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 BLUEKITCHEN 24 * GMBH 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_hf.c" 39 40 // ***************************************************************************** 41 // 42 // HFP Hands-Free (HF) unit 43 // 44 // ***************************************************************************** 45 46 #include "btstack_config.h" 47 48 #include <stdint.h> 49 #include <stdio.h> 50 #include <string.h> 51 52 #include "bluetooth_sdp.h" 53 #include "btstack_debug.h" 54 #include "btstack_event.h" 55 #include "btstack_memory.h" 56 #include "btstack_run_loop.h" 57 #include "classic/core.h" 58 #include "classic/hfp.h" 59 #include "classic/hfp_hf.h" 60 #include "classic/sdp_client_rfcomm.h" 61 #include "classic/sdp_server.h" 62 #include "classic/sdp_util.h" 63 #include "hci.h" 64 #include "hci_cmd.h" 65 #include "hci_dump.h" 66 #include "l2cap.h" 67 68 // const 69 static const char hfp_hf_default_service_name[] = "Hands-Free unit"; 70 71 // globals 72 73 // higher layer callbacks 74 static btstack_packet_handler_t hfp_hf_callback; 75 76 static btstack_packet_callback_registration_t hfp_hf_hci_event_callback_registration; 77 78 static uint16_t hfp_hf_supported_features; 79 static uint8_t hfp_hf_codecs_nr; 80 static uint8_t hfp_hf_codecs[HFP_MAX_NUM_CODECS]; 81 82 static uint8_t hfp_hf_indicators_nr; 83 static uint8_t hfp_hf_indicators[HFP_MAX_NUM_INDICATORS]; 84 static uint32_t hfp_hf_indicators_value[HFP_MAX_NUM_INDICATORS]; 85 86 static uint8_t hfp_hf_speaker_gain; 87 static uint8_t hfp_hf_microphone_gain; 88 89 static hfp_call_status_t hfp_hf_call_status; 90 static hfp_callsetup_status_t hfp_hf_callsetup_status; 91 static hfp_callheld_status_t hfp_hf_callheld_status; 92 93 static char hfp_hf_phone_number[25]; 94 95 96 static int has_codec_negotiation_feature(hfp_connection_t * hfp_connection){ 97 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_CODEC_NEGOTIATION); 98 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_CODEC_NEGOTIATION); 99 return hf && ag; 100 } 101 102 static int has_call_waiting_and_3way_calling_feature(hfp_connection_t * hfp_connection){ 103 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_THREE_WAY_CALLING); 104 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_THREE_WAY_CALLING); 105 return hf && ag; 106 } 107 108 109 static int has_hf_indicators_feature(hfp_connection_t * hfp_connection){ 110 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_HF_INDICATORS); 111 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_HF_INDICATORS); 112 return hf && ag; 113 } 114 115 static bool hfp_hf_vra_flag_supported(hfp_connection_t * hfp_connection){ 116 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_VOICE_RECOGNITION_FUNCTION); 117 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_VOICE_RECOGNITION_FUNCTION); 118 return hf && ag; 119 } 120 121 static bool hfp_hf_enhanced_vra_flag_supported(hfp_connection_t * hfp_connection){ 122 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS); 123 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_ENHANCED_VOICE_RECOGNITION_STATUS); 124 return hf && ag; 125 } 126 127 static hfp_connection_t * get_hfp_hf_connection_context_for_acl_handle(uint16_t handle){ 128 btstack_linked_list_iterator_t it; 129 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 130 while (btstack_linked_list_iterator_has_next(&it)){ 131 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 132 if (hfp_connection->acl_handle != handle) continue; 133 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 134 return hfp_connection; 135 } 136 return NULL; 137 } 138 139 /* emit functions */ 140 141 static void hfp_hf_emit_subscriber_information(const hfp_connection_t * hfp_connection, uint8_t status){ 142 if (hfp_hf_callback == NULL) return; 143 uint16_t bnip_number_len = btstack_min((uint16_t) strlen(hfp_connection->bnip_number), sizeof(hfp_connection->bnip_number)-1); 144 uint8_t event[7 + sizeof(hfp_connection->bnip_number)]; 145 event[0] = HCI_EVENT_HFP_META; 146 event[1] = 6 + bnip_number_len; 147 event[2] = HFP_SUBEVENT_SUBSCRIBER_NUMBER_INFORMATION; 148 little_endian_store_16(event, 3, hfp_connection->acl_handle); 149 event[5] = status; 150 event[6] = hfp_connection->bnip_type; 151 memcpy(&event[7], hfp_connection->bnip_number, bnip_number_len); 152 event[7 + bnip_number_len] = 0; 153 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 8 + bnip_number_len); 154 } 155 156 static void hfp_hf_emit_type_number_alpha(const hfp_connection_t * hfp_connection, uint8_t event_subtype){ 157 if (hfp_hf_callback == NULL) return; 158 uint16_t bnip_number_len = btstack_min((uint16_t) strlen(hfp_connection->bnip_number), sizeof(hfp_connection->bnip_number)-1); 159 // 10 fixed - 1 (bnip_number_len <= sizeof(hfp_connection->bnip_number)-1) + 1 (trailing \0 for line buffer) 160 uint8_t event[10 + sizeof(hfp_connection->bnip_number) + sizeof(hfp_connection->line_buffer)]; 161 uint8_t alpha_len = hfp_connection->clip_have_alpha ? (uint16_t) strlen((const char *) hfp_connection->line_buffer) : 0; 162 uint8_t pos = 0; 163 event[pos++] = HCI_EVENT_HFP_META; 164 event[pos++] = 8 + bnip_number_len + alpha_len; 165 event[pos++] = event_subtype; 166 little_endian_store_16(event, 3, hfp_connection->acl_handle); 167 pos += 2; 168 event[pos++] = hfp_connection->bnip_type; 169 event[pos++] = bnip_number_len + 1; 170 memcpy(&event[7], hfp_connection->bnip_number, bnip_number_len); 171 pos += bnip_number_len; 172 event[pos++] = 0; 173 event[pos++] = alpha_len + 1; 174 memcpy(&event[pos], hfp_connection->line_buffer, alpha_len); 175 pos += alpha_len; 176 event[pos++] = 0; 177 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 178 } 179 180 static void hfp_hf_emit_enhanced_call_status(const hfp_connection_t * hfp_connection){ 181 if (hfp_hf_callback == NULL) return; 182 183 uint16_t bnip_number_len = (uint16_t) strlen((const char *) hfp_connection->bnip_number); 184 uint8_t event[11 + HFP_BNEP_NUM_MAX_SIZE]; 185 event[0] = HCI_EVENT_HFP_META; 186 event[1] = 10 + bnip_number_len + 1; 187 event[2] = HFP_SUBEVENT_ENHANCED_CALL_STATUS; 188 little_endian_store_16(event, 3, hfp_connection->acl_handle); 189 event[5] = hfp_connection->clcc_idx; 190 event[6] = hfp_connection->clcc_dir; 191 event[7] = hfp_connection->clcc_status; 192 event[8] = hfp_connection->clcc_mode; 193 event[9] = hfp_connection->clcc_mpty; 194 event[10] = hfp_connection->bnip_type; 195 memcpy(&event[11], hfp_connection->bnip_number, bnip_number_len + 1); 196 197 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 11 + bnip_number_len + 1); 198 } 199 200 static void hfp_emit_ag_indicator_mapping_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 201 if (hfp_hf_callback == NULL) return; 202 uint8_t event[8 + HFP_MAX_INDICATOR_DESC_SIZE]; 203 uint16_t indicator_len = btstack_min((uint16_t) strlen(indicator->name), HFP_MAX_INDICATOR_DESC_SIZE-1); 204 event[0] = HCI_EVENT_HFP_META; 205 event[1] = 7 + indicator_len; 206 event[2] = HFP_SUBEVENT_AG_INDICATOR_MAPPING; 207 little_endian_store_16(event, 3, hfp_connection->acl_handle); 208 event[5] = indicator->index; 209 event[6] = indicator->min_range; 210 event[7] = indicator->max_range; 211 memcpy(&event[8], indicator->name, indicator_len); 212 event[8+indicator_len] = 0; 213 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 9 + indicator_len); 214 } 215 216 static void hfp_emit_ag_indicator_status_event(const hfp_connection_t * hfp_connection, const hfp_ag_indicator_t * indicator){ 217 if (hfp_hf_callback == NULL) return; 218 uint8_t event[12+HFP_MAX_INDICATOR_DESC_SIZE]; 219 uint16_t indicator_len = btstack_min((uint16_t) strlen(indicator->name), HFP_MAX_INDICATOR_DESC_SIZE-1); 220 event[0] = HCI_EVENT_HFP_META; 221 event[1] = 11 + indicator_len; 222 event[2] = HFP_SUBEVENT_AG_INDICATOR_STATUS_CHANGED; 223 little_endian_store_16(event, 3, hfp_connection->acl_handle); 224 event[5] = indicator->index; 225 event[6] = indicator->status; 226 event[7] = indicator->min_range; 227 event[8] = indicator->max_range; 228 event[9] = indicator->mandatory; 229 event[10] = indicator->enabled; 230 event[11] = indicator->status_changed; 231 memcpy(&event[12], indicator->name, indicator_len); 232 event[12+indicator_len] = 0; 233 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 13 + indicator_len); 234 } 235 236 static void hfp_emit_network_operator_event(const hfp_connection_t * hfp_connection){ 237 if (hfp_hf_callback == NULL) return; 238 uint16_t operator_len = btstack_min((uint16_t) strlen(hfp_connection->network_operator.name), HFP_MAX_NETWORK_OPERATOR_NAME_SIZE-1); 239 uint8_t event[7+HFP_MAX_NETWORK_OPERATOR_NAME_SIZE]; 240 event[0] = HCI_EVENT_HFP_META; 241 event[1] = sizeof(event) - 2; 242 event[2] = HFP_SUBEVENT_NETWORK_OPERATOR_CHANGED; 243 little_endian_store_16(event, 3, hfp_connection->acl_handle); 244 event[5] = hfp_connection->network_operator.mode; 245 event[6] = hfp_connection->network_operator.format; 246 memcpy(&event[7], hfp_connection->network_operator.name, operator_len); 247 event[7+operator_len] = 0; 248 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 8 + operator_len); 249 } 250 251 252 static void hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection_t * hfp_connection){ 253 btstack_assert(hfp_connection != NULL); 254 uint8_t event[HFP_MAX_VR_TEXT_SIZE + 11]; 255 int pos = 0; 256 event[pos++] = HCI_EVENT_HFP_META; 257 event[pos++] = sizeof(event) - 2; 258 event[pos++] = HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE; 259 little_endian_store_16(event, pos, hfp_connection->acl_handle); 260 pos += 2; 261 little_endian_store_16(event, pos, hfp_connection->ag_msg.text_id); 262 pos += 2; 263 event[pos++] = hfp_connection->ag_msg.text_type; 264 event[pos++] = hfp_connection->ag_msg.text_operation; 265 266 // length, zero ending is already in message 267 uint8_t * value = &hfp_connection->line_buffer[0]; 268 uint16_t value_length = hfp_connection->ag_vra_msg_length; 269 270 little_endian_store_16(event, pos, value_length); 271 pos += 2; 272 memcpy(&event[pos], value, value_length); 273 pos += value_length; 274 275 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, pos); 276 } 277 278 static void hfp_hf_emit_custom_command_event(hfp_connection_t * hfp_connection){ 279 btstack_assert(sizeof(hfp_connection->line_buffer) < (255-5)); 280 281 uint16_t line_len = strlen((const char*)hfp_connection->line_buffer) + 1; 282 uint8_t event[7 + sizeof(hfp_connection->line_buffer)]; 283 event[0] = HCI_EVENT_HFP_META; 284 event[1] = 5 + line_len; 285 event[2] = HFP_SUBEVENT_CUSTOM_AT_COMMAND; 286 little_endian_store_16(event, 3, hfp_connection->acl_handle); 287 little_endian_store_16(event, 5, hfp_connection->custom_at_command_id); 288 memcpy(&event[7], hfp_connection->line_buffer, line_len); 289 (*hfp_hf_callback)(HCI_EVENT_PACKET, 0, event, 7 + line_len); 290 } 291 292 /* send commands */ 293 294 static inline int hfp_hf_send_cmd(uint16_t cid, const char * cmd){ 295 char buffer[20]; 296 snprintf(buffer, sizeof(buffer), "AT%s\r", cmd); 297 return send_str_over_rfcomm(cid, buffer); 298 } 299 300 static inline int hfp_hf_send_cmd_with_mark(uint16_t cid, const char * cmd, const char * mark){ 301 char buffer[20]; 302 snprintf(buffer, sizeof(buffer), "AT%s%s\r", cmd, mark); 303 return send_str_over_rfcomm(cid, buffer); 304 } 305 306 static inline int hfp_hf_send_cmd_with_int(uint16_t cid, const char * cmd, uint16_t value){ 307 char buffer[40]; 308 snprintf(buffer, sizeof(buffer), "AT%s=%d\r", cmd, value); 309 return send_str_over_rfcomm(cid, buffer); 310 } 311 312 static int hfp_hf_cmd_notify_on_codecs(uint16_t cid){ 313 char buffer[30]; 314 const int size = sizeof(buffer); 315 int offset = snprintf(buffer, size, "AT%s=", HFP_AVAILABLE_CODECS); 316 offset += join(buffer+offset, size-offset, hfp_hf_codecs, hfp_hf_codecs_nr); 317 offset += snprintf(buffer+offset, size-offset, "\r"); 318 return send_str_over_rfcomm(cid, buffer); 319 } 320 321 static int hfp_hf_cmd_activate_status_update_for_ag_indicator(uint16_t cid, uint32_t indicators_status, int indicators_nr){ 322 char buffer[50]; 323 const int size = sizeof(buffer); 324 int offset = snprintf(buffer, size, "AT%s=", HFP_UPDATE_ENABLE_STATUS_FOR_INDIVIDUAL_AG_INDICATORS); 325 offset += join_bitmap(buffer+offset, size-offset, indicators_status, indicators_nr); 326 offset += snprintf(buffer+offset, size-offset, "\r"); 327 return send_str_over_rfcomm(cid, buffer); 328 } 329 330 static int hfp_hf_cmd_list_supported_generic_status_indicators(uint16_t cid){ 331 char buffer[30]; 332 const int size = sizeof(buffer); 333 int offset = snprintf(buffer, size, "AT%s=", HFP_GENERIC_STATUS_INDICATOR); 334 offset += join(buffer+offset, size-offset, hfp_hf_indicators, hfp_hf_indicators_nr); 335 offset += snprintf(buffer+offset, size-offset, "\r"); 336 return send_str_over_rfcomm(cid, buffer); 337 } 338 339 static int hfp_hf_cmd_activate_status_update_for_all_ag_indicators(uint16_t cid, uint8_t activate){ 340 char buffer[20]; 341 snprintf(buffer, sizeof(buffer), "AT%s=3,0,0,%d\r", HFP_ENABLE_STATUS_UPDATE_FOR_AG_INDICATORS, activate); 342 return send_str_over_rfcomm(cid, buffer); 343 } 344 345 static int hfp_hf_initiate_outgoing_call_cmd(uint16_t cid){ 346 char buffer[40]; 347 snprintf(buffer, sizeof(buffer), "%s%s;\r", HFP_CALL_PHONE_NUMBER, hfp_hf_phone_number); 348 return send_str_over_rfcomm(cid, buffer); 349 } 350 351 static int hfp_hf_send_memory_dial_cmd(uint16_t cid, int memory_id){ 352 char buffer[40]; 353 snprintf(buffer, sizeof(buffer), "%s>%d;\r", HFP_CALL_PHONE_NUMBER, memory_id); 354 return send_str_over_rfcomm(cid, buffer); 355 } 356 357 static int hfp_hf_send_chld(uint16_t cid, unsigned int number){ 358 char buffer[40]; 359 snprintf(buffer, sizeof(buffer), "AT%s=%u\r", HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, number); 360 return send_str_over_rfcomm(cid, buffer); 361 } 362 363 static int hfp_hf_send_dtmf(uint16_t cid, char code){ 364 char buffer[20]; 365 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", HFP_TRANSMIT_DTMF_CODES, code); 366 return send_str_over_rfcomm(cid, buffer); 367 } 368 369 static int hfp_hf_cmd_ata(uint16_t cid){ 370 return send_str_over_rfcomm(cid, (char *) "ATA\r"); 371 } 372 373 static int hfp_hf_cmd_exchange_supported_features(uint16_t cid){ 374 return hfp_hf_send_cmd_with_int(cid, HFP_SUPPORTED_FEATURES, hfp_hf_supported_features); 375 } 376 377 static int hfp_hf_cmd_retrieve_indicators(uint16_t cid){ 378 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "=?"); 379 } 380 381 static int hfp_hf_cmd_retrieve_indicators_status(uint16_t cid){ 382 return hfp_hf_send_cmd_with_mark(cid, HFP_INDICATOR, "?"); 383 } 384 385 static int hfp_hf_cmd_retrieve_can_hold_call(uint16_t cid){ 386 return hfp_hf_send_cmd_with_mark(cid, HFP_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES, "=?"); 387 } 388 389 static int hfp_hf_cmd_retrieve_supported_generic_status_indicators(uint16_t cid){ 390 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "=?"); 391 } 392 393 static int hfp_hf_cmd_list_initital_supported_generic_status_indicators(uint16_t cid){ 394 return hfp_hf_send_cmd_with_mark(cid, HFP_GENERIC_STATUS_INDICATOR, "?"); 395 } 396 397 static int hfp_hf_cmd_query_operator_name_format(uint16_t cid){ 398 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "=3,0"); 399 } 400 401 static int hfp_hf_cmd_query_operator_name(uint16_t cid){ 402 return hfp_hf_send_cmd_with_mark(cid, HFP_QUERY_OPERATOR_SELECTION, "?"); 403 } 404 405 static int hfp_hf_cmd_trigger_codec_connection_setup(uint16_t cid){ 406 return hfp_hf_send_cmd(cid, HFP_TRIGGER_CODEC_CONNECTION_SETUP); 407 } 408 409 static int hfp_hf_set_microphone_gain_cmd(uint16_t cid, int gain){ 410 return hfp_hf_send_cmd_with_int(cid, HFP_SET_MICROPHONE_GAIN, gain); 411 } 412 413 static int hfp_hf_set_speaker_gain_cmd(uint16_t cid, int gain){ 414 return hfp_hf_send_cmd_with_int(cid, HFP_SET_SPEAKER_GAIN, gain); 415 } 416 417 static int hfp_hf_set_calling_line_notification_cmd(uint16_t cid, uint8_t activate){ 418 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CLIP, activate); 419 } 420 421 static int hfp_hf_set_voice_recognition_notification_cmd(uint16_t cid, uint8_t activate){ 422 return hfp_hf_send_cmd_with_int(cid, HFP_ACTIVATE_VOICE_RECOGNITION, activate); 423 } 424 425 static int hfp_hf_set_call_waiting_notification_cmd(uint16_t cid, uint8_t activate){ 426 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_CALL_WAITING_NOTIFICATION, activate); 427 } 428 429 static int hfp_hf_cmd_confirm_codec(uint16_t cid, uint8_t codec){ 430 return hfp_hf_send_cmd_with_int(cid, HFP_CONFIRM_COMMON_CODEC, codec); 431 } 432 433 static int hfp_hf_cmd_enable_extended_audio_gateway_error_report(uint16_t cid, uint8_t enable){ 434 return hfp_hf_send_cmd_with_int(cid, HFP_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR, enable); 435 } 436 437 static int hfp_hf_send_redial_last_number_cmd(uint16_t cid){ 438 return hfp_hf_send_cmd(cid, HFP_REDIAL_LAST_NUMBER); 439 } 440 441 static int hfp_hf_send_chup(uint16_t cid){ 442 return hfp_hf_send_cmd(cid, HFP_HANG_UP_CALL); 443 } 444 445 static int hfp_hf_send_binp(uint16_t cid){ 446 return hfp_hf_send_cmd_with_mark(cid, HFP_PHONE_NUMBER_FOR_VOICE_TAG, "=1"); 447 } 448 449 static int hfp_hf_send_clcc(uint16_t cid){ 450 return hfp_hf_send_cmd(cid, HFP_LIST_CURRENT_CALLS); 451 } 452 453 /* state machines */ 454 455 static bool hfp_hf_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 456 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return false; 457 if (hfp_connection->ok_pending) return false; 458 459 log_info("hfp_hf_run_for_context_service_level_connection state %d\n", hfp_connection->state); 460 switch (hfp_connection->state){ 461 case HFP_EXCHANGE_SUPPORTED_FEATURES: 462 hfp_hf_drop_mSBC_if_eSCO_not_supported(hfp_hf_codecs, &hfp_hf_codecs_nr); 463 hfp_connection->state = HFP_W4_EXCHANGE_SUPPORTED_FEATURES; 464 hfp_hf_cmd_exchange_supported_features(hfp_connection->rfcomm_cid); 465 break; 466 case HFP_NOTIFY_ON_CODECS: 467 hfp_connection->state = HFP_W4_NOTIFY_ON_CODECS; 468 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 469 break; 470 case HFP_RETRIEVE_INDICATORS: 471 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS; 472 hfp_hf_cmd_retrieve_indicators(hfp_connection->rfcomm_cid); 473 break; 474 case HFP_RETRIEVE_INDICATORS_STATUS: 475 hfp_connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS; 476 hfp_hf_cmd_retrieve_indicators_status(hfp_connection->rfcomm_cid); 477 break; 478 case HFP_ENABLE_INDICATORS_STATUS_UPDATE: 479 hfp_connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE; 480 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, 1); 481 break; 482 case HFP_RETRIEVE_CAN_HOLD_CALL: 483 hfp_connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL; 484 hfp_hf_cmd_retrieve_can_hold_call(hfp_connection->rfcomm_cid); 485 break; 486 case HFP_LIST_GENERIC_STATUS_INDICATORS: 487 hfp_connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS; 488 hfp_hf_cmd_list_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 489 break; 490 case HFP_RETRIEVE_GENERIC_STATUS_INDICATORS: 491 hfp_connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS; 492 hfp_hf_cmd_retrieve_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 493 break; 494 case HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 495 hfp_connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 496 hfp_hf_cmd_list_initital_supported_generic_status_indicators(hfp_connection->rfcomm_cid); 497 break; 498 default: 499 return false; 500 } 501 return true; 502 } 503 504 505 static bool hfp_hf_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 506 if (hfp_connection->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return false; 507 if (hfp_connection->ok_pending){ 508 return false; 509 } 510 511 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 512 hfp_connection->ok_pending = 1; 513 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, hfp_connection->enable_status_update_for_ag_indicators); 514 return true; 515 }; 516 517 if (hfp_connection->change_status_update_for_individual_ag_indicators){ 518 hfp_connection->ok_pending = 1; 519 hfp_hf_cmd_activate_status_update_for_ag_indicator(hfp_connection->rfcomm_cid, 520 hfp_connection->ag_indicators_status_update_bitmap, 521 hfp_connection->ag_indicators_nr); 522 return true; 523 } 524 525 switch (hfp_connection->hf_query_operator_state){ 526 case HFP_HF_QUERY_OPERATOR_SET_FORMAT: 527 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK; 528 hfp_connection->ok_pending = 1; 529 hfp_hf_cmd_query_operator_name_format(hfp_connection->rfcomm_cid); 530 return true; 531 case HFP_HF_QUERY_OPERATOR_SEND_QUERY: 532 hfp_connection->hf_query_operator_state = HPF_HF_QUERY_OPERATOR_W4_RESULT; 533 hfp_connection->ok_pending = 1; 534 hfp_hf_cmd_query_operator_name(hfp_connection->rfcomm_cid); 535 return true; 536 default: 537 break; 538 } 539 540 if (hfp_connection->enable_extended_audio_gateway_error_report){ 541 hfp_connection->ok_pending = 1; 542 hfp_hf_cmd_enable_extended_audio_gateway_error_report(hfp_connection->rfcomm_cid, hfp_connection->enable_extended_audio_gateway_error_report); 543 return true; 544 } 545 546 return false; 547 } 548 549 static bool hfp_hf_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 550 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 551 return false; 552 } 553 554 if (hfp_connection->ok_pending == 1){ 555 return false; 556 } 557 // voice recognition activated from AG 558 if (hfp_connection->command == HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION){ 559 switch(hfp_connection->vra_state_requested){ 560 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 561 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 562 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 563 // ignore AG command, continue to wait for OK 564 return false; 565 566 default: 567 if (hfp_connection->ag_vra_msg_length > 0){ 568 hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection); 569 hfp_connection->ag_vra_msg_length = 0; 570 break; 571 } 572 switch(hfp_connection->ag_vra_state){ 573 case HFP_VOICE_RECOGNITION_STATE_AG_READY: 574 switch (hfp_connection->ag_vra_status){ 575 case 0: 576 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 577 break; 578 case 1: 579 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 580 break; 581 case 2: 582 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 583 break; 584 default: 585 break; 586 } 587 break; 588 default: 589 // state messages from AG 590 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 591 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 592 break; 593 } 594 break; 595 } 596 hfp_connection->command = HFP_CMD_NONE; 597 } 598 599 switch (hfp_connection->vra_state_requested){ 600 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 601 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 602 hfp_connection->ok_pending = 1; 603 hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 0); 604 return true; 605 606 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 607 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 608 hfp_connection->ok_pending = 1; 609 hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 1); 610 return true; 611 612 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 613 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 614 hfp_connection->ok_pending = 1; 615 hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 2); 616 return true; 617 618 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 619 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 620 hfp_connection->vra_state_requested = hfp_connection->vra_state; 621 hfp_connection->activate_voice_recognition = false; 622 if (hfp_connection->activate_voice_recognition){ 623 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 624 hfp_hf_activate_voice_recognition(hfp_connection->acl_handle); 625 } else { 626 hfp_emit_voice_recognition_disabled(hfp_connection, ERROR_CODE_SUCCESS); 627 } 628 break; 629 630 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 631 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 632 hfp_connection->vra_state_requested = hfp_connection->vra_state; 633 hfp_connection->activate_voice_recognition = false; 634 if (hfp_connection->deactivate_voice_recognition){ 635 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 636 } else { 637 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 638 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 639 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 640 } else { 641 // postpone VRA event to simplify application logic 642 hfp_connection->emit_vra_enabled_after_audio_established = true; 643 } 644 } 645 break; 646 647 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 648 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 649 hfp_connection->vra_state_requested = hfp_connection->vra_state; 650 hfp_connection->activate_voice_recognition = false; 651 if (hfp_connection->deactivate_voice_recognition){ 652 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 653 } else { 654 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 655 } 656 break; 657 658 default: 659 break; 660 } 661 return false; 662 } 663 664 665 static bool codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 666 if (hfp_connection->ok_pending) return false; 667 668 if (hfp_connection->trigger_codec_exchange){ 669 hfp_connection->trigger_codec_exchange = false; 670 671 hfp_connection->ok_pending = 1; 672 hfp_hf_cmd_trigger_codec_connection_setup(hfp_connection->rfcomm_cid); 673 return true; 674 } 675 676 if (hfp_connection->hf_send_codec_confirm){ 677 hfp_connection->hf_send_codec_confirm = false; 678 679 hfp_connection->ok_pending = 1; 680 hfp_hf_cmd_confirm_codec(hfp_connection->rfcomm_cid, hfp_connection->codec_confirmed); 681 return true; 682 } 683 684 if (hfp_connection->hf_send_supported_codecs){ 685 hfp_connection->hf_send_supported_codecs = false; 686 687 hfp_connection->ok_pending = 1; 688 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 689 return true; 690 } 691 692 return false; 693 } 694 695 static bool hfp_hf_run_for_audio_connection(hfp_connection_t * hfp_connection){ 696 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 697 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return false; 698 699 if (hfp_connection->release_audio_connection){ 700 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 701 hfp_connection->release_audio_connection = 0; 702 gap_disconnect(hfp_connection->sco_handle); 703 return true; 704 } 705 706 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return false; 707 708 // run codecs exchange 709 bool done = codecs_exchange_state_machine(hfp_connection); 710 if (done) return true; 711 712 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return false; 713 if (hfp_sco_setup_active()) return false; 714 if (hfp_connection->establish_audio_connection){ 715 hfp_connection->state = HFP_W4_SCO_CONNECTED; 716 hfp_connection->establish_audio_connection = 0; 717 hfp_setup_synchronous_connection(hfp_connection); 718 return true; 719 } 720 return false; 721 } 722 723 724 static bool call_setup_state_machine(hfp_connection_t * hfp_connection){ 725 726 if (hfp_connection->ok_pending) return false; 727 728 if (hfp_connection->hf_answer_incoming_call){ 729 hfp_connection->hf_answer_incoming_call = 0; 730 hfp_hf_cmd_ata(hfp_connection->rfcomm_cid); 731 return true; 732 } 733 return false; 734 } 735 736 static void hfp_hf_run_for_context(hfp_connection_t * hfp_connection){ 737 738 btstack_assert(hfp_connection != NULL); 739 btstack_assert(hfp_connection->local_role == HFP_ROLE_HF); 740 741 // during SDP query, RFCOMM CID is not set 742 if (hfp_connection->rfcomm_cid == 0) return; 743 744 // emit postponed VRA event 745 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->emit_vra_enabled_after_audio_established){ 746 hfp_connection->emit_vra_enabled_after_audio_established = false; 747 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 748 } 749 750 // assert command could be sent 751 if (hci_can_send_command_packet_now() == 0) return; 752 753 #ifdef ENABLE_CC256X_ASSISTED_HFP 754 // WBS Disassociate 755 if (hfp_connection->cc256x_send_wbs_disassociate){ 756 hfp_connection->cc256x_send_wbs_disassociate = false; 757 hci_send_cmd(&hci_ti_wbs_disassociate); 758 return; 759 } 760 // Write Codec Config 761 if (hfp_connection->cc256x_send_write_codec_config){ 762 hfp_connection->cc256x_send_write_codec_config = false; 763 hfp_cc256x_write_codec_config(hfp_connection); 764 return; 765 } 766 // WBS Associate 767 if (hfp_connection->cc256x_send_wbs_associate){ 768 hfp_connection->cc256x_send_wbs_associate = false; 769 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 770 return; 771 } 772 #endif 773 #ifdef ENABLE_BCM_PCM_WBS 774 // Enable WBS 775 if (hfp_connection->bcm_send_enable_wbs){ 776 hfp_connection->bcm_send_enable_wbs = false; 777 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 778 return; 779 } 780 // Write I2S/PCM params 781 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 782 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 783 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 784 return; 785 } 786 // Disable WBS 787 if (hfp_connection->bcm_send_disable_wbs){ 788 hfp_connection->bcm_send_disable_wbs = false; 789 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 790 return; 791 } 792 #endif 793 #ifdef ENABLE_RTK_PCM_WBS 794 if (hfp_connection->rtk_send_sco_config){ 795 hfp_connection->rtk_send_sco_config = false; 796 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){ 797 log_info("RTK SCO: 16k + mSBC"); 798 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x00, 0x00, 0x41); 799 } else { 800 log_info("RTK SCO: 16k + CVSD"); 801 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x0c, 0x00, 0x01); 802 } 803 return; 804 } 805 #endif 806 #ifdef ENABLE_NXP_PCM_WBS 807 if (hfp_connection->nxp_start_audio_handle != HCI_CON_HANDLE_INVALID){ 808 hci_con_handle_t sco_handle = hfp_connection->nxp_start_audio_handle; 809 hfp_connection->nxp_start_audio_handle = HCI_CON_HANDLE_INVALID; 810 hci_send_cmd(&hci_nxp_host_pcm_i2s_audio_config, 0, 0, sco_handle, 0); 811 return; 812 } 813 if (hfp_connection->nxp_stop_audio_handle != HCI_CON_HANDLE_INVALID){ 814 hci_con_handle_t sco_handle = hfp_connection->nxp_stop_audio_handle; 815 hfp_connection->nxp_stop_audio_handle = HCI_CON_HANDLE_INVALID; 816 hci_send_cmd(&hci_nxp_host_pcm_i2s_audio_config, 1, 0, sco_handle, 0); 817 return; 818 } 819 #endif 820 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 821 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 822 hfp_finalize_connection_context(hfp_connection); 823 return; 824 } 825 #endif 826 827 if (hfp_connection->accept_sco && (hfp_sco_setup_active() == false)){ 828 bool incoming_eSCO = hfp_connection->accept_sco == 2; 829 // notify about codec selection if not done already 830 if (hfp_connection->negotiated_codec == 0){ 831 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 832 } 833 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 834 return; 835 } 836 837 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 838 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 839 return; 840 } 841 842 // we can send at least an RFCOMM packet or a HCI Command now 843 844 bool done = hfp_hf_run_for_context_service_level_connection(hfp_connection); 845 if (!done){ 846 done = hfp_hf_run_for_context_service_level_connection_queries(hfp_connection); 847 } 848 if (!done){ 849 done = hfp_hf_run_for_audio_connection(hfp_connection); 850 } 851 if (!done){ 852 done = hfp_hf_voice_recognition_state_machine(hfp_connection); 853 } 854 if (!done){ 855 done = call_setup_state_machine(hfp_connection); 856 } 857 858 // don't send a new command while ok still pending or SLC is not established 859 if (hfp_connection->ok_pending || (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED)){ 860 return; 861 } 862 863 if (hfp_connection->send_microphone_gain){ 864 hfp_connection->send_microphone_gain = 0; 865 hfp_connection->ok_pending = 1; 866 hfp_hf_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 867 return; 868 } 869 870 if (hfp_connection->send_speaker_gain){ 871 hfp_connection->send_speaker_gain = 0; 872 hfp_connection->ok_pending = 1; 873 hfp_hf_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 874 return; 875 } 876 877 if (hfp_connection->hf_deactivate_calling_line_notification){ 878 hfp_connection->hf_deactivate_calling_line_notification = 0; 879 hfp_connection->ok_pending = 1; 880 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 0); 881 return; 882 } 883 884 if (hfp_connection->hf_activate_calling_line_notification){ 885 hfp_connection->hf_activate_calling_line_notification = 0; 886 hfp_connection->ok_pending = 1; 887 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 1); 888 return; 889 } 890 891 if (hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction){ 892 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 0; 893 hfp_connection->response_pending_for_command = HFP_CMD_TURN_OFF_EC_AND_NR; 894 hfp_connection->ok_pending = 1; 895 hfp_hf_send_cmd_with_int(hfp_connection->rfcomm_cid, HFP_TURN_OFF_EC_AND_NR, 0); 896 return; 897 } 898 899 if (hfp_connection->hf_deactivate_call_waiting_notification){ 900 hfp_connection->hf_deactivate_call_waiting_notification = 0; 901 hfp_connection->ok_pending = 1; 902 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 0); 903 return; 904 } 905 906 if (hfp_connection->hf_activate_call_waiting_notification){ 907 hfp_connection->hf_activate_call_waiting_notification = 0; 908 hfp_connection->ok_pending = 1; 909 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 1); 910 return; 911 } 912 913 if (hfp_connection->hf_initiate_outgoing_call){ 914 hfp_connection->hf_initiate_outgoing_call = 0; 915 hfp_connection->ok_pending = 1; 916 hfp_hf_initiate_outgoing_call_cmd(hfp_connection->rfcomm_cid); 917 return; 918 } 919 920 if (hfp_connection->hf_initiate_memory_dialing){ 921 hfp_connection->hf_initiate_memory_dialing = 0; 922 hfp_connection->ok_pending = 1; 923 hfp_hf_send_memory_dial_cmd(hfp_connection->rfcomm_cid, hfp_connection->memory_id); 924 return; 925 } 926 927 if (hfp_connection->hf_initiate_redial_last_number){ 928 hfp_connection->hf_initiate_redial_last_number = 0; 929 hfp_connection->ok_pending = 1; 930 hfp_hf_send_redial_last_number_cmd(hfp_connection->rfcomm_cid); 931 return; 932 } 933 934 if (hfp_connection->hf_send_chup){ 935 hfp_connection->hf_send_chup = 0; 936 hfp_connection->ok_pending = 1; 937 hfp_hf_send_chup(hfp_connection->rfcomm_cid); 938 return; 939 } 940 941 if (hfp_connection->hf_send_chld_0){ 942 hfp_connection->hf_send_chld_0 = 0; 943 hfp_connection->ok_pending = 1; 944 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 0); 945 return; 946 } 947 948 if (hfp_connection->hf_send_chld_1){ 949 hfp_connection->hf_send_chld_1 = 0; 950 hfp_connection->ok_pending = 1; 951 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 1); 952 return; 953 } 954 955 if (hfp_connection->hf_send_chld_2){ 956 hfp_connection->hf_send_chld_2 = 0; 957 hfp_connection->ok_pending = 1; 958 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 2); 959 return; 960 } 961 962 if (hfp_connection->hf_send_chld_3){ 963 hfp_connection->hf_send_chld_3 = 0; 964 hfp_connection->ok_pending = 1; 965 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 3); 966 return; 967 } 968 969 if (hfp_connection->hf_send_chld_4){ 970 hfp_connection->hf_send_chld_4 = 0; 971 hfp_connection->ok_pending = 1; 972 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 4); 973 return; 974 } 975 976 if (hfp_connection->hf_send_chld_x){ 977 hfp_connection->hf_send_chld_x = 0; 978 hfp_connection->ok_pending = 1; 979 hfp_hf_send_chld(hfp_connection->rfcomm_cid, hfp_connection->hf_send_chld_x_index); 980 return; 981 } 982 983 if (hfp_connection->hf_send_dtmf_code){ 984 char code = hfp_connection->hf_send_dtmf_code; 985 hfp_connection->hf_send_dtmf_code = 0; 986 hfp_connection->ok_pending = 1; 987 hfp_hf_send_dtmf(hfp_connection->rfcomm_cid, code); 988 // notify client that dtmf was sent 989 char buffer[2]; 990 buffer[0] = code; 991 buffer[1] = 0; 992 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 993 return; 994 } 995 996 if (hfp_connection->hf_send_binp){ 997 hfp_connection->hf_send_binp = 0; 998 hfp_connection->ok_pending = 1; 999 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 1000 return; 1001 } 1002 1003 if (hfp_connection->hf_send_clcc){ 1004 hfp_connection->hf_send_clcc = 0; 1005 hfp_connection->ok_pending = 1; 1006 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 1007 return; 1008 } 1009 1010 if (hfp_connection->hf_send_rrh){ 1011 hfp_connection->hf_send_rrh = 0; 1012 char buffer[20]; 1013 switch (hfp_connection->hf_send_rrh_command){ 1014 case '?': 1015 snprintf(buffer, sizeof(buffer), "AT%s?\r", 1016 HFP_RESPONSE_AND_HOLD); 1017 buffer[sizeof(buffer) - 1] = 0; 1018 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1019 return; 1020 case '0': 1021 case '1': 1022 case '2': 1023 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", 1024 HFP_RESPONSE_AND_HOLD, 1025 hfp_connection->hf_send_rrh_command); 1026 buffer[sizeof(buffer) - 1] = 0; 1027 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1028 return; 1029 default: 1030 break; 1031 } 1032 return; 1033 } 1034 1035 if (hfp_connection->hf_send_cnum){ 1036 hfp_connection->hf_send_cnum = 0; 1037 char buffer[20]; 1038 snprintf(buffer, sizeof(buffer), "AT%s\r", 1039 HFP_SUBSCRIBER_NUMBER_INFORMATION); 1040 buffer[sizeof(buffer) - 1] = 0; 1041 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1042 return; 1043 } 1044 1045 // update HF indicators 1046 if (hfp_connection->generic_status_update_bitmap){ 1047 int i; 1048 for (i=0; i < hfp_hf_indicators_nr; i++){ 1049 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 1050 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 1051 if (hfp_connection->generic_status_indicators[i].state){ 1052 hfp_connection->ok_pending = 1; 1053 char buffer[30]; 1054 snprintf(buffer, sizeof(buffer), "AT%s=%u,%u\r", 1055 HFP_TRANSFER_HF_INDICATOR_STATUS, 1056 hfp_hf_indicators[i], 1057 (unsigned int)hfp_hf_indicators_value[i]); 1058 buffer[sizeof(buffer) - 1] = 0; 1059 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1060 } else { 1061 log_info("Not sending HF indicator %u as it is disabled", hfp_hf_indicators[i]); 1062 } 1063 return; 1064 } 1065 } 1066 } 1067 1068 if (hfp_connection->send_custom_message != NULL){ 1069 const char * message = hfp_connection->send_custom_message; 1070 hfp_connection->send_custom_message = NULL; 1071 hfp_connection->ok_pending = 1; 1072 hfp_connection->response_pending_for_command = HFP_CMD_CUSTOM_MESSAGE; 1073 send_str_over_rfcomm(hfp_connection->rfcomm_cid, message); 1074 return; 1075 } 1076 1077 if (done) return; 1078 // deal with disconnect 1079 switch (hfp_connection->state){ 1080 case HFP_W2_DISCONNECT_RFCOMM: 1081 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1082 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1083 break; 1084 1085 default: 1086 break; 1087 } 1088 } 1089 1090 static void hfp_hf_slc_established(hfp_connection_t * hfp_connection){ 1091 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 1092 1093 hfp_emit_slc_connection_event(hfp_connection->local_role, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 1094 1095 uint8_t i; 1096 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1097 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1098 } 1099 1100 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1101 hfp_connection->ag_indicators[i].status_changed = 0; 1102 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1103 } 1104 1105 // restore volume settings 1106 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 1107 hfp_connection->send_speaker_gain = 1; 1108 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 1109 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 1110 hfp_connection->send_microphone_gain = 1; 1111 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 1112 } 1113 1114 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 1115 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_hf_codecs_nr, hfp_hf_codecs)){ 1116 // Codec supported, confirm 1117 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1118 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1119 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 1120 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 1121 1122 hfp_connection->hf_send_codec_confirm = true; 1123 } else { 1124 // Codec not supported, send supported codecs 1125 hfp_connection->codec_confirmed = 0; 1126 hfp_connection->suggested_codec = 0; 1127 hfp_connection->negotiated_codec = 0; 1128 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1129 1130 hfp_connection->hf_send_supported_codecs = true; 1131 } 1132 } 1133 1134 static bool hfp_hf_switch_on_ok_pending(hfp_connection_t *hfp_connection, uint8_t status){ 1135 bool event_emited = true; 1136 1137 // cache state and reset 1138 hfp_command_t response_pending_for_command = hfp_connection->response_pending_for_command; 1139 hfp_connection->response_pending_for_command = HFP_CMD_NONE; 1140 hfp_connection->command = HFP_CMD_NONE; 1141 hfp_connection->ok_pending = 0; 1142 1143 switch (response_pending_for_command){ 1144 case HFP_CMD_TURN_OFF_EC_AND_NR: 1145 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 1146 break; 1147 case HFP_CMD_CUSTOM_MESSAGE: 1148 hfp_emit_event(hfp_connection, HFP_SUBEVENT_CUSTOM_AT_MESSAGE_SENT, status); 1149 break; 1150 default: 1151 event_emited = false; 1152 1153 switch (hfp_connection->state){ 1154 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 1155 if (has_codec_negotiation_feature(hfp_connection)){ 1156 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 1157 break; 1158 } 1159 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1160 break; 1161 1162 case HFP_W4_NOTIFY_ON_CODECS: 1163 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1164 break; 1165 1166 case HFP_W4_RETRIEVE_INDICATORS: 1167 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 1168 break; 1169 1170 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 1171 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 1172 break; 1173 1174 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 1175 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 1176 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 1177 break; 1178 } 1179 if (has_hf_indicators_feature(hfp_connection)){ 1180 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1181 break; 1182 } 1183 hfp_hf_slc_established(hfp_connection); 1184 break; 1185 1186 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 1187 if (has_hf_indicators_feature(hfp_connection)){ 1188 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1189 break; 1190 } 1191 hfp_hf_slc_established(hfp_connection); 1192 break; 1193 1194 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 1195 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 1196 break; 1197 1198 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 1199 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 1200 break; 1201 1202 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 1203 hfp_hf_slc_established(hfp_connection); 1204 break; 1205 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1206 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 1207 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 1208 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_SUCCESS); 1209 break; 1210 } 1211 1212 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 1213 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 1214 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_SUCCESS); 1215 break; 1216 } 1217 1218 switch (hfp_connection->hf_query_operator_state){ 1219 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 1220 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1221 break; 1222 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 1223 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 1224 hfp_emit_network_operator_event(hfp_connection); 1225 break; 1226 default: 1227 break; 1228 } 1229 1230 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1231 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1232 break; 1233 } 1234 1235 switch (hfp_connection->codecs_state){ 1236 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1237 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1238 break; 1239 case HFP_CODECS_HF_CONFIRMED_CODEC: 1240 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1241 break; 1242 default: 1243 break; 1244 } 1245 hfp_hf_voice_recognition_state_machine(hfp_connection); 1246 break; 1247 case HFP_AUDIO_CONNECTION_ESTABLISHED: 1248 hfp_hf_voice_recognition_state_machine(hfp_connection); 1249 break; 1250 default: 1251 break; 1252 } 1253 break; 1254 } 1255 1256 return event_emited; 1257 } 1258 1259 static bool hfp_is_ringing(hfp_callsetup_status_t callsetup_status){ 1260 switch (callsetup_status){ 1261 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1262 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1263 return true; 1264 default: 1265 return false; 1266 } 1267 } 1268 1269 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1270 uint16_t i; 1271 1272 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1273 if (hfp_connection->ag_indicators[i].status_changed) { 1274 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1275 hfp_callsetup_status_t new_hf_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1276 bool ringing_old = hfp_is_ringing(hfp_hf_callsetup_status); 1277 bool ringing_new = hfp_is_ringing(new_hf_callsetup_status); 1278 if (ringing_old != ringing_new){ 1279 if (ringing_new){ 1280 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGING); 1281 } else { 1282 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGING); 1283 } 1284 } 1285 hfp_hf_callsetup_status = new_hf_callsetup_status; 1286 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1287 hfp_hf_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1288 // avoid set but not used warning 1289 (void) hfp_hf_callheld_status; 1290 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1291 hfp_call_status_t new_hf_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1292 if (hfp_hf_call_status != new_hf_call_status){ 1293 if (new_hf_call_status == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 1294 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1295 } else { 1296 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1297 } 1298 } 1299 hfp_hf_call_status = new_hf_call_status; 1300 } 1301 hfp_connection->ag_indicators[i].status_changed = 0; 1302 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1303 break; 1304 } 1305 } 1306 } 1307 1308 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1309 int value; 1310 int i; 1311 bool event_emited; 1312 1313 // last argument is still in line_buffer 1314 1315 switch (hfp_connection->command){ 1316 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1317 hfp_connection->command = HFP_CMD_NONE; 1318 hfp_hf_emit_subscriber_information(hfp_connection, 0); 1319 break; 1320 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1321 hfp_connection->command = HFP_CMD_NONE; 1322 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1323 break; 1324 case HFP_CMD_LIST_CURRENT_CALLS: 1325 hfp_connection->command = HFP_CMD_NONE; 1326 hfp_hf_emit_enhanced_call_status(hfp_connection); 1327 break; 1328 case HFP_CMD_SET_SPEAKER_GAIN: 1329 hfp_connection->command = HFP_CMD_NONE; 1330 value = btstack_atoi((char*)hfp_connection->line_buffer); 1331 hfp_hf_speaker_gain = value; 1332 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1333 break; 1334 case HFP_CMD_SET_MICROPHONE_GAIN: 1335 hfp_connection->command = HFP_CMD_NONE; 1336 value = btstack_atoi((char*)hfp_connection->line_buffer); 1337 hfp_hf_microphone_gain = value; 1338 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1339 break; 1340 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1341 hfp_connection->command = HFP_CMD_NONE; 1342 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1343 break; 1344 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1345 hfp_connection->command = HFP_CMD_NONE; 1346 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION); 1347 break; 1348 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1349 hfp_connection->command = HFP_CMD_NONE; 1350 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION); 1351 break; 1352 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1353 hfp_connection->command = HFP_CMD_NONE; 1354 hfp_connection->ok_pending = 0; 1355 hfp_connection->extended_audio_gateway_error = 0; 1356 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1357 break; 1358 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 1359 break; 1360 case HFP_CMD_ERROR: 1361 switch (hfp_connection->state){ 1362 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1363 switch (hfp_connection->codecs_state){ 1364 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1365 hfp_reset_context_flags(hfp_connection); 1366 hfp_emit_sco_connection_established(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 1367 hfp_connection->negotiated_codec, 0, 0); 1368 return; 1369 default: 1370 break; 1371 } 1372 break; 1373 default: 1374 break; 1375 } 1376 1377 // handle error response for voice activation (HF initiated) 1378 switch(hfp_connection->vra_state_requested){ 1379 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1380 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1381 break; 1382 default: 1383 if (hfp_connection->vra_state_requested == hfp_connection->vra_state){ 1384 break; 1385 } 1386 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1387 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1388 hfp_reset_context_flags(hfp_connection); 1389 return; 1390 } 1391 event_emited = hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1392 if (!event_emited){ 1393 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_UNSPECIFIED_ERROR); 1394 } 1395 hfp_reset_context_flags(hfp_connection); 1396 break; 1397 1398 case HFP_CMD_OK: 1399 hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_SUCCESS); 1400 break; 1401 case HFP_CMD_RING: 1402 hfp_connection->command = HFP_CMD_NONE; 1403 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1404 break; 1405 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1406 hfp_connection->command = HFP_CMD_NONE; 1407 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1408 break; 1409 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1410 hfp_connection->command = HFP_CMD_NONE; 1411 // report status after SLC established 1412 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 1413 break; 1414 } 1415 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1416 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1417 } 1418 break; 1419 case HFP_CMD_AG_SUGGESTED_CODEC: 1420 hfp_connection->command = HFP_CMD_NONE; 1421 hfp_hf_handle_suggested_codec(hfp_connection); 1422 break; 1423 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1424 hfp_emit_event(hfp_connection, HFP_SUBEVENT_IN_BAND_RING_TONE, get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE)); 1425 break; 1426 case HFP_CMD_CUSTOM_MESSAGE: 1427 hfp_connection->command = HFP_CMD_NONE; 1428 hfp_parser_reset_line_buffer(hfp_connection); 1429 log_info("Custom AT Command ID 0x%04x", hfp_connection->custom_at_command_id); 1430 hfp_hf_emit_custom_command_event(hfp_connection); 1431 break; 1432 default: 1433 break; 1434 } 1435 } 1436 1437 static int hfp_parser_is_end_of_line(uint8_t byte){ 1438 return (byte == '\n') || (byte == '\r'); 1439 } 1440 1441 static void hfp_hf_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 1442 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1443 if (size < 1) return; 1444 1445 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1446 #ifdef ENABLE_HFP_AT_MESSAGES 1447 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1448 #endif 1449 1450 // process messages byte-wise 1451 uint8_t pos; 1452 for (pos = 0; pos < size; pos++){ 1453 hfp_parse(hfp_connection, packet[pos], 1); 1454 // parse until end of line "\r" or "\n" 1455 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1456 hfp_hf_handle_rfcomm_command(hfp_connection); 1457 } 1458 } 1459 1460 static void hfp_hf_run(void){ 1461 btstack_linked_list_iterator_t it; 1462 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1463 while (btstack_linked_list_iterator_has_next(&it)){ 1464 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1465 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1466 hfp_hf_run_for_context(hfp_connection); 1467 } 1468 } 1469 1470 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1471 hfp_connection_t * hfp_connection; 1472 switch (packet_type){ 1473 case RFCOMM_DATA_PACKET: 1474 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1475 if (!hfp_connection) return; 1476 hfp_hf_handle_rfcomm_data(hfp_connection, packet, size); 1477 hfp_hf_run_for_context(hfp_connection); 1478 return; 1479 case HCI_EVENT_PACKET: 1480 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1481 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1482 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1483 return; 1484 } 1485 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1486 break; 1487 default: 1488 break; 1489 } 1490 hfp_hf_run(); 1491 } 1492 1493 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1494 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1495 hfp_hf_run(); 1496 } 1497 1498 static void hfp_hf_set_defaults(void){ 1499 hfp_hf_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1500 hfp_hf_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1501 hfp_hf_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1502 hfp_hf_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1503 hfp_hf_codecs_nr = 0; 1504 hfp_hf_speaker_gain = 9; 1505 hfp_hf_microphone_gain = 9; 1506 hfp_hf_indicators_nr = 0; 1507 } 1508 1509 uint8_t hfp_hf_set_default_microphone_gain(uint8_t gain){ 1510 if (gain > 15){ 1511 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 1512 } 1513 hfp_hf_microphone_gain = gain; 1514 return ERROR_CODE_SUCCESS; 1515 } 1516 1517 uint8_t hfp_hf_set_default_speaker_gain(uint8_t gain){ 1518 if (gain > 15){ 1519 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 1520 } 1521 hfp_hf_speaker_gain = gain; 1522 return ERROR_CODE_SUCCESS; 1523 } 1524 1525 uint8_t hfp_hf_init(uint8_t rfcomm_channel_nr){ 1526 uint8_t status = rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1527 if (status != ERROR_CODE_SUCCESS){ 1528 return status; 1529 } 1530 1531 hfp_init(); 1532 hfp_hf_set_defaults(); 1533 1534 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1535 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1536 1537 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1538 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1539 return ERROR_CODE_SUCCESS; 1540 } 1541 1542 void hfp_hf_deinit(void){ 1543 hfp_deinit(); 1544 hfp_hf_set_defaults(); 1545 1546 hfp_hf_callback = NULL; 1547 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1548 (void) memset(hfp_hf_phone_number, 0, sizeof(hfp_hf_phone_number)); 1549 } 1550 1551 void hfp_hf_init_codecs(uint8_t codecs_nr, const uint8_t * codecs){ 1552 btstack_assert(codecs_nr <= HFP_MAX_NUM_CODECS); 1553 1554 hfp_hf_codecs_nr = codecs_nr; 1555 uint8_t i; 1556 for (i=0; i<codecs_nr; i++){ 1557 hfp_hf_codecs[i] = codecs[i]; 1558 } 1559 } 1560 1561 void hfp_hf_init_supported_features(uint32_t supported_features){ 1562 hfp_hf_supported_features = supported_features; 1563 } 1564 1565 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1566 btstack_assert(hfp_hf_indicators_nr < HFP_MAX_NUM_INDICATORS); 1567 1568 hfp_hf_indicators_nr = indicators_nr; 1569 int i; 1570 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 1571 hfp_hf_indicators[i] = (uint8_t) indicators[i]; 1572 } 1573 1574 // store copy in hfp to setup generic_status_indicators during SLC 1575 hfp_set_hf_indicators(indicators_nr, hfp_hf_indicators); 1576 } 1577 1578 uint8_t hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1579 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1580 } 1581 1582 uint8_t hfp_hf_release_service_level_connection(hci_con_handle_t acl_handle){ 1583 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1584 if (!hfp_connection){ 1585 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1586 } 1587 hfp_trigger_release_service_level_connection(hfp_connection); 1588 hfp_hf_run_for_context(hfp_connection); 1589 return ERROR_CODE_SUCCESS; 1590 } 1591 1592 static uint8_t hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1593 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1594 if (!hfp_connection) { 1595 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1596 } 1597 hfp_connection->enable_status_update_for_ag_indicators = enable; 1598 hfp_hf_run_for_context(hfp_connection); 1599 return ERROR_CODE_SUCCESS; 1600 } 1601 1602 uint8_t hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1603 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1604 } 1605 1606 uint8_t hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1607 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1608 } 1609 1610 // TODO: returned ERROR - wrong format 1611 uint8_t hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1612 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1613 if (!hfp_connection) { 1614 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1615 } 1616 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1617 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1618 hfp_hf_run_for_context(hfp_connection); 1619 return ERROR_CODE_SUCCESS; 1620 } 1621 1622 uint8_t hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1623 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1624 if (!hfp_connection) { 1625 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1626 } 1627 1628 switch (hfp_connection->hf_query_operator_state){ 1629 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1630 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1631 break; 1632 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1633 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1634 break; 1635 default: 1636 return ERROR_CODE_COMMAND_DISALLOWED; 1637 } 1638 hfp_hf_run_for_context(hfp_connection); 1639 return ERROR_CODE_SUCCESS; 1640 } 1641 1642 static uint8_t hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1643 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1644 if (!hfp_connection) { 1645 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1646 } 1647 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1648 hfp_hf_run_for_context(hfp_connection); 1649 return ERROR_CODE_SUCCESS; 1650 } 1651 1652 1653 uint8_t hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1654 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1655 } 1656 1657 uint8_t hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1658 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1659 } 1660 1661 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1662 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_hf_supported_features & (1 << HFP_HFSF_ESCO_S4)); 1663 } 1664 1665 uint8_t hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1666 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1667 if (!hfp_connection) { 1668 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1669 } 1670 1671 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1672 return ERROR_CODE_COMMAND_DISALLOWED; 1673 } 1674 1675 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 1676 return ERROR_CODE_COMMAND_DISALLOWED; 1677 } 1678 if (has_codec_negotiation_feature(hfp_connection)) { 1679 switch (hfp_connection->codecs_state) { 1680 case HFP_CODECS_W4_AG_COMMON_CODEC: 1681 break; 1682 case HFP_CODECS_EXCHANGED: 1683 hfp_connection->trigger_codec_exchange = 1; 1684 break; 1685 default: 1686 hfp_connection->codec_confirmed = 0; 1687 hfp_connection->suggested_codec = 0; 1688 hfp_connection->negotiated_codec = 0; 1689 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1690 hfp_connection->trigger_codec_exchange = 1; 1691 break; 1692 } 1693 } else { 1694 log_info("no codec negotiation feature, use CVSD"); 1695 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1696 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1697 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1698 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1699 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1700 hfp_connection->establish_audio_connection = 1; 1701 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1702 } 1703 1704 hfp_hf_run_for_context(hfp_connection); 1705 return ERROR_CODE_SUCCESS; 1706 } 1707 1708 uint8_t hfp_hf_release_audio_connection(hci_con_handle_t acl_handle){ 1709 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1710 if (!hfp_connection) { 1711 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1712 } 1713 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 1714 return ERROR_CODE_COMMAND_DISALLOWED; 1715 } 1716 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 1717 if (status == ERROR_CODE_SUCCESS){ 1718 hfp_hf_run_for_context(hfp_connection); 1719 } 1720 return ERROR_CODE_SUCCESS; 1721 } 1722 1723 uint8_t hfp_hf_answer_incoming_call(hci_con_handle_t acl_handle){ 1724 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1725 if (!hfp_connection) { 1726 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1727 } 1728 1729 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1730 hfp_connection->hf_answer_incoming_call = 1; 1731 hfp_hf_run_for_context(hfp_connection); 1732 } else { 1733 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_hf_callsetup_status); 1734 return ERROR_CODE_COMMAND_DISALLOWED; 1735 } 1736 return ERROR_CODE_SUCCESS; 1737 } 1738 1739 uint8_t hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1740 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1741 if (!hfp_connection) { 1742 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1743 } 1744 hfp_connection->hf_send_chup = 1; 1745 hfp_hf_run_for_context(hfp_connection); 1746 return ERROR_CODE_SUCCESS; 1747 } 1748 1749 uint8_t hfp_hf_reject_incoming_call(hci_con_handle_t acl_handle){ 1750 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1751 if (!hfp_connection) { 1752 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1753 } 1754 1755 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1756 hfp_connection->hf_send_chup = 1; 1757 hfp_hf_run_for_context(hfp_connection); 1758 } 1759 return ERROR_CODE_SUCCESS; 1760 } 1761 1762 uint8_t hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1763 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1764 if (!hfp_connection) { 1765 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1766 } 1767 1768 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1769 hfp_connection->hf_send_chld_0 = 1; 1770 hfp_hf_run_for_context(hfp_connection); 1771 } 1772 return ERROR_CODE_SUCCESS; 1773 } 1774 1775 uint8_t hfp_hf_terminate_held_calls(hci_con_handle_t acl_handle){ 1776 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1777 if (!hfp_connection) { 1778 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1779 } 1780 1781 hfp_connection->hf_send_chld_0 = 1; 1782 hfp_hf_run_for_context(hfp_connection); 1783 1784 return ERROR_CODE_SUCCESS; 1785 } 1786 1787 uint8_t hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1788 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1789 if (!hfp_connection) { 1790 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1791 } 1792 1793 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1794 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1795 hfp_connection->hf_send_chld_1 = 1; 1796 hfp_hf_run_for_context(hfp_connection); 1797 } 1798 return ERROR_CODE_SUCCESS; 1799 } 1800 1801 uint8_t hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1802 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1803 if (!hfp_connection) { 1804 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1805 } 1806 1807 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1808 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1809 hfp_connection->hf_send_chld_2 = 1; 1810 hfp_hf_run_for_context(hfp_connection); 1811 } 1812 return ERROR_CODE_SUCCESS; 1813 } 1814 1815 uint8_t hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1816 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1817 if (!hfp_connection) { 1818 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1819 } 1820 1821 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1822 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1823 hfp_connection->hf_send_chld_3 = 1; 1824 hfp_hf_run_for_context(hfp_connection); 1825 } 1826 return ERROR_CODE_SUCCESS; 1827 } 1828 1829 uint8_t hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1830 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1831 if (!hfp_connection) { 1832 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1833 } 1834 1835 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1836 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1837 hfp_connection->hf_send_chld_4 = 1; 1838 hfp_hf_run_for_context(hfp_connection); 1839 } 1840 return ERROR_CODE_SUCCESS; 1841 } 1842 1843 uint8_t hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1844 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1845 if (!hfp_connection) { 1846 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1847 } 1848 1849 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1850 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1851 hfp_connection->hf_send_chld_x = 1; 1852 hfp_connection->hf_send_chld_x_index = 10 + index; 1853 hfp_hf_run_for_context(hfp_connection); 1854 } 1855 return ERROR_CODE_SUCCESS; 1856 } 1857 1858 uint8_t hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 1859 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1860 if (!hfp_connection) { 1861 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1862 } 1863 1864 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1865 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1866 hfp_connection->hf_send_chld_x = 1; 1867 hfp_connection->hf_send_chld_x_index = 20 + index; 1868 hfp_hf_run_for_context(hfp_connection); 1869 } 1870 return ERROR_CODE_SUCCESS; 1871 } 1872 1873 uint8_t hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 1874 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1875 if (!hfp_connection) { 1876 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1877 } 1878 1879 hfp_connection->hf_initiate_outgoing_call = 1; 1880 snprintf(hfp_hf_phone_number, sizeof(hfp_hf_phone_number), "%s", number); 1881 hfp_hf_run_for_context(hfp_connection); 1882 return ERROR_CODE_SUCCESS; 1883 } 1884 1885 uint8_t hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 1886 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1887 if (!hfp_connection) { 1888 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1889 } 1890 1891 hfp_connection->hf_initiate_memory_dialing = 1; 1892 hfp_connection->memory_id = memory_id; 1893 1894 hfp_hf_run_for_context(hfp_connection); 1895 return ERROR_CODE_SUCCESS; 1896 } 1897 1898 uint8_t hfp_hf_redial_last_number(hci_con_handle_t acl_handle){ 1899 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1900 if (!hfp_connection) { 1901 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1902 } 1903 1904 hfp_connection->hf_initiate_redial_last_number = 1; 1905 hfp_hf_run_for_context(hfp_connection); 1906 return ERROR_CODE_SUCCESS; 1907 } 1908 1909 uint8_t hfp_hf_activate_call_waiting_notification(hci_con_handle_t acl_handle){ 1910 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1911 if (!hfp_connection) { 1912 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1913 } 1914 1915 hfp_connection->hf_activate_call_waiting_notification = 1; 1916 hfp_hf_run_for_context(hfp_connection); 1917 return ERROR_CODE_SUCCESS; 1918 } 1919 1920 1921 uint8_t hfp_hf_deactivate_call_waiting_notification(hci_con_handle_t acl_handle){ 1922 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1923 if (!hfp_connection) { 1924 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1925 } 1926 1927 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1928 hfp_hf_run_for_context(hfp_connection); 1929 return ERROR_CODE_SUCCESS; 1930 } 1931 1932 1933 uint8_t hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1934 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1935 if (!hfp_connection) { 1936 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1937 } 1938 1939 hfp_connection->hf_activate_calling_line_notification = 1; 1940 hfp_hf_run_for_context(hfp_connection); 1941 return ERROR_CODE_SUCCESS; 1942 } 1943 1944 uint8_t hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1945 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1946 if (!hfp_connection) { 1947 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1948 } 1949 1950 hfp_connection->hf_deactivate_calling_line_notification = 1; 1951 hfp_hf_run_for_context(hfp_connection); 1952 return ERROR_CODE_SUCCESS; 1953 } 1954 1955 uint8_t hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1956 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1957 if (!hfp_connection) { 1958 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1959 } 1960 if (get_bit(hfp_connection->remote_supported_features, HFP_AGSF_EC_NR_FUNCTION) == 0){ 1961 return ERROR_CODE_COMMAND_DISALLOWED; 1962 } 1963 1964 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1965 hfp_hf_run_for_context(hfp_connection); 1966 return ERROR_CODE_SUCCESS; 1967 } 1968 1969 uint8_t hfp_hf_activate_voice_recognition(hci_con_handle_t acl_handle){ 1970 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1971 if (!hfp_connection) { 1972 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1973 } 1974 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1975 return ERROR_CODE_COMMAND_DISALLOWED; 1976 } 1977 1978 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1979 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1980 if (!enhanced_vra_supported && !legacy_vra_supported){ 1981 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1982 } 1983 1984 switch (hfp_connection->vra_state){ 1985 case HFP_VRA_VOICE_RECOGNITION_OFF: 1986 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1987 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 1988 hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 1989 break; 1990 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1991 hfp_connection->activate_voice_recognition = true; 1992 break; 1993 default: 1994 return ERROR_CODE_COMMAND_DISALLOWED; 1995 } 1996 1997 hfp_hf_run_for_context(hfp_connection); 1998 return ERROR_CODE_SUCCESS; 1999 } 2000 2001 uint8_t hfp_hf_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 2002 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2003 if (!hfp_connection) { 2004 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2005 } 2006 2007 if (hfp_connection->emit_vra_enabled_after_audio_established){ 2008 return ERROR_CODE_COMMAND_DISALLOWED; 2009 } 2010 2011 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 2012 return ERROR_CODE_COMMAND_DISALLOWED; 2013 } 2014 2015 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 2016 if (!enhanced_vra_supported){ 2017 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2018 } 2019 2020 switch (hfp_connection->vra_state){ 2021 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 2022 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2023 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 2024 break; 2025 default: 2026 return ERROR_CODE_COMMAND_DISALLOWED; 2027 } 2028 2029 hfp_hf_run_for_context(hfp_connection); 2030 return ERROR_CODE_SUCCESS; 2031 } 2032 2033 2034 uint8_t hfp_hf_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2035 // return deactivate_voice_recognition(acl_handle, false); 2036 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2037 if (!hfp_connection) { 2038 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2039 } 2040 2041 if (hfp_connection->emit_vra_enabled_after_audio_established){ 2042 return ERROR_CODE_COMMAND_DISALLOWED; 2043 } 2044 2045 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 2046 hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 2047 return ERROR_CODE_COMMAND_DISALLOWED; 2048 } 2049 2050 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 2051 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 2052 if (!enhanced_vra_supported && !legacy_vra_supported){ 2053 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2054 } 2055 2056 switch (hfp_connection->vra_state){ 2057 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 2058 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 2059 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2060 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2061 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2062 break; 2063 2064 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 2065 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2066 hfp_connection->deactivate_voice_recognition = true; 2067 break; 2068 2069 case HFP_VRA_VOICE_RECOGNITION_OFF: 2070 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 2071 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 2072 default: 2073 return ERROR_CODE_COMMAND_DISALLOWED; 2074 } 2075 2076 hfp_hf_run_for_context(hfp_connection); 2077 return ERROR_CODE_SUCCESS; 2078 } 2079 2080 uint8_t hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2081 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2082 if (!hfp_connection) { 2083 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2084 } 2085 2086 if (hfp_connection->microphone_gain == gain) { 2087 return ERROR_CODE_SUCCESS; 2088 } 2089 2090 if ((gain < 0) || (gain > 15)){ 2091 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2092 return ERROR_CODE_COMMAND_DISALLOWED; 2093 } 2094 2095 hfp_connection->microphone_gain = gain; 2096 hfp_connection->send_microphone_gain = 1; 2097 hfp_hf_run_for_context(hfp_connection); 2098 return ERROR_CODE_SUCCESS; 2099 } 2100 2101 uint8_t hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2102 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2103 if (!hfp_connection) { 2104 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2105 } 2106 2107 if (hfp_connection->speaker_gain == gain){ 2108 return ERROR_CODE_SUCCESS; 2109 } 2110 2111 if ((gain < 0) || (gain > 15)){ 2112 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2113 return ERROR_CODE_COMMAND_DISALLOWED; 2114 } 2115 2116 hfp_connection->speaker_gain = gain; 2117 hfp_connection->send_speaker_gain = 1; 2118 hfp_hf_run_for_context(hfp_connection); 2119 return ERROR_CODE_SUCCESS; 2120 } 2121 2122 uint8_t hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 2123 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2124 if (!hfp_connection) { 2125 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2126 } 2127 hfp_connection->hf_send_dtmf_code = code; 2128 hfp_hf_run_for_context(hfp_connection); 2129 return ERROR_CODE_SUCCESS; 2130 } 2131 2132 uint8_t hfp_hf_request_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2133 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2134 if (!hfp_connection) { 2135 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2136 } 2137 hfp_connection->hf_send_binp = 1; 2138 hfp_hf_run_for_context(hfp_connection); 2139 return ERROR_CODE_SUCCESS; 2140 } 2141 2142 uint8_t hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 2143 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2144 if (!hfp_connection) { 2145 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2146 } 2147 hfp_connection->hf_send_clcc = 1; 2148 hfp_hf_run_for_context(hfp_connection); 2149 return ERROR_CODE_SUCCESS; 2150 } 2151 2152 2153 uint8_t hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 2154 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2155 if (!hfp_connection) { 2156 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2157 } 2158 hfp_connection->hf_send_rrh = 1; 2159 hfp_connection->hf_send_rrh_command = '?'; 2160 hfp_hf_run_for_context(hfp_connection); 2161 return ERROR_CODE_SUCCESS; 2162 } 2163 2164 uint8_t hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 2165 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2166 if (!hfp_connection) { 2167 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2168 } 2169 hfp_connection->hf_send_rrh = 1; 2170 hfp_connection->hf_send_rrh_command = '0'; 2171 hfp_hf_run_for_context(hfp_connection); 2172 return ERROR_CODE_SUCCESS; 2173 } 2174 2175 uint8_t hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 2176 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2177 if (!hfp_connection) { 2178 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2179 } 2180 hfp_connection->hf_send_rrh = 1; 2181 hfp_connection->hf_send_rrh_command = '1'; 2182 hfp_hf_run_for_context(hfp_connection); 2183 return ERROR_CODE_SUCCESS; 2184 } 2185 2186 uint8_t hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 2187 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2188 if (!hfp_connection) { 2189 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2190 } 2191 hfp_connection->hf_send_rrh = 1; 2192 hfp_connection->hf_send_rrh_command = '2'; 2193 hfp_hf_run_for_context(hfp_connection); 2194 return ERROR_CODE_SUCCESS; 2195 } 2196 2197 uint8_t hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 2198 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2199 if (!hfp_connection) { 2200 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2201 } 2202 hfp_connection->hf_send_cnum = 1; 2203 hfp_hf_run_for_context(hfp_connection); 2204 return ERROR_CODE_SUCCESS; 2205 } 2206 2207 uint8_t hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 2208 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2209 if (!hfp_connection) { 2210 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2211 } 2212 // find index for assigned number 2213 int i; 2214 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 2215 if (hfp_hf_indicators[i] == assigned_number){ 2216 // check if connection ready and indicator subscribed 2217 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 2218 if (hfp_connection->generic_status_indicators[i].state != 0) { 2219 // set value 2220 hfp_hf_indicators_value[i] = value; 2221 // mark for update 2222 hfp_connection->generic_status_update_bitmap |= (1 << i); 2223 // send update 2224 hfp_hf_run_for_context(hfp_connection); 2225 } 2226 } 2227 return ERROR_CODE_SUCCESS; 2228 } 2229 } 2230 return ERROR_CODE_SUCCESS; 2231 } 2232 2233 uint8_t hfp_hf_send_at_command(hci_con_handle_t acl_handle, const char * at_command){ 2234 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2235 if (!hfp_connection) { 2236 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2237 } 2238 if (hfp_connection->send_custom_message != NULL){ 2239 return ERROR_CODE_COMMAND_DISALLOWED; 2240 } 2241 hfp_connection->send_custom_message = at_command; 2242 hfp_hf_run_for_context(hfp_connection); 2243 return ERROR_CODE_SUCCESS; 2244 } 2245 2246 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 2247 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2248 if (!hfp_connection) { 2249 return 0; 2250 } 2251 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 2252 } 2253 2254 void hfp_hf_create_sdp_record_with_codecs(uint8_t * service, uint32_t service_record_handle, int rfcomm_channel_nr, 2255 const char * name, uint16_t supported_features, uint8_t codecs_nr, const uint8_t * codecs){ 2256 if (!name){ 2257 name = hfp_hf_default_service_name; 2258 } 2259 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 2260 2261 // Construct SupportedFeatures for SDP bitmap: 2262 // 2263 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2264 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2265 // 2266 // Wide band speech (bit 5) and LC3-SWB (bit 8) require Codec negotiation 2267 // 2268 uint16_t sdp_features = supported_features & 0x1f; 2269 2270 if (supported_features & (1 << HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2271 sdp_features |= 1 << 6; 2272 } 2273 2274 if (supported_features & (1 << HFP_HFSF_VOICE_RECOGNITION_TEXT)){ 2275 sdp_features |= 1 << 7; 2276 } 2277 2278 // codecs 2279 if ((supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION)) != 0){ 2280 uint8_t i; 2281 for (i=0;i<codecs_nr;i++){ 2282 switch (codecs[i]){ 2283 case HFP_CODEC_MSBC: 2284 sdp_features |= 1 << 5; 2285 break; 2286 case HFP_CODEC_LC3_SWB: 2287 sdp_features |= 1 << 8; 2288 break; 2289 default: 2290 break; 2291 } 2292 } 2293 } 2294 2295 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SUPPORTED_FEATURES); 2296 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2297 } 2298 2299 // @deprecated, call new API 2300 void hfp_hf_create_sdp_record(uint8_t * service, uint32_t service_record_handle, int rfcomm_channel_nr, const char * name, uint16_t supported_features, int wide_band_speech){ 2301 uint8_t codecs_nr; 2302 const uint8_t * codecs; 2303 const uint8_t wide_band_codecs[] = { HFP_CODEC_MSBC }; 2304 if (wide_band_speech == 0){ 2305 codecs_nr = 0; 2306 codecs = NULL; 2307 } else { 2308 codecs_nr = 1; 2309 codecs = wide_band_codecs; 2310 } 2311 hfp_hf_create_sdp_record_with_codecs(service, service_record_handle, rfcomm_channel_nr, name, supported_features, codecs_nr, codecs); 2312 } 2313 2314 void hfp_hf_register_custom_at_command(hfp_custom_at_command_t * custom_at_command){ 2315 hfp_register_custom_hf_command(custom_at_command); 2316 } 2317 2318 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 2319 btstack_assert(callback != NULL); 2320 2321 hfp_hf_callback = callback; 2322 hfp_set_hf_callback(callback); 2323 } 2324