#include <winpr/assert.h>
#include <winpr/memory.h>
#include <freerdp/log.h>
#include <freerdp/codec/region.h>

Macros
#define	TAG FREERDP_TAG("codec")

Functions
void	region16_init (REGION16 *region)

int	region16_n_rects (const REGION16 *region)

const RECTANGLE_16 *	region16_rects (const REGION16 region, UINT32 nbRects)

static INLINE RECTANGLE_16 *	region16_rects_noconst (REGION16 *region)

const RECTANGLE_16 *	region16_extents (const REGION16 *region)

static RECTANGLE_16 *	region16_extents_noconst (REGION16 *region)

BOOL	rectangle_is_empty (const RECTANGLE_16 *rect)

BOOL	region16_is_empty (const REGION16 *region)

BOOL	rectangles_equal (const RECTANGLE_16 r1, const RECTANGLE_16 r2)

BOOL	rectangles_intersects (const RECTANGLE_16 r1, const RECTANGLE_16 r2)

BOOL	rectangles_intersection (const RECTANGLE_16 r1, const RECTANGLE_16 r2, RECTANGLE_16 *dst)

void	region16_clear (REGION16 *region)

static INLINE REGION16_DATA *	allocateRegion (long nbItems)

BOOL	region16_copy (REGION16 dst, const REGION16 src)

void	region16_print (const REGION16 *region)

static void	region16_copy_band_with_union (RECTANGLE_16 dst, const RECTANGLE_16 src, const RECTANGLE_16 end, UINT16 newTop, UINT16 newBottom, const RECTANGLE_16 unionRect, UINT32 dstCounter, const RECTANGLE_16 srcPtr, RECTANGLE_16 *dstPtr)

static RECTANGLE_16 *	next_band (RECTANGLE_16 band1, RECTANGLE_16 endPtr, int *nbItems)

static BOOL	band_match (const RECTANGLE_16 band1, const RECTANGLE_16 band2, const RECTANGLE_16 *endPtr)

static BOOL	rectangle_contained_in_band (const RECTANGLE_16 band, const RECTANGLE_16 endPtr, const RECTANGLE_16 *rect)

static BOOL	region16_simplify_bands (REGION16 *region)

BOOL	region16_union_rect (REGION16 dst, const REGION16 src, const RECTANGLE_16 *rect)

BOOL	region16_intersects_rect (const REGION16 src, const RECTANGLE_16 arg2)

BOOL	region16_intersect_rect (REGION16 dst, const REGION16 src, const RECTANGLE_16 *rect)

void	region16_uninit (REGION16 *region)

Variables
static REGION16_DATA	empty_region = { 0, 0 }

Macro Definition Documentation

◆ TAG

#define TAG FREERDP_TAG("codec")

FreeRDP: A Remote Desktop Protocol Implementation

Copyright 2014 Thincast Technologies GmbH Copyright 2014 Hardening conta.nosp@m.ct@h.nosp@m.arden.nosp@m.ing-.nosp@m.consu.nosp@m.ltin.nosp@m.g.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

◆ allocateRegion()

static INLINE REGION16_DATA* allocateRegion ( long nbItems )

static

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◆ band_match()

static BOOL band_match	(	const RECTANGLE_16 *	band1,
		const RECTANGLE_16 *	band2,
		const RECTANGLE_16 *	endPtr
	)

static

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◆ next_band()

static RECTANGLE_16* next_band	(	RECTANGLE_16 *	band1,
		RECTANGLE_16 *	endPtr,
		int *	nbItems
	)

static

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◆ rectangle_contained_in_band()

static BOOL rectangle_contained_in_band	(	const RECTANGLE_16 *	band,
		const RECTANGLE_16 *	endPtr,
		const RECTANGLE_16 *	rect
	)

static

compute if the rectangle is fully included in the band

Parameters

band	a pointer on the beginning of the band
endPtr	end of the region
rect	the rectangle to test

Returns: if rect is fully included in an item of the band

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◆ rectangle_is_empty()

BOOL rectangle_is_empty ( const RECTANGLE_16 * rect )

returns if the rectangle is empty

Parameters

rect	the rectangle to check

Returns: if the rectangle is empty

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◆ rectangles_equal()

BOOL rectangles_equal	(	const RECTANGLE_16 *	r1,
		const RECTANGLE_16 *	r2
	)

computes if two rectangles are equal

Parameters

r1	first rectangle
r2	second rectangle

Returns: if the two rectangles are equal

◆ rectangles_intersection()

BOOL rectangles_intersection	(	const RECTANGLE_16 *	r1,
		const RECTANGLE_16 *	r2,
		RECTANGLE_16 *	dst
	)

computes the intersection of two rectangles

Parameters

r1	first rectangle
r2	second rectangle
dst	resulting intersection

Returns: if the two rectangles intersect

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◆ rectangles_intersects()

BOOL rectangles_intersects	(	const RECTANGLE_16 *	r1,
		const RECTANGLE_16 *	r2
	)

computes if two rectangles intersect

Parameters

r1	first rectangle
r2	second rectangle

Returns: if the two rectangles intersect

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◆ region16_clear()

void region16_clear ( REGION16 * region )

clears the region, the region is reset to a (0,0,0,0) region

Parameters

region the region to clear

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◆ region16_copy()

BOOL region16_copy	(	REGION16 *	dst,
		const REGION16 *	src
	)

copies the region to another region

Parameters

dst	destination region
src	source region

Returns: if the operation was successful (false meaning out-of-memory)

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◆ region16_copy_band_with_union()

static void region16_copy_band_with_union	(	RECTANGLE_16 *	dst,
		const RECTANGLE_16 *	src,
		const RECTANGLE_16 *	end,
		UINT16	newTop,
		UINT16	newBottom,
		const RECTANGLE_16 *	unionRect,
		UINT32 *	dstCounter,
		const RECTANGLE_16 **	srcPtr,
		RECTANGLE_16 **	dstPtr
	)

static

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◆ region16_extents()

const RECTANGLE_16* region16_extents ( const REGION16 * region )

Returns: the extents rectangle of this region

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◆ region16_extents_noconst()

static RECTANGLE_16* region16_extents_noconst ( REGION16 * region )

static

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◆ region16_init()

void region16_init ( REGION16 * region )

initialize a region16

Parameters

region the region to initialise

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◆ region16_intersect_rect()

BOOL region16_intersect_rect	(	REGION16 *	dst,
		const REGION16 *	src,
		const RECTANGLE_16 *	arg2
	)

computes the intersection between a region and a rectangle

Parameters

dst	destination region
src	the source region
arg2	the rectangle that intersects

Returns: if the operation was successful (false meaning out-of-memory)

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◆ region16_intersects_rect()

BOOL region16_intersects_rect	(	const REGION16 *	src,
		const RECTANGLE_16 *	arg2
	)

returns if a rectangle intersects the region

Parameters

src	the region
arg2	the rectangle

Returns: if region and rectangle intersect

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◆ region16_is_empty()

BOOL region16_is_empty ( const REGION16 * region )

returns if the region is empty

Parameters

region the region to check

Returns: if the region is empty

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◆ region16_n_rects()

int region16_n_rects ( const REGION16 * region )

Returns: the number of rectangles of this region16

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◆ region16_print()

void region16_print ( const REGION16 * region )

dumps the region on stderr

Parameters

region the region to dump

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◆ region16_rects()

const RECTANGLE_16* region16_rects	(	const REGION16 *	region,
		UINT32 *	nbRects
	)

returns a pointer to rectangles and the number of rectangles in this region. nbRects can be set to NULL if not interested in the number of rectangles.

Parameters

region	the input region
nbRects	if non-NULL returns the number of rectangles

Returns: a pointer on the rectangles

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◆ region16_rects_noconst()

static INLINE RECTANGLE_16* region16_rects_noconst ( REGION16 * region )

static

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◆ region16_simplify_bands()

static BOOL region16_simplify_bands ( REGION16 * region )

static

Simplify consecutive bands that touch and have the same items

==================== ==================== | 1 | | 2 | | | | | ==================== | | | | | 1 | | 2 | ====> | 1 | | 2 | ==================== | | | | | 1 | | 2 | | | | | ==================== ====================

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◆ region16_uninit()

void region16_uninit ( REGION16 * region )

release internal data associated with this region

Parameters

region the region to release

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◆ region16_union_rect()

BOOL region16_union_rect	(	REGION16 *	dst,
		const REGION16 *	src,
		const RECTANGLE_16 *	rect
	)

adds a rectangle in src and stores the resulting region in dst

Parameters

dst	destination region
src	source region
rect	the rectangle to add

Returns: if the operation was successful (false meaning out-of-memory)

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Variable Documentation

◆ empty_region

REGION16_DATA empty_region = { 0, 0 }

static

Macros

Functions

Variables

Macro Definition Documentation

◆ TAG

Function Documentation

◆ allocateRegion()

◆ band_match()

◆ next_band()

◆ rectangle_contained_in_band()

◆ rectangle_is_empty()

◆ rectangles_equal()

◆ rectangles_intersection()

◆ rectangles_intersects()

◆ region16_clear()

◆ region16_copy()

◆ region16_copy_band_with_union()

◆ region16_extents()

◆ region16_extents_noconst()

◆ region16_init()

◆ region16_intersect_rect()

◆ region16_intersects_rect()

◆ region16_is_empty()

◆ region16_n_rects()

◆ region16_print()

◆ region16_rects()

◆ region16_rects_noconst()

◆ region16_simplify_bands()

◆ region16_uninit()

◆ region16_union_rect()

Variable Documentation

◆ empty_region