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_connection->establish_audio_connection = 1; 557 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 558 return 1; 559 560 case HFP_CMD_AG_SEND_COMMON_CODEC: 561 hfp_connection->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC; 562 hfp_connection->suggested_codec = hfp_ag_suggest_codec(hfp_connection); 563 hfp_ag_send_suggest_codec_cmd(hfp_connection->rfcomm_cid, hfp_connection->suggested_codec); 564 return 1; 565 566 case HFP_CMD_HF_CONFIRMED_CODEC: 567 if (hfp_connection->codec_confirmed != hfp_connection->suggested_codec){ 568 hfp_connection->codecs_state = HFP_CODECS_ERROR; 569 hfp_ag_send_error(hfp_connection->rfcomm_cid); 570 return 1; 571 } 572 hfp_connection->negotiated_codec = hfp_connection->codec_confirmed; 573 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 574 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 575 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 576 // now, pick link settings 577 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 578 #ifdef ENABLE_CC256X_ASSISTED_HFP 579 hfp_cc256x_prepare_for_sco(hfp_connection); 580 #endif 581 return 1; 582 default: 583 break; 584 } 585 return 0; 586 } 587 588 static void hfp_ag_slc_established(hfp_connection_t * hfp_connection){ 589 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 590 hfp_emit_slc_connection_event(hfp_connection, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 591 592 // if active call exist, set per-hfp_connection state active, too (when audio is on) 593 if (hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT){ 594 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 595 } 596 // if AG is ringing, also start ringing on the HF 597 if ((hfp_gsm_call_status() == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS) && 598 (hfp_gsm_callsetup_status() == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS)){ 599 hfp_ag_hf_start_ringing(hfp_connection); 600 } 601 } 602 603 static int hfp_ag_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 604 // log_info("hfp_ag_run_for_context_service_level_connection state %u, command %u", hfp_connection->state, hfp_connection->command); 605 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 606 int sent = 0; 607 switch(hfp_connection->command){ 608 case HFP_CMD_SUPPORTED_FEATURES: 609 switch(hfp_connection->state){ 610 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 611 case HFP_EXCHANGE_SUPPORTED_FEATURES: 612 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_codecs, &hfp_codecs_nr); 613 if (has_codec_negotiation_feature(hfp_connection)){ 614 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 615 } else { 616 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 617 } 618 hfp_ag_exchange_supported_features_cmd(hfp_connection->rfcomm_cid); 619 return 1; 620 default: 621 break; 622 } 623 break; 624 case HFP_CMD_AVAILABLE_CODECS: 625 sent = codecs_exchange_state_machine(hfp_connection); 626 if (hfp_connection->codecs_state == HFP_CODECS_RECEIVED_LIST){ 627 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 628 } 629 return sent; 630 631 case HFP_CMD_RETRIEVE_AG_INDICATORS: 632 if (hfp_connection->state == HFP_W4_RETRIEVE_INDICATORS) { 633 // HF requested AG Indicators and we did expect it 634 hfp_connection->send_ag_indicators_segment = 0; 635 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 636 // continue below in state switch 637 } 638 break; 639 640 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 641 if (hfp_connection->state != HFP_W4_RETRIEVE_INDICATORS_STATUS) break; 642 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 643 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 644 return 1; 645 646 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 647 if (hfp_connection->state != HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE) break; 648 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 649 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 650 } else if (has_hf_indicators_feature(hfp_connection)){ 651 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 652 } else { 653 hfp_ag_slc_established(hfp_connection); 654 } 655 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 656 return 1; 657 658 case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES: 659 if (hfp_connection->state != HFP_W4_RETRIEVE_CAN_HOLD_CALL) break; 660 if (has_hf_indicators_feature(hfp_connection)){ 661 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 662 } 663 hfp_ag_send_retrieve_can_hold_call_cmd(hfp_connection->rfcomm_cid); 664 if (!has_hf_indicators_feature(hfp_connection)){ 665 hfp_ag_slc_established(hfp_connection); 666 } 667 return 1; 668 669 case HFP_CMD_LIST_GENERIC_STATUS_INDICATORS: 670 if (hfp_connection->state != HFP_W4_LIST_GENERIC_STATUS_INDICATORS) break; 671 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 672 hfp_ag_send_list_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 673 return 1; 674 675 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS: 676 if (hfp_connection->state != HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS) break; 677 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 678 hfp_ag_send_retrieve_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 679 return 1; 680 681 case HFP_CMD_RETRIEVE_GENERIC_STATUS_INDICATORS_STATE: 682 if (hfp_connection->state != HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS) break; 683 hfp_ag_slc_established(hfp_connection); 684 hfp_ag_send_retrieve_initital_supported_generic_status_indicators_cmd(hfp_connection->rfcomm_cid); 685 return 1; 686 default: 687 break; 688 } 689 690 switch (hfp_connection->state){ 691 case HFP_RETRIEVE_INDICATORS: { 692 int next_segment = hfp_ag_send_retrieve_indicators_cmd_via_generator(hfp_connection->rfcomm_cid, hfp_connection, hfp_connection->send_ag_indicators_segment); 693 int num_segments = hfp_ag_indicators_cmd_generator_num_segments(hfp_connection); 694 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS next segment %u, num_segments %u", next_segment, num_segments); 695 if (next_segment < num_segments){ 696 // prepare sending of next segment 697 hfp_connection->send_ag_indicators_segment = next_segment; 698 log_info("HFP_CMD_RETRIEVE_AG_INDICATORS more. command %u, next seg %u", hfp_connection->command, next_segment); 699 } else { 700 // done, go to next state 701 hfp_connection->send_ag_indicators_segment = 0; 702 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 703 } 704 return 1; 705 } 706 default: 707 break; 708 } 709 return 0; 710 } 711 712 static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 713 int sent = codecs_exchange_state_machine(hfp_connection); 714 if (sent) return 1; 715 716 switch(hfp_connection->command){ 717 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 718 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 719 hfp_ag_send_activate_voice_recognition_cmd(hfp_connection->rfcomm_cid, hfp_connection->ag_activate_voice_recognition); 720 return 1; 721 case HFP_CMD_HF_ACTIVATE_VOICE_RECOGNITION: 722 if (get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)){ 723 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION, hfp_connection->ag_activate_voice_recognition); 724 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 725 hfp_ag_setup_audio_connection(hfp_connection); 726 } else { 727 hfp_ag_send_error(hfp_connection->rfcomm_cid); 728 } 729 return 1; 730 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 731 hfp_ag_send_change_in_band_ring_tone_setting_cmd(hfp_connection->rfcomm_cid); 732 return 1; 733 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME: 734 hfp_ag_send_report_network_operator_name_cmd(hfp_connection->rfcomm_cid, hfp_connection->network_operator); 735 return 1; 736 case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT: 737 if (hfp_connection->network_operator.format != 0){ 738 hfp_ag_send_error(hfp_connection->rfcomm_cid); 739 } else { 740 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 741 } 742 return 1; 743 case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE: 744 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 745 return 1; 746 case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR: 747 if (hfp_connection->extended_audio_gateway_error){ 748 hfp_connection->extended_audio_gateway_error = 0; 749 hfp_ag_send_report_extended_audio_gateway_error(hfp_connection->rfcomm_cid, hfp_connection->extended_audio_gateway_error_value); 750 return 1; 751 } 752 break; 753 case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE: 754 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 755 return 1; 756 default: 757 break; 758 } 759 return 0; 760 } 761 762 static int hfp_ag_run_for_audio_connection(hfp_connection_t * hfp_connection){ 763 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 764 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 765 766 767 if ((hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) && hfp_connection->release_audio_connection){ 768 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 769 hfp_connection->release_audio_connection = 0; 770 gap_disconnect(hfp_connection->sco_handle); 771 return 1; 772 } 773 774 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 775 776 // accept incoming audio connection (codec negotiation is not used) 777 if (hfp_connection->accept_sco){ 778 // notify about codec selection if not done already 779 if (hfp_connection->negotiated_codec == 0){ 780 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 781 } 782 // 783 bool incoming_eSCO = hfp_connection->accept_sco == 2; 784 hfp_connection->accept_sco = 0; 785 hfp_connection->state = HFP_W4_SCO_CONNECTED; 786 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 787 return 1; 788 } 789 790 // run codecs exchange 791 int sent = codecs_exchange_state_machine(hfp_connection); 792 if (sent) return 1; 793 794 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 795 if (hfp_connection->establish_audio_connection){ 796 hfp_connection->state = HFP_W4_SCO_CONNECTED; 797 hfp_connection->establish_audio_connection = 0; 798 hfp_setup_synchronous_connection(hfp_connection); 799 return 1; 800 } 801 return 0; 802 } 803 804 static hfp_connection_t * hfp_ag_context_for_timer(btstack_timer_source_t * ts){ 805 btstack_linked_list_iterator_t it; 806 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 807 808 while (btstack_linked_list_iterator_has_next(&it)){ 809 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 810 if ( & hfp_connection->hfp_timeout == ts) { 811 return hfp_connection; 812 } 813 } 814 return NULL; 815 } 816 817 static void hfp_timeout_handler(btstack_timer_source_t * timer){ 818 hfp_connection_t * hfp_connection = hfp_ag_context_for_timer(timer); 819 if (!hfp_connection) return; 820 821 log_info("HFP start ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 822 hfp_connection->ag_ring = 1; 823 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 824 825 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 826 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 827 828 hfp_ag_run_for_context(hfp_connection); 829 } 830 831 static void hfp_timeout_start(hfp_connection_t * hfp_connection){ 832 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 833 btstack_run_loop_set_timer_handler(& hfp_connection->hfp_timeout, hfp_timeout_handler); 834 btstack_run_loop_set_timer(& hfp_connection->hfp_timeout, 2000); // 2 seconds timeout 835 btstack_run_loop_add_timer(& hfp_connection->hfp_timeout); 836 } 837 838 static void hfp_timeout_stop(hfp_connection_t * hfp_connection){ 839 log_info("HFP stop ring timeout, con handle 0x%02x", hfp_connection->acl_handle); 840 btstack_run_loop_remove_timer(& hfp_connection->hfp_timeout); 841 } 842 843 // 844 // transitition implementations for hfp_ag_call_state_machine 845 // 846 847 static void hfp_ag_hf_start_ringing(hfp_connection_t * hfp_connection){ 848 if (use_in_band_tone()){ 849 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING; 850 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 851 } else { 852 hfp_timeout_start(hfp_connection); 853 hfp_connection->ag_ring = 1; 854 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 855 hfp_connection->call_state = HFP_CALL_RINGING; 856 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 857 } 858 } 859 860 static void hfp_ag_hf_stop_ringing(hfp_connection_t * hfp_connection){ 861 hfp_connection->ag_ring = 0; 862 hfp_connection->ag_send_clip = 0; 863 hfp_timeout_stop(hfp_connection); 864 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGINIG); 865 } 866 867 static void hfp_ag_trigger_incoming_call(void){ 868 int indicator_index = get_ag_indicator_index_for_name("callsetup"); 869 if (indicator_index < 0) return; 870 871 btstack_linked_list_iterator_t it; 872 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 873 while (btstack_linked_list_iterator_has_next(&it)){ 874 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 875 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 876 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 877 if (hfp_connection->call_state == HFP_CALL_IDLE){ 878 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 879 hfp_ag_hf_start_ringing(hfp_connection); 880 } 881 if (hfp_connection->call_state == HFP_CALL_ACTIVE){ 882 hfp_connection->call_state = HFP_CALL_W2_SEND_CALL_WAITING; 883 } 884 hfp_ag_run_for_context(hfp_connection); 885 } 886 } 887 888 static void hfp_ag_transfer_indicator(const char * name){ 889 int indicator_index = get_ag_indicator_index_for_name(name); 890 if (indicator_index < 0) return; 891 892 btstack_linked_list_iterator_t it; 893 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 894 while (btstack_linked_list_iterator_has_next(&it)){ 895 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 896 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 897 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 898 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 899 hfp_ag_run_for_context(hfp_connection); 900 } 901 } 902 903 static void hfp_ag_transfer_callsetup_state(void){ 904 hfp_ag_transfer_indicator("callsetup"); 905 } 906 907 static void hfp_ag_transfer_call_state(void){ 908 hfp_ag_transfer_indicator("call"); 909 } 910 911 static void hfp_ag_transfer_callheld_state(void){ 912 hfp_ag_transfer_indicator("callheld"); 913 } 914 915 static void hfp_ag_hf_accept_call(hfp_connection_t * source){ 916 917 int call_indicator_index = get_ag_indicator_index_for_name("call"); 918 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 919 920 btstack_linked_list_iterator_t it; 921 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 922 while (btstack_linked_list_iterator_has_next(&it)){ 923 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 924 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 925 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 926 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 927 928 hfp_ag_hf_stop_ringing(hfp_connection); 929 if (hfp_connection == source){ 930 931 if (use_in_band_tone()){ 932 hfp_connection->call_state = HFP_CALL_ACTIVE; 933 } else { 934 hfp_connection->call_state = HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE; 935 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 936 } 937 938 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 939 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 940 941 } else { 942 hfp_connection->call_state = HFP_CALL_IDLE; 943 } 944 hfp_ag_run_for_context(hfp_connection); 945 } 946 } 947 948 static void hfp_ag_ag_accept_call(void){ 949 950 int call_indicator_index = get_ag_indicator_index_for_name("call"); 951 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 952 953 btstack_linked_list_iterator_t it; 954 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 955 while (btstack_linked_list_iterator_has_next(&it)){ 956 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 957 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 958 if (hfp_connection->call_state != HFP_CALL_RINGING) continue; 959 960 hfp_ag_hf_stop_ringing(hfp_connection); 961 hfp_connection->call_state = HFP_CALL_TRIGGER_AUDIO_CONNECTION; 962 963 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 964 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 965 966 hfp_ag_run_for_context(hfp_connection); 967 break; // only single 968 } 969 } 970 971 static void hfp_ag_trigger_reject_call(void){ 972 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 973 btstack_linked_list_iterator_t it; 974 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 975 while (btstack_linked_list_iterator_has_next(&it)){ 976 hfp_connection_t * connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 977 if (connection->local_role != HFP_ROLE_AG) continue; 978 if ((connection->call_state != HFP_CALL_RINGING) && 979 (connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 980 hfp_ag_hf_stop_ringing(connection); 981 connection->ag_indicators_status_update_bitmap = store_bit(connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 982 connection->call_state = HFP_CALL_IDLE; 983 hfp_ag_run_for_context(connection); 984 } 985 } 986 987 static void hfp_ag_trigger_terminate_call(void){ 988 int call_indicator_index = get_ag_indicator_index_for_name("call"); 989 990 btstack_linked_list_iterator_t it; 991 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 992 while (btstack_linked_list_iterator_has_next(&it)){ 993 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 994 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 995 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 996 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 997 hfp_connection->call_state = HFP_CALL_IDLE; 998 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 999 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1000 hfp_connection->release_audio_connection = 1; 1001 } 1002 hfp_ag_run_for_context(hfp_connection); 1003 } 1004 hfp_emit_simple_event(NULL, HFP_SUBEVENT_CALL_TERMINATED); 1005 } 1006 1007 static void hfp_ag_set_callsetup_indicator(void){ 1008 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1009 if (!indicator){ 1010 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1011 return; 1012 }; 1013 indicator->status = hfp_gsm_callsetup_status(); 1014 } 1015 1016 static void hfp_ag_set_callheld_indicator(void){ 1017 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1018 if (!indicator){ 1019 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1020 return; 1021 }; 1022 indicator->status = hfp_gsm_callheld_status(); 1023 } 1024 1025 static void hfp_ag_set_call_indicator(void){ 1026 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1027 if (!indicator){ 1028 log_error("hfp_ag_set_call_state: call indicator is missing"); 1029 return; 1030 }; 1031 indicator->status = hfp_gsm_call_status(); 1032 } 1033 1034 static void hfp_ag_stop_ringing(void){ 1035 btstack_linked_list_iterator_t it; 1036 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1037 while (btstack_linked_list_iterator_has_next(&it)){ 1038 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1039 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1040 if ((hfp_connection->call_state != HFP_CALL_RINGING) && 1041 (hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING)) continue; 1042 hfp_ag_hf_stop_ringing(hfp_connection); 1043 } 1044 } 1045 1046 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1047 btstack_linked_list_iterator_t it; 1048 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1049 while (btstack_linked_list_iterator_has_next(&it)){ 1050 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1051 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1052 if (hfp_connection->call_state == call_state) return hfp_connection; 1053 } 1054 return NULL; 1055 } 1056 1057 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1058 btstack_linked_list_iterator_t it; 1059 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1060 while (btstack_linked_list_iterator_has_next(&it)){ 1061 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1062 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 1063 hfp_connection->send_response_and_hold_status = state + 1; 1064 } 1065 } 1066 1067 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1068 int indicator_index; 1069 switch (hfp_connection->call_state){ 1070 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1071 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1072 // we got event: audio hfp_connection established 1073 hfp_timeout_start(hfp_connection); 1074 hfp_connection->ag_ring = 1; 1075 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1076 hfp_connection->call_state = HFP_CALL_RINGING; 1077 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1078 break; 1079 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1080 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1081 // we got event: audio hfp_connection established 1082 hfp_connection->call_state = HFP_CALL_ACTIVE; 1083 break; 1084 case HFP_CALL_W2_SEND_CALL_WAITING: 1085 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1086 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1087 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1088 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1089 break; 1090 default: 1091 break; 1092 } 1093 return 0; 1094 } 1095 1096 // functions extracted from hfp_ag_call_sm below 1097 static void hfp_ag_handle_reject_incoming_call(void){ 1098 hfp_connection_t * hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1099 if (!hfp_connection){ 1100 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1101 return; 1102 } 1103 1104 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_REJECTED, 0, 0, NULL); 1105 hfp_connection->call_state = HFP_CALL_IDLE; 1106 hfp_connection->send_error = 1; 1107 hfp_ag_run_for_context(hfp_connection); 1108 } 1109 1110 // hfp_connection is used to identify originating HF 1111 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1112 int indicator_index; 1113 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1114 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1115 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1116 1117 switch (event){ 1118 case HFP_AG_INCOMING_CALL: 1119 switch (hfp_gsm_call_status()){ 1120 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1121 switch (hfp_gsm_callsetup_status()){ 1122 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1123 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1124 hfp_ag_set_callsetup_indicator(); 1125 hfp_ag_trigger_incoming_call(); 1126 log_info("AG rings"); 1127 break; 1128 default: 1129 break; 1130 } 1131 break; 1132 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1133 switch (hfp_gsm_callsetup_status()){ 1134 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1135 hfp_gsm_handler(HFP_AG_INCOMING_CALL, 0, 0, NULL); 1136 hfp_ag_set_callsetup_indicator(); 1137 hfp_ag_trigger_incoming_call(); 1138 log_info("AG call waiting"); 1139 break; 1140 default: 1141 break; 1142 } 1143 break; 1144 default: 1145 break; 1146 } 1147 break; 1148 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1149 switch (hfp_gsm_call_status()){ 1150 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1151 switch (hfp_gsm_callsetup_status()){ 1152 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1153 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1154 hfp_ag_set_call_indicator(); 1155 hfp_ag_set_callsetup_indicator(); 1156 hfp_ag_ag_accept_call(); 1157 log_info("AG answers call, accept call by GSM"); 1158 break; 1159 default: 1160 break; 1161 } 1162 break; 1163 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1164 switch (hfp_gsm_callsetup_status()){ 1165 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1166 log_info("AG: current call is placed on hold, incoming call gets active"); 1167 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, 0, 0, NULL); 1168 hfp_ag_set_callsetup_indicator(); 1169 hfp_ag_set_callheld_indicator(); 1170 hfp_ag_transfer_callsetup_state(); 1171 hfp_ag_transfer_callheld_state(); 1172 break; 1173 default: 1174 break; 1175 } 1176 break; 1177 default: 1178 break; 1179 } 1180 break; 1181 1182 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1183 switch (hfp_gsm_call_status()){ 1184 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1185 switch (hfp_gsm_callheld_status()){ 1186 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1187 log_info("AG: joining held call with active call"); 1188 hfp_gsm_handler(HFP_AG_HELD_CALL_JOINED_BY_AG, 0, 0, NULL); 1189 hfp_ag_set_callheld_indicator(); 1190 hfp_ag_transfer_callheld_state(); 1191 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1192 break; 1193 default: 1194 break; 1195 } 1196 break; 1197 default: 1198 break; 1199 } 1200 break; 1201 1202 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1203 switch (hfp_gsm_call_status()){ 1204 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1205 switch (hfp_gsm_callsetup_status()){ 1206 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1207 hfp_gsm_handler(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, 0, 0, NULL); 1208 hfp_ag_set_callsetup_indicator(); 1209 hfp_ag_set_call_indicator(); 1210 hfp_ag_hf_accept_call(hfp_connection); 1211 hfp_connection->ok_pending = 1; 1212 log_info("HF answers call, accept call by GSM"); 1213 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1214 break; 1215 default: 1216 break; 1217 } 1218 break; 1219 default: 1220 break; 1221 } 1222 break; 1223 1224 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1225 switch (hfp_gsm_call_status()){ 1226 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1227 switch (hfp_gsm_callsetup_status()){ 1228 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1229 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, 0, 0, NULL); 1230 hfp_ag_response_and_hold_active = 1; 1231 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1232 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1233 // as with regualr call 1234 hfp_ag_set_call_indicator(); 1235 hfp_ag_set_callsetup_indicator(); 1236 hfp_ag_ag_accept_call(); 1237 log_info("AG response and hold - hold by AG"); 1238 break; 1239 default: 1240 break; 1241 } 1242 break; 1243 default: 1244 break; 1245 } 1246 break; 1247 1248 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1249 switch (hfp_gsm_call_status()){ 1250 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1251 switch (hfp_gsm_callsetup_status()){ 1252 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1253 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, 0, 0, NULL); 1254 hfp_ag_response_and_hold_active = 1; 1255 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1256 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1257 // as with regualr call 1258 hfp_ag_set_call_indicator(); 1259 hfp_ag_set_callsetup_indicator(); 1260 hfp_ag_hf_accept_call(hfp_connection); 1261 log_info("AG response and hold - hold by HF"); 1262 break; 1263 default: 1264 break; 1265 } 1266 break; 1267 default: 1268 break; 1269 } 1270 break; 1271 1272 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1273 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1274 if (!hfp_ag_response_and_hold_active) break; 1275 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1276 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, 0, 0, NULL); 1277 hfp_ag_response_and_hold_active = 0; 1278 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1279 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1280 log_info("Held Call accepted and active"); 1281 break; 1282 1283 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1284 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1285 if (!hfp_ag_response_and_hold_active) break; 1286 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1287 hfp_gsm_handler(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, 0, 0, NULL); 1288 hfp_ag_response_and_hold_active = 0; 1289 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1290 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1291 // from terminate by ag 1292 hfp_ag_set_call_indicator(); 1293 hfp_ag_trigger_terminate_call(); 1294 break; 1295 1296 case HFP_AG_TERMINATE_CALL_BY_HF: 1297 switch (hfp_gsm_call_status()){ 1298 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1299 switch (hfp_gsm_callsetup_status()){ 1300 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1301 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1302 hfp_ag_set_callsetup_indicator(); 1303 hfp_ag_transfer_callsetup_state(); 1304 hfp_ag_trigger_reject_call(); 1305 log_info("HF Rejected Incoming call, AG terminate call"); 1306 break; 1307 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1308 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1309 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1310 hfp_ag_set_callsetup_indicator(); 1311 hfp_ag_transfer_callsetup_state(); 1312 log_info("AG terminate outgoing call process"); 1313 break; 1314 default: 1315 break; 1316 } 1317 break; 1318 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1319 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_HF, 0, 0, NULL); 1320 hfp_ag_set_callsetup_indicator(); 1321 hfp_ag_set_call_indicator(); 1322 hfp_ag_trigger_terminate_call(); 1323 log_info("AG terminate call"); 1324 break; 1325 default: 1326 break; 1327 } 1328 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1329 break; 1330 1331 case HFP_AG_TERMINATE_CALL_BY_AG: 1332 switch (hfp_gsm_call_status()){ 1333 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1334 switch (hfp_gsm_callsetup_status()){ 1335 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1336 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1337 hfp_ag_set_callsetup_indicator(); 1338 hfp_ag_trigger_reject_call(); 1339 log_info("AG Rejected Incoming call, AG terminate call"); 1340 break; 1341 default: 1342 break; 1343 } 1344 break; 1345 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1346 hfp_gsm_handler(HFP_AG_TERMINATE_CALL_BY_AG, 0, 0, NULL); 1347 hfp_ag_set_callsetup_indicator(); 1348 hfp_ag_set_call_indicator(); 1349 hfp_ag_trigger_terminate_call(); 1350 log_info("AG terminate call"); 1351 break; 1352 default: 1353 break; 1354 } 1355 break; 1356 case HFP_AG_CALL_DROPPED: 1357 switch (hfp_gsm_call_status()){ 1358 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1359 switch (hfp_gsm_callsetup_status()){ 1360 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1361 hfp_ag_stop_ringing(); 1362 log_info("Incoming call interrupted"); 1363 break; 1364 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1365 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1366 log_info("Outgoing call interrupted\n"); 1367 log_info("AG notify call dropped\n"); 1368 break; 1369 default: 1370 break; 1371 } 1372 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1373 hfp_ag_set_callsetup_indicator(); 1374 hfp_ag_transfer_callsetup_state(); 1375 hfp_ag_trigger_terminate_call(); 1376 break; 1377 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1378 if (hfp_ag_response_and_hold_active) { 1379 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1380 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1381 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1382 } 1383 hfp_gsm_handler(HFP_AG_CALL_DROPPED, 0, 0, NULL); 1384 hfp_ag_set_callsetup_indicator(); 1385 hfp_ag_set_call_indicator(); 1386 hfp_ag_trigger_terminate_call(); 1387 log_info("AG notify call dropped"); 1388 break; 1389 default: 1390 break; 1391 } 1392 break; 1393 1394 case HFP_AG_OUTGOING_CALL_INITIATED: 1395 // directly reject call if number of free slots is exceeded 1396 if (!hfp_gsm_call_possible()){ 1397 hfp_connection->send_error = 1; 1398 hfp_ag_run_for_context(hfp_connection); 1399 break; 1400 } 1401 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_INITIATED, 0, 0, (const char *) &hfp_connection->line_buffer[3]); 1402 1403 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1404 1405 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1406 break; 1407 1408 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1409 // directly reject call if number of free slots is exceeded 1410 if (!hfp_gsm_call_possible()){ 1411 hfp_connection->send_error = 1; 1412 hfp_ag_run_for_context(hfp_connection); 1413 break; 1414 } 1415 1416 hfp_gsm_handler(HFP_AG_OUTGOING_REDIAL_INITIATED, 0, 0, NULL); 1417 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1418 1419 log_info("Redial last number"); 1420 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1421 1422 if (strlen(last_dialed_number) > 0){ 1423 log_info("Last number exists: accept call"); 1424 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1425 } else { 1426 log_info("log_infoLast number missing: reject call"); 1427 hfp_ag_handle_reject_incoming_call(); 1428 } 1429 break; 1430 } 1431 case HFP_AG_OUTGOING_CALL_REJECTED: 1432 hfp_ag_handle_reject_incoming_call(); 1433 break; 1434 1435 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1436 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1437 if (!hfp_connection){ 1438 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1439 break; 1440 } 1441 1442 hfp_connection->ok_pending = 1; 1443 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1444 1445 // trigger callsetup to be 1446 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1447 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ACCEPTED, 0, 0, NULL); 1448 1449 hfp_ag_set_callsetup_indicator(); 1450 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1451 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1452 1453 // put current call on hold if active 1454 if (put_call_on_hold){ 1455 log_info("AG putting current call on hold for new outgoing calllog_info"); 1456 hfp_ag_set_callheld_indicator(); 1457 indicator_index = get_ag_indicator_index_for_name("callheld"); 1458 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1459 } 1460 1461 // start audio if needed 1462 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1463 break; 1464 } 1465 case HFP_AG_OUTGOING_CALL_RINGING: 1466 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1467 if (!hfp_connection){ 1468 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1469 break; 1470 } 1471 1472 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_RINGING, 0, 0, NULL); 1473 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1474 hfp_ag_set_callsetup_indicator(); 1475 hfp_ag_transfer_callsetup_state(); 1476 break; 1477 1478 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1479 // get outgoing call 1480 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1481 if (!hfp_connection){ 1482 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1483 } 1484 if (!hfp_connection){ 1485 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1486 break; 1487 } 1488 1489 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1490 hfp_gsm_handler(HFP_AG_OUTGOING_CALL_ESTABLISHED, 0, 0, NULL); 1491 hfp_connection->call_state = HFP_CALL_ACTIVE; 1492 hfp_ag_set_callsetup_indicator(); 1493 hfp_ag_set_call_indicator(); 1494 hfp_ag_transfer_call_state(); 1495 hfp_ag_transfer_callsetup_state(); 1496 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1497 hfp_ag_set_callheld_indicator(); 1498 hfp_ag_transfer_callheld_state(); 1499 } 1500 break; 1501 } 1502 1503 case HFP_AG_CALL_HOLD_USER_BUSY: 1504 hfp_gsm_handler(HFP_AG_CALL_HOLD_USER_BUSY, 0, 0, NULL); 1505 hfp_ag_set_callsetup_indicator(); 1506 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1507 hfp_connection->call_state = HFP_CALL_ACTIVE; 1508 log_info("AG: Call Waiting, User Busy"); 1509 break; 1510 1511 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1512 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1513 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1514 1515 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1516 if (call_held || call_setup_in_progress){ 1517 hfp_gsm_handler(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 1518 0, NULL); 1519 1520 } 1521 1522 if (call_setup_in_progress){ 1523 log_info("AG: Call Dropped, Accept new call"); 1524 hfp_ag_set_callsetup_indicator(); 1525 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1526 } else { 1527 log_info("AG: Call Dropped, Resume held call"); 1528 } 1529 if (call_held){ 1530 hfp_ag_set_callheld_indicator(); 1531 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1532 } 1533 1534 hfp_connection->call_state = HFP_CALL_ACTIVE; 1535 break; 1536 } 1537 1538 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1539 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1540 // only update if callsetup changed 1541 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1542 hfp_gsm_handler(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index, 0, 1543 NULL); 1544 1545 if (call_setup_in_progress){ 1546 log_info("AG: Call on Hold, Accept new call"); 1547 hfp_ag_set_callsetup_indicator(); 1548 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1549 } else { 1550 log_info("AG: Swap calls"); 1551 } 1552 1553 hfp_ag_set_callheld_indicator(); 1554 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1555 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1556 hfp_connection->call_state = HFP_CALL_ACTIVE; 1557 break; 1558 } 1559 1560 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1561 // Adds a held call to the conversation. 1562 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1563 log_info("AG: Join 3-way-call"); 1564 hfp_gsm_handler(HFP_AG_CALL_HOLD_ADD_HELD_CALL, 0, 0, NULL); 1565 hfp_ag_set_callheld_indicator(); 1566 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1567 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1568 } 1569 hfp_connection->call_state = HFP_CALL_ACTIVE; 1570 break; 1571 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1572 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1573 hfp_gsm_handler(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, 0, 0, NULL); 1574 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1575 hfp_ag_set_call_indicator(); 1576 hfp_ag_set_callheld_indicator(); 1577 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1578 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1579 hfp_connection->call_state = HFP_CALL_IDLE; 1580 break; 1581 1582 default: 1583 break; 1584 } 1585 1586 1587 } 1588 1589 1590 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1591 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1592 if (!active_call) return; 1593 1594 int idx = active_call->index; 1595 hfp_enhanced_call_dir_t dir = active_call->direction; 1596 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1597 hfp_enhanced_call_mode_t mode = active_call->mode; 1598 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1599 uint8_t type = active_call->clip_type; 1600 char * number = active_call->clip_number; 1601 1602 char buffer[100]; 1603 // TODO: check length of a buffer, to fit the MTU 1604 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1605 if (number){ 1606 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1607 } 1608 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1609 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, 1610 mode, mpty, type, number); 1611 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1612 } 1613 1614 1615 // sends pending command, returns if command was sent 1616 static int hfp_ag_send_commands(hfp_connection_t *hfp_connection){ 1617 1618 if (hfp_connection->send_status_of_current_calls){ 1619 hfp_connection->ok_pending = 0; 1620 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1621 hfp_connection->next_call_index++; 1622 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1623 return 1; 1624 } else { 1625 // 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 1626 hfp_connection->next_call_index = 0; 1627 hfp_connection->ok_pending = 1; 1628 hfp_connection->send_status_of_current_calls = 0; 1629 } 1630 } 1631 1632 if (hfp_connection->ag_notify_incoming_call_waiting){ 1633 hfp_connection->ag_notify_incoming_call_waiting = 0; 1634 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1635 return 1; 1636 } 1637 1638 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1639 hfp_connection->ok_pending = 0; 1640 hfp_connection->send_error = 0; 1641 hfp_connection->command = HFP_CMD_NONE; 1642 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1643 return 1; 1644 } 1645 1646 if (hfp_connection->send_error){ 1647 hfp_connection->send_error = 0; 1648 hfp_connection->command = HFP_CMD_NONE; 1649 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1650 return 1; 1651 } 1652 1653 // note: before update AG indicators and ok_pending 1654 if (hfp_connection->send_response_and_hold_status){ 1655 int status = hfp_connection->send_response_and_hold_status - 1; 1656 hfp_connection->send_response_and_hold_status = 0; 1657 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1658 return 1; 1659 } 1660 1661 if (hfp_connection->ok_pending){ 1662 hfp_connection->ok_pending = 0; 1663 hfp_connection->command = HFP_CMD_NONE; 1664 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1665 return 1; 1666 } 1667 1668 // update AG indicators 1669 if (hfp_connection->ag_indicators_status_update_bitmap){ 1670 int i; 1671 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1672 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1673 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1674 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1675 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1676 break; 1677 } 1678 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1679 return 1; 1680 } 1681 } 1682 } 1683 1684 if (hfp_connection->ag_ring){ 1685 hfp_connection->ag_ring = 0; 1686 hfp_connection->command = HFP_CMD_NONE; 1687 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1688 return 1; 1689 } 1690 1691 if (hfp_connection->ag_send_clip){ 1692 hfp_connection->ag_send_clip = 0; 1693 hfp_connection->command = HFP_CMD_NONE; 1694 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1695 return 1; 1696 } 1697 1698 if (hfp_connection->send_phone_number_for_voice_tag){ 1699 hfp_connection->send_phone_number_for_voice_tag = 0; 1700 hfp_connection->command = HFP_CMD_NONE; 1701 hfp_connection->ok_pending = 1; 1702 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1703 return 1; 1704 } 1705 1706 if (hfp_connection->send_subscriber_number){ 1707 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1708 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1709 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1710 } else { 1711 hfp_connection->send_subscriber_number = 0; 1712 hfp_connection->next_subscriber_number_to_send = 0; 1713 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1714 } 1715 hfp_connection->command = HFP_CMD_NONE; 1716 return 1; 1717 } 1718 1719 if (hfp_connection->send_microphone_gain){ 1720 hfp_connection->send_microphone_gain = 0; 1721 hfp_connection->command = HFP_CMD_NONE; 1722 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1723 return 1; 1724 } 1725 1726 if (hfp_connection->send_speaker_gain){ 1727 hfp_connection->send_speaker_gain = 0; 1728 hfp_connection->command = HFP_CMD_NONE; 1729 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1730 return 1; 1731 } 1732 1733 if (hfp_connection->send_ag_status_indicators){ 1734 hfp_connection->send_ag_status_indicators = 0; 1735 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1736 return 1; 1737 } 1738 1739 return 0; 1740 } 1741 1742 static void hfp_ag_run_for_context(hfp_connection_t *hfp_connection){ 1743 1744 btstack_assert(hfp_connection != NULL); 1745 btstack_assert(hfp_connection->local_role == HFP_ROLE_AG); 1746 1747 // during SDP query, RFCOMM CID is not set 1748 if (hfp_connection->rfcomm_cid == 0) return; 1749 1750 // assert command could be sent 1751 if (hci_can_send_command_packet_now() == 0) return; 1752 1753 #ifdef ENABLE_CC256X_ASSISTED_HFP 1754 // WBS Disassociate 1755 if (hfp_connection->cc256x_send_wbs_disassociate){ 1756 hfp_connection->cc256x_send_wbs_disassociate = false; 1757 hci_send_cmd(&hci_ti_wbs_disassociate); 1758 return; 1759 } 1760 // Write Codec Config 1761 if (hfp_connection->cc256x_send_write_codec_config){ 1762 hfp_connection->cc256x_send_write_codec_config = false; 1763 hfp_cc256x_write_codec_config(hfp_connection); 1764 return; 1765 } 1766 // WBS Associate 1767 if (hfp_connection->cc256x_send_wbs_associate){ 1768 hfp_connection->cc256x_send_wbs_associate = false; 1769 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 1770 return; 1771 } 1772 #endif 1773 #ifdef ENABLE_BCM_PCM_WBS 1774 // Enable WBS 1775 if (hfp_connection->bcm_send_enable_wbs){ 1776 hfp_connection->bcm_send_enable_wbs = false; 1777 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 1778 return; 1779 } 1780 // Write I2S/PCM params 1781 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 1782 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 1783 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 1784 return; 1785 } 1786 // Disable WBS 1787 if (hfp_connection->bcm_send_disable_wbs){ 1788 hfp_connection->bcm_send_disable_wbs = false; 1789 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 1790 return; 1791 } 1792 #endif 1793 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 1794 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 1795 hfp_finalize_connection_context(hfp_connection); 1796 return; 1797 } 1798 #endif 1799 1800 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1801 log_info("hfp_ag_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1802 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1803 return; 1804 } 1805 1806 int cmd_sent = hfp_ag_send_commands(hfp_connection); 1807 1808 if (!cmd_sent){ 1809 cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1810 } 1811 1812 if (!cmd_sent){ 1813 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1814 } 1815 1816 if (!cmd_sent){ 1817 cmd_sent = call_setup_state_machine(hfp_connection); 1818 } 1819 1820 // trigger codec exchange (must be before hfp_ag_run_for_audio_connection) 1821 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && hfp_connection->trigger_codec_exchange){ 1822 log_info("trigger codec, command %u, codec state %u", hfp_connection->command, hfp_connection->codecs_state); 1823 switch (hfp_connection->codecs_state){ 1824 case HFP_CODECS_IDLE: 1825 case HFP_CODECS_RECEIVED_LIST: 1826 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1827 case HFP_CODECS_ERROR: 1828 hfp_connection->trigger_codec_exchange = 0; 1829 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1830 break; 1831 default: 1832 break; 1833 } 1834 } 1835 1836 if (!cmd_sent){ 1837 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1838 } 1839 1840 1841 // disconnect 1842 if (!cmd_sent && (hfp_connection->command == HFP_CMD_NONE) && (hfp_connection->state == HFP_W2_DISCONNECT_RFCOMM)){ 1843 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1844 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1845 } 1846 1847 if (cmd_sent){ 1848 hfp_connection->command = HFP_CMD_NONE; 1849 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1850 } 1851 } 1852 1853 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1854 int i; 1855 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1856 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1857 if (indicator->uuid == number){ 1858 return indicator; 1859 } 1860 } 1861 return NULL; 1862 } 1863 1864 static int hfp_parser_is_end_of_line(uint8_t byte){ 1865 return (byte == '\n') || (byte == '\r'); 1866 } 1867 1868 static void hfp_ag_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1869 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1870 1871 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1872 if (size < 1) return; 1873 1874 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1875 if (!hfp_connection) return; 1876 1877 hfp_log_rfcomm_message("HFP_AG_RX", packet, size); 1878 #ifdef ENABLE_HFP_AT_MESSAGES 1879 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1880 #endif 1881 1882 // process messages byte-wise 1883 int pos; 1884 for (pos = 0; pos < size ; pos++){ 1885 hfp_parse(hfp_connection, packet[pos], 0); 1886 1887 // parse until end of line 1888 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1889 1890 hfp_generic_status_indicator_t * indicator; 1891 switch(hfp_connection->command){ 1892 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1893 if (hfp_ag_response_and_hold_active){ 1894 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1895 } 1896 hfp_connection->ok_pending = 1; 1897 break; 1898 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1899 switch(hfp_connection->ag_response_and_hold_action){ 1900 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1901 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1902 break; 1903 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1904 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1905 break; 1906 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1907 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1908 break; 1909 default: 1910 break; 1911 } 1912 hfp_connection->ok_pending = 1; 1913 break; 1914 case HFP_CMD_HF_INDICATOR_STATUS: 1915 hfp_connection->command = HFP_CMD_NONE; 1916 // find indicator by assigned number 1917 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1918 if (!indicator){ 1919 hfp_connection->send_error = 1; 1920 break; 1921 } 1922 switch (indicator->uuid){ 1923 case 1: // enhanced security 1924 if (hfp_connection->parser_indicator_value > 1) { 1925 hfp_connection->send_error = 1; 1926 return; 1927 } 1928 log_info("HF Indicator 'enhanced security' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1929 break; 1930 case 2: // battery level 1931 if (hfp_connection->parser_indicator_value > 100){ 1932 hfp_connection->send_error = 1; 1933 return; 1934 } 1935 log_info("HF Indicator 'battery' set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1936 break; 1937 default: 1938 log_info("HF Indicator unknown set to %u", (unsigned int) hfp_connection->parser_indicator_value); 1939 break; 1940 } 1941 hfp_connection->ok_pending = 1; 1942 break; 1943 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1944 // expected by SLC state machine 1945 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1946 hfp_connection->send_ag_indicators_segment = 0; 1947 hfp_connection->send_ag_status_indicators = 1; 1948 break; 1949 case HFP_CMD_LIST_CURRENT_CALLS: 1950 hfp_connection->command = HFP_CMD_NONE; 1951 hfp_connection->next_call_index = 0; 1952 hfp_connection->send_status_of_current_calls = 1; 1953 break; 1954 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1955 if (subscriber_numbers_count == 0){ 1956 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1957 break; 1958 } 1959 hfp_connection->next_subscriber_number_to_send = 0; 1960 hfp_connection->send_subscriber_number = 1; 1961 break; 1962 case HFP_CMD_TRANSMIT_DTMF_CODES: 1963 { 1964 hfp_connection->command = HFP_CMD_NONE; 1965 char buffer[2]; 1966 buffer[0] = (char) hfp_connection->ag_dtmf_code; 1967 buffer[1] = 0; 1968 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 1969 break; 1970 } 1971 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1972 hfp_connection->command = HFP_CMD_NONE; 1973 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1974 break; 1975 case HFP_CMD_TURN_OFF_EC_AND_NR: 1976 hfp_connection->command = HFP_CMD_NONE; 1977 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1978 hfp_connection->ok_pending = 1; 1979 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1980 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1981 } else { 1982 hfp_connection->send_error = 1; 1983 } 1984 break; 1985 case HFP_CMD_CALL_ANSWERED: 1986 hfp_connection->command = HFP_CMD_NONE; 1987 log_info("HFP: ATA"); 1988 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1989 break; 1990 case HFP_CMD_HANG_UP_CALL: 1991 hfp_connection->command = HFP_CMD_NONE; 1992 hfp_connection->ok_pending = 1; 1993 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1994 break; 1995 case HFP_CMD_CALL_HOLD: { 1996 hfp_connection->command = HFP_CMD_NONE; 1997 hfp_connection->ok_pending = 1; 1998 1999 switch (hfp_connection->ag_call_hold_action){ 2000 case 0: 2001 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 2002 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 2003 break; 2004 case 1: 2005 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 2006 // Where both a held and a waiting call exist, the above procedures shall apply to the 2007 // waiting call (i.e., not to the held call) in conflicting situation. 2008 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2009 break; 2010 case 2: 2011 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 2012 // Where both a held and a waiting call exist, the above procedures shall apply to the 2013 // waiting call (i.e., not to the held call) in conflicting situation. 2014 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 2015 break; 2016 case 3: 2017 // Adds a held call to the conversation. 2018 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 2019 break; 2020 case 4: 2021 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 2022 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 2023 break; 2024 default: 2025 break; 2026 } 2027 hfp_connection->call_index = 0; 2028 break; 2029 } 2030 case HFP_CMD_CALL_PHONE_NUMBER: 2031 hfp_connection->command = HFP_CMD_NONE; 2032 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 2033 break; 2034 case HFP_CMD_REDIAL_LAST_NUMBER: 2035 hfp_connection->command = HFP_CMD_NONE; 2036 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 2037 break; 2038 case HFP_CMD_ENABLE_CLIP: 2039 hfp_connection->command = HFP_CMD_NONE; 2040 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 2041 hfp_connection->ok_pending = 1; 2042 break; 2043 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 2044 hfp_connection->command = HFP_CMD_NONE; 2045 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 2046 hfp_connection->ok_pending = 1; 2047 break; 2048 case HFP_CMD_SET_SPEAKER_GAIN: 2049 hfp_connection->command = HFP_CMD_NONE; 2050 hfp_connection->ok_pending = 1; 2051 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 2052 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_connection->speaker_gain); 2053 break; 2054 case HFP_CMD_SET_MICROPHONE_GAIN: 2055 hfp_connection->command = HFP_CMD_NONE; 2056 hfp_connection->ok_pending = 1; 2057 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 2058 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_connection->microphone_gain); 2059 break; 2060 default: 2061 break; 2062 } 2063 } 2064 } 2065 2066 static void hfp_ag_run(void){ 2067 btstack_linked_list_iterator_t it; 2068 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2069 while (btstack_linked_list_iterator_has_next(&it)){ 2070 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2071 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2072 hfp_ag_run_for_context(hfp_connection); 2073 } 2074 } 2075 2076 static void hfp_ag_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2077 switch (packet_type){ 2078 case RFCOMM_DATA_PACKET: 2079 hfp_ag_handle_rfcomm_data(packet_type, channel, packet, size); 2080 break; 2081 case HCI_EVENT_PACKET: 2082 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2083 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2084 hfp_ag_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2085 return; 2086 } 2087 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2088 break; 2089 default: 2090 break; 2091 } 2092 2093 hfp_ag_run(); 2094 } 2095 2096 static void hfp_ag_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2097 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2098 hfp_ag_run(); 2099 } 2100 2101 void hfp_ag_init_codecs(int codecs_nr, const uint8_t * codecs){ 2102 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2103 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2104 return; 2105 } 2106 int i; 2107 hfp_codecs_nr = codecs_nr; 2108 for (i=0; i < codecs_nr; i++){ 2109 hfp_codecs[i] = codecs[i]; 2110 } 2111 } 2112 2113 void hfp_ag_init_supported_features(uint32_t supported_features){ 2114 hfp_supported_features = supported_features; 2115 } 2116 2117 void hfp_ag_init_ag_indicators(int ag_indicators_nr, const hfp_ag_indicator_t * ag_indicators){ 2118 hfp_ag_indicators_nr = ag_indicators_nr; 2119 (void)memcpy(hfp_ag_indicators, ag_indicators, 2120 ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2121 } 2122 2123 void hfp_ag_init_hf_indicators(int hf_indicators_nr, const hfp_generic_status_indicator_t * hf_indicators){ 2124 if (hf_indicators_nr > HFP_MAX_NUM_INDICATORS) return; 2125 hfp_generic_status_indicators_nr = hf_indicators_nr; 2126 (void)memcpy(hfp_generic_status_indicators, hf_indicators, 2127 hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2128 } 2129 2130 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2131 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2132 (void)memcpy(hfp_ag_call_hold_services, call_hold_services, 2133 call_hold_services_nr * sizeof(char *)); 2134 } 2135 2136 2137 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2138 2139 hfp_init(); 2140 hfp_ag_call_hold_services_nr = 0; 2141 hfp_ag_response_and_hold_active = 0; 2142 hfp_ag_indicators_nr = 0; 2143 hfp_codecs_nr = 0; 2144 hfp_supported_features = HFP_DEFAULT_AG_SUPPORTED_FEATURES; 2145 subscriber_numbers = NULL; 2146 subscriber_numbers_count = 0; 2147 2148 hfp_ag_hci_event_callback_registration.callback = &hfp_ag_hci_event_packet_handler; 2149 hci_add_event_handler(&hfp_ag_hci_event_callback_registration); 2150 2151 rfcomm_register_service(&hfp_ag_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 2152 2153 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 2154 hfp_set_ag_rfcomm_packet_handler(&hfp_ag_rfcomm_packet_handler); 2155 2156 hfp_gsm_init(); 2157 } 2158 2159 void hfp_ag_deinit(void){ 2160 hfp_deinit(); 2161 hfp_gsm_deinit(); 2162 (void) memset(&hfp_ag_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 2163 (void) memset(&hfp_ag_callback, 0, sizeof(btstack_packet_handler_t)); 2164 (void) memset(&hfp_ag_call_hold_services, 0, sizeof(hfp_ag_call_hold_services)); 2165 (void) memset(&hfp_ag_response_and_hold_state, 0, sizeof(hfp_response_and_hold_state_t)); 2166 } 2167 2168 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2169 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2170 } 2171 2172 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2173 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2174 if (!hfp_connection){ 2175 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2176 return; 2177 } 2178 hfp_release_service_level_connection(hfp_connection); 2179 hfp_ag_run_for_context(hfp_connection); 2180 } 2181 2182 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2183 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2184 if (!hfp_connection){ 2185 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2186 return; 2187 } 2188 hfp_connection->extended_audio_gateway_error = 0; 2189 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2190 return; 2191 } 2192 hfp_connection->extended_audio_gateway_error = error; 2193 hfp_ag_run_for_context(hfp_connection); 2194 } 2195 2196 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2197 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2198 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2199 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2200 2201 hfp_connection->establish_audio_connection = 1; 2202 if (!has_codec_negotiation_feature(hfp_connection)){ 2203 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2204 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2205 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2206 // now, pick link settings 2207 hfp_init_link_settings(hfp_connection, hfp_ag_esco_s4_supported(hfp_connection)); 2208 #ifdef ENABLE_CC256X_ASSISTED_HFP 2209 hfp_cc256x_prepare_for_sco(hfp_connection); 2210 #endif 2211 return; 2212 } 2213 2214 hfp_connection->trigger_codec_exchange = 1; 2215 } 2216 2217 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2218 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2219 if (!hfp_connection){ 2220 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2221 return; 2222 } 2223 hfp_connection->trigger_codec_exchange = 0; 2224 hfp_connection->establish_audio_connection = 0; 2225 hfp_ag_setup_audio_connection(hfp_connection); 2226 hfp_ag_run_for_context(hfp_connection); 2227 } 2228 2229 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2230 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2231 if (!hfp_connection){ 2232 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2233 return; 2234 } 2235 hfp_release_audio_connection(hfp_connection); 2236 hfp_ag_run_for_context(hfp_connection); 2237 } 2238 2239 /** 2240 * @brief Enable in-band ring tone 2241 */ 2242 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2243 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2244 return; 2245 } 2246 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2247 2248 btstack_linked_list_iterator_t it; 2249 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2250 while (btstack_linked_list_iterator_has_next(&it)){ 2251 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2252 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2253 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2254 hfp_ag_run_for_context(hfp_connection); 2255 } 2256 } 2257 2258 /** 2259 * @brief Called from GSM 2260 */ 2261 void hfp_ag_incoming_call(void){ 2262 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2263 } 2264 2265 /** 2266 * @brief number is stored. 2267 */ 2268 void hfp_ag_set_clip(uint8_t type, const char * number){ 2269 hfp_gsm_handler(HFP_AG_SET_CLIP, 0, type, number); 2270 } 2271 2272 void hfp_ag_call_dropped(void){ 2273 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2274 } 2275 2276 // call from AG UI 2277 void hfp_ag_answer_incoming_call(void){ 2278 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2279 } 2280 2281 void hfp_ag_join_held_call(void){ 2282 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2283 } 2284 2285 void hfp_ag_terminate_call(void){ 2286 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2287 } 2288 2289 void hfp_ag_outgoing_call_ringing(void){ 2290 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2291 } 2292 2293 void hfp_ag_outgoing_call_established(void){ 2294 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2295 } 2296 2297 void hfp_ag_outgoing_call_rejected(void){ 2298 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2299 } 2300 2301 void hfp_ag_outgoing_call_accepted(void){ 2302 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2303 } 2304 2305 void hfp_ag_hold_incoming_call(void){ 2306 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2307 } 2308 2309 void hfp_ag_accept_held_incoming_call(void) { 2310 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2311 } 2312 2313 void hfp_ag_reject_held_incoming_call(void){ 2314 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2315 } 2316 2317 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2318 int indicator_index = get_ag_indicator_index_for_name(name); 2319 if (indicator_index < 0) return; 2320 hfp_ag_indicators[indicator_index].status = value; 2321 2322 2323 btstack_linked_list_iterator_t it; 2324 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2325 while (btstack_linked_list_iterator_has_next(&it)){ 2326 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2327 if (hfp_connection->local_role != HFP_ROLE_AG) continue; 2328 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2329 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2330 continue; 2331 } 2332 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2333 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2334 hfp_ag_run_for_context(hfp_connection); 2335 } 2336 } 2337 2338 void hfp_ag_set_registration_status(int status){ 2339 hfp_ag_set_ag_indicator("service", status); 2340 } 2341 2342 void hfp_ag_set_signal_strength(int strength){ 2343 hfp_ag_set_ag_indicator("signal", strength); 2344 } 2345 2346 void hfp_ag_set_roaming_status(int status){ 2347 hfp_ag_set_ag_indicator("roam", status); 2348 } 2349 2350 void hfp_ag_set_battery_level(int level){ 2351 hfp_ag_set_ag_indicator("battchg", level); 2352 } 2353 2354 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2355 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2356 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2357 if (!hfp_connection){ 2358 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2359 return; 2360 } 2361 2362 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2363 log_info("AG cannot acivate voice recognition - not supported by HF"); 2364 return; 2365 } 2366 2367 if (activate){ 2368 hfp_ag_establish_audio_connection(acl_handle); 2369 } 2370 2371 hfp_connection->ag_activate_voice_recognition = activate; 2372 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2373 hfp_ag_run_for_context(hfp_connection); 2374 } 2375 2376 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2377 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2378 if (!hfp_connection){ 2379 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2380 return; 2381 } 2382 if (hfp_connection->microphone_gain != gain){ 2383 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2384 hfp_connection->microphone_gain = gain; 2385 hfp_connection->send_microphone_gain = 1; 2386 } 2387 hfp_ag_run_for_context(hfp_connection); 2388 } 2389 2390 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2391 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2392 if (!hfp_connection){ 2393 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2394 return; 2395 } 2396 if (hfp_connection->speaker_gain != gain){ 2397 hfp_connection->speaker_gain = gain; 2398 hfp_connection->send_speaker_gain = 1; 2399 } 2400 hfp_ag_run_for_context(hfp_connection); 2401 } 2402 2403 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2404 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2405 if (!hfp_connection){ 2406 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2407 return; 2408 } 2409 hfp_ag_set_clip(0, number); 2410 hfp_connection->send_phone_number_for_voice_tag = 1; 2411 } 2412 2413 void hfp_ag_reject_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2414 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2415 if (!hfp_connection){ 2416 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2417 return; 2418 } 2419 hfp_connection->send_error = 1; 2420 } 2421 2422 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2423 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2424 if (!hfp_connection){ 2425 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2426 return; 2427 } 2428 hfp_connection->ok_pending = 1; 2429 } 2430 2431 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2432 subscriber_numbers = numbers; 2433 subscriber_numbers_count = numbers_count; 2434 } 2435 2436 void hfp_ag_clear_last_dialed_number(void){ 2437 hfp_gsm_clear_last_dialed_number(); 2438 } 2439 2440 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2441 hfp_connection_t * hfp_connection = get_hfp_ag_connection_context_for_acl_handle(acl_handle); 2442 if (!hfp_connection){ 2443 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2444 return; 2445 } 2446 if (!hfp_connection->call_waiting_notification_enabled) return; 2447 2448 hfp_connection->ag_notify_incoming_call_waiting = 1; 2449 hfp_ag_run_for_context(hfp_connection); 2450 } 2451 2452 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){ 2453 if (!name){ 2454 name = default_hfp_ag_service_name; 2455 } 2456 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, rfcomm_channel_nr, name); 2457 2458 /* 2459 * 0x01 – Ability to reject a call 2460 * 0x00 – No ability to reject a call 2461 */ 2462 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0301); // Hands-Free Profile - Network 2463 de_add_number(service, DE_UINT, DE_SIZE_8, ability_to_reject_call); 2464 2465 // Construct SupportedFeatures for SDP bitmap: 2466 // 2467 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2468 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2469 // 2470 // Wide band speech (bit 5) requires Codec negotiation 2471 // 2472 uint16_t sdp_features = supported_features & 0x1f; 2473 if (wide_band_speech && (supported_features & (1 << HFP_AGSF_CODEC_NEGOTIATION))){ 2474 sdp_features |= 1 << 5; 2475 } 2476 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2477 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2478 } 2479 2480 void hfp_ag_register_packet_handler(btstack_packet_handler_t callback){ 2481 if (callback == NULL){ 2482 log_error("hfp_ag_register_packet_handler called with NULL callback"); 2483 return; 2484 } 2485 hfp_ag_callback = callback; 2486 hfp_set_ag_callback(callback); 2487 } 2488