| /****************************************************************************** |
| * |
| * 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 "bt_common.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); |
| |
| 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; |
| } |
| |
| 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 = 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_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, 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; |
| UNUSED(p_data); |
| |
| /* 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 = 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_t) 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_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; |
| |
| 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 *)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; |
| 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) |
| { |
| UNUSED(p_data); |
| osi_free_and_reset((void **)&p_scb->p_disc_db); |
| } |