/****************************************************************************** * * 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. * ******************************************************************************/ /****************************************************************************** * * AVRCP SDP related functions * ******************************************************************************/ #include #include "gki.h" #include "avrc_api.h" #include "avrc_int.h" /***************************************************************************** ** Global data *****************************************************************************/ #if AVRC_DYNAMIC_MEMORY == FALSE tAVRC_CB avrc_cb; #endif /* update AVRC_NUM_PROTO_ELEMS if this constant is changed */ const tSDP_PROTOCOL_ELEM avrc_proto_list [] = { {UUID_PROTOCOL_L2CAP, 1, {AVCT_PSM, 0} }, {UUID_PROTOCOL_AVCTP, 1, {AVCT_REV_1_0, 0} } }; /****************************************************************************** ** ** Function avrc_sdp_cback ** ** Description This is the SDP callback function used by A2D_FindService. ** This function will be executed by SDP when the service ** search is completed. If the search is successful, it ** finds the first record in the database that matches the ** UUID of the search. Then retrieves various parameters ** from the record. When it is finished it calls the ** application callback function. ** ** Returns Nothing. ** ******************************************************************************/ static void avrc_sdp_cback(UINT16 status) { AVRC_TRACE_API1("avrc_sdp_cback status: %d", status); /* reset service_uuid, so can start another find service */ avrc_cb.service_uuid = 0; /* return info from sdp record in app callback function */ (*avrc_cb.p_cback) (status); return; } /****************************************************************************** ** ** Function AVRC_FindService ** ** Description This function is called by the application to perform service ** discovery and retrieve AVRCP SDP record information from a ** peer device. Information is returned for the first service ** record found on the server that matches the service UUID. ** The callback function will be executed when service discovery ** is complete. There can only be one outstanding call to ** AVRC_FindService() at a time; the application must wait for ** the callback before it makes another call to the function. ** The application is responsible for allocating memory for the ** discovery database. It is recommended that the size of the ** discovery database be at least 300 bytes. The application ** can deallocate the memory after the callback function has ** executed. ** ** Input Parameters: ** service_uuid: Indicates TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET) ** or CT(UUID_SERVCLASS_AV_REMOTE_CONTROL) ** ** bd_addr: BD address of the peer device. ** ** p_db: SDP discovery database parameters. ** ** p_cback: Pointer to the callback function. ** ** Output Parameters: ** None. ** ** Returns AVRC_SUCCESS if successful. ** AVRC_BAD_PARAMS if discovery database parameters are invalid. ** AVRC_NO_RESOURCES if there are not enough resources to ** perform the service search. ** ******************************************************************************/ UINT16 AVRC_FindService(UINT16 service_uuid, BD_ADDR bd_addr, tAVRC_SDP_DB_PARAMS *p_db, tAVRC_FIND_CBACK *p_cback) { tSDP_UUID uuid_list; BOOLEAN result = TRUE; UINT16 a2d_attr_list[] = {ATTR_ID_SERVICE_CLASS_ID_LIST, /* update AVRC_NUM_ATTR, if changed */ ATTR_ID_PROTOCOL_DESC_LIST, ATTR_ID_BT_PROFILE_DESC_LIST, ATTR_ID_SERVICE_NAME, ATTR_ID_SUPPORTED_FEATURES, ATTR_ID_PROVIDER_NAME}; AVRC_TRACE_API1("AVRC_FindService uuid: %x", service_uuid); if( (service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET && service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL) || p_db == NULL || p_db->p_db == NULL || p_cback == NULL) return AVRC_BAD_PARAM; /* check if it is busy */ if( avrc_cb.service_uuid == UUID_SERVCLASS_AV_REM_CTRL_TARGET || avrc_cb.service_uuid == UUID_SERVCLASS_AV_REMOTE_CONTROL) return AVRC_NO_RESOURCES; /* set up discovery database */ uuid_list.len = LEN_UUID_16; uuid_list.uu.uuid16 = service_uuid; if(p_db->p_attrs == NULL || p_db->num_attr == 0) { p_db->p_attrs = a2d_attr_list; p_db->num_attr = AVRC_NUM_ATTR; } result = SDP_InitDiscoveryDb(p_db->p_db, p_db->db_len, 1, &uuid_list, p_db->num_attr, p_db->p_attrs); if (result == TRUE) { /* store service_uuid and discovery db pointer */ avrc_cb.p_db = p_db->p_db; avrc_cb.service_uuid = service_uuid; avrc_cb.p_cback = p_cback; /* perform service search */ result = SDP_ServiceSearchAttributeRequest(bd_addr, p_db->p_db, avrc_sdp_cback); } return (result ? AVRC_SUCCESS : AVRC_FAIL); } /****************************************************************************** ** ** Function AVRC_AddRecord ** ** Description This function is called to build an AVRCP SDP record. ** Prior to calling this function the application must ** call SDP_CreateRecord() to create an SDP record. ** ** Input Parameters: ** service_uuid: Indicates TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET) ** or CT(UUID_SERVCLASS_AV_REMOTE_CONTROL) ** ** p_service_name: Pointer to a null-terminated character ** string containing the service name. ** If service name is not used set this to NULL. ** ** p_provider_name: Pointer to a null-terminated character ** string containing the provider name. ** If provider name is not used set this to NULL. ** ** categories: Supported categories. ** ** sdp_handle: SDP handle returned by SDP_CreateRecord(). ** ** Output Parameters: ** None. ** ** Returns AVRC_SUCCESS if successful. ** AVRC_NO_RESOURCES if not enough resources to build the SDP record. ** ******************************************************************************/ UINT16 AVRC_AddRecord(UINT16 service_uuid, char *p_service_name, char *p_provider_name, UINT16 categories, UINT32 sdp_handle) { UINT16 browse_list[1]; BOOLEAN result = TRUE; UINT8 temp[8]; UINT8 *p; UINT16 count = 1; UINT16 class_list[2]; AVRC_TRACE_API1("AVRC_AddRecord uuid: %x", service_uuid); if( service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET && service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL ) return AVRC_BAD_PARAM; /* add service class id list */ class_list[0] = service_uuid; result &= SDP_AddServiceClassIdList(sdp_handle, count, class_list); /* add protocol descriptor list */ result &= SDP_AddProtocolList(sdp_handle, AVRC_NUM_PROTO_ELEMS, (tSDP_PROTOCOL_ELEM *)avrc_proto_list); /* add profile descriptor list */ result &= SDP_AddProfileDescriptorList(sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, AVRC_REV_1_0); /* add supported categories */ p = temp; UINT16_TO_BE_STREAM(p, categories); result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SUPPORTED_FEATURES, UINT_DESC_TYPE, (UINT32)2, (UINT8*)temp); /* add provider name */ if (p_provider_name != NULL) { result &= SDP_AddAttribute(sdp_handle, ATTR_ID_PROVIDER_NAME, TEXT_STR_DESC_TYPE, (UINT32)(strlen(p_provider_name)+1), (UINT8 *) p_provider_name); } /* add service name */ if (p_service_name != NULL) { result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SERVICE_NAME, TEXT_STR_DESC_TYPE, (UINT32)(strlen(p_service_name)+1), (UINT8 *) p_service_name); } /* add browse group list */ browse_list[0] = UUID_SERVCLASS_PUBLIC_BROWSE_GROUP; result &= SDP_AddUuidSequence(sdp_handle, ATTR_ID_BROWSE_GROUP_LIST, 1, browse_list); return (result ? AVRC_SUCCESS : AVRC_FAIL); } /****************************************************************************** ** ** Function AVRC_SetTraceLevel ** ** Description Sets the trace level for AVRC. If 0xff is passed, the ** current trace level is returned. ** ** Input Parameters: ** new_level: The level to set the AVRC tracing to: ** 0xff-returns the current setting. ** 0-turns off tracing. ** >= 1-Errors. ** >= 2-Warnings. ** >= 3-APIs. ** >= 4-Events. ** >= 5-Debug. ** ** Returns The new trace level or current trace level if ** the input parameter is 0xff. ** ******************************************************************************/ UINT8 AVRC_SetTraceLevel (UINT8 new_level) { if (new_level != 0xFF) avrc_cb.trace_level = new_level; return (avrc_cb.trace_level); } /******************************************************************************* ** ** Function AVRC_Init ** ** Description This function is called at stack startup to allocate the ** control block (if using dynamic memory), and initializes the ** control block and tracing level. ** ** Returns void ** *******************************************************************************/ void AVRC_Init(void) { memset(&avrc_cb, 0, sizeof(tAVRC_CB)); #if defined(AVRC_INITIAL_TRACE_LEVEL) avrc_cb.trace_level = AVRC_INITIAL_TRACE_LEVEL; #else avrc_cb.trace_level = BT_TRACE_LEVEL_NONE; #endif }