#include <winpr/assert.h>
#include <freerdp/config.h>
#include <winpr/crt.h>
#include <winpr/print.h>
#include <winpr/bitstream.h>
#include <freerdp/log.h>
#include <freerdp/types.h>
#include "ncrush.h"

Macros
#define	TAG FREERDP_TAG("codec")

Functions
static INLINE UINT16	get_word (const BYTE *data)

static INLINE UINT32	get_dword (const BYTE *data)

static INLINE BOOL	NCrushFetchBits (const BYTE SrcPtr, const BYTE SrcEnd, INT32 nbits, UINT32 bits)

static INLINE void	NCrushWriteStart (UINT32 bits, UINT32 offset, UINT32 *accumulator)

static INLINE void	NCrushWriteBits (BYTE *DstPtr, UINT32 accumulator, UINT32 *offset, UINT32 _bits, UINT32 _nbits)

static INLINE void	NCrushWriteFinish (BYTE **DstPtr, UINT32 accumulator)

int	ncrush_decompress (NCRUSH_CONTEXT ncrush, const BYTE pSrcData, UINT32 SrcSize, const BYTE *ppDstData, UINT32 pDstSize, UINT32 flags)

static int	ncrush_hash_table_add (NCRUSH_CONTEXT ncrush, const BYTE pSrcData, UINT32 SrcSize, UINT32 HistoryOffset)

static int	ncrush_find_match_length (const BYTE Ptr1, const BYTE Ptr2, BYTE *HistoryPtr)

static int	ncrush_find_best_match (NCRUSH_CONTEXT ncrush, UINT16 HistoryOffset, UINT32 pMatchOffset)

static int	ncrush_move_encoder_windows (NCRUSH_CONTEXT ncrush, BYTE HistoryPtr)

int	ncrush_compress (NCRUSH_CONTEXT ncrush, const BYTE pSrcData, UINT32 SrcSize, BYTE pDstBuffer, const BYTE ppDstData, UINT32 pDstSize, UINT32 *pFlags)

static int	ncrush_generate_tables (NCRUSH_CONTEXT *context)

void	ncrush_context_reset (NCRUSH_CONTEXT *ncrush, BOOL flush)

NCRUSH_CONTEXT *	ncrush_context_new (BOOL Compressor)

void	ncrush_context_free (NCRUSH_CONTEXT *ncrush)

Variables
static const UINT16	HuffTableLEC [8192]

static const UINT16	HuffTableLOM [512]

static const BYTE	HuffTableMask [39]

static const BYTE	HuffLengthLEC [294]

static const BYTE	HuffCodeLEC [588]

static const BYTE	HuffLengthLOM [32]

static const UINT16	HuffCodeLOM [32]

static const UINT32	CopyOffsetBitsLUT [32]

static const UINT32	CopyOffsetBaseLUT [32]

static const UINT32	LOMBitsLUT [30]

static const UINT32	LOMBaseLUT [30]

Macro Definition Documentation

◆ TAG

#define TAG FREERDP_TAG("codec")

FreeRDP: A Remote Desktop Protocol Implementation NCrush (RDP6) Bulk Data Compression

Copyright 2014 Marc-Andre Moreau marca.nosp@m.ndre.nosp@m..more.nosp@m.au@g.nosp@m.mail..nosp@m.com Copyright 2017 Armin Novak armin.nosp@m..nov.nosp@m.ak@th.nosp@m.inca.nosp@m.st.co.nosp@m.m Copyright 2017 Thincast Technologies GmbH

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.

Function Documentation

◆ get_dword()

static INLINE UINT32 get_dword ( const BYTE * data )

static

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◆ get_word()

static INLINE UINT16 get_word ( const BYTE * data )

static

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◆ ncrush_compress()

int ncrush_compress	(	NCRUSH_CONTEXT *	ncrush,
		const BYTE *	pSrcData,
		UINT32	SrcSize,
		BYTE *	pDstBuffer,
		const BYTE **	ppDstData,
		UINT32 *	pDstSize,
		UINT32 *	pFlags
	)

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◆ ncrush_context_free()

void ncrush_context_free ( NCRUSH_CONTEXT * ncrush )

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◆ ncrush_context_new()

NCRUSH_CONTEXT* ncrush_context_new ( BOOL Compressor )

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◆ ncrush_context_reset()

void ncrush_context_reset	(	NCRUSH_CONTEXT *	ncrush,
		BOOL	flush
	)

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◆ ncrush_decompress()

int ncrush_decompress	(	NCRUSH_CONTEXT *	ncrush,
		const BYTE *	pSrcData,
		UINT32	SrcSize,
		const BYTE **	ppDstData,
		UINT32 *	pDstSize,
		UINT32	flags
	)

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◆ ncrush_find_best_match()

static int ncrush_find_best_match	(	NCRUSH_CONTEXT *	ncrush,
		UINT16	HistoryOffset,
		UINT32 *	pMatchOffset
	)

static

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◆ ncrush_find_match_length()

static int ncrush_find_match_length	(	const BYTE *	Ptr1,
		const BYTE *	Ptr2,
		BYTE *	HistoryPtr
	)

static

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◆ ncrush_generate_tables()

static int ncrush_generate_tables ( NCRUSH_CONTEXT * context )

static

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◆ ncrush_hash_table_add()

static int ncrush_hash_table_add	(	NCRUSH_CONTEXT *	ncrush,
		const BYTE *	pSrcData,
		UINT32	SrcSize,
		UINT32	HistoryOffset
	)

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◆ ncrush_move_encoder_windows()

static int ncrush_move_encoder_windows	(	NCRUSH_CONTEXT *	ncrush,
		BYTE *	HistoryPtr
	)

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◆ NCrushFetchBits()

static INLINE BOOL NCrushFetchBits	(	const BYTE **	SrcPtr,
		const BYTE **	SrcEnd,
		INT32 *	nbits,
		UINT32 *	bits
	)

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◆ NCrushWriteBits()

static INLINE void NCrushWriteBits	(	BYTE **	DstPtr,
		UINT32 *	accumulator,
		UINT32 *	offset,
		UINT32	_bits,
		UINT32	_nbits
	)

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◆ NCrushWriteFinish()

static INLINE void NCrushWriteFinish	(	BYTE **	DstPtr,
		UINT32	accumulator
	)

static

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◆ NCrushWriteStart()

static INLINE void NCrushWriteStart	(	UINT32 *	bits,
		UINT32 *	offset,
		UINT32 *	accumulator
	)

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Variable Documentation

◆ CopyOffsetBaseLUT

const UINT32 CopyOffsetBaseLUT[32]

static

◆ CopyOffsetBitsLUT

const UINT32 CopyOffsetBitsLUT[32]

static

◆ HuffCodeLEC

const BYTE HuffCodeLEC[588]

static

◆ HuffCodeLOM

const UINT16 HuffCodeLOM[32]

static

◆ HuffLengthLEC

const BYTE HuffLengthLEC[294]

static

◆ HuffLengthLOM

const BYTE HuffLengthLOM[32]

static

◆ HuffTableLEC

const UINT16 HuffTableLEC[8192]

static

◆ HuffTableLOM

const UINT16 HuffTableLOM[512]

static

◆ HuffTableMask

const BYTE HuffTableMask[39]

static

◆ LOMBaseLUT

const UINT32 LOMBaseLUT[30]

static

◆ LOMBitsLUT

const UINT32 LOMBitsLUT[30]

static

Macros

Functions

Variables

Macro Definition Documentation

◆ TAG

Function Documentation

◆ get_dword()

◆ get_word()

◆ ncrush_compress()

◆ ncrush_context_free()

◆ ncrush_context_new()

◆ ncrush_context_reset()

◆ ncrush_decompress()

◆ ncrush_find_best_match()

◆ ncrush_find_match_length()

◆ ncrush_generate_tables()

◆ ncrush_hash_table_add()

◆ ncrush_move_encoder_windows()

◆ NCrushFetchBits()

◆ NCrushWriteBits()

◆ NCrushWriteFinish()

◆ NCrushWriteStart()

Variable Documentation

◆ CopyOffsetBaseLUT

◆ CopyOffsetBitsLUT

◆ HuffCodeLEC

◆ HuffCodeLOM

◆ HuffLengthLEC

◆ HuffLengthLOM

◆ HuffTableLEC

◆ HuffTableLOM

◆ HuffTableMask

◆ LOMBaseLUT

◆ LOMBitsLUT