bb7e4f220b
Add support for new graphics redirection protocol (aka VAIL) used by WSLg. This protocol is currently being documented and the official documentation will be posted in the near future.
61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* RDPXXXX Remote App Graphics Redirection Virtual Channel Extension
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*
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* Copyright 2020 Microsoft
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <winpr/crt.h>
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#include <winpr/stream.h>
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#include <freerdp/channels/log.h>
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#define TAG CHANNELS_TAG("gfxredir.common")
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#include "gfxredir_common.h"
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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UINT gfxredir_read_header(wStream* s, GFXREDIR_HEADER* header)
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{
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if (Stream_GetRemainingLength(s) < 8)
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{
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WLog_ERR(TAG, "header parsing failed: not enough data!");
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return ERROR_INVALID_DATA;
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}
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Stream_Read_UINT32(s, header->cmdId);
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Stream_Read_UINT32(s, header->length);
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return CHANNEL_RC_OK;
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}
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/**
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* Function description
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*
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* @return 0 on success, otherwise a Win32 error code
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*/
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UINT gfxredir_write_header(wStream* s, const GFXREDIR_HEADER* header)
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{
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Stream_Write_UINT32(s, header->cmdId);
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Stream_Write_UINT32(s, header->length);
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return CHANNEL_RC_OK;
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}
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