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			386 lines
		
	
	
		
			14 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			386 lines
		
	
	
		
			14 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/******************************************************************************
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 *
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 *  Copyright (C) 2003-2013 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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 *  AVRCP SDP related functions
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 *
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 ******************************************************************************/
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#include <string.h>
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#include "common/bt_target.h"
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#include "stack/avrc_api.h"
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#include "avrc_int.h"
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#include "osi/allocator.h"
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#if (defined(AVRC_INCLUDED) && AVRC_INCLUDED == TRUE)
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#ifndef SDP_AVRCP_1_4
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#define SDP_AVRCP_1_4      TRUE
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#endif
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#ifndef SDP_AVCTP_1_4
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#define SDP_AVCTP_1_4      TRUE
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#endif
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/*****************************************************************************
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**  Global data
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*****************************************************************************/
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#if AVRC_DYNAMIC_MEMORY == FALSE
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tAVRC_CB avrc_cb;
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#else
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tAVRC_CB *avrc_cb_ptr;
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#endif
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/* update AVRC_NUM_PROTO_ELEMS if this constant is changed */
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const tSDP_PROTOCOL_ELEM  avrc_proto_list [] = {
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    {UUID_PROTOCOL_L2CAP, 1, {AVCT_PSM, 0} },
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#if SDP_AVCTP_1_4 == TRUE
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    {UUID_PROTOCOL_AVCTP, 1, {AVCT_REV_1_4, 0}  }
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#else
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#if SDP_AVRCP_1_4 == TRUE
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    {UUID_PROTOCOL_AVCTP, 1, {AVCT_REV_1_3, 0}  }
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#else
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#if AVRC_METADATA_INCLUDED == TRUE
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    {UUID_PROTOCOL_AVCTP, 1, {AVCT_REV_1_2, 0}  }
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#else
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    {UUID_PROTOCOL_AVCTP, 1, {AVCT_REV_1_0, 0}  }
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#endif
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#endif
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#endif
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};
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#if SDP_AVRCP_1_4 == TRUE
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const tSDP_PROTO_LIST_ELEM  avrc_add_proto_list [] = {
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    {
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        AVRC_NUM_PROTO_ELEMS,
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        {
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            {UUID_PROTOCOL_L2CAP, 1, {AVCT_BR_PSM, 0} },
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            {UUID_PROTOCOL_AVCTP, 1, {AVCT_REV_1_3, 0}  }
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        }
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    }
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};
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#endif
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/******************************************************************************
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**
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** Function         avrc_sdp_cback
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**
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** Description      This is the SDP callback function used by A2D_FindService.
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**                  This function will be executed by SDP when the service
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**                  search is completed.  If the search is successful, it
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**                  finds the first record in the database that matches the
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**                  UUID of the search.  Then retrieves various parameters
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**                  from the record.  When it is finished it calls the
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**                  application callback function.
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**
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** Returns          Nothing.
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**
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******************************************************************************/
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static void avrc_sdp_cback(UINT16 status)
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{
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    AVRC_TRACE_API("avrc_sdp_cback status: %d", status);
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    /* reset service_uuid, so can start another find service */
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    avrc_cb.service_uuid = 0;
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    /* return info from sdp record in app callback function */
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    (*avrc_cb.p_cback) (status);
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    return;
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}
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/******************************************************************************
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**
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** Function         AVRC_FindService
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**
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** Description      This function is called by the application to perform service
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**                  discovery and retrieve AVRCP SDP record information from a
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**                  peer device.  Information is returned for the first service
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**                  record found on the server that matches the service UUID.
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**                  The callback function will be executed when service discovery
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**                  is complete.  There can only be one outstanding call to
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**                  AVRC_FindService() at a time; the application must wait for
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**                  the callback before it makes another call to the function.
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**                  The application is responsible for allocating memory for the
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**                  discovery database.  It is recommended that the size of the
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**                  discovery database be at least 300 bytes.  The application
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**                  can deallocate the memory after the callback function has
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**                  executed.
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**
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**                  Input Parameters:
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**                      service_uuid: Indicates TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET)
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**                                           or CT(UUID_SERVCLASS_AV_REMOTE_CONTROL)
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**
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**                      bd_addr:  BD address of the peer device.
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**
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**                      p_db:  SDP discovery database parameters.
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**
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**                      p_cback:  Pointer to the callback function.
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**
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**                  Output Parameters:
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**                      None.
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**
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** Returns          AVRC_SUCCESS if successful.
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**                  AVRC_BAD_PARAMS if discovery database parameters are invalid.
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**                  AVRC_NO_RESOURCES if there are not enough resources to
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**                                    perform the service search.
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**
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******************************************************************************/
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UINT16 AVRC_FindService(UINT16 service_uuid, BD_ADDR bd_addr,
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                        tAVRC_SDP_DB_PARAMS *p_db, tAVRC_FIND_CBACK *p_cback)
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{
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    tSDP_UUID   uuid_list;
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    BOOLEAN     result = TRUE;
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    UINT16      a2d_attr_list[] = {ATTR_ID_SERVICE_CLASS_ID_LIST, /* update AVRC_NUM_ATTR, if changed */
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                                   ATTR_ID_PROTOCOL_DESC_LIST,
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                                   ATTR_ID_BT_PROFILE_DESC_LIST,
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                                   ATTR_ID_SERVICE_NAME,
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                                   ATTR_ID_SUPPORTED_FEATURES,
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                                   ATTR_ID_PROVIDER_NAME
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                                  };
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    AVRC_TRACE_API("AVRC_FindService uuid: %x", service_uuid);
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    if ( (service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET && service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL) ||
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            p_db == NULL || p_db->p_db == NULL || p_cback == NULL) {
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        return AVRC_BAD_PARAM;
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    }
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    /* check if it is busy */
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    if ( avrc_cb.service_uuid == UUID_SERVCLASS_AV_REM_CTRL_TARGET ||
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            avrc_cb.service_uuid == UUID_SERVCLASS_AV_REMOTE_CONTROL) {
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        return AVRC_NO_RESOURCES;
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    }
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    /* set up discovery database */
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    uuid_list.len = LEN_UUID_16;
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    uuid_list.uu.uuid16 = service_uuid;
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    if (p_db->p_attrs == NULL || p_db->num_attr == 0) {
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        p_db->p_attrs  = a2d_attr_list;
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        p_db->num_attr = AVRC_NUM_ATTR;
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    }
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    result = SDP_InitDiscoveryDb(p_db->p_db, p_db->db_len, 1, &uuid_list, p_db->num_attr,
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                                 p_db->p_attrs);
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    if (result == TRUE) {
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        /* store service_uuid and discovery db pointer */
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        avrc_cb.p_db = p_db->p_db;
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        avrc_cb.service_uuid = service_uuid;
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        avrc_cb.p_cback = p_cback;
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        /* perform service search */
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        result = SDP_ServiceSearchAttributeRequest(bd_addr, p_db->p_db, avrc_sdp_cback);
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    }
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    return (result ? AVRC_SUCCESS : AVRC_FAIL);
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}
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/******************************************************************************
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**
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** Function         AVRC_AddRecord
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**
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** Description      This function is called to build an AVRCP SDP record.
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**                  Prior to calling this function the application must
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**                  call SDP_CreateRecord() to create an SDP record.
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**
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**                  Input Parameters:
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**                      service_uuid:  Indicates TG(UUID_SERVCLASS_AV_REM_CTRL_TARGET)
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**                                            or CT(UUID_SERVCLASS_AV_REMOTE_CONTROL)
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**
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**                      p_service_name:  Pointer to a null-terminated character
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**                      string containing the service name.
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**                      If service name is not used set this to NULL.
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**
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**                      p_provider_name:  Pointer to a null-terminated character
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**                      string containing the provider name.
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**                      If provider name is not used set this to NULL.
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**
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**                      categories:  Supported categories.
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**
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**                      sdp_handle:  SDP handle returned by SDP_CreateRecord().
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**
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**                  Output Parameters:
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**                      None.
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**
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** Returns          AVRC_SUCCESS if successful.
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**                  AVRC_NO_RESOURCES if not enough resources to build the SDP record.
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**
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******************************************************************************/
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UINT16 AVRC_AddRecord(UINT16 service_uuid, char *p_service_name,
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                      char *p_provider_name, UINT16 categories, UINT32 sdp_handle)
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{
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    UINT16      browse_list[1];
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    BOOLEAN     result = TRUE;
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    UINT8       temp[8];
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    UINT8       *p;
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    UINT16      count = 1;
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    UINT16      class_list[2];
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    AVRC_TRACE_API("AVRC_AddRecord uuid: %x", service_uuid);
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    if ( service_uuid != UUID_SERVCLASS_AV_REM_CTRL_TARGET && service_uuid != UUID_SERVCLASS_AV_REMOTE_CONTROL ) {
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        return AVRC_BAD_PARAM;
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    }
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    /* add service class id list */
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    class_list[0] = service_uuid;
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#if SDP_AVCTP_1_4 == TRUE
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    if ( service_uuid == UUID_SERVCLASS_AV_REMOTE_CONTROL ) {
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        class_list[1] = UUID_SERVCLASS_AV_REM_CTRL_CONTROL;
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        count = 2;
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    }
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#else
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#if SDP_AVRCP_1_4 == TRUE
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    if ( service_uuid == UUID_SERVCLASS_AV_REMOTE_CONTROL ) {
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        class_list[1] = UUID_SERVCLASS_AV_REM_CTRL_CONTROL;
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        count = 2;
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    }
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#endif
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#endif
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    result &= SDP_AddServiceClassIdList(sdp_handle, count, class_list);
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    /* add protocol descriptor list   */
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    result &= SDP_AddProtocolList(sdp_handle, AVRC_NUM_PROTO_ELEMS, (tSDP_PROTOCOL_ELEM *)avrc_proto_list);
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    /* add profile descriptor list   */
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#if SDP_AVRCP_1_4 == TRUE
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    /* additional protocol list to include browsing channel */
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    result &= SDP_AddAdditionProtoLists( sdp_handle, 1, (tSDP_PROTO_LIST_ELEM *)avrc_add_proto_list);
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    result &= SDP_AddProfileDescriptorList(sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, AVRC_REV_1_4);
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#else
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#if AVRC_METADATA_INCLUDED == TRUE
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    result &= SDP_AddProfileDescriptorList(sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, AVRC_REV_1_3);
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#else
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    result &= SDP_AddProfileDescriptorList(sdp_handle, UUID_SERVCLASS_AV_REMOTE_CONTROL, AVRC_REV_1_0);
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#endif
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#endif
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    /* add supported categories */
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    p = temp;
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    UINT16_TO_BE_STREAM(p, categories);
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    result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SUPPORTED_FEATURES, UINT_DESC_TYPE,
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                               (UINT32)2, (UINT8 *)temp);
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    /* add provider name */
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    if (p_provider_name != NULL) {
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        result &= SDP_AddAttribute(sdp_handle, ATTR_ID_PROVIDER_NAME, TEXT_STR_DESC_TYPE,
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                                   (UINT32)(strlen(p_provider_name) + 1), (UINT8 *) p_provider_name);
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    }
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    /* add service name */
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    if (p_service_name != NULL) {
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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 browse group list */
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    browse_list[0] = UUID_SERVCLASS_PUBLIC_BROWSE_GROUP;
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    result &= SDP_AddUuidSequence(sdp_handle, ATTR_ID_BROWSE_GROUP_LIST, 1, browse_list);
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    return (result ? AVRC_SUCCESS : AVRC_FAIL);
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}
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/******************************************************************************
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**
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** Function         AVRC_SetTraceLevel
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**
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** Description      Sets the trace level for AVRC. If 0xff is passed, the
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**                  current trace level is returned.
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**
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**                  Input Parameters:
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**                      new_level:  The level to set the AVRC tracing to:
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**                      0xff-returns the current setting.
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**                      0-turns off tracing.
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**                      >= 1-Errors.
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**                      >= 2-Warnings.
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**                      >= 3-APIs.
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**                      >= 4-Events.
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**                      >= 5-Debug.
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**
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** Returns          The new trace level or current trace level if
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**                  the input parameter is 0xff.
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**
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******************************************************************************/
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UINT8 AVRC_SetTraceLevel (UINT8 new_level)
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{
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    if (new_level != 0xFF) {
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        avrc_cb.trace_level = new_level;
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    }
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    return (avrc_cb.trace_level);
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}
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/*******************************************************************************
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**
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** Function         AVRC_Init
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**
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** Description      This function is called at stack startup to allocate the
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**                  control block (if using dynamic memory), and initializes the
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**                  control block and tracing level.
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**
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** Returns          status
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**
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*******************************************************************************/
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bt_status_t AVRC_Init(void)
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{
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#if AVRC_DYNAMIC_MEMORY
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    avrc_cb_ptr = (tAVRC_CB *)osi_malloc(sizeof(tAVRC_CB));
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    if (!avrc_cb_ptr) {
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        return BT_STATUS_NOMEM;
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    }
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#endif /* #if AVRC_DYNAMIC_MEMORY */
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    memset(&avrc_cb, 0, sizeof(tAVRC_CB));
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#if defined(AVRC_INITIAL_TRACE_LEVEL)
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    avrc_cb.trace_level  = AVRC_INITIAL_TRACE_LEVEL;
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#else
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    avrc_cb.trace_level  = BT_TRACE_LEVEL_NONE;
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#endif
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    return BT_STATUS_SUCCESS;
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}
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/*******************************************************************************
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**
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** Function         AVRC_Deinit
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**
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** Description      This function is called at stack shotdown to free the
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**                  control block (if using dynamic memory), and deinitializes the
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**                  control block and tracing level.
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**
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** Returns          void
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**
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*******************************************************************************/
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void AVRC_Deinit(void)
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{
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#if AVRC_DYNAMIC_MEMORY
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    if (avrc_cb_ptr){
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        osi_free(avrc_cb_ptr);
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        avrc_cb_ptr = NULL;
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    }
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#endif /* #if AVRC_DYNAMIC_MEMORY */
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}
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#endif /* #if (defined(AVRC_INCLUDED) && AVRC_INCLUDED == TRUE) */
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