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 #ifdef ENABLE_NXP_PCM_WBS 823 if (hfp_connection->nxp_start_audio_handle != HCI_CON_HANDLE_INVALID){ 824 hci_con_handle_t sco_handle = hfp_connection->nxp_start_audio_handle; 825 hfp_connection->nxp_start_audio_handle = HCI_CON_HANDLE_INVALID; 826 hci_send_cmd(&hci_nxp_host_pcm_i2s_audio_config, 0, 0, sco_handle, 0); 827 return; 828 } 829 if (hfp_connection->nxp_stop_audio_handle != HCI_CON_HANDLE_INVALID){ 830 hci_con_handle_t sco_handle = hfp_connection->nxp_stop_audio_handle; 831 hfp_connection->nxp_stop_audio_handle = HCI_CON_HANDLE_INVALID; 832 hci_send_cmd(&hci_nxp_host_pcm_i2s_audio_config, 1, 0, sco_handle, 0); 833 return; 834 } 835 #endif 836 #if defined (ENABLE_CC256X_ASSISTED_HFP) || defined (ENABLE_BCM_PCM_WBS) 837 if (hfp_connection->state == HFP_W4_WBS_SHUTDOWN){ 838 hfp_finalize_connection_context(hfp_connection); 839 return; 840 } 841 #endif 842 843 if (hfp_connection->accept_sco && (hfp_sco_setup_active() == false)){ 844 bool incoming_eSCO = hfp_connection->accept_sco == 2; 845 // notify about codec selection if not done already 846 if (hfp_connection->negotiated_codec == 0){ 847 hfp_connection->negotiated_codec = HFP_CODEC_CVSD; 848 } 849 hfp_accept_synchronous_connection(hfp_connection, incoming_eSCO); 850 return; 851 } 852 853 if (!rfcomm_can_send_packet_now(hfp_connection->rfcomm_cid)) { 854 rfcomm_request_can_send_now_event(hfp_connection->rfcomm_cid); 855 return; 856 } 857 int done = hfp_hf_run_for_context_service_level_connection(hfp_connection); 858 if (!done){ 859 done = hfp_hf_run_for_context_service_level_connection_queries(hfp_connection); 860 } 861 if (!done){ 862 done = hfp_hf_run_for_audio_connection(hfp_connection); 863 } 864 if (!done){ 865 done = hfp_hf_voice_recognition_state_machine(hfp_connection); 866 } 867 if (!done){ 868 done = call_setup_state_machine(hfp_connection); 869 } 870 871 // don't send a new command while ok still pending or SLC is not established 872 if (hfp_connection->ok_pending || (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED)){ 873 return; 874 } 875 876 if (hfp_connection->send_microphone_gain){ 877 hfp_connection->send_microphone_gain = 0; 878 hfp_connection->ok_pending = 1; 879 hfp_hf_set_microphone_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->microphone_gain); 880 return; 881 } 882 883 if (hfp_connection->send_speaker_gain){ 884 hfp_connection->send_speaker_gain = 0; 885 hfp_connection->ok_pending = 1; 886 hfp_hf_set_speaker_gain_cmd(hfp_connection->rfcomm_cid, hfp_connection->speaker_gain); 887 return; 888 } 889 890 if (hfp_connection->hf_deactivate_calling_line_notification){ 891 hfp_connection->hf_deactivate_calling_line_notification = 0; 892 hfp_connection->ok_pending = 1; 893 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 0); 894 return; 895 } 896 897 if (hfp_connection->hf_activate_calling_line_notification){ 898 hfp_connection->hf_activate_calling_line_notification = 0; 899 hfp_connection->ok_pending = 1; 900 hfp_hf_set_calling_line_notification_cmd(hfp_connection->rfcomm_cid, 1); 901 return; 902 } 903 904 if (hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction){ 905 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 0; 906 hfp_connection->response_pending_for_command = HFP_CMD_TURN_OFF_EC_AND_NR; 907 hfp_connection->ok_pending = 1; 908 hfp_hf_send_cmd_with_int(hfp_connection->rfcomm_cid, HFP_TURN_OFF_EC_AND_NR, 0); 909 return; 910 } 911 912 if (hfp_connection->hf_deactivate_call_waiting_notification){ 913 hfp_connection->hf_deactivate_call_waiting_notification = 0; 914 hfp_connection->ok_pending = 1; 915 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 0); 916 return; 917 } 918 919 if (hfp_connection->hf_activate_call_waiting_notification){ 920 hfp_connection->hf_activate_call_waiting_notification = 0; 921 hfp_connection->ok_pending = 1; 922 hfp_hf_set_call_waiting_notification_cmd(hfp_connection->rfcomm_cid, 1); 923 return; 924 } 925 926 if (hfp_connection->hf_initiate_outgoing_call){ 927 hfp_connection->hf_initiate_outgoing_call = 0; 928 hfp_connection->ok_pending = 1; 929 hfp_hf_initiate_outgoing_call_cmd(hfp_connection->rfcomm_cid); 930 return; 931 } 932 933 if (hfp_connection->hf_initiate_memory_dialing){ 934 hfp_connection->hf_initiate_memory_dialing = 0; 935 hfp_connection->ok_pending = 1; 936 hfp_hf_send_memory_dial_cmd(hfp_connection->rfcomm_cid, hfp_connection->memory_id); 937 return; 938 } 939 940 if (hfp_connection->hf_initiate_redial_last_number){ 941 hfp_connection->hf_initiate_redial_last_number = 0; 942 hfp_connection->ok_pending = 1; 943 hfp_hf_send_redial_last_number_cmd(hfp_connection->rfcomm_cid); 944 return; 945 } 946 947 if (hfp_connection->hf_send_chup){ 948 hfp_connection->hf_send_chup = 0; 949 hfp_connection->ok_pending = 1; 950 hfp_hf_send_chup(hfp_connection->rfcomm_cid); 951 return; 952 } 953 954 if (hfp_connection->hf_send_chld_0){ 955 hfp_connection->hf_send_chld_0 = 0; 956 hfp_connection->ok_pending = 1; 957 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 0); 958 return; 959 } 960 961 if (hfp_connection->hf_send_chld_1){ 962 hfp_connection->hf_send_chld_1 = 0; 963 hfp_connection->ok_pending = 1; 964 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 1); 965 return; 966 } 967 968 if (hfp_connection->hf_send_chld_2){ 969 hfp_connection->hf_send_chld_2 = 0; 970 hfp_connection->ok_pending = 1; 971 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 2); 972 return; 973 } 974 975 if (hfp_connection->hf_send_chld_3){ 976 hfp_connection->hf_send_chld_3 = 0; 977 hfp_connection->ok_pending = 1; 978 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 3); 979 return; 980 } 981 982 if (hfp_connection->hf_send_chld_4){ 983 hfp_connection->hf_send_chld_4 = 0; 984 hfp_connection->ok_pending = 1; 985 hfp_hf_send_chld(hfp_connection->rfcomm_cid, 4); 986 return; 987 } 988 989 if (hfp_connection->hf_send_chld_x){ 990 hfp_connection->hf_send_chld_x = 0; 991 hfp_connection->ok_pending = 1; 992 hfp_hf_send_chld(hfp_connection->rfcomm_cid, hfp_connection->hf_send_chld_x_index); 993 return; 994 } 995 996 if (hfp_connection->hf_send_dtmf_code){ 997 char code = hfp_connection->hf_send_dtmf_code; 998 hfp_connection->hf_send_dtmf_code = 0; 999 hfp_connection->ok_pending = 1; 1000 hfp_hf_send_dtmf(hfp_connection->rfcomm_cid, code); 1001 // notify client that dtmf was sent 1002 char buffer[2]; 1003 buffer[0] = code; 1004 buffer[1] = 0; 1005 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_TRANSMIT_DTMF_CODES, buffer); 1006 return; 1007 } 1008 1009 if (hfp_connection->hf_send_binp){ 1010 hfp_connection->hf_send_binp = 0; 1011 hfp_connection->ok_pending = 1; 1012 hfp_hf_send_binp(hfp_connection->rfcomm_cid); 1013 return; 1014 } 1015 1016 if (hfp_connection->hf_send_clcc){ 1017 hfp_connection->hf_send_clcc = 0; 1018 hfp_connection->ok_pending = 1; 1019 hfp_hf_send_clcc(hfp_connection->rfcomm_cid); 1020 return; 1021 } 1022 1023 if (hfp_connection->hf_send_rrh){ 1024 hfp_connection->hf_send_rrh = 0; 1025 char buffer[20]; 1026 switch (hfp_connection->hf_send_rrh_command){ 1027 case '?': 1028 snprintf(buffer, sizeof(buffer), "AT%s?\r", 1029 HFP_RESPONSE_AND_HOLD); 1030 buffer[sizeof(buffer) - 1] = 0; 1031 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1032 return; 1033 case '0': 1034 case '1': 1035 case '2': 1036 snprintf(buffer, sizeof(buffer), "AT%s=%c\r", 1037 HFP_RESPONSE_AND_HOLD, 1038 hfp_connection->hf_send_rrh_command); 1039 buffer[sizeof(buffer) - 1] = 0; 1040 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1041 return; 1042 default: 1043 break; 1044 } 1045 return; 1046 } 1047 1048 if (hfp_connection->hf_send_cnum){ 1049 hfp_connection->hf_send_cnum = 0; 1050 char buffer[20]; 1051 snprintf(buffer, sizeof(buffer), "AT%s\r", 1052 HFP_SUBSCRIBER_NUMBER_INFORMATION); 1053 buffer[sizeof(buffer) - 1] = 0; 1054 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1055 return; 1056 } 1057 1058 // update HF indicators 1059 if (hfp_connection->generic_status_update_bitmap){ 1060 int i; 1061 for (i=0; i < hfp_hf_indicators_nr; i++){ 1062 if (get_bit(hfp_connection->generic_status_update_bitmap, i)){ 1063 if (hfp_connection->generic_status_indicators[i].state){ 1064 hfp_connection->ok_pending = 1; 1065 hfp_connection->generic_status_update_bitmap = store_bit(hfp_connection->generic_status_update_bitmap, i, 0); 1066 char buffer[30]; 1067 snprintf(buffer, sizeof(buffer), "AT%s=%u,%u\r", 1068 HFP_TRANSFER_HF_INDICATOR_STATUS, 1069 hfp_hf_indicators[i], 1070 (unsigned int)hfp_hf_indicators_value[i]); 1071 buffer[sizeof(buffer) - 1] = 0; 1072 send_str_over_rfcomm(hfp_connection->rfcomm_cid, buffer); 1073 } else { 1074 log_info("Not sending HF indicator %u as it is disabled", hfp_hf_indicators[i]); 1075 } 1076 return; 1077 } 1078 } 1079 } 1080 1081 if (hfp_connection->send_custom_message != NULL){ 1082 const char * message = hfp_connection->send_custom_message; 1083 hfp_connection->send_custom_message = NULL; 1084 hfp_connection->ok_pending = 1; 1085 hfp_connection->response_pending_for_command = HFP_CMD_CUSTOM_MESSAGE; 1086 send_str_over_rfcomm(hfp_connection->rfcomm_cid, message); 1087 return; 1088 } 1089 1090 if (done) return; 1091 // deal with disconnect 1092 switch (hfp_connection->state){ 1093 case HFP_W2_DISCONNECT_RFCOMM: 1094 hfp_connection->state = HFP_W4_RFCOMM_DISCONNECTED; 1095 rfcomm_disconnect(hfp_connection->rfcomm_cid); 1096 break; 1097 1098 default: 1099 break; 1100 } 1101 } 1102 1103 static void hfp_hf_slc_established(hfp_connection_t * hfp_connection){ 1104 hfp_connection->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED; 1105 1106 hfp_emit_slc_connection_event(hfp_connection->local_role, 0, hfp_connection->acl_handle, hfp_connection->remote_addr); 1107 1108 uint8_t i; 1109 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1110 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1111 } 1112 1113 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1114 hfp_connection->ag_indicators[i].status_changed = 0; 1115 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1116 } 1117 1118 // restore volume settings 1119 hfp_connection->speaker_gain = hfp_hf_speaker_gain; 1120 hfp_connection->send_speaker_gain = 1; 1121 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, hfp_hf_speaker_gain); 1122 hfp_connection->microphone_gain = hfp_hf_microphone_gain; 1123 hfp_connection->send_microphone_gain = 1; 1124 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, hfp_hf_microphone_gain); 1125 } 1126 1127 static void hfp_hf_handle_suggested_codec(hfp_connection_t * hfp_connection){ 1128 if (hfp_supports_codec(hfp_connection->suggested_codec, hfp_hf_codecs_nr, hfp_hf_codecs)){ 1129 // Codec supported, confirm 1130 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1131 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1132 log_info("hfp: codec confirmed: %s", (hfp_connection->negotiated_codec == HFP_CODEC_MSBC) ? "mSBC" : "CVSD"); 1133 hfp_connection->codecs_state = HFP_CODECS_HF_CONFIRMED_CODEC; 1134 1135 hfp_connection->hf_send_codec_confirm = true; 1136 } else { 1137 // Codec not supported, send supported codecs 1138 hfp_connection->codec_confirmed = 0; 1139 hfp_connection->suggested_codec = 0; 1140 hfp_connection->negotiated_codec = 0; 1141 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1142 1143 hfp_connection->hf_send_supported_codecs = true; 1144 } 1145 } 1146 1147 static bool hfp_hf_switch_on_ok_pending(hfp_connection_t *hfp_connection, uint8_t status){ 1148 bool event_emited = true; 1149 1150 // cache state and reset 1151 hfp_command_t response_pending_for_command = hfp_connection->response_pending_for_command; 1152 hfp_connection->response_pending_for_command = HFP_CMD_NONE; 1153 hfp_connection->command = HFP_CMD_NONE; 1154 hfp_connection->ok_pending = 0; 1155 1156 switch (response_pending_for_command){ 1157 case HFP_CMD_TURN_OFF_EC_AND_NR: 1158 hfp_emit_event(hfp_connection, HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE, status); 1159 break; 1160 case HFP_CMD_CUSTOM_MESSAGE: 1161 hfp_emit_event(hfp_connection, HFP_SUBEVENT_CUSTOM_AT_MESSAGE_SENT, status); 1162 break; 1163 default: 1164 event_emited = false; 1165 1166 switch (hfp_connection->state){ 1167 case HFP_W4_EXCHANGE_SUPPORTED_FEATURES: 1168 if (has_codec_negotiation_feature(hfp_connection)){ 1169 hfp_connection->state = HFP_NOTIFY_ON_CODECS; 1170 break; 1171 } 1172 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1173 break; 1174 1175 case HFP_W4_NOTIFY_ON_CODECS: 1176 hfp_connection->state = HFP_RETRIEVE_INDICATORS; 1177 break; 1178 1179 case HFP_W4_RETRIEVE_INDICATORS: 1180 hfp_connection->state = HFP_RETRIEVE_INDICATORS_STATUS; 1181 break; 1182 1183 case HFP_W4_RETRIEVE_INDICATORS_STATUS: 1184 hfp_connection->state = HFP_ENABLE_INDICATORS_STATUS_UPDATE; 1185 break; 1186 1187 case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE: 1188 if (has_call_waiting_and_3way_calling_feature(hfp_connection)){ 1189 hfp_connection->state = HFP_RETRIEVE_CAN_HOLD_CALL; 1190 break; 1191 } 1192 if (has_hf_indicators_feature(hfp_connection)){ 1193 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1194 break; 1195 } 1196 hfp_hf_slc_established(hfp_connection); 1197 break; 1198 1199 case HFP_W4_RETRIEVE_CAN_HOLD_CALL: 1200 if (has_hf_indicators_feature(hfp_connection)){ 1201 hfp_connection->state = HFP_LIST_GENERIC_STATUS_INDICATORS; 1202 break; 1203 } 1204 hfp_hf_slc_established(hfp_connection); 1205 break; 1206 1207 case HFP_W4_LIST_GENERIC_STATUS_INDICATORS: 1208 hfp_connection->state = HFP_RETRIEVE_GENERIC_STATUS_INDICATORS; 1209 break; 1210 1211 case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS: 1212 hfp_connection->state = HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS; 1213 break; 1214 1215 case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS: 1216 hfp_hf_slc_established(hfp_connection); 1217 break; 1218 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1219 if (hfp_connection->enable_status_update_for_ag_indicators != 0xFF){ 1220 hfp_connection->enable_status_update_for_ag_indicators = 0xFF; 1221 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_SUCCESS); 1222 break; 1223 } 1224 1225 if (hfp_connection->change_status_update_for_individual_ag_indicators == 1){ 1226 hfp_connection->change_status_update_for_individual_ag_indicators = 0; 1227 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_SUCCESS); 1228 break; 1229 } 1230 1231 switch (hfp_connection->hf_query_operator_state){ 1232 case HFP_HF_QUERY_OPERATOR_W4_SET_FORMAT_OK: 1233 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1234 break; 1235 case HPF_HF_QUERY_OPERATOR_W4_RESULT: 1236 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_FORMAT_SET; 1237 hfp_emit_network_operator_event(hfp_connection); 1238 break; 1239 default: 1240 break; 1241 } 1242 1243 if (hfp_connection->enable_extended_audio_gateway_error_report){ 1244 hfp_connection->enable_extended_audio_gateway_error_report = 0; 1245 break; 1246 } 1247 1248 switch (hfp_connection->codecs_state){ 1249 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1250 hfp_connection->codecs_state = HFP_CODECS_W4_AG_COMMON_CODEC; 1251 break; 1252 case HFP_CODECS_HF_CONFIRMED_CODEC: 1253 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1254 break; 1255 default: 1256 break; 1257 } 1258 hfp_hf_voice_recognition_state_machine(hfp_connection); 1259 break; 1260 case HFP_AUDIO_CONNECTION_ESTABLISHED: 1261 hfp_hf_voice_recognition_state_machine(hfp_connection); 1262 break; 1263 default: 1264 break; 1265 } 1266 break; 1267 } 1268 1269 return event_emited; 1270 } 1271 1272 static bool hfp_is_ringing(hfp_callsetup_status_t callsetup_status){ 1273 switch (callsetup_status){ 1274 case HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS: 1275 case HFP_CALLSETUP_STATUS_OUTGOING_CALL_SETUP_IN_ALERTING_STATE: 1276 return true; 1277 default: 1278 return false; 1279 } 1280 } 1281 1282 static void hfp_hf_handle_transfer_ag_indicator_status(hfp_connection_t * hfp_connection) { 1283 uint16_t i; 1284 1285 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1286 if (hfp_connection->ag_indicators[i].status_changed) { 1287 if (strcmp(hfp_connection->ag_indicators[i].name, "callsetup") == 0){ 1288 hfp_callsetup_status_t new_hf_callsetup_status = (hfp_callsetup_status_t) hfp_connection->ag_indicators[i].status; 1289 bool ringing_old = hfp_is_ringing(hfp_hf_callsetup_status); 1290 bool ringing_new = hfp_is_ringing(new_hf_callsetup_status); 1291 if (ringing_old != ringing_new){ 1292 if (ringing_new){ 1293 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_START_RINGING); 1294 } else { 1295 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_STOP_RINGING); 1296 } 1297 } 1298 hfp_hf_callsetup_status = new_hf_callsetup_status; 1299 } else if (strcmp(hfp_connection->ag_indicators[i].name, "callheld") == 0){ 1300 hfp_hf_callheld_status = (hfp_callheld_status_t) hfp_connection->ag_indicators[i].status; 1301 // avoid set but not used warning 1302 (void) hfp_hf_callheld_status; 1303 } else if (strcmp(hfp_connection->ag_indicators[i].name, "call") == 0){ 1304 hfp_call_status_t new_hf_call_status = (hfp_call_status_t) hfp_connection->ag_indicators[i].status; 1305 if (hfp_hf_call_status != new_hf_call_status){ 1306 if (new_hf_call_status == HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS){ 1307 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_TERMINATED); 1308 } else { 1309 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_CALL_ANSWERED); 1310 } 1311 } 1312 hfp_hf_call_status = new_hf_call_status; 1313 } 1314 hfp_connection->ag_indicators[i].status_changed = 0; 1315 hfp_emit_ag_indicator_status_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1316 break; 1317 } 1318 } 1319 } 1320 1321 static void hfp_hf_handle_rfcomm_command(hfp_connection_t * hfp_connection){ 1322 int value; 1323 int i; 1324 bool event_emited; 1325 1326 // last argument is still in line_buffer 1327 1328 switch (hfp_connection->command){ 1329 case HFP_CMD_GET_SUBSCRIBER_NUMBER_INFORMATION: 1330 hfp_connection->command = HFP_CMD_NONE; 1331 hfp_hf_emit_subscriber_information(hfp_connection, 0); 1332 break; 1333 case HFP_CMD_RESPONSE_AND_HOLD_STATUS: 1334 hfp_connection->command = HFP_CMD_NONE; 1335 hfp_emit_event(hfp_connection, HFP_SUBEVENT_RESPONSE_AND_HOLD_STATUS, btstack_atoi((char *)&hfp_connection->line_buffer[0])); 1336 break; 1337 case HFP_CMD_LIST_CURRENT_CALLS: 1338 hfp_connection->command = HFP_CMD_NONE; 1339 hfp_hf_emit_enhanced_call_status(hfp_connection); 1340 break; 1341 case HFP_CMD_SET_SPEAKER_GAIN: 1342 hfp_connection->command = HFP_CMD_NONE; 1343 value = btstack_atoi((char*)hfp_connection->line_buffer); 1344 hfp_hf_speaker_gain = value; 1345 hfp_emit_event(hfp_connection, HFP_SUBEVENT_SPEAKER_VOLUME, value); 1346 break; 1347 case HFP_CMD_SET_MICROPHONE_GAIN: 1348 hfp_connection->command = HFP_CMD_NONE; 1349 value = btstack_atoi((char*)hfp_connection->line_buffer); 1350 hfp_hf_microphone_gain = value; 1351 hfp_emit_event(hfp_connection, HFP_SUBEVENT_MICROPHONE_VOLUME, value); 1352 break; 1353 case HFP_CMD_AG_SENT_PHONE_NUMBER: 1354 hfp_connection->command = HFP_CMD_NONE; 1355 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG, hfp_connection->bnip_number); 1356 break; 1357 case HFP_CMD_AG_SENT_CALL_WAITING_NOTIFICATION_UPDATE: 1358 hfp_connection->command = HFP_CMD_NONE; 1359 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALL_WAITING_NOTIFICATION); 1360 break; 1361 case HFP_CMD_AG_SENT_CLIP_INFORMATION: 1362 hfp_connection->command = HFP_CMD_NONE; 1363 hfp_hf_emit_type_number_alpha(hfp_connection, HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION); 1364 break; 1365 case HFP_CMD_EXTENDED_AUDIO_GATEWAY_ERROR: 1366 hfp_connection->command = HFP_CMD_NONE; 1367 hfp_connection->ok_pending = 0; 1368 hfp_connection->extended_audio_gateway_error = 0; 1369 hfp_emit_event(hfp_connection, HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR, hfp_connection->extended_audio_gateway_error_value); 1370 break; 1371 case HFP_CMD_AG_ACTIVATE_VOICE_RECOGNITION: 1372 break; 1373 case HFP_CMD_ERROR: 1374 switch (hfp_connection->state){ 1375 case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED: 1376 switch (hfp_connection->codecs_state){ 1377 case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE: 1378 hfp_reset_context_flags(hfp_connection); 1379 hfp_emit_sco_connection_established(hfp_connection, HFP_REMOTE_REJECTS_AUDIO_CONNECTION, 1380 hfp_connection->negotiated_codec, 0, 0); 1381 return; 1382 default: 1383 break; 1384 } 1385 break; 1386 default: 1387 break; 1388 } 1389 1390 // handle error response for voice activation (HF initiated) 1391 switch(hfp_connection->vra_state_requested){ 1392 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 1393 hfp_emit_enhanced_voice_recognition_hf_ready_for_audio_event(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1394 break; 1395 default: 1396 if (hfp_connection->vra_state_requested == hfp_connection->vra_state){ 1397 break; 1398 } 1399 hfp_connection->vra_state_requested = hfp_connection->vra_state; 1400 hfp_emit_voice_recognition_enabled(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1401 hfp_reset_context_flags(hfp_connection); 1402 return; 1403 } 1404 event_emited = hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_UNSPECIFIED_ERROR); 1405 if (!event_emited){ 1406 hfp_emit_event(hfp_connection, HFP_SUBEVENT_COMPLETE, ERROR_CODE_UNSPECIFIED_ERROR); 1407 } 1408 hfp_reset_context_flags(hfp_connection); 1409 break; 1410 1411 case HFP_CMD_OK: 1412 hfp_hf_switch_on_ok_pending(hfp_connection, ERROR_CODE_SUCCESS); 1413 break; 1414 case HFP_CMD_RING: 1415 hfp_connection->command = HFP_CMD_NONE; 1416 hfp_emit_simple_event(hfp_connection, HFP_SUBEVENT_RING); 1417 break; 1418 case HFP_CMD_TRANSFER_AG_INDICATOR_STATUS: 1419 hfp_connection->command = HFP_CMD_NONE; 1420 hfp_hf_handle_transfer_ag_indicator_status(hfp_connection); 1421 break; 1422 case HFP_CMD_RETRIEVE_AG_INDICATORS_STATUS: 1423 hfp_connection->command = HFP_CMD_NONE; 1424 // report status after SLC established 1425 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){ 1426 break; 1427 } 1428 for (i = 0; i < hfp_connection->ag_indicators_nr; i++){ 1429 hfp_emit_ag_indicator_mapping_event(hfp_connection, &hfp_connection->ag_indicators[i]); 1430 } 1431 break; 1432 case HFP_CMD_AG_SUGGESTED_CODEC: 1433 hfp_connection->command = HFP_CMD_NONE; 1434 hfp_hf_handle_suggested_codec(hfp_connection); 1435 break; 1436 case HFP_CMD_CHANGE_IN_BAND_RING_TONE_SETTING: 1437 hfp_emit_event(hfp_connection, HFP_SUBEVENT_IN_BAND_RING_TONE, get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE)); 1438 break; 1439 case HFP_CMD_CUSTOM_MESSAGE: 1440 hfp_connection->command = HFP_CMD_NONE; 1441 hfp_parser_reset_line_buffer(hfp_connection); 1442 log_info("Custom AT Command ID 0x%04x", hfp_connection->custom_at_command_id); 1443 hfp_hf_emit_custom_command_event(hfp_connection); 1444 break; 1445 default: 1446 break; 1447 } 1448 } 1449 1450 static int hfp_parser_is_end_of_line(uint8_t byte){ 1451 return (byte == '\n') || (byte == '\r'); 1452 } 1453 1454 static void hfp_hf_handle_rfcomm_data(hfp_connection_t * hfp_connection, uint8_t *packet, uint16_t size){ 1455 // assertion: size >= 1 as rfcomm.c does not deliver empty packets 1456 if (size < 1) return; 1457 1458 hfp_log_rfcomm_message("HFP_HF_RX", packet, size); 1459 #ifdef ENABLE_HFP_AT_MESSAGES 1460 hfp_emit_string_event(hfp_connection, HFP_SUBEVENT_AT_MESSAGE_RECEIVED, (char *) packet); 1461 #endif 1462 1463 // process messages byte-wise 1464 uint8_t pos; 1465 for (pos = 0; pos < size; pos++){ 1466 hfp_parse(hfp_connection, packet[pos], 1); 1467 // parse until end of line "\r" or "\n" 1468 if (!hfp_parser_is_end_of_line(packet[pos])) continue; 1469 hfp_hf_handle_rfcomm_command(hfp_connection); 1470 } 1471 } 1472 1473 static void hfp_hf_run(void){ 1474 btstack_linked_list_iterator_t it; 1475 btstack_linked_list_iterator_init(&it, hfp_get_connections()); 1476 while (btstack_linked_list_iterator_has_next(&it)){ 1477 hfp_connection_t * hfp_connection = (hfp_connection_t *)btstack_linked_list_iterator_next(&it); 1478 if (hfp_connection->local_role != HFP_ROLE_HF) continue; 1479 hfp_hf_run_for_context(hfp_connection); 1480 } 1481 } 1482 1483 static void hfp_hf_rfcomm_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1484 hfp_connection_t * hfp_connection; 1485 switch (packet_type){ 1486 case RFCOMM_DATA_PACKET: 1487 hfp_connection = get_hfp_connection_context_for_rfcomm_cid(channel); 1488 if (!hfp_connection) return; 1489 hfp_hf_handle_rfcomm_data(hfp_connection, packet, size); 1490 hfp_hf_run_for_context(hfp_connection); 1491 return; 1492 case HCI_EVENT_PACKET: 1493 if (packet[0] == RFCOMM_EVENT_CAN_SEND_NOW){ 1494 uint16_t rfcomm_cid = rfcomm_event_can_send_now_get_rfcomm_cid(packet); 1495 hfp_hf_run_for_context(get_hfp_connection_context_for_rfcomm_cid(rfcomm_cid)); 1496 return; 1497 } 1498 hfp_handle_rfcomm_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1499 break; 1500 default: 1501 break; 1502 } 1503 hfp_hf_run(); 1504 } 1505 1506 static void hfp_hf_hci_event_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 1507 hfp_handle_hci_event(packet_type, channel, packet, size, HFP_ROLE_HF); 1508 hfp_hf_run(); 1509 } 1510 1511 static void hfp_hf_set_defaults(void){ 1512 hfp_hf_supported_features = HFP_DEFAULT_HF_SUPPORTED_FEATURES; 1513 hfp_hf_call_status = HFP_CALL_STATUS_NO_HELD_OR_ACTIVE_CALLS; 1514 hfp_hf_callsetup_status = HFP_CALLSETUP_STATUS_NO_CALL_SETUP_IN_PROGRESS; 1515 hfp_hf_callheld_status= HFP_CALLHELD_STATUS_NO_CALLS_HELD; 1516 hfp_hf_codecs_nr = 0; 1517 hfp_hf_speaker_gain = 9; 1518 hfp_hf_microphone_gain = 9; 1519 hfp_hf_indicators_nr = 0; 1520 } 1521 1522 uint8_t hfp_hf_set_default_microphone_gain(uint8_t gain){ 1523 if (gain > 15){ 1524 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 1525 } 1526 hfp_hf_microphone_gain = gain; 1527 return ERROR_CODE_SUCCESS; 1528 } 1529 1530 uint8_t hfp_hf_set_default_speaker_gain(uint8_t gain){ 1531 if (gain > 15){ 1532 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 1533 } 1534 hfp_hf_speaker_gain = gain; 1535 return ERROR_CODE_SUCCESS; 1536 } 1537 1538 uint8_t hfp_hf_init(uint8_t rfcomm_channel_nr){ 1539 uint8_t status = rfcomm_register_service(hfp_hf_rfcomm_packet_handler, rfcomm_channel_nr, 0xffff); 1540 if (status != ERROR_CODE_SUCCESS){ 1541 return status; 1542 } 1543 1544 hfp_init(); 1545 hfp_hf_set_defaults(); 1546 1547 hfp_hf_hci_event_callback_registration.callback = &hfp_hf_hci_event_packet_handler; 1548 hci_add_event_handler(&hfp_hf_hci_event_callback_registration); 1549 1550 // used to set packet handler for outgoing rfcomm connections - could be handled by emitting an event to us 1551 hfp_set_hf_rfcomm_packet_handler(&hfp_hf_rfcomm_packet_handler); 1552 return ERROR_CODE_SUCCESS; 1553 } 1554 1555 void hfp_hf_deinit(void){ 1556 hfp_deinit(); 1557 hfp_hf_set_defaults(); 1558 1559 hfp_hf_callback = NULL; 1560 (void) memset(&hfp_hf_hci_event_callback_registration, 0, sizeof(btstack_packet_callback_registration_t)); 1561 (void) memset(hfp_hf_phone_number, 0, sizeof(hfp_hf_phone_number)); 1562 } 1563 1564 void hfp_hf_init_codecs(uint8_t codecs_nr, const uint8_t * codecs){ 1565 btstack_assert(codecs_nr <= HFP_MAX_NUM_CODECS); 1566 1567 hfp_hf_codecs_nr = codecs_nr; 1568 uint8_t i; 1569 for (i=0; i<codecs_nr; i++){ 1570 hfp_hf_codecs[i] = codecs[i]; 1571 } 1572 } 1573 1574 void hfp_hf_init_supported_features(uint32_t supported_features){ 1575 hfp_hf_supported_features = supported_features; 1576 } 1577 1578 void hfp_hf_init_hf_indicators(int indicators_nr, const uint16_t * indicators){ 1579 btstack_assert(hfp_hf_indicators_nr < HFP_MAX_NUM_INDICATORS); 1580 1581 hfp_hf_indicators_nr = indicators_nr; 1582 int i; 1583 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 1584 hfp_hf_indicators[i] = (uint8_t) indicators[i]; 1585 } 1586 1587 // store copy in hfp to setup generic_status_indicators during SLC 1588 hfp_set_hf_indicators(indicators_nr, hfp_hf_indicators); 1589 } 1590 1591 uint8_t hfp_hf_establish_service_level_connection(bd_addr_t bd_addr){ 1592 return hfp_establish_service_level_connection(bd_addr, BLUETOOTH_SERVICE_CLASS_HANDSFREE_AUDIO_GATEWAY, HFP_ROLE_HF); 1593 } 1594 1595 uint8_t hfp_hf_release_service_level_connection(hci_con_handle_t acl_handle){ 1596 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1597 if (!hfp_connection){ 1598 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1599 } 1600 hfp_trigger_release_service_level_connection(hfp_connection); 1601 hfp_hf_run_for_context(hfp_connection); 1602 return ERROR_CODE_SUCCESS; 1603 } 1604 1605 static uint8_t hfp_hf_set_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle, uint8_t enable){ 1606 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1607 if (!hfp_connection) { 1608 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1609 } 1610 hfp_connection->enable_status_update_for_ag_indicators = enable; 1611 hfp_hf_run_for_context(hfp_connection); 1612 return ERROR_CODE_SUCCESS; 1613 } 1614 1615 uint8_t hfp_hf_enable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1616 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 1); 1617 } 1618 1619 uint8_t hfp_hf_disable_status_update_for_all_ag_indicators(hci_con_handle_t acl_handle){ 1620 return hfp_hf_set_status_update_for_all_ag_indicators(acl_handle, 0); 1621 } 1622 1623 // TODO: returned ERROR - wrong format 1624 uint8_t hfp_hf_set_status_update_for_individual_ag_indicators(hci_con_handle_t acl_handle, uint32_t indicators_status_bitmap){ 1625 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1626 if (!hfp_connection) { 1627 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1628 } 1629 hfp_connection->change_status_update_for_individual_ag_indicators = 1; 1630 hfp_connection->ag_indicators_status_update_bitmap = indicators_status_bitmap; 1631 hfp_hf_run_for_context(hfp_connection); 1632 return ERROR_CODE_SUCCESS; 1633 } 1634 1635 uint8_t hfp_hf_query_operator_selection(hci_con_handle_t acl_handle){ 1636 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1637 if (!hfp_connection) { 1638 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1639 } 1640 1641 switch (hfp_connection->hf_query_operator_state){ 1642 case HFP_HF_QUERY_OPERATOR_FORMAT_NOT_SET: 1643 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SET_FORMAT; 1644 break; 1645 case HFP_HF_QUERY_OPERATOR_FORMAT_SET: 1646 hfp_connection->hf_query_operator_state = HFP_HF_QUERY_OPERATOR_SEND_QUERY; 1647 break; 1648 default: 1649 return ERROR_CODE_COMMAND_DISALLOWED; 1650 } 1651 hfp_hf_run_for_context(hfp_connection); 1652 return ERROR_CODE_SUCCESS; 1653 } 1654 1655 static uint8_t hfp_hf_set_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle, uint8_t enable){ 1656 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1657 if (!hfp_connection) { 1658 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1659 } 1660 hfp_connection->enable_extended_audio_gateway_error_report = enable; 1661 hfp_hf_run_for_context(hfp_connection); 1662 return ERROR_CODE_SUCCESS; 1663 } 1664 1665 1666 uint8_t hfp_hf_enable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1667 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 1); 1668 } 1669 1670 uint8_t hfp_hf_disable_report_extended_audio_gateway_error_result_code(hci_con_handle_t acl_handle){ 1671 return hfp_hf_set_report_extended_audio_gateway_error_result_code(acl_handle, 0); 1672 } 1673 1674 static uint8_t hfp_hf_esco_s4_supported(hfp_connection_t * hfp_connection){ 1675 return (hfp_connection->remote_supported_features & (1<<HFP_AGSF_ESCO_S4)) && (hfp_hf_supported_features & (1 << HFP_HFSF_ESCO_S4)); 1676 } 1677 1678 uint8_t hfp_hf_establish_audio_connection(hci_con_handle_t acl_handle){ 1679 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1680 if (!hfp_connection) { 1681 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1682 } 1683 1684 if (hfp_connection->state == HFP_AUDIO_CONNECTION_ESTABLISHED){ 1685 return ERROR_CODE_COMMAND_DISALLOWED; 1686 } 1687 1688 if (hfp_connection->state >= HFP_W2_DISCONNECT_SCO){ 1689 return ERROR_CODE_COMMAND_DISALLOWED; 1690 } 1691 if (has_codec_negotiation_feature(hfp_connection)) { 1692 switch (hfp_connection->codecs_state) { 1693 case HFP_CODECS_W4_AG_COMMON_CODEC: 1694 break; 1695 case HFP_CODECS_EXCHANGED: 1696 hfp_connection->trigger_codec_exchange = 1; 1697 break; 1698 default: 1699 hfp_connection->codec_confirmed = 0; 1700 hfp_connection->suggested_codec = 0; 1701 hfp_connection->negotiated_codec = 0; 1702 hfp_connection->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE; 1703 hfp_connection->trigger_codec_exchange = 1; 1704 break; 1705 } 1706 } else { 1707 log_info("no codec negotiation feature, use CVSD"); 1708 hfp_connection->codecs_state = HFP_CODECS_EXCHANGED; 1709 hfp_connection->suggested_codec = HFP_CODEC_CVSD; 1710 hfp_connection->codec_confirmed = hfp_connection->suggested_codec; 1711 hfp_connection->negotiated_codec = hfp_connection->suggested_codec; 1712 hfp_init_link_settings(hfp_connection, hfp_hf_esco_s4_supported(hfp_connection)); 1713 hfp_connection->establish_audio_connection = 1; 1714 hfp_connection->state = HFP_W4_SCO_CONNECTED; 1715 } 1716 1717 hfp_hf_run_for_context(hfp_connection); 1718 return ERROR_CODE_SUCCESS; 1719 } 1720 1721 uint8_t hfp_hf_release_audio_connection(hci_con_handle_t acl_handle){ 1722 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1723 if (!hfp_connection) { 1724 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1725 } 1726 if (hfp_connection->vra_state == HFP_VRA_VOICE_RECOGNITION_ACTIVATED){ 1727 return ERROR_CODE_COMMAND_DISALLOWED; 1728 } 1729 uint8_t status = hfp_trigger_release_audio_connection(hfp_connection); 1730 if (status == ERROR_CODE_SUCCESS){ 1731 hfp_hf_run_for_context(hfp_connection); 1732 } 1733 return ERROR_CODE_SUCCESS; 1734 } 1735 1736 uint8_t hfp_hf_answer_incoming_call(hci_con_handle_t acl_handle){ 1737 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1738 if (!hfp_connection) { 1739 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1740 } 1741 1742 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 1743 hfp_connection->hf_answer_incoming_call = 1; 1744 hfp_hf_run_for_context(hfp_connection); 1745 } else { 1746 log_error("HFP HF: answering incoming call with wrong callsetup status %u", hfp_hf_callsetup_status); 1747 return ERROR_CODE_COMMAND_DISALLOWED; 1748 } 1749 return ERROR_CODE_SUCCESS; 1750 } 1751 1752 uint8_t hfp_hf_terminate_call(hci_con_handle_t acl_handle){ 1753 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1754 if (!hfp_connection) { 1755 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1756 } 1757 hfp_connection->hf_send_chup = 1; 1758 hfp_hf_run_for_context(hfp_connection); 1759 return ERROR_CODE_SUCCESS; 1760 } 1761 1762 uint8_t hfp_hf_reject_incoming_call(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_chup = 1; 1770 hfp_hf_run_for_context(hfp_connection); 1771 } 1772 return ERROR_CODE_SUCCESS; 1773 } 1774 1775 uint8_t hfp_hf_user_busy(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 if (hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS){ 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_terminate_held_calls(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 hfp_connection->hf_send_chld_0 = 1; 1795 hfp_hf_run_for_context(hfp_connection); 1796 1797 return ERROR_CODE_SUCCESS; 1798 } 1799 1800 uint8_t hfp_hf_end_active_and_accept_other(hci_con_handle_t acl_handle){ 1801 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1802 if (!hfp_connection) { 1803 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1804 } 1805 1806 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1807 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1808 hfp_connection->hf_send_chld_1 = 1; 1809 hfp_hf_run_for_context(hfp_connection); 1810 } 1811 return ERROR_CODE_SUCCESS; 1812 } 1813 1814 uint8_t hfp_hf_swap_calls(hci_con_handle_t acl_handle){ 1815 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1816 if (!hfp_connection) { 1817 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1818 } 1819 1820 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1821 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1822 hfp_connection->hf_send_chld_2 = 1; 1823 hfp_hf_run_for_context(hfp_connection); 1824 } 1825 return ERROR_CODE_SUCCESS; 1826 } 1827 1828 uint8_t hfp_hf_join_held_call(hci_con_handle_t acl_handle){ 1829 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1830 if (!hfp_connection) { 1831 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1832 } 1833 1834 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1835 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1836 hfp_connection->hf_send_chld_3 = 1; 1837 hfp_hf_run_for_context(hfp_connection); 1838 } 1839 return ERROR_CODE_SUCCESS; 1840 } 1841 1842 uint8_t hfp_hf_connect_calls(hci_con_handle_t acl_handle){ 1843 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1844 if (!hfp_connection) { 1845 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1846 } 1847 1848 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1849 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1850 hfp_connection->hf_send_chld_4 = 1; 1851 hfp_hf_run_for_context(hfp_connection); 1852 } 1853 return ERROR_CODE_SUCCESS; 1854 } 1855 1856 uint8_t hfp_hf_release_call_with_index(hci_con_handle_t acl_handle, int index){ 1857 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1858 if (!hfp_connection) { 1859 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1860 } 1861 1862 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1863 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1864 hfp_connection->hf_send_chld_x = 1; 1865 hfp_connection->hf_send_chld_x_index = 10 + index; 1866 hfp_hf_run_for_context(hfp_connection); 1867 } 1868 return ERROR_CODE_SUCCESS; 1869 } 1870 1871 uint8_t hfp_hf_private_consultation_with_call(hci_con_handle_t acl_handle, int index){ 1872 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1873 if (!hfp_connection) { 1874 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1875 } 1876 1877 if ((hfp_hf_callsetup_status == HFP_CALLSETUP_STATUS_INCOMING_CALL_SETUP_IN_PROGRESS) || 1878 (hfp_hf_call_status == HFP_CALL_STATUS_ACTIVE_OR_HELD_CALL_IS_PRESENT)){ 1879 hfp_connection->hf_send_chld_x = 1; 1880 hfp_connection->hf_send_chld_x_index = 20 + index; 1881 hfp_hf_run_for_context(hfp_connection); 1882 } 1883 return ERROR_CODE_SUCCESS; 1884 } 1885 1886 uint8_t hfp_hf_dial_number(hci_con_handle_t acl_handle, char * number){ 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_outgoing_call = 1; 1893 snprintf(hfp_hf_phone_number, sizeof(hfp_hf_phone_number), "%s", number); 1894 hfp_hf_run_for_context(hfp_connection); 1895 return ERROR_CODE_SUCCESS; 1896 } 1897 1898 uint8_t hfp_hf_dial_memory(hci_con_handle_t acl_handle, int memory_id){ 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_memory_dialing = 1; 1905 hfp_connection->memory_id = memory_id; 1906 1907 hfp_hf_run_for_context(hfp_connection); 1908 return ERROR_CODE_SUCCESS; 1909 } 1910 1911 uint8_t hfp_hf_redial_last_number(hci_con_handle_t acl_handle){ 1912 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1913 if (!hfp_connection) { 1914 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1915 } 1916 1917 hfp_connection->hf_initiate_redial_last_number = 1; 1918 hfp_hf_run_for_context(hfp_connection); 1919 return ERROR_CODE_SUCCESS; 1920 } 1921 1922 uint8_t hfp_hf_activate_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_activate_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_deactivate_call_waiting_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_deactivate_call_waiting_notification = 1; 1941 hfp_hf_run_for_context(hfp_connection); 1942 return ERROR_CODE_SUCCESS; 1943 } 1944 1945 1946 uint8_t hfp_hf_activate_calling_line_notification(hci_con_handle_t acl_handle){ 1947 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1948 if (!hfp_connection) { 1949 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1950 } 1951 1952 hfp_connection->hf_activate_calling_line_notification = 1; 1953 hfp_hf_run_for_context(hfp_connection); 1954 return ERROR_CODE_SUCCESS; 1955 } 1956 1957 uint8_t hfp_hf_deactivate_calling_line_notification(hci_con_handle_t acl_handle){ 1958 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1959 if (!hfp_connection) { 1960 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1961 } 1962 1963 hfp_connection->hf_deactivate_calling_line_notification = 1; 1964 hfp_hf_run_for_context(hfp_connection); 1965 return ERROR_CODE_SUCCESS; 1966 } 1967 1968 uint8_t hfp_hf_deactivate_echo_canceling_and_noise_reduction(hci_con_handle_t acl_handle){ 1969 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1970 if (!hfp_connection) { 1971 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1972 } 1973 if (get_bit(hfp_connection->remote_supported_features, HFP_AGSF_EC_NR_FUNCTION) == 0){ 1974 return ERROR_CODE_COMMAND_DISALLOWED; 1975 } 1976 1977 hfp_connection->hf_deactivate_echo_canceling_and_noise_reduction = 1; 1978 hfp_hf_run_for_context(hfp_connection); 1979 return ERROR_CODE_SUCCESS; 1980 } 1981 1982 uint8_t hfp_hf_activate_voice_recognition(hci_con_handle_t acl_handle){ 1983 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 1984 if (!hfp_connection) { 1985 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1986 } 1987 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 1988 return ERROR_CODE_COMMAND_DISALLOWED; 1989 } 1990 1991 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 1992 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 1993 if (!enhanced_vra_supported && !legacy_vra_supported){ 1994 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 1995 } 1996 1997 switch (hfp_connection->vra_state){ 1998 case HFP_VRA_VOICE_RECOGNITION_OFF: 1999 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 2000 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED; 2001 hfp_connection->enhanced_voice_recognition_enabled = enhanced_vra_supported; 2002 break; 2003 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 2004 hfp_connection->activate_voice_recognition = true; 2005 break; 2006 default: 2007 return ERROR_CODE_COMMAND_DISALLOWED; 2008 } 2009 2010 hfp_hf_run_for_context(hfp_connection); 2011 return ERROR_CODE_SUCCESS; 2012 } 2013 2014 uint8_t hfp_hf_enhanced_voice_recognition_report_ready_for_audio(hci_con_handle_t acl_handle){ 2015 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2016 if (!hfp_connection) { 2017 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2018 } 2019 2020 if (hfp_connection->emit_vra_enabled_after_audio_established){ 2021 return ERROR_CODE_COMMAND_DISALLOWED; 2022 } 2023 2024 if (hfp_connection->state != HFP_AUDIO_CONNECTION_ESTABLISHED){ 2025 return ERROR_CODE_COMMAND_DISALLOWED; 2026 } 2027 2028 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 2029 if (!enhanced_vra_supported){ 2030 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2031 } 2032 2033 switch (hfp_connection->vra_state){ 2034 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 2035 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2036 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO; 2037 break; 2038 default: 2039 return ERROR_CODE_COMMAND_DISALLOWED; 2040 } 2041 2042 hfp_hf_run_for_context(hfp_connection); 2043 return ERROR_CODE_SUCCESS; 2044 } 2045 2046 2047 uint8_t hfp_hf_deactivate_voice_recognition(hci_con_handle_t acl_handle){ 2048 // return deactivate_voice_recognition(acl_handle, false); 2049 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2050 if (!hfp_connection) { 2051 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2052 } 2053 2054 if (hfp_connection->emit_vra_enabled_after_audio_established){ 2055 return ERROR_CODE_COMMAND_DISALLOWED; 2056 } 2057 2058 if (hfp_connection->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED || 2059 hfp_connection->state > HFP_AUDIO_CONNECTION_ESTABLISHED){ 2060 return ERROR_CODE_COMMAND_DISALLOWED; 2061 } 2062 2063 bool enhanced_vra_supported = hfp_hf_enhanced_vra_flag_supported(hfp_connection); 2064 bool legacy_vra_supported = hfp_hf_vra_flag_supported(hfp_connection); 2065 if (!enhanced_vra_supported && !legacy_vra_supported){ 2066 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 2067 } 2068 2069 switch (hfp_connection->vra_state){ 2070 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_ACTIVATED: 2071 case HFP_VRA_VOICE_RECOGNITION_ACTIVATED: 2072 case HFP_VRA_W2_SEND_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2073 case HFP_VRA_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2074 hfp_connection->vra_state_requested = HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF; 2075 break; 2076 2077 case HFP_VRA_W4_VOICE_RECOGNITION_ACTIVATED: 2078 case HFP_VRA_W4_ENHANCED_VOICE_RECOGNITION_READY_FOR_AUDIO: 2079 hfp_connection->deactivate_voice_recognition = true; 2080 break; 2081 2082 case HFP_VRA_VOICE_RECOGNITION_OFF: 2083 case HFP_VRA_W2_SEND_VOICE_RECOGNITION_OFF: 2084 case HFP_VRA_W4_VOICE_RECOGNITION_OFF: 2085 default: 2086 return ERROR_CODE_COMMAND_DISALLOWED; 2087 } 2088 2089 hfp_hf_run_for_context(hfp_connection); 2090 return ERROR_CODE_SUCCESS; 2091 } 2092 2093 uint8_t hfp_hf_set_microphone_gain(hci_con_handle_t acl_handle, int gain){ 2094 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2095 if (!hfp_connection) { 2096 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2097 } 2098 2099 if (hfp_connection->microphone_gain == gain) { 2100 return ERROR_CODE_SUCCESS; 2101 } 2102 2103 if ((gain < 0) || (gain > 15)){ 2104 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2105 return ERROR_CODE_COMMAND_DISALLOWED; 2106 } 2107 2108 hfp_connection->microphone_gain = gain; 2109 hfp_connection->send_microphone_gain = 1; 2110 hfp_hf_run_for_context(hfp_connection); 2111 return ERROR_CODE_SUCCESS; 2112 } 2113 2114 uint8_t hfp_hf_set_speaker_gain(hci_con_handle_t acl_handle, int gain){ 2115 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2116 if (!hfp_connection) { 2117 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2118 } 2119 2120 if (hfp_connection->speaker_gain == gain){ 2121 return ERROR_CODE_SUCCESS; 2122 } 2123 2124 if ((gain < 0) || (gain > 15)){ 2125 log_info("Valid range for a gain is [0..15]. Currently sent: %d", gain); 2126 return ERROR_CODE_COMMAND_DISALLOWED; 2127 } 2128 2129 hfp_connection->speaker_gain = gain; 2130 hfp_connection->send_speaker_gain = 1; 2131 hfp_hf_run_for_context(hfp_connection); 2132 return ERROR_CODE_SUCCESS; 2133 } 2134 2135 uint8_t hfp_hf_send_dtmf_code(hci_con_handle_t acl_handle, char code){ 2136 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2137 if (!hfp_connection) { 2138 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2139 } 2140 hfp_connection->hf_send_dtmf_code = code; 2141 hfp_hf_run_for_context(hfp_connection); 2142 return ERROR_CODE_SUCCESS; 2143 } 2144 2145 uint8_t hfp_hf_request_phone_number_for_voice_tag(hci_con_handle_t acl_handle){ 2146 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2147 if (!hfp_connection) { 2148 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2149 } 2150 hfp_connection->hf_send_binp = 1; 2151 hfp_hf_run_for_context(hfp_connection); 2152 return ERROR_CODE_SUCCESS; 2153 } 2154 2155 uint8_t hfp_hf_query_current_call_status(hci_con_handle_t acl_handle){ 2156 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2157 if (!hfp_connection) { 2158 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2159 } 2160 hfp_connection->hf_send_clcc = 1; 2161 hfp_hf_run_for_context(hfp_connection); 2162 return ERROR_CODE_SUCCESS; 2163 } 2164 2165 2166 uint8_t hfp_hf_rrh_query_status(hci_con_handle_t acl_handle){ 2167 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2168 if (!hfp_connection) { 2169 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2170 } 2171 hfp_connection->hf_send_rrh = 1; 2172 hfp_connection->hf_send_rrh_command = '?'; 2173 hfp_hf_run_for_context(hfp_connection); 2174 return ERROR_CODE_SUCCESS; 2175 } 2176 2177 uint8_t hfp_hf_rrh_hold_call(hci_con_handle_t acl_handle){ 2178 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2179 if (!hfp_connection) { 2180 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2181 } 2182 hfp_connection->hf_send_rrh = 1; 2183 hfp_connection->hf_send_rrh_command = '0'; 2184 hfp_hf_run_for_context(hfp_connection); 2185 return ERROR_CODE_SUCCESS; 2186 } 2187 2188 uint8_t hfp_hf_rrh_accept_held_call(hci_con_handle_t acl_handle){ 2189 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2190 if (!hfp_connection) { 2191 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2192 } 2193 hfp_connection->hf_send_rrh = 1; 2194 hfp_connection->hf_send_rrh_command = '1'; 2195 hfp_hf_run_for_context(hfp_connection); 2196 return ERROR_CODE_SUCCESS; 2197 } 2198 2199 uint8_t hfp_hf_rrh_reject_held_call(hci_con_handle_t acl_handle){ 2200 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2201 if (!hfp_connection) { 2202 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2203 } 2204 hfp_connection->hf_send_rrh = 1; 2205 hfp_connection->hf_send_rrh_command = '2'; 2206 hfp_hf_run_for_context(hfp_connection); 2207 return ERROR_CODE_SUCCESS; 2208 } 2209 2210 uint8_t hfp_hf_query_subscriber_number(hci_con_handle_t acl_handle){ 2211 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2212 if (!hfp_connection) { 2213 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2214 } 2215 hfp_connection->hf_send_cnum = 1; 2216 hfp_hf_run_for_context(hfp_connection); 2217 return ERROR_CODE_SUCCESS; 2218 } 2219 2220 uint8_t hfp_hf_set_hf_indicator(hci_con_handle_t acl_handle, int assigned_number, int value){ 2221 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2222 if (!hfp_connection) { 2223 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2224 } 2225 // find index for assigned number 2226 int i; 2227 for (i = 0; i < hfp_hf_indicators_nr ; i++){ 2228 if (hfp_hf_indicators[i] == assigned_number){ 2229 // set value 2230 hfp_hf_indicators_value[i] = value; 2231 // mark for update 2232 if (hfp_connection->state > HFP_LIST_GENERIC_STATUS_INDICATORS){ 2233 hfp_connection->generic_status_update_bitmap |= (1<<i); 2234 // send update 2235 hfp_hf_run_for_context(hfp_connection); 2236 } 2237 return ERROR_CODE_SUCCESS; 2238 } 2239 } 2240 return ERROR_CODE_SUCCESS; 2241 } 2242 2243 uint8_t hfp_hf_send_at_command(hci_con_handle_t acl_handle, const char * at_command){ 2244 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2245 if (!hfp_connection) { 2246 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 2247 } 2248 if (hfp_connection->send_custom_message != NULL){ 2249 return ERROR_CODE_COMMAND_DISALLOWED; 2250 } 2251 hfp_connection->send_custom_message = at_command; 2252 hfp_hf_run_for_context(hfp_connection); 2253 return ERROR_CODE_SUCCESS; 2254 } 2255 2256 int hfp_hf_in_band_ringtone_active(hci_con_handle_t acl_handle){ 2257 hfp_connection_t * hfp_connection = get_hfp_hf_connection_context_for_acl_handle(acl_handle); 2258 if (!hfp_connection) { 2259 return 0; 2260 } 2261 return get_bit(hfp_connection->remote_supported_features, HFP_AGSF_IN_BAND_RING_TONE); 2262 } 2263 2264 void hfp_hf_create_sdp_record_with_codecs(uint8_t * service, uint32_t service_record_handle, int rfcomm_channel_nr, 2265 const char * name, uint16_t supported_features, uint8_t codecs_nr, const uint8_t * codecs){ 2266 if (!name){ 2267 name = hfp_hf_default_service_name; 2268 } 2269 hfp_create_sdp_record(service, service_record_handle, BLUETOOTH_SERVICE_CLASS_HANDSFREE, rfcomm_channel_nr, name); 2270 2271 // Construct SupportedFeatures for SDP bitmap: 2272 // 2273 // "The values of the “SupportedFeatures” bitmap given in Table 5.4 shall be the same as the values 2274 // of the Bits 0 to 4 of the unsolicited result code +BRSF" 2275 // 2276 // Wide band speech (bit 5) and LC3-SWB (bit 8) require Codec negotiation 2277 // 2278 uint16_t sdp_features = supported_features & 0x1f; 2279 2280 if (supported_features & (1 << HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS)){ 2281 sdp_features |= 1 << 6; 2282 } 2283 2284 if (supported_features & (1 << HFP_HFSF_VOICE_RECOGNITION_TEXT)){ 2285 sdp_features |= 1 << 7; 2286 } 2287 2288 // codecs 2289 if ((supported_features & (1 << HFP_HFSF_CODEC_NEGOTIATION)) != 0){ 2290 uint8_t i; 2291 for (i=0;i<codecs_nr;i++){ 2292 switch (codecs[i]){ 2293 case HFP_CODEC_MSBC: 2294 sdp_features |= 1 << 5; 2295 break; 2296 case HFP_CODEC_LC3_SWB: 2297 sdp_features |= 1 << 8; 2298 break; 2299 default: 2300 break; 2301 } 2302 } 2303 } 2304 2305 de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SUPPORTED_FEATURES); 2306 de_add_number(service, DE_UINT, DE_SIZE_16, sdp_features); 2307 } 2308 2309 // @deprecated, call new API 2310 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){ 2311 uint8_t codecs_nr; 2312 const uint8_t * codecs; 2313 const uint8_t wide_band_codecs[] = { HFP_CODEC_MSBC }; 2314 if (wide_band_speech == 0){ 2315 codecs_nr = 0; 2316 codecs = NULL; 2317 } else { 2318 codecs_nr = 1; 2319 codecs = wide_band_codecs; 2320 } 2321 hfp_hf_create_sdp_record_with_codecs(service, service_record_handle, rfcomm_channel_nr, name, supported_features, codecs_nr, codecs); 2322 } 2323 2324 void hfp_hf_register_custom_at_command(hfp_custom_at_command_t * custom_at_command){ 2325 hfp_register_custom_hf_command(custom_at_command); 2326 } 2327 2328 void hfp_hf_register_packet_handler(btstack_packet_handler_t callback){ 2329 btstack_assert(callback != NULL); 2330 2331 hfp_hf_callback = callback; 2332 hfp_set_hf_callback(callback); 2333 } 2334