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_ag_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_ag_callback = callback; 158 hfp_set_ag_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_connection, 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_connection, 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_connection, 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_emit_simple_event(uint8_t event_subtype){ 997 uint8_t event[3]; 998 event[0] = HCI_EVENT_HFP_META; 999 event[1] = sizeof(event) - 2; 1000 event[2] = event_subtype; 1001 if (!hfp_ag_callback) return; 1002 (*hfp_ag_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1003 } 1004 1005 static void hfp_ag_trigger_terminate_call(void){ 1006 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1007 1008 btstack_linked_list_iterator_t it; 1009 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1010 while (btstack_linked_list_iterator_has_next(&it)){ 1011 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1012 hfp_ag_establish_service_level_connection(hfp_connection->remote_addr); 1013 if (hfp_connection->call_state == HFP_CALL_IDLE) continue; 1014 hfp_connection->call_state = HFP_CALL_IDLE; 1015 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1016 hfp_connection->release_audio_connection = 1; 1017 hfp_run_for_context(hfp_connection); 1018 } 1019 hfp_ag_emit_simple_event(HFP_SUBEVENT_CALL_TERMINATED); 1020 } 1021 1022 static void hfp_ag_set_callsetup_indicator(void){ 1023 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callsetup"); 1024 if (!indicator){ 1025 log_error("hfp_ag_set_callsetup_indicator: callsetup indicator is missing"); 1026 return; 1027 }; 1028 indicator->status = hfp_gsm_callsetup_status(); 1029 } 1030 1031 static void hfp_ag_set_callheld_indicator(void){ 1032 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("callheld"); 1033 if (!indicator){ 1034 log_error("hfp_ag_set_callheld_state: callheld indicator is missing"); 1035 return; 1036 }; 1037 indicator->status = hfp_gsm_callheld_status(); 1038 } 1039 1040 static void hfp_ag_set_call_indicator(void){ 1041 hfp_ag_indicator_t * indicator = get_ag_indicator_for_name("call"); 1042 if (!indicator){ 1043 log_error("hfp_ag_set_call_state: call indicator is missing"); 1044 return; 1045 }; 1046 indicator->status = hfp_gsm_call_status(); 1047 } 1048 1049 static void hfp_ag_stop_ringing(void){ 1050 btstack_linked_list_iterator_t it; 1051 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1052 while (btstack_linked_list_iterator_has_next(&it)){ 1053 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1054 if (hfp_connection->call_state != HFP_CALL_RINGING && 1055 hfp_connection->call_state != HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING) continue; 1056 hfp_ag_hf_stop_ringing(hfp_connection); 1057 } 1058 } 1059 1060 static hfp_connection_t * hfp_ag_connection_for_call_state(hfp_call_state_t call_state){ 1061 btstack_linked_list_iterator_t it; 1062 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1063 while (btstack_linked_list_iterator_has_next(&it)){ 1064 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1065 if (hfp_connection->call_state == call_state) return hfp_connection; 1066 } 1067 return NULL; 1068 } 1069 1070 static void hfp_ag_send_response_and_hold_state(hfp_response_and_hold_state_t state){ 1071 btstack_linked_list_iterator_t it; 1072 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1073 while (btstack_linked_list_iterator_has_next(&it)){ 1074 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1075 hfp_connection->send_response_and_hold_status = state + 1; 1076 } 1077 } 1078 1079 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 1080 int indicator_index; 1081 switch (hfp_connection->call_state){ 1082 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_IN_BAND_RING: 1083 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1084 // we got event: audio hfp_connection established 1085 hfp_timeout_start(hfp_connection); 1086 hfp_connection->ag_ring = 1; 1087 hfp_connection->ag_send_clip = hfp_gsm_clip_type() && hfp_connection->clip_enabled; 1088 hfp_connection->call_state = HFP_CALL_RINGING; 1089 hfp_connection->call_state = HFP_CALL_RINGING; 1090 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGINIG); 1091 break; 1092 case HFP_CALL_W4_AUDIO_CONNECTION_FOR_ACTIVE: 1093 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 1094 // we got event: audio hfp_connection established 1095 hfp_connection->call_state = HFP_CALL_ACTIVE; 1096 break; 1097 case HFP_CALL_W2_SEND_CALL_WAITING: 1098 hfp_connection->call_state = HFP_CALL_W4_CHLD; 1099 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1100 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1101 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1102 break; 1103 default: 1104 break; 1105 } 1106 return 0; 1107 } 1108 // hfp_connection is used to identify originating HF 1109 static void hfp_ag_call_sm(hfp_ag_call_event_t event, hfp_connection_t * hfp_connection){ 1110 int indicator_index; 1111 int callsetup_indicator_index = get_ag_indicator_index_for_name("callsetup"); 1112 int callheld_indicator_index = get_ag_indicator_index_for_name("callheld"); 1113 int call_indicator_index = get_ag_indicator_index_for_name("call"); 1114 1115 //printf("hfp_ag_call_sm event %d \n", event); 1116 switch (event){ 1117 case HFP_AG_INCOMING_CALL: 1118 switch (hfp_gsm_call_status()){ 1119 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1120 switch (hfp_gsm_callsetup_status()){ 1121 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1122 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1123 hfp_ag_set_callsetup_indicator(); 1124 hfp_ag_trigger_incoming_call(); 1125 log_info("AG rings"); 1126 break; 1127 default: 1128 break; 1129 } 1130 break; 1131 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1132 switch (hfp_gsm_callsetup_status()){ 1133 case HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS: 1134 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL); 1135 hfp_ag_set_callsetup_indicator(); 1136 hfp_ag_trigger_incoming_call(); 1137 log_info("AG call waiting"); 1138 break; 1139 default: 1140 break; 1141 } 1142 break; 1143 } 1144 break; 1145 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG: 1146 switch (hfp_gsm_call_status()){ 1147 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1148 switch (hfp_gsm_callsetup_status()){ 1149 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1150 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1151 hfp_ag_set_call_indicator(); 1152 hfp_ag_set_callsetup_indicator(); 1153 hfp_ag_ag_accept_call(); 1154 log_info("AG answers call, accept call by GSM"); 1155 break; 1156 default: 1157 break; 1158 } 1159 break; 1160 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1161 switch (hfp_gsm_callsetup_status()){ 1162 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1163 log_info("AG: current call is placed on hold, incoming call gets active"); 1164 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG); 1165 hfp_ag_set_callsetup_indicator(); 1166 hfp_ag_set_callheld_indicator(); 1167 hfp_ag_transfer_callsetup_state(); 1168 hfp_ag_transfer_callheld_state(); 1169 break; 1170 default: 1171 break; 1172 } 1173 break; 1174 } 1175 break; 1176 1177 case HFP_AG_HELD_CALL_JOINED_BY_AG: 1178 switch (hfp_gsm_call_status()){ 1179 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1180 switch (hfp_gsm_callheld_status()){ 1181 case HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED: 1182 log_info("AG: joining held call with active call"); 1183 hfp_gsm_handle_event(HFP_AG_HELD_CALL_JOINED_BY_AG); 1184 hfp_ag_set_callheld_indicator(); 1185 hfp_ag_transfer_callheld_state(); 1186 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1187 break; 1188 default: 1189 break; 1190 } 1191 break; 1192 default: 1193 break; 1194 } 1195 break; 1196 1197 case HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF: 1198 switch (hfp_gsm_call_status()){ 1199 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1200 switch (hfp_gsm_callsetup_status()){ 1201 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1202 hfp_gsm_handle_event(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF); 1203 hfp_ag_set_callsetup_indicator(); 1204 hfp_ag_set_call_indicator(); 1205 hfp_ag_hf_accept_call(hfp_connection); 1206 log_info("HF answers call, accept call by GSM"); 1207 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1208 break; 1209 default: 1210 break; 1211 } 1212 break; 1213 default: 1214 break; 1215 } 1216 break; 1217 1218 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG: 1219 switch (hfp_gsm_call_status()){ 1220 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1221 switch (hfp_gsm_callsetup_status()){ 1222 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1223 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG); 1224 hfp_ag_response_and_hold_active = 1; 1225 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1226 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1227 // as with regualr call 1228 hfp_ag_set_call_indicator(); 1229 hfp_ag_set_callsetup_indicator(); 1230 hfp_ag_ag_accept_call(); 1231 log_info("AG response and hold - hold by AG"); 1232 break; 1233 default: 1234 break; 1235 } 1236 break; 1237 default: 1238 break; 1239 } 1240 break; 1241 1242 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF: 1243 switch (hfp_gsm_call_status()){ 1244 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1245 switch (hfp_gsm_callsetup_status()){ 1246 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1247 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF); 1248 hfp_ag_response_and_hold_active = 1; 1249 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD; 1250 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1251 // as with regualr call 1252 hfp_ag_set_call_indicator(); 1253 hfp_ag_set_callsetup_indicator(); 1254 hfp_ag_hf_accept_call(hfp_connection); 1255 log_info("AG response and hold - hold by HF"); 1256 break; 1257 default: 1258 break; 1259 } 1260 break; 1261 default: 1262 break; 1263 } 1264 break; 1265 1266 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG: 1267 case HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF: 1268 if (!hfp_ag_response_and_hold_active) break; 1269 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1270 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG); 1271 hfp_ag_response_and_hold_active = 0; 1272 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED; 1273 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1274 log_info("Held Call accepted and active"); 1275 break; 1276 1277 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG: 1278 case HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF: 1279 if (!hfp_ag_response_and_hold_active) break; 1280 if (hfp_ag_response_and_hold_state != HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD) break; 1281 hfp_gsm_handle_event(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG); 1282 hfp_ag_response_and_hold_active = 0; 1283 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1284 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1285 // from terminate by ag 1286 hfp_ag_set_call_indicator(); 1287 hfp_ag_trigger_terminate_call(); 1288 break; 1289 1290 case HFP_AG_TERMINATE_CALL_BY_HF: 1291 switch (hfp_gsm_call_status()){ 1292 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1293 switch (hfp_gsm_callsetup_status()){ 1294 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1295 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1296 hfp_ag_set_callsetup_indicator(); 1297 hfp_ag_transfer_callsetup_state(); 1298 hfp_ag_trigger_reject_call(); 1299 log_info("HF Rejected Incoming call, AG terminate call"); 1300 break; 1301 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1302 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1303 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1304 hfp_ag_set_callsetup_indicator(); 1305 hfp_ag_transfer_callsetup_state(); 1306 log_info("AG terminate outgoing call process"); 1307 break; 1308 default: 1309 break; 1310 } 1311 break; 1312 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1313 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_HF); 1314 hfp_ag_set_call_indicator(); 1315 hfp_ag_transfer_call_state(); 1316 hfp_connection->call_state = HFP_CALL_IDLE; 1317 log_info("AG terminate call"); 1318 break; 1319 } 1320 break; 1321 1322 case HFP_AG_TERMINATE_CALL_BY_AG: 1323 switch (hfp_gsm_call_status()){ 1324 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1325 switch (hfp_gsm_callsetup_status()){ 1326 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1327 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1328 hfp_ag_set_callsetup_indicator(); 1329 hfp_ag_trigger_reject_call(); 1330 log_info("AG Rejected Incoming call, AG terminate call"); 1331 break; 1332 default: 1333 break; 1334 } 1335 break; 1336 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1337 hfp_gsm_handle_event(HFP_AG_TERMINATE_CALL_BY_AG); 1338 hfp_ag_set_callsetup_indicator(); 1339 hfp_ag_set_call_indicator(); 1340 hfp_ag_trigger_terminate_call(); 1341 log_info("AG terminate call"); 1342 break; 1343 default: 1344 break; 1345 } 1346 break; 1347 case HFP_AG_CALL_DROPPED: 1348 switch (hfp_gsm_call_status()){ 1349 case HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS: 1350 switch (hfp_gsm_callsetup_status()){ 1351 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1352 hfp_ag_stop_ringing(); 1353 log_info("Incoming call interrupted"); 1354 break; 1355 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_DIALING_STATE: 1356 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1357 log_info("Outgoing call interrupted\n"); 1358 log_info("AG notify call dropped\n"); 1359 break; 1360 default: 1361 break; 1362 } 1363 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1364 hfp_ag_set_callsetup_indicator(); 1365 hfp_ag_transfer_callsetup_state(); 1366 break; 1367 case HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT: 1368 if (hfp_ag_response_and_hold_active) { 1369 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1370 hfp_ag_response_and_hold_state = HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED; 1371 hfp_ag_send_response_and_hold_state(hfp_ag_response_and_hold_state); 1372 } 1373 hfp_gsm_handle_event(HFP_AG_CALL_DROPPED); 1374 hfp_ag_set_callsetup_indicator(); 1375 hfp_ag_set_call_indicator(); 1376 hfp_ag_trigger_terminate_call(); 1377 log_info("AG notify call dropped"); 1378 break; 1379 default: 1380 break; 1381 } 1382 break; 1383 1384 case HFP_AG_OUTGOING_CALL_INITIATED: 1385 // directly reject call if number of free slots is exceeded 1386 if (!hfp_gsm_call_possible()){ 1387 hfp_connection->send_error = 1; 1388 hfp_run_for_context(hfp_connection); 1389 break; 1390 } 1391 hfp_gsm_handle_event_with_call_number(HFP_AG_OUTGOING_CALL_INITIATED, (const char *) &hfp_connection->line_buffer[3]); 1392 1393 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1394 1395 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, (const char *) &hfp_connection->line_buffer[3]); 1396 break; 1397 1398 case HFP_AG_OUTGOING_REDIAL_INITIATED:{ 1399 // directly reject call if number of free slots is exceeded 1400 if (!hfp_gsm_call_possible()){ 1401 hfp_connection->send_error = 1; 1402 hfp_run_for_context(hfp_connection); 1403 break; 1404 } 1405 1406 hfp_gsm_handle_event(HFP_AG_OUTGOING_REDIAL_INITIATED); 1407 hfp_connection->call_state = HFP_CALL_OUTGOING_INITIATED; 1408 1409 log_info("Redial last number"); 1410 char * last_dialed_number = hfp_gsm_last_dialed_number(); 1411 1412 if (strlen(last_dialed_number) > 0){ 1413 log_info("Last number exists: accept call"); 1414 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_PLACE_CALL_WITH_NUMBER, last_dialed_number); 1415 } else { 1416 log_info("log_infoLast number missing: reject call"); 1417 hfp_ag_outgoing_call_rejected(); 1418 } 1419 break; 1420 } 1421 case HFP_AG_OUTGOING_CALL_REJECTED: 1422 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1423 if (!hfp_connection){ 1424 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1425 break; 1426 } 1427 1428 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_REJECTED); 1429 hfp_connection->call_state = HFP_CALL_IDLE; 1430 hfp_connection->send_error = 1; 1431 hfp_run_for_context(hfp_connection); 1432 break; 1433 1434 case HFP_AG_OUTGOING_CALL_ACCEPTED:{ 1435 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_INITIATED); 1436 if (!hfp_connection){ 1437 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in initiated state"); 1438 break; 1439 } 1440 1441 hfp_connection->ok_pending = 1; 1442 hfp_connection->call_state = HFP_CALL_OUTGOING_DIALING; 1443 1444 // trigger callsetup to be 1445 int put_call_on_hold = hfp_gsm_call_status() == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT; 1446 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ACCEPTED); 1447 1448 hfp_ag_set_callsetup_indicator(); 1449 indicator_index = get_ag_indicator_index_for_name("callsetup"); 1450 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 1451 1452 // put current call on hold if active 1453 if (put_call_on_hold){ 1454 log_info("AG putting current call on hold for new outgoing calllog_info"); 1455 hfp_ag_set_callheld_indicator(); 1456 indicator_index = get_ag_indicator_index_for_name("callheld"); 1457 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[indicator_index]); 1458 } 1459 1460 // start audio if needed 1461 hfp_ag_establish_audio_connection(hfp_connection->acl_handle); 1462 break; 1463 } 1464 case HFP_AG_OUTGOING_CALL_RINGING: 1465 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1466 if (!hfp_connection){ 1467 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection in dialing state"); 1468 break; 1469 } 1470 1471 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_RINGING); 1472 hfp_connection->call_state = HFP_CALL_OUTGOING_RINGING; 1473 hfp_ag_set_callsetup_indicator(); 1474 hfp_ag_transfer_callsetup_state(); 1475 break; 1476 1477 case HFP_AG_OUTGOING_CALL_ESTABLISHED:{ 1478 // get outgoing call 1479 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_RINGING); 1480 if (!hfp_connection){ 1481 hfp_connection = hfp_ag_connection_for_call_state(HFP_CALL_OUTGOING_DIALING); 1482 } 1483 if (!hfp_connection){ 1484 log_info("hfp_ag_call_sm: did not find outgoing hfp_connection"); 1485 break; 1486 } 1487 1488 int CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS = hfp_gsm_callheld_status() == HFP_CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS; 1489 hfp_gsm_handle_event(HFP_AG_OUTGOING_CALL_ESTABLISHED); 1490 hfp_connection->call_state = HFP_CALL_ACTIVE; 1491 hfp_ag_set_callsetup_indicator(); 1492 hfp_ag_set_call_indicator(); 1493 hfp_ag_transfer_call_state(); 1494 hfp_ag_transfer_callsetup_state(); 1495 if (CALLHELD_STATUS_CALL_ON_HOLD_AND_NO_ACTIVE_CALLS){ 1496 hfp_ag_set_callheld_indicator(); 1497 hfp_ag_transfer_callheld_state(); 1498 } 1499 break; 1500 } 1501 1502 case HFP_AG_CALL_HOLD_USER_BUSY: 1503 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_USER_BUSY); 1504 hfp_ag_set_callsetup_indicator(); 1505 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1506 hfp_connection->call_state = HFP_CALL_ACTIVE; 1507 log_info("AG: Call Waiting, User Busy"); 1508 break; 1509 1510 case HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1511 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1512 int call_held = hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1513 1514 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1515 if (call_held || call_setup_in_progress){ 1516 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1517 1518 } 1519 1520 if (call_setup_in_progress){ 1521 log_info("AG: Call Dropped, Accept new call"); 1522 hfp_ag_set_callsetup_indicator(); 1523 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1524 } else { 1525 log_info("AG: Call Dropped, Resume held call"); 1526 } 1527 if (call_held){ 1528 hfp_ag_set_callheld_indicator(); 1529 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1530 } 1531 1532 hfp_connection->call_state = HFP_CALL_ACTIVE; 1533 break; 1534 } 1535 1536 case HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL:{ 1537 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1538 // only update if callsetup changed 1539 int call_setup_in_progress = hfp_gsm_callsetup_status() != HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1540 hfp_gsm_handle_event_with_call_index(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection->call_index); 1541 1542 if (call_setup_in_progress){ 1543 log_info("AG: Call on Hold, Accept new call"); 1544 hfp_ag_set_callsetup_indicator(); 1545 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callsetup_indicator_index, 1); 1546 } else { 1547 log_info("AG: Swap calls"); 1548 } 1549 1550 hfp_ag_set_callheld_indicator(); 1551 // hfp_ag_set_callheld_state(HFP_CALLHELD_STATUS_CALL_ON_HOLD_OR_SWAPPED); 1552 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1553 hfp_connection->call_state = HFP_CALL_ACTIVE; 1554 break; 1555 } 1556 1557 case HFP_AG_CALL_HOLD_ADD_HELD_CALL: 1558 // Adds a held call to the conversation. 1559 if (hfp_gsm_callheld_status() != HFP_CALLHELD_STATUS_NO_CALLS_HELD){ 1560 log_info("AG: Join 3-way-call"); 1561 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_ADD_HELD_CALL); 1562 hfp_ag_set_callheld_indicator(); 1563 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1564 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CONFERENCE_CALL); 1565 } 1566 hfp_connection->call_state = HFP_CALL_ACTIVE; 1567 break; 1568 case HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS: 1569 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer) 1570 hfp_gsm_handle_event(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS); 1571 log_info("AG: Transfer call -> Connect two calls and disconnect"); 1572 hfp_ag_set_call_indicator(); 1573 hfp_ag_set_callheld_indicator(); 1574 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, call_indicator_index, 1); 1575 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, callheld_indicator_index, 1); 1576 hfp_connection->call_state = HFP_CALL_IDLE; 1577 break; 1578 1579 default: 1580 break; 1581 } 1582 1583 1584 } 1585 1586 1587 static void hfp_ag_send_call_status(hfp_connection_t * hfp_connection, int call_index){ 1588 hfp_gsm_call_t * active_call = hfp_gsm_call(call_index); 1589 if (!active_call) return; 1590 1591 int idx = active_call->index; 1592 hfp_enhanced_call_dir_t dir = active_call->direction; 1593 hfp_enhanced_call_status_t status = active_call->enhanced_status; 1594 hfp_enhanced_call_mode_t mode = active_call->mode; 1595 hfp_enhanced_call_mpty_t mpty = active_call->mpty; 1596 uint8_t type = active_call->clip_type; 1597 char * number = active_call->clip_number; 1598 1599 char buffer[100]; 1600 // TODO: check length of a buffer, to fit the MTU 1601 int offset = snprintf(buffer, sizeof(buffer), "\r\n%s: %d,%d,%d,%d,%d", HFP_LIST_CURRENT_CALLS, idx, dir, status, mode, mpty); 1602 if (number){ 1603 offset += snprintf(buffer+offset, sizeof(buffer)-offset-3, ", \"%s\",%u", number, type); 1604 } 1605 snprintf(buffer+offset, sizeof(buffer)-offset, "\r\n"); 1606 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, 1607 mode, mpty, type, number); 1608 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1609 } 1610 1611 static void hfp_run_for_context(hfp_connection_t *hfp_connection){ 1612 if (!hfp_connection) return; 1613 if (!hfp_connection->rfcomm_cid) return; 1614 1615 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 1616 log_info("hfp_run_for_context: request can send for 0x%02x", hfp_connection->rfcomm_cid); 1617 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1618 return; 1619 } 1620 if (hfp_connection->send_status_of_current_calls){ 1621 hfp_connection->ok_pending = 0; 1622 if (hfp_connection->next_call_index < hfp_gsm_get_number_of_calls()){ 1623 hfp_connection->next_call_index++; 1624 hfp_ag_send_call_status(hfp_connection, hfp_connection->next_call_index); 1625 } else { 1626 hfp_connection->next_call_index = 0; 1627 hfp_connection->ok_pending = 1; 1628 hfp_connection->send_status_of_current_calls = 0; 1629 } 1630 return; 1631 } 1632 1633 if (hfp_connection->ag_notify_incoming_call_waiting){ 1634 hfp_connection->ag_notify_incoming_call_waiting = 0; 1635 hfp_ag_send_call_waiting_notification(hfp_connection->rfcomm_cid); 1636 return; 1637 } 1638 1639 if (hfp_connection->command == HFP_CMD_UNKNOWN){ 1640 hfp_connection->ok_pending = 0; 1641 hfp_connection->send_error = 0; 1642 hfp_connection->command = HFP_CMD_NONE; 1643 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1644 return; 1645 } 1646 1647 if (hfp_connection->send_error){ 1648 hfp_connection->send_error = 0; 1649 hfp_connection->command = HFP_CMD_NONE; 1650 hfp_ag_send_error(hfp_connection->rfcomm_cid); 1651 return; 1652 } 1653 1654 // note: before update AG indicators and ok_pending 1655 if (hfp_connection->send_response_and_hold_status){ 1656 int status = hfp_connection->send_response_and_hold_status - 1; 1657 hfp_connection->send_response_and_hold_status = 0; 1658 hfp_ag_send_set_response_and_hold(hfp_connection->rfcomm_cid, status); 1659 return; 1660 } 1661 1662 if (hfp_connection->ok_pending){ 1663 hfp_connection->ok_pending = 0; 1664 hfp_connection->command = HFP_CMD_NONE; 1665 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1666 return; 1667 } 1668 1669 // update AG indicators 1670 if (hfp_connection->ag_indicators_status_update_bitmap){ 1671 int i; 1672 for (i=0;i<hfp_connection->ag_indicators_nr;i++){ 1673 if (get_bit(hfp_connection->ag_indicators_status_update_bitmap, i)){ 1674 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, i, 0); 1675 if (!hfp_connection->enable_status_update_for_ag_indicators) { 1676 log_info("+CMER:3,0,0,0 - not sending update for '%s'", hfp_ag_indicators[i].name); 1677 break; 1678 } 1679 hfp_ag_send_transfer_ag_indicators_status_cmd(hfp_connection->rfcomm_cid, &hfp_ag_indicators[i]); 1680 return; 1681 } 1682 } 1683 } 1684 1685 if (hfp_connection->ag_ring){ 1686 hfp_connection->ag_ring = 0; 1687 hfp_connection->command = HFP_CMD_NONE; 1688 hfp_ag_send_ring(hfp_connection->rfcomm_cid); 1689 return; 1690 } 1691 1692 if (hfp_connection->ag_send_clip){ 1693 hfp_connection->ag_send_clip = 0; 1694 hfp_connection->command = HFP_CMD_NONE; 1695 hfp_ag_send_clip(hfp_connection->rfcomm_cid); 1696 return; 1697 } 1698 1699 if (hfp_connection->send_phone_number_for_voice_tag){ 1700 hfp_connection->send_phone_number_for_voice_tag = 0; 1701 hfp_connection->command = HFP_CMD_NONE; 1702 hfp_connection->ok_pending = 1; 1703 hfp_ag_send_phone_number_for_voice_tag_cmd(hfp_connection->rfcomm_cid); 1704 return; 1705 } 1706 1707 if (hfp_connection->send_subscriber_number){ 1708 if (hfp_connection->next_subscriber_number_to_send < subscriber_numbers_count){ 1709 hfp_phone_number_t phone = subscriber_numbers[hfp_connection->next_subscriber_number_to_send++]; 1710 hfp_send_subscriber_number_cmd(hfp_connection->rfcomm_cid, phone.type, phone.number); 1711 } else { 1712 hfp_connection->send_subscriber_number = 0; 1713 hfp_connection->next_subscriber_number_to_send = 0; 1714 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1715 } 1716 hfp_connection->command = HFP_CMD_NONE; 1717 1718 } 1719 1720 if (hfp_connection->send_microphone_gain){ 1721 hfp_connection->send_microphone_gain = 0; 1722 hfp_connection->command = HFP_CMD_NONE; 1723 hfp_ag_send_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 1724 return; 1725 } 1726 1727 if (hfp_connection->send_speaker_gain){ 1728 hfp_connection->send_speaker_gain = 0; 1729 hfp_connection->command = HFP_CMD_NONE; 1730 hfp_ag_send_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 1731 return; 1732 } 1733 1734 if (hfp_connection->send_ag_status_indicators){ 1735 hfp_connection->send_ag_status_indicators = 0; 1736 hfp_ag_send_retrieve_indicators_status_cmd(hfp_connection->rfcomm_cid); 1737 return; 1738 } 1739 1740 // trigger codec exchange if requested by app 1741 if (hfp_connection->trigger_codec_exchange){ 1742 log_info("trigger codec, command %u, codec state %u", hfp_connection->command, hfp_connection->codecs_state); 1743 } 1744 if (hfp_connection->trigger_codec_exchange && hfp_connection->command == HFP_CMD_NONE){ 1745 switch (hfp_connection->codecs_state){ 1746 case HFP_CODECS_IDLE: 1747 case HFP_CODECS_RECEIVED_LIST: 1748 case HFP_CODECS_AG_RESEND_COMMON_CODEC: 1749 case HFP_CODECS_ERROR: 1750 hfp_connection->trigger_codec_exchange = 0; 1751 hfp_connection->command = HFP_CMD_AG_SEND_COMMON_CODEC; 1752 break; 1753 default: 1754 break; 1755 } 1756 } 1757 1758 int cmd_sent = hfp_ag_run_for_context_service_level_connection(hfp_connection); 1759 if (!cmd_sent){ 1760 cmd_sent = hfp_ag_run_for_context_service_level_connection_queries(hfp_connection); 1761 } 1762 1763 if (!cmd_sent){ 1764 cmd_sent = call_setup_state_machine(hfp_connection); 1765 } 1766 1767 if (!cmd_sent){ 1768 cmd_sent = hfp_ag_run_for_audio_connection(hfp_connection); 1769 } 1770 1771 if (hfp_connection->command == HFP_CMD_NONE && !cmd_sent){ 1772 // log_info("hfp_connection->command == HFP_CMD_NONE"); 1773 switch(hfp_connection->state){ 1774 case HFP_W2_DISCONNECT_RFCOMM: 1775 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1776 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1777 break; 1778 default: 1779 break; 1780 } 1781 } 1782 1783 if (cmd_sent){ 1784 hfp_connection->command = HFP_CMD_NONE; 1785 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 1786 } 1787 } 1788 1789 static hfp_generic_status_indicator_t *get_hf_indicator_by_number(int number){ 1790 int i; 1791 for (i=0;i< hfp_generic_status_indicators_nr;i++){ 1792 hfp_generic_status_indicator_t * indicator = &hfp_generic_status_indicators[i]; 1793 if (indicator->uuid == number){ 1794 return indicator; 1795 } 1796 } 1797 return NULL; 1798 } 1799 1800 static void hfp_handle_rfcomm_data(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1801 UNUSED(packet_type); // ok: only called with RFCOMM_DATA_PACKET 1802 1803 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1804 if (size < 1) return; 1805 1806 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1807 if (!hfp_connection) return; 1808 1809 // temp overwrite last byte (most likely \n for log_info) 1810 char last_char = packet[size-1]; 1811 packet[size-1] = 0; 1812 log_info("HFP_RX %s", packet); 1813 packet[size-1] = last_char; 1814 1815 // process messages byte-wise 1816 int pos; 1817 for (pos = 0; pos < size ; pos++){ 1818 hfp_parse(hfp_connection, packet[pos], 0); 1819 } 1820 hfp_generic_status_indicator_t * indicator; 1821 int value; 1822 switch(hfp_connection->command){ 1823 case HFP_CMD_RESPONSE_AND_HOLD_QUERY: 1824 if (hfp_ag_response_and_hold_active){ 1825 hfp_connection->send_response_and_hold_status = HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD + 1; 1826 } 1827 hfp_connection->ok_pending = 1; 1828 break; 1829 case HFP_CMD_RESPONSE_AND_HOLD_COMMAND: 1830 value = btstack_atoi((char *)&hfp_connection->line_buffer[0]); 1831 log_info("HF Response and Hold: %u", value); 1832 switch(value){ 1833 case HFP_RESPONSE_AND_HOLD_INCOMING_ON_HOLD: 1834 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_HF, hfp_connection); 1835 break; 1836 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_ACCEPTED: 1837 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_HF, hfp_connection); 1838 break; 1839 case HFP_RESPONSE_AND_HOLD_HELD_INCOMING_REJECTED: 1840 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_HF, hfp_connection); 1841 break; 1842 default: 1843 break; 1844 } 1845 hfp_connection->ok_pending = 1; 1846 break; 1847 case HFP_CMD_HF_INDICATOR_STATUS: 1848 hfp_connection->command = HFP_CMD_NONE; 1849 // find indicator by assigned number 1850 indicator = get_hf_indicator_by_number(hfp_connection->parser_indicator_index); 1851 if (!indicator){ 1852 hfp_connection->send_error = 1; 1853 break; 1854 } 1855 value = btstack_atoi((char *)&hfp_connection->line_buffer[0]); 1856 switch (indicator->uuid){ 1857 case 1: // enhanced security 1858 if (value > 1) { 1859 hfp_connection->send_error = 1; 1860 return; 1861 } 1862 log_info("HF Indicator 'enhanced security' set to %u", value); 1863 break; 1864 case 2: // battery level 1865 if (value > 100){ 1866 hfp_connection->send_error = 1; 1867 return; 1868 } 1869 log_info("HF Indicator 'battery' set to %u", value); 1870 break; 1871 default: 1872 log_info("HF Indicator unknown set to %u", value); 1873 break; 1874 } 1875 hfp_connection->ok_pending = 1; 1876 break; 1877 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1878 // expected by SLC state machine 1879 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break; 1880 hfp_connection->send_ag_indicators_segment = 0; 1881 hfp_connection->send_ag_status_indicators = 1; 1882 break; 1883 case HFP_CMD_LIST_CURRENT_CALLS: 1884 hfp_connection->command = HFP_CMD_NONE; 1885 hfp_connection->next_call_index = 0; 1886 hfp_connection->send_status_of_current_calls = 1; 1887 break; 1888 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1889 if (subscriber_numbers_count == 0){ 1890 hfp_ag_send_ok(hfp_connection->rfcomm_cid); 1891 break; 1892 } 1893 hfp_connection->next_subscriber_number_to_send = 0; 1894 hfp_connection->send_subscriber_number = 1; 1895 break; 1896 case HFP_CMD_TRANSMIT_DTMF_CODES: 1897 hfp_connection->command = HFP_CMD_NONE; 1898 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, (const char *) &hfp_connection->line_buffer[0]); 1899 break; 1900 case HFP_CMD_HF_REQUEST_PHONE_NUMBER: 1901 hfp_connection->command = HFP_CMD_NONE; 1902 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_ATTACH_NUMBER_TO_VOICE_TAG); 1903 break; 1904 case HFP_CMD_TURN_OFF_EC_AND_NR: 1905 hfp_connection->command = HFP_CMD_NONE; 1906 if (get_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION)){ 1907 hfp_connection->ok_pending = 1; 1908 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_EC_NR_FUNCTION, hfp_connection->ag_echo_and_noise_reduction); 1909 log_info("AG: EC/NR = %u", hfp_connection->ag_echo_and_noise_reduction); 1910 } else { 1911 hfp_connection->send_error = 1; 1912 } 1913 break; 1914 case HFP_CMD_CALL_ANSWERED: 1915 hfp_connection->command = HFP_CMD_NONE; 1916 log_info("HFP: ATA"); 1917 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_HF, hfp_connection); 1918 break; 1919 case HFP_CMD_HANG_UP_CALL: 1920 hfp_connection->command = HFP_CMD_NONE; 1921 hfp_connection->ok_pending = 1; 1922 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_HF, hfp_connection); 1923 break; 1924 case HFP_CMD_CALL_HOLD: { 1925 // TODO: fully implement this 1926 log_error("HFP: unhandled call hold type %c", hfp_connection->line_buffer[0]); 1927 hfp_connection->command = HFP_CMD_NONE; 1928 hfp_connection->ok_pending = 1; 1929 hfp_connection->call_index = 0; 1930 1931 if (hfp_connection->line_buffer[1] != '\0'){ 1932 hfp_connection->call_index = btstack_atoi((char *)&hfp_connection->line_buffer[1]); 1933 } 1934 1935 switch (hfp_connection->line_buffer[0]){ 1936 case '0': 1937 // Releases all held calls or sets User Determined User Busy (UDUB) for a waiting call. 1938 hfp_ag_call_sm(HFP_AG_CALL_HOLD_USER_BUSY, hfp_connection); 1939 break; 1940 case '1': 1941 // Releases all active calls (if any exist) and accepts the other (held or waiting) call. 1942 // Where both a held and a waiting call exist, the above procedures shall apply to the 1943 // waiting call (i.e., not to the held call) in conflicting situation. 1944 hfp_ag_call_sm(HFP_AG_CALL_HOLD_RELEASE_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1945 break; 1946 case '2': 1947 // Places all active calls (if any exist) on hold and accepts the other (held or waiting) call. 1948 // Where both a held and a waiting call exist, the above procedures shall apply to the 1949 // waiting call (i.e., not to the held call) in conflicting situation. 1950 hfp_ag_call_sm(HFP_AG_CALL_HOLD_PARK_ACTIVE_ACCEPT_HELD_OR_WAITING_CALL, hfp_connection); 1951 break; 1952 case '3': 1953 // Adds a held call to the conversation. 1954 hfp_ag_call_sm(HFP_AG_CALL_HOLD_ADD_HELD_CALL, hfp_connection); 1955 break; 1956 case '4': 1957 // Connects the two calls and disconnects the subscriber from both calls (Explicit Call Transfer). 1958 hfp_ag_call_sm(HFP_AG_CALL_HOLD_EXIT_AND_JOIN_CALLS, hfp_connection); 1959 break; 1960 default: 1961 break; 1962 } 1963 break; 1964 } 1965 case HFP_CMD_CALL_PHONE_NUMBER: 1966 hfp_connection->command = HFP_CMD_NONE; 1967 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_INITIATED, hfp_connection); 1968 break; 1969 case HFP_CMD_REDIAL_LAST_NUMBER: 1970 hfp_connection->command = HFP_CMD_NONE; 1971 hfp_ag_call_sm(HFP_AG_OUTGOING_REDIAL_INITIATED, hfp_connection); 1972 break; 1973 case HFP_CMD_ENABLE_CLIP: 1974 hfp_connection->command = HFP_CMD_NONE; 1975 hfp_connection->clip_enabled = hfp_connection->line_buffer[8] != '0'; 1976 log_info("hfp: clip set, now: %u", hfp_connection->clip_enabled); 1977 hfp_connection->ok_pending = 1; 1978 break; 1979 case HFP_CMD_ENABLE_CALL_WAITING_NOTIFICATION: 1980 hfp_connection->command = HFP_CMD_NONE; 1981 hfp_connection->call_waiting_notification_enabled = hfp_connection->line_buffer[8] != '0'; 1982 log_info("hfp: call waiting notification set, now: %u", hfp_connection->call_waiting_notification_enabled); 1983 hfp_connection->ok_pending = 1; 1984 break; 1985 case HFP_CMD_SET_SPEAKER_GAIN: 1986 hfp_connection->command = HFP_CMD_NONE; 1987 hfp_connection->ok_pending = 1; 1988 log_info("HF speaker gain = %u", hfp_connection->speaker_gain); 1989 break; 1990 case HFP_CMD_SET_MICROPHONE_GAIN: 1991 hfp_connection->command = HFP_CMD_NONE; 1992 hfp_connection->ok_pending = 1; 1993 log_info("HF microphone gain = %u", hfp_connection->microphone_gain); 1994 break; 1995 default: 1996 break; 1997 } 1998 } 1999 2000 static void hfp_run(void){ 2001 btstack_linked_list_iterator_t it; 2002 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2003 while (btstack_linked_list_iterator_has_next(&it)){ 2004 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2005 hfp_run_for_context(hfp_connection); 2006 } 2007 } 2008 2009 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 2010 switch (packet_type){ 2011 case RFCOMM_DATA_PACKET: 2012 hfp_handle_rfcomm_data(packet_type, channel, packet, size); 2013 break; 2014 case HCI_EVENT_PACKET: 2015 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 2016 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 2017 hfp_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 2018 return; 2019 } 2020 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_AG); 2021 break; 2022 default: 2023 break; 2024 } 2025 2026 hfp_run(); 2027 } 2028 2029 2030 void hfp_ag_init_codecs(int codecs_nr, uint8_t * codecs){ 2031 if (codecs_nr > HFP_MAX_NUM_CODECS){ 2032 log_error("hfp_init: codecs_nr (%d) > HFP_MAX_NUM_CODECS (%d)", codecs_nr, HFP_MAX_NUM_CODECS); 2033 return; 2034 } 2035 int i; 2036 hfp_codecs_nr = codecs_nr; 2037 for (i=0; i < codecs_nr; i++){ 2038 hfp_codecs[i] = codecs[i]; 2039 } 2040 } 2041 2042 void hfp_ag_init_supported_features(uint32_t supported_features){ 2043 hfp_supported_features = supported_features; 2044 } 2045 2046 void hfp_ag_init_ag_indicators(int ag_indicators_nr, hfp_ag_indicator_t * ag_indicators){ 2047 hfp_ag_indicators_nr = ag_indicators_nr; 2048 memcpy(hfp_ag_indicators, ag_indicators, ag_indicators_nr * sizeof(hfp_ag_indicator_t)); 2049 } 2050 2051 void hfp_ag_init_hf_indicators(int hf_indicators_nr, hfp_generic_status_indicator_t * hf_indicators){ 2052 if (hf_indicators_nr > HFP_MAX_NUM_HF_INDICATORS) return; 2053 hfp_generic_status_indicators_nr = hf_indicators_nr; 2054 memcpy(hfp_generic_status_indicators, hf_indicators, hf_indicators_nr * sizeof(hfp_generic_status_indicator_t)); 2055 } 2056 2057 void hfp_ag_init_call_hold_services(int call_hold_services_nr, const char * call_hold_services[]){ 2058 hfp_ag_call_hold_services_nr = call_hold_services_nr; 2059 memcpy(hfp_ag_call_hold_services, call_hold_services, call_hold_services_nr * sizeof(char *)); 2060 } 2061 2062 2063 void hfp_ag_init(uint16_t rfcomm_channel_nr){ 2064 // register for HCI events 2065 hci_event_callback_registration.callback = &packet_handler; 2066 hci_add_event_handler(&hci_event_callback_registration); 2067 2068 rfcomm_register_service(&packet_handler, rfcomm_channel_nr, 0xffff); 2069 2070 hfp_ag_response_and_hold_active = 0; 2071 subscriber_numbers = NULL; 2072 subscriber_numbers_count = 0; 2073 2074 hfp_set_ag_rfcomm_packet_handler(&packet_handler); 2075 2076 hfp_gsm_init(); 2077 } 2078 2079 void hfp_ag_establish_service_level_connection(bd_addr_t bd_addr){ 2080 hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE, HFP_ROLE_AG); 2081 } 2082 2083 void hfp_ag_release_service_level_connection(hci_con_handle_t acl_handle){ 2084 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2085 if (!hfp_connection){ 2086 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2087 return; 2088 } 2089 hfp_release_service_level_connection(hfp_connection); 2090 hfp_run_for_context(hfp_connection); 2091 } 2092 2093 void hfp_ag_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, hfp_cme_error_t error){ 2094 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2095 if (!hfp_connection){ 2096 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2097 return; 2098 } 2099 hfp_connection->extended_audio_gateway_error = 0; 2100 if (!hfp_connection->enable_extended_audio_gateway_error_report){ 2101 return; 2102 } 2103 hfp_connection->extended_audio_gateway_error = error; 2104 hfp_run_for_context(hfp_connection); 2105 } 2106 2107 static void hfp_ag_setup_audio_connection(hfp_connection_t * hfp_connection){ 2108 log_info("hfp_ag_setup_audio_connection state %u", hfp_connection->state); 2109 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return; 2110 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO) return; 2111 2112 hfp_connection->establish_audio_connection = 1; 2113 if (!has_codec_negotiation_feature(hfp_connection)){ 2114 log_info("hfp_ag_establish_audio_connection - no codec negotiation feature, using CVSD"); 2115 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 2116 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 2117 // now, pick link settings 2118 hfp_init_link_settings(hfp_connection); 2119 return; 2120 } 2121 2122 hfp_connection->trigger_codec_exchange = 1; 2123 } 2124 2125 void hfp_ag_establish_audio_connection(hci_con_handle_t acl_handle){ 2126 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2127 if (!hfp_connection){ 2128 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2129 return; 2130 } 2131 hfp_connection->trigger_codec_exchange = 0; 2132 hfp_connection->establish_audio_connection = 0; 2133 hfp_ag_setup_audio_connection(hfp_connection); 2134 hfp_run_for_context(hfp_connection); 2135 } 2136 2137 void hfp_ag_release_audio_connection(hci_con_handle_t acl_handle){ 2138 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2139 if (!hfp_connection){ 2140 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2141 return; 2142 } 2143 hfp_release_audio_connection(hfp_connection); 2144 hfp_run_for_context(hfp_connection); 2145 } 2146 2147 /** 2148 * @brief Enable in-band ring tone 2149 */ 2150 void hfp_ag_set_use_in_band_ring_tone(int use_in_band_ring_tone){ 2151 if (get_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE) == use_in_band_ring_tone){ 2152 return; 2153 } 2154 hfp_supported_features = store_bit(hfp_supported_features, HFP_AGSF_IN_BAND_RING_TONE, use_in_band_ring_tone); 2155 2156 btstack_linked_list_iterator_t it; 2157 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2158 while (btstack_linked_list_iterator_has_next(&it)){ 2159 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2160 hfp_connection->command = HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING; 2161 hfp_run_for_context(hfp_connection); 2162 } 2163 } 2164 2165 /** 2166 * @brief Called from GSM 2167 */ 2168 void hfp_ag_incoming_call(void){ 2169 hfp_ag_call_sm(HFP_AG_INCOMING_CALL, NULL); 2170 } 2171 2172 /** 2173 * @brief number is stored. 2174 */ 2175 void hfp_ag_set_clip(uint8_t type, const char * number){ 2176 hfp_gsm_handle_event_with_clip(HFP_AG_SET_CLIP, type, number); 2177 } 2178 2179 void hfp_ag_call_dropped(void){ 2180 hfp_ag_call_sm(HFP_AG_CALL_DROPPED, NULL); 2181 } 2182 2183 // call from AG UI 2184 void hfp_ag_answer_incoming_call(void){ 2185 hfp_ag_call_sm(HFP_AG_INCOMING_CALL_ACCEPTED_BY_AG, NULL); 2186 } 2187 2188 void hfp_ag_join_held_call(void){ 2189 hfp_ag_call_sm(HFP_AG_HELD_CALL_JOINED_BY_AG, NULL); 2190 } 2191 2192 void hfp_ag_terminate_call(void){ 2193 hfp_ag_call_sm(HFP_AG_TERMINATE_CALL_BY_AG, NULL); 2194 } 2195 2196 void hfp_ag_outgoing_call_ringing(void){ 2197 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_RINGING, NULL); 2198 } 2199 2200 void hfp_ag_outgoing_call_established(void){ 2201 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ESTABLISHED, NULL); 2202 } 2203 2204 void hfp_ag_outgoing_call_rejected(void){ 2205 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_REJECTED, NULL); 2206 } 2207 2208 void hfp_ag_outgoing_call_accepted(void){ 2209 hfp_ag_call_sm(HFP_AG_OUTGOING_CALL_ACCEPTED, NULL); 2210 } 2211 2212 void hfp_ag_hold_incoming_call(void){ 2213 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_INCOMING_CALL_BY_AG, NULL); 2214 } 2215 2216 void hfp_ag_accept_held_incoming_call(void) { 2217 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_ACCEPT_HELD_CALL_BY_AG, NULL); 2218 } 2219 2220 void hfp_ag_reject_held_incoming_call(void){ 2221 hfp_ag_call_sm(HFP_AG_RESPONSE_AND_HOLD_REJECT_HELD_CALL_BY_AG, NULL); 2222 } 2223 2224 static void hfp_ag_set_ag_indicator(const char * name, int value){ 2225 int indicator_index = get_ag_indicator_index_for_name(name); 2226 if (indicator_index < 0) return; 2227 hfp_ag_indicators[indicator_index].status = value; 2228 2229 2230 btstack_linked_list_iterator_t it; 2231 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 2232 while (btstack_linked_list_iterator_has_next(&it)){ 2233 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 2234 if (! hfp_connection->ag_indicators[indicator_index].enabled) { 2235 log_info("AG indicator '%s' changed to %u but not enabled", hfp_ag_indicators[indicator_index].name, value); 2236 continue; 2237 } 2238 log_info("AG indicator '%s' changed to %u, request transfer statur", hfp_ag_indicators[indicator_index].name, value); 2239 hfp_connection->ag_indicators_status_update_bitmap = store_bit(hfp_connection->ag_indicators_status_update_bitmap, indicator_index, 1); 2240 hfp_run_for_context(hfp_connection); 2241 } 2242 } 2243 2244 void hfp_ag_set_registration_status(int status){ 2245 hfp_ag_set_ag_indicator("service", status); 2246 } 2247 2248 void hfp_ag_set_signal_strength(int strength){ 2249 hfp_ag_set_ag_indicator("signal", strength); 2250 } 2251 2252 void hfp_ag_set_roaming_status(int status){ 2253 hfp_ag_set_ag_indicator("roam", status); 2254 } 2255 2256 void hfp_ag_set_battery_level(int level){ 2257 hfp_ag_set_ag_indicator("battchg", level); 2258 } 2259 2260 void hfp_ag_activate_voice_recognition(hci_con_handle_t acl_handle, int activate){ 2261 if (!get_bit(hfp_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION)) return; 2262 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2263 if (!hfp_connection){ 2264 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2265 return; 2266 } 2267 2268 if (!get_bit(hfp_connection->remote_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION)) { 2269 log_info("AG cannot acivate voice recognition - not supported by HF"); 2270 return; 2271 } 2272 2273 if (activate){ 2274 hfp_ag_establish_audio_connection(acl_handle); 2275 } 2276 2277 hfp_connection->ag_activate_voice_recognition = activate; 2278 hfp_connection->command = HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION; 2279 hfp_run_for_context(hfp_connection); 2280 } 2281 2282 void hfp_ag_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2283 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2284 if (!hfp_connection){ 2285 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2286 return; 2287 } 2288 if (hfp_connection->microphone_gain != gain){ 2289 hfp_connection->command = HFP_CMD_SET_MICROPHONE_GAIN; 2290 hfp_connection->microphone_gain = gain; 2291 hfp_connection->send_microphone_gain = 1; 2292 } 2293 hfp_run_for_context(hfp_connection); 2294 } 2295 2296 void hfp_ag_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2297 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2298 if (!hfp_connection){ 2299 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2300 return; 2301 } 2302 if (hfp_connection->speaker_gain != gain){ 2303 hfp_connection->speaker_gain = gain; 2304 hfp_connection->send_speaker_gain = 1; 2305 } 2306 hfp_run_for_context(hfp_connection); 2307 } 2308 2309 void hfp_ag_send_phone_number_for_voice_tag(hci_con_handle_t acl_handle, const char * number){ 2310 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2311 if (!hfp_connection){ 2312 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2313 return; 2314 } 2315 hfp_ag_set_clip(0, number); 2316 hfp_connection->send_phone_number_for_voice_tag = 1; 2317 } 2318 2319 void hfp_ag_reject_phone_number_for_voice_tag(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->send_error = 1; 2326 } 2327 2328 void hfp_ag_send_dtmf_code_done(hci_con_handle_t acl_handle){ 2329 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2330 if (!hfp_connection){ 2331 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2332 return; 2333 } 2334 hfp_connection->ok_pending = 1; 2335 } 2336 2337 void hfp_ag_set_subcriber_number_information(hfp_phone_number_t * numbers, int numbers_count){ 2338 subscriber_numbers = numbers; 2339 subscriber_numbers_count = numbers_count; 2340 } 2341 2342 void hfp_ag_clear_last_dialed_number(void){ 2343 hfp_gsm_clear_last_dialed_number(); 2344 } 2345 2346 void hfp_ag_notify_incoming_call_waiting(hci_con_handle_t acl_handle){ 2347 hfp_connection_t * hfp_connection = get_hfp_connection_context_for_acl_handle(acl_handle); 2348 if (!hfp_connection){ 2349 log_error("HFP AG: ACL connection 0x%2x is not found.", acl_handle); 2350 return; 2351 } 2352 if (!hfp_connection->call_waiting_notification_enabled) return; 2353 2354 hfp_connection->ag_notify_incoming_call_waiting = 1; 2355 hfp_run_for_context(hfp_connection); 2356 } 2357 2358