending = 1; 1953 hfp_connection->call_index = 0; 1954 1955 if (hfp_connection->line_buffer[1] != '\0'){ 1956 hfp_connection->call_index = btstack_atoi((char *)&hfp_connection->line_buffer[1]); 1957 } 1958 1959 switch (hfp_connection->line_buffer[0]){ 1960 case '0': 1961 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1962 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1963 break; 1964 case '1': 1965 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1966 // Where both a held and a waiting call exist, the above procedures shall apply to the 1967 // waiting call (i.e., not to the held call) in conflicting situation. 1968 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1969 break; 1970 case '2': 1971 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1972 // Where both a held and a waiting call exist, the above procedures shall apply to the 1973 // waiting call (i.e., not to the held call) in conflicting situation. 1974 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1975 break; 1976 case '3': 1977 // Adds a held call to the conversation. 1978 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1979 break; 1980 case '4': 1981 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1982 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1983 break; 1984 default: 1985 break; 1986 } 1987 break; 1988 } 1989 case HFP_CMD_CALL_PHONE_NUMBER: 1990 hfp_connection->command = HFP_CMD_NONE; 1991 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1992 break; 1993 case HFP_CMD_REDIAL_LAST_NUMBER: 1994 hfp_connection->command = HFP_CMD_NONE; 1995 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1996 break; 1997 case HFP_CMD_ENABLE_CLIP: 1998 hfp_connection->command = HFP_CMD_NONE; 1999 hfp_connection->clip_enabled = hfp_connection->line_buffer[8] != '0'; 2000 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2001 hfp_connection->ok_pending = 1; 2002 break; 2003 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2004 hfp_connection->command = HFP_CMD_NONE; 2005 hfp_connection->call_waiting_notification_enabled = hfp_connection->line_buffer[8] != '0'; 2006 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2007 hfp_connection->ok_pending = 1; 2008 break; 2009 case HFP_CMD_SET_SPEAKER_GAIN: 2010 hfp_connection->command = HFP_CMD_NONE; 2011 hfp_connection->ok_pending = 1; 2012 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2013 break; 2014 case HFP_CMD_SET_MICROPHONE_GAIN: 2015 hfp_connection->command = HFP_CMD_NONE; 2016 hfp_connection->ok_pending = 1; 2017 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2018 break; 2019 default: 2020 break; 2021 } 2022 } 2023 2024 static void hfp_run(void){ 2025 btstack_linked_list_iterator_t it; 2026 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2027 while (btstack_linked_list_iterator_has_next(&it)){ 2028 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2029 hfp_run_for_context(hfp_connection); 2030 } 2031 } 2032 2033 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2034 switch (packet_type){ 2035 case RFCOMM_DATA_PACKET: 2036 hfp_handle_rfcomm_data(packet_type, channel, packet, size); 2037 break; 2038 case HCI_EVENT_PACKET: 2039 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2040 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2041 hfp_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2042 return; 2043 } 2044 hfp_handle_hci_event(packet_type, channel, packet, size); 2045 break; 2046 default: 2047 break; 2048 } 2049 2050 hfp_run(); 2051 } 2052 2053 2054 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2055 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2056 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2057 return; 2058 } 2059 int i; 2060 hfp_codecs_nr = codecs_nr; 2061 for (i=0; i < codecs_nr; i++){ 2062 hfp_codecs[i] = codecs[i]; 2063 } 2064 } 2065 2066 void hfp_ag_init_supported_features(uint32_t supported_features){ 2067 hfp_supported_features = supported_features; 2068 } 2069 2070 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2071 hfp_ag_indicators_nr = ag_indicators_nr; 2072 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2073 } 2074 2075 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2076 if (hf_indicators_nr > HFP_MAX_NUM_HF_INDICATORS) return; 2077 hfp_generic_status_indicators_nr = hf_indicators_nr; 2078 memcpy(hfp_generic_status_indicators, hf_indicators, hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2079 } 2080 2081 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2082 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2083 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2084 } 2085 2086 2087 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2088 // register for HCI events 2089 hci_event_callback_registration.callback = &packet_handler; 2090 hci_add_event_handler(&hci_event_callback_registration); 2091 2092 rfcomm_register_service(&packet_handler, rfcomm_channel_nr, 0xffff); 2093 2094 hfp_ag_response_and_hold_active = 0; 2095 subscriber_numbers = NULL; 2096 subscriber_numbers_count = 0; 2097 2098 hfp_set_packet_handler_for_rfcomm_connections(&packet_handler); 2099 2100 hfp_gsm_init(); 2101 } 2102 2103 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2104 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE); 2105 } 2106 2107 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2108 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2109 if (!hfp_connection){ 2110 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2111 return; 2112 } 2113 hfp_release_service_level_connection(hfp_connection); 2114 hfp_run_for_context(hfp_connection); 2115 } 2116 2117 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2118 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2119 if (!hfp_connection){ 2120 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2121 return; 2122 } 2123 hfp_connection->extended_audio_gateway_error = 0; 2124 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2125 return; 2126 } 2127 hfp_connection->extended_audio_gateway_error = error; 2128 hfp_run_for_context(hfp_connection); 2129 } 2130 2131 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2132 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2133 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2134 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2135 2136 hfp_connection->establish_audio_connection = 1; 2137 if (!has_codec_negotiation_feature(hfp_connection)){ 2138 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2139 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2140 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2141 // now, pick link settings 2142 hfp_init_link_settings(hfp_connection); 2143 return; 2144 } 2145 2146 hfp_connection->trigger_codec_exchange = 1; 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->trigger_codec_exchange = 0; 2156 hfp_connection->establish_audio_connection = 0; 2157 hfp_ag_setup_audio_connection(hfp_connection); 2158 hfp_run_for_context(hfp_connection); 2159 } 2160 2161 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2162 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2163 if (!hfp_connection){ 2164 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2165 return; 2166 } 2167 hfp_release_audio_connection(hfp_connection); 2168 hfp_run_for_context(hfp_connection); 2169 } 2170 2171 /** 2172 * @brief Enable in-band ring tone 2173 */ 2174 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2175 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2176 return; 2177 } 2178 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2179 2180 btstack_linked_list_iterator_t it; 2181 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2182 while (btstack_linked_list_iterator_has_next(&it)){ 2183 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2184 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2185 hfp_run_for_context(hfp_connection); 2186 } 2187 } 2188 2189 /** 2190 * @brief Called from GSM 2191 */ 2192 void hfp_ag_incoming_call(void){ 2193 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2194 } 2195 2196 /** 2197 * @brief number is stored. 2198 */ 2199 void hfp_ag_set_clip(uint8_t type, const char * number){ 2200 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2201 } 2202 2203 void hfp_ag_call_dropped(void){ 2204 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2205 } 2206 2207 // call from AG UI 2208 void hfp_ag_answer_incoming_call(void){ 2209 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2210 } 2211 2212 void hfp_ag_join_held_call(void){ 2213 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2214 } 2215 2216 void hfp_ag_terminate_call(void){ 2217 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2218 } 2219 2220 void hfp_ag_outgoing_call_ringing(void){ 2221 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2222 } 2223 2224 void hfp_ag_outgoing_call_established(void){ 2225 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2226 } 2227 2228 void hfp_ag_outgoing_call_rejected(void){ 2229 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2230 } 2231 2232 void hfp_ag_outgoing_call_accepted(void){ 2233 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2234 } 2235 2236 void hfp_ag_hold_incoming_call(void){ 2237 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2238 } 2239 2240 void hfp_ag_accept_held_incoming_call(void) { 2241 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2242 } 2243 2244 void hfp_ag_reject_held_incoming_call(void){ 2245 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2246 } 2247 2248 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2249 int indicator_index = get_ag_indicator_index_for_name(name); 2250 if (indicator_index < 0) return; 2251 hfp_ag_indicators[indicator_index].status = value; 2252 2253 2254 btstack_linked_list_iterator_t it; 2255 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2256 while (btstack_linked_list_iterator_has_next(&it)){ 2257 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2258 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2259 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2260 continue; 2261 } 2262 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2263 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2264 hfp_run_for_context(hfp_connection); 2265 } 2266 } 2267 2268 void hfp_ag_set_registration_status(int status){ 2269 hfp_ag_set_ag_indicator("service", status); 2270 } 2271 2272 void hfp_ag_set_signal_strength(int strength){ 2273 hfp_ag_set_ag_indicator("signal", strength); 2274 } 2275 2276 void hfp_ag_set_roaming_status(int status){ 2277 hfp_ag_set_ag_indicator("roam", status); 2278 } 2279 2280 void hfp_ag_set_battery_level(int level){ 2281 hfp_ag_set_ag_indicator("battchg", level); 2282 } 2283 2284 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2285 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2286 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2287 if (!hfp_connection){ 2288 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2289 return; 2290 } 2291 2292 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2293 log_info("AG cannot acivate voice recognition - not supported by HF"); 2294 return; 2295 } 2296 2297 if (activate){ 2298 hfp_ag_establish_audio_connection(acl_handle); 2299 } 2300 2301 hfp_connection->ag_activate_voice_recognition = activate; 2302 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2303 hfp_run_for_context(hfp_connection); 2304 } 2305 2306 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2307 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2308 if (!hfp_connection){ 2309 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2310 return; 2311 } 2312 if (hfp_connection->microphone_gain != gain){ 2313 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2314 hfp_connection->microphone_gain = gain; 2315 hfp_connection->send_microphone_gain = 1; 2316 } 2317 hfp_run_for_context(hfp_connection); 2318 } 2319 2320 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2321 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2322 if (!hfp_connection){ 2323 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2324 return; 2325 } 2326 if (hfp_connection->speaker_gain != gain){ 2327 hfp_connection->speaker_gain = gain; 2328 hfp_connection->send_speaker_gain = 1; 2329 } 2330 hfp_run_for_context(hfp_connection); 2331 } 2332 2333 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2334 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2335 if (!hfp_connection){ 2336 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2337 return; 2338 } 2339 hfp_ag_set_clip(0, number); 2340 hfp_connection->send_phone_number_for_voice_tag = 1; 2341 } 2342 2343 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2344 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2345 if (!hfp_connection){ 2346 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2347 return; 2348 } 2349 hfp_connection->send_error = 1; 2350 } 2351 2352 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2353 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2354 if (!hfp_connection){ 2355 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2356 return; 2357 } 2358 hfp_connection->ok_pending = 1; 2359 } 2360 2361 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2362 subscriber_numbers = numbers; 2363 subscriber_numbers_count = numbers_count; 2364 } 2365 2366 void hfp_ag_clear_last_dialed_number(void){ 2367 hfp_gsm_clear_last_dialed_number(); 2368 } 2369 2370 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2371 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2372 if (!hfp_connection){ 2373 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2374 return; 2375 } 2376 if (!hfp_connection->call_waiting_notification_enabled) return; 2377 2378 hfp_connection->ag_notify_incoming_call_waiting = 1; 2379 hfp_run_for_context(hfp_connection); 2380 } 2381 2382