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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.
*
******************************************************************************/
/******************************************************************************
*
* Interface to AVRCP optional commands
*
******************************************************************************/
#include <assert.h>
#include "common/bt_target.h"
#include <string.h>
#include "stack/avrc_api.h"
#include "avrc_int.h"
#include "osi/allocator.h"
#if (defined(AVRC_INCLUDED) && AVRC_INCLUDED == TRUE)
/******************************************************************************
**
** Function avrc_vendor_msg
**
** Description Compose a VENDOR DEPENDENT command according to p_msg
**
** Input Parameters:
** p_msg: Pointer to VENDOR DEPENDENT message structure.
**
** Output Parameters:
** None.
**
** Returns pointer to a valid GKI buffer if successful.
** NULL if p_msg is NULL.
**
******************************************************************************/
static BT_HDR *avrc_vendor_msg(tAVRC_MSG_VENDOR *p_msg)
{
BT_HDR *p_cmd;
UINT8 *p_data;
assert(p_msg != NULL);
#if AVRC_METADATA_INCLUDED == TRUE
assert(AVRC_META_CMD_BUF_SIZE > (AVRC_MIN_CMD_LEN + p_msg->vendor_len));
if ((p_cmd = (BT_HDR *) osi_malloc(AVRC_META_CMD_BUF_SIZE)) != NULL)
#else
assert(AVRC_CMD_BUF_SIZE > (AVRC_MIN_CMD_LEN + p_msg->vendor_len));
if ((p_cmd = (BT_HDR *) osi_malloc(AVRC_CMD_BUF_SIZE)) != NULL)
#endif
{
p_cmd->offset = AVCT_MSG_OFFSET;
p_data = (UINT8 *)(p_cmd + 1) + p_cmd->offset;
*p_data++ = (p_msg->hdr.ctype & AVRC_CTYPE_MASK);
*p_data++ = (p_msg->hdr.subunit_type << AVRC_SUBTYPE_SHIFT) | p_msg->hdr.subunit_id;
*p_data++ = AVRC_OP_VENDOR;
AVRC_CO_ID_TO_BE_STREAM(p_data, p_msg->company_id);
if (p_msg->vendor_len && p_msg->p_vendor_data) {
memcpy(p_data, p_msg->p_vendor_data, p_msg->vendor_len);
}
p_cmd->len = (UINT16) (p_data + p_msg->vendor_len - (UINT8 *)(p_cmd + 1) - p_cmd->offset);
p_cmd->layer_specific = AVCT_DATA_CTRL;
}
return p_cmd;
}
/******************************************************************************
**
** Function AVRC_UnitCmd
**
** Description Send a UNIT INFO command to the peer device. This
** function can only be called for controller role connections.
** Any response message from the peer is passed back through
** the tAVRC_MSG_CBACK callback function.
**
** Input Parameters:
** handle: Handle of this connection.
**
** label: Transaction label.
**
** Output Parameters:
** None.
**
** Returns AVRC_SUCCESS if successful.
** AVRC_BAD_HANDLE if handle is invalid.
**
******************************************************************************/
UINT16 AVRC_UnitCmd(UINT8 handle, UINT8 label)
{
BT_HDR *p_cmd;
UINT8 *p_data;
if ((p_cmd = (BT_HDR *) osi_malloc(AVRC_CMD_BUF_SIZE)) != NULL) {
p_cmd->offset = AVCT_MSG_OFFSET;
p_data = (UINT8 *)(p_cmd + 1) + p_cmd->offset;
*p_data++ = AVRC_CMD_STATUS;
/* unit & id ignore */
*p_data++ = (AVRC_SUB_UNIT << AVRC_SUBTYPE_SHIFT) | AVRC_SUBID_IGNORE;
*p_data++ = AVRC_OP_UNIT_INFO;
memset(p_data, AVRC_CMD_OPRND_PAD, AVRC_UNIT_OPRND_BYTES);
p_cmd->len = p_data + AVRC_UNIT_OPRND_BYTES - (UINT8 *)(p_cmd + 1) - p_cmd->offset;
p_cmd->layer_specific = AVCT_DATA_CTRL;
}
return AVCT_MsgReq( handle, label, AVCT_CMD, p_cmd);
}
/******************************************************************************
**
** Function AVRC_SubCmd
**
** Description Send a SUBUNIT INFO command to the peer device. This
** function can only be called for controller role connections.
** Any response message from the peer is passed back through
** the tAVRC_MSG_CBACK callback function.
**
** Input Parameters:
** handle: Handle of this connection.
**
** label: Transaction label.
**
** page: Specifies which part of the subunit type table
** is requested. For AVRCP it is typically zero.
** Value range is 0-7.
**
** Output Parameters:
** None.
**
** Returns AVRC_SUCCESS if successful.
** AVRC_BAD_HANDLE if handle is invalid.
**
******************************************************************************/
UINT16 AVRC_SubCmd(UINT8 handle, UINT8 label, UINT8 page)
{
BT_HDR *p_cmd;
UINT8 *p_data;
if ((p_cmd = (BT_HDR *) osi_malloc(AVRC_CMD_BUF_SIZE)) != NULL) {
p_cmd->offset = AVCT_MSG_OFFSET;
p_data = (UINT8 *)(p_cmd + 1) + p_cmd->offset;
*p_data++ = AVRC_CMD_STATUS;
/* unit & id ignore */
*p_data++ = (AVRC_SUB_UNIT << AVRC_SUBTYPE_SHIFT) | AVRC_SUBID_IGNORE;
*p_data++ = AVRC_OP_SUB_INFO;
*p_data++ = ((page & AVRC_SUB_PAGE_MASK) << AVRC_SUB_PAGE_SHIFT) | AVRC_SUB_EXT_CODE;
memset(p_data, AVRC_CMD_OPRND_PAD, AVRC_SUB_OPRND_BYTES);
p_cmd->len = p_data + AVRC_SUB_OPRND_BYTES - (UINT8 *)(p_cmd + 1) - p_cmd->offset;
p_cmd->layer_specific = AVCT_DATA_CTRL;
}
return AVCT_MsgReq( handle, label, AVCT_CMD, p_cmd);
}
/******************************************************************************
**
** Function AVRC_VendorCmd
**
** Description Send a VENDOR DEPENDENT command to the peer device. This
** function can only be called for controller role connections.
** Any response message from the peer is passed back through
** the tAVRC_MSG_CBACK callback function.
**
** Input Parameters:
** handle: Handle of this connection.
**
** label: Transaction label.
**
** p_msg: Pointer to VENDOR DEPENDENT message structure.
**
** Output Parameters:
** None.
**
** Returns AVRC_SUCCESS if successful.
** AVRC_BAD_HANDLE if handle is invalid.
**
******************************************************************************/
UINT16 AVRC_VendorCmd(UINT8 handle, UINT8 label, tAVRC_MSG_VENDOR *p_msg)
{
BT_HDR *p_buf = avrc_vendor_msg(p_msg);
if (p_buf) {
return AVCT_MsgReq( handle, label, AVCT_CMD, p_buf);
} else {
return AVCT_NO_RESOURCES;
}
}
/******************************************************************************
**
** Function AVRC_VendorRsp
**
** Description Send a VENDOR DEPENDENT response to the peer device. This
** function can only be called for target role connections.
** This function must be called when a VENDOR DEPENDENT
** command message is received from the peer through the
** tAVRC_MSG_CBACK callback function.
**
** Input Parameters:
** handle: Handle of this connection.
**
** label: Transaction label. Must be the same value as
** passed with the command message in the callback function.
**
** p_msg: Pointer to VENDOR DEPENDENT message structure.
**
** Output Parameters:
** None.
**
** Returns AVRC_SUCCESS if successful.
** AVRC_BAD_HANDLE if handle is invalid.
**
******************************************************************************/
UINT16 AVRC_VendorRsp(UINT8 handle, UINT8 label, tAVRC_MSG_VENDOR *p_msg)
{
BT_HDR *p_buf = avrc_vendor_msg(p_msg);
if (p_buf) {
return AVCT_MsgReq( handle, label, AVCT_RSP, p_buf);
} else {
return AVCT_NO_RESOURCES;
}
}
#endif /* #if (defined(AVRC_INCLUDED) && AVRC_INCLUDED == TRUE) */
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