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 <string.h> 50 51 #include "hci_cmd.h" 52 #include "btstack_run_loop.h" 53 54 #include "bluetooth_sdp.h" 55 #include "hci.h" 56 #include "btstack_memory.h" 57 #include "hci_dump.h" 58 #include "l2cap.h" 59 #include "btstack_debug.h" 60 #include "btstack_event.h" 61 #include "classic/core.h" 62 #include "classic/hfp.h" 63 #include "classic/hfp_ag.h" 64 #include "classic/hfp_gsm_model.h" 65 #include "classic/sdp_client_rfcomm.h" 66 #include "classic/sdp_server.h" 67 #include "classic/sdp_util.h" 68 69 // private prototypes 70 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection); 71 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection); 72 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection); 73 74 // public prototypes 75 hfp_generic_status_indicator_t * get_hfp_generic_status_indicators(void); 76 int get_hfp_generic_status_indicators_nr(void); 77 void set_hfp_generic_status_indicators(hfp_generic_status_indicator_t * indicators, int indicator_nr); 78 void set_hfp_ag_indicators(hfp_ag_indicator_t * indicators, int indicator_nr); 79 int get_hfp_ag_indicators_nr(hfp_connection_t * context); 80 hfp_ag_indicator_t * get_hfp_ag_indicators(hfp_connection_t * context); 81 82 83 // const 84 static const char default_hfp_ag_service_name[] = "Voice gateway"; 85 86 // globals 87 static btstack_packet_callback_registration_t hfp_ag_hci_event_callback_registration; 88 89 static uint16_t hfp_supported_features; 90 91 static uint8_t hfp_codecs_nr; 92 static uint8_t hfp_codecs[HFP_MAX_NUM_CODECS]; 93 94 static int hfp_ag_indicators_nr; 95 static hfp_ag_indicator_t hfp_ag_indicators[HFP_MAX_NUM_INDICATORS]; 96 97 static int hfp_generic_status_indicators_nr; 98 static hfp_generic_status_indicator_t hfp_generic_status_indicators[HFP_MAX_NUM_INDICATORS]; 99 100 static int hfp_ag_call_hold_services_nr; 101 static char *hfp_ag_call_hold_services[6]; 102 static btstack_packet_handler_t hfp_ag_callback; 103 104 static hfp_response_and_hold_state_t hfp_ag_response_and_hold_state; 105 static int hfp_ag_response_and_hold_active; 106 107 // Subscriber information entries 108 static hfp_phone_number_t * subscriber_numbers; 109 static int subscriber_numbers_count; 110 111 // code 112 static int hfp_ag_get_ag_indicators_nr(hfp_connection_t * hfp_connection){ 113 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 114 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 115 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 116 hfp_ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 117 } 118 return hfp_connection->ag_indicators_nr; 119 } 120 121 hfp_ag_indicator_t * hfp_ag_get_ag_indicators(hfp_connection_t * hfp_connection){ 122 // TODO: save only value, and value changed in the hfp_connection? 123 if (hfp_connection->ag_indicators_nr != hfp_ag_indicators_nr){ 124 hfp_connection->ag_indicators_nr = hfp_ag_indicators_nr; 125 (void)memcpy(hfp_connection->ag_indicators, hfp_ag_indicators, 126 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 static hfp_connection_t * get_hfp_ag_connection_context_for_acl_handle(uint16_t handle){ 152 btstack_linked_list_iterator_t it; 153 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 154 while (btstack_linked_list_iterator_has_next(&it)){ 155 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 156 if (hfp_connection->acl_handle != handle) continue; 157 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 158 return hfp_connection; 159 } 160 return NULL; 161 } 162 163 static int use_in_band_tone(void){ 164 return get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 165 } 166 167 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 168 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 169 int ag = get_bit(hfp_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 170 return hf && ag; 171 } 172 173 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 174 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_THREE_WAY_CALLING); 175 int ag = get_bit(hfp_supported_features, HFP_AGSF_THREE_WAY_CALLING); 176 return hf && ag; 177 } 178 179 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 180 int hf = get_bit(hfp_connection->remote_supported_features, HFP_HFSF_HF_INDICATORS); 181 int ag = get_bit(hfp_supported_features, HFP_AGSF_HF_INDICATORS); 182 return hf && ag; 183 } 184 185 /* unsolicited responses */ 186 187 static int hfp_ag_send_change_in_band_ring_tone_setting_cmd(uint16_t cid){ 188 char buffer[20]; 189 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", 190 HFP_CHANGE_IN_BAND_RING_TONE_SETTING, use_in_band_tone()); 191 buffer[sizeof(buffer) - 1] = 0; 192 return send_str_over_rfcomm(cid, buffer); 193 } 194 195 static int hfp_ag_exchange_supported_features_cmd(uint16_t cid){ 196 char buffer[40]; 197 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n\r\nOK\r\n", 198 HFP_SUPPORTED_FEATURES, hfp_supported_features); 199 buffer[sizeof(buffer) - 1] = 0; 200 return send_str_over_rfcomm(cid, buffer); 201 } 202 203 static int hfp_ag_send_ok(uint16_t cid){ 204 char buffer[10]; 205 snprintf(buffer, sizeof(buffer), "\r\nOK\r\n"); 206 buffer[sizeof(buffer) - 1] = 0; 207 return send_str_over_rfcomm(cid, buffer); 208 } 209 210 static int hfp_ag_send_ring(uint16_t cid){ 211 return send_str_over_rfcomm(cid, (char *) "\r\nRING\r\n"); 212 } 213 214 static int hfp_ag_send_clip(uint16_t cid){ 215 char buffer[50]; 216 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", HFP_ENABLE_CLIP, 217 hfp_gsm_clip_number(), hfp_gsm_clip_type()); 218 buffer[sizeof(buffer) - 1] = 0; 219 return send_str_over_rfcomm(cid, buffer); 220 } 221 222 static int hfp_send_subscriber_number_cmd(uint16_t cid, uint8_t type, const char * number){ 223 char buffer[50]; 224 snprintf(buffer, sizeof(buffer), "\r\n%s: ,\"%s\",%u, , \r\n", 225 HFP_SUBSCRIBER_NUMBER_INFORMATION, number, type); 226 buffer[sizeof(buffer) - 1] = 0; 227 return send_str_over_rfcomm(cid, buffer); 228 } 229 230 static int hfp_ag_send_phone_number_for_voice_tag_cmd(uint16_t cid){ 231 char buffer[50]; 232 snprintf(buffer, sizeof(buffer), "\r\n%s: %s\r\n", 233 HFP_PHONE_NUMBER_FOR_VOICE_TAG, hfp_gsm_clip_number()); 234 buffer[sizeof(buffer) - 1] = 0; 235 return send_str_over_rfcomm(cid, buffer); 236 } 237 238 static int hfp_ag_send_call_waiting_notification(uint16_t cid){ 239 char buffer[50]; 240 snprintf(buffer, sizeof(buffer), "\r\n%s: \"%s\",%u\r\n", 241 HFP_ENABLE_CALL_WAITING_NOTIFICATION, hfp_gsm_clip_number(), 242 hfp_gsm_clip_type()); 243 buffer[sizeof(buffer) - 1] = 0; 244 return send_str_over_rfcomm(cid, buffer); 245 } 246 247 static int hfp_ag_send_error(uint16_t cid){ 248 char buffer[10]; 249 snprintf(buffer, sizeof(buffer), "\r\nERROR\r\n"); 250 buffer[sizeof(buffer) - 1] = 0; 251 return send_str_over_rfcomm(cid, buffer); 252 } 253 254 static int hfp_ag_send_report_extended_audio_gateway_error(uint16_t cid, uint8_t error){ 255 char buffer[20]; 256 snprintf(buffer, sizeof(buffer), "\r\n%s=%d\r\n", 257 HFP_EXTENDED_AUDIO_GATEWAY_ERROR, error); 258 buffer[sizeof(buffer) - 1] = 0; 259 return send_str_over_rfcomm(cid, buffer); 260 } 261 262 // get size for indicator string 263 static int hfp_ag_indicators_string_size(hfp_connection_t * hfp_connection, int i){ 264 // template: ("$NAME",($MIN,$MAX)) 265 return 8 + (int) strlen(hfp_ag_get_ag_indicators(hfp_connection)[i].name) 266 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range) 267 + string_len_for_uint32(hfp_ag_get_ag_indicators(hfp_connection)[i].min_range); 268 } 269 270 // store indicator 271 static void hfp_ag_indicators_string_store(hfp_connection_t * hfp_connection, int i, uint8_t * buffer, uint16_t buffer_size){ 272 snprintf((char *)buffer, buffer_size, "(\"%s\",(%d,%d)),", 273 hfp_ag_get_ag_indicators(hfp_connection)[i].name, 274 hfp_ag_get_ag_indicators(hfp_connection)[i].min_range, 275 hfp_ag_get_ag_indicators(hfp_connection)[i].max_range); 276 ((char *)buffer)[buffer_size - 1] = 0; 277 } 278 279 // structure: header [indicator [comma indicator]] footer 280 static int hfp_ag_indicators_cmd_generator_num_segments(hfp_connection_t * hfp_connection){ 281 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 282 if (!num_indicators) return 2; 283 return 3 + ((num_indicators-1) * 2); 284 } 285 286 // get size of individual segment for hfp_ag_retrieve_indicators_cmd 287 static int hfp_ag_indicators_cmd_generator_get_segment_len(hfp_connection_t * hfp_connection, int index){ 288 if (index == 0) { 289 return strlen(HFP_INDICATOR) + 3; // "\n\r%s:"" 290 } 291 index--; 292 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 293 int indicator_index = index >> 1; 294 if ((index & 1) == 0){ 295 return hfp_ag_indicators_string_size(hfp_connection, indicator_index); 296 } 297 if (indicator_index == (num_indicators - 1)){ 298 return 8; // "\r\n\r\nOK\r\n" 299 } 300 return 1; // comma 301 } 302 303 static void hfp_ag_indicators_cmd_generator_store_segment(hfp_connection_t * hfp_connection, int index, uint8_t * buffer, uint16_t buffer_size){ 304 if (index == 0){ 305 *buffer++ = '\r'; 306 *buffer++ = '\n'; 307 int len = strlen(HFP_INDICATOR); 308 (void)memcpy(buffer, HFP_INDICATOR, len); 309 buffer += len; 310 *buffer++ = ':'; 311 return; 312 } 313 index--; 314 int num_indicators = hfp_ag_get_ag_indicators_nr(hfp_connection); 315 int indicator_index = index >> 1; 316 if ((index & 1) == 0){ 317 hfp_ag_indicators_string_store(hfp_connection, indicator_index, buffer, buffer_size); 318 return; 319 } 320 if (indicator_index == (num_indicators-1)){ 321 (void)memcpy(buffer, "\r\n\r\nOK\r\n", 8); 322 return; 323 } 324 *buffer = ','; 325 } 326 327 static int hfp_hf_indicators_join(char * buffer, int buffer_size){ 328 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 329 int i; 330 int offset = 0; 331 for (i = 0; i < (hfp_generic_status_indicators_nr-1); i++) { 332 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_generic_status_indicators[i].uuid); 333 } 334 if (i < hfp_generic_status_indicators_nr){ 335 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_generic_status_indicators[i].uuid); 336 } 337 return offset; 338 } 339 340 static int hfp_hf_indicators_initial_status_join(char * buffer, int buffer_size){ 341 if (buffer_size < (hfp_generic_status_indicators_nr * 3)) return 0; 342 int i; 343 int offset = 0; 344 for (i = 0; i < hfp_generic_status_indicators_nr; i++) { 345 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); 346 } 347 return offset; 348 } 349 350 static int hfp_ag_indicators_status_join(char * buffer, int buffer_size){ 351 if (buffer_size < (hfp_ag_indicators_nr * 3)) return 0; 352 int i; 353 int offset = 0; 354 for (i = 0; i < (hfp_ag_indicators_nr-1); i++) { 355 offset += snprintf(buffer+offset, buffer_size-offset, "%d,", hfp_ag_indicators[i].status); 356 } 357 if (i<hfp_ag_indicators_nr){ 358 offset += snprintf(buffer+offset, buffer_size-offset, "%d", hfp_ag_indicators[i].status); 359 } 360 return offset; 361 } 362 363 static int hfp_ag_call_services_join(char * buffer, int buffer_size){ 364 if (buffer_size < (hfp_ag_call_hold_services_nr * 3)) return 0; 365 int i; 366 int offset = snprintf(buffer, buffer_size, "("); 367 for (i = 0; i < (hfp_ag_call_hold_services_nr-1); i++) { 368 offset += snprintf(buffer+offset, buffer_size-offset, "%s,", hfp_ag_call_hold_services[i]); 369 } 370 if (i<hfp_ag_call_hold_services_nr){ 371 offset += snprintf(buffer+offset, buffer_size-offset, "%s)", hfp_ag_call_hold_services[i]); 372 } 373 return offset; 374 } 375 376 static int hfp_ag_send_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, 377 int start_segment, int num_segments, 378 int (*get_segment_len)(hfp_connection_t * hfp_connection, int segment), 379 void (*store_segment) (hfp_connection_t * hfp_connection, int segment, uint8_t * buffer, uint16_t buffer_size)){ 380 381 // assumes: can send now == true 382 // assumes: num segments > 0 383 // assumes: individual segments are smaller than MTU 384 rfcomm_reserve_packet_buffer(); 385 int mtu = rfcomm_get_max_frame_size(cid); 386 uint8_t * data = rfcomm_get_outgoing_buffer(); 387 int offset = 0; 388 int segment = start_segment; 389 while (segment < num_segments){ 390 int segment_len = get_segment_len(hfp_connection, segment); 391 if ((offset + segment_len + 1) > mtu) break; 392 // append segment. As it appends a '\0', we provide a buffer one byte larger 393 store_segment(hfp_connection, segment, data+offset, segment_len + 1); 394 offset += segment_len; 395 segment++; 396 } 397 rfcomm_send_prepared(cid, offset); 398 #ifdef ENABLE_HFP_AT_MESSAGES 399 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_SENT, (char *) data); 400 #endif 401 return segment; 402 } 403 404 // returns next segment to store 405 static int hfp_ag_send_retrieve_indicators_cmd_via_generator(uint16_t cid, hfp_connection_t * hfp_connection, int start_segment){ 406 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 407 return hfp_ag_send_cmd_via_generator(cid, hfp_connection, start_segment, num_segments, 408 hfp_ag_indicators_cmd_generator_get_segment_len, 409 hfp_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 const int size = sizeof(buffer); 415 int offset = snprintf(buffer, size, "\r\n%s:", HFP_INDICATOR); 416 offset += hfp_ag_indicators_status_join(buffer+offset, size-offset-9); 417 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 418 return send_str_over_rfcomm(cid, buffer); 419 } 420 421 static int hfp_ag_send_retrieve_can_hold_call_cmd(uint16_t cid){ 422 char buffer[40]; 423 const int size = sizeof(buffer); 424 int offset = snprintf(buffer, size, "\r\n%s:", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES); 425 offset += hfp_ag_call_services_join(buffer+offset, size-offset-9); 426 offset += snprintf(buffer+offset, size-offset, "\r\n\r\nOK\r\n"); 427 return send_str_over_rfcomm(cid, buffer); 428 } 429 430 431 static int hfp_ag_send_list_supported_generic_status_indicators_cmd(uint16_t cid){ 432 return hfp_ag_send_ok(cid); 433 } 434 435 static int hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(uint16_t cid){ 436 char buffer[40]; 437 const int size = sizeof(buffer); 438 int offset = snprintf(buffer, size, "\r\n%s:(", HFP_GENERIC_STATUS_INDICATOR); 439 offset += hfp_hf_indicators_join(buffer+offset, size-offset-10); 440 offset += snprintf(buffer+offset, size-offset, ")\r\n\r\nOK\r\n"); 441 return send_str_over_rfcomm(cid, buffer); 442 } 443 444 static int hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(uint16_t cid){ 445 char buffer[40]; 446 int offset = hfp_hf_indicators_initial_status_join(buffer, sizeof(buffer) - 7); 447 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\nOK\r\n"); 448 return send_str_over_rfcomm(cid, buffer); 449 } 450 451 static int hfp_ag_send_transfer_ag_indicators_status_cmd(uint16_t cid, hfp_ag_indicator_t * indicator){ 452 char buffer[20]; 453 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d\r\n", 454 HFP_TRANSFER_AG_INDICATOR_STATUS, indicator->index, 455 indicator->status); 456 buffer[sizeof(buffer) - 1] = 0; 457 return send_str_over_rfcomm(cid, buffer); 458 } 459 460 static int hfp_ag_send_report_network_operator_name_cmd(uint16_t cid, hfp_network_opearator_t op){ 461 char buffer[41]; 462 if (strlen(op.name) == 0){ 463 snprintf(buffer, sizeof(buffer), "\r\n%s:%d,,\r\n\r\nOK\r\n", HFP_QUERY_OPERATOR_SELECTION, op.mode); 464 } else { 465 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s:%d,%d,", HFP_QUERY_OPERATOR_SELECTION, op.mode, op.format); 466 offset += snprintf(buffer+offset, 16, "%s", op.name); 467 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n\r\nOK\r\n"); 468 } 469 return send_str_over_rfcomm(cid, buffer); 470 } 471 472 static inline int hfp_ag_send_cmd_with_int(uint16_t cid, const char * cmd, uint8_t value){ 473 char buffer[30]; 474 snprintf(buffer, sizeof(buffer), "\r\n%s:%d\r\n", cmd, value); 475 return send_str_over_rfcomm(cid, buffer); 476 } 477 478 static int hfp_ag_send_suggest_codec_cmd(uint16_t cid, uint8_t codec){ 479 return hfp_ag_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 480 } 481 482 static int hfp_ag_send_activate_voice_recognition_cmd(uint16_t cid, uint8_t activate_voice_recognition){ 483 return hfp_ag_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate_voice_recognition); 484 } 485 486 static int hfp_ag_send_set_speaker_gain_cmd(uint16_t cid, uint8_t gain){ 487 return hfp_ag_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 488 } 489 490 static int hfp_ag_send_set_microphone_gain_cmd(uint16_t cid, uint8_t gain){ 491 return hfp_ag_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 492 } 493 494 static int hfp_ag_send_set_response_and_hold(uint16_t cid, int state){ 495 return hfp_ag_send_cmd_with_int(cid, HFP_RESPONSE_AND_HOLD, state); 496 } 497 498 static uint8_t hfp_ag_suggest_codec(hfp_connection_t *hfp_connection){ 499 if (hfp_connection->sco_for_msbc_failed) return HFP_CODEC_CVSD; 500 501 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_codecs_nr, hfp_codecs)){ 502 if (hfp_supports_codec(HFP_CODEC_MSBC, hfp_connection->remote_codecs_nr, hfp_connection->remote_codecs)){ 503 return HFP_CODEC_MSBC; 504 } 505 } 506 return HFP_CODEC_CVSD; 507 } 508 509 /* state machines */ 510 511 static uint8_t hfp_ag_esco_s4_supported(hfp_connection_t * hfp_connection){ 512 return (hfp_connection->remote_supported_features & (1<<HFP_HFSF_ESCO_S4)) && (hfp_supported_features & (1<<HFP_AGSF_ESCO_S4)); 513 } 514 515 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 516 /* events ( == commands): 517 HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs 518 HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 519 hf_trigger_codec_connection_setup == received BCC 520 ag_trigger_codec_connection_setup == received from AG to send BCS 521 HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS 522 */ 523 524 switch (hfp_connection->codecs_state){ 525 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 526 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 527 break; 528 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 529 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 530 break; 531 default: 532 break; 533 } 534 535 switch (hfp_connection->command){ 536 case HFP_CMD_AVAILABLE_CODECS: 537 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 538 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_LIST; 539 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 540 return 1; 541 } 542 543 switch (hfp_connection->codecs_state){ 544 case HFP_CODECS_AG_SENT_COMMON_CODEC: 545 case HFP_CODECS_EXCHANGED: 546 hfp_connection->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC; 547 break; 548 default: 549 break; 550 } 551 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 552 return 1; 553 554 case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP: 555 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 556 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 557 return 1; 558 559 case HFP_CMD_AG_SEND_COMMON_CODEC: 560 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 561 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 562 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 563 return 1; 564 565 case HFP_CMD_HF_CONFIRMED_CODEC: 566 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 567 hfp_connection->codecs_state = HFP_CODECS_ERROR; 568 hfp_ag_send_error(hfp_connection->rfcomm_cid); 569 return 1; 570 } 571 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 572 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 573 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 574 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 575 // now, pick link settings 576 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 577 #ifdef ENABLE_CC256X_ASSISTED_HFP 578 hfp_cc256x_prepare_for_sco(hfp_connection); 579 #endif 580 return 1; 581 default: 582 break; 583 } 584 return 0; 585 } 586 587 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 588 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 589 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 590 591 // if active call exist, set per-hfp_connection state active, too (when audio is on) 592 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 593 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 594 } 595 // if AG is ringing, also start ringing on the HF 596 if ((hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS) && 597 (hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS)){ 598 hfp_ag_hf_start_ringing(hfp_connection); 599 } 600 } 601 602 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 603 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 604 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 605 int sent = 0; 606 switch(hfp_connection->command){ 607 case HFP_CMD_SUPPORTED_FEATURES: 608 switch(hfp_connection->state){ 609 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 610 case HFP_EXCHANGE_SUPPORTED_FEATURES: 611 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 612 if (has_codec_negotiation_feature(hfp_connection)){ 613 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 614 } else { 615 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 616 } 617 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 618 return 1; 619 default: 620 break; 621 } 622 break; 623 case HFP_CMD_AVAILABLE_CODECS: 624 sent = codecs_exchange_state_machine(hfp_connection); 625 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 626 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 627 } 628 return sent; 629 630 case HFP_CMD_RETRIEVE_AG_INDICATORS: 631 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 632 // HF requested AG Indicators and we did expect it 633 hfp_connection->send_ag_indicators_segment = 0; 634 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 635 // continue below in state switch 636 } 637 break; 638 639 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 640 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 641 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 642 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 643 return 1; 644 645 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 646 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 647 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 648 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 649 } else if (has_hf_indicators_feature(hfp_connection)){ 650 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 651 } else { 652 hfp_ag_slc_established(hfp_connection); 653 } 654 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 655 return 1; 656 657 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 658 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 659 if (has_hf_indicators_feature(hfp_connection)){ 660 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 661 } 662 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 663 if (!has_hf_indicators_feature(hfp_connection)){ 664 hfp_ag_slc_established(hfp_connection); 665 } 666 return 1; 667 668 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 669 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 670 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 671 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 672 return 1; 673 674 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 675 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 676 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 677 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 678 return 1; 679 680 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 681 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 682 hfp_ag_slc_established(hfp_connection); 683 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 684 return 1; 685 default: 686 break; 687 } 688 689 switch (hfp_connection->state){ 690 case HFP_RETRIEVE_INDICATORS: { 691 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 692 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 693 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 694 if (next_segment < num_segments){ 695 // prepare sending of next segment 696 hfp_connection->send_ag_indicators_segment = next_segment; 697 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 698 } else { 699 // done, go to next state 700 hfp_connection->send_ag_indicators_segment = 0; 701 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 702 } 703 return 1; 704 } 705 default: 706 break; 707 } 708 return 0; 709 } 710 711 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 712 int sent = codecs_exchange_state_machine(hfp_connection); 713 if (sent) return 1; 714 715 switch(hfp_connection->command){ 716 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 717 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 718 hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 719 return 1; 720 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 721 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 722 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 723 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 724 hfp_ag_setup_audio_connection(hfp_connection); 725 } else { 726 hfp_ag_send_error(hfp_connection->rfcomm_cid); 727 } 728 return 1; 729 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 730 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 731 return 1; 732 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 733 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 734 return 1; 735 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 736 if (hfp_connection->network_operator.format != 0){ 737 hfp_ag_send_error(hfp_connection->rfcomm_cid); 738 } else { 739 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 740 } 741 return 1; 742 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 743 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 744 return 1; 745 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 746 if (hfp_connection->extended_audio_gateway_error){ 747 hfp_connection->extended_audio_gateway_error = 0; 748 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 749 return 1; 750 } 751 break; 752 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 753 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 754 return 1; 755 default: 756 break; 757 } 758 return 0; 759 } 760 761 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 762 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 763 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 764 765 766 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 767 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 768 hfp_connection->release_audio_connection = 0; 769 gap_disconnect(hfp_connection->sco_handle); 770 return 1; 771 } 772 773 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 774 775 // run codecs exchange 776 int sent = codecs_exchange_state_machine(hfp_connection); 777 if (sent) return 1; 778 779 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 780 if (hfp_connection->establish_audio_connection){ 781 hfp_connection->state = HFP_W4_SCO_CONNECTED; 782 hfp_connection->establish_audio_connection = 0; 783 hfp_setup_synchronous_connection(hfp_connection); 784 return 1; 785 } 786 return 0; 787 } 788 789 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 790 btstack_linked_list_iterator_t it; 791 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 792 793 while (btstack_linked_list_iterator_has_next(&it)){ 794 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 795 if ( & hfp_connection->hfp_timeout == ts) { 796 return hfp_connection; 797 } 798 } 799 return NULL; 800 } 801 802 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 803 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 804 if (!hfp_connection) return; 805 806 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 807 hfp_connection->ag_ring = 1; 808 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 809 810 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 811 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 812 813 hfp_ag_run_for_context(hfp_connection); 814 } 815 816 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 817 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 818 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 819 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 820 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 821 } 822 823 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 824 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 825 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 826 } 827 828 // 829 // transitition implementations for hfp_ag_call_state_machine 830 // 831 832 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 833 if (use_in_band_tone()){ 834 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 835 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 836 } else { 837 hfp_timeout_start(hfp_connection); 838 hfp_connection->ag_ring = 1; 839 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 840 hfp_connection->call_state = HFP_CALL_RINGING; 841 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 842 } 843 } 844 845 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 846 hfp_connection->ag_ring = 0; 847 hfp_connection->ag_send_clip = 0; 848 hfp_timeout_stop(hfp_connection); 849 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 850 } 851 852 static void hfp_ag_trigger_incoming_call(void){ 853 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 854 if (indicator_index < 0) return; 855 856 btstack_linked_list_iterator_t it; 857 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 858 while (btstack_linked_list_iterator_has_next(&it)){ 859 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 860 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 861 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 862 if (hfp_connection->call_state == HFP_CALL_IDLE){ 863 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 864 hfp_ag_hf_start_ringing(hfp_connection); 865 } 866 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 867 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 868 } 869 hfp_ag_run_for_context(hfp_connection); 870 } 871 } 872 873 static void hfp_ag_transfer_indicator(const char * name){ 874 int indicator_index = get_ag_indicator_index_for_name(name); 875 if (indicator_index < 0) return; 876 877 btstack_linked_list_iterator_t it; 878 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 879 while (btstack_linked_list_iterator_has_next(&it)){ 880 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 881 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 882 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 883 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 884 hfp_ag_run_for_context(hfp_connection); 885 } 886 } 887 888 static void hfp_ag_transfer_callsetup_state(void){ 889 hfp_ag_transfer_indicator("callsetup"); 890 } 891 892 static void hfp_ag_transfer_call_state(void){ 893 hfp_ag_transfer_indicator("call"); 894 } 895 896 static void hfp_ag_transfer_callheld_state(void){ 897 hfp_ag_transfer_indicator("callheld"); 898 } 899 900 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 901 902 int call_indicator_index = get_ag_indicator_index_for_name("call"); 903 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 904 905 btstack_linked_list_iterator_t it; 906 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 907 while (btstack_linked_list_iterator_has_next(&it)){ 908 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 909 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 910 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 911 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 912 913 hfp_ag_hf_stop_ringing(hfp_connection); 914 if (hfp_connection == source){ 915 916 if (use_in_band_tone()){ 917 hfp_connection->call_state = HFP_CALL_ACTIVE; 918 } else { 919 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 920 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 921 } 922 923 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 924 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 925 926 } else { 927 hfp_connection->call_state = HFP_CALL_IDLE; 928 } 929 hfp_ag_run_for_context(hfp_connection); 930 } 931 } 932 933 static void hfp_ag_ag_accept_call(void){ 934 935 int call_indicator_index = get_ag_indicator_index_for_name("call"); 936 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 937 938 btstack_linked_list_iterator_t it; 939 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 940 while (btstack_linked_list_iterator_has_next(&it)){ 941 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 942 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 943 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 944 945 hfp_ag_hf_stop_ringing(hfp_connection); 946 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 947 948 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 949 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 950 951 hfp_ag_run_for_context(hfp_connection); 952 break; // only single 953 } 954 } 955 956 static void hfp_ag_trigger_reject_call(void){ 957 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 958 btstack_linked_list_iterator_t it; 959 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 960 while (btstack_linked_list_iterator_has_next(&it)){ 961 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 962 if (connection->local_role != HFP_ROLE_AG) continue; 963 if ((connection->call_state != HFP_CALL_RINGING) && 964 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 965 hfp_ag_hf_stop_ringing(connection); 966 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 967 connection->call_state = HFP_CALL_IDLE; 968 hfp_ag_run_for_context(connection); 969 } 970 } 971 972 static void hfp_ag_trigger_terminate_call(void){ 973 int call_indicator_index = get_ag_indicator_index_for_name("call"); 974 975 btstack_linked_list_iterator_t it; 976 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 977 while (btstack_linked_list_iterator_has_next(&it)){ 978 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 979 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 980 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 981 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 982 hfp_connection->call_state = HFP_CALL_IDLE; 983 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 984 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 985 hfp_connection->release_audio_connection = 1; 986 } 987 hfp_ag_run_for_context(hfp_connection); 988 } 989 hfp_emit_simple_event(NULL, HFP_SUBEVENT_CALL_TERMINATED); 990 } 991 992 static void hfp_ag_set_callsetup_indicator(void){ 993 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 994 if (!indicator){ 995 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 996 return; 997 }; 998 indicator->status = hfp_gsm_callsetup_status(); 999 } 1000 1001 static void hfp_ag_set_callheld_indicator(void){ 1002 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1003 if (!indicator){ 1004 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1005 return; 1006 }; 1007 indicator->status = hfp_gsm_callheld_status(); 1008 } 1009 1010 static void hfp_ag_set_call_indicator(void){ 1011 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1012 if (!indicator){ 1013 log_error("hfp_ag_set_call_state: call indicator is missing"); 1014 return; 1015 }; 1016 indicator->status = hfp_gsm_call_status(); 1017 } 1018 1019 static void hfp_ag_stop_ringing(void){ 1020 btstack_linked_list_iterator_t it; 1021 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1022 while (btstack_linked_list_iterator_has_next(&it)){ 1023 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1024 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1025 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1026 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1027 hfp_ag_hf_stop_ringing(hfp_connection); 1028 } 1029 } 1030 1031 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1032 btstack_linked_list_iterator_t it; 1033 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1034 while (btstack_linked_list_iterator_has_next(&it)){ 1035 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1036 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1037 if (hfp_connection->call_state == call_state) return hfp_connection; 1038 } 1039 return NULL; 1040 } 1041 1042 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1043 btstack_linked_list_iterator_t it; 1044 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1045 while (btstack_linked_list_iterator_has_next(&it)){ 1046 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1047 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1048 hfp_connection->send_response_and_hold_status = state + 1; 1049 } 1050 } 1051 1052 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1053 int indicator_index; 1054 switch (hfp_connection->call_state){ 1055 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1056 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1057 // we got event: audio hfp_connection established 1058 hfp_timeout_start(hfp_connection); 1059 hfp_connection->ag_ring = 1; 1060 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1061 hfp_connection->call_state = HFP_CALL_RINGING; 1062 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1063 break; 1064 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1065 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1066 // we got event: audio hfp_connection established 1067 hfp_connection->call_state = HFP_CALL_ACTIVE; 1068 break; 1069 case HFP_CALL_W2_SEND_CALL_WAITING: 1070 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1071 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1072 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1073 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1074 break; 1075 default: 1076 break; 1077 } 1078 return 0; 1079 } 1080 1081 // functions extracted from hfp_ag_call_sm below 1082 static void hfp_ag_handle_reject_incoming_call(void){ 1083 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1084 if (!hfp_connection){ 1085 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1086 return; 1087 } 1088 1089 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1090 hfp_connection->call_state = HFP_CALL_IDLE; 1091 hfp_connection->send_error = 1; 1092 hfp_ag_run_for_context(hfp_connection); 1093 } 1094 1095 // hfp_connection is used to identify originating HF 1096 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1097 int indicator_index; 1098 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1099 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1100 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1101 1102 switch (event){ 1103 case HFP_AG_INCOMING_CALL: 1104 switch (hfp_gsm_call_status()){ 1105 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1106 switch (hfp_gsm_callsetup_status()){ 1107 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1108 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1109 hfp_ag_set_callsetup_indicator(); 1110 hfp_ag_trigger_incoming_call(); 1111 log_info("AG rings"); 1112 break; 1113 default: 1114 break; 1115 } 1116 break; 1117 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1118 switch (hfp_gsm_callsetup_status()){ 1119 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1120 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1121 hfp_ag_set_callsetup_indicator(); 1122 hfp_ag_trigger_incoming_call(); 1123 log_info("AG call waiting"); 1124 break; 1125 default: 1126 break; 1127 } 1128 break; 1129 default: 1130 break; 1131 } 1132 break; 1133 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1134 switch (hfp_gsm_call_status()){ 1135 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1136 switch (hfp_gsm_callsetup_status()){ 1137 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1138 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1139 hfp_ag_set_call_indicator(); 1140 hfp_ag_set_callsetup_indicator(); 1141 hfp_ag_ag_accept_call(); 1142 log_info("AG answers call, accept call by GSM"); 1143 break; 1144 default: 1145 break; 1146 } 1147 break; 1148 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1149 switch (hfp_gsm_callsetup_status()){ 1150 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1151 log_info("AG: current call is placed on hold, incoming call gets active"); 1152 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1153 hfp_ag_set_callsetup_indicator(); 1154 hfp_ag_set_callheld_indicator(); 1155 hfp_ag_transfer_callsetup_state(); 1156 hfp_ag_transfer_callheld_state(); 1157 break; 1158 default: 1159 break; 1160 } 1161 break; 1162 default: 1163 break; 1164 } 1165 break; 1166 1167 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1168 switch (hfp_gsm_call_status()){ 1169 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1170 switch (hfp_gsm_callheld_status()){ 1171 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1172 log_info("AG: joining held call with active call"); 1173 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1174 hfp_ag_set_callheld_indicator(); 1175 hfp_ag_transfer_callheld_state(); 1176 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1177 break; 1178 default: 1179 break; 1180 } 1181 break; 1182 default: 1183 break; 1184 } 1185 break; 1186 1187 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1188 switch (hfp_gsm_call_status()){ 1189 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1190 switch (hfp_gsm_callsetup_status()){ 1191 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1192 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1193 hfp_ag_set_callsetup_indicator(); 1194 hfp_ag_set_call_indicator(); 1195 hfp_ag_hf_accept_call(hfp_connection); 1196 hfp_connection->ok_pending = 1; 1197 log_info("HF answers call, accept call by GSM"); 1198 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1199 break; 1200 default: 1201 break; 1202 } 1203 break; 1204 default: 1205 break; 1206 } 1207 break; 1208 1209 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1210 switch (hfp_gsm_call_status()){ 1211 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1212 switch (hfp_gsm_callsetup_status()){ 1213 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1214 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1215 hfp_ag_response_and_hold_active = 1; 1216 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1217 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1218 // as with regualr call 1219 hfp_ag_set_call_indicator(); 1220 hfp_ag_set_callsetup_indicator(); 1221 hfp_ag_ag_accept_call(); 1222 log_info("AG response and hold - hold by AG"); 1223 break; 1224 default: 1225 break; 1226 } 1227 break; 1228 default: 1229 break; 1230 } 1231 break; 1232 1233 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1234 switch (hfp_gsm_call_status()){ 1235 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1236 switch (hfp_gsm_callsetup_status()){ 1237 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1238 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1239 hfp_ag_response_and_hold_active = 1; 1240 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1241 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1242 // as with regualr call 1243 hfp_ag_set_call_indicator(); 1244 hfp_ag_set_callsetup_indicator(); 1245 hfp_ag_hf_accept_call(hfp_connection); 1246 log_info("AG response and hold - hold by HF"); 1247 break; 1248 default: 1249 break; 1250 } 1251 break; 1252 default: 1253 break; 1254 } 1255 break; 1256 1257 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1258 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1259 if (!hfp_ag_response_and_hold_active) break; 1260 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1261 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1262 hfp_ag_response_and_hold_active = 0; 1263 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1264 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1265 log_info("Held Call accepted and active"); 1266 break; 1267 1268 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1269 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1270 if (!hfp_ag_response_and_hold_active) break; 1271 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1272 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1273 hfp_ag_response_and_hold_active = 0; 1274 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1275 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1276 // from terminate by ag 1277 hfp_ag_set_call_indicator(); 1278 hfp_ag_trigger_terminate_call(); 1279 break; 1280 1281 case HFP_AG_TERMINATE_CALL_BY_HF: 1282 switch (hfp_gsm_call_status()){ 1283 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1284 switch (hfp_gsm_callsetup_status()){ 1285 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1286 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1287 hfp_ag_set_callsetup_indicator(); 1288 hfp_ag_transfer_callsetup_state(); 1289 hfp_ag_trigger_reject_call(); 1290 log_info("HF Rejected Incoming call, AG terminate call"); 1291 break; 1292 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1293 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1294 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1295 hfp_ag_set_callsetup_indicator(); 1296 hfp_ag_transfer_callsetup_state(); 1297 log_info("AG terminate outgoing call process"); 1298 break; 1299 default: 1300 break; 1301 } 1302 break; 1303 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1304 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1305 hfp_ag_set_callsetup_indicator(); 1306 hfp_ag_set_call_indicator(); 1307 hfp_ag_trigger_terminate_call(); 1308 log_info("AG terminate call"); 1309 break; 1310 default: 1311 break; 1312 } 1313 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1314 break; 1315 1316 case HFP_AG_TERMINATE_CALL_BY_AG: 1317 switch (hfp_gsm_call_status()){ 1318 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1319 switch (hfp_gsm_callsetup_status()){ 1320 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1321 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1322 hfp_ag_set_callsetup_indicator(); 1323 hfp_ag_trigger_reject_call(); 1324 log_info("AG Rejected Incoming call, AG terminate call"); 1325 break; 1326 default: 1327 break; 1328 } 1329 break; 1330 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1331 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1332 hfp_ag_set_callsetup_indicator(); 1333 hfp_ag_set_call_indicator(); 1334 hfp_ag_trigger_terminate_call(); 1335 log_info("AG terminate call"); 1336 break; 1337 default: 1338 break; 1339 } 1340 break; 1341 case HFP_AG_CALL_DROPPED: 1342 switch (hfp_gsm_call_status()){ 1343 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1344 switch (hfp_gsm_callsetup_status()){ 1345 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1346 hfp_ag_stop_ringing(); 1347 log_info("Incoming call interrupted"); 1348 break; 1349 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1350 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1351 log_info("Outgoing call interrupted\n"); 1352 log_info("AG notify call dropped\n"); 1353 break; 1354 default: 1355 break; 1356 } 1357 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1358 hfp_ag_set_callsetup_indicator(); 1359 hfp_ag_transfer_callsetup_state(); 1360 hfp_ag_trigger_terminate_call(); 1361 break; 1362 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1363 if (hfp_ag_response_and_hold_active) { 1364 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1365 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1366 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1367 } 1368 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1369 hfp_ag_set_callsetup_indicator(); 1370 hfp_ag_set_call_indicator(); 1371 hfp_ag_trigger_terminate_call(); 1372 log_info("AG notify call dropped"); 1373 break; 1374 default: 1375 break; 1376 } 1377 break; 1378 1379 case HFP_AG_OUTGOING_CALL_INITIATED: 1380 // directly reject call if number of free slots is exceeded 1381 if (!hfp_gsm_call_possible()){ 1382 hfp_connection->send_error = 1; 1383 hfp_ag_run_for_context(hfp_connection); 1384 break; 1385 } 1386 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1387 1388 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1389 1390 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1391 break; 1392 1393 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1394 // directly reject call if number of free slots is exceeded 1395 if (!hfp_gsm_call_possible()){ 1396 hfp_connection->send_error = 1; 1397 hfp_ag_run_for_context(hfp_connection); 1398 break; 1399 } 1400 1401 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1402 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1403 1404 log_info("Redial last number"); 1405 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1406 1407 if (strlen(last_dialed_number) > 0){ 1408 log_info("Last number exists: accept call"); 1409 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1410 } else { 1411 log_info("log_infoLast number missing: reject call"); 1412 hfp_ag_handle_reject_incoming_call(); 1413 } 1414 break; 1415 } 1416 case HFP_AG_OUTGOING_CALL_REJECTED: 1417 hfp_ag_handle_reject_incoming_call(); 1418 break; 1419 1420 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1421 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1422 if (!hfp_connection){ 1423 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1424 break; 1425 } 1426 1427 hfp_connection->ok_pending = 1; 1428 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1429 1430 // trigger callsetup to be 1431 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1432 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1433 1434 hfp_ag_set_callsetup_indicator(); 1435 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1436 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1437 1438 // put current call on hold if active 1439 if (put_call_on_hold){ 1440 log_info("AG putting current call on hold for new outgoing calllog_info"); 1441 hfp_ag_set_callheld_indicator(); 1442 indicator_index = get_ag_indicator_index_for_name("callheld"); 1443 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1444 } 1445 1446 // start audio if needed 1447 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1448 break; 1449 } 1450 case HFP_AG_OUTGOING_CALL_RINGING: 1451 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1452 if (!hfp_connection){ 1453 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1454 break; 1455 } 1456 1457 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1458 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1459 hfp_ag_set_callsetup_indicator(); 1460 hfp_ag_transfer_callsetup_state(); 1461 break; 1462 1463 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1464 // get outgoing call 1465 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1466 if (!hfp_connection){ 1467 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1468 } 1469 if (!hfp_connection){ 1470 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1471 break; 1472 } 1473 1474 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1475 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1476 hfp_connection->call_state = HFP_CALL_ACTIVE; 1477 hfp_ag_set_callsetup_indicator(); 1478 hfp_ag_set_call_indicator(); 1479 hfp_ag_transfer_call_state(); 1480 hfp_ag_transfer_callsetup_state(); 1481 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1482 hfp_ag_set_callheld_indicator(); 1483 hfp_ag_transfer_callheld_state(); 1484 } 1485 break; 1486 } 1487 1488 case HFP_AG_CALL_HOLD_USER_BUSY: 1489 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1490 hfp_ag_set_callsetup_indicator(); 1491 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1492 hfp_connection->call_state = HFP_CALL_ACTIVE; 1493 log_info("AG: Call Waiting, User Busy"); 1494 break; 1495 1496 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1497 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1498 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1499 1500 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1501 if (call_held || call_setup_in_progress){ 1502 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1503 0, NULL); 1504 1505 } 1506 1507 if (call_setup_in_progress){ 1508 log_info("AG: Call Dropped, Accept new call"); 1509 hfp_ag_set_callsetup_indicator(); 1510 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1511 } else { 1512 log_info("AG: Call Dropped, Resume held call"); 1513 } 1514 if (call_held){ 1515 hfp_ag_set_callheld_indicator(); 1516 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1517 } 1518 1519 hfp_connection->call_state = HFP_CALL_ACTIVE; 1520 break; 1521 } 1522 1523 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1524 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1525 // only update if callsetup changed 1526 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1527 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1528 NULL); 1529 1530 if (call_setup_in_progress){ 1531 log_info("AG: Call on Hold, Accept new call"); 1532 hfp_ag_set_callsetup_indicator(); 1533 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1534 } else { 1535 log_info("AG: Swap calls"); 1536 } 1537 1538 hfp_ag_set_callheld_indicator(); 1539 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1540 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1541 hfp_connection->call_state = HFP_CALL_ACTIVE; 1542 break; 1543 } 1544 1545 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1546 // Adds a held call to the conversation. 1547 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1548 log_info("AG: Join 3-way-call"); 1549 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1550 hfp_ag_set_callheld_indicator(); 1551 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1552 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1553 } 1554 hfp_connection->call_state = HFP_CALL_ACTIVE; 1555 break; 1556 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1557 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1558 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1559 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1560 hfp_ag_set_call_indicator(); 1561 hfp_ag_set_callheld_indicator(); 1562 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1563 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1564 hfp_connection->call_state = HFP_CALL_IDLE; 1565 break; 1566 1567 default: 1568 break; 1569 } 1570 1571 1572 } 1573 1574 1575 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1576 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1577 if (!active_call) return; 1578 1579 int idx = active_call->index; 1580 hfp_enhanced_call_dir_t dir = active_call->direction; 1581 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1582 hfp_enhanced_call_mode_t mode = active_call->mode; 1583 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1584 uint8_t type = active_call->clip_type; 1585 char * number = active_call->clip_number; 1586 1587 char buffer[100]; 1588 // TODO: check length of a buffer, to fit the MTU 1589 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1590 if (number){ 1591 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1592 } 1593 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1594 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, 1595 mode, mpty, type, number); 1596 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1597 } 1598 1599 1600 // sends pending command, returns if command was sent 1601 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1602 1603 if (hfp_connection->send_status_of_current_calls){ 1604 hfp_connection->ok_pending = 0; 1605 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1606 hfp_connection->next_call_index++; 1607 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1608 return 1; 1609 } else { 1610 // TODO: this code should be removed. check a) before setting send_status_of_current_calls, or b) right before hfp_ag_send_call_status above 1611 hfp_connection->next_call_index = 0; 1612 hfp_connection->ok_pending = 1; 1613 hfp_connection->send_status_of_current_calls = 0; 1614 } 1615 } 1616 1617 if (hfp_connection->ag_notify_incoming_call_waiting){ 1618 hfp_connection->ag_notify_incoming_call_waiting = 0; 1619 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1620 return 1; 1621 } 1622 1623 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1624 hfp_connection->ok_pending = 0; 1625 hfp_connection->send_error = 0; 1626 hfp_connection->command = HFP_CMD_NONE; 1627 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1628 return 1; 1629 } 1630 1631 if (hfp_connection->send_error){ 1632 hfp_connection->send_error = 0; 1633 hfp_connection->command = HFP_CMD_NONE; 1634 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1635 return 1; 1636 } 1637 1638 // note: before update AG indicators and ok_pending 1639 if (hfp_connection->send_response_and_hold_status){ 1640 int status = hfp_connection->send_response_and_hold_status - 1; 1641 hfp_connection->send_response_and_hold_status = 0; 1642 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1643 return 1; 1644 } 1645 1646 if (hfp_connection->ok_pending){ 1647 hfp_connection->ok_pending = 0; 1648 hfp_connection->command = HFP_CMD_NONE; 1649 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1650 return 1; 1651 } 1652 1653 // update AG indicators 1654 if (hfp_connection->ag_indicators_status_update_bitmap){ 1655 int i; 1656 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1657 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1658 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1659 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1660 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1661 break; 1662 } 1663 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1664 return 1; 1665 } 1666 } 1667 } 1668 1669 if (hfp_connection->ag_ring){ 1670 hfp_connection->ag_ring = 0; 1671 hfp_connection->command = HFP_CMD_NONE; 1672 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1673 return 1; 1674 } 1675 1676 if (hfp_connection->ag_send_clip){ 1677 hfp_connection->ag_send_clip = 0; 1678 hfp_connection->command = HFP_CMD_NONE; 1679 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1680 return 1; 1681 } 1682 1683 if (hfp_connection->send_phone_number_for_voice_tag){ 1684 hfp_connection->send_phone_number_for_voice_tag = 0; 1685 hfp_connection->command = HFP_CMD_NONE; 1686 hfp_connection->ok_pending = 1; 1687 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1688 return 1; 1689 } 1690 1691 if (hfp_connection->send_subscriber_number){ 1692 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1693 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1694 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1695 } else { 1696 hfp_connection->send_subscriber_number = 0; 1697 hfp_connection->next_subscriber_number_to_send = 0; 1698 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1699 } 1700 hfp_connection->command = HFP_CMD_NONE; 1701 return 1; 1702 } 1703 1704 if (hfp_connection->send_microphone_gain){ 1705 hfp_connection->send_microphone_gain = 0; 1706 hfp_connection->command = HFP_CMD_NONE; 1707 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1708 return 1; 1709 } 1710 1711 if (hfp_connection->send_speaker_gain){ 1712 hfp_connection->send_speaker_gain = 0; 1713 hfp_connection->command = HFP_CMD_NONE; 1714 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1715 return 1; 1716 } 1717 1718 if (hfp_connection->send_ag_status_indicators){ 1719 hfp_connection->send_ag_status_indicators = 0; 1720 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1721 return 1; 1722 } 1723 1724 return 0; 1725 } 1726 1727 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1728 1729 btstack_assert(hfp_connection != NULL); 1730 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1731 1732 // during SDP query, RFCOMM CID is not set 1733 if (hfp_connection->rfcomm_cid == 0) return; 1734 1735 // assert command could be sent 1736 if (hci_can_send_command_packet_now() == 0) return; 1737 1738 #ifdef ENABLE_CC256X_ASSISTED_HFP 1739 // WBS Disassociate 1740 if (hfp_connection->cc256x_send_wbs_disassociate){ 1741 hfp_connection->cc256x_send_wbs_disassociate = false; 1742 hci_send_cmd(&hci_ti_wbs_disassociate); 1743 return; 1744 } 1745 // Write Codec Config 1746 if (hfp_connection->cc256x_send_write_codec_config){ 1747 hfp_connection->cc256x_send_write_codec_config = false; 1748 hfp_cc256x_write_codec_config(hfp_connection); 1749 return; 1750 } 1751 // WBS Associate 1752 if (hfp_connection->cc256x_send_wbs_associate){ 1753 hfp_connection->cc256x_send_wbs_associate = false; 1754 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 1755 return; 1756 } 1757 #endif 1758 #ifdef ENABLE_BCM_PCM_WBS 1759 // Enable WBS 1760 if (hfp_connection->bcm_send_enable_wbs){ 1761 hfp_connection->bcm_send_enable_wbs = false; 1762 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 1763 return; 1764 } 1765 // Write I2S/PCM params 1766 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 1767 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 1768 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 1769 return; 1770 } 1771 // Disable WBS 1772 if (hfp_connection->bcm_send_disable_wbs){ 1773 hfp_connection->bcm_send_disable_wbs = false; 1774 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 1775 return; 1776 } 1777 #endif 1778 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 1779 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 1780 hfp_finalize_connection_context(hfp_connection); 1781 return; 1782 } 1783 #endif 1784 1785 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1786 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1787 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1788 return; 1789 } 1790 1791 int cmd_sent = hfp_ag_send_commands(hfp_connection); 1792 1793 if (!cmd_sent){ 1794 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1795 } 1796 1797 if (!cmd_sent){ 1798 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1799 } 1800 1801 if (!cmd_sent){ 1802 cmd_sent = call_setup_state_machine(hfp_connection); 1803 } 1804 1805 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 1806 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 1807 log_info("trigger codec, command %u, codec state %u", hfp_connection->command, hfp_connection->codecs_state); 1808 switch (hfp_connection->codecs_state){ 1809 case HFP_CODECS_IDLE: 1810 case HFP_CODECS_RECEIVED_LIST: 1811 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1812 case HFP_CODECS_ERROR: 1813 hfp_connection->trigger_codec_exchange = 0; 1814 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1815 break; 1816 default: 1817 break; 1818 } 1819 } 1820 1821 if (!cmd_sent){ 1822 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1823 } 1824 1825 1826 // disconnect 1827 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 1828 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1829 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1830 } 1831 1832 if (cmd_sent){ 1833 hfp_connection->command = HFP_CMD_NONE; 1834 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1835 } 1836 } 1837 1838 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1839 int i; 1840 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1841 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1842 if (indicator->uuid == number){ 1843 return indicator; 1844 } 1845 } 1846 return NULL; 1847 } 1848 1849 static int hfp_parser_is_end_of_line(uint8_t byte){ 1850 return (byte == '\n') || (byte == '\r'); 1851 } 1852 1853 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1854 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1855 1856 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1857 if (size < 1) return; 1858 1859 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1860 if (!hfp_connection) return; 1861 1862 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 1863 #ifdef ENABLE_HFP_AT_MESSAGES 1864 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1865 #endif 1866 1867 // process messages byte-wise 1868 int pos; 1869 for (pos = 0; pos < size ; pos++){ 1870 hfp_parse(hfp_connection, packet[pos], 0); 1871 1872 // parse until end of line 1873 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1874 1875 hfp_generic_status_indicator_t * indicator; 1876 switch(hfp_connection->command){ 1877 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1878 if (hfp_ag_response_and_hold_active){ 1879 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1880 } 1881 hfp_connection->ok_pending = 1; 1882 break; 1883 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1884 switch(hfp_connection->ag_response_and_hold_action){ 1885 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1886 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1887 break; 1888 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1889 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1890 break; 1891 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1892 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1893 break; 1894 default: 1895 break; 1896 } 1897 hfp_connection->ok_pending = 1; 1898 break; 1899 case HFP_CMD_HF_INDICATOR_STATUS: 1900 hfp_connection->command = HFP_CMD_NONE; 1901 // find indicator by assigned number 1902 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1903 if (!indicator){ 1904 hfp_connection->send_error = 1; 1905 break; 1906 } 1907 switch (indicator->uuid){ 1908 case 1: // enhanced security 1909 if (hfp_connection->parser_indicator_value > 1) { 1910 hfp_connection->send_error = 1; 1911 return; 1912 } 1913 log_info("HF Indicator 'enhanced security' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1914 break; 1915 case 2: // battery level 1916 if (hfp_connection->parser_indicator_value > 100){ 1917 hfp_connection->send_error = 1; 1918 return; 1919 } 1920 log_info("HF Indicator 'battery' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1921 break; 1922 default: 1923 log_info("HF Indicator unknown set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1924 break; 1925 } 1926 hfp_connection->ok_pending = 1; 1927 break; 1928 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1929 // expected by SLC state machine 1930 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1931 hfp_connection->send_ag_indicators_segment = 0; 1932 hfp_connection->send_ag_status_indicators = 1; 1933 break; 1934 case HFP_CMD_LIST_CURRENT_CALLS: 1935 hfp_connection->command = HFP_CMD_NONE; 1936 hfp_connection->next_call_index = 0; 1937 hfp_connection->send_status_of_current_calls = 1; 1938 break; 1939 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1940 if (subscriber_numbers_count == 0){ 1941 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1942 break; 1943 } 1944 hfp_connection->next_subscriber_number_to_send = 0; 1945 hfp_connection->send_subscriber_number = 1; 1946 break; 1947 case HFP_CMD_TRANSMIT_DTMF_CODES: 1948 { 1949 hfp_connection->command = HFP_CMD_NONE; 1950 char buffer[2]; 1951 buffer[0] = (char) hfp_connection->ag_dtmf_code; 1952 buffer[1] = 0; 1953 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 1954 break; 1955 } 1956 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1957 hfp_connection->command = HFP_CMD_NONE; 1958 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1959 break; 1960 case HFP_CMD_TURN_OFF_EC_AND_NR: 1961 hfp_connection->command = HFP_CMD_NONE; 1962 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1963 hfp_connection->ok_pending = 1; 1964 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1965 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1966 } else { 1967 hfp_connection->send_error = 1; 1968 } 1969 break; 1970 case HFP_CMD_CALL_ANSWERED: 1971 hfp_connection->command = HFP_CMD_NONE; 1972 log_info("HFP: ATA"); 1973 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1974 break; 1975 case HFP_CMD_HANG_UP_CALL: 1976 hfp_connection->command = HFP_CMD_NONE; 1977 hfp_connection->ok_pending = 1; 1978 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1979 break; 1980 case HFP_CMD_CALL_HOLD: { 1981 hfp_connection->command = HFP_CMD_NONE; 1982 hfp_connection->ok_pending = 1; 1983 1984 switch (hfp_connection->ag_call_hold_action){ 1985 case 0: 1986 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1987 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1988 break; 1989 case 1: 1990 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1991 // Where both a held and a waiting call exist, the above procedures shall apply to the 1992 // waiting call (i.e., not to the held call) in conflicting situation. 1993 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1994 break; 1995 case 2: 1996 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1997 // Where both a held and a waiting call exist, the above procedures shall apply to the 1998 // waiting call (i.e., not to the held call) in conflicting situation. 1999 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2000 break; 2001 case 3: 2002 // Adds a held call to the conversation. 2003 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2004 break; 2005 case 4: 2006 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2007 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2008 break; 2009 default: 2010 break; 2011 } 2012 hfp_connection->call_index = 0; 2013 break; 2014 } 2015 case HFP_CMD_CALL_PHONE_NUMBER: 2016 hfp_connection->command = HFP_CMD_NONE; 2017 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 2018 break; 2019 case HFP_CMD_REDIAL_LAST_NUMBER: 2020 hfp_connection->command = HFP_CMD_NONE; 2021 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2022 break; 2023 case HFP_CMD_ENABLE_CLIP: 2024 hfp_connection->command = HFP_CMD_NONE; 2025 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2026 hfp_connection->ok_pending = 1; 2027 break; 2028 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2029 hfp_connection->command = HFP_CMD_NONE; 2030 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2031 hfp_connection->ok_pending = 1; 2032 break; 2033 case HFP_CMD_SET_SPEAKER_GAIN: 2034 hfp_connection->command = HFP_CMD_NONE; 2035 hfp_connection->ok_pending = 1; 2036 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2037 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2038 break; 2039 case HFP_CMD_SET_MICROPHONE_GAIN: 2040 hfp_connection->command = HFP_CMD_NONE; 2041 hfp_connection->ok_pending = 1; 2042 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2043 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2044 break; 2045 default: 2046 break; 2047 } 2048 } 2049 } 2050 2051 static void hfp_ag_run(void){ 2052 btstack_linked_list_iterator_t it; 2053 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2054 while (btstack_linked_list_iterator_has_next(&it)){ 2055 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2056 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2057 hfp_ag_run_for_context(hfp_connection); 2058 } 2059 } 2060 2061 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2062 switch (packet_type){ 2063 case RFCOMM_DATA_PACKET: 2064 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 2065 break; 2066 case HCI_EVENT_PACKET: 2067 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2068 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2069 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2070 return; 2071 } 2072 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2073 break; 2074 default: 2075 break; 2076 } 2077 2078 hfp_ag_run(); 2079 } 2080 2081 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2082 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2083 hfp_ag_run(); 2084 } 2085 2086 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2087 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2088 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2089 return; 2090 } 2091 int i; 2092 hfp_codecs_nr = codecs_nr; 2093 for (i=0; i < codecs_nr; i++){ 2094 hfp_codecs[i] = codecs[i]; 2095 } 2096 } 2097 2098 void hfp_ag_init_supported_features(uint32_t supported_features){ 2099 hfp_supported_features = supported_features; 2100 } 2101 2102 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2103 hfp_ag_indicators_nr = ag_indicators_nr; 2104 (void)memcpy(hfp_ag_indicators, ag_indicators, 2105 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2106 } 2107 2108 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2109 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2110 hfp_generic_status_indicators_nr = hf_indicators_nr; 2111 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2112 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2113 } 2114 2115 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2116 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2117 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2118 call_hold_services_nr * sizeof(char *)); 2119 } 2120 2121 2122 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2123 2124 hfp_init(); 2125 hfp_ag_call_hold_services_nr = 0; 2126 hfp_ag_response_and_hold_active = 0; 2127 hfp_ag_indicators_nr = 0; 2128 hfp_codecs_nr = 0; 2129 hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2130 subscriber_numbers = NULL; 2131 subscriber_numbers_count = 0; 2132 2133 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2134 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2135 2136 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2137 2138 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2139 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2140 2141 hfp_gsm_init(); 2142 } 2143 2144 void hfp_ag_deinit(void){ 2145 hfp_deinit(); 2146 hfp_gsm_deinit(); 2147 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2148 (void) memset(&hfp_ag_callback, 0, sizeof(btstack_packet_handler_t)); 2149 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2150 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2151 } 2152 2153 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2154 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2155 } 2156 2157 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2158 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2159 if (!hfp_connection){ 2160 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2161 return; 2162 } 2163 hfp_release_service_level_connection(hfp_connection); 2164 hfp_ag_run_for_context(hfp_connection); 2165 } 2166 2167 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2168 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2169 if (!hfp_connection){ 2170 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2171 return; 2172 } 2173 hfp_connection->extended_audio_gateway_error = 0; 2174 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2175 return; 2176 } 2177 hfp_connection->extended_audio_gateway_error = error; 2178 hfp_ag_run_for_context(hfp_connection); 2179 } 2180 2181 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2182 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2183 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2184 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2185 2186 hfp_connection->establish_audio_connection = 1; 2187 if (!has_codec_negotiation_feature(hfp_connection)){ 2188 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2189 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2190 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2191 // now, pick link settings 2192 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2193 #ifdef ENABLE_CC256X_ASSISTED_HFP 2194 hfp_cc256x_prepare_for_sco(hfp_connection); 2195 #endif 2196 return; 2197 } 2198 2199 hfp_connection->trigger_codec_exchange = 1; 2200 } 2201 2202 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2203 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2204 if (!hfp_connection){ 2205 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2206 return; 2207 } 2208 hfp_connection->trigger_codec_exchange = 0; 2209 hfp_connection->establish_audio_connection = 0; 2210 hfp_ag_setup_audio_connection(hfp_connection); 2211 hfp_ag_run_for_context(hfp_connection); 2212 } 2213 2214 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2215 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2216 if (!hfp_connection){ 2217 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2218 return; 2219 } 2220 hfp_release_audio_connection(hfp_connection); 2221 hfp_ag_run_for_context(hfp_connection); 2222 } 2223 2224 /** 2225 * @brief Enable in-band ring tone 2226 */ 2227 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2228 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2229 return; 2230 } 2231 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2232 2233 btstack_linked_list_iterator_t it; 2234 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2235 while (btstack_linked_list_iterator_has_next(&it)){ 2236 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2237 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2238 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2239 hfp_ag_run_for_context(hfp_connection); 2240 } 2241 } 2242 2243 /** 2244 * @brief Called from GSM 2245 */ 2246 void hfp_ag_incoming_call(void){ 2247 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2248 } 2249 2250 /** 2251 * @brief number is stored. 2252 */ 2253 void hfp_ag_set_clip(uint8_t type, const char * number){ 2254 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2255 } 2256 2257 void hfp_ag_call_dropped(void){ 2258 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2259 } 2260 2261 // call from AG UI 2262 void hfp_ag_answer_incoming_call(void){ 2263 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2264 } 2265 2266 void hfp_ag_join_held_call(void){ 2267 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2268 } 2269 2270 void hfp_ag_terminate_call(void){ 2271 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2272 } 2273 2274 void hfp_ag_outgoing_call_ringing(void){ 2275 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2276 } 2277 2278 void hfp_ag_outgoing_call_established(void){ 2279 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2280 } 2281 2282 void hfp_ag_outgoing_call_rejected(void){ 2283 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2284 } 2285 2286 void hfp_ag_outgoing_call_accepted(void){ 2287 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2288 } 2289 2290 void hfp_ag_hold_incoming_call(void){ 2291 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2292 } 2293 2294 void hfp_ag_accept_held_incoming_call(void) { 2295 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2296 } 2297 2298 void hfp_ag_reject_held_incoming_call(void){ 2299 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2300 } 2301 2302 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2303 int indicator_index = get_ag_indicator_index_for_name(name); 2304 if (indicator_index < 0) return; 2305 hfp_ag_indicators[indicator_index].status = value; 2306 2307 2308 btstack_linked_list_iterator_t it; 2309 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2310 while (btstack_linked_list_iterator_has_next(&it)){ 2311 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2312 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2313 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2314 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2315 continue; 2316 } 2317 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2318 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2319 hfp_ag_run_for_context(hfp_connection); 2320 } 2321 } 2322 2323 void hfp_ag_set_registration_status(int status){ 2324 hfp_ag_set_ag_indicator("service", status); 2325 } 2326 2327 void hfp_ag_set_signal_strength(int strength){ 2328 hfp_ag_set_ag_indicator("signal", strength); 2329 } 2330 2331 void hfp_ag_set_roaming_status(int status){ 2332 hfp_ag_set_ag_indicator("roam", status); 2333 } 2334 2335 void hfp_ag_set_battery_level(int level){ 2336 hfp_ag_set_ag_indicator("battchg", level); 2337 } 2338 2339 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2340 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2341 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2342 if (!hfp_connection){ 2343 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2344 return; 2345 } 2346 2347 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2348 log_info("AG cannot acivate voice recognition - not supported by HF"); 2349 return; 2350 } 2351 2352 if (activate){ 2353 hfp_ag_establish_audio_connection(acl_handle); 2354 } 2355 2356 hfp_connection->ag_activate_voice_recognition = activate; 2357 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2358 hfp_ag_run_for_context(hfp_connection); 2359 } 2360 2361 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2362 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2363 if (!hfp_connection){ 2364 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2365 return; 2366 } 2367 if (hfp_connection->microphone_gain != gain){ 2368 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2369 hfp_connection->microphone_gain = gain; 2370 hfp_connection->send_microphone_gain = 1; 2371 } 2372 hfp_ag_run_for_context(hfp_connection); 2373 } 2374 2375 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2376 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2377 if (!hfp_connection){ 2378 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2379 return; 2380 } 2381 if (hfp_connection->speaker_gain != gain){ 2382 hfp_connection->speaker_gain = gain; 2383 hfp_connection->send_speaker_gain = 1; 2384 } 2385 hfp_ag_run_for_context(hfp_connection); 2386 } 2387 2388 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2389 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2390 if (!hfp_connection){ 2391 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2392 return; 2393 } 2394 hfp_ag_set_clip(0, number); 2395 hfp_connection->send_phone_number_for_voice_tag = 1; 2396 } 2397 2398 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2399 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2400 if (!hfp_connection){ 2401 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2402 return; 2403 } 2404 hfp_connection->send_error = 1; 2405 } 2406 2407 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2408 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2409 if (!hfp_connection){ 2410 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2411 return; 2412 } 2413 hfp_connection->ok_pending = 1; 2414 } 2415 2416 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2417 subscriber_numbers = numbers; 2418 subscriber_numbers_count = numbers_count; 2419 } 2420 2421 void hfp_ag_clear_last_dialed_number(void){ 2422 hfp_gsm_clear_last_dialed_number(); 2423 } 2424 2425 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2426 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2427 if (!hfp_connection){ 2428 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2429 return; 2430 } 2431 if (!hfp_connection->call_waiting_notification_enabled) return; 2432 2433 hfp_connection->ag_notify_incoming_call_waiting = 1; 2434 hfp_ag_run_for_context(hfp_connection); 2435 } 2436 2437 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){ 2438 if (!name){ 2439 name = default_hfp_ag_service_name; 2440 } 2441 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2442 2443 /* 2444 * 0x01 – Ability to reject a call 2445 * 0x00 – No ability to reject a call 2446 */ 2447 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2448 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2449 2450 // Construct SupportedFeatures for SDP bitmap: 2451 // 2452 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2453 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2454 // 2455 // Wide band speech (bit 5) requires Codec negotiation 2456 // 2457 uint16_t sdp_features = supported_features & 0x1f; 2458 if (wide_band_speech && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2459 sdp_features |= 1 << 5; 2460 } 2461 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2462 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2463 } 2464 2465 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2466 if (callback == NULL){ 2467 log_error("hfp_ag_register_packet_handler called with NULL callback"); 2468 return; 2469 } 2470 hfp_ag_callback = callback; 2471 hfp_set_ag_callback(callback); 2472 } 2473