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https://github.com/espressif/esp-idf.git
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234 lines
8.8 KiB
C
234 lines
8.8 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2003-2012 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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* Interface to AVRCP optional commands
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*
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******************************************************************************/
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// #include <assert.h>
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#include "common/bt_target.h"
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#include <string.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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/******************************************************************************
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**
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** Function avrc_vendor_msg
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**
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** Description Compose a VENDOR DEPENDENT command according to p_msg
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**
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** Input Parameters:
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** p_msg: Pointer to VENDOR DEPENDENT message structure.
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**
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** Output Parameters:
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** None.
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**
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** Returns pointer to a valid GKI buffer if successful.
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** NULL if p_msg is NULL.
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**
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******************************************************************************/
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static BT_HDR *avrc_vendor_msg(tAVRC_MSG_VENDOR *p_msg)
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{
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BT_HDR *p_cmd;
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UINT8 *p_data;
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assert(p_msg != NULL);
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#if AVRC_METADATA_INCLUDED == TRUE
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assert(AVRC_META_CMD_BUF_SIZE > (AVRC_MIN_CMD_LEN + p_msg->vendor_len));
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if ((p_cmd = (BT_HDR *) osi_malloc(AVRC_META_CMD_BUF_SIZE)) != NULL)
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#else
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assert(AVRC_CMD_BUF_SIZE > (AVRC_MIN_CMD_LEN + p_msg->vendor_len));
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if ((p_cmd = (BT_HDR *) osi_malloc(AVRC_CMD_BUF_SIZE)) != NULL)
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#endif
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{
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p_cmd->offset = AVCT_MSG_OFFSET;
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p_data = (UINT8 *)(p_cmd + 1) + p_cmd->offset;
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*p_data++ = (p_msg->hdr.ctype & AVRC_CTYPE_MASK);
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*p_data++ = (p_msg->hdr.subunit_type << AVRC_SUBTYPE_SHIFT) | p_msg->hdr.subunit_id;
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*p_data++ = AVRC_OP_VENDOR;
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AVRC_CO_ID_TO_BE_STREAM(p_data, p_msg->company_id);
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if (p_msg->vendor_len && p_msg->p_vendor_data) {
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memcpy(p_data, p_msg->p_vendor_data, p_msg->vendor_len);
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}
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p_cmd->len = (UINT16) (p_data + p_msg->vendor_len - (UINT8 *)(p_cmd + 1) - p_cmd->offset);
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p_cmd->layer_specific = AVCT_DATA_CTRL;
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}
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return p_cmd;
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}
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/******************************************************************************
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**
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** Function AVRC_UnitCmd
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**
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** Description Send a UNIT INFO command to the peer device. This
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** function can only be called for controller role connections.
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** Any response message from the peer is passed back through
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** the tAVRC_MSG_CBACK callback function.
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**
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** Input Parameters:
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** handle: Handle of this connection.
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**
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** label: Transaction label.
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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_HANDLE if handle is invalid.
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**
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******************************************************************************/
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UINT16 AVRC_UnitCmd(UINT8 handle, UINT8 label)
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{
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BT_HDR *p_cmd;
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UINT8 *p_data;
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if ((p_cmd = (BT_HDR *) osi_malloc(AVRC_CMD_BUF_SIZE)) != NULL) {
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p_cmd->offset = AVCT_MSG_OFFSET;
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p_data = (UINT8 *)(p_cmd + 1) + p_cmd->offset;
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*p_data++ = AVRC_CMD_STATUS;
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/* unit & id ignore */
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*p_data++ = (AVRC_SUB_UNIT << AVRC_SUBTYPE_SHIFT) | AVRC_SUBID_IGNORE;
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*p_data++ = AVRC_OP_UNIT_INFO;
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memset(p_data, AVRC_CMD_OPRND_PAD, AVRC_UNIT_OPRND_BYTES);
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p_cmd->len = p_data + AVRC_UNIT_OPRND_BYTES - (UINT8 *)(p_cmd + 1) - p_cmd->offset;
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p_cmd->layer_specific = AVCT_DATA_CTRL;
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}
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return AVCT_MsgReq( handle, label, AVCT_CMD, p_cmd);
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}
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/******************************************************************************
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**
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** Function AVRC_SubCmd
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**
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** Description Send a SUBUNIT INFO command to the peer device. This
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** function can only be called for controller role connections.
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** Any response message from the peer is passed back through
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** the tAVRC_MSG_CBACK callback function.
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**
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** Input Parameters:
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** handle: Handle of this connection.
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**
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** label: Transaction label.
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**
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** page: Specifies which part of the subunit type table
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** is requested. For AVRCP it is typically zero.
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** Value range is 0-7.
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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_HANDLE if handle is invalid.
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**
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******************************************************************************/
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UINT16 AVRC_SubCmd(UINT8 handle, UINT8 label, UINT8 page)
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{
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BT_HDR *p_cmd;
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UINT8 *p_data;
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if ((p_cmd = (BT_HDR *) osi_malloc(AVRC_CMD_BUF_SIZE)) != NULL) {
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p_cmd->offset = AVCT_MSG_OFFSET;
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p_data = (UINT8 *)(p_cmd + 1) + p_cmd->offset;
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*p_data++ = AVRC_CMD_STATUS;
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/* unit & id ignore */
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*p_data++ = (AVRC_SUB_UNIT << AVRC_SUBTYPE_SHIFT) | AVRC_SUBID_IGNORE;
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*p_data++ = AVRC_OP_SUB_INFO;
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*p_data++ = ((page & AVRC_SUB_PAGE_MASK) << AVRC_SUB_PAGE_SHIFT) | AVRC_SUB_EXT_CODE;
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memset(p_data, AVRC_CMD_OPRND_PAD, AVRC_SUB_OPRND_BYTES);
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p_cmd->len = p_data + AVRC_SUB_OPRND_BYTES - (UINT8 *)(p_cmd + 1) - p_cmd->offset;
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p_cmd->layer_specific = AVCT_DATA_CTRL;
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}
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return AVCT_MsgReq( handle, label, AVCT_CMD, p_cmd);
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}
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/******************************************************************************
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**
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** Function AVRC_VendorCmd
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**
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** Description Send a VENDOR DEPENDENT command to the peer device. This
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** function can only be called for controller role connections.
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** Any response message from the peer is passed back through
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** the tAVRC_MSG_CBACK callback function.
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**
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** Input Parameters:
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** handle: Handle of this connection.
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**
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** label: Transaction label.
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**
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** p_msg: Pointer to VENDOR DEPENDENT message structure.
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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_HANDLE if handle is invalid.
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**
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******************************************************************************/
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UINT16 AVRC_VendorCmd(UINT8 handle, UINT8 label, tAVRC_MSG_VENDOR *p_msg)
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{
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BT_HDR *p_buf = avrc_vendor_msg(p_msg);
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if (p_buf) {
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return AVCT_MsgReq( handle, label, AVCT_CMD, p_buf);
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} else {
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return AVCT_NO_RESOURCES;
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}
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}
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/******************************************************************************
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**
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** Function AVRC_VendorRsp
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**
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** Description Send a VENDOR DEPENDENT response to the peer device. This
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** function can only be called for target role connections.
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** This function must be called when a VENDOR DEPENDENT
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** command message is received from the peer through the
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** tAVRC_MSG_CBACK callback function.
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**
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** Input Parameters:
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** handle: Handle of this connection.
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**
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** label: Transaction label. Must be the same value as
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** passed with the command message in the callback function.
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**
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** p_msg: Pointer to VENDOR DEPENDENT message structure.
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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_HANDLE if handle is invalid.
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**
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******************************************************************************/
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UINT16 AVRC_VendorRsp(UINT8 handle, UINT8 label, tAVRC_MSG_VENDOR *p_msg)
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{
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BT_HDR *p_buf = avrc_vendor_msg(p_msg);
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if (p_buf) {
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return AVCT_MsgReq( handle, label, AVCT_RSP, p_buf);
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} else {
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return AVCT_NO_RESOURCES;
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}
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}
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#endif /* #if (defined(AVRC_INCLUDED) && AVRC_INCLUDED == TRUE) */
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