clear.c File Reference

#include <freerdp/config.h>
#include <winpr/crt.h>
#include <winpr/print.h>
#include <winpr/bitstream.h>
#include <freerdp/codec/color.h>
#include <freerdp/codec/clear.h>
#include <freerdp/log.h>

Macros
#define	TAG   FREERDP_TAG("codec.clear")
#define	CLEARCODEC_FLAG_GLYPH_INDEX   0x01
#define	CLEARCODEC_FLAG_GLYPH_HIT   0x02
#define	CLEARCODEC_FLAG_CACHE_RESET   0x04
#define	CLEARCODEC_VBAR_SIZE   32768
#define	CLEARCODEC_VBAR_SHORT_SIZE   16384

Functions
static void	clear_reset_vbar_storage (CLEAR_CONTEXT *clear, BOOL zero)
static void	clear_reset_glyph_cache (CLEAR_CONTEXT *clear)
static BOOL	convert_color (BYTE *dst, UINT32 nDstStep, UINT32 DstFormat, UINT32 nXDst, UINT32 nYDst, UINT32 nWidth, UINT32 nHeight, const BYTE *src, UINT32 nSrcStep, UINT32 SrcFormat, UINT32 nDstWidth, UINT32 nDstHeight, const gdiPalette *palette)
static BOOL	clear_decompress_nscodec (NSC_CONTEXT *nsc, UINT32 width, UINT32 height, wStream *s, UINT32 bitmapDataByteCount, BYTE *pDstData, UINT32 DstFormat, UINT32 nDstStep, UINT32 nXDstRel, UINT32 nYDstRel)
static BOOL	clear_decompress_subcode_rlex (wStream *s, UINT32 bitmapDataByteCount, UINT32 width, UINT32 height, BYTE *pDstData, UINT32 DstFormat, UINT32 nDstStep, UINT32 nXDstRel, UINT32 nYDstRel, UINT32 nDstWidth, UINT32 nDstHeight)
static BOOL	clear_resize_buffer (CLEAR_CONTEXT *clear, UINT32 width, UINT32 height)
static BOOL	clear_decompress_residual_data (CLEAR_CONTEXT *clear, wStream *s, UINT32 residualByteCount, UINT32 nWidth, UINT32 nHeight, BYTE *pDstData, UINT32 DstFormat, UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst, UINT32 nDstWidth, UINT32 nDstHeight, const gdiPalette *palette)
static BOOL	clear_decompress_subcodecs_data (CLEAR_CONTEXT *clear, wStream *s, UINT32 subcodecByteCount, UINT32 nWidth, UINT32 nHeight, BYTE *pDstData, UINT32 DstFormat, UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst, UINT32 nDstWidth, UINT32 nDstHeight, const gdiPalette *palette)
static BOOL	resize_vbar_entry (CLEAR_CONTEXT *clear, CLEAR_VBAR_ENTRY *vBarEntry)
static BOOL	clear_decompress_bands_data (CLEAR_CONTEXT *clear, wStream *s, UINT32 bandsByteCount, UINT32 nWidth, UINT32 nHeight, BYTE *pDstData, UINT32 DstFormat, UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst)
static BOOL	clear_decompress_glyph_data (CLEAR_CONTEXT *clear, wStream *s, UINT32 glyphFlags, UINT32 nWidth, UINT32 nHeight, BYTE *pDstData, UINT32 DstFormat, UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst, UINT32 nDstWidth, UINT32 nDstHeight, const gdiPalette *palette, BYTE **ppGlyphData)
static INLINE BOOL	updateContextFormat (CLEAR_CONTEXT *clear, UINT32 DstFormat)
INT32	clear_decompress (CLEAR_CONTEXT *clear, const BYTE *pSrcData, UINT32 SrcSize, UINT32 nWidth, UINT32 nHeight, BYTE *pDstData, UINT32 DstFormat, UINT32 nDstStep, UINT32 nXDst, UINT32 nYDst, UINT32 nDstWidth, UINT32 nDstHeight, const gdiPalette *palette)
int	clear_compress (CLEAR_CONTEXT *clear, const BYTE *pSrcData, UINT32 SrcSize, BYTE **ppDstData, UINT32 *pDstSize)
BOOL	clear_context_reset (CLEAR_CONTEXT *clear)
CLEAR_CONTEXT *	clear_context_new (BOOL Compressor)
void	clear_context_free (CLEAR_CONTEXT *clear)

Variables
static const UINT32	CLEAR_LOG2_FLOOR [256]
static const BYTE	CLEAR_8BIT_MASKS [9] = { 0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F, 0xFF }

Macro Definition Documentation

CLEARCODEC_FLAG_CACHE_RESET

#define CLEARCODEC_FLAG_CACHE_RESET   0x04

CLEARCODEC_FLAG_GLYPH_HIT

#define CLEARCODEC_FLAG_GLYPH_HIT   0x02

CLEARCODEC_FLAG_GLYPH_INDEX

#define CLEARCODEC_FLAG_GLYPH_INDEX   0x01

CLEARCODEC_VBAR_SHORT_SIZE

#define CLEARCODEC_VBAR_SHORT_SIZE   16384

CLEARCODEC_VBAR_SIZE

#define CLEARCODEC_VBAR_SIZE   32768

TAG

#define TAG   FREERDP_TAG("codec.clear")

FreeRDP: A Remote Desktop Protocol Implementation ClearCodec Bitmap Compression

Copyright 2014 Marc-Andre Moreau marca.nosp@m.ndre.nosp@m..more.nosp@m.au@g.nosp@m.mail..nosp@m.com Copyright 2016 Armin Novak armin.nosp@m..nov.nosp@m.ak@th.nosp@m.inca.nosp@m.st.co.nosp@m.m Copyright 2016 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

clear_compress()

int clear_compress	(	CLEAR_CONTEXT *	clear,
		const BYTE *	pSrcData,
		UINT32	SrcSize,
		BYTE **	ppDstData,
		UINT32 *	pDstSize
	)

clear_context_free()

void clear_context_free

(

CLEAR_CONTEXT *

clear

)

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clear_context_new()

CLEAR_CONTEXT* clear_context_new

(

BOOL

Compressor

)

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clear_context_reset()

BOOL clear_context_reset

(

CLEAR_CONTEXT *

clear

)

The ClearCodec context is not bound to a particular surface, and its internal caches must NOT be reset on the ResetGraphics PDU.

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clear_decompress()

INT32 clear_decompress	(	CLEAR_CONTEXT *	clear,
		const BYTE *	pSrcData,
		UINT32	SrcSize,
		UINT32	nWidth,
		UINT32	nHeight,
		BYTE *	pDstData,
		UINT32	DstFormat,
		UINT32	nDstStep,
		UINT32	nXDst,
		UINT32	nYDst,
		UINT32	nDstWidth,
		UINT32	nDstHeight,
		const gdiPalette *	palette
	)

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clear_decompress_bands_data()

static BOOL clear_decompress_bands_data ( CLEAR_CONTEXT *  clear, wStream *  s, UINT32  bandsByteCount, UINT32  nWidth, UINT32  nHeight, BYTE *  pDstData, UINT32  DstFormat, UINT32  nDstStep, UINT32  nXDst, UINT32  nYDst  )

static

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clear_decompress_glyph_data()

static BOOL clear_decompress_glyph_data ( CLEAR_CONTEXT *  clear, wStream *  s, UINT32  glyphFlags, UINT32  nWidth, UINT32  nHeight, BYTE *  pDstData, UINT32  DstFormat, UINT32  nDstStep, UINT32  nXDst, UINT32  nYDst, UINT32  nDstWidth, UINT32  nDstHeight, const gdiPalette *  palette, BYTE **  ppGlyphData  )

static

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clear_decompress_nscodec()

static BOOL clear_decompress_nscodec ( NSC_CONTEXT *  nsc, UINT32  width, UINT32  height, wStream *  s, UINT32  bitmapDataByteCount, BYTE *  pDstData, UINT32  DstFormat, UINT32  nDstStep, UINT32  nXDstRel, UINT32  nYDstRel  )

static

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clear_decompress_residual_data()

static BOOL clear_decompress_residual_data ( CLEAR_CONTEXT *  clear, wStream *  s, UINT32  residualByteCount, UINT32  nWidth, UINT32  nHeight, BYTE *  pDstData, UINT32  DstFormat, UINT32  nDstStep, UINT32  nXDst, UINT32  nYDst, UINT32  nDstWidth, UINT32  nDstHeight, const gdiPalette *  palette  )

static

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clear_decompress_subcode_rlex()

static BOOL clear_decompress_subcode_rlex ( wStream *  s, UINT32  bitmapDataByteCount, UINT32  width, UINT32  height, BYTE *  pDstData, UINT32  DstFormat, UINT32  nDstStep, UINT32  nXDstRel, UINT32  nYDstRel, UINT32  nDstWidth, UINT32  nDstHeight  )

static

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clear_decompress_subcodecs_data()

static BOOL clear_decompress_subcodecs_data ( CLEAR_CONTEXT *  clear, wStream *  s, UINT32  subcodecByteCount, UINT32  nWidth, UINT32  nHeight, BYTE *  pDstData, UINT32  DstFormat, UINT32  nDstStep, UINT32  nXDst, UINT32  nYDst, UINT32  nDstWidth, UINT32  nDstHeight, const gdiPalette *  palette  )

static

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clear_reset_glyph_cache()

static void clear_reset_glyph_cache ( CLEAR_CONTEXT *  clear )

static

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clear_reset_vbar_storage()

static void clear_reset_vbar_storage ( CLEAR_CONTEXT *  clear, BOOL  zero  )

static

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clear_resize_buffer()

static BOOL clear_resize_buffer ( CLEAR_CONTEXT *  clear, UINT32  width, UINT32  height  )

static

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convert_color()

static BOOL convert_color ( BYTE *  dst, UINT32  nDstStep, UINT32  DstFormat, UINT32  nXDst, UINT32  nYDst, UINT32  nWidth, UINT32  nHeight, const BYTE *  src, UINT32  nSrcStep, UINT32  SrcFormat, UINT32  nDstWidth, UINT32  nDstHeight, const gdiPalette *  palette  )

static

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resize_vbar_entry()

static BOOL resize_vbar_entry ( CLEAR_CONTEXT *  clear, CLEAR_VBAR_ENTRY *  vBarEntry  )

static

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updateContextFormat()

static INLINE BOOL updateContextFormat ( CLEAR_CONTEXT *  clear, UINT32  DstFormat  )

static

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Variable Documentation

CLEAR_8BIT_MASKS

const BYTE CLEAR_8BIT_MASKS[9] = { 0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F, 0xFF }

static

CLEAR_LOG2_FLOOR

const UINT32 CLEAR_LOG2_FLOOR[256]

static

Initial value:

= {
        0, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
        5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
        6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
        6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6,
        7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
        7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
        7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7,
        7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7
}