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PL286/system/bt/bta/ag/bta_ag_sdp.cc

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/******************************************************************************
*
* Copyright (C) 2003-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* This file contains the audio gateway functions performing SDP
* operations.
*
******************************************************************************/
/** M: New Feature for setting volume support to property. @{ */
#include <cutils/properties.h>
/** @ } */
#include <string.h>
#include "bt_common.h"
#include "bta_ag_api.h"
#include "bta_ag_int.h"
#include "bta_api.h"
#include "bta_sys.h"
#include "btm_api.h"
#include "osi/include/osi.h"
#include "sdp_api.h"
#include "utl.h"
/* Number of protocol elements in protocol element list. */
#define BTA_AG_NUM_PROTO_ELEMS 2
/* Number of elements in service class id list. */
#define BTA_AG_NUM_SVC_ELEMS 2
/* size of database for service discovery */
#ifndef BTA_AG_DISC_BUF_SIZE
#define BTA_AG_DISC_BUF_SIZE BT_DEFAULT_BUFFER_SIZE
#endif
/* declare sdp callback functions */
void bta_ag_sdp_cback_1(uint16_t status);
void bta_ag_sdp_cback_2(uint16_t status);
void bta_ag_sdp_cback_3(uint16_t status);
/* SDP callback function table */
typedef tSDP_DISC_CMPL_CB* tBTA_AG_SDP_CBACK;
const tBTA_AG_SDP_CBACK bta_ag_sdp_cback_tbl[] = {
bta_ag_sdp_cback_1, bta_ag_sdp_cback_2, bta_ag_sdp_cback_3};
/*******************************************************************************
*
* Function bta_ag_sdp_cback
*
* Description SDP callback function.
*
*
* Returns void
*
******************************************************************************/
static void bta_ag_sdp_cback(uint16_t status, uint8_t idx) {
uint16_t event;
tBTA_AG_SCB* p_scb;
APPL_TRACE_DEBUG("%s status:0x%x", __func__, status);
p_scb = bta_ag_scb_by_idx(idx);
if (p_scb != NULL) {
/* set event according to int/acp */
if (p_scb->role == BTA_AG_ACP) {
event = BTA_AG_DISC_ACP_RES_EVT;
} else {
event = BTA_AG_DISC_INT_RES_EVT;
}
tBTA_AG_DISC_RESULT* p_buf =
(tBTA_AG_DISC_RESULT*)osi_malloc(sizeof(tBTA_AG_DISC_RESULT));
p_buf->hdr.event = event;
p_buf->hdr.layer_specific = idx;
p_buf->status = status;
bta_sys_sendmsg(p_buf);
}
}
/*******************************************************************************
*
* Function bta_ag_sdp_cback_1 to 3
*
* Description SDP callback functions. Since there is no way to
* distinguish scb from the callback we need separate
* callbacks for each scb.
*
*
* Returns void
*
******************************************************************************/
void bta_ag_sdp_cback_1(uint16_t status) { bta_ag_sdp_cback(status, 1); }
void bta_ag_sdp_cback_2(uint16_t status) { bta_ag_sdp_cback(status, 2); }
void bta_ag_sdp_cback_3(uint16_t status) { bta_ag_sdp_cback(status, 3); }
/******************************************************************************
*
* Function bta_ag_add_record
*
* Description This function is called by a server application to add
* HSP or HFP information to an SDP record. Prior to
* calling this function the application must call
* SDP_CreateRecord() to create an SDP record.
*
* Returns true if function execution succeeded,
* false if function execution failed.
*
*****************************************************************************/
bool bta_ag_add_record(uint16_t service_uuid, char* p_service_name, uint8_t scn,
tBTA_AG_FEAT features, uint32_t sdp_handle) {
tSDP_PROTOCOL_ELEM proto_elem_list[BTA_AG_NUM_PROTO_ELEMS];
uint16_t svc_class_id_list[BTA_AG_NUM_SVC_ELEMS];
uint16_t browse_list[] = {UUID_SERVCLASS_PUBLIC_BROWSE_GROUP};
uint16_t version;
uint16_t profile_uuid;
uint8_t network;
bool result = true;
bool codec_supported = false;
uint8_t buf[2];
APPL_TRACE_DEBUG("%s uuid: %x", __func__, service_uuid);
memset(proto_elem_list, 0,
BTA_AG_NUM_PROTO_ELEMS * sizeof(tSDP_PROTOCOL_ELEM));
/* add the protocol element sequence */
proto_elem_list[0].protocol_uuid = UUID_PROTOCOL_L2CAP;
proto_elem_list[0].num_params = 0;
proto_elem_list[1].protocol_uuid = UUID_PROTOCOL_RFCOMM;
proto_elem_list[1].num_params = 1;
proto_elem_list[1].params[0] = scn;
result &=
SDP_AddProtocolList(sdp_handle, BTA_AG_NUM_PROTO_ELEMS, proto_elem_list);
/* add service class id list */
svc_class_id_list[0] = service_uuid;
svc_class_id_list[1] = UUID_SERVCLASS_GENERIC_AUDIO;
result &= SDP_AddServiceClassIdList(sdp_handle, BTA_AG_NUM_SVC_ELEMS,
svc_class_id_list);
/* add profile descriptor list */
if (service_uuid == UUID_SERVCLASS_AG_HANDSFREE) {
profile_uuid = UUID_SERVCLASS_HF_HANDSFREE;
version = BTA_HFP_VERSION;
} else {
profile_uuid = UUID_SERVCLASS_HEADSET;
version = HSP_VERSION_1_2;
}
result &= SDP_AddProfileDescriptorList(sdp_handle, profile_uuid, version);
/* add service name */
if (p_service_name != NULL && p_service_name[0] != 0) {
result &= SDP_AddAttribute(
sdp_handle, ATTR_ID_SERVICE_NAME, TEXT_STR_DESC_TYPE,
(uint32_t)(strlen(p_service_name) + 1), (uint8_t*)p_service_name);
}
/* add features and network */
if (service_uuid == UUID_SERVCLASS_AG_HANDSFREE) {
network = (features & BTA_AG_FEAT_REJECT) ? 1 : 0;
result &= SDP_AddAttribute(sdp_handle, ATTR_ID_DATA_STORES_OR_NETWORK,
UINT_DESC_TYPE, 1, &network);
if (features & BTA_AG_FEAT_CODEC) codec_supported = true;
features &= BTA_AG_SDP_FEAT_SPEC;
/* Codec bit position is different in SDP and in BRSF */
if (codec_supported) features |= 0x0020;
UINT16_TO_BE_FIELD(buf, features);
result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SUPPORTED_FEATURES,
UINT_DESC_TYPE, 2, buf);
}
/* add browse group list */
result &= SDP_AddUuidSequence(sdp_handle, ATTR_ID_BROWSE_GROUP_LIST, 1,
browse_list);
return result;
}
/*******************************************************************************
*
* Function bta_ag_create_records
*
* Description Create SDP records for registered services.
*
*
* Returns void
*
******************************************************************************/
void bta_ag_create_records(tBTA_AG_SCB* p_scb, tBTA_AG_DATA* p_data) {
int i;
tBTA_SERVICE_MASK services;
services = p_scb->reg_services >> BTA_HSP_SERVICE_ID;
for (i = 0; i < BTA_AG_NUM_IDX && services != 0; i++, services >>= 1) {
/* if service is set in mask */
if (services & 1) {
/* add sdp record if not already registered */
if (bta_ag_cb.profile[i].sdp_handle == 0) {
bta_ag_cb.profile[i].sdp_handle = SDP_CreateRecord();
bta_ag_cb.profile[i].scn = BTM_AllocateSCN();
bta_ag_add_record(bta_ag_uuid[i], p_data->api_register.p_name[i],
bta_ag_cb.profile[i].scn,
p_data->api_register.features,
bta_ag_cb.profile[i].sdp_handle);
bta_sys_add_uuid(bta_ag_uuid[i]);
}
}
}
p_scb->hsp_version = HSP_VERSION_1_2;
}
/*******************************************************************************
*
* Function bta_ag_del_records
*
* Description Delete SDP records for any registered services.
*
*
* Returns void
*
******************************************************************************/
void bta_ag_del_records(tBTA_AG_SCB* p_scb, UNUSED_ATTR tBTA_AG_DATA* p_data) {
tBTA_AG_SCB* p = &bta_ag_cb.scb[0];
tBTA_SERVICE_MASK services;
tBTA_SERVICE_MASK others = 0;
int i;
/* get services of all other registered servers */
for (i = 0; i < BTA_AG_NUM_IDX; i++, p++) {
if (p_scb == p) {
continue;
}
if (p->in_use && p->dealloc == false) {
others |= p->reg_services;
}
}
others >>= BTA_HSP_SERVICE_ID;
services = p_scb->reg_services >> BTA_HSP_SERVICE_ID;
for (i = 0; i < BTA_AG_NUM_IDX && services != 0;
i++, services >>= 1, others >>= 1) {
/* if service registered for this scb and not registered for any other scb
*/
if (((services & 1) == 1) && ((others & 1) == 0)) {
APPL_TRACE_DEBUG("bta_ag_del_records %d", i);
if (bta_ag_cb.profile[i].sdp_handle != 0) {
SDP_DeleteRecord(bta_ag_cb.profile[i].sdp_handle);
bta_ag_cb.profile[i].sdp_handle = 0;
}
BTM_FreeSCN(bta_ag_cb.profile[i].scn);
BTM_SecClrService(bta_ag_sec_id[i]);
bta_sys_remove_uuid(bta_ag_uuid[i]);
}
}
}
/*******************************************************************************
*
* Function bta_ag_sdp_find_attr
*
* Description Process SDP discovery results to find requested attributes
* for requested service.
*
*
* Returns true if results found, false otherwise.
*
******************************************************************************/
bool bta_ag_sdp_find_attr(tBTA_AG_SCB* p_scb, tBTA_SERVICE_MASK service) {
tSDP_DISC_REC* p_rec = NULL;
tSDP_DISC_ATTR* p_attr;
tSDP_PROTOCOL_ELEM pe;
uint16_t uuid;
bool result = false;
if (service & BTA_HFP_SERVICE_MASK) {
uuid = UUID_SERVCLASS_HF_HANDSFREE;
p_scb->peer_version = HFP_VERSION_1_1; /* Default version */
} else if (service & BTA_HSP_SERVICE_MASK && p_scb->role == BTA_AG_INT) {
uuid = UUID_SERVCLASS_HEADSET_HS;
p_scb->peer_version = HSP_VERSION_1_2; /* Default version */
} else {
return result;
}
/* loop through all records we found */
while (true) {
/* get next record; if none found, we're done */
p_rec = SDP_FindServiceInDb(p_scb->p_disc_db, uuid, p_rec);
if (p_rec == NULL) {
if (uuid == UUID_SERVCLASS_HEADSET_HS) {
/* Search again in case the peer device uses the old HSP UUID */
uuid = UUID_SERVCLASS_HEADSET;
p_scb->peer_version = HSP_VERSION_1_0;
p_rec = SDP_FindServiceInDb(p_scb->p_disc_db, uuid, p_rec);
if (p_rec == NULL) {
break;
}
} else
break;
}
/* get scn from proto desc list if initiator */
if (p_scb->role == BTA_AG_INT) {
if (SDP_FindProtocolListElemInRec(p_rec, UUID_PROTOCOL_RFCOMM, &pe)) {
p_scb->peer_scn = (uint8_t)pe.params[0];
} else {
continue;
}
}
/* get profile version (if failure, version parameter is not updated) */
if (!SDP_FindProfileVersionInRec(p_rec, uuid, &p_scb->peer_version)) {
APPL_TRACE_WARNING("%s: Get peer_version failed, using default 0x%04x",
__func__, p_scb->peer_version);
}
/* get features if HFP */
if (service & BTA_HFP_SERVICE_MASK) {
p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_SUPPORTED_FEATURES);
if (p_attr != NULL) {
/* Found attribute. Get value. */
/* There might be race condition between SDP and BRSF. */
/* Do not update if we already received BRSF. */
if (p_scb->peer_features == 0)
p_scb->peer_features = p_attr->attr_value.v.u16;
}
} else /* HSP */
{
p_attr =
SDP_FindAttributeInRec(p_rec, ATTR_ID_REMOTE_AUDIO_VOLUME_CONTROL);
if (p_attr != NULL) {
/* Remote volume control of HSP */
if (p_attr->attr_value.v.u8) {
p_scb->peer_features |= BTA_AG_PEER_FEAT_VOL;
/** M: New Feature for setting volume support to property. @{ */
property_set("persist.service.bdroid.vol", "1");
/** @} */
}
else
{
p_scb->peer_features &= ~BTA_AG_PEER_FEAT_VOL;
/** M: New Feature for setting volume support to property. @{ */
property_set("persist.service.bdroid.vol", "0");
/** @} */
}
}
}
/* found what we needed */
result = true;
break;
}
return result;
}
/*******************************************************************************
*
* Function bta_ag_do_disc
*
* Description Do service discovery.
*
*
* Returns void
*
******************************************************************************/
void bta_ag_do_disc(tBTA_AG_SCB* p_scb, tBTA_SERVICE_MASK service) {
tSDP_UUID uuid_list[1];
uint16_t num_uuid = 1;
uint16_t attr_list[4];
uint8_t num_attr;
bool db_inited = false;
/* HFP initiator; get proto list and features */
if (service & BTA_HFP_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_SUPPORTED_FEATURES;
num_attr = 4;
uuid_list[0].uu.uuid16 = UUID_SERVCLASS_HF_HANDSFREE;
}
/* HFP acceptor; get features */
else if (service & BTA_HFP_SERVICE_MASK && p_scb->role == BTA_AG_ACP) {
attr_list[0] = ATTR_ID_SERVICE_CLASS_ID_LIST;
attr_list[1] = ATTR_ID_BT_PROFILE_DESC_LIST;
attr_list[2] = ATTR_ID_SUPPORTED_FEATURES;
num_attr = 3;
uuid_list[0].uu.uuid16 = 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].uu.uuid16 = UUID_SERVCLASS_HEADSET_HS;
} else {
uuid_list[0].uu.uuid16 = UUID_SERVCLASS_HEADSET;
}
}
/* HSP acceptor; no discovery */
else {
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 */
uuid_list[0].len = LEN_UUID_16;
db_inited = SDP_InitDiscoveryDb(p_scb->p_disc_db, BTA_AG_DISC_BUF_SIZE,
num_uuid, uuid_list, num_attr, attr_list);
if (db_inited) {
/*Service discovery not initiated */
db_inited = SDP_ServiceSearchAttributeRequest(
p_scb->peer_addr, p_scb->p_disc_db,
bta_ag_sdp_cback_tbl[bta_ag_scb_to_idx(p_scb) - 1]);
}
if (!db_inited) {
/*free discover db */
bta_ag_free_db(p_scb, NULL);
/* sent failed event */
bta_ag_sm_execute(p_scb, BTA_AG_DISC_FAIL_EVT, NULL);
}
}
/*******************************************************************************
*
* Function bta_ag_free_db
*
* Description Free discovery database.
*
*
* Returns void
*
******************************************************************************/
void bta_ag_free_db(tBTA_AG_SCB* p_scb, UNUSED_ATTR tBTA_AG_DATA* p_data) {
osi_free_and_reset((void**)&p_scb->p_disc_db);
}