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 int hfp_hf_run_for_context_service_level_connection(hfp_connection_t * hfp_connection){ 456 if (hfp_connection->state >= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 457 if (hfp_connection->ok_pending) return 0; 458 int done = 1; 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 done = 0; 500 break; 501 } 502 return done; 503 } 504 505 506 static int hfp_hf_run_for_context_service_level_connection_queries(hfp_connection_t * hfp_connection){ 507 if (hfp_connection->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0; 508 if (hfp_connection->ok_pending){ 509 return 0; 510 } 511 int done = 0; 512 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 513 hfp_connection->ok_pending = 1; 514 done = 1; 515 hfp_hf_cmd_activate_status_update_for_all_ag_indicators(hfp_connection->rfcomm_cid, hfp_connection->enable_status_update_for_ag_indicators); 516 return done; 517 }; 518 if (hfp_connection->change_status_update_for_individual_ag_indicators){ 519 hfp_connection->ok_pending = 1; 520 done = 1; 521 hfp_hf_cmd_activate_status_update_for_ag_indicator(hfp_connection->rfcomm_cid, 522 hfp_connection->ag_indicators_status_update_bitmap, 523 hfp_connection->ag_indicators_nr); 524 return done; 525 } 526 527 switch (hfp_connection->hf_query_operator_state){ 528 case HFP_HF_QUERY_OPERATOR_SET_FORMAT: 529 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK; 530 hfp_connection->ok_pending = 1; 531 hfp_hf_cmd_query_operator_name_format(hfp_connection->rfcomm_cid); 532 return 1; 533 case HFP_HF_QUERY_OPERATOR_SEND_QUERY: 534 hfp_connection->hf_query_operator_state = HPF_HF_QUERY_OPERATOR_W4_RESULT; 535 hfp_connection->ok_pending = 1; 536 hfp_hf_cmd_query_operator_name(hfp_connection->rfcomm_cid); 537 return 1; 538 default: 539 break; 540 } 541 542 if (hfp_connection->enable_extended_audio_gateway_error_report){ 543 hfp_connection->ok_pending = 1; 544 done = 1; 545 hfp_hf_cmd_enable_extended_audio_gateway_error_report(hfp_connection->rfcomm_cid, hfp_connection->enable_extended_audio_gateway_error_report); 546 return done; 547 } 548 549 return done; 550 } 551 552 static int hfp_hf_voice_recognition_state_machine(hfp_connection_t * hfp_connection){ 553 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) { 554 return 0; 555 } 556 int done = 0; 557 558 if (hfp_connection->ok_pending == 1){ 559 return 0; 560 } 561 // voice recognition activated from AG 562 if (hfp_connection->command == HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION){ 563 switch(hfp_connection->vra_state_requested){ 564 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 565 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 566 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 567 // ignore AG command, continue to wait for OK 568 return 0; 569 570 default: 571 if (hfp_connection->ag_vra_msg_length > 0){ 572 hfp_hf_emit_enhanced_voice_recognition_text(hfp_connection); 573 hfp_connection->ag_vra_msg_length = 0; 574 break; 575 } 576 switch(hfp_connection->ag_vra_state){ 577 case HFP_VOICE_RECOGNITION_STATE_AG_READY: 578 switch (hfp_connection->ag_vra_status){ 579 case 0: 580 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 581 break; 582 case 1: 583 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 584 break; 585 case 2: 586 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 587 break; 588 default: 589 break; 590 } 591 break; 592 default: 593 // state messages from AG 594 hfp_emit_enhanced_voice_recognition_state_event(hfp_connection, ERROR_CODE_SUCCESS); 595 hfp_connection->ag_vra_state = HFP_VOICE_RECOGNITION_STATE_AG_READY; 596 break; 597 } 598 break; 599 } 600 hfp_connection->command = HFP_CMD_NONE; 601 } 602 603 604 switch (hfp_connection->vra_state_requested){ 605 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 606 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 0); 607 if (done != 0){ 608 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_OFF; 609 hfp_connection->ok_pending = 1; 610 } 611 return 1; 612 613 614 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 615 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 1); 616 if (done != 0){ 617 hfp_connection->vra_state_requested = HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED; 618 hfp_connection->ok_pending = 1; 619 return 1; 620 } 621 break; 622 623 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 624 done = hfp_hf_set_voice_recognition_notification_cmd(hfp_connection->rfcomm_cid, 2); 625 if (done != 0){ 626 hfp_connection->vra_state_requested = HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 627 hfp_connection->ok_pending = 1; 628 return 1; 629 } 630 break; 631 632 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 633 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_OFF; 634 hfp_connection->vra_state_requested = hfp_connection->vra_state; 635 hfp_connection->activate_voice_recognition = false; 636 if (hfp_connection->activate_voice_recognition){ 637 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 638 hfp_hf_activate_voice_recognition(hfp_connection->acl_handle); 639 } else { 640 hfp_emit_voice_recognition_disabled(hfp_connection, ERROR_CODE_SUCCESS); 641 } 642 break; 643 644 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 645 hfp_connection->vra_state = HFP_VRA_VOICE_RECOGNITION_ACTIVATED; 646 hfp_connection->vra_state_requested = hfp_connection->vra_state; 647 hfp_connection->activate_voice_recognition = false; 648 if (hfp_connection->deactivate_voice_recognition){ 649 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 650 } else { 651 hfp_connection->enhanced_voice_recognition_enabled = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 652 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 653 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 654 } else { 655 // postpone VRA event to simplify application logic 656 hfp_connection->emit_vra_enabled_after_audio_established = true; 657 } 658 } 659 break; 660 661 662 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 663 hfp_connection->vra_state = HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 664 hfp_connection->vra_state_requested = hfp_connection->vra_state; 665 hfp_connection->activate_voice_recognition = false; 666 if (hfp_connection->deactivate_voice_recognition){ 667 hfp_hf_deactivate_voice_recognition(hfp_connection->acl_handle); 668 } else { 669 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_SUCCESS); 670 } 671 break; 672 673 default: 674 break; 675 } 676 return done; 677 } 678 679 680 static int codecs_exchange_state_machine(hfp_connection_t * hfp_connection){ 681 if (hfp_connection->ok_pending) return 0; 682 683 if (hfp_connection->trigger_codec_exchange){ 684 hfp_connection->trigger_codec_exchange = 0; 685 686 hfp_connection->ok_pending = 1; 687 hfp_hf_cmd_trigger_codec_connection_setup(hfp_connection->rfcomm_cid); 688 return 1; 689 } 690 691 if (hfp_connection->hf_send_codec_confirm){ 692 hfp_connection->hf_send_codec_confirm = false; 693 694 hfp_connection->ok_pending = 1; 695 hfp_hf_cmd_confirm_codec(hfp_connection->rfcomm_cid, hfp_connection->codec_confirmed); 696 return 1; 697 } 698 699 if (hfp_connection->hf_send_supported_codecs){ 700 hfp_connection->hf_send_supported_codecs = false; 701 702 hfp_connection->ok_pending = 1; 703 hfp_hf_cmd_notify_on_codecs(hfp_connection->rfcomm_cid); 704 return 1; 705 } 706 707 return 0; 708 } 709 710 static int hfp_hf_run_for_audio_connection(hfp_connection_t * hfp_connection){ 711 if ((hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) || 712 (hfp_connection->state > HFP_W2_DISCONNECT_SCO)) return 0; 713 714 if (hfp_connection->release_audio_connection){ 715 hfp_connection->state = HFP_W4_SCO_DISCONNECTED; 716 hfp_connection->release_audio_connection = 0; 717 gap_disconnect(hfp_connection->sco_handle); 718 return 1; 719 } 720 721 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED) return 0; 722 723 // run codecs exchange 724 int done = codecs_exchange_state_machine(hfp_connection); 725 if (done) return 1; 726 727 if (hfp_connection->codecs_state != HFP_CODECS_EXCHANGED) return 0; 728 if (hfp_sco_setup_active()) return 0; 729 if (hci_can_send_command_packet_now() == false) return 0; 730 if (hfp_connection->establish_audio_connection){ 731 hfp_connection->state = HFP_W4_SCO_CONNECTED; 732 hfp_connection->establish_audio_connection = 0; 733 hfp_setup_synchronous_connection(hfp_connection); 734 return 1; 735 } 736 return 0; 737 } 738 739 740 static int call_setup_state_machine(hfp_connection_t * hfp_connection){ 741 742 if (hfp_connection->ok_pending) return 0; 743 744 if (hfp_connection->hf_answer_incoming_call){ 745 hfp_hf_cmd_ata(hfp_connection->rfcomm_cid); 746 hfp_connection->hf_answer_incoming_call = 0; 747 return 1; 748 } 749 return 0; 750 } 751 752 static void hfp_hf_run_for_context(hfp_connection_t * hfp_connection){ 753 754 btstack_assert(hfp_connection != NULL); 755 btstack_assert(hfp_connection->local_role == HFP_ROLE_HF); 756 757 // during SDP query, RFCOMM CID is not set 758 if (hfp_connection->rfcomm_cid == 0) return; 759 760 // emit postponed VRA event 761 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED && hfp_connection->emit_vra_enabled_after_audio_established){ 762 hfp_connection->emit_vra_enabled_after_audio_established = false; 763 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_SUCCESS); 764 } 765 766 // assert command could be sent 767 if (hci_can_send_command_packet_now() == 0) return; 768 769 #ifdef ENABLE_CC256X_ASSISTED_HFP 770 // WBS Disassociate 771 if (hfp_connection->cc256x_send_wbs_disassociate){ 772 hfp_connection->cc256x_send_wbs_disassociate = false; 773 hci_send_cmd(&hci_ti_wbs_disassociate); 774 return; 775 } 776 // Write Codec Config 777 if (hfp_connection->cc256x_send_write_codec_config){ 778 hfp_connection->cc256x_send_write_codec_config = false; 779 hfp_cc256x_write_codec_config(hfp_connection); 780 return; 781 } 782 // WBS Associate 783 if (hfp_connection->cc256x_send_wbs_associate){ 784 hfp_connection->cc256x_send_wbs_associate = false; 785 hci_send_cmd(&hci_ti_wbs_associate, hfp_connection->acl_handle); 786 return; 787 } 788 #endif 789 #ifdef ENABLE_BCM_PCM_WBS 790 // Enable WBS 791 if (hfp_connection->bcm_send_enable_wbs){ 792 hfp_connection->bcm_send_enable_wbs = false; 793 hci_send_cmd(&hci_bcm_enable_wbs, 1, 2); 794 return; 795 } 796 // Write I2S/PCM params 797 if (hfp_connection->bcm_send_write_i2spcm_interface_param){ 798 hfp_connection->bcm_send_write_i2spcm_interface_param = false; 799 hfp_bcm_write_i2spcm_interface_param(hfp_connection); 800 return; 801 } 802 // Disable WBS 803 if (hfp_connection->bcm_send_disable_wbs){ 804 hfp_connection->bcm_send_disable_wbs = false; 805 hci_send_cmd(&hci_bcm_enable_wbs, 0, 2); 806 return; 807 } 808 #endif 809 #ifdef ENABLE_RTK_PCM_WBS 810 if (hfp_connection->rtk_send_sco_config){ 811 hfp_connection->rtk_send_sco_config = false; 812 if (hfp_connection->negotiated_codec == HFP_CODEC_MSBC){ 813 log_info("RTK SCO: 16k + mSBC"); 814 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x00, 0x00, 0x41); 815 } else { 816 log_info("RTK SCO: 16k + CVSD"); 817 hci_send_cmd(&hci_rtk_configure_sco_routing, 0x81, 0x90, 0x00, 0x00, 0x1a, 0x0c, 0x0c, 0x00, 0x01); 818 } 819 return; 820 } 821 #endif 822 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 823 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 824 hfp_finalize_connection_context(hfp_connection); 825 return; 826 } 827 #endif 828 829 if (hfp_connection->accept_sco && (hfp_sco_setup_active() == false)){ 830 bool incoming_eSCO = hfp_connection->accept_sco == 2; 831 // notify about codec selection if not done already 832 if (hfp_connection->negotiated_codec == 0){ 833 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 834 } 835 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 836 return; 837 } 838 839 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 840 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 841 return; 842 } 843 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection); 844 if (!done){ 845 done = hfp_hf_run_for_context_service_level_connection_queries(hfp_connection); 846 } 847 if (!done){ 848 done = hfp_hf_run_for_audio_connection(hfp_connection); 849 } 850 if (!done){ 851 done = hfp_hf_voice_recognition_state_machine(hfp_connection); 852 } 853 if (!done){ 854 done = call_setup_state_machine(hfp_connection); 855 } 856 857 // don't send a new command while ok still pending or SLC is not established 858 if (hfp_connection->ok_pending || (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED)){ 859 return; 860 } 861 862 if (hfp_connection->send_microphone_gain){ 863 hfp_connection->send_microphone_gain = 0; 864 hfp_connection->ok_pending = 1; 865 hfp_hf_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 866 return; 867 } 868 869 if (hfp_connection->send_speaker_gain){ 870 hfp_connection->send_speaker_gain = 0; 871 hfp_connection->ok_pending = 1; 872 hfp_hf_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 873 return; 874 } 875 876 if (hfp_connection->hf_deactivate_calling_line_notification){ 877 hfp_connection->hf_deactivate_calling_line_notification = 0; 878 hfp_connection->ok_pending = 1; 879 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 0); 880 return; 881 } 882 883 if (hfp_connection->hf_activate_calling_line_notification){ 884 hfp_connection->hf_activate_calling_line_notification = 0; 885 hfp_connection->ok_pending = 1; 886 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 1); 887 return; 888 } 889 890 if (hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction){ 891 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 0; 892 hfp_connection->response_pending_for_command = HFP_CMD_TURN_OFF_EC_AND_NR; 893 hfp_connection->ok_pending = 1; 894 hfp_hf_send_cmd_with_int(hfp_connection->rfcomm_cid, HFP_TURN_OFF_EC_AND_NR, 0); 895 return; 896 } 897 898 if (hfp_connection->hf_deactivate_call_waiting_notification){ 899 hfp_connection->hf_deactivate_call_waiting_notification = 0; 900 hfp_connection->ok_pending = 1; 901 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 0); 902 return; 903 } 904 905 if (hfp_connection->hf_activate_call_waiting_notification){ 906 hfp_connection->hf_activate_call_waiting_notification = 0; 907 hfp_connection->ok_pending = 1; 908 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 1); 909 return; 910 } 911 912 if (hfp_connection->hf_initiate_outgoing_call){ 913 hfp_connection->hf_initiate_outgoing_call = 0; 914 hfp_connection->ok_pending = 1; 915 hfp_hf_initiate_outgoing_call_cmd(hfp_connection->rfcomm_cid); 916 return; 917 } 918 919 if (hfp_connection->hf_initiate_memory_dialing){ 920 hfp_connection->hf_initiate_memory_dialing = 0; 921 hfp_connection->ok_pending = 1; 922 hfp_hf_send_memory_dial_cmd(hfp_connection->rfcomm_cid, hfp_connection->memory_id); 923 return; 924 } 925 926 if (hfp_connection->hf_initiate_redial_last_number){ 927 hfp_connection->hf_initiate_redial_last_number = 0; 928 hfp_connection->ok_pending = 1; 929 hfp_hf_send_redial_last_number_cmd(hfp_connection->rfcomm_cid); 930 return; 931 } 932 933 if (hfp_connection->hf_send_chup){ 934 hfp_connection->hf_send_chup = 0; 935 hfp_connection->ok_pending = 1; 936 hfp_hf_send_chup(hfp_connection->rfcomm_cid); 937 return; 938 } 939 940 if (hfp_connection->hf_send_chld_0){ 941 hfp_connection->hf_send_chld_0 = 0; 942 hfp_connection->ok_pending = 1; 943 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 0); 944 return; 945 } 946 947 if (hfp_connection->hf_send_chld_1){ 948 hfp_connection->hf_send_chld_1 = 0; 949 hfp_connection->ok_pending = 1; 950 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 1); 951 return; 952 } 953 954 if (hfp_connection->hf_send_chld_2){ 955 hfp_connection->hf_send_chld_2 = 0; 956 hfp_connection->ok_pending = 1; 957 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 2); 958 return; 959 } 960 961 if (hfp_connection->hf_send_chld_3){ 962 hfp_connection->hf_send_chld_3 = 0; 963 hfp_connection->ok_pending = 1; 964 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 3); 965 return; 966 } 967 968 if (hfp_connection->hf_send_chld_4){ 969 hfp_connection->hf_send_chld_4 = 0; 970 hfp_connection->ok_pending = 1; 971 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 4); 972 return; 973 } 974 975 if (hfp_connection->hf_send_chld_x){ 976 hfp_connection->hf_send_chld_x = 0; 977 hfp_connection->ok_pending = 1; 978 hfp_hf_send_chld(hfp_connection->rfcomm_cid, hfp_connection->hf_send_chld_x_index); 979 return; 980 } 981 982 if (hfp_connection->hf_send_dtmf_code){ 983 char code = hfp_connection->hf_send_dtmf_code; 984 hfp_connection->hf_send_dtmf_code = 0; 985 hfp_connection->ok_pending = 1; 986 hfp_hf_send_dtmf(hfp_connection->rfcomm_cid, code); 987 // notify client that dtmf was sent 988 char buffer[2]; 989 buffer[0] = code; 990 buffer[1] = 0; 991 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 992 return; 993 } 994 995 if (hfp_connection->hf_send_binp){ 996 hfp_connection->hf_send_binp = 0; 997 hfp_connection->ok_pending = 1; 998 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 999 return; 1000 } 1001 1002 if (hfp_connection->hf_send_clcc){ 1003 hfp_connection->hf_send_clcc = 0; 1004 hfp_connection->ok_pending = 1; 1005 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 1006 return; 1007 } 1008 1009 if (hfp_connection->hf_send_rrh){ 1010 hfp_connection->hf_send_rrh = 0; 1011 char buffer[20]; 1012 switch (hfp_connection->hf_send_rrh_command){ 1013 case '?': 1014 snprintf(buffer, sizeof(buffer), "AT%s?\r", 1015 HFP_RESPONSE_AND_HOLD); 1016 buffer[sizeof(buffer) - 1] = 0; 1017 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1018 return; 1019 case '0': 1020 case '1': 1021 case '2': 1022 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", 1023 HFP_RESPONSE_AND_HOLD, 1024 hfp_connection->hf_send_rrh_command); 1025 buffer[sizeof(buffer) - 1] = 0; 1026 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1027 return; 1028 default: 1029 break; 1030 } 1031 return; 1032 } 1033 1034 if (hfp_connection->hf_send_cnum){ 1035 hfp_connection->hf_send_cnum = 0; 1036 char buffer[20]; 1037 snprintf(buffer, sizeof(buffer), "AT%s\r", 1038 HFP_SUBSCRIBER_NUMBER_INFORMATION); 1039 buffer[sizeof(buffer) - 1] = 0; 1040 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1041 return; 1042 } 1043 1044 // update HF indicators 1045 if (hfp_connection->generic_status_update_bitmap){ 1046 int i; 1047 for (i=0; i < hfp_hf_indicators_nr; i++){ 1048 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 1049 if (hfp_connection->generic_status_indicators[i].state){ 1050 hfp_connection->ok_pending = 1; 1051 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 1052 char buffer[30]; 1053 snprintf(buffer, sizeof(buffer), "AT%s=%u,%u\r", 1054 HFP_TRANSFER_HF_INDICATOR_STATUS, 1055 hfp_hf_indicators[i], 1056 (unsigned int)hfp_hf_indicators_value[i]); 1057 buffer[sizeof(buffer) - 1] = 0; 1058 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1059 } else { 1060 log_info("Not sending HF indicator %u as it is disabled", hfp_hf_indicators[i]); 1061 } 1062 return; 1063 } 1064 } 1065 } 1066 1067 if (hfp_connection->send_custom_message != NULL){ 1068 const char * message = hfp_connection->send_custom_message; 1069 hfp_connection->send_custom_message = NULL; 1070 hfp_connection->ok_pending = 1; 1071 hfp_connection->response_pending_for_command = HFP_CMD_CUSTOM_MESSAGE; 1072 send_str_over_rfcomm(hfp_connection->rfcomm_cid, message); 1073 return; 1074 } 1075 1076 if (done) return; 1077 // deal with disconnect 1078 switch (hfp_connection->state){ 1079 case HFP_W2_DISCONNECT_RFCOMM: 1080 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1081 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1082 break; 1083 1084 default: 1085 break; 1086 } 1087 } 1088 1089 static void hfp_hf_slc_established(hfp_connection_t * hfp_connection){ 1090 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 1091 1092 hfp_emit_slc_connection_event(hfp_connection->local_role, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 1093 1094 uint8_t i; 1095 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1096 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1097 } 1098 1099 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1100 hfp_connection->ag_indicators[i].status_changed = 0; 1101 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1102 } 1103 1104 // restore volume settings 1105 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 1106 hfp_connection->send_speaker_gain = 1; 1107 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 1108 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 1109 hfp_connection->send_microphone_gain = 1; 1110 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 1111 // enable all indicators 1112 for (i=0; i < hfp_hf_indicators_nr; i++){ 1113 hfp_connection->generic_status_indicators[i].uuid = hfp_hf_indicators[i]; 1114 hfp_connection->generic_status_indicators[i].state = 1; 1115 } 1116 } 1117 1118 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 1119 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_hf_codecs_nr, hfp_hf_codecs)){ 1120 // Codec supported, confirm 1121 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1122 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1123 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 1124 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 1125 1126 hfp_connection->hf_send_codec_confirm = true; 1127 } else { 1128 // Codec not supported, send supported codecs 1129 hfp_connection->codec_confirmed = 0; 1130 hfp_connection->suggested_codec = 0; 1131 hfp_connection->negotiated_codec = 0; 1132 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1133 1134 hfp_connection->hf_send_supported_codecs = true; 1135 } 1136 } 1137 1138 static bool hfp_hf_switch_on_ok_pending(hfp_connection_t *hfp_connection, uint8_t status){ 1139 bool event_emited = true; 1140 1141 // cache state and reset 1142 hfp_command_t response_pending_for_command = hfp_connection->response_pending_for_command; 1143 hfp_connection->response_pending_for_command = HFP_CMD_NONE; 1144 hfp_connection->command = HFP_CMD_NONE; 1145 hfp_connection->ok_pending = 0; 1146 1147 switch (response_pending_for_command){ 1148 case HFP_CMD_TURN_OFF_EC_AND_NR: 1149 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 1150 break; 1151 case HFP_CMD_CUSTOM_MESSAGE: 1152 hfp_emit_event(hfp_connection, HFP_SUBEVENT_CUSTOM_AT_MESSAGE_SENT, status); 1153 break; 1154 default: 1155 event_emited = false; 1156 1157 switch (hfp_connection->state){ 1158 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 1159 if (has_codec_negotiation_feature(hfp_connection)){ 1160 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 1161 break; 1162 } 1163 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1164 break; 1165 1166 case HFP_W4_NOTIFY_ON_CODECS: 1167 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1168 break; 1169 1170 case HFP_W4_RETRIEVE_INDICATORS: 1171 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 1172 break; 1173 1174 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 1175 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 1176 break; 1177 1178 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 1179 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 1180 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 1181 break; 1182 } 1183 if (has_hf_indicators_feature(hfp_connection)){ 1184 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1185 break; 1186 } 1187 hfp_hf_slc_established(hfp_connection); 1188 break; 1189 1190 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 1191 if (has_hf_indicators_feature(hfp_connection)){ 1192 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1193 break; 1194 } 1195 hfp_hf_slc_established(hfp_connection); 1196 break; 1197 1198 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 1199 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 1200 break; 1201 1202 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 1203 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 1204 break; 1205 1206 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 1207 hfp_hf_slc_established(hfp_connection); 1208 break; 1209 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1210 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 1211 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 1212 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_SUCCESS); 1213 break; 1214 } 1215 1216 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 1217 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 1218 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_SUCCESS); 1219 break; 1220 } 1221 1222 switch (hfp_connection->hf_query_operator_state){ 1223 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 1224 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1225 break; 1226 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 1227 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 1228 hfp_emit_network_operator_event(hfp_connection); 1229 break; 1230 default: 1231 break; 1232 } 1233 1234 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1235 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1236 break; 1237 } 1238 1239 switch (hfp_connection->codecs_state){ 1240 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1241 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1242 break; 1243 case HFP_CODECS_HF_CONFIRMED_CODEC: 1244 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1245 break; 1246 default: 1247 break; 1248 } 1249 hfp_hf_voice_recognition_state_machine(hfp_connection); 1250 break; 1251 case HFP_AUDIO_CONNECTION_ESTABLISHED: 1252 hfp_hf_voice_recognition_state_machine(hfp_connection); 1253 break; 1254 default: 1255 break; 1256 } 1257 break; 1258 } 1259 1260 return event_emited; 1261 } 1262 1263 static bool hfp_is_ringing(hfp_callsetup_status_t callsetup_status){ 1264 switch (callsetup_status){ 1265 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1266 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1267 return true; 1268 default: 1269 return false; 1270 } 1271 } 1272 1273 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1274 uint16_t i; 1275 1276 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1277 if (hfp_connection->ag_indicators[i].status_changed) { 1278 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1279 hfp_callsetup_status_t new_hf_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1280 bool ringing_old = hfp_is_ringing(hfp_hf_callsetup_status); 1281 bool ringing_new = hfp_is_ringing(new_hf_callsetup_status); 1282 if (ringing_old != ringing_new){ 1283 if (ringing_new){ 1284 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGING); 1285 } else { 1286 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGING); 1287 } 1288 } 1289 hfp_hf_callsetup_status = new_hf_callsetup_status; 1290 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1291 hfp_hf_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1292 // avoid set but not used warning 1293 (void) hfp_hf_callheld_status; 1294 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1295 hfp_call_status_t new_hf_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1296 if (hfp_hf_call_status != new_hf_call_status){ 1297 if (new_hf_call_status == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 1298 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1299 } else { 1300 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1301 } 1302 } 1303 hfp_hf_call_status = new_hf_call_status; 1304 } 1305 hfp_connection->ag_indicators[i].status_changed = 0; 1306 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1307 break; 1308 } 1309 } 1310 } 1311 1312 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1313 int value; 1314 int i; 1315 bool event_emited; 1316 1317 // last argument is still in line_buffer 1318 1319 switch (hfp_connection->command){ 1320 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1321 hfp_connection->command = HFP_CMD_NONE; 1322 hfp_hf_emit_subscriber_information(hfp_connection, 0); 1323 break; 1324 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1325 hfp_connection->command = HFP_CMD_NONE; 1326 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1327 break; 1328 case HFP_CMD_LIST_CURRENT_CALLS: 1329 hfp_connection->command = HFP_CMD_NONE; 1330 hfp_hf_emit_enhanced_call_status(hfp_connection); 1331 break; 1332 case HFP_CMD_SET_SPEAKER_GAIN: 1333 hfp_connection->command = HFP_CMD_NONE; 1334 value = btstack_atoi((char*)hfp_connection->line_buffer); 1335 hfp_hf_speaker_gain = value; 1336 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1337 break; 1338 case HFP_CMD_SET_MICROPHONE_GAIN: 1339 hfp_connection->command = HFP_CMD_NONE; 1340 value = btstack_atoi((char*)hfp_connection->line_buffer); 1341 hfp_hf_microphone_gain = value; 1342 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1343 break; 1344 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1345 hfp_connection->command = HFP_CMD_NONE; 1346 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1347 break; 1348 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1349 hfp_connection->command = HFP_CMD_NONE; 1350 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION); 1351 break; 1352 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1353 hfp_connection->command = HFP_CMD_NONE; 1354 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION); 1355 break; 1356 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1357 hfp_connection->command = HFP_CMD_NONE; 1358 hfp_connection->ok_pending = 0; 1359 hfp_connection->extended_audio_gateway_error = 0; 1360 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1361 break; 1362 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 1363 break; 1364 case HFP_CMD_ERROR: 1365 switch (hfp_connection->state){ 1366 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1367 switch (hfp_connection->codecs_state){ 1368 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1369 hfp_reset_context_flags(hfp_connection); 1370 hfp_emit_sco_connection_established(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 1371 hfp_connection->negotiated_codec, 0, 0); 1372 return; 1373 default: 1374 break; 1375 } 1376 break; 1377 default: 1378 break; 1379 } 1380 1381 // handle error response for voice activation (HF initiated) 1382 switch(hfp_connection->vra_state_requested){ 1383 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1384 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1385 break; 1386 default: 1387 if (hfp_connection->vra_state_requested == hfp_connection->vra_state){ 1388 break; 1389 } 1390 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1391 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1392 hfp_reset_context_flags(hfp_connection); 1393 return; 1394 } 1395 event_emited = hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1396 if (!event_emited){ 1397 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_UNSPECIFIED_ERROR); 1398 } 1399 hfp_reset_context_flags(hfp_connection); 1400 break; 1401 1402 case HFP_CMD_OK: 1403 hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_SUCCESS); 1404 break; 1405 case HFP_CMD_RING: 1406 hfp_connection->command = HFP_CMD_NONE; 1407 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1408 break; 1409 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1410 hfp_connection->command = HFP_CMD_NONE; 1411 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1412 break; 1413 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1414 hfp_connection->command = HFP_CMD_NONE; 1415 // report status after SLC established 1416 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 1417 break; 1418 } 1419 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1420 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1421 } 1422 break; 1423 case HFP_CMD_AG_SUGGESTED_CODEC: 1424 hfp_connection->command = HFP_CMD_NONE; 1425 hfp_hf_handle_suggested_codec(hfp_connection); 1426 break; 1427 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1428 hfp_emit_event(hfp_connection, HFP_SUBEVENT_IN_BAND_RING_TONE, get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE)); 1429 break; 1430 case HFP_CMD_CUSTOM_MESSAGE: 1431 hfp_connection->command = HFP_CMD_NONE; 1432 hfp_parser_reset_line_buffer(hfp_connection); 1433 log_info("Custom AT Command ID 0x%04x", hfp_connection->custom_at_command_id); 1434 hfp_hf_emit_custom_command_event(hfp_connection); 1435 break; 1436 default: 1437 break; 1438 } 1439 } 1440 1441 static int hfp_parser_is_end_of_line(uint8_t byte){ 1442 return (byte == '\n') || (byte == '\r'); 1443 } 1444 1445 static void hfp_hf_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 1446 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1447 if (size < 1) return; 1448 1449 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1450 #ifdef ENABLE_HFP_AT_MESSAGES 1451 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1452 #endif 1453 1454 // process messages byte-wise 1455 uint8_t pos; 1456 for (pos = 0; pos < size; pos++){ 1457 hfp_parse(hfp_connection, packet[pos], 1); 1458 // parse until end of line "\r" or "\n" 1459 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1460 hfp_hf_handle_rfcomm_command(hfp_connection); 1461 } 1462 } 1463 1464 static void hfp_hf_run(void){ 1465 btstack_linked_list_iterator_t it; 1466 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1467 while (btstack_linked_list_iterator_has_next(&it)){ 1468 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1469 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1470 hfp_hf_run_for_context(hfp_connection); 1471 } 1472 } 1473 1474 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1475 hfp_connection_t * hfp_connection; 1476 switch (packet_type){ 1477 case RFCOMM_DATA_PACKET: 1478 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1479 if (!hfp_connection) return; 1480 hfp_hf_handle_rfcomm_data(hfp_connection, packet, size); 1481 hfp_hf_run_for_context(hfp_connection); 1482 return; 1483 case HCI_EVENT_PACKET: 1484 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1485 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1486 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1487 return; 1488 } 1489 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1490 break; 1491 default: 1492 break; 1493 } 1494 hfp_hf_run(); 1495 } 1496 1497 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1498 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1499 hfp_hf_run(); 1500 } 1501 1502 static void hfp_hf_set_defaults(void){ 1503 hfp_hf_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1504 hfp_hf_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1505 hfp_hf_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1506 hfp_hf_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1507 hfp_hf_codecs_nr = 0; 1508 hfp_hf_speaker_gain = 9; 1509 hfp_hf_microphone_gain = 9; 1510 hfp_hf_indicators_nr = 0; 1511 } 1512 1513 uint8_t hfp_hf_set_default_microphone_gain(uint8_t gain){ 1514 if (gain > 15){ 1515 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 1516 } 1517 hfp_hf_microphone_gain = gain; 1518 return ERROR_CODE_SUCCESS; 1519 } 1520 1521 uint8_t hfp_hf_set_default_speaker_gain(uint8_t gain){ 1522 if (gain > 15){ 1523 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 1524 } 1525 hfp_hf_speaker_gain = gain; 1526 return ERROR_CODE_SUCCESS; 1527 } 1528 1529 uint8_t hfp_hf_init(uint8_t rfcomm_channel_nr){ 1530 uint8_t status = rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1531 if (status != ERROR_CODE_SUCCESS){ 1532 return status; 1533 } 1534 1535 hfp_init(); 1536 hfp_hf_set_defaults(); 1537 1538 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1539 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1540 1541 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1542 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1543 return ERROR_CODE_SUCCESS; 1544 } 1545 1546 void hfp_hf_deinit(void){ 1547 hfp_deinit(); 1548 hfp_hf_set_defaults(); 1549 1550 hfp_hf_callback = NULL; 1551 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1552 (void) memset(hfp_hf_phone_number, 0, sizeof(hfp_hf_phone_number)); 1553 } 1554 1555 void hfp_hf_init_codecs(int codecs_nr, const uint8_t * codecs){ 1556 btstack_assert(codecs_nr <= HFP_MAX_NUM_CODECS); 1557 1558 hfp_hf_codecs_nr = codecs_nr; 1559 int i; 1560 for (i=0; i<codecs_nr; i++){ 1561 hfp_hf_codecs[i] = codecs[i]; 1562 } 1563 } 1564 1565 void hfp_hf_init_supported_features(uint32_t supported_features){ 1566 hfp_hf_supported_features = supported_features; 1567 } 1568 1569 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1570 btstack_assert(hfp_hf_indicators_nr < HFP_MAX_NUM_INDICATORS); 1571 1572 hfp_hf_indicators_nr = indicators_nr; 1573 int i; 1574 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 1575 hfp_hf_indicators[i] = (uint8_t) indicators[i]; 1576 } 1577 } 1578 1579 uint8_t hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1580 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1581 } 1582 1583 uint8_t hfp_hf_release_service_level_connection(hci_con_handle_t acl_handle){ 1584 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1585 if (!hfp_connection){ 1586 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1587 } 1588 hfp_trigger_release_service_level_connection(hfp_connection); 1589 hfp_hf_run_for_context(hfp_connection); 1590 return ERROR_CODE_SUCCESS; 1591 } 1592 1593 static uint8_t hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1594 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1595 if (!hfp_connection) { 1596 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1597 } 1598 hfp_connection->enable_status_update_for_ag_indicators = enable; 1599 hfp_hf_run_for_context(hfp_connection); 1600 return ERROR_CODE_SUCCESS; 1601 } 1602 1603 uint8_t hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1604 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1605 } 1606 1607 uint8_t hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1608 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1609 } 1610 1611 // TODO: returned ERROR - wrong format 1612 uint8_t hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1613 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1614 if (!hfp_connection) { 1615 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1616 } 1617 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1618 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1619 hfp_hf_run_for_context(hfp_connection); 1620 return ERROR_CODE_SUCCESS; 1621 } 1622 1623 uint8_t hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1624 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1625 if (!hfp_connection) { 1626 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1627 } 1628 1629 switch (hfp_connection->hf_query_operator_state){ 1630 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1631 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1632 break; 1633 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1634 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1635 break; 1636 default: 1637 return ERROR_CODE_COMMAND_DISALLOWED; 1638 } 1639 hfp_hf_run_for_context(hfp_connection); 1640 return ERROR_CODE_SUCCESS; 1641 } 1642 1643 static uint8_t hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1644 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1645 if (!hfp_connection) { 1646 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1647 } 1648 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1649 hfp_hf_run_for_context(hfp_connection); 1650 return ERROR_CODE_SUCCESS; 1651 } 1652 1653 1654 uint8_t hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1655 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1656 } 1657 1658 uint8_t hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1659 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1660 } 1661 1662 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1663 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_hf_supported_features & (1 << HFP_HFSF_ESCO_S4)); 1664 } 1665 1666 uint8_t hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1667 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1668 if (!hfp_connection) { 1669 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1670 } 1671 1672 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1673 return ERROR_CODE_COMMAND_DISALLOWED; 1674 } 1675 1676 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 1677 return ERROR_CODE_COMMAND_DISALLOWED; 1678 } 1679 if (has_codec_negotiation_feature(hfp_connection)) { 1680 switch (hfp_connection->codecs_state) { 1681 case HFP_CODECS_W4_AG_COMMON_CODEC: 1682 break; 1683 case HFP_CODECS_EXCHANGED: 1684 hfp_connection->trigger_codec_exchange = 1; 1685 break; 1686 default: 1687 hfp_connection->codec_confirmed = 0; 1688 hfp_connection->suggested_codec = 0; 1689 hfp_connection->negotiated_codec = 0; 1690 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1691 hfp_connection->trigger_codec_exchange = 1; 1692 break; 1693 } 1694 } else { 1695 log_info("no codec negotiation feature, use CVSD"); 1696 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1697 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1698 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1699 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1700 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1701 hfp_connection->establish_audio_connection = 1; 1702 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1703 } 1704 1705 hfp_hf_run_for_context(hfp_connection); 1706 return ERROR_CODE_SUCCESS; 1707 } 1708 1709 uint8_t hfp_hf_release_audio_connection(hci_con_handle_t acl_handle){ 1710 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1711 if (!hfp_connection) { 1712 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1713 } 1714 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 1715 return ERROR_CODE_COMMAND_DISALLOWED; 1716 } 1717 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 1718 if (status == ERROR_CODE_SUCCESS){ 1719 hfp_hf_run_for_context(hfp_connection); 1720 } 1721 return ERROR_CODE_SUCCESS; 1722 } 1723 1724 uint8_t hfp_hf_answer_incoming_call(hci_con_handle_t acl_handle){ 1725 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1726 if (!hfp_connection) { 1727 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1728 } 1729 1730 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1731 hfp_connection->hf_answer_incoming_call = 1; 1732 hfp_hf_run_for_context(hfp_connection); 1733 } else { 1734 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_hf_callsetup_status); 1735 return ERROR_CODE_COMMAND_DISALLOWED; 1736 } 1737 return ERROR_CODE_SUCCESS; 1738 } 1739 1740 uint8_t hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1741 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1742 if (!hfp_connection) { 1743 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1744 } 1745 hfp_connection->hf_send_chup = 1; 1746 hfp_hf_run_for_context(hfp_connection); 1747 return ERROR_CODE_SUCCESS; 1748 } 1749 1750 uint8_t hfp_hf_reject_incoming_call(hci_con_handle_t acl_handle){ 1751 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1752 if (!hfp_connection) { 1753 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1754 } 1755 1756 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1757 hfp_connection->hf_send_chup = 1; 1758 hfp_hf_run_for_context(hfp_connection); 1759 } 1760 return ERROR_CODE_SUCCESS; 1761 } 1762 1763 uint8_t hfp_hf_user_busy(hci_con_handle_t acl_handle){ 1764 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1765 if (!hfp_connection) { 1766 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1767 } 1768 1769 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1770 hfp_connection->hf_send_chld_0 = 1; 1771 hfp_hf_run_for_context(hfp_connection); 1772 } 1773 return ERROR_CODE_SUCCESS; 1774 } 1775 1776 uint8_t hfp_hf_terminate_held_calls(hci_con_handle_t acl_handle){ 1777 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1778 if (!hfp_connection) { 1779 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1780 } 1781 1782 hfp_connection->hf_send_chld_0 = 1; 1783 hfp_hf_run_for_context(hfp_connection); 1784 1785 return ERROR_CODE_SUCCESS; 1786 } 1787 1788 uint8_t hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1789 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1790 if (!hfp_connection) { 1791 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1792 } 1793 1794 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1795 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1796 hfp_connection->hf_send_chld_1 = 1; 1797 hfp_hf_run_for_context(hfp_connection); 1798 } 1799 return ERROR_CODE_SUCCESS; 1800 } 1801 1802 uint8_t hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1803 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1804 if (!hfp_connection) { 1805 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1806 } 1807 1808 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1809 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1810 hfp_connection->hf_send_chld_2 = 1; 1811 hfp_hf_run_for_context(hfp_connection); 1812 } 1813 return ERROR_CODE_SUCCESS; 1814 } 1815 1816 uint8_t hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1817 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1818 if (!hfp_connection) { 1819 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1820 } 1821 1822 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1823 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1824 hfp_connection->hf_send_chld_3 = 1; 1825 hfp_hf_run_for_context(hfp_connection); 1826 } 1827 return ERROR_CODE_SUCCESS; 1828 } 1829 1830 uint8_t hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1831 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1832 if (!hfp_connection) { 1833 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1834 } 1835 1836 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1837 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1838 hfp_connection->hf_send_chld_4 = 1; 1839 hfp_hf_run_for_context(hfp_connection); 1840 } 1841 return ERROR_CODE_SUCCESS; 1842 } 1843 1844 uint8_t hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1845 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1846 if (!hfp_connection) { 1847 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1848 } 1849 1850 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1851 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1852 hfp_connection->hf_send_chld_x = 1; 1853 hfp_connection->hf_send_chld_x_index = 10 + index; 1854 hfp_hf_run_for_context(hfp_connection); 1855 } 1856 return ERROR_CODE_SUCCESS; 1857 } 1858 1859 uint8_t hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 1860 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1861 if (!hfp_connection) { 1862 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1863 } 1864 1865 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1866 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1867 hfp_connection->hf_send_chld_x = 1; 1868 hfp_connection->hf_send_chld_x_index = 20 + index; 1869 hfp_hf_run_for_context(hfp_connection); 1870 } 1871 return ERROR_CODE_SUCCESS; 1872 } 1873 1874 uint8_t hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 1875 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1876 if (!hfp_connection) { 1877 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1878 } 1879 1880 hfp_connection->hf_initiate_outgoing_call = 1; 1881 snprintf(hfp_hf_phone_number, sizeof(hfp_hf_phone_number), "%s", number); 1882 hfp_hf_run_for_context(hfp_connection); 1883 return ERROR_CODE_SUCCESS; 1884 } 1885 1886 uint8_t hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 1887 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1888 if (!hfp_connection) { 1889 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1890 } 1891 1892 hfp_connection->hf_initiate_memory_dialing = 1; 1893 hfp_connection->memory_id = memory_id; 1894 1895 hfp_hf_run_for_context(hfp_connection); 1896 return ERROR_CODE_SUCCESS; 1897 } 1898 1899 uint8_t hfp_hf_redial_last_number(hci_con_handle_t acl_handle){ 1900 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1901 if (!hfp_connection) { 1902 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1903 } 1904 1905 hfp_connection->hf_initiate_redial_last_number = 1; 1906 hfp_hf_run_for_context(hfp_connection); 1907 return ERROR_CODE_SUCCESS; 1908 } 1909 1910 uint8_t hfp_hf_activate_call_waiting_notification(hci_con_handle_t acl_handle){ 1911 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1912 if (!hfp_connection) { 1913 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1914 } 1915 1916 hfp_connection->hf_activate_call_waiting_notification = 1; 1917 hfp_hf_run_for_context(hfp_connection); 1918 return ERROR_CODE_SUCCESS; 1919 } 1920 1921 1922 uint8_t hfp_hf_deactivate_call_waiting_notification(hci_con_handle_t acl_handle){ 1923 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1924 if (!hfp_connection) { 1925 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1926 } 1927 1928 hfp_connection->hf_deactivate_call_waiting_notification = 1; 1929 hfp_hf_run_for_context(hfp_connection); 1930 return ERROR_CODE_SUCCESS; 1931 } 1932 1933 1934 uint8_t hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1935 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1936 if (!hfp_connection) { 1937 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1938 } 1939 1940 hfp_connection->hf_activate_calling_line_notification = 1; 1941 hfp_hf_run_for_context(hfp_connection); 1942 return ERROR_CODE_SUCCESS; 1943 } 1944 1945 uint8_t hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1946 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1947 if (!hfp_connection) { 1948 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1949 } 1950 1951 hfp_connection->hf_deactivate_calling_line_notification = 1; 1952 hfp_hf_run_for_context(hfp_connection); 1953 return ERROR_CODE_SUCCESS; 1954 } 1955 1956 static bool hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection_t * hfp_connection){ 1957 int ag = get_bit(hfp_connection->remote_supported_features, HFP_AGSF_EC_NR_FUNCTION); 1958 int hf = get_bit(hfp_hf_supported_features, HFP_HFSF_EC_NR_FUNCTION); 1959 return hf && ag; 1960 } 1961 1962 uint8_t hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1963 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1964 if (!hfp_connection) { 1965 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1966 } 1967 if (!hfp_hf_echo_canceling_and_noise_reduction_supported(hfp_connection)){ 1968 return ERROR_CODE_COMMAND_DISALLOWED; 1969 } 1970 1971 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1972 hfp_hf_run_for_context(hfp_connection); 1973 return ERROR_CODE_SUCCESS; 1974 } 1975 1976 uint8_t hfp_hf_activate_voice_recognition(hci_con_handle_t acl_handle){ 1977 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1978 if (!hfp_connection) { 1979 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1980 } 1981 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1982 return ERROR_CODE_COMMAND_DISALLOWED; 1983 } 1984 1985 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1986 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1987 if (!enhanced_vra_supported && !legacy_vra_supported){ 1988 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1989 } 1990 1991 switch (hfp_connection->vra_state){ 1992 case HFP_VRA_VOICE_RECOGNITION_OFF: 1993 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 1994 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 1995 hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 1996 break; 1997 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 1998 hfp_connection->activate_voice_recognition = true; 1999 break; 2000 default: 2001 return ERROR_CODE_COMMAND_DISALLOWED; 2002 } 2003 2004 hfp_hf_run_for_context(hfp_connection); 2005 return ERROR_CODE_SUCCESS; 2006 } 2007 2008 uint8_t hfp_hf_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 2009 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2010 if (!hfp_connection) { 2011 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2012 } 2013 2014 if (hfp_connection->emit_vra_enabled_after_audio_established){ 2015 return ERROR_CODE_COMMAND_DISALLOWED; 2016 } 2017 2018 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 2019 return ERROR_CODE_COMMAND_DISALLOWED; 2020 } 2021 2022 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 2023 if (!enhanced_vra_supported){ 2024 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2025 } 2026 2027 switch (hfp_connection->vra_state){ 2028 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 2029 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2030 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 2031 break; 2032 default: 2033 return ERROR_CODE_COMMAND_DISALLOWED; 2034 } 2035 2036 hfp_hf_run_for_context(hfp_connection); 2037 return ERROR_CODE_SUCCESS; 2038 } 2039 2040 2041 uint8_t hfp_hf_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2042 // return deactivate_voice_recognition(acl_handle, false); 2043 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2044 if (!hfp_connection) { 2045 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2046 } 2047 2048 if (hfp_connection->emit_vra_enabled_after_audio_established){ 2049 return ERROR_CODE_COMMAND_DISALLOWED; 2050 } 2051 2052 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 2053 hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 2054 return ERROR_CODE_COMMAND_DISALLOWED; 2055 } 2056 2057 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 2058 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 2059 if (!enhanced_vra_supported && !legacy_vra_supported){ 2060 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2061 } 2062 2063 switch (hfp_connection->vra_state){ 2064 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 2065 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 2066 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2067 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2068 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2069 break; 2070 2071 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 2072 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2073 hfp_connection->deactivate_voice_recognition = true; 2074 break; 2075 2076 case HFP_VRA_VOICE_RECOGNITION_OFF: 2077 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 2078 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 2079 default: 2080 return ERROR_CODE_COMMAND_DISALLOWED; 2081 } 2082 2083 hfp_hf_run_for_context(hfp_connection); 2084 return ERROR_CODE_SUCCESS; 2085 } 2086 2087 uint8_t hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2088 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2089 if (!hfp_connection) { 2090 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2091 } 2092 2093 if (hfp_connection->microphone_gain == gain) { 2094 return ERROR_CODE_SUCCESS; 2095 } 2096 2097 if ((gain < 0) || (gain > 15)){ 2098 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2099 return ERROR_CODE_COMMAND_DISALLOWED; 2100 } 2101 2102 hfp_connection->microphone_gain = gain; 2103 hfp_connection->send_microphone_gain = 1; 2104 hfp_hf_run_for_context(hfp_connection); 2105 return ERROR_CODE_SUCCESS; 2106 } 2107 2108 uint8_t hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2109 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2110 if (!hfp_connection) { 2111 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2112 } 2113 2114 if (hfp_connection->speaker_gain == gain){ 2115 return ERROR_CODE_SUCCESS; 2116 } 2117 2118 if ((gain < 0) || (gain > 15)){ 2119 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2120 return ERROR_CODE_COMMAND_DISALLOWED; 2121 } 2122 2123 hfp_connection->speaker_gain = gain; 2124 hfp_connection->send_speaker_gain = 1; 2125 hfp_hf_run_for_context(hfp_connection); 2126 return ERROR_CODE_SUCCESS; 2127 } 2128 2129 uint8_t hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 2130 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2131 if (!hfp_connection) { 2132 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2133 } 2134 hfp_connection->hf_send_dtmf_code = code; 2135 hfp_hf_run_for_context(hfp_connection); 2136 return ERROR_CODE_SUCCESS; 2137 } 2138 2139 uint8_t hfp_hf_request_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2140 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2141 if (!hfp_connection) { 2142 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2143 } 2144 hfp_connection->hf_send_binp = 1; 2145 hfp_hf_run_for_context(hfp_connection); 2146 return ERROR_CODE_SUCCESS; 2147 } 2148 2149 uint8_t hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 2150 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2151 if (!hfp_connection) { 2152 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2153 } 2154 hfp_connection->hf_send_clcc = 1; 2155 hfp_hf_run_for_context(hfp_connection); 2156 return ERROR_CODE_SUCCESS; 2157 } 2158 2159 2160 uint8_t hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 2161 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2162 if (!hfp_connection) { 2163 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2164 } 2165 hfp_connection->hf_send_rrh = 1; 2166 hfp_connection->hf_send_rrh_command = '?'; 2167 hfp_hf_run_for_context(hfp_connection); 2168 return ERROR_CODE_SUCCESS; 2169 } 2170 2171 uint8_t hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 2172 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2173 if (!hfp_connection) { 2174 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2175 } 2176 hfp_connection->hf_send_rrh = 1; 2177 hfp_connection->hf_send_rrh_command = '0'; 2178 hfp_hf_run_for_context(hfp_connection); 2179 return ERROR_CODE_SUCCESS; 2180 } 2181 2182 uint8_t hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 2183 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2184 if (!hfp_connection) { 2185 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2186 } 2187 hfp_connection->hf_send_rrh = 1; 2188 hfp_connection->hf_send_rrh_command = '1'; 2189 hfp_hf_run_for_context(hfp_connection); 2190 return ERROR_CODE_SUCCESS; 2191 } 2192 2193 uint8_t hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 2194 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2195 if (!hfp_connection) { 2196 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2197 } 2198 hfp_connection->hf_send_rrh = 1; 2199 hfp_connection->hf_send_rrh_command = '2'; 2200 hfp_hf_run_for_context(hfp_connection); 2201 return ERROR_CODE_SUCCESS; 2202 } 2203 2204 uint8_t hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 2205 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2206 if (!hfp_connection) { 2207 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2208 } 2209 hfp_connection->hf_send_cnum = 1; 2210 hfp_hf_run_for_context(hfp_connection); 2211 return ERROR_CODE_SUCCESS; 2212 } 2213 2214 uint8_t hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 2215 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2216 if (!hfp_connection) { 2217 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2218 } 2219 // find index for assigned number 2220 int i; 2221 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 2222 if (hfp_hf_indicators[i] == assigned_number){ 2223 // set value 2224 hfp_hf_indicators_value[i] = value; 2225 // mark for update 2226 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 2227 hfp_connection->generic_status_update_bitmap |= (1<<i); 2228 // send update 2229 hfp_hf_run_for_context(hfp_connection); 2230 } 2231 return ERROR_CODE_SUCCESS; 2232 } 2233 } 2234 return ERROR_CODE_SUCCESS; 2235 } 2236 2237 uint8_t hfp_hf_send_at_command(hci_con_handle_t acl_handle, const char * at_command){ 2238 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2239 if (!hfp_connection) { 2240 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2241 } 2242 if (hfp_connection->send_custom_message != NULL){ 2243 return ERROR_CODE_COMMAND_DISALLOWED; 2244 } 2245 hfp_connection->send_custom_message = at_command; 2246 hfp_hf_run_for_context(hfp_connection); 2247 return ERROR_CODE_SUCCESS; 2248 } 2249 2250 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 2251 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2252 if (!hfp_connection) { 2253 return 0; 2254 } 2255 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 2256 } 2257 2258 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){ 2259 if (!name){ 2260 name = hfp_hf_default_service_name; 2261 } 2262 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 2263 2264 // Construct SupportedFeatures for SDP bitmap: 2265 // 2266 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2267 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2268 // 2269 // Wide band speech (bit 5) requires Codec negotiation 2270 // 2271 uint16_t sdp_features = supported_features & 0x1f; 2272 if ( (wide_band_speech != 0) && (supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION))){ 2273 sdp_features |= 1 << 5; 2274 } 2275 2276 if (supported_features & (1 << HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2277 sdp_features |= 1 << 6; 2278 } 2279 2280 if (supported_features & (1 << HFP_HFSF_VOICE_RECOGNITION_TEXT)){ 2281 sdp_features |= 1 << 7; 2282 } 2283 2284 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311); // Hands-Free Profile - SupportedFeatures 2285 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2286 } 2287 2288 void hfp_hf_register_custom_at_command(hfp_custom_at_command_t * custom_at_command){ 2289 hfp_register_custom_hf_command(custom_at_command); 2290 } 2291 2292 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 2293 btstack_assert(callback != NULL); 2294 2295 hfp_hf_callback = callback; 2296 hfp_set_hf_callback(callback); 2297 } 2298