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362 lines
12 KiB
362 lines
12 KiB
/****************************************************************************** |
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* |
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* Copyright (c) 2014 The Android Open Source Project |
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* Copyright (C) 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 <string.h> |
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#include "bt_utils.h" |
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#include "bta_api.h" |
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#include "bta_hf_client_api.h" |
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#include "bta_hf_client_int.h" |
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#include "bta_sys.h" |
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#include "osi/include/osi.h" |
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/* Number of protocol elements in protocol element list. */ |
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#define BTA_HF_CLIENT_NUM_PROTO_ELEMS 2 |
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/* Number of elements in service class id list. */ |
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#define BTA_HF_CLIENT_NUM_SVC_ELEMS 2 |
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/******************************************************************************* |
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* |
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* Function bta_hf_client_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_hf_client_sdp_cback(uint16_t status, void* data) { |
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uint16_t event; |
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tBTA_HF_CLIENT_DISC_RESULT* p_buf = (tBTA_HF_CLIENT_DISC_RESULT*)osi_malloc( |
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sizeof(tBTA_HF_CLIENT_DISC_RESULT)); |
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APPL_TRACE_DEBUG("bta_hf_client_sdp_cback status:0x%x", status); |
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tBTA_HF_CLIENT_CB* client_cb = (tBTA_HF_CLIENT_CB*)data; |
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/* set event according to int/acp */ |
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if (client_cb->role == BTA_HF_CLIENT_ACP) |
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event = BTA_HF_CLIENT_DISC_ACP_RES_EVT; |
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else |
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event = BTA_HF_CLIENT_DISC_INT_RES_EVT; |
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p_buf->hdr.event = event; |
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p_buf->hdr.layer_specific = client_cb->handle; |
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p_buf->status = status; |
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bta_sys_sendmsg(p_buf); |
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} |
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/****************************************************************************** |
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* |
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* Function bta_hf_client_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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* HFP Client 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_hf_client_add_record(const char* p_service_name, uint8_t scn, |
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tBTA_HF_CLIENT_FEAT features, |
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uint32_t sdp_handle) { |
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tSDP_PROTOCOL_ELEM proto_elem_list[BTA_HF_CLIENT_NUM_PROTO_ELEMS]; |
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uint16_t svc_class_id_list[BTA_HF_CLIENT_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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bool result = true; |
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uint8_t buf[2]; |
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uint16_t sdp_features = 0; |
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APPL_TRACE_DEBUG("bta_hf_client_add_record"); |
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memset(proto_elem_list, 0, |
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BTA_HF_CLIENT_NUM_PROTO_ELEMS * sizeof(tSDP_PROTOCOL_ELEM)); |
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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 &= SDP_AddProtocolList(sdp_handle, BTA_HF_CLIENT_NUM_PROTO_ELEMS, |
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proto_elem_list); |
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/* add service class id list */ |
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svc_class_id_list[0] = UUID_SERVCLASS_HF_HANDSFREE; |
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svc_class_id_list[1] = UUID_SERVCLASS_GENERIC_AUDIO; |
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result &= SDP_AddServiceClassIdList(sdp_handle, BTA_HF_CLIENT_NUM_SVC_ELEMS, |
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svc_class_id_list); |
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/* add profile descriptor list */ |
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profile_uuid = UUID_SERVCLASS_HF_HANDSFREE; |
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version = HFP_VERSION_1_6; |
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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 != NULL && 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 */ |
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if (features & BTA_HF_CLIENT_FEAT_ECNR) |
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sdp_features |= BTA_HF_CLIENT_FEAT_ECNR; |
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if (features & BTA_HF_CLIENT_FEAT_3WAY) |
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sdp_features |= BTA_HF_CLIENT_FEAT_3WAY; |
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if (features & BTA_HF_CLIENT_FEAT_CLI) sdp_features |= BTA_HF_CLIENT_FEAT_CLI; |
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if (features & BTA_HF_CLIENT_FEAT_VREC) |
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sdp_features |= BTA_HF_CLIENT_FEAT_VREC; |
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if (features & BTA_HF_CLIENT_FEAT_VOL) sdp_features |= BTA_HF_CLIENT_FEAT_VOL; |
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/* Codec bit position is different in SDP (bit 5) and in BRSF (bit 7) */ |
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if (features & BTA_HF_CLIENT_FEAT_CODEC) sdp_features |= 0x0020; |
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UINT16_TO_BE_FIELD(buf, sdp_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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/* 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_hf_client_create_record |
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* |
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* Description Create SDP record for registered service. |
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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_hf_client_create_record(tBTA_HF_CLIENT_CB_ARR* client_cb_arr, |
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const char* p_service_name) { |
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/* add sdp record if not already registered */ |
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if (client_cb_arr->sdp_handle == 0) { |
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client_cb_arr->sdp_handle = SDP_CreateRecord(); |
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client_cb_arr->scn = BTM_AllocateSCN(); |
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bta_hf_client_add_record(p_service_name, client_cb_arr->scn, |
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client_cb_arr->features, |
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client_cb_arr->sdp_handle); |
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bta_sys_add_uuid(UUID_SERVCLASS_HF_HANDSFREE); |
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} |
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} |
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/******************************************************************************* |
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* |
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* Function bta_hf_client_del_record |
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* |
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* Description Delete SDP record for registered service. |
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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_hf_client_del_record(tBTA_HF_CLIENT_CB_ARR* client_cb) { |
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APPL_TRACE_DEBUG("%s", __func__); |
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if (client_cb->sdp_handle != 0) { |
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SDP_DeleteRecord(client_cb->sdp_handle); |
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client_cb->sdp_handle = 0; |
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BTM_FreeSCN(client_cb->scn); |
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BTM_SecClrService(BTM_SEC_SERVICE_HF_HANDSFREE); |
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bta_sys_remove_uuid(UUID_SERVCLASS_HF_HANDSFREE); |
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} |
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} |
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/******************************************************************************* |
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* |
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* Function bta_hf_client_sdp_find_attr |
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* |
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* Description Process SDP discovery results to find requested attribute |
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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_hf_client_sdp_find_attr(tBTA_HF_CLIENT_CB* client_cb) { |
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tSDP_DISC_REC* p_rec = NULL; |
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tSDP_DISC_ATTR* p_attr; |
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tSDP_PROTOCOL_ELEM pe; |
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bool result = false; |
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client_cb->peer_version = HFP_VERSION_1_1; /* Default version */ |
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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(client_cb->p_disc_db, |
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UUID_SERVCLASS_AG_HANDSFREE, p_rec); |
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if (p_rec == NULL) { |
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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 (client_cb->role == BTA_HF_CLIENT_INT) { |
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if (SDP_FindProtocolListElemInRec(p_rec, UUID_PROTOCOL_RFCOMM, &pe)) { |
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client_cb->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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SDP_FindProfileVersionInRec(p_rec, UUID_SERVCLASS_HF_HANDSFREE, |
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&client_cb->peer_version); |
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/* get features */ |
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p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_SUPPORTED_FEATURES); |
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if (p_attr != NULL) { |
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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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if (client_cb->peer_features == 0) { |
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client_cb->peer_features = p_attr->attr_value.v.u16; |
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/* SDP and BRSF WBS bit are different, correct it if set */ |
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if (client_cb->peer_features & 0x0020) { |
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client_cb->peer_features &= ~0x0020; |
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client_cb->peer_features |= BTA_HF_CLIENT_PEER_CODEC; |
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} |
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/* get network for ability to reject calls */ |
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p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_NETWORK); |
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if (p_attr != NULL) { |
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if (p_attr->attr_value.v.u16 == 0x01) { |
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client_cb->peer_features |= BTA_HF_CLIENT_PEER_REJECT; |
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} |
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} |
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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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APPL_TRACE_DEBUG("%s: peer_version=0x%x peer_features=0x%x", __func__, |
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client_cb->peer_version, client_cb->peer_features); |
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return result; |
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} |
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/******************************************************************************* |
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* |
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* Function bta_hf_client_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_hf_client_do_disc(tBTA_HF_CLIENT_CB* client_cb) { |
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tSDP_UUID uuid_list[2]; |
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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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bool db_inited = false; |
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/* initiator; get proto list and features */ |
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if (client_cb->role == BTA_HF_CLIENT_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].uu.uuid16 = UUID_SERVCLASS_AG_HANDSFREE; |
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} |
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/* acceptor; get features */ |
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else { |
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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; |
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attr_list[2] = ATTR_ID_SUPPORTED_FEATURES; |
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num_attr = 3; |
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uuid_list[0].uu.uuid16 = UUID_SERVCLASS_AG_HANDSFREE; |
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} |
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/* allocate buffer for sdp database */ |
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client_cb->p_disc_db = (tSDP_DISCOVERY_DB*)osi_malloc(BT_DEFAULT_BUFFER_SIZE); |
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/* set up service discovery database; attr happens to be attr_list len */ |
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uuid_list[0].len = LEN_UUID_16; |
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uuid_list[1].len = LEN_UUID_16; |
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db_inited = SDP_InitDiscoveryDb(client_cb->p_disc_db, BT_DEFAULT_BUFFER_SIZE, |
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num_uuid, uuid_list, num_attr, attr_list); |
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if (db_inited) { |
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/*Service discovery not initiated */ |
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db_inited = SDP_ServiceSearchAttributeRequest2( |
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client_cb->peer_addr, client_cb->p_disc_db, bta_hf_client_sdp_cback, |
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(void*)client_cb); |
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} |
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if (!db_inited) { |
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/*free discover db */ |
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bta_hf_client_free_db(NULL); |
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/* sent failed event */ |
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tBTA_HF_CLIENT_DATA msg; |
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msg.hdr.layer_specific = client_cb->handle; |
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bta_hf_client_sm_execute(BTA_HF_CLIENT_DISC_FAIL_EVT, &msg); |
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} |
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} |
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/******************************************************************************* |
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* |
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* Function bta_hf_client_free_db |
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* |
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* Description Free discovery database. |
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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_hf_client_free_db(tBTA_HF_CLIENT_DATA* p_data) { |
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tBTA_HF_CLIENT_CB* client_cb = |
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bta_hf_client_find_cb_by_handle(p_data->hdr.layer_specific); |
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if (client_cb == NULL) { |
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APPL_TRACE_ERROR("%s: cb not found for handle %d", __func__, |
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p_data->hdr.layer_specific); |
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return; |
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} |
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osi_free_and_reset((void**)&client_cb->p_disc_db); |
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}
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