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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	gx_utility_4444argb_pixelmap_resize.c	Lines:	68	68	100.0 %
Date:	2026-03-06 19:21:09	Branches:	18	18	100.0 %


/***************************************************************************
 * Copyright (c) 2024 Microsoft Corporation
 * Copyright (c) 2026-present Eclipse ThreadX contributors
 *
 * This program and the accompanying materials are made available under the
 * terms of the MIT License which is available at
 * https://opensource.org/licenses/MIT.
 *
 * SPDX-License-Identifier: MIT
 **************************************************************************/


/**************************************************************************/
/**************************************************************************/
/**                                                                       */
/** GUIX Component                                                        */
/**                                                                       */
/**   Utility (Utility)                                                   */
/**                                                                       */
/**************************************************************************/

#define ALPHAVAL(_c)   (GX_UBYTE)(((_c) >> 12) & 0xf)
#define REDVAL(_c)     (GX_UBYTE)(((_c) >> 8) & 0xf)
#define GREENVAL(_c)   (GX_UBYTE)(((_c) >> 4) & 0xf)
#define BLUEVAL(_c)    (GX_UBYTE)(((_c)) & 0xf)

#define ASSEMBLECOLOR(_a, _r, _g, _b)              \
      (USHORT)((((_a) & 0xf) << 12)              | \
               (((_r) & 0xf) << 8)               | \
               (((_g) & 0xf) << 4)               | \
               ((_b) & 0xf))

#define BYTE_RANGE(_c) _c > 15 ? 15 : _c

#define GX_SOURCE_CODE


/* Include necessary system files.  */

#include "gx_api.h"
#include "gx_utility.h"
#include "gx_system.h"

/**************************************************************************/
/*                                                                        */
/*  FUNCTION                                               RELEASE        */
/*                                                                        */
/*    _gx_utility_4444argb_pixelmap_resize                PORTABLE C      */
/*                                                           6.1.7        */
/*  AUTHOR                                                                */
/*                                                                        */
/*    Kenneth Maxwell, Microsoft Corporation                              */
/*                                                                        */
/*  DESCRIPTION                                                           */
/*                                                                        */
/*    4444argb pixelmap resize function that handles uncompress,          */
/*    with alpha channel.                                                 */
/*                                                                        */
/*  INPUT                                                                 */
/*                                                                        */
/*    src                                   The source pixelmap           */
/*    destination                           The resized pixelmap to be    */
/*                                            returned                    */
/*    width                                 New width                     */
/*    height                                New height                    */
/*                                                                        */
/*  OUTPUT                                                                */
/*                                                                        */
/*    status                                Completion status             */
/*                                                                        */
/*  CALLS                                                                 */
/*                                                                        */
/*                                                                        */
/*  CALLED BY                                                             */
/*                                                                        */
/*    GUIX Internal Code                                                  */
/*                                                                        */
/**************************************************************************/
UINT _gx_utility_4444argb_pixelmap_resize(GX_PIXELMAP *src, GX_PIXELMAP *destination, INT width, INT height)
{
USHORT  *get;
USHORT  *put;
INT      xdiff;
INT      ydiff;
INT      xradio;
INT      yradio;
INT      x;
INT      y;
INT      xx;
INT      yy;
USHORT   neighbor_pixels[2][2];
GX_COLOR alpha[4];
GX_COLOR red;
GX_COLOR green;
GX_COLOR blue;

    /* Calculate scale ratio and enlarge it by 256 times to keep precision.  */
    xradio = ((src -> gx_pixelmap_width) << 8) / width;
    yradio = ((src -> gx_pixelmap_height) << 8) / height;

    /* Fill property values into destination pixelmap structure. */
    destination -> gx_pixelmap_flags = src -> gx_pixelmap_flags;
    destination -> gx_pixelmap_format = src -> gx_pixelmap_format;

    destination -> gx_pixelmap_height = (GX_VALUE)height;
    destination -> gx_pixelmap_width = (GX_VALUE)width;

    /* Safe int math is not required here, calling function limits max width, height to 14 bits so
       overflow cannot occur. */
    destination -> gx_pixelmap_data_size = (UINT)(height * width) * sizeof(USHORT);

    /* Allocate memory to load pixelmap data. */
    destination -> gx_pixelmap_data = (GX_UBYTE *)_gx_system_memory_allocator(destination -> gx_pixelmap_data_size);

    if (destination -> gx_pixelmap_data == GX_NULL)
    {
        return GX_SYSTEM_MEMORY_ERROR;
    }

    put = (USHORT *)destination -> gx_pixelmap_data;

    for (y = 0; y < height; y++)
    {
        for (x = 0; x < width; x++)
        {
            xx = (xradio * x) >> 8;
            yy = (yradio * y) >> 8;

            /* The coordinates of the original source pixel are truncate value,
               calucate their distance between the mathematical coordinates. */
            xdiff = (xradio * x) & 0xff;
            ydiff = (yradio * y) & 0xff;

            get = (USHORT *)src -> gx_pixelmap_data;
            get += yy * src -> gx_pixelmap_width;
            get += xx;

            neighbor_pixels[0][0] = *get;

            if ((xx < src -> gx_pixelmap_width - 1) && (yy < src -> gx_pixelmap_height - 1))
            {
                neighbor_pixels[0][1] = *(get + 1);
                neighbor_pixels[1][0] = *(get + src -> gx_pixelmap_width);
                neighbor_pixels[1][1] = *(get + src -> gx_pixelmap_width + 1);
            }
            else
            {
                if ((xx == src -> gx_pixelmap_width - 1) &&
                    (yy == src -> gx_pixelmap_height - 1))
                {
                    /* Handle right bottom corder pixel.  */
                    neighbor_pixels[0][1] = neighbor_pixels[0][0];
                    neighbor_pixels[1][0] = neighbor_pixels[0][0];
                    neighbor_pixels[1][1] = neighbor_pixels[0][0];
                }
                else if (xx == src -> gx_pixelmap_width - 1)
                {
                    /* Handle pixels in right edge.  */
                    neighbor_pixels[0][1] = neighbor_pixels[0][0];
                    neighbor_pixels[1][0] = *(get + src -> gx_pixelmap_width);
                    neighbor_pixels[1][1] = neighbor_pixels[1][0];
                }
                else
                {
                    /* Handle pixels in bottom edge.  */
                    neighbor_pixels[0][1] = *(get + 1);
                    neighbor_pixels[1][0] = neighbor_pixels[0][0];
                    neighbor_pixels[1][1] = neighbor_pixels[0][1];
                }
            }
            alpha[0] = ALPHAVAL(neighbor_pixels[0][0]);
            alpha[1] = ALPHAVAL(neighbor_pixels[0][1]);
            alpha[2] = ALPHAVAL(neighbor_pixels[1][0]);
            alpha[3] = ALPHAVAL(neighbor_pixels[1][1]);

            /* Calulate pixel values by interpolating 4 neighboring pixels. */
            red = (REDVAL(neighbor_pixels[0][0]) * (alpha[0]) * (256 - (GX_COLOR)xdiff) * (256 - (GX_COLOR)ydiff) + \
                   REDVAL(neighbor_pixels[0][1]) * (alpha[1]) * (GX_COLOR)xdiff * (256 - (GX_COLOR)ydiff) +         \
                   REDVAL(neighbor_pixels[1][0]) * (alpha[2]) * (GX_COLOR)ydiff * (256 - (GX_COLOR)xdiff) +         \
                   REDVAL(neighbor_pixels[1][1]) * (alpha[3]) * (GX_COLOR)xdiff * (GX_COLOR)ydiff) >> 16;

            green = (GREENVAL(neighbor_pixels[0][0]) * (alpha[0]) * (256 - (GX_COLOR)xdiff) * (256 - (GX_COLOR)ydiff) + \
                     GREENVAL(neighbor_pixels[0][1]) * (alpha[1]) * (GX_COLOR)xdiff * (256 - (GX_COLOR)ydiff) +         \
                     GREENVAL(neighbor_pixels[1][0]) * (alpha[2]) * (GX_COLOR)ydiff * (256 - (GX_COLOR)xdiff) +         \
                     GREENVAL(neighbor_pixels[1][1]) * (alpha[3]) * (GX_COLOR)xdiff * (GX_COLOR)ydiff) >> 16;

            blue = (BLUEVAL(neighbor_pixels[0][0]) * (alpha[0]) * (256 - (GX_COLOR)xdiff) * (256 - (GX_COLOR)ydiff) + \
                    BLUEVAL(neighbor_pixels[0][1]) * (alpha[1]) * (GX_COLOR)xdiff * (256 - (GX_COLOR)ydiff) +         \
                    BLUEVAL(neighbor_pixels[1][0]) * (alpha[2]) * (GX_COLOR)ydiff * (256 - (GX_COLOR)xdiff) +         \
                    BLUEVAL(neighbor_pixels[1][1]) * (alpha[3]) * (GX_COLOR)xdiff * (GX_COLOR)ydiff) >> 16;

            alpha[0] = ((alpha[0]) * (256 - (GX_COLOR)xdiff) * (256 - (GX_COLOR)ydiff) + \
                        (alpha[1]) * (GX_COLOR)xdiff * (256 - (GX_COLOR)ydiff) +         \
                        (alpha[2]) * (GX_COLOR)ydiff * (256 - (GX_COLOR)xdiff) +         \
                        (alpha[3]) * (GX_COLOR)xdiff * (GX_COLOR)ydiff) >> 16;

            if (alpha[0])
            {
                red /= alpha[0];
                green /= alpha[0];
                blue /= alpha[0];
            }

            alpha[0] = BYTE_RANGE(alpha[0]);
            red = BYTE_RANGE(red);
            green = BYTE_RANGE(green);
            blue = BYTE_RANGE(blue);

            *put++ = ASSEMBLECOLOR(alpha[0], red, green, blue);
        }
    }

    return GX_SUCCESS;
}



Generated by: GCOVR (Version 4.1)

Line	Branch	Exec	Source
1			/***************************************************************************
2			* Copyright (c) 2024 Microsoft Corporation
3			* Copyright (c) 2026-present Eclipse ThreadX contributors
4			*
5			* This program and the accompanying materials are made available under the
6			* terms of the MIT License which is available at
7			* https://opensource.org/licenses/MIT.
8			*
9			* SPDX-License-Identifier: MIT
10			**************************************************************************/
11
12
13			/**************************************************************************/
14			/**************************************************************************/
15			/** */
16			/** GUIX Component */
17			/** */
18			/** Utility (Utility) */
19			/** */
20			/**************************************************************************/
21
22			#define ALPHAVAL(_c) (GX_UBYTE)(((_c) >> 12) & 0xf)
23			#define REDVAL(_c) (GX_UBYTE)(((_c) >> 8) & 0xf)
24			#define GREENVAL(_c) (GX_UBYTE)(((_c) >> 4) & 0xf)
25			#define BLUEVAL(_c) (GX_UBYTE)(((_c)) & 0xf)
26
27			#define ASSEMBLECOLOR(_a, _r, _g, _b) \
28			(USHORT)((((_a) & 0xf) << 12) \| \
29			(((_r) & 0xf) << 8) \| \
30			(((_g) & 0xf) << 4) \| \
31			((_b) & 0xf))
32
33			#define BYTE_RANGE(_c) _c > 15 ? 15 : _c
34
35			#define GX_SOURCE_CODE
36
37
38			/* Include necessary system files. */
39
40			#include "gx_api.h"
41			#include "gx_utility.h"
42			#include "gx_system.h"
43
44			/**************************************************************************/
45			/* */
46			/* FUNCTION RELEASE */
47			/* */
48			/* _gx_utility_4444argb_pixelmap_resize PORTABLE C */
49			/* 6.1.7 */
50			/* AUTHOR */
51			/* */
52			/* Kenneth Maxwell, Microsoft Corporation */
53			/* */
54			/* DESCRIPTION */
55			/* */
56			/* 4444argb pixelmap resize function that handles uncompress, */
57			/* with alpha channel. */
58			/* */
59			/* INPUT */
60			/* */
61			/* src The source pixelmap */
62			/* destination The resized pixelmap to be */
63			/* returned */
64			/* width New width */
65			/* height New height */
66			/* */
67			/* OUTPUT */
68			/* */
69			/* status Completion status */
70			/* */
71			/* CALLS */
72			/* */
73			/* */
74			/* CALLED BY */
75			/* */
76			/* GUIX Internal Code */
77			/* */
78			/**************************************************************************/
79		204	UINT _gx_utility_4444argb_pixelmap_resize(GX_PIXELMAP src, GX_PIXELMAP destination, INT width, INT height)
80			{
81			USHORT *get;
82			USHORT *put;
83			INT xdiff;
84			INT ydiff;
85			INT xradio;
86			INT yradio;
87			INT x;
88			INT y;
89			INT xx;
90			INT yy;
91			USHORT neighbor_pixels[2][2];
92			GX_COLOR alpha[4];
93			GX_COLOR red;
94			GX_COLOR green;
95			GX_COLOR blue;
96
97			/* Calculate scale ratio and enlarge it by 256 times to keep precision. */
98		204	xradio = ((src -> gx_pixelmap_width) << 8) / width;
99		204	yradio = ((src -> gx_pixelmap_height) << 8) / height;
100
101			/* Fill property values into destination pixelmap structure. */
102		204	destination -> gx_pixelmap_flags = src -> gx_pixelmap_flags;
103		204	destination -> gx_pixelmap_format = src -> gx_pixelmap_format;
104
105		204	destination -> gx_pixelmap_height = (GX_VALUE)height;
106		204	destination -> gx_pixelmap_width = (GX_VALUE)width;
107
108			/* Safe int math is not required here, calling function limits max width, height to 14 bits so
109			overflow cannot occur. */
110		204	destination -> gx_pixelmap_data_size = (UINT)(height * width) * sizeof(USHORT);
111
112			/* Allocate memory to load pixelmap data. */
113		204	destination -> gx_pixelmap_data = (GX_UBYTE *)_gx_system_memory_allocator(destination -> gx_pixelmap_data_size);
114
115	✓✓	204	if (destination -> gx_pixelmap_data == GX_NULL)
116			{
117		2	return GX_SYSTEM_MEMORY_ERROR;
118			}
119
120		202	put = (USHORT *)destination -> gx_pixelmap_data;
121
122	✓✓	26379	for (y = 0; y < height; y++)
123			{
124	✓✓	5173247	for (x = 0; x < width; x++)
125			{
126		5147070	xx = (xradio * x) >> 8;
127		5147070	yy = (yradio * y) >> 8;
128
129			/* The coordinates of the original source pixel are truncate value,
130			calucate their distance between the mathematical coordinates. */
131		5147070	xdiff = (xradio * x) & 0xff;
132		5147070	ydiff = (yradio * y) & 0xff;
133
134		5147070	get = (USHORT *)src -> gx_pixelmap_data;
135		5147070	get += yy * src -> gx_pixelmap_width;
136		5147070	get += xx;
137
138		5147070	neighbor_pixels[0][0] = *get;
139
140	✓✓✓✓	5147070	if ((xx < src -> gx_pixelmap_width - 1) && (yy < src -> gx_pixelmap_height - 1))
141			{
142		5136490	neighbor_pixels[0][1] = *(get + 1);
143		5136490	neighbor_pixels[1][0] = *(get + src -> gx_pixelmap_width);
144		5136490	neighbor_pixels[1][1] = *(get + src -> gx_pixelmap_width + 1);
145			}
146			else
147			{
148	✓✓	10580	if ((xx == src -> gx_pixelmap_width - 1) &&
149	✓✓	2604	(yy == src -> gx_pixelmap_height - 1))
150			{
151			/* Handle right bottom corder pixel. */
152		4	neighbor_pixels[0][1] = neighbor_pixels[0][0];
153		4	neighbor_pixels[1][0] = neighbor_pixels[0][0];
154		4	neighbor_pixels[1][1] = neighbor_pixels[0][0];
155			}
156	✓✓	10576	else if (xx == src -> gx_pixelmap_width - 1)
157			{
158			/* Handle pixels in right edge. */
159		2600	neighbor_pixels[0][1] = neighbor_pixels[0][0];
160		2600	neighbor_pixels[1][0] = *(get + src -> gx_pixelmap_width);
161		2600	neighbor_pixels[1][1] = neighbor_pixels[1][0];
162			}
163			else
164			{
165			/* Handle pixels in bottom edge. */
166		7976	neighbor_pixels[0][1] = *(get + 1);
167		7976	neighbor_pixels[1][0] = neighbor_pixels[0][0];
168		7976	neighbor_pixels[1][1] = neighbor_pixels[0][1];
169			}
170			}
171		5147070	alpha[0] = ALPHAVAL(neighbor_pixels[0][0]);
172		5147070	alpha[1] = ALPHAVAL(neighbor_pixels[0][1]);
173		5147070	alpha[2] = ALPHAVAL(neighbor_pixels[1][0]);
174		5147070	alpha[3] = ALPHAVAL(neighbor_pixels[1][1]);
175
176			/* Calulate pixel values by interpolating 4 neighboring pixels. */
177		5147070	red = (REDVAL(neighbor_pixels[0][0]) * (alpha[0]) * (256 - (GX_COLOR)xdiff) * (256 - (GX_COLOR)ydiff) + \
178		5147070	REDVAL(neighbor_pixels[0][1]) * (alpha[1]) * (GX_COLOR)xdiff * (256 - (GX_COLOR)ydiff) + \
179		5147070	REDVAL(neighbor_pixels[1][0]) * (alpha[2]) * (GX_COLOR)ydiff * (256 - (GX_COLOR)xdiff) + \
180		5147070	REDVAL(neighbor_pixels[1][1]) * (alpha[3]) * (GX_COLOR)xdiff * (GX_COLOR)ydiff) >> 16;
181
182		5147070	green = (GREENVAL(neighbor_pixels[0][0]) * (alpha[0]) * (256 - (GX_COLOR)xdiff) * (256 - (GX_COLOR)ydiff) + \
183		5147070	GREENVAL(neighbor_pixels[0][1]) * (alpha[1]) * (GX_COLOR)xdiff * (256 - (GX_COLOR)ydiff) + \
184		5147070	GREENVAL(neighbor_pixels[1][0]) * (alpha[2]) * (GX_COLOR)ydiff * (256 - (GX_COLOR)xdiff) + \
185		5147070	GREENVAL(neighbor_pixels[1][1]) * (alpha[3]) * (GX_COLOR)xdiff * (GX_COLOR)ydiff) >> 16;
186
187		5147070	blue = (BLUEVAL(neighbor_pixels[0][0]) * (alpha[0]) * (256 - (GX_COLOR)xdiff) * (256 - (GX_COLOR)ydiff) + \
188		5147070	BLUEVAL(neighbor_pixels[0][1]) * (alpha[1]) * (GX_COLOR)xdiff * (256 - (GX_COLOR)ydiff) + \
189		5147070	BLUEVAL(neighbor_pixels[1][0]) * (alpha[2]) * (GX_COLOR)ydiff * (256 - (GX_COLOR)xdiff) + \
190		5147070	BLUEVAL(neighbor_pixels[1][1]) * (alpha[3]) * (GX_COLOR)xdiff * (GX_COLOR)ydiff) >> 16;
191
192		5147070	alpha[0] = ((alpha[0]) * (256 - (GX_COLOR)xdiff) * (256 - (GX_COLOR)ydiff) + \
193		5147070	(alpha[1]) * (GX_COLOR)xdiff * (256 - (GX_COLOR)ydiff) + \
194		5147070	(alpha[2]) * (GX_COLOR)ydiff * (256 - (GX_COLOR)xdiff) + \
195		5147070	(alpha[3]) * (GX_COLOR)xdiff * (GX_COLOR)ydiff) >> 16;
196
197	✓✓	5147070	if (alpha[0])
198			{
199		3731634	red /= alpha[0];
200		3731634	green /= alpha[0];
201		3731634	blue /= alpha[0];
202			}
203
204		5147070	alpha[0] = BYTE_RANGE(alpha[0]);
205		5147070	red = BYTE_RANGE(red);
206		5147070	green = BYTE_RANGE(green);
207		5147070	blue = BYTE_RANGE(blue);
208
209		5147070	*put++ = ASSEMBLECOLOR(alpha[0], red, green, blue);
210			}
211			}
212
213		202	return GX_SUCCESS;
214			}
215