446 lines
No EOL
16 KiB
C
446 lines
No EOL
16 KiB
C
/******************************************************************************
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*
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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 "bta_ag_int.h"
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#include "bta/bta_ag_api.h"
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#include "bta/bta_sys.h"
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#include "bta/bta_ag_api.h"
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#include "bta/utl.h"
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#include "stack/sdp_api.h"
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#include "stack/btm_api.h"
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#include "common/bt_trace.h"
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#include "osi/allocator.h"
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#if (BTA_AG_INCLUDED == TRUE)
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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 (4096+16)
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#endif
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/* declare sdp callback functions */
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void bta_ag_sdp_cback_1(UINT16 status);
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void bta_ag_sdp_cback_2(UINT16 status);
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void bta_ag_sdp_cback_3(UINT16 status);
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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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{
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bta_ag_sdp_cback_1,
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bta_ag_sdp_cback_2,
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bta_ag_sdp_cback_3
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};
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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 status, UINT8 idx)
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{
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tBTA_AG_DISC_RESULT *p_buf;
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UINT16 event;
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tBTA_AG_SCB *p_scb;
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APPL_TRACE_DEBUG("bta_ag_sdp_cback status:0x%x", status);
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if ((p_scb = bta_ag_scb_by_idx(idx)) != NULL) {
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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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if ((p_buf = (tBTA_AG_DISC_RESULT *) osi_malloc(sizeof(tBTA_AG_DISC_RESULT))) != NULL) {
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p_buf->hdr.event = event;
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p_buf->hdr.layer_specific = idx;
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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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/*******************************************************************************
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**
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** Function bta_ag_sdp_cback_1 to 3
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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(UINT16 status) {bta_ag_sdp_cback(status, 1);}
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void bta_ag_sdp_cback_2(UINT16 status) {bta_ag_sdp_cback(status, 2);}
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void bta_ag_sdp_cback_3(UINT16 status) {bta_ag_sdp_cback(status, 3);}
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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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BOOLEAN bta_ag_add_record(UINT16 service_uuid, char *p_service_name, UINT8 scn,
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tBTA_AG_FEAT features, UINT32 sdp_handle)
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{
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tSDP_PROTOCOL_ELEM proto_elem_list[BTA_AG_NUM_PROTO_ELEMS];
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UINT16 svc_class_id_list[BTA_AG_NUM_SVC_ELEMS];
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UINT16 browse_list[] = {UUID_SERVCLASS_PUBLIC_BROWSE_GROUP};
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UINT16 version;
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UINT16 profile_uuid;
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UINT8 network;
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BOOLEAN result = TRUE;
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BOOLEAN codec_supported = FALSE;
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UINT8 buf[2];
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APPL_TRACE_DEBUG("bta_ag_add_record uuid: %x", service_uuid);
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memset( proto_elem_list, 0 , BTA_AG_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_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, 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 = HFP_VERSION_1_6;
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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 != NULL && p_service_name[0] != 0) {
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result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SERVICE_NAME, TEXT_STR_DESC_TYPE,
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(UINT32)(strlen(p_service_name)+1), (UINT8 *) 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) {
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codec_supported = TRUE;
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}
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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) {
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features |= 0x0020;
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}
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UINT16_TO_BE_FIELD(buf, features);
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result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SUPPORTED_FEATURES, 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, 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, tBTA_AG_DATA *p_data)
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{
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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 (int 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], p_data->api_register.p_name[i],
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bta_ag_cb.profile[i].scn, p_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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p_scb->hsp_version = HSP_VERSION_1_2;
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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, tBTA_AG_DATA *p_data)
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{
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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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UNUSED(p_data);
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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 == FALSE) {
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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; i++, services >>= 1, others >>= 1)
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{
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/* if service registered for this scb and not registered for any other scb */
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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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BTM_SecClrService(bta_ag_sec_id[i]);
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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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BOOLEAN bta_ag_sdp_find_attr(tBTA_AG_SCB *p_scb, tBTA_SERVICE_MASK service)
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{
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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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UINT16 uuid;
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BOOLEAN 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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p_scb->peer_version = HFP_VERSION_1_1; /* Default version */
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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 = 0x0100; /* Default version */
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} else {
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return result;
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}
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/* loop through all records we found */
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while (TRUE)
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{
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/* get next record; if none found, we're done */
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if ((p_rec = SDP_FindServiceInDb(p_scb->p_disc_db, uuid, p_rec)) == NULL) {
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if (uuid == UUID_SERVCLASS_HEADSET_HS) {
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/* Search again in case the peer device is HSP v1.0 */
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uuid = UUID_SERVCLASS_HEADSET;
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if ((p_rec = SDP_FindServiceInDb(p_scb->p_disc_db, uuid, p_rec)) == NULL) {
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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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}
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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) 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, &p_scb->peer_version);
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/* get features if HFP */
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if (service & BTA_HFP_SERVICE_MASK) {
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if ((p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_SUPPORTED_FEATURES)) != 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 (p_scb->peer_features == 0)
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p_scb->peer_features = p_attr->attr_value.v.u16;
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}
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} else {
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/* HSP */
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if ((p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_REMOTE_AUDIO_VOLUME_CONTROL)) != NULL) {
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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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}
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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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{
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tSDP_UUID uuid_list[2];
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UINT16 num_uuid = 1;
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UINT16 attr_list[4];
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UINT8 num_attr;
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BOOLEAN db_inited = FALSE;
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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].uu.uuid16 = UUID_SERVCLASS_HF_HANDSFREE;
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} else if (service & BTA_HFP_SERVICE_MASK && p_scb->role == BTA_AG_ACP) {
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/* HFP acceptor; get features */
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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_HF_HANDSFREE;
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} else if (service & BTA_HSP_SERVICE_MASK && p_scb->role == BTA_AG_INT) {
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/* HSP initiator; get proto list */
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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_REMOTE_AUDIO_VOLUME_CONTROL;
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num_attr = 4;
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uuid_list[0].uu.uuid16 = UUID_SERVCLASS_HEADSET; /* Legacy from HSP v1.0 */
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if (p_scb->hsp_version >= HSP_VERSION_1_2) {
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uuid_list[1].uu.uuid16 = UUID_SERVCLASS_HEADSET_HS;
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num_uuid = 2;
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}
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} else {
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/* HSP acceptor; no discovery */
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return;
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}
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/* allocate buffer for sdp database */
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p_scb->p_disc_db = (tSDP_DISCOVERY_DB *) osi_malloc(BTA_AG_DISC_BUF_SIZE);
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if(p_scb->p_disc_db) {
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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(p_scb->p_disc_db, BTA_AG_DISC_BUF_SIZE, num_uuid,
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uuid_list, num_attr, attr_list);
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}
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if(db_inited) {
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/*Service discovery not initiated */
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db_inited = SDP_ServiceSearchAttributeRequest(p_scb->peer_addr, p_scb->p_disc_db,
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bta_ag_sdp_cback_tbl[bta_ag_scb_to_idx(p_scb) - 1]);
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}
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if(!db_inited) {
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/*free discover db */
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bta_ag_free_db(p_scb, NULL);
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/* sent failed event */
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bta_ag_sm_execute(p_scb, BTA_AG_DISC_FAIL_EVT, NULL);
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}
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}
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/*******************************************************************************
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**
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** Function bta_ag_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_ag_free_db(tBTA_AG_SCB *p_scb, tBTA_AG_DATA *p_data)
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{
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UNUSED(p_data);
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if (p_scb->p_disc_db != NULL) {
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osi_free(p_scb->p_disc_db);
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p_scb->p_disc_db = NULL;
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}
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}
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#endif /* #if (BTA_AG_INCLUDED == TRUE) */ |