87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* XCrush (RDP6.1) Bulk Data Compression
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*
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* Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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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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#ifndef FREERDP_CODEC_XCRUSH_H
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#define FREERDP_CODEC_XCRUSH_H
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#include <freerdp/api.h>
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#include <freerdp/types.h>
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#include <freerdp/codec/mppc.h>
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struct _XCRUSH_SIGNATURE
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{
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UINT16 seed;
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UINT16 size;
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};
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typedef struct _XCRUSH_SIGNATURE XCRUSH_SIGNATURE;
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struct _RDP61_MATCH_DETAILS
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{
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UINT16 MatchLength;
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UINT16 MatchOutputOffset;
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UINT32 MatchHistoryOffset;
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};
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typedef struct _RDP61_MATCH_DETAILS RDP61_MATCH_DETAILS;
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struct _RDP61_COMPRESSED_DATA
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{
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BYTE Level1ComprFlags;
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BYTE Level2ComprFlags;
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UINT16 MatchCount;
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RDP61_MATCH_DETAILS* MatchDetails;
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BYTE* Literals;
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};
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typedef struct _RDP61_COMPRESSED_DATA RDP61_COMPRESSED_DATA;
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struct _XCRUSH_CONTEXT
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{
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BOOL Compressor;
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MPPC_CONTEXT* mppc;
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BYTE* HistoryPtr;
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UINT32 HistoryOffset;
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UINT32 HistoryBufferSize;
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BYTE HistoryBuffer[2000000];
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BYTE BlockBuffer[16384];
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UINT32 SignatureIndex;
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UINT32 SignatureCount;
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XCRUSH_SIGNATURE* Signatures;
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};
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typedef struct _XCRUSH_CONTEXT XCRUSH_CONTEXT;
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#ifdef __cplusplus
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extern "C" {
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#endif
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FREERDP_API int xcrush_compress(XCRUSH_CONTEXT* xcrush, BYTE* pSrcData, UINT32 SrcSize, BYTE** ppDstData, UINT32* pDstSize, UINT32* pFlags);
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FREERDP_API int xcrush_decompress(XCRUSH_CONTEXT* xcrush, BYTE* pSrcData, UINT32 SrcSize, BYTE** ppDstData, UINT32* pDstSize, UINT32 flags);
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FREERDP_API void xcrush_context_reset(XCRUSH_CONTEXT* xcrush);
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FREERDP_API XCRUSH_CONTEXT* xcrush_context_new(BOOL Compressor);
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FREERDP_API void xcrush_context_free(XCRUSH_CONTEXT* xcrush);
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#ifdef __cplusplus
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}
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#endif
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#endif /* FREERDP_CODEC_XCRUSH_H */
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