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Diffstat (limited to 'bta/ag/bta_ag_sdp.c')
| -rw-r--r-- | bta/ag/bta_ag_sdp.c | 500 |
1 files changed, 500 insertions, 0 deletions
diff --git a/bta/ag/bta_ag_sdp.c b/bta/ag/bta_ag_sdp.c new file mode 100644 index 0000000..d708cf2 --- /dev/null +++ b/bta/ag/bta_ag_sdp.c @@ -0,0 +1,500 @@ +/****************************************************************************** + * + * 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. + * + ******************************************************************************/ + +#include <string.h> +#include "bta_api.h" +#include "bta_sys.h" +#include "bta_ag_api.h" +#include "bta_ag_int.h" +#include "sdp_api.h" +#include "btm_api.h" +#include "gki.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 GKI_MAX_BUF_SIZE +#endif + +/* declare sdp callback functions */ +void bta_ag_sdp_cback_1(UINT16 status); +void bta_ag_sdp_cback_2(UINT16 status); +void bta_ag_sdp_cback_3(UINT16 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 status, UINT8 idx) +{ + tBTA_AG_DISC_RESULT *p_buf; + UINT16 event; + tBTA_AG_SCB *p_scb; + + APPL_TRACE_DEBUG1("bta_ag_sdp_cback status:0x%x", status); + + if ((p_scb = bta_ag_scb_by_idx(idx)) != 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; + } + + if ((p_buf = (tBTA_AG_DISC_RESULT *) GKI_getbuf(sizeof(tBTA_AG_DISC_RESULT))) != NULL) + { + 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 status) {bta_ag_sdp_cback(status, 1);} +void bta_ag_sdp_cback_2(UINT16 status) {bta_ag_sdp_cback(status, 2);} +void bta_ag_sdp_cback_3(UINT16 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. +** +******************************************************************************/ +BOOLEAN bta_ag_add_record(UINT16 service_uuid, char *p_service_name, UINT8 scn, + tBTA_AG_FEAT features, UINT32 sdp_handle) +{ + tSDP_PROTOCOL_ELEM proto_elem_list[BTA_AG_NUM_PROTO_ELEMS]; + UINT16 svc_class_id_list[BTA_AG_NUM_SVC_ELEMS]; + UINT16 browse_list[] = {UUID_SERVCLASS_PUBLIC_BROWSE_GROUP}; + UINT16 version; + UINT16 profile_uuid; + UINT8 network; + BOOLEAN result = TRUE; + BOOLEAN codec_supported = FALSE; + UINT8 buf[2]; + + APPL_TRACE_DEBUG1("bta_ag_add_record uuid: %x", 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 = HFP_VERSION_1_6; + } + 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)(strlen(p_service_name)+1), (UINT8 *) 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, 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_DEBUG1("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. +** +*******************************************************************************/ +BOOLEAN 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 uuid; + BOOLEAN 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 = 0x0100; /* Default version */ + } + else + { + return result; + } + + /* loop through all records we found */ + while (TRUE) + { + /* get next record; if none found, we're done */ + if ((p_rec = SDP_FindServiceInDb(p_scb->p_disc_db, uuid, p_rec)) == NULL) + { + if (uuid == UUID_SERVCLASS_HEADSET_HS) + { + /* Search again in case the peer device is HSP v1.0 */ + uuid = UUID_SERVCLASS_HEADSET; + if ((p_rec = SDP_FindServiceInDb(p_scb->p_disc_db, uuid, 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) pe.params[0]; + } + else + { + continue; + } + } + + /* get profile version (if failure, version parameter is not updated) */ + SDP_FindProfileVersionInRec(p_rec, uuid, &p_scb->peer_version); + + /* get features if HFP */ + if (service & BTA_HFP_SERVICE_MASK) + { + if ((p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_SUPPORTED_FEATURES)) != 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 */ + { + if ((p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_REMOTE_AUDIO_VOLUME_CONTROL)) != NULL) + { + /* Remote volume control of HSP */ + if (p_attr->attr_value.v.u8) + p_scb->peer_features |= BTA_AG_PEER_FEAT_VOL; + else + p_scb->peer_features &= ~BTA_AG_PEER_FEAT_VOL; + } + + } + + /* 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[2]; + UINT16 num_uuid = 1; + UINT16 attr_list[4]; + UINT8 num_attr; + BOOLEAN 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; + + uuid_list[0].uu.uuid16 = UUID_SERVCLASS_HEADSET; /* Legacy from HSP v1.0 */ + if (p_scb->hsp_version >= HSP_VERSION_1_2) + { + uuid_list[1].uu.uuid16 = UUID_SERVCLASS_HEADSET_HS; + num_uuid = 2; + } + } + /* HSP acceptor; no discovery */ + else + { + return; + } + + /* allocate buffer for sdp database */ + p_scb->p_disc_db = (tSDP_DISCOVERY_DB *) GKI_getbuf(BTA_AG_DISC_BUF_SIZE); + + if(p_scb->p_disc_db) + { + /* set up service discovery database; attr happens to be attr_list len */ + uuid_list[0].len = LEN_UUID_16; + uuid_list[1].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, tBTA_AG_DATA *p_data) +{ + if (p_scb->p_disc_db != NULL) + { + GKI_freebuf(p_scb->p_disc_db); + p_scb->p_disc_db = NULL; + } +} |