63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* MPPC 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_MPPC_H
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#define FREERDP_MPPC_H
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#include <freerdp/api.h>
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#include <freerdp/types.h>
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#include <winpr/bitstream.h>
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#define PACKET_COMPRESSED 0x20
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#define PACKET_AT_FRONT 0x40
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#define PACKET_FLUSHED 0x80
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struct _MPPC_CONTEXT
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{
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wBitStream* bs;
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BOOL Compressor;
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BYTE* HistoryPtr;
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UINT32 HistoryOffset;
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UINT32 HistoryBufferSize;
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BYTE HistoryBuffer[65536];
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UINT16 MatchBuffer[32768];
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UINT32 CompressionLevel;
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};
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typedef struct _MPPC_CONTEXT MPPC_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 mppc_compress(MPPC_CONTEXT* mppc, BYTE* pSrcData, UINT32 SrcSize, BYTE* pDstData, UINT32* pDstSize, UINT32* pFlags);
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FREERDP_API int mppc_decompress(MPPC_CONTEXT* mppc, BYTE* pSrcData, UINT32 SrcSize, BYTE** ppDstData, UINT32* pDstSize, UINT32 flags);
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FREERDP_API void mppc_set_compression_level(MPPC_CONTEXT* mppc, DWORD CompressionLevel);
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FREERDP_API void mppc_context_reset(MPPC_CONTEXT* mppc);
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FREERDP_API MPPC_CONTEXT* mppc_context_new(DWORD CompressionLevel, BOOL Compressor);
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FREERDP_API void mppc_context_free(MPPC_CONTEXT* mppc);
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#ifdef __cplusplus
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}
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#endif
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#endif /* FREERDP_MPPC_H */
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