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