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518 lines
18 KiB
518 lines
18 KiB
/******************************************************************************
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*
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* Copyright 2003-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* This file contains the audio gateway functions performing SDP
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* operations.
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*
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******************************************************************************/
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#include <base/bind.h>
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#include <base/location.h>
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#include "bt_target.h" // Legacy stack config
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#include "bt_trace.h" // Legacy trace logging
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#include "bta/ag/bta_ag_int.h"
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#include "btif/include/btif_config.h"
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#include "stack/include/btm_api.h"
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#include "stack/include/btu.h" // do_in_main_thread
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#include "stack/include/port_api.h"
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#include "types/bluetooth/uuid.h"
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using bluetooth::Uuid;
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/* Number of protocol elements in protocol element list. */
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#define BTA_AG_NUM_PROTO_ELEMS 2
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/* Number of elements in service class id list. */
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#define BTA_AG_NUM_SVC_ELEMS 2
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/* size of database for service discovery */
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#ifndef BTA_AG_DISC_BUF_SIZE
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#define BTA_AG_DISC_BUF_SIZE BT_DEFAULT_BUFFER_SIZE
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#endif
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/* declare sdp callback functions */
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void bta_ag_sdp_cback_1(tSDP_RESULT);
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void bta_ag_sdp_cback_2(tSDP_RESULT);
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void bta_ag_sdp_cback_3(tSDP_RESULT);
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void bta_ag_sdp_cback_4(tSDP_RESULT);
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void bta_ag_sdp_cback_5(tSDP_RESULT);
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void bta_ag_sdp_cback_6(tSDP_RESULT);
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/* SDP callback function table */
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typedef tSDP_DISC_CMPL_CB* tBTA_AG_SDP_CBACK;
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const tBTA_AG_SDP_CBACK bta_ag_sdp_cback_tbl[] = {
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bta_ag_sdp_cback_1, bta_ag_sdp_cback_2, bta_ag_sdp_cback_3,
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bta_ag_sdp_cback_4, bta_ag_sdp_cback_5, bta_ag_sdp_cback_6};
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/*******************************************************************************
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*
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* Function bta_ag_sdp_cback
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*
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* Description SDP callback function.
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*
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*
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* Returns void
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*
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******************************************************************************/
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static void bta_ag_sdp_cback(uint16_t status, uint8_t idx) {
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APPL_TRACE_DEBUG("%s status:0x%x", __func__, status);
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tBTA_AG_SCB* p_scb = bta_ag_scb_by_idx(idx);
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if (p_scb) {
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uint16_t event;
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/* set event according to int/acp */
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if (p_scb->role == BTA_AG_ACP) {
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event = BTA_AG_DISC_ACP_RES_EVT;
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} else {
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event = BTA_AG_DISC_INT_RES_EVT;
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}
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tBTA_AG_DATA disc_result = {.disc_result = {.status = status}};
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do_in_main_thread(FROM_HERE, base::Bind(&bta_ag_sm_execute_by_handle, idx,
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event, disc_result));
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}
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}
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/*******************************************************************************
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*
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* Function bta_ag_sdp_cback_1 to 6
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*
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* Description SDP callback functions. Since there is no way to
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* distinguish scb from the callback we need separate
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* callbacks for each scb.
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*
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*
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* Returns void
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*
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******************************************************************************/
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void bta_ag_sdp_cback_1(tSDP_STATUS status) { bta_ag_sdp_cback(status, 1); }
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void bta_ag_sdp_cback_2(tSDP_STATUS status) { bta_ag_sdp_cback(status, 2); }
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void bta_ag_sdp_cback_3(tSDP_STATUS status) { bta_ag_sdp_cback(status, 3); }
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void bta_ag_sdp_cback_4(tSDP_STATUS status) { bta_ag_sdp_cback(status, 4); }
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void bta_ag_sdp_cback_5(tSDP_STATUS status) { bta_ag_sdp_cback(status, 5); }
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void bta_ag_sdp_cback_6(tSDP_STATUS status) { bta_ag_sdp_cback(status, 6); }
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/******************************************************************************
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*
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* Function bta_ag_add_record
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*
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* Description This function is called by a server application to add
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* HSP or HFP information to an SDP record. Prior to
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* calling this function the application must call
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* SDP_CreateRecord() to create an SDP record.
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*
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* Returns true if function execution succeeded,
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* false if function execution failed.
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*
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*****************************************************************************/
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bool bta_ag_add_record(uint16_t service_uuid, const char* p_service_name,
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uint8_t scn, tBTA_AG_FEAT features,
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uint32_t sdp_handle) {
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tSDP_PROTOCOL_ELEM proto_elem_list[BTA_AG_NUM_PROTO_ELEMS];
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uint16_t svc_class_id_list[BTA_AG_NUM_SVC_ELEMS];
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uint16_t browse_list[] = {UUID_SERVCLASS_PUBLIC_BROWSE_GROUP};
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uint16_t version;
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uint16_t profile_uuid;
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uint8_t network;
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bool result = true;
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bool codec_supported = false;
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uint8_t buf[2];
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APPL_TRACE_DEBUG("%s uuid: %x", __func__, service_uuid);
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for (auto& proto_element : proto_elem_list) {
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proto_element = {};
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}
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/* add the protocol element sequence */
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proto_elem_list[0].protocol_uuid = UUID_PROTOCOL_L2CAP;
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proto_elem_list[0].num_params = 0;
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proto_elem_list[1].protocol_uuid = UUID_PROTOCOL_RFCOMM;
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proto_elem_list[1].num_params = 1;
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proto_elem_list[1].params[0] = scn;
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result &=
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SDP_AddProtocolList(sdp_handle, BTA_AG_NUM_PROTO_ELEMS, proto_elem_list);
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/* add service class id list */
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svc_class_id_list[0] = service_uuid;
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svc_class_id_list[1] = UUID_SERVCLASS_GENERIC_AUDIO;
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result &= SDP_AddServiceClassIdList(sdp_handle, BTA_AG_NUM_SVC_ELEMS,
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svc_class_id_list);
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/* add profile descriptor list */
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if (service_uuid == UUID_SERVCLASS_AG_HANDSFREE) {
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profile_uuid = UUID_SERVCLASS_HF_HANDSFREE;
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version = BTA_HFP_VERSION;
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} else {
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profile_uuid = UUID_SERVCLASS_HEADSET;
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version = HSP_VERSION_1_2;
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}
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result &= SDP_AddProfileDescriptorList(sdp_handle, profile_uuid, version);
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/* add service name */
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if (p_service_name != nullptr && p_service_name[0] != 0) {
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result &= SDP_AddAttribute(
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sdp_handle, ATTR_ID_SERVICE_NAME, TEXT_STR_DESC_TYPE,
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(uint32_t)(strlen(p_service_name) + 1), (uint8_t*)p_service_name);
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}
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/* add features and network */
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if (service_uuid == UUID_SERVCLASS_AG_HANDSFREE) {
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network = (features & BTA_AG_FEAT_REJECT) ? 1 : 0;
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result &= SDP_AddAttribute(sdp_handle, ATTR_ID_DATA_STORES_OR_NETWORK,
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UINT_DESC_TYPE, 1, &network);
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if (features & BTA_AG_FEAT_CODEC) codec_supported = true;
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features &= BTA_AG_SDP_FEAT_SPEC;
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/* Codec bit position is different in SDP and in BRSF */
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if (codec_supported) features |= 0x0020;
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UINT16_TO_BE_FIELD(buf, features);
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result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SUPPORTED_FEATURES,
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UINT_DESC_TYPE, 2, buf);
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}
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/* add browse group list */
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result &= SDP_AddUuidSequence(sdp_handle, ATTR_ID_BROWSE_GROUP_LIST, 1,
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browse_list);
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return result;
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}
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/*******************************************************************************
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*
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* Function bta_ag_create_records
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*
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* Description Create SDP records for registered services.
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*
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*
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* Returns void
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*
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******************************************************************************/
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void bta_ag_create_records(tBTA_AG_SCB* p_scb, const tBTA_AG_DATA& data) {
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int i;
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tBTA_SERVICE_MASK services;
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services = p_scb->reg_services >> BTA_HSP_SERVICE_ID;
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for (i = 0; i < BTA_AG_NUM_IDX && services != 0; i++, services >>= 1) {
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/* if service is set in mask */
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if (services & 1) {
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/* add sdp record if not already registered */
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if (bta_ag_cb.profile[i].sdp_handle == 0) {
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bta_ag_cb.profile[i].sdp_handle = SDP_CreateRecord();
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bta_ag_cb.profile[i].scn = BTM_AllocateSCN();
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bta_ag_add_record(bta_ag_uuid[i], data.api_register.p_name[i],
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bta_ag_cb.profile[i].scn, data.api_register.features,
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bta_ag_cb.profile[i].sdp_handle);
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bta_sys_add_uuid(bta_ag_uuid[i]);
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}
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}
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}
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}
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/*******************************************************************************
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*
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* Function bta_ag_del_records
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*
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* Description Delete SDP records for any registered services.
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*
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*
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* Returns void
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*
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******************************************************************************/
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void bta_ag_del_records(tBTA_AG_SCB* p_scb) {
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tBTA_AG_SCB* p = &bta_ag_cb.scb[0];
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tBTA_SERVICE_MASK services;
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tBTA_SERVICE_MASK others = 0;
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int i;
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/* get services of all other registered servers */
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for (i = 0; i < BTA_AG_NUM_IDX; i++, p++) {
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if (p_scb == p) {
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continue;
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}
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if (p->in_use && !p->dealloc) {
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others |= p->reg_services;
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}
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}
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others >>= BTA_HSP_SERVICE_ID;
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services = p_scb->reg_services >> BTA_HSP_SERVICE_ID;
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for (i = 0; i < BTA_AG_NUM_IDX && services != 0;
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i++, services >>= 1, others >>= 1) {
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/* if service registered for this scb and not registered for any other scb
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*/
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if (((services & 1) == 1) && ((others & 1) == 0)) {
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APPL_TRACE_DEBUG("bta_ag_del_records %d", i);
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if (bta_ag_cb.profile[i].sdp_handle != 0) {
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SDP_DeleteRecord(bta_ag_cb.profile[i].sdp_handle);
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bta_ag_cb.profile[i].sdp_handle = 0;
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}
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BTM_FreeSCN(bta_ag_cb.profile[i].scn);
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RFCOMM_ClearSecurityRecord(bta_ag_cb.profile[i].scn);
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bta_sys_remove_uuid(bta_ag_uuid[i]);
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}
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}
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}
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/*******************************************************************************
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*
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* Function bta_ag_sdp_find_attr
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*
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* Description Process SDP discovery results to find requested attributes
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* for requested service.
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*
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*
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* Returns true if results found, false otherwise.
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*
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******************************************************************************/
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bool bta_ag_sdp_find_attr(tBTA_AG_SCB* p_scb, tBTA_SERVICE_MASK service) {
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tSDP_DISC_REC* p_rec = nullptr;
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tSDP_DISC_ATTR* p_attr;
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tSDP_PROTOCOL_ELEM pe;
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uint16_t uuid;
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bool result = false;
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if (service & BTA_HFP_SERVICE_MASK) {
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uuid = UUID_SERVCLASS_HF_HANDSFREE;
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/* If there is no cached peer version, use default one */
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if (p_scb->peer_version == HFP_HSP_VERSION_UNKNOWN) {
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p_scb->peer_version = HFP_VERSION_1_1; /* Default version */
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}
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} else if (service & BTA_HSP_SERVICE_MASK && p_scb->role == BTA_AG_INT) {
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uuid = UUID_SERVCLASS_HEADSET_HS;
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p_scb->peer_version = HSP_VERSION_1_2; /* Default version */
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} else {
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uuid = UUID_SERVCLASS_HEADSET_HS;
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p_scb->peer_version = HSP_VERSION_1_0;
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}
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/* loop through all records we found */
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while (true) {
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/* get next record; if none found, we're done */
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p_rec = SDP_FindServiceInDb(p_scb->p_disc_db, uuid, p_rec);
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if (p_rec == nullptr) {
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if (uuid == UUID_SERVCLASS_HEADSET_HS) {
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/* Search again in case the peer device uses the old HSP UUID */
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uuid = UUID_SERVCLASS_HEADSET;
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p_scb->peer_version = HSP_VERSION_1_0;
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p_rec = SDP_FindServiceInDb(p_scb->p_disc_db, uuid, p_rec);
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if (p_rec == nullptr) {
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break;
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}
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} else
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break;
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}
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/* get scn from proto desc list if initiator */
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if (p_scb->role == BTA_AG_INT) {
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if (SDP_FindProtocolListElemInRec(p_rec, UUID_PROTOCOL_RFCOMM, &pe)) {
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p_scb->peer_scn = (uint8_t)pe.params[0];
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} else {
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continue;
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}
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}
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/* get profile version (if failure, version parameter is not updated) */
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uint16_t peer_version = HFP_HSP_VERSION_UNKNOWN;
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if (!SDP_FindProfileVersionInRec(p_rec, uuid, &peer_version)) {
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APPL_TRACE_WARNING("%s: Get peer_version failed, using default 0x%04x",
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__func__, p_scb->peer_version);
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peer_version = p_scb->peer_version;
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}
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if (service & BTA_HFP_SERVICE_MASK) {
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/* Update cached peer version if the new one is different */
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if (peer_version != p_scb->peer_version) {
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p_scb->peer_version = peer_version;
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if (btif_config_set_bin(
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p_scb->peer_addr.ToString(), HFP_VERSION_CONFIG_KEY,
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(const uint8_t*)&peer_version, sizeof(peer_version))) {
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btif_config_save();
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} else {
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APPL_TRACE_WARNING("%s: Failed to store peer HFP version for %s",
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__func__, p_scb->peer_addr.ToString().c_str());
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}
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}
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/* get features if HFP */
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p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_SUPPORTED_FEATURES);
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if (p_attr != nullptr) {
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/* Found attribute. Get value. */
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/* There might be race condition between SDP and BRSF. */
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/* Do not update if we already received BRSF. */
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uint16_t sdp_features = p_attr->attr_value.v.u16;
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bool sdp_wbs_support = sdp_features & BTA_AG_FEAT_WBS_SUPPORT;
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if (!p_scb->received_at_bac && sdp_wbs_support) {
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// Workaround for misbehaving HFs (e.g. some Hyundai car kit) that:
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// 1. Indicate WBS support in SDP and codec negotiation in BRSF
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// 2. But do not send required AT+BAC command
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// Will assume mSBC is enabled and try codec negotiation by default
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p_scb->codec_updated = true;
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p_scb->peer_codecs = BTA_AG_CODEC_CVSD & BTA_AG_CODEC_MSBC;
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p_scb->sco_codec = UUID_CODEC_MSBC;
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}
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if (sdp_features != p_scb->peer_sdp_features) {
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p_scb->peer_sdp_features = sdp_features;
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if (btif_config_set_bin(
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p_scb->peer_addr.ToString(), HFP_SDP_FEATURES_CONFIG_KEY,
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(const uint8_t*)&sdp_features, sizeof(sdp_features))) {
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btif_config_save();
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} else {
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APPL_TRACE_WARNING(
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"%s: Failed to store peer HFP SDP Features for %s", __func__,
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p_scb->peer_addr.ToString().c_str());
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}
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}
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if (p_scb->peer_features == 0) {
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p_scb->peer_features = sdp_features & HFP_SDP_BRSF_FEATURES_MASK;
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}
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}
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} else {
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/* No peer version caching for HSP, use discovered one directly */
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p_scb->peer_version = peer_version;
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/* get features if HSP */
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p_attr =
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SDP_FindAttributeInRec(p_rec, ATTR_ID_REMOTE_AUDIO_VOLUME_CONTROL);
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if (p_attr != nullptr) {
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/* Remote volume control of HSP */
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if (p_attr->attr_value.v.u8)
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p_scb->peer_features |= BTA_AG_PEER_FEAT_VOL;
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else
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p_scb->peer_features &= ~BTA_AG_PEER_FEAT_VOL;
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}
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}
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/* found what we needed */
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result = true;
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break;
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}
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return result;
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}
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/*******************************************************************************
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*
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* Function bta_ag_do_disc
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*
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* Description Do service discovery.
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*
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*
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* Returns void
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*
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******************************************************************************/
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void bta_ag_do_disc(tBTA_AG_SCB* p_scb, tBTA_SERVICE_MASK service) {
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Uuid uuid_list[1];
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uint16_t num_uuid = 1;
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uint16_t attr_list[4];
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uint8_t num_attr;
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/* HFP initiator; get proto list and features */
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if (service & BTA_HFP_SERVICE_MASK && p_scb->role == BTA_AG_INT) {
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attr_list[0] = ATTR_ID_SERVICE_CLASS_ID_LIST;
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attr_list[1] = ATTR_ID_PROTOCOL_DESC_LIST;
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attr_list[2] = ATTR_ID_BT_PROFILE_DESC_LIST;
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attr_list[3] = ATTR_ID_SUPPORTED_FEATURES;
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num_attr = 4;
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uuid_list[0] = Uuid::From16Bit(UUID_SERVCLASS_HF_HANDSFREE);
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}
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/* HFP acceptor; get features */
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else if (service & BTA_HFP_SERVICE_MASK && p_scb->role == BTA_AG_ACP) {
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attr_list[0] = ATTR_ID_SERVICE_CLASS_ID_LIST;
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attr_list[1] = ATTR_ID_BT_PROFILE_DESC_LIST;
|
|
attr_list[2] = ATTR_ID_SUPPORTED_FEATURES;
|
|
num_attr = 3;
|
|
uuid_list[0] = Uuid::From16Bit(UUID_SERVCLASS_HF_HANDSFREE);
|
|
}
|
|
/* HSP initiator; get proto list */
|
|
else if (service & BTA_HSP_SERVICE_MASK && p_scb->role == BTA_AG_INT) {
|
|
attr_list[0] = ATTR_ID_SERVICE_CLASS_ID_LIST;
|
|
attr_list[1] = ATTR_ID_PROTOCOL_DESC_LIST;
|
|
attr_list[2] = ATTR_ID_BT_PROFILE_DESC_LIST;
|
|
attr_list[3] = ATTR_ID_REMOTE_AUDIO_VOLUME_CONTROL;
|
|
num_attr = 4;
|
|
// Although UUID_SERVCLASS_HEADSET_HS (0x1131) is to be used in HSP 1.2,
|
|
// some HSP 1.2 implementations, such as PTS, still use
|
|
// UUID_SERVCLASS_HEADSET (0x1108) to store its service record. However,
|
|
// most of such devices are HSP 1.0 devices.
|
|
if (p_scb->hsp_version >= HSP_VERSION_1_2) {
|
|
uuid_list[0] = Uuid::From16Bit(UUID_SERVCLASS_HEADSET_HS);
|
|
} else {
|
|
uuid_list[0] = Uuid::From16Bit(UUID_SERVCLASS_HEADSET);
|
|
}
|
|
} else {
|
|
/* HSP acceptor; get features */
|
|
attr_list[0] = ATTR_ID_SERVICE_CLASS_ID_LIST;
|
|
attr_list[1] = ATTR_ID_PROTOCOL_DESC_LIST;
|
|
attr_list[2] = ATTR_ID_BT_PROFILE_DESC_LIST;
|
|
attr_list[3] = ATTR_ID_REMOTE_AUDIO_VOLUME_CONTROL;
|
|
num_attr = 4;
|
|
|
|
if (p_scb->hsp_version >= HSP_VERSION_1_2) {
|
|
uuid_list[0] = Uuid::From16Bit(UUID_SERVCLASS_HEADSET_HS);
|
|
} else {
|
|
/* Legacy from HSP v1.0 */
|
|
uuid_list[0] = Uuid::From16Bit(UUID_SERVCLASS_HEADSET);
|
|
}
|
|
}
|
|
|
|
if (p_scb->p_disc_db != nullptr) {
|
|
android_errorWriteLog(0x534e4554, "174052148");
|
|
LOG_ERROR("Discovery already in progress... returning.");
|
|
return;
|
|
}
|
|
|
|
/* allocate buffer for sdp database */
|
|
p_scb->p_disc_db = (tSDP_DISCOVERY_DB*)osi_malloc(BTA_AG_DISC_BUF_SIZE);
|
|
/* set up service discovery database; attr happens to be attr_list len */
|
|
if (SDP_InitDiscoveryDb(p_scb->p_disc_db, BTA_AG_DISC_BUF_SIZE, num_uuid,
|
|
uuid_list, num_attr, attr_list)) {
|
|
if (SDP_ServiceSearchAttributeRequest(
|
|
p_scb->peer_addr, p_scb->p_disc_db,
|
|
bta_ag_sdp_cback_tbl[bta_ag_scb_to_idx(p_scb) - 1])) {
|
|
return;
|
|
} else {
|
|
LOG(ERROR) << __func__ << ": failed to start SDP discovery for "
|
|
<< p_scb->peer_addr;
|
|
}
|
|
} else {
|
|
LOG(ERROR) << __func__ << ": failed to init SDP discovery database for "
|
|
<< p_scb->peer_addr;
|
|
}
|
|
// Failure actions
|
|
bta_ag_free_db(p_scb, tBTA_AG_DATA::kEmpty);
|
|
bta_ag_sm_execute(p_scb, BTA_AG_DISC_FAIL_EVT, tBTA_AG_DATA::kEmpty);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* Function bta_ag_free_db
|
|
*
|
|
* Description Free discovery database.
|
|
*
|
|
*
|
|
* Returns void
|
|
*
|
|
******************************************************************************/
|
|
void bta_ag_free_db(tBTA_AG_SCB* p_scb, const tBTA_AG_DATA& data) {
|
|
osi_free_and_reset((void**)&p_scb->p_disc_db);
|
|
}
|