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