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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:	2024-12-05 08:52:37	Branches:	18	18	100.0 %


/***************************************************************************
 * Copyright (c) 2024 Microsoft Corporation
 *
 * 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                                                  */
/*                                                                        */
/*  RELEASE HISTORY                                                       */
/*                                                                        */
/*    DATE              NAME                      DESCRIPTION             */
/*                                                                        */
/*  05-19-2020     Kenneth Maxwell          Initial Version 6.0           */
/*  09-30-2020     Kenneth Maxwell          Modified comment(s),          */
/*                                            resulting in version 6.1    */
/*  06-02-2021     Kenneth Maxwell          Modified comment(s),          */
/*                                            removed unused variable     */
/*                                            assignment,                 */
/*                                            resulting in version 6.1.7  */
/*                                                                        */
/**************************************************************************/
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			*
4			* This program and the accompanying materials are made available under the
5			* terms of the MIT License which is available at
6			* https://opensource.org/licenses/MIT.
7			*
8			* SPDX-License-Identifier: MIT
9			**************************************************************************/
10
11
12			/**************************************************************************/
13			/**************************************************************************/
14			/** */
15			/** GUIX Component */
16			/** */
17			/** Utility (Utility) */
18			/** */
19			/**************************************************************************/
20
21			#define ALPHAVAL(_c) (GX_UBYTE)(((_c) >> 12) & 0xf)
22			#define REDVAL(_c) (GX_UBYTE)(((_c) >> 8) & 0xf)
23			#define GREENVAL(_c) (GX_UBYTE)(((_c) >> 4) & 0xf)
24			#define BLUEVAL(_c) (GX_UBYTE)(((_c)) & 0xf)
25
26			#define ASSEMBLECOLOR(_a, _r, _g, _b) \
27			(USHORT)((((_a) & 0xf) << 12) \| \
28			(((_r) & 0xf) << 8) \| \
29			(((_g) & 0xf) << 4) \| \
30			((_b) & 0xf))
31
32			#define BYTE_RANGE(_c) _c > 15 ? 15 : _c
33
34			#define GX_SOURCE_CODE
35
36
37			/* Include necessary system files. */
38
39			#include "gx_api.h"
40			#include "gx_utility.h"
41			#include "gx_system.h"
42
43			/**************************************************************************/
44			/* */
45			/* FUNCTION RELEASE */
46			/* */
47			/* _gx_utility_4444argb_pixelmap_resize PORTABLE C */
48			/* 6.1.7 */
49			/* AUTHOR */
50			/* */
51			/* Kenneth Maxwell, Microsoft Corporation */
52			/* */
53			/* DESCRIPTION */
54			/* */
55			/* 4444argb pixelmap resize function that handles uncompress, */
56			/* with alpha channel. */
57			/* */
58			/* INPUT */
59			/* */
60			/* src The source pixelmap */
61			/* destination The resized pixelmap to be */
62			/* returned */
63			/* width New width */
64			/* height New height */
65			/* */
66			/* OUTPUT */
67			/* */
68			/* status Completion status */
69			/* */
70			/* CALLS */
71			/* */
72			/* */
73			/* CALLED BY */
74			/* */
75			/* GUIX Internal Code */
76			/* */
77			/* RELEASE HISTORY */
78			/* */
79			/* DATE NAME DESCRIPTION */
80			/* */
81			/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */
82			/* 09-30-2020 Kenneth Maxwell Modified comment(s), */
83			/* resulting in version 6.1 */
84			/* 06-02-2021 Kenneth Maxwell Modified comment(s), */
85			/* removed unused variable */
86			/* assignment, */
87			/* resulting in version 6.1.7 */
88			/* */
89			/**************************************************************************/
90		204	UINT _gx_utility_4444argb_pixelmap_resize(GX_PIXELMAP src, GX_PIXELMAP destination, INT width, INT height)
91			{
92			USHORT *get;
93			USHORT *put;
94			INT xdiff;
95			INT ydiff;
96			INT xradio;
97			INT yradio;
98			INT x;
99			INT y;
100			INT xx;
101			INT yy;
102			USHORT neighbor_pixels[2][2];
103			GX_COLOR alpha[4];
104			GX_COLOR red;
105			GX_COLOR green;
106			GX_COLOR blue;
107
108			/* Calculate scale ratio and enlarge it by 256 times to keep precision. */
109		204	xradio = ((src -> gx_pixelmap_width) << 8) / width;
110		204	yradio = ((src -> gx_pixelmap_height) << 8) / height;
111
112			/* Fill property values into destination pixelmap structure. */
113		204	destination -> gx_pixelmap_flags = src -> gx_pixelmap_flags;
114		204	destination -> gx_pixelmap_format = src -> gx_pixelmap_format;
115
116		204	destination -> gx_pixelmap_height = (GX_VALUE)height;
117		204	destination -> gx_pixelmap_width = (GX_VALUE)width;
118
119			/* Safe int math is not required here, calling function limits max width, height to 14 bits so
120			overflow cannot occur. */
121		204	destination -> gx_pixelmap_data_size = (UINT)(height * width) * sizeof(USHORT);
122
123			/* Allocate memory to load pixelmap data. */
124		204	destination -> gx_pixelmap_data = (GX_UBYTE *)_gx_system_memory_allocator(destination -> gx_pixelmap_data_size);
125
126	✓✓	204	if (destination -> gx_pixelmap_data == GX_NULL)
127			{
128		2	return GX_SYSTEM_MEMORY_ERROR;
129			}
130
131		202	put = (USHORT *)destination -> gx_pixelmap_data;
132
133	✓✓	26379	for (y = 0; y < height; y++)
134			{
135	✓✓	5173247	for (x = 0; x < width; x++)
136			{
137		5147070	xx = (xradio * x) >> 8;
138		5147070	yy = (yradio * y) >> 8;
139
140			/* The coordinates of the original source pixel are truncate value,
141			calucate their distance between the mathematical coordinates. */
142		5147070	xdiff = (xradio * x) & 0xff;
143		5147070	ydiff = (yradio * y) & 0xff;
144
145		5147070	get = (USHORT *)src -> gx_pixelmap_data;
146		5147070	get += yy * src -> gx_pixelmap_width;
147		5147070	get += xx;
148
149		5147070	neighbor_pixels[0][0] = *get;
150
151	✓✓✓✓	5147070	if ((xx < src -> gx_pixelmap_width - 1) && (yy < src -> gx_pixelmap_height - 1))
152			{
153		5136490	neighbor_pixels[0][1] = *(get + 1);
154		5136490	neighbor_pixels[1][0] = *(get + src -> gx_pixelmap_width);
155		5136490	neighbor_pixels[1][1] = *(get + src -> gx_pixelmap_width + 1);
156			}
157			else
158			{
159	✓✓	10580	if ((xx == src -> gx_pixelmap_width - 1) &&
160	✓✓	2604	(yy == src -> gx_pixelmap_height - 1))
161			{
162			/* Handle right bottom corder pixel. */
163		4	neighbor_pixels[0][1] = neighbor_pixels[0][0];
164		4	neighbor_pixels[1][0] = neighbor_pixels[0][0];
165		4	neighbor_pixels[1][1] = neighbor_pixels[0][0];
166			}
167	✓✓	10576	else if (xx == src -> gx_pixelmap_width - 1)
168			{
169			/* Handle pixels in right edge. */
170		2600	neighbor_pixels[0][1] = neighbor_pixels[0][0];
171		2600	neighbor_pixels[1][0] = *(get + src -> gx_pixelmap_width);
172		2600	neighbor_pixels[1][1] = neighbor_pixels[1][0];
173			}
174			else
175			{
176			/* Handle pixels in bottom edge. */
177		7976	neighbor_pixels[0][1] = *(get + 1);
178		7976	neighbor_pixels[1][0] = neighbor_pixels[0][0];
179		7976	neighbor_pixels[1][1] = neighbor_pixels[0][1];
180			}
181			}
182		5147070	alpha[0] = ALPHAVAL(neighbor_pixels[0][0]);
183		5147070	alpha[1] = ALPHAVAL(neighbor_pixels[0][1]);
184		5147070	alpha[2] = ALPHAVAL(neighbor_pixels[1][0]);
185		5147070	alpha[3] = ALPHAVAL(neighbor_pixels[1][1]);
186
187			/* Calulate pixel values by interpolating 4 neighboring pixels. */
188		5147070	red = (REDVAL(neighbor_pixels[0][0]) * (alpha[0]) * (256 - (GX_COLOR)xdiff) * (256 - (GX_COLOR)ydiff) + \
189		5147070	REDVAL(neighbor_pixels[0][1]) * (alpha[1]) * (GX_COLOR)xdiff * (256 - (GX_COLOR)ydiff) + \
190		5147070	REDVAL(neighbor_pixels[1][0]) * (alpha[2]) * (GX_COLOR)ydiff * (256 - (GX_COLOR)xdiff) + \
191		5147070	REDVAL(neighbor_pixels[1][1]) * (alpha[3]) * (GX_COLOR)xdiff * (GX_COLOR)ydiff) >> 16;
192
193		5147070	green = (GREENVAL(neighbor_pixels[0][0]) * (alpha[0]) * (256 - (GX_COLOR)xdiff) * (256 - (GX_COLOR)ydiff) + \
194		5147070	GREENVAL(neighbor_pixels[0][1]) * (alpha[1]) * (GX_COLOR)xdiff * (256 - (GX_COLOR)ydiff) + \
195		5147070	GREENVAL(neighbor_pixels[1][0]) * (alpha[2]) * (GX_COLOR)ydiff * (256 - (GX_COLOR)xdiff) + \
196		5147070	GREENVAL(neighbor_pixels[1][1]) * (alpha[3]) * (GX_COLOR)xdiff * (GX_COLOR)ydiff) >> 16;
197
198		5147070	blue = (BLUEVAL(neighbor_pixels[0][0]) * (alpha[0]) * (256 - (GX_COLOR)xdiff) * (256 - (GX_COLOR)ydiff) + \
199		5147070	BLUEVAL(neighbor_pixels[0][1]) * (alpha[1]) * (GX_COLOR)xdiff * (256 - (GX_COLOR)ydiff) + \
200		5147070	BLUEVAL(neighbor_pixels[1][0]) * (alpha[2]) * (GX_COLOR)ydiff * (256 - (GX_COLOR)xdiff) + \
201		5147070	BLUEVAL(neighbor_pixels[1][1]) * (alpha[3]) * (GX_COLOR)xdiff * (GX_COLOR)ydiff) >> 16;
202
203		5147070	alpha[0] = ((alpha[0]) * (256 - (GX_COLOR)xdiff) * (256 - (GX_COLOR)ydiff) + \
204		5147070	(alpha[1]) * (GX_COLOR)xdiff * (256 - (GX_COLOR)ydiff) + \
205		5147070	(alpha[2]) * (GX_COLOR)ydiff * (256 - (GX_COLOR)xdiff) + \
206		5147070	(alpha[3]) * (GX_COLOR)xdiff * (GX_COLOR)ydiff) >> 16;
207
208	✓✓	5147070	if (alpha[0])
209			{
210		3731634	red /= alpha[0];
211		3731634	green /= alpha[0];
212		3731634	blue /= alpha[0];
213			}
214
215		5147070	alpha[0] = BYTE_RANGE(alpha[0]);
216		5147070	red = BYTE_RANGE(red);
217		5147070	green = BYTE_RANGE(green);
218		5147070	blue = BYTE_RANGE(blue);
219
220		5147070	*put++ = ASSEMBLECOLOR(alpha[0], red, green, blue);
221			}
222			}
223
224		202	return GX_SUCCESS;
225			}
226